Machine vision is a comprehensive technology, mainly composed of industrial cameras, light sources, industrial computers and corresponding image analysis software systems. Machine vision is like an industrial robot with a single function, such as using a camera to acquire images of the detected object, while special light sources enhance the features of the detected object, such as size features, surface defect features, etc. After professional image analysis, images with clear features are transmitted to the industrial computer at high speed. The processing software calculates the characteristics, and the industrial computer can control the actuator to classify according to the calculation result. eliminate. Alarms and other actions. Therefore, the performance of the industrial computer directly affects the processing speed and running time of the entire machine vision system, and is the key to the entire machine vision system.
How to choose an industrial computer for machine vision? The selection of industrial computer should pay attention to the following points:
1. Determine the size of the industrial computer.
The space of automation equipment is limited, and the size of the industrial computer should be selected according to the size of the installation space on site.
2. Determine the installation method of the industrial computer.
According to the available installation methods on site, industrial computers can be divided into wall-mounted, rack-mounted, desktop and embedded. At the same time, wiring methods should be considered to avoid wiring difficulties such as front wiring and rear wiring.
3. Determine the configuration of the industrial computer.
The configuration of industrial computer mainly includes processor, memory, storage, interface and so on. According to the size and installation environment of the industrial computer, select the processor to ensure the stable operation of the industrial computer. Depending on the given method to determine the size of the memory, some vision systems need to store images every time, and if run continuously every day, will generate a large number of memory images. At the same time, in order to speed up processing and reduce current transformers, it is necessary to consider using solid state drives instead of mechanical hard drives. Depending on the number of cameras in a machine vision system. The light source controller and connection method determine the interface of the industrial controller. If the system has 8 cameras. 4 light sources need to be controlled, the camera is connected through a network cable, and the light source controller is an RS232 interface to determine the network interface of the industrial controller. The number of serial ports.