Fencing exercise evaluation device

Abstract

The utility model relates to a fencing exercise evaluation device, which comprises a fencing lane and a fencing suit protective suit, and further comprises motion capture cameras and a surface electromyography, reflective marking points are covered on the fencing suit protective suit, and a plurality of motion capture cameras are symmetrically arranged on two sides of the fencing lane; the fencing kendo is formed by splicing a plurality of force measuring tables, force sensors and motion capture cameras on the force measuring tables are connected with the PC through the synchronous signal transceiver, and the surface electromyograph is communicated with the PC. A fencing way is composed of the assembled force measuring tables, meanwhile, the motion capture camera, the fencing suit protection suit covered with the reflective identification points and the surface electromyography instrument are matched, accurate collection and acquisition of kinematics data such as walking and moving are achieved, and a data analysis template and a parameter index system are provided for research based on fencing kinematics.

Description

Technical Field

[0001] The utility model relates to the technical field of fencing training equipment, in particular to a fencing motion evaluation device. Background Art

[0002] Fencing is a traditional sport with a long history. It combines elegant movements and flexible tactics, and is committed to cultivating athletes' concentration and coordination. It is very popular among sports enthusiasts and has been included in the official events of the Olympics and World Championships. Fencing competitions are held on a metal track that is 14 meters long, 1.5-2.5 meters wide, and 10-50 centimeters high. Fencing uniforms are white three-sword sets (top, pants, and protective vest) all made of bulletproof materials to ensure safety. In fencing training and competitions, athletes wear fencing uniforms and protective gear, and stab each other on the kendo track with a sword in one hand. The party that is hit first in the effective part of the body is the one hit. The competition events include foil, epee, and saber. In fencing events, there are many offensive and defensive techniques, among which the trail is particularly important.

[0003] In normal training, athletes rely entirely on memory to move their steps, which easily leads to deviations in movements and moving distances. There is no device to remind athletes, which reduces the effectiveness of training. At the same time, most of the training trails are fixed and inconvenient to carry. In recent years, people have focused not only on how to carry out sports protection and offensive and defensive tactics, but also on the accuracy and timeliness of scoring in fencing, and data analysis of high-dynamic sports activities to optimize training and competition analysis. Utility Model Content

[0004] The purpose of the utility model is to propose a fencing sports evaluation device to solve the problems in the above background technology that athletes completely rely on memory to move their steps, movements and moving distances are prone to deviations, there is no device to prompt athletes, resulting in reduced training effects, and most of the training trails are fixed and inconvenient to carry.

[0005] The utility model solves the technical problem with the following technical solutions:

[0006] A fencing sports evaluation device, comprising a fencing path and a fencing suit protection suit, characterized in that the device also comprises a motion capture camera, a surface electromyography instrument, reflective marking points are covered on the fencing suit protection suit, and a number of motion capture cameras are symmetrically arranged on both sides of the fencing path;

[0007] The fencing sword is composed of a number of force platforms.

[0008] The force sensor and motion capture camera on the force platform are connected to the PC through a synchronous signal transceiver, and the surface electromyograph communicates with the PC.

[0009] Furthermore, adjacent force measuring platforms of the fencing sword are fixed by hinges, and the fencing sword is foldable.

[0010] Furthermore, the force platform has a width and length of 1mx2m, and is aligned along the long side of the force platform and arranged side by side to form a fencing path, which is 14 meters long and 2 meters wide.

[0011] Furthermore, the fencing suit protection set includes a protective mask, a protective vest, a top, fencing gloves, pants and shoes. The top and pants constitute the fencing suit. A number of reflective marking points are covered on the fencing suit and fencing gloves. Reflective marking points with a diameter of 12 to 15 mm are set on the front chest, back, arms, shoulders, front and back of the calves of the fencing suit. Reflective marking points with a diameter of less than 8 mm are set near the joints of the palms and backs of the fencing gloves.

[0012] Furthermore, the number of reflective marking points arranged on the whole body of the fencing suit is greater than or equal to 50.

[0013] Furthermore, the number of reflective marking points arranged on the whole body of the fencing suit is 80-120.

[0014] Furthermore, the motion capture camera is an infrared high-precision camera; the acquisition frequency of the force sensor is 200-300 Hz.

[0015] Furthermore, the force platform includes a force platform cover plate, a force sensor, a support base, and an intermediate connecting piece, and the force platform cover plate, the force sensor, and the support base are connected together by the intermediate connecting piece to form the force platform.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The utility model of the fencing motion evaluation device is composed of an assembleable force measuring platform to form a fencing sword, and is equipped with a motion capture camera, a fencing suit protective suit covered with reflective marking points, and a surface electromyography instrument to achieve accurate collection and acquisition of kinematic data such as walking and moving.

[0018] 2. The utility model of the fencing motion evaluation device adopts multiple infrared high-precision cameras and force sensors of the force measuring platform to realize the collection of high-precision real-time three-dimensional motion data. The data is obtained through a PC to facilitate the later training guidance of athletes. The online display of data on the PC can prompt athletes in time, and the playback and review can also be carried out after the game. It supports real-time online or offline motion capture and analysis, provides the required accurate reference data for evaluation, optimizes training and conducts competition analysis, and provides data analysis templates and parameter indicator systems for research based on fencing motion mechanics.

