Vehicle-mounted touch screen testing device and testing method

Abstract

The invention relates to the technical field of automatic testing, in particular to a vehicle-mounted touch screen testing device and method. The testing device comprises a moving mechanism, a mechanical arm and a contact mechanism. The moving mechanism comprises a moving seat and a rotating disc, the moving seat is mounted on a sliding rail of a co-driver seat, and the rotating disc is rotationally mounted on the moving seat; the mechanical arm is installed on the rotating disc and comprises a plurality of rotatable telescopic arms and an included angle adjusting mechanism, and the rotatable telescopic arms are sequentially connected through the included angle adjusting mechanism. The contact mechanism is installed on the mechanical arm and comprises an angle detection module and a contact module, the angle detection module is used for detecting the angle of a screen, and the contact module is used for touching the screen. According to the testing device, testing can be completed in situ on the vehicle, the touch angle can be automatically adjusted, and the accuracy and reliability of the testing result of the vehicle-mounted touch screen are improved.

Description

Technical Field

[0001] This invention relates to the field of automated testing technology, and in particular to a vehicle-mounted touchscreen testing device and testing method. Background Technology

[0002] In the field of automotive electronics testing, automated testing equipment is often used to simulate human touch operations in order to ensure the reliability of in-vehicle touch screens. This testing equipment uses mechanical actuators in conjunction with control modules to simulate human actions such as clicking and swiping on the screen, thereby testing screen performance.

[0003] Existing vehicle touch screen testing mostly uses general-purpose automated testing equipment. This type of equipment includes a robotic arm, touch actuators, and a control module. The screen is tested on a laboratory bench, and the robotic arm angle is set to a preset fixed parameter.

[0004] The existing technology has significant drawbacks: First, the testing method, which is detached from the original vehicle environment, cannot reproduce the actual working state of the screen, leading to distorted test results. Second, the angle of the robotic arm cannot be adjusted according to the screen installation angle of different vehicle models, which can easily result in the touch actuators not being perpendicular to the screen, affecting the accuracy of the test data. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide an in-vehicle touchscreen testing device and method, which solves the technical problems that existing general-purpose testing equipment cannot adapt to the in-vehicle testing environment and cannot automatically adjust the angle of the touch execution component according to the screen installation angle. The device can complete the test in the in-vehicle location and can automatically adjust the touch angle, thereby improving the accuracy and reliability of the in-vehicle touchscreen test results.

[0006] To achieve the above objectives, the embodiments of the present invention provide the following technical solutions:

[0007] A vehicle-mounted touchscreen testing device includes: a moving mechanism, a robotic arm, and a touch mechanism; the moving mechanism includes a moving base and a rotating disk, the moving base being mounted on a slide rail of the passenger seat, and the rotating disk being rotatably mounted on the moving base; the robotic arm is mounted on the rotating disk and includes several rotatable telescopic arms and an angle adjustment mechanism, the several rotatable telescopic arms being connected sequentially through the angle adjustment mechanism; the touch mechanism is mounted on the robotic arm and includes an angle detection module and a touch module, the angle detection module being used to detect the screen angle, and the touch module being used to touch the screen.

[0008] Optionally, the contact mechanism further includes a support rod and a telescopic rod. The support rod is mounted on the robotic arm, the angle detection module is mounted on the support rod, the telescopic rod is mounted at the front end of the angle detection module, and the contact module is mounted at the front end of the telescopic rod.

[0009] Optionally, the angle detection module includes a fixing plate and an angle detection element. The fixing plate is mounted on the support rod, and the angle detection element is mounted on the fixing plate and arranged towards the contact module.

[0010] Optionally, the telescopic rod is installed on the side of the fixed plate away from the support rod, and the axis of the telescopic rod is perpendicular to the front end face of the fixed plate.

[0011] Optionally, the contact module includes a sleeve, a handle, and a stylus. The sleeve is installed at the front end of the telescopic rod, the stylus is installed at the front end of the handle, and the handle is inserted into the cavity of the sleeve.

[0012] Optionally, a tightening screw is installed on the sleeve wall, and the inner end of the tightening screw abuts against the contact handle.

[0013] Optionally, the stylus is inserted into the handle, and a pressure sensor is installed between the inner end of the stylus and the handle.

[0014] Optionally, the rotatable telescopic arm includes an outer rod and an inner rod, one end of the inner rod being loosely fitted into the inner cavity of the outer rod, the inner rod being able to extend and retract axially relative to the outer rod, and being able to rotate axially relative to the outer rod.

