铁路现场监测系统的建构技术

介绍一种新型的铁路现场监测系统,以嵌入式为核心,采用低压电力载波的总线通信方式,实现远端馈电及数据传输的双重功能。还介绍了系统的总体设计方案、各模块的软硬件设计,以及为保证数据传输,专门定义了通信协议,实现超时重传、检错重发、广播通信、单点通信等机制。

This paper presents a new railway field monitoring system with a embedded system as its core. Using low voltage power line carrier for bus communication, it realizes long-distance feeding and data transmission. It is also introduced that general system design, software and hardware designs of each module. Moreover, communication protocol is defined to realize overtime retransmitting, error-check retransmitting, broadcasting, point-point communication.