Anti-electromagnetic interference high-precision Hall sensor

Abstract

The invention relates to the technical field of sensors, in particular to an anti-electromagnetic interference high-precision Hall sensor which comprises a mounting plate, a shell, a frame, a pair of cover plates, a dehumidification assembly, a cooling assembly and a switching assembly, one end of the mounting plate is detachably connected with a sensor body, and the frame is vertically slidably mounted on the shell. In order to prevent excessive water vapor in air from entering and dry ambient air, the shell is sealed through the cover plate and the partition plate, meanwhile, the air pipe is opened, high-speed airflow flows in through the air pipe and flows out of the bottom of the shell, damage of the water vapor in the air to the sensor body can be avoided, and the sensor is convenient to use. And heat generated by the sensor body can be conducted to the air pipe, and the high-speed air flow can dry and evaporate water vapor in the air flow while taking away the heat and reducing the temperature, so that the effects of prolonging the service life of the sensor body and improving the detection precision are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of sensors, and particularly to a high-precision Hall sensor with electromagnetic interference resistance. Background Art

[0002] A high-precision Hall sensor is a sensor based on the Hall effect that can accurately measure the magnetic field strength, direction, and their changes, and convert them into electrical signals for output. High-precision Hall sensors are widely used in many fields. For example, in the power generation and motor fields, they are used for the monitoring, control, and fault diagnosis of energy-saving generators and generator sets to achieve efficient power generation and fault warning; in energy-saving motors and starting motors, they are used for speed control and position detection to improve the energy efficiency and operating performance of the motors. In addition, in the field of household energy-saving electrical appliances, they are used for current measurement and protection as well as magnetic balance monitoring to reduce losses and the risk of faults, and achieve energy conservation and extended equipment life.

[0003] Most of the existing high-precision Hall sensors need to have certain electromagnetic interference resistance and heat dissipation performance during installation to resist the influence of external electromagnetic fields on them and the influence of the heat generated during their own operation, and to extend their working life. For example, comparing a high-precision Hall sensor with electromagnetic interference resistance disclosed in Chinese Patent Publication No. CN113452206A, which includes a limit housing, the bottom of the limit housing is fixedly connected with a heat dissipation housing, the inner wall of the limit housing is fixedly connected with a PCB board, the top of the PCB board is provided with a Hall sensor, and fixing devices are arranged on the outer walls on the left and right sides of the Hall sensor. Although this solution can achieve the function of adaptively adjusting the heat dissipation rate according to the temperature of the Hall sensor body, it is not convenient to prevent water vapor from entering the housing and to dry the moisture in the air.

[0004] When the environment is relatively humid and the water content in the air is high, water vapor is likely to condense into a water film on the surface of the magnetic material of the sensor, changing magnetic performance parameters such as the magnetic permeability of the magnetic material. This will cause deviations in the response of the Hall sensor to the magnetic field, affecting the measurement accuracy. And the presence of water vapor will affect the heat conduction and heat dissipation performance of the sensor, resulting in uneven temperature distribution inside the sensor. It will even increase thermal noise, reduce the signal-to-noise ratio of the sensor, and affect its accuracy in weak signal detection. Therefore, improvement is needed. Summary of the Invention

[0005] The purpose of the present invention is to provide a high-precision Hall sensor with electromagnetic interference resistance, which can prevent excessive water vapor in the air from entering while having a cooling effect, and dry the ambient air.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] The cam is connected to the housing by a pair of cams, and the cam is connected to the housing by a pair of cams. The cam is connected to the housing by a pair of cams. The cam is connected to the housing by a pair of cams.

[0008] Preferably, the dehumidification assembly also includes a pair of rotating shafts and a pair of switching mechanisms, the rotating shafts are fixedly connected to one side of the cover plate, the rotating shafts pass through the side wall of the frame and are rotatably connected thereto, the switching mechanism includes a top plate and a pair of torsion springs, one side of the top plate is rotatably connected to the top of the air duct, the bottom of the top plate and the top of the air duct are in contact with each other, the torsion springs are sleeved on the outer periphery of the top plate, one end of the torsion spring is fixedly connected to the top plate, and the other end of the torsion spring is fixedly connected to the air duct, a pressure block is fixedly connected to one side of the cover plate, and the bottom of the pressure block and the top of one side of the top plate are in conflict with each other.

