Home monitoring based on GSM modems

Abstract

Control system and home monitoring remotely has become one of the most intelligent systems that are competing companies to provide all that is new in this area in terms of connecting and linking devices needed by the modern home with each other and then controlled either by mobile or GSM modem. This research addressed this idea with a focus on side of home monitoring in case the absence of parents from home pretext of work for example, where used of two (GSM) modems so that each is placed in a separate place, connecting the first (GSM) modem with a laptop to provide easy navigation and movement across the different places and distances, For difference in the voltage between the Laptop and (GSM) modem using Darlington amplifier (ULN2003). The second (GSM) modem was placed in a fixed location to simulate the presence in the children's room in the house for example, and then connect a camera and a microphone to monitor and communicate, and also has been connected to electricity switch can be controlled opening or lock it in if you feel threatened. Each (GSM) modem contains five outlets allowing connect five different devices, and also each modem contains subscriber ID card (SIM card) which enables communication across a (GSM) network and take advantage of its services. And also the modems contains (ATmega32) microcontroller, which is one of the most important features the possibility of re-programming. The whole system is controlled by a simple program was written by programming language (TC + +) and has been installed on a laptop, this allows the system to send short messages (SMS) to control the open or lock both the camera and the microphone and the securing electricity key which are conductive to the second (GSM) modem on the other end of the electronic circuit, to increase the specificity of the program interface was designed ask the user to enter a user name and password before entering the main program. Chapters of this research dealt with first, the basic concepts of the idea of research and the structure of the system, then electronic circuit design and operating software. The experiments showed the system performed well and the results are acceptable. Then research concluded with the introduction of some of the recommendations for the future.