【摘要】 介绍一种基于ADμC842单片机的激光波长计信号采集系统,该系统采用ADμC842外部触发DMA工作方式,实现对待测信号的大容量快速采集和存储,具有采集精度高、速度快、性价比高、可靠性好、易于控制程序开发等优点。使采集数据FFT变换成为可能,以便在频谱图上得到多波长激光频谱。更多还原

【Abstract】 This paper introduces a signal collecting system of infrared wavemeter based on ADμC842 MCU. In this system, ADμC842 works in the mode of external trigger enable DMA to collect signal in big capability. It has merits of high precision and fast speed in collection, high ratio of performance to price, good reliability, simplicity in the development of control procedure and so on.. This enables system to take the signal data FFT conversion and get spectrum of multi-frequency optic in the graph of frequent domain.更多还原