Intelligent detection equipment for automobile sensor processing and use method thereof

Abstract

The application discloses a kind of intelligent detection equipment and its use method for automobile sensor processing, it is related to sensor detection technical field, including upper rack, the lower side of the upper rack is fixedly connected with lower rack, the side of the upper rack is fixedly connected with display screen, vibration simulation is realized by airflow drive linkage mechanism, and energy is saved significantly.The device in this paper, when the air pump of high-low temperature simulation mechanism transports airflow to hard pipe, airflow impacts fan plate after being guided by inclined plate, drives first rotating shaft and eccentric wheel to rotate clockwise, and then through the cooperation of connecting rod, slide column and guide slide pipe, drives slide plate and the periodic up-down reciprocating motion of speed sensor, gear ring above, to simulate the vibration condition when automobile travels, the structure ingeniously uses airflow as power source during detection process, without additional configuration vibration motor or exciter, vibration simulation function can be realized simultaneously, reach the beneficial effect of significantly reducing the energy consumption of whole machine, simplify power system.

Description

Technical Field

[0001] This invention relates to the field of sensor detection technology, specifically to an intelligent detection device for automotive sensor processing and its usage method. Background Technology

[0002] With the continuous improvement of automotive electronics and intelligence, automotive sensors are playing an increasingly prominent role in the overall vehicle control system. Commonly used sensor types in automobiles include wheel speed sensors, crankshaft / camshaft position sensors, temperature sensors, pressure sensors, knock sensors, etc. In addition, speed sensors, acceleration sensors, gas concentration sensors, flow sensors, position and angle sensors, as well as millimeter-wave radar and ultrasonic sensors used for advanced driver assistance systems, all require performance testing during the production and processing stage to ensure the stable operation of automotive electronic systems and driving safety.

[0003] Among various sensors, speed sensors are particularly unique. Speed ​​sensors typically employ magnetoelectric or Hall effect principles, requiring a rotating gear ring or signal wheel to generate a signal. When the wheel rotates, the gear ring, synchronized with the wheel, rotates accordingly. The teeth and gaps on the gear ring pass rapidly through the sensor's magnetic field, causing a change in the magnetic reluctance of the magnetic circuit. This results in the sensor outputting an electromotive force pulse of a certain amplitude and frequency. The pulse frequency reflects the speed of the wheel. Therefore, when testing the performance of a speed sensor, its actual working state must be simulated. This usually requires a motor-driven rotating device to rotate the gear ring, while the sensor reads the signal in a stationary state. The output waveform is then observed using an oscilloscope or other equipment to determine whether the sensor is qualified.

[0004] Currently, most speed sensor tests do not incorporate environmental simulation, meaning they are only tested in ideal laboratory conditions with no vibration or extreme temperatures. This fails to capture the sensor's true performance under different environmental conditions. However, after being installed in a vehicle, speed sensors face complex and variable operating conditions such as high and low temperatures and vibration over extended periods. If only routine environmental testing is conducted before shipment, without environmental adaptability tests such as temperature shock and simulated vibration, the sensor's stability and reliability under extreme climates or harsh road conditions cannot be fully assessed. In frigid regions, low-temperature signal drift or startup failure may occur; near hot engine compartments, thermally induced output deviations may occur, leading to intermittent or even complete sensor signal failure. These issues can cause malfunctions such as ABS false triggering, abnormal speed display, and transmission shifting logic confusion during actual vehicle operation, potentially even jeopardizing driving safety in severe cases.

[0005] Therefore, it is necessary to design an intelligent inspection device for automotive sensor processing that can perform environmental simulation. Summary of the Invention

[0006] The purpose of this invention is to provide an intelligent inspection device for automotive sensor processing and its usage method, so as to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an intelligent testing device for automotive sensor processing, comprising an upper frame, a lower frame fixedly connected to the lower side of the upper frame, a display screen fixedly connected to one side of the upper frame, a switch button provided on the lower side of the display screen and fixedly connected to the upper frame, a sealing mechanism for simulating the enclosure of a speed sensor being provided inside the upper frame, a high and low temperature simulation mechanism for simulating high and low temperature environments and indirectly driving the vibration of the sealing mechanism being provided on one side of the lower frame, a support plate fixedly connected inside the upper frame, and a support frame fixedly connected to the lower side of the support plate.

