The invention provides a railway bridge and
culvert height-limiting protection frame state
monitoring system and method, wherein the method is applied to the
system and comprises the steps: providing and collecting attitude information of a protection frame, environment information and image information near the protection frame; building a three-dimensional model of the protective frame, and performing attitude
simulation by utilizing the built three-dimensional model of the protection frame according to the received attitude information; extracting vehicle information from the received image information when the
simulation exceeds a threshold; and generating and issuing alarm information according to the
simulation result of the protection frame and the vehicle information. The
impact, posture and environment information of the left and right pillars of the height-limiting protection frame are detected, the influence of the
impact on the postures of the pillars and a cross beam and the environment where the protection frame is located are evaluated, then the
impact force and the bridge and
culvert posture information are simulated, an alarm is given according to whether the impact force and the bridge and
culvert posture information exceed preset threshold values or not, the
automation degree is high, the collected data range is wide, and comprehensive monitoring of the height-limiting protection frame is realized.