WO2023178785A1 - 一种发球训练成绩自动判断及显示装置及其使用方法 - Google Patents

一种发球训练成绩自动判断及显示装置及其使用方法 Download PDF

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Publication number
WO2023178785A1
WO2023178785A1 PCT/CN2022/088046 CN2022088046W WO2023178785A1 WO 2023178785 A1 WO2023178785 A1 WO 2023178785A1 CN 2022088046 W CN2022088046 W CN 2022088046W WO 2023178785 A1 WO2023178785 A1 WO 2023178785A1
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Prior art keywords
optical signal
signal
unit
induction
signals
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PCT/CN2022/088046
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English (en)
French (fr)
Inventor
唐念
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湖州师范学院
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Publication of WO2023178785A1 publication Critical patent/WO2023178785A1/zh

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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B71/00—Games or sports accessories not covered in groups A63B1/00 - A63B69/00
    • A63B71/06—Indicating or scoring devices for games or players, or for other sports activities
    • A63B71/0619—Displays, user interfaces and indicating devices, specially adapted for sport equipment, e.g. display mounted on treadmills
    • A63B71/0622—Visual, audio or audio-visual systems for entertaining, instructing or motivating the user
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B69/00—Training appliances or apparatus for special sports
    • A63B69/0017—Training appliances or apparatus for special sports for badminton
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B71/00—Games or sports accessories not covered in groups A63B1/00 - A63B69/00
    • A63B71/06—Indicating or scoring devices for games or players, or for other sports activities
    • A63B71/0605—Decision makers and devices using detection means facilitating arbitration
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B71/00—Games or sports accessories not covered in groups A63B1/00 - A63B69/00
    • A63B71/06—Indicating or scoring devices for games or players, or for other sports activities
    • A63B71/0619—Displays, user interfaces and indicating devices, specially adapted for sport equipment, e.g. display mounted on treadmills
    • A63B71/0669—Score-keepers or score display devices
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2102/00—Application of clubs, bats, rackets or the like to the sporting activity ; particular sports involving the use of balls and clubs, bats, rackets, or the like
    • A63B2102/04—Badminton

Definitions

  • the invention belongs to the technical field of sports equipment, and specifically relates to an automatic judgment and display device for serving training results and a method of using the same.
  • badminton As a widely loved sport, badminton has attracted many people to participate and also spawned a large number of badminton players. Currently, badminton has appeared as an official event in major sports events. Unlike ordinary people who use badminton as entertainment, athletes need a lot of training to improve their ability to control the ball, such as serving, catching, spiking, and pushing. Among them, serving is particularly important and often plays a key role in scoring factors. Among the various ways of serving, sending high-quality small balls in front of the net is a skill that must be mastered, because it is difficult for the opponent to catch the small ball in front of the net. Counterattack, so your side will have more offensive scoring opportunities.
  • the patent document with application number CN201910159319.1 discloses a badminton pushing training monitoring and evaluation system, which includes a badminton training ground.
  • the net on the badminton training ground is equipped with a ball height measuring device.
  • One side of the net is for athletes.
  • the other side of the net is an equipment area for serving and detecting the position of the ball.
  • the equipment area includes a ball-falling sensor device located in the backcourt and a serving device located outside the backcourt.
  • the rear of the device is also equipped with a display for displaying the batting score, a central processor and a power supply unit; players start the system by pressing the system start button on the racket.
  • the above-mentioned badminton push training monitoring and evaluation system can automatically measure the position where the badminton falls, the height it flies in the air, and the speed of its flight, and scores the batting practice based on these three indicators.
  • the data measured by the system covers a wide range of It is not broad enough, such as the angle of the ball flying over the net, the horizontal position relative to the net, etc., and the data accuracy is insufficient.
  • the measured speed data represents the average speed of the badminton from the time the ball is struck to the ball landing, and The speed of the badminton will change significantly due to air resistance during flight. Therefore, it is difficult to know the flight speed of the badminton when passing the net, and it is difficult to conduct targeted training.
  • the present invention provides an automatic judgment and display device for serving training results.
  • the device can calculate multiple flight status data of the badminton when it passes the net, and provide scores based on the flight status data, thereby helping athletes to train.
  • An automatic judgment and display device for serving training results including two first signal rods and a second signal rod that cooperate with each other, and an electronic display screen that is communicatively connected to the signal rods; the first signal rod and the second signal rod
  • the signal rods can be installed on the upper ends of the uprights on both sides of the net respectively, and form a detection area between the first signal rod and the second signal rod;
  • the first optical sensor and the emission control module are provided in the first signal rod; the first optical sensor includes a plurality of optical signal emission units; the plurality of optical signal emission units are arranged on the first signal rod. Vertical arrangement in single or multiple columns;
  • the emission control module is used to control the plurality of optical signal emission units to sequentially emit optical signals, and to enable at most one of the plurality of optical signal emission units to emit an optical signal at any time;
  • the second signal rod is provided with a second optical sensor, a logic processing unit communicatively connected to the second optical sensor, a performance judgment unit for reading the processing results of the logic processing unit and generating performance data, and a user interface.
  • a score output unit for reading the score data and converting the serve score data into a digital signal;
  • the second optical sensor includes a plurality of optical signal receiving units and at least one induction signal generating unit; the plurality of optical signal receiving units are arranged longitudinally in a single column or in multiple columns on the second signal rod;
  • the first signal rod and the second signal rod can be respectively installed on the upper ends of the columns on both sides of the net, so that a detection area is formed between the first sensor and the second sensor;
  • the optical signal receiving unit receives the optical signal emitted from the optical signal transmitting unit; and each of the optical signal receiving units corresponds to at least one of the optical signal transmitting units;
  • the induction signal generating unit is used to detect the optical signal received by the optical signal receiving unit and generate a corresponding induction signal
  • All optical signal transmitting units send optical signals once for one scan cycle, and all induction signals generated within one scan cycle generate an induction signal set;
  • the logic processing unit is used to read the induction signal set, and calculate the flight status information of the badminton when it passes through the device based on changes in the number and type of induction signals in different induction signal sets;
  • the score judgment unit is used to receive the flight status information from the logic processing unit, and substitute the flight status information into the preset algorithm to calculate the serving score data;
  • the score output unit is used to receive the serving score data generated from the score judgment unit and convert the serving score data into a digital signal readable by the electronic display screen.
  • the present invention obtains more flight status information when a badminton passes through the net by arranging multiple optical signal transmitting units and optical signal receiving units.
  • the optical signal transmitting unit and the optical signal receiving unit are respectively installed in two columnar signal rods. Multiple optical signal transmitting units/optical signal receiving units are arranged equidistantly longitudinally.
  • the signal rods are provided with openings for signal transmission and reception. The lower ends of the signal rods can be placed on the uprights on both sides of the badminton net and fixed with the uprights. When the fixation is completed Finally, the openings of the two housing structures used for signal transmission and reception face each other, so that a scanning area generated by the first optical sensor and the second optical sensor is formed above the badminton net.
  • Each optical signal transmitting unit of the present invention forms a signal transmission with at most m optical signal receiving units, that is, a total of at most n*m induction signals are formed.
  • the optical signal transmitting unit corresponding to each of the above induction signals and the optical signal receiving unit are By connecting them, n*m signal paths will be formed.
  • These signal paths will form a detection network for calculating the flight status of the badminton. When the badminton flies through the net, some induction signals will disappear due to the blocking effect. According to the disappearance
  • the signal path corresponding to the induction signal can be calculated to obtain the area where the obstacle is located.
  • the power supply source of the signal rod can be an external power transmission line, a disposable power supply or a rechargeable mobile power supply, preferably a rechargeable mobile power supply to facilitate the disassembly, assembly and portability of the device.
  • the flight status information includes altitude position information, horizontal position information, flight speed information and flight angle information;
  • the logic processing unit includes: a position information processing unit, used to calculate the relative position of the badminton when it passes through the net.
  • the height position information and horizontal position information of the preset origin the speed information processing unit is used to calculate the flight speed information of the badminton when it passes through the net;
  • the angle information processing unit is used to calculate the flight angle information of the badminton when it passes through the net.
