Optical Accelerometers for Detecting Low-Frequency Micro-Vibrations

Applied Sciences

卷:12

Ying-Jun Lei¹  Peng-Hao Hu¹  Qiang-Xian Huang¹  Rui-Jun Li¹  Lian-Sheng Zhang¹ 

[1] School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230009, China;

关键词: accelerometer;    optical sensing systems;    optical modulation;    accelerometer review;   

DOI  :  10.3390/app12083994

来源: DOAJ

【 摘 要 】

Optical accelerometers are high-precision inertial sensors that use optical measurement technology to achieve high-precision and electromagnetic interference-resistant acceleration measurements. With the intensive research and development of optical accelerometers in recent years, their applications in inertial navigation, structural health monitoring, precision vibration isolation systems, wind turbine fault monitoring, earthquake monitoring, and other low-frequency vibration detection have flourished. Optical accelerometers have various schemes; however, their characteristics vary considerably due to different optical modulation schemes. This study aims to address the lack of systematic evaluation of currently available low-frequency optical accelerometers. Optical accelerometers can be classified into four categories in accordance with their optical modulation schemes: optical path-, optical intensity-, optical phase-, and optical wave-length-modulated accelerometers. The typical performance, advantages and disadvantages, and possible application scenarios of various optical accelerometers are summarized. This study also presents the current status and trends of low-frequency optical accelerometers in consideration of the growing demand for high-precision, low-frequency acceleration measurements.

【 授权许可】

Unknown