CN111077469A - Power supply monitoring system - Google Patents
Power supply monitoring system Download PDFInfo
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- CN111077469A CN111077469A CN201911179012.4A CN201911179012A CN111077469A CN 111077469 A CN111077469 A CN 111077469A CN 201911179012 A CN201911179012 A CN 201911179012A CN 111077469 A CN111077469 A CN 111077469A
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- module
- power supply
- monitoring system
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
Abstract
The embodiment of the invention relates to a power supply control system and discloses a power supply monitoring system. In the present invention, a power supply monitoring system includes: the system comprises a plurality of DC/DC power supply modules to be detected and a plurality of inverter modules, wherein each DC/DC power supply module is connected with at least one inverter module; the connecting module is used for connecting each DC/DC power supply module into a power supply end; the main control module is connected with the connecting module and controls each DC/DC power supply module and the connecting module; and the communication module is connected with the main control module and each DC/DC power supply module and is communicated with each inverter module. Compared with the prior art, the system has the advantages that a plurality of power supplies can be monitored simultaneously, manpower and material resources are saved, the labor productivity is improved, the occurrence of safety accidents can be reduced, the safety of testers is ensured, and the test result is real-time and accurate.
Description
Technical Field
The embodiment of the invention relates to a power supply control system, in particular to a power supply monitoring system.
Background
Since the 60's of the last century the advent of DC/DC power supplies, electronic engineers have been constantly striving to reduce the size, power density, and losses of DC/DC power supplies. The detection for measuring the performances of the DC/DC power supply mainly depends on manual measurement, the testing process is excessively complicated, the efficiency is low, and the accuracy of each testing data is poor due to the fact that field conditions are damaged by manual intervention. In addition, the existing power management system has low monitoring efficiency on the power, can only monitor one power, and does not have the function of monitoring multiple devices simultaneously. The DC/DC is mainly used for new energy automobiles, the output voltage and current need to be adjusted in real time according to the requirements of the whole automobile, and the popular power management system software on the market does not have a control function and can only be used for monitoring performance parameters.
Disclosure of Invention
The embodiment of the invention aims to provide a power supply monitoring system, which can monitor a plurality of power supplies simultaneously, save manpower and material resources, improve labor productivity, reduce safety accidents, ensure the safety of testers and ensure real-time and accurate test results.
In order to solve the above technical problem, an embodiment of the present invention provides a power supply monitoring system, including:
the system comprises a plurality of DC/DC power supply modules to be detected and a plurality of inverter modules, wherein the DC/DC power supply modules are at least connected with one inverter module;
the connecting module is used for connecting each DC/DC power supply module into a power supply end;
the main control module is connected with the connecting module and controls the DC/DC power supply modules and the connecting module;
and the communication module is connected with the main control module and each DC/DC power supply module and is communicated with each inverter module.
Compared with the prior art, the DC/DC power supply module to be detected, the inverter module, the main control module, the communication module and the connection module are arranged, one DC/DC power supply module is at least connected with one inverter module, and the connection module enables each DC/DC power supply module to be connected to a power supply end to supply power to each DC/DC power supply module. The main control module is connected with the connecting module, the connecting module can be controlled, the monitoring of the DC/DC power supply module and the connection and disconnection of a power supply end are realized, the communication module is connected with the main control module and the DC/DC power supply module and is communicated with each inverter module, so that the information of the DC/DC power supply module and the information of the inverter module are transmitted to the main control module, the main control module can adjust and control the power supply module by identifying each DC/DC power supply module, the discharge current of the inverter module connected with the DC/DC power supply module is adjusted, the load impedance of the DC/DC power supply to be tested is changed, and the output current and the output voltage of the DC/DC power supply to be tested are adjusted in real time. And the function of simultaneously and automatically monitoring and managing a plurality of DC/DC power supply modules to be detected is realized through the connecting module and the communication module. The problems of complex process, low efficiency and potential safety hazard in manual measurement are solved.
In addition, the communication module includes:
the communication analysis unit is communicated with the main control module;
the first channel is connected with the communication analysis unit and each DC/DC power supply module;
and the plurality of second channels are connected with the communication analysis unit, and each second channel is at least connected with one inverter module.
In addition, the connection module includes:
each branch is uniquely and correspondingly connected with the DC/DC power supply module;
the plurality of switch pieces are uniquely corresponding to the branches; and each switch part connects the DC/DC power supply module on the branch where the switch part is positioned into a power supply end.
In addition, the connection module further includes:
the plurality of protection switches are uniquely corresponding to the branches; and each protection switch is connected with the DC/DC power supply module and the switch part on the branch where the protection switch is positioned.
In addition, the protection switch is an air switch.
In addition, the connection module further includes:
a bus line connected to each of the branches;
and the main switch is arranged on the bus line.