  • the second signal rod also includes a calibration module that is connected to the sensing signal generating unit.
  • the calibration module is used to read the sensing signal set generated in the sensing signal generating unit and determine the light intensity in the optical sensor. Whether the signal transmitting unit and the optical signal receiving unit completely correspond and send a calibration complete signal or a calibration incomplete signal in a visible manner.
  • the score output unit forms a communication connection with the logic processing unit, and the score output unit can receive the flight status information from the logic processing unit and convert the flight status information into a digital signal readable by the electronic display screen.
  • the bottom of the signal rod is provided with a positioning magnetic assembly.
  • the two signal rods have mating surfaces that can cooperate with each other, and a mating magnetic assembly is provided on the mating surfaces.
  • Another object of the present invention is to provide a method of using the above-mentioned automatic judgment and display device for serving training results, which includes the following steps:
  • Infrared scanning is performed between the n optical signal transmitting units of the first optical sensor and the m optical signal receiving units corresponding to the second optical sensor.
  • Each scanning cycle of the infrared scan includes the following processes in sequence: No. 1 optical signal transmitting unit Send signals to optical signal receiving units No. 1 ⁇ M respectively, and form induction signals M(1,1), M(1,2),..., M(1,m) through the induction signal generation unit respectively; No. 2
  • the optical signal transmitting unit sends signals to the optical signal receiving units No. 1 ⁇ m respectively, and forms at most induced signals M(2,1), M(2,2),..., M(2,m) through the induction signal generation unit. );...;
  • the optical signal transmitting unit No. n sends signals to the optical signal receiving units No.
  • the logical processing unit After the logical processing unit receives the missing set with the number of sensing signals (n*mk), it reads the optical signal transmitting unit and optical signal receiving unit numbers corresponding to the k sensing signals that the missing set lacks compared to the complete set.
  • Information that is, M(X 1 ,Y 1 ), M(X 2 ,Y 2 ),..., M(X k ,Y k ), X 1 ⁇ X k optical signal transmitting units and their corresponding Y 1 ⁇
  • the logic processing unit determines the two-dimensional space where the above-mentioned intersection points are located based on the spatial positions of the above-mentioned several intersection points. Calculate the position of the center point with the shortest sum of distances from the above-mentioned intersection points on the plane, that is, the height position information h and horizontal position information s of the badminton; where k is a positive integer not less than 4;
  • the logical processing unit calculates the time interval t 1 between the two scan cycles corresponding to the missing set that appears first and the complete set that appears first after the missing set. According to the length L of the badminton and the time interval t 1 Calculate the flight speed v of the badminton, which is the flight speed information of the badminton;
  • the logic processing unit calculates the height position information h 1 and horizontal position information s 1 of the badminton in the scanning period T 1 , the height position information h 2 and the horizontal position information s 1 of the badminton in the scanning period T 2
  • the horizontal position information s 2 and the time interval t 2 between the scanning period T 1 and the scanning period T 2 are used to obtain the position change ⁇ s and the vertical direction of the badminton in the horizontal direction between the scanning period T 1 and the scanning period T 2
  • the deflection angle ⁇ of the shuttlecock in the horizontal direction is calculated according to v, t 2 and ⁇ s
  • the deflection angle ⁇ of the shuttlecock in the vertical direction is calculated according to v, t 2 and ⁇ h, that is, the deflection angle ⁇ of the shuttlecock in the vertical direction is calculated according to v, t 2 and ⁇ h. flight angle information;
  • the logic processing unit sends flight status information including altitude position information h, horizontal position information s, flight speed information v, and flight angle information ⁇ and ⁇ to the performance judgment unit;
  • the score judgment unit substitutes the flight status information into the preset algorithm to obtain the serve score data, and transmits the serve score data to the score output unit;
  • the score output unit converts the serving score data into electrical signals and transmits them to the electronic display screen
  • the electronic display screen receives the electrical signal from the score output unit and displays the score value in a visible manner.
  • the present invention regards the motion state of the shuttlecock when it passes the net as a horizontal motion.
  • the shuttlecock passes the net, it is mostly parallel to the horizontal plane or the angle is not large. At this time, the shuttlecock is in the horizontal direction.
  • a detection network formed by n optical signal transmitting units and m optical signal receiving units is used.
  • the badminton flies over the net, its position can be roughly determined by using the response signal changes generated by the shielding detection network.
  • the specific algorithm is equivalent to obtaining another coordinate point closest to these k known points from k known points in a two-dimensional coordinate system.
  • the bottom optical signal receiving module or optical signal transmitting module is located. The position is set as the origin, and the position of the badminton can be expressed in the form of two-dimensional coordinates.
  • the flight speed of a badminton is usually tens of meters per second, so the total time it takes to pass through the scanning area is between 2 and 10 ms. In the short period of 2 to 10 ms, it can be considered that the angular direction of the badminton is basically unchanged.
  • the method of using the above-mentioned automatic judgment and display device for service training results also includes the following steps: S5.
  • the logic processing unit sends the flight status data to the performance output unit, and the performance output unit displays the service height, horizontal position, etc. through the electronic display screen. Flight speed and flight angle data.
  • the method of using the above-mentioned automatic judgment and display device for serving training results also includes: S0, setting the optical signal transmitting unit and the optical signal receiving unit, adjusting the relative positions of the optical signal transmitting unit and the optical signal receiving unit until it is connected with the optical sensor
  • the calibration module displays a calibration completion signal; the calibration module displays a calibration pass signal after receiving m*n induction signals, otherwise it displays a calibration incomplete signal.
  • the calibration module can be used to determine whether the optical sensor is set in place.
  • the optical signal transmitting unit and the optical signal receiving unit of the optical sensor are installed on both sides of the badminton net uprights through magnetic attraction or other detachable and adjustable installation methods. side, so a calibration module is needed to assist in the setup of the optical sensor.
  • step S2.3 in the sensing signal sets corresponding to the scanning period T 1 and the scanning period T 2 respectively, the number of sensing signals is less than or equal to (n*m-3).
  • the present invention is provided with multiple optical signal transmitting units and optical signal receiving units.
  • the monitoring network formed by the optical signal transmitting unit and the optical signal receiving unit can measure and calculate the flight parameters of the badminton when it passes the net, and bring the flight parameters into The final score value is obtained in the score algorithm, and finally the score data is displayed on the electronic display, so that training personnel can directly know the quality of their own serve and improve the effect of individual training.
  • the monitoring network formed by the optical signal transmitting unit and the optical signal receiving unit of the present invention can measure the position information, speed information, and angle information of the badminton when it passes the net.
  • the information covers a wider area and helps to calculate the quality of the serve more accurately. corresponding score.
  • the present invention can display the position information, speed information, and angle information of the badminton when it passes the net on the electronic display screen. Combining the serve quality score and the displayed position information, speed information, and angle information, targeted training of defects can be carried out. , improve training efficiency.
  • the signal rods of the present invention can be arranged on both sides of the badminton net uprights through magnetic attraction, and are installed auxiliary through the calibration module. The installation is easy, and the two signal rods can be matched to form an integrated structure, making it easy to carry to different places. .
  • Figure 1 is a schematic diagram of the installation method of the signal rod in Embodiment 1;
  • Figure 2 is a schematic structural diagram of the signal rod in Embodiment 1;
  • Figure 3 is a schematic structural diagram of the automatic judgment and display device for serving training results in Embodiment 1;
  • Figure 4 is a method of using the automatic judgment and display device for serving training results in Embodiment 1;
  • Figure 5 is a schematic structural diagram of the signal rod in Embodiment 3.
  • Figure 6 is a schematic structural diagram of the automatic judgment and display device for serving training results in Embodiment 3;
  • Figure 7 is a method of using the automatic judgment and display device for serving training results in Embodiment 3.
  • this embodiment provides an automatic judgment and display device for serving training results and a method of using the same.
  • the automatic judgment and display device for serving training results includes a first signal rod 1 and a second signal rod 2 that cooperate with each other and an electronic display screen connected to the second signal rod;
  • the first signal rod 1 is provided with a first optical sensor 11 including 6 optical signal transmitting units and a transmission control module.