[0009] Preferably, the switching assembly includes a pair of sleeves and a pair of driving mechanisms, the sleeves are fixedly connected to the periphery of the shell, and the bottoms at both ends of the frame are slidingly connected to the inner walls of the two sleeves respectively. The driving mechanism includes a hydraulic rod, a push rod, a U-shaped plate, a pair of spur gears and a pair of racks. The bottom of the hydraulic rod is fixedly connected to the bottom wall of the sleeve, the top of the telescopic end of the hydraulic rod is fixedly connected to the bottom of the push rod, and the top of the push rod is fixedly connected to the U-shaped plate. The two racks are symmetrically distributed at both ends of the U-shaped plate and fixedly connected to its inner wall. The two spur gears are coaxially connected to the two rotating shafts respectively, and the spur gears and the racks are meshed with each other.

[0010] Preferably, the dehumidification assembly further comprises a pair of brackets, the bottom of the brackets being fixedly connected to the top of the partition, the top of the brackets passing through the bottom wall of the frame body and being slidably connected thereto, and the bottom of one end of the brackets being in conflict with the top of the U-shaped plate.

[0011] Preferably, the switching assembly further comprises a slider, which is fixedly connected to the periphery of the push rod, is slidably connected to the inner wall of the sleeve, and the top of the slider is in contact with the bottom of the frame.

[0012] Preferably, the temperature reduction assembly further includes a mounting bracket, a transmission rod, a motor, and a speed regulation mechanism. The top of the transmission rod is coaxially connected to the bottom of the fan blade, and the bottom of the transmission rod is rotatably connected to the top of the mounting bracket. One side of the housing is fixedly connected to a fixed bracket, and one side of the mounting bracket is fixedly connected to the bottom of the fixed bracket. The speed regulation mechanism includes a first bevel gear and a second bevel gear. The first bevel gear is slidably mounted on the transmission rod vertically and coaxially connected thereto. The first bevel gear meshes with the second bevel gear. The motor is slidably mounted on the mounting bracket horizontally. The output shaft of the motor passes through the mounting bracket and is coaxially connected to the bottom of the second bevel gear.

[0013] Preferably, the speed regulation mechanism further includes a telescopic rod, a limiting plate, and a pair of limiting rings. The telescopic rod is fixedly connected to one of the sliders. The telescopic end of the telescopic rod is fixedly connected to one end of the limiting plate. The other end of the limiting plate is sleeved around the transmission rod and slidably connected thereto. The inner wall of the limiting plate abuts against the first bevel gear. The limiting rings are fixedly connected to the periphery of the transmission rod, and the limiting rings abut against the limiting plate.

[0014] Preferably, the speed regulation mechanism further includes a sliding plate and a spring. The bottom of the sliding plate is slidably connected to the periphery of the mounting bracket. The top of the motor is fixedly connected to the bottom of the sliding plate. The output shaft of the motor passes through the bottom wall of the sliding plate and is rotatably connected thereto. The top of the second bevel gear is rotatably connected to the top wall of the sliding plate. One end of the spring is fixedly connected to the mounting bracket, and the other end of the spring is fixedly connected to the sliding plate.

[0015] Preferably, the telescopic rod includes a connecting block, a long cylinder, a sliding rod, and a tension spring. One side of the connecting block passes through the side wall of the sleeve and is fixedly connected to the slider. The bottom of the connecting block is fixedly connected to the top of the long cylinder. The top of the sliding rod passes through the bottom wall of the long cylinder and is slidably connected thereto. The bottom of the sliding rod passes through the limiting plate and is fixedly connected thereto. One end of the tension spring is fixedly connected to the top wall of the long cylinder, and the other end of the tension spring is fixedly connected to the top of the sliding rod.

[0016] Preferably, the dehumidification assembly further includes a scroll fan and a pair of toothed discs. The bottom of the scroll fan passes through the partition plate and is rotatably connected thereto. The teeth on the two toothed discs abut against each other. The top of the top toothed disc is coaxially connected to the bottom of the scroll fan, and the bottom of the bottom toothed disc is coaxially connected to the top of the fan blade.

