22-02-2017, 02:09 PM
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.
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.
