CN104240493A - Detection equipment and detection method for single-phase carrier module of intelligent meter - Google Patents
Detection equipment and detection method for single-phase carrier module of intelligent meter Download PDFInfo
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- CN104240493A CN104240493A CN201410474408.2A CN201410474408A CN104240493A CN 104240493 A CN104240493 A CN 104240493A CN 201410474408 A CN201410474408 A CN 201410474408A CN 104240493 A CN104240493 A CN 104240493A
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Abstract
The invention discloses detection equipment and a detection method for a single-phase carrier module of an intelligent meter. The detection equipment consists of a strong and weak current converting unit, an isolating circuit of an alternating current power supply, a pure 220V alternating current interface, an attenuation circuit and a detection circuit, wherein the detection circuit comprises a strong current interface, a microcontroller, a 'test start triggering' button at a triggering end, a relay control unit, a level detection unit, a reading controller communication interface, a weak current interface, a weak current interface protection unit and a sound and light alarm circuit connected at a judgment output end of the microcontroller, the reading controller communication interface is connected with the pure 220V alternating current interface through a reader, a control end of the sound and light alarm circuit is connected with an output end of the microcontroller, and the 'test start triggering' button is connected with the microcontroller. The equipment is used for detecting newly-mounted modules, and the modules which are detected to be normal are taken to sites to be mounted newly; modules to be sent to the sites to replace fault modules are also required to be detected, so that fault modules are prevented from being brought to the sites.
Description
Technical field
The present invention relates to mainly in present electric power enterprise intelligent meter installation and use procedure, the power carrier fault of the single-phase carrier module communication of intelligent meter occurred, the single-phase carrier module of intelligent meter is carried out to a kind of method and the checkout equipment of failure judgement, particularly the single-phase carrier module checkout equipment of a kind of intelligent meter and detection method.
Background technology
Low-voltage powerline carrier communication (Power Line Communication) refers to and utilizes existing low-voltage power spider lines as transmission medium, realizes a kind of technology of data transmission and message exchange.This transmission channel of low-voltage powerline carrier communication is widely distributed, without the need to separately building, the feature of plug and play, conveniently moving has very strong attractive force for the demand meeting people, is widely used in the remote meter reading realizing intelligent meter at present.
The major function of low-voltage power line Intelligent carrier module is: external control system sends single-chip microcomputer P89LPC932 the data that will transmit to by UART, I2C or SPI serial line interface of standard, then by microcontroller and modulation circuit part Data Modulation on low-voltage power line; Meanwhile, the data that low-voltage power line is modulated recalled by demodulator circuit partial solution and by UART, I2C or SPI serial line interface of single-chip microcomputer P89LPC932 standard, the data on low-voltage power line sent to external control system to process accordingly.
Build a part for intelligent grid as electric power enterprise, installing and using of intelligent electric meter has been carried out more than a year, also in progressively installing.But install in popularization at intelligent meter and find that a lot of intelligent meter signal can not normally return, the way taked now is: use to curstomer's site and copy control device and palm machine and cooperation, to copy control device is connected on power circuit, gather the signal that carrier module sends, have in the palm machine display make a copy for data then module can normally work, otherwise judge module fault, spot replace module detects again, until detect that signal is correct.This method needs reciprocating, and also the easy module by tape jam takes scene to.
Summary of the invention
The technical problem to be solved in the present invention is to provide the single-phase carrier module checkout equipment of a kind of intelligent meter and detection method, can detect the module of new clothes, detects and takes on-the-spot new clothes again to normally; That changes malfunctioning module going to scene also will detect, before avoiding taking the module of tape jam to scene.
The single-phase carrier module checkout equipment of the intelligent meter that the present invention relates to, by the buffer circuit of strong and weak electricity current conversion unit, AC power, pure 220V alternating current interface, attenuator circuit, testing circuit, described testing circuit comprises forceful electric power interface, microcontroller, " starting test to trigger " button of trigger end, relay control unit, level detection unit, copy control device communication interface, light current interface, light current interface protection unit, be connected on the sound light alarming circuit composition of the judgement output terminal of microcontroller in addition, 220V electric main is changed direct current and powers to testing circuit by described strong and weak electricity power conversion unit, 220V electric main is become pure 220V alternating current and is connected with forceful electric power interface through attenuator circuit by described buffer circuit, described light current interface is connected with emblem controller through light current interface protection unit, described level detection unit to be connected between light current interface and microcontroller and to be controlled by relay control unit, relay control unit is also connected with emblem controller output end, described control device communication interface of copying is connected with pure 220V alternating current interface through device of making a copy for, the control end of described sound light alarming circuit is connected with emblem controller output end, described " starting test to trigger " button is connected with microcontroller.