[0017] Advantages of the present invention:

[0018] 1. When the air humidity is relatively high in the present invention, the cover plate is flipped 90 degrees to block the top of the housing, and the partition plate descends to fit the inclined surface of the inner wall of the housing, so that the top of the housing is in a sealed state. At the same time, the air duct is opened. At this time, the high-speed air flow driven by the rotation of the fan blade flows in through the air duct and flows out from the bottom of the housing, which can avoid the damage of the water vapor in the air to the sensor body. And because the heat generated by the operation of the sensor body is conducted to the air duct through the housing, while the high-speed air flow takes away the heat to reduce the internal temperature of the housing, it can also dry and evaporate the water vapor in the air flow, so as to achieve the effects of extending the service life of the sensor body and improving the detection accuracy.

[0019] 2. While closing the housing, the present invention can drive the first bevel gear to descend, and the first bevel gear always remains engaged with the second bevel gear. Since the bottom diameter of the second bevel gear is larger than its top diameter, the rotation speed of the first bevel gear is increased, thereby increasing the rotation speed of the fan blade, increasing the air volume entering the air duct, and further improving the dehumidification and heat dissipation effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 is a schematic three-dimensional structure of the present invention Figure 1 .

[0022] Figure 2 is a schematic three-dimensional structure of the present invention Figure 2 .

[0023] Figure 3 is a schematic three-dimensional structure of the present invention Figure 3 .

[0024] Figure 4 is a schematic three-dimensional structure of the present invention Figure 4 .

[0025] Figure 5 is a sectional view of the housing structure of the present invention Figure 1 .

[0026] Figure 6 is an exploded view of the switch mechanism structure of the present invention.

[0027] Figure 7 is a sectional view of the long cylinder structure of the present invention.

[0028] Figure 8 is a sectional view of the housing structure of the present invention Figure 2 .

[0029] Figure 9 is an exploded view of the frame and cover plate structure of the present invention.

[0030] Figure 10 is a sectional view of the frame structure of the present invention.

[0031] Figure 11 is Figure 10 an enlarged view of the structure at A in

[0032] Figure 12It is a schematic structural diagram of the speed regulation mechanism of the present invention.

[0033] Figure 13 It is an exploded view of the structure of the dehumidification component of the present invention.

[0034] In the figure:

[0035] 1. Housing; 10. Frame; 11. Cover plate; 110. Compression block; 12. Mounting plate; 13. Sensor body; 14. Fixed bracket;

[0036] 2. Dehumidification component; 20. Partition board; 21. Air duct; 22. Rotating shaft; 23. Switch mechanism; 230. Top plate; 231. Torsion spring; 24. Bracket; 25. Scroll fan; 26. Gear disk;

[0037] 3. Cooling component; 30. Fan blade; 31. Mounting frame; 32. Transmission rod; 33. Motor; 34. Speed regulation mechanism; 340. First bevel gear; 341. Second bevel gear; 342. Telescopic rod; 3420. Connecting block; 3421. Long cylinder; 3422. Slide bar; 3423. Tension spring; 343. Limiting plate; 344. Limiting ring; 345. Slide plate; 346. Spring;

[0038] 4. Switching component; 40. Sleeve; 41. Driving mechanism; 410. Hydraulic rod; 411. Thrust rod; 412. U-shaped plate; 413. Straight gear; 414. Rack; 42. Slide block. Detailed implementation manners

[0039] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation manners.

[0040] Among them, the accompanying drawings are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and should not be construed as a limitation on this patent; in order to better illustrate the embodiments of the present invention, some components in the accompanying drawings will be omitted, enlarged or reduced, and do not represent the dimensions of actual products; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted.

[0041] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components; in the description of the present invention, it should be understood that if terms such as "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so the terms describing the positional relationship in the accompanying drawings are only for illustrative purposes and should not be construed as a limitation on this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0042] In the description of the present invention, unless otherwise clearly specified and defined, if terms such as "connection" are used to indicate the connection relationship between components, such terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] As Figures 1 to 13 shown:

