基于AD7705的在线激光功率检测系统设计  

Design of On-line Laser Power Detection System Based on AD7705

作　　者：嵇晓强[1,2] 戴明[1] 张秋鄂[3] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,吉林长春130033 [2]中国科学院研究生院,北京100039 [3]长春理工大学吉林,长春130022

出　　处：《现代电子技术》2009年第6期165-167,171,共4页Modern Electronics Technique

摘　　要：介绍基于Cx51的软单片机控制技术和AD7705模/数转换器的在线激光功率检测系统的工作原理和结构组成;设计了信号的采集、放大、测量、显示等内容;详细讨论了AD7705模/数转换器与AT89S51单片机接口电路的设计。由于采用AD7705简化了硬件,使系统响应迅速、测量精度大大提高,满足了在线检测的要求。设计中采用一种"抽样检测"的方法,设计出一种通用电路模型,满足了系统测量激光波长范围宽的要求。The principle and structure of the on- line laser power system which based on single chip control technology and AD7705 A/D convertor are introduced in this paper. Signal acquisition,amplified,measurement and display are designed. The AD7705 A/D convertor and single chip interface circuit design are discussed detailed. Owing to AD7705,simplifying the hard- ware and making the system to respond rapidly,improving the accuracy to meet the requirements of the on- line detection. A common circuit model adopting a sampling detection approach is designed to meet system requirement of a wide range of detection laser wavelength.

关 键 词：AT89S51单片机 AD7705模/数转换器 信号采集 在线检测 

分 类 号：TP335.1[自动化与计算机技术—计算机系统结构] TP274[自动化与计算机技术—计算机科学与技术]