In order to ensure the performance of electric circuit type broken rail monitoring equipment,the test scheme is studied.According to the frequency of rail electrical parameters used by broken rail monitoring equipment,the rail is simulated,and the simulation environment is built.By analyzing the number,type and test grade selection of ports in lightning protection test and vibration and shock test of broken rail monitoring equipment,as well as the spe-cific requirements of false alarm rate,broken rail detection rate and broken rail alarm time in performance test,the test scheme is defined as follows:When carrying out lightning protection test,the communication port is recommended to be tested according to the test level of"level 6:connection between communication port of signal system equipment and rail"in article 6.2 of TB/T 3498-2018 Lightning test method for railway telecommunication&signaling system equipment;When the monitoring host is powered by solar panels,it is not recommended to carry out lightning protec-tion test on the power port;When carrying out vibration and shock tests,it is recommended to carry out vibration tests on the monitoring host according to article 10.1 of TB/T 2846-2015 Vibration testing methods for products of railway signaling on earth,according to appendix A of GB/T 2423.5-2019 Environmental testing-Part 2:Test methods-Test Ea and guidelines:Shock;When testing false alarm rate and broken rail detection rate,multiple simulated broden rail test points should be set,and the alarm time of traction backflow type broken rail monitoring equipment should be kept within 5 min.
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