CN111265841A - Swimming lap number determining method, device, equipment and storage medium - Google Patents

Swimming lap number determining method, device, equipment and storage medium Download PDF

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Publication number
CN111265841A
CN111265841A CN202010080395.6A CN202010080395A CN111265841A CN 111265841 A CN111265841 A CN 111265841A CN 202010080395 A CN202010080395 A CN 202010080395A CN 111265841 A CN111265841 A CN 111265841A
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swimming
user
determining
lap
estimated
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CN111265841B (en
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姚丽峰
张庆学
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Beijing Calorie Information Technology Co ltd
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Beijing Calorie Information Technology Co ltd
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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
    • 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
    • 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
    • A63B2071/0625—Emitting sound, noise or music
    • A63B2071/063—Spoken or verbal instructions
    • 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
    • A63B2071/065—Visualisation of specific exercise parameters
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2220/00—Measuring of physical parameters relating to sporting activity
    • A63B2220/17—Counting, e.g. counting periodical movements, revolutions or cycles, or including further data processing to determine distances or speed
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2220/00—Measuring of physical parameters relating to sporting activity
    • A63B2220/40—Acceleration
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2220/00—Measuring of physical parameters relating to sporting activity
    • A63B2220/62—Time or time measurement used for time reference, time stamp, master time or clock signal
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2220/00—Measuring of physical parameters relating to sporting activity
    • A63B2220/80—Special sensors, transducers or devices therefor
    • A63B2220/803—Motion sensors
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2244/00—Sports without balls
    • A63B2244/20—Swimming

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  • Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Multimedia (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

The invention discloses a swimming lap number determining method, a swimming lap number determining device, swimming lap number determining equipment and a swimming lap number determining storage medium. The method comprises the following steps: acquiring swimming action data of a user in real time; determining the stroke times and/or the swimming duration of the user according to the swimming action data; the estimated swimming lap number of the current lap is determined according to the stroke times and/or the swimming duration, and the estimated swimming lap number is displayed.

Description

Swimming lap number determining method, device, equipment and storage medium
Technical Field
The embodiment of the invention relates to the technical field of wearability, in particular to a swimming lap number determining method, a swimming lap number determining device, swimming lap number determining equipment and a swimming lap number storing medium.
Background
With the popularity of the intelligent wrist-worn device, the human motion recognition technology based on the intelligent wrist-worn device plays an increasingly important role in life, and better research progress is achieved in various fields such as intelligent monitoring and medical care.
Swimming is a sport form suitable for all people, and can enhance the cardiac muscle function, enhance the resistance, build the body and strengthen the lung function after frequent swimming. The monitoring of swimming movements also becomes a hotspot of intelligent wearable equipment.
At present, a plurality of swimming bracelets pay more attention to drowning reminding and server communication, and the number of swimming turns cannot be automatically determined.
Disclosure of Invention
The embodiment of the invention provides a swimming lap number determining method, a swimming lap number determining device, equipment and a storage medium, so that a user can observe current swimming lap number information in real time without waiting when the user swims to a swimming pool.
In a first aspect, an embodiment of the present invention provides a swimming lap number determining method, including:
acquiring swimming action data of a user in real time;
determining the stroke times and/or the swimming duration of the user according to the swimming action data;
and determining the estimated swimming lap number of the current lap according to the stroke times and/or the swimming duration, and displaying the estimated swimming lap number.
Further, the method also comprises the following steps:
determining turn state information of the user according to the swimming action data;
determining actual number of swim laps of the user based on the turn status information;
and correcting the estimated swimming lap number according to the actual swimming lap number, and displaying the corrected estimated swimming lap number.
Further, determining the estimated number of swimming laps of the current lap according to the stroke number and the swimming duration comprises:
when the stroke number is greater than or equal to a number threshold and/or the swimming duration is greater than or equal to a duration threshold, determining the estimated swimming number of turns of the current turn according to the stroke number and/or the swimming duration, wherein the number threshold is smaller than the stroke number used by the user to finish the current turn, and the duration threshold is smaller than the one-way duration used by the user to finish the current turn.
Further, the step of acquiring swimming action data of the user in real time comprises:
and acquiring swimming action data of the user in real time based on the motion sensor.
Further, the motion sensor includes; at least one acceleration sensor, and a rotation sensor and/or a magnetometer.
Further, determining the turn state information of the user according to the swimming action data comprises:
and determining the turning state information of the user according to at least one of the track information, the magnetic force value and the direction information.
Further, determining the turn state information of the user according to the swimming action data comprises:
determining a current state of the user according to the swimming action data;
after the current state of the user is determined to be the turning state, verifying the turning state of the user according to at least one of the change trends of the track information or the magnetic force value before the user is in the turning state and after the user is in the turning state, the mean value of the track information or the magnetic force value before the user is in the turning state and after the user is in the turning state, and the distribution states of the track information or the positive and negative values of the magnetic force value before the user is in the turning state and after the user is in the turning state;
and determining the turning state of the user according to the verification result.
