CN109470965B - Independent feedback monitoring system - Google Patents
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- CN109470965B CN109470965B CN201910035288.9A CN201910035288A CN109470965B CN 109470965 B CN109470965 B CN 109470965B CN 201910035288 A CN201910035288 A CN 201910035288A CN 109470965 B CN109470965 B CN 109470965B
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- 239000003990 capacitor Substances 0.000 claims abstract description 118
- 238000007599 discharging Methods 0.000 claims abstract description 40
- 238000004891 communication Methods 0.000 claims abstract description 24
- 238000005070 sampling Methods 0.000 claims description 36
- 230000010365 information processing Effects 0.000 claims description 16
- 238000004146 energy storage Methods 0.000 claims description 8
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- G—PHYSICS
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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Abstract
The invention discloses an independent feedback monitoring system, which comprises an input module, an output module, a metering monitoring module, a charging management module, a discharging management module, a super capacitor rapid discharging module, a communication module, a control interface module, a control module, a power supply module, a super capacitor, a diode D11, a diode D12 and a discharging resistor R11, wherein the input module is connected with the output module; the independent feedback monitoring system provided by the invention has the advantages of simple design, strong compatibility and lower cost.
Description
Technical Field
The present invention relates to the field of electronics, and more particularly, to a self-contained feedback monitoring system.
Background
The control of the domestic and foreign electrical equipment has the characteristic of intellectualization. One of the important features is the need for remote monitoring.
Because of the very many kinds of technologies, such as power line carrier, ad hoc network short-distance wireless control, loRa, zigbee, etc., the development level of enterprises is different, and a large number of technologies coexist in many applications.
For example, in the case of intelligent traffic light applications, different kinds of intelligent traffic light products may be used in the same urban area, however, different kinds of intelligent traffic light products may be different, or compatibility at the platform level may be very costly. Once a problem or damage occurs to these products, it is difficult to learn about the exact condition at the first time, thereby informing the corresponding company of maintenance. Therefore, independent monitoring equipment is urgently needed to feed back corresponding information in the market, the price cost is low, and the universality is strong.
It is necessary to develop a monitoring device which is independent of other intelligent systems, has low cost, is easy to install and has strong compatibility. In addition to this application, there are a number of similar applications for intelligent street lamps, intelligent inspection covers, etc. that are in reality problematic.
Disclosure of Invention
The invention overcomes the defects of the prior art and provides the independent feedback monitoring system which has simple design, strong compatibility and lower cost.
The technical scheme of the invention is as follows:
the independent feedback monitoring system comprises an input module, an output module, a metering monitoring module, a charging management module, a discharging management module, a super capacitor rapid discharging module, a communication module, a control interface module, a control module, a power module, a super capacitor, a diode D11, a diode D12 and a discharging resistor R11;
the input module is connected with the metering monitoring module, the metering monitoring module comprises a current sampling module, a voltage sampling module and an information processing module, the input end of the current sampling module is connected with the live wire of the input module, the two input ends of the voltage sampling module are connected with the live wire and the zero wire of the input module, the output end of the current sampling module is connected with the input end of the information processing module and one end of the control switch K11, the output end of the voltage sampling module is connected with the input end of the information processing module, and the output end of the information processing module is connected with the control module; the fire wire of the output module is connected with the other end of the control switch K11, and the third port of the control switch K11 is connected with the control module. The zero line of the input module is connected with the zero line of the output module;
the power module is connected with the input module, the metering monitoring module, the control module and the power failure reporting module; the power failure reporting module comprises a charging module, a discharging module, a super capacitor management module, a diode and a load resistor R11; the diode comprises a first diode D11 and a second diode D12; the charging module is connected with two ends of the super capacitor and is connected with the super capacitor management module of the discharging module, and the super capacitor management module is connected with the load resistor; the junction of the charging module and the power supply module is connected with the anode of a second diode D12, the cathode of the second diode D12 is connected with the cathode of a first diode D11, the control circuit and the communication circuit, the anode of the second diode is connected with the discharging module, and the discharging module is connected with a capacitor C12.
