Switch and linear Hall test platform

Abstract

The utility model provides a switch and a linear Hall test platform. The switch and linear Hall test platform comprises a base, a rotary table, a PCB (Printed Circuit Board) bearing a Hall device and a magnet, the base comprises a first side part and a second side part; the rotary table is rotatably connected with the first side part of the base; the PCB is arranged on one side of the rotary table; the magnet is fixedly connected to the second side portion of the base. In the testing process, the rotary table is manually rotated to drive the PCB to rotate, so that the Hall device on the PCB is arranged at the central position of the magnetic field of the magnet, and after the testing is completed, the rotary table is manually rotated to enable the Hall device to leave the central position of the magnetic field of the magnet so as to replace the next Hall device. Compared with the prior art that the Hall device is manually taken to be placed in the center position of the magnetic field generated by the magnet, the problem that the position of the Hall device placed in the magnetic field cannot be completely kept consistent every time is solved, and the test accuracy and reliability can be improved.

Description

Technical Field

[0001] The utility model relates to the field of semiconductor Hall device testing, in particular to a switch and a linear Hall device testing platform. Background Art

[0002] The existing manual testing method of semiconductor Hall devices cannot guarantee the accuracy of the test. Figure 1 As shown, this test method involves manual operation, using the following main components: a PCB 3, a ceramic test socket 6, a Hall effect device 5, and a magnet 4. During the test, the operator manually places the Hall effect device at the center of the magnetic field generated by the magnet 4. However, the inevitable slight jitter during manual operation, as well as the difficulty of achieving exact consistency in the placement of the Hall effect device each time, can lead to errors in the test results, thus affecting the accuracy of the Hall effect device test. Utility Model Content

[0003] In response to the shortcomings of the existing technology, the present invention provides a switch and linear Hall test platform that is designed to facilitate the placement of the Hall device at the center of the magnetic field generated by a magnet and ensure that the position of the Hall device in the magnetic field remains consistent during the test process.

[0004] To achieve the above purpose, the present invention provides the following technical solutions:

[0005] Switch and linear Hall test platform, including:

[0006] a base comprising a first side portion and a second side portion;

[0007] a turntable rotatably connected to the first side portion of the base;

[0008] A PCB board carrying a Hall device is provided on one side of the turntable;

[0009] a magnet fixedly connected to the second side portion of the base;

[0010] The turntable rotates to drive the PCB to rotate, so that the Hall device is placed at the center of the magnetic field of the magnet.

[0011] As a further solution of the present invention, the turntable includes a swivel and a rotating arm; the swivel is rotatably connected to the first side portion of the base; one side of the rotating arm is connected to the swivel, and the other side is connected to the PCB board.

[0012] As a further solution of the present invention, the first side portion includes a first limiting portion, and the swivel includes a second limiting portion. The first limiting portion and the second limiting portion are mutually engaged to form a limiting structure, so that the swivel rotates 90° in the horizontal plane.

[0013] As a further solution of the present invention, the turntable is connected and fixed to the first side by bolts and nuts, and the total length of the rotating arm after connection with the PCB board matches the distance from the rotating body to the center position of the magnetic field of the magnet.

[0014] As a further solution of the present invention, a spring washer is further included, and the spring washer is arranged between the rotating body and the first side portion.

[0015] As a further solution of the present invention, a slot is provided on the second side portion, and the magnet is bonded in the slot by silicone rubber.

[0016] As a further solution of the present invention, the material of the magnet is Permalloy.

[0017] As a further solution of the present invention, the base and the turntable are made of FR4 epoxy glass fiber board.

[0018] The utility model has the following beneficial effects:

[0019] The switch and linear Hall test platform provided by the present invention includes a base, a turntable, a PCB board carrying a Hall device, and a magnet. The base includes a first side portion and a second side portion; the turntable is rotatably connected to the first side portion of the base; the PCB board is arranged on one side of the turntable; and the magnet is fixed to the second side portion of the base. During the test, the turntable is manually rotated to drive the PCB board to rotate, so that the Hall device on the PCB board is placed at the center position of the magnetic field of the magnet. After the test is completed, the turntable is manually rotated to move the Hall device away from the center position of the magnetic field of the magnet to replace the next Hall device. In this way, compared with the existing technology of manually taking the Hall device and placing it at the center position of the magnetic field generated by the magnet, the present application avoids the problem that the position of the Hall device in the magnetic field cannot be completely consistent each time, which is conducive to improving the accuracy and reliability of the test.

[0020] In order to more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of the prior art mentioned in this utility model;

[0022] Figure 2 This is a schematic diagram of the main structure of the switch and linear Hall test platform mentioned in the present invention;

[0023] Figure 3 This is a side view structural diagram of the switch and linear Hall test platform mentioned in the present invention;

[0024] Figure 4 This is a schematic diagram of the top view of the switch and linear Hall test platform mentioned in the present invention.

[0025] Figure 5 This is a structural diagram of the base mentioned in the present utility model. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the accompanying drawings and relevant knowledge, and described clearly and completely. Obviously, the applications described are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] Reference Figure 2-Figure 5 As shown, the switch and linear Hall test platform of the present invention includes a base 1, and the base 1 includes a first side portion 7 and a second side portion 8;

[0028] a turntable 2 rotatably connected to the first side portion 7 of the base 1 ;

[0029] The PCB board 3 carrying the Hall device is arranged on one side of the turntable 2;

[0030] The magnet 4 is fixed to the second side portion 8 of the base 1;

[0031] The turntable 2 rotates to drive the PCB 3 to rotate, so that the Hall device 5 is placed at the center of the magnetic field of the magnet 4;

[0032] The utility model sets a turntable 2 and a base 1 to cooperate with each other, and the turntable 2 can be manually rotated to drive the PCB board 3 to rotate, so that the Hall device on the PCB board 3 is placed at the center of the magnetic field of the magnet 4. After the test is completed, the turntable 2 is manually rotated to make the Hall device leave the center of the magnetic field of the magnet 4 to replace the next Hall device. In this way, compared with the existing technology of manually taking the Hall device and placing it at the center of the magnetic field generated by the magnet 4, the present application avoids the problem that the position of the Hall device in the magnetic field cannot be completely consistent each time, which is conducive to improving the accuracy and reliability of the test.