In a second aspect, embodiments of the present invention also provide a swimming lap number determining device, including:
the acquisition module is used for acquiring swimming action data of a user in real time;
the first determining module is used for determining the stroke times and/or the swimming duration of the user according to the swimming action data;
and the second determining module is used for determining the estimated swimming lap number of the current lap according to the stroke times and/or the swimming duration and displaying the estimated swimming lap number.
In a third aspect, embodiments of the present invention further provide an apparatus, including a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the swim lap determination method according to any one of the embodiments of the present invention when executing the program.
In a fourth aspect, embodiments of the present invention further provide a computer-readable storage medium, on which a computer program is stored, which when executed by a processor, implements a swim lap determination method according to any of the embodiments of the present invention.
The embodiment of the invention obtains the swimming action data of the user in real time; determining the stroke times and/or the swimming duration of the user according to the swimming action data; and determining the estimated swimming lap number of the current lap according to the stroke times and/or the swimming duration, and displaying the estimated swimming lap number, so that the user can observe the information of the current swimming lap number in real time without waiting.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a flow chart of a swimming lap number determination method according to a first embodiment of the present invention;
FIG. 2A is a flow chart of a number of swim laps determination method in accordance with a second embodiment of the present invention;
FIG. 2B is a flow chart of an algorithm for automatically detecting the number of turns in swimming according to a second embodiment of the present invention;
FIG. 3 is a schematic view showing the construction of a swim lap number determining apparatus according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of an apparatus in the fourth embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
Example one
Fig. 1 is a flowchart of a swimming lap number determining method according to an embodiment of the present invention, which is applicable to the case of determining swimming lap numbers, and the method can be executed by a swimming lap number determining apparatus according to an embodiment of the present invention, and the apparatus can be implemented by software and/or hardware, as shown in fig. 1, the method specifically includes the following steps:
and S110, acquiring swimming motion data of the user in real time.
The swimming action data may be data acquired by a six-axis sensor when the user swims, data acquired by a three-axis accelerometer and a three-axis gyroscope when the user swims, data acquired by a three-axis accelerometer and a three-axis magnetometer when the user swims, or data acquired by a nine-axis sensor when the user swims, which is not limited in this embodiment of the present invention.
The swimming motion data may be characteristic data such as stroke cycle, frequency, motion amplitude, and the like, or may be a three-axis trajectory, which is not limited in this embodiment of the present invention.
Specifically, the swimming action data of the user is obtained in real time, for example, triaxial acceleration data is obtained through a triaxial accelerometer, and triaxial direction data is obtained through a triaxial gyroscope.
And S120, determining the stroke times and/or the swimming time length of the user according to the swimming action data.
The swimming exercise is regular periodic exercise performed by the arms, and the method for determining the water stroke times of the user according to the swimming action data can be used for calculating the water stroke period and counting the water stroke times by methods of preprocessing, peak value extraction and the like, intercepting the characteristics of the water stroke period, frequency, action amplitude and the like, and identifying the current swimming posture by a machine learning model method. Wherein, the preprocessing method includes but is not limited to mean filtering, median filtering, low-pass filtering, sliding window smoothing, baseline removal, etc.; peak extraction methods include, but are not limited to, single peak extraction, peak-to-valley value pairing, continuous peak comparison, and the like; and identifying the swimming gestures by using a machine learning model method, wherein the used machine learning model comprises but is not limited to a decision tree model, a neural network model, a linear discrimination model, a random forest, dynamic time warping and the like.
The method for determining the swimming duration may be to analyze the swimming posture of the user first, then determine the swimming duration according to the analysis result and the timer, or determine the swimming duration directly through the timer, which is not limited in the embodiment of the present invention.
Specifically, a three-axis track is calculated through data collected by a three-axis accelerometer and a three-axis gyroscope, the three-axis track is used for judging turn and swimming turns, the water stroke times and the swimming posture are calculated through the data collected by the three-axis accelerometer and the three-axis gyroscope, and the swimming duration is obtained through a timer.
S130, determining the estimated swimming lap number of the current lap according to the stroke times and/or the swimming duration, and displaying the estimated swimming lap number.
The mode of determining the estimated swimming lap number of the current lap according to the stroke times and/or the swimming duration can be to compare the stroke times with a stroke time threshold, and if the stroke times are greater than the stroke time threshold and the swimming duration is greater than the swimming duration threshold, determining that the estimated swimming lap number of the current lap is the currently displayed swimming lap number plus one; the estimated number of swimming turns of the current turn may be determined to be the currently displayed number of swimming turns plus one if the number of water strokes is greater than the threshold of the number of water strokes, or the estimated number of swimming turns of the current turn may be determined to be the currently displayed number of swimming turns plus one if the swimming duration is greater than the threshold of the swimming duration, which is not limited in the embodiment of the present invention.
The swimming duration threshold and the stroke time threshold may be set according to prior data and swimming pool length information, or may be obtained by performing statistics according to the first several circles of current swimming information, which is not limited in this embodiment of the present invention.
