Designs of a fire detecting and fire pre-warning system based on single chip microcomputer

The paper mainly deals with the design of hardware for an automatic fire fighting system, which aimed at closed combustible places. This system adopts single chip microcomputer with smoke sensor and temperature sensor as the detective devices. By using the single chip microcomputer, it can achieve the aim of automatic fire fighting. And, this system uses high pressured nitrogen as the fire extinguishing agent, which is economical and environment friendly. It accords with the human’s needs of environmental protection.