Device and method for testing workpieces for automobiles
By using automated testing equipment and QR code recognition technology, the problems of manual operation and signal interference in automotive workpiece testing have been solved, achieving efficient automated testing and correct remote control matching, thereby improving production efficiency.
Patent Information
- Application Number
- CN202511618830.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-06
- Publication Date
- 2026-02-06
AI Technical Summary
In the current automotive workpiece testing process, manual operation is relied upon and is susceptible to interference from radio signals, leading to mislearning or misjudgment, which affects testing efficiency and production cycle.
An automated testing device is adopted, including a positioning device, position detection, pneumatic marking, QR code scanning and recognition, movable elastic probe and MCU central processing unit. The device identifies workpiece information through QR code recognition, learns remote control ID matching, and uses CAN bus diagnostic function to verify the consistency of remote control ID to avoid mislearning.
It improves the level of test automation, reduces mislearning errors caused by signal crosstalk, and enhances test efficiency and the efficiency of correct matching learning.
Smart Images
Figure CN121476766A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to a device and method for testing automobile workpieces. BACKGROUND
[0002] In the existing production process, for control workpieces such as vehicle windows and rearview mirrors, the workpieces need to enter a factory mode in the final stage to test performance and complete remote control learning. At present, the test process relies on manual operation to verify functions one by one, and the remote control learning link is easily interfered by adjacent workstations with the same frequency radio signal, resulting in false learning or misjudgment. Since the wireless transmission distance of the automobile remote controller often exceeds 30 meters, in the dense workshop environment, multiple devices simultaneously learning easily interfere with each other, causing workpiece learning errors. At this time, the workpieces need to be reassembled and the learning process needs to be repeated, which seriously affects the test efficiency and production rhythm.
[0003] Therefore, it is urgent to develop a special test device and method with high efficiency and anti-interference to improve the test automation degree, avoid signal cross interference, and solve the prominent problems of low efficiency and high misjudgment rate in the prior art. SUMMARY
[0004] Therefore, the purpose of the present application is to provide a device and method for testing automobile workpieces, which can improve the test automation degree, avoid signal cross interference, solve the prominent problems of low efficiency and high misjudgment rate in the prior art, and overcome the shortcomings of the prior art.
[0005] The purpose of the present application is achieved by the following technical solutions: The application discloses a device and method for testing automobile workpieces, which comprises a test bench, a base for placing workpieces is arranged on the test bench, a positioning device and a position detection device for the workpieces are arranged on the base, a pneumatic dotting device for marking the workpieces is arranged on one side of the base, a two-dimensional code scanning and identifying device is arranged above the base, a movable elastic probe connected with the workpieces is arranged on the test bench, the movable elastic probe is connected with an MCU central processor through a CAN bus, an electronic switch module, an IO acquisition and driving module, a power conversion module, and a wireless transmitting module are arranged on the MCU central processor, and the wireless transmitting module is connected with a remote controller; the two-dimensional code scanning and identifying device and the pneumatic dotting device are connected with the MCU central processor, and a display screen and an input device connected with the MCU central processor are arranged on the base.
[0006] The two-dimensional code scanning and identifying device comprises a camera and a computer connected with the camera, and the computer is connected with the MCU central processor through a USB communication interface.
[0007] The positioning device comprises positioning columns arranged on the left and right sides of the base, and clamping holes arranged on the workpiece and clamped and positioned with the positioning columns.
[0008] The structure for connecting the movable elastic probe with the workpiece comprises a hydraulic cylinder arranged on the base, and the movable elastic probe is located at the front end of the hydraulic cylinder push rod.
[0009] The method for testing the automobile workpiece comprises the following steps: Step 1, place the workpiece on the test workbench, position the relative position by the positioning device, detect whether it is in place by the position detection device, and start testing after it is in place. Step 2, connect the movable elastic probe with the workpiece, read the workpiece shell two-dimensional code information by the two-dimensional code scanning and identifying device and display it on the display screen, judge whether there is an open circuit or short circuit and other abnormalities according to the two-dimensional code related information, if there is no abnormality, provide normal current for the workpiece function sequential test process; Step 3, enter the remote control matching learning of the workpiece, send the specified remote control ID information by the MCU central processor for the workpiece learning, then read whether the learned remote control ID is correct by the CAN bus diagnosis function of the workpiece, if it is not correct, control to enter the learning process again until the learning detection is passed; Step 4, after all the tests are qualified, use the pneumatic dotting device to mark a test qualified mark on the workpiece shell, finally retreat upward, and complete the test.
[0010] In step 3, the CAN bus diagnosis function of the workpiece itself is used to add the reading diagnosis DID of the remote control ID in the MCU central processor, the MCU central processor sends the specified wireless remote control ID to the workpiece to be tested, then reads whether the learned ID of the workpiece is the same as the sent ID by the diagnosis function, if they are different, it is considered that the workpiece has not learned or has learned other remote controls, immediately start the learning mode again, and repeat the above process.
