GSM Home Security Alarm System with Arduino ~ by Manuj Rajput This project deals with the design & development of a theft control system for home, which is being used to prevent/control any theft attempt. The developed system makes use of an embedded system (comprises an open hardware microcontroller and a gsm modem) based on Global System for Mobile communication (GSM) technology. The designed & developed system can be installed in the home. An interfacing intrusion-detector unit is also connected to the microcontroller-based security system. In case of an intrusion attempt, a warning message is being transmitted by the system (as an sms) to the owner’s mobile phone, or to any pre-configured mobile phone number for further processing. The security system comprises of an Arduino Uno microcontroller and a standard SIM900A based GSM/GPRS modem. The whole system can be powered from any 12VDC/2A power supply unit/battery. Working of the system is very simple and self-explanatory. When input power is applied to the system, the system goes into standby mode. However, when the terminals of connector J2 is short circuited, the preprogrammed warning message is automatically transmitted to the concerened mobile number. You can connect any intrusion detection unit (such as a light fence or a motion sensor) to the input connector J2. Note that an active-low (L) at pin 1 of connector J2 triggers the security system. Further, an optional “call – alert” facility is added to the security system, which will initiate a telephone call when push button switch S2 is activated by the user (or by another electronic module). After the “call” key (S2) operation, the call can be aborted by depressing the second push button switch S3 – the “end” key. This option can be used to make a “missed call” alert, incase of an intrusion attempt. The circuit is highly-flexible so that you can use any SIM900A modem (and ofcourse any Arduino Uno board) of your choice. Carefully read the modem documentation before construction to make the task sweet and simple. If you are a newcomer in Arduino world, it is recommended to refer related tutorials and projects details .please comment
Posted on: Sun, 12 Oct 2014 06:22:32 +0000
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