Automatic testing mechanism of automobile sensor PSI5 protocol testing device

Abstract

The utility model provides an automatic testing mechanism of an automobile sensor PSI5 protocol testing device, which comprises a vertically arranged mounting plate, a motor is arranged on the mounting plate, a rotating shaft of the motor is connected with a fixing sleeve, the outer side wall of the fixing sleeve is connected with a driving arm, and the driving arm is provided with a linkage groove penetrating through the two sides of the driving arm along the length direction of the driving arm. A sensing device is arranged on the fixing frame, and a triggering part is connected to the driving arm. A swing arm or a rotating shaft structure of the sensor can extend into the linkage groove in the driving arm, and then the driving arm is driven to rotate through the motor, so that the swing arm or the rotating shaft structure of the sensor is driven to rotate, the work of the sensor is simulated, and the test of the sensor is completed. The motor drives the driving arm to rotate, and when the trigger part on the driving arm moves to the sensing device, the sensing device is activated to send a signal for enabling the motor to rotate reversely and reset, so that the driving arm automatically rotates to the initial position after completing the test.

Description

Technical Field

[0001] This utility model relates to the field of sensor testing equipment technology, specifically to an automatic testing mechanism for an automotive sensor PSI5 protocol testing device. Background Technology

[0002] In the automotive electronics field, the PSI5 protocol, as a serial interface protocol specifically designed for communication between sensors and controllers, has been widely used due to its high reliability and strong anti-interference capabilities. Ensuring the reliability of automotive sensor systems communicating based on the PSI5 protocol is crucial, which requires comprehensive verification of the communication function to guarantee accurate data transmission between sensors and controllers.

[0003] Taking angle sensor testing as an example, the conventional testing procedure involves first securing the angle sensor, then reliably connecting the test leads to the sensor's connector. After completing these steps, the sensor's swing arm or rotating shaft needs to be driven to rotate, thereby verifying whether the signal output by the test leads meets expectations. However, in this current testing process, how to achieve automatic driving of the swing arm or rotating shaft has become a critical issue that urgently needs to be addressed.

[0004] Currently, some testing methods on the market still rely on manual operation of the sensor's related structure. This method is inefficient, and due to the differences in human operation, it is difficult to guarantee the consistency and accuracy of the test results. Utility Model Content

[0005] In view of the problems pointed out in the background art, this utility model proposes an automatic testing mechanism for an automotive sensor PSI5 protocol testing device to solve the above-mentioned technical problems.

[0006] The technical solution of this utility model is implemented as follows:

[0007] An automatic testing mechanism for an automotive sensor PSI5 protocol testing device includes a vertically mounted mounting plate, on which a motor is mounted. A fixed sleeve is coaxially connected to the motor's shaft, and a drive arm is connected to the outer wall of the fixed sleeve. The drive arm is axially arranged along the shaft, and a linkage groove extending through both sides of the drive arm is provided along its length. A sensing device is mounted on a fixed frame, and a trigger is connected to the drive arm. The motor drives the drive arm to rotate, and when the trigger moves to the sensing device, the sensing device is activated and sends a signal to reverse and reset the motor.

[0008] The present invention is further configured such that an embedding groove is provided on the side wall of the linkage groove, and a torque sensor is provided in the embedding groove.

[0009] The present invention is further provided that the bottom of the mounting groove is provided with a wire outlet hole that passes through the drive arm.

[0010] The present invention is further configured such that the sensing device is an infrared sensing device.

[0011] The present invention is further configured such that the trigger part is elongated, one end of the trigger part forms a U-shaped holding groove, the holding groove is connected to the drive arm on one side of the linkage groove, and the trigger part is provided with a threaded hole communicating with the holding groove, and a bolt is connected in the threaded hole.

[0012] The present invention is further configured such that the fixed sleeve is provided with a connecting hole for connecting to the rotating shaft, the bottom of the connecting hole is provided with a fixing hole that penetrates the fixed sleeve, the rotating shaft is provided with a threaded hole corresponding to the fixing hole, and a bolt is connected in the fixing hole and the threaded hole.

