DEVICE FOR BALL KICKBACK MEASUREMENT Russian patent published in 2019 - IPC A63B21/00 

FIELD: sports.

SUBSTANCE: invention can be used in sports games, for example, in golf and/or mini-golf, as a measuring device for determining parameters of playing balls and properties of coatings of playgrounds. Device comprises a housing with a device for fixing the initial position of ball 4 and releasing it from a fixed height, electronic unit 2 determining height of ball rebound, wherein housing 1 is made in form of rectangular frame 1 with zone 3, sensitive to ingress of ball 4, wherein rectangular frame 1 is installed horizontally on cover 5 of playground with provision of vertical projection of ball 4 penetration into sensitive zone 3 of frame 1, containing point light-emitting elements 6, arranged with regular pitch along one of inner sides of said frame, and photoreceiving elements 7 located on the opposite inner side of frame 1 and optically connected to said radiating elements 6, wherein light-emitting elements 6 and photodetectors 7 are connected to electronic unit 2 determining the height of ball rebound 4. Electronic unit 2 for determining the height of rebound of ball 4 comprises shaper 8 of time interval between the moment of the first rebound of ball from coating 5 of playground and the moment of its repeated falling into working zone of sensitive rectangular frame 1, pulse generator 9, switch 10, counter 11, microprocessor computer 12 of the rebound height by the measured time interval and digital indicator 13 of the rebound height, wherein the output of the time interval former 8 is connected to the first input of switch 10, second input of which is connected to output of pulse generator 9, output of which is connected to input of counter 11, output of which is connected to data input of microprocessor computer 12 of rebound height, which output is connected to input of digital indicator 13 of rebound height. Point light-emitting elements are in form of LEDs of the infrared range. Device for fixation of initial position of ball and its release from fixed height includes telescopic posts 15, on upper ends of which platform 16 with mechanism of ball 4 is fixed.

EFFECT: technical result is higher accuracy of measurement.

4 cl, 6 dwg