[0011] Compared with the prior art, the beneficial effects of the present application are: The device can connect the workpiece through the movable elastic probe, then can test each function of the test workpiece, and can automatically identify the product through the two-dimensional code scanning and identifying device, specifically, reads the two-dimensional code information of the workpiece shell through the top camera, then calls the test program corresponding to the workpiece type according to the two-dimensional code related information to test; the workpiece is remotely controlled and matched through the wireless transmission module, the reading diagnosis DID of the remote control ID is added in the MCU central processor, the MCU central processor sends the specified wireless remote control ID to the workpiece to be tested, then reads whether the ID learned by the workpiece is the same as the sent ID through the diagnosis function, so that whether the workpiece learns the correct remote control is verified, if the workpiece cannot learn the corresponding remote control, the learning process is entered again through the electronic switch module and the like control, until the learning detection is passed, so that the problem that multiple devices are easy to interfere with each other and cause the workpiece to learn errors can be solved, and the efficiency of correct matching learning is improved.
[0012] Other advantages, objects, and features of the present application will be understood by those skilled in the art from the following specification in conjunction with the accompanying drawings. The present application's objects and other advantages will be realized and attained by means of the instrumentalities and combinations pointed out in the following specification. BRIEF DESCRIPTION OF DRAWINGS
[0013] In order to make the objects, technical solutions and advantages of the present application clearer, the following will further describe the present application in detail with reference to the accompanying drawings, in which: Figure 1 The figure is a schematic diagram of the three-dimensional connection structure of the present application.
[0014] Among them, the test bench 1; base 2; positioning device 3; position detection device 4; pneumatic dotting device 5; movable elastic probe 6; display screen 7; input device 8; camera 9; hydraulic cylinder 10. DETAILED DESCRIPTION
[0015] The preferred embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the preferred embodiments are only for illustrating the present application, and are not intended to limit the protection scope of the present application.
[0016] As Figure 1As shown, this invention discloses an apparatus and method for testing automotive workpieces. It includes a test bench 1, a base 2 for placing the workpiece on the test bench 1, a workpiece positioning device 3 and a position detection device 4 on the base 2, a pneumatic marking device 5 for marking the workpiece on one side of the base 2, a QR code scanning and recognition device above the base 2, and a movable elastic probe 6 for connecting to the workpiece on the test bench 1. The movable elastic probe 6 is connected to an MCU central processing unit (CPU) via a CAN bus. The CPU includes an electronic switch module, an I / O acquisition and drive module, a power conversion module, and a wireless transmission module, which is connected to a remote control. The QR code scanning and recognition device and the pneumatic marking device 5 are both connected to the CPU. The base 2 has a display screen 7 and an input device 8 connected to the CPU. This device can connect via the movable elastic probe 6... The device receives the workpiece and then tests its various functions. A QR code scanning and recognition device automatically identifies the product. Specifically, the top-mounted camera 9 reads the QR code information on the workpiece's outer shell, and then calls the corresponding workpiece type's test program based on the QR code information. The workpiece undergoes remote control matching and learning via a wireless transmission module. A diagnostic DID for reading the remote control ID is added to the MCU central processing unit. The MCU central processing unit sends the specified wireless remote control ID to the workpiece under test, and then uses a diagnostic function to check if the ID learned by the workpiece matches the sent ID, thus verifying whether the workpiece has learned the correct remote control. If the workpiece cannot learn the corresponding remote control, it re-enters the learning process through electronic switch modules, etc., until the learning test passes. This solves the problem of mutual interference caused by multiple devices learning simultaneously, leading to workpiece learning errors, and improves the efficiency of correct matching and learning.
[0017] The QR code scanning and recognition device includes a camera 9 and a computer connected to the camera 9. The computer is connected to the MCU central processing unit via a USB communication interface. In this way, the static video images captured by the USB camera are sent to the computer host, and the QR code in the image can be decoded by the program of the testing device.
[0018] Furthermore, the positioning device 3 includes positioning posts on the left and right sides of the base 2, and locking holes on the workpiece for engaging with the positioning posts. Specifically, connecting arms corresponding to the positioning posts are provided on the left and right sides of the workpiece, and locking holes that cooperate with the positioning posts are provided on the connecting arms.
[0019] Furthermore, the structure for connecting the movable elastic probe 6 to the workpiece includes a hydraulic cylinder 10 mounted on the base 2. The movable elastic probe 6 is located at the front end of the push rod of the hydraulic cylinder 10. Thus, the extension and retraction of the movable elastic probe 6 can be controlled by the hydraulic cylinder 10, thereby achieving connection or separation with the workpiece interface.
