ALARM SYSTEM CIRCUIT DIAGRAM

The Push Button Alarm system is the system that is currently working where its mode of Operation requires the Push Button placed near the Door at the Entrance of the Building as the sensing input element. When Pushed by the person arrived at the entrance of the Building it generates the signal that alert the occupant inside the building by turning ON the speaker.

Existing system.

The regular method existing to alert the House owner for arrival of someone at the entrance at their Home is through Push button alarm system. The operation of the Push button alarm system requires a Push button to be placed near a door to a Building’s entrance for a visitor knocking on Door.

Push Button alarm system circuit diagram.

The Push Button Alarm system facilitate the Prank knocking on door behavior.

The mode of operation for Push Button Alarm system in Figure 2.1 starts at the Push button as the sensing input signal element. When a person gently Push the Button it will generate the signal that will alert the occupant on the arrival of that person at the House’s entrance Door by turning ON the speaker placed inside the House. The Prank knocking on Door occurs due to improper way of operating it.

Doorbell Alarm System Using IR sensor circuit diagram.

The Doorbell Alarm System use IR Sensor as shown

The mode of operation for Doorbell Alarm System Using IR Sensor in Figure 2.2 is that, when someone is at the door the speaker turns whereas the IR LED light will be blocked to fall on photodiode, the Speaker will be OFF when there is no person at the entrance Door of the building the LED light will be incident on the Photodiode. Prank knocking on Door can be used and it is due to improper way of Operating of the system.

Carpet Doorbell Alarm System circuit diagram.

The Carpet Doorbell Alarm System, The system where the Prank knocking on Door can be used.

whenever the pressure sensor element is gently tapped by a person arrives at the Entrance Door the input signal will be generated that will turn ON the speaker to alert on the arrival of that person, whereas Mosfet (Q1) is fired by the electric pulse from the sensor and IC is enabled by the output of the (Q1) as a result the piezo sound start to beep for a short period of time set by the in circuit values of resistor (R1) and capacitor (C1).The Prank Knocking on Door can be used in this system due to improper way of operating the system.