please send me the soure code as it is very urgent for me.

source code for automatic street light intensity control

In present system, highways are usually lightened up by using HID (High Intensity Lamps) that consumes huge amount of energy and moreover its intensity cannot be varied as per need. Therefore the system “Street light automatic intensity controller” overcomes these limitations by making use of LED’s (Light Emitting Diodes) as light source and simultaneously its intensity can be varied and controlled according to requirements. A microcontroller of 8051 family is used for this purpose that contains programmable instructions to control the intensity by producing pulse width modulated signals which drives a MOSFET to switch LEDs to achieve required results. Thus the intensity increases during peak hours and gradually diminishes in late nights. At sharp 6am it completely goes off and resumes again at 6pm. This procedure goes on repeating everyday like this.

Street lights are controlled manually in olden days. These days automation of street lights has emerged. But one can observe that there is no need of high intensity in peak hours i.e. when there is no traffic and even in early mornings. By reducing the intensity in these times, energy can be saved to some extent. We have already published a post about Automatic Street Light Controller circuit which was designed using Relays and LDRs. This article explains the circuit that automatically controls the intensity of street lights which is designed using microcontroller and LEDs.

Auto Intensity Control of Street Lights Circuit Principle:

The circuit consists of ATmega8 controller, Real time clock and LDR. Depending on the time and LDR value, micro controller automatically adjusts the intensity of the street lights using pulse width modulation. In this article, Pulse width modulation signal is generated in ATmega8 micro controller using timer/counter-2 at OCR2 i.e. PB3 pin.

sir I need source code for auto intensity need Ur guidance in this . thank you

Street lights are manually controlled in the old days. These days the automation of street lights has emerged. But you can see that there is no need for high intensity at peak times, ie when there is no traffic and even in the early mornings. By reducing the intensity in these times, the energy can be saved to some extent.There are many methods to save energy such as changing street light in vehicle detection, street light control using LDR and relays etc. Proposed circuits control the intensity of street light by calculating Of peak hours. All circuits are shown in this article, The street light control using ATmega8 and the second explains street light control using the PIC micro-controller. The most commonly encountered street lights are HID or High Intensity Discharge lamps, which consume a lot of energy. In order to save energy, the circuits are designed with high intensity LEDs instead of HID lamps.

To control the intensity and reduce the waste of electrical energy in the public lighting system by replacing HID lamps with white light emitting diodes (LEDs). The main unit in this intensity control prediction is an 8051 family microelectronic which generates amplitude pulse-modulation signals that request a MOSFET to switch the LEDs accordingly to achieve a preferred operation.

In the contemporary procedure, in particular road lighting is carried out through high intensity discharge lamps (HID), whose energy intake is raised. Its intensity can not be regulated according to the obligation. This can be overcome by an alternative method of lighting system, ie using LEDs. This system demonstrates the use of LEDs (light emitting diodes) as the light source and its variable intensity control, according to the requirement. LEDs consume less energy and their life is also longer compared to conventional HID lamps. The main features of this system are that it can control the intensity according to the requirement during non-peak hours, which is not feasible in HID lamps.

A lot of LEDs are used to form a street light. Based on the PWM (Pulse width modulation) signals generated, the micro-controller contains programmable directives that control the intensity of the lights. According to orders, the intensity of the lights remains high during peak hours. As the traffic on the roads tends to decrease slowly in the last nights, the intensity also decreases progressively until the morning. It turns off completely in the morning 6, and comes back at 6 p.m. in the evening. The process is repeated.

This concept in the future can be increased by integrating it with the solar panel, as it converts the solar intensity into corresponding voltage, and this energy is fed to main beam.