Over-net ball speed tester for net separating competitive items

A measuring instrument and technology of tennis balls, applied in the field of measuring instrument for crossing tennis balls

Inactive Publication Date: 2012-11-21
宋雅伟
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the net-separated confrontation events, the speed of the ball passing the net directly reflects the quality and level of the athlete's hitting. Knowing the speed of the ball passing the net can provide a direct basis for the correction of the athlete's training methods. A device for direct and indirect detection of net speed

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  • Over-net ball speed tester for net separating competitive items

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with the accompanying drawings.

[0015] like figure 1 Described is a kind of net-separated confrontation item crossing tennis speed measuring instrument, including an infrared emitting device, an infrared receiving device, a data acquisition device and a data processing device, and the infrared emitting device and the infrared receiving device are fixed on a bracket, and the following is Each part is described in detail.

[0016] The infrared emitting device emits infrared rays through the infrared emitting end, and the infrared emitting end is arranged in a rectangular array of 5 rows and 3 columns, and the row spacing and the column spacing between the infrared emitting ends are 5 cm, and the infrared emitting end emits The diameter of the infrared rays is 1cm, and the position of the infrared rays is horizontal.

[0017] The infrared receiving device receives the infrared rays emitted by the corr...

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Abstract

The invention discloses an over-net ball speed tester for net separating competitive items. The tester comprises an infrared emission device, an infrared receiving device, a data collecting device and a data processing device; the infrared emission device emits infrared rays through an infrared emission end; the infrared receiving device receives the infrared rays emitted by the infrared emission red through an infrared receiving end; the infrared rays in the same vertical plane form an infrared net surface; the infrared net surfaces are two or more in number and are parallel to a separating net; the data collecting device collects breakpoint position information and breakpoint time information received by the infrared receiving device and transmits the collected information to the data processing device; and the data processing device computes and analyzes the received information so as to obtain the speed information of an over-net ball. The over-net ball speed tester for net separating competitive items, provided by the invention, can monitor parameters including over-net speed and motion trail of the ball, and is an extensive, effective and scientific auxiliary device designed for various net separating competitive items.

Description

technical field [0001] The invention relates to an auxiliary detection device for sports, in particular to a speed measuring instrument for crossing tennis in net-separated confrontation items. Background technique [0002] In the net-separated confrontation events, the speed of the ball passing the net directly reflects the quality and level of the athlete's hitting. Knowing the speed of the ball passing the net can provide a direct basis for the correction of the athlete's training methods. A device for direct and indirect detection of the speed of passing through the net. Contents of the invention [0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a tennis speed measuring instrument for confrontation items such as net separation, which can detect and analyze the tennis speed, so as to facilitate the coaches to correct the training methods of athletes. [0004] Technical scheme: in order to achieve t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A63B69/38A63B71/06G01P3/68
Inventor 宋雅伟周琪
Owner 宋雅伟
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