[0015] Optionally, the included angle adjustment mechanism further includes an angle encoder and a servo motor. The angle encoder is used to detect the rotation angle of the rotating joints of two adjacent rotatable telescopic arms, and the servo motor is used to drive the rotating joints to rotate.

[0016] This invention also provides a testing method for an in-vehicle touchscreen testing device, comprising: The movable seat is installed on an electric sliding rail on the front passenger seat of the vehicle; An angle detection element at the end of a robotic arm detects the angle of an in-vehicle touchscreen. Based on the detected angle information, the actions of the rotary disk, the rotatable telescopic arm, and the angle adjustment mechanism are controlled, including: the rotary disk on the moving base drives the entire robotic arm to rotate horizontally, and the rotatable telescopic arm and the angle adjustment mechanism adjust the position and posture of the end of the robotic arm in three-dimensional space; so that the telescopic rod installed at the end of the robotic arm is perpendicular to the surface of the vehicle touch screen. The telescopic rod extends and retracts axially, causing the stylus installed at the front end of the telescopic rod to contact the designated test position on the vehicle's touch screen; A pressure sensor detects the contact pressure between the stylus and the vehicle's touchscreen. Based on the relationship between the contact pressure and the preset pressure threshold, the position of the robotic arm or the extension of the telescopic rod is adjusted to control the contact pressure within the preset pressure threshold range.

[0017] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages: 1. The testing device of this invention directly mounts the moving seat of the moving mechanism on the slide rail of the passenger seat in a vehicle, eliminating the need for additional vehicle modifications. This allows for in-situ testing of vehicle-mounted touchscreens, solving the technical problem of existing general-purpose testing equipment being unsuitable for in-vehicle environments. The rotating disk on the moving seat drives the entire robotic arm to rotate horizontally, facilitating adjustment of the robotic arm's orientation to align with the vehicle-mounted touchscreen. The rotatable telescopic arm and angle adjustment mechanism of the robotic arm work together to achieve position and posture adjustment of the robotic arm in three-dimensional space. The angle detection module of the touchpoint mechanism can detect the angle of the vehicle-mounted touchscreen in real time. Based on the detected screen angle information, it drives the rotating disk to rotate and the robotic arm to perform three-dimensional adjustment movements, adjusting the touchpoint mechanism to a suitable angle so that the touchpoint module remains perpendicular to the screen surface. This solves the technical problem of existing equipment being unable to automatically adjust the test touchpoint angle based on the screen angle. This device is suitable for automated functional testing during the R&D and production stages of various vehicle-mounted touchscreens, such as automotive central control screens. It can complete in-situ testing without disassembling the screen, making the test results more consistent with actual usage scenarios.

[0018] 2. Easy installation: The movable seat of this invention can be quickly and securely connected to the electric sliding rail after the passenger seat has been removed from the vehicle, without the need for additional vehicle modifications. It is suitable for various vehicle models and facilitates automated testing of in-vehicle touch screens in the original vehicle location, making the test results more consistent with actual usage scenarios.

[0019] 3. Automatic Angle Adjustment: The screen angle is detected in real time by the angle detection module, and the angle of the robotic arm is adjusted accordingly. Combined with the flexible movement of the multi-joint components of the robotic arm, the stylus can be precisely kept parallel to the vehicle touch screen at different angles, which improves the accuracy and reliability of the test.

[0020] 4. Precise pressure control: The pressure sensor in the contact mechanism can detect the pressure between the contact and the screen in real time. The control system adjusts according to the preset pressure range to ensure that the pressure is consistent for each touch operation, avoiding the impact of uneven pressure on the test results, and further improving the accuracy and stability of the test.

[0021] Advantages of additional aspects of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In addition, the dimensions or spacing between the components are exaggerated to show the position of each component, and the schematic diagrams are for illustrative purposes only.

