摘要
本文介绍利用铁轨的振动检测来往火车及其与测量点的距离，以便使在段内施工人员及时扯离，或铁路与公路交叉处放下栏杆确保铁运安全的报警系统。
A kind of railway safety alarm system was introduced in this paper. By means of the rail vibration, the distance between the measuring point and the going or coming trains could be checked up in order to make the workers working in the zone go away timely or make the worker on duty at the cross of the railway and the high way put down the rail.
出处
《陕西理工学院学报（自然科学版）》
1995年第2期98-102,共5页
Journal of Shananxi University of Technology:Natural Science Edition
关键词
机械波动
调制
解调
Mechanical wave motion
Modulation
Removing modulation
