CHAPTER ONE: INTRODUCTION

1.1 BACKGROUND OF THE STUDY

The dashboard instrument cluster in a car organizes a variety of sensors and

gauges including the oil pressure gauge coolant temperature gauge fuel level

gauge tachometer and more. But the most prominent gauge and perhaps the most

important at least in terms of how many times you look at it while driving is the

speedometer. The job of the speedometer is to indicate the speed of a car in miles

per hour kilometers per hour or both. Even in late-model cars it's an analog device

that uses a needle to point to a specific speed which the driver reads as a number

printed on a dial.

As with any emerging technology the first speedometers were expensive and

available only as options. It wasn't until 1910 that automobile manufacturers began

to include the speedometer as standard equipment. One of the first speedometer

suppliers was Otto Schulze Auto meter (OSA) a legacy company of Siemens

VDO Automotive AG one of the leading developers of modern instrument

clusters. The first OSA speedometer was built in 1923 and its basic design didn't

change significantly for 60 years. In this project report high lights will be on the

history of speedometers how they work and digitalization of speedometer add-on

speed checker and what the future may hold for speedometer design below is a

pictorial overview of a speedometer.

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Fig1.1: A modern speedometer.

1.2 THE AIM AND OBJECTIVE OF THE PROJECT

 To design a digital speedometer.

 Incorporate a speed monitor with respect to set threshold.

1.3 SCOPE OF THE PROJECT

 Actualization of speed using analog to digital conversion technique;

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 Displaying the analog value in a digital format using an alphanumeric

LCD display;

 Entering the speed limit using keyboard built around to push to make

switches (mode and adjustment keys)

 Implementing hall -effect technique.

1.4 PROJECT REPORT ORGANIZATION

The chapter one is the introductory chapter of the project