Further, the input module is used for connecting a power supply and accessing the commercial power;
the output module is used for connecting a load, namely connecting various devices needing to be monitored and controlled;
the control interface module outputs digital signals or analog signals to the outside;
the communication module is used for signal transmission and wireless signal transmission through the antenna;
the charging management circuit module is used for charging the super capacitor;
the discharge management circuit module is used for super capacitor discharge management;
the super capacitor rapid discharging module is used for rapidly releasing the energy of the super capacitor;
the metering monitoring module is used for collecting mains supply information and obtaining information of voltage, current, power factor and electricity consumption through processing; the current sampling module in the metering monitoring module is connected in series with the L line of the output module, the voltage sampling module is connected in parallel with the L line and the N line of the input module, and the signal processing module and the control module are connected for information exchange;
the power supply module adopts an AC/DC power supply module, is used for supplying power to the metering monitoring module, the control module and the communication module when the device works normally under the commercial power, and charges the super capacitor through the charging management circuit;
the super capacitor C11 is used for energy storage;
the diode D11 and the diode D12 are used for isolating the output voltages of the power supply module and the discharge management module;
the control module is connected with the metering monitoring module, the communication module, the control interface module and the super capacitor rapid discharging module.
Compared with the traditional mode, the invention adopts a simple circuit structure, has wide applicability and low cost of the independent feedback monitoring system with strong compatibility, and is easy to popularize and use.
Drawings
FIG. 1 is a schematic circuit diagram of the device of the present invention;
FIG. 2 is a circuit diagram of a charge management module according to the present invention;
FIG. 3 is a circuit diagram of another charge management module according to the present invention;
FIG. 4 is a circuit diagram of a discharge management module according to the present invention;
FIG. 5 is a circuit diagram of the present invention for rapid discharge of a supercapacitor;
FIG. 6 is a strategy flow chart for rapid discharge of the super capacitor of the present invention;
FIG. 7 is a flow chart of another strategy for rapid discharge of a supercapacitor according to the present invention;
FIG. 8 is a specific circuit diagram of a control interface circuit module of the present invention;
FIG. 9 is a power control flow chart of the present invention;
FIG. 10 is a graph of three dimming curves in common;
FIG. 11 is a flow chart of the ID number writing method of the present invention;
FIG. 12 is a flow chart of a method for generating pseudo-random numbers by the device of the present invention;
FIG. 13 is a flow chart of the generation of random numbers by the server of the present invention;
FIG. 14 is a circuit diagram of the RC circuit random number generation method of the present invention;
FIG. 15 is a circuit diagram of a voltage random number generation method according to the present invention;
fig. 16 is a circuit diagram of the current random number generation method of the present invention.
Detailed Description
The invention is further described below with reference to the drawings and the detailed description. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1:
as shown in fig. 1, the independent feedback monitoring device comprises an input module, an output module, a metering monitoring module, a charging management module, a discharging management module, a super capacitor rapid discharging module, a communication module, a control interface module, a control module, a power supply module, a super capacitor, a diode D11, a diode D12 and a discharging resistor R11.
The input module is used for connecting a power supply and accessing the commercial power.
The output module is used for connecting loads, namely various devices needing to be monitored and controlled.
The control interface module outputs digital signals or analog signals, such as 0-10V signals, PWM signals, etc.
The communication module is used for signal transmission and performs wireless signal transmission through the antenna.
The charging management circuit module is used for charging the super capacitor.
The discharge management circuit module is used for super capacitor discharge management.
The super capacitor rapid discharging module is used for rapidly releasing the energy of the super capacitor.
