WO2015109442A1 - 一种多节点运动测量与分析系统 - Google Patents

一种多节点运动测量与分析系统 Download PDF

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Publication number
WO2015109442A1
WO2015109442A1 PCT/CN2014/071006 CN2014071006W WO2015109442A1 WO 2015109442 A1 WO2015109442 A1 WO 2015109442A1 CN 2014071006 W CN2014071006 W CN 2014071006W WO 2015109442 A1 WO2015109442 A1 WO 2015109442A1
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WO
WIPO (PCT)
Prior art keywords
motion
motion measurement
module
measurement module
human body
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PCT/CN2014/071006
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English (en)
French (fr)
Inventor
刘昊扬
戴若犁
高斯彼得
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北京诺亦腾科技有限公司
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Application filed by 北京诺亦腾科技有限公司 filed Critical 北京诺亦腾科技有限公司
Priority to PCT/CN2014/071006 priority Critical patent/WO2015109442A1/zh
Publication of WO2015109442A1 publication Critical patent/WO2015109442A1/zh
Priority to US15/208,028 priority patent/US10249213B2/en

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Classifications

    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09BEDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B19/00Teaching not covered by other main groups of this subclass
    • G09B19/003Repetitive work cycles; Sequence of movements
    • G09B19/0038Sports
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B69/00Training appliances or apparatus for special sports
    • A63B69/36Training appliances or apparatus for special sports for golf
    • A63B69/3608Attachments on the body, e.g. for measuring, aligning, restraining
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B71/00Games or sports accessories not covered in groups A63B1/00 - A63B69/00
    • A63B71/06Indicating or scoring devices for games or players, or for other sports activities
    • A63B71/0619Displays, user interfaces and indicating devices, specially adapted for sport equipment, e.g. display mounted on treadmills
    • A63B71/0622Visual, audio or audio-visual systems for entertaining, instructing or motivating the user
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B71/00Games or sports accessories not covered in groups A63B1/00 - A63B69/00
    • A63B71/06Indicating or scoring devices for games or players, or for other sports activities
    • A63B71/0619Displays, user interfaces and indicating devices, specially adapted for sport equipment, e.g. display mounted on treadmills
    • A63B71/0622Visual, audio or audio-visual systems for entertaining, instructing or motivating the user
    • A63B2071/06363D visualisation
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2220/00Measuring of physical parameters relating to sporting activity
    • A63B2220/30Speed
    • A63B2220/34Angular speed
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2220/00Measuring of physical parameters relating to sporting activity
    • A63B2220/40Acceleration
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2220/00Measuring of physical parameters relating to sporting activity
    • A63B2220/80Special sensors, transducers or devices therefor
    • A63B2220/803Motion sensors
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2220/00Measuring of physical parameters relating to sporting activity
    • A63B2220/80Special sensors, transducers or devices therefor
    • A63B2220/83Special sensors, transducers or devices therefor characterised by the position of the sensor
    • A63B2220/833Sensors arranged on the exercise apparatus or sports implement
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2220/00Measuring of physical parameters relating to sporting activity
    • A63B2220/80Special sensors, transducers or devices therefor
    • A63B2220/83Special sensors, transducers or devices therefor characterised by the position of the sensor
    • A63B2220/836Sensors arranged on the body of the user

Definitions

  • Optical motion capture systems typically contain 4 to 32 cameras that are arranged around the object to be measured.
  • the range of motion of the object to be measured is in the overlapping area of the camera.
  • the key parts of the object to be tested are affixed with some characteristic reflective points or illuminating points as signs for visual recognition and processing.
  • the camera continuously captures the motion of the object to be measured and saves the image sequence for analysis and processing, calculates the spatial position of each marker point at a certain moment, and obtains its accurate motion trajectory.
  • the advantages of optical motion capture are that there are no restrictions on mechanical devices, wired cables, etc., allowing a wide range of motion of the object and a high sampling frequency to meet the needs of most sports measurements.
  • the rapid development of (MEMS) technology and the maturity of miniature inertial sensors have led to attempts to capture motion based on miniature inertial sensors in recent years.
  • the basic method is to connect an inertial measurement unit (IMU) to the object to be measured and move it along with the object to be tested.
  • the inertial measurement unit usually includes a micro accelerometer (measuring acceleration signal) and a micro gyroscope (measuring angular velocity signal). By integrating the secondary integration of the acceleration signal and the gyro signal, the position information and the orientation information of the object to be tested can be obtained.
  • the size and weight of the IMU can be made small, so that the motion of the object to be measured has little influence, and the requirements for the site are low, the allowable range of motion is large, and the cost of the system is relatively low.
  • MEMS inertial sensors have been applied to the capture and analysis of some sports, such as the capture and analysis of golf swings, due to their small size, light weight and low price.
  • the specific method is to install the sensor module on the hand-held exercise device through a certain fixture structure, and the sensor module follows the instrument and moves together during the movement. Capture the motion of the device and send it wirelessly to a certain terminal receiving device.
  • the single-node motion capture method is low in cost, but can only capture the motion of the exercise device and not provide the motion data of the human body.
  • U.S. Patent No. 7,689,378 discloses a highly miniaturized motion capture system comprising a MEMS sensor that can be embedded in a sports apparatus without affecting the motion characteristics of the exercise apparatus itself.
  • the motion capture module includes a three-axis accelerometer, a three-axis gyroscope and a three-axis magnetometer.
  • the three-dimensional accelerometer and the three-dimensional gyroscope can perform three-dimensional orientation and three-dimensional displacement of the module relative to the external fixed coordinate system.
  • Measurements, a three-dimensional magnetometer combined with a three-dimensional accelerometer can measure the absolute space of the module based on the local geomagnetic vector and the gravitational field.
  • the solution is implemented by integrating a single sensor module into a motion device (such as a golf club, etc.) to capture the motion path of the exercise device and wirelessly transmit it to the receiving device.
  • a motion device such as a golf club, etc.
  • the single-node motion capture method of the above technical solution adopts a mechanical integrated installation manner to semi-permanently mount the sensor module to the exercise device.
  • one sensor module must be integrated on each exercise device. , which leads to an increase in costs.
  • U.S. Patent No. 8,589,114 discloses a single-node motion capture and analysis system that adjustably mounts a sensor unit including a three-axis accelerometer and a three-dimensional gyroscope to the surface of the exercise device to capture the motion of the exercise device.
  • the processing of the motion data determines one or more motion feature values, wirelessly transmits the motion data and the feature values to the display unit, and displays the motion data and the motion feature values in a graphical form.
  • the solution uses an adjustable sensor mounting method that allows for flexible installation and transfer, making it easy to use.
  • this solution adopts a single-node motion capture method, which can only be installed on sports equipment to analyze the motion of sports equipment during exercise, and cannot provide motion information of the human body.
  • the present invention provides a multi-node motion measurement and analysis system to assist a user in establishing a correct motion mode, and can flexibly configure the position and number of motion measurement modules according to actual needs, so that the system can use fewer motion measurement modules. In the case of obtaining the required exercise information of the exercise equipment and the human body, reducing costs.
  • an embodiment of the present invention provides a multi-node motion measurement and analysis system, where the multi-node motion measurement and analysis system includes: at least one motion measurement module and a receiver unit;
  • the adjustment fixture is bound to the exercise device, or is bound to the human body, and the binding position on the human body is redistributed according to different measurement requirements;
  • the motion measurement module includes: a sensor module, configured to measure acceleration and angular velocity of the motion measurement module;
  • a first microprocessor module connected to the sensor module, configured to generate tilt information according to the acceleration and angular velocity information
  • the first RF module is coupled to the first microprocessor module for receiving the acceleration, angular velocity and tilt information and transmitting to the receiver unit.
  • the motion measurement module includes:
  • a sensor module configured to measure acceleration, angular velocity, and magnetic force information of the motion measurement module
  • a first microprocessor module coupled to the sensor module, configured to generate orientation information according to the acceleration, angular velocity, and magnetic force information
  • the first RF module is connected to the first microprocessor module for receiving the acceleration, angular velocity, magnetic force and orientation information and transmitting the information to the receiver unit.
  • the receiver unit receives information such as acceleration, angular velocity, and the like transmitted by the first RF module in each of the motion measurement modules, and generates motion trajectories of the human body or the exercise device according to the acceleration, angular velocity, and the like.
  • Motion information such as speed, angle, motion timing, etc.; and calibrating the motion measurement module when bound to different positions on the human body.
  • the number of the motion measurement modules is two or more, and one of the motion measurement modules is bound to the exercise device by an adjustable clamp or mechanical integration; the other motion measurement module is bound to the human body. Upper, and the binding positions on the human body are redistributed according to different measurement modes.
  • one of the motion measurement modules sends a time synchronization command to the additional motion measurement module.
  • the receiver unit transmits a time synchronization command to each motion measurement module.
  • the receiver unit determines the motion sequence of each part of the human body and the exercise device based on the data of each motion measurement module received in real time.
  • the movement sequence of each part of the human body and the exercise device includes the sequence of peaks of the acceleration of the various parts of the body and the exercise equipment on the time axis, the size of the time gap reaching the peak, the magnitude of the acceleration peak; the various parts of the body and the exercise equipment The speed of the peak on the time axis, the size of the peak time to reach the peak, the size of the speed peak; the angle of the body parts and the angle of the exercise equipment on the time axis peak, the size of the time gap to reach the peak , the size of the angle peak.
  • the receiver unit is further configured to display the motion track in the preset reference motion information in a 3D graphic, and display the motion track in the motion information in a 3D graphic.
  • a virtual laser is disposed on the exercise device for helping to visually display the motion trajectory of the exercise device.
  • the number of motion measurement modules bound to the human body is upgraded according to different measurement modes.
  • the sensor module includes:
  • a three-axis MEMS micro accelerometer for measuring an acceleration of the motion measurement module
  • a three-axis MEMS microgyroscope for measuring the angular velocity of the motion measurement module is provided.
  • the sensor module includes:
  • a three-axis MEMS micro accelerometer for measuring an acceleration of the motion measurement module
  • a three-axis MEMS microgyroscope for measuring an angular velocity of the motion measuring module
  • a three-axis MEMS magnetometer for measuring the magnetic force of the motion measurement module.
  • the first microprocessor module is specifically configured to: calculate, according to the gravity acceleration vector measured by the three-axis MEMS micro accelerometer and the magnetic force vector measured by the three-axis MEMS magnetometer a static three-dimensional attitude angle of the motion measurement module; generating a dynamic three-dimensional attitude angle of the motion measurement module according to the angular velocity measured by the three-axis MEMS microgyroscope; using the static three-dimensional attitude angle to the dynamic three-dimensional attitude The angle is corrected to obtain the orientation information of the motion measurement module.
  • the beneficial effects of the embodiments of the present invention are that, by the multi-node motion measurement and analysis system of the present invention, the motion information of the exercise device and the human body can be simultaneously measured, thereby obtaining the coordinated motion of the human body and the exercise device to assist the user to establish a correct motion mode. And the position and number of the motion measurement module can be flexibly configured according to actual needs, so that the system can obtain the required motion information of the exercise equipment and the human body with less motion measurement modules, and reduce the cost.
  • FIG. 1 is a schematic diagram of a specific example of a multi-node motion measurement and analysis system according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a specific example of a multi-node motion measurement and analysis system according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of a specific example of a multi-node motion measurement and analysis system according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of a specific example of a motion measurement module according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of a specific example of a multi-node motion measurement and analysis system according to an embodiment of the present invention
  • FIG. 7 is a schematic diagram of a specific example of a multi-node motion measurement and analysis system according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a specific example of a multi-node motion measurement and analysis system according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of a specific example of a multi-node motion measurement and analysis system according to an embodiment of the present invention.