  • the second signal rod is provided with a second optical sensor including 6 optical signal receiving units and an induction signal generating unit. , each of the optical signal transmitting units can transmit signals to the six optical signal receiving units. After receiving the optical signals, the optical signal receiving units generate corresponding induction signals through the induction signal generation unit; the emission control module is used to The six optical signal transmitting units are controlled to emit optical signals in sequence, and at most one optical signal transmitting unit of the plurality of optical signal transmitting units emits an optical signal at any time, and all six optical signal transmitting units transmit a signal once. That is one scanning cycle; the installation method of the optical sensor is shown in Figure 1.
  • the optical signal transmitting unit is arranged above one side of the ball net through the first signal rod, and the optical signal receiving unit is arranged on the other side of the ball net through the second signal rod.
  • the signal rod structure Above the column on one side; the signal rod structure is shown in Figure 2.
  • the first signal rod and the second signal rod are semi-cylindrical structures.
  • the two signal rods can be combined to form a complete cylindrical structure.
  • the lower ends of the two signal rods are equipped with positioning magnetic suction.
  • Component 12 by positioning the magnetic component, the signal rod can be magnetically fixed with the column and installed above the column.
  • the butt surface of the two signal rods is provided with a butt magnetic component 13.
  • the butt magnetic component can keep the two signal rods together after assembly.
  • the structure is stable and easy to carry.
  • the second signal rod also includes: a logic processing unit communicatively connected to the second optical sensor, a performance judgment unit for reading the processing results of the logic processing unit and generating performance data, and a performance judgment unit for reading the performance data. And a score output unit that converts serving score data into digital signals;
  • the optical signal receiving unit receives the optical signal emitted from the optical signal transmitting unit; and each of the optical signal receiving units corresponds to at least one of the optical signal transmitting units;
  • the logic processing unit is used to read the induction signal set, and calculate the flight status information of the badminton when it passes through the device based on changes in the number and type of induction signals in different induction signal sets;
  • the score judgment unit is used to receive the flight status information from the logic processing unit, and substitute the flight status information into the preset algorithm to calculate the serving score data;
  • the score output unit is used to receive the serving score data generated from the score judgment unit and convert the serving score data into a digital signal readable by the electronic display screen.
  • the method of using the above-mentioned automatic judgment and display device for serving training results includes the following steps:
  • each scanning cycle of the infrared scanning includes the following process: No. 1 optical signal transmitting unit sends signals to No. 1 to No. 6 optical signal receiving units respectively. signals, and form induction signals M(1,1), M(1,2),..., M(1,6) respectively; the optical signal transmitting unit No. 2 sends signals to the optical signal receiving units No. 1 ⁇ 6 respectively, And form induction signals M(2,1), M(2,2),..., M(2,6) respectively;...; No. 6 optical signal transmitting unit sends signals to No.
  • induction signals M(6,1), M(6,2),..., M(6,6) respectively all induction signals in each scan cycle form an induction signal set containing 36 induction signals. , recorded as a complete set; when there is a shuttlecock within the scanning range, due to the obstruction of the shuttlecock, the number of induction signals generated by the infrared scanning is reduced relative to the complete set, and the induction signal set is recorded as a missing set;
  • the logic processing module receives and reads the changes in the number and type of sensing signals in each sensing signal set, and calculates and obtains flight status information through the following method:
  • the speed information processing unit calculates the time interval t 1 (ms) between the two scanning periods corresponding to the missing set that appears first and the complete set that appears first after the missing set, and passes the preset badminton
  • a certain missing set received by the logical processing unit in the T 1 period has exactly four sensing signals M (X 1 , Y 1 ), M (X 2 , Y 2 ), M (X 3 , Y 3 ), M ( X 4 , Y 4 ) disappear, and the position information processing unit calculates the height position information and horizontal position information of the badminton according to the following method: optical signal transmitting unit The four signal paths formed on the two-dimensional plane by X 2 and the optical signal receiving unit Y 2 , the optical signal transmitting unit X 3 and the optical signal receiving unit Y 3 , the optical signal transmitting unit X 4 and the optical signal receiving unit Y 4 have several intersection points.
  • the position information processing unit calculates the center coordinate position (x 0 , y 0 ) that has the smallest sum of distances from all intersection points on the two-dimensional plane where the above-mentioned intersection points are located, where x 0 represents the horizontal position of the badminton at this time, y 0 Represents the height position of the badminton at this time;
  • the angle information processing unit calculates the flight angle information of the badminton according to the following method: Light signal emission Unit X 1 and optical signal receiving unit Y 1 , optical signal transmitting unit X 2 and optical signal receiving unit Y 2 , optical signal transmitting unit X 3 and optical signal receiving unit Y 3 , optical signal transmitting unit X 4 and optical signal receiving unit Y 4 , the optical signal transmitting unit X 5 and the optical signal receiving unit Y 5 , the optical signal transmitting unit X 6 and the optical signal receiving unit Y 6 respectively form six signal paths in space.
  • the logic processing unit sends flight status information including altitude position information h, horizontal position information s, flight speed information v, and flight angle information ⁇ and ⁇ to the performance judgment unit;
  • the score judgment unit substitutes the flight status information into the preset algorithm to obtain the serve score data, and transmits the serve score data to the score output unit;
  • the score output unit converts the serving score data into digital signals and transmits them to the electronic display screen
  • S105 The electronic display screen displays the corresponding score value after receiving the digital signal.
  • This embodiment provides another device for automatically judging and displaying service training results and a method of using the same.
  • the structure of the signal rod in this embodiment is basically the same as that in Embodiment 1.
  • the optical signal transmitting modules located on the first signal rod are arranged in two columns.
  • Both the first column and the second column contain 6 optical signal transmitting modules;
  • the optical signal receiving modules located on the second signal rod are arranged in two columns, and both the first column and the second column contain 6 optical signal receiving modules.
  • the automatic judgment and display device for serving training results in this embodiment is the same as that in Embodiment 1.
  • the only difference lies in the arrangement of the above-mentioned optical signal transmitting module and optical signal receiving module on the signal rod.
  • the method of using the automatic judgment and display device for serving training results in this embodiment is the same as that in Embodiment 1, but the specific operation method of the logic processing module in this embodiment is different from that in Embodiment 1.
  • the method of using the automatic judgment and display device for serving training results is as follows:
  • the 12 optical signal transmitting units located on the signal rod are arranged in two columns, of which the first column and the second column each contain 6 optical signal transmitting units; the 12 optical signal transmitting units located on the signal rod It is arranged in two columns corresponding to the optical signals, in which the first column and the second column both contain 6 optical signal receiving units; wherein each optical signal transmitting unit in the first column is consistent with all the optical signal transmitting units in the first column.
  • the optical signal receiving unit corresponds; each optical signal transmitting unit in the second column corresponds to all the optical signal receiving units in the second column; the first column and the second column of the optical sensor respectively perform periodic synchronized infrared scanning;
  • Each scanning cycle of the first column includes: the optical signal transmitting unit No. 1 of the first column sends signals to the optical signal receiving units No. 1 to No. 6 respectively, and forms at most induction signals M(1,1), M(1 ,2),...,M(1,6); the optical signal transmitting unit No. 2 sends signals to the optical signal receiving units No.
  • the No.6 optical signal transmitting unit sends signals to the No.1 ⁇ 6 optical signal receiving units respectively, and forms at most induction signals M(6,1),M( 6,2),...,M(6,6); all the induction signals in each scan cycle form an induction signal set containing up to 36 induction signals, and this induction signal set is called the first signal set; where induction The first signal set with a number of signals of 36 is recorded as the first signal complete set, and the first signal set with the number of induction signals less than 36 is recorded as the first signal missing set;
  • Each scanning cycle of the second column includes: the optical signal transmitting unit No. 1 of the second column sends signals to the optical signal receiving units No. 1 to No. 6 respectively, and forms at most induction signals N(1,1), N(1 ,2),...,N(1,6); the optical signal transmitting unit No. 2 sends signals to the optical signal receiving units No. 1 ⁇ 6 respectively, and forms at most induction signals N(2,1), N(2, 2),...,N(2,6);...; The optical signal transmitting unit No.
