【摘要】 目前,随着天然气使用的普及,用于家庭燃气检测报警的装置已经存在,但是家庭中使用的燃气报警器普遍存在浓度测量灵敏度不够,以及对烟雾和燃气的区分辨别不够灵敏等问题。根据现有技术的不足,设计用MQ-4气体传感器来检测气体,并用单片机控制装置,能够保证检测的灵敏性,并随时显示室内燃气浓度,以便人们观察,并且可通过本地区实际情况调节燃气报警的预设值。该设计大大提高了人们在使用天然气时的安全性。更多还原

【Abstract】 At present, with the popularization of natural gas used, there are many devices used for the detection and alarm of domestic gas. But the gas alarm used in the home is generally not sensitive enough, and the discrimination between smoke and gas is not sensitive enough. According to the shortcomings of the prior art, the MQ-4 gas sensor is designed to detect the gas, and the singlechip microcomputer control device is used to ensure the sensitivity of the detection, and the indoor gas concentration can be displayed at any time, so that people can observe it. The preset value of gas alarm can be adjusted by the actual situation in this area.The safety is greatly improved.更多还原