CN201956754U - Charger monitor and on-line charger monitoring device - Google Patents

Charger monitor and on-line charger monitoring device Download PDF

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Publication number
CN201956754U
CN201956754U CN2011200814694U CN201120081469U CN201956754U CN 201956754 U CN201956754 U CN 201956754U CN 2011200814694 U CN2011200814694 U CN 2011200814694U CN 201120081469 U CN201120081469 U CN 201120081469U CN 201956754 U CN201956754 U CN 201956754U
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CN
China
Prior art keywords
charger
microprocessor
connects
circuit
pin
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Expired - Lifetime
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CN2011200814694U
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Chinese (zh)
Inventor
赵军
石光
韩平
孔圣立
马建辉
秦庆章
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State Grid Corp of China SGCC
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HEBEI CHUANGKE ELECTRONIC TECHNOLOGY Co Ltd
Electric Power Research Institute of State Grid Henan Electric Power Co Ltd
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Application filed by HEBEI CHUANGKE ELECTRONIC TECHNOLOGY Co Ltd, Electric Power Research Institute of State Grid Henan Electric Power Co Ltd filed Critical HEBEI CHUANGKE ELECTRONIC TECHNOLOGY Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/7838
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/124Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses

Abstract

The utility model relates to a charger monitor. A network communication end of a microprocessor of the charger monitor is connected with the first end of a network interface circuit, the second end of the network interface circuit is used for connecting a host device, the monitoring signal communication end of the microprocessor is connected with the first end of a charger communication circuit to be detected, the second end of the charger communication circuit to be detected is used for connecting the communication end of a charger to be detected, the signal collection input ends of a voltage signal collection and modulation circuit and a current signal collection and modulation circuit are respectively used for receiving direct current voltage and current signals of the charger to be detected, and the signal output ends of the voltage signal collection and modulation circuit and the current signal collection and modulation circuit are respectively connected with the voltage collection signal input end and the current collection signal input end of the microprocessor. An on-line charger monitoring device comprises a host management machine and the charger monitor which are connected through Ethernet.

Description

A kind of charger watch-dog and a kind of charger on-Line Monitor Device
Technical field:
The utility model relates to the direct current system charger performance detection apparatus of electricity substation, relates in particular to charger watch-dog and a kind of charger on-Line Monitor Device.
Background technology:
At present, unattended substation is promoted in electric power system, though the control centre can obtain the real time information of substation operation situation by telecontrol channel, but for direct current component can only obtain a spot of important information (comprising: the remote signalling amount---the charger AC power failure, the charger fault, D.C. isolation ground connection, the DC power supply electric voltage exception; Remote measurement amount---controlling voltage), it can not reflect the details of direct current system operation; For charger, its performance index such as ripple coefficient, the precision of voltage regulation, precision of steady current and equal properties of flow etc., owing to do not possess the corresponding online testing apparatus, be difficult to confirm whether meet the demands, can't in time pinpoint the problems, the consequence that is caused is exactly that storage battery lost efficacy in advance or damages, and directly threatens the safe operation of electrical network.In addition, the control of DC equipment operation is also carried out execute-in-place by the attendant.Transformer station is many, and the attendant is few, obviously can't guarantee to finish according to quantity on schedule.In early days, the technical indicator that charger reached, all be the data that manufacturer provides when the equipment delivery test, seldom it detected after the operation, along with development of science and technology, charger characteristic testing device has appearred, using it can test the charger performance, just can finish execute-in-place but need charger to break away from direct current system, waste time and energy, can't accomplish online in real time.Because the existence of above difficulty, a lot of units seldom carry out attribute testing to charger, and this buries huge hidden danger with regard to the safe operation of giving electric power system.
The utility model content:
The purpose of this utility model provides a kind of charger watch-dog and a kind of charger on-Line Monitor Device, to realize the on-line monitoring of transformer station direct current system charger.
A kind of charger watch-dog, wherein: comprise microprocessor, network interface circuit, tested charger communicating circuit, the voltage signal acquisition modulate circuit, the current signal acquisition and conditioning circuit, the network communication end of microprocessor connects first end of network interface circuit, second end of network interface circuit is used to connect upper device, the monitor signal communication terminal of microprocessor connects first end of tested charger communicating circuit, second end of tested charger communicating circuit is used to connect the communication terminal of tested charger, the voltage signal acquisition modulate circuit, the signals collecting input of current signal acquisition and conditioning circuit is respectively applied for the direct voltage that receives tested charger, current signal, the voltage signal acquisition modulate circuit, the signal output part of current signal acquisition and conditioning circuit connects the voltage acquisition signal input part of microprocessor respectively, the current acquisition signal input part.
