TMR sensor with temperature compensation

Abstract

The utility model discloses a TMR sensor with temperature compensation, which relates to the technical field of sensors and comprises a sensor body, a top shell is clamped at the top end of the sensor body, a temperature compensator body is mounted at the bottom end of the inner side of the sensor body, and the temperature compensator body is in circuit connection with the sensor body. A ventilation opening is formed in the outer wall of the sensor body. By adopting the structure, when a workpiece in the sensor body runs, heat released from the interior of the sensor body can be eliminated through the ventilation opening, the filter plate can effectively filter introduced air, and the dustproof cloth can effectively filter the introduced air while ventilation and heat dissipation of the ventilation opening are not hindered. A large amount of dust and pollutants in the air can be blocked, so that the dust or pollutants can be prevented from falling on the surface of a workpiece to cause loss of the workpiece, ventilation and heat dissipation are facilitated, and meanwhile, the protection performance of the workpiece in the sensor body is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sensors, and particularly relates to a TMR sensor with temperature compensation. Background Art

[0002] The TMR sensor with temperature compensation is a magnetic switch that integrates a tunnel magnetoresistance sensor and CMOS technology. It has the characteristics of low power consumption, high sensitivity, high response frequency and wide operating temperature range. The tunnel magnetoresistance element in the TMR sensor is a special resistor device whose resistance changes with the change of the magnetic field. By measuring this change, the TMR sensor can sense the changes in the surrounding magnetic field. At the same time, the TMR sensor also integrates a temperature compensation circuit, which can automatically compensate for the changes in sensor performance caused by temperature changes, thereby improving the measurement accuracy and stability of the sensor.

[0003] A Chinese patent with publication number "CN210720553U" discloses a TMR current sensor with temperature compensation, wherein a coil is arranged on the outer wall of the magnetic core, a primary current IP is arranged on the inner wall of the magnetic core, a TMR chip is fixedly connected to the outer surface of one side of the magnetic core, a wire is fixedly connected to the outer surface of the other side of the magnetic core, a first resistor and a second resistor are fixedly connected to the outer surface of one side of the wire, and the second resistor is located on one side of the first resistor.

[0004] However, this sensor still has some shortcomings. Whenever the workpiece inside the sensor is running, it will release a certain amount of heat. Since the sensor itself cannot effectively dissipate the heat, the heat accumulates higher and higher inside the sensor. After long-term operation, the heat will also cause certain damage to the workpiece inside the sensor, thereby reducing the service life of the sensor itself. Utility Model Content

[0005] In view of the problems mentioned in the background technology, the purpose of the present utility model is to provide a TMR sensor with temperature compensation to solve the problems raised by the above background technology.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions:

[0007] A TMR sensor with temperature compensation comprises a sensor body, a top shell is clamped on the top of the sensor body, a temperature compensator body is installed on the inner bottom of the sensor body, the temperature compensator body and the sensor body are connected in circuit, a vent is provided on the outer wall of the sensor body, the vent is communicated with the inside of the sensor body, a slide groove is provided on the inner wall of the vent, a filter plate is slidably connected to the inner side of the slide groove, the filter plate covers the inner side of the vent, the bottom end of the filter plate is threadedly connected to the inner side of the vent, a Velcro hook surface is provided on one side of the filter plate, a dustproof cloth is movably connected to one side of the filter plate, and the dustproof cloth is movably connected to the filter plate through the Velcro hook surface On one side, a card block is fixedly connected to the bottom end of the top shell, a card slot matching the card block is opened at the top of the sensor body, the card block is clamped in the inside of the card slot, and the top shell is clamped to the top of the sensor body through the card slot and the card block. A connector is installed on the outer wall of the sensor body, and ventilation through the vents can effectively dissipate the heat of the workpiece inside the sensor body. The filter plate can effectively filter the dust in the air, and the dustproof cloth can block a large amount of dust and pollutants in the air, thereby preventing dust or pollutants from being adsorbed on the surface of the workpiece. While achieving convenient heat dissipation, it also effectively improves the protection of the workpiece inside the sensor body.