[0008] According to the above technical solution, the high and low temperature simulation mechanism includes an air pump fixedly connected to one side of the lower frame, a first flexible tube fixedly connected to the output end of the air pump, a condenser fixedly connected to the lower side of the closed mechanism, a temperature control box fixedly connected to the upper side of the support frame, the other end of the first flexible tube fixedly connected to the input end of the condenser, a rigid tube fixedly connected to the output end of the condenser, a second flexible tube fixedly connected to the other end of the rigid tube, an inclined plate fixedly connected at an angle inside the rigid tube, a heating rod fixedly connected inside the rigid tube, and the heating rod electrically connected to the temperature control box.

[0009] According to the above technical solution, the sealing mechanism includes a sliding plate slidably connected inside the support plate. Two positioning blocks are fixedly connected to the upper side of the sliding plate. A drive shaft is rotatably connected between the two positioning blocks. A sealing box is fixedly connected to the outer side of the drive shaft. The other end of the second hose passes through the sealing box. A handle is fixedly connected to one side of the sealing box. An exhaust hole is provided on one side of the sealing box.

[0010] According to the above technical solution, a vibration assembly is provided on the lower side of the skateboard. The vibration assembly includes four first springs fixedly connected to the lower side of the skateboard. A fixed cylinder is provided on the outer side of the first spring, and the lower end of the first spring is fixedly connected to the fixed cylinder. The fixed cylinder is fixedly connected to the support frame. A guide tube is fixedly connected below the center of the skateboard. A sliding column is slidably connected to the lower side of the guide tube. A connecting rod is hinged to the lower side of the sliding column. Two eccentric wheels are hinged to the other end of the connecting rod. A first rotating shaft is fixedly connected to the center of one side of each of the two eccentric wheels. A fixed plate is rotatably connected to one of the first rotating shafts, and the fixed plate is fixedly connected to the support frame. Four fan plates are evenly fixedly connected to the outer side of the other first rotating shaft. The fan plates are located inside the rigid tube. An inclined plate is located on one side of the fan plate. One end of the other first rotating shaft is rotatably connected to the rigid tube.

[0011] According to the above technical solution, a motor is fixedly connected to the lower side of the slide plate, the output end of the motor passes through the slide plate and is fixedly connected to a second rotating shaft, a positioning cylinder passes through the inside of the slide plate, several air vents are provided on the outer side of the positioning cylinder, a fan is provided inside the positioning cylinder, the fan is fixedly connected to the outer side of the second rotating shaft, the fan is located below the air vents, the other end of the second rotating shaft passes through the positioning cylinder and is fixedly connected to a gear ring, and limiting plates are provided on both the upper and lower sides of the positioning cylinder, and the limiting plates are fixedly connected to the outer side of the second rotating shaft.

[0012] According to the above technical solution, the upper side of the skateboard is provided with a clamping assembly. The clamping assembly includes a positioning plate fixedly connected to the upper side of the skateboard. The positioning plate has an insertion hole in the middle. The outer side of the insertion hole is uniformly provided with a sliding groove. A clamping block is slidably connected inside the sliding groove. A second spring is fixedly connected to one side of the clamping block. The other end of the second spring is fixedly connected to the sliding groove.

[0013] Compared with the prior art, the beneficial effects achieved by the present invention are: 1. The gas is sequentially fed into the condenser and rigid pipe by the air pump of the high and low temperature simulation mechanism. The condenser cools the gas through heat exchange, obtaining a low-temperature airflow which is then sent into the sealed box, thus simulating the sensor's working state in a frigid environment. The temperature control box controls the heating rod to heat the air flowing through the rigid pipe, obtaining a high-temperature airflow which is then sent into the sealed box, thus simulating the high-temperature engine compartment environment. After completing the low-temperature performance test, there is no need to open the sealed box to expel the cold air. Instead, the condenser is directly closed and the heating rod is activated, causing a large amount of hot air to rush into the sealed box filled with cold air, creating a huge instantaneous temperature difference. This realistically simulates the extreme thermal shock condition where the engine compartment temperature rises to 150 degrees Celsius within seconds after a vehicle starts in a frigid environment of -40 degrees Celsius. This achieves the beneficial effect of comprehensively evaluating the stability and reliability of the sensor in a real and complex environment, effectively avoiding performance evaluation distortion caused by only conducting a single temperature test, and reducing the risk of signal drift, start-up failure, or thermal damage to the sensor in frigid or high-temperature regions.

