DOOR LOCKING SECURITY SYSTEM UING GSM
ABSTRACT
The main aim of this project and implimentation is to provide security at homes, offices etc. The system automatically locks the door as soon as it receives a predefined message from the user.
This project and implimentation uses the wireless communication, GSM. To receive the messages from the user mobile, we need a GSM modem. This modem will be interfaced to the microcontroller through serial interface. A modem provides the communication interface. It transports device protocols transparently over the network through a serial interface. A GSM modem is a wireless modem that works with a GSM wireless network. A wireless modem behaves like a dial-up modem. The main difference between them is that a dial-up modem sends and receives data through a fixed telephone line while a wireless modem sends and receives data through radio waves.
If the user is somewhere far from the main door and he wants to close the main door right from the place he is standing, he has to send a predefined message to the modem. The controlling unit will be fixed at the main door. The controlling unit contains the microcontroller and the GSM modem interfaced to it. The microcontroller continuously checks whether it has received any message from the modem.
When the user sends the predefined message to the modem, the modem receives the message and intimates the same to the microcontroller. The microcontroller retrieves this message from the modem by issuing certain AT and T commands to the modem. Thus, after receiving the message from the modem, the microcontroller automatically closes the door by rotating the stepper motor fixed to the door. This will be done perfectly without the involvement of any human.
ABSTRACT
The main aim of this project and implimentation is to provide security at homes, offices etc. The system automatically locks the door as soon as it receives a predefined message from the user.
This project and implimentation uses the wireless communication, GSM. To receive the messages from the user mobile, we need a GSM modem. This modem will be interfaced to the microcontroller through serial interface. A modem provides the communication interface. It transports device protocols transparently over the network through a serial interface. A GSM modem is a wireless modem that works with a GSM wireless network. A wireless modem behaves like a dial-up modem. The main difference between them is that a dial-up modem sends and receives data through a fixed telephone line while a wireless modem sends and receives data through radio waves.
If the user is somewhere far from the main door and he wants to close the main door right from the place he is standing, he has to send a predefined message to the modem. The controlling unit will be fixed at the main door. The controlling unit contains the microcontroller and the GSM modem interfaced to it. The microcontroller continuously checks whether it has received any message from the modem.
When the user sends the predefined message to the modem, the modem receives the message and intimates the same to the microcontroller. The microcontroller retrieves this message from the modem by issuing certain AT and T commands to the modem. Thus, after receiving the message from the modem, the microcontroller automatically closes the door by rotating the stepper motor fixed to the door. This will be done perfectly without the involvement of any human.