JP2003032884A - Power system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power system which has a self diagnostic multioutput and multifunction for performing the abnormality and fault detection within a power source. SOLUTION: The state of interior and exterior of a power unit including a driven unit 50 or an alarm is converted into each ON/OFF signal by a monitor circuit 41 within a controller 40, and is given to a CPU 42. The CPU 42 monitors the ON/OFF of each input signal of them according to the program written in a storage device 43, and outputs a control signal geared to the situation to each output port. By these control signals, each function of ON/OFF of the drive of converters 31, 36-1, 36-2, and 39, the indication of a state display 38, and others is controlled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-diagnosis type multi-output, multi-function power supply system for detecting abnormality / fault inside a power supply.

[0002]

2. Description of the Related Art FIG. 16 is a minimum basic block diagram showing a conventional power supply system. In a conventional normal power supply system, alternating current (hereinafter referred to as “AC”) power supply power S
i to the power supply unit 1 and input it
AC / DC (hereinafter referred to as “DC”) converter 2
Is converted into DC, and stable DC power supply power So is output and supplied to the driven device 5.

In such a power supply system, an output monitoring circuit 3 is connected to the output side of the AC / DC converter 2 as a protective function for safely stopping the power supply unit 1 when a power supply abnormality occurs in the power supply unit 1. The output on / off circuit 4 is connected to the output side, and the output side of the output on / off circuit 4 is connected to the AC / DC converter 2. For example, when a power supply abnormality occurs, this is detected by the output monitoring circuit 3, and the output on / off circuit 4 turns off the AC / DC converter 2 based on the detection signal so that the power supply unit 1 is stopped safely. It has become.

FIG. 17 is a basic configuration block diagram showing a conventional power supply system having multiple outputs and multiple functions such as used in a financial system device. This power system is
In this system, a plurality (for example, two) of DC power sources So1 and So2 are output from the power supply unit 10 and supplied to the driven device 25. AC power supply S for the power supply unit 10
i is input, this is converted into DC by the AC / DC converter 11 in the power supply unit 10, and further rectified by the rectifying diode 12. Further, as a backup for the input stop of the AC power supply Si, the AC power supply Si is converted into DC by the charger 13 in the power supply unit 10, the DC is charged by this DC, and the DC output of the battery 14 is rectified. It is rectified by the diode 15 for use.

D output from the diode 12 or 15
The C power source power is supplied to the two DC / DC converters 16-1,
In 16-2, it is converted into predetermined DC power source power So1 and So2 and is supplied to the driven device 25. Also, power supply unit 1
A cooling fan (hereinafter referred to as "FAN") is included in 0.
17, a status display unit 18 including a light emitting diode (hereinafter referred to as “LED”), and the like are provided.

These AC / DC converter 11, charger 13, battery 14, DC / DC converter 16
The -1, 16-2, the FAN 17, the status display unit 18, and the like are controlled by the control unit 20 provided in the power supply unit 10, and perform power supply control as in the following (1) to (5). .

(1) Internal / external state of the power source including the driven device 25 (ON / OFF switch (hereinafter referred to as "SW"), device signal S25 from the driven device 25, power supply, battery 14, FAN 17, etc.) Output on / off control for abnormal conditions, input power, ambient temperature, ambient temperature, etc.) (2) Sequence control of DC output on / off according to device specifications (3) Power failure and power recovery AC input / battery input switching and battery charge / discharge control (4) FAN1 according to temperature and DC output ON / OFF
7 ON / OFF control (5) Power status (DC output ON / OFF, battery capacity, etc.) and alarm display

In the control unit 20 which controls these power supplies,
For each output and each function, a monitoring circuit 21 and a function control circuit 22 for each power source information regarding the internal and external states of the power source including the driven device 25 are combined. In the monitoring circuit 21 for each power supply information, each output voltage, each output current, AC input voltage, battery voltage, battery discharge current, device signal S25, power supply status signal, ambient temperature, internal temperature, and FAN drive of a plurality of monitoring points. If the information is a signal, monitor whether it is on or off by inputting the current, etc. at each of these monitoring points, and if the information is analog, whether it exceeds the specified value. To monitor. The function control circuit 22 connected to the output side of the monitoring circuit 21 has a plurality of sequence control circuits 22a-1 to 22a.
a-N, a state display control circuit 22b, a FAN drive control circuit 22c, a battery charge / discharge control circuit 22d, and the like,
Input the signal from the monitoring circuit 21 related to each function,
Control signals (each output ON / OFF signal S22a-1, power state signal S22a-2, corresponding to all possible situations)
Battery drive signal S22a-3, status display signal S22
b, FAN drive signal S22c, etc.) is output. Further, if an output is added or a function is added, a new monitoring circuit or control circuit is added, or a combination of the monitoring circuit and the control circuit is reexamined to realize the specifications.

[0009]

However, the conventional power supply system of FIG. 17 having multiple outputs and multiple functions has the following problems (a) to (e). (A) As the number of outputs and functions increases, the number of circuits and the number of parts increase, and the cost and size of the control unit 20 increase. Also, the failure rate is increased and the reliability is lowered.

(B) Various states inside and outside the power source including the driven device 25 (power failure, ambient temperature, internal temperature, device load,
Power supply operation (partial output operation and stop, FAN rotation speed, redundant operation, etc.) suitable for life, SW ON / OFF, etc. has a limit in realizing functions because the circuit becomes very complicated.

(C) It is necessary to redesign a new circuit for the number of outputs, the addition of a new function, the change of the sequence and the detection point, and the design man-hour increases. (D) When an alarm (abnormality alarm) occurs or when it is desired to display the status of the power supply in operation, it is common to use the LED of the status display unit 18 to display one for each status. is there. However, with this method, if many points are to be displayed, one LED is used for each display content, so it is difficult to grasp the status at a glance, and appropriate processing may be erroneously performed, resulting in safety and reliability. Is reduced.

(E) Since the power supply unit 10 is intended to supply the DC power supplies So1 and So2 for driving the driven device 25, the power supply unit 10 is arranged in a place that is generally hard to see with respect to the entire power supply system. It is often done.
Therefore, the device user or the administrator may not know the state or abnormality of the power supply unit 10, and the handling of the treatment may be delayed to increase the maintenance man-hours. Moreover, since there is no information for specifying the date and time in the power supply system, it is impossible to know when an abnormality or a power failure has occurred. Therefore, the number of man-hours required for analysis of power supply abnormality, power supply environment, etc. increases. The present invention solves the problems of the above-described conventional technology, and a central processing unit (hereinafter referred to as "CPU").
An object of the present invention is to provide a power supply system capable of collectively controlling various functions related to a power supply by program control using the.

[0013]

In order to solve the above-mentioned problems, a first invention of the present invention is a power supply system having multiple outputs and multiple functions, wherein AC power is input to the D power supply system.
A plurality of external DC power supplies, which are converted into C power supply power, DC / DC conversion of the DC power supply power, and stabilized, are output and supplied to an external driven device, and the AC power supply power is converted into AC / AC power.
A power supply unit that outputs a stabilized internal DC power supply by performing DC conversion and a power supply unit that monitors power supply information between the power supply inside and the power supply outside including the driven device and outputs these power supply states and alarms as digital signals. A circuit and the digital signal are input, the digital signal is centrally processed according to a program,
A CPU that outputs a plurality of control signals for collectively turning on / off the plurality of external DC power sources and collectively controlling each function in the power source unit according to each change in the power source state and the alarm.
And are equipped with.

