报告家居环境可燃气体监测系统设计.doc

报告-家居环境可燃气体监测系统设计 家居环境可燃气体监测系统设计 摘 要：本设计提出了一个基于MQ-2传感器和STC12C5604AD单片机的家居环境可燃气体监测系统的设计方案。本设计主要包括七个组成部分：电源模块、传感器电路模块、MCU控制模块、LCD显示模块、报警电路模块、串口通信模块和上位机模块。本系统的MCU采用自带ADC功能的增强型51单片机STC12C5604AD。传感器MQ-2将可燃气体浓度信息转换成电压信号，由MCU的ADC采集电压，将电压值通过换算转换成对应的浓度值用于LCD显示，并通过串口将浓度值发送给上位机。上位机部分实现对可燃气体浓度曲线的动态显示，报警浓度门限设置以及对报警装置的控制等功能。 关键词：可燃气体监测系统，MQ-2，STC12C5604AD，上位机 Abstract：This design puts forward a scheme of combustible gas monitor based on sensor of MQ-2 and STC12C5604AD microcontroller. This design mainly includes seven parts: power supply module, sensor module, MCU control module, LCD module, alarm circuit module, serial port communication module and a PC module. The system USES the MCU of STC12C5604AD which include ADC function. Sensor MQ-2 will convert flammable gas concentration information into voltage signal, Using the ADC to collect the voltage,The MCU convert the voltage value into the corresponding concentration values for LCD display, And sent the concentration values to PC through the serial port. The PC realize combustible gas concentration curve dynamic display function, alarm value setting and the alarm device control and other functions. Keywords：Combustible gas monitoring system, MQ-2, STC12C5604AD, PC 目录 1前言 ......................................................................................................................................... 1 2总体方案设计 ......................................................................................................................... 2 2.1设计方案比较 ................................................................................................................... 2 2.2方案论证 ........................................................................................................................... 3 2.3方案选择 ........................................................................................................................... 3 3单元模块设计 ...................................................................................