Publicação
Intensity-encoded polymer optical fiber accelerometer
| Resumo: | In this paper, we report the development and experimental implementation of a low-cost, compact, intensity-encoded accelerometer based on polymer optical fibers (POF). The proposed accelerometer sensor element relies on the misalignment between two POFs, being the external acceleration encoded in the optical signal intensity. The accelerometer performance was optimized by simulation, resulting in a coupling efficiency and modulation index values of 0.38 and 1.78, respectively. The implemented device has a sensitivity of 33.5 +/- 0.1 mV/g and a resonant frequency of 51.44 +/- 0.1 Hz, obtained for a signal to noise ratio of 20 dB. This value for the resonant frequency is suitable for applications in several fields, such as structural health monitoring of civil engineering structures. |
|---|---|
| Autores principais: | Antunes, P. F. C. |
| Outros Autores: | Varum, H.; André, P. S. |
| Assunto: | Accelerometer Optical sensor Plastic optical fiber Structural health monitoring (SHM) |
| Ano: | 2013 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso restrito |
| Instituição associada: | Universidade de Aveiro |
| Idioma: | inglês |
| Origem: | RIA - Repositório Institucional da Universidade de Aveiro |
| Resumo: | In this paper, we report the development and experimental implementation of a low-cost, compact, intensity-encoded accelerometer based on polymer optical fibers (POF). The proposed accelerometer sensor element relies on the misalignment between two POFs, being the external acceleration encoded in the optical signal intensity. The accelerometer performance was optimized by simulation, resulting in a coupling efficiency and modulation index values of 0.38 and 1.78, respectively. The implemented device has a sensitivity of 33.5 +/- 0.1 mV/g and a resonant frequency of 51.44 +/- 0.1 Hz, obtained for a signal to noise ratio of 20 dB. This value for the resonant frequency is suitable for applications in several fields, such as structural health monitoring of civil engineering structures. |
|---|
Atividades financiadas
Não foram encontrados projetos financiados.