Rotary table device for accurately measuring magnetic field intensity

Abstract

The utility model provides a rotary table device for accurately measuring the magnetic field intensity, and belongs to the technical field of magnetic testing, and the rotary table device specifically comprises a rotary table body, at least one group of magnetometer probes, N laser targets distributed along the circumference of the rotary table, a laser sensor and a concentrator. Triggering a magnetometer probe to carry out data acquisition; the rotary table device for measuring the magnetic field intensity is simple in structure principle, and can effectively improve the data acquisition efficiency of the rotary table device for measuring the magnetic field intensity.

Description

Technical Field

[0001] The present invention relates to the field of magnetic testing technology, and in particular to a turntable device for accurately measuring magnetic field strength. Background Art

[0002] At present, the magnetic field strength test of the equatorial mapping method in the geomagnetic field is a very efficient method. Because of its low cost, clear principle and controllable test error, it has been widely promoted. However, when using the equatorial mapping method to test the magnetic field strength, it is necessary to rotate the product under test 360 degrees and sample once every 10 degrees (20 degrees). Currently, the product under test is rotated manually, and the user stops and manually clicks the collection button after every 10 degrees (20 degrees). This process is not only laborious but also inefficient. Human push will also result in inaccurate positioning, and the collected data is not continuous data. Therefore, there is a need for a magnetic test turntable that can automatically complete the test and improve efficiency. Utility Model Content

[0003] Therefore, in order to overcome the above-mentioned shortcomings of the prior art, the present invention provides a turntable device for accurately measuring magnetic field strength, so as to solve the high labor cost and improve the continuity and accuracy of data collection.

[0004] In order to achieve the above object, the present invention provides the following technical solution: a turntable device for accurately measuring magnetic field strength, characterized in that it includes:

[0005] The turntable body is used to carry the product to be tested and can rotate 360° horizontally along the vertical axis;

[0006] At least one set of magnetometer probes, each of which is arranged on the same horizontal plane as the center of the product under test, and is used to measure the magnetic induction intensity of the product under test;

[0007] N laser targets, the N laser targets are arranged on the circumference of the turntable body at intervals of 360 / N degrees, and the laser targets are used for laser positioning;

[0008] a laser sensor, arranged at the same horizontal plane as the laser target, for detecting the laser target signal and triggering the magnetometer probe to collect data;

[0009] A hub is connected to the magnetometer probe and the laser sensor, and is used to receive signals from the magnetometer probe and the laser sensor to achieve mutual communication between the magnetometer probe and the laser sensor.

[0010] Specifically, the turntable device includes 36 laser targets, and the 36 laser targets are arranged on the circumference of the turntable body at intervals of 10 degrees.

[0011] Specifically, the turntable device includes 18 laser targets, and the 18 laser targets are arranged on the circumference of the turntable body at intervals of 20 degrees.

[0012] Specifically, the turntable has a diameter of 4m to 5m and a thickness of 49cm to 51cm.

[0013] Specifically, the laser target is a square with a size of 1 cm×1 cm to 2 cm×2 cm. When the laser sensor scans the center of the laser target, the magnetometer probe is triggered to collect data.

[0014] Specifically, the group of magnetometer probes includes three three-component fluxgate magnetometers, which are arranged in a line with equal intervals. The distance R1 between the three-component fluxgate magnetometer closest to the product under test and the product under test is 1 to 1.5 times the envelope size of the product under test, and the distance R2 between the three-component fluxgate magnetometer next closest to the product under test and the product under test is 1.3R1 to 1.4R1; the spacing between R1 and R2 is equal to the spacing between the distances R3 and R2 between the three-component fluxgate magnetometer farthest from the product under test and the product under test; the three orthogonal axis directions measured by the three three-component fluxgate magnetometers are parallel to the three axial directions of the coordinates of the turntable device.

[0015] Specifically, the turntable device further includes a guide rail, which is connected to the bottom of the turntable body and is used to move the position of the turntable body.

[0016] Specifically, the guide rail length is greater than 5R3.

