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PIR based Memory & Power Saving

 

INTRODUCTION:

 

As in the modern world everything is going automatic we have built a system which will automatically sense Power failure, Fire and the entry of an unwanted person in the absence of the owner of house. We have deployed a microcontroller which is used to sense the signals from all the sensors which are placed in the house for sensing different type of failures or security conditions. Apart from this an audio visual alarm is also planted in the house which will get activated at that time. 

                                  There are two sets of sensors: one of which sense the entry or exit of a person, when a person enters in the house through the door then a PIR sensor (which act as a sensor for sensing the entry or exit person) will get activated and give a low signal to microcontroller which is sensed by the controller. Then controller in turn the light and also triggers the switch of web cam connected to pc. And when any person exit from home then the light and web cam automatically turned off.

 

                               The sensing of entry and exit of persons is done with the help of PIR. This change in output is sensed by the microcontroller and accordingly it activates the audio visual alarm and also captures the person.

 

 

 

 

PIR:-  PIR is an passive infrared sensor.

It always receives the IR rays that are usually emitting from the  human body. Whenever any such type of rays will be received by the sensor, it relays the signal to the amplifier .NPN transistor is used as an amplifier. The signal from the amplifier is forwarded to the MCU. This MCU will alert the owner or concerned person either by alarm.

 

 

 

 

 

Component List

 

 COST

S.No.

Item

Quantity

Rate/Unit

1.      

MCU 89C051

0

80

2.      

PIR sensor

1

250

3.      

IC817

1

15

4.      

Push to On Sw

3

12

5.      

SOLDERING WIRE

1

25

6.      

SOLDERING IRON

1

120

7.      

FLUX

1

10

8.      

CONNECTING WIRE

1

50

9.      

TR548

2

2

10.  

TR558

0

2

11.  

RESISTENCES

20

0.5

12.  

CAPACITORS

 

 

13.  

1000f

2

10

14.  

100f

1

5

15.  

470f

4

5

16.  

DIODES

8

1

17.  

LED

8

1

18.  

Crystal 12MHz

2

25

19.  

IC BASE

3

5

20.  

IF set

120

1

21.  

IC 7805 Volt. Reg

2

15

22.  

TRANSFORMER 9 V

1

30

23.  

SOCKETS

3

10

24.  

RELAY 9V

3

25

25.  

MILER CAP

5

3

26.  

CRYSTAL 3.579545

2

20

27.  

IC136

2

15

28.  

HOLDER

2

10

29.  

PLY BOARD

1

100

30.  

TAPE ROLL

1

10

31.  

Copper Clad Board

1

100

32.  

FeCl3

1

100

33.  

ZENER

0

3

34.  

Screws/bolt

2

2

35.  

Batteries

1

15

 

TOTAL COST

 

 

 

TOOLS/SOFTWARES /COMPONENTS REQUIRED

 

        KEIL Vision2 Software for programming of Microcontroller.

        I.C Programmer and Software for the burning of the Microcontroller.

        Web cam.

        PIR sensor and fire sensor.

        Components for designing of the embedded part.

        Soldering kit.

        Measuring Instruments (Multi-meter), etc.

 

Features:

        PIR sensors

        8051 controller

 

 

Advantages:

        Projects   Components cost is less

        It helps in low cost security camera

        Easy to make otherwise security systems

        Flexible Because of Microcontroller its easy to modify

        Portable-  Its small in size and can be implement

 

 

 

 

 

APPLICATIONS      

 

        Can be used to implement complete automation and security of home.

        Can be used at almost all government and non-government organizations.

        Can be used to implement power management in cctv operations.

 

 

 

 

Bibliography:

 

www.atmel.com

 

www.8051projects.com