CN109669152A - A kind of current parameters calibration system and method - Google Patents
A kind of current parameters calibration system and method Download PDFInfo
- Publication number
- CN109669152A CN109669152A CN201811391761.9A CN201811391761A CN109669152A CN 109669152 A CN109669152 A CN 109669152A CN 201811391761 A CN201811391761 A CN 201811391761A CN 109669152 A CN109669152 A CN 109669152A
- Authority
- CN
- China
- Prior art keywords
- current
- change
- over switch
- fluxgate
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- G01R35/007—Standards or reference devices, e.g. voltage or resistance standards, "golden references"
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
The present invention relates to a kind of current parameters calibration system and methods.System includes measuring instrument, current acquisition display module, regulated power supply and host computer；Measuring instrument includes fluxgate current sensor, the first change-over switch, the second change-over switch and power resistor module；Tested electric current input/output interface and current measurement input/output interface are additionally provided on the measuring instrument；Fluxgate current sensor includes primary coil；In a certain proportion of coil of fluxgate current sensor primary side coiling, tested electric current is accessed in primary side series connection, utilize the electric current of digital multimeter measurement fluxgate current sensor output end, realize current parameters calibration, measurement accuracy depends on digital multimeter, since digital multimeter technical indicator is high, therefore this method measurement accuracy is high.
Description
Technical field
The present invention relates to a kind of current parameters calibration system and methods.
Background technique
With the development of guided missile and carrier rocket technology, lighting, fast-response to engine opening and closing control solenoid valve
It is all the more prominent with high reliability request.Bullet/arrow dynamical system realizes that engine repeatedly starts by the multiple opening and closing of solenoid valve, electricity
The reliability and performance of magnet valve decide the success or failure and performance level of engine operation.Solenoid valve is in the engine repeatedly started
It is of crucial importance, especially in attitude control engine, just because of use solenoid valve, just realize engine repeated priming and
Pulsed operation.For the reliability and performance for guaranteeing solenoid valve, needs to measure the steady-state current parameter of solenoid valve, can be used
The satellite booster subsystem GU Generic Unit test equipment (referred to as, special measurement equipment) of Shanghai Research Institute measures, and is inciting somebody to action
Before the equipment is for the steady-state current parameter measurement of solenoid valve, need to calibrate the equipment.
But it since such special measurement equipment current measurement module uses metal-oxide-semiconductor, can be damaged according to direct calibration method
Special measurement equipment, therefore cannot be calibrated using direct calibration method.
Summary of the invention
In order to realize the calibration of such special measurement equipment, the present invention provides a kind of current parameters calibration system, based on non-contact
Measuring principle realizes the calibration of special test equipment current parameters.
The technical solution of the invention is as follows provides a kind of current parameters calibration system, is characterized in that including surveying
Measure instrument, current acquisition display module, regulated power supply and host computer；
Above-mentioned regulated power supply is used to provide voltage to by the special measurement equipment in school；
Above-mentioned host computer is for reading by the tested current value of the special measurement equipment in school；
Above-mentioned measuring instrument includes fluxgate current sensor, the first change-over switch, the second change-over switch and power resistor mould
Block；Tested electric current input/output interface and current measurement input/output interface are additionally provided on above-mentioned measuring instrument；
Above-mentioned fluxgate current sensor includes primary coil；
One end of above-mentioned tested electric current input interface passes through cable, the first change-over switch and power resistor module and primary side line
Circle connection, primary coil are connect by cable with tested current output interface one end；The output of above-mentioned fluxgate current sensor
End is connected to by cable and the second change-over switch with current measurement output interface one end, a termination magnetic of current measurement input interface
Open gate current sensor；
The other end of above-mentioned tested electric current input/output interface is for connecing by the special measurement equipment in school；Above-mentioned current measurement input is defeated
Another termination current acquisition display module of outgoing interface.