A second aspect of the present invention is a power supply system having multiple outputs and multiple functions, wherein AC power source power is input to the first D power supply system.
At the same time as converting to C power source power, converting the AC power source power to DC and charging a battery to generate a second DC power source power, and DC / DC converting the first or second DC power source power to stabilize it. The plurality of external DC power supplies are output and supplied to an external driven device, and the AC power supplies are supplied to the AC / D converter.
A power source unit that performs C conversion or outputs stabilized internal DC power source power from the second DC power source power source, monitors power source information inside the power source and outside the power source including the driven device, and monitors the power state of these power sources. A monitoring circuit that outputs an alarm as a digital signal, the digital signal is input, the digital signal is centrally processed according to a program, and the plurality of external DC power supplies are turned on / off depending on each change in the power supply state and the alarm. And a CPU that outputs a plurality of control signals for collectively controlling each function in the power supply unit.

By adopting the configuration of the first and second aspects of the invention, when the AC power source power is input to the power source section, the power source section generates a plurality of external DC power source power and internal DC power source power. Then, an external driven device is driven by the plurality of external DC power sources. The power supply information inside the power supply and outside the power supply including the driven device is monitored by the monitoring circuit, and the power status and alarms are displayed in the form of digital signals in the CP.
Given to U. The CPU processes a digital signal given from the monitoring circuit according to a program and outputs a plurality of control signals to collectively control ON / OFF of external DC power source power output from the power supply unit and each function in the power supply unit. .

According to a third aspect of the present invention, in the power supply system according to the first or second aspect, as a monitoring circuit, analog / digital (hereinafter referred to as “A / It has a conversion circuit. This allows output voltage, output current, AC
Analog power information such as input voltage, ambient temperature, and internal temperature is converted into a digital signal by the A / D conversion circuit and given to the CPU. The CPU centrally processes the input digital signal according to a program.

According to a fourth aspect of the present invention, in the power supply system according to the first or second aspect, the CPU displays a plurality of control signals, a display signal of information corresponding to a power supply state and an alarm, and information of a method of responding to the information. A display unit for outputting the display signal is provided on the outer surface of the housing containing the power supply unit, the monitoring circuit, and the CPU so that the display signal can be read at a glance.

As a result, a display signal such as information corresponding to the power supply state or alarm is output from the CPU and given to the display section. The display unit includes, for example, a segment, a liquid crystal display (hereinafter referred to as “LCD”) monitor, and the like, and is provided on the outer surface of the housing. For example, when the display unit is a segment, alphanumeric characters and the like corresponding to each power supply state and alarm are displayed, and when the display unit is an LCD monitor, documents and marks corresponding to each power supply state and alarm are displayed. Therefore,
It is possible to read the information inside and outside the power source and the method of coping with this information at a glance.

A fifth aspect of the invention is the power supply system according to the first or second aspect of the invention, in which the CPU displays a plurality of control signals, a display signal of information corresponding to a power supply state and an alarm, and information of a method of responding to the information. A communication unit having a function of outputting a display signal and transmitting the display signal to the outside is provided on the output side of the CPU, and the display signal transmitted from the communication unit can be displayed at a glance. The display unit is provided on the driven device side.

Thus, when the CPU outputs a display signal such as information corresponding to the power supply state or an alarm, this display signal is transmitted to the outside by the communication means and is transmitted to the display unit on the driven device side. The display unit displays the information inside the power supply and the method of dealing with this information, so that these can be read at a glance from the driven device side.

A sixth aspect of the present invention is the power supply system of the fifth aspect, in which the input unit provided on the side of the driven device is connected to the CP.
When a display command is output to U, a display signal is output from the CPU and displayed on the display unit on the driven device side. As a result, when the device user or the administrator wants to confirm the power supply information on the driven device side, if the power supply information output command is sent from the input unit to the CPU, the information inside and outside the power supply is displayed on the display unit on the driven device side. Is
It becomes possible to read information inside and outside the power supply.

A seventh invention is the power supply system according to the fifth or sixth invention, wherein when the display signal output from the CPU is displayed on the display unit, the clock function of the driven device is used to detect an abnormality or a power failure. The generation time is displayed on the display unit. Thus, when transmitting power supply information such as power supply abnormality or power failure to the driven device, the time of occurrence of the abnormality or power failure is displayed on the display unit by the clock function on the driven device side. Therefore, the device user or the administrator can read the generation time of the information inside and outside the power supply from the display unit.

An eighth invention is the power supply system according to the first or second invention, in which a nonvolatile memory such as a flash memory for storing information on an alarm state is provided, and the previous occurrence occurs even when the CPU is reset. The alarm information is read from the non-volatile memory and the same alarm state as that before the reset of the CPU is held.
As a result, the information on the alarm state generated due to the external or internal power source is saved in the non-volatile memory such as the flash memory, and even when the CPU that controls the power source is reset, the previously generated alarm information is stored in the non-volatile state. The same alarm state as before the CPU was reset is retained.

A ninth invention is the power supply system according to the first or second invention, wherein a nonvolatile memory such as a flash memory for storing information on an alarm state and a CP from the outside of the power supply are used.
A reset switch for accessing the U and releasing the alarm state is provided. And, regarding the alarm state generated due to the external power source or the internal power source,
The CPU identifies whether it is an internal cause or an external cause, stores information about this cause and information about the alarm state in the non-volatile memory, and can be accessed from the outside of the power supply after removing the cause of the alarm outside the power supply. By operating the reset switch, an alarm state other than the cause inside the power supply can be released, and the alarm inside the power supply can be released only by a specific person such as a manufacturer.

[0025]

BEST MODE FOR CARRYING OUT THE INVENTION (First Embodiment) (A) Configuration FIG. 1 shows a first embodiment of the present invention used in a financial system device or the like, showing a multi-output, multi-function power supply system. 2 is a schematic configuration block diagram of FIG.

In this power supply system, a plurality of (for example, two) DC power supplies So1 and So2 are supplied from the power supply unit 30.
Is supplied to the external driven device 50. In the power supply unit 30, an AC / DC converter 31 that receives the AC power supply power Si and converts it into DC is provided, and a rectifying diode 32 that outputs the first DC power supply S32 is connected to the output side thereof. ing. Further, a backup AC / DC conversion charger 33 is provided for disconnection of the AC power supply Si due to a power failure or the like, and a battery 34 is connected to this output side. A rectifying diode 35 that outputs the second DC power supply S35 is connected to the output side of the battery 34. DC / DC converters 36-1 and 36-2 that output a plurality of external DC power supplies (for example, two DC power supplies So1 and So2) are connected to the output sides of the diodes 32 and 35. The DC power supply powers So1 and So2 output from the converters 36-1 and 36-2 are supplied to the driven device 50.

In the power supply unit 30, there is an F for cooling.
An AN 37, a status display section 38 including LEDs, a control converter 39, a control section 40, and the like are provided. The control converter 39 is a circuit that receives the AC power supply power Si or the output of the battery 34, generates a predetermined internal DC power supply power S39, and supplies the predetermined internal DC power supply power S39 to the control unit 40. Control unit 40
Has a function of performing power supply control as in the following (1) to (5), similar to the conventional control unit 20 of FIG.