[0014] 2. Vibration simulation is achieved through an airflow-driven linkage mechanism, significantly saving energy. In this device, when the air pump of the high and low temperature simulation mechanism delivers airflow into the rigid pipe, the airflow is guided by the inclined plate and impacts the fan plate, driving the first rotating shaft and eccentric wheel to rotate clockwise. Then, through the cooperation of the connecting rod, sliding column and guide tube, the sliding plate and the speed sensor and gear ring above it move up and down periodically, thus simulating the vibration conditions of a car in motion. This structure cleverly utilizes the airflow that already exists in the detection process as a power source, eliminating the need for additional vibration motors or exciters to simultaneously achieve vibration simulation. This achieves the beneficial effects of significantly reducing the overall energy consumption and simplifying the power system, effectively avoiding the energy waste and increased equipment costs caused by adding an independent vibration drive device.

[0015] 3. Cooling and uniform temperature distribution are achieved by utilizing the rotation of the shaft itself to drive the fan, avoiding overheating and temperature stratification. When the motor drives the second shaft and gear ring to rotate at high speed, the fan fixed to the outside of the second shaft rotates synchronously, generating forced airflow within the positioning cylinder. This directly cools the surface of the second shaft, effectively preventing bearing seizure due to lubrication failure. Simultaneously, some airflow is ejected at high speed from the outlet of the positioning cylinder, agitating and mixing the locally accumulated hot or cold air within the sealed chamber. This avoids the impact of uneven temperature distribution within the chamber on test results. This cooling and mixing process relies entirely on the rotational power of the shaft itself, eliminating the need for an additional independent cooling fan or stirring device. This achieves the dual benefits of efficient heat dissipation and uniform temperature distribution, ensuring long-term stable operation of the equipment while further saving energy and preventing sensor misjudgments and equipment damage caused by localized overheating or excessive temperature differences. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of an intelligent inspection device for automotive sensor processing according to the present invention; Figure 2 This is a schematic diagram of the internal structure of an intelligent inspection device for automotive sensor processing according to the present invention; Figure 3 This is a schematic diagram of the high and low temperature simulation mechanism in this invention; Figure 4 This is a schematic diagram of the internal structure of the rigid tube in this invention; Figure 5 This is a schematic diagram of the enclosure mechanism and vibration assembly in this invention; Figure 6 This is a schematic diagram of the transmission component in this invention; Figure 7 This is a schematic diagram of the internal structure of the transmission component in this invention; Figure 8 This is a schematic diagram of the internal structure of the clamping component in this invention; In the diagram: 1. Upper rack; 2. Lower rack; 3. Display screen; 4. Enclosure mechanism; 41. Vibration assembly; 411. Guide tube; 412. Sliding column; 413. Connecting rod; 414. Fixing plate; 415. Eccentric wheel; 416. First spring; 417. First rotating shaft; 418. Fan plate; 419. Fixing cylinder; 42. Enclosure box; 421. Limiting plate; 422. Gear ring; 423. Positioning cylinder; 424. Air outlet; 425. Motor; 426. Second rotating shaft; 427. Fan; 43. Handle; 44. Positioning block; 45. Slide plate; 46. Drive shaft; 47. Clamping assembly; 471. Positioning plate; 472. Insertion hole; 473. Second spring; 474. Clamping block; 475. Slide groove; 5. Switch button; 6. High and low temperature simulation mechanism; 61. Air pump; 62. First hose; 63. Condensation chamber; 64. Temperature control box; 65. Inclined plate; 66. Second hose; 67. Rigid tube; 68. Heating rod; 7. Support plate; 8. Support frame. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figure 1-8 The present invention provides a technical solution: an intelligent testing device for processing automotive sensors, including an upper frame 1, a lower frame 2 fixedly connected to the lower side of the upper frame 1, a display screen 3 fixedly connected to one side of the upper frame 1, a switch button 5 provided on the lower side of the display screen 3 and fixedly connected to the upper frame 1, a sealing mechanism 4 for simulating the closed rotation speed sensor inside the upper frame 1, a high and low temperature simulation mechanism 6 for simulating high and low temperature environments and indirectly driving the vibration of the sealing mechanism 4 on one side of the lower frame 2, a support plate 7 fixedly connected to the inside of the upper frame 1, and a support frame 8 fixedly connected to the lower side of the support plate 7.