[0023] Figure 1 This is a schematic diagram of the overall testing device provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of a sticker on the screen provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the moving mechanism provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the bottom side of the movable seat provided in an embodiment of the present invention; In the diagram: 1. Moving mechanism; 11. Moving seat; 12. Rotary disk; 13. Electric slide rail; 2. Robotic arm; 21. Rotatable telescopic arm; 211. Inner rod; 212. Outer rod; 22. Angle adjustment mechanism; 3. Contact mechanism; 31. Support rod; 32. Fixing plate; 33. Telescopic rod; 34. Handle; 35. Stylus; 36. Sleeve; 37. Pressure sensor; 38. Angle detection element; 4. Screen; 41. Four corner positioning point stickers; 42. Four midpoint point stickers; Detailed Implementation It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0024] Example 1 In-vehicle touchscreens are a crucial interface for human-machine interaction in the development of automotive intelligence. Their touch sensitivity, functional response accuracy, and operational stability directly impact the user experience. Therefore, comprehensive functional testing is essential during the research and development and production stages of in-vehicle touchscreens to ensure product quality before shipment. Touchscreen testing typically involves simulating human hand touch operations, performing clicks and swipes on different areas of the screen to detect its responsiveness and functional implementation. Related automated testing equipment, using mechanical actuators and control modules, completes this testing process and has become a common tool in touchscreen production and testing.

[0025] Currently, testing of automotive touchscreens primarily utilizes general-purpose automated testing equipment. This equipment typically includes a robotic arm, touch-sensitive actuators, and a control module. The robotic arm moves the touch-sensitive actuators within a space, while the control module contains pre-stored test programs that control the robotic arm to move along a preset path, thereby enabling the touch-sensitive actuators to perform specified touch operations on the screen. In actual testing, this type of general-purpose testing equipment is mostly used in laboratory environments. During testing, the automotive touchscreen is placed on a fixed test platform in the laboratory, and the testing equipment performs various functional tests on it.

[0026] In practical applications, significant technical shortcomings have been identified in existing general-purpose testing equipment. First, existing equipment cannot test in-vehicle touchscreens in their original location. The actual installation state of a touchscreen in a vehicle differs from its placement on a test platform. Factors such as the screen's installation angle and fixing method all affect its touch performance. Testing outside the original vehicle environment leads to test results that do not accurately reflect the screen's actual operating state, making it difficult to truly reflect its performance in the vehicle. Second, the existing equipment's robotic arm angle adjustment methods have limitations. The installation angles of in-vehicle touchscreens vary across different vehicle models, and the existing equipment's robotic arm angles are mostly preset fixed parameters. When testing screens at different angles, the touch actuators are prone to not being perpendicular to the screen surface, affecting the uniformity of touch operation pressure and reducing the accuracy and reliability of the test data.

[0027] like Figure 1 As shown, this embodiment proposes an in-vehicle touchscreen testing device, including a moving mechanism 1, a robotic arm 2, and a touch mechanism 3; as Figure 3 , Figure 4 As shown, the moving mechanism 1 includes a moving base 11 and a rotating disk 12. The moving base 11 is mounted on the slide rail of the passenger seat, and the rotating disk 12 is rotatably mounted on the moving base 11. The robotic arm 2 is mounted on the rotating disk 12 and includes several rotatable telescopic arms 21 and an angle adjustment mechanism 22. The several rotatable telescopic arms 21 are connected in sequence through the angle adjustment mechanism 22. The contact mechanism 3 is mounted on the robotic arm 2 and includes an angle detection module and a contact module. The angle detection module is used to detect the angle of the screen 4, and the contact module is used to touch the screen 4.

[0028] The movable seat 11 in the moving mechanism 1 can be directly installed on the slide rail of the passenger seat in the vehicle, making direct use of the vehicle's existing standardized installation structure. This solves the problem of the difficulty in installing general testing equipment securely and conveniently inside the vehicle, allowing for rapid deployment without any additional vehicle modifications. The rotating disk 12 on the movable seat 11 provides the robotic arm 2 with a horizontal degree of rotation.

[0029] The driver's seat uses an electric slide rail 13. The electric slide rail 13 includes two parallel slide rails connected to the vehicle floor, two sliding members that movably engage with the slide rails, a dual-axis motor located between the two slide rails, and two output shafts connected to both ends of the dual-axis motor. The top of each sliding member is provided with several fixing screws for fixing the movable seat 11. Each of the two slide rails has a fixing screw with its axis parallel to the slide rail axis. The system also includes a sliding mechanism that allows the sliding members to slide on the fixing screws, and this sliding mechanism is driven by the output shafts. By designing the electric slide rail 13 system and using the dual-axis motor to drive the sliding members to slide on the fixing screws, the forward and backward movement of the movable seat 11 is achieved.

[0030] The robotic arm 2 itself is composed of multiple rotatable telescopic arms 21 connected in series through an angle adjustment mechanism 22, forming a multi-joint mechanical structure, which enables its end effector to be flexibly adjusted in position and posture in three-dimensional space.