  • a sends signals to the optical signal receiving units No.1 ⁇ 6 respectively, and forms at most induction signals N(6,1), N( 6,2),...,N(6,6); all the induction signals in each scanning period form an induction signal set containing up to 36 induction signals, and this induction signal set is called the second signal set; where induction The second signal set with a signal number of 36 is recorded as the second signal complete set, and the second signal set with the sensing signal number less than 36 is recorded as the second signal missing set;
  • the logic processing module receives and reads the changes in the number and type of sensing signals in each sensing signal set, and calculates and obtains the flight status information through the following method:
  • the logic processing unit After the logic processing unit receives the first signal missing set with 32 sensing signals, it reads the optical signal transmitting unit and optical signal receiving unit numbers corresponding to the 4 sensing signals missing from the missing set compared to the first complete set.
  • Information namely M(X 1 ,Y 1 ), M(X 2 ,Y 2 ), M(X 3 ,Y 3 ), M(X 4 ,Y 4 ), X 1 ⁇ X 4 optical signal transmitting units and
  • the corresponding optical signal receiving units Y 1 ⁇ Y 4 form 4 interlaced straight lines, and the 4 straight lines form several intersection points with each other.
  • the logic processing unit performs the processing at the above several intersection points based on the spatial positions of the above-mentioned several intersection points. On the two-dimensional plane where the intersection point is located, the center point position with the shortest sum of distances from the above-mentioned intersection points is calculated, that is, the height position information h and horizontal position information s of the badminton;
  • the logic processing unit After the logic processing unit receives the first signal missing set with a number of 32 sensing signals, it reads the optical signal transmitting unit and optical signal receiving unit numbers corresponding to the 4 sensing signals missing from the missing set compared to the first complete set.
  • Information namely M(X 1 ,Y 1 ), M(X 2 ,Y 2 ), M(X 3 ,Y 3 ), M(X 4 ,Y 4 ), X 1 ⁇ X 4 optical signal transmitting units and
  • the corresponding optical signal receiving units Y 1 ⁇ Y 4 form 4 interlaced straight lines, and the 4 straight lines form several intersection points with each other.
  • the logic processing unit performs the processing at the above several intersection points based on the spatial positions of the above-mentioned several intersection points. Calculate the coordinate position (x 0 , y 0 ) of the center point with the shortest sum of distances from the above-mentioned intersection points on the two-dimensional plane where the intersection point is located;
  • the logic processing unit reads the optical signal transmitting unit and optical signal receiving unit number information corresponding to the i sensing signals missing from the missing set compared to the first complete set. , that is, N(X 1 ′,Y 1 ′), N(X 2 ′,Y 2 ′), N(X 3 ′,Y 3 ′), N(X 4 ′,Y 4 ′), X 1 ′ ⁇
  • the spatial position of the intersection points and calculate the center coordinate position (x 0 ′, y 0 ′) with the shortest sum of distances from the above-mentioned intersection points on the two-dimensional plane where the above-mentioned intersection points are located;
  • the logic processing unit sends flight status information including altitude position information h, horizontal position information s, flight speed information v, and flight angle information ⁇ and ⁇ to the performance judgment unit;
