NL2027231B1 - Detecting device, detecting system and detecting method for flatness of moving ground - Google Patents

Abstract

The present invention discloses a detecting device, detecting system and detecting method for flatness of a moving ground. The detecting device for flatness of the moving ground comprises: a spindle, vertically arranged on a to-be-detected ground; a tripod, wherein a cross bar of the tripod is vertically fixed on the spindle and can rotate horizontally around the spindle, and one end of the cross bar is a ruler slide rail; a rotary driver, fixed on the spindle, connected with the cross bar and used to drive the cross bar to rotate horizontally; and a laser range finder, arranged on the ruler slide rail of the cross bar, capable of sliding horizontally along the ruler slide rail and used to measure surface heights in different positions on the to-be-detected ground. The detecting device for flatness of the moving ground in the present invention drives the ruler slide rail and the laser range finder to rotate through the rotary driver to measure the surface heights in different positions of the to-be-detected ground under different measurement radii and further determine the relative height difference of all points within the range ofa measured plane, thereby effectively determining the flatness of the to-be-detected ground.

Description

DETECTING DEVICE, DETECTING SYSTEM AND DETECTING METHOD FOR

FLATNESS OF MOVING GROUND Technical Field The present invention relates to the technical field of ground measurement, and particularly relates to a detecting device, detecting system and detecting method for flatness of a moving ground.

Background Sports venues are mainly comprehensive playgrounds suitable for entertainment performances, fitness, training and competitions held in sport fields. High-level professional competitions such as CBA and NBA are generally held on dedicated sports floors, and relevant indicators such as flatness of the sports floors must be detected by professional organizations. Sports wood floors can be operated only after relevant technical indicators meet the requirements specified in national standards.

The flatness indicator of the moving ground of the sports venues directly affects the performance of the technical level of athletes, sports injury, fatigue, and even personal safety. At present, the ground of most professional sports venues in China is made of elastic body such as sports wood floors or rubber. The structural layers of the ground are affected by the change of basic ground flatness, frequency of use, indoor and outdoor ambient air temperature and humidity, and illumination. The surface layer and the overall structure of a professional moving ground are easily deformed, which may cause local unevenness or height dislocation on the surface layer. Not only the performance of the sports venues is influenced, but also people exercising on the ground may suffer from major potential safety hazards.

The existing surface detectors of the professional moving ground mainly focus on the detection of surface wear resistant performance, friction performance, elasticity and hardness of the surface layer. Detecting equipment, detecting methods and quality judgment for the surface flatness of the moving ground are only limited to macroscopic and simple detecting tools and methods to define standard values, and cannot measure the flatness of the ground in designated regions and the relative height difference of multiple points. Thus, the flatness of the sports venues is greatly different; the requirements of high-standard sports events and activities cannot be satisfied; and the development of the sports industry and the popularization of construction standardization of the professional moving ground are limited.

Summary The purpose of the present invention is to provide a detecting device for flatness of a moving ground, which can effectively realize measurement, defect identification and analysis evaluation for the flatness of the ground.

To achieve the above purpose, the present invention provides the following technical solution: A detecting device for flatness of a moving ground is provided. The detecting device for flatness of the moving ground comprises: a spindle, vertically arranged on a to-be-detected ground; a tripod, wherein a cross bar of the tripod is vertically fixed on the spindle and can rotate horizontally around the spindle, and one end of the cross bar is a ruler slide rail; a rotary driver, fixed on the spindle, connected with the cross bar and used to drive the cross bar to rotate horizontally; a laser range finder, arranged on the ruler slide rail of the cross bar, capable of sliding harizontally along the ruler slide rail and used to measure surface heights in different positions on the to-be-detected ground.

Optionally, the detecting device for flatness of the moving ground also comprises: a base fixedly connected with the spindle.

Optionally, the base is a tripod base.

Optionally, the tripod has an integrated structure.

Optionally, the tripod is made of alloy.

Optionally, the laser range finder is a reflective triangular laser range finder.

