【作者】 罗莹；

【导师】 王琳基；

【作者基本信息】 福建农林大学 ， 农业电气化与自动化， 2012， 硕士

【摘要】 煤气已成为人们生活中必不可少的能源之一，但是煤气泄漏事故时有发生，给人们家庭生活造成很多隐患，所以如何防止煤气中毒和爆炸事故的发生已成为人们迫切需要解决的问题。目前市场上家庭煤气报警器种类繁多，但却各有不足之处。本设计是一款新型的家庭煤气泄漏检测报警及控制装置。该装置将煤气泄漏程度分为轻度泄漏、中度泄漏和严重泄漏三个等级，根据煤气泄漏的等级自动做出相应的处理，无需经过单片机的A/D、D/A转换和复杂的数据处理，提高运行的速度和可靠性。本设计将电话通信技术引入报警系统，采用芯片HT9200A进行自动拨号，使系统可通过固定电话线向外界报警，避免用户不在家时发生煤气泄漏事故。采取模块化的设计思想，该装置主要划分为六部分：煤气泄漏检测部分、电话自动拨号报警部分、控制输出部分、电源部分、人机接口和主控制芯片。针对以上六个部分，本文将详细阐述各部分的软硬件设计，核心芯片的原理和外围电路，芯片与芯片之间的连接电路以及程序设计方法。本文在最后对整个设计作出总结，并提出不足之处。更多还原

【Abstract】 Coal gas has become one of the essential energy in people’s lives. But coal gasleakage incidents often happen, it brings a lot of hidden dangers to people’s family life.How to prevent coal gas poisoning and explosion accidents has became the urgentproblem to be solved. Currently, many different types of household gas alarm are soldon the market, but all of them have shortcomings. So we design a new type of thedevices of detection, alarm and control for household gas leakage, the devices put thedegree of gas leakage divide into three levels, there are light leakage, mild leakageand severe leakage, automatically make the appropriate reaction according to the levelof gas leakage, without going through the single-chip A/D, D/A conversion andcomplex data processing to improve the running speed and reliability.We use network communication technology in the alarm devices. This devicescan give an alarm to the outside world through a fixed telephone line, avoid resultingin rise to serious accidents when the user is not at home.This devices take the concept of modular design, mainly is divide into six partswhich include gas leakage detection module, automatic telephone dial-up alarmmodule, power supply module, Human-machine interface module and the maincontrol module. According to the six parts above, this article describes the design ofhardware and software in detail, the principle of the core chip and chip peripheralcircuits, the connection between the chip and the chip circuitry and programmingmethod.In the final, the article makes a summary of this design and puts forward theshortcomings.更多还原