CN105785301A - Rotary direct-current electric field sensor automatic calibration system - Google Patents
Rotary direct-current electric field sensor automatic calibration system Download PDFInfo
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- CN105785301A CN105785301A CN201610200945.7A CN201610200945A CN105785301A CN 105785301 A CN105785301 A CN 105785301A CN 201610200945 A CN201610200945 A CN 201610200945A CN 105785301 A CN105785301 A CN 105785301A
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- 230000005684 electric field Effects 0.000 title claims abstract description 97
- 239000002184 metal Substances 0.000 claims description 26
- 238000002955 isolation Methods 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- NHDHVHZZCFYRSB-UHFFFAOYSA-N pyriproxyfen Chemical compound C=1C=CC=NC=1OC(C)COC(C=C1)=CC=C1OC1=CC=CC=C1 NHDHVHZZCFYRSB-UHFFFAOYSA-N 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/005—Calibrating; Standards or reference devices, e.g. voltage or resistance standards, "golden" references
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Abstract
The invention provides a rotary direct-current (DC) electric field sensor automatic calibration system. The system comprises an industrial personal computer, a programmable DC power supply, an electric field generation device, and a data acquisition card. The output end of the industrial personal computer is connected with the programmable DC power supply, and the industrial personal computer is used for controlling the output voltage of the programmable DC power supply. The output end of the programmable DC power supply is connected with the electric field generation device, and the programmable DC power supply is used for providing voltage for the electric field generation device. A rotary DC electric field sensor is fixed on the electric field generation device, and the electric field generation device is used for providing a uniform electric field for the rotary DC electric field sensor. The input end of the data acquisition card is connected with the output end of the rotary DC electric field sensor, the output end of the data acquisition card is connected with the industrial personal computer, and the the data acquisition card is used for transferring the output signals of the rotary DC electric field sensor to the industrial personal computer. Through the technical field provided by the invention, automatic calibration of the rotary DC electric field sensor is realized, the efficiency of rotary electric field sensor calibration is improved greatly, the time for calibration is shortened, and the calibration precision is improved.
Description
Technical field
The present invention relates to a kind of calibration system, in particular to a kind of rotary DC electric field automatic calibration of sensor system.
Background technology
Along with the mushroom development of UHV Transmission Engineering, the electromagnetic environment problem of transmission line of electricity periphery attracts people's attention day by day.Under increasingly strict Environmental Protection Situation, the electromagnetic environment of transmission line of electricity affects one of the key factor of its application and development by becoming, and is circuit design and the key technical problem that must take in running.Electric field intensity is an important parameter of electromagnetic environment, and rotary DC electric field sensor is widely used in the measurement of electric field intensity.
Electric-field sensor needs to be calibrated before use, traditional calibration steps is performed manually by operation by calibration personnel, generally at least need two calibration personnel: wherein a people is responsible for changing electric field generating apparatus electric pressure, another people is responsible for the output signal of record electric-field sensor, after recording multiple (being typically greater than 5) test point, data are carried out linear fit to draw the linear relationship of electric-field sensor and standard electric field, complete calibration.By describing it can be seen that existing calibration steps has the disadvantage in that
First, operation multiplicity is high, efficiency is low: manually change voltage due to calibration personnel, inefficient, when electric-field sensor quantity is more, workload is bigger；
Second, error is big: the electric pressure of electric field generating apparatus and the output signal of electric-field sensor are all artificial reading and record data, will necessarily introduce error.
Summary of the invention
In order to solve the problems referred to above existing in prior art, the present invention provides a kind of rotary DC electric field automatic calibration of sensor system.
Present invention provide the technical scheme that a kind of rotary DC electric field automatic calibration of sensor system, it thes improvement is that: described system includes:
Industrial computer: its outfan is connected with programmable DC power supply, for controlling the output voltage of programmable DC power supply；
Programmable DC power supply: its outfan is connected with electric field generating apparatus, for providing voltage to electric field generating apparatus；
Electric field generating apparatus: be fixed with rotary DC electric field sensor on it, for providing uniform electric field for rotary DC electric field sensor；
Data collecting card: its input is connected with the outfan of rotary DC electric field sensor, and its outfan is connected with industrial computer, for passing to industrial computer by the output signal of rotary DC electric field sensor.
Preferably, described industrial computer has instrument controlling function and data acquisition function, and described instrument controlling function and data acquisition function pass through virtual instrument technology；Described industrial computer is connected with the control port of described programmable DC power supply by gpib bus, is used for sending instrument controlling order to described programmable DC power supply so that it is export corresponding voltage U1 according to control command；Described industrial computer is connected with described data collecting card also by usb bus, for obtaining the output voltage U2 of the rotary DC electric field sensor that described data collecting card collects.
