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Double Frequency of Difference Frequency Signals for Optica Doppler Effect Measuring Velocity

机译：视差多普勒效应速度测量中差频信号的双频

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摘要

The mathematical model for measuring moving objects (including fluid body, rolled steel materials in the steel works, turbulent flow, vibration body, etc.) velocity or speed by non-contact method is established using light-wave Doppler effect in this paper. In terms of concrete conditions of different optical circuits, and with the correlated conditions substituted, it is easy to obtain the measurement velocity formulas related to optical circuits. An optical circuit layout of difference Doppler effect measuring velocity is suggested in this paper. The fine beam of light emitted by laser is divided into parallel two beam by spectroscope and mirror They are focused on the object point p by a condenser lens respectively. The object point p become a diffuse source. It scatter rays to every aspect. Some rays scattered by the diffuse source p are collected by a lens. Photoelectric detecter receive the lights collected by the lens. This optical circuit layout can realize the double frequency of difference frequency signals in a novel way.
机译：利用光波多普勒效应，建立了非接触法测量运动物体（包括流体，钢中的轧制钢材，湍流，振动体等）速度或速度的数学模型。根据不同光路的具体条件，并用相关条件代替，很容易获得与光路有关的测量速度公式。提出了差分多普勒效应测量速度的光路布局。激光发出的细光束通过分光镜和反射镜分为平行的两束，分别通过聚光镜聚焦在物点p上。物点p成为漫射源。它会将射线散射到各个方面。由漫射源p散射的一些光线被透镜收集。光电探测器接收由镜头收集的光。这种光电路布局可以以新颖的方式实现差频信号的双倍频率。

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