Hall probe sensing area positioning device, magnetic field measurement method and system

Abstract

The present disclosure provides a device for positioning the sensing area of ​​a Hall probe, which can be applied to the field of magnetic field measurement technology. The device includes: a support base, including a top plate, a bottom plate, and two side plates arranged on both sides of the top plate and the bottom plate, the bottom plate is used to support a fine-tuning mechanism, a standard target ball is fixed on the top plate, and a conical standard magnet is fixed under the top plate; the fine-tuning mechanism is used to adjust the position of the Hall probe with the maximum field strength in the sensing area of ​​the Hall probe as the target, and obtain the target sensing position of the Hall probe; the positioning base is used to position the Hall probe support tooling; the Hall probe support tooling is used to support and fix the Hall probe; and multiple groups of opposing edge measurement sensors are used to measure the position of the Hall probe support tooling. The present disclosure also provides a magnetic field measurement method and system.

Description

Technical Field

[0001] The present disclosure relates to the field of magnetic field measurement, and in particular to a Hall probe sensing area positioning device, a magnetic field measurement method and a system. Background Art

[0002] The most commonly used measurement method for measuring the magnetic field of a magnet is Hall point measurement. When using Hall point measurement to measure the magnetic field, the Hall probe sensing area must be accurately positioned to ensure the accuracy of the magnetic field measurement.

[0003] At present, the commonly used positioning method is to use a laser tracker for positioning. A 0.5-inch ceramic target ball is installed at the end face of the Hall probe fixture. The Hall probe sensing area is positioned by measuring the target ball position and converting the corresponding fixture size. When using a laser tracker for positioning, since the minimum measurement accuracy of the laser tracker is 15um+6um / m, and there are errors in the Hall probe packaging and support fixture assembly, the Hall probe accuracy that can be positioned according to this method can reach 50um. However, when the magnetic field performance test requirements are high, the 50um Hall probe positioning accuracy can no longer meet the test requirements, and the Hall probe positioning accuracy needs to be increased to more than 10um. In addition, when measuring the magnetic field of a small-aperture magnet, when a 0.5-inch ceramic target ball is used for positioning and alignment, the Hall probe and the 0.5-inch ceramic target ball fixture have occupied a large part of the space, which occupies a large amount of test space and cannot meet the needs of on-site measurement. Summary of the invention

[0004] In view of the above problems, the present disclosure provides a Hall probe sensing area positioning device, a magnetic field measurement method and a system.

[0005] According to a first aspect of the present disclosure, a Hall probe sensing area positioning device is provided, comprising: a supporting base, a conical standard magnet, a Hall probe, a Hall probe supporting tooling, a positioning base, a fine-tuning mechanism, a standard target ball, and a plurality of groups of opposing-type edge measurement sensors;

[0006] A support base, comprising a top plate, a bottom plate and two side plates arranged on both sides of the top plate and the bottom plate, wherein the bottom plate is used to support the fine-tuning mechanism, the standard target ball is fixed on the top plate, and the conical standard magnet is fixed under the top plate;

[0007] A fine adjustment mechanism is provided on the bottom plate, and is used to adjust the position of the Hall probe with the maximum field strength in the Hall probe sensing area as the target, so as to obtain the target sensing position of the Hall probe, wherein the Hall probe is used to detect the field strength of the conical standard magnet;

[0008] A positioning base, arranged on the fine-tuning mechanism, for positioning the Hall probe supporting tooling;

[0009] A Hall probe supporting tooling is arranged on the positioning base and is used to support the Hall probe;

[0010] A plurality of groups of through-beam edge measurement sensors are distributed around the Hall probe supporting fixture and are used to measure the position of the Hall probe supporting fixture.

[0011] According to an embodiment of the present disclosure, a cross line is engraved on the front end of the positioning base for positioning the Hall probe supporting tooling.

[0012] According to an embodiment of the present disclosure, the positioning base includes two support platforms of different heights, two brackets are arranged in parallel on the relatively lower one of the two support platforms of different heights, and the Hall probe supporting tooling is arranged on the two brackets.

