| 摘要 |
<p>Device for measuring tension in mechanical constructions, comprising an optical fibre provided with a first Bragg grating (121), an elongated housing (101) encompassing the optical fibre (120). An elongated support member (103) with a mechanical strength greater than the strength of the optical fibre (120) is arranged in the housing (101) and attached to one end of the housing (101). The optical fibre (120) extends through the support member (103) and the housing (101), and is strapped in three attachment sites (111, 112, 113). Two Bragg gratings (121, 122) are arranged in the fibre between attachment sites (111, 112) and between attachment sites (112, 113). The device thus establishes two segments of the optical fibre (120), each of which contains a Bragg grating. The first Bragg grating (121) serves to measure tension forces exerted on the housing (101) and the other Bragg grating (122) serves to compensate for temperature variations.</p> |
