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研制了一种新的铁路道口无线通信监测系统．该系统将传感器、计算机和无线通信技术融为一体，能测量列车的速度、车厢数目和列车行进的方向，可向道口站工作人员发出火车将通过该站的声光信号．本文还详细分析和计算传感器及其电路．实用结果证明了该系统的可靠性
Developed a new railway crossing wireless communication monitoring system. The system integrates sensors, computers and wireless communication technology to measure the speed of trains, the number of cars and the direction of trains. The system can send signals to the staff at the crossing to send the signals of the trains passing the station. This article also detailed analysis and calculation of the sensor and its circuit. Practical results demonstrate the reliability of the system