Rebound property detector of movement surface course

Abstract

The invention provides a rebound property detector of a movement surface course. The rebound property detector is characterized in that a base is connected to the lower part of a vertically arranged elevation ruler; a bracket is connected to the upper part of the vertically arranged elevation ruler; a height adjusting device is arranged on the elevation ruler; the height adjusting device is connected with the bracket; a ball hook is hinged with the other end of the bracket; the bracket is provided with a pulley; a drawing rope is connected with a fastener through the pulley; the fasten is sleeved on the ball hook; the ball hook is used for clamping the ball body; the ball hook is controlled to hold or release the ball body by drawing or releasing the drawing rope; an infrared probe and a lower computer are installed inside the base; the detection and the calculation on the time difference data when the ball body falls down to the movement surface course are accomplished by the lower computer; the data is transmitted to handheld devices in the hands of testing personnel; and the receiving, processing and display of the data are accomplished through the handheld devices. The rebound property detector is mainly used for measuring the rebound property of the ground of a sport field, and can also be applied to measurement of the rebound property of other grounds.

Description

technical field [0001] The invention provides a sports surface rebound performance detector, especially an instrument for measuring the rebound performance of a sports surface through the rebound height of a ball. Measurement of ground rebound properties. Background technique [0002] The rebound ability of the ball on the wooden floor of the sports ground is one of the main functions of the wooden floor of the sports ground stipulated in Part II of the German (DIN) industrial standard 18032, and it is an indispensable part of the standard test items of the wooden floor of the sports ground. Article 6.2.5 of GB / T20239-2006 "Wooden Flooring for Sports" issued by the General Administration of Inspection and Quarantine in September 2006 completely quoted the rebound rate function and detection method of the ball in the DIN standard. [0003] Its detection method is described as follows: [0004] (1) Detection principle: use a standard basketball to measure the rebound height ...

AI Technical Summary

Problems solved by technology

[0018] 1. During the detection process, the basketball needs to be artificially raised to the required height, and the basketball needs to be controlled manually, which cannot eliminate the influence of human factors

[0019] 2. The data acquisition method in the detection process generally adopts a direct optical acquisition scheme, which cannot eliminate the deviation caused by naked eye recognition

[0020] 3. The direct acoustic scheme is used in the detection process, which cannot eliminate the error caused by environmental noise

[0021] 4. The falling of the ball adopts the manual operation method, which cannot avoid the friction force of the palm on the basketball during the release process.

[0022] 5. The height of the basketball release device is fixed and there is no lifting device, so the stability of the device after a period of use cannot be guaranteed, that is, the reference height of the device cannot be guaranteed

[0023] Chinese patent application 200710011577.2 discloses a "ball rebound altimeter". The altimeter described in this patent application only provides a ball rebound altimeter that has no interference from human factors in the test process and can adjust the falling height of the ball. The rebound rate or rebound height measurement method is not described, it can only be used as an auxiliary mechanical device for the rebound rate measurement, and cannot be directly used to measure the rebound rate of the ground layer of the sports field

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