According to specific embodiments provided by the present invention, the present invention discloses the following technical effects: The detecting device for flatness of the moving ground in the present invention drives the laser range finder to rotate through the rotary driver to measure the surface heights in different positions of the to-be-detected ground under different measurement radii and further determine the relative height difference of multiple points, thereby effectively determining the flatness of the to-be-detected ground.

Another purpose of the present invention is to provide a detecting system for flatness of a moving ground, which can effectively realize measurement, defect identification and analysis evaluation for the flatness of the ground.

To achieve the above purpose, the present invention provides the following technical solution: A detecting system for flatness of a moving ground is provided. The detecting system comprises: the above detecting device for flathess of the moving ground; and a control device used for determining the flatness of the to-be-detected ground according to the surface heights in different positions of the to-be-detected ground measured by the detecting device for flatness of the moving ground.

Optionally, the control device is also used for determining corresponding measurement positions in the to-be-detected ground according to a measurement starting point, measurement time and measurement radius of the laser range finder, and rotation speed of the rotary driver.

Relative to the prior art, the detecting system for flatness of the moving ground in the present invention has the same beneficial effects as the detecting device for flatness of the moving ground, and will not be repeated herein.

Another purpose of the present invention is to provide a detecting method for flatness of a moving ground, which can effectively realize measurement, defect identification and analysis evaluation for the flatness of the ground.

To achieve the above purpose, the present invention provides the following technical solution: A detecting method for flatness of the moving ground is provided. The detecting method for flatness of the moving ground uses the detecting device for flatness of the moving ground or the detecting system for flatness of the moving ground. The detecting method comprises: repeatedly adjusting the position of the laser range finder on the ruler slide rail to adjust the measurement radius of the laser range finder as Rn, wherein n represents the number of adjustments, n=1,...,N, and N22, and the measurement radius after adjustment each time is not equal, driving, by the rotary driver, the cross bar to rotate by 360° at set rotation speed, so that the laser range finder measures the surface height of the to-be-detected ground in a circle with a radius of Rn; determining the flatness of the to-be-detected ground in a circle region with a radius of Rn- R1 according to the surface heights measured by the laser range finder under different measurement radii.

Optionally, the detecting method for flatness of the moving ground also comprises: determining corresponding measurement positions in the to-be-detected ground according to a measurement starting point, measurement time and measurement radius of the laser range finder, and rotation speed of the rotary driver.

Relative to the prior art, the detecting method for flatness of the moving ground in the present invention has the same beneficial effects as the detecting device for flatness of the moving ground, and will not be repeated herein.

Description of Drawings To more clearly describe the technical solutions in the embodiments of the present invention or in prior art, the drawings required to be used in the embodiments will be simply presented below. Apparently, the drawings in the following description are merely some embodiments of the present invention, and for those skilled in the art, other drawings can also be obtained according to these drawings without contributing creative labour.

Fig. 1 is a structural schematic diagram of a detecting device for flatness of a moving ground in the present invention; Fig. 2 is a schematic diagram of a modular structure of a detecting system for flatness of a moving ground in the present invention; Fig. 3 is a flow chart of a detecting method for flatness of a moving ground in the present invention; and Fig. 4 is a schematic diagram of measurement regions under different measurement radii.

Reference Signs: spindle 1 tripod 2 cross bar 21 ruler slide rail 211 rotary driver 3 laser range finder 4 base 5 fastening bolt 6 to-be-detected ground 7.

Detailed Description The technical solution in the embodiments of the present invention will be clearly and fully described below in combination with the drawings in the embodiments of the present invention. Apparently, the described embodiments are merely part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those ordinary skilled in the art without contributing creative labour will belong to the protection scope of the present invention.

The purpose of the present invention is to provide a detecting device for flatness of a moving ground, which drives a laser range finder to rotate through a rotary driver to measure the surface heights in different positions of the to-be-detected ground under different measurement radii and further determine the relative height difference of multiple points, thereby effectively determining the flatness of the to-be-detected ground.

