CCD machine vision inspection system comprehensive analysis, 0 basic can also learn

First, the detected object is approached or moved to the center of the field of view of the industrial camera, and if so, the trigger pulse signal is sent to the image acquisition equipment; The image acquisition device sends the start pulse to the industrial camera and lighting device according to the program and delay preset by the designer, but some industrial cameras and lighting devices start directly when the system is turned on;

Industrial cameras stop the current scan and then restart a new frame scan; Sometimes industrial cameras need to be in a waiting state before the start pulse arrives, and frame scanning does not begin until after the start pulse arrives;

If the exposure strategy is used, the exposure control system should be opened before the industrial camera starts a new frame scan, and the exposure time, exposure speed, and exposure intensity should be set by the program or hardware according to your actual needs; If the exposure strategy is used, use another start pulse to turn on the lighting device, in particular, keep the start time should match the exposure time, exposure speed, exposure intensity of the industrial camera;

After the exposure of an industrial camera, the scanning and output of a frame of image officially begins; If the output of an industrial camera is an analog signal, the image acquisition device will perform A/D conversion on the signal received from the industrial camera to digitize it. If the output is a digital signal, the image will be saved to capture the digital signal; Otherwise, the image taken by the image capture device is saved.

The image acquisition device sends the image signal to the data buffer, and then it is processed and displayed by the processor or computer memory.

A processor or computer processes, analyzes, and recognizes images to obtain measurement results or logical control variables, and then processes them based on these results to control other devices (such as mechanical devices, etc.) to complete relevant actions and perform positioning. Correct movement errors and remove defects, such as correcting the positioning grasp of the robotic arm or sorting out defective products.

The advantages of CCD machine vision inspection in industrial product inspection

CCD machine vision inspection equipment is a non-contact measurement method, which can avoid the damage to the measured object. Suitable for high temperature, high pressure, fluid, environmental hazards and other difficult to access the measured object occasions, can replace manual operation, to ensure production efficiency and safety.

The dimensional measurement of CCD machine vision technology has good continuity and high precision, which greatly improves the real-time and accuracy of industrial online measurement, and also significantly improves the production efficiency and quality control.

CCD machine vision inspection equipment can greatly reduce the inspection cost of industrial products enterprises from the efficiency. The original assembly line multi-person detection of different items with a device to complete. The original 5-6 people detection line is reduced to 1-2 people, reducing the labor cost of enterprises.

The quality inspection of industrial products after production is an important link before product circulation. Machine vision has its unique technical advantages in industrial product inspection, which can reduce labor costs and bring considerable benefits to enterprises. Therefore, with the development of CCD technology, its application will be more and more extensive.