Design and realization of wireless technologies for alarm systems

Abstract

This paper presents important factors for designing wireless systems as well as two types of wireless communications for alarm systems with short-range radio for the industrial (SIGMASPACE) and the residential (SiRoute) markets. Those systems have been designed to fulfill the different market requirements, especially regarding reaction times in case of alarms and disturbances and batteries lifetime. The SIGMASPACE is designed as a hybrid system including many gateways on the wired communication bus and master slave communication fulfilling the EN54 standards. The SiRoute system is based on a multi-hop mesh network that allows low battery power consumption, high ranges in buildings independently of structures and reaction times according to EN 50131-1. The wireless communication is performed in an exclusive frequency band for short-range devices by 868 MHz with regulated effective radiated powers and transmission duration (duty cycle).