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Automotive instrument vision detector

Keyword:
Automotive instrument vision detector
Car instrument detection
Automatic Optical In
Hotline:4008198001
Automotive instrument vision detector
Details

 

The automotive instrumentation inspection and adjustment system is a case of the successful application of Beijing Galaxy's GOI system in the "electronic combined automotive instrumentation" industry.

 

1. Hardware composition

1. GOI computer and camera part;

2. The driving circuit part of the automobile instrument panel;

3. Car dashboard loading tooling (dual station, one for loading the card, the other for testing, to improve efficiency, can be customized according to customer needs)

 

 

2. Software introduction

1. The programming interface of the software is shown in the figure below. The left side is the list of detection steps, and the main screen on the right side is the graphic editing screen:

 

 

 

2. In the software program, each "window" has independent visual algorithm function and programmable communication function. In the process of "detection" and "debugging", the software executes the tasks of all the "windows" in sequence. Each time the task of completing a window is executed, the software will not only give the detection result of the window, but also send out external commands according to the set instructions. Control commands, switch the state of the instrument under test or keep the original state, and continue to test and adjust the image of the next window until all the windows to be tested are detected or debugged.

 

3. Flow chart of automatic adjustment of pointer position:

 

 

 

4. In the actual adjustment process, since there is a certain angle between the lens and the needle, the software system can automatically compensate for the deviation of the "viewing angle" at each point of the measurement. The measurement process can also measure the distance difference between the needle and the scale without using "angle measurement", and also need to compensate for the "viewing angle difference".

5. Instrument adjustment and detection speed:

The detection time required for each detection point is about 10mS ~ 100mS .

The visual measurement time of each calibration point is about 100mS , and it takes about 1.5S to 2S to complete a point. If a dial has 4 pointers, and each pointer adjusts 4 points on average, then a watch needs to be adjusted. The time is about 24S ~ 32S. The specific time is related to the response speed of the hands and the number of adjustment points of the hands.

6. Using a 5 million pixel camera to detect instruments with an area of ​​400 × 320mm, the detection accuracy can reach 0.16mm. If you need to improve the detection accuracy or expand the detection area, you can increase the number of cameras, and the system supports up to 4 cameras.

7. The test screen of the software is shown in the following figure, with graphic error and text error, as well as a global picture and a partial result picture. The test results are clear and clear, and the interface can be adjusted according to user needs:

 

 

8. For other features of the software, please refer to the features of " General Vision Software Platform GOI ".

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