会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 6. 发明申请
    • LASER SELF-MIXING DIFFERENTIAL DOPPLER VELOCIMETRY AND VIBROMETRY
    • 激光自混合差分多普勒测速和振动
    • WO2010058322A1
    • 2010-05-27
    • PCT/IB2009/055001
    • 2009-11-11
    • PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBHKONINKLIJKE PHILIPS ELECTRONICS N.V.HAN, Meng
    • HAN, Meng
    • G01P3/36G01P5/26G01S17/58
    • G01P3/366G01P5/26G01S7/4916G01S17/58
    • The present invention relates to a method and device of measuring the velocity of a target (10) by laser self-mixing. An output beam (2) of a single laser source (1) is split into two sensing beams (4, 5). The two sensing beams (4, 5) are directed on different beam paths to a surface of the moving target (10), wherein said different beam paths are selected to be symmetrical to one another. From a measured intensity variation of the output beam (2) Doppler frequencies of laser radiation of the two sensing beams (4, 5) backscattered from the target (10) are determined. Based on these Doppler frequencies a vertical velocity of the moving target (10) is determined from a difference in the Doppler frequencies and a longitudinal velocity of the moving target (10) is determined from the sum of the Doppler frequencies. The invention allows a simple and low cost design of the device and a simple processing of the measurement signal.
    • 本发明涉及通过激光自混合来测量靶(10)的速度的方法和装置。 单个激光源(1)的输出光束(2)被分成两个感测光束(4,5)。 两个感测光束(4,5)被引导到移动目标(10)的表面的不同光束路径上,其中所述不同光束路径被选择为彼此对称。 从输出光束的测量的强度变化(2)确定从目标(10)反向散射的两个感测光束(4,5)的激光辐射的多普勒频率。 基于这些多普勒频率,根据多普勒频率的差确定移动目标(10)的垂直速度,并根据多普勒频率的和确定移动目标(10)的纵向速度。 本发明允许设备的简单且低成本的设计以及测量信号的简单处理。