公开(公告)号：US09200945B2

公开(公告)日：2015-12-01

申请号：US13692892

申请日：2012-12-03

Applicant: UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC.

Inventor： Jenshan Lin ,  Yan Yan ,  Changzhi Li

IPC: G01H9/00

CPC classification number: G01H9/00

Abstract: Embodiments of the present invention provide a method for non-contact detection techniques of mechanical vibrations utilizing a radio frequency system incorporating multiple carrier wavelengths. The new detection method measures multiple harmonic pairs at a carrier frequency and improves the detection accuracy and reliability by first inspecting the Bessel function coefficient of each harmonic and then determining the harmonic amplitude. The original mechanical vibration can then be reconstructed. Embodiments can be used to realize sensing of complex non-sinusoidal vibrations using a wavelength division sensing technique and allow non-contact detection through walls, smoke, fog or other low visibility environments with the advantage of longer range detection and easy integration at a low cost.

Abstract translation: 本发明的实施例提供一种利用包含多个载波波长的射频系统的机械振动的非接触检测技术的方法。 新的检测方法以载波频率测量多个谐波对，首先检查每个谐波的贝塞尔函数系数，然后确定谐波幅度，提高检测精度和可靠性。 然后可以重建原始的机械振动。 可以使用实施例来实现使用波分传感技术来检测复杂的非正弦振动，并允许通过墙壁，烟雾，雾或其他低可见度环境进行非接触检测，具有更长距离检测和易于以低成本集成的优点 。