Automotive combination switch detection system based on 3D Hall sensor

Abstract

This application discloses a vehicle combination switch testing system based on a 3D Hall sensor, comprising a control module, a data acquisition module, and a communication module. The control module includes a lead screw and a slide rail, and a drive component. A first slider and a second slider are mounted on the lead screw and slide rail. The drive component is connected to the lead screw and slide rail. The data acquisition module includes an upper force sensor and a lower force sensor. The upper force sensor is mounted on the first slider. The lower force sensor is mounted on the second slider. The handle of the vehicle combination switch is located between and corresponds to the upper and lower force sensors. The communication module is connected to the vehicle combination switch. The communication module is configured to determine the position state of the handle of the vehicle combination switch. This application not only saves physical effort and improves testing efficiency, but also collects signal change values ​​during the testing process, enabling accurate determination of whether the combination switch calibration results meet technical requirements.

Description

Technical Field

[0001] This application relates to an automotive combination switch detection system, and more particularly to an automotive combination switch detection system based on a 3D Hall sensor. Background Technology

[0002] Currently, combination switches based on 3D Hall sensors, after calibration, require the detection and recording of the actual gear position signal angle and force values ​​for each product according to process requirements. Specifically, the process requirements for the combination switch are a lane change trigger angle of 4±0.5° and a steering trigger angle of 10±0.5°. Taking the process testing of the left steering handle switch as an example, under standard conditions, the signal changes sequentially during left steering movement: steering OFF, left lane change, left steering. Specifically, a rotation of 0-4° indicates an OFF signal, 4-10° indicates a left lane change signal, and a rotation greater than 10° indicates a left steering signal. However, in actual process testing, the manual operation of the handle results in a left lane change feel angle of 6° and a left steering feel angle of 12°. Therefore, manual operation of the handle can only obtain the switch signal status at the feel points of 6° and 12°, and cannot determine the switch function based on the force and steering angle data during handle movement. Utility Model Content

[0003] This application provides a detection system for automotive combination switches based on a 3D Hall sensor, which solves the problem that current automotive combination switches based on 3D Hall sensors cannot accurately determine the angle and force values ​​of signal changes during the operation of the combination switch to the target gear by manually operating the handle lever.

[0004] To solve the above-mentioned technical problems, this application is implemented as follows: Firstly, a detection system for automotive combination switches based on a 3D Hall effect sensor is provided, comprising a control module, a data acquisition module, and a communication module. The control module includes a lead screw and a slide rail, and a drive component. A first slider and a second slider are mounted on the lead screw and slide rail. The drive component is connected to the lead screw and slide rail and configured to drive the first and second sliders to slide in the same direction along the lead screw and slide rail. The data acquisition module includes an upper force sensor and a lower force sensor. The upper force sensor is mounted on the first slider, and the lower force sensor is mounted on the second slider. The handle of the automotive combination switch is located between and corresponds to the upper and lower force sensors. The drive component drives the first and second sliders to slide along the lead screw and slide rail, thereby causing the upper or lower force sensor to contact and push the handle of the automotive combination switch. The upper or lower force sensor collects the pushing force of the handle. The communication module is connected to the automotive combination switch and is configured to determine the position state of the handle of the automotive combination switch.

[0005] In one embodiment, it further includes an industrial computer connected to the control module, the data acquisition module, and the communication module.

[0006] In one embodiment, the control module includes a programmable logic controller (PLC) and a servo driver. The industrial computer is connected to the PLC, the PLC is connected to the servo driver, and the servo driver is connected to a drive unit.

[0007] In one embodiment, the physical layer of the industrial control computer interacts with the programmable logic controller via a network cable, and the application layer interacts with the programmable logic controller via OPC.

[0008] In one embodiment, the drive element uses a servo motor.

[0009] In one embodiment, the data acquisition module includes an analog acquisition card, an industrial control computer connected to the analog acquisition card, and the analog acquisition card connected to an upper force sensor and a lower force sensor.

[0010] In one embodiment, the upper force sensor and the lower force sensor have a preset value. When the pushing force is greater than the preset value for the first time, the driving component drives the first slider and the second slider to slide in opposite directions until the pushing force is zero. The industrial control computer records the position of the first slider or the second slider as the initial angle of gear operation and uses it as the starting point for curve acquisition and plotting. The industrial control computer plots the curve based on the pushing force collected during the process of pushing the handle of the car combination switch to the target gear.

[0011] In one embodiment, the analog acquisition card uses a PCI bus data acquisition card.

[0012] In one embodiment, the communication module uses a CANFD communication module.

[0013] In one embodiment, the communication module is connected to the industrial computer via a universal serial bus.

