CN109782198A - A kind of three axis bidirectional compensating formula magnetic field measuring devices - Google Patents
A kind of three axis bidirectional compensating formula magnetic field measuring devices Download PDFInfo
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- CN109782198A CN109782198A CN201910158483.0A CN201910158483A CN109782198A CN 109782198 A CN109782198 A CN 109782198A CN 201910158483 A CN201910158483 A CN 201910158483A CN 109782198 A CN109782198 A CN 109782198A
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- magnetic field
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- pedestal
- field sensor
- field measuring
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Abstract
The present invention provides a kind of three axis bidirectional compensating formula magnetic field measuring devices, structure includes three axis ring supports, three axis bucking coils, magnetic field sensor, power source regulating circuit integrates and pedestal；Wherein, the three-dimensional coordinate direction of the three axis ring support and pedestal is consistent and fixes, the three axis bucking coil uniform winding is in three collar shape rack outer surfaces, power source regulating circuit is integrated to be connect with three axis bucking coil both ends, according to the surveyed magnitude of field intensity of magnetic field sensor and direction difference, the electric current for generating compensation magnetic field is provided to three axis bucking coils, and adjusts compensation magnetic field size and Orientation；Magnetic field sensor is placed in three collar shape internal stent central locations, and magnetic field sensor can be effectively ensured and be in stabilizing magnetic field environment.The present invention can be effectively improved the insufficient defect of measurement range of conventional magnetic field sensors, and indicating value is more stable accurate, and demagnetization rapidly, can be realized rapid survey, have biggish Development volue.
Description
Technical field
The invention belongs to magnetic field strength measuring device manufacturing fields, and in particular to a kind of three axis bidirectional compensating formula magnetic-field measurements
Device.
Background technique
In order to meet the measurement demand to the Various Complexes magnetic field environment such as low-intensity magnetic field, high-intensity magnetic field, device developer needs
New method and technique are constantly excavated, the measurement accuracy of magnetic field measuring instrument is further increased.Currently, in most of application environments
In be usually that magnetic field sensor is placed in tested magnetic field environment to the measurement method of magnetic field strength, directly to magnetic field of the goal intensity
Signal is acquired, converts, handles and exports, and obtains measurement result.This direct measurement method is to magnetic field sensor probe head
It is required that it is very high, if external magnetic field fluctuation range is larger, the biggish excitation of gap can be generated to magnetic field sensor, so that sensor
Error increases, and probe has different sensitivity to different magnetic field strength magnetic field sensors, only at magnetic field sensor probe head
In the most suitable range of sensitivity, most effective, accurate field strength values just can be obtained.Therefore one kind is designed to a variety of magnetic fields
Sensor can be also particularly necessary with suitable compensation device.
Summary of the invention
For current magnetic field intensity measuring instrument device, the measurement range in the case where a variety of magnetic field strengths measure environment exists not the present invention
It can extend, the problem that the violent error of external magnetic field environmental change is larger, a kind of three axis bidirectional compensating formula magnetic field strengths measurement is provided
Device.This magnetic field strength measuring device can not influence the normal work of magnetic field sensor itself with suitable plurality of specifications magnetic field sensor
Make state, achievable to measure a variety of magnetic field strengths, measurement result is accurate, reliable and stable.In order to realize compensation measurement function, this
It is as follows to invent the technical solution taken:
A kind of three axis bidirectional compensating formula magnetic field measuring devices, including three axis ring supports, three axis bucking coils, magnetic field sensor,
Power source regulating circuit is integrated and pedestal, wherein the pedestal is hollow hexahedron, the three axis ring support include X-axis, Y-axis,
Z axis pairwise orthogonal is fixedly connected with six face central points of the pedestal, and the three axis bucking coil uniform winding is in three collar shapes
Rack outer surface, the magnetic field sensor are mounted on three axis point of intersection, the power source regulating circuit it is integrated it is internal be equipped with battery and
Current regulating switch, the power source regulating circuit integrated installation is in pedestal.
