| Title |
Implementation of an Intensity-Based Fiber Optic Vibration Sensor Using Serpentine Spring Topology with Proof Mass |
| Authors |
좌택위(Ze-Wei Zou) ; 정성용(Seong-Yong Jeong) ; 최상진(Sang-Jin Choi) ; 반재경(Jae-Kyung Pan) |
| DOI |
https://doi.org/10.5573/ieie.2019.56.10.73 |
| Keywords |
fiber optic vibration sensor (FOVS); intensity-based; serpentine spring; mass-spring structure; remote sensing |
| Abstract |
In this paper, an intensity-based fiber optic vibration sensor (FOVS) head structure with integrated four serpentine springs and a proof mass to improve the performance of our previous FOVS is proposed and experimentally demonstrated. Three lab-based prototype FOVSs with different long beam of the serpentine springs have been designed and implemented. We calculated the resonance frequencies for three cases, which were compared with the simulated resonance frequencies by ANSYS 15.0 with static simulation and SolidWorks with dynamic simulation. The experimental results for the lab based FOVSs for three cases showed the sensitivities of 33.22, 35.14, 36.77 mV/g, the minimum detectable accelerations of 0.081, 0.105, 0.144 mg, respectively. The responses of the three lab based FOVSs in time and frequency domains are in good agreement with those of a commercial accelerometer, which offers the feasibility of the proposed FOVS head. Also, the remote sensing characteristic of the FOVSs was experimentally demonstrated. The proposed FOVS has the advantages of simple structure, low cost, remote sensing characteristic and virtues of easy controllable sensitivity and minimum detectable acceleration. |