The application of visual guidance systems for industrial robots includes the following aspects: automatic stacking and automatic unloading; conveyor belt tracking; component assembly; robot application and detection; robot loading and unloading; Robot guided dispensing, etc.
Through the industrial robot visual guidance system, the camera is installed on the arm of the robot and follows the movement of the robot at any time. The camera can locate all the products within the field of view through one shot, and through the data Transfer, guide the robot to grab and place it at the set position.
Machine vision system, on the production line, people will make such measurements and judgments due to fatigue, personal differences, etc., but errors will occur, but the machine will continue to work tirelessly and stably. . Generally speaking, machine vision systems include lighting systems, lenses, camera systems and image processing systems.
For each application, we need to consider the running speed of the system and the image processing speed, whether to use a color or black-and-white camera, whether to detect the size of the target or whether it has defects, how large the field of view needs to be, and the resolution How high it needs to be, how high the contrast needs to be, etc. From a functional point of view, a typical machine vision system can be divided into: image acquisition part, image processing part and motion control part.
Extended information
Working process of machine vision system
The main working process of a complete machine vision system is as follows:
1. Workpiece The positioning detector detects that the object has moved close to the center of the camera system's field of view and sends a trigger pulse to the image acquisition part.
2. The image acquisition part sends start pulses to the camera and lighting system respectively according to the preset program and delay.
3. The camera stops the current scan and restarts a new frame scan, or the camera is in a waiting state before the start pulse arrives, and starts a frame scan after the start pulse arrives.
4. Open the exposure mechanism before the camera starts scanning a new frame, and the exposure time can be set in advance.
5. Another start pulse turns on the light illumination. The turn-on time of the light should match the exposure time of the camera.
6. After the camera is exposed, the scanning and output of a frame of image officially begins.
7. The image acquisition part receives analog video signals and digitizes them through A/D, or directly receives the digital video data after digitization by the camera.
8. The image acquisition part stores digital images in the memory of the processor or computer.
9. The processor processes, analyzes, and identifies the image to obtain measurement results or logical control values.
10. The processing results control the movement of the assembly line, positioning, and correction of motion errors, etc.