Described charger watch-dog, wherein: described microprocessor adopts single-chip microcomputer LM3S6938.
Described charger watch-dog, wherein: described network interface circuit comprises network communication chip and first, second, the 3rd, the 4th pull-up resistor, first, second, the 3rd, first end of the 4th pull-up resistor all connects power supply, second end of first pull-up resistor is connected on the intermediate contact of RX-pin of the RXIN pin of microprocessor and network communication chip, second end of second pull-up resistor is connected on the intermediate contact of RX+ pin of the RXIP pin of microprocessor and network communication chip, second end of the 3rd pull-up resistor is connected on the intermediate contact of TX-pin of the TXON pin of microprocessor and network communication chip, and second end of the 4th pull-up resistor is connected on the intermediate contact of TX+ pin of the TXOP pin of microprocessor and network communication chip; The network communication chip adopts network transformer/RJ45 interface chip HR911105A.
Described charger watch-dog, wherein: described tested charger communicating circuit adopts RS485 interface circuit ADM2483.
Described charger watch-dog, wherein: described voltage signal acquisition modulate circuit comprises voltage sensor, first operational amplifier, the 7th resistance, first potentiometer, the one secondary input end two ends utmost point of voltage sensor connects the output of tested charger respectively and rectifies, negative pole, the signal output part of voltage sensor connects the in-phase input end of first operational amplifier, the inverting input of first operational amplifier connects the intermediate contact of the 7th resistance and first potentiometer, first break, the free ending grounding of the 7th resistance, second break of first potentiometer, the movable contact of first potentiometer connects the output of first operational amplifier, and the output of first operational amplifier connects the voltage acquisition signal input part of microprocessor;
Described current signal acquisition and conditioning circuit comprises current sensor, second operational amplifier, the 9th resistance, second potentiometer, the current sensor punching is on the direct current negative busbar of tested charger, the signal output part of current sensor connects the in-phase input end of second operational amplifier, the inverting input of second operational amplifier connects the intermediate contact of the 9th resistance and second potentiometer, first break, the free ending grounding of the 9th resistance, second break of second potentiometer, the movable contact of second potentiometer connects the output of second operational amplifier, and the output of second operational amplifier connects the current acquisition signal input part of microprocessor.
A kind of charger on-Line Monitor Device, wherein: comprise upper managing computer, charger watch-dog, be connected by Ethernet between upper managing computer and the charger watch-dog; Described charger watch-dog comprises microprocessor, network interface circuit, tested charger communicating circuit, the voltage signal acquisition modulate circuit, the current signal acquisition and conditioning circuit, the network communication end of microprocessor connects first end of network interface circuit, second end of network interface circuit connects upper device, the monitor signal communication terminal of microprocessor connects first end of tested charger communicating circuit, second end of tested charger communicating circuit is used to connect the communication terminal of tested charger, the voltage signal acquisition modulate circuit, the signals collecting input of current signal acquisition and conditioning circuit is respectively applied for the direct voltage that receives tested charger, current signal, the voltage signal acquisition modulate circuit, the signal output part of current signal acquisition and conditioning circuit connects the voltage acquisition signal input part of microprocessor respectively, the current acquisition signal input part.
Described charger on-Line Monitor Device, wherein: described microprocessor adopts single-chip microcomputer LM3S6938.
Described charger on-Line Monitor Device, wherein: described network interface circuit comprises network communication chip and first, second, the 3rd, the 4th pull-up resistor, first, second, the 3rd, first end of the 4th pull-up resistor all connects power supply, second end of first pull-up resistor is connected on the intermediate contact of RX-pin of the RXIN pin of microprocessor and network communication chip, second end of second pull-up resistor is connected on the intermediate contact of RX+ pin of the RXIP pin of microprocessor and network communication chip, second end of the 3rd pull-up resistor is connected on the intermediate contact of TX-pin of the TXON pin of microprocessor and network communication chip, and second end of the 4th pull-up resistor is connected on the intermediate contact of TX+ pin of the TXOP pin of microprocessor and network communication chip; The network communication chip adopts network transformer/RJ45 interface chip HR911105A.