(1) Internal and external states of the power source including the driven device 50 (on / off SW, device signal S50 from the driven device 50, power source, battery 34, FAN 37, etc. abnormality,
DC output on / off control for input power supply, ambient temperature, ambient temperature, etc.) (2) DC output on / off sequence control according to device specifications (3) AC input during power failure and power recovery And battery input switching and battery charge / discharge control (4) FAN3 according to temperature and DC output ON / OFF
7 ON / OFF control (5) Power status (DC output ON / OFF, battery capacity, etc.) and alarm display

The control unit 40 is realized by combining a CPU 42 and a monitoring circuit 41 for monitoring each power source information regarding the internal and external states of the power source including the driven device 50 for each output and each function. The monitoring circuit 41 includes power source information for each monitoring point (for example, output voltage, output current, AC input voltage, battery voltage, battery charge / discharge current, device signal S50 given from the driven device 50, power supply state signal). ,Ambient temperature,
It has a function as a conversion circuit that inputs the internal temperature, etc.) and outputs the power supply status as a digital signal.
42 input ports are connected.

The CPU 42 is a storage device 43 in which a program for controlling on / off of output and each function is written.
Each control signal (for example, each output ON / OFF signal S42a, power supply status signal S42b, battery drive signal S42c, status) for controlling the power supply unit 30 and the like in accordance with the program written in the storage device 43. The display signal S42d, the FAN drive signal S42e, etc.) are output from the output port. The storage device 43 is a CPU
It may be provided outside of 42, and is the same in other embodiments described below. The present embodiment has a simple circuit configuration of only the CPU 42 and its peripheral components, as compared with the function control circuit 22 in which a large number of components as shown in FIG. 17 are connected in a complicated manner.

(B) Operation The general operation of the power supply system shown in FIG. 1 will be described. First, an internal / external state of a power supply including the driven device 50 and an alarm are converted into respective on / off signals by the power supply information monitoring circuit 41, and these on / off signals are input to the CPU 42.
For example, with respect to the state of the power supply SW, an ON signal is output when the power supply SW is turned on, and an off signal is output when the power supply SW is turned off.
Enter in 42. Also, regarding the state of output overvoltage,
An ON signal is input to the CPU 42 as an alarm when the output voltage exceeds the guaranteed operating range.

The CPU 42 monitors ON / OFF of each input signal given from the monitoring circuit 41 according to the program written in the storage device 43. Then, a control signal according to the situation is output from each output port. By this control signal, the converters 31, 36-1, 36-2, 39
Each function such as on / off of driving of the drive and status display by the status display unit 38 is controlled.

FIG. 2 is a flow chart showing an example of program control by the CPU 42 of FIG. 1, and FIG. 3 is a flow chart showing an example of each state control of FIG. Hereinafter, the detailed operation of the power supply system of FIG. 1 will be described with reference to the flowcharts of FIGS. 2 and 3.

As shown in FIG. 2, steps (hereinafter referred to as "S
"T". ) When the operation starts at 1, the CPU 42 sets the S
At T2, the current state of the power supply system (for example, all outputs off, all outputs on, and backup three states) is determined, and one of the three states is selected and each state control flow (all outputs off in ST3, ST4). All outputs are turned on or any one of ST5 backups) is jumped to. ST3, ST4
In each state control flow of ST5, when the output SW is turned on / off, or when the signal is inverted due to a failure occurrence, the output signal is turned on / off according to these situations to turn on / off the output sequence or alarm. Control functions such as display and change to other states. If there is no signal inversion, the flow is ended and the process returns to the main flow. CPU 42 is ST
At 6, it is determined whether or not both inputs are present. When both inputs are present, the process returns to ST2, the above process is repeated, and when both inputs are not present, the process ends at ST7.

Next, the operation of each state control flow shown in FIG. 3 will be described. When all outputs OFF in ST3 is selected in the main flow of FIG. 2, the CPU 42 determines in ST3-1 whether or not there is an abnormality in output activation.
The process ends at -7. When the output startup is normal,
In ST3-2, it is determined whether or not the power supply SW is on. If it is off, the process ends in ST3-7. When the power SW is on, the control signal is output from the CPU 42 and ST3
Each output sequence is started at -3, and FAN at ST3-4.
37 is activated, the normal output state is displayed by the state display section 38 in ST3-5, and all outputs are turned on in ST3-6.

When all outputs are in the ON state, the AC power supply Si input through the power supply SW is converted into DC by the AC / DC converter 31, and this is rectified by the diode 32, and the DC power supply S32 from this diode 32. Is output. In addition, the AC power supply Si is DC by the charger 33.
And the battery 34 is charged and the AC
The power supply power Si is the DC power supply S from the control converter 39.
It is converted to 39 and supplied to the control unit 40. The DC power S32 output from the diode 32 is DC / DC
Predetermined DC power source power S in converters 36-1 and 36-2
It is converted into o1 and So2 and supplied to the driven device 50. Further, the power supply state signal S output from the CPU 42
42b is also sent to the driven device 50, and the driven device 50
The device signal S50 from the device is supplied to the monitoring circuit 41 on the power supply unit 30 side.

When all outputs of ST4 are turned on, C
In ST4-1, the PU 42 determines whether the output is normal and whether the power supply SW is in the on state. When the output is normal and the power supply SW is in the on state, the process proceeds to ST4-6. When the output is abnormal or the power SW is in the off state, the CPU 42 stops each output sequence in ST4-2, and ST4
The FAN 37 stops at -3, and the status display unit 3 at ST4-4.
The normal output state is not displayed by 8, the output alarm is displayed, and all outputs are turned off in ST4-5.

The CPU 42 determines in ST4-6 whether or not the AC input is normal. When the AC input is normal,
At ST4-10, all outputs are turned on. When the AC input is abnormal, the battery input is switched in ST4-7 by the battery drive signal S42c output from the CPU 42. When the battery input is switched, the output of the battery 34 is rectified by the diode 35 to output the DC power supply S35, and the DC / DC converter 36-
1, 36-2, and this DC / DC converter 3
6-1, 36-2 output DC power source So1,
So2 is supplied to the driven device 50.

Further, the output DC power source power of the battery 34 is given to the control converter 39, converted into a predetermined DC power source power S39 by the control converter 39, and then the control section 4 is operated.
Supplied to zero. After the battery input is switched in ST4-7, the status display section 38 displays the power failure state in ST4-8, the backup state is entered in ST4-9, and the all output is turned on in ST4-10. .

When ST5 backup is selected in the main flow of FIG. 2, the CPU 42 determines in ST5-1 whether the output is normal, whether there is a battery remaining amount, power source S
When W is on, it is determined whether the output is normal, the battery has a remaining amount, and the power SW is on, the process proceeds to ST5-6. When the output is abnormal, there is no remaining battery power, or the power switch is off, each output sequence is stopped in ST5-2, the FAN 37 is stopped in ST5-3, and the status display unit 3
The normal output state is hidden in ST5-4 by 8, and the output alarm is displayed. Then, in T5-5, all outputs are turned off, and the process proceeds to ST5-6.

