Remote Control And Info Diffusion Integration System Based On CAN BUS

Nowadays people pay more and more attention to the field bus with the technology development. The CAN bus is widely used in the automobile industry,industrial controlling and security protect fields because of its outstanding reliability,flexibility and real-time data transmission ability. This paper realizes a remote control and info diffusion integration system in the CATV system using CAN bus.This paper designs the CAN nodes in two kinds to meet different kinds of requirement,which is a feature of this paper. One is STM32 controled CAN node,which uses ARM designed advanced Cortex-M3 core and aims at complicated terminal node,and it has high price performance ratio,besides CAN it also has more functions such as serial port and AD converter,and it can control the LED display screen and accomplish data acquisition too. Another is STC89C58 controled CAN node,which aims at simple and price sensitive terminal node and it can control the FM receiver and accomplish addressable FM broadcast.This paper makes a detailed introduction to the key technology of the whole system designing,developing and application.The main content in this paper list as below:the controling software writing with C# in the front-end computer;the designing of the STM32F103 controled CAN node,including the PCB hardware design and embedded software design;the designing of the STC89C58 controled CAN node,including it's PCB board design and software design;and it also simply introduces the functions and designing of related equipments such as the LED screen and FM receiver used in this system.This system has advantages such as long distance control,more terminal units,the ability of real-time interaction and so on,It could make different kinds of terminal units transmit data bidirectionally, and also it has high practical value.