[0044] A high-precision Hall sensor with anti-electromagnetic interference includes a mounting plate 12. One end of the mounting plate 12 is detachably connected to the sensor body 13. It also includes a housing 1, a frame 10, a pair of cover plates 11, a dehumidification component 2, a cooling component 3, and a switching component 4. The frame 10 is vertically slidably mounted on the housing 1. The top of the mounting plate 12 is fixedly connected to the bottom of the frame 10. The two cover plates 11 are respectively hinged to both sides of the frame 10. The periphery of the cover plate 11 is in mutual fit with the inner wall of the top of the housing 1. The dehumidification component 2 includes a partition 20 and a pair of air ducts 21. The partition 20 is vertically movably mounted on the housing 1. The inner wall of the middle part of the housing 1 is in a slope structure and is in mutual fit with the periphery of the partition 20. The air duct 21 is a hollow spiral tubular structure. The two air ducts 21 are symmetrically mounted on both sides of the housing 1. The inner wall of the air duct 21 is in mutual fit with the inner wall of the housing 1. The top of the air duct 21 passes through the top wall of the housing 1 and is fixedly connected to it. The bottom of the air duct 21 passes through the inner wall of the housing 1 and is internally communicated with it. The cooling component 3 includes a fan blade 30. The fan blade 30 is rotatably mounted in the housing 1. The fan blade 30 is located at the bottom of the partition 20. The mounting plate 12 is located at the top of the partition 20. The switching component 4 is mounted on the housing 1. The switching component 4 is used to control the opening and closing of the cover plate 11 and the air duct 21.

[0045] When installing the sensor body 13, first raise the frame 10 to separate the mounting plate 12 from the housing 1. Then, fix the sensor body 13 on the mounting plate 12 with bolts, and then reset the frame 10 to achieve quick installation. During normal operation, the cover plate 11 is in a vertical state and the partition 20 is separated from the inner wall of the housing 1, and the housing 1 is opened. By rotating the fan blade 30, the air flow is driven, and the high-speed air flow passes through the housing 1 and blows the sensor body 13 to achieve a cooling effect.

[0046] When the air humidity is relatively high, the cover plate 11 is rotated 90 degrees to seal the top of the housing 1. The partition plate 20 descends to fit the inclined surface of the inner wall of the housing 1, so that the top of the housing 1 is in a sealed state. At the same time, the air duct 21 is opened. At this time, the high-speed air flow driven by the rotation of the fan blade 30 flows into the housing 1 through the air duct 21 and flows out from the bottom of the housing 1, avoiding the damage of water vapor in the air to the sensor body 13. And because the heat generated by the operation of the sensor body 13 is conducted to the air duct 21 through the housing 1, while the high-speed air flow takes away the heat to reduce the internal temperature of the housing 1, it can also dry and evaporate the water vapor in the air flow, so as to achieve the effects of prolonging the service life of the sensor body 13 and improving the detection accuracy.

[0047] As Figures 5 to 13 shown:

[0048] The dehumidification component 2 further includes a pair of rotating shafts 22 and a pair of switching mechanisms 23. The rotating shaft 22 is fixedly connected to one side of the cover plate 11. The rotating shaft 22 passes through the side wall of the frame body 10 and is rotatably connected thereto. The switching mechanism 23 includes a top plate 230 and a pair of torsion springs 231. One side of the top plate 230 is rotatably connected to the top of the air duct 21. The bottom of the top plate 230 is in contact with the top of the air duct 21. The torsion spring 231 is sleeved around the top plate 230. One end of the torsion spring 231 is fixedly connected to the top plate 230, and the other end of the torsion spring 231 is fixedly connected to the air duct 21. A pressing block 110 is fixedly connected to one side of the cover plate 11. The bottom of the pressing block 110 abuts against the top of one side of the top plate 230.

[0049] When the cover plate 11 rotates to the horizontal state, the top of the housing 1 is closed. At this time, the pressing block 110 on one side of the cover plate 11 presses the top plate 230 downward, causing the top plate 230 to rotate upward and open, and the torsion spring 231 is twisted. Thus, the air duct 21 is opened after the housing 1 is closed to dehumidify the air. When the cover plate 11 rotates to the vertical state, the pressing block 110 is separated from the top plate 230, and the torsion spring 231 rebounds to drive the top plate 230 to rotate back and close the air duct 21, so that the air flow directly cools the sensor body 13 through the housing 1, improving the cooling effect.

[0050] The switching component 4 includes a pair of sleeves 40 and a pair of driving mechanisms 41. The sleeves 40 are fixedly connected to the periphery of the housing 1. The bottom ends of both ends of the frame body 10 are respectively slidably connected to the inner walls of the two sleeves 40. The driving mechanism 41 includes a hydraulic rod 410, a top rod 411, a U-shaped plate 412, a pair of spur gears 413 and a pair of racks 414. The bottom of the hydraulic rod 410 is fixedly connected to the bottom wall of the sleeve 40. The top of the telescopic end of the hydraulic rod 410 is fixedly connected to the bottom of the top rod 411. The top of the top rod 411 is fixedly connected to the U-shaped plate 412. The two racks 414 are symmetrically distributed at both ends of the U-shaped plate 412 and are fixedly connected to its inner wall. The two spur gears 413 are respectively coaxially connected to the two rotating shafts 22. The spur gears 413 are meshed with the racks 414.

