Segment tracking timing method and device for short track speed skating or speed skating events

Abstract

The present invention provides a segment tracking timing method and device for short-track speed skating or speed skating events, wherein the method includes: based on the positioning information of any athlete collected by an ultra-wideband positioning device, calculating the time when the athlete passes through two adjacent laser beams The first positioning time and the second positioning time of the timer; based on the first positioning time and the second positioning time, query the first line-crossing time and the second line-crossing time collected by the laser timer; based on the first positioning time, the second 2. Positioning time, the first line-crossing time and the second line-crossing time, determine the conversion relationship between the positioning clock and the laser timer clock between the first laser timer and the second laser timer; The positioning time collected while moving between the first laser timer and the second laser timer is corrected. The invention reduces the track direction timing error of the ultra-broadband positioning device, and realizes significant improvement of track point timing measurement accuracy under high-speed and fierce racing conditions.

Description

technical field [0001] The invention relates to the technical field of high-precision positioning, in particular to a segment tracking timing method and device for short-track speed skating or speed skating events. Background technique [0002] Short track speed skating / speed skating athlete trajectory measurement and full time calculation involve technologies such as identification of athletes in the competition scene, on-court position detection, and segment time measurement. Due to short track speed skating and speed skating competitions The skating speed of mid-level athletes can reach 50km / h, and the distance between each other is at the decimeter level in the fierce racing state. High sampling time accuracy and measurement space accuracy have put forward extremely high requirements. [0003] At present, the time or speed measuring devices commonly used in short-track speed skating and speed skating events are mostly composed of laser timers and high-speed cameras, and...

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a segment tracking timing method and device for short-track speed skating or speed skating events to solve the defect of inaccurate sampling time of UWB positioning system in the prior art

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