CN103048946A - Power supply monitoring module communicated based on RS485 - Google Patents
Power supply monitoring module communicated based on RS485 Download PDFInfo
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- CN103048946A CN103048946A CN2012105541480A CN201210554148A CN103048946A CN 103048946 A CN103048946 A CN 103048946A CN 2012105541480 A CN2012105541480 A CN 2012105541480A CN 201210554148 A CN201210554148 A CN 201210554148A CN 103048946 A CN103048946 A CN 103048946A
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Abstract
The invention relates to a power supply monitoring module communicated based on RS485, comprising a main control chip which is used for collecting operation information of a power supply to be monitored, wherein an input and output end of the main control chip is connected with an input and output end of an RS485 communication chip, the input and output end of the RS485 communication chip is connected with the input and output end of an upper computer, and a DC-DC power supply module is used for supplying power for the RS485 communication chip. According to the invention, the operating state information of the power supply to be monitored is collected by the main control chip and comprises voltage, current and the like, and the working stage information is transmitted to the upper computer in real time through the RS485 communication chip; and when the power supply to be monitored has fault, a maintainer can check out fault information and a fault point on the upper computer, an exact breakthrough point exists during overhauling, the fault point can be found out without starting the power supply, and the maintenance is convenient.
Description
Technical field
The present invention relates to the Power Supply Monitoring field, especially a kind of Power Monitoring Unit based on the RS485 communication.
Background technology
At present, if the power supply of radar fan inside breaks down, power supply need to be taken apart, check the circuit of power supply inside, the trouble shooting point, maintenance is difficulty comparatively, can't the self-verifying trouble spot and report host computer, host computer does not receive failure message yet, in time the trouble spot is controlled.In addition, in the environment such as Industry Control, often have electrical noise and disturb transmission line, when using the RS-232 communication often the electrical Interference because of the external world cause signal transmission errors; In addition, the maximum transmission distance of RS-232 communication in the situation that does not increase impact damper only to reach 15 meters.
Summary of the invention
The object of the present invention is to provide and a kind ofly power information can be passed to host computer, be convenient to the Power Monitoring Unit based on the RS485 communication that host computer is monitored, is convenient to keep in repair power supply in real time.
For achieving the above object, the utility model has adopted following technical scheme: a kind of Power Monitoring Unit based on the RS485 communication, comprise be used to the main control chip that gathers power work information to be monitored, the input/output terminal of main control chip links to each other with the input/output terminal of RS485 communication chip, the input/output terminal of RS485 communication chip links to each other with the input/output terminal of host computer, and the DC-DC power module is powered to the RS485 communication chip.
Described main control chip adopts PSoC embedded system wafer, and its input/output terminal links to each other with power supply to be monitored, RS485 communication chip respectively.
Described DC-DC power module adopts the EC1SA01N chip, flying capcitor C802, C811 on its 1st, 2 pin, and the end of capacitor C 802, C811 and joining power VCC1, the other end of capacitor C 802, C811 is GND1 altogether; Flying capcitor C812, C803 on its 4th, 6 pin, the end of capacitor C 812, C803 and joining power VCC2, the other end of capacitor C 812, C803 is GND2 altogether.
Described RS485 communication chip adopts the ADM2486 chip, its the 1st, 7 pin meets power supply VCC1, its the 3rd pin connects the RXD pin of PSoC embedded system wafer, its the 6th pin connects the TXD pin of PSoC embedded system wafer, its the 4th, 5 pin connects the EN pin of PSoC embedded system wafer, and its 2nd, 8 pin meets GND1, and the 9th, 15 pins meet GND2, its the 16th pin meets power supply VCC2, its 12nd, 13 pin and upper machine communication.
The 1st pin of described ADM2486 chip is by capacitor C 828 ground connection GND1, its the 16th pin respectively with resistance R 809, capacitor C 807 links to each other, and by electric capacity R807 ground connection GND2, resistance R 809 and resistance R 811 are given the 12nd pin of ADM2486 after with the VCC2 dividing potential drop, resistance R 843 is connected across the 12nd of ADM2486 chip, on 13 pins, resistance R 811 is by capacitor C 809 ground connection GND2, resistance R 843 is by capacitor C 808 ground connection GND2, the two ends of resistance R 843 also respectively with resistance R 812, the end of R813 links to each other, the other end of resistance R 812 is managed respectively the negative electrode of V803 with TVS, the negative electrode of V801, host computer links to each other, the plus earth GND2 of TVS pipe V803, the other end of resistance R 813 is managed respectively the negative electrode of V802 with TVS, the anode of V801, host computer links to each other, the plus earth GND2 of TVS pipe V802.