[0031] The contact mechanism 3 is integrated into the end of the robotic arm 2. Its angle detection module is used to sense the spatial angle of the in-vehicle touch screen 4 in real time, providing information input for the attitude adjustment of the entire system. The contact module serves as the final execution unit.

[0032] By utilizing the basic positioning and rotation provided by the mobile mechanism 1, the multi-degree-of-freedom fine adjustment provided by the robotic arm 2, and the angle sensing and execution functions provided by the contact mechanism 3, the three components work together to enable the device to automatically adjust the contact module to a position perpendicular to the vehicle screen 4 at different tilt angles, thereby solving the problem of inaccurate testing caused by non-perpendicular contact.

[0033] The contact mechanism 3 also includes a support rod 31 and a telescopic rod 33. The support rod 31 is mounted on the robotic arm 2, the angle detection module is mounted on the support rod 31, the telescopic rod 33 is mounted at the front end of the angle detection module, and the contact module is mounted at the front end of the telescopic rod 33.

[0034] The support rod 31, serving as the connecting component at the end of the robotic arm 2, provides a stable mounting base. The telescopic rod 33 is installed at the front end of the angle detection module and ultimately connects to the contact module. As an independent linear motion unit, the telescopic rod 33 allows the contact module to perform linear telescopic motion along a defined axis when it finally contacts the screen 4. This ensures the purity and controllability of the touch action direction, avoids trajectory deviations caused by complex composite movements, and provides structural assurance for achieving precise clicks in the vertical direction.

[0035] The angle detection module includes a fixing plate 32 and an angle detection element 38. The fixing plate 32 is mounted on the support rod 31, and the angle detection element 38 is mounted on the fixing plate 32 and arranged towards the contact module side.

[0036] An angle detection element 38, such as an infrared sensor or a distance sensor, is mounted on a mounting plate 32 and positioned facing the contact module, i.e., towards the screen 4 to be tested. This arrangement allows the angle detection element 38 to directly detect the contact points on the surface of the screen 4 (e.g., the contact module). Figure 2 As shown, the relative relationship between the four corner positioning point stickers 41 and the four midpoint positioning point stickers 42 is used to obtain the angle data of the screen 4. The fixing plate 32 provides a stable mounting platform for the angle detection element 38, ensuring the stability of the detection reference and reducing the detection error caused by the vibration or deformation of the robotic arm 2 itself.

[0037] The telescopic rod 33 is installed on the side of the fixed plate 32 away from the support rod 31, and the axis of the telescopic rod 33 is perpendicular to the front end face of the fixed plate 32.

[0038] By setting the axis of the telescopic rod 33 to be perpendicular to the front end face, and adjusting the fixing plate 32 to be parallel to the surface of the screen 4 through the angle detection element 38, the axis of the telescopic rod 33 will automatically be perpendicular to the surface of the screen 4, laying a direct and reliable mechanical foundation for the final realization of vertical clicking of the stylus 35.

[0039] The contact module includes a sleeve 36, a handle 34, and a stylus 35. The sleeve 36 is installed at the front end of the telescopic rod 33, the stylus 35 is installed at the front end of the handle 34, and the handle 34 is inserted into the cavity of the sleeve 36.

[0040] Sleeve 36 is fixed to the front end of telescopic rod 33, serving as the main support. Touch handle 34 is inserted into the cavity of sleeve 36, forming a pluggable or adjustable connection. Stylus 35 is mounted on the front end of touch handle 34. As a wear-prone component, stylus 35 can be replaced separately, reducing maintenance costs.

[0041] A tightening screw is installed on the wall of the sleeve 36, and the inner end of the tightening screw abuts against the contact handle 34.

[0042] During the debugging phase or after replacing the contact handle 34 with a different specification, the contact handle 34 can be firmly fixed in the sleeve 36 by tightening the tightening screw, preventing the contact handle 34 from axially moving or rotating circumferentially during the test, thereby ensuring the spatial position accuracy and posture stability of the working end of the stylus 35 and ensuring the consistency of the test action.

[0043] The stylus 35 is inserted into the handle 34, and a pressure sensor 37 is installed between the inner end of the stylus 35 and the handle 34.

[0044] The contact force experienced by the stylus 35 is directly transmitted to the pressure sensor 37, enabling real-time and accurate measurement of the contact pressure between the stylus tip 35 and the screen 4. The control system can compare this real-time pressure value with a preset pressure threshold range and dynamically adjust the position of the robotic arm 2 or the extension / retraction of the telescopic rod 33 to control the contact pressure in real time, keeping it within the ideal range.

