Smart Holder Noise Mitigation for Wireless Charging and Sensing
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Solution Overview
Problem
Existing multifunctional smart holders cannot integrate wireless charging and near-field sensing circuits due to noise interference, which limits their functionality and accuracy in sensing and charging operations.
Innovation Solution
A multifunctional smart holder with a control circuit that includes noise mitigation techniques such as median filtering, slew rate limiting, low-pass filtering, and self-learning to reduce noise interference, allowing for the integration of both wireless charging and near-field sensing circuits, enabling accurate sensing and reliable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a wireless charging circuit and a near-field sensing circuit are integrated in the same multifunctional smart holder, then the functionality and versatility of the holder is improved, but noise generated by the wireless charging circuit interferes with the near-field sensing circuit causing misjudgment
Solution Approach 1:
The patent divides the holder into distinct functional modules: a wireless charging module and a near-field sensing module. Each module operates independently with its own circuitry and control logic, allowing both functions to coexist without mutual interference. The segmentation enables the holder to perform wireless charging and near-field sensing simultaneously or separately without one function degrading the other.
Solution Approach 2:
The patent introduces an intermediary control mechanism that manages the interaction between the wireless charging circuit and the near-field sensing circuit. This intermediary layer coordinates the operation of both circuits, preventing noise from the wireless charging circuit from interfering with the sensing circuit by controlling their operational timing and power distribution.
2Measurement precision
If noise mitigation techniques are applied to reduce interference from wireless charging, then sensing accuracy is improved, but device complexity increases
Solution Approach 1:
The patent converts the harmful noise generated by the wireless charging circuit into a beneficial signal for the near-field sensing function. By detecting and utilizing the electromagnetic field characteristics produced during wireless charging, the system enhances the near-field sensing capability rather than merely filtering out the noise. This approach transforms the interference problem into a functional advantage, improving sensing accuracy without requiring complex noise cancellation circuits.
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 effectively reduces noise interference, preventing misjudgment and enabling the smart holder to accurately sense and charge devices while maintaining functionality despite environmental changes.
Implementation Method 1
a wireless charging circuit for performing a wireless charging program on the portable device
Implementation Method 2
a near-field sensing circuit for performing a near-field sensing program to sense a near-field distance between an object to be tested and the multifunctional smart holder to generate a near-field sensing signal
Data Source
AI summary
A multifunctional smart holder and a control method thereof. The multifunctional smart holder is placed on a vehicle device and used for holding a portable device. The multifunctional smart holder comprises: a near-field sensing circuit, a wireless charging circuit and a control circuit. The near-field sensing circuit performs a near-field sensing program to sense a near-field distance between an object to be tested and the multifunctional smart holder to generate a near-field sensing signal. The wireless charging circuit performs a wireless charging program. The control circuit determines whether the portable device is to be placed in the multifunctional smart holder, or taken out from the multifunctional smart holder according to the near-field sensing signal, so that the multifunctional smart holder clamps or releases the portable device, and performs a program for mitigating noise interference to reduce noise generated by the wireless charging circuit when performing the wireless charging program.