  • FIG. 10 is a flow chart showing the use of a multi-node motion measurement and analysis system according to an embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of a specific example of a motion measurement module according to an embodiment of the present invention.
  • the technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. example. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
  • an embodiment of the present invention provides a multi-node motion measurement and analysis system, where the multi-node motion measurement and analysis system includes: at least one motion measurement module 101 and a receiver unit 103;
  • the measurement module 101 is bound to the exercise device 100 by an adjustable clamp, or is bound to the human body 200, and the binding position of the motion measurement module 101 on the human body 200 can be redistributed according to different measurement requirements.
  • the motion measuring module 101 mounted to the exercise apparatus 100 is mounted by adjusting the adjustable jig, and the adjustable jig can be fixed to various positions of the exercise machine.
  • the motion measurement module 101 can be separated from the adjustable clamp so that the motion measurement module 101 mounted on the exercise apparatus 100 can be conveniently mounted to various parts of the human body 200.
  • the motion measurement module 101 is coupled to the exercise apparatus 100 by an adjustable clamp.
  • the motion measurement module 101 is coupled to the human body 200.
  • the embodiment of the present invention can measure the motion information of the human body and the exercise equipment by using only one motion measurement module that can be arbitrarily mounted on the human body or the exercise equipment, and flexibly configure the position of the motion measurement module according to actual needs, thereby reducing the cost.
  • the number of motion measurement modules is 2, one of the motion measurement modules 101 is bound to the exercise device 100; the other motion measurement module 102 is bound to the human body 200, and the motion measurement module 102 is on the human body 200.
  • the binding position can be redistributed according to different measurement modes.
  • the number of motion measurement modules 102 bound to the human body 200 is upgraded according to different measurement modes. Therefore, more motion information of the body part can be obtained with less motion measurement module and lower cost.
  • the motion measurement module 102 is required to be a wireless motion measurement module, and each motion measurement module on the human body is respectively connected to the receiver unit 103 in a wireless manner.
  • multiple sensors bound to the human body are respectively wired and connected to the central control module bound to the human body, and the motion measurement information of each sensor is sent through the central control module, because the interface on the central control module is limited.
  • the number of sensors connected to the central control module is limited, and in the case of increased sensors, the receiver unit 103 does not have the function of processing the newly added sensor measured data.
  • the plurality of motion measurement modules 102 of the present application are respectively wirelessly connected (which can be connected through the RF RF module) to the receiver unit 103 without the limitation of the interface.
  • the receiver unit 103 of the present application can realize the transmission and processing of data of up to 20 motion measurement modules, and the software provides support for the upgrade function, so that the number of motion measurement modules in the system can be easily upgraded according to requirements.
  • the number of motion measurement modules is plural, one of the motion measurement modules 101 is bound to the exercise device 100; the other plurality of motion measurement modules 102 are bound to the human body 200, and are on the human body 200.
  • the binding position can be redistributed according to different measurement modes.
  • the motion measurement module 101 and the motion measurement module 102 form a multi-node motion measurement and system.
  • one of the modules is mounted on the exercise device, and the motion measurement module is bound by an adjustable clamp or mechanical integration. On the sports equipment.
  • the motion measurement module 101 and the motion measurement module 102 include: a sensor module 104, a first microprocessor module 105, and a first RF module 106.
  • the sensor module 104 is configured to measure acceleration, angular velocity, and magnetic force information of the motion measurement module;
  • the first microprocessor module 105 is coupled to the sensor module 104, and configured to generate orientation information according to the acceleration, angular velocity, and magnetic information;
  • the module 106 is coupled to the first microprocessor module for receiving acceleration, angular velocity, magnetic force and orientation information and transmitting to the receiver unit 102.
  • the motion measurement module 101 and the motion measurement module 102 may further include: a first battery 112 and a first power and voltage conversion module 113, and the first battery 112 passes the first power source.
  • the voltage conversion module 113 supplies power to the sensor module 104, the first microprocessor module and the first RF module; through the first power and voltage conversion module 113, the USB power source can be charged by the first battery 112.
  • the receiver unit 103 receives the acceleration, angular velocity, (or) magnetic force and orientation information sent by the first RF module 106 in each motion measurement module, and generates the human body and the motion according to the acceleration, angular velocity, or magnetic force and orientation information.
  • Motion information such as motion trajectory, line/angular velocity, angle, displacement, motion timing, etc.
  • the receiving processor unit 103 can be placed in proximity to the human body, or can be bound to the human body, and can also be integrated with a certain motion measuring module that binds the human body.
  • the sensor module 104 can only measure the acceleration and angular velocity information of the motion measurement module, and does not need to measure the magnetic information, the first microprocessor module. 105 may generate orientation information according to the acceleration and angular velocity information.
  • the receiver unit 102 generates acceleration, angular velocity and azimuth information transmitted by the first RF module 106 in the motion measurement module, and generates motion trajectories, line/angular speeds, angles, and displacements of the human body and the exercise device according to the acceleration, angular velocity, and orientation information.
  • Motion information such as motion timing.
  • the sensor module 104 includes a three-axis MEMS micro-accelerometer 201, a three-axis MEMS microgyroscope 202, and a three-axis MEMS magnetometer 203.
  • a three-axis MEMS micro-accelerometer 201 can measure the acceleration of the motion measurement module
  • a three-axis MEMS microgyrometer 202 can measure the angular velocity of the motion measurement module
  • a three-axis MEMS magnetometer 203 can measure the magnetic force of the motion measurement module.
  • the first microprocessor module 105 can calculate a static three-dimensional attitude angle of the motion measurement module according to the gravity vector measured by the three-axis MEMS micro-accelerometer 201 and the geomagnetic vector measured by the three-axis MEMS magnetometer 203; according to the three-axis MEMS microgyroscope 202
  • the measured angular velocity calculation generates a dynamic three-dimensional attitude angle of the motion measurement module; the dynamic three-dimensional attitude angle is corrected by using the static three-dimensional attitude angle of the motion measurement module, and the orientation information of the motion measurement module is obtained.
  • the movement sequence of each part of the human body and the exercise device includes the sequence of peaks of the acceleration of the various parts of the body and the exercise equipment on the time axis, the size of the time gap reaching the peak, the magnitude of the acceleration peak; the various parts of the body and the exercise equipment The speed of the peak on the time axis, the size of the peak time to reach the peak, the size of the speed peak; the angle of the body parts and the angle of the exercise equipment on the time axis peak, the size of the time gap to reach the peak , the size of the angle peak.
  • the sensor module 104 includes a three-axis MEMS micro accelerometer 201, and a three-axis MEMS.
  • Microgyroscope 202 The triaxial MEMS micro accelerometer 201 can measure the acceleration of the motion measurement module, and the triaxial MEMS microgyroscope 202 can measure the angular velocity of the motion measurement module.
  • the first microprocessor module 105 can calculate the static of the motion measurement module according to the gravity vector measured by the three-axis MEMS micro-accelerometer 201. Inclination; The dynamic three-dimensional attitude angle of the motion measurement module is generated based on the angular velocity measured by the three-axis MEMS microgyroscope 202.
  • the binding position of the motion measurement module on the human body is redistributed according to different measurement modes (different test requirements correspond to different measurement modes). For example, this measurement needs to measure the movement of the head. The next measurement may need to measure the movement of the shoulder. The next measurement may need to measure the movement of the leg.
  • the motion measurement module can be installed to the above different measurements according to the measurement requirements. Part. When the motion measurement modules are installed or replaced for the first time, the actual installation position of each motion measurement module needs to be specified on the human-machine interface of the receiver unit.
  • Receiver unit 103 can also calibrate the motion measurement module when it is bound to different locations on the body. As described above, when the respective motion measuring modules are installed or replaced at the first time, it is necessary to calibrate the motion measuring module or the newly added motion measuring module that is replaced with a different position of the human body by the receiver unit 103. After the position and quantity of the motion measurement module are specified on the human-computer interaction interface of the receiver unit 103, the receiver unit 103 gives a corresponding calibration process guidance according to the position and quantity of the motion measurement module installation, and the user completes the given calibration action according to the guidance. Eliminate module installation binding errors.
  • the principle of calibration is to place the motion measurement module mounting location in a known posture, and then determine the deviation of the mounting orientation of the motion measurement module based on the measured attitude of the motion measurement module and the known body part attitude.
  • the human calibration action is natural standing.
  • the standard calibration action of the person is the shoulder level, and the hands are horizontally stretched forward to hold a Pad posture.
  • a calibration action on a wrist module it may be that the hand is facing the front and the palm is facing down as a standard calibration action.
  • the receiver unit 103 can also calibrate the calculated motion information based on human biomechanical constraints and external constraints.
  • the receiver unit 103 can be a terminal device, or the receiver unit 103 includes a receiving processor and a terminal device, and the terminal device includes: a smartphone, a palmtop computer, a tablet computer, a television or a PC, and the like.
  • the receiver unit 103 is a terminal device, and the receiver unit 103 includes an embodiment of a receiving processor and a terminal device, which are separately described below.
  • Receiver unit 103 is a terminal device
  • the terminal device may receive, by using a Bluetooth or other wireless module, sensor information such as acceleration and angular velocity sent by the first RF module 106 in each motion measurement module, and generate information according to the received sensor information.
  • sensor information such as acceleration and angular velocity sent by the first RF module 106 in each motion measurement module
  • the motion information is compared, and the motion information of the current human body and the exercise equipment is compared with the preset reference motion information to generate a comparison result.
  • the terminal device includes a human-computer interaction module, and the terminal device sends the comparison result to the human-machine interaction module, and the human-machine interaction module performs an acousto-optic or vibration prompt according to the comparison result.
  • the human-machine interaction module may also be integrated with a motion measurement module.
  • the terminal device may further include: a display and a memory, wherein the display may be used to display motion information such as a motion track, a posture, a motion sequence of the human body and the exercise device, and a motion speed of the human body and the exercise device.
  • the memory can store the above motion information and standard reference motion trajectories or motion timings to provide real-time guidance and feedback on the motion of the human body based on standard reference motion trajectories or motion timing.
  • the multi-node motion measurement and analysis system of the embodiment of the present invention can implement time synchronization between each motion measurement module, and the time synchronization can be a point-to-point synchronization mode.
  • a motion measurement module (such as a motion module mounted on a motion device or a human body) sends a synchronization command to other motion measurement modules for time synchronization.
  • the terminal device can determine the motion timing of each part of the human body based on the data of each motion measurement module received in real time.
  • the synchronization may also be initiated by the terminal device, that is, the terminal device sends a synchronization command to all the motion measurement modules for synchronization.
  • the terminal device can determine the motion timing of each part of the human body based on the data of each motion measurement module received in real time.
  • the receiver unit 103 includes a receiving processor 600 and a terminal device 114.
  • the receiving processor 600 includes: a second RF module 107, a second microprocessor module 108, a third RF module 109, and a USB module 110.
  • the second RF module 107 is configured to receive the acceleration, angular velocity motion measurement module sensor information sent by the first RF module 106 of each motion measurement module, and send the sensor information to the second microprocessor module.
  • the second microprocessor module 108 is coupled to the second RF module 107 for generating motion information based on the sensor information and transmitting the motion information to the terminal device 1114 via the third RF module 109 or the USB module 110.
  • the second microprocessor module 108 can also compare the motion information of the current human body and the exercise device with the preset reference motion information to generate a comparison result.
  • the receiver unit 103 may further include: a human-machine interaction module 111, and the second microprocessor module 108 sends the comparison result to the human-machine interaction module 111, and the human-machine interaction module 111 performs an acousto-optic or vibration prompt according to the comparison result.
  • the human interaction module may also be integrated with a motion measurement module.
  • the receiver unit 103 may further include: a display 115 and a memory 116.