The metering monitoring module is used for collecting mains supply information and obtaining information such as voltage, current, power factor, electricity consumption and the like through processing. The current sampling module in the metering monitoring module is connected in series with the L line of the output module, the voltage sampling module is connected in parallel with the L line and the N line of the input module, and the signal processing module and the control module are connected for information exchange.
The power module adopts an AC/DC power module, is used for supplying power to the metering monitoring module, the control module and the communication module when the device works normally under the commercial power, and charges the super capacitor through the charging management circuit.
The super capacitor C11 is used for energy storage and has longer service life compared with other energy storage devices.
The diode D11 and the diode D12 are used to isolate the output voltages of the power supply module and the discharge management module.
The control module is connected with the metering monitoring module, the communication module, the control interface module and the super capacitor rapid discharging module.
The input module is connected with the metering monitoring module, the metering monitoring module comprises a current sampling module, a voltage sampling module and an information processing module, the input end of the current sampling module is connected with the live wire of the input module, the two input ends of the voltage sampling module are connected with the live wire and the zero wire of the input module, the output end of the current sampling module is connected with the input end of the information processing module and one end of the control switch K11, the output end of the voltage sampling module is connected with the input end of the information processing module, and the output end of the information processing module is connected with the control module; the fire wire of the output module is connected with the other end of the control switch K11, and the third port of the control switch K11 is connected with the control module. The zero line of the input module is connected with the zero line of the output module.
The power module is connected with the input module, the metering monitoring module, the control module and the power failure reporting module. The power failure reporting module comprises a charging module, a discharging module, a super capacitor management module, a diode and a load resistor R11. The diode includes a first diode D11 and a second diode D12. The charging module is connected with two ends of the super capacitor and is connected with the super capacitor management module of the discharging module, and the super capacitor management module is connected with the load resistor. The junction of the charging module and the power supply module is connected with the anode of a second diode D12, the cathode of the second diode D12 is connected with the cathode of a first diode D11, the control circuit and the communication circuit, the anode of the second diode is connected with the discharging module, and the discharging module is connected with a capacitor C12. The super capacitor is used for energy storage because the service life of the super capacitor is longer than that of other components. The load resistor R11 is used for rapid discharge during discharge, and is mainly convenient for rapidly monitoring whether the equipment is qualified after production.
Example 2:
as shown in fig. 1 to 16, the independent feedback monitoring device includes an input module, an output module, a metering monitoring module, a charging management module, a discharging management module, a super capacitor rapid discharging module, a communication module, a control interface module, a control module, a power module, a super capacitor, a diode D11, a diode D12, and a discharging resistor R11.
The input module is used for connecting a power supply and accessing the commercial power.
The output module is used for connecting loads, namely various devices needing to be monitored and controlled.
The control interface module outputs digital signals or analog signals, such as 0-10V signals, PWM signals, etc.
The communication module is used for signal transmission and performs wireless signal transmission through the antenna.
The charging management circuit module is used for charging the super capacitor.
The discharge management circuit module is used for super capacitor discharge management.
The super capacitor rapid discharging module is used for rapidly releasing the energy of the super capacitor.
The metering monitoring module is used for collecting mains supply information and obtaining information such as voltage, current, power factor, electricity consumption and the like through processing. The current sampling module in the metering monitoring module is connected in series with the L line of the output module, the voltage sampling module is connected in parallel with the L line and the N line of the input module, and the signal processing module and the control module are connected for information exchange.
The power module adopts an AC/DC power module, is used for supplying power to the metering monitoring module, the control module and the communication module when the device works normally under the commercial power, and charges the super capacitor through the charging management circuit.
The super capacitor C11 is used for energy storage and has longer service life compared with other energy storage devices.
The diode D11 and the diode D12 are used to isolate the output voltages of the power supply module and the discharge management module.
The control module is connected with the metering monitoring module, the communication module, the control interface module and the super capacitor rapid discharging module.
