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Inertial measuring system of sport balls

An inertial measurement and ball technology, applied in the field of inertial measurement systems, can solve the problems of high cost, inconvenient use of ball speed measurement technology, inability to display ball trajectory, etc., and achieve the effects of low cost, low power consumption, and light weight

Inactive Publication Date: 2009-10-21
SHENZHEN UNIV
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  • Summary
  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0007] This invention provides an inertial measurement system for sports balls to solve the problems of inconvenient use, high cost and inability to display the trajectory of the ball in the existing ball speed measurement technology

Method used

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  • Inertial measuring system of sport balls
  • Inertial measuring system of sport balls
  • Inertial measuring system of sport balls

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Embodiment Construction

[0032] The following uses the application of the present invention in football as a specific embodiment to illustrate its working process.

[0033] Such as Figure 5 As shown, the six MEMS acceleration sensors 1, 2, 3, 4, 5, 6 are respectively located at the center of the six faces of a cube centered on the center of gravity of the football. The first configuration is adopted, and figure 1 They are consistent, so cubes and arrows to aid understanding are no longer marked here. 7 is a circuit board composed of a single-chip microcomputer and a radio frequency wireless transmitter chip. 8 is an air pressure sensor, 9 is a computer, and 10 is a portable handheld terminal.

[0034] The six acceleration sensors and air pressure sensors are all connected to the circuit board 7. The analog signals output by the six acceleration sensors and air pressure sensors are converted into digital signals by the built-in A / D conversion function of the single-chip microcomputer, and samples are take...

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Abstract

An inertial measuring system of sport balls is suitable for measuring the ball speed, the rotating seed, the three-dimensional animation displaying the movement process and the flying orbit of balls for sports training and competitions. The ball is internally provided with an acceleration sensor to form an inertial measuring unit. The movement state information such as the moving speed, the moving direction, the rotating speed, the rotating direction, the position, the accelerating curve and the angle accelerating curve of the ball is calculated through the collection of signals of the accelerating sensor in the ball and the calculation and the processing by a processor or a programmable chip and then is output and displayed. In addition, the moving process and flying orbit of the ball can be displayed by a graphic technique.

Description

Technical field [0001] The invention relates to an inertial measurement system suitable for sports balls, in particular to an inertial measurement system for sports balls such as football, basketball, volleyball, rugby, shot put, solid ball, tennis and the like. Background technique [0002] At present, the main technology used in sports to measure ball speed is radar speed measurement. The principle is to emit electromagnetic waves to a moving object. According to the Doppler effect, the frequency of the reflected electromagnetic wave changes, so that the speed of the moving object can be measured. This is the most commonly used speed measurement method in ball sports at present. Its disadvantage is that it needs to be tested against the ball when it is flying out. It will not be tested because the players on the field block it. The test distance is short, about 20 meters. , So it is mostly used in tennis matches where the court is small and there are few players on the court. A...

Claims

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Application Information

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IPC IPC(8): G01P15/00G01P1/07G01M3/26A63B71/06A63B43/00
Inventor 陈昱全李学金
Owner SHENZHEN UNIV
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