[0045] The rotatable telescopic arm 21 is existing technology and typically includes an outer rod 212 and an inner rod 211. One end of the inner rod 211 is loosely fitted into the inner cavity of the outer rod 212. The inner rod 211 can extend and retract axially relative to the outer rod 212 and can rotate axially relative to the outer rod 212.

[0046] The rotatable telescopic arm 21 is a composite kinematic linkage system consisting of prismatic joints and rotary joints. Therefore, a single rotatable telescopic arm 21 integrates two degrees of freedom of motion: telescopic and rotational. This compact structural design enables the robotic arm 2 to achieve the necessary extension, retraction, and bending movements under limited size and complex spatial constraints.

[0047] The included angle adjustment mechanism 22 also includes an angle encoder and a servo motor. The angle encoder is used to detect the rotation angle of the rotating joints of two adjacent rotatable telescopic arms 21, and the servo motor is used to drive the rotating joints to rotate.

[0048] Servo motors, rotary joints, and angle encoders constitute a typical servo control system, which enables the angle of each joint to be precisely controlled and recorded, thereby allowing the spatial pose of the entire robotic arm 2 end to be controlled with high precision through the calculation of the angles of each joint.

[0049] Example 2 This embodiment provides a testing method for an in-vehicle touchscreen testing device, including: The movable seat 11 is installed on the electric sliding rail 13 of the passenger seat in the vehicle; The angle detection element 38 at the end of the robotic arm 2 detects the angle of the vehicle-mounted touch screen 4; Based on the detected angle information, the rotary disk 12, the rotatable telescopic arm 21 and the angle adjustment mechanism 22 are controlled to move, including: the rotary disk 12 on the moving seat 11 drives the robotic arm 2 to rotate horizontally as a whole, and the rotatable telescopic arm 21 and the angle adjustment mechanism 22 adjust the position and posture of the end of the robotic arm 2 in three-dimensional space; so that the telescopic rod 33 installed at the end of the robotic arm 2 is perpendicular to the surface of the vehicle touch screen 4. The telescopic rod 33 extends and retracts along the axial direction, causing the stylus 35 installed at the front end of the telescopic rod 33 to contact the designated test position on the vehicle touch screen 4; Pressure sensor 37 detects the contact pressure between stylus 35 and vehicle touch screen 4; Based on the relationship between the contact pressure and the preset pressure threshold, adjust the position of the robotic arm 2 or the extension of the telescopic rod 33 to control the contact pressure within the preset pressure threshold range.

[0050] First, the passenger seat in the vehicle is removed, and the movable seat 11 is installed on the electric sliding rail 13 of the passenger seat, completing the quick and non-destructive fixation of the device in the vehicle and solving the installation compatibility problem. Then, the angle detection element 38 at the end of the robotic arm 2 detects the angle of the screen 4 to obtain environmental information. Next, based on the detected angle information, the rotating disk 12, the rotatable telescopic arm 21, and the angle adjustment mechanism 22 are coordinated to perform actions. This coordinated action process includes the rotating disk 12 driving the robotic arm 2 to rotate horizontally for coarse adjustment, and the rotatable telescopic arm 21 and the angle adjustment mechanism 22 of each joint performing fine adjustments with multiple degrees of freedom to adjust the spatial position and posture of the end of the robotic arm 2 until the axis of the telescopic rod 33 installed at the end is perpendicular to the surface of the vehicle touch screen 4. After ensuring the vertical posture, the telescopic rod 33 is controlled to extend and retract linearly, driving the stylus 35 to vertically contact the designated position of the screen 4. At the same time, the pressure sensor 37 is used to monitor the contact pressure and form a closed-loop control. By adjusting the robotic arm 2 or the telescopic rod 33, the pressure is maintained within a preset threshold, thereby achieving consistent control of the touch force.

[0051] Specific procedures: After fixing the moving mechanism 1 in S100, turn on the overall power supply of the robotic arm 2, adjust the robotic arm 2 to the appropriate position, and start the initialization check of the robotic arm 2.

[0052] After the S200 inspection is completed, the program is called to activate the angle detection element 38 for real-time detection of the angle of the vehicle touch screen 4. The electric rotary disk 12 can rotate as a whole, and the angle adjustment mechanism 22 adjusts the angle between the telescopic arms. The telescopic arms rotate and extend. The angle sensor transmits the scanned screen 4 angle information to the control system. The drive motor controls the robotic arm 2 to rotate by the corresponding angle according to the received angle information, thereby adjusting the position to adapt to the angle of the screen 4.