The input module is connected with the metering monitoring module, the metering monitoring module comprises a current sampling module, a voltage sampling module and an information processing module, the input end of the current sampling module is connected with the live wire of the input module, the two input ends of the voltage sampling module are connected with the live wire and the zero wire of the input module, the output end of the current sampling module is connected with the input end of the information processing module and one end of the control switch K11, the output end of the voltage sampling module is connected with the input end of the information processing module, and the output end of the information processing module is connected with the control module; the fire wire of the output module is connected with the other end of the control switch K11, and the third port of the control switch K11 is connected with the control module. The zero line of the input module is connected with the zero line of the output module.
The power module is connected with the input module, the metering monitoring module, the control module and the power failure reporting module. The power failure reporting module comprises a charging module, a discharging module, a super capacitor management module, a diode and a load resistor R11. The diode includes a first diode D11 and a second diode D12. The charging module is connected with two ends of the super capacitor and is connected with the super capacitor management module of the discharging module, and the super capacitor management module is connected with the load resistor. The junction of the charging module and the power supply module is connected with the anode of a second diode D12, the cathode of the second diode D12 is connected with the cathode of a first diode D11, the control circuit and the communication circuit, the anode of the second diode is connected with the discharging module, and the discharging module is connected with a capacitor C12. The super capacitor is used for energy storage because the service life of the super capacitor is longer than that of other components. The load resistor R11 is used for rapid discharge during discharge, and is mainly convenient for rapidly monitoring whether the equipment is qualified after production.
As shown in fig. 2, the charge management circuit of the standalone feedback monitoring device. The V2in & lt+ & gt and V2in & lt- & gt are connected with the positive electrode and the negative electrode of the output end of the power supply module, and the V2out & lt+ & gt and V2out & lt- & gt are connected with the positive electrode and the negative electrode of the super capacitor.
The device also comprises a singlechip processor U21, a capacitor C22, a capacitor C23, an inductor L21, an inductor L22, a diode D21, a switch Q21, a resistor R22, a resistor R23 and a current limiting resistor R21. Two ends of the capacitor C21 are used as input ends, and one end of the capacitor C21 is connected with the anode of the input end, one end of the inductor L21 and one end of the singlechip processor U21; the other end of the inductor L21 is connected with one end of the switch Q21 and one end of the capacitor C22; the other end of the capacitor C22 is connected with one end of the inductor L22 and the anode of the diode D21; the cathode of the diode D21 is connected with one end of the current limiting resistor R21, one end of the capacitor C23 and one end of the resistor R22; the other end of the resistor R22 is connected with one end of the singlechip processor U21 and one end of the resistor R23; the other end of the capacitor C21 is connected to the cathode of the input terminal, the other end of the switch Q21, the other end of the inductor L22, and the other end of the capacitor C23, and serves as the cathode of the output terminal. The other end of the current limiting resistor R21 is used as an anode of the output.
The resistor R21 serves to avoid damaging the diode D21 by excessive current flow when charging the supercapacitor. Playing a role of current limiting.
As shown in fig. 3, another circuit for charge management adopts a control mode of current feedback and voltage feedback. Which can be interchanged with the scheme of fig. 2.
The device specifically comprises a feedback control module of a charging module, a capacitor C31, a capacitor C32, a capacitor C33, an inductor L31, an inductor L32, a diode D31, a switch Q31 and a sampling resistor R31. Two ends of the capacitor C31 are used as input ends, and one end of the capacitor C31 is connected with the positive electrode of the input end, one end of the inductor L31 and one end of the feedback control module; the other end of the inductor L31 is connected with one end of the switch Q31 and one end of the capacitor C32; the other end of the capacitor C32 is connected with one end of the inductor L32 and the anode of the diode D31; the cathode of the diode D31 is connected with one end of the capacitor C33 and one end of the resistor R32; the other end of the resistor R32 is connected with the feedback control module and one end of the resistor R33; the other end of the capacitor C31 is connected with the cathode of the input end, the other end of the switch Q31, the other end of the inductor L32, the other end of the capacitor C33 and one end of the sampling resistor R31, and the other end of the sampling resistor R31 and one end of the feedback control module are taken as the cathode of the output end. One end of the capacitor C33 serves as the anode of the output.
