Vehicle body height sensor detection device and detection method

Abstract

The invention provides a vehicle body height sensor detection device and method, the device comprises a fixed platform, a rotating platform and a control platform, the control platform integrates a control panel and a programmer, the connection of a sensor and a computer is realized through a data interface, and the online modification of program codes is supported. The fixed platform is provided with an opening and a detachable tool seat, the sensor is fixed by an inserting column and a pressing device of the tool seat, and a stabilizing wheel on the lower side of the tool seat can restrain rotation of the rocker arm and reduce shaking. During offline detection, the control panel performs analog-to-digital conversion on an electric signal of the sensor and then stores the electric signal into the U disk; and data are transmitted to a computer in real time during online detection. The rotating platform drives the indicating strip to drive the rocker arm to rotate through the stepping motor, and the scale ring cooperates with the indicating strip to realize angle measurement. The device can perform off-line detection in a computer-free environment, the sensor does not need to be repeatedly disassembled and assembled in the detection process, the rocker arm can be accurately controlled to rotate, the research and development efficiency and the detection accuracy are effectively improved, and the use limitation and the labor cost are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of sensor detection devices, and particularly relates to a vehicle body height sensor detection device and a detection method. Background Art

[0002] As a key component of an automotive suspension system, the vehicle body height sensor, also known as the axle height sensor, vehicle attitude sensor, or suspension height sensor, is mainly used to accurately measure the attitude changes of the front and rear suspensions of the vehicle body. Its performance directly affects the driving stability, comfort, and safety of the vehicle. During the research and development and design process of the vehicle body height sensor, comprehensive detection of the sensor is a necessary step to ensure its performance meets the standards.

[0003] In the prior art: A test fixing device for a position height sensor is disclosed in the patent with the patent application number CN202220476943.1. A vehicle body height sensor detection device is disclosed in the patent with the patent application number CN202410863506.9. These existing sensor detection devices are mainly applied to the quality detection of sensors after manufacturing, and determine whether the sensors are qualified through specific detection processes.

[0004] However, the following problems still exist in such prior art: 1. During the research and development and design stages of the sensor, not only the performance of the sensor needs to be detected, but also the program code on the internal chip board of the sensor needs to be programmed and modified based on the detection results, and this process often requires multiple repeated detections and programming modifications. During this process, R & D personnel need to frequently disassemble and assemble the sensor on the detection device and the programmer, which is cumbersome to operate, greatly reducing the R & D efficiency and increasing the labor cost and time cost.

[0005] 2. The existing sensor detection devices highly rely on a display device or a computer, and achieve real-time detection by connecting to the display device or the computer. In scenarios where there is no display device or computer, the detection work cannot be carried out, severely restricting the flexibility and application scope of the detection work. Summary of the Invention

[0006] In view of the problems pointed out in the background art, the present invention proposes a vehicle body height sensor detection device and a detection method to solve the above technical problems.

[0007] The technical solution of the present invention is implemented as follows: A vehicle body height sensor detection device, comprising a fixed platform, a rotating platform, and a control platform that are sequentially arranged at intervals from top to bottom; The fixed platform is used to fix the sensor; The rotating platform is used to drive the rocker arm of the sensor to rotate; The control platform is provided with a connected control board and a programmer. The programmer is compatible with the sensor. The control board is provided with a storage medium interface, a power supply interface, a data interface, a reset switch, and a start switch. The control board can control the rotation of the rotating platform. Operating the reset switch, the control board can control the rotating platform to rotate to the initial position. Operating the start switch, the control board can control the rotation of the rotating platform according to a pre-set program.

[0008] The present invention is further configured such that the fixed platform is provided with an installation opening. A tooling seat is provided at a position corresponding to the installation opening on the lower side of the fixed platform. A plugging column is provided at the bottom of the tooling seat. A slotted opening is provided at the bottom of the tooling seat. A pressing device is provided on the upper side surface of the fixed platform.

[0009] The present invention is further configured such that the rotating platform is provided with a rotatable indicating bar. A clamping device for clamping and fixing the rocker arm is provided on the indicating bar. A motor for driving the rotation of the indicating bar is provided on the lower side of the rotating platform. The motor is connected to the control board.

[0010] The present invention is further configured such that an annular scale ring is provided on the upper side surface of the rotating platform. The scale ring is coaxial with the rotation axis of the indicating bar. The indicating bar is located inside the scale ring. One end of the indicating bar is conical.

[0011] The present invention is further configured such that the clamping device includes two clamping arms respectively slidably connected to the indicating bar, and further includes a screw rod threadedly connected to the two clamping arms. Two sections of threads respectively connected to the two clamping arms are provided on the screw rod. The screw rod is rotatably connected to the indicating bar.

[0012] The present invention is further configured such that a detachable and rotatable stabilizing wheel is provided on the lower side surface of the tooling seat. The outer circumferential surface of the rotating end of the rocker arm is in contact with the stabilizing wheel.

[0013] The present invention is further configured such that support connecting rods are respectively vertically provided between the fixed platform and the rotating platform, and between the rotating platform and the control platform.

