Tunable optical fiber vibration sensor device, system and method
By designing a tunable fiber optic vibration sensor and changing the width and thickness of the spring sheet to form a non-uniform structure, the problem that cantilever beam fiber optic vibration sensors cannot simultaneously achieve both frequency bandwidth and sensitivity is solved. This enables superimposed adjustment of sensitivity and frequency response range, making it suitable for fault detection in various scenarios.
CN121877167APending Publication Date: 2026-04-17NORTHWEST UNIV
0 Cites 0 Cited by
Patent Information
- Application Number
- CN202610277532.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-03-09
- Publication Date
- 2026-04-17
AI Technical Summary
Technical Problem
Existing cantilever beam fiber optic vibration sensors cannot simultaneously achieve a large response frequency bandwidth and high sensitivity, thus limiting their application range.
Method used
Design a tunable fiber optic vibration sensor. By changing the width and thickness of the spring sheet linearly along the length direction to form a non-uniform structure, and by sliding the slider to the spring sheet, the sensitivity and frequency response range can be superimposed and adjusted.
Benefits of technology
It achieves a wider tuning range, making it suitable for quickly and accurately locating internal fault sources in equipment or providing early warnings from outside the equipment, thus improving the applicability of cantilever fiber optic vibration sensors.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention relates to a tunable optical fiber vibration sensor device, system and method, and the device comprises a first optical fiber vibration sensor which comprises an elastic sheet, a sliding block, an adjusting part, a mass block, a pedestal, and an optical fiber; the elastic piece is in an isosceles trapezoid shape, and the thickness and the width of the elastic piece linearly change in the length direction of the elastic piece in the same trend, so that the two ends of the elastic piece in the length direction are a wide-thick end and a narrow-thin end respectively. The wide and thick ends of the elastic sheets are connected with the mass block, and the narrow and thin ends are connected with the base; the elastic piece is provided with a sliding connection part in sliding fit with the sliding block, and the sliding block can move in the length direction of the elastic piece. The adjusting piece is used for fixing the sliding block and the elastic piece. The optical fiber is provided with a coupling point connected with the base and the mass block, and the coupling point connected with the mass block can synchronously vibrate along with the mass block. Or the device comprises a second optical fiber vibration sensor, the wide and thick end of the elastic sheet is connected with the base, and the narrow and thin end is connected with the mass block. According to the invention, the use requirements of large response frequency bandwidth or / and sensitivity range can be met.
Need to check novelty before this filing date? Find Prior Art