Super large cable force self-sensing intelligent cable and measuring method based on fiber strain sensing

An optical fiber strain and super-large cable force technology, which is used in tension measurement, textile cables, textiles, and papermaking, etc. The effect of measuring accuracy, reducing requirements, simplifying the process
CN101526409AInactive Publication Date: 2009-09-09CHONGQING UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHONGQING UNIV
Publication Date
2009-09-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a super large cable force self-sensing measuring method based on fiber strain sensing, comprising the following steps: fiber strain sensing elements are pre-embedded in the anchorage zones of steel cables and measurement of the steel cable force is realized by measuring the strain capacity of the fiber strain sensing elements. The invention also discloses a super large cable force self-sensing intelligent cable based on fiber strain sensing. The invention has the beneficial technical effects of converting the large strain measurement of the cable to the small strain measurement of the anchorage zone, facilitating the common fiber strain sensors to meet the requirement of large strain measurement range and be suitable for cable force measurement of cables for especially big bridges, greatly lowering the measuring difficulty and cost, reducing the damage on the fiber strain sensors and prolonging the service lives of the fiber strain sensors.
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Description

Technical field:

[0001] The invention relates to a steel cable force self-sensing measurement technology, in particular to an ultra-large cable force self-sensing intelligent cable and a measurement method based on optical fiber strain sensing. Background technique:

[0002] The force of bridge cables is one of the important symbols to reflect whether the bridge is in normal operation state, and it is of great practical significance to accurately measure the force of bridge cables.

[0003] The existing cable force measurement methods mainly include pressure sensor method, frequency vibration method and magnetoelastic method. In the pressure sensor method, since both the load-bearing ring and the sensor are subjected to continuous pressure from the cable, there is no chance of recovery, which can easily cause fatigue of the pressure-bearing ring and its sensor, so the service life is limited. Because the measurement results of the vibration frequency method are affected by ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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