[0013] The present invention is further provided that the mounting plate is provided with a through hole for the rotating shaft to pass through, and the diameter of the through hole is larger than the diameter of the rotating shaft.

[0014] The present invention is further configured such that, in the axial direction of the rotating shaft, the length of the drive arm is greater than the length of the fixed sleeve.

[0015] The present invention is further provided that the upper side of the mounting plate is provided with a bracket for mounting the sensing device.

[0016] By adopting the above technical solution, the beneficial effects of this utility model are as follows:

[0017] The automatic testing mechanism of the automotive sensor PSI5 protocol testing device provided by this utility model can extend the sensor's swing arm or rotating shaft structure into the linkage groove on the drive arm, and then drive the drive arm to rotate via a motor. This causes the sensor's swing arm or rotating shaft structure to rotate, simulating sensor operation and completing the sensor test. When the trigger part on the drive arm moves to the sensing device, the sensing device is activated and sends a signal to reverse and reset the motor, so that the drive arm automatically returns to its initial position after completing the test.

[0018] The automated testing mechanism described in this application can stably, regularly, reliably, and consistently complete sensor testing. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is a schematic diagram of the structure of the fixing sleeve, driving arm, and sensing device of this utility model.

[0022] Figure 3 This is a schematic diagram of the drive arm of this utility model.

[0023] Figure 4 This is an exploded view of the drive arm and triggering part of this utility model. Figure 1 .

[0024] Figure 5 This is an exploded view of the drive arm and triggering part of this utility model. Figure 2 .

[0025] Figure 6 This is a cross-sectional view of the present invention.

[0026] The following are the labels in the attached diagram: 1. Mounting plate; 2. Motor; 3. Shaft; 4. Fixing sleeve; 5. Drive arm; 6. Linkage groove; 7. Sensing device; 8. Trigger; 9. Mounting groove; 10. Torque sensor; 11. Outlet hole; 12. Holding groove; 13. Threaded hole; 14. Bolt; 15. Connecting hole; 16. Fixing hole; 17. Through hole; 18. Bracket. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] For reference as follows Figures 1-6 The present invention will be described as follows:

[0029] Example: An automatic testing mechanism for an automotive sensor PSI5 protocol testing device includes a vertically mounted mounting plate 1, which serves as the basic support component of the entire automatic testing mechanism. The vertical mounting provides a stable mounting reference for other components such as the motor 2 and the sensing device 7, ensuring the fixation of the relative positions of each component during operation, thereby ensuring the accuracy of transmission and sensing.

[0030] Motor 2 is installed on one side of mounting plate 1. Motor 2 is the power source of the entire mechanism. Motor 2 has forward and reverse rotation functions and can switch directions according to the signal sent by sensing device 7, so as to meet the requirements of rotation test and reverse reset of drive arm 5.

[0031] The rotating shaft 3 of motor 2 extends to the other side of mounting plate 1. A fixed sleeve 4 is coaxially connected to the rotating shaft 3 of motor 2, which can ensure concentricity during power transmission, reduce additional torque caused by eccentricity, and ensure the smooth rotation of drive arm 5.

[0032] A drive arm 5 (such as bolt connection, welding, etc.) is connected to the outer wall of the fixed sleeve 4 to ensure that the drive arm 5 can rotate synchronously with the rotating shaft 3 during the driving process of the motor 2, so as to avoid transmission failure caused by relative slippage.

[0033] The drive arm 5 is long and narrow, and is arranged along the axial direction of the rotating shaft 3. It is a component that directly drives the sensor swing arm or rotating shaft structure.