Preferably, described electric field generating apparatus includes two pieces of metal polar plates that are separated from one another and that be parallel to each other, and one of metal polar plate is connected with the output cathode of described programmable DC power supply, and another block metal polar plate is connected with the output negative pole of described programmable DC power supply.
Further, two pieces of metal polar plates support isolation by vertically disposed insulation column therebetween.
Further, and leaving through hole in the middle part of the metal polar plate that the output negative pole of described programmable DC power supply is connected, rotary DC electric field sensor is fixed in described through hole.
Further, described industrial computer obtains calibration point data (E1, U2) respectively by software design patterns and data collecting card, and wherein E1 is the electric field intensity that electric field generating apparatus produces, and E1=U1/d, d is the distance between two pieces of metal polar plates of electric field generating apparatus；After industrial computer obtains all calibration points, by software, electric field intensity E1 and rotary DC electric field sensor output voltage U2 is carried out data fitting, to draw and to store the calibration result of described rotary DC electric field sensor.
Further, described calibration result includes cant beam K, intercept b and the coefficient of determination R of fitting a straight line2；Described industrial computer is by the cant beam K, intercept b of described fitting a straight line and coefficient of determination R2Obtain the linear relationship between electric field intensity E1 and rotary DC electric field sensor output voltage U1.
Further, the software on described industrial computer uses LabVIEW or LabWindows/CVI programming realization.
Compared with immediate prior art, the present invention has following marked improvement:
Technical scheme provided by the invention controls programmable DC power supply by industrial computer, automatically change and be applied to voltage on electric field generating apparatus two metal polar plate, by data collecting card by the output voltage signal collection of rotary DC electric field sensor to industrial computer, software finally by industrial computer carries out data process, obtain the calibration data of rotary DC electric field sensor, achieve the automatic calibration of rotary DC electric field sensor, substantially increase the calibration efficiency of rotary electric field sensor, shorten the calibration time and improve calibration accuracy, solve workload in current electric-field sensor calibration process big, consuming time for a long time, repetitive operation is many, the problems such as efficiency is low.
Accompanying drawing explanation
Fig. 1 is the structural representation of rotary DC electric field automatic calibration of sensor system provided by the invention；
Fig. 2 is the automatic Verification method flow diagram of rotary DC electric field sensor；
Wherein metal polar plate on 1-, metal polar plate under 2-；The rotary DC electric field sensor of 3-.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
In order to thoroughly understand the embodiment of the present invention, detailed structure will be proposed in following description.Obviously, the execution of the embodiment of the present invention is not limited to the specific details that those skilled in the art has the knack of.Presently preferred embodiments of the present invention is described in detail as follows, but except these detailed descriptions, the present invention can also have other embodiments.
Rotary DC electric field automatic calibration of sensor system provided by the invention is as it is shown in figure 1, calibration system includes industrial computer, programmable DC power supply, electric field generating apparatus and data collecting card.
Electric field generating apparatus includes two pieces of metal polar plates that are separated from one another and that be parallel to each other, and one of metal polar plate is connected with the output cathode of programmable DC power supply, and another block metal polar plate is connected with the output negative pole of programmable DC power supply.
Upper and lower two pieces of metal polar plates support isolation by vertically disposed insulation column therebetween, for instance support isolation by nylon column.With leave through hole in the middle part of the metal polar plate that the output negative pole of programmable DC power supply is connected, rotary DC electric field sensor 3 is fixed in through hole, and is screwed.Uniform electric field can be produced after two pieces of metal polar plate pressurizations of electric field generating apparatus.
The output cathode of programmable DC power supply connects the upper metal polar plate 1 of electric field generating apparatus, output negative pole connects the lower metal polar plate 2 of electric field generating apparatus, programmable DC power supply is connected by GPIB (versabus) with industrial computer, and the instrument controlling order that industrial computer sends can change mode of operation or the output voltage size of programmable DC power supply.After industrial computer is finished writing corresponding control software design, just can automatically change the output voltage size of programmable DC power supply.So, calibration personnel, without manually changing electric field generating apparatus polar plate voltage one by one, is greatly improved calibration efficiency.
Above-mentioned programmable DC power mode should be set to CV (ConstantVotage determines voltage) pattern.
