CN105277908A - Three-axis current sensor signal calibration method - Google Patents
Three-axis current sensor signal calibration method Download PDFInfo
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- CN105277908A CN105277908A CN201510707895.7A CN201510707895A CN105277908A CN 105277908 A CN105277908 A CN 105277908A CN 201510707895 A CN201510707895 A CN 201510707895A CN 105277908 A CN105277908 A CN 105277908A
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000012546 transfer Methods 0.000 claims abstract description 11
- 238000001514 detection method Methods 0.000 claims abstract description 4
- 238000012545 processing Methods 0.000 claims description 5
- 206010011878 Deafness Diseases 0.000 claims description 3
- 238000012795 verification Methods 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract 1
- 230000007812 deficiency Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
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Abstract
The invention provides a three-axis current sensor signal calibration method. The method comprises the steps of 1) three-axis signal acquisition, 2) sensor verification and 3) transfer command or end instruction command. According to the step 1) a three-axis current sensor accesses A' phase, B' phase and C' phase of a three-phase high-voltage cable; the three-axis current sensor is started; and a differential acquisition method is used to acquire current signals which access A' phase, B' phase and C' phase of the three-phase high-voltage cable. According to the step 2), an A/D converter is used to process the current signals of the step 1); single-ended acquisition is used to acquire power supply voltage of A axis, B axis and C axis of the three-axis current sensor; a detection command is input through a host computer; and a sensor verification result is acquired. According to the step 3), the sensor verification result acquired in the step 2) is fed back to the host computer; data comparison is carried out; and a transfer command or an end command is selected through a comparison result. According to the calibration method, the operation is simple, and real-time data acquisition and transmission are realized, wherein the data comprise acquisition time, sensor number, data point number, three differential signals, six single-ended signals, power supply voltage signals and the like.
Description
Technical field
The invention belongs to sensor technical field, especially relate to a kind of three shaft current sensor signal methods of calibration.
Background technology
Along with the develop rapidly of science and technology, propose more and more higher requirement to the miniaturization of sensor measuring system and sensor accuracy class, current sensor, as the important component part of power measurement, is directly connected to the measuring accuracy of power measurement system.Although prior art has achieved the measuring accuracy of measuring system by circuit Integrated Solution, these comparatively advanced technology have also also existed a large amount of deficiencies.In existing current sensing techniques, can only by circuit Integrated Solution solution technical matters in one plane, but solid space is controlled to still there is technological deficiency, and causing measuring system can not improve its measuring accuracy because integrated level is not high, this directly has influence on operating accuracy and the range of application of current sensor.In order to address this problem, a kind of three shaft current sensors are proposed.But when three shaft current sensors use, normally directly accessed on three-phase high-voltage cable by equipment, if equipment can not normally run, then high pressure probably can arrive to equipment and damage.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of three shaft current sensor signal methods of calibration, comprising the steps:
1) collection of three axis signals: three shaft current sensors A axles, B axle and C axle are accessed three-phase high-voltage cable A` phase, B` phase and C` phase respectively, start three shaft current sensors, adopt the current signal of difference acquisition mode collection access three-phase high-voltage cable A` phase, B` phase and C` phase;
2) sensor validates: adopt A/D converter to process the current signal of step 1) three-phase high-voltage cable A` phase, B` phase and C` phase; Adopt single-ended collection to gather the supply voltage of three shaft current sensors A axles, B axle and C axle respectively, then detect instruction through host computer input, obtain sensor validates result;
3) acquisition of transfer instruction or END instruction: step 2) obtain sensor validates result and send out deaf to host computer, carry out Data Comparison, select transfer instruction or END instruction by comparing result.
Further, in step 3), transfer instruction or END instruction obtain manner are: if sensor validates result is within normal interval, then, host computer starts move instruction, the data-signal carrying out processing through A/D converter will be passed to next unit, if sensor validates result is not within normal interval, then, host computer sends END instruction.
Further, sensor validates result is 5.0V ~ 5.6V in the voltage range that the voltage range that normal interval is A axle and B axle is 3.0V ~ 3.6V, C axle.
Further, sensor validates result is 5.0V ~ 5.3V in the voltage range that the voltage that normal interval is A axle and B axle is 3.3V ~ 3.6V, C axle.
Further, step 2) data-signal that to carry out through A/D converter processing after detection instruction input, send to storage area and store instruction and store.
This verification operation method is simple, and real time data acquisition also sends, and comprises acquisition time, sensor number, data point numbering, three-pass DINSAR signal, six road single-ended signals, supply voltage signal etc.
Accompanying drawing explanation
Fig. 1 is system flow schematic diagram of the present invention.
Embodiment
Embodiments of the present invention are described in detail below in conjunction with drawings and Examples.