[0051] The sleeve 40 is used to support the driving mechanism 41 and the frame 10 to slide up and down. When the frame 10 slides out of the sleeve 40 upwards, the mounting plate 12 can be separated from the housing 1, facilitating the disassembly and assembly of the sensor body 13. When the hydraulic rod 410 works, its telescopic end pushes the ejector rod 411 to slide upwards, and at the same time drives the U-shaped plate 412 and the rack 414 to move upwards. Through the meshing transmission between the spur gear 413 and the rack 414, the rotating shaft 22 and the cover plate 11 are driven to rotate, thereby realizing the opening and closing of the cover plate 11. And the spur gear 413 is located between the two racks 414, so that the cover plate 11 is opened as the ejector rod 411 slides upwards.

[0052] The dehumidification component 2 further includes a pair of brackets 24. The bottom of the bracket 24 is fixedly connected to the top of the partition plate 20. The top of the bracket 24 passes through the bottom wall of the frame 10 and is slidably connected thereto. The bottom of one end of the bracket 24 abuts against the top of the U-shaped plate 412.

[0053] The switching component 4 further includes a slider 42. The slider 42 is fixedly connected to the periphery of the ejector rod 411. The slider 42 is slidably connected to the inner wall of the sleeve 40. The top of the slider 42 abuts against the bottom of the frame 10.

[0054] When the U-shaped plate 412 moves upwards a certain distance, at this time the rack 414 contacts and meshes with the spur gear 413. At the same time, the top of the U-shaped plate 412 abuts against the bottom of the bracket 24. As the ejector rod 411 continues to move, the cover plate 11 is opened and the bracket 24 is lifted, thereby driving the partition plate 20 to rise upwards, so that the bottom of the housing 1 is opened. Similarly, when the ejector rod 411 moves downwards, the cover plate 11 is closed and the partition plate 20 also closes the bottom of the housing 1. The slider 42 is used to ensure the stable sliding between the ejector rod 411 and the sleeve 40. After the cover plate 11 is opened, when the ejector rod 411 continues to move upwards, at this time the top of the slider 42 abuts against the bottom of the frame 10, and the slider 42 pushes the frame 10 to slide out of the sleeve 40 upwards, thereby driving the mounting plate 12 and the sensor body 13 to rise and separate from the housing 1.

[0055] As Figures 2 to 12 shown:

[0056] The cooling component 3 further includes a mounting frame 31, a transmission rod 32, a motor 33 and a speed regulating mechanism 34. The top of the transmission rod 32 is coaxially connected to the bottom of the fan blade 30. The bottom of the transmission rod 32 is rotatably connected to the top of the mounting frame 31. One side of the housing 1 is fixedly connected with a fixing frame 14. One side of the mounting frame 31 is fixedly connected to the bottom of the fixing frame 14. The speed regulating mechanism 34 includes a first bevel gear 340 and a second bevel gear 341. The first bevel gear 340 is slidably mounted on the transmission rod 32 and is coaxially connected thereto. The first bevel gear 340 meshes with the second bevel gear 341. The motor 33 is slidably mounted on the mounting frame 31. The output shaft of the motor 33 passes through the mounting frame 31 and is coaxially connected to the bottom of the second bevel gear 341.

[0057] The speed regulating mechanism 34 further includes a telescopic rod 342, a limiting plate 343 and a pair of limiting rings 344. The telescopic rod 342 is fixedly connected to one of the sliders 42. The telescopic end of the telescopic rod 342 is fixedly connected to one end of the limiting plate 343. The other end of the limiting plate 343 is sleeved around the outer periphery of the transmission rod 32 and is slidably connected thereto. The inner wall of the limiting plate 343 abuts against the first bevel gear 340. The limiting rings 344 are fixedly connected to the outer periphery of the transmission rod 32, and the limiting rings 344 abut against the limiting plate 343.

[0058] The mounting bracket 31 is used to support the motor 33 and the speed regulating mechanism 34, so that the motor 33 is powered on and its output shaft drives the second bevel gear 341 to rotate. Through the meshing transmission between the second bevel gear 341 and the first bevel gear 340, the transmission rod 32 and the fan blade 30 can be driven to rotate, thereby performing cooling and dehumidification.