[0017] Specifically, the turntable device further includes a data transmission line and a data processing system. The data transmission line is used to connect the hub and the data processing system. The data processing system is used to receive, store and analyze signals transmitted from the hub.

[0018] Specifically, the turntable body is made of aluminum, and the bearing matched therewith is a copper bearing.

[0019] Compared with the existing technology, the advantages of this application are: the turntable device can automatically rotate 360° continuously. When the laser sensor detects each target, the magnetometer probe automatically collects the magnetic field strength data at the current angle. The entire process does not require stopping midway and does not require manual intervention, which reduces labor costs and improves the continuity and accuracy of data collection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0021] Figure 1 It is a turntable device for accurately measuring magnetic field strength described in the embodiments of this application. DETAILED DESCRIPTION

[0022] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0023] The following describes the embodiments of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the features in the following embodiments and embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of this application.

[0024] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on this application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement an apparatus and / or practice a method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this apparatus and / or practice this method.

[0025] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The illustrations only show components related to the present application and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0026] Additionally, in the following description, specific details are provided to provide a thorough understanding of the examples. However, one skilled in the art will appreciate that the aspects described can be practiced without these specific details.

[0027] The embodiment of the present application provides a turntable device for accurately measuring magnetic field strength, such as Figure 1 As shown, the turntable device includes: a turntable body 1, at least one set of magnetometer probes 2, N laser targets 3, a laser sensor 4, and a hub 5.

[0028] The turntable body 1 is used to carry the product 6 to be tested. The turntable body 1 rotates horizontally 360° along the vertical axis, and the product 6 to be tested rotates horizontally 360° along the vertical axis along with the turntable body 1 .

[0029] A group of magnetometer probes 2 is on the same horizontal plane as the center of the product under test 6. A group of magnetometer probes includes three three-component fluxgate magnetometers, which respectively measure the magnetic field strength in the directions of three orthogonal axes. At least one group of magnetometer probes 2 is used to test the magnetic field strength of the product under test 6 at the corresponding angle of each laser target 3.

[0030] N laser targets 3 are evenly arranged on the circumference of the turntable body 1, and the interval between each laser target is 360 / N degrees. The marked position angles of the N laser targets 3 correspond to each angle of the magnetic field strength required to be collected by the measured product 6.

[0031] The laser sensor 4 is arranged on the same horizontal plane of the N laser targets 3 . When the laser sensor 4 scans the laser target, the laser sensor 4 triggers the signal to be transmitted to the hub 5 .

[0032] The hub 5 receives the trigger signal from the laser sensor 4, and the hub 5 instructs at least one group of magnetometer probes 2 to start collecting, and at least one group of magnetometer probes 2 starts to test the magnetic field strength of the product under test 6 at the current angle where the laser target position is located, and the magnetic field strength tested by at least one group of magnetometer probes 2 is then transmitted to the hub 5.

[0033] In the above device, the turntable device can automatically and continuously rotate 360°. When the laser sensor detects each target, the magnetometer probe automatically collects the magnetic field intensity data at the current angle. The entire process does not require stopping midway and does not require manual intervention, which reduces labor costs and improves the continuity and accuracy of data collection.

[0034] In one embodiment, the turntable body 1 is made of aluminum, the turntable body 1 has high structural stability and corrosion resistance, and the bearings matched with the turntable body 1 are copper bearings. The friction between the aluminum turntable body and the copper bearings is reduced, and the smoothness of the rotation is improved.

[0035] In one embodiment, when at least one group of magnetometer probes 2 is a group of magnetometer probes, the group of magnetometer probes is arranged on the same horizontal plane as the center of the product under test, and the group of magnetometer probes includes three three-component fluxgate magnetometers, which are arranged in a line with equal intervals. The distance R1 between the three-component fluxgate magnetometer closest to the product under test and the product under test is 1 to 1.5 times the envelope size of the product under test, and the distance R2 between the three-component fluxgate magnetometer next closest to the product under test and the product under test is 1.3R1 to 1.4R1; the spacing between R1 and R2 is equal to the spacing between the distances R3 and R2 between the three-component fluxgate magnetometer farthest from the product under test and the product under test; the three orthogonal axis directions measured by the three three-component fluxgate magnetometers are parallel to the three axial directions of the test equipment coordinates. When the at least one group of magnetometer probes 2 is two groups of magnetometer probes, the configuration of each group of magnetometer probes is consistent with the configuration of the above one group of magnetometer probes, and the two groups of magnetometer probes are symmetrical about the center of the product to be tested.

