发明名称 |
OPTICAL SENSOR FOR ODOMETRY TRACKING TO DETERMINE TRAJECTORY OF A WHEEL |
摘要 |
An optical sensor system for determining trajectory of a wheel includes: a wheel mounted in a wheel arch having an outer surface covered with evenly-spaced wheel treads; an optical sensor mounted in the wheel arch but not touching the wheel, for performing a plurality of counts corresponding to respectively capturing a plurality of images of the wheel according to the wheel treads, and comparing the captured images with a reference image to determine a 2D displacement. The optical sensor further performs a calculation to convert the measured 2D displacement of the wheel from its original position into a distance the wheel travels along a path in order to determine the wheel trajectory. |
申请公布号 |
US2017124721(A1) |
申请公布日期 |
2017.05.04 |
申请号 |
US201514930668 |
申请日期 |
2015.11.03 |
申请人 |
PixArt Imaging (Penang) SDN. BHD. |
发明人 |
LEONG KEEN-HUN;KOK BOON-HOW;DOMINIC DONALD DENNIS |
分类号 |
G06T7/20;H04N5/247 |
主分类号 |
G06T7/20 |
代理机构 |
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代理人 |
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主权项 |
1. An optical sensor system for determining trajectory of a wheel, the optical sensor system comprising:
a wheel mounted in a wheel arch having an outer surface covered with evenly-spaced wheel treads; and an optical sensor mounted in the wheel arch but not touching the wheel, for performing a plurality of counts corresponding to respectively capturing a plurality of images of the wheel according to the wheel treads, and comparing the captured images with a reference image to determine a 2D displacement; wherein the optical sensor further performs a calculation to convert the measured 2D displacement of the wheel from its original position into a distance the wheel travels along a path in order to determine the wheel trajectory. |
地址 |
Penang MY |