CN102854485A - Automated adjustment system for comprehensive multi-parameter electrical measuring instrument and adjustment method - Google Patents

Automated adjustment system for comprehensive multi-parameter electrical measuring instrument and adjustment method Download PDF

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Publication number
CN102854485A
CN102854485A CN2012103715280A CN201210371528A CN102854485A CN 102854485 A CN102854485 A CN 102854485A CN 2012103715280 A CN2012103715280 A CN 2012103715280A CN 201210371528 A CN201210371528 A CN 201210371528A CN 102854485 A CN102854485 A CN 102854485A
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China
Prior art keywords
measuring instrument
tested
electric measuring
measured value
power source
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CN2012103715280A
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Chinese (zh)
Inventor
狄刚沙
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深圳市亚特尔科技有限公司
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Priority to CN2012103715280A priority Critical patent/CN102854485A/en
Publication of CN102854485A publication Critical patent/CN102854485A/en

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Abstract

The invention discloses an automated adjustment system for a comprehensive multi-parameter electrical measuring instrument and an adjustment method. The system comprises an upper computer and a harmonic power source; a multifunctional standard meter is arranged in the harmonic power source, the harmonic power source is connected with every multi-parameter electrical measuring instrument to be detected, and every multi-parameter electrical measuring instrument to be detected is tested by the harmonic power source through various output testing signals in different states; the upper computer is respectively connected with the harmonic power source and every multi-parameter electrical measuring instrument to be detected and is used for transmitting an electrical measurement value measured by the multifunctional standard meter into every multi-parameter electrical measuring instrument to be detected, and the measured value of every electrical measuring instrument to be detected is adjusted according to the electrical measurement value; and the upper computer is also used for reading the electrical measurement value of the harmonic multifunctional standard meter and the measured value of every multi-parameter electrical measuring instrument to be detected, calculating an error value between the electrical measurement value and the measured value, and generating a detection report. The system has the advantages of high efficiency of debugging and verification and high accuracy of calibration; no artificial error can be caused; and the labor burden of enterprises can be eased.