With reference to Fig. 1, a kind of three shaft current sensor signal methods of calibration, comprise the steps:
1) collection of three axis signals: three shaft current sensors A axles, B axle and C axle are accessed three-phase high-voltage cable A` phase, B` phase and C` phase respectively, start three shaft current sensors, adopt the current signal of difference acquisition mode collection access three-phase high-voltage cable A` phase, B` phase and C` phase;
2) sensor validates: adopt A/D converter to process the current signal of step 1) three-phase high-voltage cable A` phase, B` phase and C` phase; Adopt single-ended collection to gather the supply voltage of three shaft current sensors A axles, B axle and C axle respectively, then detect instruction through host computer input, obtain sensor validates result;
3) acquisition of transfer instruction or END instruction: step 2) obtain sensor validates result and send out deaf to host computer, carry out Data Comparison, select transfer instruction or END instruction by comparing result.
Further, in step 3), transfer instruction or END instruction obtain manner are: if sensor validates result is within normal interval, then, host computer starts move instruction, the data-signal carrying out processing through A/D converter will be passed to next unit, if sensor validates result is not within normal interval, then, host computer sends END instruction.
Further, sensor validates result is 5.0V ~ 5.6V in the voltage range that the voltage range that normal interval is A axle and B axle is 3.0V ~ 3.6V, C axle.
Further, sensor validates result is 5.0V ~ 5.3V in the voltage range that the voltage that normal interval is A axle and B axle is 3.3V ~ 3.6V, C axle.
Further, step 2) data-signal that to carry out through A/D converter processing after detection instruction input, send to storage area and store instruction and store.
Table 1 three shaft current sensor Detector interface signal detail list
Other numerical value are as follows:
The corresponding original figure amount of Differential Input :+5V ~-5V :-32768 ~+32767.Supply voltage detects: the corresponding original figure amount of 0 ~+48V: 0 ~+32767.AD sample frequency: 200Hz.Trigger event stores: first 20 seconds of trigger instants, latter 100 seconds triaxial differential data.Maximumly store event: 20 times.Event trigger threshold: 1/2000 ~ 1 of full scale can be established.Transducer range: can establish according to front end sensors actual range.
Claims (5)
1. three shaft current sensor signal methods of calibration, is characterized in that: comprise the steps:
1) collection of three axis signals: three shaft current sensors A axles, B axle and C axle are accessed three-phase high-voltage cable A` phase, B` phase and C` phase respectively, start three shaft current sensors, adopt the current signal of difference acquisition mode collection access three-phase high-voltage cable A` phase, B` phase and C` phase;
2) sensor validates: adopt A/D converter to process the current signal of step 1) three-phase high-voltage cable A` phase, B` phase and C` phase; Adopt single-ended collection to gather the supply voltage of three shaft current sensors A axles, B axle and C axle respectively, then detect instruction through host computer input, obtain sensor validates result;
3) acquisition of transfer instruction or END instruction: step 2) obtain sensor validates result and send out deaf to host computer, carry out Data Comparison, select transfer instruction or END instruction by comparing result.
2. three shaft current sensor signal methods of calibration according to claim 1, it is characterized in that: in step 3), transfer instruction or END instruction obtain manner are: if sensor validates result is within normal interval, then, host computer starts move instruction, the data-signal carrying out processing through A/D converter will be passed to next unit, if sensor validates result is not within normal interval, then, host computer sends END instruction.
3., according to three shaft current sensor signal methods of calibration described in claim 1 to 2, it is characterized in that: the voltage range that sensor validates result is 3.0V ~ 3.6V, C axle in the voltage range that normal interval is A axle and B axle is 5.0V ~ 5.6V.
4. three shaft current sensor signal methods of calibration according to claims 1 to 3, is characterized in that: the voltage range that sensor validates result is 3.3V ~ 3.6V, C axle at the voltage that normal interval is A axle and B axle is 5.0V ~ 5.3V.
5. three shaft current sensor signal methods of calibration according to claim 1, is characterized in that: step 2) carry out the data-signal that processes through A/D converter after detection instruction input, send to storage area and store instruction and store.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510707895.7A CN105277908A (en) | 2015-10-28 | 2015-10-28 | Three-axis current sensor signal calibration method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510707895.7A CN105277908A (en) | 2015-10-28 | 2015-10-28 | Three-axis current sensor signal calibration method |
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| CN105277908A true CN105277908A (en) | 2016-01-27 |
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| CN201510707895.7A Pending CN105277908A (en) | 2015-10-28 | 2015-10-28 | Three-axis current sensor signal calibration method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110346633A (en) * | 2019-08-02 | 2019-10-18 | 武汉三相电力科技有限公司 | Magneto-electric current sensor and cable fault localization method |
| CN110726962A (en) * | 2019-10-31 | 2020-01-24 | 东南大学 | Gain fault diagnosis method for current sensor of permanent magnet linear motor |
-
2015
- 2015-10-28 CN CN201510707895.7A patent/CN105277908A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110346633A (en) * | 2019-08-02 | 2019-10-18 | 武汉三相电力科技有限公司 | Magneto-electric current sensor and cable fault localization method |
| CN110726962A (en) * | 2019-10-31 | 2020-01-24 | 东南大学 | Gain fault diagnosis method for current sensor of permanent magnet linear motor |
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Application publication date: 20160127 |