  • the score judgment unit substitutes the flight status information into the preset algorithm to obtain the serve score data, and transmits the serve score data to the score output unit;
  • the score output unit converts the serving score data into digital signals and transmits them to the electronic display screen
  • the electronic display screen receives the digital signal from the score output unit and displays the score value in a visible manner.

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Abstract

一种发球训练成绩自动判断及显示装置，包括两个相互配合的第一信号棒(1)和第二信号棒(2)，以及与信号棒通讯连接的电子显示屏；其中第一信号棒(1)中设有复数个可以根据一定周期发射光信号的光信号发射单元，第二信号棒(2)中设有复数个可接收光信号的光信号发射单元，第一信号棒(1)与第二信号棒(2)可分别固定在球网两侧立柱的上方，并在球网上方形成红外扫描区域，当羽毛球通过红外扫描区域时，本装置即可根据信号的变化来计算羽毛球的飞行速度、角度和过网时所处的位置，并根据上述数据来计算发球成绩，从而使运动员单人也能完成发球训练。进一步地还能通过羽毛球的各项数据进行针对性训练，提高训练效果。

Description

一种发球训练成绩自动判断及显示装置及其使用方法 技术领域
本发明属于体育器材技术领域，具体地涉及一种发球训练成绩自动判断及显示装置及其使用方法。
 背景技术
羽毛球作为一种广受喜爱的运动，在吸引了很多民众参与的同时也催生了大量的羽毛球运动员，目前羽毛球已经作为正式比赛项目在各大运动赛事中出现。与普通人将羽毛球作为娱乐的性质不同，运动员需要通过大量的训练来提高自身对球的掌控能力，例如发球、接球、扣球以及推球等。其中发球尤为重要，常常在得分要素中起到关键性作用，而发球的各种方式中，发出高质量的网前小球属于必须掌握的一项技能，因为网前小球对方接球后难以进行反击，因此己方会拥有更多的进攻得分机会。
 技术问题
现有的训练中往往是运动员个人进行网前小球发球训练，根据发出的羽毛球的飞行轨迹以及落地位置来判断发球质量，或者与其他技术人员进行一对一指导来分析发球质量，这种训练方式依赖于主观判断，当运动员进行独自训练时难以得知具体的发球质量以及发球存在的缺陷。
    申请号为CN201910159319.1的专利文件公开了一种羽毛球推球训练监控评估系统，包括羽毛球训练场，羽毛球训练场上的球网处设有球高测量装置，球网的一侧为用于运动员做推球练习的训练区域，球网的另一侧为用于发球和检测落球位置的设备区域，所述设备区域包括位于后场的落球感应装置和位于后场后方场外的发球装置，发球装置的后方还设有用于显示击球得分的显示器、中央处理器以及电源装置；运动员通过按动球拍上的系统启动按钮来启动该系统。上述羽毛球推球训练监控评估系统能够自动测量羽毛球落下的位置、在空中飞行的高度以及飞行的速度，并且根据这三项指标对该次击球练习进行评分，但该系统测得的数据涵盖面不够广，例如缺乏球飞行过网时的角度、相对球网的水平位置等，且数据精确度不足，例如其测量获得速度数据代表的是由击球到球落地过程中羽毛球的平均速度，而羽毛球在飞行过程中因为空气阻力速度会存在明显变化，因此难以得知过网时羽毛球的飞行速度，难以进行针对性的训练。
 技术解决方案
为了解决上述问题，本发明提供了一种发球训练成绩自动判断及显示装置，该装置能计算羽毛球过网时的多项飞行状态数据，并根据飞行状态数据进行评分，从而帮助运动员进行训练。
为了实现上述目的，本发明采用了以下技术方案：
一种发球训练成绩自动判断及显示装置，包括两个相互配合的第一信号棒和第二信号棒，以及与所述信号棒通讯连接的电子显示屏；所述的第一信号棒与第二信号棒可分别安装于球网两侧立柱上端，并在第一信号棒与第二信号棒之间形成检测区域；
所述的第一信号棒中设置有第一光学传感器和发射控制模块；所述的第一光学传感器包括复数个光信号发射单元；所述的复数个光信号发射单元在第一信号棒上呈单列或多列纵向排列；
所述的发射控制模块，用于控制所述的复数个光信号发射单元依次发射光信号，且使所述的复数个光信号发射单元在任意时刻至多只有一个光信号发射单元发射光信号；
所述的第二信号棒中设置有第二光学传感器、与所述第二光学传感器通讯连接的逻辑处理单元、用于读取所述逻辑处理单元处理结果并生成成绩数据的成绩判断单元和用于读取所述成绩数据并将发球成绩数据转化为数字信号的成绩输出单元；
所述的第二光学传感器包括复数个光信号接收单元和至少一个感应信号生成单元；所述的复数个光信号接收单元在第二信号棒上呈单列或多列纵向排列；
所述的第一信号棒与第二信号棒可分别安装于球网两侧立柱上端，并使第一传感器与第二传感器之间形成检测区域；
所述光信号接收单元接收来自光信号发射单元发射的光信号；并且，每个所述的光信号接收单元至少对应一个所述的光信号发射单元；
所述感应信号生成单元用于检测光信号接收单元接收光信号，并生成相应的感应信号；
所有光信号发射单元均发送一次光信号为一个扫描周期，一个扫描周期内产生的所有感应信号生成一个感应信号集合；
所述的逻辑处理单元用于读取所述的感应信号集合，并根据不同感应信号集合中感应信号的数量和类型的变化，计算出羽毛球通过所述装置时的飞行状态信息；
所述的成绩判断单元用于接收来自逻辑处理单元的飞行状态信息，将飞行状态信息代入至预设的算法中计算得到发球成绩数据；
所述的成绩输出单元用于接收来自成绩判断单元生成的发球成绩数据，并将发球成绩数据转化为电子显示屏可读取的数字信号。
本发明通过设置多个光信号发射单元与光信号接收单元来获取羽毛球过网时的更多飞行状态信息，光信号发射单元和光信号接收单元分别安装在两个柱状的信号棒中，在信号棒中多个光信号发射单元/光信号接收单元纵向等距排列，信号棒上开设有用于信号收发的开口，信号棒的下端可放置在羽毛球网两侧立柱上并与立柱相固定，当固定完成后，两壳体结构用于信号收发的开口相对，使羽毛球网上方形成由第一光学传感器和第二光学传感器生成的扫描区域。本发明的每个光信号发射单元均与最多m个光信号接收单元形成信号传递，即总共最多形成n*m个感应信号，将上述每个感应信号对应的光信号发射单元与光信号接收单元之间进行连线，则会形成n*m条信号路径，这些信号路径将会形成一个供计算羽毛球飞行状态的检测网络，当羽毛球飞行过网时，因为阻挡作用一些感应信号会消失，根据消失的感应信号所对应的信号路径可计算得到阻挡物所在区域。本发明中，信号棒的供电来源可以是外接输电线路，也可以是一次性电源或可充电的移动电源，优选地为可充电的移动电源，以方便装置拆装和携带。
进一步地，所述的飞行状态信息包括高度位置信息、水平位置信息、飞行速度信息和飞行角度信息；所述的逻辑处理单元包括：位置信息处理单元，用于计算羽毛球通过球网时的相对于预设原点的高度位置信息和水平位置信息；速度信息处理单元，用于计算羽毛器通过球网时的飞行速度信息；角度信息处理单元，用于计算羽毛球通过球网时的飞行角度信息。
进一步地，所述的第二信号棒中还包括与感应信号生成单元形成通讯连接的校准模块，所述的校准模块用于读取感应信号生成单元中生成的感应信号集合并判断光学传感器中光信号发射单元与光信号接收单元是否完整对应，并以可见的方式发送校准完成信号或校准未完成信号。
进一步地，所述的成绩输出单元与所述的逻辑处理单元形成通讯连接，成绩输出单元可接收来自逻辑处理单元的飞行状态信息并将飞行状态信息转化为电子显示屏可读取的数字信号。
进一步地，所述的信号棒底部设有定位磁吸组件。
进一步地，所述的两个信号棒具有能相互配合的对接面，对接面上设置有对接磁吸组件。
本发明的另一目的在于提供上述发球训练成绩自动判断及显示装置的使用方法，包括以下步骤：
