CN202975693U - Power monitoring module based on RS485 communication - Google Patents
Power monitoring module based on RS485 communication Download PDFInfo
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- CN202975693U CN202975693U CN 201220705425 CN201220705425U CN202975693U CN 202975693 U CN202975693 U CN 202975693U CN 201220705425 CN201220705425 CN 201220705425 CN 201220705425 U CN201220705425 U CN 201220705425U CN 202975693 U CN202975693 U CN 202975693U
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Abstract
The utility model relates to a power monitoring module based on RS485 communication, comprising a main control chip for acquiring the working information of a power source to be monitored, wherein the input/output end of the main control chip is connected with the input/output end of an RS485 communication chip; the input/output end of the RS485 communication chip is connected with the input/output end of an upper computer; and a DC-DC power module supplies power to the RS485 communication chip. The power monitoring module based on RS485 communication acquires the working state information, including voltage, current and the like of the power source to be monitored through the main control chip and sends the working state information of the power source to be monitored to the upper computer through the RS485 communication chip; and when the power source to be monitored has a fault, the maintainer can check the fault information and the fault point on the upper computer; therefore, the fault point can be found out without turning on the power source with the accurate pointcut in overhauling; therefore, the power monitoring module is convenient for repair.
Description
Technical field
The utility model relates to 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 is not in the situation that increase impact damper only to reach 15 meters.
The utility model content
The purpose of this utility model is to provide a kind of can pass to power information 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 is connected with the input/output terminal of RS485 communication chip, the input/output terminal of RS485 communication chip is connected 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 is connected 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 is connected, 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 is connected, the other end of resistance R 812 is managed respectively the negative electrode of V803 with TVS, the negative electrode of V801, host computer is connected, 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 is connected, the plus earth GND2 of TVS pipe V802.
As shown from the above technical solution, the utility model 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 opening power, be convenient to maintenance.
Description of drawings
Fig. 1 is circuit block diagram of the present utility model;
Fig. 2 is circuit theory diagrams of the present utility model.
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 is connected with the input/output terminal of RS485 communication chip 2, the input/output terminal of RS485 communication chip 2 is connected 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 is connected 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 is connected, 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 is connected, the other end of resistance R 812 is managed respectively the negative electrode of V803 with TVS, the negative electrode of V801, host computer is connected, 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 is connected, the plus earth GND2 of TVS pipe V802.
Be further described below in conjunction with Fig. 1,2 pairs of the utility model.
The various duties of PSoC embedded system wafer sampling power supply to be monitored, its sampled signal is except the sampling of voltage, electric current, being all digital signals, is that " 0 " or " 1 " judge that power work is in " normally " or " fault " state by each 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 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 to run 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 circuit.
In sum, the utility model 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) is connected with the input/output terminal of RS485 communication chip (2), the input/output terminal of RS485 communication chip (2) is connected 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 is connected 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 is connected, 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 is connected, the other end of resistance R 812 is managed respectively the negative electrode of V803 with TVS, the negative electrode of V801, host computer is connected, 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 is connected, the plus earth GND2 of TVS pipe V802.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220705425 CN202975693U (en) | 2012-12-19 | 2012-12-19 | Power monitoring module based on RS485 communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220705425 CN202975693U (en) | 2012-12-19 | 2012-12-19 | Power monitoring module based on RS485 communication |
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| Publication Number | Publication Date |
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| CN202975693U true CN202975693U (en) | 2013-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220705425 Expired - Lifetime CN202975693U (en) | 2012-12-19 | 2012-12-19 | Power monitoring module based on RS485 communication |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103048946A (en) * | 2012-12-19 | 2013-04-17 | 合肥华耀电子工业有限公司 | Power supply monitoring module communicated based on RS485 |
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2012
- 2012-12-19 CN CN 201220705425 patent/CN202975693U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103048946A (en) * | 2012-12-19 | 2013-04-17 | 合肥华耀电子工业有限公司 | Power supply monitoring module communicated based on RS485 |
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| GR01 | Patent grant | ||
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| CX01 | Expiry of patent term |
Granted publication date: 20130605 |