[0014] An on-line detection method for a vehicle body height sensor includes the following steps: Step 1: Fix and install the sensor on the fixed platform. Step 2: Connect the sensor to the data interface on the control board, connect the computer to the data interface on the control board, and connect the power supply interface on the control board to the power supply. Step 3: Operate the reset switch, and the rocker arm rotates to the initial position. Step 4: Operate the start switch, and the rocker arm starts to rotate. Rotate the rocker arm step by step at a certain angular interval. The rocker arm rotates 5 degrees each time and stays stably at each angular position for 1 - 3 seconds. After the electrical signal output by the sensor stabilizes, the control board collects and records the angular value and the corresponding electrical signal value at this time and transmits them to the computer, and continue to rotate the rocker arm until the entire working angular range of the sensor is covered; Step 5: The analysis software on the computer draws an angle - electrical signal characteristic curve based on the collected data, and compares the actually drawn curve with the theoretical curve provided in the sensor technical specification to determine whether the sensor is qualified.

[0015] An off - line detection method for a vehicle body height sensor includes the following steps: Step 1: Fix and install the sensor on a fixed platform; Step 2: Connect the sensor to the data interface on the control board, connect the power interface on the control board to the power supply, and connect the USB flash drive to the storage medium interface on the control board; Step 3: Operate the reset switch, and the rocker arm rotates to the initial position; Step 4: Operate the start switch, and the rocker arm starts to rotate. Rotate the rocker arm step by step at a certain angular interval. The rocker arm rotates 5 degrees each time and stays stably at each angular position for 1 - 3 seconds. After the electrical signal output by the sensor stabilizes, the control board collects and records the angular value and the corresponding electrical signal value at this time and stores them in the USB flash drive, and continue to rotate the rocker arm until the entire working angular range of the sensor is covered; Step 5: Connect the USB flash drive to the computer. The analysis software on the computer draws an angle - electrical signal characteristic curve based on the data on the USB flash drive, and compares the actually drawn curve with the theoretical curve provided in the sensor technical specification to determine whether the sensor is qualified.

[0016] By adopting the above technical solutions, the beneficial effects of the present invention are as follows: 1. The detection device of the present application is provided with a control board and a programmer compatible with the sensor. After the control board is connected to the computer, the program codes in the chip board and the control board in the sensor can be directly programmed and modified through the programming software on the computer. During the R & D and design stages of the sensor, the program code in the chip board in the sensor is programmed and modified to obtain the theoretical curve of the angle - electrical signal of the sensor. The program code in the control board is programmed and modified to modify the control command of the control board for the rotation of the rocker arm. By adopting the technical solution of the present application, the above operations can be completed with the sensor installed on the fixed platform, without the need to disassemble and assemble the sensor midway, the operation is simpler and more convenient, the R & D efficiency is improved, and the labor and time costs are reduced.

[0017] 2. Since the detection device of the present application is equipped with a programmer, it can be connected to any computer for operation at any time and place. If a programmer is not configured, when the detection device needs to be programmed and modified, it needs to be connected to a computer equipped with a programmer to perform the programming modification, which brings restrictions and inconveniences to the use.

[0018] 3. The detection device of the present application can detect the sensor offline without a computer or a display device. The control board first stores the detected data in a USB flash drive, and then the USB flash drive is connected to a computer to compare and detect the stored data.

[0019] 4. On the detection device of the present application, the vehicle body height sensor is easy to install, firmly fixed, and the rocker arm rotates smoothly, ensuring that the rocker arm rotates precisely according to the predetermined axis and angle, which helps to improve the accuracy of the height sensor design and detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description 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 FIG. 15 is a schematic structural diagram of an existing vehicle body height sensor.

[0022] Figure 2 FIG. 19 is a schematic structural diagram of the present invention.

[0023] Figure 3 FIG. 23 is a side view of the present invention.

[0024] Figure 4 FIG. 27 is a schematic structural diagram of the fixed platform and the tooling seat of the present invention.

[0025] Figure 5 FIG. 31 is a schematic structural diagram of the clamping device of the present invention.

[0026] Figure 6 FIG. 35 is a schematic structure of the present invention Figure 2 .

[0027] Figure 7 FIG. 41 is a schematic structural diagram of the stable wheel arrangement of the present invention.

[0028] Figure 8 FIG. 45 is a schematic structural diagram of the connection between the stable wheel and the rocker arm of the present invention.

[0029] Figure 9 FIG. 49 is a schematic block diagram of the control part of the present invention.

[0030] Description of reference numerals in the drawings: fixed platform 1, opening 11, tooling seat 12, insertion post 13, slotted opening 14, pressing device 15, stabilizing wheel 16, rotating platform 2, indicating bar 21, clamping device 22, clamping arm 221, screw 222, thread 223, chute 224, connecting portion 225, motor 23, graduated ring 24, control platform 3, control board 31, rocker arm 4, support link 5. Detailed implementation manners

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] As follows for reference Figures 1 - 9 The present invention will be described as follows: An embodiment of the vehicle body height sensor described in the present application is: the vehicle body height sensor disclosed in the patent with the patent application number CN202022295400.3.

[0033] Embodiment: A vehicle body height sensor detection device It includes a fixed platform 1, a rotating platform 2, and a control platform 3 that are sequentially arranged at intervals from top to bottom. The fixed platform 1, the rotating platform 2, and the control platform 3 are all plate-like structures arranged horizontally. Each platform has a clear division of labor and cooperates to achieve the functions of sensor detection and program modification.