  • the display 115 (which may be a television) may be used to display motion information such as a motion track, a posture, a motion sequence of the human body and the exercise device, and a motion speed of the human body and the exercise machine.
  • the memory 116 can store the motion information described above and standard reference motion trajectories or motion timings to provide real-time guidance and feedback to the motion of the human body based on standard reference motion trajectories or motion timing.
  • the second microprocessor module 108 does not perform complex processing on the acceleration, angular velocity, magnetic force, and orientation information, and simply processes the acceleration, angular velocity, magnetic force, and orientation information, and then passes through the third RF module 109 or
  • the USB module 110 transmits to the terminal device 114 for processing by the terminal device 114.
  • the terminal device 114 generates motion information based on the sensor information, and compares the motion information with preset reference motion information to generate a comparison result.
  • the receiver unit 103 may further include a second power and voltage conversion module 117, the second RF module 107, the second microprocessor module 108, the third RF module 109, the human-machine interaction module 111, etc.
  • the two power and voltage conversion modules 117 are powered.
  • the multi-node motion measurement and analysis system of the embodiment of the present invention can also implement time synchronization between the various motion measurement modules, and the time synchronization can be a point-to-point synchronization mode.
  • a motion measurement module (such as a motion module mounted on a motion device or a human body) sends a synchronization command to other motion measurement modules for time synchronization.
  • the receiving processor 600 or the terminal device 114 can determine the motion timing of each part of the human body based on the data of each motion measurement module received in real time.
  • the synchronization may also be initiated by the receiving processor 600, i.e., the receiving processor 600 sends a synchronization command to all of the motion measurement modules for synchronization.
  • the receiving processor 600 or the terminal device 114 can determine the motion timing of each part of the human body based on the data of each motion measurement module received in real time.
  • the terminal device 114 may also initiate synchronization, that is, the terminal device 114 sends a synchronization command to the receiving processor 600, and the receiving processor 600 or the terminal device 114 resends the synchronization command to all the motion measurement modules, or The terminal device 114 directly sends a synchronization command to all of the motion measurement modules for synchronization.
  • the receiving processor 600 or the terminal device 114 can determine the motion timing of each part of the human body and the exercise device based on the data of each motion measurement module received in real time.
  • the motion information includes a three-dimensional posture, a motion trajectory, a motion velocity and a displacement of the human body and the exercise device at various moments, a deviation between the actual motion posture and the reference motion posture, and an actual motion trajectory and a reference motion trajectory. Deviation, coordinated motion sequence of the human body and exercise equipment, etc.
  • the motion sequence of each part of the human body and the exercise device includes the sequence of the acceleration of the various parts of the body and the motion device on the time axis.
  • Sequence the size of the time gap to reach the peak, the magnitude of the acceleration peak; the order of the peaks of the body parts and the speed of the exercise equipment on the time axis, the size of the time gap to reach the peak, the magnitude of the speed peak; The angle at which the angle of the motion device reaches the peak on the time axis, the size of the time gap to the peak, and the peak value of the angle.
  • the receiver unit 103 can also display the motion track in the preset reference motion information in a 3D graphic, and display the motion track in the motion information in a 3D graphic.
  • the target motion information (such as the motion track of the club or the human body, the motion sequence, etc.) is displayed on the display screen in a 3D graphic manner, and the user can slowly exercise to make his actual movement situation and
  • the target motion information on the screen is overlapped and matched, and the receiver unit 103 compares the measured swing motion data with the set swing motion data, and performs a voice or other manner of reminding the trainer according to the comparison result.
  • the user can gradually increase the speed of the motion, and finally the actual motion information can be well matched with the standard motion information at the normal motion speed, so that an accurate motion mode can be established. Achieve good training results.
  • the hand-held exercise machine may be a golf club, a tennis racket, a badminton racket, a baseball bat, a squash bat, a hockey stick, etc., and the present invention is described only with a golf club.
  • the user can browse the motion information just completed on the software interface of the receiver unit, such as the motion track of a certain part of the body, the motion track of the exercise device, the movement speed of the human body or the exercise device, At a certain point in time, the posture of the body and exercise equipment, the coordinated motion sequence of the human body and the exercise equipment, etc., can also be browsed and compared with historical exercise data.
  • auxiliary graphic displays such as virtual auxiliary devices (such as virtual laser, virtual plane, etc.) can be used, for example, a virtual laser is installed at one end of the exercise device.
  • the trajectory of the rod in the air and the trajectory of the ground projection are clearly and intuitively displayed during the swing, and the trajectory of the motion device in the air can be visually seen.
  • the laser is mounted in the normal direction of the golf club head or in the normal direction of the head plane, the torsion of the club during the swinging process can be visually observed.
  • Motion data can be stored locally or shared over the network.
  • the motion measurement module may be bound to the hand-held exercise device by a clamp, or may be bound to the hand-held exercise device by mechanical integration. After the fixture is installed and calibrated, the calibration process is no longer required for the motion measurement module to be mounted to the fixture.
  • the motion measurement module bound to the human body can be bound to the human body by means of a sensor suit, a strap or a combination of the two.
  • the entire motion process of the user's engaged motion can be divided into different motion stages by several key frames. For the golf swing motion, the key frames of the swing process include initial club alignment and swing arrival.
  • Key frames of the motion process can be determined using motion measurement modules based on acceleration and attitude.
  • Key frames during motion are determined in real time by a specific motion measurement module (such as a motion measurement module mounted on a hand-held exercise device) or multiple motion measurement modules.
  • the motion detection system is automatically determined according to the key frame detection system. Complete the measurement and recording of the entire movement process.
  • the key frame can be determined based on information such as acceleration and rest posture. For example, when judging the key frame of the initial club alignment, it is possible to determine whether the initial club alignment is based on the acceleration and the rest posture.
  • the multi-node motion measurement and analysis system can also set the reference target motion attitude/motion timing and the direction of the motion instrument trajectory.
  • the motion track of the saved coach or other person can be directly called by adjusting the motion track of the model of the software interface on the receiver unit.
  • the reference target motion pose/motion timing can be set manually or with actual captured self or other human motion pose/motion timing.
  • the target track direction of the exercise device can be: After placing the exercise instrument or motion measurement module horizontally on the ground in the direction of the target motion, press the corresponding button on the software interface of the receiver unit.
  • the receiver unit can also record the orientation of the current hand-held exercise device or motion measurement module and use this orientation as a reference for the direction of the trailing motion track.
  • FIG. 10 is a flow chart showing the use of a multi-node motion measurement and analysis system according to an embodiment of the present invention. As shown in FIG. 10, the process includes:
  • S1001 Mount each motion measurement module on the human body and exercise equipment.
  • the manner of attachment to the exercise apparatus is an adjustable, easy to remove fixture mounting method.
  • the clamps can be fastened to sports equipment of different diameters.
  • the motion measurement module can be easily mounted to the fixture or it can be easily removed and mounted to the fixture of another exercise machine.
  • the motion measurement module can be mounted to the human body in the form of a strap, or it can be mounted with a specific sensor suit, or a combination of the two.
  • each motion measurement module and the power of the receiver unit are turned on, the connection between the receiver unit and the motion measurement module is established, and the respective motion measurement modules are specified on the human-computer interaction interface of the receiver unit. Installation location.
  • S1003 Calibrate the mounting position of each motion measurement module.
  • the calibration of the motion measurement module mounted to the exercise instrument is achieved by the calibration of the fixture when the fixture is installed, and the motion measurement module is no longer required to be calibrated when it is mounted to the fixture.
  • the motion measurement module is installed in the human body, it is necessary to calibrate the installation position of the human body. Specifically, a series of calibration actions are performed according to the number of motion measurement modules and the installation position to complete the calibration of the installation position and orientation.
  • S1004 Select the operating mode of the motion measurement and analysis system.
  • S1005 The measurement mode is performed.
  • the motion measurement system captures the user's real motion for analysis and research
  • the other is the guidance mode, in which standard motion information, such as standard, needs to be set.
  • standard motion information such as standard
  • the motion sequence, motion trajectory, etc. of the human body and exercise equipment the user follows the standard motion information on the display to perform slow follow-up exercises, and then gradually increase the speed until the normal speed.
  • the motion measurement and analysis system also provides real-time feedback based on the deviation of the captured user's actual motion from the reference motion.
  • the target motion direction of the exercise device and the standard motion information of the human body and exercise equipment can be set.
  • the method of setting the moving direction of the target of the exercise device can be to set the motion device or the motion measuring module along the target moving direction, and then press the corresponding button on the software interface of the receiver unit to complete the setting.
  • the data is used as the target motion information.
  • each motion measurement module collects the motion data (including acceleration, angular velocity, magnetic signal, etc.) of the corresponding bound object and calculates the corresponding spatial pose, and then sends the collected data and the calculated result to the receiver unit.
  • the receiver unit calculates information such as the position, line/angular velocity, attitude angle, motion sequence, and motion trajectory of the body or exercise device based on the motion data of each of the motion measurement modules received wirelessly.
  • the target moving information will be displayed in the 3D graphics on the display of the receiver unit, and the user can move slowly in an effort to overlap his actual motion with the displayed standard motion information.
  • the receiver unit also gives a corresponding prompt based on the deviation of the user's actual motion from the standard reference motion.
  • auxiliary graphic displays such as virtual auxiliary devices (such as virtual laser, virtual plane, etc.) can be used, for example, a virtual laser is installed at one end of the exercise device.
  • Motion data can be stored locally or shared over the network.
  • the motion measurement and analysis system includes two motion measurement modules and a smart handheld device.
  • the motion measurement module is connected to the smart handheld device via Bluetooth.
  • One motion measurement module is mounted on the golf club by a clamp, and the other motion measurement module is attached to the wrist or other parts of the head, back, etc. by straps or sensor suits.
  • Smart handheld devices can be handheld devices with corresponding terminal software installed on smartphones, PDAs, tablets, and more. Smart handheld devices can be placed on a person (such as a pocket) or on one side of the floor or on a shelf.
  • the microprocessor module in the motion measurement module can calculate the absolute spatial orientation (relative to the geodetic coordinates) and relative spatial displacement of the motion measurement module based on information such as acceleration, magnetic force, and angular velocity measured by the sensor module.
  • the RF module in the motion measurement module wirelessly transmits the raw measurement data of the sensor and the calculated result data to the smart handheld device. Based on the received data, the smart handheld device can calculate some derived swing motion data, such as the speed of the shot, the angle, the movement timing of the hitting body and the club.
  • the fixture of the motion measurement module is first mounted on the golf club. If multiple clubs are required, the fixture can be mounted on each club. Align the mounting position of the fixture when installing the fixture. Then snap a motion measurement module onto the fixture of the club to be used. Then attach another motion measurement module to a part of the body, such as the wrist, by means of a strap or sensor suit. Then turn on the power of the two sensors, and the motion measurement module automatically enters the energy-saving standby mode after the power is turned on.
  • the motion measurement module After the connection is established, the motion measurement module enters the working mode.
  • the motion measurement module can use an indicator light to indicate different working states of the module. For example, in the standby mode, the indicator light flashes slowly; during the connection process, the indicator light flashes rapidly; after the connection is established, the motion measurement module enters the working mode, indicating The light is always on. After the smart handheld device is connected to the motion measurement module, it is necessary to perform a calibration operation of the installation position of the motion measurement module mounted on the body.
  • the terminal device when the module on the body is installed in the wrist position, the terminal device requires you to make an arm with the arm facing forward (the palm is facing down). After the calibration is completed according to the prompts on the smart handheld device, there is no need to perform a calibration process until the sensor installation position is changed.
  • the target direction of the shot you can set the target direction of the shot.
  • the direction of the motion measurement module on the club along the club is saved and used as the target shot direction.