[0013] A second aspect of the present disclosure provides a magnetic field measurement method for a magnetic field measurement system, wherein the magnetic field measurement system comprises a three-coordinate measuring machine, a Hall probe sensing area positioning device as described in the first aspect, a Hall point measurement platform, and a collimating telescope, wherein the Hall probe sensing area positioning device is arranged on the three-coordinate measuring machine, and a Hall point measurement platform and a collimating telescope are arranged at two ends of the three-coordinate measuring machine, respectively. The method comprises:

[0014] Determine the target Hall probe sensing area position, where the field strength is the largest;

[0015] The origin of the Hall point measurement platform coordinate system is translated to the target Hall probe sensing area position to create a Hall probe sensing area coordinate system;

[0016] In the Hall probe sensing area coordinate system, using a three-coordinate measuring machine to measure the coordinates of the standard target sphere;

[0017] Installing the Hall probe support fixture on the Hall point measurement platform, moving the Hall point measurement platform to position the current Hall probe sensing area to the target Hall probe sensing area, and recording the coordinates of the current Hall point measurement platform;

[0018] By translating the origin of the Hall probe sensing area coordinate system to the mechanical center of the magnet being measured, a mechanical center coordinate system of the magnet being measured is created;

[0019] Measuring the coordinates of the standard target sphere in the mechanical center coordinate system of the magnet being measured;

[0020] The Hall point measurement platform is moved with the goal of coinciding the Hall probe sensing area with the mechanical center of the magnet to be measured.

[0021] According to an embodiment of the present disclosure, determining the position of the target Hall probe sensing area includes:

[0022] Use a three-coordinate measuring machine to measure and establish the Hall point measurement platform coordinate system;

[0023] Adjust the fine-tuning mechanism so that the Hall probe is located at a target sensing position, and the field strength of the standard magnet detected by the Hall probe sensing area at the target sensing position is maximum;

[0024] The installation position of the conical standard magnet is measured by a three-dimensional coordinate measuring machine, and the installation position of the conical standard magnet is the position of the target Hall probe sensing area.

[0025] According to an embodiment of the present disclosure, moving the Hall point measurement platform with the goal of aligning the Hall probe sensing area with the mechanical center of the magnet under test comprises:

[0026] Adding the coordinates of the standard target sphere measured by the three-dimensional measuring machine, the coordinates of the Hall point measurement platform and the coordinates of the standard target sphere measured in the mechanical center coordinate system of the magnet to be measured, to obtain the moving distance of the Hall point measurement platform;

[0027] The Hall point measurement platform is moved according to the moving distance of the Hall point measurement platform.

[0028] According to an embodiment of the present disclosure, the step of translating the origin of the Hall point measurement platform coordinate system to the target Hall probe sensing area position before creating the Hall probe sensing area coordinate system includes:

[0029] Keep the eyepiece crosshairs of the collimating telescope coincident with the center crosshairs of the end of the Hall probe support device and the front end crosshairs of the positioning base;

[0030] The positions of the multiple groups of through-beam edge detectors are recorded to obtain target positions of the multiple groups of through-beam edge detectors.

[0031] According to an embodiment of the present disclosure, the method further includes:

[0032] At least one of the coordinates of the Hall point measurement platform coordinate system, the Hall probe sensing area coordinate system, and the standard target sphere is saved.