Specifically, when the number of strokes is greater than the stroke number threshold and/or the swimming duration is greater than the swimming duration threshold, the number of turns of a current circle can be predicted, the flag is set to 1, and there are various setting methods of the stroke number threshold and the swimming duration threshold, for example, the setting can be performed according to prior data and swimming pool length information, and the acquisition of the prior data includes, but is not limited to, data collected manually during algorithm development, and the like; the statistics can also be carried out according to the information of the first circles of the current swimming, namely the information of the first circles of the same swimming posture, such as the stroke times, the swimming duration and the like, is used as a threshold value for predicting the number of circles of the current circle according to a certain proportion. In the case where the user does not have any historical data, it is preferable to use a priori data and pool length information for thresholding. And (3) the logic of the estimated turn number is that when the turning motion is not started, the turn number information of the current turn is counted preferentially, and the corresponding triaxial track state or the magnetic force value or the direction information of the triaxial magnetometer at the current moment is recorded.
The mode for displaying the estimated swimming lap number can be to display the estimated swimming lap number on a display screen of the wearable device, and can also be to play the estimated swimming lap number in a voice mode.
Optionally, determining the estimated number of swimming laps of the current lap according to the stroke number and/or the swimming duration comprises:
when the stroke number is greater than or equal to a number threshold and/or the swimming duration is greater than or equal to a duration threshold, determining the estimated swimming number of turns of the current turn according to the stroke number and/or the swimming duration, wherein the number threshold is smaller than the stroke number used by the user to finish the current turn, and the duration threshold is smaller than the one-way duration used by the user to finish the current turn.
The number threshold and the duration threshold may also be related to a swimming style of the user, and the swimming style may include freestyle swimming, breaststroke, and the like, which is not limited in this embodiment of the present invention.
Specifically, since the lap information of the current lap is preferentially counted when the user does not start the turn-around action, the number of strokes and/or the swimming duration need to be limited, for example, when the number of strokes is greater than or equal to the threshold of times and/or the swimming duration is greater than or equal to the threshold of duration, it may be determined that the estimated swimming lap of the current lap is the currently displayed swimming lap plus one.
In a specific example, if the current stroke number is 10, the swimming duration is 5 minutes, the preset stroke number threshold is 8, and the swimming duration is 3 minutes, the current stroke number is greater than the stroke number threshold, the swimming duration is greater than the swimming duration threshold, and if the currently displayed number of swimming cycles is 3 cycles, the number of estimated swimming cycles is 4 cycles, and 4 cycles are displayed.
Optionally, the obtaining swimming action data of the user in real time includes:
and acquiring swimming action data of the user in real time based on the motion sensor.
The motion sensor may be a six-axis sensor or a nine-axis sensor, which is not limited in this embodiment of the present invention.
Optionally, the motion sensor includes: at least one acceleration sensor, and a rotation sensor and/or a magnetometer.
The rotation sensor may be a gyroscope or other rotation sensors, which is not limited in this embodiment of the present invention.
The magnetometer may be another magnetic sensor, which is not limited in this embodiment of the present invention.
Specifically, the motion sensor may be a three-axis accelerometer and a three-axis gyroscope or a three-axis magnetometer, may also be an acceleration sensor and a rotation sensor, or may be an acceleration sensor and a magnetometer, which is not limited in comparison in the embodiment of the present invention.
Specifically, the six-axis sensor may be a three-axis accelerometer and a three-axis gyroscope, or a three-axis accelerometer and a three-axis magnetometer. If the six-axis sensor is a combination of a three-axis accelerometer and a three-axis gyroscope, a three-axis track needs to be calculated through three-axis acceleration and three-axis gyroscope data, the three-axis track is used for turning and swimming cycle number judgment, and the three-axis acceleration and the three-axis gyroscope data are used for calculating stroke times and swimming postures and assisting in cycle number judgment; if the six-axis sensor is the combination of the three-axis accelerometer and the three-axis magnetometer, the three-axis magnetometer is used for judging the turn-around and the swimming cycle number, and the three-axis acceleration data is used for calculating the stroke frequency and the swimming posture and assisting the judgment of the swimming cycle number.
It should be noted that if the number of swimming turns can be displayed on the bracelet or the smart watch after the turn-around action is completed, a certain time delay exists, the embodiment of the invention can calculate swimming information of each turn preferentially when the turn-around action is not started yet, detect state change when the turn-around action is started, confirm and clear the state and the like after the turn-around action is completed, so that real-time display of the number-of-turns information is achieved, and the experience of a user on the bracelet or the smart watch is improved. After data of six-axis sensors (a three-axis accelerometer and a three-axis gyroscope or the three-axis accelerometer and the three-axis magnetometer) are collected, preprocessing, peak detection, periodic detection, swimming stroke identification and the like are carried out on the data of the three-axis acceleration or the three-axis acceleration and the data of the three-axis gyroscope, corresponding threshold values are selected according to the number of times of water stroke and real-time swimming stroke of the current circle, the number of turns of the current circle is predicted, state comparison and number of turns confirmation are respectively carried out after the turning action starts and ends, and real-time display of the number of turns is guaranteed. The cut-off frequency of the filtering module can be dynamically adjusted in the algorithm according to swimming habits (such as the speed of paddling) of different users, so that the filtered data is smoother. Meanwhile, the threshold setting can be dynamically adjusted according to the personal action habits of the user, and more state information is considered when comparing the states before and after turning, for example, the magnetic force value and the direction information of the three-axis track or the three-axis magnetometer are not only relied on, but also whether the change curves before and after turning are symmetrical or not can be compared. In addition, if the three-axis track or the three-axis magnetic force value curve before and after turning has large jitter, the algorithm structure needs to be further optimized. Through six sensor data automatic recording user's swimming number of turns and distance information, guarantee the real-time of height simultaneously, remove the trouble of user's own record from, can let the user be absorbed in the standard and the persistence exercise of swimming action more.
