摘要
本文阐述了智能仪器中,自动切换量程的原理以及常用的程控放大器电路,介绍了微机控制膨胀仪中,位移检测实现自动切换量程的措施、硬件电路和软件设计方案,为解决程控放大电路增益的精确度问题提出了一种有效的方法。
This paper states the principle of automatic cut-over measure range in intei-
ligent instrument and program control amplifying circuit,and describes a method
of the realization of automatic cut-over measure range for displacement detection
in dilatometer by micro-computer control,hard circuit,and design scheme of
the program.An efficient method is advanced in order to solve the gain preci-
sion problem of program control amplifying circuit.
关键词
智能仪器
切换量程
微机
microprocessors
automatic gain control
amplifiers
dilatometers/displacement measurements
intelligent instrument
