US 11,897,524 B2
Overload and unbalanced load detecting system for railway and detecting method
Xiaobing Liu, Beijing (CN); Xiangsheng Pang, Beijing (CN); Zhiqiang Wang, Beijing (CN); Jianming Fu, Beijing (CN); and Chao Guo, Beijing (CN)
Assigned to BEIJING ORIENTAL RAILWAY TECHNOLOGY DEVELOPMENT CO., LTD., Beijing (CN)
Filed by BEIJING ORIENTAL RAILWAY TECHNOLOGY DEVELOPMENT CO., LTD., Beijing (CN)
Filed on Jul. 9, 2020, as Appl. No. 16/925,282.
Application 16/925,282 is a continuation of application No. PCT/CN2018/072024, filed on Jan. 10, 2018.
Prior Publication US 2020/0339167 A1, Oct. 29, 2020
Int. Cl. B61L 1/06 (2006.01); B61L 23/04 (2006.01); B61L 27/57 (2022.01); G01G 19/04 (2006.01); G01L 1/04 (2006.01)
CPC B61L 1/06 (2013.01) [B61L 23/047 (2013.01); B61L 27/57 (2022.01); G01G 19/047 (2013.01); G01L 1/04 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An overload and unbalanced load detecting system for a railway, comprising at least one steel rail used as a force bearing carrier of fiber-optic sensitive elements, wherein a rail web of each of the at least one steel rail between every two adjacent rail sleepers is provided with two sampling points at each side, the two sampling points on one side are symmetrically disposed about a corresponding one of the at least one steel rail with respect to the two sampling points on a second-side, the two sampling points at each side are disposed on a neutral axis of the corresponding one of the at least one steel rail, one fiber-optic sensitive element of the fiber-optic sensitive elements configured for continuously measuring a load when a train passes through the two sampling points at each side is fixed at each of the sampling points obliquely relative to the neutral axis of the corresponding one of the at least one steel rail in a plane where a side of the corresponding one of the at least one steel rail is located, and two of the fiber-optic sensitive elements on a same side of each of the at least one steel rail are disposed at an angle of 90° with each other in a plane where the side of the corresponding one of the at least one steel rail is located; wherein the two sampling points at each side are configured to be equidistant from a center of spacing between the two adjacent rail sleepers, and an effective data collecting section is formed between the two sampling points at each side;
force acting on the two sampling points on a same side is collected by the fiber-optic sensitive elements to obtain two shear-stress waveforms when the train passes through the two sampling points on the same side, and the two shear-stress waveforms are synthesized to form an approximately square effective data collecting section having peak values of the two shear-stress waveforms as end points; and
when the train passes through the approximately square effective data collecting section at a high speed, data of signals continuously output from two of the fiber-optic sensitive elements disposed at the two sampling points on the same side are synthesized to reflect the load of the train and an influence of vibration of the train on the load when the train is dynamically passing through; a plurality of the approximately square effective data collecting sections are continuously disposed between a plurality of the rail sleepers so as to obtain the load of the train and a complete waveform of the vibration of the train when the train is dynamically running; and an overload and unbalanced load detection data is accurately obtained by data analyzing and processing.