CN101702015B - Radio frequency electromagnetic field radiation immunity experiment test device and test method for electric energy meter - Google Patents
Radio frequency electromagnetic field radiation immunity experiment test device and test method for electric energy meter Download PDFInfo
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Abstract
本发明公开了一种电能表射频电磁场辐射抗扰度试验测试装置及测试方法，电能表检验装置、通信与显示装置、信号发生器、功率放大器和发射天线之间依次连接，主控制器与通信与显示装置连接。测试时，电能表检验装置给受试电能表提供工作所需的电压和电流信号并获得电能表误差值；信号发生器产生该试验标准要求的频率信号，该频率信号经功率放大器放大后发送给发射天线，由发射天线产生试验标准要求的均匀场；通信与显示装置按步骤分别与电能表检验装置和信号发生器进行通信，读取、记录并显示信号发生器中的频率信息和相对应的电能表检验装置中的电能表误差值信息。本发明可自动记录试验频率和相对应的电能表误差值，且使试验数据更全面、准确。
The invention discloses an electric energy meter radio frequency electromagnetic field radiation immunity test device and test method. The electric energy meter inspection device, communication and display device, signal generator, power amplifier and transmitting antenna are sequentially connected, and the main controller and communication Connect to display device. During the test, the watt-hour meter inspection device provides the required voltage and current signals to the tested watt-hour meter and obtains the error value of the watt-hour meter; the signal generator generates the frequency signal required by the test standard, and the frequency signal is amplified by the power amplifier and sent to the Transmitting antenna, the uniform field required by the test standard is generated by the transmitting antenna; the communication and display device communicates with the electric energy meter inspection device and the signal generator in steps, reads, records and displays the frequency information in the signal generator and the corresponding The error value information of the electric energy meter in the electric energy meter inspection device. The invention can automatically record the test frequency and the corresponding error value of the electric energy meter, and make the test data more comprehensive and accurate.
Description
Technical field
The present invention relates to a kind of electric energy meter radio frequency electromagnetic field radiation immunity experiment test device.
Background technology
At present, known electric energy meter radio frequency electromagnetic field radiation immunity experiment test device is made up of calibrator for watt-hour meter, signal generator, power amplifier and emitting antenna.During test, calibrator for watt-hour meter is provided work required voltage and current signal to trying electric energy meter, and obtains the electric energy meter error value.Signal generator produces the 80MHz-2GHz frequency signal that this test standard requires, and after power amplifier amplifies, produces the uniform field that test standard requires by emitting antenna.But the electric energy meter standard-required will write down test frequency and corresponding electric energy meter error value in process of the test.General electric energy meter radio frequency electromagnetic field radiation immunity experiment test device can not write down these data automatically, can only manual record, have a strong impact on work efficiency.And Continuous Observation, record data are wanted in test, because factors such as people's kopiopia cause record data omission, mistake easily.
Summary of the invention
In order to overcome existing electric energy meter radio frequency electromagnetic field radiation immunity experiment test device can not write down test frequency and corresponding electric energy meter error value automatically in process of the test deficiency, the invention provides a kind of electric energy meter radio frequency electromagnetic field radiation immunity experiment test device, this device can not only carry out the electric energy meter radio frequency electromagnetic field radiation immunity experiment, and can write down test frequency and corresponding electric energy meter error value in process of the test automatically.
The technical solution adopted for the present invention to solve the technical problems is: this electric energy meter radio frequency electromagnetic field radiation immunity experiment test device comprises calibrator for watt-hour meter, signal generator, power amplifier, emitting antenna, communication and display device and master controller, be connected successively between described calibrator for watt-hour meter, communication and display device, signal generator, power amplifier and the emitting antenna, described master controller is connected with display device with communication.
Further, proving installation of the present invention also comprises the control operation device, and described control operation device is connected with master controller.
Further, proving installation of the present invention also comprises the test monitoring device, and described test monitoring device is connected with master controller.
Further, proving installation of the present invention also comprises the inquiry of historical data device, and described the inquiry of historical data device is connected with master controller.
Further, proving installation of the present invention also comprises the analysis calibration equipment, and described analysis calibration equipment is connected with master controller.