[0033] A third aspect of the present disclosure provides a magnetic field measurement system, comprising:

[0034] The Hall probe sensing area positioning device as described in the first aspect is arranged on a three-dimensional coordinate measuring machine and is used to determine the position of the target Hall probe sensing area, where the field intensity at the position of the target Hall probe sensing area is the largest;

[0035] A Hall point measurement platform, arranged at one end of the three-dimensional coordinate measuring machine, for supporting a Hall probe supporting fixture;

[0036] A collimating telescope, arranged at the other end of the three-dimensional coordinate measuring machine, for positioning and aligning the Hall probe supporting fixture;

[0037] A data processing device, used for translating the origin of the Hall point measurement platform coordinate system to the target Hall probe sensing area position, and creating a Hall probe sensing area coordinate system;

[0038] A three-coordinate measuring machine, used to measure the coordinates of a standard target sphere in the coordinate system of the Hall probe sensing area;

[0039] A moving device, used for installing the Hall probe supporting tooling on the Hall point measurement platform, and moving the Hall point measurement platform to position the current Hall probe sensing area to the target Hall probe sensing area;

[0040] The data processing device is also used to record the coordinates of the current Hall point measurement platform; create the mechanical center coordinate system of the magnet to be measured by translating the origin of the Hall probe sensing area coordinate system to the mechanical center of the magnet to be measured; and measure the coordinates of the standard target sphere in the mechanical center coordinate system of the magnet to be measured;

[0041] The moving device is also used to move the Hall point measurement platform with the goal of coinciding the Hall probe sensing area with the mechanical center of the magnet to be measured. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The above contents and other objects, features and advantages of the present disclosure will become more apparent through the following description of the embodiments of the present disclosure with reference to the accompanying drawings, in which:

[0043] Figure 1 A schematic diagram of a Hall probe sensing area positioning device according to an embodiment of the present disclosure is shown;

[0044] Figure 2 The structure diagram of the fine adjustment mechanism according to the embodiment of the present disclosure is schematically shown;

[0045] Figure 3 A schematic diagram of a positioning base according to an embodiment of the present disclosure is shown;

[0046] Figure 4A The assembly diagram of the Hall probe support tooling according to the embodiment of the present disclosure is schematically shown;

[0047] Figure 4B The installation position diagram of the Hall probe supporting tooling according to the embodiment of the present disclosure is schematically shown;

[0048] Figure 5 The schematic diagram shows the installation structure of the through-beam edge measurement sensor according to the embodiment of the present disclosure;

[0049] Figure 6 The structure diagram of the magnetic field measurement system according to the embodiment of the present disclosure is schematically shown;

[0050] Figure 7 The flowchart of the magnetic field measurement method according to the embodiment of the present disclosure is schematically shown. DETAILED DESCRIPTION

[0051] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present disclosure. In the following detailed description, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments of the present disclosure. However, it is apparent that one or more embodiments may also be implemented without these specific details. In addition, in the following description, descriptions of known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present disclosure.

[0052] The terms used herein are only for describing specific embodiments and are not intended to limit the present disclosure. The terms "comprise", "include", etc. used herein indicate the existence of the features, steps, operations and / or components, but do not exclude the existence or addition of one or more other features, steps, operations or components.

[0053] All terms (including technical and scientific terms) used herein have the meanings commonly understood by those skilled in the art unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of this specification and should not be interpreted in an idealized or overly rigid manner.

[0054] When using expressions such as "at least one of A, B, and C, etc.", they should generally be interpreted according to the meaning of the expression commonly understood by those skilled in the art (for example, "a system having at least one of A, B, and C" should include but is not limited to a system having A alone, B alone, C alone, A and B, A and C, B and C, and / or A, B, C, etc.).

[0055] When using a laser tracker for positioning, the minimum measurement accuracy of the laser tracker is 15um+6um / m, and there are errors in the packaging of the Hall probe and the assembly of the supporting tooling. At present, the Hall probe accuracy that can be positioned according to this method can reach 50um. However, when the requirements for magnetic field performance testing are high, the 50um Hall probe positioning accuracy can no longer meet the test requirements, and the positioning accuracy of the Hall probe needs to be increased to more than 10um. In addition, when measuring the magnetic field of a small-aperture magnet, when a 0.5-inch ceramic target ball is used for positioning and alignment, the Hall probe and the 0.5-inch ceramic target ball fixture have already occupied a large part of the space, which occupies a large amount of test space and cannot meet the needs of on-site measurement.