[0034] The fixed platform 1 is used to fix the sensor; its core function is to provide a stable installation foundation for the vehicle body height sensor. Through a specific fixing structure, it ensures that the sensor remains stable during the detection process, avoiding the influence of factors such as shaking and displacement on the accuracy of the detection result, and providing a reliable physical support for subsequent detection and program modification work.

[0035] The rotating platform 2 is used to drive the rocker arm 4 of the sensor to rotate; this platform is responsible for driving the rocker arm 4 of the sensor to rotate. During the detection process, by precisely controlling the rotation angle and speed of the rocker arm 4, it simulates the actual movement state of the sensor rocker arm when the vehicle body suspension attitude changes, so that the sensor generates corresponding electrical signal outputs, thereby providing a real and effective data source for detecting the performance of the sensor.

[0036] The control platform 3 is the control core of the entire detection device. A connected control board 31 and a programmer are provided on the control platform 3. The programmer can be integrated on the control board 31 or can be set separately. The programmer is compatible with the sensor and the control board 31.

[0037] The control board 31 is equipped with a variety of interfaces and control components: There is a storage medium interface on the control board 31 (used to connect a USB flash drive, and the electrical signals output by the sensor can be stored in the USB flash drive after being converted by the analog-to-digital conversion of the control board 31, facilitating subsequent analysis and processing of data, getting rid of the dependence on real-time display devices, and realizing offline storage of data), a power supply interface (used to connect an external power supply to provide stable power supply for the control board 31 to ensure the normal operation of the entire detection device), a data interface (multiple data interfaces are set up to enable data and signal transmission with devices such as sensors and computers. By connecting with the sensor, the electrical signals output by the sensor can be obtained; when connecting with the computer, control instructions and program codes sent by the computer can be received, and at the same time, the detection data can be transmitted to the computer to achieve two-way data interaction), a reset switch (when operating the reset switch, the control board 31 can control the rotating platform 2 to rotate to the initial position to ensure the consistency of the starting conditions for each detection and improve the accuracy and repeatability of the detection results), and a start switch (after operating the start switch, the control board 31 precisely controls the rotation of the rotating platform 2 according to the pre-set program to achieve an automated detection process).

[0038] When detecting and modifying the program of the vehicle body height sensor, first fix the sensor on the fixed platform 1. The control board 31 controls the rotating platform 2 to drive the rocker arm 4 to rotate according to the pre-examination program to simulate the actual working scenario of the sensor, and the sensor generates an electrical signal output. The control board 31 receives the electrical signal output by the sensor through the data interface, performs analog-to-digital conversion on it, and sends the converted digital signal to the computer or stores it in the USB flash drive connected to the storage medium interface.

[0039] When it is necessary to program and modify the program codes in the internal chip board of the sensor and the control board 31, connect the control board 31 to the computer through the data interface. Since the detection device is equipped with a programmer compatible with the sensor, the computer can directly modify the program codes in the chip board of the sensor and the control board 31 through the programming software via the programmer. In the research and development and design stages of the sensor, by modifying the program code of the sensor chip board, the theoretical curve of the sensor angle - electrical signal can be obtained to optimize the performance of the sensor; by modifying the program code of the control board 31, the control command for the rotation of the rocker arm 4 can be adjusted to make the detection process more in line with the actual requirements and research and development goals.

[0040] Analysis of the advantages of the technical solution: Simplify the operation process and improve the R & D efficiency: Compared with the existing technology, during the R & D and design of the sensor, this detection device does not need to disassemble and assemble the sensor between the detection device and the programmer multiple times. Once the sensor is fixed on the fixed platform 1, a series of operations such as detection, data storage, and program code programming modification can be completed. It avoids the risk of sensor damage caused by frequent disassembly and assembly, significantly reduces the manual operation time, lowers the labor cost, greatly improves the R & D work efficiency, and speeds up the R & D process.

[0041] Enhance the flexibility of use and reduce the usage restrictions: This detection device comes with a built-in programmer and can be connected to any computer for operation. Whether the computer is pre-configured with a programmer or not, as long as the detection device is connected to the computer through the data interface, the program code modification work can be completed using the programming software on the computer. This feature completely gets rid of the dependence on a specific programming computer, breaks the usage scenario restrictions, enables the detection and programming work to be carried out anytime and anywhere, and significantly improves the versatility and practicality of the detection device.

[0042] The electrical signal output by the sensor is stored in the USB flash drive after analog-to-digital conversion by the control board 31. This data storage method brings great convenience to the quality inspection work. The detection data of each sensor can be independently and completely stored in the USB flash drive, forming an exclusive data record. When it is necessary to re-inspect the sensors that have been detected later, the quality inspection personnel do not need to re-build a complex detection environment or rely on real-time detection equipment. They only need to connect the corresponding USB flash drive to a data reading device such as a computer to quickly retrieve the original detection data of the sensor. By comparing the re-inspection data with the original data, it is possible to accurately judge whether the performance of the sensor has changed, greatly improving the re-inspection efficiency and accuracy. In addition, the USB flash drive storage is convenient for data classification management and long-term preservation, facilitating the establishment of a sensor detection data file and providing strong support for product quality traceability.