The feedback control module consists of a singlechip processor, two operational amplifiers, 11 resistors, two capacitors, two diodes and a photoelectric coupler. The single chip microcomputer processor U31, the operational amplifier U32 and the operational amplifier U33; the 11 resistors are respectively a resistor R32, a resistor R33, a resistor R34, a resistor R35, a resistor R36, a resistor R37, a resistor R38, a resistor R39, a resistor R310, a resistor R311 and a resistor R312; the two capacitors comprise a capacitor C34 and a capacitor C35; the two diodes are respectively diode D32 and diode D33.
The singlechip processor U31 is connected with one end of a resistor R312, a photoelectric coupler, one end of a resistor R310, one end of a resistor R311, one end of a resistor R36 and one end of a resistor R37; the other end of the resistor R312 is connected with a photoelectric coupler, and one end of the photoelectric coupler is connected with the anode of the diode D32 and the anode of the diode D33; the cathode of the diode D32 is connected with one end of the capacitor C34 and the operational amplifier U32; the other end of the capacitor C34 is connected with one end of the resistor R35; the other end of the resistor R35 is connected with one end of the resistor R34 and the operational amplifier U32, and the other end of the resistor R34 is connected with the other end of the resistor R32 and one end of the resistor R33; one end of the operational amplifier U32 is connected to the other end of the resistor R36. The cathode of the diode D33 is connected with one end of the capacitor C35 and the operational amplifier U33; the other end of the capacitor C35 is connected with one end of the resistor R39; the other end of the resistor R39 is connected with one end of the resistor R38 and the operational amplifier U33, and the other end of the resistor R38 is connected with one end of the resistor R31; one end of the operational amplifier U33 is connected with the other end of the resistor R310, and the other end of the resistor R311 is grounded.
Fig. 4 is a diagram of a discharge management circuit, and the main function of the circuit is to enable the super capacitor to supply power to the control module and the communication module when the commercial power is cut off, so that the module reports the abnormal information of the commercial power to the server. The voltage of the super capacitor can be gradually reduced when the super capacitor releases energy, and the special discharge management circuit ensures the stability of the power supply voltage for the control module and the communication module when the voltage of the super capacitor is gradually reduced.
V4in+ and V4 in-of the circuit are connected with the anode and the cathode of the super capacitor. V4out+ is connected to the anode of the isolation diode D11. V4 out-is connected to the ground of the control module and the communication module.
The device comprises a singlechip processor U41, a capacitor C42, a capacitor C43, an inductor L41, an inductor L42, a diode D41, a switch Q41, a resistor R41 and a resistor R42. Two ends of the capacitor C41 are used as input ends, and one end of the capacitor C41 is connected with the anode of the input end, one end of the inductor L41 and one end of the singlechip processor U41; the other end of the inductor L41 is connected with one end of the switch Q41 and one end of the capacitor C42; the other end of the capacitor C42 is connected with one end of the inductor L42 and the anode of the diode D41; the cathode of the diode D41 is connected with one end of the current limiting resistor R41 and one end of the capacitor C43; the other end of the resistor R41 is connected with one end of the singlechip processor U41 and one end of the resistor R42; the other end of the capacitor C41 is connected to the cathode of the input terminal, the other end of the switch Q41, the other end of the inductor L42, and the other end of the capacitor C43, and serves as the cathode of the output terminal. The cathode of diode D41 serves as the anode of the output.