[0056] In response to the above-mentioned problem of poor positioning accuracy and the inability to test small-aperture magnets, the embodiments of the present disclosure provide a Hall probe sensing area positioning device, a magnetic field measurement method and a system, which can achieve high-precision positioning of the Hall probe sensing area, reduce the errors introduced by the Hall probe packaging and the probe support tooling installation; and reduce the size of the Hall probe support tooling to solve the problem that small-aperture magnets cannot be tested.

[0057] Figure 1 The structure diagram of the Hall probe sensing area positioning device according to an embodiment of the present disclosure is schematically shown.

[0058] like Figure 1 As shown, the Hall probe sensing area positioning device 10 includes a supporting base 11, a conical standard magnet 12, a Hall probe 13, a Hall probe supporting tooling 14, a positioning base 15, a fine-tuning mechanism 16, a standard target ball 17 and a plurality of groups of opposing edge measurement sensors 18.

[0059] The support base 11 includes a top plate, a bottom plate and two side plates arranged on both sides of the top plate and the bottom plate. The bottom plate is used to support the fine-tuning mechanism 16. The standard target ball 17 is fixed on the top plate, and the conical standard magnet 12 is fixed under the top plate.

[0060] The fine adjustment mechanism 16 is arranged on the bottom plate, and is used to adjust the position of the Hall probe 13 with the maximum field strength in the sensing area of ​​the Hall probe 13 as the target, and obtain the target sensing position of the Hall probe 13. The Hall probe 13 is used to detect the field strength of the conical standard magnet 12. Figure 2 As shown, the fine-tuning mechanism 16 can be adjusted in five directions.

[0061] The positioning base 15 is disposed on the fine-tuning mechanism 16 and is used to position the Hall probe support fixture 14. In some embodiments, a crosshair is engraved on the front end of the positioning base 15 to position the Hall probe sensing area support fixture 14. Figure 3As shown, the positioning base 15 includes two support platforms of different heights, two brackets are arranged in parallel on the relatively lower support platform of the two support platforms of different heights, and the Hall probe supporting tooling 14 is arranged on the two brackets.

[0062] The Hall probe support fixture 14 is arranged on the positioning base 15, and is used to support and fix the Hall probe 13. In some optional embodiments, the Hall probe support fixture 14 can be designed in a square bar shape, and a cross line can be engraved on the front end to facilitate the positioning and adjustment of the collimating telescope, and the Hall probe 13 is installed at the front end. Figure 4A and Figure 4B As shown, after the Hall probe supporting fixture 14 is assembled on the positioning base 15 , the sensing area of ​​the Hall probe 13 located on the Hall probe supporting fixture 14 will be directly below the conical standard magnet 12 .

[0063] A plurality of groups of through-beam edge measurement sensors 18 are distributed around the Hall probe support fixture 14 and are used to measure the position of the Hall probe support fixture 14. Figure 5 As shown, five groups of through-beam edge measurement sensors 18 are taken as an example. Five groups of through-beam edge measurement sensors 18 are respectively installed on the positioning base 15. The repeated positioning accuracy of the through-beam edge measurement sensors 18 can reach 5um. The through-beam edge measurement sensors 18 can be used to accurately measure and position the Hall probe support fixture 14.

[0064] It is understandable that, in order to achieve the purpose of accurately adjusting and positioning the Hall probe support fixture 14 , those skilled in the art may set any number of groups of through-beam edge measurement sensors 18 , and the embodiments of the present disclosure do not impose any limitation on this.

[0065] According to the embodiment of the present disclosure, the characteristic that the magnetic field strength is the largest at the top of the conical standard magnet 12 is used to adjust the fine adjustment mechanism 16 below so that the sensing area of ​​the Hall probe 13 finds the maximum magnetic field strength, and this position is the optimal sensing position of the sensing area of ​​the Hall probe 13. Subsequently, a three-coordinate measuring machine can be used to measure and locate the optimal sensing position, and the optimal sensing position can be guided to the standard target sphere 17 through coordinate conversion.