[0043] An on-line detection method for vehicle body height sensors includes the following steps: Step 1: Fixing and installing the sensor Fixing and installing the vehicle body height sensor on the fixed platform 1 is the basic link of the entire on-line detection process. The fixed platform 1 adopts a fixing device adapted to the outer shape structure of the vehicle body height sensor. For example, through bolt fastening, slot positioning, or clamp clamping, etc., to ensure that the sensor is in a stable state during the detection process. The core purpose of this operation is to prevent the sensor from generating detection errors due to shaking and displacement during the rotation of the rocker arm 4, providing a stable physical condition for accurately obtaining the sensor output signal later. A stable installation state can ensure that the sensor is always in the standard detection position, making the detection data truly reflect the sensor performance and avoiding detection result deviations caused by insecure installation.

[0044] Step 2: Equipment connection and power supply Connect the sensor to the data interface on the control board 31 to establish a data transmission channel between the sensor and the control board 31, enabling the electrical signals output by the sensor to be smoothly transmitted to the control board 31. At the same time, connect the computer to the data interface on the control board 31 to achieve data interaction between the control board 31 and the computer, so as to transmit the detection data to the computer for analysis and processing, and receive the control instructions sent by the computer. In addition, connect the power interface on the control board 31 to the power supply to provide a stable power supply for the entire detection device, ensuring the normal operation of components such as the control board 31 and the rotating platform 2. This series of connection operations constructs the data transmission and energy supply network of the detection system, providing the necessary hardware support for the smooth progress of the detection process, ensuring that each device can work in coordination, and realizing the effective acquisition, transmission, and processing of detection data.

[0045] Step 3: Reset the initial position of the swing arm Operate the reset switch. The control board 31 sends an instruction to the rotating platform 2 according to a preset program, controlling the rotating platform 2 to drive the swing arm 4 to rotate to the initial position. The initial position is the starting reference point of the detection process. The determination of this position is crucial for ensuring the accuracy and consistency of the detection results. Through the reset operation, the possible position deviation of the swing arm 4 during previous operations or parking can be eliminated, enabling each detection to start from the same initial state, ensuring the comparability of the detection data of different sensors, and improving the reliability and repeatability of the detection results. Whether it is a single detection or multiple rechecks, the swing arm 4 being in the accurate initial position is a prerequisite for obtaining accurate detection data.

[0046] Step 4: Rotate the swing arm and collect data After operating the start switch, the control board 31 controls the rotating platform 2 according to a preset program to gradually rotate the swing arm 4 at a certain angular interval. The rotation angle each time is set to 5 degrees (or a smaller degree). At each angular position, the swing arm 4 stays stable for 1 - 3 seconds. This is to enable the sensor to fully respond to the change in the position of the swing arm 4, ensuring that the electrical signal output by the sensor reaches a stable state. When the electrical signal is stable, the control board 31 collects the angular value of the swing arm 4 and the corresponding electrical signal value of the sensor at this time through the data interface, and transmits these data to the computer. In this process, precise angle control and stable signal acquisition are the keys. The 5-degree angular interval can not only ensure full coverage of the working angle range of the sensor but also obtain enough data points within a reasonable detection time to accurately depict the performance characteristics of the sensor. Stable signal acquisition ensures that the obtained data is true and valid, avoiding data errors caused by signal fluctuations. By continuously repeating the above operations and continuously rotating the swing arm 4 until the entire working angle range of the sensor is covered, a complete sensor angle - electrical signal data sequence can be obtained, providing a rich and accurate data basis for subsequent data analysis.

[0047] Step 5: Data Analysis and Result Judgment The analysis software on the computer processes the received detection data. Based on the collected angle values and electrical signal values, it plots the angle-electrical signal characteristic curve of the sensor. This curve visually shows the variation of the electrical signal output of the sensor at different angles and reflects the performance characteristics of the sensor. Subsequently, the analysis software compares the actually plotted curve with the theoretical curve provided in the sensor technical specification. The theoretical curve is based on the design requirements of the sensor and the performance expectations under ideal working conditions. By comparing indicators such as the degree of coincidence and deviation range between the actual curve and the theoretical curve, it can accurately determine whether the sensor meets the technical specification requirements. If the actual curve and the theoretical curve basically coincide within the allowable error range, the sensor is judged to be qualified; if the deviation between the two exceeds the specified range, it indicates that there are performance problems with the sensor and it is judged to be unqualified. This judgment method based on data comparison is objective and accurate, can provide a reliable conclusion for the quality detection of the sensor, effectively screen out qualified products, and ensure product quality.

[0048] An off-line detection method for a vehicle body height sensor includes the following steps: Step 1: Fixing and Installing the Sensor The vehicle body height sensor is firmly installed on the fixed platform 1.

[0049] Step 2: Equipment Connection and Data Storage Preparation The sensor is connected to the data interface on the control board 31 to establish a stable data transmission link between the sensor and the control board 31, so as to ensure that the electrical signals generated by the sensor during the detection process can be transmitted to the control board 31 in real time and accurately. At the same time, the power interface on the control board 31 is connected to an external power supply to provide continuous and stable power supply for the entire detection device to ensure the normal operation of key components such as the control board 31 and the rotating platform 2. In addition, a USB flash drive is plugged into the storage medium interface on the control board 31 to provide a carrier for the storage of detection data. After these series of connection operations are completed, an off-line detection data transmission and storage system is built, enabling the control board 31 to independently complete the collection and storage of detection data without the real-time participation of a computer, and making full preparations for subsequent data processing and analysis.

