A distance measuring device for long-distance jumping events

Abstract

The application discloses a distance measuring device for long-distance jumping events, and relates to the technical field of distance measuring devices, comprising a take-off detection mechanism, a result detection mechanism, a control unit and a sand leveling mechanism, one end of the sandpit is provided with a take-off board, one end of the take-off board is flush with the take-off line, the take-off detection mechanism is flush with the take-off line, the result detection mechanism and the sand leveling mechanism are both arranged on the side of the sandpit, the take-off detection mechanism, the result detection mechanism and the sand leveling mechanism are all in communication connection with the control unit, and the control unit can display and voice broadcast the process, detection data and result. The take-off detection mechanism and the result detection mechanism are comprehensively detected, the distance measurement of the long-distance jumping event is ensured to be accurate and in line with the competition rules, the plug-in rod is not used for judgment, the measurement speed is fast, the automatic score interpretation is realized, and the competition process is not affected; the sand leveling mechanism can level the sand surface when the athlete gets up and leaves the sandpit, and the competition progress is accelerated.

Description

Technical Field

[0001] The present invention relates to the technical field of distance measuring devices, in particular to a distance measuring device for long-distance jumping events. Background Art

[0002] In distance jumping events, such as the long jump and triple jump, distance measurement is required to capture and record athlete performance. Traditional distance jumping tests are typically conducted in a sand pit. Students taking the long jump test stand at the take-off point and then jump into the pit. At least two other testers then place a measuring tape at the take-off point and the landing point to read the performance. A dedicated score recorder typically also manually records the performance. Therefore, traditional testing methods require at least two or three additional score recorders, resulting in significant wasted personnel and low efficiency.

[0003] With the development of measurement technology, various distance measuring instruments, such as laser rangefinders, infrared rangefinders, and ultrasonic rangefinders, have been introduced. These instruments have been used to measure and obtain results at major sporting events. However, the use of these distance measuring instruments still requires on-site manual intervention. For example, with electronic laser ranging (EDM) systems, one person operates the instrument while another person enters the sand pit to insert the laser rangefinder prism rod at the selected landing point and maintain it vertically. This increases measurement time and makes the entire competition schedule less compact. Furthermore, manual operation can inadvertently damage the traces left by athletes in the sand pit or cause measurement errors due to inaccurate operation. Therefore, a distance measurement device is urgently needed to address these technical issues. Summary of the Invention

[0004] The object of the present invention is to provide a distance measuring device for long-distance jumping events, so as to solve the problems existing in the above-mentioned prior art and make the distance measurement operation of long-distance jumping events faster and more accurate.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides a distance measuring device for long-distance jumping events, comprising a take-off detection mechanism, a result detection mechanism, a control unit, and a sand-leveling mechanism. A take-off board is provided at one end of a sand pit, one end of the take-off board is flush with a take-off line, the take-off detection mechanism is arranged flush with the take-off line, the result detection mechanism and the sand-leveling mechanism are both arranged at the side of the sand pit, the take-off detection mechanism, the result detection mechanism, and the sand-leveling mechanism are all communicatively connected to the control unit, and the control unit can display and voice broadcast progress, detection data, and results.

[0007] Preferably, the jump detection mechanism is a pair of infrared radiation sensors, which are arranged at both ends of the jump line and emit infrared rays at a height of no more than 2 cm from the ground.

[0008] Preferably, the result detection mechanism includes a measuring light curtain and an image detection mechanism, the two measuring light curtains are symmetrically arranged on both sides of the sand pit and the starting points of the measuring light curtains are flush with the starting line, and the image detection mechanism is slidably arranged on a sliding mechanism, and the sliding mechanism is arranged along the length direction of the sand pit.

[0009] Preferably, the accuracy of the measuring light curtain is 1 mm, and the infrared ray is no more than 3 cm away from the sand surface.

[0010] Preferably, the upper surface of the measuring light curtain is inclined toward the inside of the sand pit, and the upper surface of at least one measuring light curtain is provided with scale lines, the accuracy of the scale lines is 1 mm, and the upper surface of at least one measuring light curtain is provided with a centering line, and the centering line is collinear with one of the scale lines.