The single-phase carrier module checkout equipment of the intelligent meter that the present invention relates to and detection method
,step is as follows:
1, press " start to detect and trigger " button to start to detect, microcontroller is by relay control unit (MCU) adhesive, and level detection unit sends sense command to light current interface, carries out detection level, sends to MCU to judge weak electric signal by testing circuit; Order is simultaneously copied control device communication interface (I/O) RS232 and is sent instruction to check meter test to copying control device, judged to copying control device communication interface to MCU through attenuator circuit, pure 220V alternating current interface acquisition module high-pressure side information by forceful electric power interface, MCU sends to controlled by sound and light unit and judges order again; A circulation terminates, and relay cuts off automatically;
2, light current interface level detects
After light current interface receives sense command, the VDD-15 interface voltage of carrier module 5V is extracted; Simultaneously to VCC-19, the 20 interface voltages extractions of 12V, be qualified in 5V ± 5% scope by MCU criterion voltage " 5V ", otherwise defective; Criterion voltage " 12V " is qualified at 12V-15V, otherwise defective;
Through MCU, the EVENOUT level extracting carrier module interface is judged as that low level is qualified, otherwise defective; Through MCU, the SET level extracting carrier module 14 interface is judged as that low level is qualified, otherwise defective; Through MCU, the SET level extracting carrier module 12 interface is judged as that low level is qualified, otherwise defective;
3,communication and consumption detection
?
1) MCU issues order of checking meter to copying control device by 232 serial ports;
2) MCU detects the sending power consumption of single-phase carrier module, if power consumption is at below 2.5w, qualified, proceed step 3), otherwise flow process terminates, power consumption test is defective;
3) MCU judges whether to receive acknowledgement frame, and resolves, if correct, flow process terminates, communication and power consumption test qualified, otherwise proceed step 4);
4) copy reading Ci Shuo≤twice, then flow process terminates, communication and power consumption test qualified, otherwise go to step 1).
Beneficial effect of the present invention: compact conformation, software flow are succinct, simple to operation is the excellent tool of test single-phase carrier functions of modules and performance; The power utilization environment of frock and complicated power grid environment can be kept apart by simple and practical isolation network, both turn avoid frock interference to external world for frock provides pure supply network; To be decayed after (76dB) to the carrier signal of main and subordinate node by attenuation network and carry out receiving demodulation, simulated field line of electric force, to the decay of carrier signal, detects the transmitting-receiving performance of carrier wave; Efficient MCU controls, and simulates host computer and electric energy meter simultaneously, and not only structure is simple, and with low cost; The Control put in place, has taken into full account the safety factor in operating process; The protection of comprehensive light current pin, effectively prevent hot plug operations and the external interference damage to frock chip and carrier module; Real-time sound light alarming circuit, shows each testing procedure and test result in time, is convenient to problem analysis; Perfect Row control, carries out complete test to the onsite application process of single-phase carrier module.
Accompanying drawing explanation
Fig. 1 is the system diagram of the single-phase carrier module checkout equipment of intelligent meter;
Fig. 2 is the block diagram of the single-phase carrier module checkout equipment of intelligent meter;
Fig. 3 is the single-phase carrier module checkout equipment of intelligent meter
weakelectrical interface schematic diagram;
Fig. 4 is carrier module carrier wave coupling interface schematic diagram.
Fig. 5 is the process flow diagram of the single-phase carrier module detection method of intelligent meter;
Fig. 6 is level detection process flow diagram in Fig. 5;
Fig. 7 is process flow diagram of checking meter in Fig. 5.
Embodiment
As shown in Figure 1 and Figure 2, the single-phase carrier module checkout equipment of the intelligent meter that the present invention relates to, by the buffer circuit of strong and weak electricity current conversion unit, AC power, pure 220V alternating current interface, attenuator circuit, testing circuit, described testing circuit comprises forceful electric power interface, microcontroller, " starting test to trigger " button of trigger end, relay control unit, level detection unit, copy control device communication interface, light current interface, light current interface protection unit, be connected on the sound light alarming circuit composition of the judgement output terminal of microcontroller in addition, 220V electric main is changed direct current and powers to testing circuit by described strong and weak electricity power conversion unit, 220V electric main is become pure 220V alternating current and is connected with forceful electric power interface through attenuator circuit by described buffer circuit, described light current interface is connected with emblem controller through light current interface protection unit, described level detection unit to be connected between light current interface and microcontroller and to be controlled by relay control unit, relay control unit is also connected with emblem controller output end, described control device communication interface of copying is connected with pure 220V alternating current interface through device of making a copy for, the control end of described sound light alarming circuit is connected with emblem controller output end, described " starting test to trigger " button is connected with microcontroller.Be testing circuit in the large square frame of black in Fig. 1, described light current interface is 12 needle interfaces, forceful electric power interface is 8 needle interfaces.Be single-phase carrier module in dotted line frame, the concrete model adopting Jinzhou Tuoxin Power & Electronics Co., Ltd. to produce is the single-phase carrier module of " znmkjcy-9981 ".