[0008] As a preferred technical solution, a first screw hole is provided at the top of the top shell, and the first screw hole penetrates to the inner bottom end of the slot, and the inner side of the first screw hole is threadedly connected to a first bolt, and the bottom end of the first bolt is threadedly connected to the inside of the sensor body through the first screw hole, and the top shell is threadedly connected to the top of the sensor body through the first bolt and the first bolt, and a handle is fixedly connected to the top of the top shell, and the shape of the handle is concave, and the shape of the corner of the handle is arc-shaped, and the card block that is fixed by the first bolt and the first screw hole can be threadedly fixed, thereby effectively improving the stability of the top shell fixation, and can prevent the top shell from falling off by itself, and the handle can provide the user with a gripping point, and when disassembling the top shell, the first bolt is unscrewed out of the first screw hole, and then the card block can be pulled out of the slot through the handle, thereby facilitating the disassembly and assembly of the top shell at a later time.

[0009] As a preferred technical solution, a rectangular opening is provided at the top of the top shell, the rectangular opening passes through the top shell, the rectangular opening is communicated with the interior of the sensor body, a protective glass is fixedly connected to the inner side of the rectangular opening, the protective glass covers the inner side of the rectangular opening, the position of the protective glass is symmetrical to the position of the temperature compensator body, through the opening of the rectangular opening, the user can directly view the workpiece inside the sensor body through the protective glass without opening the top shell, thereby facilitating the user to observe the workpiece inside the sensor body at all times.

[0010] As a preferred technical solution, a second screw hole is provided at the bottom end of the sensor body, and the second screw hole penetrates to the bottom end of the filter plate. The internal thread of the second screw hole is connected to the second bolt, and the top end of the second bolt is threadedly connected to the inside of the filter plate through the second screw hole, and the bottom end of the filter plate is threadedly connected to the inner side of the vent through the second screw hole and the second bolt. Through the cooperation of the second bolt and the second screw hole, the position of the filter plate can be effectively threadedly fixed, which can effectively improve the stability of the position of the filter plate and also prevent the filter plate from being displaced through the slide groove.

[0011] As a preferred technical solution, a sealing ring is fixedly connected to the top of the sensor body, and the sealing ring is fixedly connected to the corner position of the top of the sensor body. A limiting groove matching the sensor body is opened at the bottom of the top shell, and the sealing ring is clamped in the inside of the limiting groove. The sealing ring covers the inside of the limiting groove. Through the sealing of the sealing ring, the connection point between the sensor body and the top shell can be effectively sealed. While improving the sealing between the two, it also effectively improves the protection of the workpiece inside the sensor body.

[0012] As a preferred technical solution, the bottom end of the sensor body is fixedly connected to a support frame, and the support frame is fixedly connected to the corner position of the bottom end of the sensor body. A support rod is fixedly connected to the inner wall of the support frame, and the support rod covers the inner side of the support frame. Due to the existence of the support frame, the bottom end of the sensor body can be effectively supported, and the support rod can make the support frame more firmly fixed, thereby effectively improving the stability of the bottom end of the sensor body.

[0013] As a preferred technical solution, the bottom end of the top shell is fixedly connected with a spring seat, which is fixedly connected to the center position of the bottom end of the top shell. The bottom end of the spring seat is fixedly connected with a limit plate. The position of the limit plate is symmetrical with the position of the temperature compensator body. Due to the existence of the limit plate, the limit plate can be pushed downward under the pressure of the spring. The limit plate can protect the workpiece at the bottom end of the inner side of the sensor body, and can also perform secondary limiting on the top end of the workpiece, which can effectively improve the stability of the workpiece fixation.

[0014] As a preferred technical solution, the bottom end of the limit plate is fixedly connected with a rubber pad, which covers the bottom end of the limit plate. The position of the bottom end of the limit plate is aligned with the position of the top end of the temperature compensator. Due to the presence of the rubber pad, the rubber pad has a good anti-slip and shock-absorbing effect, and can also prevent the limit plate from damaging the top end of the workpiece.

[0015] As a preferred technical solution, a wear-resistant layer is coated on the outer wall of the sensor body. The wear-resistant layer on the outer wall of the sensor body covers the sensor body, and the wear-resistant layer can effectively improve the wear resistance of the outer wall of the sensor body, thereby increasing the service life of the sensor body itself.