[0011] Preferably, the image detection mechanism includes a camera capable of image recognition and a rotating seat, the rotating shaft of the rotating seat is connected to the camera, and the rotating seat is connected to the sliding mechanism.

[0012] Preferably, the rotation accuracy of the rotating base is 0.5°, and the distance between the camera and the sand surface is no more than 10 cm.

[0013] Preferably, the sliding mechanism includes a guide groove and an electric translation trolley, the guide groove is cross-shaped and is arranged on one side of the sand pit, a guide rod is provided in the guide groove, the guide groove is located on the outside of the measuring light curtain, the rollers of the electric translation trolley are rolled in the grooves on both sides of the guide groove, and the vehicle body is located in the vertical groove in the middle of the guide groove, the guide rod passes through the vehicle body, the image detection mechanism is connected to the vehicle body, and the electric translation trolley is communicatively connected to the control unit.

[0014] Preferably, the sand-leveling mechanism includes two and is relatively arranged on the outside of the result detection mechanism, the sand-leveling mechanism includes a scraper, a rocker arm, a lifting mechanism and a swing motor, the lifting mechanism is arranged on the flat ground on both sides of the sand pit, the swing motor is arranged on the top of the lifting mechanism, the swing motor is connected to the rotating shaft of the swing motor, a counterweight is provided at one end of the rocker arm, and the scraper is inserted below the other end, the counterweight is arranged close to the connection between the rocker arm and the swing motor, and the scraper can scrape the sand surface in the sand pit flat.

[0015] Preferably, the length of the swing rod is greater than half the width of the sand pit, and the swing motors rotate in opposite directions and work in a forward and backward manner.

[0016] Compared with the prior art, the present invention has achieved the following technical effects:

[0017] The comprehensive detection of the take-off detection mechanism and the result detection mechanism of the present invention ensures that the distance measurement of the long jump event is accurate and complies with the competition rules, realizes the judgment without inserting a rod, has a fast measurement speed, and automatically interprets the results without affecting the progress of the competition; the sand leveling mechanism can level the sand surface when the athlete stands up and leaves the sand pit, speeding up the progress of the competition. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 Schematic diagram of the structure of the distance measuring device for long-distance jumping events in an embodiment of the present invention Figure 1 ;

[0020] Figure 2 Schematic diagram of the structure of the distance measuring device for long-distance jumping events in an embodiment of the present invention Figure 2 ;

[0021] Figure 3 Schematic diagram of the structure of the image detection mechanism in an embodiment of the present invention;

[0022] Figure 4 Schematic diagram of the structure of the sand leveling mechanism in an embodiment of the present invention;

[0023] In the figure: 1-sand pit, 2-taking off board, 3-taking off line, 4-infrared radiation sensor, 5-measuring light curtain, 6-centering line, 7-scale line, 8-camera, 9-rotating seat, 10-guide groove, 11-electric translation trolley, 12-guide rod, 13-lifting mechanism, 14-rocker arm, 15-scraper, 16-counterweight, 17-swing motor, 18-display, 19-speaker. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] The purpose of the present invention is to provide a distance measuring device for long-distance jumping events, so as to solve the problems existing in the prior art and make the distance measurement operation of long-distance jumping events faster and more accurate.

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] like Figures 1 to 4 As shown, this embodiment provides a distance measuring device for long jump events, including a take-off detection mechanism, a result detection mechanism, a control unit, and a sand leveling mechanism. A take-off board 2 is provided at one end of a bunker 1, one end of which is flush with a take-off line 3. The take-off detection mechanism is flush with the take-off line 3. The result detection mechanism and the sand leveling mechanism are all provided on the side of the bunker 1. The take-off detection mechanism, the result detection mechanism, and the sand leveling mechanism are all communicatively connected to the control unit. The control unit preferably includes a computer, a display 18, and a speaker 19, enabling the control unit to display and voice broadcast the progress, detection data, and results. The entire competition process can minimize manual intervention, ensure the accuracy of measurement data, and reduce manual labor intensity.

[0028] As an optional solution, the jump detection mechanism in this embodiment comprises a pair of infrared beam sensors 4, which are positioned at both ends of the jump line 3. The infrared beam sensors 4 emit infrared light at a height of no more than 2 cm from the ground, preferably 1 cm, to ensure more accurate measurement data. When an athlete jumps, the sensors can determine whether they have crossed the line, and the data is then transmitted to the control unit to determine whether they have violated the rules of the competition.