Particularly, the three-dimensional coordinate direction of three axis ring supports and pedestal is consistent and fixes, and stent outer is equipped with number
Circle is uniformly distributed concave groove track, for installing three axis bucking coils, can guarantee quickly to generate in three collar shape internal stents
Uniform and stable compensation magnetic field, to offset or enhance magnetic field of the goal intensity in three axis bucking coil external environments；Power supply adjusts electricity
Road is integrated to be connect with three axis bucking coil both ends, different according to the surveyed magnitude of field intensity of magnetic field sensor, to three axis compensating lines
Circle provides the electric current for generating compensation magnetic field, and adjusts compensation magnetic field size and Orientation；Magnetic field sensor is placed in three axis ring supports
Center of inside position, being equidistant away from three collar shape stent inner surfaces and both ends, can be effectively ensured at magnetic field sensor respectively
In stabilizing magnetic field environment.
Further, the pedestal is cuboid, and length, width and height are respectively 20cm, 5cm, 5cm, and manufacture material used has good
Supportive, nonmagnetic and heat-resisting quantity.
Further, the three axis bucking coil is around to for clockwise or counterclockwise.
Further, the power source regulating circuit is integrated into cuboid, and length, width and height are respectively 5cm, 3cm, 3cm, the electric current
Regulating switch is stepless adjusting switch, and battery is connected with three axis bucking coil both ends.
Further, the controlled plant of current regulating switch is size of current and direction, surveys the magnetic field strength before adjusting
Amount device is placed in surveyed magnetic field of the goal environment, is carried out bigness scale amount to magnetic field of the goal intensity by magnetic field sensor first, is obtained
Pre- estimation field strength values, survey crew's (or software) are pre- to estimate whether field strength values exceed sensor according to bigness scale data
Measuring range makes compensation decision.
The measurement to a variety of magnetic field strengths may be implemented in the compensation soft magnetism detection device of a kind of adjustable magnetic proposed by the present invention；When
When external environment magnetic field strength is larger, preresearch estimates is carried out to magnetic field strength, adjusting source current generates three axis bucking coils
One contrary homogeneous constant magnetic field carries out negative-feedback counteracting, the i.e. magnetic field surveyed of magnetic field sensor to former magnetic field strength
Intensity is the magnetic field strength that external magnetic field intensity subtracts three axis bucking coils, therefore magnetic field sensor can work in sensitivity highest
Range ability in, thus error is effectively controlled, so realize high-intensity magnetic field compensation function；Conversely, working as external magnetic field intensity
When smaller, adjust three axis bucking coils and generate a homogeneous constant magnetic field identical with extraneous magnetic field of the goal direction, to former magnetic field
Intensity carries out positive feedback enhancing, i.e., the magnetic field strength that magnetic field sensor is surveyed is extraneous magnetic field of the goal intensity plus three axis compensating lines
The magnetic field strength of circle makes magnetic field sensor equally work in the best range of most stable, sensitivity, can effectively reduce measurement and misses
Difference realizes magnetic intensity compensation function；
A kind of three axis bidirectional compensating formula magnetic field measuring device proposed by the present invention can use under a variety of magnetic field strength environment, system
Make at low cost, compensation effect is obvious.
Detailed description of the invention
Fig. 1 is three axis entire compensation structure drawing of device of the invention.
Fig. 2 is compensation principle figure of the invention.
In above-mentioned attached drawing, 1: three axis ring support；2: three axis bucking coils；3: magnetic field sensor；4: power source regulating circuit
It is integrated；5: pedestal.
Specific embodiment
With reference to the accompanying drawing, the present invention will be described in detail.
