Portable standing long jump measuring method

A measurement method and portable technology, which is applied in the direction of measurement devices, radio wave measurement systems, jumping equipment, etc., can solve problems such as not easy to carry, and achieve the effect of reducing volume and increasing portability

Inactive Publication Date: 2018-12-11
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, some automatic long jump measurement devices based on infrared sensor arrays have emerged one after another. These devices usually require a fixed long jump area for installing sensors, controlling the host, etc., and are not easy to carry.
The present invention focuses on solving the limitations of traditional infrared sensor array measurement technology that requires fixed installation, and designs a set of portable long jump measurement methods based on laser scanning radar technology

Method used

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  • Portable standing long jump measuring method
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  • Portable standing long jump measuring method

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Embodiment Construction

[0010] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0011] see figure 1 , The invention provides a portable laser scanning radar standing long jump measuring device. The level bubble meter 1 is used to measure the levelness of the installation ground. If the ground is not level, the effectiveness of the ranging algorithm and the reliability of the two-foot target recognition algorithm will be greatly reduced. The shell fixing device is made of ABS engineering plastic 2, which has good hardness and plasticity. A touch liquid crystal display 3 is used for user and measurement system to interact and display relevant information during long jump measurement. The laser scanning radar sensor 4 scans the laser radar at a speed of about 8 revolutions / second during operation, and sends information to the microcontroller through the USB serial port. USB interface 5, used for external U disk or sending data to facil...

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Abstract

The invention discloses a portable standing long jump measuring method comprising first selecting a horizontal ground by using a bubble level; marking a jump line and an installation position according to a simple installation drawing; starting a laser scanning radar to rotate within 360 degrees to obtain data; enabling a microcontroller to perform software filtering according to pairs of values (angle, distance) transmitted from a sensor to obtain valid data within a virtual boundary; identifying a two-foot target and a noise target by subjecting the valid data values within the boundary to aKmeans clustering algorithm; and obtaining the minimum distance of the two-foot target when feet land to determine a long jump distance. The method greatly reduces the volume of a standing long jumpmeasuring device and increases the portability of the device.

Description

technical field [0001] The invention relates to the technical field of sports equipment, in particular to a measuring method for standing long jump. Background technique [0002] In traditional standing long jump measurement, physical education teachers usually measure the distance with a tape measure on ordinary flat ground, record the scale on the ground with chalk, and record the long jump results by visual inspection. Certain misjudgments and omissions. In recent years, some automatic measurement devices for long jump based on infrared sensor arrays have emerged one after another. These devices usually require a fixed long jump area for installing sensors, controlling the host computer, etc., and are not easy to carry. The invention focuses on solving the limitation that traditional infrared sensor array measurement technology requires fixed installation, and designs a set of portable long jump measurement method based on laser scanning radar technology. Contents of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/08G01S17/88A63B71/06A63B5/16
CPCA63B5/16A63B71/06G01S17/08G01S17/88
Inventor 骆懿金雨鑫于洋吴颖黄怡杨演超
Owner HANGZHOU DIANZI UNIV
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