Wireless Power Supply Controller for Multi-Device Authentication
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Solution Overview
Problem
Conventional wireless power transmission systems fail to efficiently feed multiple power receiving apparatuses due to intentional authentication failures by the power sending apparatus, resulting in situations where power receiving apparatuses are not fed despite available excess power.
Innovation Solution
A power supply apparatus that includes a power source, a power supply antenna, a power acquisition unit, and a controller that sends a load disconnect signal to determine the actual power value and decide whether to feed new power receiving apparatuses based on this value, ensuring more apparatuses can be fed by preventing authentication failures and maintaining sufficient power supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the power sending apparatus intentionally fails authentication based on category information, then the power receiving apparatus is not fed, but the power sending apparatus cannot feed more power receiving apparatuses even when excess power is available
Solution Approach 1:
The power supply apparatus performs preliminary actions by disconnecting load before acquiring power values, and by acquiring category information in advance. This allows the system to prepare authentication decisions beforehand based on predicted power availability, rather than waiting for authentication requests, thereby reducing authentication failures and improving the ability to feed multiple apparatuses.
Solution Approach 2:
The power supply apparatus implements feedback by continuously acquiring actual power values from the power source and using this information to dynamically adjust authentication decisions. The controller feeds back the relationship between category information, power values, and authentication outcomes to optimize future authentication decisions, preventing intentional failures when power is actually available.
2Speed
If the power supply apparatus determines whether to feed based on category information, then authentication can be performed quickly, but the determination may be inaccurate leading to unnecessary authentication failures
Solution Approach 1:
The system performs preliminary acquisition of category information and prepares power value data in advance. This preliminary action allows the authentication process to proceed quickly by having pre-filtered information ready, while still enabling accurate determination when needed by comparing against actual power values.
Solution Approach 2:
The power supply apparatus acquires more information than minimally required by obtaining both category information and actual power values. This excessive action ensures accurate determination of power availability while maintaining quick authentication by using category information as a fast preliminary filter and only performing detailed power value checks when necessary.
3Productivity
If the power supply apparatus supplies power to multiple power receiving apparatuses, then more devices can be powered, but the power may become insufficient for existing apparatuses
Solution Approach 1:
Before supplying power to a new power receiving apparatus, the controller performs preliminary actions by disconnecting load from existing apparatuses and acquiring updated power values. This preliminary preparation ensures that power redistribution will not cause insufficiency for existing apparatuses, enabling safe expansion to multiple powered devices.
Solution Approach 2:
The system implements continuous feedback by monitoring power values and adjusting power distribution decisions accordingly. When a new apparatus is detected, the controller feeds back information about current power availability and existing apparatus power consumption to determine whether power can be safely reallocated, ensuring power sufficiency is maintained for all apparatuses.
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 allows for reliable feeding of multiple power receiving apparatuses by determining power distribution based on actual power values, preventing insufficient power states and ensuring more apparatuses can be powered, even when there is excess power available.
Implementation Method 1
a power supply antenna that supplies power from the power source to a power receiving apparatus
Data Source
AI summary
A power supply apparatus includes a power supply unit that supplies power from a power source to a power receiving apparatus, a power acquisition unit that acquires a power value of power from the power source upon detecting another power receiving apparatus, and a controller that determines whether to supply the power from the power source to the another power receiving apparatus based on the power value.