The principle of Brillouin opticaltimedomainreflectometer (BOTDR) is introduced and its application to the strain monitoring of the strain distribution of the reinforced concrete beam is studied.
At the same time, it discusses the elements influencing the test accuracy of opticaltimedomainreflectometer (OTDR) and measures for eliminating test error.
同时，还讨论了影响光时域反射仪(OTDR)测试精度的要素和消除测试误差通常采用的对策。
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A distributed optic fiber type strain sensing system based on opticaltimedomainreflectometer and used for monitoring large scale structural strain and deformation state is studied in the paper.