Further, above-mentioned power resistor module is N number of, wherein N >=2, each power resistor wired in parallel setting；
The input terminal of above-mentioned first change-over switch is connect by cable with one end of tested electric current input interface, and above-mentioned first
The output end and power resistor module of change-over switch correspond, and are connect respectively with each power resistor module by cable.
Further, the current acquisition display module is digital multimeter.
Further, the measuring instrument further includes the radiating module connecting with power resistor module.
It further, further include 220V power filtering module, first switch power supply, refrigeration device and second switch power supply,
220V power filtering module passes through second switch power supply and first switch power supply and fluxgate current sensor and refrigerator respectively
Part connection.
Further, the refrigeration device is fan.
Current parameters calibration method is realized using above-mentioned system the present invention also provides a kind of, comprising the following steps:
Step 1: system electrification；
Step 2: fluxgate current sensor will be accessed by the tested electric current in the special measurement equipment in school by the first change-over switch
Primary side；
Step 3: output electric current IOPass through fluxgate current sensor output end, the second change-over switch, current measurement output
Interface is shown in digital multimeter；
Step 4: the standard current value I of tested electric current is calculated1:
Wherein k is conversion ratio, N1For primary coil coiling the number of turns, IOFor current acquisition display module current indication value；
Step 5: the I that comparison step four obtains1The tested current value read with host computer obtains calibration factor, realizes school
It is quasi-.
Further, the first change-over switch is adjusted, so that its output end is successively connect with each power resistor module, every adjusting
Change-over switch, is repeated once step 3 to step 5；N group calibration factor is obtained, average acquisition is carried out to N group calibration factor
Accurate calibration coefficient.
The beneficial effects of the present invention are:
1, the present invention in primary side by connecting and accessing quilt in a certain proportion of coil of fluxgate current sensor primary side coiling
Electric current is surveyed, using the electric current of digital multimeter measurement fluxgate current sensor output end, realizes current parameters calibration, measurement essence
Degree depends on digital multimeter, and since digital multimeter technical indicator is high, therefore this method measurement accuracy is high；
2, the present invention includes the power resistor module of N number of parallel connection, realizes multiple spot calibration, and the calibration factor finally obtained is accurate
Degree is high；
3, the configuration of the present invention is simple, it is only necessary to regulated power supply, digital multimeter and measurement cable are provided, electric current can be realized
Parametric calibration, and it is feasible, effective, there is promotional value.
Detailed description of the invention
Fig. 1 is current parameters calibration system block diagram of the invention；
Fig. 2 is measuring instrument functional block diagram of the present invention.
Specific embodiment
Below in conjunction with drawings and the specific embodiments, to for example related each component of a specific embodiment of the invention, each portion
/ mutual alignment and connection relationship, the effect of each section and working principle etc. be described in further detail.
It will be seen from figure 1 that the current parameters calibration system of the present embodiment mainly includes measuring instrument, current acquisition display mould
Block, regulated power supply and host computer；Current acquisition display module is digital multimeter in the present embodiment, and regulated power supply, host computer are equal
It is connect with by the special measurement equipment in school, regulated power supply is used to provide voltage to by the special measurement equipment in school；Host computer is specially surveyed for reading by school
The tested current value of equipment；It is connect with measuring instrument by the special measurement equipment in school and digital multimeter.
Figure it is seen that the present embodiment measuring instrument mainly includes fluxgate current sensor and power resistor module,
On also have there are two interface with external connection, respectively tested electric current input/output interface and current measurement input and output connect
Mouthful, inside further include and one-to-one two change-over switches of two external interfaces, respectively the first change-over switch, second turn
Change switch.