  • the target shot direction is compared with the actual shot trajectory. It is also possible to set the target club angle for some key points in the swing process, such as the angle of the club when the upper stroke process reaches the highest point.
  • the above steps of setting the target of the hitting target and the attitude of the target club are optional steps, that is, the measurement of the swing motion can also be directly entered after the sensor installation and calibration are completed.
  • the motion measurement module will detect this motion. Once this motion is detected, the motion measurement module will be automatically in the alignment process.
  • the spatial orientation is calibrated.
  • the specific calibration method is that the module obtains the absolute spatial orientation of the motion measurement module based on the magnetometer and the measurement signal of the accelerometer, and uses this as the calculation space orientation of the motion measurement module.
  • the motion measurement module sends a control command to the smart handheld device, and the smart handheld device emits a prompt sound and sends a synchronization command to the two motion measurement modules, simultaneously starting the data recording. After the motion measurement module receives the synchronization command, it clears the number of the data sent by the module. When the smart handheld device receives the same number of motion measurement data, it indicates that the data is collected at the same time.
  • the motion measurement and analysis system of the present invention can detect a hitting event by detecting a hitting event if a sudden change in the acceleration of the set range is detected after the occurrence of the alignment event. After detecting the hitting event, the motion measurement module also generates control commands to the smart handheld device. The smart handheld device saves the data between two events (alignment and hitting) and calculates the flight of the ball based on the data. Derived data such as trajectory, flight distance, and swing power ratio, while ending the recording and saving of data. If the motion measurement module does not detect any events (alignment events and hitting events) within a certain period of time, the motion measurement module will automatically enter standby mode to save energy.
  • the smart handheld device will use the last alignment action before the shot as an alignment event.
  • the swing/shoot assist training device automatically performs automatic measurement control of the swing process without additional auxiliary devices and manipulation actions. If the target hitting direction setting is not made in the previous step, the smart handheld device will use the normal direction of the head plane as the target hitting direction when the alignment event occurs. If the target club posture during the swing is set in the previous step, the smart handheld device will give corresponding prompts during the swing process, for example, the club angle reaches the set maximum point angle during the upper stroke process. The smart handheld device will give a prompt sound for the down bar.
  • the golfer can view and analyze the just completed swing on the smart handheld device.
  • the smart handheld device graphically displays the trajectory of the club during the swing, the angle and speed of the shot, the reference flight path of the ball, and the coordinated motion sequence of the human body and the club.
  • a virtual laser is mounted on one end of the golf club of the graphical interface of the smart handheld device, and the projection of the laser on the ground can visually see the swinging trajectory of the club in the air.
  • a laser can also be installed in the normal direction of the golf club head plane to visually see the torsion of the club during the swinging process.
  • the body motion measurement module is installed on the wrist, you can see the movement track of the wrist and the change track of the angle of the hand grip; if installed on the head, you can see the trajectory of the head twist and pitch; Mounted on the torso, you can see the trajectory of the body twist and so on.
  • the motion timing diagram of the club and a certain part of the body can be obtained.
  • the golfer can judge whether the order of his body is correct. , so that it can be improved based on the analysis results.
  • the multi-node half body motion measurement and analysis system includes 12 motion measurement modules, a reception processor module and a terminal device.
  • the multi-node half-body motion measurement system In addition to attaching a motion measurement module to the golf club, the multi-node half-body motion measurement system also binds 11 motion measurements to the bust (upper hand, upper arm, lower arm, shoulder, head, back, buttocks, etc.). Module, therefore, the multi-node half-body motion measurement system measures both the club and the body movement.
  • the receiving processor module communicates with each of the motion measuring modules in a wireless manner.
  • the receiving processor module includes a wireless receiving antenna that allows the trainer to perform good wireless communication while being active within a certain range.
  • the receiving processor module wirelessly receives motion measurement data of each motion measurement module and transmits the motion measurement data to the terminal device.
  • the terminal device is a PC or a tablet.
  • the receiving processor module and the terminal device transmit data via USB and obtain power from the terminal device via USB.
  • the terminal device obtains the motion measurement data sent by the receiving processor module, processes and calculates the data, and obtains useful motion information of the human body and the exercise device, and the motion information includes the motion track, posture, speed, and motion timing of the person and the exercise device.
  • the terminal device also displays the motion data in graphical or digital form. Standard reference motion information is also stored on the terminal device to provide guidance for human motion.