Fig. 5 shows a super capacitor quick discharge circuit, which aims to quickly release the electric quantity of the super capacitor during the process upgrading or production maintenance of the device. The device specifically further comprises a super capacitor C11, a load resistor R11 and a switch Q51 (adopting a relay, an MOS tube or a triode and the like); when the singlechip processor U51 receives a command for discharging, the Q51 is controlled to be closed, and the super capacitor releases energy through the load resistor R11. In FIG. 5, V5in+ and V5 in-are connected to the positive and negative electrodes of the supercapacitor C11, and V5out+ and V5 out-are connected to the two ends of the load resistor R11.
The specific implementation method of the rapid discharge of the super capacitor comprises the following steps: the specific operation flow is shown in fig. 6, the circuits are the control module, the control interface module, the circuit in fig. 5 and the circuit in fig. 8 in fig. 1, when the output end of the control interface module in fig. 1 is short-circuited, the single-chip processor U81 detects the short-circuited state of the interface circuit and feeds back the information to the control circuit module, and the single-chip processor U51 at this time receives the information and starts to execute the discharge instruction.
Another specific implementation method for rapid discharge of the super capacitor is as follows: and the self-made equipment is used for carrying out discharge control in a mode of periodically powering on and powering off the device. The control flow is as shown in fig. 7, and the circuit is the input module, the power module, the control circuit module (including timer and counter) and the circuit in fig. 5in fig. 1. When the device is produced, maintained and maintained, the input end of the device is connected with a periodical (for example, power-on 5S and power-off 5S) power supply (adopting direct current low voltage), and the control module detects a voltage signal of the AC/DC module. The timer in the control circuit module is used for respectively counting the power-on time and the power-off time and judging whether the external signal is normal or not, when the value of the timer reaches a set value (which can be set to 10 times), the timer is triggered to count the power-on and power-off times, when the count value reaches the set value, the discharge instruction is judged to be required to be executed, and at the moment, the singlechip processor U51 turns off the switch Q51 to start to rapidly discharge the super capacitor.
Fig. 8 is a specific circuit diagram of the control interface module, and the function is mainly aimed at devices such as an LED control device and an electronic ballast with a dimming mode for the load device. The output of which may produce two signals, one being an analog signal 0-10V and one being a digital signal PWM. The device judges the dimming mode of the load equipment to select the matched control signal. The triode Q81 is used for controlling the output of the digital signal PWM wave, and the triode Q82 is used for controlling the output of the analog signal 0-10V. The operational amplifier U82 is used for amplifying signals, and the operational amplifier U83 is used for buffering signals.
The circuit comprises nine resistors, a capacitor, two triodes, a singlechip processor and two operational amplifiers; three pins of the singlechip processor U81 are respectively connected with one end of a resistor R81, one end of a resistor R82, one end of a resistor R83 and one end of a resistor R84, and the resistor R83 and the resistor R82 are connected with the same pin; the other end of the resistor R81 and the other end of the resistor R82 are respectively connected with the base electrode and the emitter electrode of the triode Q81; the other end of the resistor R83 is connected with one end of the capacitor C81 and the emitter of the triode Q82, and one end of the resistor R84 is connected with the base of the triode Q82; the collector of the triode Q81 and the collector of the triode Q82 are connected with one end of a resistor R85, and the other end of the resistor R85 is connected with the positive electrode pin of the operational amplifier U82; the negative electrode pin of the operational amplifier U82 is connected with one end of a resistor R86 and one end of a resistor R87; the other end of the resistor R87 is connected with one pin of the operational amplifier U82 and the positive pin of the operational amplifier U83; the negative pin of the operational amplifier U83 is connected with the output pin of the operational amplifier U82, one end of the resistor R88 and one end of the resistor R89; the other end of the resistor R88 and the other end of the resistor R89 are respectively used as connection points of external interfaces.
A power control flow diagram is shown in fig. 9. The function is mainly aimed at devices requiring power regulation, such as an LED control device with a dimming mode, an electronic ballast and the like, of load devices.