[0059] When the ejector rod 411 descends, the telescopic rod 342 is driven by the slider 42 to move downward synchronously. The bottom of the telescopic rod 342 drives the limiting plate 343 to move downward. One end of the limiting plate 343 slides downward along the transmission rod 32 and pulls the first bevel gear 340 downward. At this time, the meshing position between the first bevel gear 340 and the second bevel gear 341 drops from the top of the second bevel gear 341 to the bottom. The limiting ring 344 is used to limit the height of the first bevel gear 340 to prevent it from separating from the second bevel gear 341. Since the bottom diameter of the second bevel gear 341 is larger than its top diameter, the rotation speed of the first bevel gear 340 is increased, thereby increasing the rotation speed of the fan blade 30, increasing the air volume entering the air duct 21, and further improving the dehumidification and heat dissipation effects. This avoids the decrease in heat dissipation effect caused by the relatively small diameter of the air duct 21 compared to the housing 1.

[0060] The speed regulating mechanism 34 further includes a sliding plate 345 and a spring 346. The bottom of the sliding plate 345 is slidably connected to the outer periphery of the mounting bracket 31. The top of the motor 33 is fixedly connected to the bottom of the sliding plate 345. The output shaft of the motor 33 passes through the bottom wall of the sliding plate 345 and is rotatably connected thereto. The top of the second bevel gear 341 is rotatably connected to the top wall of the sliding plate 345. One end of the spring 346 is fixedly connected to the mounting bracket 31, and the other end of the spring 346 is fixedly connected to the sliding plate 345.

[0061] The spring 346 is always in a compressed state. When the first bevel gear 340 descends, it will squeeze the second bevel gear 341, causing the sliding plate 345 to drive the second bevel gear 341 and the motor 33 to slide horizontally along the mounting bracket 31, and the spring 346 is further compressed. Conversely, the sliding plate 345 is pushed to slide in the reverse direction by the resilience of the spring 346, so as to ensure that the second bevel gear 341 always meshes with the first bevel gear 340.

[0062] The telescopic rod 342 includes a connecting block 3420, a long tube 3421, a sliding rod 3422 and a tension spring 3423. One side of the connecting block 3420 passes through the side wall of the sleeve 40 and is fixedly connected to the slider 42. The bottom of the connecting block 3420 is fixedly connected to the top of the long tube 3421. The top of the sliding rod 3422 passes through the bottom wall of the long tube 3421 and is slidably connected thereto. The bottom of the sliding rod 3422 passes through the limiting plate 343 and is fixedly connected thereto. One end of the tension spring 3423 is fixedly connected to the top wall of the long tube 3421, and the other end of the tension spring 3423 is fixedly connected to the top of the sliding rod 3422.

[0063] The connecting block 3420 connects the slider 42 and the long tube 3421, allowing them to move synchronously. When the cover 11 flips downward, the telescopic rod 342 drives the limit plate 343 downward, increasing the rotation speed of the fan blades 30. When the cover 11 flips upward, the telescopic rod 342 resets the limit plate 343. When the frame 10 slides upward out of the sleeve 40, the top of the limit plate 343 is abutted by the limit ring 344, preventing the slider 3422 from continuing to rise. At the same time, the long tube 3421 continues to move upward with the slider 42, causing the tension spring 3423 to stretch and the telescopic rod 342 to extend. Conversely, the tension spring 3423 rebounds and drives the long rod back into the long tube 3421, shortening the telescopic rod 342 and consuming the excess travel of the slider 42.

[0064] like Figures 5 to 13 As shown:

[0065] The dehumidification component 2 also includes a turbofan 25 and a pair of gear discs 26. The bottom of the turbofan 25 passes through the partition 20 and is rotatably connected to it. The teeth on the two gear discs 26 are in conflict with each other. The top of the top gear disc 26 is coaxially connected to the bottom of the turbofan 25, and the bottom of the bottom gear disc 26 is coaxially connected to the top of the fan blade 30.