Fluxgate current sensor includes primary coil；Power resistor module is 1 or N number of.N is equal in the present embodiment
10.When for 1, the input/output terminal of corresponding first change-over switch respectively with tested electric current input interface and power resistor mould
After block is connected by cable, power resistor module is connect with the primary coil of fluxgate current sensor by cable again；Work as function
When rate resistive module is N number of, corresponding first change-over switch includes N number of output port, and input terminal connects with the input of tested electric current
Mouth is connected by cable, and N number of output port connects one to one with N number of power resistor module respectively, and each power module difference is again
It is connect with the primary coil of fluxgate current sensor by cable.The output end of fluxgate current sensor passes through the second conversion
Switch is connect with current measurement output interface.The other end of tested electric current input interface is connect with by the special measurement equipment in school；Electric current is surveyed
Measure another termination digital multimeter of input/output interface.In measuring instrument, it is tested electric current I1By tested electric current input interface,
First change-over switch, power resistor module access fluxgate current sensor primary side, export electric current IOIt is passed by magnetic flux gate current
Sensor output end, the second change-over switch, current measurement output interface access digital multimeter.
The present embodiment measuring instrument further include radiating module, 220V power filtering module, first switch power supply, refrigeration device and
Second switch power supply, refrigeration device is fan in the embodiment.Radiating module is connect with power resistor module, is used for power resistor
The heat dissipation of module, reduces power resistor temperature drift, and 220V power filtering module passes through second switch power supply respectively and first opens
Powered-down source is connect with fluxgate current sensor and refrigeration device, is that fluxgate current sensor and fan are powered, fan is to scattered
Thermal modules heat dissipation.
After the connection of each equipment is finished and powered on, measuring instrument is switched into first passage, that is, adjusts the first change-over switch, by the
The output end of one change-over switch is connect with the first power resistor module, completes the connection of the first current channel；Regulated power supply output
28V voltage forms closed circuit by the special measurement equipment in school and regulated power supply, test cable, measuring instrument, and being tested electric current is I1, primary side
Coiling the number of turns is N1；Export electric current IOIt is connect by fluxgate current sensor output end, the second change-over switch, current measurement output
Mouth is shown by digital multimeter.
It is calculated according to formula (1):
N1I1=kIO (1)
It obtains:
The standard current value of first calibration point is obtained at this time, i.e., when the first power resistor module being accessed circuit, obtains
Standard current value, while by reading tested current value by the special measurement equipment host computer in school；
Measuring instrument is switched into second channel, i.e., the first change-over switch is equally adjusted, by the output end of the first change-over switch
It is connect with the second power resistor module, completes the connection of the second current channel, repeat the above process, be similarly obtained second calibration
The data of point obtain the data of the tenth calibration point until switching to the tenth channel.The present embodiment passes through 10 power resistors
10 current point test datas and 10 current standard values can be obtained, by current measurement value and electric current mark in the switching of module
Quasi- value carries out least square fitting operation, obtains correction coefficient, realizes calibration.
Claims (8)
1. a kind of current parameters calibration system, it is characterised in that: including measuring instrument, current acquisition display module, regulated power supply and
Host computer；
The regulated power supply is used to provide voltage to by the special measurement equipment in school；
The host computer is for reading by the tested current value of the special measurement equipment in school；
The measuring instrument includes fluxgate current sensor, the first change-over switch, the second change-over switch and power resistor module；Institute
It states and is additionally provided with tested electric current input/output interface and current measurement input/output interface on measuring instrument；
The fluxgate current sensor includes primary coil；
One end of tested electric current input interface is connect by cable, the first change-over switch and power resistor module with primary coil,
Primary coil is connect by cable with tested current output interface one end；The output end of the fluxgate current sensor passes through line
Cable and the second change-over switch are connected to current measurement output interface one end, a termination fluxgate electric current of current measurement input interface
Sensor；
The other end of tested electric current input/output interface is for connecing by the special measurement equipment in school；The current measurement input/output interface
Another termination current acquisition display module.
2. current parameters calibration system according to claim 1, it is characterised in that:
The power resistor module is N number of, wherein N >=2, each power resistor wired in parallel setting；
The input terminal of first change-over switch is connect by cable with one end of tested electric current input interface, first conversion
The output end and power resistor module of switch correspond, and are connect respectively with each power resistor module by cable.
3. current parameters calibration system according to claim 1, it is characterised in that: the current acquisition display module is number
Word multimeter.
