传统的光子多普勒测速系统中, 速度信息的获得都采用离线处理, 处理周期长, 导致该传感系统不能实时应用。从光子多普勒速度测量系统的原理出发, 结合LabVIEW的图形化语言设计和Matlab强大的数值处理能力, 以数据采集卡和PC机为采集和处理平台, 提出并设计了一种信号采集和处理系统, 实现了测速信号的实时数据采集、在线处理和显示。

In traditional photonic Doppler velocimetry system, velocity information is generally obtained by off-line processing. The processing cycle is so long that the sensing system can’t be used in real time. From the principle of photonic Doppler velocimetry system, with the graphical language design of LabVIEW and the powerful numerical processing capacity of Matlab, using data acquisition cards and PC as acquisition and processing platforms, a signal acquisition and processing system is proposed and designed. The real-time data acquisition, on-line processing and display of velocimetry signal are realized.