CN206684286U - A kind of alternation power frequency magnetic field calibrating installation - Google Patents
A kind of alternation power frequency magnetic field calibrating installation Download PDFInfo
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- CN206684286U CN206684286U CN201720353874.4U CN201720353874U CN206684286U CN 206684286 U CN206684286 U CN 206684286U CN 201720353874 U CN201720353874 U CN 201720353874U CN 206684286 U CN206684286 U CN 206684286U
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- magnetic field
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- frequency magnetic
- power frequency
- calibrating installation
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Abstract
The utility model is a kind of alternation power frequency magnetic field calibrating installation, and described device includes signal generator, power amplifier, six and half tables and Helmholtz coil, and described Helmholtz coil includes two current-carrying coils；The signal generator sends primary standard signal to power amplifier；Six and half tables for being externally connected to detection receiving power output signal of described power amplifier；Described power amplifier will send Helmholtz coil to again after the primary standard signal received amplification；Described Helmholtz coil produces uniform power frequency magnetic field after amplified signal is received, in the axle midpoint area of two current-carrying coils of current-carrying coil.Belong to electronic technology field.Purpose is to provide a kind of alternation power frequency magnetic field calibrating installation.
Description
Technical field
Power frequency magnetic field research field is the utility model is related to, especially relates to a kind of alternation power frequency magnetic field calibrating installation.
Background technology
The generation system that Helmholtz coil is used to alternating current-direct current magnetic field is always only choosing.All the time, respectively
Industry professional person is usually through to the improvement on Helmholtz coil arrangement, to realize two dimension, the test of three-dimensional and multidimensional magnetic field；It is logical
Cross distinct device mutually to arrange in pairs or groups with Helmholtz coil, to realize different functional requirements, due to the relevant device shadow arranged in pairs or groups
Ring, it is block short slab all the time that system, which occurs, for AC magnetic field in certain a wide range of interior continuous calibrating.Therefore, it is necessory to provide
A kind of collocation mode of improvement design, to overcome the short slab of prior art highly significant.
Utility model content
The utility model provides a kind of design succinctly, can do continuity to the AC magnetic field in the range of 1Hz to 50kHz
The device of calibrating.
To solve technical problem proposed by the invention, the technical scheme used for：A kind of alternation power frequency magnetic field calibrating dress
Put, described device includes signal generator, power amplifier, six and half tables and Helmholtz coil, described Helmholtz
Coil includes two current-carrying coils；The signal generator sends primary standard signal to power amplifier；Described power
Six and half tables for being externally connected to detection receiving power output signal of amplifier；The original that described power amplifier will receive
Helmholtz coil is sent to again after the amplification of beginning standard signal；Described Helmholtz coil after amplified signal is received,
Uniform power frequency magnetic field is produced in the axle midpoint area of two current-carrying coils of current-carrying coil.
Further, two described current-carrying coils are the loading current circular coils that interior diameter is 40 centimetres.
Further, described loading current circular coil is to set in a fixed manner, described two current-carrying coil phases
It is mutually parallel and coaxial.
Further, the mutual spacing of described two parallel coaxial current-carrying coils is 20 centimetres.
Further, described current-carrying coil is fixedly installed by fixed support, and described fixed support insulate for plastic cement
Support.
Further, it is provided with measured object placement platform among described fixed support.
Further, described measured object placement platform is high 15 centimetres, and the top end face length of side is 5 centimetres * 5 centimetres of pros
Shape.
It is using the beneficial effect of above-mentioned technical proposal：On the premise of magnetic field precision, stability and uniformity is not reduced,
So that the structure design of magnetic field calibrating installation is more succinct, it is adjustable that the AC magnetic field in the range of 1Hz to 50kHz can do continuity
Calibrating.
Brief description of the drawings
Fig. 1 is alternation power frequency magnetic field calibrating installation schematic diagram of the present utility model；
Fig. 2 is the structural representation of Helmholtz coil in the utility model.
In accompanying drawing, the list of parts representated by each label is as follows：
1- current-carrying coils, 2- insulating supports, 3- measured object placement platforms.
Embodiment
Content of the present utility model is further described below in conjunction with accompanying drawing.Example is served only for explaining this practicality
It is new, it is not intended to limit the scope of the utility model.
As shown in Figure 1, a kind of alternation power frequency magnetic field calibrating installation described in this programme, described device includes signal
Generator, power amplifier, six and half tables and Helmholtz coil, described Helmholtz coil include two current-carrying coils；
The signal generator sends primary standard signal to power amplifier；Described power amplifier is externally connected to detection
Six and half tables of receiving power output signal；Described power amplifier will pass again after the primary standard signal received amplification
Give Helmholtz coil；Described Helmholtz coil is after amplified signal is received, in two current-carrying conductors of current-carrying coil
The axle midpoint area of circle produces uniform power frequency magnetic field.