The current power adjustment modes of the LED control device/electronic ballast in the market mainly comprise three modes of 0-10V and 1-10V, PWM. The LED control device/electronic ballast dimming interface is externally connected with a device with a dimming signal to adjust the output current of the device so as to realize power adjustment. For example, there are three dimming modes of the LED control devices installed on the same road, and three dimming curves are shown in fig. 10, so that when a conventional street lamp controller is used to execute a unified dimming command, problems such as large deviation of power of each lamp and uneven illumination of the road occur.
The circuit comprises a control interface module, a control module and a metering monitoring module in fig. 1, wherein the control interface module is connected with a power regulating interface circuit of load equipment. When the device receives a power adjustment instruction (the power adjustment instruction comprises a power value needing to operate a load), the metering monitoring module detects the power, the detected actual power value of the load equipment is sent to the control circuit, the control circuit compares the detected value with a target value, and when the detected value is equal to the target value, the power value is directly written into the memory without performing power adjustment action. When the detected value is not equal to the target value, the control circuit controls the interface circuit to adjust the power of the load device by changing the voltage of 0-10V or PWM until the power reaches the target value, and the final power value is written into the memory.
The random number generation mechanism, such as NB-loT, is the fastest-growing transmission mode of the Internet of things, supports large-area application, but does not support application scenes with high real-time performance or simultaneously online application scenes, if a large number of devices of NB-loT send data to a server at the same time, server blocking is caused, network blocking is caused, even the devices may be blacklisted, instability of the whole system is caused, erroneous judgment and abnormal judgment are caused, and the like. How to solve the problem of concurrency, in most common application scenarios, in order to reduce power consumption of devices, the devices of NB-loT are generally used to actively send information to a server, but it is difficult to coordinate and control the NB-loT devices to send information. For example, in the same lan, there are many NB-loT devices (for example, a stand-alone feedback monitoring device), if the lan is powered off, the NB-loT devices will be detected almost at the same time, and all the NB-loT devices will go up, so that the problem of blocking will occur with a high probability, and the number of retransmissions will increase, and the blocking of the network device will cause misjudgment of the device, and will be considered as a blacklist.
By adopting a random number mechanism, when each NB-loT device reports the server to the same event, a random delay is generated through the random number of the NB-loT device, and the concurrent number under the same event at the same time is reduced by adopting the method. Specific methods of how to generate random numbers include a method of writing an ID number, a method of generating a pseudo-random number by a device, a method of generating a random number by a server, and a circuit random number generation method. As particularly shown in fig. 11-16.
The ID number writing method is specifically as follows: according to the ID coding method, unique ID numbers are written for various products in different batches. The control circuit of fig. 1 further includes a memory module, in which a unique ID number is written for each device at the time of production of the device, and stored. The writing step is shown in fig. 11, and the writing is stopped only when the writing is successful, otherwise, the corresponding unsuccessful information is consistently prompted.
The device generates a pseudo-random number method specifically as follows: before leaving the factory, each device stores a pseudo-random number, namely a fixed random number generated by a computer before leaving the factory, and the random number has no relation with the ID number and is also stored in a storage module.
The method for generating the random number by the server is specifically as follows: the server distributes the random numbers according to the area of the equipment, and stores the information in the storage module.
The circuit random number generation method comprises an RC circuit random number generation method, a voltage random number generation method and a current collection random number generation method.
The RC circuit random number generation method is specifically as follows. As shown in fig. 14, the control circuit is connected to the memory circuit, the resistor R141, and the capacitor C141. Since the resistance value and the capacitance value are subjected to normal distribution, the voltage on the capacitance in the RC circuit of different devices has discreteness.
When a voltage of 3.3V is applied to the R141 and C141 circuits, the control circuit starts sampling the voltage on the capacitor C141 and counts in milliseconds, and when the voltage on the capacitor C141 reaches the set voltage of 2.5V, the control circuit expands the time required for reaching the voltage of 2.5V by a factor of hundred or thousand times as a final random number to be stored in the memory circuit.
