Train rail foreign matter intrusion detection device

The utility model provides a train rail foreign matter intrusion detection device, it includes that a plurality of groups include along the measuring group that train rail distributes, every measuringgroup that wherein the laser shot sensor of one side is a1, a2, a3, a4 respectively along two rows of laser shot sensors that mate one by one of the equidistant range in train rail both sides... An,the laser shot sensor of opposite side is b1, b2, b3, b4 respectively... Bn, wherein a matches bn+1, first laser shot sensor of final laser shot sensor and opposite side of wherein one side mate, eachis organized the laser shot sensor and constitutes the laser shot net, it is regional to cover the inter block, wherein n) 0. This train rail foreign matter intrusion detection device has the advantage that the design is scientific, the coverage is comprehensive. 本实用新型提供了种火车轨道异物入侵检测装置，它包括若干组沿火车轨道分布的检测组，每个检测组包括沿火车轨道两侧等间距排列的两排匹配的激光对射传感器，其中侧的激光对射传感器分别为a1、a2、a3、a4...an，另侧的激光对射传感器分别为b1、b2、b3、b4...bn，其中an匹配bn+1，所述的其中侧的最后个激光对射传感器