基于CAN总线的云台镜头解码器设计  

Design of Decoder in PAN/TILT and LENS Control System Based on CAN-BUS

作　　者：陈卫国[1] 戴瑜兴[1] 王建君[1] 

机构地区：[1]湖南大学电气与信息工程学院

出　　处：《湖南文理学院学报（自然科学版）》2007年第2期65-67,86,共4页Journal of Hunan University of Arts and Science(Science and Technology)

摘　　要：针对闭路电视监控系统中云台镜头解码器的通讯通常采用RS-485协议,而控制器局域网络(CAN)是一种能有效支持分布式控制和实时控制的串行通讯网络,具有高性能、高可靠性的特点.以P87C591单片机为控制器,设计基于CAN总线的解码器系统,并给出硬件电路和软件编程,开发了CAN应用层通讯协议,实现了控制数据的快捷传输.Communication of traditional PAN/TILT and LENS decoder in closed circuit TV monitor system usually depends on RS-485 serial communication protocols.Controller Area Network （CAN） is a kind of serial communication network that supports the distributed control and real time control. CAN-bus has become an international standard about fieldbus due to its high capability and high reliability. A new system for decoder based on CAN-bus has been designed, which uses P87C591 single-chip as controller. The software program and hardware circuits of the control system are presented, the design of CAN protocol of application layer is given, and attains the convenient and prompt transmission of control order.

关 键 词：解码器 P87C591 CAN总线 云台 镜头 

分 类 号：TP393.1[自动化与计算机技术—计算机应用技术]