the name of project is earthquake detector 1 i have to know

0 9V R2 12k R8 100k R6 1k VR 10k T1 RS IC1 LM741 C1 R1 12k 150k NESSS piezo 0.22HF element BC548 R4 1M 1000 R3 4.7k buzzer LED 100uF/16V

Solution

1) circuit is for sensitive earthquake detectoion .       circuit that can sense seismic vibrations and knocks.
Ithis can be used to detect Earth quake or any vibrations in the Earth.

2)

it is an ideal device to monitor entey passage and other input related with vibration.

The circuit exploits the direct piezo electric property of the piezo element used in buzzers.

The Lead Zirconate crystals present in the piezoelement can readily store current and can release the current when the orientations of the crystals are disturbed through mechanical vibrations.

this device is very usedful at home , school, hostel where automatic alarm is needed in emergy condition of earth quake.

3)

piezo element :

The circuit is having sensor as direct piezo electric property of the piezo element used in buzzers.The Lead Zirconate crystals present in the piezoelement can readily store current and can release the current when the orientations of the crystals are disturbed through mechanical vibrations

IC1 :

it is an amplifier circuit . it will get electrical signal from piezo element and it will   amplifies the signals from the piezo element and make signal enough to give IC2 ,    the output side will give high output ,

the high output from IC1 will be used to switch on T1. When T1 conducts, trigger pin 2 of the monostable (IC2) will grounded to give 3 minutes high output.

IC 2 =   It will sense the signal given by Transistor T1, and switch on main function . this high output will be given to alarm /buzzer   with LED light blinking or continuesly ON . This high output is used to sound alarm and to light LED.

LED ; to make visible emergency condition

buzzer : to make sound of emergency condition

VR: adjusts the sensitivity of piezo element.

we can Glue the fine side of the piezo element on the floor (if used as an entry alarm) or inside a metal box (if used to bury in soil to detect earth borne vibrations).

we can put it in earth with proper protection to use as earth quake detection .

4 )

benifit : it will cork very quick ,and will become very handy saffety element.

as there are not any costly product it is very good for users and very chip solution where earthquake are frequently occure.

it will save so many life if used in office , complex, school, college, hostel.

dis advantage : small vibration will make it turn on .

even any human or living thing can make li\'l vibrate and it will operate

5 )

this device is very useful during earhquake condition if we make it more accurate and install it at proper location with good protection from un epected vibration it will work very well.

and it is dead element without any emergy earthquake but at emergincy it will become life saver .