Abstract:

A machine vision system’s communication has large amount of data, requires realtime processing and is PCdependent. According to these characteristics ,this paper designs and implements a communication module for embedded machine vision operating terminals. The module adopts the Samsung 2440 as CPU,dualNIC,WinCE5.0 OS,uses the Modbus/TCP and custom protocol, and adds the custom function codes and file transfer protocol.All these means to make the file with large data sets transfer availably between the C/S mode operating terminals and the smart camera. So it is better to meet the communication needs of machine vision systems .The test results show the module can intelligently receive the camera’s configuration parameters . It takes 82ms to receive a gray image with 480*360 pixels on the average, and is highly reliable and realtime. Now the module has been successfully used in real industry fields.

Key words: machine vision;operating terminals;dualNIC;Modbus/TCP;custom protocol