As shown from the above technical solution, the present invention removes to gather the work state information of power supply to be monitored by main control chip, comprise voltage, electric current etc., and its work state information is sent to host computer in real time by the RS485 communication chip, when power supply to be monitored broke down, the maintenance personal just can view failure message and trouble spot on host computer, and definite point of penetration is arranged when maintenance, need not to investigate the trouble spot after the opening power, be convenient to maintenance.
Description of drawings
Fig. 1 is circuit block diagram of the present invention;
Fig. 2 is circuit theory diagrams of the present invention.
Embodiment
A kind of Power Monitoring Unit based on the RS485 communication, comprise be used to the main control chip 1 that gathers power work information to be monitored, the input/output terminal of main control chip 1 links to each other with the input/output terminal of RS485 communication chip 2, the input/output terminal of RS485 communication chip 2 links to each other with the input/output terminal of host computer, DC-DC power module 3 is to 2 power supplies of RS485 communication chip, as shown in Figure 1.
As shown in Figure 2, described main control chip 1 adopts PSoC embedded system wafer, and its input/output terminal links to each other with power supply to be monitored, RS485 communication chip 2 respectively.Described DC-DC power module 3 adopts the EC1SA01N chip, flying capcitor C802, C811 on its 1st, 2 pin, and the end of capacitor C 802, C811 and joining power VCC1, the other end of capacitor C 802, C811 is GND1 altogether; Flying capcitor C812, C803 on its 4th, 6 pin, the end of capacitor C 812, C803 and joining power VCC2, the other end of capacitor C 812, C803 is GND2 altogether.
As shown in Figure 2, described RS485 communication chip 2 adopts the ADM2486 chip, its the 1st, 7 pin meets power supply VCC1, its the 3rd pin connects the RXD pin of PSoC embedded system wafer, and its 6th pin connects the TXD pin of PSoC embedded system wafer, and its 4th, 5 pin connects the EN pin of PSoC embedded system wafer, its the 2nd, 8 pin meets GND1,9th, 15 pins meet GND2, and its 16th pin meets power supply VCC2, its 12nd, 13 pin and upper machine communication.The 1st pin of described ADM2486 chip is by capacitor C 828 ground connection GND1, its the 16th pin respectively with resistance R 809, capacitor C 807 links to each other, and by electric capacity R807 ground connection GND2, resistance R 809 and resistance R 811 are given the 12nd pin of ADM2486 after with the VCC2 dividing potential drop, resistance R 843 is connected across the 12nd of ADM2486 chip, on 13 pins, resistance R 811 is by capacitor C 809 ground connection GND2, resistance R 843 is by capacitor C 808 ground connection GND2, the two ends of resistance R 843 also respectively with resistance R 812, the end of R813 links to each other, the other end of resistance R 812 is managed respectively the negative electrode of V803 with TVS, the negative electrode of V801, host computer links to each other, the plus earth GND2 of TVS pipe V803, the other end of resistance R 813 is managed respectively the negative electrode of V802 with TVS, the anode of V801, host computer links to each other, the plus earth GND2 of TVS pipe V802.
Below in conjunction with Fig. 1,2 the present invention is further illustrated.
The sample various duties of power supply to be monitored of PSoC embedded system wafer, its sampled signal is except the sampling of voltage, electric current, all being digital signals, is that " 0 " or " 1 " judge that power work is in " normally " or " fault " state by each the road signal that samples; By sampling the output voltage values of power supply, output current value carries out delivering to PSoC embedded system wafer after the voltage division processing and does the A/D conversion, converts analog quantity to digital quantity.
RS485 communication chip 2 is selected the ADM2486 chip of band isolation, is that its 12nd, 13 pin has all added V801, V802, three TVS pipes of V803 and runs into the moment noise jamming when being suppressed at communication at signal transmission ends A, B two ends.At the signal transmission ends of ADM2486 chip connected resistance R 812, R813, hardware fault just can not make whole bus communication be affected like this.In addition, in the field conduct of application system, because the communication carrier is twisted-pair feeder, its characteristic impedance is about 120 Ω, so when design, in the indirect resistance R 843 in A, the B two ends of RS485 differential signal transmission, capacitor C 808 filtering have also been connect, to reduce the reflection of signal transmission on the circuit.
In sum, the present invention can carry out Monitoring and Controlling to power supply, if power supply breaks down, can see by host computer address code and the fault type of the power supply that breaks down.Can save the process of investigation in the process of maintenance, the address code that directly contrasts the host computer demonstration finds corresponding power supply, heads direct for the circuit that corresponding fault occurs during maintenance and checks.
Claims (5)
1. Power Monitoring Unit based on the RS485 communication, it is characterized in that: comprise be used to the main control chip that gathers power work information to be monitored (1), the input/output terminal of main control chip (1) links to each other with the input/output terminal of RS485 communication chip (2), the input/output terminal of RS485 communication chip (2) links to each other with the input/output terminal of host computer, and DC-DC power module (3) is powered to RS485 communication chip (2).
