vishnuuuuu ppt main

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Presented by

VISHNU.G

S7 ME ,Roll No:28

YIT

Guided by,

VISHNU.S.BAsst professor

Dept of Mechanical


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CONTENTSINTRODUCTION

THE EXISTING VEHICLE SAFETY SYSTEM

DESCRIPTION OF EXISTING SYSTEM

CAUSE OF ROAD ACCIDENTS

OPERATION OF MEMS

PROPOSED ADVANCED SYSTEM

MEMS ACCELEROMETER

STEERING WHEEL GRIP SENSOR

BREATH ANALYZERS

THE ACCIDENT SCENARIO OF PROPOSED SYSTEM

COMPARISON BETWEEN EXISTING AND PROPOSEDSYSTEMS

PRESENT AND FUTURE APPLICATION OF MEMS

CONCLUSION

REFERENCE


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INTRODUCTIONIntegration of electrical devices and mechanical

structures under micro meter scale.

It is a portfolio of techniques and processes todesign and create miniature systems.

It is at its developing stage- main application are

in automobile and medical field. Example- 1. Air bag safety system

2. Pace makers etc..

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THE EXISTING VEHICLE SAFETY

SYSTEM

ABS(Anti-lock breaking system)

EBD(electronic brake-force distribution)

SRS airbags(supplemental restrain system airbags)

IMMOBILISER

PARKING SENSOR

CRUISE CONTROL

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DESCRIPTION OF EXISTING SYSTEM

The heart of the system is themicrocontroller which access all data.

To convert output of sensor to electricalform we use a transducer.

The analogue data is converted into digitalform using ADC.

The only limitation is that none of thesesensors detects the driver`s misbehaviour.

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CAUSES OF ROAD ACCIDENTS

0

2

4

6

810

12

14

ALCHOHOL OVERTAKING OVERSPEED DRIVER'SNEGLIGENCE

Series 3

Series 2

Series 1

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INFERENCE ON THE SURVEY

RESULTS OBTAINED

Most number of accidents take place due tothe drivers negligence.

A person dies in a crash every 11 minutes.Misbehaviour of the driver cannot be

overruled.

Alcohol consumption before and at the timeof driving cannot be suppressed actively.

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OPERATION OF MEMS

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MEMSinertialsensors

ROTATION

TILT

SHOCK

VIBRATION

ACCELERATION


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Operation of MEMSMicro machined accelerometer is used to measure

the axis of the plane.

The axis in which the vehicle is positioned isdetermined and locked by microcontroller.

If any displacement occurs the microcontroller

triggers the alarm.If impact detected it records GPS coordinates

speed count and impact direction.

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PROPOSED ADVANCED SYSTEM

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MICRO-CONTROL

LER

KEYPAD

ALCHL.SENSOR

TEMP.SENSOR

STEERINGWHEELSENSOR

ACCLRTN.

SENSOR

MOTORDRIVER

M

MEMS

ACCELEROMETER

LCD

BUZZER

GSMMODEM


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MEMS ACCELEROMETER

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STEERING WHEEL GRIP SENSOR

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STEERING WHEEL GRIP SENSOR The grip sensor is used to determine the drivers

condition

The sensor is composed of poly-vinylidenefluoride film combined with piezo-resisitivematerial.

The temperature sensors are also equipped within

the steering wheel.

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BREATH ANALYZERS

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Used to detect alcohol content in drivers

breath.If percentage is crossed over a safe

limit(0.15)

the ABS system is activated and the ownerwill be alerted via a GSM network,

Effective in cases if public transport where

the misbehaviour of driver can be overruled.The sensitivity is limited to drivers position.

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ADVANTAGES OF PROPOSED SYSTEM

Provides high level safety to human life.

Suitable for Indian driving conditions.

Easy retrieval of data for the cause ofaccidents through a permanent storagesystem.

Low cost and less complex system forinstallation and application.

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THE ACCIDENT SCENARIO OF PROPOSED SYSTEM

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IMPACT

Y/N

IF

Y

GPSSPEE

D DIRECTION

IF

ACHL.IF EYEBLINK

GPSCOORDINATED,SPEED,DIRECTION,ALCHOHOL&

EYE BLINK

DATABA

SESM

S

SEND

VIA


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COMPARISON BETWEEN EXISTING AND

PROPOSED SYSTEM

EXISTING SYSTEM PROPOSED SYSTEM

Drinking while driving cannot beoverruled.

It is possible to overrule drinkingwhile driving.

Is more promoted on private

transports.

Is more effective in public

transports.

The passenger has no safety. The passenger is safe in thevehicle equipped with thissystem.

The drivers misbehaviour cannotbe overruled.

The drivers misbehaviour can beoverruled.

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PRESENT AND FUTURE APPLICATION OF MEMS

Automotive safety, braking and suspension systems

Electromechanical signal processing

Distributed control of aerodynamic and hydrodynamicsystems

Integrated fluidic systems for miniature propellantand combustion control

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Reference: [1] P.BHUMKAR, V.V.DEOTRE, R.V.BABAR-Intelligent

Car System for Accident Prevention using ARM-7.International Science Journal-2012.

[2] ZUTAO ZHANG, JIASHU ZHANG, A Novel VehicleSafety Model: Vehicle speed Controller under DriverFatigue, IJCSNS International Journal of ComputerScience and Network Security, VOL.9 No.1, January 2009

[3] DAWEI E.XIAOBIN ZHAI, Design AndImplementation Of Remote Elevator Monitoring SystemBased On PRsAnd Embedded Technology. IEEE-2010

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