Segmented tracking and timing method and device for short-track speed skating or speed skating project

Abstract

The invention provides a segmented tracking and timing method and device for a short-track speed skating or speed skating project, and the method comprises the steps: calculating the first positioning time and second positioning time of an athlete when the athlete passes through two adjacent laser timers based on the positioning information, collected by an ultra-wideband positioning device, of any athlete; based on the first positioning time and the second positioning time, querying first line collision time and second line collision time collected by the laser timer; based on the first positioning time, the second positioning time, the first line collision time and the second line collision time, determining a conversion relation between a positioning clock and a laser timer clock between the first laser timer and the second laser timer; and based on the conversion relationship, correcting the positioning time collected by the athlete when the athlete moves between the first laser timer and the second laser timer. According to the invention, the track direction timing error of the ultra-wideband positioning device is reduced, and the track point timing measurement precision under high-speed and fierce racing conditions is significantly improved.

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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