Automotive Instrument Visual Inspection Device
Keywords:
Category:
Automotive industry
Product accessories:
Helpline:
Automotive Instrument Visual Inspection Device
The automotive instrument detection and calibration system is GOI by Beijing Xinghe. A successful case study of the system's application in the "electronic modular automotive instrument" industry.
1. Hardware Components
1 GOI Computer and camera section;
2 , the automotive dashboard driver circuit section;
3 Automotive dashboard fixture for card installation (dual-station design—one station for card loading, the other for testing, enhancing efficiency; customizable based on customer requirements)
II. Software Overview
1 The software's programming interface is shown in the figure below: on the left is a list of detection steps, and the main area on the right is the graphic editing canvas.
2 In the software program, each "window" features independent visual algorithm functionality as well as programmable communication capabilities. During the "inspection" and "debugging" processes, the software sequentially executes tasks for all "windows." After completing the task for one window, it not only provides the inspection results for that specific window but also issues external control commands—based on predefined instructions—to either switch the tested instrument’s state or maintain its current status, before moving on to test and adjust the next window’s image. This process continues until all windows awaiting inspection or debugging have been fully checked or debugged.
3 • Automatic Pointer Position Calibration Flowchart:
4 During the actual calibration process, since there is a certain angle between the lens and the watch hands, the software system automatically compensates for the "angle" deviation at each measurement point. Alternatively, the measurement can be performed without using "angle measurement"—instead, by determining the distance difference between the watch hands and the scale—but even in this case, "angle compensation" is still required.
5 • Instrument calibration and testing speed:
Each detection point requires approximately 10 milliseconds of testing time. ~100 ms 。
The visual measurement time for each calibration point is approximately 100 milliseconds. , tuning a single point takes about 1.5 seconds Approximately 2–4 seconds: If a watch face has 4 hands, and each hand requires an average adjustment of 4 positions, then the total time needed to adjust the watch would be roughly 24–32 seconds. The exact duration depends on factors such as how quickly the hands respond and the number of adjustment points for each hand.
6 , adopting a 500 A megapixel camera detects 400 An instrument with a 320mm² area can achieve a detection accuracy of 0.16mm. If higher detection accuracy or a larger detection area is required, you can increase the number of cameras—this system supports up to 4 cameras.
7 The software’s test screen is shown in the image below, featuring both graphical and text-based error messages. It includes both global views and detailed local result images, ensuring test results are clear and easy to understand. The interface can also be adjusted according to user requirements.
8 For other features of the software, please refer to “ General-Purpose Visual Software Platform GOI "Characteristics."
Previous page
Next page