Described charger on-Line Monitor Device, wherein: described tested charger communicating circuit adopts RS485 interface circuit ADM2483.
Described charger on-Line Monitor Device, wherein: described voltage signal acquisition modulate circuit comprises voltage sensor, first operational amplifier, the 7th resistance, first potentiometer, one secondary input end of voltage sensor just, negative pole connects the output of tested charger respectively and rectifies, negative pole, the signal output part of voltage sensor connects the in-phase input end of first operational amplifier, the inverting input of first operational amplifier connects the intermediate contact of the 7th resistance and first potentiometer, first break, the free ending grounding of the 7th resistance, second break of first potentiometer, the movable contact of first potentiometer connects the output of first operational amplifier, and the output of first operational amplifier connects the voltage acquisition signal input part of microprocessor;
Described current signal acquisition and conditioning circuit comprises current sensor, second operational amplifier, the 9th resistance, second potentiometer, the current sensor punching is on the direct current negative busbar of tested charger, the signal output part of current sensor connects the in-phase input end of second operational amplifier, the inverting input of second operational amplifier connects the intermediate contact of the 9th resistance and second potentiometer, first break, the free ending grounding of the 9th resistance, second break of second potentiometer, the movable contact of second potentiometer connects the output of second operational amplifier, and the output of second operational amplifier connects the current acquisition signal input part of microprocessor.
The utility model will reach following technique effect after adopting technique scheme:
Charger watch-dog of the present utility model, microprocessor carries out communication by tested charger communicating circuit with the charger that is connected, microprocessor is by the voltage signal acquisition modulate circuit, the current signal acquisition and conditioning circuit is gathered the voltage of charger, current signal, and processing draws voltage, electric current, ripple coefficient, the precision of voltage regulation, telemetries such as precision of steady current and current-sharing degree of unbalance, microprocessor sends above-mentioned data and switching value to upper managing computer by network interface circuit, and microprocessor also receives the instruction of upper managing computer and carries out corresponding operating by network interface circuit; The utility model also provides a kind of charger on-Line Monitor Device, adopt the corresponding signal of the collection of above-mentioned charger watch-dog, processing charger, be uploaded to the upper managing computer of the network other end, realize telecommunication, realize the real time on-line monitoring and the control of charger, in time obtain relevant information and real-time online control charger, make that the substation operation of unmanned management is safer.
Description of drawings:
Fig. 1 is the structured flowchart of the utility model charger on-Line Monitor Device;
Fig. 2 is the structured flowchart of the utility model charger watch-dog;
Fig. 3 is the circuit theory diagrams of charger watch-dog shown in Figure 2.
Embodiment:
The utility model provides a kind of charger watch-dog and a kind of charger on-Line Monitor Device.
Described charger on-Line Monitor Device as shown in Figure 1, comprises upper managing computer, described charger watch-dog, is connected by Ethernet between upper managing computer and the charger watch-dog, realizes communication; Described charger watch-dog such as Fig. 2, comprise microprocessor, network interface circuit, tested charger communicating circuit, the voltage signal acquisition modulate circuit, the current signal acquisition and conditioning circuit, the network communication end of microprocessor connects first end of network interface circuit, second end of network interface circuit connects upper device, the monitor signal communication terminal of microprocessor connects first end of tested charger communicating circuit, second end of tested charger communicating circuit is used to connect the communication terminal of tested charger, the voltage signal acquisition modulate circuit, the signals collecting input of current signal acquisition and conditioning circuit is respectively applied for the direct voltage that receives tested charger, current signal, the voltage signal acquisition modulate circuit, the signal output part of current signal acquisition and conditioning circuit connects the voltage acquisition signal input part of microprocessor respectively, the current acquisition signal input part.
Upper managing computer is one the charger performance monitoring that utilizes the establishment of VC language has been installed, the computer of testing software vertical application, upper managing computer is connected on the Ethernet, by Ethernet control charger watch-dog, by the charger performance monitoring in the operation upper managing computer, testing software, charger watch-dog sending controling instruction to far-end transformer station, remote control charger state exchange, and receive the voltage that the charger watch-dog is uploaded, electric current, switching value, malfunction, ripple coefficient, the precision of voltage regulation, remote measurements such as precision of steady current and current-sharing degree of unbalance, the remote signalling data.
