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2005 年第 9 期信息技术
中图分类号:TP212 文献标识码:A 文章编号:1009 - 2552(2005) 09 - 0149 - 03
基于 AVR 单片机的多点数字温度检测系统设计
葛治军
(兰州交通大学光电技术与智能控制教育部重点实验室, 兰州 730070)
摘要: 温度检测系统已应用于很多的领域, 在传统的温度检测系统中, 一般选用的是模拟式
温度传感器。当系统进行多点温度测量时, 所用模拟温度传感器增多, 使系统变得复杂。随着
传感器技术的发展, 出现数字式温度传感器, 有效地解决了模拟式温度传感器外围电路复杂及
抗干扰能力差的弊病, 降低了对系统的要求。本系统采用 ATmega128 单片机和 AD7416 数字温度
传感器能够快速有效地实现多点温度测量, 且系统结构简单, 当测控对象越多越显示其优越性。
关键词: AD7416 数字温度传感器; ATmega128 单片机; I2 C 总线; 系统设计
Design of multipoint digital temperature measuring system
based on AVR single - chip puter
GE Zhi jun
( Key Laboratory of Opto - electronic Technology and Intelligent Control Ministry of Education,
Lanzhou Jiaotong University ,Lanzhou ,730070 ,China)
Abstract : Temperature measuring system is applied to many fields. In traditional temperature measuring sys
tem ,commonly analog temperature sensor is choosed. When system detects multiplepoint temperature and the
number of analog sensor is increased ,the system plex. As sensor technology develops ,digital tempera
ture sensor appears , it availably solves peripheral plexity of anolog temprature sensor and faint anti -
jamming, and reduces request for system. The system adopts Atmega128 singling chip puter and
AD7416 digital temperature sensor and can availably achieve temperature measuring ,furthermore construction
of system is simple. When the detected object i