Electric energy meter radio frequency electromagnetic field radiation immunity experiment method of testing of the present invention is as follows:
In electric energy meter radio frequency electromagnetic field radiation immunity experiment process, calibrator for watt-hour meter is provided the required voltage and current signal of work and obtains the electric energy meter error value to trying electric energy meter;
In electric energy meter radio frequency electromagnetic field radiation immunity experiment process, signal generator produces the frequency signal that this test standard requires, and this frequency signal sends to emitting antenna after power amplifier amplifies, and produces the uniform field that test standard requires by emitting antenna;
In electric energy meter radio frequency electromagnetic field radiation immunity experiment process, communication communicates with calibrator for watt-hour meter and signal generator respectively according to the following steps with display device, read, write down and the shows signal generator in frequency information and the electric energy meter error value information in the corresponding calibrator for watt-hour meter:
Step 1: communication and display device are after the order of receiving the reading of data that master controller sends, the order of reading electric energy meter error Value Data and frequency data is write the corresponding serial ports of communicating by letter with display device respectively send function, communication sends to calibrator for watt-hour meter and signal generator with above-mentioned order of reading electric energy meter error Value Data and frequency data respectively accordingly with the corresponding serial ports transmission function of display device then;
Step 2: communication receives the electric energy meter error Value Data and the frequency data that return from calibrator for watt-hour meter and signal generator respectively with display device and receives fully up to a frame return data;
Step 3: communication is extracted and display frequency data and electric energy meter error Value Data according to corresponding data stipulations with display device;
Step 4: communication deposits frequency data and the electric energy meter error Value Data that is extracted in database with display device; Wait for the order of reading of data next time then.
Further, the order that control operation device of the present invention will be provided with the various parameters of calibrator for watt-hour meter sends to master controller, master controller receives this order and issues communication and display device, by communication and display device this order is sent to calibrator for watt-hour meter again.
Further, the order that test monitoring device of the present invention will read the various parameters of calibrator for watt-hour meter sends to master controller, master controller receives this order and issues communication and display device, and communication is read corresponding data and demonstration with display device from calibrator for watt-hour meter.
Further, the inquiry of historical data device of the present invention sends to master controller with the order of query history test figure, and master controller receives the order back and reads corresponding data and pass to the inquiry of historical data device to database and show and store.
Further, the present invention analyzes calibration equipment and will inquire about the order of the test figure that will analyze verification and issue master controller, master controller receives in the database of arriving after this order and reads corresponding data and send the analysis calibration equipment to, the data that read are analyzed verification and shows and stores analyzing check results by analyzing calibration equipment.
Principle of work of the present invention is: by the order of master controller timed sending reading of data, utilize communication and display device, communicate with calibrator for watt-hour meter and signal generator respectively, receive return data, extract and display frequency data and electric energy meter error Value Data according to the different pieces of information stipulations then, and depositing database in, these data can and be analyzed calibration equipment and call for the inquiry of historical data device.The inquiry of historical data device and analysis calibration equipment are realized record, inquiry and the analysis checking treatment to data such as test frequency and corresponding electric energy meter error values; Proving installation of the present invention also comprises control operation device and test monitoring device, and the control operation device is realized the control to calibrator for watt-hour meter; The test monitoring device is realized the monitoring to the calibrator for watt-hour meter trystate.
Compared with prior art, the invention has the beneficial effects as follows:
1. utilize communication and display device, communicate with calibrator for watt-hour meter and signal generator respectively, can when carrying out the electric energy meter radio frequency electromagnetic field radiation immunity experiment, write down test frequency and corresponding electric energy meter error value automatically.Can significantly reduce the testing crew workload, increase work efficiency, and the test figure of record is more comprehensive, more accurate.
2. the present invention also comprises master controller, control operation device, test monitoring device, the inquiry of historical data device and analyzes calibration equipment, can realize the effective monitoring to process of the test, to the inquiry and the analysis verification of test figure.
3. utilize the analysis calibration equipment that test findings is analyzed, it is qualified to judge whether, can significantly reduce the testing crew workload, improves the accuracy and the efficient of test findings judgment task.
Description of drawings
The present invention is further described below in conjunction with the drawings and specific embodiments.
Fig. 1 is the fundamental diagram of proving installation of the present invention.
Fig. 2 is the structured flowchart of proving installation of the present invention.
Fig. 3 is the communication and the principle of work block diagram of display device in the proving installation of the present invention.
Fig. 4 is the principle of work block diagram of master controller in the proving installation of the present invention.
