Wireless Power and Data Apparatus with Dynamic Mode Switching
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication and power systems for transponders in automotive applications face limitations in using a common carrier frequency for both power transmission and data communication, particularly in metal environments, and struggle to prioritize transponder authentication over wireless charging operations.
Innovation Solution
A base station with a transceiver and authentication module operates in two modes: one for high-power wireless charging of portable devices and another for low-power data communication and authentication with transponders using the same carrier frequency, ensuring timely authentication and minimizing interference between power and communication operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a common carrier frequency is used for both wireless power transmission and data communication, then device complexity is reduced and hardware requirements are simplified, but interference between power and communication operations occurs and authentication timing may be delayed
Solution Approach 1:
The base station dynamically switches between power transmission mode and communication mode based on detected transponder presence. When a transponder is detected, the system transitions from high-power transmission to low-power communication mode, ensuring authentication occurs without interference. This dynamic mode switching resolves the contradiction by adapting system behavior to operational context.
Solution Approach 2:
The system employs periodic detection cycles to check for transponder presence before initiating power transmission or communication operations. This periodic checking mechanism ensures that authentication can occur at appropriate intervals without continuous interference, balancing hardware simplicity with reliable authentication timing.
2Productivity
If high power is used for wireless charging, then charging efficiency is improved, but interference with transponder communication increases and may prevent timely authentication
Solution Approach 1:
The base station adjusts power levels dynamically based on operational mode. High power is transmitted during charging operations to maximize efficiency, while switching to low power during communication operations to enable reliable transponder authentication. This dynamic power adjustment resolves the contradiction between charging efficiency and authentication reliability.
Solution Approach 2:
The system performs preliminary detection of transponder presence before initiating high-power charging operations. If a transponder is detected, authentication is performed first at low power, preventing interference issues before they occur. This preliminary action ensures authentication reliability while preserving charging efficiency when no transponder is present.
3Object-generated harmful factors
If low power is used for transponder communication, then interference with power transmission is minimized, but communication range and reliability may be reduced
Solution Approach 1:
The system uses periodic low-power communication pulses interspersed with power transmission cycles. This periodic communication approach minimizes continuous interference with power transmission while maintaining sufficient communication reliability through repeated detection attempts. The periodic nature allows the transponder to be reliably authenticated without sustained interference.
Solution Approach 2:
The base station maintains continuous monitoring and alternating between power transmission and communication modes, ensuring that useful actions (both charging and authentication) continue without interruption. This continuous operation at appropriate power levels ensures communication reliability while minimizing interference through timely mode switching.
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 approach enables efficient wireless charging and authentication of transponders using a common carrier frequency, prioritizing transponder communication to ensure vehicle access and operation without additional hardware, while maintaining seamless power transmission and minimizing interference.
Implementation Method 1
The transceiver operates in a first mode to generate and transmit a high-power signal to transmit wireless power to a portable device
Implementation Method 2
The transceiver also operates in a second mode to generate and transmit a low-power data-carrying signal (also at the first frequency) to communicate authentication data with a remote operator-carried transponder
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Wireless charging and data communication are effected. In accordance with various example embodiments, a transceiver-type circuit wirelessly charges portable devices, such as hand-held telephones via wireless signals, and also wirelessly communicates data with remote transponders. The data communication is carried out to facilitate authentication of the remote transponders and may, for example, be limited relative to a power-carrying capability of the transponders. Such aspects may be implemented, for example, in a transceiver for both transponder-based operation and (high-power) wireless charging applications in vehicle-based circuits.