路基状态监测是铁路安全运营的保障措施之一,本文提出了一种基于水平测斜传感器的路基剖面沉降自动测量方法.水平倾斜传感器由主动、从动电机带动在被测路基断面扫描行走,实现对路基剖面沉降的自动测量；利用局域通信无线模块与DTU-GPRS模块搭建了无线数据采集与传输网络,实现对路基剖面沉降的长期远程监测.文中论述了系统的测量原理、系统构成与软硬件设计,通过实验室实验和现场实验,验证了系统的稳定性与可靠性.%Subgrade condition monitoring is a very important step to guarantee the railway safety, and subgrade settlement measuring and monitoring is an key part in subgrade condition monitoring. A new method which automatically measure subgrade settlement by using of a horizontal inclinometer was proposed in this paper. Two step motors were used to make the horizontal inclinometer move along the PVC pipe in the subgrade section, in this way, the scanning and measuring the subgrade settlement can be realized. In addition, wireless data acquisition and transmission network based on the wireless data module and GPRS data-transfer unit were built for the real-time and long-term subgrade settlement monitoring. The measuring principle, system configuration and design of software and hardware were given in the paper, and the stability and reliability of the system were verified by the laboratory experiments and field experiments.
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