Wireless Power Supply Antenna Array Timing Control
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Solution Overview
Problem
Existing wireless power supply systems face inefficiencies when supplying power to multiple devices, as sequential calibration and power delivery processes increase time and reduce unit-time efficiency.
Innovation Solution
A power supply apparatus with multiple antennae and a control unit that synchronizes calibration signal timings and adjusts antenna outputs based on received signals from multiple power receiving devices to enable simultaneous calibration and power delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sequential calibration and power supply is performed for each power receiving device, then calibration accuracy is maintained, but the time required increases and power supply efficiency per unit time decreases
Solution Approach 1:
The patent segments the calibration process by assigning unique calibration signal timings to different power receiving devices. Each device transmits its calibration signal at a distinct time slot, allowing the power supply device to separately identify and calibrate for each device without interference, thereby maintaining calibration accuracy while enabling parallel processing
Solution Approach 2:
The patent implements periodic calibration signal transmission where multiple power receiving devices transmit calibration signals at different periodic time intervals. This allows the power supply device to receive and process calibration signals from multiple devices in a structured sequential manner within a single power supply cycle, improving overall efficiency
2Reliability
If sequential calibration is performed for multiple power receiving devices, then signal interference is avoided, but the calibration time increases and reduces available power supply time
Solution Approach 1:
The calibration process is segmented into distinct time slots assigned to different power receiving devices. Each device transmits its calibration signal in a dedicated time window, eliminating signal interference while completing all calibrations within a single compressed cycle rather than sequential multi-cycle processing
Solution Approach 2:
The power supply device preliminarily determines the optimal calibration signal timing for each power receiving device before the actual calibration process. This preliminary timing assignment ensures that calibration signals from multiple devices do not overlap, maintaining signal identification accuracy while optimizing the overall calibration duration
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 improves the efficiency of power supply to multiple devices by reducing calibration time and increasing the duration of power delivery per unit time.
Implementation Method 1
wireless power supply systems in which a power supply device including an array antenna constituted by a plurality of antenna elements outputs power as microwaves
Implementation Method 2
the calibration signals sent from the plurality of power receiving apparatuses are received via the plurality of antennae
Data Source
AI summary
A power supply apparatus, that can wirelessly supply power to a plurality of power receiving apparatuses, comprises: a plurality of antennae; and a control unit, wherein the control unit carries out control so that information pertaining to sending timings of calibration signals is sent, via the plurality of antennae, to the plurality of power receiving apparatuses; the control unit carries out control so that calibration signals sent from the plurality of power receiving apparatuses are received via the plurality of antennae; and the control unit controls an output of each antenna based on the calibration signals sent from the plurality of power receiving apparatuses so that power is supplied wirelessly to the plurality of power receiving apparatuses from corresponding ones of the plurality of antennae.