CN210155307U - Three-axis bidirectional compensation type magnetic field measuring device - Google Patents
Three-axis bidirectional compensation type magnetic field measuring device Download PDFInfo
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- CN210155307U CN210155307U CN201920265718.1U CN201920265718U CN210155307U CN 210155307 U CN210155307 U CN 210155307U CN 201920265718 U CN201920265718 U CN 201920265718U CN 210155307 U CN210155307 U CN 210155307U
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Abstract
The utility model provides a triaxial two-way compensation type magnetic field measuring device, which structurally comprises a triaxial annular bracket, a triaxial compensation coil, a magnetic field sensor, a power supply regulating circuit integration and a base; the three-axis annular support and the three-dimensional coordinate direction of the base are kept consistent and fixed, the three-axis compensation coil is uniformly wound on the outer surface of the three-axis annular support, the power supply adjusting circuit assembly is connected with two ends of the three-axis compensation coil, current for generating a compensation magnetic field is provided for the three-axis compensation coil according to different strength and directions of the magnetic field measured by the magnetic field sensor, and the size and the direction of the compensation magnetic field are adjusted; the magnetic field sensor is arranged in the central position inside the three-axis annular support, so that the magnetic field sensor can be effectively ensured to be in a stable magnetic field environment. The utility model discloses can effectively improve the not enough defect of measurement range of traditional magnetic field sensor, the indicating value is more stable accurate, and the demagnetization is rapid, can realize the rapid survey, has great development value.
Description
Technical Field
The utility model belongs to magnetic field intensity measuring device makes the field, concretely relates to triaxial two-way compensation formula magnetic field measuring device.
Background
In order to meet the measurement requirements of various complex magnetic field environments such as a weak magnetic field, a strong magnetic field and the like, equipment research and development personnel need to continuously develop new methods and processes to further improve the measurement precision of the magnetic field measurement instrument. At present, in most application environments, a magnetic field intensity is generally measured by placing a magnetic field sensor in a measured magnetic field environment, and directly acquiring, converting, processing and outputting a target magnetic field intensity signal to obtain a measurement result. The direct measurement mode has high requirements on the magnetic field sensor probe, and if the fluctuation range of an external magnetic field is large, excitation with large difference can be generated on the magnetic field sensor, so that the sensor error is increased, the probe has different sensitivities on different magnetic field strength magnetic field sensors, and the most effective and accurate magnetic field strength value can be obtained only if the magnetic field sensor probe is in the most appropriate sensitivity range. It is therefore also particularly necessary to design a compensation device that is adaptable to a variety of magnetic field sensors.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to present magnetic field intensity measuring instrument measuring range exist can not expand, the great problem of the violent error of external magnetic field environmental change under multiple magnetic field intensity measuring environment, provide a triaxial two-way compensation formula magnetic field intensity measuring device. The magnetic field intensity measuring device can be matched with magnetic field sensors with various specifications, the normal working state of the magnetic field sensors is not influenced, the measurement of various magnetic field intensities can be completed, and the measuring result is accurate, stable and reliable. In order to realize the compensation measurement function, the utility model discloses the technical scheme who takes as follows:
the utility model provides a triaxial two-way compensation formula magnetic field measuring device, includes that triaxial ring carrier, triaxial compensation coil, magnetic field sensor, power supply regulating circuit are integrated and the base, wherein, the base is hollow hexahedron, triaxial ring carrier includes two liang of quadrature in X axle, Y axle, Z axle, with six face central point fixed connection of base, triaxial compensation coil evenly twines in triaxial ring carrier surface, magnetic field sensor installs in triaxial intersection department, power supply regulating circuit is integrated inside to be equipped with battery and current regulation switch, power supply regulating circuit is integrated to be installed in the base.
