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