Patent ID: 9581522
Date: 2017-02-28
CPC Classifications: G01D,G01M

Claim:
1. A distributed sensing optical fiber multi-objective multi-degree-of-freedom static and dynamic test device, comprising an optical fiber multi-degree-of-freedom fixing system, which includes an initial-end elastic fixation device and an end nonrigid fixation device; an artificial loading and unloading device, which rotates a horizontal threaded beam through an artificial control handle, rotates threads to drive a mobile platform to horizontally move under stress, and then pulls the initial-end elastic fixation device to horizontally move forward, so as to achieve artificial loading and unloading of an optical fiber; an oil pressure control loading and unloading device, which mainly consists of a telescopic cylinder, an oil pressure loading and unloading control handle and an oil pressure control system; an optical fiber under test; a distributed optical fiber Brillouin frequency shift acquisition system; and a data processing and analysis system, which is configured to online process and analyze digital information acquired by the distributed optical fiber Brillouin frequency shift acquisition system, a two-way force sensor, and a high sensitive thermometer, and draws a curve of information time course changes; wherein the optical fiber multi-degree-of-freedom fixing system is sequentially connected with the artificial loading and unloading device and the oil pressure control loading and unloading device, and the optical fiber under test is connected with the optical fiber multi-degree-of-freedom fixing system and the distributed optical fiber Brillouin frequency shift acquisition system; test on performance of optical fiber is achieved by controlling devices in the optical fiber multi-degree-of-freedom fixing system; the distributed optical fiber Brillouin frequency shift acquisition system is configured to acquire Brillouin frequency shift magnitude and other optical fiber optics information when the optical fiber is under a static or dynamic stress condition.