As shown in Figure 3, microprocessor U1 adopts the LM3S6938 single-chip microcomputer, be company of Texas Instrument (TI) produce first based on ARM Cortex TM32 level controllers of-M3, the in-chip FLASH of 256K, the 64K on-chip SRAM, 10 A/D converter of one 8 passage, inner integrated 10/100 Ethernet media interviews control (MAC) and physical layer (PHY), meet IEEE 802.3-2002 standard, its advantage has been its compatibility third party's ICP/IP protocol stack can be realized the ethernet terminal nodal function of single-chip; Network (Ethernet) interface circuit adopts network transformer/RJ45 interface chip U2, and model is: HR911105A; Tested charger communicating circuit is 485 interface circuit U3, the employing model is ADM2483, it is the RS485 transceiver of a isolated form of ADI release, its the inner integrated icoupler of ADI patent (magnetic coupling) isolation technology, be equivalent on the function three single pass optocouplers and a RS485 transceiver integrated, speed is 500Kbps; Adopt Hall current sensor U6 in the current signal acquisition and conditioning circuit, model is: TBC-50LA, current signal conditioning part is that the employing second operational amplifier U7(model is LM358); Employing electromagnetism modulation voltage transducer U5 in the voltage signal acquisition modulate circuit, model is: WPE-DV, input 0 ~ 300V, output 0 ~ 5V, voltage signal conditioning part is that the employing first operational amplifier U8(model is LM358).
As shown in Figure 3, the GND of microprocessor U1, GNDA, GNDPHY, CMOD0 is connected with ground wire with the CMOD1 pin, the VDD of microprocessor U1, VDDA, the VCCPHY pin connects the 3.3V power supply, the LDO of microprocessor U1, the VDD25 pin connects the 2.5V power supply, the OSC0 of microprocessor U1, the OSC1 pin respectively with capacitor C 4, first end of C5 is connected, capacitor C 4, the equal ground connection of second end of C5, and OSC0 at microprocessor U1, meet a 8M crystal oscillator M1 between the OSC1 pin, U1 provides master clock signal for microprocessor, the XTALPPHY of microprocessor U1, the XTALNPHY pin respectively with capacitor C 2, first end of C3 links to each other, capacitor C 2, the second end ground connection of C3, and XTALPPHY at microprocessor U1, meet a 25M crystal oscillator M2 between the XTALNPHY pin, for ethernet access control (MAC) and physical layer (PHY) provide clock signal; The RST pin of microprocessor U1 is connected with first end of first end of resistance R 11 and capacitor C 1, the second termination 3.3V power supply of resistance R 11, the second end ground connection of capacitor C 1, resistance R 11 and capacitor C 1 constitute the RC circuit, are used to microprocessor U1 to finish the electrification reset function.
Resistance R 1, R2, R3, the TXCT of first end of R4 and network transformer/RJ45 interface chip U2, the RXCT pin connects the 3.3V power supply jointly, the intermediate contact of the RXIN pin of resistance R 1 second end connection microprocessor U1 and the RX-pin of network transformer/RJ45 interface chip U2, the intermediate contact of the RXIP pin of resistance R 2 second ends connection microprocessor U1 and the RX+ pin of network transformer/RJ45 interface chip U2, the intermediate contact of the TXON pin of resistance R 3 second ends connection microprocessor U1 and the TX-pin of network transformer/RJ45 interface chip U2, the intermediate contact of the TXOP pin of resistance R 4 second ends connection microprocessor U1 and the TX+ pin of network transformer/RJ45 interface chip U2, the GND pin ground connection of network transformer/RJ45 interface chip U2; Resistance R 1, R2, R3, R4 and network transformer/RJ45 interface chip U2 forms network interface circuit.
The RXIP of microprocessor U1, RXIN, TX0P, TX0N pin connect network transformer/RX+, RX-of RJ45 interface chip U2, TX+, TX-pin respectively, constitute the ethernet communication loop, carry out communication by Ethernet and upper managing computer, accept remote control command, upload telemetry;
In the tested charger communicating circuit, the VDD1 of 485 interface circuit U3, PV pin connect the 3.3V power supply, the GND1 pin ground connection of 485 interface circuit U3, the RXO pin of 485 interface circuit U3 is connected with the PA3 pin of microprocessor U1, the TXI pin of 485 interface circuit U3 is connected with the PA0 pin of microprocessor U1, and the RE of 485 interface circuit U3, DE pin link to each other with the PA1 pin of microprocessor U1 simultaneously; The A of 485 interface circuit U3, B, VDD2, GND2 pin connect the RS485 bus.