S1、第一光学传感器的n个光信号发射单元与第二光学传感器对应的m个光信号接收单元之间进行红外扫描，红外扫描的每一扫描周期依次包括以下过程：1号光信号发射单元向1~m号光信号接收单元分别发送信号，并通过感应信号生成单元最多分别形成感应信号M(1,1)、M(1,2)、……、M(1,m)；2号光信号发射单元向1~m号光信号接收单元分别发送信号，并通过感应信号生成单元最多分别形成感应信号M(2,1)、M(2,2)、……、M(2,m)；……；n号光信号发射单元向1~m号光信号接收单元分别发送信号，并通过感应信号生成单元最多分别形成感应信号M(n,1)、M(n,2)、……、M(n,m)；每一扫描周期中的所有感应信号生成一个最多包含n*m个感应信号的感应信号集合；其中感应信号数量为n*m的感应信号集合记为完整集合，感应信号数量小于n*m的感应信号集合记为缺失集合；
S2.1、逻辑处理单元接收感应信号数量为（n*m-k）的缺失集合后，读取该缺失集合相较完整集合缺少的 k个感应信号所对应的光信号发射单元与光信号接收单元编号信息，即M(X 1,Y 1）、M(X 2,Y 2）、……、M(X k,Y k），X 1~X k号光信号发射单元和与其对应的Y 1~Y k号光信号接收单元之间成k条交错的直线，k条直线相互之间形成若干个交点，逻辑处理单元根据上述若干个交点的空间位置，并在上述若干个交点所处的二维平面上计算得到与上述若干个交点距离之和最短的中心点位置，即羽毛球的高度位置信息h和水平位置信息s；其中，k为不小于4的正整数；
S2.2、逻辑处理单元计算最先出现的缺失集合与在该缺失集合之后最先出现的完整集合所对应的两个扫描周期之间的时间间隔t 1，根据羽毛球的长度L与时间间隔t 1计算羽毛球的飞行速度v，即羽毛球的飞行速度信息；
S2.3、根据S2.1中所述的方法，逻辑处理单元计算扫描周期T 1中羽毛球的高度位置信息h 1和水平位置信息s 1、扫描周期T 2中羽毛球的高度位置信息h 2和水平位置信息s 2、描周期T 1与扫描周期T 2之间的时间间隔t 2，获取羽毛球在扫描周期T 1与扫描周期T 2之间的水平方向上的位置变化∆s和竖直方向上的位置变化∆h，根据v、t 2和∆s计算得到羽毛球在水平方向上的偏角α，根据v、t 2和∆h计算得到羽毛球在竖直方向上的偏角β，即羽毛球的飞行角度信息；
S2.4、逻辑处理单元将包含高度位置信息h、水平位置信息s、飞行速度信息v、飞行角度信息α和β在内的飞行状态信息发送至成绩判断单元；
S3、成绩判断单元将飞行状态信息代入至预设的算法中，得到发球成绩数据，并将发球成绩数据输送至成绩输出单元；
S4、成绩输出单元将发球成绩数据转化为电信号输送至电子显示屏；
S5、电子显示屏接收来自成绩输出单元的电信号后以可见的方式显示成绩数值。
本发明在进行羽毛球速度计算时将羽毛球过网时的运动状态视为水平运动，以一般羽毛球运动轨迹而言，在羽毛球过网时大多与水平面平行或夹角不大，此时羽毛球水平方向上的实际长度与其理论长度的差值较小，羽毛球的运动状态可视作平行，即此时的速度计算公式可认为是为v=L/t 1，其中L为羽毛球的理论长度。
在进行空间位置计算时，利用n个光信号发射单元和m个光信号接收单元形成的检测网络，当羽毛球飞越球网时，利用其遮蔽检测网络产生的响应信号变化即可大致判断其位置，具体算法相当于由二维坐标系中的k个已知点得到距离这k个已知点最近的另一坐标点，在计算时，通常将最下方的光信号接收模块或者光信号发射模块所在位置设为原点，羽毛球的位置可以用二维坐标的形式表示。
在进行角度计算时，截取某一时间点A羽毛球所在位置和间隔较短的时间点B羽毛球所在位置，测得将两位置的高度差和水平方向的位移大小，由于羽毛球的速度已经测得，因此可计算获得羽毛球的飞行角度。具体地，tanα=s 1/（v·t 2），tanβ=s 2/（v·t 2）。羽毛球的飞行速度通常为数十米每秒，因此其通过扫描区域的总耗时在2~10ms之间，在2~10ms的短暂时间内可以认为羽毛球的角度方向基本不变。
进一步地，上述发球训练成绩自动判断及显示装置的使用方法还包括以下步骤：S5、逻辑处理单元将飞行状态数据发送至成绩输出单元，成绩输出单元通过电子显示屏分别显示发球高度、水平位置、飞行速度和飞行角度数据。
进一步地，上述发球训练成绩自动判断及显示装置的使用方法还包括：S0、设置光信号发射单元与光信号接收单元，调整光信号发射单元与光信号接收单元的相对位置，直至与光学传感器连接的校准模块显示校准完成信号；所述的校准模块接收到m*n个感应信号后显示校准通过信号，否则显示校准未完成信号。通过校准模块可判断光学传感器是否设置到位，本发明在某种实施方式中光学传感器的光信号发射单元与光信号接收单元是通过磁吸或其他可拆卸及调节的安装方式设置在羽毛球网立柱两侧的，因此需要校准模块辅助光学传感器的设置。
进一步地，步骤S2.3中扫描周期T 1和扫描周期T 2分别对应的感应信号集合中，感应信号的数量均小于或等于（n*m-3）。
有益效果
综上所述，应用本发明方案可以取得以下有益效果：
1、本发明设置有多个光信号发射单元和光信号接收单元，通过光信号发射单元与光信号接收单元形成的监测网络可测量与计算羽毛球过网时的飞行参数，并将飞行参数带入至成绩算法中得到最终的成绩数值，最后将成绩数据显示在电子显示屏上，使训练人员能够直接得知自己的发球质量，提高单人训练效果。
2、本发明通过光信号发射单元与光信号接收单元形成的监测网络可测得羽毛球过网时的位置信息、速度信息、角度信息，信息涵盖面更广，有助于更加精确地计算发球质量对应的分数。
3、本发明可将羽毛球过网时的位置信息、速度信息、角度信息显示在电子显示屏上，结合发球质量分数以及显示的位置信息、速度信息、角度信息显可以对缺陷进行针对性的训练，提高训练效率。
4、本发明的信号棒可通过磁吸的方式设置在羽毛球网立柱两侧，并且通过校准模块来进行辅助安装，安装方便，且两信号棒之间可配合形成一体结构，便于携带至不同场所。
 附图说明
图1是实施例1中信号棒安装方式示意图；
图2是实施例1中信号棒的结构示意图；
图3是实施例1中发球训练成绩自动判断及显示装置的结构示意图；
图4是实施例1中发球训练成绩自动判断及显示装置的使用方法；
图5是实施例3中信号棒的结构示意图；
图6是实施例3中发球训练成绩自动判断及显示装置的结构示意图；
图7是实施例3中发球训练成绩自动判断及显示装置的使用方法
图中，1-第一信号棒，2-第二信号棒，11-第一光学传感器，12-定位磁吸组件，13-对接磁吸组件。
 本发明的实施方式
下面结合实施例与附图来对本发明进行详细阐述。
实施例1
如图1~图4所示，本实施例提供了一种发球训练成绩自动判断及显示装置及其使用方法。
发球训练成绩自动判断及显示装置包括相互配合的第一信号棒1和第二信号棒2以及与第二信号棒通讯连接的电子显示屏；
第一信号棒1内设置有包括6个光信号发射单元与发射控制模块的第一光学传感器11，第二信号棒中设置有包括6个光信号接收单元以及感应信号生成单元的第二光学传感器，每个所述的光信号发射单元均可向所述的6个光信号接收单元发射信号，光信号接收单元接收到光信号后通过感应信号生成单元生成相应的感应信号；发射控制模块用于控制所述的6个光信号发射单元依次发射光信号，且使所述的复数个光信号发射单元在任意时刻至多只有一个光信号发射单元发射光信号，6个光信号发射单元均发射一次信号即为一个扫描周期；光学传感器的安装方式如图1所示，光信号发射单元通过第一信号棒设置于球网其中一侧立柱上方，光信号接收单元通过第二信号棒设置于球网另一侧立柱上方；信号棒结构如图2所示，第一信号棒和第二信号棒为半圆筒结构，两信号棒可组合形成完整圆筒结构，两信号棒的下端均设有定位磁吸组件12，通过定位磁吸组件信号棒可与立柱形成磁吸固定并安装在立柱上方，两信号棒的对接面上设有对接磁吸组件13，对接磁吸组件可使两信号棒组装后保持结构稳定，便于携带。
第二信号棒中还包括：与所述第二光学传感器通讯连接的逻辑处理单元、用于读取所述逻辑处理单元处理结果并生成成绩数据的成绩判断单元和用于读取所述成绩数据并将发球成绩数据转化为数字信号的成绩输出单元；
所述光信号接收单元接收来自光信号发射单元发射的光信号；并且，每个所述的光信号接收单元至少对应一个所述的光信号发射单元；
所述的逻辑处理单元用于读取所述的感应信号集合，并根据不同感应信号集合中感应信号的数量和类型的变化，计算出羽毛球通过所述装置时的飞行状态信息；
所述的成绩判断单元用于接收来自逻辑处理单元的飞行状态信息，将飞行状态信息代入至预设的算法中计算得到发球成绩数据；
所述的成绩输出单元用于接收来自成绩判断单元生成的发球成绩数据，并将发球成绩数据转化为电子显示屏可读取的数字信号。
如图4所示，上述发球训练成绩自动判断及显示装置的使用方法包括以下步骤：