[0050] Step 3: Resetting the Initial Position of the Rocker Arm The reset switch is operated, and the control board 31 sends a reset instruction to the rotating platform 2 according to the internal preset program logic. After receiving the instruction, the rotating platform 2 accurately controls the rocker arm 4 to rotate to the preset initial position..

[0051] Step 4: Rotating the Rocker Arm and Collecting / Storing Data After the operation start switch is activated, the control board 31 precisely controls the rotating platform 2 according to the pre-set program parameters, causing the swing arm 4 to rotate step by step at fixed angular intervals. The rotation angle each time is set to 5 degrees. After the swing arm 4 rotates to each angular position, it is made to stay stably for 1 - 3 seconds. This short stay time is to ensure that the sensor can fully adapt to the change in the position of the swing arm 4, enabling the electrical signal output by the sensor to reach a stable state. When the electrical signal is stable, the control board 31 quickly acquires the current angular value of the swing arm 4 and the corresponding electrical signal value of the sensor through the data interface, and stores these data in real time into the connected USB flash drive. By continuously repeating the above operations and continuously rotating the swing arm 4 until the entire working angular range of the sensor is covered, a complete and continuous sensor angle - electrical signal data sequence is finally formed in the USB flash drive, providing a detailed and reliable data basis for subsequent data analysis and result determination.

[0052] Step 5: Data Analysis and Result Determination Connect the USB flash drive storing the detection data to the computer, and the professional analysis software pre-installed on the computer reads the data in the USB flash drive. Based on the acquired angular values and electrical signal values, the analysis software uses specific algorithms and drawing programs to draw the angle - electrical signal characteristic curve of the sensor. This curve visually presents the variation law of the electrical signal output of the sensor at different angles, clearly reflecting the performance characteristics of the sensor. Subsequently, the analysis software makes multi-dimensional comparisons between the actually drawn curve and the theoretical curve provided in the sensor technical specification manual. The theoretical curve is constructed based on the design requirements, performance indicators, and parameter models under the ideal working state of the sensor. By comparing the differences between the actual curve and the theoretical curve in aspects such as curve shape, key node values, and deviation ranges, it is possible to accurately determine whether the sensor meets the established technical specification requirements. If the actual curve and the theoretical curve basically coincide within the allowable error range, the sensor is determined to be qualified; if the deviation between the two exceeds the specified error range, it indicates that the sensor has performance defects and is determined to be unqualified.

[0053] Analysis of the Beneficial Effects of the Technical Solution: Flexibility and convenience of offline detection: This detection device innovatively realizes the offline detection of the vehicle body height sensor in an environment without a computer or display device. In actual application scenarios, such as in a production workshop on-site or a field operation environment, it may not be possible to obtain the support of a computer or display device for the detection work in a timely manner. At this time, the control board 31, relying on its built-in data acquisition and storage functions, can independently complete the detection operation of the sensor and store key data such as the detected angle value and electrical signal value in the USB flash drive in real time. After the detection work is completed, just connect the USB flash drive to any computer with data processing capabilities, and the analysis software can be used to deeply process and analyze the stored data. This offline detection mode breaks the dependence of traditional detection methods on real-time data processing devices, greatly expands the application scenarios of the detection device, and improves the flexibility and convenience of the detection work. At the same time, it avoids the problem of detection work stagnation caused by detection environment limitations, effectively improves the detection efficiency, reduces the detection cost, and provides a more efficient and reliable detection solution for enterprise production, product R & D and other links.

[0054] There is an opening 11 penetrating the upper and lower sides of the fixed platform 1, and the opening 11 penetrates the front side of the fixed platform 1. The penetrating structure of the opening 11 provides the necessary space for the installation and disassembly of the sensor and the movement of the internal rocker arm 4. During the installation of the sensor, the opening 11 facilitates the operator to place the sensor into the tooling seat 12 from the upper side of the fixed platform 1, and also creates conditions for the rocker arm 4 to pass through the tooling seat 12 and extend to the lower side, ensuring that the rocker arm 4 can rotate freely during the detection process and simulate the movement in the real working state. The design of the opening 11 penetrating the front side makes the installation path of the sensor smoother, reduces the inconvenience of operation caused by space obstacles during the installation process, and improves the installation efficiency.

[0055] A detachable tooling seat 12 is provided at the position corresponding to the rear end of the opening 11 on the lower side of the fixed platform 1, and the tooling seat 12 is detachably connected to the fixed platform 1 by bolts. The tooling seat 12 has an installation area with openings on the upper side and the front side.

[0056] The detachable design facilitates the replacement and maintenance of the tooling seat 12. When the tooling seat 12 is worn or needs to adapt to different specifications of sensors, it can be quickly disassembled and replaced with a new tooling seat 12, reducing the equipment maintenance cost and time cost.

[0057] The tooling seat 12 has an installation area with openings on the upper side and the front side. This open-structured design fully considers the installation convenience and detection adaptability of the sensor. The upper-side opening facilitates the sensor to be placed into the installation area from above, and the front-side opening provides a channel for the rocker arm 4 of the sensor to extend, ensuring that the rocker arm 4 is not obstructed during the detection process and can swing freely.