[0016] In summary, the utility model mainly has the following beneficial effects:

[0017] First, when the workpiece inside the sensor body is running, the heat released inside the sensor body can be discharged through the vents, and the filter plate can effectively filter the incoming wind, and the dustproof cloth can block a large amount of dust and pollutants in the air without hindering the ventilation and heat dissipation of the vents, thereby preventing these dust or pollutants from falling on the surface of the workpiece and causing damage to the workpiece. Because the filter plate is slidably connected to the inner wall of the vent, it is easier for the user to remove the filter plate when it needs to be cleaned later. At the same time, the dustproof cloth can also be directly removed through the Velcro hook surface, which not only facilitates ventilation and heat dissipation, but also effectively improves the protection of the workpiece inside the sensor body;

[0018] Second, due to the existence of the limit plate, its spring seat can always push the limit plate downward, so that the bottom end of the rubber pad and the top end of the workpiece can always keep in contact with each other. The rubber pad has a good anti-slip and shock-absorbing effect. While preventing the workpiece from being damaged by the limit plate, it also performs a secondary limit on the top end of the workpiece, thereby effectively improving the stability of the workpiece itself. At the same time, due to the opening of the rectangular opening, the user can also directly view the workpiece inside the sensor body through the protective glass without opening the top shell, which is convenient for the user to observe the operation status of the workpiece at all times. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 This is a schematic diagram of the inner structure of the sensor of the utility model;

[0021] Figure 3 It is a schematic diagram of the inner structure of the vent of the utility model;

[0022] Figure 4 It is a schematic diagram of the filter plate structure of the utility model;

[0023] Figure 5 It is a schematic diagram of the bottom structure of the utility model;

[0024] Figure 6 This utility model Figure 5 A schematic diagram of the enlarged structure of part A;

[0025] Figure 7 It is a schematic diagram of the top shell structure of the utility model;

[0026] Figure 8 It is a schematic diagram of the plane structure of the utility model.

[0027] Figure numerals: 1. sensor body, 2. top shell, 3. rectangular opening, 4. protective glass, 5. handle, 6. slot, 7. block, 8. first screw hole, 9. first bolt, 10. connecting piece, 11. temperature compensator body, 12. sealing ring, 13. limit groove, 14. spring seat, 15. limit plate, 16. rubber pad, 17. support frame, 18. support rod, 19. vent, 20. slide groove, 21. filter plate, 22. Velcro hook surface, 23. dustproof cloth, 24. second screw hole, 25. second bolt. DETAILED DESCRIPTION

[0028] Example

[0029] refer to Figures 1 to 8The TMR sensor with temperature compensation described in this embodiment includes a sensor body 1, a top shell 2 is clamped on the top of the sensor body 1, a temperature compensator body 11 is installed on the inner bottom of the sensor body 1, the temperature compensator body 11 and the sensor body 1 are connected in circuit, a vent 19 is opened on the outer wall of the sensor body 1, the vent 19 is communicated with the inside of the sensor body 1, a slide groove 20 is opened on the inner wall of the vent 19, a filter plate 21 is slidably connected to the inner side of the slide groove 20, the filter plate 21 covers the inner side of the vent 19, and the bottom end of the filter plate 21 is threaded The filter plate 21 is connected to the inner side of the vent 19, a Velcro hook surface 22 is provided on one side of the filter plate 21, a dustproof cloth 23 is movably connected to one side of the filter plate 21, and the dustproof cloth 23 is movably connected to one side of the filter plate 21 through the Velcro hook surface 22. The bottom end of the top shell 2 is fixedly connected with a card block 7, and the top of the sensor body 1 is provided with a card slot 6 matching the card block 7, and the card block 7 is connected to the inside of the card slot 6. The top shell 2 is connected to the top of the sensor body 1 through the card slot 6 and the card block 7. A connector 10 is installed on the outer wall of the sensor body 1. The TMR sensor with temperature compensation has applications in many fields. Widely used, such as flow meter, solid-state switch, speed detection, position detection, motor and fan control, etc. These sensors can achieve high-precision and high-stability magnetic field measurement in various environments, providing reliable protection for various industrial applications. When the sensor body 1 is running, the workpiece inside the sensor body 1 will release a certain amount of heat, which can be discharged from the sensor body 1 through the vent 19. Due to the existence of the filter plate 21, the filter plate 21 can effectively filter the circulating air, and at the same time, the inner side of the vent 19 can be sealed, which can play a certain protective role. The dustproof cloth 23 can block a large amount of dust and pollutants in the air without hindering the ventilation and heat dissipation of the vent 19, thereby preventing these dust or pollutants from falling on the surface of the workpiece and causing damage to the workpiece. Because the filter plate 21 is slidably connected to the inner wall of the vent 19, when the filter plate 21 needs to be cleaned later, it is also easier for the user to remove the filter plate 21. At the same time, the dustproof cloth 23 can also be directly removed through the Velcro hook surface 22, which not only facilitates ventilation and heat dissipation, but also effectively improves the protection of the workpiece inside the sensor body 1.

