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A platform for research: civil engineering, architecture and urbanism
Roadbed emptying monitoring sensor based on distributed optical fiber sensing technology
According to the roadbed emptying monitoring sensor based on the distributed optical fiber sensing technology, optical fibers penetrate through an optical fiber telescopic control spring at certain intervals and are fixed to the two ends of the stretched optical fiber telescopic control spring, so that certain deformation redundancy is given to the optical fibers in the sensor in a non-working state; the optical fiber is prevented from being fractured due to overlarge local stress before the sensor is transported or installed; the optical fiber at the interval section of the two optical fiber telescopic control springs is sleeved by the protection groove and is covered by the deformation block; an armored protective sleeve is sleeved outside the optical fiber telescopic control spring, so that the optical fiber telescopic device is protected; optical fibers at the end parts of the protection grooves are connected with jumpers; the jumpers are led out of the pavement and are connected with an optical fiber demodulator; the sensor test section is covered with a dustproof sleeve to prevent soil and stones from entering gaps of the deformation block and further hindering longitudinal compression deformation of the deformation block. Based on a distributed optical fiber sensing technology, the system is high in precision and large in coverage; and meanwhile, the manufacturing cost is low, the layout is simple, the durability is good, and high-precision emptying evolution process data can be obtained through continuous data acquisition.
一种基于分布式光纤传感技术的路基掏空监测传感器，光纤每隔一定距离穿过光纤伸缩控制弹簧，并固定于拉伸后的光纤伸缩控制弹簧两端，以给予传感器内光纤在非工作状态下一定的变形冗余，以免在传感器运输或安装前光纤局部受力过大而断裂；两个光纤伸缩控制弹簧间隔段的光纤由保护槽套住，上覆变形块；光纤伸缩控制弹簧外套铠装保护套管，实现对光纤伸缩装置的保护；保护槽端部的光纤连接跳线，跳线引出路面接入光纤解调仪；传感器测试段外包防尘套，以防止土石进入变形块的空隙进而阻碍变形块的纵向受压变形。本发明基于分布式光纤传感技术，精度高，覆盖面大；同时，造价低，布设简单，耐久性好，可持续采数获取高精度掏空演化过程数据。
Roadbed emptying monitoring sensor based on distributed optical fiber sensing technology
According to the roadbed emptying monitoring sensor based on the distributed optical fiber sensing technology, optical fibers penetrate through an optical fiber telescopic control spring at certain intervals and are fixed to the two ends of the stretched optical fiber telescopic control spring, so that certain deformation redundancy is given to the optical fibers in the sensor in a non-working state; the optical fiber is prevented from being fractured due to overlarge local stress before the sensor is transported or installed; the optical fiber at the interval section of the two optical fiber telescopic control springs is sleeved by the protection groove and is covered by the deformation block; an armored protective sleeve is sleeved outside the optical fiber telescopic control spring, so that the optical fiber telescopic device is protected; optical fibers at the end parts of the protection grooves are connected with jumpers; the jumpers are led out of the pavement and are connected with an optical fiber demodulator; the sensor test section is covered with a dustproof sleeve to prevent soil and stones from entering gaps of the deformation block and further hindering longitudinal compression deformation of the deformation block. Based on a distributed optical fiber sensing technology, the system is high in precision and large in coverage; and meanwhile, the manufacturing cost is low, the layout is simple, the durability is good, and high-precision emptying evolution process data can be obtained through continuous data acquisition.
一种基于分布式光纤传感技术的路基掏空监测传感器，光纤每隔一定距离穿过光纤伸缩控制弹簧，并固定于拉伸后的光纤伸缩控制弹簧两端，以给予传感器内光纤在非工作状态下一定的变形冗余，以免在传感器运输或安装前光纤局部受力过大而断裂；两个光纤伸缩控制弹簧间隔段的光纤由保护槽套住，上覆变形块；光纤伸缩控制弹簧外套铠装保护套管，实现对光纤伸缩装置的保护；保护槽端部的光纤连接跳线，跳线引出路面接入光纤解调仪；传感器测试段外包防尘套，以防止土石进入变形块的空隙进而阻碍变形块的纵向受压变形。本发明基于分布式光纤传感技术，精度高，覆盖面大；同时，造价低，布设简单，耐久性好，可持续采数获取高精度掏空演化过程数据。
Roadbed emptying monitoring sensor based on distributed optical fiber sensing technology
一种基于分布式光纤传感技术的路基掏空监测传感器
LIU WANQIU (author) / TAN CHUNXUN (author) / ZHOU ZHI (author) / LIU DACONG (author) / ZHANG WANGANG (author)
2024-08-09
Patent
Electronic Resource
Chinese
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