  • 11 modules are bound to the corresponding parts of the body in the specified order. If they are not installed in the specified order, the actual installation mode needs to be set on the interface of the terminal device. Then turn on the power of each module and turn on the corresponding motion measurement terminal software on the terminal device. Enter the trainer's height, span, hip height and other data, and then establish a connection between the software and the motion measurement module.
  • the receiving processor module After the connection is completed, the receiving processor module performs a synchronization process of the motion measurement module.
  • the specific implementation manner is as follows: The receiving processor module sends a synchronous command to all the motion measuring modules, and each motion measuring module clears the number of the transmitted data at the same time after receiving the command.
  • the installation error of each motion module on the human body can be calibrated.
  • the trainer According to the instructions of the software, the trainer sequentially puts out the specified calibration action or posture such as the T posture, the natural standing posture, and the cloud hand movement.
  • the terminal device corrects the module according to the posture and the movement of the human body according to the error and the dimensional deviation of each part of the body, so that the human body motion data can be accurately measured.
  • the last motion measurement module is mounted to the designated position of the club by means of a clamp and the corresponding club is selected on the terminal device.
  • the standard motion information of the person and the target trajectory of the hitting ball can be set, and the setting method can be the standard swing motion data downloaded through the network. It can also capture the actual motion data of your own. Finally, normal swing training can be performed. During the swing, the motion measurement module also reconfirms the alignment event and the impact event, which automatically completes the data capture and recording of the swing process.
  • the terminal device In the training, if the working mode selects the guiding mode, the terminal device will display the target motion information (such as the motion track of the club or the human body, the motion sequence, etc.) on the display screen in a 3D graphic manner, and the user can work slowly. By overlapping and matching the actual motion situation with the target motion information on the screen, the terminal device compares the measured swing motion data with the set swing motion data, and performs voice or other manner on the trainer according to the comparison result. Reminder. On the basis of ensuring that the real motion information can be consistent with the target motion information, the user can gradually increase the speed of the motion, and finally the actual motion information can be well matched with the standard motion information at the normal motion speed, so that an accurate motion mode can be established. Achieve good training results.
  • the target motion information such as the motion track of the club or the human body, the motion sequence, etc.
  • the various motion measurement modules bound to the body can be removed and reinstalled into a new position.
  • the handle, the upper arm, and the lower arm module are removed and mounted on the foot, the lower leg, and the thigh, and the lower body can be And the movement of the torso for measurement and exercise guidance.
  • the whole body's motion measurement and guidance is completed with a small number of motion modules and low cost.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the present invention may employ one or more of the computer usable program code embodied therein.
  • the computer is in the form of a computer program product embodied on a storage medium, including but not limited to disk storage, CD-ROM, optical storage, and the like.
  • the computer program instructions can also be stored in a computer readable memory operable in a particular manner by a computer or other programmable data processing device, such that instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the instruction means implements the functions specified in one or more blocks of the flow or in a flow or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

Abstract

一种多节点运动测量与分析系统,包括:至少一个运动测量模块(101,102)及一接收器单元(103);所述运动测量模块(101,102)通过可调节夹具绑定在手持式运动器械(100)上,或者绑定在人体(200)上,并且在人体上的绑定位置根据不同的测量需求重新分布;该运动测量模块(101,102)包括:传感器模块(104),用于测量运动加速度、角速度及磁力信息;第一微处理器模块(105),连接传感器模块(104),用于生成方位信息;第一RF模块(106),用于接收加速度、角速度、磁力及方位信息,并发送给接收器单元(103);接收器单元(103)根据加速度、角速度、磁力及方位信息生成运动信息;并且对运动测量模块(101,102)在绑定到人体(200)上不同位置时进行校准。可以根据实际需要灵活配置运动测量模块(101,102)的位置和数量,在实现多种测量需求的同时降低了成本。

Description

一种多节点运动测量与分析系统
技术领域 本发明是关于运动测量技术, 特别是关于一种多节点运动测量与分析系统。 背景技术 近年来, 运动捕捉技术开始广泛应用于体育运动的动作捕捉与分析。 运动捕捉技术 可以以数字的方式记录对象的动作, 当前常用的运动捕捉技术主要包括光学式运动捕捉 和基于惯性传感器的运动捕捉:
光学式运动捕捉系统中通常包含 4~32个相机, 这些相机环绕待测物体排列, 待测物 体的运动范围处于相机的重叠区域。 待测物体的关键部位贴上一些特质的反光点或者发 光点作为视觉识别和处理的标志。 系统标定后, 相机连续拍摄待测物体的运动并把图像 序列保存下来进行分析和处理, 计算每一个标志点在某一瞬间的空间位置, 并从而得到 其准确的运动轨迹。 光学式运动捕捉的优点是没有机械装置、 有线电缆等的限制, 允许 物体的运动范围较大, 并且采样频率较高, 能够满足多数体育运动测量的需要。 但是这 种系统价格昂贵, 系统的标定比较繁琐, 只能捕捉相机重叠区域的物体运动, 而且当运 动比较复杂时, 标志容易混淆和遮挡, 从而产生错误的结果。
传统的机械式惯性传感器长期应用于飞机、 船舶的导航, 随着微机电系统
(MEMS) 技术的高速发展, 微型惯性传感器的技术成熟, 近年来, 人们开始尝试基于 微型惯性传感器的运动捕捉。 基本方法是把惯性测量单元 (IMU) 连接到待测物体上并 跟随待测物体一起运动。 惯性测量单元通常包括微加速度计 (测量加速度信号) 以及微 陀螺仪 (测量角速度信号) , 通过对加速度信号的二次积分以及陀螺仪信号的积分, 可 以得到待测物体的位置信息以及方位信息。 由于 MEMS技术的应用, IMU的尺寸和重 量可以做的很小, 从而对待测物体的运动影响很小, 并且对于场地的要求低, 允许的运 动范围大, 同时系统的成本比较低。
MEMS惯性传感器以其体积小、 重量轻、 价格低等特点, 目前已应用到一些体育运 动的捕捉和分析中, 如高尔夫球挥杆运动的捕捉和分析。 具体做法是通过一定的夹具结 构, 把传感器模块安装到手持式运动器械上, 在运动中传感器模块跟随器械一起运动并 把器械的运动捕捉下来以无线的方式发送给一定的终端接收设备。 该单节点的运动捕捉 方式成本低, 但是只能捕捉运动器械的运动而不能提供人体的运动数据。
美国专利 US7689378揭示了一种高度小型化的包含 MEMS传感器的运动捕捉系 统, 它可以嵌入到运动器械上而不影响运动器械本身的运动特征。 其运动捕捉模块包括 1个三轴加速度计、 1个三轴陀螺仪和 1个三轴磁力计, 其中三维加速度计和三维陀螺仪 可以对模块相对外界固定坐标系统的 3维方位以及三维位移进行测量, 三维磁力计结合 三维加速度计根据本地地磁向量和重力场可以对模块的绝对空间进行测量。 该方案的实 现方式是把单个的传感器模块集成到运动器械 (如高尔夫球杆等) 上, 从而把运动器械 的运动轨迹捕捉下来并无线发送给接收装置。 上述技术方案的单节点运动捕捉方式采用 机械集成的安装方式, 把传感器模块半永久安装固定到运动器械上, 对于需要使用多个 运动器械的运动来讲, 每个运动器械上都要集成一个传感器模块, 从而带来成本的提 升。