[0036] In one embodiment, N laser targets 3 are arranged on the circumference of the turntable body 1 , and the N laser targets 3 are arranged at intervals of 360 / N degrees. The laser targets 3 are used for laser positioning. Wherein, N can be 36 or 18.

[0037] In one embodiment, a laser sensor 4 is arranged on the same plane as the laser target 3 to detect the laser target signal. The detected laser target signal is transmitted to the hub 5, and the hub 5 transmits the signal to the magnetometer probe 2, triggering the magnetometer probe 2 to collect data; the data collected by the magnetometer probe 2 is also transmitted to the hub 5.

[0038] In one embodiment, the turntable body 1 has a diameter of 4m to 5m and a thickness of 49cm to 51cm.

[0039] In one embodiment, the laser target 3 is a square with a size of 1 cm×1 cm to 2 cm×2 cm. When the laser sensor 4 scans the center of the laser target 3, the magnetometer probe 2 is triggered to collect data.

[0040] In one embodiment, the turntable device further includes a guide rail 7, which is connected to the bottom of the turntable body 3 and can move the position of the turntable body 3. The length of the guide rail 7 is greater than five times the distance of the three-component fluxgate magnetometer 2 farthest from the product 6 being measured.

[0041] In one embodiment, the turntable device further includes a data transmission line 8 and a data processing system 9. The data transmission line 8 connects the hub 5 and the data processing system 9. The data processing system 9 receives, stores and analyzes signals transmitted from the hub.

[0042] Example 1

[0043] like Figure 1 As shown, the turntable device includes: a turntable body 1, two sets of magnetometer probes 2, 36 laser targets 3, a laser sensor 4, and a hub 5.

[0044] The turntable body 1 is made of aluminum, offering high structural stability and corrosion resistance. It features bronze bearings to reduce friction and enhance smooth rotation. The turntable body 1 has a diameter of 4 mm and a thickness of 50 cm. It supports the product under test 6 and rotates horizontally 360° along its vertical axis. The product under test 6 rotates horizontally along the vertical axis along with the turntable body 1.

[0045] The two groups of magnetometer probes 2 are arranged on the same horizontal plane where the center of the product under test 6 is located. The two groups of magnetometer probes 2 are symmetrical about the center of the product under test 6. Each of the two groups of detectors 2 includes three three-component fluxgate magnetometers, and the three three-component fluxgate magnetometers are arranged in a line with equal spacing. The total of six three-component fluxgate magnetometers contained in the two groups of detectors 2 are on the same straight line. The distance R1 between the three-component fluxgate magnetometer 201 closest to the product under test 6 in the two groups of detectors 2 and the product under test 6 is 1 to 1.5 times the envelope size of the product under test 6, and the distance R1 between the three-component fluxgate magnetometer 201 closest to the product under test 6 is 1 to 1.5 times the envelope size of the product under test 6. The distance R2 between the three-component fluxgate magnetometer 202 and the product under test 6 is 1.3R1 to 1.4R1. The distance between the three-component fluxgate magnetometer 201 closest to the product under test 6 and the three-component fluxgate magnetometer 202 that is six times closer to the product under test is equal to the distance between the three-component fluxgate magnetometer 202 that is six times closer to the product under test and the three-component fluxgate magnetometer 203 that is farthest from the product under test 6. The distance between the three-component fluxgate magnetometer 203 farthest from the product under test 6 and the product under test is R3, i.e., the distance between R1 and R2 is equal to the distance between R2 and R3. The three orthogonal axes measured by the three three-component fluxgate magnetometers 201, 202, and 203 in each of the two detector groups 2 are parallel and consistent with the three axes of the turntable device coordinate system.

