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PROJECT DESCRIPTION

White Light Emitting Diodes (LED) replaces HID lamps in street lighting system to include dimming feature. A microcontroller of ARM cortex family is used to control the intensity by developing pulse width modulated signals that drives a MOSFET to switch the LEDs according to achieve desired operation.

In the present system, mostly the lightning up of highways is done through High Intensity Discharge lamps (HID), whose energy consumption is high. Its intensity cannot be controlled according to the requirement so there is a need to switch on to an alternative method of lightning system i.e., by using LEDs. This system is build to overcome the present day drawbacks of HID lamps.

This system demonstrates the usage of the LED’s (light emitting diodes) as the light source and its variable intensity control, according to the requirement. LED’s consume less power and its life time is more, as compared to the conventional HID lamps. The more important and interesting feature is its intensity can be controlled according to the requirement during non peak hours which is not feasible in HID lamps.

A cluster of LEDs are used to form a street light. The microcontroller contains programmable instructions which controls the intensity of lights based on the PWM (Pulse width modulation) signals generated. The intensity of lights are kept high during the peak hours, as the traffic on the roads tend to decrease slowly in the late nights, the intensity also  decreases progressively till morning. Final it completely shuts down at morning 6, and again resumes at 6pm in the evening. The process is repeated.

This concept in future can be enhanced by integrating it with the solar panel, which converts the solar intensity into corresponding voltage, and this energy is used to feed up the highway lights.

PROJECT HIGHLIGHTS
Easy to use, Self-explanatory kit.
All-inclusive solution kit.
Extensive audio-visuals available.
Branding-free material.
Pre-programmed Microcontroller.
Call/mail for Tech Support from 10 am - 7 pm.
Can be Customized for Arduino, Raspberry Pi, PIC
BLOCK DIAGRAM
ARM Cortex (STM32) based Auto Intensity Control
Hardware Requirements
  • Transformer
  • Diodes
  • Capacitors
  • Resistors
  • LEDs
  • ARM CORTEX (STM32) Microcontroller
  • White LEDs
  • MOSFET
  • Crystal.
Software Requirements
  • Keil compiler
  • Language: Embedded C or Assembly.
Q & A
Q:  What is the auto intensity control?
A:  Automatically controlling the intensity of street light according to the peak traffic hours in the night time and completely getting switched off at the day time based on time control is known as auto intensity control.
Q:  Which kind of street light is used in this project?
A:  A string of white LEDs are used as street lights.
Q:  What is the family of microcontroller used?
A:  ARM7 cortex (STM32) processor is used and development board is also provided with this project.
Q:  What is the concept used in this project?
A:  PWM technique is used in this project.
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Showing 2 of 2 reviews
padhu, kompally on 13th May, 2014, 11:15 AM

I purchased the kit as I got excellent feedback from my friends.

rajesh, hyderabad on 12th May, 2014, 07:35 PM

I liked the Your way of rapprochement, it 100% useful to students.

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