The CPU 42 determines in ST5-6 whether or not the AC input is restored. If not, all outputs are turned on in ST5-10. When the AC input is restored, the CPU 42 switches the AC input in ST5-7, and the AC / DC converter 31
Output of the DC / DC converters 36-1, 36-2
DC power source So1 and So2 are driven by the driven device 50
And is supplied to the DC by the control converter 39.
The power supply power S39 is supplied to the control unit 40. Then, the status display unit 38 cancels the power failure status display in ST5-8, and all outputs are turned on in ST5-9 and ST5-10.

In this way, each function is controlled by the program control of the CPU 42 according to the state of the power supply. or,
When the number of outputs is increased or decreased, or another function is added or deleted, the circuit is simply an addition of an input / output circuit to the CPU 42, and control is performed by changing the program of the storage device 43.

(C) Effects The present embodiment has the following effects (i) to (iii). (I) Since the power supply system is controlled by the program control using the CPU 42, the number of parts in the conventional problem (a) can be reduced and the reliability is improved. (Ii) Since complicated control such as status judgment and control timing of the power supply system is collectively processed in the CPU 42 according to the program written in the storage device 43, even the conventional problem (b) in which the circuit becomes complicated is controlled. , Can be easily realized.

(Iii) Even if the number of outputs increases, a new function is added, or the control method is changed, the CPU 42
This can be realized by providing the input / output port of 4 and slightly changing the program of the storage device 43, and the design man-hour of the conventional problem (c) can be significantly reduced.

(Second Embodiment) (A) Configuration FIG. 4 is a schematic configuration block diagram of a power supply system having multiple outputs and multiple functions, showing a second embodiment of the present invention.
Elements common to those in FIG. 1 showing the first embodiment are designated by common reference numerals.

In this power supply system, instead of the control unit 40 in the power supply unit 30 of FIG. 1, a control unit 40A having a different structure is provided in the power supply unit 30A. In the control unit 40A, an A / D conversion circuit 41-1 and a status signal monitoring circuit 41-2 are provided in place of the monitoring circuit 41 of FIG. 1, and a CPU 42 similar to that of FIG. 1 is connected to the output side thereof. There is. The A / D conversion circuit 41-1 includes analog power supply information of each power supply information (for example, output information of each output voltage and each output current, AC input voltage, battery voltage, battery discharge current, ambient temperature, internal temperature). Power supply surroundings, etc.)
Is a circuit for converting the signal into a digital signal and outputting it to the CPU 42. The status signal monitoring circuit 41-2 is a circuit that inputs the device signal S50, the power status signal, etc. of each power information, monitors the status of these signals, and outputs them to the CPU 42.
Other configurations are similar to those of the power supply system of FIG.

(B) Operation The general operation of the power supply system shown in FIG. 4 is the same as that of the first embodiment, so only the different points will be described. First, analog power supply information such as output voltages and output currents inside and outside the power supply is converted into digital data by the A / D conversion circuit 41-1. At this time, the A / D conversion circuit 41-1 digitizes the data so as to include the point to be detected. For example, as for the output voltage, the output voltage is digitized so that the output voltage includes a voltage determined to be an overvoltage and a voltage determined to be an undervoltage. Then, the A / D conversion circuit 41
Each bit signal digitized by -1 is input to the CPU 42.

The CPU 42 monitors the respective bit signals according to the program written in the storage device 43,
Outputs various control signals. For example, if the digital data changes due to a failure or the like and exceeds the specified value written in the program, the CP is adjusted according to the situation set by the program.
The output signal of U42 is turned on / off, and functions such as on / off of power supply output and analog display are controlled.

If it is desired to change the initially set detection point, the setting value of the program of the storage device 43 is changed. Further, even when controlling a plurality of detection points for one piece of analog power supply information such as output voltage, it is not necessary to add a detection circuit and an input port, and a plurality of detection points are set in the program of the storage device 43. Do that.

(C) Effects The present embodiment has the following effects (i) and (ii). (I) Since the analog power supply information inside and outside the power supply is converted into digital data by the A / D conversion circuit 41-1 and controlled in the CPU 42, for example, when the information detection point is changed, In the first embodiment, it is necessary to add, delete, or change the setting parts of the monitoring circuit 41, whereas in the present embodiment, the storage device 43 is used.
The control can be easily performed only by changing the set value of the program inside. As a result, the design man-hours of the conventional problem (c) can be significantly reduced.

(Ii) For example, even when detection points are added within the same voltage or current, the detection circuit and the input port are required for each detection point in the first embodiment, but this embodiment In the form, the control can be performed without adding the detection circuit, and the increase in the number of components of the conventional problem (a) can be avoided.

(Third Embodiment) (A) Configuration FIG. 5 is a schematic configuration block diagram of a power supply system having multiple outputs and multiple functions, showing a third embodiment of the present invention. The elements common to those shown in FIG. 1 are denoted by the same reference numerals. 6A and 6B are external views showing the power supply unit of FIG.

In the power supply unit 30B of this embodiment, a status display section 38A having a different structure is attached to the housing 61 of the power supply unit 30B in place of the status display section 38 such as the LED in FIG. The information displayed at 38A is readable from the outside.

In the power supply unit 30B, a control section 40B having a different structure from the control section 40 of FIG. 1 is provided. Inside the control unit 40B, a monitoring circuit 4 for each power source information similar to that in FIG.
1 is provided, and a CPU 42A having a configuration different from that of the CPU 42 of FIG. 1 is connected to this output side. CPU 42A
Has a built-in or external storage device 43 in which a program is written, and based on the output signal of the monitoring circuit 41, each control signal (for example, each output ON / OFF signal S42a, power supply state signal S42b, battery drive). Signal S42c, FAN drive signal S42e, etc.) and display signal S42
f is output and given to the status display section 38A.

The status display section 38A is displayed, for example, in FIG. 6 (a).
6A, or the LCD monitor 38A-2 as shown in FIG. 6B.
It is composed of. The housing 61 of the power supply unit 30B is connected with an input cable 62 for inputting the AC power supply power Si, and an output cable 63 for outputting the DC power supply powers So1 and So2. Other configurations are similar to those of the power supply system of FIG.

(B) Operation Since the general operation of the power supply system shown in FIG. 5 is almost the same as that of the first embodiment, only different points will be described. As in the first embodiment, the state of the inside and the outside of the power source including the driven device 50 and the alarm are converted into each ON / OFF signal by the monitoring circuit 41 of each power source information in the control unit 40B, and these signals are converted. It is input to the CPU 42A. In the CPU 42A,
According to the program written in the storage device 43, ON / OFF of each of those input signals is monitored. Power switch on /
When the signal is inverted due to turning off or failure, the segment 38A-1 or LCD monitor 3 according to the situation
The display signal S42f to 8A-2 is turned on / off to light the display. The status display section 38A is a segment 38A.
When it is constituted by -1, it is displayed by, for example, alphanumeric characters. The status display section 38A is the LCD monitor 38A.
If it is configured with -2, it is displayed with characters or the like indicating the state.

(C) Effects This embodiment has the following effects (i) to (iii). (I) In the conventional power supply system of FIG. 17, in order to display the power supply status and alarm, the analog circuit becomes complicated. Therefore, a plurality of LEDs provided in the status display unit 18 are provided for each status. A display method is generally used. However, in this method, when many points are displayed, it is difficult to grasp the power supply status at a glance as described in the problem (d). In addition, when a place or state to be displayed is added, an LED needs to be added, which leads to an increase in the number of parts and a complicated circuit. In order to solve these problems,
In the present embodiment, the CPU 42A controls the display signal S42f to configure the segment 38A- which constitutes the state display unit 38A.
1 and the LCD monitor 38A-2, the state of the power supply unit 30B and the alarm are displayed in more detail. As a result, the state of the power supply unit 30B can be easily grasped, and the number of maintenance steps can be reduced.