According to the technical scheme of the embodiment, the swimming action data of the user is acquired in real time; determining the stroke times and/or the swimming duration of the user according to the swimming action data; and determining the estimated swimming lap number of the current lap according to the stroke times and/or the swimming duration, and displaying the estimated swimming lap number, so that the user can observe the information of the current swimming lap number in real time without waiting.
Example two
Fig. 2A is a flowchart of a swimming lap number determining method in a second embodiment of the present invention, which is optimized based on the above embodiment, and in this embodiment, the method further includes: determining turn state information of the user according to the swimming action data; determining actual number of swim laps of the user based on the turn status information; and correcting the estimated swimming lap number according to the actual swimming lap number, and displaying the corrected estimated swimming lap number.
As shown in fig. 2A, the method of this embodiment specifically includes the following steps:
and S210, acquiring swimming motion data of the user in real time.
And S220, determining the stroke times and/or the swimming duration of the user according to the swimming action data.
And S230, determining the estimated swimming lap number of the current lap according to the stroke times and/or the swimming duration, and displaying the estimated swimming lap number.
And S240, determining the turning state information of the user according to the swimming action data.
The user turning state information comprises that the user is in a turning state and the user is in a non-turning state.
Specifically, the determination of the turn state information of the user according to the swimming motion data may be the determination of the turn state information according to a three-axis trajectory, for example, a three-axis trajectory may be calculated in advance according to the swimming motion data, and then the turn state information may be determined according to the three-axis trajectory.
Specifically, the turn-around judgment is mainly used for detecting actions such as turn-around, swimming pause and the like, and also comprises detection of actions such as suspected turn-around, swimming pause and the like, the detection method comprises but is not limited to interruption of continuous actions, increase of action amplitude, periodic change and the like, and if the turn-around state is determined, the flag is set to be 2.
And S250, determining the actual swimming lap number of the user based on the turn-around state information.
The number of actual swimming laps is determined according to the turn state information, for example, the number of actual swimming laps may be determined according to the swimming motion data, and the data before and after the suspected turn state is compared to determine whether the suspected turn state is a real turn state, and if the suspected turn state is the real turn state, the number of actual swimming laps of the user is determined according to the turn state information.
Specifically, the actual number of turns of swimming of the user is determined based on the turn state information, for example, the user may continue swimming after turning or swimming is suspended, and after the paddling is stabilized, the actual number of turns of swimming is compared with the state information before turning, which is predicted and recorded according to the track state or magnetic force value or direction information in the current stable paddling state, and the comparison method includes, but is not limited to, whether the change trends of the track or magnetic force value before and after turning are consistent, whether the average value of the track or magnetic force value before and after turning is consistent in a short time, whether the positive and negative value distribution conditions of the track or magnetic force value before and after turning are consistent in the vicinity of 0 value. If any parameter is inconsistent in the former and later comparisons, the turning motion is probably generated, and the state 1 is output, otherwise, the state 0 is output.
And S260, correcting the estimated swimming lap number according to the actual swimming lap number, and displaying the corrected estimated swimming lap number.
The number of actual swimming laps may be determined according to the turn state information, or may be further detected as a number of actual swimming laps after the determination according to the turn state information, which is not limited in the embodiment of the present invention.
The method for correcting the estimated swimming lap number according to the actual swimming lap number can be that if the actual swimming lap number is smaller than the estimated swimming lap number, the estimated swimming lap number is reduced by one; or if the actual number of turns of swimming is the same as the estimated number of turns of swimming, the estimated number of turns of swimming is not changed, and the embodiment of the invention does not limit the estimated number of turns of swimming.
The mode of showing the estimated swimming lap number after correction can be that the estimated swimming lap number after correction is displayed on a display screen of the intelligent wearable device, and can also be that the estimated swimming lap number displayed before is reserved.
The mode of displaying the estimated number of swimming turns after the modification can be deleting the number of swimming turns displayed on a screen of the wearable equipment before, and displaying the actual number of swimming turns of the user; the actual number of swimming laps can also be increased behind the number of swimming laps on the screen of the wearable device; or the number of swimming laps can be played by voice again, for example, if the number of swimming laps is estimated to be 2 laps by voice playing, after the actual number of swimming laps is determined to be 3 laps, the number of swimming laps is estimated to be 2 laps by voice playing: the estimated swimming lap number is just wrong and should be 3 laps, which is not limited by the embodiment of the invention.
