THE DESIGN AND CONSTRUCTION OF CAR CONTROLLER USING TELEMETRY SYSTEM

THE DESIGN AND CONSTRUCTION OF CAR CONTROLLER USING TELEMETRY SYSTEM

CHAPTER ONE

INTRODUCTION

The vehicle system control using telemetry application is all about using a radio wave to control and activate various events such as the car horn, headlights, ignition (starter), and air conditioner, among others.

This is accomplished by employing a variety of tone frequencies via an encoder and a low-power radio frequency transmitter that provides the carrier frequency for these tones.

Demultiplexing and decoding of these tones occurs at the receiver end via a detector/receiver stage. The encoder’s output is used to activate a relay switch, which connects a power source to the car engine, horn, or lamp, among other things.

This project’s applications include space exploration, in which lunar vehicles are controlled from an earth station via satellite.

as the medium of transfer of signals.

Unmanned aerial vehicles, missiles, and even armored tanks are now controlled in military warfare using telemetry applications. Other areas include GSM, where a subscriber has complete control over his telephone conversation via the BTS (Base Transmission or Transceiver Station). Its applications are so numerous that they are difficult to list.

BLOCK DIAGRAM FOR TRANSMITTER CONTROL UNIT

RECEIVER CONTROL UNIT BLOCK DIAGRAM

The transmitter and receiver are the two components of a telemetry system. The radio wave serves as the link between the two units. The transmitter sends tones of varying frequencies, and the receiver receives them.

TRANSMITTER

A transmitter is a device that processes and possibly encodes information before transmitting and receiving it. The information modulates the carrier in a transmitter. Because wave modulation varies from system to system and can be at high or low levels, it is superimposed on a light frequency. Modulations are classified into three types: amplitude modulation, frequency modulation, and pulse modulation, as well as combinations of these.

MODULATION OF FREQUALITY:

Frequency modulation is a system in which the modulated carrier’s amplitude remains constant while its frequency and phase shift. The modulating signal alters the rate of change. Frequency modulation is much more noise-resistant than amplitude modulation because the noise vector is superimposed on the carrier.