[0066] When the partition 20 is raised, the two toothed discs 26 separate from each other. As the airflow passes through the shell 1, the turbofan 25 is blown to rotate, causing the airflow to form a vortex, making it easier to pass through, while increasing the flow rate of the airflow and improving the cooling effect. When the partition 20 descends, the teeth on the two toothed discs 26 intertwine and interfere with each other so that they can rotate coaxially. As the fan blades 30 rotate, the toothed discs 26 drive the turbofan 25 to rotate, thereby driving the sealed gas in the shell 1 to rotate, improving the thermal conductivity of the shell 1 and the air duct 21, and further improving the heat dissipation and dehumidification effects.

[0067] It should be noted that the above-described specific embodiments are merely preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that various modifications, equivalent substitutions, and variations may be made to the present invention. However, as long as these modifications do not depart from the spirit of the present invention, they are intended to be within the scope of protection of the present invention. Furthermore, certain terms used in the specification and claims of this application are not intended to be limiting; they are intended solely to facilitate a clear description of the positional relationships and functions of various components.

Claims

1. A high-precision Hall sensor with anti-electromagnetic interference, comprising a mounting plate (12), one end of the mounting plate (12) is detachably connected to the sensor body (13), and it is characterized in that, It further includes a housing (1), a frame body (10), a pair of cover plates (11), a dehumidification component (2), a cooling component (3) and a switching component (4). The frame body (10) is vertically slidably installed on the housing (1). The top of the mounting plate (12) is fixedly connected to the bottom of the frame body (10). The two cover plates (11) are respectively hinged to both sides of the frame body (10). The periphery of the cover plate (11) is mutually attached to the inner wall of the top of the housing (1). The dehumidification component (2) includes a partition plate (20) and a pair of air ducts (21). The partition plate (20) is vertically movably installed on the housing (1). The inner wall of the middle part of the housing (1) is of an inclined surface structure and is mutually attached to the periphery of the partition plate (20). The air duct (21) is of a hollow spiral tubular structure. The two air ducts (21) are symmetrically installed on both sides of the housing (1). The inner wall of the air duct (21) is mutually attached to the inner wall of the housing (1). The top of the air duct (21) passes through the top wall of the housing (1) and is fixedly connected thereto. The bottom of the air duct (21) passes through the inner wall of the housing (1) and is internally communicated therewith. The cooling component (3) includes a fan blade (30). The fan blade (30) is rotatably installed in the housing (1). The fan blade (30) is located at the bottom of the partition plate (20). The mounting plate (12) is located at the top of the partition plate (20). The switching component (4) is installed on the housing (1). The switching component (4) is used to control the opening and closing of the cover plate (11) and the air duct (21).

2. The high-precision Hall sensor with electromagnetic interference resistance according to claim 1, characterized in that The dehumidification component (2) further includes a pair of rotating shafts (22) and a pair of switching mechanisms (23). The rotating shaft (22) is fixedly connected to one side of the cover plate (11). The rotating shaft (22) passes through the side wall of the frame body (10) and is rotatably connected thereto. The switching mechanism (23) includes a top plate (230) and a pair of torsion springs (231). One side of the top plate (230) is rotatably connected to the top of the air duct (21). The bottom of the top plate (230) is mutually attached to the top of the air duct (21). The torsion spring (231) is sleeved on the periphery of the top plate (230). One end of the torsion spring (231) is fixedly connected to the top plate (230). The other end of the torsion spring (231) is fixedly connected to the air duct (21). A pressing block (110) is fixedly connected to one side of the cover plate (11). The bottom of the pressing block (110) is mutually abutted against the top of one side of the top plate (230).

3. The high-precision Hall sensor with anti-electromagnetic interference according to claim 2, characterized in that, The switching component (4) includes a pair of sleeves (40) and a pair of driving mechanisms (41). The sleeve (40) is fixedly connected to the periphery of the housing (1). The bottom ends of both ends of the frame body (10) are respectively slidably connected to the inner walls of the two sleeves (40). The driving mechanism (41) includes a hydraulic rod (410), a top rod (411), a U-shaped plate (412), a pair of spur gears (413) and a pair of racks (414). The bottom of the hydraulic rod (410) is fixedly connected to the bottom wall of the sleeve (40). The top of the telescopic end of the hydraulic rod (410) is fixedly connected to the bottom of the top rod (411). The top of the top rod (411) is fixedly connected to the U-shaped plate (412). The two racks (414) are symmetrically distributed at both ends of the U-shaped plate (412) and are fixedly connected to its inner wall. The two spur gears (413) are respectively coaxially connected to the two rotating shafts (22). The spur gear (413) is meshed with the rack (414).

