Design And Simulation Of Advanced Emergency Brake System For Commercial Truck Vehicles (Isuzu Truck)

Abstract

Researches On The National High Way Traffic Safety Administration Determined That Nowadays Car Accidents Are Mostly Caused By A Delay Of The Driver To Apply The Brake At Desired Time. This Thesis Was Aimed To Design An Automatically Controlled Brake System And Auxiliary Brake By Using A Different Programming And Modeling Software, As Well As Develop A Prototype That Enables Collision Avoidance Of A Commercial Vehicle Such As Isuzu Truck. This Thesis Work Was Majorly Focused On Design And Simulation Of An Advanced Emergency Braking System For Head-On Collision Avoidance With The Help Of Electro Mechanical Control System And Newly Designed Auxiliary Brake Systems. The Main Advantage Of This Thesis Work Is To Avoid Occurrence Of Accident Or Collision At Emergency Time By Reducing Stopping Distance And Increasing Braking Force And Efficiency Of The Truck. Reduction Of The Reaction Distance Of The Truck By Integrating Sensing, Controlling And Actuating Unit Were Done With The Use Of Electro Mechanical Control System So That The Brake Is Applied Automatically. Detection Of The Existence Of An Obstacle And Measurement Of The Speed Of The Truck Were Done With The Use Of Ultrasonic Sensors And Infrared Sensors To Detect The Existence Of An Obstacle And To Measure Speed Of The Truck; Then Measured Data Was Sent To The Controller Unit. The Data From The Sensors Were Received By The Application Of The Arduino Uno Device Which Was Used As Controller Unit. This Enabled Control Of All Activities Of Braking At Emergency Time By Giving Desired Command To The Actuators Based On Detection Pulse Information And Preprogrammed Data. Conversion Of Electrical Signal Of Controller To Physical Actuation Were Done By Employing Different Types Of Actuators Such As Relay Switch, Pneumatic Solenoid Valve, Pneumatic Cylinder, Lcd Display, Led, And Alert Horn. To Increase Braking Force And Braking Efficiency Of Truck At Emergency Time Two Auxiliary Brake Systems (I.E. Electromagnetic Brake System And Automatic Wind Deflector) Were Used In This Study. Generation Of The Magnetic Force And Retardation Force Against Rotating Propeller Shaft Were Possible With The Activation Of Electromagnetic Brake System Which Is One Of The Auxiliary Brake Systems. Reduction Of The Effect Of Aerodynamic Drag Force On A Truck By Giving Aerodynamic Effective Shape And Its Use As Brake At Emergency Time Were Possible With The Application Of Automatic Wind Deflector. The Reduction Was Achieved By Changing The Angle Of Inclination From 300To 900 To Increase Frontal Area Of The Truck So That Drag Force Was Used As Brake Force Through Automatically Actuated Pneumatic Cylinder; As A Result It Was Found That Applying This Newly Designed Brake System The Stopping Distance Of The Truck Was Reduced From 112 M To 66 M And Braking Force And Braking Efficiency Of Truck Increased From 75,460 N To 95,710 N And 68.6 % To 88.8% Respectively. In Conclusion Inclusion Of These Newly Designed Components To The Case Vehicle Isuzu Truck Will Be Of Paramount Importance For Reduction Of Car Collision Avoidance Remarkably.