LED Security Light Control With Motion-Sensing Dual Illumination
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Solution Overview
Problem
Current LED lighting systems face complexity and high fabrication costs in design and control, particularly in implementing effective illumination controls such as contrast enhancement and color temperature management, especially for outdoor applications using photoresistors and motion sensors.
Innovation Solution
A two-level LED security light with a motion sensor that adjusts illumination levels by controlling electric current or lighting load, featuring a power supply unit, light sensing control unit, motion sensing unit, external control unit, and loading and power control unit to switch between low and high level illuminations based on ambient light and motion detection, using microcontrollers and semiconductor switching devices for efficient power management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If LED lighting systems implement effective illumination controls with photoresistors and motion sensors, then illumination control capability is improved, but device complexity and fabrication costs increase
Solution Approach 1:
The patent combines the photoresistor-based ambient light sensing and motion sensor functionalities into a unified control system that manages LED illumination levels. The controller integrates signals from both sensors to automatically adjust between low and high illumination modes, reducing the need for separate control circuits and simplifying the overall system architecture.
Solution Approach 2:
The LED lighting system is designed to perform multiple functions: ambient light detection via photoresistor, motion detection via motion sensor, automatic illumination level adjustment, and energy management. This multi-functional approach eliminates the need for separate dedicated systems for each function, thereby reducing device complexity while maintaining comprehensive illumination control capability.
2Adaptability or versatility
If LED lighting systems implement effective illumination controls with photoresistors and motion sensors, then illumination control capability is improved, but fabrication costs increase
Solution Approach 1:
The patent combines the photoresistor-based ambient light sensing and motion sensor functionalities into a unified control system that manages LED illumination levels. The controller integrates signals from both sensors to automatically adjust between low and high illumination modes, reducing the need for separate control circuits and simplifying the overall system architecture.
Solution Approach 2:
The system employs automatic control where the controller independently processes inputs from photoresistors and motion sensors to adjust illumination levels without manual intervention. This self-regulating mechanism eliminates the need for complex user interfaces and manual calibration procedures, thereby reducing fabrication costs while maintaining advanced illumination control capabilities.
3Use of energy by moving object
If the system maintains low-level illumination during non-detection periods, then energy savings are achieved, but illumination intensity is reduced
Solution Approach 1:
The patent implements dynamic illumination control where the system automatically adjusts between low and high illumination levels based on real-time environmental conditions and motion detection. During non-detection periods, the system operates at low illumination to conserve energy, and rapidly transitions to high illumination when motion is detected or ambient light levels change, optimizing the balance between energy consumption and illumination intensity.
Solution Approach 2:
The system employs periodic monitoring of ambient light levels and motion conditions, adjusting illumination levels in response to detected changes. This periodic action allows the system to maintain low illumination during stable non-detection periods while quickly responding to transient events, achieving energy savings without compromising illumination intensity when needed.
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
The system achieves energy savings by maintaining low-level illumination during non-detection periods and rapidly increasing to high-level illumination upon motion detection, providing effective warning and aesthetic night scenes while ensuring energy efficiency and long-lasting LED performance.
Implementation Method 1
A two-level LED security light with motion sensor that adjusts illumination levels
Implementation Method 2
using photoresistors and motion sensors
Data Source
AI summary
A linkable LED lighting system designed with an on line free setting method for adjusting operating parameters of at least one LED security light is disclosed. The linkable LED lighting system comprises at least one LED security light working in conjunction with a mobile phone loaded with an APP (software application) for controlling and setting at least one lighting characteristic of the at least one LED security light including time length settings, light intensity settings, color temperature settings, detection range settings, or signal frequency range or signal format settings for screening, accepting, and processing said wireless instruction signal(s) characterized with the same signal frequency range or the same signal format.