智能仪器中的自动切换量程技术
来源期刊:中南大学学报(自然科学版)1990年第3期
论文作者:蓝玉树 鲁五一
文章页码:301 - 306
关键词:微处理机; 自动增益控制; 放大器; 胀膨仪/位移测量; 智能仪器
Key words:microprocessors; automatic gain control; amplifiers; dilatometers/displacement measurements; intelligent instrument
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。
Abstract: This paper states the principle of automatic cut-over measure range in intei-ligent instrument and program control amplifying circuit,and describes a methodof the realization of automatic cut-over measure range for displacement detectionin dilatometer by micro-computer control,hard circuit,and design scheme ofthe program.An efficient method is advanced in order to solve the gain preci-sion problem of program control amplifying circuit.