[0034] The drive arm 5 has a linkage groove 6 running through both sides along its length. The linkage groove 6 provides a space for accommodating and linking the sensor swing arm or rotating shaft structure. By rotating itself, it drives the related structures of the sensor to rotate synchronously, thereby simulating the rotation state of the sensor in actual operation. When the sensor's swing arm or rotating shaft structure extends into the linkage groove 6, the drive arm 5 rotates and transmits torque through the contact between the groove wall and the sensor components, thereby driving the sensor.

[0035] The mounting plate 1 is equipped with a sensing device 7, and the drive arm 5 is connected to a trigger part 8. The motor 2 drives the drive arm 5 to rotate. When the trigger part 8 moves to the sensing device 7, the sensing device 7 is activated and sends a signal to reverse and reset the motor 2.

[0036] The sensing device 7, acting as a position detection component, is used to detect the position of the trigger unit 8. When the trigger unit 8 moves into its sensing range, the sensing device 7 is activated and sends an electrical signal to the control unit of the motor 2 as a command signal for the motor 2 to reverse and reset. The installation position of the sensing device 7 is determined according to the required rotation angle of the drive arm 5 for testing, ensuring that the sensor can complete the test within the preset angle range.

[0037] The trigger part 8 rotates synchronously with the drive arm 5, and its shape and size match the sensing device 7 to ensure accurate detection when it rotates to the position of the sensing device 7. The connection between the trigger part 8 and the drive arm 5 must be firm to avoid positional displacement due to vibration or other factors during rotation, which would affect the accuracy of the sensing.

[0038] Test process:

[0039] First, the sensor is fixedly mounted on the test bench to ensure its stable position during testing. Then, the test leads are reliably connected to the sensor's interface to ensure continuous and accurate data transmission during testing. Finally, the sensor's swing arm or rotating shaft is inserted into the linkage slot 6 on the drive arm 5, creating a linkage between the sensor components and the drive arm 5.

[0040] When motor 2 is started, its shaft 3 drives the fixed sleeve 4 to rotate, which in turn causes the drive arm 5 to rotate around the axis of shaft 3. Since the sensor's swing arm or shaft structure is located within the linkage groove 6, the rotation of the drive arm 5 is transmitted to the sensor component through the groove wall of the linkage groove 6, causing it to rotate synchronously, thereby simulating the sensor's rotation state in actual operation. At this time, the test line outputs the corresponding signal to complete the performance test of the sensor's communication function.

[0041] As the drive arm 5 rotates, its trigger unit 8 rotates accordingly. When the trigger unit 8 moves into the sensing range of the sensing device 7, the sensing device 7 is activated and sends an electrical signal to the control unit of the motor 2. Upon receiving the signal, the control unit controls the motor 2 to reverse, and the drive arm 5 rotates in the opposite direction until it returns to its initial position, preparing for the next test.

[0042] Transmission stability: Power is provided by motor 2, and rigid transmission is achieved through components such as rotating shaft 3 and fixed sleeve 4, so that the rotation angle and speed of drive arm 5 are stable and controllable. This avoids the problem of irregular sensor rotation caused by uneven force and speed changes during manual operation, and ensures the consistency of test conditions.

[0043] High degree of automation: With the cooperation of the sensing device 7 and the triggering unit 8, the drive arm 5 can automatically reverse and reset after the test is completed, without the need for manual intervention, reducing manual operation steps, improving testing efficiency, and avoiding positional errors that may be caused by manual reset.

[0044] Test reliability: The connections between the components are reliable, and there is no obvious slippage or loosening during the transmission process. This ensures that the rotation angle of the sensor is consistent with the preset test angle, so that the test data can accurately reflect the actual performance of the sensor and improve the reliability of the test results.

[0045] The linkage groove 6 has an insertion groove 9 on its side wall, and a torque sensor 10 is installed in the insertion groove 9. The shape and size of the linkage groove 6 are adapted to the torque sensor 10 to achieve precise installation and fixation of the torque sensor 10.