(Ii) In general, the power supply unit 30B needs to be checked for operation, evaluated, and analyzed by the power supply unit itself at the time of shipping or at the time of abnormality. Therefore, the confirmation result can be displayed on the status display section 38A, and the number of steps can be reduced. In particular, the status display unit 38A displays the LCD monitor 38A-
In the case of 2, by displaying a typical operation confirmation method and the like, anyone can perform appropriate work, and safety and reliability are improved.

(Iii) When adding a place or state to be displayed, other alphanumeric characters or the like are displayed in the case of the segment 38A-1, and the added place or state is displayed in the case of the LCD monitor 38A-2. By changing the program in the storage device 43 so as to display the characters to be displayed, it is possible to easily add the display without increasing the number of parts.

(Fourth Embodiment) (A) Configuration FIG. 7 is a schematic configuration block diagram of a multi-output, multi-function power supply system showing a fourth embodiment of the present invention.
Elements common to those in FIG. 1 showing the first embodiment and FIG. 6 showing the third embodiment are designated by common reference numerals.

This power supply system has a power supply unit 30C having a structure different from that of the power supply unit 30 shown in FIG. The power supply unit 30C includes power supply units 31-38, a control unit 40, an external communication circuit 44 that is a communication unit, and an external connection connector 45.

The power supply units 31-38 receive the AC power supply power Si from the input cable 62 and supply the DC power supply powers So1, S2.
1 is a circuit for outputting o2 from the output cable 63.
AC / DC converter 31, diodes 32 and 35,
It is composed of a charger 33, a battery 34, DC / DC converters 36-1 and 36-2, a FAN 37, a status display section 38, and a control converter 39. Power supply 31
The control unit 40 connected to −38 includes a monitoring circuit 41 for each power supply information, and a CPU 42 having a storage device 43. The external communication circuit 44 is connected to the input / output port of the CPU 42, and the external communication circuit 44 is further connected to the external connection connector 45.

The power supply unit 30C has an output cable 63.
1 is connected to a driven device 50A having a configuration different from that of the driven device 50 of FIG. Also, the power supply unit 30C
Connector 45 is connected to the power source status signal S42b and the device signal S
50 and a control unit 51 in the driven device 50A via an external connection cable 64 for transmitting and receiving the status display signal S42d and the like. The control unit 51 in the driven device 50A has a communication function 51 for communicating with the cable 64.
a, a clock function 51b, and the like. Information on the CPU 42 on the power supply unit 30C side is transferred to the driven device 5 via the external communication circuit 44, the connector 45, and the cable 64.
It is transmitted to the communication function 51a in the control unit 51 on the 0A side,
Information on the driven device 50A side is transmitted to the CPU 42 in the control unit 40 via the communication function 51a in the control unit 51, the cable 64, the connector 45, and the external communication circuit 44. An input unit 52 such as a keyboard and a touch panel and a display unit 53 such as a display are connected to the control unit 51 of the driven device 50A.

(B) Operation Since the operation of the power supply unit 30C in FIG. 7 is almost the same as that of the power supply unit 30 of the first embodiment, only different points will be described. The monitoring circuit 41 in the control unit 40 converts the internal and external states of the power supply including the driven device 50A and the alarms into ON / OFF signals, and these signals are output to the CPU.
42 is input. The CPU 42 monitors ON / OFF of each of the input signals according to the program written in the storage device 43. When the signal is inverted due to the on / off of the power switch or the occurrence of a failure, the power information corresponding to this situation is provided by the external communication circuit 44, the connector 45, and the cable 6.
4 to the communication function 51a of the control unit 51 in the driven device 50A.

The control unit 51 in the driven device 50A processes the power supply information sent from the power supply unit 30C and displays the information on the display unit 53. When the device user or the administrator wants to see the current power supply information, the input unit 52
Input the command to display the power supply information. This command is issued by the communication function 51 of the control unit 51 in the driven device 50A.
a, cable 64, connector 45, and external communication circuit 4
4 to the CPU 42 in the control unit 40. CP
Upon receiving the command, the U42 controls to output the power supply information to the driven device 50A.

Further, from the power supply unit 30C to the driven device 5
In the output content to 0A, not only the power supply information is displayed, but also the corresponding method (for example, reconfirmation or replacement) after that is displayed on the display unit 53 to prompt appropriate treatment. Further, from the driven device 50A having the clock function 51b, when the alarm occurs, the date and time at that time are also displayed together with the display unit 5.
Display on 3 to inform the administrator when an abnormality or power failure occurred.

(C) Effects The present embodiment has the following effects (i) to (iv). (I) In the conventional power supply system of FIG. 17 and the power supply system of FIGS. 5 and 6 of the third embodiment, the power supply unit 1
Since the status display sections 18 and 38A are provided in the 0 and 30B, the status and abnormality of the power supply units 10 and 30B may not be immediately known to the device user or the administrator as in the problem (e). Moreover, it is not possible to know when an abnormality or power failure has occurred. In order to solve such problems,
In the present embodiment, the power supply information processed by the CPU 42 on the power supply unit 30C side is displayed on the display unit 53 on the driven device 50A side. It is possible to reliably and easily notify whether or not there is the power supply unit 30C from the power supply system.

(Ii) Using the input unit 52 on the side of the driven device 50A, a power source information display command is sent to the CPU 42 on the side of the power source unit 30C, and the power source information is displayed on the display unit 53 on the side of the driven device 50A. By doing so, the power source information can be easily notified to the device user or the administrator at any time.

(Iii) If not only the power source information is displayed on the display unit 53 on the side of the driven device 50A but also the corresponding method after that is displayed, anyone can handle the displayed power source status without a manual. Appropriate treatment can be taken.

(Iv) Clock function 5 in the driven device 50A
By displaying the alarm generation time on the display unit 53 using 1b, it is possible to easily confirm when the alarm has occurred, which is useful for factor analysis when analyzing the alarm. Because of the above-described effects (i) to (iv), in the present embodiment, it is possible to reduce maintenance man-hours, man-hours for analyzing abnormality or power environment, and improve safety and reliability.

(Fifth Embodiment) In the power supply system of FIG. 1 showing the first embodiment, each power supply information (for example, each output voltage, each output current, AC input voltage, device signal S50, etc.).
The power supply abnormality (overvoltage, undervoltage, overcurrent) is detected by the monitoring circuit 41 to which is input, and the CPU 42 determines the power supply alarm based on the detection result.
If the CPU 42 determines that it is an alarm, it controls each control signal (for example, each output on / off signal S42a, power supply state signal S42b, etc.) and shifts to the all output off state. At this time, the CPU 42 judges the content of the alarm and displays the judgment result on the status display section 38. Here, in the power supply system of FIGS. 5 and 6 showing the third embodiment, the status display unit 38 provided in the housing 61 of the power supply unit 30B.
A (eg, segment 38A-1 or LCD monitor 3
8A-2) Display the alarm content. As a result, the cause of the alarm is removed or the power supply units 30, 3 are
Replace 0B.

