Audience Response System With Wireless Super Capacitor Charging
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Solution Overview
Problem
The proliferation of chemical reaction batteries in wireless electronic devices leads to environmental concerns due to their disposal in landfills, where chemicals can leach into groundwater, necessitating a battery-free power solution for portable devices like audience response systems.
Innovation Solution
A wireless audience response system that uses a super capacitor as a power supply, which is charged wirelessly through inductive coupling, with a controlled current delivery mechanism to ensure sufficient charge for operation, including a resonance circuit and a power impulse circuit to manage power distribution efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If chemical reaction batteries are used to power wireless electronic devices, then the devices can operate continuously, but environmental pollution occurs due to battery disposal in landfills
Solution Approach 1:
The patent extracts the harmful battery component from the wireless electronic device system and replaces it with a super capacitor powered by wireless energy transfer. This removes the source of environmental pollution while maintaining the device's operational capability through alternative energy storage and wireless charging mechanisms.
Solution Approach 2:
The patent replaces the chemical battery system with an electromagnetic-based wireless energy transfer system using a super capacitor. This substitution eliminates chemical reactions and waste products while providing continuous operation through wireless power transmission and efficient energy storage.
2Object-affected harmful factors
If a super capacitor is used instead of a battery, then environmental pollution is reduced, but the super capacitor cannot acquire sufficient charge from wireless charging
Solution Approach 1:
The patent implements periodic action through duty-cycled operation where the controller alternates between active and low-power states. This allows the super capacitor to accumulate charge during low-power periods while still providing sufficient operational energy during active periods, resolving the charge acquisition limitation.
Solution Approach 2:
The patent changes the operational parameters of the controller by implementing dynamic duty cycling and adjusting power consumption levels. This allows the system to adapt its energy usage to match the charging rate of the wireless power transfer, enabling the super capacitor to accumulate sufficient charge for continuous operation.
3Ease of operation
If current is continuously supplied to the controller, then the device operates smoothly, but the super capacitor cannot accumulate sufficient charge from wireless charging
Solution Approach 1:
The patent applies periodic action through duty-cycled operation, where the controller periodically activates and deactivates. This creates intervals of high and low power consumption, allowing the super capacitor to accumulate charge during low-power intervals while still providing smooth overall operation through rapid switching that averages out to continuous functionality.
Solution Approach 2:
The patent implements dynamic power management where the controller's operational state changes based on available charge levels. The system dynamically adjusts between active and low-power modes, creating a flexible operation pattern that ensures smooth user experience while allowing charge accumulation during transitional states.
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
This solution eliminates the need for traditional batteries, reducing environmental impact by providing a sustainable power source for portable devices, ensuring efficient operation and prolonged usage between charges, while minimizing power consumption during idle periods.
Implementation Method 1
The super capacitor is charged with a wireless-charging circuit
Implementation Method 2
The resonance circuit may resonate at a low frequency, such as at a frequency that is below approximately 100 kilohertz
Data Source
AI summary
A wireless response system and method of receiving user input selections at a base station includes distributing a plurality of response units to users. The response units wirelessly communicate with the base station in order to retrieve user responses received by the response units. Each of the response units has a user input device that is configured to receiving user input selections, a controller that is responsive to the user input device to process user inputs and to communicate responses wirelessly to the base station and a power supply having a super capacitor. The super capacitor is charged with a wireless-charging circuit and current is supplied from the super capacitor to the controller. Current supplied to the controller is controlled.