基于STC89C52的高精度宽频带数显毫伏表的设计

设计了基于STC89C52微控制器的数显毫伏表，运用AD811、CD5406集成器件构成程控放大器，采用AD637、MAX187进行RMS—DC变换和模数转换，简化了系统设计的复杂性，提高了系统的抗干扰能力和测量精度，具有量程自动变换和超限保护及报警功能，有效地改善了系统的非线性和频率特性，可以满足1000mV以内微弱交流信号的测量需要。...

Full description

Saved in:
Bibliographic Details
Published in电子技术应用 Vol. 38; no. 7; pp. 84 - 86
Main Author 张青春
Format Journal Article
LanguageChinese
Published 淮阴工学院电子与电气工程学院,江苏淮安,223003 2012
Subjects
STC89C52
宽频带
微控制器
毫伏表
高精度
宽频带
毫伏表
高精度
STC89C52
微控制器
Online AccessGet full text
ISSN0258-7998
DOI10.3969/j.issn.0258-7998.2012.07.029

Cover

More Information
Summary:设计了基于STC89C52微控制器的数显毫伏表，运用AD811、CD5406集成器件构成程控放大器，采用AD637、MAX187进行RMS—DC变换和模数转换，简化了系统设计的复杂性，提高了系统的抗干扰能力和测量精度，具有量程自动变换和超限保护及报警功能，有效地改善了系统的非线性和频率特性，可以满足1000mV以内微弱交流信号的测量需要。
Bibliography:Microcontroller based STC89C52 digital millivohmeter, using AD811and CD5406 integrated device constitutes a pro- gram-controlled amplifier, using AD637 and MAX187 complete RMS-DC conversion and analog-digital conversion, simplified the complexity of system design, enhanced anti-interference ability and accuracy, with functions of automatic range change , overrun protection and alarm, effectively improve the system＇s nonlinear and frequency to meet the measurement needs for within 1 000 mV weak AC signal.
11-2305/TN
STC89C52; microcontroller; broadband; high-precision; millivohmeter
Zhang Qingchun （Faculty of Electronic and Electrical Engineering, Huaiyin Institute of Technology, Huaian 223003, China）
ISSN:0258-7998
DOI:10.3969/j.issn.0258-7998.2012.07.029