[0020] The method for testing automotive workpieces is characterized by the following steps: Step 1: Place the workpiece on the test workbench and position it relative to the location using the positioning device 3. Then, use the position detection device 4 to check if the workpiece is in place. Once in place, start the test. Step 2: Connect the movable elastic probe 6 to the workpiece, read the QR code information on the workpiece shell through the QR code scanning and identification device and display it on the display screen 7. Determine whether there are any abnormalities such as open circuit or short circuit based on the relevant information of the QR code. If there are no abnormalities, provide normal current to carry out the sequential test process of workpiece function. Step 3: The workpiece is put into remote control matching learning. The specified remote control ID information is sent to the workpiece for learning through the MCU central processing unit. Then, the workpiece's CAN bus diagnostic function is used to read whether the learned remote control ID is correct. If it is incorrect, the control is to re-enter the learning process until the learning test is passed. This step utilizes the CAN bus diagnostic function built into the workpiece itself to add a remote control ID reading diagnostic DID to the MCU central processing unit. The MCU central processing unit sends the specified wireless remote control ID to the workpiece under test, and then reads whether the ID learned by the workpiece is the same as the sent ID through the diagnostic function. This is displayed on the display screen 7 for comparison. If they are different, it is considered that the remote control has not been learned or has been mistakenly learned from another remote control. The learning mode is immediately restarted and the above process is repeated.
[0021] Step 4: After all tests are passed, use the pneumatic marking device 5 to mark a test pass mark on the workpiece shell. Finally, step 3 moves upwards to complete the test.
[0022] The equipment is already in production. This device can call the corresponding test program for the workpiece type through QR code information, improving testing efficiency. At the same time, in the remote control learning process, although it is impossible to avoid the problem of crosstalk from adjacent workstations' radio signals of the same frequency, which may lead to mislearning or misjudgment, the remote control ID is added to the MCU central processing unit to read the diagnostic DID. The MCU central processing unit sends the specified wireless remote control ID to the workpiece under test, and then reads the ID learned by the workpiece through the diagnostic function to see if it is the same as the sent ID, thereby verifying whether the workpiece has learned the correct remote control. If the workpiece cannot learn the corresponding remote control, it re-enters the learning process through electronic switch modules and other controls until the learning test is passed. This method of relearning by comparison improves the efficiency of remote control matching and learning.
[0023] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of the present invention in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments without departing from the technical solution of the present invention and based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.
Claims
1. A device for testing automotive workpieces, characterized in that, It includes a test bench (1), a base (2) for placing workpieces on the test bench (1), a workpiece positioning device (3) and a position detection device (4) on the base (2), a pneumatic marking device (5) for marking workpieces on one side of the base (2), a QR code scanning and recognition device above the base (2), a movable elastic probe (6) for connecting to the workpiece on the test bench (1), the movable elastic probe (6) is connected to the MCU central processing unit via a CAN bus, the MCU central processing unit is equipped with an electronic switch module, an IO acquisition and drive module, a power conversion module and a wireless transmission module, the wireless transmission module is connected to a remote controller; the QR code scanning and recognition device and the pneumatic marking device (5) are both connected to the MCU central processing unit, and a display screen (7) and an input device (8) connected to the MCU central processing unit are provided on the base (2).
2. The apparatus for testing automotive workpieces according to claim 1, characterized in that, The QR code scanning and recognition device includes a camera (9) and a computer connected to the camera (9). The computer is connected to the MCU central processing unit via a USB communication interface.
3. The apparatus for testing automotive workpieces according to claim 1, characterized in that, The positioning device (3) includes positioning posts on the left and right sides of the base (2), and a locking hole on the workpiece that engages with the positioning posts for positioning.
4. The apparatus for testing automotive workpieces according to claim 1, characterized in that, The structure for connecting the movable elastic probe (6) to the workpiece includes a hydraulic cylinder (10) provided on the base (2), wherein the movable elastic probe (6) is located at the front end of the push rod of the hydraulic cylinder (10).
5. A method for testing automotive workpieces, characterized in that, The method includes the following steps: Step 1: Place the workpiece on the test workbench and position it relative to the location using the positioning device (3). Detect whether it is in position using the position detection device (4). Once in position, start the test. Step 2: Connect the movable elastic probe (6) to the workpiece, read the QR code information of the workpiece shell through the QR code scanning and identification device and display it on the display screen (7). Determine whether there are any abnormalities such as open circuit or short circuit based on the relevant information of the QR code. If there are no abnormalities, provide normal current to carry out the sequential test process of the workpiece function. Step 3: The workpiece is put into remote control matching learning. The specified remote control ID information is sent to the workpiece for learning through the MCU central processing unit. Then, the workpiece's CAN bus diagnostic function is used to read whether the learned remote control ID is correct. If it is incorrect, the control is to re-enter the learning process until the learning test is passed. Step 4: After all tests are passed, use the pneumatic marking device (5) to mark a test pass mark on the workpiece shell. Finally, step 3 moves upwards to complete the test.
6. The method for testing automotive workpieces according to claim 5, characterized in that, In step 3 above, the CAN bus diagnostic function built into the workpiece is used to add the remote control ID reading diagnostic DID to the MCU central processing unit. The MCU central processing unit sends the specified wireless remote control ID to the workpiece under test, and then reads whether the ID learned by the workpiece is the same as the sent ID through the diagnostic function. If they are different, it is considered that the remote control has not been learned or has been mistakenly learned from another remote control. The learning mode is immediately restarted and the above process is repeated.