Wireless Headset Charging Dock Using RF Power-Down Commands
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Solution Overview
Problem
Conventional headset charging methods often leave unneeded circuitry active, slowing down the charging process as users typically place headsets in chargers without powering them down, leading to inefficiencies.
Innovation Solution
A wireless charging dock equipped with a radio frequency (RF) radio, a charging induction coil, and a proximity sensor that senses the headset's presence, wirelessly charges the battery and communicates commands to power down unnecessary circuitry in the headset using the same protocol for audio signals, thereby optimizing charging efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the headset is placed in the charging dock without powering down, then the headset remains operational and ready for use, but the charging process slows down due to unneeded circuitry consuming energy
Solution Approach 1:
The charging dock automatically sends a power down command to the headset before initiating the charging process. This preliminary action ensures that unnecessary circuitry is powered off in advance, eliminating energy consumption during charging and maximizing charging speed without requiring user intervention.
Solution Approach 2:
The system implements a feedback mechanism where the charging dock communicates with the headset to send power down commands, and the headset responds by powering off non-essential circuitry. This closed-loop communication ensures that the headset is properly prepared for charging, resolving the contradiction between operational convenience and charging efficiency.
2Productivity
If the charging dock communicates commands to power down circuitry, then charging efficiency is improved, but the device complexity increases due to additional communication protocols
Solution Approach 1:
The charging dock utilizes the headset's existing RF radio and audio protocol for communication, rather than implementing a dedicated charging communication system. By making the existing audio communication channel multi-functional (serving both audio and charging control purposes), the system achieves improved charging efficiency without significantly increasing device complexity.
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 enables faster charging by powering down unneeded circuitry in the headset during charging, ensuring efficient energy transfer and reducing charging time.
Implementation Method 1
wirelessly charging a battery in the headset utilizing the charging induction coil
Implementation Method 2
sensing a presence of a headset using the proximity sensor
Data Source
AI summary
A method and system for a headset wireless charging dock, where the charging dock comprises a radio, a coil, and a proximity sensor. The method may comprise sensing a presence of a headset using the proximity sensor, wirelessly charging a battery in the headset utilizing the coil, and wirelessly communicating commands, using the radio, to the headset to power down when fully charged. The command may be communicated to the headset utilizing a protocol and a RF radio used by the headset to receive audio signals. The command communicated to the headset may power down audio processing circuitry in the headset. The charging induction coil may be inductively coupled to a coil in the headset to wirelessly charge the battery in the headset. The proximity sensor may comprise a Hall sensor.