A high-precision micro-stress sensor

A micro-stress and sensor technology, applied in instruments, measuring force, and force measurement by measuring the change of optical properties of materials under stress, etc. , to achieve the effect of small phase detection error, wide application occasions, and improved sensing accuracy
CN109100063BInactive Publication Date: 2019-11-19JILIN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JILIN UNIV
Publication Date
2019-11-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a highly precise micro-stress sensor, and belongs to the technical field of optical fiber sensors. The main structure of the micro-stress sensor comprises a pump source (1), anoptical wavelength division multiplexer (2), an erbium doped fiber (3), and the like. According to the highly precise micro-stress sensor a sinusoidal signal is used as a modulation signal, high-frequency interference is not generated, and the micro-stress sensor has the characteristics of being more reliable in operation, high in sensing precision, wide in application range, and the like.
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Description

technical field

[0001] The invention belongs to the technical field of optical fiber sensors, in particular to a high-precision micro-stress sensor. Background technique

[0002] Fiber Bragg grating (FBG) is widely used in the field of sensing technology due to its advantages of anti-electromagnetic interference, chemical resistance, small transmission loss, small size and light weight, and easy mass production. At present, stress sensors are widely used in the field of engineering technology. Especially in emerging fields such as nanoparticle interaction and cell mechanics, there is an urgent need for micro-stress sensors, and the safety monitoring of bridges, tunnels, and building structures is inseparable from micro-stress sensors. Due to the above-mentioned advantages of the fiber Bragg grating, the stress sensor formed by it has higher reliability than other sensors, and is more suitable for use under harsh conditions.

[0003] The prior art closest to the present inv...

Claims

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