[0053] S300 initializes the stylus 35 to point to the center of the screen 4, and the telescopic rod 33 is perpendicular to the screen 4. The S400 drives the stylus 35 to click on the screen 4, and calibrates the appropriate click force according to the pressure sensor 37, and saves it; Based on the selected point, the S500 first adjusts to a position parallel and directly above the point, then adjusts the stylus 35 to be perpendicular to the screen 4, and drives the stylus 35 to click on the screen 4 to complete the touch screen action.

[0054] While the specific embodiments of the present invention have been described above, they are not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. A vehicle-mounted touchscreen testing device, characterized in that, include: Motion mechanisms, robotic arms, and contact mechanisms; The moving mechanism includes a movable seat and a rotating disk. The movable seat is mounted on the slide rail of the passenger seat, and the rotating disk is rotatably mounted on the movable seat. The robotic arm is mounted on the rotary table and includes several rotatable telescopic arms and an angle adjustment mechanism. The several rotatable telescopic arms are connected in sequence through the angle adjustment mechanism. The contact mechanism is mounted on the robotic arm and includes an angle detection module and a contact module. The angle detection module is used to detect the screen angle, and the contact module is used to touch the screen.

2. The vehicle-mounted touchscreen testing device as described in claim 1, characterized in that, The contact mechanism also includes a support rod and a telescopic rod. The support rod is mounted on the robotic arm, the angle detection module is mounted on the support rod, the telescopic rod is mounted at the front end of the angle detection module, and the contact module is mounted at the front end of the telescopic rod.

3. The vehicle-mounted touchscreen testing device as described in claim 2, characterized in that, The angle detection module includes a fixing plate and an angle detection element. The fixing plate is mounted on the support rod, and the angle detection element is mounted on the fixing plate and arranged facing the contact module.

4. The vehicle-mounted touchscreen testing device as described in claim 3, characterized in that, The telescopic rod is installed on the side of the fixed plate away from the support rod, and the axis of the telescopic rod is perpendicular to the front end face of the fixed plate.

5. The vehicle-mounted touchscreen testing device as described in claim 2, characterized in that, The contact module includes a sleeve, a handle, and a stylus. The sleeve is installed at the front end of the telescopic rod, the stylus is installed at the front end of the handle, and the handle is inserted into the cavity of the sleeve.

6. The vehicle-mounted touchscreen testing device as described in claim 5, characterized in that, A tightening screw is installed on the wall of the sleeve, and the inner end of the tightening screw abuts against the contact handle.

7. The vehicle-mounted touchscreen testing device as described in claim 5, characterized in that, The stylus is inserted into the handle, and a pressure sensor is installed between the inner end of the stylus and the handle.

8. The vehicle-mounted touchscreen testing device as described in claim 1, characterized in that, The rotatable telescopic arm includes an outer rod and an inner rod. One end of the inner rod is loosely fitted into the inner cavity of the outer rod. The inner rod can extend and retract axially relative to the outer rod and can rotate axially relative to the outer rod.

9. The vehicle-mounted touchscreen testing device as described in claim 1, characterized in that, The included angle adjustment mechanism also includes an angle encoder and a servo motor. The angle encoder is used to detect the rotation angle of the rotating joints of two adjacent rotatable telescopic arms, and the servo motor is used to drive the rotating joints to rotate.

10. A testing method for an in-vehicle touchscreen testing device as described in any one of claims 1-9, characterized in that, include: The movable seat is installed on an electric sliding rail on the front passenger seat of the vehicle; An angle detection element at the end of a robotic arm detects the angle of an in-vehicle touchscreen. Based on the detected angle information, the actions of the rotary disk, the rotatable telescopic arm, and the angle adjustment mechanism are controlled, including: the rotary disk on the moving base drives the entire robotic arm to rotate horizontally, and the rotatable telescopic arm and the angle adjustment mechanism adjust the position and posture of the end of the robotic arm in three-dimensional space; so that the telescopic rod installed at the end of the robotic arm is perpendicular to the surface of the vehicle touch screen. The telescopic rod extends and retracts axially, causing the stylus installed at the front end of the telescopic rod to contact the designated test position on the vehicle's touch screen; A pressure sensor detects the contact pressure between the stylus and the vehicle's touchscreen. Based on the relationship between the contact pressure and the preset pressure threshold, the position of the robotic arm or the extension of the telescopic rod is adjusted to control the contact pressure within the preset pressure threshold range.

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