[0019] 3. The fencing kendo in the utility model has a working state and a folding state. During competition and training, the mechanical platform is taken out and set to the working state mode. The signal lines and power lines of the force measuring platform, the motion capture camera and the surface electromyography are correctly connected, and the power is turned on and connected to the PC to work. The parameters such as synchronous output image are set through the computer. The operation is portable and more convenient to use. When it is not needed, the motion capture camera and the fencing suit covered with reflective marking points are put away, and the fencing kendo is changed to a folding state, which solves the problem that most of the trails used for training and competition are fixed and inconvenient to carry.

[0020] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of a fencing sports evaluation device of the utility model;

[0022] Figure 2 It is a structural schematic diagram of the force measuring platform in the utility model;

[0023] Figure 3 It is a side view structural schematic diagram of the force measuring platform in the utility model;

[0024] Figure 4 It is a structural schematic diagram of the hinge in the utility model;

[0025] Figure 5 It is a schematic diagram of the working state of fencing kendo in a fencing sports evaluation device of the utility model;

[0026] Figure 6 It is a schematic diagram of a folded state of a fencing sword in a fencing sports evaluation device of the utility model;

[0027] Figure 7 This is a schematic diagram of the positions of reflective marking points on a fencing glove in a fencing sports evaluation device of the utility model;

[0028] Figure 8 This is a schematic diagram of the positions of reflective marking points on a fencing suit in a fencing sports evaluation device of the utility model;

[0029] Fig. 9 This is a schematic diagram of the overall structure of a fencing protection suit in a fencing sports evaluation device of the utility model;

[0030] In the figure: 1. Fencing kendo, 2. Motion capture camera, 3. Force platform, 4. Force platform cover, 5. Force sensor, 6. Support base, 7. Middle connector, 8. Hinge, 9. Reflective marking point, 10. Fencing gloves, 11. Fencing suit, A. Working state mode, B. Folding state mode. DETAILED DESCRIPTION

[0031] The specific embodiments of the present invention are given below. The specific embodiments are only used to further illustrate the present invention in detail and do not limit the protection scope of the present invention.

[0032] See also Figure 1-9 The utility model provides a technical solution: a fencing sports evaluation device, including a fencing sword 1, a motion capture camera 2, a surface electromyography instrument, and a fencing suit protective suit covered with reflective marking points. A number of motion capture cameras 2 are symmetrically arranged on both sides of the fencing sword 1, and the motion capture cameras 2 are installed at a suitable height through a camera bracket;

[0033] The fencing suit protection suit complies with the "International Fencing Federation Competition Rules" and meets the high-level protection standard protection suit (900N) of the Chinese Fencing Association, and includes a protective mask, a protective vest, a top, fencing gloves 10, pants and shoes. The top and pants constitute a fencing suit 11. Fig. 9 shown.

[0034] A number of reflective marking points are covered on the fencing suit and fencing gloves. Reflective marking points (marker points) with a diameter of 12 to 15 mm are set on the front chest, back, arms, shoulders, front and back of the legs of the fencing suit. Small-sized reflective marking points (marker points) 9 with a diameter of less than 8 mm are set near the joints of the palm and back of the fencing gloves to improve the recognition accuracy and capture the fine movements of the fencing athletes' hands. Small-sized reflective marking points with a diameter of less than 8 mm can also be set on the foot surface of the shoes or the protective mask.

[0035] The number of reflective marking points arranged on the whole body of the fencing suit is greater than or equal to 50, preferably 80-120.

[0036] Figure 7 A small-sized reflective identification point with a diameter less than 8mm is set on the palm of the fencing gloves, and a small-sized reflective identification point with a diameter less than 8mm is set near the movable part of the finger joints on the back of the hand, with a total of 12 small-sized reflective identification points with a diameter less than 8mm.

[0037] The motion capture camera and the reflective marking points set on the fencing suit protection suit realize optical three-dimensional motion capture, and a number of electrode sheets of the surface electromyography are arranged on the athlete. The motion capture camera and the force sensor of the force measuring platform are connected to the PC through the synchronous signal transceiver. The surface electromyography communicates directly with the PC and transmits data and images to the PC. The PC is equipped with 3DMA (for three-dimensional display), Cortex (which can support the operation to complete the system space calibration and correction, real-time three-dimensional interface display, data acquisition and recording, etc.), Maya, Motion Builder and other software. The reflective marking points (marker points) are set on the outer surface of the fencing suit, and the motion capture camera emits infrared rays, which are captured after the reflective marking points are reflected, and the system space calibration and correction, real-time three-dimensional interface display, data acquisition and recording, etc. are completed. The motion data can be collected in real time. Through the multi-modal synchronous signal transceiver, the motion of different types of athletes during exercise can be measured. The muscle activity can be obtained through the surface electromyography to achieve accurate synchronization of kinematic data such as walking and jumping.