[0066] Figure 6 The structure diagram of the magnetic field measurement system according to an embodiment of the present disclosure is schematically shown.

[0067] like Figure 6 As shown, the magnetic field measurement system includes a three-dimensional coordinate measuring machine 20, a Hall point measurement platform 30, a collimating telescope 40, Figures 1 to 5 The Hall probe sensing area positioning device 10, as well as the data processing device (not shown) and the moving device (not shown) are shown. The Hall probe sensing area positioning device 10 is arranged on a three-dimensional coordinate measuring machine 20, and a Hall point measurement platform 30 and a collimating telescope 40 are respectively arranged at both ends of the three-dimensional coordinate measuring machine 20.

[0068] The device 10 for measuring the sensing area of ​​the Hall probe is arranged on the three-dimensional coordinate measuring machine 20, and is used to determine the sensing area position of the target Hall probe 13, and the field strength at the sensing area position of the target Hall probe is the largest. The Hall point measurement platform 30 is arranged at one end of the three-dimensional coordinate measuring machine 20, and an extension rod is arranged on the Hall point measurement platform 30, and the end of the extension rod can be used to support the Hall probe support fixture 14. The collimating telescope 40 is arranged at the other end of the three-dimensional coordinate measuring machine 20, and is used to position and align the Hall probe support fixture 14. The data processing device is used to translate the origin of the coordinate system A1 of the Hall point measurement platform 30 to the sensing area position of the Hall probe 13, and create the sensing area coordinate system A2 of the Hall probe 13. The three-dimensional coordinate measuring machine 20 is used to measure the coordinate P1 of the standard target ball 17 under the sensing area coordinate system A2 of the Hall probe 13; the moving device is used to install the Hall probe support fixture 14 on the Hall point measurement platform 30, and move the Hall point measurement platform to position the current Hall probe sensing area position to the target Hall probe sensing area position. The data processing device is also used to record the coordinate P2 of the current Hall point measurement platform 30, and to create the mechanical center coordinate system A3 of the measured magnet by translating the origin of the Hall probe 13 sensing area coordinate system A2 to the mechanical center of the measured magnet. Under the mechanical center coordinate system A3 of the measured magnet, the coordinate P3 of the standard target sphere 17 is measured. The moving device is also used to move the Hall point measurement platform 30 with the Hall probe 13 sensing area and the mechanical center of the measured magnet as the goal of coinciding.

[0069] According to the embodiment of the present disclosure, since the probe rod of the Hall probe 13 installed on the Hall point measurement platform 30 is very long and has a cantilever structure, a non-contact method (a through-beam edge measurement sensor 18) can be used to achieve precise positioning of the Hall probe 13 after it is installed on the Hall point measurement platform 30.

[0070] Figure 7 The flowchart of the magnetic field measurement method according to the embodiment of the present disclosure is schematically shown.

[0071] like Figure 7 As shown, the magnetic field measurement method of this embodiment includes operations S710 to S230.

[0072] In operation S710 , a target Hall probe sensing area position is determined.

[0073] In some embodiments, determining the target Hall probe sensing area position includes: using a three-coordinate measuring machine to measure and establish a Hall point measurement platform coordinate system A1; adjusting a fine-tuning mechanism so that the Hall probe is located at the target sensing position, and the field strength of the standard magnet detected by the Hall probe sensing area at the target sensing position is the largest; using a three-coordinate measuring machine to measure the installation position of the conical standard magnet, and the installation position of the conical standard magnet is the target Hall probe sensing area position.

[0074] It can be understood that after the Hall point measurement platform coordinate system A1 is established, the Hall probe sensing area positioning device can be adjusted to be consistent with the movement direction of the Hall point measurement platform and fixed in the Hall point measurement platform coordinate system A1.

[0075] In some embodiments, before measuring the installation position of the conical standard magnet using a three-dimensional coordinate measuring machine, the conical standard magnet can be removed from the Hall probe sensing area positioning device to avoid the magnetic field of the conical standard magnet affecting the position measurement. Then, the installation position of the conical standard magnet is measured using a three-dimensional coordinate measuring machine.