美国专利 US8589114揭示了一种单节点的运动捕捉与分析系统, 把一个包含三轴加 速度计和三维陀螺仪的传感器单元可调节地安装到运动器械的表面, 把运动器械的运动 捕捉下来, 通过对运动数据的处理确定一个或者多个运动特征数值, 把运动数据和特征 数值无线发送到显示单元, 以图形的形式把运动数据和运动特征数值显示出来。 该方案 采用可调节的传感器安装方式, 可以灵活的进行安装和转移, 给实际使用带来了便利。 但是该方案采用单节点的运动捕捉方式, 只能安装到运动器械上对运动中运动器械的运 动进行分析, 无法提供人体的运动信息。 发明内容 本发明提供一种多节点运动测量与分析系统, 以协助用户建立正确的运动方式, 并 且可以根据实际需要灵活配置运动测量模块的位置和数量, 使得系统能够在使用较少的 运动测量模块的情况下获得所需的运动器械和人体的有用的运动信息, 降低成本。
为了实现上述目的, 本发明实施例提供一种多节点运动测量与分析系统, 所述的多 节点运动测量与分析系统包括: 至少一个运动测量模块及一接收器单元; 所述运动测量 模块通过可调节夹具绑定在运动器械上, 或者绑定在人体上, 并且在所述人体上的绑定 位置根据不同的测量需求重新分布;
在一实施例中, 所述的运动测量模块包括: 传感器模块, 用于测量所述运动测量模块的加速度和角速度;
第一微处理器模块, 连接所述的传感器模块, 用于根据所述的加速度及角速度信息 生成倾角信息;
第一 RF模块, 连接所述的第一微处理器模块, 用于接收所述的加速度、 角速度及 倾角信息, 并发送给所述的接收器单元。
在一实施例中, 所述的运动测量模块包括:
传感器模块, 用于测量所述运动测量模块的加速度、 角速度及磁力信息; 第一微处理器模块, 连接所述的传感器模块, 用于根据所述的加速度、 角速度及磁 力信息生成方位信息;
第一 RF模块, 连接所述的第一微处理器模块, 用于接收所述的加速度、 角速度、 磁力及方位信息, 并发送给所述的接收器单元。
所述的接收器单元接收各个所述的运动测量模块中的所述的第一 RF模块发送来的 加速度、 角速度等信息, 根据所述的加速度、 角速度等信息生成人体或者运动器械的运 动轨迹、 速度、 角度、 运动时序等运动信息; 并且对运动测量模块在绑定到人体上不同 位置时进行校准。
在一实施例中, 所述运动测量模块的数量为 2个或多个, 其中一个运动测量模块通 过可调节夹具或者机械集成的方式绑定在运动器械上; 另外的运动测量模块绑定在人体 上, 并且在所述人体上的绑定位置根据不同的测量模式重新分布。
在一实施例中, 其中一个运动测量模块向另外的运动测量模块发送时间同步指令。 在一实施例中, 所述的接收器单元向每个运动测量模块发送时间同步指令。
在一实施例中, 所述的接收器单元根据实时收到的各个运动测量模块的数据确定人 体各个部位与运动器械的运动时序。 所述的人体各个部位与运动器械的运动时序包括身 体各个部位与运动器械的加速度在时间轴上达到峰值的先后顺序, 达到峰值的时间间隙 的大小, 加速度峰值的大小; 身体各部位与运动器械的速度在时间轴上达到峰值的先后 顺序, 达到峰值的时间间隙的大小, 速度峰值的大小; 身体各部位与运动器械的角度在 时间轴上达到峰值的先后顺序, 达到峰值的时间间隙的大小, 角度峰值的大小。
在一实施例中, 所述的接收器单元还用于将预先设定的参考运动信息中的运动轨迹 以 3D图形显示, 并把运动信息中的运动轨迹以 3D图形显示。
在一实施例中, 所述运动器械上设置虚拟激光器, 用于帮助直观显示所述运动器械 的运动轨迹。 在一实施例中, 绑定在所述人体上的运动测量模块的数量根据不同的测量模式进行 升级。
在一实施例中, 所述的传感器模块包括:
三轴 MEMS微加速度计, 用于测量所述运动测量模块的加速度;
三轴 MEMS微陀螺仪, 用于测量所述运动测量模块的角速度。
在一实施例中, 所述的传感器模块包括:
三轴 MEMS微加速度计, 用于测量所述运动测量模块的加速度;
三轴 MEMS微陀螺仪, 用于测量所述运动测量模块的角速度;
三轴 MEMS磁力计, 用于测量所述运动测量模块的磁力。
在一实施例中, 所述的第一微处理器模块具体用于: 根据所述三轴 MEMS微加速度 计测量的所述重力加速度向量及所述三轴 MEMS磁力计测量的磁力向量计算生成所述运 动测量模块的静态三维姿态角度; 根据所述三轴 MEMS微陀螺仪测量的角速度计算生成 所述运动测量模块的动态三维姿态角度; 采用所述的静态三维姿态角度对所述的动态三 维姿态角度进行修正, 得到所述的运动测量模块的方位信息。
本发明实施例的有益效果在于, 通过本发明的多节点运动测量与分析系统, 可以同 时测量运动器械和人体的运动信息, 从而获得人体与运动器械的协调运动情况以协助用 户建立正确的运动方式; 并且可以根据实际需要灵活配置运动测量模块的位置和数量, 使得系统能够在使用较少的运动测量模块的情况下获得所需的运动器械和人体的有用的 运动信息, 降低了成本。 附图说明 为了更清楚地说明本发明实施例或现有技术中的技术方案, 下面将对实施例或现有 技术描述中所需要使用的附图作简单地介绍, 显而易见地, 下面描述中的附图仅仅是本 发明的一些实施例, 对于本领域普通技术人员来讲, 在不付出创造性劳动性的前提下, 还可以根据这些附图获得其他的附图。
图 1为本发明实施例多节点运动测量与分析系统的一具体实例的示意图; 图 2为本发明实施例多节点运动测量与分析系统的一具体实例的示意图; 图 3为本发明实施例多节点运动测量与分析系统的一具体实例的示意图; 图 4为本发明实施例多节点运动测量与分析系统的一具体实例的示意图; 图 5为本发明实施例的运动测量模块的一具体实例的结构示意图; 图 6为本发明实施例多节点运动测量与分析系统的一具体实例的示意图
图 7为本发明实施例多节点运动测量与分析系统的一具体实例的示意图
图 8为本发明实施例多节点运动测量与分析系统的一具体实例的示意图
图 9为本发明实施例多节点运动测量与分析系统的一具体实例的示意图
图 10所示为本发明实施例的多节点运动测量与分析系统的使用流程图;
图 11为本发明实施例的运动测量模块的一具体实例的结构示意图。 具体实施方式 下面将结合本发明实施例中的附图, 对本发明实施例中的技术方案进行清楚、 完整 地描述, 显然, 所描述的实施例仅仅是本发明一部分实施例, 而不是全部的实施例。 基 于本发明中的实施例, 本领域普通技术人员在没有做出创造性劳动前提下所获得的所有 其他实施例, 都属于本发明保护的范围。
如图 1及图 2所示, 本发明实施例提供一种多节点运动测量与分析系统, 所述的多 节点运动测量与分析系统包括: 至少一个运动测量模块 101及一接收器单元 103; 运动 测量模块 101通过可调节夹具绑定在运动器械 100上, 或者绑定在人体 200上, 并且运 动测量模块 101在人体 200上的绑定位置可以根据不同的测量需求重新分布。
安装到运动器械 100的运动测量模块 101通过调节可调节夹具的方式安装, 可调节 夹具可以固定到运动器械的各个位置。 运动测量模块 101与可调节夹具可以分离, 使得 安装在运动器械 100的运动测量模块 101可以方便的安装到人体 200的各个部位。 如图 1所示, 运动测量模块 101通过可调节夹具绑定在运动器械 100上, 如图 2所示, 运动 测量模块 101绑定在人体 200上。
本发明实施例仅利用一个能随意安装到人体或运动器械上的运动测量模块, 就可以 测量人体及运动器械的运动信息, 根据实际需要灵活配置运动测量模块的位置, 降低了 成本。
如图 3所示, 运动测量模块的数量为 2, 其中一个运动测量模块 101绑定在运动器 械 100上; 另一个运动测量模块 102绑定在人体 200上, 并且运动测量模块 102在人体 200上的绑定位置可以根据不同的测量模式重新分布。 在一实施例中, 绑定在人体 200上的运动测量模块 102的数量根据不同的测量模式 进行升级。 从而可以在运动测量模块比较少、 成本比较低的情况下获得更多的身体部位 的运动信息。 为了根据不同的测量模式进行升级, 要求运动测量模块 102为无线的运动 测量模块, 人体上各个运动测量模块分别通过无线方式与接收器单元 103连接。 现有技 术中, 绑定在人体上的多个传感器分别有线连接至绑定在人体上的中控模块, 通过中控 模块上送各个传感器的运动测量信息, 因为中控模块上的接口有限, 连接中控模块的传 感器的数量有限, 并且在增加传感器的情况下, 接收器单元 103没有处理新增加的传感 器测量的数据的功能。 而本申请的多个运动测量模块 102分别无线连接 (可以通过射频 RF模块连接) 至接收器单元 103, 没有接口的限制。 本申请的接收器单元 103可以实现 多达 20个运动测量模块数据的传输和处理, 软件上提供了升级功能的支持, 因而可以方 便的根据需求对系统中运动测量模块的数量进行升级。
如图 4所示, 运动测量模块的数量为多个, 其中一个运动测量模块 101绑定在运动 器械 100上; 另外的多个运动测量模块 102绑定在人体 200上, 并且在人体 200上的绑 定位置可以根据不同的测量模式重新分布。 运动测量模块 101及运动测量模块 102组成 了多节点运动测量与系统。
对于图 3及图 4的实施例中运动测量模块的数量为 2或者多个的情况, 其中一个模 块是安装在运动器械上的, 该运动测量模块通过可调节夹具或者机械集成的方式绑定在 运动器械上。
如图 1至图 4所示, 运动测量模块 101及运动测量模块 102包括: 传感器模块 104, 第一微处理器模块 105及第一 RF模块 106。 传感器模块 104用于测量所述运动测 量模块的加速度、 角速度及磁力信息; 第一微处理器模块 105连接传感器模块 104, 用 于根据所述的加速度、 角速度及磁力信息生成方位信息; 第一 RF模块 106连接所述的 第一微处理器模块, 用于接收的加速度、 角速度、 磁力及方位信息, 并发送给接收器单 元 102。
在一实施例中, 如图 1至图 4所示, 运动测量模块 101及运动测量模块 102还可以 包括: 第一电池 112及第一电源及电压转换模块 113, 第一电池 112通过第一电源及电 压转换模块 113给传感器模块 104、 第一微处理器模块和第一 RF模块供电; 通过第一电 源及电压转换模块 113, USB电源可以第一电池 112进行充电。 接收器单元 103接收各个运动测量模块中的所述的第一 RF模块 106发送来的加速 度、 角速度、 (或) 磁力及方位信息, 并根据的加速度、 角速度、 或磁力及方位信息生 成人体及运动器械的运动轨迹、 线 /角速度、 角度、 位移、 运动时序等运动信息。
接收处理器单元 103可以置于远离人体的附近, 也可以绑定到人体上, 还可以与绑 定人体的某个运动测量模块集成在一起。
对于图 1及图 2中的多节点运动测量与分析系统只有一个运动测量模块的情况, 传 感器模块 104可以只测量运动测量模块的加速度、 角速度信息, 不需要测量磁力信息, 第一微处理器模块 105根据所述的加速度、 角速度信息生成方位信息即可。 接收器单元 102该运动测量模块中的第一 RF模块 106发送来的加速度、 角速度及方位信息, 并根据 的加速度、 角速度及方位信息生成人体及运动器械的运动轨迹、 线 /角速度、 角度、 位 移、 运动时序等运动信息。
在一实施例中, 如图 5所示, 传感器模块 104包括三轴 MEMS微加速度计 201, 三 轴 MEMS微陀螺仪 202及三轴 MEMS磁力计 203。 三轴 MEMS微加速度计 201可以测 量所述运动测量模块的加速度, 三轴 MEMS微陀螺仪 202可以测量所述运动测量模块的 角速度, 三轴 MEMS磁力计 203可以测量所述运动测量模块的磁力。 第一微处理器模块 105可以根据三轴 MEMS微加速度计 201测量的重力向量及三轴 MEMS磁力计 203测量 的地磁向量计算生成运动测量模块的静态三维姿态角度; 根据三轴 MEMS微陀螺仪 202 测量的角速度计算生成运动测量模块的动态三维姿态角度; 采用运动测量模块的静态三 维姿态角度对动态三维姿态角度进行修正, 获得运动测量模块的方位信息。 所述的人体 各个部位与运动器械的运动时序包括身体各个部位与运动器械的加速度在时间轴上达到 峰值的先后顺序, 达到峰值的时间间隙的大小, 加速度峰值的大小; 身体各部位与运动 器械的速度在时间轴上达到峰值的先后顺序, 达到峰值的时间间隙的大小, 速度峰值的 大小; 身体各部位与运动器械的角度在时间轴上达到峰值的先后顺序, 达到峰值的时间 间隙的大小, 角度峰值的大小。
在一实施例中, 针对图 1及图 2中的多节点运动测量与分析系统只有一个运动测量 模块的情况, 如图 11所示, 传感器模块 104包括三轴 MEMS微加速度计 201, 三轴 MEMS微陀螺仪 202。 三轴 MEMS微加速度计 201可以测量所述运动测量模块的加速 度, 三轴 MEMS微陀螺仪 202可以测量所述运动测量模块的角速度。 第一微处理器模块 105可以根据三轴 MEMS微加速度计 201测量的重力向量计算生成运动测量模块的静态 倾角; 根据三轴 MEMS微陀螺仪 202测量的角速度计算生成运动测量模块的动态三维姿 态角度。
运动测量模块在人体上的绑定位置根据不同的测量模式 (不同的测试需求对应不同 的测量模式) 重新分布。 比如本次测量需要测量头部的运动状况, 下一次测量可能需要 测量肩部的运动状况, 再下一次测量可能需要测量腿部的运动状况, 运动测量模块可以 根据测量需求安装到上述不同的测量部位。 在各个运动测量模块第一次安装或者更换安 装位置时, 需要在接收器单元的人机交互界面上指定各个运动测量模块的实际安装位 置。
接收器单元 103还可以对运动测量模块在绑定到人体上不同位置时进行校准。 如上 所述, 在各个运动测量模块第一次安装或者更换安装位置时, 需要利用接收器单元 103 对更换到人体不同位置的运动测量模块或者新增的运动测量模块进行校准。 在接收器单 元 103的人机交互界面指定运动测量模块位置和数量后, 接收器单元 103根据运动测量 模块安装的位置以及数量给出相应的校准流程指引, 用户遵照指引完成给定的校准动作 以消除模块的安装绑定误差。
校准的原则是使运动测量模块安装部位处于一个已知的姿态, 然后根据测得的运动 测量模块的姿态与已知的身体部位姿态对比确定运动测量模块安装方位的偏差。 例如对 于校准安装在臀部的单个运动测量模块的校准动作情况, 人的校准动作为自然站立。 例 如对于背部单个运动测量模块的校准动作, 为了使双肩水平, 双手持一个 Pad, 那么人 的标准校准动作为双肩水平, 双手水平向前伸直持一个 Pad的姿势。 例如对于某手腕处 模块的校准动作的情况, 可能是手朝前平举手心朝下作为标准校准动作。
