Golf clubs and golf club heads having digital lie and/or other angle measuring equipment

摘要

Golf club heads having sensors configured to measure one or more swing parameters are provided. The golf club head may include several gyroscopes and accelerometers. In one embodiment, the club head contains three gyroscopes that measure angular rate data along different orthogonal axes. At least one gyroscope may an analog gyroscope. Accelerometers may provide data regarding the three orthogonal axes associated with the gyroscopes. The club head may further include software and/or hardware that perform computer-executed methods for determining one or more swing parameters. Exemplary club heads may include a display device for displaying an output of the swing parameter(s). Further aspects of the invention relate to novel methods and algorithms for calculating measurements relating to the swing parameters.

主权项

1. A non-transitory computer-readable medium having computer-readable instructions that when executed by a processor are configured to perform at least:
collecting angular rate data from at least one gyroscope located within a golf club head, wherein the angular rate data comprises data along three different orthogonal axes; collecting acceleration data from at least one accelerometer, wherein the accelerometer data comprises data long each of the three orthogonal axes associated with the gyroscope data; reconstructing at least a portion of saturated sensor data based upon known factors relating to angular velocities of the club head during a swing, executing instructions comprising:
determining that a saturation event was initiated at a first time-frame;determining that the saturation event ended at a second time-frame;calculating a first-order line regression from a plurality of data points before the first time frame and a plurality of data points after the second time frame to obtain a first and a second regression line, wherein the first and the second regression lines meet at an intersection;determining the location of the intersection of the first and second regression line; andutilizing a second-order polynomial function to calculate data points over a time period between the first time-frame and the second time frame of the saturation event, wherein the data points connect the intersection of the first and the second regression lines with the first time-frame and the second time-frame; after determining that an impact event has occurred, executing instructions comprising:
utilizing roll and pitch data and space-fixed coordinates to calculate at least one of a lie angle, a club face angle, and a loft angle of the club head.