In addition, the main control module comprises:
the terminal display unit is connected with the communication module;
and the control unit is connected with the serial port of the terminal display unit and is connected with the connecting module.
In addition, the terminal display unit is connected with the communication module through a USB.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.
Fig. 1 is an overall block diagram of a monitoring system in a first embodiment of the present invention;
fig. 2 is a circuit topology diagram in the first embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present application in various embodiments of the present invention. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments.
A first embodiment of the present invention relates to a power supply monitoring system, as shown in fig. 1 and 2, including: the device comprises a plurality of DC/DC power supply modules to be detected, a plurality of inverter modules, a main control module, a communication module and a connecting module, wherein one DC/DC power supply module is at least connected with one inverter module, the inverter module is DC/AC, and the DC/DC power supply module is a direct current-to-direct current module. The connecting module is connected with each DC/DC power supply module and connects each DC/DC power supply module into a power supply end. The main control module is connected with the connecting modules to control the connecting modules and realize the monitoring of the DC/DC power supply modules and the connection and disconnection of the power supply ends. The communication module is connected with the main control module and each DC/DC power supply module and is communicated with each inverter module. The communication module transmits information of communication between each DC/DC power supply module and each inverter module to the main control module, and the main control module identifies each DC/DC power supply module, controls each DC/DC power supply module and adjusts the inverter module connected with the DC/DC power supply module. In the present embodiment, fig. 1 illustrates an example in which one DC/DC power supply module is connected to one inverter module.
According to the above, the power supply device is provided with a plurality of DC/DC power supply modules to be detected, a plurality of inverter modules, a main control module, a communication module and a connecting module, wherein one DC/DC power supply module is at least connected with one inverter module, and each DC/DC power supply module is connected to a power supply end through the connecting module to supply power to each DC/DC power supply module. The main control module is connected with the connecting module, the connecting module can be controlled, the monitoring of the DC/DC power supply module and the connection and disconnection of a power supply end are realized, the communication module is connected with the main control module and the DC/DC power supply module and is communicated with each inverter module, so that the information of the DC/DC power supply module and the information of the inverter module are transmitted to the main control module, the main control module can adjust and control the power supply module by identifying each DC/DC power supply module, the discharge current of the inverter module connected with the DC/DC power supply module is adjusted, the load impedance of the DC/DC power supply to be tested is changed, and the output current and the output voltage of the DC/DC power supply to be tested are adjusted in real time. And the function of simultaneously and automatically monitoring and managing a plurality of DC/DC power supply modules to be detected is realized through the connecting module and the communication module. The problems of complex process, low efficiency and potential safety hazard in manual measurement are solved.
Further, as shown in fig. 1, the communication module includes: the communication analysis unit is communicated with the main control module, and the first channel is connected with the communication analysis unit and each DC/DC power supply module. The plurality of second channels are connected with the communication analysis unit, and each second channel is at least connected with one inverter module.
In addition, as shown in fig. 1 and 2, the main control module includes: the terminal display unit is connected with the communication module. The control unit is a programmable controller, is connected with the serial port of the terminal display unit and is connected with the connecting module. The terminal display unit can display functions of an MDI main window, a single-module monitoring interface, a multi-module monitoring interface, an About interface, an inversion setting interface and the like. The user can freely combine the DC/DC power supply modules to be monitored according to own needs, the multi-module monitoring interface can monitor a plurality of DC/DC power supply modules, and normal communication can be still ensured under the condition of high load rate. When the DC/DC power supply module is disconnected from the CAN bus, the control unit clears the module interface data and indicates that the communication connection is disconnected. Optionally, as shown in fig. 1 and 2, the terminal display unit is connected to the communication module USB. In actual use, other connection modes can be selected according to actual conditions.
Specifically, as shown in fig. 1, in the present embodiment, the communication analysis unit is a CAN analysis box, the CAN analysis box is connected to the terminal display unit through a USB, 9 DC/DC power modules are provided, the DC/DC1, DC/DC2, DC/DC3, DC/DC4, DC/DC5, DC/DC6, DC/DC7, DC/DC8, and DC/DC9, the inverter modules are DC/AC modules, the DC/AC modules are also provided with 9, one DC/DC power module is connected to one DC/AC module, three second channels are provided, and three inverter modules are connected to one second channel. The DC/DC power supply modules are connected to the first channel, and the transmission rate is set to be 250 Kbaud rate. The DC/DC power supply module comprises a complete machine and an integrated module, and has the functions of temperature detection, current and voltage sampling, enabling and shutting down, CAN communication and the like. The main control module is connected and communicated with the DC/DC power supply through the CAN analysis box, CAN monitor and store information such as overvoltage, undervoltage, overcurrent and overheat of each DC/DC power supply in real time, has high efficiency, and CAN prepare safety stock according to advance prediction when meeting a capacity peak value. And after the test is finished, sending a control command, and automatically powering off. The device can detect machine faults or poor environment problems, send control commands to the DC/DC power supply module and automatically shut down the tested machine. And the CAN communication selects the frame type as an extension frame, the frame format is a data frame, and the length of the data field is 64 bits. The monitoring of 9 DC/DC power supply modules can be realized by only 8-bit ID, the communication protocol is divided into two categories of query command and configuration command, and the main control module realizes the monitoring and control functions according to the protocol. The communication between the main control module and the DC/AC power supply module changes the discharge current of the power supply to be detected of the designated layer mainly through an instruction that the frame ID is 0x 01010366.