[0046] When the drive arm 5 drives the sensor's swing arm or rotating shaft structure to rotate through the linkage groove 6, the sensor's swing arm or rotating shaft structure will exert a force on the side wall of the linkage groove 6. The position of the mounting groove 9 allows the torque sensor 10 to directly bear this force, improving the sensitivity and accuracy of force detection.

[0047] The torque sensor 10 is embedded in the mounting slot 9. Its core function is to detect in real time the magnitude of the force generated when the drive arm 5 drives the sensor's swing arm or rotating shaft structure to rotate. When the drive arm 5 rotates, the side wall of the linkage slot 6 contacts the sensor's swing arm or rotating shaft structure through the torque sensor 10. The sensor's swing arm or rotating shaft structure will give the torque sensor 10 a reaction force. The torque sensor 10 can convert the physical signal of this force into an electrical signal and transmit it to an external data analysis device or control system through wiring.

[0048] The installation of the torque sensor 10 must ensure that its detection surface is flush with or slightly protrudes from the side wall of the linkage slot 6, ensuring reliable contact with the sensor's swing arm or rotating shaft structure to avoid data distortion due to poor contact. Simultaneously, a reliable fixing method (such as bolt connection, adhesive fixation, etc.) must be used between the torque sensor 10 and the mounting slot 9 to prevent relative movement under force, which would affect detection accuracy.

[0049] The bottom of the mounting slot 9 is provided with a wire outlet hole 11 that passes through the drive arm 5. Its main function is to provide a channel for the wiring of the torque sensor 10. The diameter of the wire outlet hole 11 needs to be determined according to the number and diameter of the wiring of the torque sensor 10, so as to ensure that the wiring can pass through smoothly, while avoiding excessive weakening of the structural strength of the drive arm 5 due to an excessively large hole diameter.

[0050] The sensing device 7 is an infrared sensing device. It senses the trigger unit 8 by emitting infrared light and receiving reflected signals or detecting whether the infrared light is blocked. When the trigger unit 8 moves into the sensing area of ​​the infrared sensing device, it blocks the infrared light path, causing a change in the state of the photoelectric element inside the sensing device 7, which in turn generates an electrical signal. This signal serves as a command to reverse and reset the motor 2. The infrared sensing device features fast response speed and strong anti-interference capability, enabling it to quickly identify the position of the trigger unit 8 during the rotation of the drive arm 5, ensuring the timely issuance of the motor reversal command.

[0051] The trigger part 8 is elongated, with a U-shaped holding groove 12 formed at one end. The holding groove 12 connects to the drive arm 5 on one side of the linkage groove 6. The opening size of the U-shaped holding groove 12 is adapted to the thickness of the drive arm 5, ensuring that the trigger part 8 can be stably engaged on the drive arm 5. The trigger part 8 is provided with a threaded hole 13 communicating with the holding groove 12. A bolt 14 is connected in the threaded hole 13. After the bolt 14 is tightened, it abuts against the drive arm 5 to fix the trigger part 8. This fixing method facilitates the adjustment of the installation position of the trigger part 8 on the drive arm 5.

[0052] The fixed sleeve 4 has a connecting hole 15 for connecting to the rotating shaft 3. The inner diameter of the connecting hole 15 matches the outer diameter of the rotating shaft 3 to ensure concentricity after assembly. The bottom of the connecting hole 15 has a fixing hole 16 that penetrates the fixed sleeve 4. The rotating shaft 3 has a threaded hole 13 corresponding to the fixing hole 16. A bolt 14 connects the fixing hole 16 and the threaded hole 13. During assembly, the bolt 14 passes through the fixing hole 16 and is screwed into the threaded hole 13 of the rotating shaft 3. The axial pressure of the bolt 14 tightly connects the fixed sleeve 4 and the rotating shaft 3, preventing relative rotation during transmission and ensuring reliable power transmission. This bolted connection method facilitates the disassembly and assembly of the fixed sleeve 4. When the fixed sleeve 4 or the drive arm 5 needs maintenance or replacement, it can be quickly separated by removing the bolt 14.