Although the CPU 42 judges and displays an alarm in this way, when a power failure occurs or the input SW of the AC power supply Si is turned off, the power supply to the power supply unit 30 is stopped, so that the power supply voltage of the CPU 42 ( "VC
"C". ) Drops and the alarm information disappears. Therefore, a serious abnormality (for example, converters 31, 36-1, 36-2, 39) inside the power supply unit 30 is generated.
If the AC input is cut off, the CPU will
Since the alarm content is erased because it is reset when VCC of 42 returns, the CPU 42 tries to operate normally after the AC input is turned on, so that the circuit in which the abnormality occurs operates. ) There is a risk of causing smoke and fire in the worst case. Further, since the generated alarm contents are erased, the power supply operation at the time of abnormality cannot be specified, which may increase the analysis man-hour.

Therefore, in the fifth embodiment, the CPU
By storing the alarm content determined by 42 in the non-volatile memory, the AC input to the power supply unit 30 is cut off,
Even if the VCC of the CPU 42 drops, this CPU 4
At the time of returning to the VCC of 2, the information stored in the non-volatile memory is read to limit the operation until the cause of the abnormal state that occurred is eliminated. Thereby, the progress of the abnormal state is stopped and the expansion of the abnormal state is prevented.

The details of this embodiment will be described below. (A) Configuration FIG. 8 is a schematic configuration block diagram of a power supply system having multiple outputs and multiple functions, showing a fifth embodiment of the present invention.
Elements common to those in FIG. 1 showing the first embodiment are designated by common reference numerals.

The power supply system of this embodiment has a power supply unit 30D having a different configuration from the power supply unit 30 of FIG. In the power supply unit 30D, a nonvolatile memory 4 such as a flash memory is newly added to the power supply unit 30 of FIG.
6 is added. Non-volatile memory 46
Is a memory which is connected to the CPU 42 and stores the alarm information judged by the CPU 42, and has a function of holding the information even when the VCC is cut off. Other configurations are almost the same as those in the first embodiment.

FIG. 9 is a conceptual diagram of the power supply unit 30D shown in FIG. Power supply unit 31-3 in this power supply unit 30D
8 is the AC / DC converter 31 and the diode 3 of FIG.
2, 35, charger 33, battery 34, DC / DC
It is composed of converters 36-1 and 36-2, a FAN 37, a status display section 38, and a control converter 39.
The monitoring circuit 41 inputs each power source information, detects a power source abnormality (for example, overvoltage OVP, overcurrent OCP), and the CPU 42 determines an alarm based on the detection result.

(B) Operation FIG. 10 is a flowchart showing the operation of FIG. For example, in ST10, while the power supply unit 30D is performing normal normal operation control, the monitoring circuit 41 causes each D
C power supply power So1, So2 overvoltage OVP and overcurrent OC
P is being monitored.

Output abnormality of the DC power supply So1, So2 due to external or internal power supply (overvoltage OVP or overcurrent O
CP) occurs, the overvoltage OVP or the overcurrent OCP is detected by the monitoring circuit 41 in ST11, and the CPU
42, it is judged as an alarm.

In ST12, a transition to the alarm state is performed, the output on / off signal S42a output from the CPU 42 turns off the outputs of the DC power supplies So1 and So2, and the power supply operation is stopped. The device signal S50 from 50 is not accepted at all. Then, in ST13, the alarmed information is written in the non-volatile memory 46.

The input of the AC power supply Si is cut off, and the CPU 4
When the VCC of 2 drops, the CPU 42 in ST14
The control operation of is stopped and the information in the CPU 42 is erased. When the input of the AC power supply Si is restored, the CPU 4
VCC of 2 rises, and in ST15, the CPU 42 resets (initial operation of initial setting).

In ST16, the previous power supply alarm information is fetched from the non-volatile memory 46 and checked by the CPU 42. In ST17, if the alarm information is off, the normal control operation is started, and if it is on, the alarm state is entered.

By the above operations of ST10 to ST17,
Even if the AC power supply Si is disconnected after the alarm is generated, the previous alarm information can be retained in the non-volatile memory 46 and the power supply operation can be stopped. This prevents the abnormal state from proceeding and expanding.

(C) Effect When an abnormality occurs inside or outside the power source and an alarm is generated, the input of the AC power source power Si is cut off and the V of the CPU 42 is reduced.
Even when CC is once lowered and reset, since the alarm information is held in the nonvolatile memory 46, C
After the reset operation of the PU 42, the alarm state is restored and the alarm can be held without operating the circuit in which the abnormality has occurred, and the expansion and progress of the abnormal portion can be suppressed.

(Sixth Embodiment) (A) Configuration FIG. 11 is a schematic configuration block diagram of a power supply system having multiple outputs and multiple functions, showing a sixth embodiment of the present invention. Elements common to those in FIG. 8 showing the form are designated by common reference numerals.

The power supply system of this embodiment is provided with a power supply unit 30E having a structure different from that of the power supply unit 30D shown in FIG. The power supply unit 30E has a configuration in which a reset SW 47 is added to the power supply unit 30D of FIG. The reset SW 47 is a switch that is connected to the input port of the CPU 42 and releases the alarm state. Other configurations are the same as those in FIG. 8 of the fifth embodiment.

FIG. 12 is a conceptual diagram of the power supply unit 30E shown in FIG. In the power supply unit 30D of FIG. 9, the power supply operation cannot be restarted when the cause of the abnormality can be eliminated. Therefore, in FIG. 12 of the present embodiment, the reset SW is
47 is provided with a canceling function for shifting the power supply operation in the alarm state to the normal control operation by turning on the reset SW 47.

(B) Operation FIG. 13 is a flow chart showing the operation of FIG.
Elements common to those in the flowchart of FIG. 10 showing the operation of the fifth embodiment are designated by common reference numerals.

In the normal operation of ST10, the operation is the same as the operation of the fifth embodiment shown in FIG. 10 from the input of the AC power supply Si is turned on until the power is turned on again in ST17.

After that, the cause of the abnormality is removed and the reset SW is set.
When the user presses 47, the ON state of the reset SW 47 is detected in ST18, the alarm information is turned off by the CPU 42, and the power supply unit 30E shifts to the normal operation in ST19. If the reset SW 47 is not pressed, this is detected in ST18 and the alarm state remains held.

(C) Effect If there is no cause of abnormality in the power supply itself, the power supply can be operated by the reset SW 47 after removing the cause. Furthermore, since the content of the alarm when an abnormality occurs is stored in the non-volatile memory 46, the abnormality in the power supply when the abnormality occurs can be clarified, and the number of analysis steps can be reduced.

(Seventh Embodiment) FIG. 14 is a conceptual diagram of a power supply unit showing a seventh embodiment of the present invention.
Elements common to the elements in FIG. 12 showing the power supply unit 30E of the above embodiment are designated by common reference numerals.

In the power supply unit 30F of this embodiment, a reset SW 48 is added to the power supply unit 30E of FIG. The reset SW 48 is a switch that is connected to the input port of the CPU 42 and releases the alarm state. Other configurations are similar to those of the sixth embodiment shown in FIG.

