This document describes the design of a smart street light system that uses sensors and a microcontroller to automatically control street lights. The system aims to reduce energy waste by switching lights on only when motion is detected and adjusting brightness based on sunlight levels. Key components include infrared and proximity sensors to detect vehicles, an Arduino microcontroller to control the lights, and a light dependent resistor to measure sunlight intensity and determine when to turn lights on or off. The document outlines the problem, objectives, design constraints, system features and components.

1. SMART STREET LIGHT
SYSTEM

2. CONTENTS
 Problem Statement
 Project scope/objective
 Design and Implementation
 System features
 Infrared and proximity sensor
 Arduino
 System Design

3. PROBLEM STATEMENT
 Automatic switching of street lights considering the intensity of sunlight,
brightness control of lights on detecting movement of vehicles and error
reporting to electric sub sections

4. PROJECT SCOPE/OBJECTIVE
 Smart street light system tries to find solution for the faster depletion of
energy resources due to the inefficient usage and wastage of these
resources.
 Increasing electricity bill is something that can be witnessed by these
practices.
 This project help to decrease the wastage of electricity by controlling the
working of street light system that attributes to a good amount of
electricity bills in our nation.
 This project does not include methods to incorporate usage of renewable
resources like solar energy.

5. DESIGN AND IMPLEMENTATION
CONSTRAINTS
 Constraints are mainly in the module that regulate the
brightness of the light by considering the traffic on the street
at a specific time.
 Infrared proximity sensors are costly and at the same time
maximum distance to which the sensor can sense is limited to
1 meter, which may not be sufficient for a 45 meter road.

6. SYSTEM FEATURES
 System for controlling onoff of lights
 Use Case Description
 Sunlight intensity less than 250 lux
 Sunlight intensity greater than 250 lux
 Flow of events
 If the intensity is less than 250 then switch on the lights
 Else switch off the light this takes place using LDR sensor.

7. INFRARED PROXIMITY SENSOR
 An infrared sensor is an electronic instrument that is used to sense
certain characteristics of its surroundings by either emitting and/or
detecting infrared radiation.
 It is also capable of measuring heat of an object and detecting
motion. Infrared waves are not visible to the human eye.
 Infrared technology is found in many of our everyday products. For
example, a television has an IR detector for interpreting the signal
from the remote control. Key benefits of infrared sensors include low
power requirements, simple circuitry, and their portable feature

8. ARDUINO
 Arduino is a single-board microcontroller, intended to make
the application of interactive objects or environments more
accessible.
 The hardware consists of an open- source hardware board
designed around an 8-bit Atmel AVR microcontroller, or a 32-
bit Atmel ARM.

9. SYSTEM DESIGN

10. INFRARED SENSOR

11. Thank You