自动电阻测试仪系统设计  

On the Design of Automatic Resistance Measuring Instrument System

作　　者：董峰 郭毅飞 荆科科 

机构地区：[1]郑州城市职业学院,河南郑州452370

出　　处：《科教文汇》2012年第36期93-93,97,共2页Journal of Science and Education

摘　　要：本设计是以AT89C51单片机为核心,以TLC1549、5V继电器、液晶显示器、稳压电源7805为主要外围元部件构成的自动电阻测试装置。该装置通过5V继电器配合TLC1549进行A/D转换,实现多档位电阻的测量。该系统能够通过多路选择模拟开关实现100欧、1k欧、10k欧三档量程自动转换功能。With AT89C51 chip microcomputer as the core, this paper consists of the following exterior parts, such as TLC1549, 5V electric relay, LCD and constant voltage power supply, which constructs the automatic resistance measuring instrument. This instrument, companied by TLC1549, realizes A/D transformation through 5V electric relay, so as to actualize the t of multi-gear resistance. This instrument can realize automatic shift among 100Ohm, 1KOhm, and 10KOhm.

关 键 词：单片机 TLC1549 5V继电器 稳压电源7805 

分 类 号：TM934.1[电气工程—电力电子与电力传动]