| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical fiber sensor for detecting impact with high accuracy having excellent noise resistance and generating little mechanical deterioration caused by an impact. SOLUTION: The optical fiber sensor 10 for detecting a change of an optical loss caused by deformation received by a synthetic resin optical fiber 1 by allowing light to pass the synthetic resin optical fiber 1 is equipped with an elastic structure 3 provided with a hole 2 to be passed by the synthetic resin optical fiber 1, the synthetic resin optical fiber 1 inserted into the hole 2 of the elastic structure 3, a board-like member 4 provided in the elastic structure 3 along the longitudinal direction of the synthetic resin optical fiber 1, and a projecting member 4a provided at a fixed interval with the board-like member 4 and brought into contact with the side of the synthetic resin optical fiber 1. In the sensor 10, when an impact is applied, the projecting member 4a applies deformation to the synthetic resin optical fiber 1 corresponding to the impact. COPYRIGHT: (C)2006,JPO&NCIPI |
