VELALAR COLLEGE OF ENGINEERING AND TECHNOLOGYERODE-12DEPARTMENT OF BIOMEDICAL ENGINEERINGPROJECT EXPO-2015HIGHWAY ALERT LAMPObjective and Scope of the Project:Here is a signal lamp for safe highway driving. The lamp automatically emits brilliant tricolour light when a vehicle approaches the rear side of your vehicle. The ultra-bright blue, white and red LEDs of the signal lamp emit very bright light to alert the approaching vehicles driver even during the day, giving additional safety during night, or when you need to stop your vehicle on side of the highway. ABSTRACT:A project is to develop an automated lamping system for vehicles to have safe highway driving. The purpose of this system is to provideilluminationfor the driver to operate the vehicle safely after dark, to increase thesafety of the vehicle, and to display information about the vehicle's presence, position, size, direction of travel, and driver's intentions regarding direction and speed of travel. The lamp automatically emits brilliant tri-colour light when a vehicle approaches the rear side of the vehicle and turns off when the approaching vehicle overtakes.The photo sensor is used to sense the approaching vehicle. This Ultra-bright blue yellow and red heads of the signal alert lamp emits very bright light to alert vehicle's driver even during daytime, giving additional safety during night or when we need to stop our vehicle on the side of the highway. The circuit saves considerable battery power. 12v DC supply to the circuit can be provided by the car battery with proper polarity. The circuit is built around two timer ICs NE555 (IC1 and IC2). IC1 is designed as a standard mono-stable, while IC2 is designed as an astable. Darlington phototransistor L14F1 (T1) is used as a photo sensor to activate the mono-stable. The collector of phototransistor T1 is connected to trigger pin 2 of IC1, which is normally kept high by resistor R1. CIRCUIT DIAGRAM:

APPLICATIONS:High way alert signal lamp is used in vehicles for safe highway driving. The lamp automatically emits the brilliant tricolour light when a vehicle approaches the rear side of the vechile and alerts the driver by this indication about the approach of the vehicle from behind.l2v DC supply to the Circuit can be provided by car battery with proper polarity.

SUBMITTED BY,SUBHASHINI.R(2 YR BME).KARTHIGA.D(2 YR BME).