Description

A kind of robotization adjustment system and adjusting process of comprehensive multiparameter electric measuring instrument
Technical field
The present invention relates to the electric instrument field, relate in particular to a kind of robotization adjustment system and adjusting process of comprehensive multiparameter electric measuring instrument.
Background technology
In industries such as current power and petrochemical industry, comprehensive multiparameter electrical measuring instrument is used more and more extensive, integrated measurement phase voltage in an instrument, line voltage, electric current, zero-sequence current, applied power, active power, reactive power, power factor, numerous measurement functions such as frequency, have the comparatively high-end functions such as frequency analysis, can also the Connection Mode of instrument be arranged, can be made as phase three-wire three or three-phase and four-line pattern, also has remote signalling, the functions such as remote control, bring great convenience to the user, but calibration and detection for this instrument have proposed very large challenge, and it is a lot of to be mainly manifested in the project and the test point that need calibration and detect.
Calibration and detection to this instrument, traditional way is the output mode that power source manually is set, up voltage, rise electric current, power factor etc. is set and according to the measured value of the standard scale of power source inside its output valve is carried out manual adjustments, reach output be set require after, the tested table of manual operation is calibrated, after finishing the calibration of a test point, carry out the calibration of next test point.Also can save the time of using power source manually repeatedly to regulate in the Application standard source, but the standard source price comparison is expensive.On the whole, manual calibration is wasted time and energy, and the situation that the human operational error occurs easily or leak some point of school.
The inspection table is the most widely used automatically is electric energy meter checking device for instrument industry, its theory diagram as shown in Figure 1, that the electrical energy pulse of standard scale 20 is delivered to the first electric energy meter 51, the second electric energy meter 52 ... n the epi-positions such as n electric energy meter 5n, Error Calculator (the first corresponding Error Calculator 41 by each epi-position, the second Error Calculator 42 ... n Error Calculator 4n) calculates the error of the electric energy meter of tested table according to the ratio of the electric pulse of standard scale electrical energy pulse and tested table, but it can't be changed the calibration factor of each electric energy meter inside, also can't show the test error of other project.So more can't be used for debugging and the calibration of comprehensive multiparameter electric measuring instrument.
Summary of the invention
The object of the invention is to according to the debugging calibration process of present comprehensive multiparameter electric measuring instrument existence complicated, it is larger to drop into manpower and materials, efficient is not high, having the people is the more present situation of mistakes and omissions situation, for the manufacturer of comprehensive multiparameter electric measuring instrument and terminal user provide a kind of can the disposable robotization adjustment system that the polylith instrument is carried out automated debug and check.
For achieving the above object, the robotization adjustment system of described comprehensive multiparameter electric measuring instrument is characterized in, described adjustment system comprises host computer and harmonic power source; Wherein,
The inside in described harmonic power source has be used to the Multi-functional standard table of measuring various electrical measured value, described harmonic power source is electrically connected with each tested multiparameter electric measuring instrument, and this harmonic power source utilizes the various test signals of its output under different conditions each tested multiparameter electric measuring instrument to be tested;
Described host computer is connected with harmonic power source and each tested multiparameter electric measuring instrument communication respectively, the electrical measured value that this host computer records described Multi-functional standard table transfer to each tested multiparameter electric measuring instrument in, each tested electric measuring instrument is adjusted the measured value of self according to the electrical measured value that receives;
After described host computer reads the measured value of the electrical measured value of the Multi-functional standard table in the described harmonic power source and each tested multiparameter electric measuring instrument, calculate the error amount between the electrical measured value of the measured value of each tested multiparameter electric measuring instrument and the Multi-functional standard table in the harmonic power source, and generate examining report according to this error amount.
Preferably, carrying out communication by RS-232 interface between described host computer and the harmonic power source is connected.
Preferably, carrying out communication by the RS-485 interface between described host computer and each tested multiparameter electric measuring instrument is connected.
Another object of the present invention is to provide the automatic calibrating method of the robotization adjusting process of described comprehensive multiparameter electric measuring instrument to comprise:
Described host computer is set to corresponding align mode according to each tested multiparameter electric measuring instrument of automatic calibration flow process;
Described host computer is exported various test signals according to described automatic calibration flow process control harmonic power source to each described tested multiparameter electric measuring instrument, under different conditions each tested multiparameter electric measuring instrument is tested;
Described host computer reads the electrical measured value of the Multi-functional standard table in the harmonic power source;
The electrical measured value that described host computer records described Multi-functional standard table transfers in each tested multiparameter electric measuring instrument; And,
Each tested electric measuring instrument is adjusted the measured value of self according to the electrical measured value that receives, and finishes calibration operation.
The self-verifying method of the robotization adjusting process of described comprehensive multiparameter electric measuring instrument comprises:
Described host computer is exported various test signals according to automatic Verification flow process control harmonic power source to each described tested multiparameter electric measuring instrument, under different conditions each tested multiparameter electric measuring instrument is tested;
Described host computer reads the electrical measured value of the Multi-functional standard table in the harmonic power source;
Described host computer reads the measured value of each tested multiparameter electric measuring instrument behind the stable output of harmonic power source, and calculate error amount between the electrical measured value of the measured value of each tested multiparameter electric measuring instrument and the Multi-functional standard table in the harmonic power source, deposit in the corresponding database; And,
Described host computer generates examining report according to this error amount, and the defective item in the report can obviously indicate with red font.
Beneficial effect of the present invention is that the debugging of the robotization adjustment system of described comprehensive multiparameter electric measuring instrument and power of tests rate are high, the alternative repeatedly manual button of an instruction of host computer, and operating speed is fast, and the quantity of a calibration increases greatly; The precision of calibration is high, the truncation error that Multi-functional standard table data do not exist artificial input to cause; The mistake of the process of calibration can elimination as omitting the problem such as check point; Substitute the people with machine, alleviate the manpower burden of enterprise.
Description of drawings
Fig. 1 shows the functional-block diagram of adjustment electric energy meter in the prior art.
Fig. 2 shows the functional-block diagram of the robotization adjustment system of comprehensive multiparameter electric measuring instrument of the present invention.
Fig. 3 shows the process flow diagram of the automatic calibrating method of comprehensive multiparameter electric measuring instrument of the present invention.