[0076] In operation S720, the origin of the Hall point measurement platform coordinate system A1 is translated to the target Hall probe sensing area position to create the Hall probe sensing area coordinate system A2.

[0077] In some embodiments, the origin of the Hall point measurement platform coordinate system A1 is translated to the target Hall probe sensing area position, and before the Hall probe sensing area coordinate system A2 is created, the steps include: keeping the eyepiece crosshairs of the collimating telescope coincident with the center crosshairs at the end of the Hall probe support device and the front end crosshairs of the positioning base; and recording the positions of multiple groups of opposing edge detectors to obtain the target positions of multiple groups of opposing edge detectors.

[0078] In operation S730 , a coordinate measuring machine is used to measure a coordinate P1 of a standard target sphere in a Hall probe sensing area coordinate system A2 .

[0079] The position of the standard target ball will be used as the common point for the conversion between the position of the magnet to be measured and the position of the Hall point measurement platform. The coordinates of the common point P1 (X 公共点1 ,Y 公共点1 ,Z 公共点1 ).

[0080] In operation S740, the Hall probe support fixture is installed on the Hall point measurement platform, the Hall point measurement platform is moved to position the current Hall probe sensing area to the target Hall probe sensing area, and the coordinates P2 of the current Hall point measurement platform are recorded.

[0081] Specifically, the collimating telescope and the through-beam edge measurement sensor can be used to move the Hall point measurement platform, and the Hall probe support fixture installed on the Hall point measurement platform can be repositioned to the initial installation position. At this position, the current Hall probe sensing area position is the target Hall probe sensing area position. After the Hall probe support fixture is reset, the current Hall point measurement platform position P2 (X 点测平台 , Y 点测平台 , Z 点测平台 ).

[0082] In operation S750, a mechanical center coordinate system A3 of the magnet to be measured is created by translating the origin of the Hall probe sensing area coordinate system A2 to the mechanical center of the magnet to be measured.

[0083] It is understandable that before operation S750, it is usually necessary to use a three-dimensional coordinate measuring machine to align and position the magnet to be measured, and then translate the origin of the Hall probe sensing area coordinate system A2 to the mechanical center of the magnet to be measured to create the mechanical center coordinate system A3 of the magnet to be measured.

[0084] In operation S760, the coordinates P3 of the standard target sphere are measured in the measured magnet mechanical center coordinate system A3.

[0085] In an optional embodiment, a three-coordinate measurement file can be saved. The three-coordinate measurement file may include at least one of the Hall point measurement platform coordinate system A1, the Hall probe sensing area coordinate system A2, and the coordinate P1 of the standard target ball. By saving the three-coordinate measurement file, in the subsequent magnetic field measurement process, it is only necessary to align and position the magnet to be measured under the measurement file, establish the mechanical center coordinate system A3 of the magnet to be measured by translating the Hall probe sensing area coordinate system A2, re-measure the position of the standard target ball under the mechanical center coordinate system A3 of the magnet to be measured, and record the target ball coordinate value P3 (X 公共点2 ,Y 公共点2 ,Z 公共点2 ).

[0086] In operation S770 , the Hall point measurement platform is moved with the goal of aligning the Hall probe sensing area with the mechanical center of the magnet to be measured.

[0087] In some embodiments, with the goal of coinciding the sensing area of ​​the Hall probe with the mechanical center of the magnet being measured, moving the Hall point measurement platform includes: adding the coordinates P1 of the standard target sphere, the coordinates P2 of the Hall point measurement platform, and the coordinates P3 of the standard target sphere to obtain the moving distance of the Hall point measurement platform; and moving the Hall point measurement platform according to the moving distance of the Hall point measurement platform.