As shown in Figure 2, described Helmholtz coil is placed flat by two current-carrying coils 1, insulating support 2 and measured object
Platform 3 forms, and two described in this programme current-carrying coil is the loading current circular coil that interior diameter is 40 centimetres；Described current-carrying
Circular coil 1 is to set in a fixed manner, and described two current-carrying coils 1 are parallel to each other and coaxial, and described two are parallel
The mutual spacing of coaxial current-carrying coil 1 is 20 centimetres, and described current-carrying coil 1 is fixedly installed by fixed support, institute
The fixed support stated is plastic cement insulating support 2, measured object placement platform 3 is provided among described fixed support, in this programme
In, described measured object placement platform is high 15 centimetres, and the top end face length of side is 5 centimetres * 5 centimetres of square.
When it is implemented, signal generator inputs +/- 5V standard sine wave signal instruction, pass through power amplifier
Helmholtz coil is transferred to after its signal is amplified into N times, Helmholtz coil receives amplified signal, activates current-carrying coil 1
And produce uniform magnetic field in 125 cubic centimetres of two current-carrying coils, 1 center region.Shown on six and half tables simultaneously connected in series
Output signal value at present, it is whether consistent with analog signal to detect the real output signal of power amplifier, to determine that magnetic field is strong
The accuracy of degree, equipment under test are placed on Helmholtz coil central platform 3, are demarcated or are examined and determine according to output valve.
When repeatedly need to be demarcated or examined and determine, magnetic field size can be set by adjusting the output of power amplifier, to reach use demand.
Wherein, described signal generator, power amplifier, six and half tables and Helmholtz coil are sequentially connected to form one
Group series circuit, magnetic field size is controlled by transferring the value of signal generator or power amplifier.
Preferred embodiment of the present utility model is the foregoing is only, it is all in this practicality not to limit the utility model
Within new principle, any modification, equivalent substitution and improvements made etc., the scope of protection of the utility model should be included in
Within.
Claims (7)
- A kind of 1. alternation power frequency magnetic field calibrating installation, it is characterised in that：Described device includes signal generator, power amplification Device, six and half tables and Helmholtz coil, described Helmholtz coil include two current-carrying coils；The signal generator will Primary standard signal sends power amplifier to；Described power amplifier is externally connected to detection receiving power output signal Six and half tables；Described power amplifier will send Helmholtz's line to again after the primary standard signal received amplification Circle；Described Helmholtz coil is after amplified signal is received, in the axle midpoint area of two current-carrying coils of current-carrying coil Produce uniform power frequency magnetic field.
- 2. alternation power frequency magnetic field calibrating installation according to claim 1, it is characterised in that：Two described current-carrying coils are Interior diameter is 40 centimetres of loading current circular coil.
- 3. alternation power frequency magnetic field calibrating installation according to claim 2, it is characterised in that：Described loading current circular coil is Set in a fixed manner, described two current-carrying coils are parallel to each other and coaxial.
- 4. alternation power frequency magnetic field calibrating installation according to claim 3, it is characterised in that：Described two are parallel coaxial The mutual spacing of current-carrying coil is 20 centimetres.
- 5. alternation power frequency magnetic field calibrating installation according to claim 3, it is characterised in that：Described current-carrying coil passes through solid Fixed rack is fixedly installed, and described fixed support is plastic cement insulating support.
- 6. alternation power frequency magnetic field calibrating installation according to claim 5, it is characterised in that：Set among described fixed support There is measured object placement platform.
- 7. alternation power frequency magnetic field calibrating installation according to claim 6, it is characterised in that：Described measured object placement platform High 15 centimetres, the top end face length of side is 5 centimetres * 5 centimetres of square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720353874.4U CN206684286U (en) | 2017-04-06 | 2017-04-06 | A kind of alternation power frequency magnetic field calibrating installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720353874.4U CN206684286U (en) | 2017-04-06 | 2017-04-06 | A kind of alternation power frequency magnetic field calibrating installation |
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| CN206684286U true CN206684286U (en) | 2017-11-28 |
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| CN201720353874.4U Active CN206684286U (en) | 2017-04-06 | 2017-04-06 | A kind of alternation power frequency magnetic field calibrating installation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109839610A (en) * | 2018-12-27 | 2019-06-04 | 中国计量科学研究院 | Helmholtz coil constant exchange calibration system and method based on orthogonality principle |
| CN113030828A (en) * | 2021-03-25 | 2021-06-25 | 河南省计量科学研究院 | Alternating magnetometer verification system and method |
-
2017
- 2017-04-06 CN CN201720353874.4U patent/CN206684286U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109839610A (en) * | 2018-12-27 | 2019-06-04 | 中国计量科学研究院 | Helmholtz coil constant exchange calibration system and method based on orthogonality principle |
| CN109839610B (en) * | 2018-12-27 | 2021-02-12 | 中国计量科学研究院 | Helmholtz coil constant alternating current calibration system and method based on orthogonality principle |
| CN113030828A (en) * | 2021-03-25 | 2021-06-25 | 河南省计量科学研究院 | Alternating magnetometer verification system and method |
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