| ATO system of high-speed railway is On the basis of CTCS-2 /CTCS-3 train control system in China,vehicle set ATO driving unit to realize automatic control,the ground special accurate positioning transponder realize accurate positioning,ground equipment through the GPRS communication platform door control,standing between data sending and train operation adjustment plan(hereinafter referred to as operation plan).Without reducing the safety level of the train control system and on the premise of ensuring the high-speed and high-density operation of the train,the train can meet the stable control requirements of starting acceleration,interval operation,entry and stop of the station,so as to ensure the efficient and comfortable operation of the train.According to China’s experience in the CTCS-2/CTCS-3 train control system,simulation tests should be carried out in the laboratory before the real line test.In view of the current ATO train control system construction and application process of highspeed railway project cost,project time and other problems,the demand analysis of highspeed railway ATO train control vehicle equipment simulation test system is presented,and the basic function of the simulation test system is realized based on MVB protocol technology.The main tasks are as follows:(1)Requirement analysis of simulation test system for train control onboard equipment of ATO systemThe simulation test system of on-board equipment of high-speed railway ATO system mainly provides the train and ground related information that the on-board equipment needs to receive.After simulating the train operation,the on-board equipment will make corresponding response and output information after receiving the information through the control logic operation,and judge whether the control logic of the on-board system is normal by comparing with the expected results.The on-board equipment simulation test system shall include the following functions: line data verification and scene simulation;train interface simulation;speed signal simulation;track circuit simulation;balise simulation;MVB simulation;fault insertion function; automatic test function,etc.(2)Design and implementation of control subsystem of simulation test systemIn this thesis,MVB simulation part is designed and implemented.According to the analysis of main functions and requirements,and the analysis of MVB protocol between ATO and TCMs,it is divided into general MVB initialization(equipment address,MVB line configuration,MVB response timeout configuration),creation of process data flow storage,initialization of network & configuration equipment,and use of DSW receiving port Create device status word flow storage,data communication and other modules.(3)Simulation test system of control subsystemThe basic functions of the simulation test system based on MVB protocol technology are verified by testing the functions of MVB initialization,normal communication,information transmission,data recording,custom data sending,etc. |
