Narrow Results

This paper has analyzed the situation of existent fire alarm systems and has proposed a new method of connecting local fire alarm controllers to build a much larger and more powerful system, with GSM (Global System for Mobile Communications) as the communication medium. All these local fire alarm controllers, which work as slave stations, and a central monitor, which works as a master station, are incorporated in the GSM network. Information is transmitted between the master station and slave stations through SMS (Short Message Service). The general structure of the system is presented in this paper. It is a three-hierarchy model and it consists of three subsystems: detecting and controlling subsystem, communication subsystem and central monitor subsystem. The function of each subsystem is explained and the hardware and software details of the communication subsystem are described.