在论述国内外光纤光栅传感器生产厂商概况和光纤光栅传感技术的优势的基础上，分析列举了光纤光栅传感技术在轨道交通车辆的若干应用实例，展望光纤光栅传感器在轨道交通车辆上应用前景。随着光纤光栅传感技术的不断发展，以传统的测试系统逐步由光纤光栅测试系统所取代

This paper elaborates advantages of FBG sensing technological on the basis of introducing FBG sensor manufacturers from home and abroad and the basic principles of FBG sensing technology. FBG is a kind of particular fiber optics, whose changeable parameter of sensitivity is equal to optical wave length. FBG sensors are made up of the sensitive property of their wavelength to physical parameters, such as temperature, strain etc. Several practical examples are given about the application of FBG sensing technology to rail transit vehicles. The prospect of adopting FBG sensing system for rail transit vehicles is highlighted. With the continuous development of FBG sensing technology, the traditional electrical testing methods will be replaced by it gradually.