文档介绍：基于单片机89C51的光电式测温器的研制
孙建生
(吉首大学物理科学与信息工程学院,湖南吉首 416000)
摘要
本文设计一种由单片机AT89C51、双音频拨号译码电路、电力线载波收发电路、语音电路、光敏电阻等组成的测温报警系统。实验证明,该系统报警快速、准确。由于该系统电路简单,而且利用的是电力线传输信号,不需要线路投资,节省了报警系统的成本。本文对其硬件电路和软件流程做了较为详细的阐述。
关键词:电阻式传感器;单片机;测温报警电路
The Research on the Resistance Fire Detectors Based
on 89C51 Single Chip puter
Sun Jiansheng
(College of Physics Science and Information Engineering, Jishou University,Jishou Hunan 416000)
Abstract
The paper design a fire alarm system which is formed by single chip puter AT89C51, double audio dial decoding circuits, power line carrier receiving circuits, voice circuits, and thermistor, and so on. It is proved by experiments that the system was faster and more accurate. The system circuit was simple; adopting the power lines for transmission signal lines, which were not required investment for lines. And the cost was declined. All of its hardware circuit and software flow were detailed elaborately.
Key words: resistance sensor; single chip puter; alarm circuit
目录
第一章总体方案设计.......................................。............1
绪论.............................................................1
研究火灾报警器的意义.........................................1
火灾报警器的工作特点.........................................1
电力线通信简介...............................................1
传感器简介...................................................2
.....................................................3
..............................................3
.................................................4
第二章硬件电路设计...................................。................5
探测电路设计.....................................................5
热敏电阻简介.................................................5
探测电路总体设计.............................................6
拨号报警电路设计..............................................6
拨号报警电路主要元器件介绍...................................6
拨号报警总体电路设计....................