摘 要随着“信息时代”的到来，作为猎取信息的手段——传感器技术得到了显著的进步，其应用领域越来越广泛，对其要求越来越高，需求越来越迫切。传感器技术已成为衡量一个国家科学技术进展水平的重要标志之一。因此，了解并掌握各类传感器的基本结构、工作原理与特性是非常重要的。 为了提高对传感器的认识和了解，尤其是对气体传感器的深化讨论以与其用法与用途，基于有用、广泛和典型的原则而设计了本系统。本文利用单片机结合传感器技术而开发设计了这一气体监控系统。 本论文以电阻式气体传感器和单片机技术为核心并与其他电子技术相结合， 设计出一种技术水平较好的气体报警器。其中选用TGS813型半导体可燃气体敏感元件气体传感器实现气体的检测，具有灵敏度高、响应快、抗干扰能力强等优点，而且价格低廉，使用寿命长。选用的AT89C51单片机，其整合了A/D转换、硬件乘法器、硬件脉宽调制器等资源，具有高速、低功耗、超强抗干扰等优点，是目前同类技术中性价比较高的产品。以AT89C51单片机和TGS813型半导体电阻式气体传感器为核心设计的气体报警器可实现声光报警、故障自诊断、浓度显示、报警限设置、延时报警与与上位机串口通信等功能。是一种结构简单、性能 稳定、使用方便、价格低廉、智能化的气体报警器。具有一定的有用价值。关键词：气体浓度， AT89C51，传感器AbstractWhile “information age” the arrival, obtained the remarkable progress as the gain information method - - sensor technology, its application domain is more and more widespread, is more and more high to its request, the demand is more and more urgent.The sensor technology has become weighs one of national science and technology level of development important symbols.Therefore, understood and grasps each kind of sensor the basic structure, the principle of work and the characteristic is extremely important.In order to enhance to the sensor understanding and the understanding, in particular to the smog sensor thorough research as well as its usage and the use, based on practical, widespread and the model principle has designed this system.This article used the monoli...