Specifically, the actual number of swimming turns of the user is determined according to the turning state information, the estimated number of swimming turns is corrected according to the actual number of swimming turns, and the corrected estimated number of swimming turns is displayed. For example, after the turning or swimming is suspended, swimming is continued, and after the swimming is stabilized, the track state or the magnetic force value or the direction information in the current stable swimming state is compared with the state information before the turning, which is expected to be recorded according to the number of turns, wherein the comparison method includes but is not limited to whether the change trends of the track or the magnetic force value before and after the turning are consistent, whether the average values of the track or the magnetic force value before and after the turning are consistent in a short time, whether the distribution situations of positive and negative values of the track or the magnetic force value before and after the turning are consistent in the vicinity of 0 value, and. If any parameter is inconsistent in the former and later comparisons, the turning motion is probably generated, and the state 1 is output, otherwise, the state 0 is output. According to the output result, if the comparison parameters are obviously different before turning or before and after swimming pause, 1 is output, namely the detected state is the turning state, namely the estimated swimming lap number is calculated correctly; if the output result is 0, the swimming state before and after turning or swimming pause is considered to be relatively consistent, namely the detected state may be pause or other non-turning actions, the estimated swimming lap number is still reserved, and other estimated state variables are cleared until the next turning action is detected. If the last circle only detects the pause action and does not detect the turn-around action, the estimated swimming number of turns is reduced by one after the swimming is finished so as to obtain accurate information of the number of turns.
Optionally, determining the turn-around state information of the user according to the swimming action data includes:
and determining the turning state information of the user according to at least one of the track information, the magnetic force value and the direction.
The track information may be a three-axis track, and may also be acceleration data and direction data acquired when the user swims, which is not limited in the embodiment of the present invention.
Wherein the magnetic force value is obtained by a three-axis magnetometer.
Wherein the direction information is obtained by a three-axis gyroscope.
Specifically, the turning state information of the user is determined according to at least one of the trajectory information, the magnetic force value and the direction information, for example, the turning state information of the user may be determined according to the trajectory information and the magnetic force value if the user passes through a three-axis accelerometer and a three-axis magnetometer, the turning state information of the user may be determined according to the trajectory information and the direction information if the user passes through a three-axis accelerometer and a three-axis gyroscope, or the turning state information of the user may be determined only according to the trajectory information, the magnetic force value or the direction information.
Optionally, determining the turn-around state information of the user according to the swimming action data includes:
determining a current state of the user according to the swimming action data;
after the current state of the user is determined to be the turning state, verifying the turning state of the user according to at least one of the change trends of the track information or the magnetic force value before the user is in the turning state and after the user is in the turning state, the mean value of the track information or the magnetic force value before the user is in the turning state and after the user is in the turning state, and the distribution states of the track information or the positive and negative values of the magnetic force value before the user is in the turning state and after the user is in the turning state;
and determining the turning state of the user according to the verification result.
Specifically, swimming is continued after the turning state or swimming is suspended, and after the swimming is stabilized, comparison is performed with the state information before turning, which is recorded according to the estimated number of turns of swimming, according to at least one of the track information, the magnetic force value and the direction information in the current stable swimming state. If any parameter is inconsistent in the former and later comparisons, the turning motion is probably generated, and the state 1 is output, otherwise, the state 0 is output.
At present, most intelligent wearable products such as bracelet watches are provided with six-axis inertial sensors, including a three-axis accelerometer and a three-axis gyroscope, but the products supporting the swimming function are not many, and the number of turns parameter in the swimming function is very important, but most bracelet or intelligent watches are delayed in some degree when displaying the number of turns in real time, namely, the number of turns needs to be displayed after turning around the pool, and the number of turns has a certain hysteresis. The method may be applied to platforms or devices equipped with six-axis sensors or integrated sensors including six-axis sensors, such as bracelets or smart watches. The user only needs to wear bracelet or intelligent wrist-watch and begins swimming, can the number of turns that the automated inspection user swim and show in real time on the screen of bracelet or intelligent wrist-watch. When the user does not turn around, the number of the current swimming turns is preferably estimated, and when the user reaches the side of the pool, the user can know the number of the current swimming turns in real time without any delay; when the user continues to swim for the next circle, the estimated swimming number of circles of the previous circle is confirmed, if the detection requirement for turning is met, the estimated swimming number of circles is confirmed to be accurate, and the swimming number of circles of the next circle is detected continuously; otherwise, if the detection requirement of turning is not met, such as short stop in the swimming pool, the state is cleared, and the estimated swimming lap number is reserved until the next turning action. The method for detecting the number of the swimming laps has the advantages that a user can visit the pool without waiting, and can observe the current number information of the laps by himself in real time.