Fig. 5 is the principle of work block diagram of control operation device in the proving installation of the present invention.
Fig. 6 is the principle of work block diagram of test monitoring device in the proving installation of the present invention.
Fig. 7 is the principle of work block diagram of the inquiry of historical data device in the proving installation of the present invention.
Fig. 8 is a principle of work block diagram of analyzing calibration equipment in the proving installation of the present invention.
Among the figure, 1. calibrator for watt-hour meter, 2. signal generator, 3. power amplifier, 4. emitting antenna, 5. electric energy meter, 6. communication and display device, 7. master controller, 8. control operation device, 9. test monitoring device, 10. the inquiry of historical data device, 11. analysis calibration equipment, 12. test site, the voltage port of 13. calibrator for watt-hour meter, the electric current port of 14. calibrator for watt-hour meter, 15. the pulse port of calibrator for watt-hour meter, 16. the voltage port of electric energy meter, the electric current port of 17. electric energy meters, the pulse port of 18. electric energy meters, 19. the communication port of calibrator for watt-hour meter, 20. the communication port of signal generator, the output port of 21. signal generators, the input port of 22. power amplifiers, 23. the output port of power amplifier, the input port of 24. emitting antennas.
Embodiment
As shown in Figure 1, when using apparatus of the present invention to carry out the electric energy meter radio frequency electromagnetic field radiation immunity experiment, be connected successively between calibrator for watt-hour meter 1, communication and display device 6, signal generator 2, power amplifier 3 and the emitting antenna 4; Calibrator for watt-hour meter 1 links to each other with electric energy meter 5; Communication links to each other with master controller 7 with display device 6; Master controller 7 links to each other with control operation device 8, test monitoring device 9, the inquiry of historical data device 10 and analysis calibration equipment 11 respectively.Test site 12 and testing table are arranged all and are required to carry out according to national standard.
As shown in Figure 2, the voltage port 13 of calibrator for watt-hour meter 1, electric current port 14, pulse port 15 link to each other with voltage port 16, electric current port 17, the pulse port 18 of electric energy meter 5 respectively.The output port 21 of signal generator 2 links to each other with the input port 22 of power amplifier 3.The output port 23 of power amplifier 3 links to each other with the input port 24 of emitting antenna 4.Communication links to each other with the communication port 19 of calibrator for watt-hour meter 1, the communication port 20 of signal generator 2 respectively with display module 6.Communication is connected with master controller 7 with display module 6, and control operation device 8, test monitoring device 9, the inquiry of historical data device 10 and analysis calibration equipment 11 are connected with master controller 7 respectively.
Calibrator for watt-hour meter 1 can be used the PTC-8320D type calibrator for watt-hour meter of Zhejiang Harnpu Power Technology Co., Ltd.; Signal generator 2 can be with the SML03 type signal generator of German RS company; Power amplifier 3 can be used the 500W1000A type power amplifier of U.S. AR company; Emitting antenna 4 can be with the HL046E type antenna of German RS company; Signal generator 2 and power amplifier 3 can be controlled with the EMC32 software of German RS company.
In communication and display device 6, two separate communication paths are arranged, be respectively applied for communication work with calibrator for watt-hour meter 1 and signal generator 2.The reading of data flow process all is to send the reading of data order earlier, receives return data then, extracts and video data according to the data stipulations again.As shown in Figure 3, when communication is worked with display device 6, at first receive the order of the reading of data that master controller 7 sends, communication writes one of them serial ports transmission function of communicating by letter with display device 6 with the order that display device 6 will read the electric energy meter error Value Data then, sends function by this serial ports then this reading of data order is sent to calibrator for watt-hour meter 1.Communication writes another serial ports transmission function of communicate by letter with display device 6 with display device 6 with the order of reading frequency data, by this serial ports transmission function this reading of data order is sent to signal generator 2 then.After the order of reading of data sent end, communication was waited for calibrator for watt-hour meter 1 and signal generator 2 return datas with display device 6.When communication and display device 6 receive respectively the electric energy meter error Value Data that returns from calibrator for watt-hour meter 1 and signal generator 2 and frequency data up to a frame return data fully after, extract and display frequency data and electric energy meter error Value Data according to the different pieces of information stipulations, and deposit database in.
