Design of Human-machine interaction module and the communication of control system

This paper mainly introduces the design of the human-machine interaction module in a control system based on CAN (controller area network) bus, and the communication of the control system with CAN bus. The advanced AVR microcontroller is used to transmit and handle the data in the human-machine interaction module, in which ARM microprocessor and LED screen are used to achieve the show of data and the result from the controlled parts. In view of the fact that CAN bus is used to communicate in the control system which includes the human-machine interaction module and the other controlled modules, the research on the communication of CAN bus is presented to ensure that the effective communication of data between the human-machine interaction module and other extensible controlled modules, which are hanged on the CAN bus in the control system, can be transmitted efficiently, accurately and in real time.