As shown in Figure 3, this intelligent meter single-phase carrier module checkout equipment
weakelectrical interface and corresponding relation are in table 1.
As shown in Figure 4, described carrier module carrier wave coupling interface and corresponding relation are in table 2.As shown in Figure 3, described each detection is pressed " starting test to trigger ", and button detects once, approximately needs 8 seconds.
The single-phase carrier module checkout equipment of the intelligent meter that the present invention relates to and detection method
,main-process stream is as follows:
1) start to detect, each detection is pressed " starting test to trigger ", and button detects once, approximately needs 8 seconds.
2) 12V relay adhesive, the adhesive of live wire relay, the adhesive of zero line relay.
3) level detection flow process is entered, if successfully proceed step 4), if unsuccessfully go to step 5).
4) entry communication and consumption detection flow process, if successfully enter step 5), if unsuccessfully go to step 5).
5) show net result (success or failed pilot lamp bright) and test failure item pilot lamp bright.
6) 12V relay disconnects, live wire relay disconnects, zero line relay disconnects.
As shown in Figure 5, concrete steps are as follows:
1, press " start to detect and trigger " button to start to detect, microcontroller is by relay control unit (MCU) adhesive, and level detection unit sends sense command to light current interface, carries out detection level, sends to MCU to judge weak electric signal by testing circuit; Order is simultaneously copied control device communication interface (I/O) RS232 and is sent instruction to check meter test to copying control device, judged to copying control device communication interface to MCU through attenuator circuit, pure 220V alternating current interface acquisition module high-pressure side information by forceful electric power interface, MCU sends to controlled by sound and light unit and judges order again.A circulation terminates, and relay cuts off automatically;
2,
light current interface level detects
As shown in Figure 6, after light current interface receives sense command, the VDD-15 interface voltage of carrier module 5V is extracted; Simultaneously to VCC-19, the 20 interface voltages extractions of 12V, be qualified in 5V ± 5% scope by MCU criterion voltage " 5V ", otherwise defective; Criterion voltage " 12V " is qualified at 12V-15V, otherwise defective;
Through MCU, the EVENOUT level extracting carrier module interface is judged as that low level is qualified, otherwise defective; Through MCU, the SET level extracting carrier module 14 interface is judged as that low level is qualified, otherwise defective; Through MCU, the SET level extracting carrier module 12 interface is judged as that low level is qualified, otherwise defective;
3, communication and consumption detection
As shown in Figure 7, step is as follows:
1) MCU issues order of checking meter to copying control device by 232 serial ports;
2) MCU detects the sending power consumption of single-phase carrier module, if power consumption is at below 2.5w, qualified, proceed step 3), otherwise flow process terminates, power consumption test is defective;
3) MCU judges whether to receive acknowledgement frame, and resolves, if correct, flow process terminates, communication and power consumption test qualified, otherwise proceed step 4);
4) copy reading Ci Shuo≤twice, then flow process terminates, communication and power consumption test qualified, otherwise go to step 1).
The invention discloses a kind of checkout equipment and the detection method that detect intelligent meter carrier module, described method is that module checkout equipment is modeled to intelligent meter and micro computer, by attenuation network the carrier signal of main and subordinate node decayed after (76dB) and carry out receiving demodulation, simulated field line of electric force, to the decay of carrier signal, detects the transmitting-receiving performance of carrier wave.This module checkout equipment is made up of buffer circuit, attenuator circuit, feed circuit, level detection unit, microcontroller (MCU) etc., according to each Parameters variation, automatic detection, comprise 12V voltage, carrier communication ability, module light current pin level state, quiescent dissipation, dynamic power consumption etc., for dissimilar mistake, provide audible alarm and by pilot lamp indication fault point.Site problems is converted into the soluble problem of office by the method, greatly reduces the workload of power supply enterprise low pressure field check personnel, can significantly cut down expenses while index promotes.For the fault handling of power supply enterprise's intelligent electric meter provides technical support.