Fig. 4 shows the process flow diagram of the self-verifying method of comprehensive multiparameter electric measuring instrument of the present invention.
Embodiment
The present invention will be further described below in conjunction with accompanying drawing.
Fig. 2 shows the functional-block diagram of the robotization adjustment system of comprehensive multiparameter electric measuring instrument of the present invention, and as shown in Figure 2, the robotization adjustment system of described comprehensive multiparameter electric measuring instrument comprises host computer 10 and harmonic power source 30.
Wherein, the inside in described harmonic power source 30 has be used to the Multi-functional standard table of measuring various electrical measured value, described harmonic power source 30 and each tested multiparameter electric measuring instrument (the first multiparameter electric measuring instrument 71, the second multiparameter electric measuring instrument 72 ..., n multiparameter electric measuring instrument 7n) be electrically connected, this harmonic power source 30 utilizes the various test signals of its output under different conditions each tested multiparameter electric measuring instrument to be tested.
Described host computer 10 is connected with harmonic power source 30 and each tested multiparameter electric measuring instrument communication respectively, especially, carrying out communication by RS-232 interface between described host computer 10 and the harmonic power source 30 is connected, carry out communication by the RS-485 interface between described host computer 10 and each tested multiparameter electric measuring instrument and be connected, adopting the advantage of RS-485 interface is to access simultaneously the tested multiparameter electric measuring instrument of polylith in same communication line.The electrical measured value that this host computer 10 records the Multi-functional standard table transfers in each tested multiparameter electric measuring instrument, and each tested electric measuring instrument is adjusted the measured value of self according to the electrical measured value that receives.
In addition, after described host computer 10 reads the measured value of the electrical measured value of the Multi-functional standard table in the described harmonic power source 30 and each tested multiparameter electric measuring instrument, error amount between the measured value that calculates each tested multiparameter electric measuring instruments by its inner error calculating module 60 and the electrical measured value of harmonic power source 30 interior Multi-functional standard tables, and according to this error amount generation examining report.
Fig. 3 shows the process flow diagram of the automatic calibrating method of comprehensive multiparameter electric measuring instrument of the present invention, and as shown in Figure 3, the automatic calibrating method in the robotization adjusting process of described comprehensive multiparameter electric measuring instrument comprises:
Host computer 10 is set to corresponding align mode S11 according to each tested multiparameter electric measuring instrument of automatic calibration flow process;
Described host computer 10 is exported various test signals by described automatic calibration flow process control harmonic power source 30 to each described tested multiparameter electric measuring instrument, so that each tested multiparameter electric measuring instrument is tested S12;
Described host computer 10 reads the electrical measured value S13 of the Multi-functional standard table in the described harmonic power source 30;
The electrical measured value that described host computer 10 records described Multi-functional standard table transfers to S14 in each tested multiparameter electric measuring instrument; And,
Each tested electric measuring instrument is adjusted the measured value of self according to the electrical measured value that receives, and finishes calibration operation S15.
Particularly, the calibration item of described tested multiparameter electric measuring instrument and order comprise:
1. each voltage gear all needs to carry out voltage school zero point, voltage school full scale (comprising phase three-wire three and three-phase and four-line);
2. the calibration of each electric current gear full scale;
3. the zero-sequence current of each electric current gear calibration;
4. three-phase and four-line active power power factor is 1 o'clock calibration;
5. three-phase and four-line active power power factor is 0 o'clock calibration;
6. three-phase and four-line reactive power power factor is 1 o'clock calibration;
7. three-phase and four-line reactive power power factor is 0 o'clock calibration;
8. phase three-wire three active power power factor is 1 o'clock calibration;
9. phase three-wire three active power power factor is 0 o'clock calibration;
10. phase three-wire three reactive power power factor is 1 o'clock calibration;
11. phase three-wire three reactive power power factor is 0 o'clock calibration;
12. the calibration to harmonic parameters;
13. the calibration to frequency measurement.
Fig. 4 shows the process flow diagram of the self-verifying method of comprehensive multiparameter electric measuring instrument of the present invention, and as shown in Figure 4, the self-verifying method in the robotization adjusting process of described comprehensive multiparameter electric measuring instrument comprises:
Described host computer 10 is exported various test signals according to automatic Verification flow process control harmonic power source 30 to each described tested multiparameter electric measuring instrument, under different conditions each tested multiparameter electric measuring instrument is tested S21;
Described host computer 10 reads the electrical measured value S22 of described harmonic power source 30 interior Multi-functional standard tables;
Described host computer 10 reads the measured value of each tested multiparameter electric measuring instrument behind 30 stable outputs of harmonic power source, and calculate error amount between the electrical measured value of the measured value of each tested multiparameter electric measuring instrument and the Multi-functional standard table in the harmonic power source by its inner error calculating module, deposit S23 in the corresponding database in; And,
Described host computer 10 generates examining report according to this error amount, and the defective item in the report can obviously indicate S24 with red font.
Particularly, the Interventions Requested of described tested multiparameter electric measuring instrument and comprising in turn:
1. the every measured value to voltage, electric current, active power carries out error testing under the meritorious pattern of phase three-wire three; Voltage and current divides multiple spot to change in proportion (a bit rear be the 80%-50% of last point value) aforementioned multiple parameters is carried out coverage test from greatest measurement to minimum measured value;
2. the basic range in tested multiparameter instrument carries out error testing to power factor impact, frequency influence under the meritorious pattern of phase three-wire three;
3. by the test point of similar step 1 every measured value of phase three-wire three reactive power is carried out error testing, carry out simultaneously the frequency influence error testing;
4. by under the meritorious pattern of similar step 1 pair three-phase and four-line every measured values such as voltage, electric current, power being carried out coverage test;
5. the basic range in tested multiparameter instrument under the meritorious pattern of three-phase and four-line is carried out error testing to power factor impact, frequency influence;
6. by the test point of similar step 1 every measured value of three-phase and four-line reactive power is carried out error testing, carry out simultaneously the frequency influence error testing;
7. host computer 10 compares according to every measured value of every that reads through communication command in the verification test process tested multiparameter electric measuring instrument and every measured value in harmonic power source 30, calculates every table in various parameter errors (as: active power, the reactive power when line voltage, phase voltage, electric current, zero-sequence current, frequency, three lines of each error point; Active power during four lines, reactive power, harmonic wave etc.), and generation is for the survey report of every table.
Only being in sum preferred embodiment of the present invention, is not to limit practical range of the present invention.Be that all equivalences of doing according to the content of the present patent application claim change and modification, all should belong to technology category of the present invention.