In a specific example, as shown in fig. 2B, the whole process starts from swimming of the user, data of the six-axis sensor is collected point by point, the data sequentially passes through each module of the algorithm, finally, the number of turns to the current trip is obtained, and after the user finishes swimming, the swimming posture result is recorded and uploaded. Wherein, the module 1 (stroke frequency and swimming stroke identification), the module 2 (swimming lap number estimation), the module 3 (turn judgment), the module 4 (front-back comparison) and the module 5 (lap number confirmation). The six-axis sensor may be a three-axis accelerometer and a three-axis gyroscope, or a three-axis accelerometer and a three-axis magnetometer. If the six-axis sensor is a combination of a three-axis accelerometer and a three-axis gyroscope, a three-axis track needs to be calculated through three-axis acceleration and three-axis gyroscope data, the three-axis track is used for turning and swimming cycle number judgment, and the three-axis acceleration and the three-axis gyroscope data are used for calculating stroke times and swimming postures and assisting swimming cycle number judgment; if the six-axis sensor is the combination of the three-axis accelerometer and the three-axis magnetometer, the three-axis magnetometer is used for judging the turn-around and the swimming cycle number, and the three-axis acceleration data is used for calculating the stroke frequency and the swimming posture and assisting the judgment of the swimming cycle number. If the six-axis sensor is two three-axis acceleration sensors, one group of three-axis acceleration data is used for judging turn and swimming turns, and the other group of three-axis acceleration data is used for calculating the stroke times and the swimming posture. The nine-axis sensor can be a combination of a three-axis accelerometer, a three-axis gyroscope and a three-axis magnetometer, so that a three-axis track calculated by three-axis acceleration and three-axis gyroscope data is needed, and the three-axis track and/or the three-axis magnetometer are/is used for judging the turn number and the swimming lap number; and the triaxial acceleration and the triaxial gyroscope data are used for calculating the stroke times and the swimming stroke and assisting the judgment of the number of swimming turns. The module 1 is used for paddling times and swimming stroke identification. The swimming exercise is that the arm carries out regular periodic exercise, the stroke cycle is calculated and the stroke times are counted by methods of preprocessing, peak value extraction and the like, the characteristics of the stroke cycle, the frequency, the action amplitude and the like are intercepted, and the current swimming posture is identified by a machine learning model method. Wherein, the preprocessing method includes but is not limited to mean filtering, median filtering, low-pass filtering, sliding window smoothing, baseline removal, etc.; peak extraction methods include, but are not limited to, single peak extraction, peak-to-valley value pairing, continuous peak comparison, and the like; and identifying the swimming gestures by using a machine learning model method, wherein the used machine learning model comprises but is not limited to a decision tree model, a neural network model, a linear discrimination model, a random forest, dynamic time warping and the like. And (3) module 2: and (5) estimating the number of swimming turns. When the number of times of swimming exceeds the threshold value of the number of times of swimming and/or the swimming duration exceeds the threshold value of the swimming duration, the number of swimming turns can be estimated, the mark is set to be 1, the threshold value is set by two methods, one method is set according to prior data and the length information of the swimming pool, and the prior data is acquired by the method including but not limited to data collected manually during algorithm development and the like; the other method is to carry out statistics according to the information of the first circles of the current swimming, namely, the information of the first circles of the same swimming stroke, such as the stroke times, the swimming duration and the like, is used as a threshold value for the estimated number of the swimming circles of the current circle according to a certain proportion. In the case where the user does not have any historical data, it is preferable to use a priori data and pool length information for thresholding. And (3) swimming lap number pre-estimation logic, namely, when the turning motion is not started, counting lap number information of the current lap number in a priority mode, and recording the three-axis track state corresponding to the current moment or the magnetic force value or direction information of the three-axis magnetometer. And a module 3: and (5) turning the body. The turn judgment is mainly used for detecting actions such as turn or swimming pause, and the like, and simultaneously comprises the detection of actions such as suspected turn or swimming pause, and the like, wherein the detection method comprises but is not limited to the interruption of continuous actions, the increase of action amplitude, the change of period and the like, and the mark is set to be 2. And (4) module: and comparing the two. And after the turning or swimming is suspended, continuing swimming, and after the paddling is stable, comparing the track information, the magnetic force value and/or the direction information in the current stable paddling state with the state information before the turning recorded by the module 1 (the estimated number of turns), wherein the comparison method comprises the steps of but not limited to whether the change trends of the tracks or the magnetic force values before and after the turning are consistent, whether the average values of the tracks or the magnetic force values before and after the turning are consistent in a short time, whether the positive and negative value distribution conditions of the tracks or the magnetic force values before and after the turning are consistent in the vicinity of 0 value and the like. If any parameter is inconsistent in the former and later comparisons, the turning motion is probably generated, and the state 1 is output, otherwise, the state 0 is output. And a module 5: and (5) confirming the number of swimming turns. According to the output result of the module 4, if the comparison parameters before and after turning or swimming pause are obviously different, namely 1 is output, namely the condition detected by the module 3 is confirmed to be turning, and the estimated turn number of the module 2 is calculated correctly; if the output of module 4 is 0, it is considered that the swimming status is relatively consistent before and after the turn or swimming pause, i.e. the status detected by module 3 may be pause or other non-turn actions, the expected number of turns of module 2 is still retained, but other expected status variables are cleared until the next turn is detected. If only pause motion is detected in the last circle and no turn motion is detected, the number of circles predicted by the module 2 is reduced by one after swimming is finished so as to obtain accurate swimming number information.
According to the technical scheme of the embodiment, the swimming action data of the user is acquired in real time; determining the stroke times and/or the swimming duration of the user according to the swimming action data; determining the estimated number of swimming turns of the current turn according to the stroke times and/or the swimming duration, displaying the estimated number of the swimming turns, and determining the turn state information of the user according to the swimming action data; determining actual number of swim laps of the user based on the turn status information; and correcting the estimated swimming lap number according to the actual swimming lap number, and displaying the corrected estimated swimming lap number. Can make the user need not to wait for, observe oneself in real time and cut to current swimming number of turns information to can revise after confirming actual swimming number of turns, for the user provides more real swimming number of turns, increase the accuracy that the number of turns of swimming confirms, promote user's use and experience.
EXAMPLE III
Fig. 3 is a schematic structural view of a swimming lap number determining device according to a third embodiment of the present invention. The present embodiment can be applied to the case of the determination of the number of swimming laps, and the device can be implemented in a software and/or hardware manner, and can be integrated in any equipment providing the function of determining the number of swimming laps, as shown in fig. 3, and the device for determining the number of swimming laps specifically comprises: an acquisition module 310, a first determination module 320, and a second determination module 330.
The obtaining module 310 is configured to obtain swimming motion data of a user in real time;
a first determining module 320, configured to determine the stroke times and/or the swimming duration of the user according to the swimming action data;
the second determining module 330 is configured to determine an estimated number of swimming laps of a current lap according to the stroke number and/or the swimming duration, and display the estimated number of swimming laps.
Optionally, the method further includes:
the third determining module is used for determining the turning state information of the user according to the swimming action data;
a fourth determination module for determining the actual number of swimming laps of the user based on the turn-around state information;
and the correction module is used for correcting the estimated swimming lap number according to the actual swimming lap number and displaying the corrected estimated swimming lap number.
Optionally, the second determining module is specifically configured to:
when the stroke number is greater than or equal to a number threshold and/or the swimming duration is greater than or equal to a duration threshold, determining the estimated swimming number of turns of the current turn according to the stroke number and/or the swimming duration, wherein the number threshold is smaller than the stroke number used by the user to finish the current turn, and the duration threshold is smaller than the one-way duration used by the user to finish the current turn.
Optionally, the obtaining module is specifically configured to:
and acquiring swimming action data of the user in real time based on the motion sensor.
Optionally, the motion sensor includes: at least one acceleration sensor, and a rotation sensor and/or a magnetometer.
Optionally, the third determining module is specifically configured to:
and determining the turning state information of the user according to at least one of the track information, the magnetic force value and the direction information.
Optionally, the third determining module is specifically configured to:
determining a current state of the user according to the swimming action data;
after the current state of the user is determined to be the turning state, verifying the turning state of the user according to at least one of the change trends of the track information or the magnetic force value before the user is in the turning state and after the user is in the turning state, the mean value of the track information or the magnetic force value before the user is in the turning state and after the user is in the turning state, and the distribution states of the track information or the positive and negative values of the magnetic force value before the user is in the turning state and after the user is in the turning state;
and determining the turning state of the user according to the verification result.
The product can execute the method provided by any embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method.
According to the technical scheme of the embodiment, the swimming action data of the user is acquired in real time; determining the stroke times and/or the swimming duration of the user according to the swimming action data; and determining the estimated swimming lap number of the current lap according to the stroke times and/or the swimming duration, and displaying the estimated swimming lap number, so that the user can observe the information of the current swimming lap number in real time without waiting.
Example four
Fig. 4 is a schematic structural diagram of an apparatus according to a fourth embodiment of the present invention. Fig. 4 illustrates a block diagram of an exemplary device 12 suitable for use in implementing embodiments of the present invention. The device 12 shown in fig. 4 is only an example and should not bring any limitation to the function and scope of use of the embodiments of the present invention.
As shown in FIG. 4, device 12 is in the form of a general purpose computing device. The components of device 12 may include, but are not limited to: one or more processors or processing units 16, a system memory 28, and a bus 18 that couples various system components including the system memory 28 and the processing unit 16.
Bus 18 represents one or more of any of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, and a processor or local bus using any of a variety of bus architectures. By way of example, such architectures include, but are not limited to, Industry Standard Architecture (ISA) bus, micro-channel architecture (MAC) bus, enhanced ISA bus, Video Electronics Standards Association (VESA) local bus, and Peripheral Component Interconnect (PCI) bus.
Device 12 typically includes a variety of computer system readable media. Such media may be any available media that is accessible by device 12 and includes both volatile and nonvolatile media, removable and non-removable media.
The system memory 28 may include computer system readable media in the form of volatile memory, such as Random Access Memory (RAM)30 and/or cache memory 32. Device 12 may further include other removable/non-removable, volatile/nonvolatile computer system storage media. By way of example only, storage system 34 may be used to read from and write to non-removable, nonvolatile magnetic media (not shown in FIG. 4, and commonly referred to as a "hard drive"). Although not shown in FIG. 4, a magnetic disk drive for reading from and writing to a removable, nonvolatile magnetic disk (e.g., a "floppy disk") and an optical disk drive for reading from or writing to a removable, nonvolatile optical disk (e.g., a CD-ROM, DVD-ROM, or other optical media) may be provided. In these cases, each drive may be connected to bus 18 by one or more data media interfaces. Memory 28 may include at least one program product having a set (e.g., at least one) of program modules that are configured to carry out the functions of embodiments of the invention.
A program/utility 40 having a set (at least one) of program modules 42 may be stored, for example, in memory 28, such program modules 42 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each of which examples or some combination thereof may comprise an implementation of a network environment. Program modules 42 generally carry out the functions and/or methodologies of the described embodiments of the invention.
Device 12 may also communicate with one or more external devices 14 (e.g., keyboard, pointing device, display 24, etc.), with one or more devices that enable a user to interact with device 12, and/or with any devices (e.g., network card, modem, etc.) that enable device 12 to communicate with one or more other computing devices. Such communication may be through an input/output (I/O) interface 22. In the device 12 of the present embodiment, the display 24 is not provided as a separate body but is embedded in the mirror surface, and when the display surface of the display 24 is not displayed, the display surface of the display 24 and the mirror surface are visually integrated. Also, the device 12 may communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the Internet) via the network adapter 20. As shown, the network adapter 20 communicates with the other modules of the device 12 via the bus 18. It should be understood that although not shown in the figures, other hardware and/or software modules may be used in conjunction with device 12, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, among others.
The processing unit 16 executes various functional applications and data processing by running a program stored in the system memory 28, for example, implementing a swim lap determination method provided by an embodiment of the present invention: acquiring swimming action data of a user in real time; determining the stroke times and/or the swimming duration of the user according to the swimming action data; and determining the estimated swimming lap number of the current lap according to the stroke times and/or the swimming duration, and displaying the estimated swimming lap number.
EXAMPLE five
An embodiment five of the present invention provides a computer-readable storage medium, on which a computer program is stored, which when executed by a processor, implements the swimming lap number determining method as provided in all inventive embodiments of the present application: acquiring swimming action data of a user in real time; determining the stroke times and/or the swimming duration of the user according to the swimming action data; and determining the estimated swimming lap number of the current lap according to the stroke times and/or the swimming duration, and displaying the estimated swimming lap number.
Any combination of one or more computer-readable media may be employed. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (10)

1. A swimming lap number determining method, comprising:
acquiring swimming action data of a user in real time;
determining the stroke times and/or the swimming duration of the user according to the swimming action data;
and determining the estimated swimming lap number of the current lap according to the stroke times and/or the swimming duration, and displaying the estimated swimming lap number.
2. The method of claim 1, further comprising:
determining turn state information of the user according to the swimming action data;
determining actual number of swim laps of the user based on the turn status information;
and correcting the estimated swimming lap number according to the actual swimming lap number, and displaying the corrected estimated swimming lap number.
3. The method of claim 1, wherein determining an estimated number of swimming laps for a current lap from the number of strokes and/or length of swimming time comprises:
when the stroke number is greater than or equal to a number threshold and/or the swimming duration is greater than or equal to a duration threshold, determining the estimated swimming number of turns of the current turn according to the stroke number and/or the swimming duration, wherein the number threshold is smaller than the stroke number used by the user to finish the current turn, and the duration threshold is smaller than the one-way duration used by the user to finish the current turn.
4. The method of claim 1, wherein obtaining swim motion data of the user in real-time comprises:
and acquiring swimming action data of the user in real time based on the motion sensor.
5. The method of claim 4, wherein the motion sensor comprises: at least one acceleration sensor, and a rotation sensor and/or a magnetometer.
6. The method of claim 2, wherein determining turn status information of the user from the swim motion data comprises:
and determining the turning state information of the user according to at least one of the track information, the magnetic force value and the direction information.
7. The method of claim 2, wherein determining turn status information of the user from the swim motion data comprises:
determining a current state of the user according to the swimming action data;
after the current state of the user is determined to be the turning state, verifying the turning state of the user according to at least one of the change trends of the track information or the magnetic force value before the user is in the turning state and after the user is in the turning state, the mean value of the track information or the magnetic force value before the user is in the turning state and after the user is in the turning state, and the distribution states of the track information or the positive and negative values of the magnetic force value before the user is in the turning state and after the user is in the turning state;
and determining the turning state of the user according to the verification result.
8. A swimming lap number determining device, comprising:
the acquisition module is used for acquiring swimming action data of a user in real time;
the first determining module is used for determining the stroke times and/or the swimming duration of the user according to the swimming action data;
and the second determining module is used for determining the estimated swimming lap number of the current lap according to the stroke times and/or the swimming duration and displaying the estimated swimming lap number.
9. An apparatus comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the method of any one of claims 1-7 when executing the program.
10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method according to any one of claims 1-7.
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