Multi-Antenna Measuring Instrument for Orientation-Stable Wireless Power
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Solution Overview
Problem
Existing wireless power transfer systems face inefficiencies due to orientation changes of electronic devices, which affect power reception and may pose risks to human health when power is transmitted near the body.
Innovation Solution
A portable measuring instrument equipped with multiple power receiving antennas, posture detection, and a signal transmission system to optimize power reception and transmit beacon signals, ensuring efficient power transfer while minimizing human exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single power receiving antenna is used, then the device structure is simple, but power transmission efficiency decreases when the electronic device orientation changes
Solution Approach 1:
The single antenna is segmented into multiple antenna elements (first, second, third, and fourth antennas) arranged in specific spatial orientations. This segmentation allows the system to receive power efficiently regardless of the device's orientation, as at least one antenna element will be optimally aligned with the transmitted power signal.
Solution Approach 2:
The patent transitions from a single-point antenna to a multi-dimensional antenna array configured in different spatial orientations (e.g., orthogonal arrangements). This dimensional expansion enables the system to capture power signals from multiple directions simultaneously, solving the orientation-dependent efficiency problem.
2Ease of operation
If power is transmitted near the human body, then wireless power transfer can be performed in close proximity, but health risks increase due to excessive power exposure
Solution Approach 1:
The patent implements a feedback mechanism where the electronic device detects the presence of a human body through sensors (e.g., proximity sensors, capacitive sensors) and communicates this information back to the wireless power transfer apparatus. Based on this feedback, the power transmission is adjusted or suspended to prevent excessive exposure, thus protecting human health while maintaining operational flexibility.
3Adaptability or versatility
If the electronic device orientation changes during power reception, then user mobility is improved, but power reception stability deteriorates
Solution Approach 1:
The patent employs dynamic antenna selection and switching mechanisms that adapt in real-time to the device's orientation changes. The system continuously monitors the reception quality from multiple antenna elements and dynamically switches to or combines signals from the most suitable antennas, maintaining stable power reception despite orientation variations.
Solution Approach 2:
The patent uses composite signal reception by combining power signals received from multiple antenna elements through signal processing techniques (e.g., beamforming, maximal ratio combining). This composite approach creates a more robust and orientation-independent power reception system, enhancing reliability while preserving user mobility.
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
Enhances power transmission efficiency and reduces health risks by aligning antennas with optimal orientation and preventing power transfer when humans are nearby.
Implementation Method 1
a receiver receives power transmitted by a transmitter via a receiving antenna
Data Source
AI summary
A portable measuring instrument is a portable measuring instrument that receives power transferred from a wireless power transfer apparatus for transferring power wirelessly, the measuring instrument includes a plurality of power receiving antennas that receive power transmitted from the wireless power transfer apparatus, a posture detection part that detects a posture of the measuring instrument, and a signal transmission part that transmits a beacon signal including information indicating the posture detected by the posture detection part, wherein after the signal transmission part transmits the beacon signal, any of the plurality of power receiving antennas receives power from the wireless power transfer apparatus.