Automatic laser distance calibration kit for wireless charging test system

Abstract

An automated laser calibration kit for calibrating a distance between a testing device and a device-under-test (DUT) of a wireless charging system is disclosed. The calibration kit may be positioned on a wireless charging testing system. The testing system may comprise a testing plane to hold the DUT and a clamp arm to hold the testing device. The calibration kit may comprise a laser pointer configured to emit a laser beam; a reflection mirror positioned on the clamp arm and configured to reflect the laser beam to form a light point on the testing plane; and a camera configured to monitor a position of the light point.

What is claimed is: 
     
         1 . An automated laser calibration kit for calibrating a distance between a testing device and a device-under-test (DUT) of a wireless charging system, wherein the calibration kit is positioned on a wireless charging testing system, and the testing system comprises a testing plane to hold the DUT and a clamp arm to hold the testing device, the calibration kit comprising:
 a laser pointer configured to emit a laser beam;   a reflection mirror positioned on the clamp arm and configured to reflect the laser beam to form a light point on the testing plane; and   a camera configured to monitor a position of the light point.   
     
     
         2 . The calibration kit of  claim 1 , wherein the DUT is a TX coil. 
     
     
         3 . The calibration kit of  claim 1 , wherein the testing device is a RX coil. 
     
     
         4 . The calibration kit of  claim 1 , wherein the reflection mirror is positioned with an angle with respect to the testing plane so that a change in the position of the light point is proportional to a change in the distance between the DUT and the testing device. 
     
     
         5 . The calibration kit of  claim 1 , wherein when the position of the light point overlaps with a reference position, the distance between the DUT and testing device is set as a known value, and wherein both the reference position and the known value are predetermined by a user. 
     
     
         6 . The calibration kit of  claim 1 , further comprising a controller computer configured to receive the position of the light point and automatically control the distance between the DUT and the testing device. 
     
     
         7 . The calibration kit of  claim 1 , further comprising a spatial filter, wherein the spatial filter comprises a convex lens, a concave lens, and a shielding box. 
     
     
         8 . A wireless charging testing system for testing a wireless charging system, comprising:
 a clamp arm configured to hold a testing device;   a testing plane configured to hold a DUT; and   an automated laser calibration kit for calibrating a distance between the testing device and the DUT, wherein the calibration kit comprises:   a laser pointer configured to emit a laser beam;   a reflection mirror positioned on the clamp arm and configured to reflect the laser beam to form a light point on the testing plane; and   a camera configured to monitor a position of the light point.   
     
     
         9 . The testing system of  claim 8 , wherein the DUT is a TX coil. 
     
     
         10 . The testing system of  claim 8 , wherein the testing device is a RX coil. 
     
     
         11 . The testing system of  claim 8 , wherein the reflection mirror is positioned with an angle with respect to the testing plane so that a change in the position of the light point is proportional to a change in the distance between the DUT and the testing device. 
     
     
         12 . The testing system of  claim 8 , wherein when the position of the light point overlaps with a reference position, the distance between the DUT and testing device is set as a known value, and wherein both the reference position and the known value are predetermined by a user. 
     
     
         13 . The testing system of  claim 8 , further comprising a controller computer configured to receive the position of the light point and automatically control the distance between the DUT and the testing device. 
     
     
         14 . The testing system of  claim 8 , further comprising a spatial filter, wherein the spatial filter comprises a convex lens, a concave lens and a shielding box. 
     
     
         15 . A method for calibrating a distance between a testing device and a DUT of a wireless charging system by using an automated laser calibration kit installed on a wireless charging testing system, wherein the testing system comprises a testing plane to hold the DUT, a clamp arm to hold the testing device, and a laser pointer mounted on the clamp arm and configured to form a light point on the testing plane, the method comprising:
 setting a reference position for the light point on the testing plane;   moving the clamp arm relative to the testing plane until the light point coincide with the reference position on the testing plane.   
     
     
         16 . The method of  claim 15 , wherein the DUT is a TX coil, and the testing device is a RX coil.