4. An anti-electromagnetic interference high-precision Hall sensor according to claim 3, characterized in that, The dehumidifying component (2) further includes a pair of brackets (24). The bottom of the bracket (24) is fixedly connected to the top of the partition plate (20). The top of the bracket (24) passes through the bottom wall of the frame body (10) and is slidably connected thereto. The bottom of one end of the bracket (24) abuts against the top of the U-shaped plate (412).

5. An anti-electromagnetic interference high-precision Hall sensor according to claim 3, characterized in that, The switching component (4) further includes a slider (42). The slider (42) is fixedly connected to the periphery of the ejector rod (411). The slider (42) is slidably connected to the inner wall of the sleeve (40). The top of the slider (42) abuts against the bottom of the frame body (10).

6. The high-precision Hall sensor with anti-electromagnetic interference according to claim 5, characterized in that, The cooling component (3) further includes a mounting frame (31), a transmission rod (32), a motor (33) and a speed regulation mechanism (34). The top of the transmission rod (32) is coaxially connected to the bottom of the fan blade (30). The bottom of the transmission rod (32) is rotatably connected to the top of the mounting frame (31). One side of the housing (1) is fixedly connected with a fixed frame (14). One side of the mounting frame (31) is fixedly connected to the bottom of the fixed frame (14). The speed regulation mechanism (34) includes a first bevel gear (340) and a second bevel gear (341). The first bevel gear (340) is vertically slidably mounted on the transmission rod (32) and is coaxially connected thereto. The first bevel gear (340) meshes with the second bevel gear (341). The motor (33) is horizontally slidably mounted on the mounting frame (31). The output shaft of the motor (33) passes through the mounting frame (31) and is coaxially connected to the bottom of the second bevel gear (341).

7. An anti-electromagnetic interference high-precision Hall sensor according to claim 6, characterized in that, The speed regulation mechanism (34) further includes a telescopic rod (342), a limiting plate (343) and a pair of limiting rings (344). The telescopic rod (342) is fixedly connected to one of the sliders (42). The telescopic end of the telescopic rod (342) is fixedly connected to one end of the limiting plate (343). The other end of the limiting plate (343) is sleeved on the periphery of the transmission rod (32) and is slidably connected thereto. The inner wall of the limiting plate (343) abuts against the first bevel gear (340). The limiting ring (344) is fixedly connected to the periphery of the transmission rod (32). The limiting ring (344) abuts against the limiting plate (343).

8. An anti-electromagnetic interference high-precision Hall sensor according to claim 6, characterized in that, The speed regulation mechanism (34) further includes a sliding plate (345) and a spring (346). The bottom of the sliding plate (345) is slidably connected to the periphery of the mounting frame (31). The top of the motor (33) is fixedly connected to the bottom of the sliding plate (345). The output shaft of the motor (33) passes through the bottom wall of the sliding plate (345) and is rotatably connected thereto. The top of the second bevel gear (341) is rotatably connected to the top wall of the sliding plate (345). One end of the spring (346) is fixedly connected to the mounting frame (31). The other end of the spring (346) is fixedly connected to the sliding plate (345).

9. An anti-electromagnetic interference high-precision Hall sensor according to claim 7, characterized in that, The telescopic rod (342) includes a connecting block (3420), a long cylinder (3421), a sliding rod (3422) and a tension spring (3423). One side of the connecting block (3420) passes through the side wall of the sleeve (40) and is fixedly connected to the slider (42). The bottom of the connecting block (3420) is fixedly connected to the top of the long cylinder (3421). The top of the sliding rod (3422) passes through the bottom wall of the long cylinder (3421) and is slidably connected thereto. The bottom of the sliding rod (3422) passes through the limiting plate (343) and is fixedly connected thereto. One end of the tension spring (3423) is fixedly connected to the top wall of the long cylinder (3421), and the other end of the tension spring (3423) is fixedly connected to the top of the sliding rod (3422).

10. An anti-electromagnetic interference high-precision Hall sensor according to claim 2, characterized in that, The dehumidification component (2) further includes a scroll fan (25) and a pair of toothed disks (26). The bottom of the scroll fan (25) passes through the partition plate (20) and is rotatably connected thereto. The teeth on the two toothed disks (26) are in contact with each other. The top of the top toothed disk (26) is coaxially connected to the bottom of the scroll fan (25), and the bottom of the bottom toothed disk (26) is coaxially connected to the top of the fan blade (30).

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