Research and Application of Leakage Cable Monitoring Technology in Rail Transit
With the development of rail transit construction,the broadband wireless private network based on 4G LTE-M has also entered the subway.LTE-M will carry important data services such as CBTC signals and PIS,and its signals will be carried through leakage to achieve full coverage of wireless signals in subway sections.At present,the reliability and safety of wireless communication are increasingly required in the subway field.Under the normal operation of the subway,the leaky cable is prone to failure.Once the leaky cable fails,the communication will be interrupted and the operation safety will be affected.At present,there is no effective and convenient online monitoring method for the leaky cable.This paper takes the completed Shanghai Metro Line 15 as the research background to discuss and study the leaky cable monitoring technology.When the leaky cable or the leaky cable joint of the trunk line fails,cable leakage monitoring equipment will automatically monitor and find the fault point,accurately locate the location of the fault point,and report it to the network management center through the transmission channel,so that relevant departments can deal with it in time,providing a safer guarantee for subway communication signal coverage.
rail transitLTEmonitoring of cable leakageprecise positioning
NETL
NSTL
万方数据
维普