As shown in Figure 1, the concrete function in order to realize bidirectional compensating formula magnetic measuring device, the present invention uses following technical side
Case: a kind of compensation soft magnetism detection device of adjustable magnetic includes three axis ring supports 1, three axis bucking coils 2, magnetic field sensor 3, power supply
Adjust circuit integration 4 and pedestal 5；According to three matched axis ring supports 1 of the size selection of magnetic field sensor 3, three axis
The central point (diagonal line intersection point) in every axis of ring support 1 face corresponding with pedestal 5 is fixedly connected, by the three axis compensating line
Circle 2 is wrapped in three axis ring support, the 1 concave groove track, and elastic appropriate, the magnetic field sensor 3 is fixedly mounted on three collars
At three axis intersection positions of shape bracket 1, it must be maintained at three axis ring supports, 1 geometric center position, in three axis ring supports 3
Surface and both ends are equidistant, and guarantee that magnetic field sensor 3 is in homogeneous constant magnetic field environment；The power source regulating circuit collection
It is connect by conducting wire with three axis bucking coils 2 at 4, realizes the adjusting to coil power supply size of current and direction.
As shown in Fig. 2, being described further to the working principle of the bidirectional compensating magnetic field measuring device: by the magnetic field strength
Measuring device is placed in surveyed magnetic field of the goal environment, is carried out bigness scale amount to magnetic field of the goal intensity by magnetic field sensor first, is obtained
To pre- estimation field strength values, whether survey crew's (or software) exceeds sensing according to bigness scale data, pre- estimation field strength values
Device measuring range makes compensation decision:
1) when bigness scale magnetic field strength is more than range, adjusting source current size and Orientation makes three axis bucking coils generate reversed magnetic
, negative compensation is carried out to target high-intensity magnetic field, at this time: magnetic field of the goal intensity=tri- axis bucking coil magnetic field strengths+magnetic field sensor shows
Value, to complete negative compensation measurement；
2) when magnetic field of the goal because too it is weak be not enough to cause magnetic field sensor sensing element that acquisition movement occurs when, magnetic field sensor is defeated
Noise error ratio is very big in signal out, will cause magnetic field of the goal signal and is submerged, in this case can be by the way that power supply is arranged
Adjusting circuit is compensating the positive magnetic field of three axis bucking coils generation just magnetic field of the goal, at this time: magnetic field of the goal intensity=magnetic field
+ three axis bucking coil magnetic field strength of sensor indicating value realizes the measurement of positive flux field intensity compensation.
The bidirectional compensating formula measuring device can allow magnetic field sensor to always work in best induction range, can not only expand
Machine with wide range improves the accuracy and stability of measured value, moreover it is possible to extend the service life of magnetic field sensor, have very big
Practicability and economy.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (5)
1. a kind of three axis bidirectional compensating formula magnetic field measuring devices, it is characterised in that: including three axis ring supports, three axis compensating lines
Circle, magnetic field sensor, power source regulating circuit integrates and pedestal, wherein the pedestal is hollow hexahedron, the three collars shape branch
Frame includes X-axis, Y-axis, Z axis pairwise orthogonal, is fixedly connected with six face central points of the pedestal, the three axis bucking coil is uniform
Three collar shape rack outer surfaces are wound in, the magnetic field sensor is mounted on three axis point of intersection, and the power source regulating circuit is integrated
Inside is equipped with battery and current regulating switch, and the power source regulating circuit integrated installation is in pedestal.
2. a kind of three axis bidirectional compensating formula magnetic field measuring device according to claim 1, it is characterised in that: the pedestal is
Cuboid, length, width and height are respectively 20cm, 5cm, 5cm, and manufacture material used has good supportive, nonmagnetic and high temperature resistant
Property.
3. a kind of three axis bidirectional compensating formula magnetic field measuring device according to claim 1, it is characterised in that: three axis is mended
Repaying coil winding-direction is clockwise or counterclockwise.
4. a kind of three axis bidirectional compensating formula magnetic field measuring device according to claim 1, it is characterised in that: the power supply tune
Economize on electricity road is integrated into cuboid, and length, width and height are respectively 5cm, 3cm, 3cm, and the current regulating switch is stepless adjusting switch, electricity
The series connection of the axis bucking coil both ends Chi Yusan.
