SMART STREET LIGHT
Automatic switching of street lights considering the intensity of
sunlight, brightness control of lights on detecting movement and
error reporting to electric sub sections.
Smart street light system tries to find solution for the faster depletion of
energy resources due to the inefficient usage and wastage of these
Increasing electricity bill is something that can be witnessed by these
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.
DESIGN AND IMPLEMENTATION
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 metre, which
may not be sufficient for a 45 metre road.
This project include three modules, the sunlight sensing and control
of onoff of the lights, the traffic sensing and brightness control,
error reporting system.
Microcontroller used is arduino uno r3 atmega 328p ,which has to be
programmed for the three tasks. Inputs for the same come from the
three sensors.output include instruction to onoff the control sytems.
SYSTEM FEATURES/USE CASES
System for controlling onoff of lights
Use Case Description
Sunlight intensity less than 250 lux
Sunlight intensity grater than 250 lux
Flow of events
If the intensity is less than 250 then switch on the lights
Else switch off the light
120,000 lux Brightest sunlight
110,000 lux Bright sunlight
20,000 lux Shade illuminated by entire clear blue sky, midday
1,000 - 2,000 lux Typical overcast day, midday
<200 lux Extreme of darkest storm clouds, midday
400 lux Sunrise or sunset on a clear day (ambient illumination).
40 lux Fully overcast, sunset/sunrise
<1 lux Extreme of darkest storm clouds, sunset/rise
FOR COMPARISON, NIGHTTIME
ILLUMINANCE LEVELS ARE:
<1 lux Moonlight
0.25 lux Full Moon on a clear night
0.01 lux Quarter Moon
0.002 lux Starlight clear moonless night sky including airglow
0.0002 lux Starlight clear moonless night sky excluding airglow
0.00014 lux Venus at brightest
0.0001 lux Starlight overcast moonless night sky
BRIGHTNESS CONTROL ON
Use Case Description
Flow of events
If there is any movement detected by the infrared proximity sensor
then increase the brightness by controlling voltage from 110v to 220v
Continue this for next 5 minutes then resume the previous state
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.In the electromagnetic spectrum, infrared radiation
is the region having wavelengths longer than visible light
wavelengths, but shorter than microwaves. The infrared region is
approximately demarcated from 0.75 to 1000µm. 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.
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.
Current models feature a USB interface, 6 analog input pins, as well
as 14 digital I/O pins which allows the user to attach various
extension boards. The Arduino board exposes most of the
microcontroller's I/O pins for use by other circuits. The Diecimila,
Duemilanove, and current Uno provide 14 digital I/O pins, six of
which can produce pulsewidth modulated signals, and six analog
DETAILED SYSTEM DESIGN
TO CONTROL SYSTEM
LDR MODULE (up)
For sullight sensing
RISKS AND CHALLENGES
•The implementation of an error reporting system to the electricity
subsection is a difficult task.
•The switching of the lighting system between a minimum and
maximum mode is difficult.