Design And Implementation Of The System Of The Remote Door Mornitoring Based On The CDMA2000Network

With the development of urban rail transit system, the subway becomes the most important vehicle for the public travelling, the train department attaches great importance to the safety of metro operation.but its high failure rate especially the train door impact on the safety of the passengers.Usually, when the door goes wrong, the door companies send a repairman to the problem site to detect the malfunction and devise solutions. The whole process which wastes time and labour costs can not fix the malfunction quickly and in time. The article designs a remote monitoring system of the train door on the question to realize acquiring the door’s status imformation and malfunction imformation in real time. The technical staff analyze the data in database, guide the repairman fix the problems remotely.The system is mainly composed of the front unit which is mounted on the door and the monitoring center. The front unit can switch power, aquire data from the bus and prscess the data, classify the data and storage the data with different strategy, upload the data and so on. The front unit connects to the wireless public network through CDMA2000, then builts a communication link with the server of the monitoring center. The functions of the monitoring center includes the data reception and analysis, information extraction, classification and storage, automatically issue the configuration parameter and the strategy document, monitoring the front unit and so on. Actual operating results show that the scheme can meet the needs, each modules are stable and reliable, the system can require the door"s status and malfunction imformation in real time, realize the purpose of monitoring the door.