基于数字化传输研究在编组站测速雷达的应用

Application of digital transmission research in velocity radar of Marshalling Station

编组站场的电气化改造,其接地电流以及瞬时电流会较大,对于传统的雷达设备会有较大的干扰,电信号直接通过电缆传输会受到电磁干扰。本文基于此背景,将传统的模拟信号传输,改为利用多普勒雷达数字化传输方式,采用双CAN网络结构将多台测速主机组建成一个系统,铁路行业作为对安全可靠性及安全性要求极为严格,本文作者结合系统实际情况,设计出实用的应用层协议,保证数字传输网络数据的可靠、安全传输,且抗干扰能力强。

For the electrification transformation of marshalling yard,the grounding current and instantaneous current will be large,which will cause great interference to the traditional radar equipment,and the electrical signal will be subject to electromagnetic interference if it is transmitted directly through the cable.the radar speed measurement system for marshalling yard will be disturbed by the electrified railway.Based on this background,this paper changes the traditional analog signal transmission to the digital transmission mode of Doppler radar,and uses the dual can network structure to form a system with multiple speed measuring hosts.As the railway industry has strict requirements on safety,reliability and safety,the author designs a practical application layer protocol combined with the actual situation of the system to ensure the number of digital transmission network Data transmission is reliable and safe,and has strong anti-interference ability.