Particularly, the three-dimensional coordinate directions of the three-axis annular support and the base are kept consistent and fixed, a plurality of circles of uniformly distributed groove tracks are arranged on the outer side of the support and used for mounting the three-axis compensation coil, and a uniform and stable compensation magnetic field can be rapidly generated in the three-axis annular support so as to offset or enhance the target magnetic field intensity in the external environment of the three-axis compensation coil; the power supply adjusting circuit assembly is connected with two ends of the three-axis compensation coil, and provides current for generating a compensation magnetic field for the three-axis compensation coil according to different magnitudes of the magnetic field measured by the magnetic field sensor, and adjusts the magnitude and the direction of the compensation magnetic field; the magnetic field sensor is arranged in the center of the interior of the three-axis annular support, and the distances from the inner surface of the three-axis annular support to the two ends of the three-axis annular support are equal, so that the magnetic field sensor can be effectively ensured to be in a stable magnetic field environment.
Furthermore, the base is a rectangular body, the length, the width and the height of the base are respectively 20cm, 5cm and 5cm, and the used manufacturing materials have good support property, non-magnetism and high-temperature resistance.
Further, the winding direction of the triaxial compensation coil is clockwise or counterclockwise.
Furthermore, the power supply regulating circuit is integrated into a cuboid, the length, the width and the height are respectively 5cm, 3cm and 3cm, the current regulating switch is a stepless regulating switch, and the battery is connected with two ends of the triaxial compensation coil in series.
Furthermore, the current adjusting switch is used for adjusting the current size and direction, the magnetic field intensity measuring device is placed in a measured target magnetic field environment before adjustment, firstly, a magnetic field sensor is used for carrying out rough measurement on the target magnetic field intensity to obtain a pre-estimated magnetic field intensity value, and a measurer (or software) makes a compensation decision whether the pre-estimated magnetic field intensity value exceeds the measuring range of the sensor or not according to rough measurement data.
The utility model provides a magnetic adjustment compensation type soft magnetic detection device which can realize the measurement of various magnetic field strengths; when the external environment magnetic field intensity is larger, the magnetic field intensity is preliminarily estimated, the power supply current is adjusted to enable the three-axis compensation coil to generate a uniform constant magnetic field with opposite directions, and the original magnetic field intensity is negatively fed back to offset, namely the magnetic field intensity measured by the magnetic field sensor is the magnetic field intensity obtained by subtracting the magnetic field intensity of the three-axis compensation coil from the external magnetic field intensity, so that the magnetic field sensor can work in a range with the highest sensitivity, errors are effectively controlled, and the high-intensity magnetic field compensation function is further realized; on the contrary, when the external magnetic field intensity is smaller, the three-axis compensation coil is adjusted to generate a uniform constant magnetic field with the same direction as the external target magnetic field, and the positive feedback enhancement is carried out on the original magnetic field intensity, namely the magnetic field intensity measured by the magnetic field sensor is the external target magnetic field intensity plus the magnetic field intensity of the three-axis compensation coil, so that the magnetic field sensor works in the most stable and most sensitive range, the measurement error can be effectively reduced, and the magnetic intensity compensation function is realized;
the utility model provides a triaxial two-way compensation formula magnetic field measuring device can use under multiple magnetic field intensity environment, low in manufacturing cost, and the compensation effect is obvious.
Drawings
Fig. 1 is the structure diagram of the three-axis integral compensation device of the present invention.
Fig. 2 is a schematic diagram of the compensation of the present invention.
In the above drawings, 1: a three-axis annular support; 2: a triaxial compensation coil; 3: a magnetic field sensor; 4: integrating a power supply regulating circuit; 5: a base.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, in order to realize the specific function of the two-way compensation type magnetic measuring device, the utility model adopts the following technical scheme: a magnetic-regulation compensation type soft magnetic detection device comprises a triaxial annular bracket 1, a triaxial compensation coil 2, a magnetic field sensor 3, a power supply regulating circuit integrated 4 and a base 5; selecting a three-axis annular support 1 matched with the size of the magnetic field sensor 3 according to the size of the magnetic field sensor, fixedly connecting each axis of the three-axis annular support 1 with a central point (a diagonal intersection point) of a corresponding surface of a base 5, winding the three-axis compensation coil 2 in a groove track of the three-axis annular support 1, and ensuring that the magnetic field sensor 3 is in a uniform constant magnetic field environment, wherein the magnetic field sensor 3 is fixedly installed at the three-axis intersection point position of the three-axis annular support 1 and needs to be kept at the geometric central position of the three-axis annular support 1 and has the same distance with the inner surface and two ends of the three-axis annular support 3; and the power supply regulating circuit assembly 4 is connected with the triaxial compensation coil 2 through a wire, so that the size and the direction of the power supply current of the coil can be regulated.