[0088] It can be understood that the moving distance of the X axis is X = X 点测平台 + X 公共点2 + X 公共点1 , the moving distance of the Y axis is Y=Y 测量平台 + Y 公共点2 + Y 公共点1 , the moving distance of the Z axis Z = Z 测量平台 + Z 公共点2 + Z 公共点1 .

[0089] According to a Hall probe sensing area positioning device, magnetic field measurement method and system provided by the embodiments of the present disclosure, the positioning accuracy of the Hall probe sensing area is less than 10um, which not only reduces the error introduced by the Hall probe packaging and the probe support tooling installation, and improves the accuracy of measuring the Hall probe sensing area, but also broadens the effective measurement area of ​​small-aperture magnets by reducing the size of the Hall probe support tooling, thereby realizing magnetic field measurement within its effective range.

[0090] The flow charts and block diagrams in the accompanying drawings illustrate the possible architecture, functions and operations of the systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each box in the flow chart or block diagram can represent a module, a program segment, or a part of a code, and the above-mentioned module, program segment, or a part of a code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram or flow chart, and the combination of the boxes in the block diagram or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0091] It will be appreciated by those skilled in the art that the features described in the various embodiments and / or claims of the present disclosure may be combined and / or combined in a variety of ways, even if such combinations and / or combinations are not explicitly described in the present disclosure. In particular, the features described in the various embodiments and / or claims of the present disclosure may be combined and / or combined in a variety of ways without departing from the spirit and teachings of the present disclosure. All of these combinations and / or combinations fall within the scope of the present disclosure.

[0092] The embodiments of the present disclosure are described above. However, these embodiments are only for illustrative purposes and are not intended to limit the scope of the present disclosure. Although the embodiments are described above separately, this does not mean that the measures in the various embodiments cannot be used in combination to advantage. The scope of the present disclosure is defined by the attached claims and their equivalents. Without departing from the scope of the present disclosure, those skilled in the art may make a variety of substitutions and modifications, which should all fall within the scope of the present disclosure.

Claims

1. A Hall probe sensing area positioning device, characterized in that: include: Support base, conical standard magnet, Hall probe, Hall probe support fixture, positioning base, fine adjustment mechanism, standard target ball and multiple sets of through-beam edge measurement sensors; A support base, comprising a top plate, a bottom plate and two side plates arranged on both sides of the top plate and the bottom plate, wherein the bottom plate is used to support the fine-tuning mechanism, the standard target ball is fixed on the top plate, and the conical standard magnet is fixed under the top plate; A fine adjustment mechanism is provided on the bottom plate, and is used to adjust the position of the Hall probe with the maximum field strength in the Hall probe sensing area as the target, so as to obtain the target sensing position of the Hall probe, wherein the Hall probe is used to detect the field strength of the conical standard magnet; A positioning base, arranged on the fine-tuning mechanism, for positioning the Hall probe supporting tooling; A Hall probe supporting tool is arranged on the positioning base and is used to support and fix the Hall probe; A plurality of groups of through-beam edge measurement sensors are distributed around the Hall probe supporting fixture and are used to measure the position of the Hall probe supporting fixture.

2. The device according to claim 1, characterized in that A cross line is engraved on the front end of the positioning base for positioning the Hall probe supporting tooling.

3. The device according to claim 1, characterized in that The positioning base comprises two support platforms of different heights, two brackets are arranged in parallel on a relatively lower support platform of the two support platforms of different heights, and the Hall probe supporting tooling is arranged on the two brackets.

