Wireless Power Receiver State Detection via Dual Voltage Thresholds
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Solution Overview
Problem
Wireless power feeding systems face instability in power supply due to environmental influences, leading to significant fluctuations in power delivery, making it difficult to maintain a stable power feeding state.
Innovation Solution
A receiver equipped with a rectifier, electric power management part, and charger, along with a program that detects and compares rectified and power supply voltages with threshold values to determine the power receiving state, allowing for stable power delivery to microcomputers and sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If wireless power feeding is performed, then electric power can be supplied to the receiver, but the power feeding state becomes unstable and fluctuates greatly due to environmental influences
Solution Approach 1:
The invention implements feedback by continuously monitoring both the rectified voltage from the rectifier and the power supply voltage from the charger, comparing them with predetermined threshold values, and using this feedback information to determine the power receiving state. This closed-loop feedback mechanism enables the system to adapt to environmental fluctuations and maintain reliable operation despite unstable wireless power feeding conditions.
Solution Approach 2:
The receiver performs self-diagnosis by independently determining its own power receiving state through internal voltage measurements and comparisons. The receiver compares the rectified voltage with a first threshold and the power supply voltage with a second threshold, then determines whether it is in a power reception OK state or NG state without external intervention, enabling autonomous operation and reducing system complexity.
2Use of energy by moving object
If the receiver independently determines power receiving state through voltage comparison, then computational load and power consumption are reduced, but the system requires multiple voltage detection and comparison operations
Solution Approach 1:
The invention segments the power receiving state determination into two independent comparison operations: first comparing rectified voltage with a first threshold value, and second comparing power supply voltage with a second threshold value. By dividing the determination process into separate, simple comparison steps rather than a single complex calculation, the system reduces computational load and power consumption while maintaining determination accuracy.
Solution Approach 2:
The invention uses simple threshold comparison operations instead of complex computational algorithms. By replacing sophisticated power state analysis with basic voltage threshold checks, the system achieves reliable power receiving state determination with minimal computational resources and low power consumption, effectively using simple, 'disposable' comparison operations rather than expensive computational processes.
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 precise determination of the power receiving state, reducing power consumption and computational load by allowing the receiver to assess its power state independently, ensuring stable power supply to connected devices.
Implementation Method 1
a rectifier for rectifying the transmitting power
Data Source
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AI summary
To provide a program for operating a receiver 200 which includes a rectifier 202 for rectifying the transmitting power, an electric power management part 203 for managing a rectified voltage from the rectifier 202, and a charger 204 to be electrically charged with an output voltage from the electric power management part 203. The program causes a microcomputer 205 to execute a first step of detecting the rectified voltage and a power supply voltage which is a charging voltage of the charger 204; a second step of comparing the rectified voltage detected in the first step with a first threshold value prescribed for the rectified voltage, and comparing the power supply voltage detected in the first step with a second threshold value prescribed for the power supply voltage; and a third step of determining a power receiving state of the receiver 200 based on at least one of the comparison results in the second step.