CN106510721B - Balance evaluation method of walking and device, walking balance monitoring method and system - Google Patents

Balance evaluation method of walking and device, walking balance monitoring method and system Download PDF

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CN106510721B
CN106510721B CN201611136213.2A CN201611136213A CN106510721B CN 106510721 B CN106510721 B CN 106510721B CN 201611136213 A CN201611136213 A CN 201611136213A CN 106510721 B CN106510721 B CN 106510721B
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waist
directions
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diaphragm
foot
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CN106510721A (en
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施则威
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
    • A61B5/1118—Determining activity level
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/6802—Sensor mounted on worn items
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/6802—Sensor mounted on worn items
    • A61B5/6804—Garments; Clothes
    • A61B5/6807—Footwear
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/6813—Specially adapted to be attached to a specific body part
    • A61B5/6823—Trunk, e.g., chest, back, abdomen, hip
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/6813—Specially adapted to be attached to a specific body part
    • A61B5/6829—Foot or ankle
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/683—Means for maintaining contact with the body
    • A61B5/6832—Means for maintaining contact with the body using adhesives
    • A61B5/6833—Adhesive patches
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
    • A61B5/7235—Details of waveform analysis
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
    • A61B5/7235—Details of waveform analysis
    • A61B5/7253—Details of waveform analysis characterised by using transforms
    • A61B5/7257—Details of waveform analysis characterised by using transforms using Fourier transforms
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2503/00—Evaluating a particular growth phase or type of persons or animals
    • A61B2503/08—Elderly

Abstract

The present invention relates to walking balance evaluation method and devices, walking balance monitoring method and system.Balance evaluation method of walking includes: receiving step, waist when receiving real-time detection human body walking, left foot and right crus of diaphragm acceleration and the xyz all directions acceleration information of waist, left foot and right crus of diaphragm that obtains；The xyz all directions acceleration information of waist, left foot and right crus of diaphragm is converted into the xyz all directions frequency spectrum data of waist, left foot and right crus of diaphragm by time-frequency domain switch process respectively；It synthesizes percent harmonic distortion and calculates step, principal frequency component and harmonic component are decomposed respectively from the xyz all directions frequency spectrum data of waist, left foot and right crus of diaphragm, the principal frequency component and harmonic component of each frequency spectrum data based on decomposition seek the percent harmonic distortion of each frequency spectrum data, and the xyz all directions percent harmonic distortion based on waist, left foot and right crus of diaphragm obtains synthesis percent harmonic distortion；Evaluation procedure, according to synthesis percent harmonic distortion evaluation walking balanced capacity；And output step, export the result evaluated by evaluation procedure.