To make the above-mentioned purpose, features and advantages of the present invention more clear and understandable, the present invention will be further described below in detail in combination with the drawings and specific embodiments.

As shown in Fig. 1, the detecting device for flatness of the moving ground in the present invention comprises a spindle 1, a tripod 2, a rotary driver 3 and a laser range finder 4, wherein the spindle 1 is vertically arranged on a to-be-detected ground 7; a cross bar 21 of the tripod 2 is vertically fixed on the spindle 1 and can rotate horizontally around the spindle 1, and one end of the cross bar 21 is a ruler slide rail 211; the rotary driver 3 is fixed on the spindle 1, connected with the cross bar 21 and used to drive the cross bar 21 to rotate horizontally; the laser range finder 4 is arranged on the ruler slide rail 211 of the cross bar 21, capable of sliding horizontally along the ruler slide rail 211 and used to measure surface heights in different positions on the to- be-detected ground 7.

In the present embodiment, the laser range finder 4 is a reflective triangular laser range finder to measure the surface heights on the to-be-detected ground 7. The measurement accuracy is high, and measurement data can be recorded directly in a computer for the convenience of analysis.

5 In order to make the position of the spindle unchanged when the cross bar 21 rotates horizontally along the spindle 1, the detecting device for flatness of the moving ground in the present invention also comprises a base 5 which is fixedly connected with the spindle 1. As a preferred solution, the base 5 is a tripod base.

Further, the tripod 2 has an integrated structure to ensure stability and accuracy during operation. In the present embodiment, the top end of the tripod 2 is fixed on the spindle 1 by a fastening bolt 6. The tripod 2 is made of alloy, but is not limited to this.

Another purpose of the present invention is to provide a detecting system for flatness of a moving ground. As shown in Fig. 2, the detecting system for flatness of the moving ground in the present invention comprises a detecting device for flatness of the moving ground and a control device, wherein the control device is used for determining the flatness of the to-be-detected ground according to the surface heights in different positions of the to-be-detected ground measured by the detecting device for flatness of the moving ground.

Further, the control device is also used for determining corresponding measurement positions in the to-be-detected ground according to a measurement starting point, measurement time and measurement radius of the laser range finder, and rotation speed of the rotary driver.

The present invention is described below in detail through specific embodiments: Firstly, the detecting device for flatness of the moving ground is put into the to-be-detected ground; the reflective triangular laser range finder is adjusted to the radius R1 to be measured {the value of R1 can be read out from the ruler slide rail 211); a centre point and a starting measurement point of a measurement region are recorded; the rotation speed a (degree/second) and the starting rotation position of the rotary driver 3 are set as 0; and the signal acquisition frequency b (time/second) of the reflective triangular laser range finder is set. The tripod rotates around the spindle 1 at constant speed after measurement begins. The reflective triangular laser range finder records the surface heights in the measured positions. The cross bar 21 stops rotating after rotating by 360°. At this moment, the flatness data of a circle surface with the radius of R1 is measured. The reflective triangular laser range finder is adjusted to a radius R2 to be measured to repeat the above operation. Finally, the data collected by the reflective triangular laser range finder can be used to draw a measurement plane of circle regions with the radii of RN-R1 and to determine the relative height difference of multiple points. The specific position of a point can also be determined according to the starting measurement point and the measurement time t x rotation speed a and the measurement radius RN for appropriate treatment and repair.

In addition, the present invention also provides a detecting method for flatness of the moving ground. The detecting method for flatness of the moving ground uses the above detecting device for flatness of the moving ground or the above detecting system for flatness of the moving ground for detection.

As shown in Fig. 3, the detecting method for flatness of the moving ground in the present invention also comprises: Step 100: repeatedly adjusting the position of the laser range finder on the ruler slide rail to adjust the measurement radius of the laser range finder as Rn, wherein n represents the number of adjustments, n=1,...,N, and N22, and the measurement radius after adjustment each time is not equal (as shown in Fig. 4, the measurement radius is adjustable).