接收器单元 103还可以根据人体生物力学约束及外界约束对计算生成的运动信息进 行校准。
接收器单元 103可以为一终端设备, 或者接收器单元 103包括接收处理器和终端设 备, 该终端设备包含: 智能手机、 掌上电脑、 平板电脑、 电视或 PC等。 针对接收器单 元 103为终端设备的实施例, 及接收器单元 103包括接收处理器和终端设备的实施例, 下面分别说明。
1、 接收器单元 103为一终端设备
具体实施时, 终端设备可以通过蓝牙或者其他无线模块接收各个运动测量模块中的 第一 RF模块 106发送来的加速度、 角速度等传感器信息, 并根据接收的传感器信息生 成运动信息, 并将当前人体及运动器械的运动信息与预先设定的参考运动信息进行对 比, 生成比较结果。
在一实施例中, 终端设备包括人机交互模块, 终端设备将上述比较结果发送给人机 交互模块, 人机交互模块根据比较结果进行声光或者振动提示。 在一实施例中, 人机交 互模块还可以是跟某个运动测量模块集成在一起。
在一实施例中, 终端设备还可以包括: 显示器及存储器, 显示器可以用于显示人体 与运动器械的运动轨迹、 姿态、 人体与运动器械的运动时序、 运动速度等运动信息。 存 储器可以存储上述的运动信息及标准的参考运动轨迹或者运动时序, 以根据标准的参考 运动轨迹或运动时序对人体的运动提供实时的指导和反馈。
本发明实施例的多节点运动测量与分析系统可以实现各个运动测量模块之间的时间 同步, 该时间同步可以为点对点的同步方式。
在一实施例中, 某个运动测量模块 (如安装在运动器械上的运动模块或者人体上 的) 发送同步命令给其他的运动测量模块进行时间同步。 根据该同步命令, 终端设备可 以根据实时收到的各个运动测量模块的数据确定人体的各个部位的运动时序。
在一实施例中, 也可以由终端设备发起同步的方式, 即终端设备发送同步命令给所 有运动测量模块进行同步。 根据该同步命令, 终端设备可以根据实时收到的各个运动测 量模块的数据确定人体的各个部位的运动时序。
2、 接收器单元 103包括接收处理器 600和终端设备 114
如图 6至图 9所示, 接收处理器 600包括: 第二 RF模块 107、 第二微处理器模块 108、 第三 RF模块 109及 USB模块 110。
第二 RF模块 107用于接收各个运动测量模块中的第一 RF模块 106发送来的加速 度、 角速度运动测量模块的传感器信息, 并将传感器信息发送给第二微处理器模块
108。
第二微处理器模块 108连接第二 RF模块 107, 用于根据传感器信息生成运动信息, 并通过第三 RF模块 109或 USB模块 110将运动信息发送给终端设备 1114。 第二微处理 器模块 108还可以将当前人体及运动器械的运动信息与预先设定的参考运动信息进行对 比, 生成比较结果。
接收器单元 103还可以包括: 人机交互模块 111, 第二微处理器模块 108将上述比 较结果发送给人机交互模块 111, 人机交互模块 111根据比较结果进行声光或者振动提 示。 在一实施例中, 人机交互模块还可以是跟某个运动测量模块集成在一起。 接收器单元 103还可以包括: 显示器 115及存储器 116, 显示器 115 (可以是电视 机) 可以用于显示人体与运动器械的运动轨迹、 姿态、 人体与运动器械的运动时序、 运 动速度等运动信息。 存储器 116可以存储上述的运动信息及标准的参考运动轨迹或者运 动时序, 以根据标准的参考运动轨迹或运动时序对人体的运动提供实时的指导和反馈。
在一实施例中, 第二微处理器模块 108不对加速度、 角速度、 磁力及方位信息进行 复杂处理, 仅将加速度、 角速度、 磁力及方位信息进行打包等简单处理后, 通过第三 RF 模块 109或 USB模块 110发送给终端设备 114, 由终端设备 114进行处理。 终端设备 114根据传感器信息生成运动信息, 并将运动信息与预先设定的参考运动信息进行比 对, 生成比对结果。
在一实施例中, 接收器单元 103还可以包括第二电源和电压转换模块 117, 第二 RF 模 107、 第二微处理器模块 108、 第三 RF模块 109、 人机交互模块 111等通过第二电源 和电压转换模块 117供电。
本发明实施例的多节点运动测量与分析系统还可以实现各个运动测量模块之间的时 间同步, 该时间同步可以为点对点的同步方式。
在一实施例中, 某个运动测量模块 (如安装在运动器械上的运动模块或者人体上 的) 发送同步命令给其他的运动测量模块进行时间同步。 根据该同步命令, 接收处理器 600或者终端设备 114可以根据实时收到的各个运动测量模块的数据确定人体的各个部 位的运动时序。
在一实施例中, 也可以由接收处理器 600发起同步的方式, 即接收处理器 600发送 同步命令给所有运动测量模块进行同步。 根据该同步命令, 接收处理器 600或者终端设 备 114可以根据实时收到的各个运动测量模块的数据确定人体的各个部位的运动时序。
在一实施例中, 还可以为终端设备 114发起同步的方式, 即终端设备 114发送同步 命令给接收处理器 600, 由接收处理器 600或者终端设备 114再发同步命令给所有运动 测量模块, 或者终端设备 114直接发送同步命令给所有的运动测量模块进行同步。 根据 该同步命令, 接收处理器 600或者终端设备 114可以根据实时收到的各个运动测量模块 的数据确定人体的各个部位以及运动器械的运动时序。
本发明具体实施时, 运动信息包括人体与运动器械在各个时刻的三维姿态、 运动轨 迹、 运动速度与位移、 实际运动姿态与参考运动姿态之间的偏差、 实际运动轨迹与参考 运动轨迹之间的偏差、 人体与运动器械的协调运动时序等。 所述的人体各个部位与运动 器械的运动时序包括身体各个部位与运动器械的加速度在时间轴上达到峰值的先后顺 序, 达到峰值的时间间隙的大小, 加速度峰值的大小; 身体各部位与运动器械的速度在 时间轴上达到峰值的先后顺序, 达到峰值的时间间隙的大小, 速度峰值的大小; 身体各 部位与运动器械的角度在时间轴上达到峰值的先后顺序, 达到峰值的时间间隙的大小, 角度峰值的大小。
本发明具体实施时, 接收器单元 103还可以将预先设定的参考运动信息中的运动轨 迹以 3D图形显示, 并把运动信息中的运动轨迹以 3D图形显示。 通过接收器单元 103的 显示屏以 3D图形的方式把目标运动信息 (如球杆或者人体的运动轨迹、 运动时序等) 显示到显示屏上, 用户可以缓慢的运动努力使自己的实际运动情况与屏幕上的目标运动 信息重叠和吻合, 接收器单元 103把测量到的挥杆运动数据与设定的挥杆运动数据进行 比较, 并根据比较结果对训练者进行语音或者其他方式的提醒。 在确保真实运动信息能 够与目标运动信息吻合的基础上, 用户可以逐渐提升运动速度, 最终达到在正常运动速 度下实际运动信息能够与标准运动信息很好的吻合, 从而可以建立准确的运动方式, 达 到良好的训练效果。
手持式运动器械可以为高尔夫球杆、 网球拍、 羽毛球拍、 棒球杆、 壁球杆、 曲棍球 杆等, 本发明仅以高尔夫球杆进行说明。
本发明具体实施时, 完成运动后, 用户可以在接收器单元的软件界面上浏览刚刚完 成的动作信息, 比如身体某部位的运动轨迹、 运动器械的运动轨迹、 人体或者运动器械 的运动速度、 在某时间点身体和运动器械的姿态、 人体和运动器械的协调运动时序等, 也可以对历史运动数据进行浏览和比较。 为了使观看运动轨迹更直观, 在接收器单元的 人机交互界面上, 可以使用一些虚拟的辅助器械 (如虚拟激光、 虚拟平面等) 等辅助图 形显示, 比如在运动器械的一端安装虚拟激光器, 通过激光在地面的投影, 使得挥杆过 程中杆的在空中的轨迹及地面投影的轨迹清楚直观的显示, 可以直观的看到运动器械在 空中的摆动轨迹。 例如在高尔夫球挥杆运动中, 在高尔夫球杆杆头平面法线方向或者竿 头平面法线方向安装激光器, 则可以直观的看到球杆在摆动过程的扭转情况。 运动数据 可以在本地进行存储, 也可以通过网络进行分享。
本发明具体实施时, 运动测量模块可以通过夹具绑定在所述手持式运动器械上, 或 者通过机械集成的方式绑定在手持式运动器械上。 在完成夹具的安装校准后, 运动测量 模块安装到夹具上不再需要进行校准流程。 绑定在人体上的运动测量模块可以通过传感 器服、 绑带或者是两者相结合的方式绑定在人体上。 本发明具体实施时, 用户所从事运动的整个运动过程可以由几个关键帧划分为不同 的运动阶段, 如对于高尔夫挥杆运动, 其挥杆过程的关键帧包括初始球杆对齐、 挥杆到 达的最高点、 挥杆的击球点等; 除了所述的划分运动阶段的关键帧, 整个过程还可以包 括一些感兴趣的关键帧, 如挥杆时双手到达水平位置、 双手到达最低点的位置等。 运动 过程的关键帧可以利用运动测量模块, 根据加速度及姿态进行确定。
运动过程中的关键帧由某个特定运动测量模块 (如安装于手持式运动器械上的运动 测量模块) 或者多个运动测量模块综合运动测量数据实时确定, 根据所述的关键帧的检 测系统自动完成整个运动过程的测量和记录。 关键帧的确定可以根据加速度及静止姿态 等信息, 例如判断初始球杆对齐的关键帧时, 可以根据加速度及静止姿态判断是不是初 始球杆对齐。
本发明具体实施时, 多节点运动测量与分析系统还可以设置参考目标运动姿态 /运动 时序以及运动器械轨迹方向。 可以通过调整接收器单元上的软件界面的模型的运动轨 迹, 直接调用已保存的教练的或其他人的运动轨迹。 参考目标运动姿态 /运动时序可以为 手动设置的或者采用实际捕捉的自己或者其他人运动姿态 /运动时序。 运动器械的目标轨 迹方向可以为: 把运动器械或者运动测量模块沿目标运动方向水平放置于地面后, 按接 收器单元软件界面上的相应按钮。 接收器单元还可以记录当前手持式运动器械或者运动 测量模块的方位并把此方位作为后面运动轨迹方向的一个参考。
图 10所示为本发明实施例的多节点运动测量与分析系统的使用流程图, 如图 10所 示, 该流程包括:
S1001 : 把各个运动测量模块安装到人体和运动器械上。
在一实施例中, 安装到运动器械上的方式为可调节、 便于拆卸的夹具安装方式。 夹 具可以紧固安装到不同直径的运动器械上。 运动测量模块可以方便的安装到夹具上, 也 可以方便的拆下来安装到另一个运动器械的夹具上。 运动测量模块安装到人体的方式可 以为绑带安装, 也可以采用特定的传感器服进行安装, 还可以是两者的结合。
S1002: 开启系统并制定各个运动测量模块的安装位置。
完成各个模块的安装固定后, 开启各个运动测量模块的电源以及接收器单元的电 源, 建立接收器单元与运动测量模块的连接, 并在接收器单元的人机交互界面上指定各 个运动测量模块的安装位置。
S1003: 对各个运动测量模块的安装位置进行校准。 安装到运动器械的运动测量模块的校准通过夹具安装时对夹具的校准实现, 运动测 量模块安装到夹具上时不再需要进行校准。 运动测量模块安装到人体时, 需要对人体的 安装位置进行校准。 具体做法是, 根据运动测量模块的数量和安装位置进行一系列的校 准动作完成安装位置和方位的校准。
S1004: 对运动测量与分析系统的工作模式进行选择。
运动测量与分析系统的工作模式有两种, 一种为测量模式, 另一种为指导模式。 S1005: 进行测量模式。
在此模式下用户自由进行运动, 运动测量系统把用户的真实运动情况捕捉下来, 供 用户进行分析和研究; 另一种为指导模式, 在此模式下需要设定标准的运动信息, 如标 准的人体和运动器械的运动时序、 运动轨迹等, 用户按照显示屏上的标准运动信息的指 导进行慢速跟随练习, 然后逐步提高速度直到正常速度。 运动测量与分析系统还根据捕 捉到的用户实际运动与参考运动的偏离情况提供实时的反馈。
S1006: 进行指导模式。
若选定了指导模式, 接下来可以设定运动器械的目标运动方向以及人体和运动器械 的标准运动信息。 设定运动器械目标运动方向的方法可以为把运动器械或者运动测量模 块沿目标运动方向摆好, 然后按接收器单元软件界面上相应的按钮完成设定。 设定运动 器械和人体的标准运动信息, 可以为在接收器单元软件界面上手动对目标姿态、 轨迹、 时序等进行设定和调节, 也可以直接采用捕捉到的自己或者其他人的实际运动信息数据 作为目标运动信息。
接下来用户可以正常进行运动了。 在运动过程中, 各个运动测量模块把相应绑定对 象的运动数据 (包括加速度、 角速度、 磁力信号等) 采集下来并计算相应的空间姿态, 然后把采集数据以及计算的结果发送给接收器单元。 接收器单元根据无线接收的各个运 动测量模块的运动数据, 计算身体或者运动器械的位置、 线 /角速度、 姿态角度、 运动时 序、 运动轨迹等信息。
S1007: 运动跟随。
若当前工作模式为指导模式, 接收器单元的显示屏上会以 3D图形的方式将目标运 动信息显示出来, 用户可以缓慢运动以努力使自己的实际运动与显示的标准运动信息重 叠。 接收器单元还会根据用户实际运动与标准参考运动的偏差给出相应的提示。
S1008: 完成运动后, 用户可以在接收器单元的软件界面上浏览刚刚完成的动作信 息, 比如身体某部位的运动轨迹、 运动器械的运动轨迹、 在某时间点身体和运动器械的 姿态、 人体和运动器械的协调运动时序等, 也可以对历史运动数据进行浏览和比较。 为 了使观看运动轨迹更直观, 在接收器单元的人机交互界面上, 可以使用一些虚拟的辅助 器械 (如虚拟激光、 虚拟平面等) 等辅助图形显示, 比如在运动器械的一端安装虚拟激 光器, 通过激光在地面的投影, 可以直观的看到运动器械在空中的摆动轨迹; 比如在高 尔夫球挥杆运动中, 在高尔夫球杆杆头平面法线方向安装激光器, 则可以直观的看到球 杆在摆动过程的扭转情况。 运动数据可以在本地进行存储, 也可以通过网络进行分享。
下面结合高尔夫挥杆训练的具体的例子对本发明的具体实施方式进行说明。
1、 两节点运动测量与分析系统举例:
在本实施例中, 运动测量与分析系统包括两个运动测量模块和一个智能手持式设 备。 运动测量模块通过蓝牙与智能手持式设备连接。 一个运动测量模块通过夹具安装在 高尔夫球杆上, 另一个运动测量模块则通过绑带或者传感器服绑定到手腕或者头部、 背 部等其他部位。
智能手持式设备可以为智能手机、 掌上电脑、 平板电脑等安装了相应终端软件的手 持式设备。 智能手持式设备可以放在人身上 (如口袋中) , 也可以放在一侧地上或者架 子上。
运动测量模块中的微处理器模块可以根据传感器模块测得的加速度、 磁力以及角速 度等信息可以计算运动测量模块的绝对空间方位 (相对于大地坐标) 和相对的空间位移