S101：光学传感器进行红外扫描，扫描频率为1kHz，当扫描范围内无羽毛球时，红外扫描的每一扫描周期依次包括以下过程：1号光信号发射单元向1~6号光信号接收单元分别发送信号，并分别形成感应信号M(1,1)、M(1,2)、……、M(1,6)；2号光信号发射单元向1~6号光信号接收单元分别发送信号，并分别形成感应信号M(2,1)、M(2,2)、……、M(2,6)；……；6号光信号发射单元向1~6号光信号接收单元分别发送信号，并分别形成感应信号M(6,1)、M(6,2)、……、M(6,6)；每一扫描周期中的所有感应信号形成一个包含36个感应信号的感应信号集合，记为完整集合；当扫描范围内存在羽毛球时，因为羽毛球阻拦，红外扫描生成的某感应信号集合相对于完整集合包含的感应信号数量减少，该感应信号集合记为缺失集合；
S102：逻辑处理模块接收并读取各感应信号集合中感应信号的数量和类型变化，通过以下方法计算获得飞行状态信息：
（1）速度信息处理单元计算最先出现的缺失集合与在该缺失集合之后最先出现的完整集合分别对应的两扫描周期之间的时间间隔t 1（ms），并通过预设的羽毛球的长度L（mm）与时间间隔t 1通过v=L/ t 1计算出羽毛球的飞行速度v（m/s）；
（2）逻辑处理单元在T 1周期收到的某一缺失合集相对于完整合集恰好有四个感应信号M（X 1，Y 1）、M（X 2，Y 2）、M（X 3，Y 3）、M（X 4，Y 4）消失，位置信息处理单元根据以下方法计算羽毛球的高度位置信息和水平位置信息：光信号发射单元X 1与光信号接收单元Y 1、光信号发射单元X 2与光信号接收单元Y 2、光信号发射单元X 3与光信号接收单元Y 3、光信号发射单元X 4与光信号接收单元Y 4在二维平面上形成的四条信号通路具有若干交点，位置信息处理单元计算在上述若干交点所处的二维平面上距离所有交点的距离之和最小的中心坐标位置（x 0，y 0），其中x 0代表此时羽毛球的水平位置，y 0代表此时羽毛球的高度位置；
（3）逻辑处理单元在T 2周期接收到的某一缺失集合，该相对于完整集合有六个感应信号M（X 1，Y 1）、M（X 2，Y 2）、M（X 3，Y 3）、M（X 4，Y 4）、M（X 5，Y 5）、M（X 6，Y 6）消失，角度信息处理单元根据以下方法计算羽毛球的飞行角度信息：光信号发射单元X 1与光信号接收单元Y 1、光信号发射单元X 2与光信号接收单元Y 2、光信号发射单元X 3与光信号接收单元Y 3、光信号发射单元X 4与光信号接收单元Y 4、光信号发射单元X 5与光信号接收单元Y 5、光信号发射单元X 6与光信号接收单元Y 6在空间上分别形成六条信号通路，六条信号通路之间形成若干交点，角度信息处理单元计算在上述若干交点所处的二维平面上距离所有交点的距离之和最小的中心坐标位置（x 0′，y 0′），其中x 0′代表此时羽毛球的水平位置，y 0′代表此时羽毛球的高度位置，随后角度信息处理单元读取步骤（2）中位置信息处理单元计算获得的坐标位置（x 0，y 0）并计算T 1周期与T 2周期之间的时间差t 2，通过tanα=s 1/（v·t 2）和tanβ=s 2/（v·t 2）计算得出羽毛球在水平方向的偏角α以及在竖直方向上的偏角β，上述公式中∆s= x 0-x 0′，∆h= y 0-y 0′，∆s和∆h取绝对值，单位为mm，t 2的单位为ms；
（4）逻辑处理单元将包含高度位置信息h、水平位置信息s、飞行速度信息v、飞行角度信息α和β在内的飞行状态信息发送至成绩判断单元；
S103：成绩判断单元将飞行状态信息代入至预设的算法中，得到发球成绩数据，并将发球成绩数据输送至成绩输出单元；
S104：成绩输出单元将发球成绩数据转化为数字信号输送至电子显示屏；
S105：电子显示屏接收到数字信号后显示其对应的成绩数值。
实施例2
本实施例提供了另一发球训练成绩自动判断及显示装置及其使用方法。
如图5所示，本实施例中的信号棒与实施例1中的结构基本相同，区别在于本实施例中位于第一信号棒上的光信号发射模块呈两纵列排列，第一纵列和第二纵列均包含6个光信号发射模块；位于第二信号棒上的光信号接收模块呈两纵列排列，第一纵列和第二纵列均包含6个光信号接收模块。
如图6所示，本实施例中发球训练成绩自动判断及显示装置与实施例1相同，区别仅在于上述的光信号发射模块与光信号接收模块在信号棒上的排布方式不同。
如图7所示，本实施例中发球训练成绩自动判断及显示装置的使用方法与实施例1相同，但本实施例中逻辑处理模块的具体运算方式与实施例1不同。
具体地，发球训练成绩自动判断及显示装置的使用方法如下：
S101、位于信号棒上的12个光信号发射单元呈两纵列排布，其中第一纵列和第二纵列均包含6个光信号发射单元；位于信号棒上的12个光信号发射单元呈与光信号对应的两纵列排布，其中第一纵列与第二纵列均包含6个光信号接收单元；其中第一纵列的每个光信号发射单元与第一纵列的所有光信号接收单元对应；第二纵列的每个光信号发射单元与第二纵列的所有光信号接收单元对应；光学传感器的第一纵列和第二纵列分别进行周期同步的红外扫描；
第一纵列每个扫描周期包括：第一纵列的1号光信号发射单元向1~6号光信号接收单元分别发送信号，并最多分别形成感应信号M(1,1)、M(1,2)、……、M(1,6)；2号光信号发射单元向1~6号光信号接收单元分别发送信号，并最多分别形成感应信号M(2,1)、M(2,2)、……、M(2,6)；……；6号光信号发射单元向1~6号光信号接收单元分别发送信号，并最多分别形成感应信号M(6,1)、M(6,2)、……、M(6,6)；每一扫描周期中的所有感应信号形成一个最多包含36个感应信号的感应信号集合，该感应信号集合称为第一信号集合；其中感应信号数量为36的第一信号集合记为第一信号完整集合，感应信号数量小于36的第一信号集合记为第一信号缺失集合；
第二纵列每个扫描周期包括：第二纵列的1号光信号发射单元向1~6号光信号接收单元分别发送信号，并最多分别形成感应信号N(1,1)、N(1,2)、……、N(1,6)；2号光信号发射单元向1~6号光信号接收单元分别发送信号，并最多分别形成感应信号N(2,1)、N(2,2)、……、N(2,6)；……；a号光信号发射单元向1~6号光信号接收单元分别发送信号，并最多分别形成感应信号N(6,1)、N(6,2)、……、N(6,6)；每一扫描周期中的所有感应信号形成一个最多包含36个感应信号的感应信号集合，该感应信号集合称为第二信号集合；其中感应信号数量为36的第二信号集合记为第二信号完整集合，感应信号数量小于36的第二信号集合记为第二信号缺失集合；
S102、逻辑处理模块接收并读取各感应信号集合中感应信号的数量和类型变化，通过以下方法计算获得飞行状态信息：
（1）逻辑处理单元接收感应信号数量为32的第一信号缺失集合后，读取该缺失集合相较第一完整集合缺少的 4个感应信号所对应的光信号发射单元与光信号接收单元编号信息，即M(X 1,Y 1）、M(X 2,Y 2）、M(X 3,Y 3）、M(X 4,Y 4），X 1~X 4号光信号发射单元和与其对应的Y 1~Y 4号光信号接收单元之间成4条交错的直线，4条直线相互之间形成若干个交点，逻辑处理单元根据上述若干个交点的空间位置，并在上述若干个交点所处的二维平面上计算得到与上述若干个交点距离之和最短的中心点位置，即羽毛球的高度位置信息h和水平位置信息s；
（2）当逻辑处理单元接收到的第一信号集合由第一完整信号集合转变为第一缺失信号集合时，记录该时间点A；当逻辑处理单元接收到的第二信号集合由第二完整信号集合转变为第二缺失信号集合时，记录该时间点B；计算出时间点A与时间点B之间的时间间隔t 1，随后根据第一纵列与第二纵列之间的间距d以及时间间隔t 1计算出羽毛球的飞行速度v，即羽毛球的飞行速度信息；
（3）逻辑处理单元接收感应信号数量为32的第一信号缺失集合后，读取该缺失集合相较第一完整集合缺少的 4个感应信号所对应的光信号发射单元与光信号接收单元编号信息，即M(X 1,Y 1）、M(X 2,Y 2）、M(X 3,Y 3）、M(X 4,Y 4），X 1~X 4号光信号发射单元和与其对应的Y 1~Y 4号光信号接收单元之间成4条交错的直线，4条直线相互之间形成若干个交点，逻辑处理单元根据上述若干个交点的空间位置，并在上述若干个交点所处的二维平面上计算得到与上述若干个交点距离之和最短的中心点坐标位置（x 0，y 0）；
同时，逻辑处理单元接收感应信号数量为32的第二信号缺失集合后，读取该缺失集合相较第一完整集合缺少的 i个感应信号所对应的光信号发射单元与光信号接收单元编号信息，即N(X 1′,Y 1′）、N(X 2′,Y 2′）、N(X 3′,Y 3′）、N(X 4′,Y 4′），X 1′~X 4′号光信号发射单元和与其对应的Y 1′~Y 4′号光信号接收单元之间成4条交错的直线，4条直线相互之间形成若干个交点，逻辑处理单元根据上述若干个交点的空间位置，并在上述若干个交点所处的二维平面上计算得到与上述若干个交点距离之和最短的中心坐标位置（x 0′，y 0′）；