[0053] The mounting plate 1 is provided with a through hole 17 for the rotating shaft 3 to pass through, and the diameter of the through hole 17 is larger than the diameter of the rotating shaft 3.

[0054] Along the axial direction of the rotating shaft 3, the length of the drive arm 5 is greater than the length of the fixed sleeve 4. This size design allows the drive arm 5 to have a longer extension along the axial direction of the rotating shaft 3. On the one hand, it provides sufficient space for the linkage groove 6, making it easy to adapt to sensor swing arms or rotating shaft structures of different lengths. On the other hand, it allows the installation position of the trigger part 8 to be further away from the fixed sleeve 4, avoiding interference from the fixed sleeve 4 on the movement of the trigger part 8, and ensuring that the trigger part 8 can smoothly enter the sensing area of ​​the sensing device 7.

[0055] The upper side of the mounting plate 1 is provided with a bracket 18 for mounting the sensing device 7. The height and angle of the bracket 18 can be adjusted according to the sensing range of the sensing device 7 and the movement trajectory of the trigger part 8 to ensure that the trigger part 8 can be accurately detected by the sensing device 7 when it rotates to the preset position. The bracket 18 is bolted or welded to the mounting plate 1 to ensure the positional stability of the sensing device 7 during operation.

[0056] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic testing mechanism for an automotive sensor PSI5 protocol testing device, comprising a vertically arranged mounting plate, on which a motor is mounted, characterized in that: A fixed sleeve is coaxially connected to the rotating shaft of the motor. A drive arm is connected to the outer wall of the fixed sleeve. The drive arm is arranged along the axial direction of the rotating shaft. A linkage groove is provided on the drive arm along its length direction, passing through both sides. A sensing device is provided on the fixed frame. A trigger part is connected to the drive arm. The motor drives the drive arm to rotate. When the trigger part moves to the sensing device, the sensing device is activated and sends a signal to reverse and reset the motor.

2. The automatic testing mechanism of the automotive sensor PSI5 protocol testing device according to claim 1, characterized in that: The linkage groove has an insert groove on its side wall, and a torque sensor is installed in the insert groove.

3. The automatic testing mechanism of the automotive sensor PSI5 protocol testing device according to claim 2, characterized in that: The bottom of the mounting slot is provided with a cable outlet hole that passes through the drive arm.

4. The automatic testing mechanism of the automotive sensor PSI5 protocol testing device according to claim 1, characterized in that: The aforementioned sensing device is an infrared sensing device.

5. The automatic testing mechanism of the automotive sensor PSI5 protocol testing device according to claim 1, characterized in that: The trigger part is elongated, with one end forming a U-shaped holding groove. The holding groove is connected to the drive arm on one side of the linkage groove. The trigger part is provided with a threaded hole that communicates with the holding groove, and a bolt is connected inside the threaded hole.

6. The automatic testing mechanism of the automotive sensor PSI5 protocol testing device according to claim 1, characterized in that: The fixed sleeve is provided with a connecting hole for connecting to the rotating shaft. The bottom of the connecting hole is provided with a fixing hole that penetrates the fixed sleeve. The rotating shaft is provided with a threaded hole corresponding to the fixing hole. Bolts are connected in the fixing hole and the threaded hole.

7. The automatic testing mechanism of the automotive sensor PSI5 protocol testing device according to claim 1, characterized in that: The mounting plate is provided with a through hole for the rotating shaft to pass through, and the diameter of the through hole is larger than the diameter of the rotating shaft.

8. The automatic testing mechanism of the automotive sensor PSI5 protocol testing device according to claim 1, characterized in that: Along the axis of the rotating shaft, the length of the drive arm is greater than the length of the fixed sleeve.

9. The automatic testing mechanism of the automotive sensor PSI5 protocol testing device according to claim 1, characterized in that: The mounting plate has a bracket for mounting the sensing device on its upper side.

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