[0019] The specific description of the above structure is as follows: the display screen 3 is used to display the output waveform of the speed sensor when it is being measured, and the switch button 5 is used to turn the main power supply on or off.

[0020] The high and low temperature simulation mechanism 6 includes an air pump 61 fixedly connected to one side of the lower frame 2. The output end of the air pump 61 is fixedly connected to a first hose 62. A condenser box 63 is fixedly connected to the lower side of the sealing mechanism 4. A temperature control box 64 is fixedly connected to the upper side of the support frame 8. The other end of the first hose 62 is fixedly connected to the input end of the condenser box 63. A rigid tube 67 is fixedly connected to the output end of the condenser box 63. A second hose 66 is fixedly connected to the other end of the rigid tube 67. An inclined plate 65 is fixedly connected at an angle inside the rigid tube 67. A heating rod 68 is fixedly connected inside the rigid tube 67. The heating rod 68 is electrically connected to the temperature control box 64.

[0021] The specific description of the above structure is as follows: the air pump 61 is used to draw gas and pass it sequentially through the first hose 62, the condenser box 63, the rigid pipe 67 and the second hose 66, and finally flow into the interior of the closed box 42.

[0022] When it is necessary to cool the gas to simulate a low-temperature environment, the gas passes through the condenser 63 and cools down mainly by means of heat exchange. The condenser 63 is equipped with a cooling coil or heat exchanger. The coil is filled with a low-temperature cooling medium (such as cold water or refrigerant). When the high-temperature gas flows through the outside of the coil, the heat is transferred to the cooling medium through the tube wall, and the gas temperature drops rapidly. At the same time, the chamber is usually equipped with a fan to force airflow circulation, which accelerates the heat exchange process and makes the cooled air evenly and stably delivered from the outlet, thereby obtaining the required low-temperature airflow and flowing into the interior of the closed chamber 42.

[0023] When it is necessary to heat the gas to simulate a high-temperature environment, the controller inside the temperature control box 64 outputs a control signal based on the difference between the set temperature and the feedback temperature, closes the internal switch, and allows the current from the external power supply to flow through the wires to the heating rod 68 inside the rigid tube 67. When the current passes through the resistance wire inside the heating rod 68, the electrical energy is converted into heat energy due to the Joule effect, causing its surface temperature to rise rapidly, thereby heating the air flowing through the rigid tube 67 and allowing it to flow into the interior of the closed box 42.

[0024] Typically, after testing the high-temperature performance simulation of the speed sensor, the sealed chamber 42 is opened to allow the hot air inside to escape and return it to room temperature before conducting performance tests. After the low-temperature performance simulation, since the vehicle is started in frigid weather of -40°C, the speed sensor needs to operate immediately in the low temperature. Within seconds to minutes, the engine compartment temperature may soar to 150°C, posing a huge challenge to the cold start performance and thermal shock resistance of the speed sensor. Therefore, it is also necessary to conduct a performance test of the speed sensor with a large temperature difference. After the low-temperature performance simulation, there is no need to open the sealed chamber 42 again. The condenser chamber 63 is closed, and the temperature control chamber 64 is opened directly. At this time, a large amount of hot air enters the sealed chamber 42, which is filled with cold air, creating a large temperature difference. The performance of the speed sensor is then simulated again.

[0025] The sealing mechanism 4 includes a slide plate 45 that is slidably connected inside the support plate 7. Two positioning blocks 44 are fixedly connected to the upper side of the slide plate 45. A drive shaft 46 is rotatably connected between the two positioning blocks 44. A sealing box 42 is fixedly connected to the outer side of the drive shaft 46. The other end of the second hose 66 passes through the sealing box 42. A handle 43 is fixedly connected to one side of the sealing box 42. An exhaust hole is provided on one side of the sealing box 42.

[0026] The specific description of the above structure is as follows: the handle 43 is made of heat-insulating material. When a person grasps the handle 43, the closed box 42 rotates along the drive shaft 46, thereby opening or closing the closed box 42. This allows the undetected speed sensor to be placed inside for detection or the speed sensor that has finished detection to be removed. The exhaust port is used to discharge excess air to prevent excessive internal air pressure.