Industrial computer is the core of whole calibration system, and it is had instrument controlling and data acquisition function, instrument controlling and data acquisition function and is all realized by virtual instrument technique (VirtualInstrument).Before calibration, calibration personnel configuring in the software of industrial computer 1, after starting calibration, industrial computer just sends instrument controlling order to programmable DC power supply 2, makes electric power output voltage U1, thus, between two metal polar plates of electric field generating apparatus, generation is sized to E1=U1The electric field intensity of/d；Rotary DC electric field sensor is at field intensity E1Lower to generation output U2, data collecting card after U2 digitized, will be transmitted to industrial computer by USB (USB (universal serial bus)), so far complete a calibration point data (E1, U2) acquisition, when obtaining after all calibration points, the software in industrial computer will to field intensity E1Export U2 with electric-field sensor and carry out data fitting, obtain the slope k of fitting a straight line, intercept b and coefficient of determination R2.Software on industrial computer 1 uses LabVIEW or LabWindows/CVI programming realization, and this is not limiting as by the present invention.
Software arrangements in industrial computer at least include input sensor 's number to be calibrated and arrange calibration voltage count, scope and increment.
Owing to calibration data adopts industrial computer directly to obtain, it is not necessary to calibration personnel record, therefore eliminate the error that artificial reading introduces, substantially increase calibration accuracy rate.
Fig. 2 is the rotary DC electric field automatic calibration of sensor method utilizing rotary DC electric field automatic calibration of sensor system provided by the invention to realize, and the method includes:
Step S10, electric-field sensor is placed in electric field generating apparatus and fixes, programmable DC power supply output cathode is connect the upper metal polar plate of electric field generating apparatus, negative pole is connect the lower metal polar plate of electric field generating apparatus and is connected by gpib bus and industrial computer, rotary DC electric field sensor output signal connects data collecting card, data collecting card is connected with industrial computer by usb bus, and all devices powers on；
Step S20, opens the calibration software on industrial computer, carries out software arrangements；
Step S30, starts industrial computer, starts calibration automatically；
Step S40, calibration terminates, and is calibrated result, including slope, intercept, three parameters of coefficient of determination, obtains the linear relationship between field intensity and sensor output signal.
Step S50, writes calibration result in the data base of industrial computer and stores.
Finally should be noted that: above example is only in order to illustrate that technical scheme is not intended to limit; although the present invention being described in detail with reference to above-described embodiment; the specific embodiment of the present invention still can be modified or equivalent replacement by those of ordinary skill in the field; these are without departing from any amendment of spirit and scope of the invention or equivalent replace, all within the claims that application is awaited the reply.
Claims (8)
1. a rotary DC electric field automatic calibration of sensor system, it is characterised in that: described system includes:
Industrial computer: its outfan is connected with programmable DC power supply, for controlling the output voltage of programmable DC power supply；
Programmable DC power supply: its outfan is connected with electric field generating apparatus, for providing voltage to electric field generating apparatus；
Electric field generating apparatus: be fixed with rotary DC electric field sensor on it, for providing uniform electric field for rotary DC electric field sensor；
Data collecting card: its input is connected with the outfan of rotary DC electric field sensor, and its outfan is connected with industrial computer, for passing to industrial computer by the output signal of rotary DC electric field sensor.
2. automated calibration system according to claim 1, it is characterised in that:
Described industrial computer has instrument controlling function and data acquisition function, and described instrument controlling function and data acquisition function pass through virtual instrument technology；Described industrial computer is connected with the control port of described programmable DC power supply by gpib bus, is used for sending instrument controlling order to described programmable DC power supply so that it is export corresponding voltage U1 according to control command；Described industrial computer is connected with described data collecting card also by usb bus, for obtaining the output voltage U2 of the rotary DC electric field sensor that described data collecting card collects.
3. automated calibration system according to claim 1, it is characterised in that:
Described electric field generating apparatus includes two pieces of metal polar plates that are separated from one another and that be parallel to each other, and one of metal polar plate is connected with the output cathode of described programmable DC power supply, and another block metal polar plate is connected with the output negative pole of described programmable DC power supply.
4. automated calibration system according to claim 3, it is characterised in that:
Two pieces of metal polar plates support isolation by vertically disposed insulation column therebetween.
5. automated calibration system according to claim 3, it is characterised in that:
With leave through hole in the middle part of the metal polar plate that the output negative pole of described programmable DC power supply is connected, rotary DC electric field sensor is fixed in described through hole.
6. automated calibration system according to claim 2, it is characterised in that:
Described industrial computer obtains calibration point data (E1, U2) respectively by software design patterns and data collecting card, and wherein E1 is the electric field intensity that electric field generating apparatus produces, and E1=U1/d, d is the distance between two pieces of metal polar plates of electric field generating apparatus；After industrial computer obtains all calibration points, by software, electric field intensity E1 and rotary DC electric field sensor output voltage U2 is carried out data fitting, to draw and to store the calibration result of described rotary DC electric field sensor.
