RF Based House Security System Projects

RF Based House Security System Projects

Security has been a major issue where crime is increasing and everybody wants to take proper measures to prevent intrusion. In addition there was a need to automatic control so that user can take advantage of the technological advancement. So, security today needs to make use of the latest available technological components.

In this project, we are designing two or more transmitters placed at different locations and the Receiver is placed at the location where we need the desired result. An LDR circuit is placed for the day/night sensing. IR sensor is used for detecting the person entry only in the night times with the help of LDR circuit.

             Here in this project transmitter and a receiver modules are designed. Transmitter is placed at location where security is needed and the receiver is placed inside the House. Whenever a person enters in the night time that information is sent to the House where security is needed, through the RF receiver and is displayed through the 16*2 alphanumeric LCD. A buzzer is placed inside the House, which acts like a speaker.

Advanced RF communication is used for signaling. But the important thing to be noted here is that there is no connection between the Transmitter and Receiver section. Radio frequency (RF signal of 434MHz) makes this task very simple.

The programming language used for developing the software to the microcontroller is Embedded/Assembly. The KEIL cross compiler is used to edit, compile and debug this program. Here in our application we are using AT89C51 microcontroller which is Flash Programmable IC.AT represents the Atmel Corporation represents CMOS technology is used for designing the IC.

     Software used:

1)      KEIL C

2)      PROTEUS.

Hardware Used:

• AT89C51 Microcontroller
•  LDR Circuit
•  Voltage regulator 7805.
• Diode IN4007
•  RLP-434
•  TLP-434
•  HT12E
•  HT12D
•  RF Antenna
•  16*2 LCD
•  Buzzer