区间综合监控系统主机与解锁盘通信方案研究

以实现区间综合监控系统主机与多个解锁盘间的双向通信功能为目的,研究尽量简化其系统结构的方法。通过对RS-485总线技术、ProfiBusDP协议的分析研究,确定通信方式并制定专用通信协议,提出一种基于RS-485总线技术,以呼叫应答机制实现RSSP-I安全通信协议的通信方案,在不增加硬件通信设备的情况下,实现了系统主机与解锁盘间的稳定通信。提出的通信方案可以满足系统主机与解锁盘间通信需求,并简化了系统结构。

Communication scheme between host and unlocking panel in interval integrated monitoring system

Aiming at the two-way communication function between the host computer and multiple unlocking disks of the interval integrated monitoring system, in order to simplify the system structure as much as possible, this paper determined communication mode and formulated the special communication protocol through the analysis and research of RS-485 bus technology and ProfiBusDP protocol.The paper presented a communication scheme of RSSP-I secure communication protocol based on RS-485 bus technology and call response mechanism, which implemented stable communication between host computer and unlock disk without adding hardware communication equipment. The proposed communication scheme can meet the communication requirements between the host computer and the unlocked disk, and simplify the system structure.