Design for the Combustible Gas Alarm System
Abstract: More and more liquid & fuel gas have been using in our daily lives. And most of these gas are harmful, explosive ,more hidden troubles .For instance :if the leak out gas without deal timely, it would be a catastrophe to the related person even their neighbors. My design contains the fuel gas warm circuit function and principle of operation .The key device in my design is the gas transducer which can detect the fuel gas by conductivity meter differentiating ,and this conductivity meter differentiating can control the multivibrator and the positive feedback oscillator work intermittently. After this action the warm circuit can alert timely when detected the fuel gas leak out.
Key words: Combustible gas; Alarm; Semiconductor sensors; Oscillator