获取羽毛球在水平方向上的位置变化∆s和竖直方向上的位置变化∆h，其中∆s= x 0- x 0′，∆h= y 0- y 0′；根据∆s和d可计算得到羽毛球在水平方向上的偏角α，根据∆h和d可计算得到羽毛球在竖直方向上的偏角β，即羽毛球的飞行角度信息，具体地，tanα=∆s/d，tanβ=∆h/d；其中d为第一纵列与第二纵列之间的间距，为已知常量；
（4）逻辑处理单元将包含高度位置信息h、水平位置信息s、飞行速度信息v、飞行角度信息α和β在内的飞行状态信息发送至成绩判断单元；
S103、成绩判断单元将飞行状态信息代入至预设的算法中，得到发球成绩数据，并将发球成绩数据输送至成绩输出单元；
S104、成绩输出单元将发球成绩数据转化为数字信号输送至电子显示屏；
S105、电子显示屏接收来自成绩输出单元的数字信号后以可见的方式显示成绩数值。
以上所述的本发明实施方式,并不构成对本发明保护范围的限定。任何在本发明的精神和原则之内所作的修改、等同替换和改进等,均应包含在本发明的权利要求保护范围之内。

Claims (9)

  1. 一种发球训练成绩自动判断及显示装置，其特征在于：包括两个相互配合的第一信号棒和第二信号棒，以及与所述信号棒通讯连接的电子显示屏；
    所述的第一信号棒中设置有第一光学传感器和发射控制模块；所述的第一光学传感器包括复数个光信号发射单元；所述的复数个光信号发射单元在第一信号棒上呈单列或多列纵向排列；
    所述的发射控制模块，用于控制所述的复数个光信号发射单元依次发射光信号，且使所述的复数个光信号发射单元在任意时刻至多只有一个光信号发射单元发射光信号；
    所述的第二信号棒中设置有第二光学传感器、与所述第二光学传感器通讯连接的逻辑处理单元、用于读取所述逻辑处理单元处理结果并生成成绩数据的成绩判断单元和用于读取所述成绩数据并将发球成绩数据转化为数字信号的成绩输出单元；
    所述的第二光学传感器包括复数个光信号接收单元和至少一个感应信号生成单元；所述的复数个光信号接收单元在第二信号棒上呈单列或多列纵向排列；
    所述的第一信号棒与第二信号棒可分别安装于球网两侧立柱上端，并使第一传感器与第二传感器之间形成检测区域；
    所述光信号接收单元接收来自光信号发射单元发射的光信号；并且，每个所述的光信号接收单元至少对应一个所述的光信号发射单元；
    所述感应信号生成单元用于检测光信号接收单元是否接收到光信号，当检测到光信号接收单元接收到光信号后感应信号生成单元生成相应的感应信号；
    所有光信号发射单元均发送一次光信号为一个扫描周期，一个扫描周期内产生的所有感应信号生成一个感应信号集合；
    所述的逻辑处理单元用于读取所述的感应信号集合，并根据不同感应信号集合中感应信号的数量和类型的变化，计算出羽毛球通过所述装置时的飞行状态信息；
    所述的成绩判断单元用于接收来自逻辑处理单元的飞行状态信息，将飞行状态信息代入至预设的算法中计算得到发球成绩数据；
    所述的成绩输出单元用于接收来自成绩判断单元生成的发球成绩数据，并将发球成绩数据转化为电子显示屏可读取的数字信号。
  2. 根据权利要求1所述的一种发球训练成绩自动判断及显示装置，其特征在于：
    所述的飞行状态信息包括高度位置信息、水平位置信息、飞行速度信息和飞行角度信息；
    所述的逻辑处理单元包括：
    位置信息处理单元，用于计算羽毛球通过球网时的相对于预设原点的高度位置信息和水平位置信息；
    速度信息处理单元，用于计算羽毛器通过球网时的飞行速度信息；
    角度信息处理单元，用于计算羽毛球通过球网时的飞行角度信息。
  3. 根据权利要求1所述的一种发球训练成绩自动判断及显示装置，其特征在于：所述的第二信号棒中还包括与感应信号生成单元形成通讯连接的校准模块，所述的校准模块用于读取感应信号生成单元中生成的感应信号集合并判断光学传感器中光信号发射单元与光信号接收单元是否完整对应，并以可见的方式发送校准完成信号或校准未完成信号。
  4. 根据权利要求1所述的一种发球训练成绩自动判断及显示装置，其特征在于：所述的成绩输出单元与所述的逻辑处理单元形成通讯连接，成绩输出单元可接收来自逻辑处理单元的飞行状态信息并将飞行状态信息转化为电子显示屏可读取的数字信号。
  5. 根据权利要求1所述的一种发球训练成绩自动判断及显示装置，其特征在于：所述的信号棒底部设有定位磁吸组件。
  6. 根据权利要求5所述的一种发球训练成绩自动判断及显示装置，其特征在于：所述的两个信号棒具有能相互配合的对接面，对接面上设置有对接磁吸组件。
  7. 权利要求1~6任一发球训练成绩自动判断及显示装置的使用方法，包括以下步骤：
    S1、第一光学传感器具有n个单纵列排布的光信号发射单元，第二光学传感器具有m个单纵列排布的光信号接收单元；第一光学传感器的n个光信号发射单元与第二光学传感器对应的m个光信号接收单元之间进行红外扫描，红外扫描的每一扫描周期依次包括以下过程：1号光信号发射单元向1~m号光信号接收单元分别发送信号，并通过感应信号生成单元最多分别形成感应信号M(1,1)、M(1,2)、……、M(1,m)；2号光信号发射单元向1~m号光信号接收单元分别发送信号，并通过感应信号生成单元最多分别形成感应信号M(2,1)、M(2,2)、……、M(2,m)；……；n号光信号发射单元向1~m号光信号接收单元分别发送信号，并通过感应信号生成单元最多分别形成感应信号M(n,1)、M(n,2)、……、M(n,m)；一个扫描周期中的所有感应信号生成一个最多包含n*m个感应信号的感应信号集合，其中n和m均为不小于2的正整数；其中感应信号数量为n*m的感应信号集合记为完整集合，感应信号数量小于n*m的感应信号集合记为缺失集合；
    S2.1、逻辑处理单元接收感应信号数量为（n*m-k）的缺失集合后，读取该缺失集合相较完整集合缺少的 k个感应信号所对应的光信号发射单元与光信号接收单元编号信息，即M(X1,Y1）、M(X2,Y2）、……、M(Xk,Yk），X1~Xk号光信号发射单元和与其对应的Y1~Yk号光信号接收单元之间可形成k条交错的直线，k条直线相互之间具有若干个交点，逻辑处理单元根据上述若干个交点的空间位置，并在上述若干个交点所处的二维平面上计算得到与上述若干个交点距离之和最短的中心点位置，即羽毛球的高度位置信息h和水平位置信息s；其中，k为不小于4的正整数；
    S2.2、逻辑处理单元计算最先出现的缺失集合与在该缺失集合之后最先出现的完整集合所对应的两个扫描周期之间的时间间隔t1，并根据羽毛球的长度L与时间间隔t1计算羽毛球的飞行速度v，即羽毛球的飞行速度信息；
    S2.3、根据S2.1中所述的方法，逻辑处理单元计算扫描周期T1中羽毛球的高度位置信息h1和水平位置信息s1、扫描周期T2中羽毛球的高度位置信息h2和水平位置信息s2、扫描周期T1与扫描周期T2之间的时间间隔t2，获取羽毛球在扫描周期T1与扫描周期T2之间的水平方向上的位置变化∆s和竖直方向上的位置变化∆h，根据v、t2和∆s计算得到羽毛球在水平方向上的偏角α，根据v、t2和∆h计算得到羽毛球在竖直方向上的偏角β，即羽毛球的飞行角度信息；
    S2.4、逻辑处理单元将包含高度位置信息h、水平位置信息s、飞行速度信息v、飞行角度信息α和β在内的飞行状态信息发送至成绩判断单元；
    S3、成绩判断单元将飞行状态信息代入至预设的算法中，得到发球成绩数据，并将发球成绩数据输送至成绩输出单元；
    S4、成绩输出单元将发球成绩数据转化为数字信号输送至电子显示屏；
    S5、电子显示屏接收来自成绩输出单元的数字信号后以可见的方式显示成绩数值。
  8. 根据权利要求6所述的发球训练成绩自动判断及显示装置的使用方法，其特征在于：还包括以下步骤：
    S6、逻辑处理单元将飞行状态信息发送至成绩输出单元，成绩输出单元将飞行状态信息转化为数值信息后发送至电子显示屏，电子显示屏以可见的方式显示发球高度、水平位置、飞行速度和飞行角度数值。
  9. 根据权利要求6所述的发球训练成绩自动判断及显示装置的使用方法，其特征在于：步骤S2.3中扫描周期T1和扫描周期T2分别对应的感应信号集合中，感应信号的数量均小于或等于（n*m-4）。
PCT/CN2022/088046 2022-03-23 2022-04-21 一种发球训练成绩自动判断及显示装置及其使用方法 WO2023178785A1 (zh)

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