Friday, 14 October 2016

Smart street light using arduino


This project is about smart street light using arduino. This project consists of 3 analog IR (infrared) sensors. By default, the intensity of street light is set to 50 percent. We are using high intensity led as they have extra brightness. This project also features harnessing the solar and wind energy.
We are using a solar panel of  9 Volt, 2.5 watts and for wind mill, we are simply using a 12 volt dc motor.

Components required:
  1. Atmega 8a (based on arduino ng board)
  2. 8 high-intensity led
  3. Relay
  4. Perfboard
  5. 7805
  6. connecting wires
  7. solar panel (9 volt, 2.5 watt)
  8. Relay
  9. 12 volt DC motor.
How it works:

By default, the intensity of high intensity light (aka street light) is set to 50% pwm. We are using three channel of PWM. The first channel of pwm is controlling three leds, second channel is used for controlling two led's whereas the third channel is used for controlling three led at once. There are eight high intensity led. There are three, analog IR sensor, which can detect the vehicle. Upon detection of vehicle by the first sensor, it will increase the duty cycle of first three led's to 100% and by this the intensity of first three led will increase. Now, when vehicle reaches near second IR sensor first three led will again set to 50% duty cycle whereas the next two led will set to 100% duty cycle. 

IR sensor:

IR sensor is made up of simply IR led and photodiode. The connection is as follows:

DIY infrared sensor
DIY IR sensor

Check out the video:

Stay tuned for more updates !!

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