Dept. of Electrical and Electronic Engineering Science, University of Johannesburg, Auckland Park Kingsway Campus, Johannesburg, South Africa [email protected] plays a significant role in human lives, as it assists humans with better vision. Streetlights are essential for both safety and visibility at night. Like any electrical component, they consume energy and need to be switched on/off every day. It is essential to consider the optimal time for the lights to be switched on/off, the optimal con. Light dimming, streetlight, light sensing, motion sensing.The objective of this work was to build an energy saving streetlight controller that shall integrate both solar power and the power grid and use inductive sensing to control the streetlight's brightness. The solar panel was connected to a storage battery to be able to use the energy at night. The controller was expected to monitor the battery lev. Major and key components of the controller are discussed below:.
[PDF Version]
How do solar powered street lights work?
Abstract— The project is designed for Solar powered pedestal street lights that uses solar power from PV cells. For controlling the charging of the battery a charge controller is been used, and an LDR is used to sense the light on day as well as the evening time. The intensity of street lights is required to be kept high during the peak hours.
How does a solar system work?
The solar system automatically charges the battery and this now powers the street lights (LED's). The chosen LEDs only turns on at very high voltages. They only work when the battery is at least 80% full. This implies that after the system has drained 80% of the 12V battery, it is then supposed to resort to the grid.
'SOLAR POWERED LED STREET LIGHT WITH AUTO INTENSITY CONTROL '. The circuit is stationed in a suitable location that is exposed to sunlight so that immediately it is dark the system automatically switches “ON” the lamps and when the illumination is above 50 lux the lamps are automati-cally switched “OFF”.
What is a solar charge controller & how does it work?
White light emitting diode (LED) replaces the HID lamps due to which the light gets saved and the system works without any problem. For energy saving of solar based system, also a charge controller is used to protect the battery from over charging, overloading and deep dischargeing protection.
Can solar power be used to control Streetlight brightness?
2. RESEARCH OBJECTIVE The objective of this work was to build an energy saving streetlight controller that shall integrate both solar power and the power grid and use inductive sensing to control the streetlight's brightness. The solar panel was connected to a storage battery to be able to use the energy at night.
How do LED street lights work?
The output at that instance is depicted with the help of the oscilloscope in Fig.3 attached to the LED Street light. The output here is shown when the sun goes down and the LDR sends signal to the relay timer module and hence the LED street lights starts glowing.