The TXI pin of 485 interface circuit U3 connects the PA0 pin of microprocessor U1, the DE of 485 interface circuit U3, RE pin connect the PA1 pin of microprocessor U1 simultaneously, the RXO pin of 485 interface circuit U3 connects the PA3 pin of microprocessor U1, so constitute the RS485 order circuit, realize that communication is connected between microprocessor U1 and the tested charger U4;
The anodal U+ of the secondary input end of voltage sensor U5 is connected with the positive pole "+" of tested charger output, the negative pole U-of the secondary input end of voltage sensor U5 is connected with the negative pole "-" of tested charger output, voltage sensor U5+the E pin connects the 12V power supply, the GND pin ground connection of voltage sensor U5, the signal output part Uz of voltage sensor U5 links to each other by in-phase input end 3 pin that resistance R 8 connects the first operational amplifier A MP1, output 1 pin of the first operational amplifier U8 connects the A/D input pin ADC1(2 pin of microprocessor U1), inverting input 2 pin of the first operational amplifier U8 connect the intermediate contact of the 7th resistance R 7 and the first potentiometer W1, first break, the free ending grounding of the 7th resistance R 7, second break of the first potentiometer W1, the movable contact of the first potentiometer W1 connects output 1 pin of the first operational amplifier U8.
Current sensor U6 punching is on the direct current negative busbar of tested charger, current sensor U6+the E pin connects the positive pole of 12V power supply, current sensor U6-the E pin connects the negative pole of 12V power supply, the GND pin ground connection of current sensor U6, the signal output part Uz of current sensor U6 connects in-phase input end 3 pin of the second operational amplifier U7 by resistance R 10, output 1 pin of the second operational amplifier U7 connects an A/D input pin (1 pin) ADC0 of microprocessor U1 and constitutes current signal sampling conditioning loop, inverting input 2 pin of the second operational amplifier U7 connect the intermediate contact of the 9th resistance R 9 and the second potentiometer W2, first break, the free ending grounding of the 9th resistance R 9, second break of the second potentiometer W2, the movable contact of the second potentiometer W2 connects output 1 pin of the second operational amplifier U7.
Microprocessor U1 receives the upper managing computer remote control command through network transformer/RJ45 interface chip U2 from Ethernet, then, microprocessor U1 is through 485 interface circuit U3 control charger state exchange and read the charger state information, the voltage signal acquisition modulate circuit, voltage in the current signal acquisition and conditioning circuit, current sensor is respectively the voltage signal of charger output, the electric current forceful electric power Signal Spacing of charger direct current component changes 0~5V weak electric signal into, afterwards, correspondingly pass to first, second operational amplifier carries out signal and amplifies, conditioning, through first, voltage after the conditioning of second operational amplifier, current signal, pass to the corresponding A/D input pin of microprocessor U1, gather by microprocessor U1, calculate, arrangement obtains voltage, electric current, ripple coefficient, the precision of voltage regulation, telemetries such as precision of steady current and current-sharing degree of unbalance, the above-mentioned data that microprocessor U1 will calculate are uploaded direct voltage by Ethernet to upper managing computer through network transformer/RJ45 interface chip U2, electric current, switching value, malfunction, ripple coefficient, the precision of voltage regulation, remote signalling such as precision of steady current and current-sharing degree of unbalance, telemetry intelligence (TELINT).
Charger watch-dog of the present utility model is used to detect charger all fills the stage in floating charge, constant voltage ripple coefficient, the precision of voltage regulation, the precision of steady current in stage is all filled in constant current, the equal properties of flow of charger, charger on-Line Monitor Device of the present utility model utilizes the real-time ethernet communication technology to realize communicating by letter between upper managing computer and the charger watch-dog, and the energy remote online monitors charger running status and failure condition.
Adopt the beneficial effect of charger watch-dog of the present utility model and charger on-line monitoring device:
1, telemonitoring charger running status and failure condition, the conversion of remote control charger state, simultaneously online remote measurement charger all fills ripple factor, the precision of voltage regulation in stage in floating charge, constant voltage, the precision of steady current in stage is all filled in constant current, the current-sharing characteristic of charger, in time find and process problem, and do not wait its development to develop into accident.
2, overcome and only had charger disengaging straight-flow system just can carry out the deficiency of performance test, reduced to greatest extent the maloperation that artificial execute-in-place brings, to safe operation of power system, provide strong guarantee.
