基于STC12C5A60S2与AD620的小信号采集系统  

STC12C5A60S2 and AD620-based acquisition systems for small signal

作　　者：崔国丽[1] 车喜龙[1] 

机构地区：[1]长安大学信息工程学院,陕西西安710064

出　　处：《电子设计工程》2012年第11期112-114,共3页Electronic Design Engineering

摘　　要：在测控领域中,经常遇到监测对象输出信号较小,难以直接采集,一般都需要将其放大后再做处理。介绍了一种小信号采集系统的实现方法,利用具有A/D转换功能的单片机STC25A60S2和具有精确放大功能的易用放大器AD620实现了最小系统,并论述了系统设计与实现,详细介绍了采集小信号的过程,并给出了实际应用的例子,以及小信号采集在相关领域的应用。Frequently encountered in the measurement and control field monitoring object output signal is small, it is difficult to direct acquisition, generally need to enlarge it and then deal with. The article describes a signal acquisition system, using the A / D conversion function the microcontroller STC25A60S2 and ease of use with accurate zoom function amplifier AD620 to achieve a minimum system, and discusses the system design and implementation, and details of the acquisitionsmall-signal process, and gives examples of practical applications, as well as small-signal acquisition in the relevant field.

关 键 词：STC12CSA60S2 信号采集 信号调理 A/D转换 

分 类 号：TP302[自动化与计算机技术—计算机系统结构]