Automatic Vehicle Speed Control At School Zones 3z3362

AUTOMATIC VEHICLE SPEED CONTROL AT SCHOOL ZONES

Aim of the project: To design a RF based automatic vehicle speed control at school zones.

Target device

:

AT89s52

Family

:

8051

Display

:

2x16 character LCD

Frequency

:

11.0592MHz

Operating voltage

:

+5v DC

Modules

:

RF tx, RF rx

Others

:

DC motors, keypad

Compiler

:

Kiel uvision (IDE)

Programmer

:

Flash magic

Software:

Areas of application: 

Automobiles

Advantages: We can avoid accidents at dangerous zones.

Introduction: Nowadays people are driving very fast, accidents are occurring frequently, we loss our valuable life by making small mistake while driving (school zone, hills area, highways). So to avoid such accidents, this project alerts drivers to control speed for appropriate place. The main objective is to design a Smart Display and Controller meant for vehicle’s speed control and monitors, which can run on an embedded system. Smart Display & Control (SDC) can be custom designed to fit into a vehicle’s dashboard, and display information on the vehicle to be traveled in the different zone and its automatically controls vehicle’s speed in different zonal state (like school zone, hills area, U-turn, highway etc.).

Design: One of the main form of communication that has been in use since 19 th century is Radio Wave communication. Radio Waves have found its place in each and every field whether it be medical, electronics or space. In general it exists in every system in one or the other form. The use of Radio Waves had made life much simpler and safer. A heart patient can be monitored by a doctor remotely sitting in his chamber is because of the use of Radio Waves. Radio Waves have made communication through telephone, internet etc easier and cheaper. Our project demonstrate one such example where Radio Wave is employed in a way which is helpful to us. This project is designed and developed for controlling the speed of the vehicle at school zones. The RF technology is used in the project to communicate between the transmitter and receiver. Each transmitter has a unique binary code which is transmitted continuously to space in a particular range. This signal is captured by the receiver when it reaches in its range. When vehicle comes near school zones then the receiver captures the information from

the transmitter and automatically slows down the vehicle speed.

Block diagram: Receiver side:

Power supply Power on reset

L293d

RF receiver

HT12D

Transmitter side

Keypad

HT12E

RF transmitter