Smart Vibration Sensor (Earth Quack Detector)

*About Author Of This Projects

• Name : Krishnarajsinh jadav
• Email : Krishnaraj.jadav@gmail.com

*Introduction of circuit

This Project senses the minimum effective vibration produce due to the Earth quack and turn on the emergency alarm.

This circuit senses the minimum effective vibration by piezoelectric sensor and primary FET transistor amplify the signal and send to LM555 I.C. as trigger pulse.The LM555 i.c. supply uniform d.c. voltage to sound i.c. UM3561 and this i.c. generate pulsating signal this signal then given to speaker to produce sound according to signal.

*What is Sensor?

It is a device for sensing a physical variable of a physical system or an environment.

*Quantities measure by Sensors

Mechanical quantities: displacement, rotation velocity, acceleration, pressure, force/torque.

Thermal quantities: temperature, heat.

Electromagnetic quantities: voltage, current, frequency, magnetism.

Chemical quantities: moisture, pH value

*What is the need of Smart Vibration Sensor?

For the safety purpose

As a earth quack detector

For house security

In heavy loading machine

As a door bell(future application)

*Working of Project

The circuit works on 9V DC supply.In this vibration sensor alarm circuit initially, when power switch S1 is flipped to "on" position, power indicator LED1 lights up immediately. As soon as vibration is detected, MOSFET - T1 is fired by the positive going pulse output from the vibration sensing mechanism built around Piezoelectric-ceramic wafer and associated components. Control input pins 2 and 6 of IC1 latch are grounded.

As a result Output pin 3 of IC1 now goes high. The positive supply from output pin 3 of IC1 is extended to tone siren generator UM3561 (IC2) through R5, D1 and R6. Components R6 and ZD1 stabilize the input power supply of IC2 to around 3.3V. Output signals from IC2 are amplified by Darling-ton-pair transistors T2 and T3 to produce alert tone (police siren sound) via loudspeaker.Reset switch S1 can be used to switch off the alarm sound by resetting the circuit. A relay can also be connected at the output socket (SOC1) of the circuit to emergency sirens and Fence electrification units.

*I.C. used in this project

(1)LM555 I.C
Description

The LM555 is a highly stable device for generating accurate time delays or oscillation.Additional terminals are provided for triggering or resetting if desired.In the time delay mode of operation, the time is precisely controlled by one external resistor and capacitor.For a stable operation as an oscillator, the free running frequency and duty cycle are accurately controlled with two external resistors and one capacitor.

(2)UM3561 I.C
Description

UM3561 is a low-cost, low-power CMOS LSI designed for use in alarm and toy applications.Since the integrated circuit includes oscillator and selector circuits, a compact sound module can be constructed with only a few additional components.The M3561 contains a programmed mask ROM to simulate siren sound.

 

 

Download project Fill this form to download full project with Report & Videos. The project will send to your Email soon Thank you..
Project Name
Email

Powered by Krishnaraj Jadav