In the alarm clearing method of FIGS. 12 and 13, when the power conversion portion of the power supply unit 31-38 in the power supply unit 30E has a serious abnormality such as damage to parts, it cannot be cleared by anyone other than the manufacturer. Need to Therefore, it is necessary not only to hold the occurrence of the alarm by the non-volatile memory 46 but also to make the alarm judgment in the CPU 42 detailed, and to save not only the alarm occurrence information but also the contents of the occurred alarm in the non-volatile memory 46. Therefore, in this embodiment, the latest alarm information is stored separately from the alarm content at the time of the previous occurrence without overwriting the nonvolatile memory 46 with the latest alarm information.

[Alarm due to external cause of power supply] =
Overcurrent OCP operation, "Alarm due to internal cause of power supply"
= It is possible to classify into overvoltage OVP operation and circuit failure, and it is discriminated whether it is an abnormality of the power source itself or an abnormality other than the power source. This identification divides the release of the alarm state into "abnormalities other than power supply" and "abnormalities in the power supply itself" so that the user can only release "abnormalities other than power supply", and the manufacturer can identify "abnormalities in the power supply itself". The reset SW is divided into a reset SW 47 and a reset SW 48 so that the reset SW 47 can be released. The reset SW 47 is provided outside the power supply, and the reset SW 48 is provided inside the power supply at a place where the user cannot operate.

(B) Operation FIG. 15 is a flow chart showing the operation of FIG.
Elements common to those in the flowchart of FIG. 13 showing the operation of the sixth embodiment are designated by common reference numerals.

In the normal operation of ST10, the operation is the same as the operation of FIG. 13 from the input of the AC power supply Si being turned on to the power supply of ST17 being in the alarm state again. afterwards,
In the case of an alarm due to an abnormality outside the power supply, if the cause of the external abnormality is removed and the reset SW 47 is pressed, the CPU 42 determines in ST20 whether the abnormality cause is the internal cause or the external cause. In this case, it is an external cause,
The CPU 42 turns off the alarm information, and the power supply unit 30
F shifts to the normal operation of ST21. Reset SW47
If is not pressed, the alarm state is held by the non-volatile memory 46.

If it is determined in ST20 that the cause of the abnormality is an internal cause, a power alarm state is entered in ST22, and the reset SW48 provided inside the power source is pressed to release the alarm state in ST23 and return to normal operation. Become.

(C) Effects This embodiment has the following effects (i) to (iii). (I) If there is no cause of abnormality in the power supply unit 30F itself, after removing the cause, the reset SW 47 can enable power supply operation.
In order to prevent smoke and fire, the user can leave the power supply operation stopped and prevent smoke and fire from occurring due to the progress of abnormal parts.

(Ii) When the maker operates the power supply unit 30F which has an abnormality in the power supply, it can be operated by the reset SW 48 inside the power supply, so that appropriate processing can be performed. In addition, since the manufacturer can analyze the abnormal state while storing it, the time can be shortened as compared with the conventional analysis in the power supply unit in which the abnormal state is widened. (iii) The contents of the alarm when an error occurs are stored in the nonvolatile memory 4
Since the data is stored in No. 6, the power supply abnormality at the time of occurrence of a defect becomes clear, and the analysis man-hour can be reduced.

The present invention is not limited to the above embodiment, and various modifications can be made. For example, power supply unit 3
0, ... To increase the number of DC power source outputs So1, So2 output from the DC / DC converters 36-1, 36-
If the number of 2 is increased or the backup by the battery 34 is unnecessary, the charger 33, the battery 34 and the diode 35 are omitted to simplify the circuit configuration, or another circuit is added to add a function. Good.

[0101]

As described in detail above, according to the first and second aspects of the present invention, the CPU controlled by the program changes the state of the inside of the power source and the outside of the power source including the driven device and each alarm. Since each output and each function are controlled collectively, the number of parts can be reduced and the reliability can be improved. Furthermore, since complicated control such as power supply status judgment and control timing is collectively processed in the CPU according to an internal program, it is possible to easily realize the conventional control in which the circuit becomes complicated. Moreover, even if the number of outputs increases, new functions increase, control methods change, etc.
It can be realized by providing a U input / output port and slightly changing the internal program, which can significantly reduce the design man-hours.

According to the third invention, an A / D conversion circuit is provided in the monitoring circuit for analog information such as output voltage, output current, input power supply voltage, ambient temperature and internal temperature.
Since the digital data converted by the / D conversion circuit is input to the CPU and the central processing is performed according to the program in the CPU, when the information detection point is changed, in the first or second invention, While it is necessary to add, delete and change the setting parts of the monitoring circuit, this third
According to the invention of (1), the control can be easily performed only by changing the set value of the program in the CPU, and thus the number of design steps can be significantly reduced. Furthermore, even if a detection point is added within the same voltage or current, the first or second detection point is added.
In the invention described above, a detection circuit and an input port are required for each detection point, but in the third invention, control can be performed without adding a detection circuit, and an increase in the number of parts can be avoided.

According to the fourth invention, the display unit is provided on the outer surface of the housing that houses the power supply unit, the monitoring circuit, and the CPU, and the information inside and outside the power supply and the corresponding method can be read at a glance. By doing so, it is possible to easily grasp what kind of state the power source is in by displaying the state of the power source and the alarm in more detail on the display unit, thereby reducing maintenance man-hours. In addition, since it is generally necessary to check, evaluate, and analyze the operation of the power supply itself at the time of shipment or in the event of an abnormality, displaying these confirmation results on the display unit can reduce the number of man-hours required for proper work. It can be done and safety and reliability are improved. In addition, when adding a place or state to be displayed, it is possible to easily add the display without increasing the number of parts simply by changing the internal program of the CPU.

According to the fifth aspect of the invention, the communication means for transmitting the display signal to the outside is provided on the output side of the CPU, and the display unit is provided on the driven device side, and the information inside the power supply and the corresponding method to this information are provided. Since it is possible to read it at a glance from the display unit, it is possible to notify the user or administrator of the power condition in a reliable and easy-to-understand manner without removing the power supply unit from the power supply system. You can

According to the sixth invention, since the input unit and the display unit are provided on the driven device side, the power unit information can be easily displayed at any time by issuing a power source information display command using the input unit. Can be displayed on the screen to notify the device user or administrator. Further, not only the display of the power supply information but also the subsequent correspondence method and the like are displayed on the display unit, so that anyone can take appropriate measures against the displayed power supply status without a manual.

According to the seventh invention, when the power source information such as the abnormality of the power supply or the power failure is communicated to the driven device, the time when the abnormality or the power failure occurs is driven by using the clock function of the driven device. Since the information is displayed on the display unit on the device side, the device user or administrator can read the generation time of information inside and outside the power supply. In this way, by displaying the alarm occurrence time, you can easily check when the alarm occurred,
It can be useful for factor analysis when analyzing an alarm. Therefore, it is possible to reduce maintenance man-hours, man-hours for analyzing abnormality and power environment, and improve safety and reliability.

According to the eighth invention, the alarm state information is stored in the non-volatile memory, and even when the CPU is reset, the previously generated alarm information is read from the non-volatile memory and is the same as that before the reset of the CPU. Since the alarm status of the above is maintained, even if an abnormality occurs inside or outside the power supply and an alarm occurs, even if the input of AC power is cut off and the VCC of the CPU drops once and reset occurs, Since the alarm information is held in the property memory, the alarm can be held without operating the circuit in which the abnormality occurs again after the reset operation and the abnormal state is expanded, and the expansion and progress of the abnormal portion can be suppressed.