[0046] 36 laser targets 3 are arranged on the circumference of the turntable body 1. The 36 laser targets 3 are arranged at intervals of 10 degrees on the circumference of the turntable body 1. The laser targets 3 are 1 cm x 1 cm squares in size.

[0047] Laser sensor 4 is positioned in the same plane as laser target 3. It detects the signal from laser target 3. When laser sensor 4 scans the center of laser target 3, it triggers magnetometer probe 2 to collect data. The detected signal from laser target 3 is transmitted to hub 5, which in turn transmits the signal to magnetometer probe 2, triggering it to collect data. The data collected by magnetometer probe 2 is also transmitted to hub 5.

[0048] The guide rail 7 is connected to the bottom of the turntable body 1 and can move the position of the turntable body 1. The length of the guide rail 7 is greater than five times the distance R3 of the three-component fluxgate magnetometer 203 farthest from the product 6 under test.

[0049] The turntable device also includes a data transmission line 8 and a data processing system 9. The data transmission line 8 connects the hub 5 and the data processing system 9. The data processing system 9 receives, stores and analyzes the signals transmitted from the hub 5. The data processing system 9 provides real-time feedback and detailed test reports.

[0050] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A turntable device for accurately measuring magnetic field strength, characterized in that: include: The turntable body is used to carry the product to be tested and can rotate 360° horizontally along the vertical axis; At least one set of magnetometer probes, each of which is arranged on the same horizontal plane as the center of the product under test, and is used to measure the magnetic induction intensity of the product under test; N laser targets, the N laser targets are arranged on the circumference of the turntable body at intervals of 360 / N degrees, and the laser targets are used for laser positioning; a laser sensor, arranged at the same horizontal plane as the laser target, for detecting the laser target signal and triggering the magnetometer probe to collect data; A hub is connected to the magnetometer probe and the laser sensor, and is used to receive signals from the magnetometer probe and the laser sensor to achieve mutual communication between the magnetometer probe and the laser sensor.

2. The turntable device according to claim 1, characterized in that: The turntable device includes 36 laser targets, which are arranged on the circumference of the turntable body at intervals of 10 degrees.

3. The turntable device according to claim 1, wherein: The turntable device includes 18 laser targets, which are arranged on the circumference of the turntable body at intervals of 20 degrees.

4. The turntable device according to claim 1, wherein: The turntable has a diameter of 4m to 5m and a thickness of 49cm to 51cm.

5. The turntable device according to claim 1, wherein: The laser target is a square with a size of 1 cm×1 cm to 2 cm×2 cm. When the laser sensor scans the center of the laser target, the magnetometer probe is triggered to collect data.

6. The turntable device according to claim 1, wherein: The set of magnetometer probes includes three three-component fluxgate magnetometers, which are arranged in a line with equal intervals. The distance R1 between the three-component fluxgate magnetometer closest to the product under test and the product under test is 1 to 1.5 times the envelope size of the product under test, and the distance R2 between the three-component fluxgate magnetometer next closest to the product under test and the product under test is 1.3R1 to 1.4R1; the spacing between R1 and R2 is equal to the spacing between the distances R3 and R2 between the three-component fluxgate magnetometer farthest from the product under test and the product under test; the three orthogonal axis directions measured by the three three-component fluxgate magnetometers are parallel to the three axial directions of the coordinates of the turntable device.

7. The turntable device according to claim 1, characterized in that: The turntable device also includes a guide rail connected to the bottom of the turntable body and used for moving the position of the turntable body.

8. The turntable device according to claim 7, characterized in that: The guide rail length is greater than 5R3.

9. The turntable device according to claim 1, wherein: The turntable device also includes a data transmission line and a data processing system. The data transmission line is used to connect the hub and the data processing system. The data processing system is used to receive, store and analyze signals transmitted from the hub.

10. The turntable device according to claim 1, wherein: The turntable body is made of aluminum, and the bearing matched with it is a copper bearing.

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