[0014] Compared with the prior art, this application has the following beneficial technical effects: This application uses a control module to drive the first and second sliders to slide in the same direction along a lead screw rail, thereby causing the upper or lower force sensor to contact and push the handle of the automotive combination switch. This not only saves physical effort but also improves testing efficiency. This application simultaneously uses the upper or lower force sensor to collect the pushing force of the handle, thus collecting signal changes during the testing process. This allows for accurate determination of whether the combination switch calibration results meet technical requirements. By recording images and raw data, it provides evidence for product quality assessment, solving the problems of manual handle operation which can only test the signal at two tactile points, making it impossible to judge the signal throughout the entire handle operation process, and the inability to accurately determine whether the handle's force value meets technical requirements based solely on tactile feedback due to varying levels of operator skill. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a block diagram of the automotive combination switch detection system based on a 3D Hall sensor according to this application; Figure 2 This is a schematic diagram of the switching signal, driving force, and steering angle of this application. Detailed Implementation

[0016] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0017] Please see Figure 1 and Figure 2 This is a block diagram of the automotive combination switch detection system based on a 3D Hall sensor according to this application. Figure 2 This is a schematic diagram of the curves representing the switching signal, driving force, and steering angle of this application. As shown in the figure, the automotive combination switch detection system 1 based on a 3D Hall sensor in this embodiment includes a control module 2, a data acquisition module 3, a communication module 4, and an industrial computer 5. The industrial computer 5 is connected to the control module 2, the data acquisition module 3, and the communication module 4. The industrial computer 5 is used to realize human-machine interaction control with the control module 2 and to collect judgment information from the data acquisition module 3 and the communication module 4. The control module 2 includes a lead screw slide rail 21 and a drive component 22. A first slider 211 and a second slider 212 are provided on the lead screw slide rail 21. The drive component 22 is connected to the lead screw slide rail 21. The drive component 22 is configured to drive the first slider 211 and the second slider 212 to slide in the same direction along the lead screw slide rail 21. In this embodiment, the control module 2 includes a programmable logic controller (PLC) 23 and a servo driver 24. The industrial computer 5 is connected to the programmable logic controller 23. The physical layer of the industrial control computer 5 interacts with the programmable logic controller 23 via a network cable, and the application layer interacts with it via OPC. The programmable logic controller 23 is connected to the servo driver 24, and the servo driver 24 is connected to the drive unit 22. The drive unit 22 uses a servo motor.

[0018] The data acquisition module 3 includes an upper force sensor 31 and a lower force sensor 32. The upper force sensor 31 is disposed on the first slider 211. The lower force sensor 32 is disposed on the second slider 212. The handle S1 of the automotive combination switch is located between the upper force sensor 31 and the lower force sensor 32 and corresponds to the upper force sensor 31 and the lower force sensor 32. The driving member 22 drives the first slider 211 and the second slider 212 to slide along the lead screw rail 21, thereby causing the upper force sensor 31 or the lower force sensor 32 to contact and push the handle S1 of the automotive combination switch S. The upper force sensor 31 or the lower force sensor 32 collects the pushing force of the handle S1. In this embodiment, the data acquisition module 3 includes an analog acquisition card 33. The industrial control computer 5 is connected to the analog acquisition card 33. The analog acquisition card 33 is connected to the upper force sensor 31 and the lower force sensor 32. The analog acquisition card is a PCI bus data acquisition card. The upper force sensor 31 or the lower force sensor 32 converts the signal into a voltage signal through an amplifier and then connects it to the PCI analog acquisition card through a shielded cable.

[0019] Communication module 4 is connected to the vehicle combination switch S. Communication module 4 is configured to determine the position state of the handle S1 of the vehicle combination switch S. The position state of handle S1 includes the initial position state, lane change position state, and steering position state. In this embodiment, communication module 4 uses a CANFD communication module. Communication module 4 is connected to the industrial computer 5 via a Universal Serial Bus (USB).

[0020] The automotive combination switch detection system 1 based on 3D Hall sensors in this embodiment uses the drive component 22 of the control module 2 to drive the first slider 211 and the second slider 212 to slide in the same direction along the lead screw rail 21. This causes the upper force sensor 31 or the lower force sensor 32 to contact and push the handle S1 of the automotive combination switch S. This not only saves physical effort but also improves detection efficiency. At the same time, the upper force sensor 31 or the lower force sensor 32 collects the pushing force of the handle S1. This allows for the collection of signal change values ​​during the testing process, enabling accurate determination of whether the combination switch calibration results meet technical requirements. By recording images and raw data, it provides a basis for product quality improvement. This solves the problems that manual operation of the handle can only test whether the signals at two tactile points meet the standards, and cannot determine the signals during the entire operation of the handle. It also addresses the issue that due to varying levels of human skill, it is impossible to accurately determine whether the force value of the handle meets technical requirements based solely on tactile sensation.

[0021] In this embodiment, the upper force sensor 31 and the lower force sensor 32 have a preset value. When the pushing force is greater than the preset value for the first time, the driving member 22 drives the first slider 211 and the second slider 212 to slide in opposite directions until the pushing force is zero. The industrial control computer 5 records the position of the first slider 211 or the second slider 212 as the initial angle of gear operation and uses it as the starting point for curve acquisition and plotting. The industrial control computer 5 plots the curve based on the pushing force collected during the process of pushing the handle of the car combination switch S to the target gear.