In addition, the inverter modules are DC/AC modules, when the main control module communicates with the DC/AC modules, nodes are increased, the node increase affects line impedance matching, the transmission data volume is large, the channel load rate is high, in order to guarantee safe and reliable system communication in practical use, in the embodiment, 3 paths of CAN channels are selected for 9 inverter modules to communicate with the main control module, the data transmission rate is 125 Kbaud rate, data are transmitted separately and do not interfere with each other, and therefore reliability and safety of the system are improved.
In addition, as shown in fig. 2, the connection module includes: the DC/DC power supply module comprises a plurality of branches and a plurality of switch pieces, wherein each branch is uniquely and correspondingly connected with the DC/DC power supply module. The switch part is uniquely corresponding to each branch, each switch part connects the DC/DC power supply module on the branch where the switch part is located to the power supply end, one branch is provided with one switch part, and the switch part can be a contactor.
Further, as shown in fig. 2, the connection module further includes: the protection switches are uniquely corresponding to the branches; each protection switch is connected with the DC/DC power supply module and the switch piece on the branch where the protection switch is located. Under the condition of overhigh voltage or short circuit on the branch circuit, the protection switch can be disconnected to protect the electrical elements on the branch circuit.
Optionally, the protection switch is an air switch.
In addition, as shown in fig. 2, the connection module further includes: the main switch is arranged on the bus path, and the main switch is a main contactor.
That is, in the present embodiment, as shown in fig. 2, 9 DC/DC power supply modules are provided, and thus 9 branches are provided. Taking a branch as an example, in the branch, the contactor 1 is connected with an air switch K1, an air switch K1 is connected with a power module DC-DC # 1, and the contactor 1 is connected into a bus line and electrically connected with a main contactor. The control unit can control the on-off of the main contactor and the contactors 1 on the branch circuit, so that the power supply module DC-DC # 1 is turned on, and the DC-DC # 1 is correspondingly connected with a plurality of DC 14-AC. The structure of each branch is the same, and is not described one by one.
In addition, each branch can be connected with an indicator light, when the branch works, the indicator light is on, the branch is segmented and the indicator light is off.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.
Claims (8)
1. A power monitoring system, comprising:
the system comprises a plurality of DC/DC power supply modules to be detected and a plurality of inverter modules, wherein each DC/DC power supply module is connected with at least one inverter module;
the connecting module is used for connecting each DC/DC power supply module into a power supply end;
the main control module is connected with the connecting module and controls the DC/DC power supply modules and the connecting module;
and the communication module is connected with the main control module and each DC/DC power supply module and is communicated with each inverter module.
2. The power monitoring system of claim 1, wherein the communication module comprises:
the communication analysis unit is communicated with the main control module;
the first channel is connected with the communication analysis unit and each DC/DC power supply module;
and the plurality of second channels are connected with the communication analysis unit, and each second channel is at least connected with one inverter module.
3. The power monitoring system of claim 2, wherein the connection module comprises:
each branch is uniquely and correspondingly connected with the DC/DC power supply module;
the plurality of switch pieces are uniquely corresponding to the branches; and each switch part connects the DC/DC power supply module on the branch where the switch part is positioned into a power supply end.
4. The power monitoring system of claim 3, wherein the connection module further comprises:
the plurality of protection switches are uniquely corresponding to the branches; and each protection switch is connected with the DC/DC power supply module and the switch part on the branch where the protection switch is positioned.
5. The power monitoring system of claim 4, wherein the protection switch is an air switch.
6. The power monitoring system of claim 4, wherein the connection module further comprises:
a bus line connected to each of the branches;
and the main switch is arranged on the bus line.
7. The power monitoring system of claim 1, wherein the master control module comprises:
the terminal display unit is connected with the communication module;
and the control unit is connected with the serial port of the terminal display unit and is connected with the connecting module.
8. The power monitoring system of claim 7, wherein the terminal display unit is USB connected to the communication module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911179012.4A CN111077469B (en) | 2019-11-27 | 2019-11-27 | Power supply monitoring system |
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| CN201911179012.4A CN111077469B (en) | 2019-11-27 | 2019-11-27 | Power supply monitoring system |
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| CN111077469B CN111077469B (en) | 2023-02-10 |
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