As shown in fig. 2, the working principle of the bidirectional compensation magnetic field measuring apparatus is further explained: the magnetic field intensity measuring device is arranged in a measured target magnetic field environment, firstly, a magnetic field sensor is used for carrying out rough measurement on the target magnetic field intensity to obtain a pre-estimated magnetic field intensity value, and a measurer (or software) makes a compensation decision whether the pre-estimated magnetic field intensity value exceeds the measuring range of the sensor according to rough measurement data:
1) when the strength of the roughly measured magnetic field exceeds the measuring range, the magnitude and the direction of the power supply current are adjusted to enable the three-axis compensation coil to generate a reverse magnetic field, negative compensation is carried out on the target strong magnetic field, and at the moment: the target magnetic field intensity = three-axis compensation coil magnetic field intensity + magnetic field sensor indication value, thereby completing negative compensation measurement;
2) when the target magnetic field is too weak and is not enough to cause the sensitive element of the magnetic field sensor to generate acquisition action, the noise error proportion in the output signal of the magnetic field sensor is very large, so that the target magnetic field signal is submerged, under the condition, the power supply regulating circuit can be arranged to enable the triaxial compensation coil to generate a forward magnetic field to perform forward compensation on the target magnetic field, and at the moment: and the target magnetic field intensity = the indication value of the magnetic field sensor + the magnetic field intensity of the three-axis compensation coil, so that the positive magnetic field intensity compensation measurement is realized.
This two-way compensation formula measuring device can let magnetic field sensor work all the time in best response scope, can not only enlarge the range scope, improves the degree of accuracy and the stability of measured value, can also prolong magnetic field sensor's life, has very big practicality and economic nature.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. The utility model provides a triaxial two-way compensation formula magnetic field measuring device which characterized in that: including triaxial ring carrier, triaxial compensation coil, magnetic field sensor, power supply regulating circuit integration and base, wherein, the base is hollow hexahedron, triaxial ring carrier include two liang of quadrature in X axle, Y axle, Z axle, with six face central points fixed connection of base, triaxial compensation coil evenly twines in triaxial ring carrier surface, magnetic field sensor installs in triaxial intersection department, power supply regulating circuit integration inside is equipped with battery and current regulation switch, power supply regulating circuit integration installs in the base.
2. The three-axis bidirectional compensation type magnetic field measuring device according to claim 1, wherein: the base is a cuboid, the length, the width and the height of the base are respectively 20cm, 5cm and 5cm, and the used manufacturing materials have good support property, non-magnetism and high temperature resistance.
3. The three-axis bidirectional compensation type magnetic field measuring device according to claim 1, wherein: the winding direction of the triaxial compensation coil is clockwise or anticlockwise.
4. The three-axis bidirectional compensation type magnetic field measuring device according to claim 1, wherein: the power supply regulating circuit is integrated into a cuboid, the length, the width and the height are respectively 5cm, 3cm and 3cm, the current regulating switch is a stepless regulating switch, and a battery is connected with two ends of the triaxial compensation coil in series.
5. The three-axis bi-directional compensation type magnetic field measuring device according to claim 4, wherein: the current regulating switch regulates the current according to the magnitude and direction of the current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920265718.1U CN210155307U (en) | 2019-03-04 | 2019-03-04 | Three-axis bidirectional compensation type magnetic field measuring device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920265718.1U CN210155307U (en) | 2019-03-04 | 2019-03-04 | Three-axis bidirectional compensation type magnetic field measuring device |
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| CN210155307U true CN210155307U (en) | 2020-03-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109782198A (en) * | 2019-03-04 | 2019-05-21 | 西南石油大学 | A kind of three axis bidirectional compensating formula magnetic field measuring devices |
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- 2019-03-04 CN CN201920265718.1U patent/CN210155307U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109782198A (en) * | 2019-03-04 | 2019-05-21 | 西南石油大学 | A kind of three axis bidirectional compensating formula magnetic field measuring devices |
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Granted publication date: 20200317 |