(相对于初始位置) 。 运动测量模块中的 RF模块把传感器的原始测量数据和计算的结果 数据以无线的方式发送给智能手持式设备。 智能手持式设备根据接收到的数据可以计算 一些衍生的挥杆运动数据, 如击球的速度、 角度、 击球的身体与球杆的运动时序等。
在使用两节点运动测量与分析系统时, 首先把运动测量模块的夹具安装到高尔夫球 杆上, 若需要使用多根球杆, 可以在每个球杆上都安装上夹具。 在安装夹具的时候对齐 夹具的安装位置。 然后把一个运动测量模块卡扣到待使用的球杆的夹具上。 然后把另一 个运动测量模块通过绑带或者传感器服的方式绑定到身体的某部位, 如手腕处。 然后把 两个传感器的电源打开, 运动测量模块在电源开启后自动进入节能的待机模式。 然后开 启智能手持式设备的相应终端软件, 在软件中选择要使用的球杆, 指定人体安装运动测 量模块的安装位置, 并建立智能手持式设备与运动测量模块之间的无线通信连接。 建立 连接后, 运动测量模块进入工作模式。 运动测量模块可以用一个指示灯对模块不同的工 作状态进行指示, 譬如待机模式下, 指示灯慢速闪烁; 建立连接过程中, 指示灯快速闪 烁; 建立连接后, 运动测量模块进入工作模式, 指示灯常亮。 在智能手持式设备与运动测量模块建立连接后, 需要对安装到身体上的运动测量模 块进行安装位置的校准操作。 比如身体上的模块安装在手腕位置时, 终端设备要求你做 一个手臂朝前平举 (手心朝下) 的动作。 按照智能手持式设备上的提示完成校准动作 后, 在改变传感器安装位置之前都不需要再进行校正的流程。
接下来, 可以设定击球的目标方向。 设定击球的目标方向可以为把球杆沿击球方向 水平放置, 然后按智能手持式设备的终端软件界面上的设定击球目标方向的按钮, 即完 成目标方向的设定, 终端软件会保存球杆上运动测量模块的沿球杆的方向并将其作为目 标击球方向, 在后续的显示中会将目标击球方向与实际击球轨迹进行比较。 还可以对挥 杆过程一些关键点的目标球杆角度进行设定, 比如上杆过程到最高点时球杆的角度等。
上面的设定击球目标方向以及目标球杆姿态的步骤为可选的步骤, 即也可以在完成 传感器安装和校准后直接进入挥杆运动的测量。
在挥杆之前, 一般球手都会做高尔夫球杆头与球对准的动作, 运动测量模块会对此 动作进行侦测, 一旦检测到此动作, 则会自动在对准过程中对运动测量模块的空间方位 进行标定。 具体的标定方法是模块根据磁力计以及加速度计的测量信号, 得到运动测量 模块的绝对空间方位, 并以此作为运动测量模块的计算空间方位。 标定完成后, 运动测 量模块给智能手持式设备发送控制命令, 智能手持式设备会发出提示声音并发送同步命 令给两个运动测量模块, 同时启动数据记录。 运动测量模块收到同步命令后对模块发送 数据的编号进行清零。 智能手持式设备收到相同编号的运动测量数据则表示该组数据为 同一时刻采集的。
本发明运动测量与分析系统可以侦测击球事件, 侦测的方法是在对准事件发生后如 果监测到设定范围的加速度的突变, 则判定为击球事件。 在检测到击球事件后, 运动测 量模块同样发生控制命令给智能手持式设备, 智能手持式设备会保存两个事件 (对准与 击球) 之间的数据, 并根据这些数据计算球的飞行轨迹、 飞行距离、 挥杆力量比例等衍 生数据, 同时结束数据的记录和保存。 如果运动测量模块在一定时间内没有侦测到任何 事件 (对准事件以及击球事件) , 则运动测量模块会自动进入待机状态以节约能量。 有 的球手可能在击球之前会有多次对齐的动作, 智能手持式设备将以击球前的最后一次对 齐动作作为对准事件。 通过对一些事件的侦测, 挥杆 /拍辅助训练装置自动完成对挥杆过 程的自动测量控制而不需要额外的辅助装置以及操控动作。 若在上一步中没有进行目标 击球方向的设定, 则智能手持式设备会把对齐事件发生时杆头平面的法线方向作为目标 击球方向。 若在上一步中设定了挥杆过程中的目标球杆姿态, 则在挥杆过程中, 智能手持式设 备会给出相应的提示, 例如上杆过程球杆角度达到设定的最高点角度时, 智能手持式设 备会给出下杆的提示声音。
在完成挥杆击球过程后, 球手可以在智能手持式设备上对刚刚完成的挥杆动作进行 浏览和分析。 智能手持式设备会以图形的方式显示挥杆过程的球杆的运动轨迹、 击球的 角度和速度、 球的参考飞行轨迹、 人体与球杆的协调运动时序等。 为了更直观的看到球 杆的运动情况, 在智能手持式设备的图形界面的高尔夫球杆的一端安装虚拟激光器, 通 过激光在地面的投影, 可以直观的看到球杆在空中的摆动轨迹。 在高尔夫球杆杆头平面 法线方向还可以安装激光器, 可以直观的看到球杆在摆动过程的扭转情况。 若身体上的 运动测量模块安装在手腕上, 则可以看到手腕的运动轨迹、 手握球杆的角度的变化轨 迹; 若安装在头部, 则可以看到头部扭转和俯仰的轨迹; 若安装在躯干上, 则可以看到 身体扭转的轨迹等等。 通过变换人体安装运动测量模块的安装位置, 可以得到球杆与对 应身体某部位的运动时序图, 通过对球杆与身体不同部位时序图的分析, 球手可以判断 自己的身体发力顺序是否正确, 从而能够根据分析结果进行改进。
2、 多节点半身运动测量分析系统举例
本实施例中, 多节点半身运动测量与分析系统包括 12个运动测量模块, 一个接收处 理器模块和一个终端设备。 多节点半身运动测量系统除了在高尔夫球杆上绑定一个运动 测量模块, 还在半身 (如上半身的手、 上臂、 下臂、 肩部、 头、 背、 臀部等处) 绑定 11 个运动测量模块, 因此, 多节点半身运动测量系统可以同时测量球杆以及半身的运动。 接收处理器模块与各个运动测量模块以无线方式进行通讯。 接收处理器模块包括一个无 线接收天线, 使得训练者可以在一定范围内活动的同时还能进行良好的无线通讯。 接收 处理器模块以无线的方式接收各个运动测量模块的运动测量数据并发送给终端设备。 终 端设备为一 PC或者一平板电脑。 接收处理器模块与终端设备通过 USB进行数据传输并通 过 USB从终端设备获得电源。 终端设备获得接收处理器模块发送过来的运动测量数据后 进行处理和计算, 获得人体和运动器械的有用的运动信息, 运动信息包括人与运动器械 的运动轨迹、 姿态、 速度、 运动时序等。 终端设备还把运动数据以图形或者数字的形式 显示出来。 终端设备上还保存标准的参考运动信息以对人的运动提供指导。
具体使用多节点半身运动测量分析系统时, 首先把 11个模块按照指定的顺序绑定到 身体相应部位, 如果不是按照指定的顺序安装, 则需要在终端设备的界面上设定实际的 安装方式。 然后开启各个模块的电源并在终端设备上开启相应运动测量终端软件, 在软 件中输入训练者的身高、 臂展、 臀高等数据, 然后建立软件与运动测量模块之间的连 接。
完成连接后, 接收处理器模块会进行一个运动测量模块的同步过程。 具体的实现方 式是: 接收处理器模块发送一个同步的指令给所有的运动测量模块, 各个运动测量模块 在收到指令后同时对发送数据的编号进行清零。 完成同步后, 就可以进行人体上的各个 运动模块安装误差的校准, 按照软件的指示, 训练者依次摆出指定的校准动作或者姿态 如 T姿态、 自然站立姿态、 云手动作等。 终端设备根据人体所摆的姿态以及所做的动作 对模块的按照误差以及身体各部分尺寸偏差进行修正, 从而能够准确的测量人体运动数 据。 接下来把最后一个运动测量模块通过夹具的方式安装到球杆的指定位置并在终端设 备上选定相应的球杆。
在训练中, 如果选定了系统的工作模式为指导模式, 则可以设定人的标准运动信息 以及击球的目标轨迹等, 设定的方法可以为通过网络下载的标准的挥杆运动数据, 也可 以为捕捉到的自己的实际运动数据。 最后就可以进行正常的挥杆训练。 在挥杆过程中, 运动测量模块同样会对对准事件以及击球事件进行侦察, 从而会自动完成挥杆过程的数 据捕捉和记录。
在训练中, 如果工作模式选择了指导模式, 终端设备会以 3D图形的方式把目标运动 信息 (如球杆或者人体的运动轨迹、 运动时序等) 显示到显示屏上, 用户可以缓慢的运 动努力使自己的实际运动情况与屏幕上的目标运动信息重叠和吻合, 终端设备把测量到 的挥杆运动数据与设定的挥杆运动数据进行比较, 并根据比较结果对训练者进行语音或 者其他方式的提醒。 在确保真实运动信息能够与目标运动信息吻合的基础上, 用户可以 逐渐提升运动速度, 最终达到在正常运动速度下实际运动信息能够与标准运动信息很好 的吻合, 从而可以建立准确的运动方式, 达到良好的训练效果。
在本实施例中, 绑定到身体的各个运动测量模块可以取下来重新安装到新的位置上 去, 比如把手、 上臂、 下臂的模块取下来安装到脚、 小腿、 大腿上, 则可以对下半身及 躯干的运动进行测量和运动指导。 从而在运动模块数量比较少、 成本比较低的情况下完 成全身的运动测量和指导。
本领域内的技术人员应明白, 本发明的实施例可提供为方法、 系统、 或计算机程序 产品。 因此, 本发明可采用完全硬件实施例、 完全软件实施例、 或结合软件和硬件方面 的实施例的形式。 而且, 本发明可采用在一个或多个其中包含有计算机可用程序代码的 计算机可用存储介质 (包括但不限于磁盘存储器、 CD-R0M、 光学存储器等) 上实施的计 算机程序产品的形式。
本发明是参照根据本发明实施例的方法、 设备 (系统) 、 和计算机程序产品的流程 图和 /或方框图来描述的。 应理解可由计算机程序指令实现流程图和 /或方框图中的每一 流程和 /或方框、 以及流程图和 /或方框图中的流程和 /或方框的结合。 可提供这些计算机 程序指令到通用计算机、 专用计算机、 嵌入式处理机或其他可编程数据处理设备的处理 器以产生一个机器, 使得通过计算机或其他可编程数据处理设备的处理器执行的指令产 生用于实现在流程图一个流程或多个流程和 /或方框图一个方框或多个方框中指定的功能 的装置。
这些计算机程序指令也可存储在能弓 I导计算机或其他可编程数据处理设备以特定方 式工作的计算机可读存储器中, 使得存储在该计算机可读存储器中的指令产生包括指令 装置的制造品, 该指令装置实现在流程图一个流程或多个流程和 /或方框图一个方框或多 个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上, 使得在计算 机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理, 从而在计算机或 其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和 /或方框图一 个方框或多个方框中指定的功能的步骤。
本发明中应用了具体实施例对本发明的原理及实施方式进行了阐述, 以上实施例的 说明只是用于帮助理解本发明的方法及其核心思想; 同时, 对于本领域的一般技术人 员, 依据本发明的思想, 在具体实施方式及应用范围上均会有改变之处, 综上所述, 本 说明书内容不应理解为对本发明的限制。

Claims

权利要求书
1、 一种多节点运动测量与分析系统, 其特征在于, 所述的多节点运动测量与分析系 统包括: 至少一个运动测量模块及一接收器单元; 所述运动测量模块通过可调节夹具绑 定在运动器械上, 或者绑定在人体上, 并且在所述人体上的绑定位置根据不同的测量需 求重新分布;
所述的运动测量模块包括:
传感器模块, 用于测量所述运动测量模块的加速度、 角速度信息;
第一微处理器模块, 连接所述的传感器模块, 用于根据所述的加速度、 角速度信息 生成方位信息;
第一 RF模块, 连接所述的第一微处理器模块, 用于接收所述的加速度、 角速度及 方位信息, 并发送给所述的接收器单元;
所述的接收器单元接收各个所述的运动测量模块中的所述的第一 RF模块发送来的 加速度、 角速度及方位信息, 根据所述的加速度、 角速度及方位信息生成运动信息; 并 且对运动测量模块在绑定到人体上不同位置时进行校准。
2、 根据权利要求 1所述的多节点运动测量与分析系统, 其特征在于, 所述运动测量 模块的数量为 2或多个, 其中一个运动测量模块通过可调节夹具绑定在运动器械上; 另 外的运动测量模块绑定在人体上, 并且在所述人体上的绑定位置根据不同的测量模式重 新分布。
3、 根据权利要求 2所述的多节点运动测量与分析系统, 其特征在于, 其中一个运动 测量模块向另外的运动测量模块发送时间同步指令。
4、 根据权利要求 2所述的多节点运动测量与分析系统, 其特征在于, 所述的接收器 单元向每个运动测量模块发送时间同步指令。
5、 根据权利要求 3或 4所述的多节点运动测量与分析系统, 其特征在于, 所述的接 收器单元根据实时收到的各个运动测量模块的数据确定人体各个部位与运动器械的运动 时序。
6、 根据权利要求 5所述的多节点运动测量与分析系统, 其特征在于, 所述的人体各 个部位与运动器械的运动时序包括身体各个部位与运动器械的加速度在时间轴上达到峰 值的先后顺序, 达到峰值的时间间隙的大小, 加速度峰值的大小; 身体各部位与运动器 械的速度在时间轴上达到峰值的先后顺序, 达到峰值的时间间隙的大小, 速度峰值的大 小; 身体各部位与运动器械的角度在时间轴上达到峰值的先后顺序, 达到峰值的时间间 隙的大小, 角度峰值的大小。
7、 根据权利要求 1所述的多节点运动测量与分析系统, 其特征在于, 所述的接收器 单元还用于将预先设定的参考运动信息中的运动轨迹以 3D图形显示, 并把运动信息中 的运动轨迹以 3D图形显示。
8、 根据权利要求 1所述的多节点运动测量与分析系统, 其特征在于, 所述运动器械 上设置虚拟激光器, 用于直观显示所述运动器械的运动轨迹。
9、 根据权利要求 2所述的多节点运动测量与分析系统, 其特征在于, 绑定在所述人 体上的运动测量模块的数量根据不同的测量模式进行升级。
10、 根据权利要求 1所述的多节点运动测量与分析系统, 其特征在于, 所述的传感 器模块包括:
三轴 MEMS微加速度计, 用于测量所述运动测量模块的加速度;
三轴 MEMS微陀螺仪, 用于测量所述运动测量模块的角速度。
11、 根据权利要求 10所述的多节点运动测量与分析系统, 其特征在于, 所述的传感 器模块包括三轴 MEMS微磁力计, 用于测量所述运动测量模块的磁力。
12、 根据权利要求 11所述的多节点运动测量与分析系统, 其特征在于, 所述的第一 微处理器模块具体用于: 根据所述三轴 MEMS微加速度计测量的重力加速度向量及所述 三轴 MEMS磁力计测量的磁力向量计算生成所述运动测量模块的静态三维姿态角度; 根 据所述三轴 MEMS微陀螺仪测量的角速度计算生成所述运动测量模块的动态三维姿态角 度; 根据所述的静态三维姿态角度对所述的动态三维姿态角度进行修正, 得到所述的运 动测量模块的方位信息。
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