Master-Slave Wireless Power Testing System
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Solution Overview
Problem
Current wireless power transfer testing equipment is inadequate for evaluating the performance of devices that can charge multiple receivers simultaneously, as it primarily focuses on single-device testing, leading to issues like performance degradation, interference, and heating problems when multiple devices are charged concurrently.
Innovation Solution
A system comprising a master test device and multiple slave test devices that communicate and perform concurrent testing of wireless power transmitters, allowing for simultaneous evaluation of multiple transmitters and receivers, with the master device analyzing results to provide comprehensive output on performance and compliance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If single-device testing is used, then testing simplicity is maintained, but testing accuracy for multi-device charging is insufficient
Solution Approach 1:
The testing system is segmented into a master test device and multiple slave test devices. Each slave test device independently tests a specific wireless power transmitter, while the master test device coordinates the overall testing process. This segmentation allows accurate multi-device testing without requiring a single overly complex testing system.
Solution Approach 2:
The master test device acts as an intermediary that receives test results from multiple slave test devices, processes the data, and generates comprehensive test reports. This intermediary structure enables the system to handle complex multi-device testing scenarios while maintaining manageable complexity at each individual device level.
2Productivity
If multiple devices are charged concurrently, then charging efficiency is improved, but interference and heating problems occur
Solution Approach 1:
The testing system implements feedback mechanisms where slave test devices continuously monitor test parameters during concurrent charging operations. The master test device receives this feedback data and can analyze interference and heating effects that occur during simultaneous multi-device charging, enabling identification of optimal charging configurations.
Solution Approach 2:
The system tests multiple parameter configurations including different power levels, charging sequences, and device arrangements. By varying these parameters during concurrent charging tests, the system identifies configurations that maximize charging efficiency while minimizing interference and heating effects.
3Reliability
If comprehensive multi-device testing is performed, then compliance accuracy is improved, but testing time increases
Solution Approach 1:
The master test device performs preliminary setup and configuration for all slave test devices before actual testing begins. Test parameters, device arrangements, and measurement protocols are pre-configured, allowing slave devices to immediately begin concurrent testing without sequential setup delays.
Solution Approach 2:
Multiple slave test devices perform tests simultaneously and continuously rather than sequentially. The master test device continuously collects data from all slave devices, enabling comprehensive compliance testing to be completed in parallel, significantly reducing total testing time while maintaining high accuracy.
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
Enables efficient and accurate testing of wireless power transfer equipment under various conditions, improving compliance testing efficiency and identifying potential issues in multi-device charging scenarios, thereby enhancing product design and safety.
Implementation Method 1
transfer power wirelessly to the mobile device 10 by way of magnetic induction 18 via the wireless power transmitter coil 24 and wireless power receiver coil 14
Data Source
AI summary
A method (200) is disclosed for testing of wireless power transfer equipment (20) that has a plurality of wireless power transmitters (22a-n) adapted for concurrent wireless power transfer to respective wireless power receiver devices (10a, 10a′, 10d). The method comprises providing (210) a number of slave test devices (30a-n), and providing (220) a master test device (40) in communicative connection with the slave test devices (30a-n). The method further comprises arranging (230) each slave test device (30a-n) in a position suitable for receiving power from a respective one of the wireless power transmitters (22a-n) of the wireless power transfer equipment (20) under test, and commanding (240; 110a-n), by the master test device (40), the slave test devices (30a-n) to perform respective test procedures (120a-n) upon the respective wireless power transmitters (22a-n) while being in concurrent operation. Finally, the method comprises receiving (250; 140a-n), by the master test device (40), result data (125a-n) from the respective test procedures (120a-n) performed by the slave test devices (30a-n), and providing (260; 170) an output (45) by the master test device (40), the output (45) being based on the respective result data (125a-n) obtained from the slave test devices (30a-n).