Serial ports sends function in communication and display device 6, is used to receive and send the order of reading of data, receives and send the order that calibrator for watt-hour meter 1 various parameters are set.
When communication receives return data with display device 6, judge whether last byte is " Chr (10) ", receive fully if just show frame data.
Communication is taken out data with display device 6 according to the corresponding data stipulations, and flow process is as follows: what at first judge whether to receive is corresponding data, then with corresponding reading of data function extraction data and show.Such as on the communication path of reading frequency data, what just at first judge whether to receive is frequency data, just is confirmed to be with reading frequency data function extraction frequency data and shows; Really admit a fault and just continue to wait for.
As shown in Figure 4, after master controller 7 starts, at first carry out system initialization and upgrade various parameters, use Microsoft Access software to set up database, comprise parameters such as Business Name, electric energy meter title, frequency, testing time, electric energy meter error and test period in the database.There is a timer master controller 7 inside, and timer time can be set to 1s at interval the soonest.The inside of master controller 7 also has two communication modules, is responsible for respectively sending the order of reading electric energy meter error Value Data and reading frequency data to communication and display device 6.When timer is worked, master controller 7 just regularly calls to be responsible for sending the communication module that reads the electric energy meter error Value Data and to send an order of reading the electric energy meter error Value Data, regularly calls the order that the communication module of being responsible for sending the reading frequency data is sent reading frequency data simultaneously.
As shown in Figure 4, read the order of electric energy meter error Value Data and reading frequency data except sending with display device 6 to communication, master controller 7 also receives control operation device 8, test monitoring device 9, the inquiry of historical data device 10 and analyzes the related command that calibration equipment 11 is sent, and, send the corresponding command or directly read corresponding data to database by communication and display device 6 according to the form that the situation decision of specific instructions is handled.
As shown in Figure 5, control operation device 8 can be realized the control to the output informations such as voltage, electric current and phase place of calibrator for watt-hour meter 1 by communication and display device 6 and master controller 7.At first master controller 7 is issued in control operation device 8 the isoparametric order of voltage, electric current, phase place, epi-position and the number of turns that calibrator for watt-hour meter 1 will be set, master controller 7 is issued communication and display device 6 with these orders then, communication is at last issued calibrator for watt-hour meter 1 with display device 6 with these orders, calibrator for watt-hour meter 1 is according to the parameter values such as order setting voltage, electric current, phase place, epi-position and the number of turns of control operation device 8 thus, thereby realizes the effective control to the output informations such as voltage, electric current, phase place, epi-position and the number of turns of calibrator for watt-hour meter 1.
As shown in Figure 6; test monitoring device 9 is by communication and display device 6 and master controller 7; read the information such as voltage, electric current and phase place of calibrator for watt-hour meter 1 output and monitor, prevent to occur in the process of the test situation of the undesired change of output signal, protection test equipment and tried electric energy meter.At first master controller 7 is issued in test monitoring device 9 order that will read calibrator for watt-hour meter 1 voltage, electric current and phase parameter, master controller 7 is issued communication and display device 6 with these reading of data orders then, communication is at last issued calibrator for watt-hour meter 1 with display device 6 with these reading of data orders, after the order of reading of data sent end, communication was waited for return datas with display device 6.After communication and display device 6 receptions one frame return data are complete, extract and show the data of the various parameters of corresponding calibrator for watt-hour meter 1 according to the data stipulations.
As shown in Figure 7, the inquiry of historical data device 10 can be realized the inquiry to former test findings by master controller 7.At first master controller 7 is issued in the inquiry of historical data device 10 order of carrying out query composition according to different keywords that will set, and master controller 7 receives to read corresponding data in the database of arriving after the order and pass to the inquiry of historical data device 10 and shows and store.The cycle that historical data is preserved is set to 1 year, and the historical data that surpasses a year will be deleted.
As shown in Figure 8, analyze calibration equipment 11, can realize analysis verification test findings by master controller 7.At first to inquire about frequency data and the corresponding electric energy meter error Value Data of analyzing verification, master controller 7 is issued in the order of carrying out query composition according to different keywords of analyzing that calibration equipment 11 will set, master controller 7 receives and reads corresponding data in the database of arriving after the order and pass to and analyze calibration equipment 11,11 pairs of data that read of ultimate analysis calibration equipment are analyzed verification according to different conditions, and show and store analyzing check results.
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