5. a kind of three axis bidirectional compensating formula magnetic field measuring device according to claim 4, it is characterised in that: current regulation is opened
The controlled plant of pass is size of current and direction.
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| CN201910158483.0A CN109782198A (en) | 2019-03-04 | 2019-03-04 | A kind of three axis bidirectional compensating formula magnetic field measuring devices |
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| CN201910158483.0A CN109782198A (en) | 2019-03-04 | 2019-03-04 | A kind of three axis bidirectional compensating formula magnetic field measuring devices |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110286338A (en) * | 2019-06-13 | 2019-09-27 | 中国人民解放军国防科技大学 | Magnetic field modulation structure suitable for integral type triaxial magnetic sensor |
| CN113568053A (en) * | 2021-05-07 | 2021-10-29 | 浙江科技学院 | Magnetic field active compensation system and method controlled by mechanical arm |
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| JP2000146509A (en) * | 1998-11-12 | 2000-05-26 | Agency Of Ind Science & Technol | Measuring system of magnetic motion capture device |
| DE102007062862A1 (en) * | 2006-12-21 | 2008-07-10 | Micro-Epsilon Messtechnik Gmbh & Co. Kg | Method for determining position and change of position of measured object, involves arranging magnet in area of influence of sensor, which brings about change in permeability of foil |
| CN101526589A (en) * | 2008-03-04 | 2009-09-09 | 陈艳 | System and method for measuring magnetic field angle of magnet |
| CN105676151A (en) * | 2016-01-18 | 2016-06-15 | 华东师范大学 | Negative feedback type magnetic field sensor |
| CN106324687A (en) * | 2016-10-29 | 2017-01-11 | 西南石油大学 | Buried iron pipeline detection and accurate positioning method and device |
| CN108267701A (en) * | 2017-12-27 | 2018-07-10 | 中国船舶重工集团公司第七0研究所 | A kind of environment magnetic disturbance Active Compensation system for magnetic field reproduction coil |
| CN210155307U (en) * | 2019-03-04 | 2020-03-17 | 西南石油大学 | Three-axis bidirectional compensation type magnetic field measuring device |
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2019
- 2019-03-04 CN CN201910158483.0A patent/CN109782198A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000146509A (en) * | 1998-11-12 | 2000-05-26 | Agency Of Ind Science & Technol | Measuring system of magnetic motion capture device |
| DE102007062862A1 (en) * | 2006-12-21 | 2008-07-10 | Micro-Epsilon Messtechnik Gmbh & Co. Kg | Method for determining position and change of position of measured object, involves arranging magnet in area of influence of sensor, which brings about change in permeability of foil |
| CN101526589A (en) * | 2008-03-04 | 2009-09-09 | 陈艳 | System and method for measuring magnetic field angle of magnet |
| CN105676151A (en) * | 2016-01-18 | 2016-06-15 | 华东师范大学 | Negative feedback type magnetic field sensor |
| CN106324687A (en) * | 2016-10-29 | 2017-01-11 | 西南石油大学 | Buried iron pipeline detection and accurate positioning method and device |
| CN108267701A (en) * | 2017-12-27 | 2018-07-10 | 中国船舶重工集团公司第七0研究所 | A kind of environment magnetic disturbance Active Compensation system for magnetic field reproduction coil |
| CN210155307U (en) * | 2019-03-04 | 2020-03-17 | 西南石油大学 | Three-axis bidirectional compensation type magnetic field measuring device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110286338A (en) * | 2019-06-13 | 2019-09-27 | 中国人民解放军国防科技大学 | Magnetic field modulation structure suitable for integral type triaxial magnetic sensor |
| CN110286338B (en) * | 2019-06-13 | 2021-04-02 | 中国人民解放军国防科技大学 | Magnetic field modulation structure suitable for integral type triaxial magnetic sensor |
| CN113568053A (en) * | 2021-05-07 | 2021-10-29 | 浙江科技学院 | Magnetic field active compensation system and method controlled by mechanical arm |
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