3, avoid the fatigued of round scene, saved a large amount of man power and materials, improved operating efficiency.

Claims (10)

1. charger watch-dog, it is characterized in that: comprise microprocessor, network interface circuit, tested charger communicating circuit, the voltage signal acquisition modulate circuit, the current signal acquisition and conditioning circuit, the network communication end of microprocessor connects first end of network interface circuit, second end of network interface circuit is used to connect upper device, the monitor signal communication terminal of microprocessor connects first end of tested charger communicating circuit, second end of tested charger communicating circuit is used to connect the communication terminal of tested charger, the voltage signal acquisition modulate circuit, the signals collecting input of current signal acquisition and conditioning circuit is respectively applied for the direct voltage that receives tested charger, current signal, the voltage signal acquisition modulate circuit, the signal output part of current signal acquisition and conditioning circuit connects the voltage acquisition signal input part of microprocessor respectively, the current acquisition signal input part.
2. charger watch-dog as claimed in claim 1 is characterized in that: described microprocessor adopts single-chip microcomputer LM3S6938.
3. charger watch-dog as claimed in claim 2, it is characterized in that: described network interface circuit comprises network communication chip and first, second, the 3rd, the 4th pull-up resistor, first, second, the 3rd, first end of the 4th pull-up resistor all connects power supply, second end of first pull-up resistor is connected on the intermediate contact of RX-pin of the RXIN pin of microprocessor and network communication chip, second end of second pull-up resistor is connected on the intermediate contact of RX+ pin of the RXIP pin of microprocessor and network communication chip, second end of the 3rd pull-up resistor is connected on the intermediate contact of TX-pin of the TXON pin of microprocessor and network communication chip, and second end of the 4th pull-up resistor is connected on the intermediate contact of TX+ pin of the TXOP pin of microprocessor and network communication chip; The network communication chip adopts network transformer/RJ45 interface chip HR911105A.
4. charger watch-dog as claimed in claim 3 is characterized in that: described tested charger communicating circuit adopts RS485 interface circuit ADM2483.
5. charger watch-dog as claimed in claim 4, it is characterized in that: described voltage signal acquisition modulate circuit comprises voltage sensor, first operational amplifier, the 7th resistance, first potentiometer, the one secondary input end two ends utmost point of voltage sensor connects the output of tested charger respectively and rectifies, negative pole, the signal output part of voltage sensor connects the in-phase input end of first operational amplifier, the inverting input of first operational amplifier connects the intermediate contact of the 7th resistance and first potentiometer, first break, the free ending grounding of the 7th resistance, second break of first potentiometer, the movable contact of first potentiometer connects the output of first operational amplifier, and the output of first operational amplifier connects the voltage acquisition signal input part of microprocessor;
Described current signal acquisition and conditioning circuit comprises current sensor, second operational amplifier, the 9th resistance, second potentiometer, the current sensor punching is on the direct current negative busbar of tested charger, the signal output part of current sensor connects the in-phase input end of second operational amplifier, the inverting input of second operational amplifier connects the intermediate contact of the 9th resistance and second potentiometer, first break, the free ending grounding of the 9th resistance, second break of second potentiometer, the movable contact of second potentiometer connects the output of second operational amplifier, and the output of second operational amplifier connects the current acquisition signal input part of microprocessor.
6. charger on-Line Monitor Device is characterized in that: comprise upper managing computer, charger watch-dog, be connected by Ethernet between upper managing computer and the charger watch-dog; Described charger watch-dog comprises microprocessor, network interface circuit, tested charger communicating circuit, the voltage signal acquisition modulate circuit, the current signal acquisition and conditioning circuit, the network communication end of microprocessor connects first end of network interface circuit, second end of network interface circuit connects upper device, the monitor signal communication terminal of microprocessor connects first end of tested charger communicating circuit, second end of tested charger communicating circuit is used to connect the communication terminal of tested charger, the voltage signal acquisition modulate circuit, the signals collecting input of current signal acquisition and conditioning circuit is respectively applied for the direct voltage that receives tested charger, current signal, the voltage signal acquisition modulate circuit, the signal output part of current signal acquisition and conditioning circuit connects the voltage acquisition signal input part of microprocessor respectively, the current acquisition signal input part.
7. charger on-Line Monitor Device as claimed in claim 6 is characterized in that: described microprocessor adopts single-chip microcomputer LM3S6938.
