Battery-Free Wireless Switch Using Piezoelectric Energy Harvesting
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Solution Overview
Problem
Conventional wireless switches require battery replacement, which is inconvenient for users, as they do not have a sustainable power source for continuous operation.
Innovation Solution
A wireless switch design incorporating a rotating adjusting member, piezoelectric elements, and an RF communications module that generates electricity through mechanical deformation, allowing for battery-free operation by harnessing energy from user interactions to control electronic devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a battery is used to supply electricity to the wireless switch, then the wireless switch can operate wirelessly, but the battery needs to be replaced when its life ends, which is inconvenient for users
Solution Approach 1:
The wireless switch generates its own electricity through piezoelectric elements that convert mechanical energy from user interactions (rotating the adjusting member) into electrical energy. This self-powered mechanism eliminates the need for battery replacement, allowing the device to sustain continuous operation without external power sources or maintenance intervention.
Solution Approach 2:
The patent transforms the physical state of energy by converting mechanical energy (from rotating the adjusting member) into electrical energy through piezoelectric elements. This parameter change enables the wireless switch to generate its own operating power dynamically, eliminating the static battery power source that requires periodic replacement.
2Ease of operation
If a battery is used to supply electricity to the wireless switch, then the wireless switch can function, but the product reliability is reduced due to battery replacement requirements
Solution Approach 1:
The wireless switch generates its own electricity through piezoelectric elements that convert mechanical energy from user interactions (rotating the adjusting member) into electrical energy. This self-powered mechanism eliminates the need for battery replacement, allowing the device to sustain continuous operation without external power sources or maintenance intervention.
3Ease of operation
If a battery is used to supply electricity to the wireless switch, then the wireless switch can operate, but the lifespan of the wireless switch is limited by battery life
Solution Approach 1:
The wireless switch generates its own electricity through piezoelectric elements that convert mechanical energy from user interactions (rotating the adjusting member) into electrical energy. This self-powered mechanism eliminates the need for battery replacement, allowing the device to sustain continuous operation without external power sources or maintenance intervention.
Solution Approach 2:
The patent transforms the physical state of energy by converting mechanical energy (from rotating the adjusting member) into electrical energy through piezoelectric elements. This parameter change enables the wireless switch to generate its own operating power dynamically, eliminating the static battery power source that requires periodic replacement.
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 solution enables a battery-free, sustainable, and reliable wireless switch that can control electronic devices, such as lighting or audio systems, with enhanced product reliability and extended lifespan by converting mechanical energy into electrical energy for operation.
Implementation Method 1
a first piezoelectric element disposed on the first deformation member and configured to generate electricity when the first deformation member is deformed
Data Source
AI summary
A wireless switch includes: an adjusting member configured to rotate; a rotary plate comprising a first extending bar extending from a surface of the rotary plate in a radial direction and configured to be rotated together with the adjusting member; a first deformation member configured to be deformed by the first extending bar when the rotary plate rotates to cause the first extending bar to contact the first deformation member; a first piezoelectric element disposed on the first deformation member and configured to generate electricity when the first deformation member is deformed; and a radio frequency (RF) communications module unit configured to transmit a signal according to the electricity generated by the first piezoelectric element.