00-110903-0010-基于MAX134的数字万用表设计论文

基于MAX134的数字万用表设计论文

摘要

本文全面、深入、系统地介绍了4 3/4位智能数字万用表的系统设计与研究。设计中采用了美国MAXIM公司生产的专配万用表芯片MAX134，。整个系统结构由MAX134外加一些外围元件构成，驱动LED数码显示。文章主要介绍了MAX134的性能特点、内部结构、数字接口、输入输出数据及一些功能和原理。整个设计包括硬件电路设计及软件设计。硬件电路设计包括处理器、外部设备元件的选择及电路设计，而软件设计则主要是实现仪表的各功能的控制。 关键词： 数字万用表； 单片机； MAX134；

This design introduces the design and research for 4 3/4 Digit DMM Circuit integrally and systemically. The design uses the special DMM chip MAX134 from MAXIM Company as the central IC, which acts as A/D converter, and matches the from Intel Company. In this design, the whole system instructure is constituted by MAX134 and some peripheral component, then connect with the drive the LED figures. The article mainly introduces the performance Characteristic of MAX134, inside structure, digital interface, input and output data, and some main functions. The design of intelligent digital multimeter consists of hardware circuit and software circuit. Hardware circuitelesign includes the choice of Microcontroller, the design of circuit and the choice of outside equipment etc. After the hardware circuit fixed, the main function of the instrument will be realized by the software.

Key words: The digital Multimeter； The Microprocessor.； MAX134；