[0029] As an optional solution, the result detection mechanism in this embodiment includes a measuring light curtain 5 and an image detection mechanism. The two measuring light curtains 5 are symmetrically arranged on both sides of the sand pit 1 and the starting point of the measuring light curtain 5 is flush with the jump line 3 to ensure that the measurement reference is correct. The image detection mechanism is slidably arranged on the sliding mechanism, and the sliding mechanism is arranged along the length direction of the sand pit 1, which facilitates the image detection mechanism to collect data on the vertical surface and avoid data distortion.

[0030] As an optional solution, the measurement light curtain 5 in this embodiment has an accuracy of 1mm, and the infrared light is no more than 3cm away from the sand surface. In this embodiment, the measurement light curtain 5 is placed at the edge of the sand pit 1, which can provide preliminary detection of the landing position of the athlete's feet or other body parts throughout the landing process. Combined with the image data collected by the vertical plane of the image detection mechanism, the athlete's jumping performance can be more accurately determined.

[0031] As an optional solution, in this embodiment, the upper surface of the measuring light curtain 5 is tilted toward the interior of the bunker 1. At least one measuring light curtain 5 is provided with scale lines 7 on its upper surface, with a precision of 1 mm. At least one measuring light curtain 5 is also provided with a centering line 6 on its upper surface, collinear with one of the scale lines 7. Before a match, the centering line 6 and scale lines 7 can be used to adjust the position of the image detection mechanism's camera 8 perpendicular to the length of the bunker 1. The placement of scale lines 7 also facilitates data comparison during image acquisition by camera 8, allowing for the preservation of photos of the results. If errors occur and a review of the results is required, the photos can be retrieved for manual verification.

[0032] As an optional solution, the image detection mechanism in this embodiment includes a camera 8 capable of image recognition and a rotating base 9. The rotating shaft of the rotating base 9 is connected to the camera 8 to facilitate adjustment of the angle of the camera 8. The rotating base 9 is connected to the sliding mechanism. The camera 8 can record the limb movement process of the athlete on the sand surface by rotating in the early stage.

[0033] As an optional solution, in this embodiment, the rotation accuracy of the rotating seat 9 is 0.5°, and the camera 8 is no more than 10 cm away from the sand surface, which is convenient for close-up and intuitive observation of the actual situation of the sand surface while avoiding interference with the movement of the scraper 15.

[0034] As an optional solution, the sliding mechanism in this embodiment includes a guide groove 10 and an electric translation trolley 11. The guide groove 10 is cross-shaped and is arranged on one side of the sand pit 1. A guide rod 12 is provided in the guide groove 10. The guide groove 10 is located outside the measuring light curtain 5. The rollers of the electric translation trolley 11 are arranged to roll in the grooves on both sides of the guide groove 10, and the trolley body is located in the vertical groove in the middle of the guide groove 10 to prevent the rollers of the electric translation trolley 11 from moving. The guide rod 12 runs through the trolley body, further ensuring the accuracy of the movement of the electric translation trolley 11 parallel to the sand pit 1. The trolley body is connected to the image detection mechanism, and the electric translation trolley 11 is communicatively connected to the control unit. Among them, the electric translation trolley 11 can be a commonly used intelligent electric control trolley in the field.

[0035] As an optional solution, in this embodiment, the sand-leveling mechanism includes two units, which are arranged oppositely to the outside of the result detection mechanism. The sand-leveling mechanism includes a scraper 15, a pendulum 14, a lifting mechanism 13, and a swing motor 17. The lifting mechanism 13 is arranged on the flat ground on both sides of the sand pit 1 to facilitate adjustment of the distance between the scraper 15 and the sand surface. At the same time, the scraper 15 needs to be raised during rotation to prevent the scraper 15 from contacting the ground. The swing motor 17 is arranged on the top of the lifting mechanism 13. The swing motor 17 is connected to the swing rod 14 on its rotating shaft. A counterweight 16 is provided at one end of the swing rod 14, and the scraper 15 is inserted below the other end to ensure the balance of the swing rod 14. The scraper 15 is removable for easy replacement and maintenance. The counterweight 16 is arranged near the connection between the swing rod 14 and the swing motor 17. The scraper 15 can level the sand surface in the sand pit 1. The positions of the lifting mechanism 13 and the swing motor 17 are interchangeable. The lifting mechanism 13 is preferably an electric push rod.