A voltage random number generation method. The specific circuit is shown in fig. 15, wherein 3.3V or 5V is added to the voltage dividing circuit composed of the resistor R141 and the resistor R152, and the voltage on the resistor R152 has the discreteness due to the discreteness of the resistance value and the discreteness of the applied voltage. The control circuit collects the discrete voltage data formed by the resistor R151 and the resistor R152, expands the discrete voltage data by hundred times or thousand times, and stores the discrete voltage data into the storage circuit as random numbers.
The current random number generation method is shown in fig. 16, and the circuit mainly comprises an input circuit, an output circuit, a metering monitoring circuit, a control circuit and a storage circuit. Due to the discreteness of the mains voltage and the differences in the loads carried by the respective devices, the discreteness of the mains current on each device is great. The utility current value on each device is measured by the metering monitoring module and transmitted to the control circuit, which multiplies the current value by a coefficient and stores the current value as a random number in the storage circuit.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the concept of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.
Claims (1)
1. The independent feedback monitoring system is characterized in that: the device comprises an input module, an output module, a metering monitoring module, a charging management module, a discharging management module, a super capacitor rapid discharging module, a communication module, a control interface module, a control module, a power module, a super capacitor, a diode D11, a diode D12 and a discharging resistor R11;
the input module is connected with the metering monitoring module, the metering monitoring module comprises a current sampling module, a voltage sampling module and an information processing module, the input end of the current sampling module is connected with the live wire of the input module, the two input ends of the voltage sampling module are connected with the live wire and the zero wire of the input module, the output end of the current sampling module is connected with the input end of the information processing module and one end of the control switch K11, the output end of the voltage sampling module is connected with the input end of the information processing module, and the output end of the information processing module is connected with the control module; the fire wire of the output module is connected with the other end of the control switch K11, and a third port of the control switch K11 is connected with the control module; the zero line of the input module is connected with the zero line of the output module;
the power module is connected with the input module, the metering monitoring module, the control module and the power failure reporting module; the power failure reporting module comprises a charging module, a discharging module, a super capacitor management module, a diode and a load resistor R11; the diode comprises a first diode D11 and a second diode D12; the charging module is connected with two ends of the super capacitor and is connected with the super capacitor management module of the discharging module, and the super capacitor management module is connected with the load resistor; the connection part of the charging module and the power supply module is connected with the anode of a second diode D12, the cathode of the second diode D12 is connected with the cathode of the first diode D11, the control circuit and the communication circuit, the anode of the second diode is connected with the discharging module, and the discharging module is connected with a capacitor C12;
the input module is used for connecting a power supply and accessing the commercial power;
the output module is used for connecting a load, namely connecting various devices needing to be monitored and controlled;
the control interface module outputs digital signals or analog signals to the outside;
the communication module is used for signal transmission and wireless signal transmission through the antenna;
the charging management circuit module is used for charging the super capacitor;
the discharge management circuit module is used for super capacitor discharge management;
the super capacitor rapid discharging module is used for rapidly releasing the energy of the super capacitor;
the metering monitoring module is used for collecting mains supply information and obtaining information of voltage, current, power factor and electricity consumption through processing; the current sampling module in the metering monitoring module is connected in series with the L line of the output module, the voltage sampling module is connected in parallel with the L line and the N line of the input module, and the signal processing module and the control module are connected for information exchange;
the power supply module adopts an AC/DC power supply module, is used for supplying power to the metering monitoring module, the control module and the communication module when the device works normally under the commercial power, and charges the super capacitor through the charging management circuit;
the super capacitor C11 is used for energy storage;
the diode D11 and the diode D12 are used for isolating the output voltages of the power supply module and the discharge management module;
the control module is connected with the metering monitoring module, the communication module, the control interface module and the super capacitor rapid discharging module.
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