Solar Street Light Control With Directional Motion Sensing
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Solution Overview
Problem
Conventional solar street lights consume excessive energy as they are always lit regardless of the presence of vehicles or pedestrians, and there is a lack of detailed lighting control based on the direction of movement.
Innovation Solution
A system comprising a solar panel, battery, solar controller, and street light controller with motion sensors and a communication module for LPWAN, enabling individual lighting control and dimming based on detected movement directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If solar street lights are always lit regardless of presence, then lighting availability is ensured, but energy consumption increases excessively
Solution Approach 1:
The street light system dynamically adjusts its operation mode between full illumination and dimmed state based on real-time motion detection. When motion is detected, the system provides full lighting; when no motion is present, it transitions to a dimmed state to conserve energy. This dynamic adaptation resolves the contradiction between ensuring lighting availability and reducing energy consumption.
Solution Approach 2:
The system incorporates motion sensors that continuously monitor the environment and provide feedback to the control unit. This feedback mechanism enables the system to automatically adjust lighting levels based on the presence or absence of pedestrians or vehicles, thereby maintaining lighting availability when needed while minimizing energy consumption during idle periods.
2Ease of operation
If conventional solar street lights are used, then simple operation is maintained, but detailed lighting control according to movement direction cannot be performed
Solution Approach 1:
The motion detection system is divided into multiple sensing zones with different detection directions, allowing the system to identify the direction of approaching pedestrians or vehicles. Each zone can independently trigger lighting control, enabling detailed directional control while maintaining overall system simplicity through modular sensor placement and independent zone processing.
Solution Approach 2:
The control unit is designed to perform multiple functions: basic motion detection, directional determination, and adaptive lighting control. By integrating these functions into a single universal controller, the system achieves advanced adaptability without significantly increasing operational complexity, as the control unit automatically processes all functions based on sensor inputs.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Reduces power consumption by optimizing lighting based on presence and movement, allowing fine-grained control of multiple street lights.
Implementation Method 1
a solar panel configured to generate photovoltaic-based electricity using sunlight
Data Source
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AI summary
A system for street light lighting control and for Internet-of Things (IoT) control for monitoring solar power generation according to the present invention includes a solar panel (100) configured to generate photovoltaic-based electricity using sunlight; a battery (200) configured to store the electricity generated by the solar panel (100); a solar controller (300) configured to control the battery (200) to store the electricity; and a street light controller (400) configured to control lighting of at least one street light using the electricity stored in the battery (200), wherein the solar controller (300) includes a battery information detection module (302) configured to detect remaining charge information and discharging time information, which are charging/discharging status information of the battery (200) and a communication module (304) configured to transmit the remaining charge information and discharging time information to a monitoring server (600), wherein the communication module (304) transmits the charging/discharging status information, the remaining charge information, and the discharging time information to the monitoring server (600) through a low-power wide area network (LPWAN).