[0030] refer to Figure 1 and Figure 2 and Figure 7A first screw hole 8 is provided at the top of the top shell 2, and the first screw hole 8 penetrates to the inner bottom end of the slot 6. The inner side of the first screw hole 8 is threadedly connected with a first bolt 9. The bottom end of the first bolt 9 is threadedly connected to the inside of the sensor body 1 through the first screw hole 8. The top shell 2 is threadedly connected to the top of the sensor body 1 through the first bolt 9 and the first bolt 9. The top of the top shell 2 is fixedly connected with a handle 5. The shape of the handle 5 is concave, and the shape of the corner of the handle 5 is arc-shaped. Because the top shell 2 is fixed to the top of the sensor body 1 by snapping, the first bolt 9 is screwed into the inside of the first screw hole 8. After that, the position of the block 7 can be fixed by threading, thereby effectively improving the stability of the position fixation of the top shell 2, and also preventing the block 7 from loosening or detaching. When the top shell 2 needs to be disassembled, the user screws the first bolt 9 out of the first screw hole 8, and then pulls the block 7 out of the slot 6 through the gripping point provided by the handle 5. This can achieve the purpose of facilitating the disassembly and assembly of the top shell 2, and is also convenient for the later inspection and maintenance of the workpiece inside the sensor body 1. The shape of the handle corners is arc-shaped, which can also prevent the handle from hurting the user's palm.

[0031] refer to Figure 1 and Figure 2 A rectangular opening 3 is provided at the top of the top shell 2, and the rectangular opening 3 passes through the top shell 2. The rectangular opening 3 is communicated with the interior of the sensor body 1. A protective glass 4 is fixedly connected to the inner side of the rectangular opening 3, and the protective glass 4 covers the inner side of the rectangular opening 3. The position of the protective glass 4 is symmetrical to the position of the temperature compensator body 11. Due to the opening of the rectangular opening 3, the user can directly view the workpiece inside the sensor body 1 through the protective glass 4 without opening the top shell 2, thereby facilitating the user to observe the workpiece inside the sensor body 1 at all times, and also effectively improving the safety of the workpiece inside the sensor body 1.

[0032] refer to Figures 3 to 6 A second screw hole 24 is provided at the bottom end of the sensor body 1, and the second screw hole 24 penetrates to the bottom end of the filter plate 21. The second screw hole 24 is internally threadedly connected with a second bolt 25. The top end of the second bolt 25 is threadedly connected to the inside of the filter plate 21 through the second screw hole 24. The bottom end of the filter plate 21 is threadedly connected to the inner side of the vent 19 through the second screw hole 24 and the second bolt 25. Due to the existence of the second bolt 25 and the second screw hole 24, the position of the filter plate 21 can be effectively threadedly fixed, which can effectively improve the stability of the position of the filter plate 21, and also prevent the filter plate 21 from sliding down through the slide groove 20 by itself. When the filter plate 21 needs to be disassembled, the second bolt 25 can be screwed out of the second screw hole 24.

[0033] refer to Figure 2 and Figure 7 and Figure 8A sealing ring 12 is fixedly connected to the top of the sensor body 1. The sealing ring 12 is fixedly connected to the corner position of the top of the sensor body 1. A limiting groove 13 matching the sensor body 1 is opened at the bottom of the top shell 2. The sealing ring 12 is clamped in the inside of the limiting groove 13. The sealing ring 12 covers the inside of the limiting groove 13. Due to the existence of the sealing ring 12, when the position of the top shell 2 is fixed, its sealing will also completely seal the connection point between the sensor and the top shell 2, thereby effectively improving the sealing performance of the connection point between the two, and also effectively improving the protection of the workpiece inside the sensor body 1.

[0034] refer to Figure 4 and Figure 5 The bottom end of the sensor body 1 is fixedly connected to a support frame 17, and the support frame 17 is fixedly connected to the corner position of the bottom end of the sensor body 1. A support rod 18 is fixedly connected to the inner wall of the support frame 17, and the support rod 18 covers the inner side of the support frame 17. Due to the existence of the support frame 17, the support frame 17 can support the bottom end of the sensor body 1, which can prevent the bottom end of the sensor body 1 from sticking to the installation point box, thereby effectively protecting the bottom end of the sensor body 1, and the support rod 18 can make the position of the support frame 17 more stable, which can effectively improve the protection of the support frame 17.