4. current parameters calibration system according to claim 1, it is characterised in that: the measuring instrument further includes and power is electric
Hinder the radiating module of module connection.
5. current parameters calibration system according to claim 1, it is characterised in that: further include 220V power filtering module,
First switch power supply, refrigeration device and second switch power supply, 220V power filtering module pass through second switch power supply and respectively
One Switching Power Supply is connect with fluxgate current sensor and refrigeration device.
6. current parameters calibration system according to claim 5, it is characterised in that: the refrigeration device is fan.
7. a kind of realize current parameters calibration method using any system of claim 1 to 6, which is characterized in that including
Following steps:
Step 1: system electrification；
Step 2: it is former that fluxgate current sensor will be accessed by the tested electric current in the special measurement equipment in school by the first change-over switch
Side；
Step 3: output electric current IOPass through fluxgate current sensor output end, the second change-over switch, current measurement output interface
It is shown in digital multimeter；
Step 4: the standard current value I of tested electric current is calculated1:
Wherein k is conversion ratio, N1For primary coil coiling the number of turns, IOFor current acquisition display module current indication value；
Step 5: the I obtained by step 41The tested current value read with host computer obtains calibration factor, realizes calibration.
8. realization current parameters calibration method according to claim 7, which is characterized in that in step 2:
The first change-over switch is adjusted, so that its output end is successively connect with each power resistor module, change-over switch of every adjusting,
Step 3 is repeated once to step 4；The multiple groups I obtained by step 41The tested current value read with host computer carries out most
Small two multiply fitting operation, obtain calibration factor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811391761.9A CN109669152A (en) | 2018-11-21 | 2018-11-21 | A kind of current parameters calibration system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811391761.9A CN109669152A (en) | 2018-11-21 | 2018-11-21 | A kind of current parameters calibration system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109669152A true CN109669152A (en) | 2019-04-23 |
Family
ID=66142680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811391761.9A Pending CN109669152A (en) | 2018-11-21 | 2018-11-21 | A kind of current parameters calibration system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109669152A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110749848A (en) * | 2019-09-25 | 2020-02-04 | 西安航天计量测试研究所 | Current parameter calibration system and method based on current channel switching instrument |
| CN112748384A (en) * | 2020-12-28 | 2021-05-04 | 西安航天计量测试研究所 | Device and method for calibrating induction type polarity detection system |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104267364A (en) * | 2014-09-26 | 2015-01-07 | 天津电气科学研究院有限公司 | Method for calibrating large-current sensor |
| CN104297710A (en) * | 2014-09-26 | 2015-01-21 | 天津电气科学研究院有限公司 | High-current sensor calibration method based on curve fitting method |
| CN204347228U (en) * | 2014-12-12 | 2015-05-20 | 西安航天计量测试研究所 | A kind of engine special test equipment field calibration device |
| CN107247249A (en) * | 2017-07-12 | 2017-10-13 | 周浩 | A kind of alternating current-direct current ammeter tester calibrating installation and calibration method |
| CN107807345A (en) * | 2017-11-13 | 2018-03-16 | 国家电网公司 | A kind of Three Phase Alternating-current Electrical Energy Meters verification system and method |
| CN108151694A (en) * | 2017-12-20 | 2018-06-12 | 西安航天计量测试研究所 | Angular displacement sensor automated calibration system and method |
| CN108226824A (en) * | 2018-01-08 | 2018-06-29 | 北京智芯微电子科技有限公司 | A kind of fully integrated current sensor chips of TMR and ASIC |
| CN108363029A (en) * | 2018-05-09 | 2018-08-03 | 中国科学院高能物理研究所 | The calibration system and calibration method of DC current sensor |