7. automated calibration system according to claim 6, it is characterised in that:
Described calibration result includes cant beam K, intercept b and the coefficient of determination R of fitting a straight line2；Described industrial computer is by the cant beam K, intercept b of described fitting a straight line and coefficient of determination R2Obtain the linear relationship between electric field intensity E1 and rotary DC electric field sensor output voltage U1.
8. automated calibration system according to claim 6, it is characterised in that:
Software on described industrial computer uses LabVIEW or LabWindows/CVI programming realization.
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| CN201610200945.7A CN105785301A (en) | 2016-03-31 | 2016-03-31 | Rotary direct-current electric field sensor automatic calibration system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106483485A (en) * | 2016-11-03 | 2017-03-08 | 北京无线电计量测试研究所 | A kind of high strength field sensor calibrating method and system |
| CN106772177A (en) * | 2016-12-09 | 2017-05-31 | 北京无线电计量测试研究所 | A kind of emf sensor calibration system based on reverberation chamber and transmission probe |
| CN107290702A (en) * | 2017-07-26 | 2017-10-24 | 中国电力科学研究院 | A kind of three-dimensional AC electric field sensor calibrating installation and method |
| CN108061870A (en) * | 2018-02-11 | 2018-05-22 | 中国科学院电子学研究所 | Electric-field sensor calibration system |
| CN108344962A (en) * | 2017-11-21 | 2018-07-31 | 中国电力科学研究院有限公司 | A kind of calibration system and its scaling method of the field mill not being capped metallic plate |
| CN109298364A (en) * | 2018-11-01 | 2019-02-01 | 北京东方计量测试研究所 | A kind of improved static electric field instrument calibration system and method |
| CN109298363A (en) * | 2018-11-01 | 2019-02-01 | 北京东方计量测试研究所 | A kind of Three-dimensional static electric field instrument calibrating installation |
| CN113030826A (en) * | 2021-03-11 | 2021-06-25 | 中国海洋大学 | Ocean electric field sensor performance detection method and system based on distortion rate |
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| JPH11304863A (en) * | 1998-04-16 | 1999-11-05 | Kasuga Electric Works Ltd | Measuring method and device for static field of powder and grain |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106483485A (en) * | 2016-11-03 | 2017-03-08 | 北京无线电计量测试研究所 | A kind of high strength field sensor calibrating method and system |
| CN106483485B (en) * | 2016-11-03 | 2019-04-30 | 北京无线电计量测试研究所 | A kind of high strength field sensor calibrating method |
| CN106772177B (en) * | 2016-12-09 | 2019-05-17 | 北京无线电计量测试研究所 | A kind of emf sensor calibration system based on reverberation chamber and transmitting probe |
| CN106772177A (en) * | 2016-12-09 | 2017-05-31 | 北京无线电计量测试研究所 | A kind of emf sensor calibration system based on reverberation chamber and transmission probe |
| CN107290702A (en) * | 2017-07-26 | 2017-10-24 | 中国电力科学研究院 | A kind of three-dimensional AC electric field sensor calibrating installation and method |
| CN107290702B (en) * | 2017-07-26 | 2024-01-19 | 中国电力科学研究院 | Three-dimensional alternating current electric field sensor calibration device and method |
| CN108344962A (en) * | 2017-11-21 | 2018-07-31 | 中国电力科学研究院有限公司 | A kind of calibration system and its scaling method of the field mill not being capped metallic plate |
| CN108344962B (en) * | 2017-11-21 | 2023-11-10 | 中国电力科学研究院有限公司 | Calibration system and calibration method of field mill without covering metal plate |
| CN108061870B (en) * | 2018-02-11 | 2020-06-09 | 中国科学院电子学研究所 | Electric field sensor calibration system |
| CN108061870A (en) * | 2018-02-11 | 2018-05-22 | 中国科学院电子学研究所 | Electric-field sensor calibration system |
| CN109298363A (en) * | 2018-11-01 | 2019-02-01 | 北京东方计量测试研究所 | A kind of Three-dimensional static electric field instrument calibrating installation |
| CN109298364B (en) * | 2018-11-01 | 2021-03-19 | 北京东方计量测试研究所 | Improved electrostatic field instrument calibration system and method |
| CN109298364A (en) * | 2018-11-01 | 2019-02-01 | 北京东方计量测试研究所 | A kind of improved static electric field instrument calibration system and method |
| CN113030826A (en) * | 2021-03-11 | 2021-06-25 | 中国海洋大学 | Ocean electric field sensor performance detection method and system based on distortion rate |
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Application publication date: 20160720 |