4. A magnetic field measurement method, characterized in that: Used in a magnetic field measurement system, the magnetic field measurement system comprises a three-coordinate measuring machine, a Hall probe sensing area positioning device according to any one of claims 1 to 3, a Hall point measurement platform and a collimating telescope, the Hall probe sensing area positioning device is arranged on the three-coordinate measuring machine, and the Hall point measurement platform and the collimating telescope are respectively arranged at two ends of the three-coordinate measuring machine, the method comprises: Determine the target Hall probe sensing area position, where the field strength is the largest; The origin of the Hall point measurement platform coordinate system is translated to the target Hall probe sensing area position to create a Hall probe sensing area coordinate system; In the Hall probe sensing area coordinate system, using the three-coordinate measuring machine to measure the coordinates of the standard target sphere; Installing the Hall probe support fixture on the Hall point measurement platform, moving the Hall point measurement platform to position the current Hall probe sensing area to the target Hall probe sensing area, and recording the coordinates of the current Hall point measurement platform; By translating the origin of the Hall probe sensing area coordinate system to the mechanical center of the magnet being measured, a mechanical center coordinate system of the magnet being measured is created; Measuring the coordinates of the standard target sphere in the mechanical center coordinate system of the magnet being measured; The Hall point measurement platform is moved with the goal of coinciding the Hall probe sensing area with the mechanical center of the magnet to be measured.

5. The device according to claim 4, characterized in that Determining the target Hall probe sensing area position includes: Use a three-coordinate measuring machine to measure and establish the Hall point measurement platform coordinate system; Adjust the fine-tuning mechanism so that the Hall probe is located at a target sensing position, and the field strength of the standard magnet detected by the Hall probe sensing area at the target sensing position is maximum; The installation position of the conical standard magnet is measured by a three-dimensional coordinate measuring machine, and the installation position of the conical standard magnet is the position of the target Hall probe sensing area.

6. The device according to claim 4, characterized in that The moving of the Hall point measurement platform with the goal of aligning the Hall probe sensing area with the mechanical center of the magnet under test comprises: Adding the coordinates of the standard target sphere measured by the three-dimensional coordinate measuring machine, the coordinates of the Hall point measurement platform, and the coordinates of the standard target sphere measured in the mechanical center coordinate system of the magnet to be measured, to obtain the moving distance of the Hall point measurement platform; The Hall point measurement platform is moved according to the moving distance of the Hall point measurement platform.

7. The device according to claim 4, characterized in that The step of translating the origin of the Hall point measurement platform coordinate system to the target Hall probe sensing area position and before creating the Hall probe sensing area coordinate system includes: Keep the eyepiece crosshairs of the collimating telescope coincident with the center crosshairs of the end of the Hall probe support device and the front end crosshairs of the positioning base; The positions of the multiple groups of through-beam edge detectors are recorded to obtain target positions of the multiple groups of through-beam edge detectors.

8. The device according to claim 7, characterized in that The method further comprises: At least one of the coordinates of the Hall point measurement platform coordinate system, the Hall probe sensing area coordinate system, and the standard target sphere is saved.

9. A magnetic field measurement system, characterized in that: include: The Hall probe sensing area positioning device according to any one of claims 1 to 3, arranged on a three-dimensional coordinate measuring machine, is used to determine the position of the target Hall probe sensing area, wherein the field strength at the position of the target Hall probe sensing area is the largest; A Hall point measurement platform, arranged at one end of the three-dimensional coordinate measuring machine, for supporting a Hall probe supporting fixture; The collimating telescope is arranged at the other end of the three-dimensional coordinate measuring machine and is used for positioning and aligning the Hall probe supporting fixture. A data processing device, used for translating the origin of the Hall point measurement platform coordinate system to the target Hall probe sensing area position, and creating a Hall probe sensing area coordinate system; A three-coordinate measuring machine, used to measure the coordinates of a standard target sphere in the coordinate system of the Hall probe sensing area; A moving device, used for installing the Hall probe supporting tooling on the Hall point measurement platform, and moving the Hall point measurement platform to position the current Hall probe sensing area to the target Hall probe sensing area; The data processing device is also used to record the coordinates of the current Hall point measurement platform; create the mechanical center coordinate system of the magnet to be measured by translating the origin of the Hall probe sensing area coordinate system to the mechanical center of the magnet to be measured; and measure the coordinates of the standard target sphere in the mechanical center coordinate system of the magnet to be measured; The moving device is also used to move the Hall point measurement platform with the goal of coinciding the Hall probe sensing area with the mechanical center of the magnet to be measured.

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