[0027] A vibration assembly 41 is provided on the lower side of the slide plate 45. The vibration assembly 41 includes four first springs 416 fixedly connected to the lower side of the slide plate 45. A fixing cylinder 419 is provided on the outer side of the first spring 416, and the lower end of the first spring 416 is fixedly connected to the fixing cylinder 419. The fixing cylinder 419 is fixedly connected to the support frame 8. A guide tube 411 is fixedly connected below the center of the slide plate 45. A sliding column 412 is slidably connected to the lower side of the guide tube 411. A connecting rod 413 is hinged to the lower side of the sliding column 412. The other end of 3 is hinged to two eccentric wheels 415. A first rotating shaft 417 is fixedly connected to the center of one side of each of the two eccentric wheels 415. One of the first rotating shafts 417 is rotatably connected to a fixed plate 414 and the fixed plate 414 is fixedly connected to the support frame 8. Four fan plates 418 are evenly fixedly connected to the outer side of the other first rotating shaft 417. The fan plates 418 are located inside the rigid tube 67. An inclined plate 65 is located on one side of the fan plate 418. One end of the other first rotating shaft 417 is rotatably connected to the rigid tube 67.

[0028] The specific explanation of the above structure is as follows: In the initial state, the slide plate 45 presses down on the first spring 416 under its own weight, so that the first spring 416 is in a compressed state. When the airflow with a certain velocity flows through the internal channel of the rigid tube 67, the airflow will be guided by the inclined plate 65 and blown towards the surface of the fan plate 418. At this time, the fan plate 418 begins to move under the impetus of the airflow, thereby driving the first rotating shaft 417 fixedly connected to it to rotate clockwise. The rotation of the first rotating shaft 417 further drives the eccentric wheel 415 to rotate synchronously. When the eccentric end (i.e. the protruding part) of the eccentric wheel 415 rotates clockwise, it reaches the highest point (directly above) as it rotates. The slide column 412 will be completely pushed into the interior of the guide tube 411, and the top of the slide column 412 will press against the inner wall of the guide tube 411, thereby pushing the guide tube 411 to move upward as a whole. During this process, the slide plate 45 is driven to move upward by the upward thrust of the guide tube 411, which in turn indirectly drives the speed sensor and the toothed ring 422 that cooperates with it to move upward together. At the same time, the first spring 416, which was originally compressed, is gradually stretched.

[0029] As the eccentric wheel 415 continues to rotate clockwise, causing its eccentric end to pass the highest point and reach the lowest point (directly below), the sliding column 412 will slide outward from the inside of the guide tube 411. At this time, the guide tube 411 loses the support from the eccentric wheel 415, and the sliding plate 45 also loses its support. As a result, the sliding plate 45 falls rapidly downward under the combined action of the elastic restoring force of the first spring 416 and its own weight, thereby indirectly causing the speed sensor and the gear ring 422 to fall downward together. As the eccentric wheel 415 continues to rotate clockwise, the above process is repeated, thereby causing the speed sensor and the gear ring 422 to achieve reciprocating motion, which in turn causes the speed sensor and the gear ring 422 to generate continuous vibration, thus simulating the vibration conditions generated by the car during actual driving.

[0030] A motor 425 is fixedly connected to the lower side of the slide plate 45. The output end of the motor 425 passes through the slide plate 45 and is fixedly connected to a second rotating shaft 426. A positioning cylinder 423 passes through the interior of the slide plate 45. Several air vents 424 are provided on the outer side of the positioning cylinder 423. A fan 427 is provided inside the positioning cylinder 423. The fan 427 is fixedly connected to the outer side of the second rotating shaft 426 and is located below the air vents 424. The other end of the second rotating shaft 426 passes through the positioning cylinder 423 and is fixedly connected to a gear ring 422. Limiting discs 421 are provided on both the upper and lower sides of the positioning cylinder 423 and are fixedly connected to the outer side of the second rotating shaft 426.

[0031] The specific explanation based on the above structure is as follows: The rotational motion generated by the output end of the motor 425 is used to drive the second rotating shaft 426 to rotate synchronously. When the second rotating shaft 426 starts to rotate, the gear ring 422 fixedly installed on it also rotates together. The gaps between the evenly distributed teeth on the gear ring 422 will pass through the magnetic field region of the sensor under test in sequence and quickly, thereby causing periodic changes in the magnetic resistance in the magnetic circuit. This causes the sensor to output a potential pulse signal with a certain amplitude and frequency. The frequency of this pulse signal directly reflects the rotational speed of the gear ring 422, which is equivalent to the speed of a wheel. Finally, the operator can observe the shape, amplitude and frequency of the output waveform in real time through the display screen 3, and judge whether the sensor is qualified.

