缩短无线机车信号应变时间的方法研究

根据无线机车信号的应变时间与控制的列车数量、传输的信息量、传输速率、信号制式、冗余措施相关的特点,提出了选用传输速率高,接收和发送切换时间短的数传电台;采用交织技术减少信息冗余编码,减少传输信息量;改变列车的控制优先级,快速响应信号变化;采用可变帧结构减少总体传输的信息量以及根据所控制列车的多少改变控制周期及时隙的长短等方法以缩短无线机车信号应变时间。在保证信号传输的安全性和可靠性的前提下,缩短了无线机车信号系统应变时间。

Study on the Approaches for Shorten the Response Time of Radio-based Cab Signal

According to the relationship between the response time of radio-based cab signal and the number of controlled trains, message transmission volume, transmission speed, signal modulation, redundancy measures and so on, it is proposed that the transmitter-receiver with high transmission rate and less over-switch time between receiving and sending should be chosen, which adopt interleaving technology to reduee data redundant code and message transmission volume, enabling the shift of controlling priority of trains to respond the change of signal rapidly, and using variable frame structure to reduce the total volume of transmitting data and changing the cycle and slot length according to the number of controlled trains to shorten the response time of the radio-based cab signal in the requisite of ensuring the safety and reliability of signal transmission.