[0058] The bottom of the tooling seat 12 is provided with plug-in posts 13 that can limit the horizontal movement of the sensor. There are two plug-in posts 13, and holes corresponding to the plug-in posts 13 are provided on the sensor housing. When the sensor is placed in the installation area of the tooling seat 12, the plug-in posts 13 are inserted into the holes of the sensor housing, thereby effectively limiting the movement of the sensor in the horizontal direction. This fixing method can prevent the sensor from undergoing horizontal displacement due to force during the rotation of the swing arm 4, ensure that the sensor always remains in an accurate detection position, and avoid errors in detection data caused by position deviation.

[0059] The bottom of the tooling seat 12 is provided with a slotted opening 14 that allows the swing arm 4 to pass through and extend to the lower side of the tooling seat 12. The slotted opening 14 runs through the front side and the lower side of the tooling seat 12. On the upper side surface of the fixed platform 1, there is a pressing device 15 for pressing and fixing the sensor placed in the tooling seat 12. The sensor is placed in the tooling seat 12, and the tooling seat 12 and the pressing device 15 limit and fix the housing of the sensor in the up and down direction, and the plug-in posts 13 limit and fix the sensor in the horizontal direction. The swing arm 4 of the sensor passes through the slotted opening 14 and even extends to the lower side of the tooling seat 12.

[0060] After the sensor is placed in the tooling seat 12, the pressing device 15 applies pressure to the housing of the sensor from above, forming a limit and fixation of the sensor housing with the tooling seat 12 in the up and down direction. Combining the limitation of the sensor by the plug-in posts 13 in the horizontal direction, this three-dimensional fixing method realizes an all-round and stable fixing effect on the sensor. During the detection process, no matter how the swing arm 4 rotates, the sensor can maintain a stable position and will not be displaced or shaken due to force, thereby ensuring the accuracy and reliability of the signal output by the sensor and providing a solid guarantee for the effectiveness of the detection result. At the same time, this stable fixing method also reduces the risk of equipment failures that may be caused by the loosening of the sensor, improving the overall stability and service life of the detection device.

[0061] The pressing device 15 has been disclosed in the prior art, so it will not be described in detail in this application.

[0062] The upper side surface of the rotating platform 2 is provided with a rotatable indicating bar 21. The rotation axis of the indicating bar 21 is coaxial with the rotation axis of the swing arm 4. The indicating bar 21 is in a long strip shape, and one end of the indicating bar 21 is conical. The indicating bar 21 undertakes the dual functions of transmitting power and fixing the swing arm 4 during the operation of the rotating platform 2.

[0063] The indicator bar 21 is provided with a clamping device 22 that can clamp and fix the rocker arm 4. The lower side of the rotating platform 2 is provided with a stepper motor 23 that drives the indicator bar 21 to rotate. The stepper motor 23 is connected to the control board 31. The control board 31 controls the rotation of the stepper motor 23 through a pre-examined program. The stepper motor 23 drives the indicator bar 21 to rotate, and the indicator bar 21 drives the rocker arm 4 to rotate. It is the power source of the entire rotational motion. The control board 31 sends precise control instructions to the stepper motor 23 according to the pre-set program, and then drives the stepper motor 23 to run at a specific speed, angle and rotation direction. This program-controlled driving method can ensure that the rotation process of the rocker arm 4 is highly accurate, stable and repeatable, meet the strict requirements for the movement state of the rocker arm 4 during the vehicle height sensor detection process, and provide power guarantee for obtaining accurate and reliable detection data.

[0064] A circular scale ring 24 is provided on the upper side of the rotating platform 2 , and the scale ring 24 is an important component for accurately measuring and indicating the rotation angle of the rocker arm 4 .

[0065] The scale ring 24 is provided with angle scales along its circumference, and these scales serve as reference marks for angle measurement. The scale ring 24 is coaxial with the rotation axis of the indicator bar 21, ensuring that the scale ring 24 can accurately reflect the angle change of the rocker arm 4 driven by the indicator bar 21. The indicator bar 21 is located on the inner side of the scale ring 24, and the tapered end of the indicator bar 21 indicates the angle of rotation on the scale ring 24 (the tapered end acts as a pointer). During the rotation of the indicator bar 21, the tapered end will pass on the scale ring 24 and point to the corresponding angle scale value. The operator can intuitively and accurately obtain the current rotation angle of the rocker arm 4 by observing the scale pointed by the tapered end of the indicator bar 21. This angle indication method based on mechanical structure has the characteristics of strong intuitiveness and high reliability. It does not need to rely on complex electronic measuring equipment, and can meet the real-time monitoring and precise control requirements of the rotation angle of the rocker arm 4 during the detection process of the vehicle height sensor. At the same time, it is also convenient for the operator to quickly adjust the rotation angle of the rocker arm 4 during the detection process to ensure that the detection process proceeds smoothly according to the predetermined plan.

