DESIGN OF WIRELESS HOME SECURITY ALARM SYSTEM

Abstract

Security is said to have started right from the existence of mankind. This therefore makes it an important aspect of human life. According to history the first known lock was made in Egypt. This invention has been built upon since centuries. Now sophisticated security systems have been made and due to the rate at which technology grows, wireless systems are now used in security systems. The proposed design for this research is a wireless based security system. The objectives are to design the security system; to use variations in received signal strength indicator value and  to find intrusion activity at home. To make this work, literature of other researchers were reviewed and knowledge was acquired from this literature which helped in the design. The components chosen for the design work were selected based on certain conditions; its reliability and cost, effectiveness and accuracy and also its availability on the market. The sensor was selected based on the temperature range required for our design, and the distance with which we want it to cover. From the research conducted, the sensor used in the design circuit is an infrared detector which uses temperature range of   20⁰C to 70⁰C to detect intrusion in an environment; hence we conclude that the difference in received signal of 20⁰C to 40⁰C   of human temperature and 10⁰C to 50⁰C of animal temperature is used to detect intrusion.