[0038] The motion capture camera is an infrared high-precision camera with a lens frame rate of 200-400fps, which refers to the number of frames the lens outputs per second. The acquisition frequency of the force sensor is 200Hz, which can achieve real-time display without delay.

[0039] The surface electromyography instrument includes a receiver and a number of electromyographic sensors. One electromyographic sensor is fixed on an electrode sheet. Each electromyographic sensor communicates wirelessly with the receiver. The electromyographic sensor can be fixed on the muscle only with the electrode sheet without additional fixation.

[0040] The surface electromyograph records the bioelectric signals of the adjacent neuromuscular system when the electrodes are placed on the surface of the skin. There is a correlation between the bioelectric signals and the activity and functional states of the muscles to a certain extent, and thus it can reflect the neuromuscular activity to a certain extent. The system can help diagnose a series of indicators such as the size of muscle work, endurance, contribution rate, etc., conduct research on ergonomic improvement and ergonomic analysis of muscle work in the field of ergonomics.

[0041] The fencing path 1 is composed of a number of force platforms. The fencing path 1 is 14 meters long and 1.5-2.5 meters wide. The length and width of the force platforms are 2mx1m. The force platforms are aligned along the long sides and arranged side by side to form the fencing path. Adjacent force platforms are fixed by hinges 8, and finally a 14mx2m fencing path is formed. The hinge fixing form makes the fencing path foldable, and the hinge fixing can facilitate the extension and connection between the force platforms. Each force platform has 5 fixed hinges, which are evenly distributed.

[0042] The hinge is fixed on the back of the force measuring platform and does not affect the overall flatness of the fencing path.

[0043] The force platform 3 includes a force platform cover plate 4, a force sensor 5, a support base 6, and an intermediate connector 7. The force platform cover plate 4, the force sensor 5, and the support base 6 are connected together by the intermediate connector 7 to form the force platform 3. A number of force platforms are connected by hinges 8 to form a fencing kendo 1. There are 14 force platforms in total, and the size of each force platform is 2mx1m.

[0044] The working principle of the fencing sports evaluation device of the utility model is as follows: before use, the fencing sword needs to be stretched from the folding state mode B to the working state mode A, and 2x4 motion capture cameras are placed around the fencing sword 1; when using, the athlete must place the electrode sheet of the surface electromyography on the relevant skin surface, wear the fencing suit with reflective marking points (Marker points), and then combine with the force measuring platform under the athlete's feet to obtain the motion posture data, assist in improving the accuracy and timeliness of the fencing sports discrimination score, collect various sports parameter information for analysis, obtain complete sports test and analysis, optimize training and competition analysis, and provide data analysis templates and parameter index systems for research based on fencing sports mechanics. It is portable and more convenient to use.

[0045] Furthermore, there are 8 motion capture cameras in total, with four cameras arranged on each side of the fencing path 1, which can capture the subtle movements of the fencing athletes in the entire mechanical platform space in all directions.

[0046] The above describes in detail the preferred specific embodiments of the utility model. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

[0047] Anything not described in the present invention is applicable to the prior art.

Claims

1. A fencing sports evaluation device, comprising a fencing sword and a fencing suit protection suit, characterized in that: The device also includes a motion capture camera, a surface electromyography instrument, and reflective marking points are covered on the fencing suit protection suit, and a number of motion capture cameras are symmetrically arranged on both sides of the fencing kendo field; The fencing path is composed of a number of force platforms. The force sensor and motion capture camera on the force platform are connected to the PC through a synchronous signal transceiver, and the surface electromyograph communicates with the PC.

2. The fencing motion evaluation device according to claim 1, characterized in that: Adjacent force measuring platforms of the fencing sword are fixed by hinges, and the fencing sword is foldable.

3. The fencing motion evaluation device according to claim 1, characterized in that: The width and length of the force platform are 1mx2m. They are aligned along the long side of the force platform and arranged side by side to form a fencing path. The fencing path is 14 meters long and 2 meters wide.

4. The fencing motion evaluation device according to claim 1, characterized in that: The fencing suit protection set includes a protective mask, a protective vest, a top, fencing gloves, pants and shoes. The top and pants constitute the fencing suit. A number of reflective marking points are covered on the fencing suit and fencing gloves. Reflective marking points with a diameter of 12 to 15 mm are set on the front chest, back, arms, shoulders, front and back of the calves of the fencing suit. Reflective marking points with a diameter of less than 8 mm are set near the joints of the palms and backs of the fencing gloves.

5. The fencing motion evaluation device according to claim 4, characterized in that: The number of reflective marking points arranged on the whole body of the fencing suit is greater than or equal to 50.

6. The fencing motion evaluation device according to claim 5, characterized in that: The number of reflective marking points arranged on the whole body of the fencing suit is 80-120.

7. The fencing motion evaluation device according to claim 4, characterized in that: The motion capture camera is an infrared high-precision camera; the acquisition frequency of the force sensor is 200-300 Hz.

8. The fencing motion evaluation device according to claim 1, characterized in that: The force platform comprises a force platform cover plate, a force sensor, a support base, and an intermediate connecting piece, and the force platform cover plate, the force sensor, and the support base are connected together by the intermediate connecting piece to form a force platform.

Images