[0033] In some embodiments, the material of the magnet 4 is Permalloy.

[0034] As a further improvement, the turntable 2 includes a swivel 21 and a rotating arm 12; the swivel 21 is rotatably connected to the first side portion 7 of the base 1; one side of the rotating arm 12 is connected to the swivel 21, and the other side is connected to the PCB board 3. In this embodiment, the turntable 2 consists of two main parts: the swivel 21 and the rotating arm 12. The swivel 21 is designed to be connected to the first side portion 7 of the base 1 through a rotating mechanism to enable it to rotate. The rotating arm 12 further expands the function of the turntable 2. One end of the swivel is fixedly connected to the swivel 21, and the other end is connected to the PCB board 3. This allows the turntable 2 to flexibly drive the PCB board 3 to rotate while maintaining overall stability and ease of operation.

[0035] Further preferably, the first side portion 7 includes a first limiting portion 9, and the swivel 21 includes a second limiting portion 22. The first limiting portion 9 and the second limiting portion 22 are mutually locked to form a limiting structure, so that the swivel 21 rotates 90 degrees in the horizontal plane. Figure 2 As shown, the first stopper 9 and the second stopper 22 cooperate with each other through a clever locking mechanism to form a stable stopper structure. This design allows the swivel 21 to perform a precise 90° rotation on the horizontal plane, while ensuring positioning accuracy and operational stability throughout the entire rotation process. This stopper structure not only improves the functionality of the turntable 2, but also enhances its reliability during use.

[0036] As a further improvement, the turntable 2 is connected and fixed to the first side portion 7 by bolts 10 and nuts, and a spring washer (not shown in the figure) is added to the bolt before the nut is fixed, wherein the spring washer is arranged between the swivel 21 and the first side portion 7, so that the swivel 21 and the first side portion 7 cooperate with each other, which is convenient for fixing and rotating the swivel 21. Specifically, threaded holes are opened in the swivel 21 and the upper end of the first side portion 7, and the bolts 10 are passed through the threaded holes, and then fixed by the nuts and spring washers. In actual application, the position can be adjusted first and then fixed; in some embodiments, spring washers can be omitted and fixed directly by bolts 10.

[0037] As a further improvement, the total length of the rotating arm 12 after being connected to the PCB board 3 matches the distance from the swivel 21 to the center of the magnetic field of the magnet 4. This ensures that the Hall device can be accurately placed in the center of the magnetic field during the test, and also helps to improve the consistency and accuracy of the test.

[0038] In some embodiments, the PCB board 3 is fixed to the rotating arm 12 by two bolts, which facilitates the fixation of the PCB board.

[0039] In some embodiments, a slot 11 is provided on the second side portion 8, and the magnet 4 is bonded to the slot 11 via silicone rubber. The slot 11 is used to install and secure the magnet 4, and further securely bonding the silicone rubber to the slot 11 facilitates securing the magnet 4.

[0040] As a further improvement, the base 1 and the turntable 2 are made of FR4 epoxy glass fiber board, which has high mechanical properties, insulation properties and dielectric properties and can withstand an operating temperature between -65°C and 200°C.

[0041] The above description of the technical principles of the present invention in conjunction with specific embodiments is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions based on the principles of the present invention fall within the scope of protection of the present invention. Those skilled in the art will be able to conceive of other specific embodiments of the present invention without any creative effort, and such methods will fall within the scope of protection of the present invention.

Claims

1. Switch and linear Hall test platform, characterized by: include: a base comprising a first side portion and a second side portion; a turntable rotatably connected to the first side portion of the base; A PCB board carrying a Hall device is provided on one side of the turntable; a magnet fixedly connected to the second side portion of the base; The turntable rotates to drive the PCB to rotate, so that the Hall device is placed at the center of the magnetic field of the magnet.

2. The switch and linear Hall test platform according to claim 1, characterized in that: The turntable includes a swivel and a swivel arm; the swivel is rotatably connected to the first side portion of the base; one side of the swivel arm is connected to the swivel, and the other side is connected to the PCB board.

3. The switch and linear Hall test platform according to claim 2, characterized in that: The first side portion includes a first limiting portion, and the swivel includes a second limiting portion. The first limiting portion and the second limiting portion are mutually engaged to form a limiting structure, so that the swivel rotates 90 degrees in a horizontal plane.

4. The switch and linear Hall test platform according to claim 2, characterized in that: The total length of the rotating arm after being connected to the PCB board matches the distance from the rotating body to the center position of the magnetic field of the magnet.

5. The switch and linear Hall test platform according to claim 3, characterized in that: It also includes a spring washer, which is arranged between the rotating body and the first side portion.

6. The switch and linear Hall test platform according to claim 1, characterized in that: A slot is provided on the second side portion, and the magnet is bonded in the slot through silicone rubber.

7. The switch and linear Hall test platform according to claim 1, characterized in that: The material of the magnet is Permalloy.

8. The switch and linear Hall test platform according to claim 1, characterized in that: The base and the turntable are made of FR4 epoxy glass fiber board.

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