Wireless Charging Detection Signal for Fast Low-Energy Receiver Sensing
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Solution Overview
Problem
Existing wireless charging methods and devices face issues such as blind zones in detecting wireless communication tags, potential damage to these tags due to high energy consumption, and slow charging response speeds, particularly when using digital Pings for power receiving device detection.
Innovation Solution
Implementing a detection signal, referred to as DD Ping, with a duration time between 1 ms and 65 ms, which identifies the modulation wave of 2 kHz to accurately detect power receiving devices without identifying the feedback signal content, thereby reducing energy consumption and preventing damage to wireless communication tags.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If digital Ping is used to detect power receiving device, then detection accuracy is improved, but energy consumption increases and wireless communication tag may be damaged
Solution Approach 1:
The patent changes the duration parameter of the detection signal from the standard 65-70ms digital Ping to a shorter duration of 5-65ms. This parameter modification reduces the energy consumption while maintaining the ability to detect the power receiving device through modulation wave identification, thereby resolving the contradiction between detection accuracy and energy consumption.
2Loss of information
If digital Ping with duration 65-70ms is used, then power receiving device information can be obtained, but charging response speed decreases
Solution Approach 1:
The patent applies partial action by using a shortened detection signal duration (5-65ms) that is sufficient to identify the modulation wave and detect the power receiving device, but not long enough to cause excessive delay. The system performs the essential detection function without waiting for the full 65-70ms duration, thus improving charging response speed while still obtaining necessary information.
3Reliability
If continuous detection of power receiving device and wireless communication tag is performed, then detection reliability is improved, but standby power consumption increases
Solution Approach 1:
The patent implements periodic detection using the shortened Ping signal instead of continuous detection. The system periodically transmits detection signals with duration of 5-65ms to check for the presence of power receiving devices and wireless communication tags. This periodic approach maintains detection reliability by regularly monitoring the charging field while significantly reducing standby power consumption compared to continuous monitoring.
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 DD Ping method enhances detection accuracy, reduces standby power consumption, and improves charging response speed by minimizing blind zones and protecting wireless communication tags from damage.
Implementation Method 1
a detection signal for detecting a power receiving device in wireless charging, wherein the detection signal is configured to wake up the power receiving device in a wireless charging field
Data Source
AI summary
The disclosure provides a detection signal for detecting a power receiving device in wireless charging, wherein the detection signal is configured to wake up the power receiving device in a wireless charging field, and cause the power receiving device to generates a feedback signal based on a modulation wave of about 2 kHz; a duration time of the detection signal is greater than 1 millisecond and less than 65 milliseconds; and the detection signal is configured to identify the modulation wave. The disclosure further provides a wireless charging method for a wireless charging device using the detection signal, and a wireless charging device using the detection signal.