Electromagnetic Induction Power Device for Safe Pedestrian Lighting
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Solution Overview
Problem
Existing portable light fittings that rely on human action for energy generation often require mercury batteries, which are environmentally polluting and prone to leakage or damage, especially in wet conditions, compromising pedestrian safety at night.
Innovation Solution
A power generating device using electromagnetic induction, comprising a first and second shell with engaging parts, an inductance coil, and a power saving module, which generates electrical energy when the shells are subjected to external forces, eliminating the need for mercury batteries and integrating with LED lighting for enhanced visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If mercury batteries are used in portable light fittings, then the fittings can emit light, but the batteries cause environmental pollution and are prone to leakage or damage
Solution Approach 1:
The patent extracts and removes the harmful mercury battery component from the portable light fitting system. Instead of using mercury batteries, the invention employs an electromagnetic induction power generating device that converts mechanical energy from human movement into electrical energy, thereby eliminating the pollution and leakage risks associated with mercury batteries while maintaining the light emission function through LED units.
Solution Approach 2:
The patent replaces the chemical energy storage system (mercury battery) with a mechanical energy conversion system (electromagnetic induction device). The power generating device utilizes electromagnetic induction to convert mechanical energy from pedestrian movement into electrical energy, which then powers the LED lighting module, thus substituting the harmful chemical battery system with a clean mechanical-to-electrical energy conversion system.
2Ease of operation
If thin batteries are installed in portable light fittings, then the fittings can be carried on the body, but the batteries require high specification waterproof equipments to prevent leakage and damage
Solution Approach 1:
The patent replaces the battery-based chemical energy storage system with a mechanical energy conversion system that generates electricity on-demand through electromagnetic induction. This eliminates the need for waterproof sealing of energy storage components, as the power generating device has no liquid electrolytes or chemical substances that could leak, thereby reducing waterproof complexity while maintaining portability.
Solution Approach 2:
The power generating device enables the portable light fitting to generate its own electrical energy through human movement via electromagnetic induction. This self-service capability eliminates the need for pre-charged batteries and their associated waterproof requirements, as the system produces electricity dynamically during use without requiring protected energy storage compartments.
3Object-affected harmful factors
If portable light fittings use simple actions of people for generating electrical energy, then the fittings do not need mercury batteries, but the device structure becomes more complex
Solution Approach 1:
The patent merges the power generation function and the power consumption function into a single integrated portable light fitting device. The electromagnetic induction power generating device is combined with the LED lighting module and control circuitry within one compact unit, allowing the device to generate and consume electricity internally without separate battery compartments, thereby managing structural complexity through functional integration.
Solution Approach 2:
The portable light fitting is designed with multi-functionality, serving both as a power generation device (through electromagnetic induction from human movement) and as a lighting device (through LED modules). This universal design consolidates multiple functions into one device structure, managing complexity by making each component serve multiple purposes rather than requiring separate dedicated systems.
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 device effectively generates electrical energy through human action, providing sustainable and reliable lighting for pedestrians, enhancing safety without the risks associated with mercury batteries, and is suitable for integration into shoe-pads or mats.
Implementation Method 1
the inductance coil generates an induced current by sensing changes of a magnetic flux
Data Source
AI summary
The invention discloses a power generating device comprising a first shell, a magnetic unit, a second shell and an inductance coil. The first shell comprises at least a first engaging part. The magnetic unit is disposed on the first shell. The second shell comprises at least a second engaging part which is detachably engaged to the first engaging part making the first shell and the second shell form a space, wherein the magnetic unit is disposed inside the space. The inductance coil is disposed on the second shell inside the space, and the magnetic unit is surrounded by the inductance coil. When an external force is applied to the first shell and the second shell, the first engaging part moves relatively to second engaging part, and the inductance coil generates an induced current by sensing changes of a magnetic flux.