A measurement system for gas dynamic concentrations based on TDLAS was constructed by using an auto-balanced photo receiver and a digital lock-in amplifier.
基于自平衡激光接收器和数字锁定放大器构造了TDLAS汽车尾气动态浓度测量系统。
A method of implementing digital lock in amplifier with DSP (digital signal processor) and sampling ADC (analog digital converter) is discussed.
探讨了用DSP(数字信号处理器)和采样adc(模数转换器)实现数字锁定放大器的一种方法。
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