[0022] Specifically, such as Figure 1 and Figure 2 As shown, the industrial control computer 5 interacts with the programmable logic controller 23 and controls the drive unit 22 via the servo driver 24. This drives the first slider 211 and the second slider 212 to slide along the lead screw rail 21, causing the upper force sensor 31 to contact and push the handle S1 of the automotive combination switch S. The upper force sensor 31 collects the pushing force of the handle S1. When the pushing force first exceeds a preset value, it indicates that the lever has contacted the handle S1. The drive unit 22 then drives the first slider 211 and the second slider 212 to slide in the opposite direction until the pushing force is zero. This is to eliminate the angle and force deviation when searching for the zero position. At this point, the system records this position information as the initial angle of gear operation, and the curve is collected and plotted from this starting point. Then, the industrial control computer 5 continues to control the first slider 211 and the second slider 212 to slide along the lead screw rail 21, causing the upper force sensor 31 to contact and push the handle S1 of the automotive combination switch S. The industrial control computer 5 plots a curve based on the pushing force collected during the process of pushing the handle of the automotive combination switch S to the target gear. In this way, by analyzing curve data, the maximum force value of different gear curves, displacement angle and force value during gear signal switching, and other parameters are obtained, and then judged and recorded. This allows for accurate detection of the functional status of the handle S1 after product calibration, thus improving the product quality of the combination switch S.

[0023] In summary, this application provides a detection system for automotive combination switches based on a 3D Hall sensor. The system uses a control module to drive a first and second slider to slide in the same direction along a lead screw rail, causing an upper or lower force sensor to contact and push the handle of the automotive combination switch. This not only saves physical effort but also improves detection efficiency. This application simultaneously collects the pushing force of the handle using either the upper or lower force sensor, thus capturing signal changes during the testing process. This allows for accurate determination of whether the combination switch calibration results meet technical requirements. By recording images and raw data, it provides evidence for product quality assessment, solving the problems of manual handle operation which can only test the signal at two tactile points, making it impossible to judge the signal throughout the entire handle's operation, and the inability to accurately determine the force value of the handle based solely on tactile feedback due to varying levels of operator skill.

[0024] It should be noted that, in this document, 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 a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0025] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A detection system for automotive combination switches based on a 3D Hall sensor, characterized in that, include: The control module includes a lead screw slide rail and a drive component. The lead screw slide rail is provided with a first slider and a second slider. The drive component is connected to the lead screw slide rail and is configured to drive the first slider and the second slider to slide in the same direction along the lead screw slide rail. The data acquisition module includes an upper force sensor and a lower force sensor. The upper force sensor is disposed on the first slider, and the lower force sensor is disposed on the second slider. The handle of the automotive combination switch is located between the upper force sensor and the lower force sensor and corresponds to the upper force sensor and the lower force sensor. The driving component drives the first slider and the second slider to slide along the lead screw rail, thereby causing the upper force sensor or the lower force sensor to contact and push the handle of the automotive combination switch. The upper force sensor or the lower force sensor collects the pushing force of the handle. A communication module is connected to the vehicle combination switch, and the communication module is configured to determine the position state of the handle of the vehicle combination switch.

2. The automotive combination switch detection system based on a 3D Hall sensor according to claim 1, characterized in that, Also includes: An industrial control computer is connected to the control module, the data acquisition module, and the communication module.

3. The automotive combination switch detection system based on a 3D Hall sensor according to claim 2, characterized in that, The control module includes a programmable logic controller (PLC) and a servo driver. The industrial computer is connected to the PLC, the PLC is connected to the servo driver, and the servo driver is connected to the drive unit.

4. The automotive combination switch detection system based on a 3D Hall sensor according to claim 3, characterized in that, The industrial control computer's physical layer interacts with the programmable logic controller via a network cable, and its application layer interacts with the programmable logic controller via OPC.

5. The automotive combination switch detection system based on a 3D Hall sensor according to claim 3, characterized in that, The drive unit uses a servo motor.

6. The automotive combination switch detection system based on a 3D Hall sensor according to claim 2, characterized in that, The data acquisition module includes an analog acquisition card, the industrial control computer is connected to the analog acquisition card, and the analog acquisition card is connected to the upper force sensor and the lower force sensor.

7. The automotive combination switch detection system based on a 3D Hall sensor according to claim 2, characterized in that, The upper force sensor and the lower force sensor have a preset value. When the pushing force is greater than the preset value for the first time, the driving component drives the first slider and the second slider to slide in opposite directions until the pushing force is zero. The industrial control computer records the position of the first slider or the second slider as the initial angle of gear operation and uses it as the starting point for curve acquisition and plotting. The industrial control computer plots the curve based on the pushing force acquired during the process of pushing the handle of the car combination switch to the target gear.

8. The automotive combination switch detection system based on a 3D Hall sensor according to claim 6, characterized in that, The analog acquisition card is a data acquisition card that uses the PCI bus.

9. The automotive combination switch detection system based on a 3D Hall sensor according to claim 2, characterized in that, The communication module uses the CANFD communication module.

10. The automotive combination switch detection system based on a 3D Hall sensor according to claim 2 or 9, characterized in that, The communication module is connected to the industrial control computer via a universal serial bus.

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