[0066] The clamping device 22 includes two clamping arms 221 that are respectively slidably connected to the indicating bar 21. A sliding groove 224 is provided on the indicating bar 21 along its width direction, providing a sliding track for the two clamping arms 221. The lower ends of the clamping arms 221 are slidably connected to the sliding groove 224, enabling the clamping arms 221 to freely move along the width direction on the indicating bar 21. It also includes a screw rod 222 that is threadedly connected to the two clamping arms 221. Two threads 223 that are respectively connected to the two clamping arms 221 are provided on the screw rod 222. The screw rod 222 is rotatably connected to the indicating bar 21, and a connecting portion 225 for rotatably connecting the screw rod 222 is provided on the indicating bar 21. The connecting portion 225 is located between the two clamping arms 221. The thread directions of the two threads 223 are exactly opposite. When an operator rotates the screw rod 222, due to the opposite thread directions of the two threads 223, according to the principle of screw drive, the two clamping arms 221 will move towards each other or away from each other along the sliding groove 224 under the drive of the screw rod 222. When moving towards each other, the upper ends of the two clamping arms 221 gradually approach and tightly clamp the rocker arm 4, thereby firmly fixing the rocker arm 4 on the indicating bar 21; when moving away from each other, the clamping arms 221 are loosened, facilitating the operator to perform installation or disassembly operations on the rocker arm 4. This clamping method achieved through screw drive has a simple and reliable structure, can provide a stable clamping force, and ensures that there will be no loosening, falling off, etc. during the rotation of the rocker arm 4, effectively guaranteeing the safety and data accuracy of the detection process.

[0067] A detachable and rotatable stabilizing wheel 16 is provided on the lower side surface of the tooling seat 12. Detachable: For example, it is connected to the tooling seat 12 by means of threaded connection, snap connection or pin positioning, etc. This connection method enables the stabilizing wheel 16 to be quickly installed or disassembled according to actual detection requirements. The rotatable characteristic of the stabilizing wheel 16 depends on the internal bearing or bushing structure to ensure free rotation when subjected to external forces. In the installed state, the outer circumferential surface of the rotating end of the rocker arm 4 is in close contact with the stabilizing wheel 16, providing auxiliary support and restraint for the rotation of the rocker arm 4.

[0068] The outer circumferential surface of the rotating end of the rocker arm 4 is in contact with the stabilizing wheel 16. When the rocker arm 4 rotates, due to the contact friction between the two, the rotating end of the rocker arm 4 will drive the stabilizing wheel 16 to rotate synchronously. During the rotation of the stabilizing wheel 16, it can provide a circumferential constraint force for the rotating end of the rocker arm 4. During the rotation of the traditional rocker arm, it is difficult to completely eliminate the shaking and offset phenomena caused by factors such as uneven force and mechanical clearance only relying on the installation and fixation of the sensor itself. However, the existence of the stabilizing wheel 16 forms an additional support point through contact with the rotating end of the rocker arm 4, restricting the unexpected movement of the rocker arm 4 in the circumferential direction. This constraint effect can effectively reduce the radial runout and axial play of the rocker arm 4 during rotation, enabling the rocker arm 4 to rotate more stably according to the predetermined axis and angle accurately. Taking the detection of the vehicle body height sensor as an example, the angle change of the rocker arm 4 is directly related to the output signal of the sensor, and the stability of the rotation of the rocker arm 4 directly affects the accuracy of the detection data. The stabilizing wheel 16 can enable the sensor to output a more stable and accurate electrical signal under the same angle change by ensuring the stable rotation of the rocker arm 4, thereby improving the accuracy of the height sensor measurement and providing a strong guarantee for the reliability of the detection result.

[0069] A rubber ring can be coated around the outer side of the stabilizing wheel 16. The rubber ring material itself has good elasticity and friction, and can provide a closer fitting effect when in contact with the rotating end of the rocker arm 4, enhancing the friction between the two, ensuring that the stabilizing wheel 16 can follow the rotation of the rocker arm 4 more effectively and provide constraints. At the same time, the elasticity of the rubber ring can buffer the impact force and vibration generated during the rotation of the rocker arm 4, reducing the wear and noise caused by rigid contact, and extending the service life of the stabilizing wheel 16 and the rocker arm 4. In addition, the existence of the rubber ring can also prevent the surface of the rocker arm 4 from being scratched or worn to a certain extent, protecting the structural integrity and surface quality of the rocker arm 4.

[0070] The detachable design of the stabilizing wheel 16 endows the detection device with higher flexibility and adaptability. Since the rocker arms 4 of different models and specifications of vehicle body height sensors have different sizes, rotation characteristics and detection requirements, by replacing the stabilizing wheels 16 with different diameters and thicknesses, diverse detection needs can be met. For example, for a sensor with a larger diameter of the rocker arm 4, a stabilizing wheel 16 with a suitable diameter can be replaced to ensure the contact effect and constraint function between the stabilizing wheel 16 and the rocker arm 4; for a sensor with extremely high detection accuracy requirements, a stabilizing wheel 16 with higher accuracy and stability can be selected. In addition, the operator can also choose whether to use the stabilizing wheel 16 according to the actual detection situation, enabling the detection device to better adapt to different detection scenarios and operation requirements.

[0071] During the R & D and design stages of the sensor, it is usually necessary to conduct a 360-degree full-range rotation test on the rocker arm 4 to comprehensively evaluate the performance and characteristics of the sensor. During this process, to avoid the stabilizing wheel 16 interfering with the rotation of the rocker arm 4 and affecting the accuracy of the test results, the operator can remove the stabilizing wheel 16 so that the rocker arm 4 can rotate freely without obstruction, thereby obtaining more real and comprehensive test data.