[0035] refer to Figure 7 The bottom end of the top shell 2 is fixedly connected with a spring seat 14, and the spring seat 14 is fixedly connected to the center position of the bottom end of the top shell 2. The bottom end of the spring seat 14 is fixedly connected with a limiting plate 15. The position of the limiting plate 15 is symmetrical with the position of the temperature compensator body 11. The bottom end of the limiting plate 15 is fixedly connected with a rubber pad 16, and the rubber pad 16 covers the bottom end of the limiting plate 15. The position of the bottom end of the limiting plate 15 is close to the position of the top end of the temperature compensator. Due to the existence of the limiting plate 15, its spring seat 14 can always push the limiting plate 15 downward, so that the bottom end of the rubber pad 16 and the top end of the workpiece can always remain in contact with each other. The rubber pad 16 has a good anti-slip and shock-absorbing effect. While preventing the workpiece from being damaged by the limiting plate 15, the top end of the workpiece is also limited for the second time, thereby effectively improving the stability of the workpiece itself.

[0036] refer to Figure 1 The outer wall of the sensor body 1 is coated with a wear-resistant layer, and the wear-resistant layer on the outer wall of the sensor body 1 covers the sensor body 1. Due to the existence of the wear-resistant layer, the wear-resistant layer is a wear-resistant coating, which can effectively improve the wear resistance of the outer wall of the sensor body 1, thereby effectively improving the service life of the sensor body 1 itself.

[0037] Principle and advantages of use: When in use, the heat released by the workpiece inside the sensor body 1 can be discharged from the sensor body 1 through the vent 19, and its filter plate 21 can effectively filter the circulating air, and at the same time, the inner side of the vent 19 can be sealed, which can play a certain protective role, and the dustproof cloth 23 can block a large amount of dust and pollutants in the air without hindering the ventilation and heat dissipation of the vent 19, thereby preventing these dust or pollutants from falling on the surface of the workpiece and causing damage to the workpiece. Because the filter plate 21 is slidably connected to the inner wall of the vent 19, when the filter plate 21 needs to be cleaned later, it is also easier for the user to remove the filter plate 21, and the dustproof cloth 23 can also be directly removed through the Velcro hook surface 22 , because the top shell 2 is fixed to the top of the sensor body 1 by snapping, after the first bolt 9 is screwed into the first screw hole 8, the position of the block 7 can be threadedly fixed, thereby effectively improving the stability of the position fixation of the top shell 2, and also preventing the block 7 from loosening or detaching. When the top shell 2 needs to be disassembled, the user screws the first bolt 9 out of the first screw hole 8, and then pulls the block 7 out of the card slot 6 through the grasping point provided by the handle 5, thereby achieving the purpose of convenient disassembly and assembly of the top shell 2, and also facilitating the inspection and maintenance of the workpiece inside the sensor body 1 at a later time. The shape of the corners of the handle is arc-shaped, thereby preventing the handle from hurting the palm of the user. Due to the opening of the rectangular opening 3, the user can directly remove the top shell 2 without opening the top shell 2. The workpiece inside the sensor body 1 can be viewed through the protective glass 4, so it is convenient for the user to observe the workpiece inside the sensor body 1 at all times, and at the same time, the safety of the workpiece inside the sensor body 1 is effectively improved. Due to the presence of the second bolt 25 and the second screw hole 24, the position of the filter plate 21 can be effectively threaded and fixed, which can effectively improve the stability of the position of the filter plate 21 and prevent the filter plate 21 from sliding down through the slide groove 20 by itself. When the filter plate 21 needs to be removed, the second bolt 25 can be screwed out of the second screw hole 24. Due to the presence of the sealing ring 12, when the position of the top shell 2 is fixed, its sealing will also completely seal the connection point between the sensor and the top shell 2, thereby effectively improving the two. The sealing performance of the connection point position also effectively improves the protection of the workpiece inside the sensor body 1. Due to the existence of the support frame 17, the support frame 17 can support the bottom end of the sensor body 1, which can prevent the bottom end of the sensor body 1 from sticking to the installation point box, thereby effectively protecting the bottom end of the sensor body 1. The support rod 18 can make the position of the support frame 17 more stable, which can effectively improve the protection of the support frame 17. Due to the existence of the limit plate 15, the spring seat 14 can always push the limit plate 15 downward, so that the bottom end of the rubber pad 16 and the top end of the workpiece can always remain in contact with each other. The rubber pad 16 has a good anti-slip and shock-absorbing effect. While preventing the workpiece from being damaged by the limit plate 15, the top end of the workpiece is also limited for the second time.Thereby, the stability of the workpiece itself can be effectively improved.