According to the ninth invention, since the non-volatile memory and the reset SW are provided, if there is no cause of abnormality in the power supply itself, the power source can be operated by the reset SW after the cause is removed. For example, in order to prevent smoke and fire, the user can leave the power supply operation stopped and prevent smoke and fire from occurring due to the progress of abnormal parts. Moreover, when the manufacturer operates a power supply with an abnormal internal power supply, it can be operated by the reset SW inside the power supply, so that appropriate processing can be performed, and in addition, the state in which the abnormal state has occurred is saved. Since it can be analyzed by the manufacturer, the time can be shortened as compared with the conventional analysis by the power supply device in which the abnormal state has expanded. Further, since the content of the alarm when an abnormality occurs is stored in the non-volatile memory, the abnormality of the power supply when the abnormality occurs can be clarified, and the analysis man-hour can be reduced.

[Brief description of drawings]

FIG. 1 is a schematic configuration block diagram of a power supply system having multiple outputs and multiple functions according to a first embodiment of the present invention.

FIG. 2 is a flowchart showing an example of program control of FIG.

FIG. 3 is a flowchart showing an example of each state control of FIG.

FIG. 4 is a schematic configuration block diagram of a power supply system having multiple outputs and multiple functions, showing a second embodiment of the present invention.

FIG. 5 is a schematic configuration block diagram of a power supply system having multiple outputs and multiple functions according to a third embodiment of the present invention.

6 is an external view of the power supply unit of FIG.

FIG. 7 is a schematic configuration block diagram of a power supply system having multiple outputs and multiple functions, showing a fourth embodiment of the present invention.

FIG. 8 is a schematic configuration block diagram of a power supply system having multiple outputs and multiple functions according to a fifth embodiment of the present invention.

9 is a conceptual diagram of the power supply unit of FIG.

FIG. 10 is a flowchart showing the operation of FIG.

FIG. 11 is a schematic configuration block diagram of a power supply system having multiple outputs and multiple functions according to a sixth embodiment of the present invention.

FIG. 12 is a conceptual diagram of the power supply unit of FIG.

13 is a flowchart showing the operation of FIG.

FIG. 14 is a conceptual diagram of a power supply unit showing a seventh embodiment of the present invention.

FIG. 15 is a flowchart showing the operation of FIG.

FIG. 16 is a minimum basic configuration block diagram showing a conventional power supply system.

FIG. 17 is a basic configuration block diagram of a conventional power supply system having multiple outputs and multiple functions.

[Explanation of symbols]

30, 30A-30F power supply unit 31 AC / DC converter 32,35 diode 33 Charger 34 battery 36-1, 36-2 DC / DC converter 37 FAN 38, 38A status display 38A-1 segment 38A-2 LCD monitor 39 Control converter 31-38 Power supply 40, 40A-40D control unit 41 monitoring circuit 41-1 A / D conversion circuit 41-2 Status signal monitoring circuit 42, 42A CPU 43 storage device 44 External communication circuit 45 Connector for external connection 46 non-volatile memory 47, 48 Reset SW 50,50A Driven device 51 control unit 51a communication function 51b Clock function 52 Input unit 53 display unit

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 5B011 EA02 GG17                 5G065 BA01 BA02 BA04 DA01 DA06                       EA06 FA02 GA04 HA04 JA01                       JA02 JA07 LA01 LA02 MA01                 5H730 AA12 AS19 AS21 BB82 CC01                       FD01 FD11 FD21 FD31 FD61                       FV09 XX32 XX33 XX35 XX38                       XX42 XX50

Claims (9)

[Claims] 1. An AC power source is input and converted into a DC power source, and the DC power source is DC / DC converted and a plurality of stabilized external DC power sources are output and supplied to an external driven device. At the same time, the power supply section for converting the AC power supply to AC / DC and outputting the stabilized internal DC power supply, and the power supply information of the inside of the power supply and the outside of the power supply including the driven device are monitored to monitor the power supply status. And a monitoring circuit that outputs an alarm as a digital signal, the digital signal is input, the digital signal is centrally processed according to a program, and the plurality of external DC power supplies are turned on / off according to each change in the power supply state and the alarm. And a central processing unit that outputs a plurality of control signals for collectively controlling the respective functions in the power supply unit, and a power supply system. 2. The AC power source power is input and converted into a first DC power source power, the AC power source power is converted into a DC power, and a battery is charged to generate a second DC power source power. Alternatively, the plurality of external DC power supplies, which are obtained by converting the second DC power supply power to DC / DC and stabilized, are supplied to an external driven device, and the AC power supply is AC / DC converted, or the second The power supply unit that outputs stabilized internal DC power supply from the DC power supply, and the power supply information between the inside of the power supply and the outside of the power supply including the driven device is monitored, and these power supply states and alarms are output as digital signals. A monitoring circuit and the digital signal are input, the digital signal is centrally processed according to a program, and each function of the plurality of external DC power supplies is turned on / off and each function in the power supply unit is controlled by each change of the power supply state and alarm. Power supply system characterized by comprising a central processing unit for outputting a plurality of control signals for controlling the Batch. 3. The power supply system according to claim 1, further comprising, as the monitoring circuit, an analog / digital conversion circuit that converts analog information in the power supply information into a digital signal and supplies the digital signal to the central processing unit. 4. The central processing unit has a function of outputting a plurality of control signals, a display signal of information corresponding to a power state and an alarm, and a display signal of information of a method of responding to the information, and a power supply unit. The power supply system according to claim 1 or 2, wherein a display unit that displays the display signal so that the display signal can be read at a glance is provided on an outer surface of a housing that houses the monitoring circuit and the central processing unit. 5. The central processing unit has a function of outputting a plurality of control signals, a display signal of information corresponding to a power state and an alarm, and a display signal of information of a method of responding to the information, A communication unit for transmitting a signal to the outside is provided on the output side of the central processing unit, and a display unit for readablely displaying the display signal transmitted from the communication unit is provided on the driven device side. The power supply system according to claim 1 or 2, characterized in that. 6. When the display command is output from the input unit provided on the driven device side to the central processing unit, a display signal is output from the central processing unit and displayed on the display unit on the driven device side. The power supply system according to claim 5, wherein: 7. When the display signal output from the central processing unit is displayed on the display unit, the time function of the abnormality or power failure is displayed on the display unit by using the clock function of the driven device. The power supply system according to claim 5, wherein the power supply system is a power supply system. 8. A non-volatile memory for storing information on an alarm state is provided, and even when the central processing unit is reset, the previously generated alarm information is read out from the non-volatile memory and is stored before the reset of the central processing unit. The power supply system according to claim 1 or 2, wherein the power supply system has the same alarm state. 9. A non-volatile memory for storing information on an alarm state and a reset switch for accessing a central processing unit from the outside of the power source to release the alarm state are provided. With respect to the alarm state, the central processing unit identifies whether the cause is an internal cause or an external cause, and information about this cause and information about the alarm state are stored in the non-volatile memory to eliminate the cause of the alarm outside the power supply. By operating the reset switch that can be accessed from outside the power supply later, alarm states other than the cause inside the power supply can be released, and the alarm inside the power supply can be released only by a specific person. Claim 1 or 2
Power supply system described.