[0072] When conducting routine inspections on the sensor, since the rocker arm 4 only needs to rotate within its working angle range, using the stabilizing wheel 16 at this time can significantly improve the stability and accuracy of the inspection process. The operator only needs to set the stabilizing wheel 16 outside the working angle range of the rocker arm 4, which will neither affect the normal rotation of the rocker arm 4 within the working angle nor provide effective restraint and support during the rotation of the rocker arm 4, reducing the shaking and deviation of the rocker arm 4, ensuring the stability and accuracy of the sensor output signal, and improving the inspection efficiency and quality. Through this flexible application strategy, the stabilizing wheel 16 can play its best role in different inspection stages and scenarios, further optimizing the overall performance of the vehicle body height sensor inspection device.

[0073] Supporting connecting rods 5 are vertically provided between the fixed platform 1 and the rotating platform 2, and between the rotating platform 2 and the control platform 3 respectively.

[0074] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A vehicle height sensor detection device, characterized in that: It includes a fixed platform, a rotating platform, and a control platform which are arranged in sequence from top to bottom; The fixed platform is used to fix the sensor; The rotating platform is used to drive the rocker arm of the sensor to rotate; The control platform is provided with a connected control panel and a programmer, the programmer is compatible with the sensor, and the control panel is provided with a storage medium interface, a power interface, a data interface, a reset switch, and a start switch; The control panel can control the rotation of the rotating platform; by operating the reset switch, the control panel can control the rotating platform to rotate to the initial position; by operating the start switch, the control panel can control the rotation of the rotating platform according to a pre-set program.

2. A vehicle height sensor detection device according to claim 1, characterized in that: The fixed platform is provided with an installation opening, a tooling seat is provided at the lower side of the fixed platform corresponding to the installation opening, a plug-in column is provided at the bottom of the tooling seat, a slot is provided at the bottom of the tooling seat, and a clamping device is provided on the upper side of the fixed platform.

3. A vehicle height sensor detection device according to claim 1, characterized in that: The rotating platform is provided with a rotatable indicator strip, the indicator strip is provided with a clamping device for clamping and fixing the rocker arm, and the lower side of the rotating platform is provided with a motor for driving the indicator strip to rotate, and the motor is connected to the control board.

4. A vehicle height sensor detection device according to claim 3, characterized in that: A circular scale ring is arranged on the upper side of the rotating platform. The scale ring is coaxial with the rotation axis of the indicator bar. The indicator bar is located inside the scale ring, and one end of the indicator bar is conical.

5. The vehicle height sensor detection device according to claim 3, characterized in that: The clamping device comprises two clamping arms respectively connected to the indicator strip in a sliding manner, and a screw threadedly connected to the two clamping arms. The screw is provided with two sections of threads respectively connected to the two clamping arms, and the screw is rotationally connected to the indicator strip.

6. A vehicle height sensor detection device according to claim 2, characterized in that: A detachable and rotatable stabilizing wheel is arranged on the lower side of the tooling seat, and the outer circumferential surface of the rotating end of the rocker arm is arranged in contact with the stabilizing wheel.

7. The vehicle height sensor detection device according to claim 1, characterized in that: Support connecting rods are vertically arranged between the fixed platform and the rotating platform, and between the rotating platform and the control platform.

8. A vehicle height sensor online detection method, characterized in that: The steps include: Step 1: Install the sensor on a fixed platform; Step 2: Connect the sensor to the data interface on the control board, connect the computer to the data interface on the control board, and connect the power interface on the control board to the power supply; Step 3: Operate the reset switch and rotate the rocker arm to the initial position; Step 4: Operate the start switch, the rocker arm starts to rotate, and gradually rotates the rocker arm at a certain angle interval. The rocker arm rotates 5 degrees each time and stays stable at each angle position for 1-3 seconds. After the electrical signal output by the sensor is stable, the control board collects and records the angle value and the corresponding electrical signal value at this time and transmits them to the computer. Continue to rotate the rocker arm until the entire working angle range of the sensor is covered; Step 5. The analysis software on the computer draws the angle-electrical signal characteristic curve based on the collected data, and compares the actual drawn curve with the theoretical curve provided in the sensor technical specification manual to determine whether the sensor is qualified.

9. A vehicle height sensor offline detection method, characterized in that: The steps include: Step 1: Install the sensor on a fixed platform; Step 2: The sensor is connected to the data interface on the control board, the power interface on the control board is connected to the power supply, and the U disk is connected to the storage medium interface on the control board; Step 3: Operate the reset switch and rotate the rocker arm to the initial position; Step 4: Operate the start switch, the rocker arm starts to rotate, and gradually rotates the rocker arm at a certain angle interval. The rocker arm rotates 5 degrees each time and stays stable at each angle position for 1-3 seconds. After the electrical signal output by the sensor is stable, the control board collects and records the angle value and the corresponding electrical signal value at this time and stores them in the U disk. Continue to rotate the rocker arm until the entire working angle range of the sensor is covered; Step 5. Connect the USB flash drive to the computer. The analysis software on the computer draws the angle-electrical signal characteristic curve based on the data on the USB flash drive. Compare the actual drawn curve with the theoretical curve provided in the sensor technical specification manual to determine whether the sensor is qualified.

Images