Active Cover Plate Power Extraction and Motion Sensing
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Solution Overview
Problem
Designing a nightlight for electrical switch installations that is easy to install and provides adequate illumination without adverse effects, while addressing challenges such as varying lighting needs and ensuring safety and efficiency.
Innovation Solution
The use of active cover plates with integrated circuitry and prongs that can extract power from electrical switches, allowing for controlled illumination and functionality, including adjustable light levels and color, through contact with screw terminals, and the incorporation of sensors for motion detection and wireless communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If active cover plates with integrated circuitry are used to extract power from electrical switches, then customizable lighting solutions and user control over illumination levels are improved, but device complexity increases
Solution Approach 1:
The patent combines the cover plate, power extraction circuitry, LED illumination system, motion sensor, and wireless communication module into a single integrated device. This merging allows the cover plate to serve multiple functions (power extraction, illumination, sensing, communication) simultaneously, achieving customizable lighting solutions while managing device complexity through functional integration
Solution Approach 2:
The active cover plate is designed as a universal device that can extract power from standard electrical switch installations, provide adjustable illumination, detect motion, and communicate wirelessly. This multi-functionality allows a single device to replace multiple separate components (power adapter, light fixture, motion sensor, communication module), improving adaptability while controlling complexity through design consolidation
2Power
If prongs contact screw terminals to extract power, then efficient power extraction is improved, but safety risks increase
Solution Approach 1:
The patent uses prongs as intermediary contact elements that bridge the electrical switch terminals and the internal circuitry. These prongs are designed with insulated housings and controlled contact surfaces that mediate the electrical connection, enabling efficient power extraction while isolating users from direct exposure to live electrical components through the insulating cover plate structure
Solution Approach 2:
The active cover plate automatically establishes safe electrical connections through its prongs contacting the screw terminals during installation. The device self-regulates power extraction through integrated circuitry that manages current flow, eliminating the need for manual electrical wiring configurations that would increase safety risks while maintaining efficient power extraction
3Ease of operation
If motion sensors and wireless communication modules are integrated, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The motion sensor and wireless communication module are merged into the cover plate assembly along with other functional elements. This integration allows the device to automatically detect motion and transmit wireless signals without requiring separate external sensors or communication devices, improving ease of operation while managing complexity through consolidated design
Solution Approach 2:
The integrated motion sensor and wireless communication module enable the cover plate to autonomously detect environmental conditions and communicate status or control information without user intervention. This self-service capability improves ease of operation by eliminating manual configuration or external device requirements, while the integrated design keeps complexity manageable through functional consolidation
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
Enables easy installation, customizable lighting solutions, and efficient power extraction from electrical switches, providing enhanced safety and user control over illumination levels and functionality.
Implementation Method 1
The circuit includes a plurality of light emitting diodes (LEDs) arranged in a grid pattern
Data Source
AI summary
A variety of active units that sense environmental variables and take various actions are described. In one embodiment, an active unit includes at least one sensor to detect a change in an environmental variable and generate a sensor signal and an action module configured to influence the environmental. The active unit may also include a communication module and a processor module configured to accept the sensor signal and determine if the environmental variable exceeds a threshold and to instruct the action module not to take action to influence the environmental variable, and instruct the communication module to transmit a signal to other active units that the environmental variable has exceeded the threshold.