[0032] During the continuous high-speed rotation of the second shaft 426, the heat generated by friction will cause the shaft temperature to rise continuously. If it is not effectively cooled, the excessively high temperature will cause the grease or lubricating oil inside the bearing supporting the second shaft 426 to fail, which will lead to a vicious cycle of a sharp increase in bearing friction resistance and a further rise in temperature. In severe cases, it may even cause the bearing to seize up, causing the entire rotating mechanism to jam or even be damaged. Therefore, reliable cooling measures must be taken for the second shaft 426.

[0033] Specifically, when the second shaft 426 rotates, the fan 427 installed on the outside of the second shaft 426 will also be driven to rotate synchronously at the same angular velocity. The fan 427 generates continuous airflow in the internal space enclosed by the positioning cylinder 423. This airflow blows directly onto the surface of the second shaft 426, and removes the heat from the shaft surface through forced convection heat transfer, thereby effectively cooling the second shaft 426. At the same time, some air will be ejected at high speed from the air outlet 424 of the positioning cylinder 423, forming an airflow with a certain velocity. This airflow can stir and disperse the hot or cold air that was originally accumulated around the positioning cylinder 423, allowing it to spread and mix fully in the internal space of the closed box 42. This effectively prevents the phenomenon of uneven temperature distribution inside the box caused by the long-term accumulation of local hot or cold air, ensuring that the temperature field of the entire test environment is more uniform and stable.

[0034] The upper side of the slide plate 45 is provided with a clamping assembly 47. The clamping assembly 47 includes a positioning plate 471 fixedly connected to the upper side of the slide plate 45. The positioning plate 471 has an insertion hole 472 in the middle. The outer side of the insertion hole 472 is evenly provided with a sliding groove 475. A clamping block 474 is slidably connected inside the sliding groove 475. A second spring 473 is fixedly connected to one side of the clamping block 474. The other end of the second spring 473 is fixedly connected to the sliding groove 475.

[0035] The specific explanation based on the above structure is as follows: Since the vehicle speed sensor is mostly cylindrical, when it is necessary to clamp the vehicle speed sensor, the vehicle speed sensor is inserted into the socket 472. At this time, since one side of the clamping block 474 is inclined, the inclined surface is squeezed by the vehicle speed sensor, and the clamping block 474 slides into the slide groove 475. The second spring 473 pushes the clamping block 474 with elastic force, thereby clamping the vehicle speed sensor.

[0036] A method for using an intelligent inspection device for automotive sensor processing includes the following steps: S1: Open the closed mechanism 4, place the speed sensor inside the closed mechanism 4 for clamping, drive the rotating part to rotate, and perform performance testing on the speed sensor.

[0037] S2: When the speed sensor is being tested for performance, the high and low temperature simulation mechanism 6 regulates the temperature inside the closed mechanism 4 by supplying hot and cold air to simulate the performance of the speed sensor under high and low temperatures.

[0038] S21: When it is necessary to cool the gas to simulate a low-temperature environment, the gas passes through the condenser 63 and cools down mainly by means of heat exchange. The condenser 63 is equipped with a cooling coil or heat exchanger. The coil is filled with a low-temperature cooling medium (such as cold water or refrigerant). When the high-temperature gas flows through the outside of the coil, the heat is transferred to the cooling medium through the pipe wall, and the gas temperature drops rapidly. At the same time, the chamber is usually equipped with a fan to force airflow circulation, which accelerates the heat exchange process and makes the cooled air evenly and stably delivered from the outlet, thereby obtaining the required low-temperature airflow and flowing into the interior of the closed chamber 42.

[0039] S22: When it is necessary to heat the gas to simulate a high-temperature environment, the controller inside the temperature control box 64 outputs a control signal based on the difference between the set temperature and the feedback temperature, closes the internal switch, and allows the current from the external power supply to flow through the wires through the heating rod 68 inside the rigid tube 67. When the current passes through the resistance wire inside the heating rod 68, the electrical energy is converted into heat energy due to the Joule effect, causing its surface temperature to rise rapidly, thereby heating the air flowing through the rigid tube 67 and flowing into the interior of the closed box 42.