[0036] As an optional solution, in this embodiment, the length of the swing rod 14 is greater than half the width of the sand pit 1, and it covers the middle area (the area where jumping is concentrated) as much as possible to ensure that the pit surface can be put into use directly after scraping the sand. The two swing motors 17 rotate in opposite directions and rotate one in front and the other in back to avoid motion interference. At the same time, the sand scraping directions are opposite, which can just make the sand surface flat.

[0037] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A distance measuring device for long jump events, characterized by: The device comprises a take-off detection mechanism, a result detection mechanism, a control unit and a sand leveling mechanism. A take-off board is provided at one end of the bunker, one end of the take-off board is flush with the take-off line, the take-off detection mechanism is provided flush with the take-off line, the result detection mechanism and the sand leveling mechanism are both provided at the side of the bunker, the take-off detection mechanism, the result detection mechanism and the sand leveling mechanism are all communicatively connected to the control unit, and the control unit can display and voice broadcast the progress, detection data and results; The result detection mechanism includes a measuring light curtain and an image detection mechanism. The two measuring light curtains are symmetrically arranged on both sides of the bunker, and the starting points of the measuring light curtains are flush with the starting line. The upper surfaces of the measuring light curtains are inclined toward the bunker. The upper surface of at least one of the measuring light curtains is provided with scale lines with an accuracy of 1 mm. The upper surface of at least one of the measuring light curtains is provided with a centering line, and the centering line is arranged collinearly with one of the scale lines. The image detection mechanism includes a camera capable of image recognition and a rotating seat, the rotating shaft of the rotating seat is connected to the camera, and the rotating seat is connected to a sliding mechanism; the image detection mechanism is slidably arranged on a sliding mechanism, and the sliding mechanism is arranged along the length direction of the bunker; The measuring light curtain is set at the edge of the sand pit and can perform preliminary detection of the landing position of the athlete's feet or other body parts during the entire landing process. Combined with the image data collected by the vertical plane of the image detection mechanism, the athlete's jumping results can be accurately obtained; The upper surface of the measuring light curtain is inclined toward the inside of the sand pit; The sand leveling mechanism includes two and is relatively arranged on the outside of the result detection mechanism. The sand leveling mechanism includes a scraper, a swing rod, a lifting mechanism and a swing motor. The lifting mechanism is set on the flat ground on both sides of the sand pit. The swing motor is set on the top of the lifting mechanism. The swing motor is connected to the swing rod on the rotating shaft. A counterweight is set at one end of the swing rod, and the scraper is inserted below the other end. The counterweight is set near the connection between the swing rod and the swing motor. The scraper can scrape the sand surface in the sand pit flat. The length of the swing rod is greater than half the width of the bunker.

2. The distance measuring device for long jump events according to claim 1, characterized in that: The jump detection mechanism is a pair of infrared radiation sensors, which are arranged at both ends of the jump line and emit infrared rays at a height of no more than 2 cm from the ground.

3. The distance measuring device for long jump events according to claim 1, characterized in that: The accuracy of the measuring light curtain is 1 mm, and the infrared ray is no more than 3 cm away from the sand surface.

4. The distance measuring device for long jump events according to claim 1, characterized in that: The rotation accuracy of the rotating base is 0.5°, and the distance between the camera and the sand surface is no more than 10 cm.

5. The distance measuring device for long-distance jumping events according to claim 1, characterized in that: The sliding mechanism includes a guide groove and an electric translation trolley. The guide groove is cross-shaped and is arranged on one side of the sand pit. A guide rod is arranged in the guide groove. The guide groove is located on the outside of the measuring light curtain. The rollers of the electric translation trolley are arranged to roll in the grooves on both sides of the guide groove, and the vehicle body is located in the vertical groove in the middle of the guide groove. The guide rod passes through the vehicle body. The image detection mechanism is connected to the vehicle body. The electric translation trolley is communicatively connected to the control unit.

6. The distance measuring device for long jump events according to claim 1, characterized in that: The swing motors rotate in opposite directions and work in a front-to-back manner.

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