基于激光散斑的微振动探测技术研究进展

Research Progress in Microvibration Detection Technology Based on Laser Speckles

基于激光散斑的微振动探测技术具有非接触、系统简单、隐蔽性好、灵敏度高、探测距离远等优点,在医疗、航空、市政、安防、国防等各个领域都有广泛应用需求。按照探测体制的发展顺序,从高速面阵相机、光电二极管、线阵相机、卷帘快门相机四个方面综述了激光散斑微振动探测技术的研究进展,讨论了不同体制的优缺点,总结了所采用的振动信号提取方法,并对该技术的未来发展进行了展望。

Microvibration sensing technology based on laser speckles has several advantages,including noncontact,system compact,invisibility,high sensibility and long sensing distance,and it can be used in medical treatment,aerospace,civil engineering,security,national defense,etc.In this paper,we reviewed the development of microvibration detection using laser speckles according to the developing sequence and detection scheme.Here,we introduced four detecting schemes,including high-speed area array camera,photodetector,line array camera,and rolling shutter camera.Furthermore,we discussed their advantages and disadvantages and summarized the algorithms for extracting vibration signals.Additionally,we provided an outlook on future development trends in laser speckle-based microvibration detection.