Single-phase carrier module automatic detection device is simple to operate, only needs carrier module to be installed to testing apparatus, then presses and retests button startup testing process.Test and rear audible alarm has been had to problematic carrier module, and pilot lamp instruction.The test duration of every carrier module is 8 seconds.
Table 1 automatic checkout equipment and communication module light current interface pin defined declaration
Table 2
Claims (2)
1. intelligent meter individual event carrier module checkout equipment, is characterized in that: by the buffer circuit of strong and weak electricity current conversion unit, AC power, pure 220V alternating current interface, attenuator circuit, testing circuit, described testing circuit comprises forceful electric power interface, microcontroller, " starting test to trigger " button of trigger end, relay control unit, level detection unit, copy control device communication interface, light current interface, light current interface protection unit, be connected on the sound light alarming circuit composition of the judgement output terminal of microcontroller in addition, 220V electric main is changed direct current and powers to testing circuit by described strong and weak electricity power conversion unit, 220V electric main is become pure 220V alternating current and is connected with forceful electric power interface through attenuator circuit by described buffer circuit, described light current interface is connected with emblem controller through light current interface protection unit, described level detection unit to be connected between light current interface and microcontroller and to be controlled by relay control unit, relay control unit is also connected with emblem controller output end, described control device communication interface of copying is connected with pure 220V alternating current interface through device of making a copy for, the control end of described sound light alarming circuit is connected with emblem controller output end, described " starting test to trigger " button is connected with microcontroller.
2. intelligent meter individual event carrier module checkout equipment and detection method
,it is characterized in that: step is as follows:
1) press " start to detect and trigger " button to start to detect, microcontroller is by relay control unit (MCU) adhesive, and level detection unit sends sense command to light current interface, carries out detection level, sends to MCU to judge weak electric signal by testing circuit; Order is simultaneously copied control device communication interface (I/O) RS232 and is sent instruction to check meter test to copying control device, judged to copying control device communication interface to MCU through attenuator circuit, pure 220V alternating current interface acquisition module high-pressure side information by forceful electric power interface, MCU sends to controlled by sound and light unit and judges order again; A circulation terminates, and relay cuts off automatically;
2) light current interface level detects
After light current interface receives sense command, the VDD-15 interface voltage of carrier module 5V is extracted; Simultaneously to VCC-19, the 20 interface voltages extractions of 12V, be qualified in 5V ± 5% scope by MCU criterion voltage " 5V ", otherwise defective; Criterion voltage " 12V " is qualified at 12V-15V, otherwise defective;
Through MCU, the EVENOUT level extracting carrier module interface is judged as that low level is qualified, otherwise defective; Through MCU, the SET level extracting carrier module 14 interface is judged as that low level is qualified, otherwise defective; Through MCU, the SET level extracting carrier module 12 interface is judged as that low level is qualified, otherwise defective;
3)
,communication and consumption detection
?
A) MCU issues order of checking meter to copying control device by 232 serial ports;
B) MCU detects the sending power consumption of single-phase carrier module, if power consumption is at below 2.5w, qualified, proceed step c), otherwise flow process terminates, power consumption test is defective;
C) MCU judges whether to receive acknowledgement frame, and resolves, if correct, flow process terminates, communication and power consumption test qualified, otherwise proceed step 4);
D) copy reading Ci Shuo≤twice, then flow process terminates, communication and power consumption test qualified, otherwise go to step 1).
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| CN108181555A (en) * | 2017-12-13 | 2018-06-19 | 宁波德晶元科技有限公司 | A kind of mechanism for testing of carrier module |
| CN109039377A (en) * | 2018-08-10 | 2018-12-18 | 溧阳市华鹏电力仪表有限公司 | High speed power line carrier communication module and its working method, electric energy meter |
| CN109547063A (en) * | 2018-11-12 | 2019-03-29 | 国网天津市电力公司电力科学研究院 | A kind of carrier signal analysis method based on typical low pressure power line platform area |
| CN110324067A (en) * | 2019-07-31 | 2019-10-11 | 海南电网有限责任公司 | A kind of power line communication fault detection circuit and detection device |
| CN112485750A (en) * | 2020-11-09 | 2021-03-12 | 杭州西力智能科技股份有限公司 | Communication module interface testing method and system for intelligent electric meter |
| CN113890647A (en) * | 2021-09-09 | 2022-01-04 | 国网上海市电力公司 | Communication detection method and system for anti-theft data of electric energy meter |
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