一种实用测量放大器的电路设计  

Circuit Design of a Practical Measurement Amplifier

作　　者：刘倩倩 Liu Qianqian(Shanxi Engineering Vocational College,Taiyuan Shanxi 030000)

机构地区：[1]山西工程职业学院,山西太原030000

出　　处：《现代工业经济和信息化》2022年第2期89-90,116,共3页Modern Industrial Economy and Informationization

基　　金：国家级职业教育教师教学创新团队课题研究项目:《自动化专业群课程体系构建与模块化课程开发》,课题编号为YB2020010302。

摘　　要：从电源电路、信号变换放大器、高共模抑制仪表放大器和程控增益放大器等方面介绍了系统电路的设计。本设计中的测量放大器经过多次选型、计算仿真与实践使用,能够很好地实现放大微弱信号的功能,而且其共模抑制比高,并且加入了单片机的线性控制,针对不同场景改变信号的放大倍数,可在工程实用中被广泛应用。The design of the system circuit is introduced from the power supply circuit, signal conversion amplifier, high common mode rejection instrumentation amplifier and programmable gain amplifier. The measurement amplifier in this design can realize the function of amplifying weak signals well after several times of selection, calculation simulation and practical use, and its high common mode rejection ratio, and the linear control of microcontroller is added to change the signal amplification for different scenarios, which can be widely used in engineering practice.

关 键 词：测量放大器 集成运放 单片机 放大倍数 

分 类 号：TP368.1[自动化与计算机技术—计算机系统结构]