“3.15”刚刚落下帷幕,世人又耳闻了不少因燃气泄漏而造成的诸多伤亡爆炸惨剧,为了居家环境安全,防止燃气因泄漏有毒易燃气体而造成中毒或爆炸等事故的发生,最近市场上推出了一种采用高新技术、新颖实用的系列家用燃气保安器,它可以帮助千家万户建立一个“小环保安全监控体系”。DR系列保安器选用高选择性的气敏探头,只对所监控的气体,如丁烷、一氧化碳等产生反应。其电路设计采用性能稳定的数字集成电路实现逻辑功能,并对线路进行了优化,设计了延时电路,采用抗电网干扰 “3.15” has just ended, the world has heard a lot of casualties caused by gas leak explosion explosion, in order to protect the home environment and prevent gas leakage caused by toxic or explosive poisoning or explosion accidents, the recent market Launched a series of high-tech, innovative and practical series of household gas security, it can help every household to establish a “small environmental safety monitoring system.” The DR series of safety guards use a highly selective gas sensor that responds only to gases monitored, such as butane and carbon monoxide. The circuit design uses a stable digital integrated circuit logic function, and the circuit is optimized, the design of the delay circuit, the use of anti-grid interference