8. charger on-Line Monitor Device as claimed in claim 7, it is characterized in that: described network interface circuit comprises network communication chip and first, second, the 3rd, the 4th pull-up resistor, first, second, the 3rd, first end of the 4th pull-up resistor all connects power supply, second end of first pull-up resistor is connected on the intermediate contact of RX-pin of the RXIN pin of microprocessor and network communication chip, second end of second pull-up resistor is connected on the intermediate contact of RX+ pin of the RXIP pin of microprocessor and network communication chip, second end of the 3rd pull-up resistor is connected on the intermediate contact of TX-pin of the TXON pin of microprocessor and network communication chip, and second end of the 4th pull-up resistor is connected on the intermediate contact of TX+ pin of the TXOP pin of microprocessor and network communication chip; The network communication chip adopts network transformer/RJ45 interface chip HR911105A.
9. charger on-Line Monitor Device as claimed in claim 8 is characterized in that: described tested charger communicating circuit adopts RS485 interface circuit ADM2483.
10. charger on-Line Monitor Device as claimed in claim 9, it is characterized in that: described voltage signal acquisition modulate circuit comprises voltage sensor, first operational amplifier, the 7th resistance, first potentiometer, one secondary input end of voltage sensor just, negative pole connects the output of tested charger respectively and rectifies, negative pole, the signal output part of voltage sensor connects the in-phase input end of first operational amplifier, the inverting input of first operational amplifier connects the intermediate contact of the 7th resistance and first potentiometer, first break, the free ending grounding of the 7th resistance, second break of first potentiometer, the movable contact of first potentiometer connects the output of first operational amplifier, and the output of first operational amplifier connects the voltage acquisition signal input part of microprocessor;
Described current signal acquisition and conditioning circuit comprises current sensor, second operational amplifier, the 9th resistance, second potentiometer, the current sensor punching is on the direct current negative busbar of tested charger, the signal output part of current sensor connects the in-phase input end of second operational amplifier, the inverting input of second operational amplifier connects the intermediate contact of the 9th resistance and second potentiometer, first break, the free ending grounding of the 9th resistance, second break of second potentiometer, the movable contact of second potentiometer connects the output of second operational amplifier, and the output of second operational amplifier connects the current acquisition signal input part of microprocessor.
CN2011200814694U 2011-03-25 2011-03-25 Charger monitor and on-line charger monitoring device Expired - Lifetime CN201956754U (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102142704A (en) * 2011-03-25 2011-08-03 河南电力试验研究院 Charger monitor and online charger monitoring device
CN104181430A (en) * 2014-09-02 2014-12-03 国家电网公司 Off-board charger detection device and method
CN107302253A (en) * 2017-08-15 2017-10-27 安徽华凯新能源科技有限公司 The adaptive Vehicular charger of charging curve
CN108462218A (en) * 2018-01-29 2018-08-28 上海科众恒盛云计算科技有限公司 A kind of accumulator online monitoring system and its method
CN111371142A (en) * 2020-03-23 2020-07-03 苏州万祥科技股份有限公司 Standby control system of charger
CN113093045A (en) * 2021-04-06 2021-07-09 广东电网有限责任公司 Power quality monitoring device, system and method for alternating current-direct current conversion power supply

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102142704A (en) * 2011-03-25 2011-08-03 河南电力试验研究院 Charger monitor and online charger monitoring device
CN102142704B (en) * 2011-03-25 2013-06-19 河南省电力公司电力科学研究院 Charger monitor and online charger monitoring device
CN104181430A (en) * 2014-09-02 2014-12-03 国家电网公司 Off-board charger detection device and method
CN104181430B (en) * 2014-09-02 2017-01-11 国家电网公司 Off-board charger detection device and method
CN107302253A (en) * 2017-08-15 2017-10-27 安徽华凯新能源科技有限公司 The adaptive Vehicular charger of charging curve
CN108462218A (en) * 2018-01-29 2018-08-28 上海科众恒盛云计算科技有限公司 A kind of accumulator online monitoring system and its method
CN108462218B (en) * 2018-01-29 2020-02-21 上海科众恒盛云计算科技有限公司 Storage battery online monitoring system and method thereof
CN111371142A (en) * 2020-03-23 2020-07-03 苏州万祥科技股份有限公司 Standby control system of charger
CN113093045A (en) * 2021-04-06 2021-07-09 广东电网有限责任公司 Power quality monitoring device, system and method for alternating current-direct current conversion power supply

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