Claims (5)

1. the robotization adjustment system of a comprehensive multiparameter electric measuring instrument, it is characterized in that: described adjustment system comprises host computer and harmonic power source; Wherein,
The inside in described harmonic power source has be used to the Multi-functional standard table of measuring various electrical measured value, described harmonic power source is electrically connected with each tested multiparameter electric measuring instrument, and this harmonic power source utilizes the various test signals of its output under different conditions each tested multiparameter electric measuring instrument to be tested;
Described host computer is connected with harmonic power source and each tested multiparameter electric measuring instrument communication respectively, the electrical measured value that this host computer records described Multi-functional standard table transfer to each tested multiparameter electric measuring instrument in, each tested electric measuring instrument is adjusted the measured value of self according to the electrical measured value that receives;
After described host computer reads the measured value of the electrical measured value of the Multi-functional standard table in the described harmonic power source and each tested multiparameter electric measuring instrument, calculate the error amount between the electrical measured value of the measured value of each tested multiparameter electric measuring instrument and the Multi-functional standard table in the harmonic power source, and generate examining report according to this error amount.
2. the robotization adjustment system of comprehensive multiparameter electric measuring instrument according to claim 1 is characterized in that: carry out communication by RS-232 interface between described host computer and the harmonic power source and be connected.
3. the robotization adjustment system of comprehensive multiparameter electric measuring instrument according to claim 1 is characterized in that: carry out communication by the RS-485 interface between described host computer and each tested multiparameter electric measuring instrument and be connected.
4. the robotization adjusting process of the described comprehensive multiparameter electric measuring instrument of any one in 3 according to claim 1, it is characterized in that: its automatic calibrating method comprises:
Described host computer is set to corresponding align mode according to each tested multiparameter electric measuring instrument of automatic calibration flow process;
Described host computer is exported various test signals according to described automatic calibration flow process control harmonic power source to each described tested multiparameter electric measuring instrument, under different conditions each tested multiparameter electric measuring instrument is tested;
Described host computer reads the electrical measured value of the Multi-functional standard table in the harmonic power source;
The electrical measured value that described host computer records described Multi-functional standard table transfers in each tested multiparameter electric measuring instrument; And,
Each tested electric measuring instrument is adjusted the measured value of self according to the electrical measured value that receives, and finishes calibration operation.
5. the robotization adjusting process of the described comprehensive multiparameter electric measuring instrument of any one in 3 according to claim 1, it is characterized in that: its self-verifying method comprises:
Described host computer is exported various test signals according to automatic Verification flow process control harmonic power source to each described tested multiparameter electric measuring instrument, under different conditions each tested multiparameter electric measuring instrument is tested;
Described host computer reads the electrical measured value of the Multi-functional standard table in the harmonic power source;
Described host computer reads the measured value of each tested multiparameter electric measuring instrument behind the stable output of harmonic power source, and calculate error amount between the electrical measured value of the measured value of each tested multiparameter electric measuring instrument and the Multi-functional standard table in the harmonic power source, deposit in the corresponding database; And,
Described host computer generates examining report according to this error amount, and the defective item in the report can obviously indicate with red font.
CN2012103715280A 2012-09-29 2012-09-29 Automated adjustment system for comprehensive multi-parameter electrical measuring instrument and adjustment method CN102854485A (en)

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* Cited by examiner, † Cited by third party
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