[0040] S23: Usually, after testing the high-temperature performance simulation of the speed sensor, the sealed box 42 is opened to let the hot air inside out and restore it to normal temperature before conducting the performance test. After the low-temperature performance simulation, since the vehicle is started in the frigid weather of -40℃, the speed sensor needs to work immediately in the low temperature. Within a few seconds to a few minutes, the temperature in the engine compartment may soar to 150℃, which puts great pressure on the cold start performance and thermal shock resistance of the speed sensor. Therefore, it is also necessary to conduct a performance test of the speed sensor with a large temperature difference. After the low-temperature performance simulation, there is no need to open the sealed box 42 again. The condenser box 63 is closed, and the temperature control box 64 is opened directly. At this time, a large amount of hot air enters the sealed box 42, which is filled with cold air, forming a large temperature difference. At this time, the performance of the speed sensor is simulated again.

[0041] S3: The high and low temperature simulation mechanism 6 transmits hot and cold air while indirectly driving the closed mechanism 4 to vibrate, so as to simulate the performance of the speed sensor when the car vibrates during driving.

[0042] S31: In the initial state, the slide plate 45 presses down on the first spring 416 under its own weight, so that the first spring 416 is in a compressed state. When the airflow with a certain flow rate flows through the internal channel of the rigid tube 67, the airflow will be guided by the inclined plate 65 and blown towards the surface of the fan plate 418. At this time, the fan plate 418 begins to move under the impetus of the airflow, thereby driving the first rotating shaft 417 fixedly connected to it to rotate in a clockwise direction. The rotation of the first rotating shaft 417 further drives the eccentric wheel 415 to rotate in a clockwise direction in sync.

[0043] S32: When the eccentric end (i.e. the protruding part) of the eccentric wheel 415 reaches the highest point (directly above) as it rotates, the slide column 412 will be completely pushed into the interior of the guide tube 411, and the top of the slide column 412 will press against the inner wall of the guide tube 411, thereby pushing the guide tube 411 to move upward as a whole. During this process, the slide plate 45 is driven to move upward by the upward thrust of the guide tube 411, which in turn indirectly drives the speed sensor and the toothed ring 422 that cooperates with it to move upward together. At the same time, the first spring 416 that was originally compressed is gradually stretched.

[0044] S33: When the eccentric wheel 415 continues to rotate clockwise, causing its eccentric end to pass the highest point and reach the lowest point (directly below), the sliding column 412 will slide outward from the inside of the guide tube 411 for a certain distance. At this time, the guide tube 411 loses the support from the eccentric wheel 415, and the slide plate 45 also loses its support. As a result, the slide plate 45 falls rapidly downward under the combined action of the elastic restoring force of the first spring 416 and its own weight, thereby indirectly causing the speed sensor and the gear ring 422 to fall downward together. As the eccentric wheel 415 continues to rotate clockwise, the above process is repeated, thereby causing the speed sensor and the gear ring 422 to achieve reciprocating motion up and down, thus causing the speed sensor and the gear ring 422 to generate continuous vibration, thereby simulating the vibration conditions generated by the car during actual driving.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0046] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An intelligent inspection device for automotive sensor processing, comprising an upper frame (1), characterized in that, A display screen (3) is fixedly connected to one side of the upper frame (1). A switch button (5) is provided on the lower side of the display screen (3) and is fixedly connected to the upper frame (1). A lower frame (2) is fixedly connected to the lower side of the upper frame (1). A sealing mechanism (4) for simulating the rotation speed sensor is provided inside the upper frame (1). A high and low temperature simulation mechanism (6) for simulating high and low temperature environments and indirectly driving the sealing mechanism (4) to vibrate is provided on one side of the lower frame (2). A support plate (7) is fixedly connected inside the upper frame (1). A support frame (8) is fixedly connected to the lower side of the support plate (7). The high and low temperature simulation mechanism (6) includes an air pump (61) fixedly connected to one side of the lower frame (2), a first hose (62) fixedly connected to the output end of the air pump (61), a condenser box (63) fixedly connected to the lower side of the sealing mechanism (4), a temperature control box (64) fixedly connected to the upper side of the support frame (8), and the other end of the first hose (62) fixedly connected to the input end of the condenser box (63). The output end of the condenser (63) is fixedly connected to a rigid tube (67), the other end of the rigid tube (67) is fixedly connected to a second flexible tube (66), the inside of the rigid tube (67) is fixedly connected to an inclined plate (65), the inside of the rigid tube (67) is fixedly connected to a heating rod (68), and the heating rod (68) is electrically connected to the temperature control box (64). The closing mechanism (4) includes a closed box (42) and a sliding plate (45) that is slidably connected inside the support plate (7); The slide (45) is provided with a vibration assembly (41) on its lower side. The vibration assembly (41) includes four first springs (416) fixedly connected to the lower side of the slide (45). The outer side of the first springs (416) is provided with a fixing cylinder (419) and the lower end of the first springs (416) is fixedly connected to the fixing cylinder (419). The fixing cylinder (419) is fixedly connected to the support frame (8). A guide tube (411) is fixedly connected below the center of the slide plate (45). A slide column (412) is slidably connected to the lower side of the guide tube (411). A connecting rod (413) is hinged to the lower side of the slide column (412). Two eccentric wheels (415) are hinged to the other end of the connecting rod (413). A first rotating shaft (417) is fixedly connected to the center of one side of each of the two eccentric wheels (415). One of the first rotating shafts (417) is rotatably connected to a fixed plate (414), and the fixed plate (414) is fixedly connected to the support frame (8). The other first rotating shaft (417) has four fan plates (418) evenly fixedly connected to its outer side. The fan plates (418) are located inside the rigid tube (67), and the inclined plate (65) is located on one side of the fan plate (418). One end of the other first rotating shaft (417) is rotatably connected to the rigid tube (67).