Step 200: driving, by the rotary driver, the cross bar to rotate by 360° at set rotation speed, so that the laser range finder measures the surface height of the to-be-detected ground in a circle with a radius of Rn.

Step 300: determining the flatness of the to-be-detected ground in a circle region with a radius of Rn-R1 according to the surface heights measured by the laser range finder under different measurement radii.

Further, the detecting method for flatness of the moving ground in the present invention also comprises: determining corresponding measurement positions in the to-be-detected ground according to a measurement starting point, measurement time and measurement radius of the laser range finder, and rotation speed of the rotary driver for further analysis and repair.

Each embodiment in the description is described in a progressive way. The difference of each embodiment from each other is the focus of explanation. The same and similar parts among all of the embodiments can be referred to each other.

Specific individual cases are applied herein for elaborating the principle and embodiments of the present invention. The illustration of the above embodiments is merely used for helping to understand the method and the core thought of the present invention. Meanwhile, for those ordinary skilled in the art, specific embodiments and the application scope may be changed in accordance with the thought of the present invention. In conclusion, the contents of the description shall not be interpreted as a limitation to the present invention.

Claims (10)

CONCLUSIONS A moving bottom flatness detecting device, the moving bottom flatness detecting device comprising: — a spindle placed vertically on a bottom to be detected; — a tripod, in which a crossbar of the tripod is mounted vertically on the spindle and can rotate horizontally around the spindle, one end of the crossbar is a ruler slide rail; — a rotary drive mounted on the spindle, which is connected to the cross-beam and is used to drive the cross-beam so that it can rotate horizontally; — a laser rangefinder, placed on the ruler slide rail of the crossbeam, which can slide horizontally along the ruler slide rail and is used to measure the surface height in different positions on the soil to be detected. The moving bottom flatness detecting device according to claim 1, wherein the moving bottom flatness detecting device also comprises: - a base fixedly connected to the spindle. The moving bottom flatness detecting apparatus according to claim 1, wherein the base is a tripod base. The moving bottom flatness detecting device according to any one of claims 1 to 3, wherein the tripod has an integrated structure. The moving bottom flatness detecting device according to any one of claims 1 to 3, wherein the tripod is made of an alloy. The moving bottom flatness detecting apparatus according to any one of claims 1 to 3, wherein the laser rangefinder is a reflective triangular laser rangefinder. 7. A system for detecting flatness of a moving bottom, the detection system comprising: - the moving bottom flatness detecting device according to any one of claims 1 to 6; and — a checking instrument used to determine the flatness of the soil to be detected from the surface heights in different positions of the soil to be detected, measured by the moving soil flatness detecting device. The system for detecting flatness of a moving bottom according to claim 7, wherein the checking instrument is also used for determining corresponding measurement positions in the ground to be detected according to a measurement starting point, measurement time and measurement radius of the laser rangefinder , and the rotational speed of the rotary drive. A method for detecting flatness of a moving bottom, wherein the method for detecting flatness of a moving bottom for the flatness of a moving ground uses the flatness detecting device of a moving bottom according to arbitrary which of claims 1 to 6 or the moving floor flatness detection system according to claim 7 or 8, and comprises: - repeatedly adjusting the position of the laser rangefinder on the ruler slide rail to adjust the measuring radius of the laser rangefinder to be set as Rn, where n stands for the number of adjustments, wheren = 1, … N, and N 2 2, and the measuring radius after adjustment is not the same each time; — driving the crossbeam by the rotary drive to rotate it 360° at a set rotational speed, so that the laser rangefinder measures the surface height of the soil to be detected in a circle of radius Rn; — determining the flatness of the soil to be detected in a circle area with a radius of Rn - R1 according to the surface heights measured by the laser rangefinder under different measuring radii. The method for detecting flatness of a moving bottom according to claim 9, wherein the method for detecting flatness of a moving bottom also comprises: - determining corresponding measurement positions in the soil to be detected according to a measurement starting point, measurement time and measurement radius of the laser rangefinder, and the rotational speed of the rotary drive.