Street lighting helps to provide a safe environment for all road users, including pedestrians, at night. According to research, street lighting greatly reduces traffic accidents at night. Additionally, it alleviates fear of violence and promotes social involvement by creating an atmosphere conducive to walking throughout the hours of darkness. Street lighting is one of a city's most critical and costly obligations. Lighting may account for between 10% and 38% of a typical city's overall energy cost. Street lighting is a major issue for public authorities in emerging nations, owing to its strategic significance for economic and social stability. Each year, inefficient lighting consumes enormous financial resources, and inadequate illumination contributes to harmful circumstances. Energy-efficient technology and design may significantly reduce the cost of street lighting (often by 25-60 percent).
A LDR is a Light Dependent Resistor whose value is proportional to the amount of light falling on it. It has a resistance of about 1 mega ohm when completely dark, but drops to roughly 5k ohms when fully illuminated. The IC 555 timer is used to regulate the functioning of the circuit, which doubles as a comparator when pin 6 is connected to the positive terminal.
There were two goals for the project: to lessen the negative consequences of the present street lighting system, and to find a way to conserve energy. The first step in this project is to set up the inputs and outputs of the system that will be used to control the street lights, which will take some time.
This study elaborates the design and installation of automated street control system circuit. Circuit works perfectly to turn street light ON/OFF. After creating the circuit which controls the illumination of the street as demonstrated in the previous sections. LDR sensor and the photoelectric sensors are the two basic conditions in functioning the circuit. If the two requirements have been met the circuit will conduct the needed task according to particular program. Each sensor regulates the turning ON or OFF the lighting column. The LEDs have been successfully controlled by 555 timer. With orders from the sensor, the lights will be ON at the areas of the movement while it's dark. moreover, the problem of the street light system employing timer controller has been eliminated, where the system relies on photoelectric sensor. Finally, this control circuit may be employed on a lengthy route between the cities.
Manzur-E-Elahi Prokorso
EEE Department
American International University-Bangladesh
Salim Sadman Seger
EEE Department
American International University-Bangladesh
Shakhawat Hosen
EEE Department
American International University-Bangladesh
Swati Singha
EEE Department
American International University-Bangladesh