2. The intelligent inspection equipment for automotive sensor processing according to claim 1, characterized in that, Two positioning blocks (44) are fixedly connected to the upper side of the slide plate (45), and a drive shaft (46) is rotatably connected between the two positioning blocks (44). The enclosed box (42) is fixedly connected to the outside of the drive shaft (46), and the other end of the second hose (66) passes through the enclosed box (42). A handle (43) is fixedly connected to one side of the enclosed box (42), and an exhaust hole is provided on one side of the enclosed box (42).

3. The intelligent inspection equipment for automotive sensor processing according to claim 1, characterized in that, A motor (425) is fixedly connected to the lower side of the slide plate (45). The output end of the motor (425) passes through the slide plate (45) and is fixedly connected to a second rotating shaft (426). A positioning cylinder (423) is connected through the inside of the slide plate (45). Several air vents (424) are provided on the outside of the positioning cylinder (423). A fan (427) is provided inside the positioning cylinder (423).

4. The intelligent inspection equipment for automotive sensor processing according to claim 3, characterized in that, The fan (427) is fixedly connected to the outside of the second rotating shaft (426). The fan (427) is located below the air outlet (424). The other end of the second rotating shaft (426) passes through the positioning cylinder (423) and is fixedly connected to a gear ring (422). The upper and lower sides of the positioning cylinder (423) are provided with limiting plates (421), and the limiting plates (421) are fixedly connected to the outside of the second rotating shaft (426).

5. The intelligent inspection equipment for automotive sensor processing according to claim 1, characterized in that, The upper side of the slide plate (45) is provided with a clamping assembly (47). The clamping assembly (47) includes a positioning plate (471) fixedly connected to the upper side of the slide plate (45). The positioning plate (471) has an insertion hole (472) in the middle and a sliding groove (475) is uniformly provided on the outer side of the insertion hole (472).

6. The intelligent inspection equipment for automotive sensor processing according to claim 5, characterized in that, The sliding groove (475) is slidably connected to a clamping block (474), and a second spring (473) is fixedly connected to one side of the clamping block (474). The other end of the second spring (473) is fixedly connected to the sliding groove (475).

7. A method of using an intelligent inspection device for automotive sensor processing, comprising using the intelligent inspection device for automotive sensor processing as described in any one of claims 1-6, characterized in that, Includes the following steps: S1: Open the closing mechanism (4), place the speed sensor inside the closing mechanism (4) for clamping, drive the rotating part to rotate and perform performance testing on the speed sensor; S2: When the speed sensor is tested for performance, the high and low temperature simulation mechanism (6) adjusts the temperature inside the closed mechanism (4) by supplying hot and cold air to simulate the performance of the speed sensor under high and low temperatures. S3: The high and low temperature simulation mechanism (6) transmits hot and cold air and indirectly drives the closed mechanism (4) to vibrate, so as to simulate the performance of the speed sensor when the car vibrates.

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