US 11,959,992 B2
Methods and systems for providing a secondary reference for evaluation of wireless power measuring accuracy, and for evaluating a power measuring accuracy of a wireless power measurement device under test
Laurens Swaans, Malmö (SE); Max Andersson, Malmö (SE); and Arianna Amaya, Malmö (SE)
Assigned to ElectDis AB, Malmö (SE)
Appl. No. 18/247,569
Filed by ElectDis AB, Malmö (SE)
PCT Filed May 11, 2022, PCT No. PCT/EP2022/062818
§ 371(c)(1), (2) Date Mar. 31, 2023,
PCT Pub. No. WO2022/238498, PCT Pub. Date Nov. 17, 2022.
Claims priority of application No. 21173878 (EP), filed on May 14, 2021.
Prior Publication US 2023/0393227 A1, Dec. 7, 2023
Int. Cl. G01R 35/00 (2006.01); H02J 50/10 (2016.01)
CPC G01R 35/007 (2013.01) [H02J 50/10 (2016.02)] 10 Claims
OG exemplary drawing
 
1. A method of evaluating a power measuring accuracy of a wireless power measurement device under test, the method comprising:
providing an inanimate calibration object;
retrieving, from a data storage associated with the calibration object, stored key power absorption parameters for the calibration object together with data that defines operating points;
subjecting the calibration object to electromagnetic field variations by causing the wireless power measurement device to operate at the operating points defined by the retrieved data;
obtaining key power absorption parameters of the calibration object resulting from the electromagnetic field variations; and
comparing the obtained key power absorption parameters and the retrieved key power absorption parameters to obtain a measurement result being indicative of the power measuring accuracy of the wireless power measurement device.