Claims

1. A TMR sensor with temperature compensation, comprising a sensor body, characterized in that: The top end of the sensor body is clamped with a top shell, and the inner bottom end of the sensor body is installed with a temperature compensator body, the temperature compensator body and the sensor body circuit are connected, a vent is provided on the outer wall of the sensor body, the vent is communicated with the interior of the sensor body, a slide groove is provided on the inner wall of the vent, a filter plate is slidably connected to the inner side of the slide groove, the filter plate covers the inner side of the vent, the bottom end of the filter plate is threadedly connected to the inner side of the vent, a Velcro hook surface is provided on one side of the filter plate, a dustproof cloth is movably connected to one side of the filter plate, and the dustproof cloth is movably connected to one side of the filter plate through the Velcro hook surface, a block is fixedly connected to the bottom end of the top shell, a slot matching the slot is provided on the top of the sensor body, the slot is clamped in the interior of the slot, the top shell is clamped to the top of the sensor body through the slot and the block, and a connecting piece is installed on the outer wall of the sensor body.

2. A TMR sensor with temperature compensation according to claim 1, characterized in that: A first screw hole is provided at the top of the top shell, and the first screw hole penetrates to the inner bottom end of the slot, and the inner side of the first screw hole is threadedly connected with a first bolt, and the bottom end of the first bolt is threadedly connected to the inside of the sensor body through the first screw hole, and the top shell is threadedly connected to the top of the sensor body through the first bolt and the first bolt, and a handle is fixedly connected to the top of the top shell, and the shape of the handle is concave, and the shape of the corner of the handle is arc-shaped.

3. A TMR sensor with temperature compensation according to claim 1, characterized in that: A rectangular opening is provided at the top of the top shell, the rectangular opening passes through the top shell, the rectangular opening is communicated with the interior of the sensor body, a protective glass is fixedly connected to the inner side of the rectangular opening, the protective glass covers the inner side of the rectangular opening, and the position of the protective glass is symmetrical to the position of the temperature compensator body.

4. A TMR sensor with temperature compensation according to claim 1, characterized in that: A second screw hole is provided at the bottom end of the sensor body, and the second screw hole penetrates to the bottom end of the filter plate. The internal thread of the second screw hole is connected with a second bolt, and the top end of the second bolt is threadedly connected to the inside of the filter plate through the second screw hole. The bottom end of the filter plate is threadedly connected to the inner side of the vent through the second screw hole and the second bolt.

5. A TMR sensor with temperature compensation according to claim 1, characterized in that: A sealing ring is fixedly connected to the top of the sensor body, and the sealing ring is fixedly connected to the corner position of the top of the sensor body. A limiting groove matching the sensor body is opened at the bottom end of the top shell, and the sealing ring is clamped in the inside of the limiting groove, and the sealing ring covers the inside of the limiting groove.

6. A TMR sensor with temperature compensation according to claim 1, characterized in that: The bottom end of the sensor body is fixedly connected with a support frame, the support frame is fixedly connected to the corner position of the bottom end of the sensor body, and the inner wall of the support frame is fixedly connected with a support rod, the support rod covers the inner side of the support frame.

7. A TMR sensor with temperature compensation according to claim 1, characterized in that: The bottom end of the top shell is fixedly connected with a spring seat, the spring seat is fixedly connected to the center position of the bottom end of the top shell, the bottom end of the spring seat is fixedly connected with a limit plate, and the position of the limit plate is symmetrical with the position of the temperature compensator body.

8. A TMR sensor with temperature compensation according to claim 7, characterized in that: The bottom end of the limit plate is fixedly connected with a rubber pad, and the rubber pad covers the bottom end of the limit plate. The position of the bottom end of the limit plate is closely connected with the position of the top end of the temperature compensator.

9. A TMR sensor with temperature compensation according to claim 1, characterized in that: The outer wall of the sensor body is coated with a wear-resistant layer, and the wear-resistant layer on the outer wall of the sensor body covers the sensor body.

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