| CN209417277U (en) * | 2018-11-21 | 2019-09-20 | 西安航天计量测试研究所 | A kind of current parameters calibration system |
-
2018
- 2018-11-21 CN CN201811391761.9A patent/CN109669152A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104267364A (en) * | 2014-09-26 | 2015-01-07 | 天津电气科学研究院有限公司 | Method for calibrating large-current sensor |
| CN104297710A (en) * | 2014-09-26 | 2015-01-21 | 天津电气科学研究院有限公司 | High-current sensor calibration method based on curve fitting method |
| CN204347228U (en) * | 2014-12-12 | 2015-05-20 | 西安航天计量测试研究所 | A kind of engine special test equipment field calibration device |
| CN107247249A (en) * | 2017-07-12 | 2017-10-13 | 周浩 | A kind of alternating current-direct current ammeter tester calibrating installation and calibration method |
| CN107807345A (en) * | 2017-11-13 | 2018-03-16 | 国家电网公司 | A kind of Three Phase Alternating-current Electrical Energy Meters verification system and method |
| CN108151694A (en) * | 2017-12-20 | 2018-06-12 | 西安航天计量测试研究所 | Angular displacement sensor automated calibration system and method |
| CN108226824A (en) * | 2018-01-08 | 2018-06-29 | 北京智芯微电子科技有限公司 | A kind of fully integrated current sensor chips of TMR and ASIC |
| CN108363029A (en) * | 2018-05-09 | 2018-08-03 | 中国科学院高能物理研究所 | The calibration system and calibration method of DC current sensor |
| CN209417277U (en) * | 2018-11-21 | 2019-09-20 | 西安航天计量测试研究所 | A kind of current parameters calibration system |
Non-Patent Citations (1)
| Title |
|---|
| 叶晓雯等: "基于最小二乘法的霍尔电流传感器静态校准", 航空科学技术, vol. 27, no. 9, pages 52 - 55 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110749848A (en) * | 2019-09-25 | 2020-02-04 | 西安航天计量测试研究所 | Current parameter calibration system and method based on current channel switching instrument |
| CN112748384A (en) * | 2020-12-28 | 2021-05-04 | 西安航天计量测试研究所 | Device and method for calibrating induction type polarity detection system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103177551B (en) | Data collecting card and its data acquisition device with self-calibration function | |
| CN209417277U (en) | A kind of current parameters calibration system | |
| CN102749520B (en) | Multichannel high-precision thermal resistance breadboard based on extensions for instrumentation (PXI) bus | |
| CN109669152A (en) | A kind of current parameters calibration system and method | |
| CN108663650B (en) | Electric energy meter on-site calibration device and method | |
| CN209417278U (en) | A kind of current parameters calibration system based on method of offset | |
| CN105223536B (en) | A kind of portable electric meter field calibration system | |
| CN110749848A (en) | Current parameter calibration system and method based on current channel switching instrument | |
| CN104698276A (en) | Resistor verifying system | |
| CN104697659A (en) | Temperature measuring device and method using NTC thermistor | |
| CN104391259B (en) | Magnetic moment real-time test system and test method thereof | |
| CN106644148A (en) | Temperature detecting method, device and equipment | |
| CN107064849A (en) | Electronic current mutual inductor check system and calibration equipment | |
| CN106053952B (en) | System and method for accurately measuring inductance curve of switched reluctance motor | |
| CN109459717A (en) | A kind of current parameters calibration system and method based on method of offset | |
| CN106841812B (en) | Anti- power jitter two dimension electric resistance array reading circuit | |
| CN106526499A (en) | Highly-stable current source examination method and system | |
| CN203616374U (en) | DC potentiometer experimental device adopting constant current source | |
| CN112162184B (en) | Device and method for measuring S parameters of microwave device at low temperature | |
| CN103675470A (en) | N*M dimension resistor network measuring device | |
| CN203502489U (en) | Improved circuit capable of expanding measurement scope of voltmeter | |
| CN114113836A (en) | Temperature rise experiment device and method for isolation transformer | |
| CA3115214A1 (en) | Smart current transformer system | |
| CN203241479U (en) | Inductance and capacitance measuring instrument based on switching circuit | |
| CN212409927U (en) | Heat treatment temperature measurement recorder stability test simulator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |