CN107747950A - Step recording method and device - Google Patents
Step recording method and device Download PDFInfo
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- CN107747950A CN107747950A CN201710893671.9A CN201710893671A CN107747950A CN 107747950 A CN107747950 A CN 107747950A CN 201710893671 A CN201710893671 A CN 201710893671A CN 107747950 A CN107747950 A CN 107747950A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C22/00—Measuring distance traversed on the ground by vehicles, persons, animals or other moving solid bodies, e.g. using odometers, using pedometers
- G01C22/006—Pedometers
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Abstract
The embodiment of the present invention, which provides a kind of step recording method and device, methods described, to be included：Obtain the 3-axis acceleration data for the equipment that user carries；Periodicity matching is carried out to the acceleration information of each reference axis respectively, remembers step axle using periodically maximum reference axis as target；The acceleration information according to corresponding to the target remembers step axle, determine the step number of the user.The application, due to considering the periodicity during user movement, using periodically maximum reference axis as target note step axle, the acceleration information of step axle, the accurate step number for obtaining user are remembered based on the target, and then realize the accurate note step to user.
Description
Technical field
The present embodiments relate to terminal technology, more particularly to a kind of step recording method and device.
Background technology
The wearable devices such as existing Intelligent bracelet, intelligent watch generally have note step function that, integrated using product
Motion sensor perceive the motion of human body, and then realize note step, and according to the step number of user, estimate user travel distance,
Consume the parameters such as calorie.
Current wearable device, the 3-axis acceleration data of equipment, i.e. X-coordinate direction of principal axis when generally obtaining user movement
Acceleration, the acceleration of Y-coordinate direction of principal axis and the acceleration of Z coordinate direction of principal axis.And obtained from the acceleration information of three axles
The reference axis of body amplitude maximum is rounded as coordinates of targets axle, such as X-coordinate axle.Then, the acceleration of X-coordinate direction of principal axis is drawn
Oscillogram, note step is realized by the number of trough or crest in several Acceleration pulse figures, wherein, a crest represents a step.
But because the walking habits of user are different, or when user is careful, the reference axis of amplitude maximum is made can not be accurate
Reflect the actual motion state of user, in turn result in the problem of note step is inaccurate.
The content of the invention
The embodiment of the present invention provides a kind of step recording method and device, and accurate note step can not be carried out to user to solve prior art
The problem of.
In a first aspect, the embodiment of the present invention provides a kind of appraisal procedure of step recording method, including：
Obtain the 3-axis acceleration data for the equipment that user carries；
Periodicity matching is carried out to the acceleration information of each reference axis respectively, using periodically maximum reference axis as mesh
Mark step axle；
The acceleration information according to corresponding to the target remembers step axle, determine the step number of the user.
It is described that the acceleration information of each reference axis is carried out respectively in a kind of possible implementation of first aspect
Before periodically matching, methods described also includes：
The 3-axis acceleration data are filtered using wave filter group, wherein, the wave filter group includes inhomogeneity
The wave filter of type, cut-off frequency corresponding to different types of wave filter are different.
It is described that the acceleration information of each reference axis is entered respectively in the alternatively possible implementation of first aspect
Row periodically matches, and remembers step axle using periodically maximum reference axis as target, specifically includes：
Periodicity matching is carried out to the filtered acceleration information of each reference axis respectively, by periodically maximum reference axis
Remember step axle as target.
It is described respectively to the filtered acceleration of each reference axis in the alternatively possible implementation of first aspect
Data carry out periodicity matching, specifically include：
The turning point in filtered acceleration information corresponding to each reference axis is obtained respectively；
For each turning point in each reference axis, the first width between the turning point and the latter turning point is obtained
Value difference and the very first time are poor, and obtain the first turning point corresponding to the turning point in adjacent periods, and obtain described first
The second difference in magnitude and the second time difference between turning point and the latter turning point；
Judge whether the first amplitude poor equal with second difference in magnitude, and judge the very first time it is poor with it is described
Whether the second time difference is equal；
If, it is determined that periodically the match is successful for the turning point.
It is poor with the second difference in magnitude phase in the first amplitude in the alternatively possible implementation of first aspect
Deng, and the very first time it is poor it is equal with second time difference after, methods described also includes：
Judge the first amplitude difference whether in default amplitude section, and judge the very first time difference whether position
In in predetermined period section；
If, it is determined that periodically the match is successful for the turning point.
It is described to remember periodically maximum reference axis as target in the alternatively possible implementation of first aspect
Axle is walked, is specifically included：
The number of periodicity the first turning point that the match is successful in each turning point corresponding to each reference axis is obtained, by maximum
Reference axis corresponding to the number of first turning point remembers step axle as target.
In the alternatively possible implementation of first aspect, the acceleration according to corresponding to the target remembers step axle
Data, the step number of the user is determined, is specifically included：
Each turning point in acceleration information corresponding to step axle is remembered to the target, judges the turnover of current periodic matching
Whether the 3rd time difference between the turning point that point matches with previous periodicity is more than or equal to first threshold；
If so, the periodic quantity of the corresponding acceleration information of step axle is then remembered according to the 3rd time difference and the target, really
The step number of the fixed user；
If it is not, then remembering that step axle corresponds to the number of the turning point of acceleration information according to the target, determine the user's
Step number.
In the alternatively possible implementation of first aspect, methods described also includes:
The maximum and minimum value of each acceleration information amplitude, determine the acceleration according to corresponding to the target remembers step axle
First energy of degrees of data；
The forms of motion of the user is determined according to first energy.
In the alternatively possible implementation of first aspect, when determining that the user has according to first energy
During at least two forms of motion, methods described also includes：
The difference in magnitude of two adjacent acceleration informations is absolute in the acceleration information according to corresponding to the target remembers step axle
It is worth sum, determines the second energy of the acceleration information；
The forms of motion of the user is determined according to first energy and second energy.
It is described to determine the user's according to first energy in the alternatively possible implementation of first aspect
Forms of motion, specifically include：
Each target first interval intersected with first energy is obtained, wherein, first corresponding to different forms of motion
Section is different；
If the target first interval is one, it is determined that the forms of motion of the user is the target first interval pair
The forms of motion answered.
It is described if the target first interval is at least two in the alternatively possible implementation of first aspect
The forms of motion of the user is determined according to first energy and second energy, is specifically included：
Obtain the first operation form set corresponding to each target first interval；
Each target second interval intersected with second energy is obtained, and is obtained second corresponding to each target second interval
Operation form set, second interval corresponding to different forms of motion are different；
Identical in described first operation form set and the second operation form set is run into form as described in
The forms of motion of user.
Second aspect, the embodiment of the present invention provide a kind of note step device, including：
Acquisition module, the 3-axis acceleration data of the equipment for obtaining user's carrying；
Periodicity matching module, for carrying out periodicity matching to the acceleration information of each reference axis respectively, by the cycle
Property maximum reference axis walk axle as target note；
Determining module, for acceleration information corresponding to remembering step axle according to the target, determine the step number of the user.
In a kind of possible implementation of second aspect, described device also includes：
Filtering module, for being filtered using wave filter group to the 3-axis acceleration data, wherein, the wave filter
Group includes different types of wave filter, and cut-off frequency corresponding to different types of wave filter is different.
The periodicity matching module, specifically for carrying out the cycle to the filtered acceleration information of each reference axis respectively
Property matching, walk axle using periodically maximum reference axis as target note.
In the alternatively possible implementation of second aspect, described device also includes judge module：
The acquisition module, it is additionally operable to obtain the turnover in filtered acceleration information corresponding to each reference axis respectively
Point, for each turning point in each reference axis, and obtain the first amplitude between the turning point and the latter turning point
Difference and the very first time are poor, and obtain the first turning point corresponding to the turning point in adjacent periods, and obtain described first turn
The second difference in magnitude and the second time difference between break and the latter turning point.
The judge module, for judging whether the first amplitude is poor equal with second difference in magnitude, and judge institute
It is poor whether equal with second time difference to state the very first time.
The determining module, for judging that the first amplitude is poor with the second difference in magnitude phase in the judge module 50
Deng, and judge that the very first time is poor when with second time difference being equal, determining the turning point, periodically the match is successful.
In the alternatively possible implementation of second aspect, the judge module, it is additionally operable to judging described first
Difference in magnitude is equal with second difference in magnitude, and the very first time it is poor it is equal with second time difference after, described in judgement
Whether first amplitude difference is in default amplitude section, and judges whether the very first time difference is located at predetermined period section
It is interior.
The determining module, for judging the first amplitude difference in default amplitude section in the judge module,
And when judging that the very first time difference is in predetermined period section, determining the turning point, periodically the match is successful.
In the alternatively possible implementation of second aspect, the acquisition module, it is additionally operable to obtain each reference axis
The number of periodicity the first turning point that the match is successful in corresponding each turning point.
The determining module, it is additionally operable to reference axis corresponding to the number of maximum first turning point remembering step axle as target.
In the alternatively possible implementation of second aspect, the judge module, it is additionally operable to remember step to the target
Each turning point in acceleration information corresponding to axle, judge that the turning point of current periodic matching matches with previous periodicity
Whether the 3rd time difference between turning point is more than or equal to first threshold.
The determining module, it is additionally operable to judge the turning point of current periodic matching and previous week in the judge module
The 3rd time difference between the turning point of phase property matching is when being more than or equal to first threshold, according to the 3rd time difference with it is described
The periodic quantity of acceleration information corresponding to target note step axle, determine the step number of the user.
The determining module, it is additionally operable to judge the turning point of current periodic matching and previous week in the judge module
When the 3rd time difference between the turning point of phase property matching is less than first threshold, remember that step axle correspondingly accelerates the number of degrees according to the target
According to turning point number, determine the step number of the user.
In the alternatively possible implementation of second aspect, the determining module, it is additionally operable to be remembered according to the target
The maximum and minimum value of each acceleration information amplitude corresponding to axle are walked, determines the first energy of the acceleration information；And root
The forms of motion of the user is determined according to first energy.
In the alternatively possible implementation of second aspect, the determining module, it is additionally operable to according to described first
When energy determines that the user has at least two forms of motion, phase in the acceleration information according to corresponding to the target remembers step axle
The absolute value sum of the difference in magnitude of two adjacent acceleration informations, determine the second energy of the acceleration information；And according to described
First energy and second energy determine the forms of motion of the user.
In the alternatively possible implementation of second aspect, the acquisition module, it is additionally operable to obtain and described first
The intersecting each target first interval of energy, wherein, first interval corresponding to different forms of motion is different.
The determining module, for being one in the target first interval, the forms of motion for determining the user is institute
State forms of motion corresponding to target first interval.
In the alternatively possible implementation of second aspect, the acquisition module, it is additionally operable in the target first
When section is at least two, the first operation form set corresponding to each target first interval is obtained；And obtain and second energy
The intersecting each target second interval of amount, and obtain the second operation form set, different motions corresponding to each target second interval
Second interval corresponding to form is different.
The determining module, for the described first operation form set and described second to be run into identical in form set
Forms of motion of the operation form as the user.
Step recording method and device provided in an embodiment of the present invention, the 3-axis acceleration number of the equipment carried by obtaining user
According to respectively to the acceleration information progress periodicity matching of each reference axis, using periodically maximum reference axis as target note
Axle, and the acceleration information according to corresponding to the target remembers step axle are walked, determines the step number of the user.I.e. the present embodiment is due to examining
The periodicity during user movement is considered, has remembered step axle using periodically maximum reference axis as target, remembered based on the target and walked
The acceleration information of axle, the accurate step number for obtaining user, and then realize and the accurate note of user is walked.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are this hairs
Some bright embodiments, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the flow chart for the step recording method that the embodiment of the present invention one provides；
Fig. 2 is the Acceleration pulse figure of a certain coordinate axle acceleration data；
Fig. 3 is the flow chart for the step recording method that the embodiment of the present invention two provides；
Fig. 4 is the flow chart for the step recording method that the embodiment of the present invention three provides；
Fig. 5 is the signaling process figure of the step recording method described in Fig. 4；
Fig. 6 is the flow chart for the step recording method that the embodiment of the present invention four provides；
Fig. 7 is Acceleration pulse figure corresponding to different motion form；
Fig. 8 is the structure chart for the note step device that the embodiment of the present invention one provides；
Fig. 9 is the structure chart for the note step device that the embodiment of the present invention two provides；
Figure 10 is the structure chart for the note step device that the embodiment of the present invention three provides.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
The method of the embodiment of the present invention, it is contemplated that user has periodically, therefore, by 3-axis acceleration data in motion
The maximum reference axis of middle periodicity remembers step axle as target, and remembers that the acceleration information of step axle carries out note step based on the target, enters
And solve prior art and remember that step axle carries out note step using the reference axis of amplitude maximum as target, cause note step is inaccurate to ask
Topic.
Technical scheme is described in detail with specifically embodiment below.These specific implementations below
Example can be combined with each other, and may be repeated no more for same or analogous concept or process in some embodiments.
Fig. 1 is the flow chart for the step recording method that the embodiment of the present invention one provides.The executive agent of the present embodiment is with step
The note step device of number computing capability, the note step device can be a certain devices in the equipment that user carries, or single
Only device.The present embodiment refers to note step device acceleration information according to corresponding to target remembers step axle, determines the user
Step number detailed process.As shown in figure 1, the method for the present embodiment can include：
S101, the 3-axis acceleration data for obtaining the equipment that user carries.
The equipment that this implementation user carries can be wearable device, such as wearable bracelet, wearable wrist-watch etc..This sets
It is standby to include a variety of sensing equipments for gathering user data, such as including for measuring acceleration during user movement
Sensing equipment, sensing equipment for measuring user's heartbeat etc..
The coordinate system of above-mentioned 3-axis acceleration data can be X, Y, Z coordinate system, and corresponding 3-axis acceleration data are distinguished
Be user in motion, X-coordinate axle in X-coordinate axis component accelerates data, the Y-coordinate axle in Y-coordinate axis component to accelerate
Data and the Z coordinate axle in Z coordinate axis component accelerate data.Optionally, the coordinate system of above-mentioned 3-axis acceleration data may be used also
Think world coordinate system U, V, W coordinate system, corresponding 3-axis acceleration data be respectively user in motion, in U coordinate axle point
U coordinate axle in amount accelerates data, the V reference axis in V coordinate axis components to accelerate data and the W in W coordinate axis component to sit
Parameter accelerates data.Optionally, the coordinate system of 3-axis acceleration data can also be the coordinate system of other forms, the present embodiment pair
This is not limited.
The 3-axis acceleration data of the present embodiment can be decomposed according to a resultant acceleration, such as use sensing
Device measuring obtains a resultant acceleration a, and resultant acceleration a is decomposed along X, Y, Z-direction, obtains X-coordinate axle and accelerates number
According to aX, Y-coordinate axle accelerate data aYAccelerate data a with Z coordinate axleZ.Optionally, the 3-axis acceleration data of the present embodiment may be used also
To be the acceleration information on three change in coordinate axis direction directly directly collected by 3-axis acceleration sensing equipment.
When the equipment of the present embodiment is located in the wrist of user, when the acceleration information is the swing of the arm of user
Acceleration information, when equipment is located on the leg of user or when on pin, the acceleration information for user leg or foot motion when
Acceleration information, the position that the present embodiment dresses the equipment to user is not limited.
S102, periodicity matching is carried out to the acceleration information of each reference axis respectively, by periodically maximum reference axis
Remember step axle as target.
After the acceleration information for obtaining each reference axis, periodicity is carried out to each acceleration information of each reference axis
Match somebody with somebody.For example, for the acceleration information of each reference axis, the accelerating curve of each reference axis is drawn, judges the accelerating curve
Whether have periodically.As shown in Fig. 2 by taking X-coordinate axle as an example, it is assumed that the accelerating curve of X-coordinate axle is by 20 acceleration number of degrees
According to composition, wherein there are 18 points to meet periodic regularity, there is that the periodicity of two points is poor, now can be using 18 as X-coordinate
The periodicity matching value of axle.Similarly, can obtain in 20 acceleration informations, the periodicity matching value of Y-coordinate axle, it is assumed that
For the periodicity matching value of 15, and Z coordinate axle, it is assumed that be 16.Then, the maximum reference axis of periodicity matching value is made
Remember step axle for target, i.e., remember step axle using X-coordinate axle as target.
Optionally, can also be by calculating in each reference axis cycle similarity between each acceleration information, by cycle phase
Periodic size is used as like degree.For example, in the accelerating curve of X-coordinate axle, a reference cycle is chosen, judges each accelerate
Cycle phase similarity between degrees of data and the reference cycle upper corresponding points, such as judge acceleration information point r and reference cycle
Acceleration information point s corresponding to periodically, calculate amplitude difference and time difference between r and s, the amplitude between 2 points
It is identical, and time difference be the reference cycle cycle duration T when, then can determine that 2 points of the similarity be 100%.With reference to the party
Method, the cycle similarity of each acceleration information in each reference axis can be obtained, by the reference axis that cycle similarity sum is maximum
Remember step axle as target.
Optionally, can also be by determining the turning point in acceleration information corresponding to each reference axis, according to turning point
Periodically determine seasonal values.For example, judge a certain turning point of a certain reference axis and corresponding turning point in the front and rear cycle
Amplitude it is whether identical, and between duration whether be a cycle length, if then can determine that the turning point have periodically.
The periodicity of each turning point in each reference axis can be judged according to this method, then by the turnover of periodicity matching
Most reference axis of counting out remembers step axle as target.The specific descriptions of its detailed process reference example below, herein no longer
Repeat.
S103, the acceleration information according to corresponding to target note step axle, determine the step number of the user.
After target note step axle is determined, based on the target remembers step axle, the acceleration on step axle is remembered based on the target
Data, to determine the step number of user.
For example, the acceleration information according to corresponding to the target remembers step axle, draws the accelerating curve that target note walks axle, root
The step number of user is determined according to the number of trough and/or crest in the accelerating curve, one of trough or a crest represent
One step.It is assumed that the accelerating curve has 8 crests and 7 troughs, i.e. the step number of the user is 15.
Optionally, the step number of user can also be determined by calculating the number of turning point.Specifically, remember for target and walk
Each acceleration information corresponding to axle, it is research object to choose an acceleration information, by the acceleration information and adjacent two
Acceleration information is compared, when the acceleration information is more than two adjacent acceleration informations, or when the acceleration information is small
When two adjacent acceleration information, it is turning point to determine the acceleration information.Target note step can be determined according to this method
The turning point used of axle, the number of these turning points is defined as to the step number of user.
Optionally, note step device can also remember acceleration information corresponding to step axle according to other method based on target, it is determined that
The step number of user.
Step recording method provided in an embodiment of the present invention, the 3-axis acceleration data of the equipment carried by obtaining user, point
The other acceleration information to each reference axis carries out periodicity matching, remembers step axle using periodically maximum reference axis as target,
And the acceleration information according to corresponding to the target remembers step axle, determine the step number of the user.I.e. the present embodiment is due to considering
Periodicity during user movement, remembers step axle using periodically maximum reference axis as target, remembers step axle based on the target
Acceleration information, the accurate step number for obtaining user, and then realize and the accurate note of user is walked.
In a kind of possible implementation of the embodiment of the present invention, in the above-mentioned S102 acceleration to each reference axis respectively
Before degrees of data carries out periodicity matching, the method for the present embodiment can also include：
S100, using wave filter group the 3-axis acceleration data are filtered, wherein, the wave filter group is included not
The wave filter of same type, cut-off frequency corresponding to different types of wave filter are different.
Prior art, lowpass digital filter is set for the cadence scope of people, its passband is and actual typically in 0-4Hz
Situation is that the peak frequency that can be rendered obvious by the acceleration signal waveform of people's cadence is far longer than 4Hz, so so design
Digital filter is not applied to walk mode according to the note of several crests or trough.The present embodiment, when same user is in difference
Forms of motion under, or when the difference of the exercise habit of different user, different wave filters can be used, to adapt to difference
Cadence is walked mode, so that it is guaranteed that it is different walk race mode under note step precision accuracy.That is the wave filter group of the present embodiment can be with
Walked mode (for example, be careful, hurry up, run) suitable for limit low-and high-frequency, in a manner of improving limit low-and high-frequency and walk under note step
Precision.
The wave filter group of the present embodiment includes different types of wave filter, cut-off frequency corresponding to different types of wave filter
Difference, the acceleration information of different cadences can be filtered.
For example, user, when being careful, the frequency of its acceleration information is relatively low, this can now be added using low pass filter
Speed data is filtered, the acceleration information after being filtered.When user is running, the frequency of its acceleration information is higher,
The acceleration information can now be filtered using high-pass filter, the acceleration information after being filtered.
Optionally, the present embodiment can be filtered using moving average filter method, be specifically, N number of what is continuously obtained
Sampled value regards a queue as, and the length of queue is N, and sampling every time obtains a new data and is put into head of the queue, while throws away original
One data (first in first out) of tail of the queue.N number of data in queue are carried out arithmetic average computing, obtain new filter result.
Described on end, moving average filter method can regard the window that a fixed width is N as, slide on a timeline, often slide one
One filter value of secondary output.
After above-mentioned S100, above-mentioned S103 can specifically include：Respectively to the filtered acceleration number of degrees of each reference axis
According to periodicity matching is carried out, step axle is remembered using periodically maximum reference axis as target.
In the present embodiment, according to the difference of cadence during user movement, the different wave filter group of cut-off frequency is set, so as to
Ensure that difference walks the accuracy of note step precision under race mode, further increase the accuracy that user remembers step.
Fig. 3 is the flow chart for the step recording method that the embodiment of the present invention two provides, on the basis of above-described embodiment, this implementation
Example refers to the detailed process that note step device carries out periodicity matching to the filtered acceleration information of each reference axis respectively.
As shown in figure 3, above-mentioned S102 can specifically include：
S201, turning point in filtered acceleration information corresponding to each reference axis is obtained respectively.
The present embodiment can use triangle test, it is determined that in filtered acceleration information corresponding to each reference axis
Each turning point.Specifically, for the filtered acceleration information of a certain reference axis, obtain one and accelerate the number of degrees to add as target
Speed data, when acceleration information of the aimed acceleration data more than previous moment, and more than the acceleration of later moment in time
Data, it is determined that the aimed acceleration data are turning point, and the turning point is maximum；Or when the aimed acceleration number
According to the acceleration information less than previous moment, and less than the acceleration information of later moment in time, it is determined that the aimed acceleration number
It is minimum according to for turning point, the turning point.
For example, as illustrated in fig. 2, it is assumed that Fig. 2 is the acceleration wave after X-coordinate axle acceleration data after filtering device 1
Shape figure.As shown in Figure 2, two steps are a cycle, and stronger periodicity is presented in waveform, judge to avoid much using periodicity
The misdescription step of aperiodicity action.Specific implementation is as follows：Assuming that in Fig. 2 the amplitude size of sample point 0 be AMP0, sample point 1
Amplitude size is AMP1, the amplitude size of sample point 2 is AMP2, the amplitude size of sample point 6 is AMP6, the amplitude of sample point 7
Size is AMP7, the amplitude size of sample point 8 is AMP8.Due to AMP1<AMP0, and AMP1<AMP2, therefore, sample point 1 are to turn
Break, due to AMP7>AMP6, and AMP7>AMP8, therefore, sample point 7 are also turning point, according to the above method, can be obtained every
Each turning point corresponding to individual reference axis.
S202, for each turning point in each reference axis, obtain between the turning point and the latter turning point
First amplitude difference and the very first time are poor, and obtain the first turning point corresponding to the turning point in adjacent periods, and obtain institute
State the second difference in magnitude between the first turning point and the latter turning point and the second time difference.
S203, judge whether the first amplitude is poor equal with second difference in magnitude, and judge that the very first time is poor
It is whether equal with second time difference.
With continued reference to Fig. 2, sample point 1 is the previous turning point of sample point 7, obtains the width between sample point 1 and sample 7
It is worth difference DELTA AMP1, Δ AMP1 is poor as first amplitude, and obtain the time difference Δ between sample point 1 and sample 7
TIME1, it is that the very first time is poor by Δ TIME1.Sample point 3 is sample point 1 in the first turnover corresponding to next adjacent periods
Point, the latter turning point of sample point 3 is sample 4, according to the above method, obtains the amplitude difference between sample point 3 and sample 4
Δ AMP2, using Δ AMP2 as the second difference in magnitude, and the time difference Δ TIME2 between sample point 3 and sample 4 is obtained, by this
Δ TIME2 was the second time difference.Next, it is determined that first amplitude difference it is whether equal with the second difference in magnitude, and the very first time difference and
Whether the second time difference is equal.It is if equal, it is determined that periodically the match is successful for the turning point.It should be noted that this implementation
Example described in it is equal be not it is essentially equal, but first amplitude difference the second difference in magnitude between difference, and the very first time it is poor
Difference between the second time difference meets a small value.
Optionally, the first amplitude difference of the present embodiment and very first time difference can also be the turning point and previous turning point it
Between difference in magnitude and time difference, corresponding second difference in magnitude and the second time difference can also be the first turning point and previous turning point
Between difference in magnitude and the time difference.
For example, using the principle of first in first out, with this 4 rising edges of a, b, c, d of current time caching and decline
First amplitude difference and the very first time are poor corresponding to, and the second difference in magnitude corresponding to this 4 rising edges of e, f, g, h and trailing edge
Exemplified by the second time difference, if meeting periodically, following condition (1) should be met：
But during true walk, the Acceleration pulse of collection is approximately periodic waveform, therefore periodically
Condition (1) is slightly modified during judgement, such as condition (2)：
Wherein, α and β is default constant, and with specific reference to setting is actually needed, the present embodiment is without limitation.
Further, in order to improve the accuracy of periodically matching, then also need to determine first amplitude corresponding to turning point
Difference limiting value corresponding no more than each motion state of the mankind with the second amplitude.If specifically, according to above-mentioned judgement first
After difference in magnitude is equal with the second difference in magnitude, and very first time difference is equal with the second time difference, it is also necessary to perform S204 and S205
The step of.
S204, the first amplitude difference is judged whether in default amplitude section, and judge that the very first time is poor
Whether in predetermined period section.
If periodically the match is successful for S205, it is determined that the turning point.
Wherein, the limiting value that amplitude section is the mankind's corresponding motion amplitude under motion state is preset, specifically includes pole
Big value and minimum.Similarly, predetermined period section is the limiting value of the mankind's corresponding period of motion under motion state, specific bag
Include maximum and minimum.It is determined that first amplitude is poor and very first time difference is after above-mentioned condition (2) is met, it is also necessary to it is determined that
Whether first amplitude difference meets whether default amplitude section, and very first time difference meet predetermined period section, if turning point
Corresponding first amplitude difference falls in default amplitude section, and very first time difference falls in predetermined period section, then can determine that this
Periodically the match is successful for turning point.When any one in first amplitude difference and very first time difference is unsatisfactory for above-mentioned condition, then
It is unsuccessful to determine that the turning point periodically matches.
S206, the number for obtaining periodicity the first turning point that the match is successful in each turning point corresponding to each reference axis,
Reference axis corresponding to the number of maximum first turning point is remembered into step axle as target.
With reference to the above method, it can judge each turning point corresponding to each reference axis whether it periodically matches, and
The turning point periodically matched in each reference axis is obtained, the turning point that the periodicity matches is designated as the first turning point.So,
The number of the first turning point corresponding to each reference axis can be obtained, the first turning point is obtained into the maximum reference axis of number as mesh
Mark step axle.
For example, include 20 turning points in the acceleration information of current time each reference axis buffering, according to above-mentioned side
Method, periodicity matching is carried out to turning point corresponding to each reference axis.It is assumed that X-coordinate axle has 18 turning points periodically to match
Success, Y-coordinate axle has 15 turning points, and periodically the match is successful, and Z coordinate axle has 10 turning points, and periodically the match is successful.This
When, you can using periodically the match is successful, the most X-coordinate axle of number remembers step axle as target, with acceleration corresponding to X-coordinate axle
Data, to determine the step number of user.
Step recording method provided in an embodiment of the present invention, by obtaining the turnover in acceleration information corresponding to each reference axis
Point, obtains first amplitude difference between the turning point and the latter turning point and the very first time is poor, and in adjacent periods, this turn
The second difference in magnitude and the second time difference between first turning point corresponding to break and its latter turning point, and by first amplitude
Difference and the second difference in magnitude, and very first time difference are matched with the second time difference, when first amplitude difference and the second difference in magnitude phase
Deng, and the very first time difference it is equal with the second time difference when, determine the turning point periodically the match is successful, and will periodically match most
Reference axis corresponding to more turning points remembers step axle as target, and it is accurate to remember that the acceleration information of step axle is carried out to user based on the target
Really note step.
Fig. 4 is the flow chart for the step recording method that the embodiment of the present invention three provides, and Fig. 5 is the letter of the step recording method described in Fig. 4
Make flow chart.On the basis of above-described embodiment, the present embodiment refers to note step device and remembers that step axle is corresponding according to the target
Acceleration information, determine the detailed process of user's step number.As shown in Figure 4 and Figure 5, above-mentioned S103 can specifically include：
S301, each turning point walked in acceleration information corresponding to axle is remembered to the target, judge that current periodic matches
The turning point that is matched with previous periodicity of turning point between the 3rd time difference whether be more than or equal to first threshold.
As shown in Figure 4 and Figure 5, after having determined target note step axle according to above-mentioned steps, remembered using the target corresponding to step axle
Acceleration information carries out note step to user.Specifically, according to the method for above-described embodiment, first determine whether corresponding to target note step axle
Whether acceleration information is turning point, if so, then using waveform [i] ++ the crest and the number of trough that record turning point is formed
Mesh.Next, it is determined that whether the turning point meets periodically, and whether the cycle corresponding to the turning point meets target note step axle pair
The periodic quantity T for the acceleration information answered.If the turning point meets periodically, to obtain the turning point and match with previous periodicity
Turning point between the 3rd time difference, and judge whether the 3rd time difference was more than or equal to default first threshold, it
Movement limit value of one threshold value according to user under different forms of motion, such as when the user walks, the time between two steps
The maximum of difference, the size of first threshold are set according to time situation, and the present embodiment is without limitation.
S302, if so, then remembering the cycle of the corresponding acceleration information of step axle according to the 3rd time difference and the target
Value, determine the step number of the user.
S303, if it is not, then according to the target remember step axle correspond to acceleration information turning point number, determine the use
The step number at family.
If the 3rd time difference between the turning point and the previous periodicity turning point that the match is successful is more than first threshold,
Although then illustrating that now periodically the match is successful for this point of this turn, periodicity is poor, such as user's hand during walking has
Caused turning point is periodically poor during irregular action (such as answering the call, action of eating is interspersed in away during race).Now,
It can determine the user's according to the periodic quantity of the 3rd time difference acceleration information corresponding with target note step axle
Step number.For example, being compensated according to StepsReturn=2timeB [i]/T, wherein Steps Return for step number, timeB [i] is
3rd time difference, the total step number of user are that the step number calculated before compensates plus the step number, are turned for example, the turning point is the 9th
Break, then the total step number of user is 2+2timeB [i]/T.Then timeB [i] is set to 0, waveform [i] is set to 0, after
Continue the judgement of next turning point.
If the 3rd time difference between the turning point that the turning point matches with previous periodicity is less than first threshold, say
The bright turning point is periodically strong, can remember that step axle corresponds to the number of the turning point of acceleration information according to the target, determine institute
State the step number of user.For example, according to formula S teps Return=waveform [i]/2, the step number compensation of user is obtained, wherein
As waveform [i]=1, waveform [i]/2 is 0.5 step.And the total step number of user adds this for the step number calculated before
Step number is compensated, for example, the turning point is the 9th turning point, then the total step number of user is 2+waveform [i]/2.Then will
TimeB [i] is set to 0, waveform [i] and is set to 0, continues the judgement of next turning point.
It should be noted that as shown in figure 5, the present embodiment 8 turning points before correspond to determine that target note walks axle
Acceleration information cycle.Specifically, determining the waveform of a cycle using preceding 4 turning points, then, second round is used
Corresponding 4 turning points go whether the cycle that 4 turning points determine before detecting sets up, that is, 4 turning points and the last week after judging
Whether the periodic Count [i] between 4 turning points corresponding in the phase are equal to 1, and wherein periodic Count are real-time
Periodically strong and weak index.If it is equal to 1, it is determined that each turning point and upper each turning point of previous cycle on the latter cycle
Cycle match, now waveform [i]=8, user walked 2 steps.After the cycle determines, since the 9th turning point, root
Judge whether the periodicity between the turning point and corresponding turning point in the first two cycle matches according to the above method, its specific mistake
Journey will not be repeated here with reference to the description of above-described embodiment.
Step recording method provided in an embodiment of the present invention, it is each in acceleration information corresponding to step axle by remembering to the target
Turning point, judge that the 3rd time difference between the turning point that the turning point of current periodic matching matches with previous periodicity is
It is no to be more than or equal to first threshold；If so, then being walked according to the 3rd time difference with target note, axle is corresponding to accelerate the number of degrees
According to periodic quantity, determine the step number of the user；If it is not, then remember that step axle corresponds to the turning point of acceleration information according to the target
Number, determine the step number of the user, and then realize note step accurate to user, improve Consumer's Experience.
Fig. 6 is the flow chart for the step recording method that the embodiment of the present invention four provides, and Fig. 7 is to accelerate corresponding to different motion form
Spend oscillogram.On the basis of above-described embodiment, the present embodiment refers to note step device and determines the specific of user movement form
Process.As shown in fig. 6, the present embodiment can include：
S401, according to the target remember step axle corresponding to each acceleration information amplitude maximum and minimum value, determine institute
State the first energy of acceleration information.
As shown in fig. 7, the Acceleration pulse that user is formed under different forms of motion is different, wherein the amplitude being careful
<The amplitude normally walked<The amplitude hurried up<The amplitude jogged away<The amplitude normally run<The amplitude hurried up.Therefore, can be according to mesh
The maximum and minimum value of acceleration information and amplitude corresponding to mark step axle, determine acceleration information corresponding to target note step axle
The first energy, such as according to formula P1=max ([acc1,acc2,…accn])-min([acc1,acc2,…accn]), obtain
First energy P of acceleration information1, wherein acc is the amplitude for accelerating data, and n is acceleration information corresponding to target note step axle
Number.
Then, by the P1Compared with predetermined threshold value corresponding to each forms of motion, if the P1With a certain forms of motion
When predetermined threshold value matches, it is determined that forms of motion corresponding to the predetermined threshold value is the current forms of motion of user.Specifically, obtain
The target first interval intersected with first energy, if the target first interval is one, it is determined that the fortune of the user
Dynamic form is forms of motion corresponding to the target first interval.Wherein, first interval corresponding to different forms of motion is different.
As shown in fig. 7, for the same position of same person, the first energy fluctuated by acceleration can be distinguished away
Run.Different people need the target first interval that sets may slightly difference, the target first interval of acquiescence is for most people's
Walking race can distinguish, but it is possible that erroneous judgement during hurrying up, jogging and going up downstairs.I.e. when the mesh intersected with the first energy
When the number for marking first interval is at least two, then the present embodiment also needs to perform following steps：
The difference in magnitude of two adjacent acceleration informations in S402, the acceleration information according to corresponding to target note step axle
Absolute value sum, determine the second energy of the acceleration information.
The present embodiment is for the forms of motion that can not be determined according to the first energy, can if fruit product is bracelet or wrist-watch
The judgement of the second energy during increasing to arm vertical oscillation and lift swing, that is, judge that wrist is in vertically getting rid of when on foot
The wrist that carries when arm is still run gets rid of arm, and then improves away the accuracy of race identification.
Specifically, according to formulaCalculate the second energy P of acceleration information2, wherein acciFor
The amplitude of i-th of acceleration information.
S403, the forms of motion for determining according to first energy and second energy user.
Specifically, when the number of the target first interval intersected with the first energy is at least two, each target the is obtained
First operation form set corresponding to one section.Then, the target second interval intersected with second energy is obtained, and is obtained
Second operation form set corresponding to the target second interval.Then, form set and described second is run by described first
Forms of motion of the identical operation form as the user in operation form set.Corresponding to wherein different forms of motion
Two sections are different.
For example, according to the above method determine current target note step axle corresponding to acceleration information the first energy
P1With the second energy P2.Assuming that with the first energy P1Intersecting target first interval is target first interval A and target first interval
B, wherein forms of motion corresponding to target first interval A are to hurry up, and forms of motion corresponding to target first interval B is to jog.Root
According to above method determination and the second energy P2Intersecting target second interval is target second interval C and target second interval D,
Forms of motion to jog, to be upper go downstairs by forms of motion corresponding to target second interval D wherein corresponding to target second interval C.This
When according to the first energy P1With the second energy P2Identical operation form to jog, i.e. use by current time in the forms of motion of determination
The forms of motion at family is to jog.
Step recording method provided in an embodiment of the present invention, each acceleration information amplitude according to corresponding to the target remembers step axle
Maximum and minimum value, determine the first energy of the acceleration information；And determine the user's according to first energy
Forms of motion.When determining that the forms of motion of the user has multiple according to first energy, remembered according to the target and walked
The absolute value sum of the difference in magnitude of two adjacent acceleration informations, determines the acceleration information in acceleration information corresponding to axle
The second energy；The forms of motion of the user is determined according to first energy and second energy, and then improved away
Run the accuracy of identification.
Fig. 8 is the structure chart for the note step device that the embodiment of the present invention one provides.The note step device of the present embodiment can be can
Wearable device, note step device can be software, hardware or soft or hard combination.As shown in figure 8, the note step device of the present embodiment,
Including：
Acquisition module 10, the 3-axis acceleration data of the equipment for obtaining user's carrying；
Periodicity matching module 20, for carrying out periodicity matching to the acceleration information of each reference axis respectively, by week
The maximum reference axis of phase property remembers step axle as target；
Determining module 30, for acceleration information corresponding to remembering step axle according to the target, determine the step number of the user.
Note step device shown in the embodiment of the present invention, can perform the technical scheme shown in above method embodiment, in fact
Existing principle and beneficial effect are similar, are no longer repeated herein.
Fig. 9 is the structure chart for the note step device that the embodiment of the present invention two provides.On the basis of above-described embodiment, this implementation
The device of example also includes：
Filtering module 40, for being filtered using wave filter group to the 3-axis acceleration data, wherein, the filtering
Device group includes different types of wave filter, and cut-off frequency corresponding to different types of wave filter is different.
The periodicity matching module 20, specifically for carrying out week to the filtered acceleration information of each reference axis respectively
Phase property matches, and remembers step axle using periodically maximum reference axis as target.
Note step device shown in the embodiment of the present invention, can perform the technical scheme shown in above method embodiment, in fact
Existing principle and beneficial effect are similar, are no longer repeated herein.
Figure 10 is the structure chart for the note step device that the embodiment of the present invention three provides.On the basis of above-described embodiment, this reality
Applying the device of example also includes judge module 50：
The acquisition module 10, it is additionally operable to obtain turn in filtered acceleration information corresponding to each reference axis respectively
Break, for each turning point in each reference axis, and obtain the first width between the turning point and the latter turning point
Value difference and the very first time are poor, and obtain the first turning point corresponding to the turning point in adjacent periods, and obtain described first
The second difference in magnitude and the second time difference between turning point and the latter turning point.
The judge module 50, for judging whether the first amplitude is poor equal with second difference in magnitude, and judge
Whether the very first time is poor equal with second time difference.
The determining module 30, for judging that the first amplitude is poor with second difference in magnitude in the judge module 50
It is equal, and judge that the very first time is poor when with second time difference being equal, determine the turning point periodically matching into
Work(.
In a kind of possible implementation of the present embodiment, the judge module 50, it is additionally operable to judging described first
Difference in magnitude is equal with second difference in magnitude, and the very first time it is poor it is equal with second time difference after, described in judgement
Whether first amplitude difference is in default amplitude section, and judges whether the very first time difference is located at predetermined period section
It is interior.
The determining module 30, for judging the first amplitude difference positioned at default amplitude section in the judge module 50
It is interior, and when judging that very first time difference is in predetermined period section, determining the turning point, periodically the match is successful.
Note step device shown in the embodiment of the present invention, can perform the technical scheme shown in above method embodiment, in fact
Existing principle and beneficial effect are similar, are no longer repeated herein.
In a kind of possible implementation of the present embodiment, the acquisition module 10, it is additionally operable to obtain each reference axis
The number of periodicity the first turning point that the match is successful in corresponding each turning point.
The determining module 30, it is additionally operable to reference axis corresponding to the number of maximum first turning point remembering step as target
Axle.
In the alternatively possible implementation of the present embodiment, the judge module 50, it is additionally operable to remember the target
Each turning point in acceleration information corresponding to axle is walked, judges that the turning point of current periodic matching matches with previous periodicity
Turning point between the 3rd time difference whether be more than or equal to first threshold.
The determining module 30, be additionally operable to the judge module 50 judge current periodic matching turning point with it is previous
When the 3rd time difference between the turning point of individual periodicity matching is more than or equal to first threshold, according to the 3rd time difference and
The periodic quantity of acceleration information corresponding to the target note step axle, determine the step number of the user.
The determining module 30, be additionally operable to the judge module 50 judge current periodic matching turning point with it is previous
When the 3rd time difference between the turning point of individual periodicity matching is less than first threshold, remembers that step axle is corresponding according to the target and accelerate
The number of the turning point of degrees of data, determine the step number of the user.
Note step device shown in the embodiment of the present invention, can perform the technical scheme shown in above method embodiment, in fact
Existing principle and beneficial effect are similar, are no longer repeated herein.
In the alternatively possible implementation of the present embodiment, the determining module 30, it is additionally operable to according to the target
The maximum and minimum value of each acceleration information amplitude corresponding to note step axle, determine the first energy of the acceleration information；And
The forms of motion of the user is determined according to first energy.
In the alternatively possible implementation of the present embodiment, the determining module 30, it is additionally operable to according to described
When one energy determines that the user has at least two forms of motion, in the acceleration information according to corresponding to the target remembers step axle
The absolute value sum of the difference in magnitude of two adjacent acceleration informations, determine the second energy of the acceleration information；And according to institute
State the first energy and second energy determines the forms of motion of the user.
In the alternatively possible implementation of the present embodiment, the acquisition module 10, it is additionally operable to obtain and described the
The intersecting each target first interval of one energy, wherein, first interval corresponding to different forms of motion is different.
The determining module 30, for being one in the target first interval, the forms of motion for determining the user is
Forms of motion corresponding to the target first interval.
In the alternatively possible implementation of the present embodiment, the acquisition module 10, it is additionally operable in the target
When one section is at least two, the first operation form set corresponding to each target first interval is obtained；And obtain and described second
The intersecting each target second interval of energy, and obtain the second operation form set, different fortune corresponding to each target second interval
Second interval corresponding to dynamic form is different.
The determining module 30, for will described first operation form set and it is described second operation form set in it is identical
Forms of motion of the operation form as the user.
Note step device shown in the embodiment of the present invention, can perform the technical scheme shown in above method embodiment, in fact
Existing principle and beneficial effect are similar, are no longer repeated herein.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, either which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (12)
- A kind of 1. step recording method, it is characterised in that including：Obtain the 3-axis acceleration data for the equipment that user carries；Periodicity matching is carried out to the acceleration information of each reference axis respectively, remembered periodically maximum reference axis as target Walk axle；The acceleration information according to corresponding to the target remembers step axle, determine the step number of the user.
- 2. according to the method for claim 1, it is characterised in that described that the acceleration information of each reference axis is carried out respectively Before periodically matching, methods described also includes：The 3-axis acceleration data are filtered using wave filter group, wherein, the wave filter group includes different types of Wave filter, cut-off frequency corresponding to different types of wave filter are different.
- 3. according to the method for claim 2, it is characterised in that described that the acceleration information of each reference axis is carried out respectively Periodically match, remember step axle using periodically maximum reference axis as target, specifically include：Periodicity matching is carried out to the filtered acceleration information of each reference axis respectively, using periodically maximum reference axis as Target note step axle.
- 4. according to the method for claim 3, it is characterised in that described respectively to the filtered acceleration number of degrees of each reference axis According to periodicity matching is carried out, specifically include：The turning point in filtered acceleration information corresponding to each reference axis is obtained respectively；For each turning point in each reference axis, the first amplitude obtained between the turning point and the latter turning point is poor It is poor with the very first time, and the first turning point corresponding to the turning point in adjacent periods is obtained, and obtain first turnover The second difference in magnitude and the second time difference between point and the latter turning point；Judge whether the first amplitude is poor equal with second difference in magnitude, and judge that the very first time is poor with described second Whether the time difference is equal；If, it is determined that periodically the match is successful for the turning point.
- 5. according to the method for claim 4, it is characterised in that poor with the second difference in magnitude phase in the first amplitude Deng, and the very first time it is poor it is equal with second time difference after, methods described also includes：The first amplitude difference is judged whether in default amplitude section, and judges the very first time difference whether positioned at pre- If in cycle section；If, it is determined that periodically the match is successful for the turning point.
- 6. according to the method for claim 5, it is characterised in that described to remember step using periodically maximum reference axis as target Axle, specifically include：The number of periodicity the first turning point that the match is successful in each turning point corresponding to each reference axis is obtained, by maximum first Reference axis corresponding to the number of turning point remembers step axle as target.
- 7. according to the method for claim 1, it is characterised in that described to accelerate the number of degrees according to corresponding to the target remembers step axle According to determining the step number of the user, specifically include：Each turning point in acceleration information corresponding to step axle is remembered to the target, judge the turning point of current periodic matching with Whether the 3rd time difference between the turning point of previous periodicity matching is more than or equal to first threshold；If so, institute is then determined according to the periodic quantity of the 3rd time difference acceleration information corresponding with target note step axle State the step number of user；If it is not, then remembering that step axle corresponds to the number of the turning point of acceleration information according to the target, the step number of the user is determined.
- 8. according to the method described in claim any one of 1-7, it is characterised in that methods described also includes:The maximum and minimum value of each acceleration information amplitude, determine the acceleration number of degrees according to corresponding to the target remembers step axle According to the first energy；The forms of motion of the user is determined according to first energy.
- 9. according to the method for claim 8, it is characterised in that when according to first energy determine the user have extremely During few two forms of motion, methods described also includes：According to corresponding to the target remembers step axle the absolute value of the difference in magnitude of two acceleration informations adjacent in acceleration information it With determine the second energy of the acceleration information；The forms of motion of the user is determined according to first energy and second energy.
- 10. according to the method for claim 8, it is characterised in that described to determine the user's according to first energy Forms of motion, specifically include：Each target first interval intersected with first energy is obtained, wherein, first interval corresponding to different forms of motion It is different；If the target first interval is one, it is determined that the forms of motion of the user is corresponding to the target first interval Forms of motion.
- 11. according to the method for claim 10, it is characterised in that described if the target first interval is at least two The forms of motion of the user is determined according to first energy and second energy, is specifically included：Obtain the first operation form set corresponding to each target first interval；Each target second interval intersected with second energy is obtained, and obtains the second operation corresponding to each target second interval Form set, second interval corresponding to different forms of motion are different；Identical in described first operation form set and the second operation form set is run into form as the user Forms of motion.
- 12. one kind note step device, it is characterised in that including：Acquisition module, the 3-axis acceleration data of the equipment for obtaining user's carrying；Periodicity matching module, will periodically most for carrying out periodicity matching to the acceleration information of each reference axis respectively Big reference axis remembers step axle as target；Determining module, for acceleration information corresponding to remembering step axle according to the target, determine the step number of the user.
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