2. the Power Monitoring Unit based on the RS485 communication according to claim 1 is characterized in that: described main control chip (1) adopts PSoC embedded system wafer, and its input/output terminal links to each other with power supply to be monitored, RS485 communication chip (2) respectively.
3. the Power Monitoring Unit based on the RS485 communication according to claim 2, it is characterized in that: described DC-DC power module (3) adopts the EC1SA01N chip, flying capcitor C802, C811 on its 1st, 2 pin, the end of capacitor C 802, C811 and joining power VCC1, the other end of capacitor C 802, C811 is GND1 altogether; Flying capcitor C812, C803 on its 4th, 6 pin, the end of capacitor C 812, C803 and joining power VCC2, the other end of capacitor C 812, C803 is GND2 altogether.
4. the Power Monitoring Unit based on the RS485 communication according to claim 3, it is characterized in that: described RS485 communication chip (2) adopts the ADM2486 chip, its the 1st, 7 pin meets power supply VCC1, its the 3rd pin connects the RXD pin of PSoC embedded system wafer, its the 6th pin connects the TXD pin of PSoC embedded system wafer, its the 4th, 5 pin connects the EN pin of PSoC embedded system wafer, its the 2nd, 8 pin meets GND1,9th, 15 pins meet GND2, its the 16th pin meets power supply VCC2, its 12nd, 13 pin and upper machine communication.
5. the Power Monitoring Unit based on the RS485 communication according to claim 4, it is characterized in that: the 1st pin of described ADM2486 chip is by capacitor C 828 ground connection GND1, its the 16th pin respectively with resistance R 809, capacitor C 807 links to each other, and by electric capacity R807 ground connection GND2, resistance R 809 and resistance R 811 are given the 12nd pin of ADM2486 after with the VCC2 dividing potential drop, resistance R 843 is connected across the 12nd of ADM2486 chip, on 13 pins, resistance R 811 is by capacitor C 809 ground connection GND2, resistance R 843 is by capacitor C 808 ground connection GND2, the two ends of resistance R 843 also respectively with resistance R 812, the end of R813 links to each other, the other end of resistance R 812 is managed respectively the negative electrode of V803 with TVS, the negative electrode of V801, host computer links to each other, the plus earth GND2 of TVS pipe V803, the other end of resistance R 813 is managed respectively the negative electrode of V802 with TVS, the anode of V801, host computer links to each other, the plus earth GND2 of TVS pipe V802.
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| CN2012105541480A CN103048946A (en) | 2012-12-19 | 2012-12-19 | Power supply monitoring module communicated based on RS485 |
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| CN2012105541480A CN103048946A (en) | 2012-12-19 | 2012-12-19 | Power supply monitoring module communicated based on RS485 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2814482Y (en) * | 2005-01-25 | 2006-09-06 | 扬州双鸿电子有限公司 | Intelligent monitoring power supply |
| WO2008142425A1 (en) * | 2007-05-23 | 2008-11-27 | Onzo Limited | Apparatus for monitoring resource consumption |
| CN201417302Y (en) * | 2009-06-09 | 2010-03-03 | 陕西海博瑞德微电子有限公司 | Intelligent power supply monitoring module |
| CN101902078A (en) * | 2010-07-15 | 2010-12-01 | 哈尔滨九洲电气股份有限公司 | Centralized monitoring device in direct-current power supply system |
| CN202975693U (en) * | 2012-12-19 | 2013-06-05 | 合肥华耀电子工业有限公司 | Power monitoring module based on RS485 communication |
-
2012
- 2012-12-19 CN CN2012105541480A patent/CN103048946A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2814482Y (en) * | 2005-01-25 | 2006-09-06 | 扬州双鸿电子有限公司 | Intelligent monitoring power supply |
| WO2008142425A1 (en) * | 2007-05-23 | 2008-11-27 | Onzo Limited | Apparatus for monitoring resource consumption |
| CN201417302Y (en) * | 2009-06-09 | 2010-03-03 | 陕西海博瑞德微电子有限公司 | Intelligent power supply monitoring module |
| CN101902078A (en) * | 2010-07-15 | 2010-12-01 | 哈尔滨九洲电气股份有限公司 | Centralized monitoring device in direct-current power supply system |
| CN202975693U (en) * | 2012-12-19 | 2013-06-05 | 合肥华耀电子工业有限公司 | Power monitoring module based on RS485 communication |
Non-Patent Citations (1)
| Title |
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| 胡建东等: "雷达电源监控系统设计", 《现代雷达》 * |
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Application publication date: 20130417 |