Description

Balance evaluation method of walking and device, walking balance monitoring method and system
Technical field
The present invention relates to the balanced capacity of human body when monitoring walking and its technologies of variation, more particularly to walking balance evaluation Method and device, walking balance monitoring method and system, wearable human balance monitoring instrument.
Background technique
The elderly is because the reasons such as aging, disease, Long-term taking medicine, balance performance are gradually degenerated, when bad movement in walking Often occur, falls down danger and gradually increase.Balance performance degenerative process varies with each individual again, the time point that do not impose uniformity without examining individual cases, old man couple The physical condition of oneself often recognizes unclear, when balanced capacity degenerates to alert locations, does not take preventive measures in time, meets Just unable to do what one wishes when to emergency, ataxic gait causes to fall down and lead to tragedy.If a kind of method that science can be found, The balance cipher decoding of human body is come out, an index is developed, is continuously conversed by real-time walking posture data The quality of one user equilibrium, it will be able to screen out to come the high the elderly of risk of falls, the elderly's balanced capacity is failed Trend display, prompt its careful, reinforce protection, avoid falling and hurting oneself.
In addition, some diseases will not sudden onset but slowly gradual change, invisible strong, initial human body is can not to experience Balanced capacity when arriving, but will affect the physiological function of human body, for example causing people's walking, run changes.If can Real-time monitoring walking posture finds the abnormal deterioration of balanced capacity in time, can find disease, such energy in the time earlier It is enough preferably to treat disease, reduce the pain of sufferer.
However, total balance of the body influence factor is more, relationship complexity is involved, it is difficult to study.Balanced capacity measurement, often at present That see is Berg balance scale (Berg Balance Scale, BBS) or Tinetti scaling method (Tinetti Performance Oriented Mobility Assessment, Tinetti POMA), testee need to do specified dynamic under specific scene Make, for example, stand up, sit down, touching, closing one's eyes, 3m walking etc., by tester according to movement complete quality score, subjective judgement Comparison of ingredients it is more.Common apparatus measures are then that testee is allowed to complete required movement on experiment porch, by instrument record phase Data are closed, such as in eye opening, the center of gravity drift situation closed one's eyes, be interfered when stimulating, or completed on a treadmill specified dynamic Stride, cadence when making etc..Apparatus measures are more objective, but as scaling method, and measured is still some indirect indexes, It is popular universal very difficult also, since equipment volume is huge, involves great expense.In addition, the test of laboratory special scenes, It is not the true representation of balanced capacity in daily walking, therefore, there is no solve normalization, facilitation, do not interfere testee Daily routines, the directly problem of the balanced ability of human body under test real situation.
Summary of the invention
Therefore, it is badly in need of developing the technology that can monitor balanced ability of human body from daily walking motion.
In order to solve the problem above-mentioned, according to an aspect of the present invention, a kind of walking balance evaluation method is provided, it is special Sign is, front-rear direction is being denoted as the direction x, and left and right directions is denoted as the direction y, in the case that up and down direction is denoted as the direction z, packet It includes:
Receiving step receives the acceleration by waist, left foot and right crus of diaphragm when acceleration transducer real-time detection human body walking Degree and the xyz all directions acceleration information of the waist, left foot and right crus of diaphragm obtained；
Time-frequency domain switch process, by the xyz all directions acceleration information of the received waist, left foot and right crus of diaphragm point It is not converted into the xyz all directions frequency spectrum data of the waist, left foot and right crus of diaphragm；
It synthesizes percent harmonic distortion and calculates step, from each xyz all directions frequency spectrum data of the waist, left foot and right crus of diaphragm It decomposes principal frequency component respectively and harmonic component, principal frequency component and harmonic component based on each frequency spectrum data decomposited seeks each frequency The percent harmonic distortion of modal data, and each xyz all directions percent harmonic distortion is closed based on the waist, left foot and right crus of diaphragm At percent harmonic distortion；
Evaluation procedure evaluates walking balanced capacity according to the synthesis percent harmonic distortion；And
Step is exported, the result evaluated by the evaluation procedure is exported.
Preferably, in the time-frequency domain switch process, the xyz all directions of the left foot and right crus of diaphragm are also accelerated into degree It is superimposed frequency spectrum data according to by the xyz all directions for being converted into left and right foot after the corresponding superposition of all directions respectively,
The walking balance evaluation method further include:
Frequency spectrum correlation calculations step calculates the left and right based on the xyz all directions frequency spectrum data of the left foot and right crus of diaphragm Frequency spectrum related coefficient between foot, the xyz all directions of xyz all directions superposition frequency spectrum data and the waist based on the left and right foot Frequency spectrum data calculates the frequency spectrum related coefficient between the waist and the left and right foot, and related based on the frequency spectrum between the left and right foot Frequency spectrum related coefficient between coefficient and the waist and the left and right foot obtains synthesis related coefficient,
In the evaluation procedure, it is flat that walking is evaluated according to the synthesis percent harmonic distortion and the synthesis related coefficient Weighing apparatus ability.
In addition, according to another aspect of the present invention, providing a kind of walking balance evaluation method, which is characterized in that inciting somebody to action Front-rear direction is denoted as the direction x, and left and right directions is denoted as the direction y, in the case that up and down direction is denoted as the direction z, comprising:
Receiving step receives waist, left foot and right crus of diaphragm by body when acceleration transducer real-time detection human body walking Acceleration and the xyz all directions acceleration information of the waist, left foot and right crus of diaphragm that obtains；
Time-frequency domain switch process, by the xyz all directions acceleration information of the received waist, left foot and right crus of diaphragm point It is not converted into the xyz all directions frequency spectrum data of the waist, left foot and right crus of diaphragm, and by the xyz all directions of the left foot and right crus of diaphragm Acceleration information is superimposed frequency spectrum data by the xyz all directions for being converted into left and right foot after the corresponding superposition of all directions respectively；
Frequency spectrum correlation calculations step calculates the left and right based on the xyz all directions frequency spectrum data of the left foot and right crus of diaphragm Frequency spectrum related coefficient between foot, the xyz all directions of xyz all directions superposition frequency spectrum data and the waist based on the left and right foot Frequency spectrum data calculates the frequency spectrum related coefficient between the waist and the left and right foot, and related based on the frequency spectrum between the left and right foot Frequency spectrum related coefficient between coefficient and the waist and the left and right foot obtains synthesis related coefficient；
Evaluation procedure evaluates walking balanced capacity according to the synthesis related coefficient；And
Step is exported, the result evaluated by the evaluation procedure is exported.
In addition, according to other aspects of the invention, providing a kind of walking balance monitoring method, which is characterized in that will before Rear direction is denoted as the direction x, and left and right directions is denoted as the direction y, in the case that up and down direction is denoted as the direction z, comprising:
Detecting step, waist, left foot and the right crus of diaphragm of body when distinguishing real-time detection human body walking by acceleration transducer Acceleration, obtain the xyz all directions acceleration information of the waist, left foot and right crus of diaphragm；And
Sending step sends the xyz all directions acceleration information of the waist, left foot and right crus of diaphragm,
Wherein, the walking balance monitoring method carries out walking balance by any of the above-described kind of walking balance evaluation method Evaluation.
According to other aspects of the invention, a kind of walking balance evaluating apparatus is provided, which is characterized in that by front-rear direction It is denoted as the direction x, left and right directions is denoted as the direction y, in the case that up and down direction is denoted as the direction z, comprising:
Receiving unit receives waist, left foot and the right side by body when acceleration transducer real-time detection human body walking The acceleration of foot and the xyz all directions acceleration information obtained；
Time-frequency domain converter section distinguishes the xyz all directions acceleration information of the received waist, left foot and right crus of diaphragm It is converted into the xyz all directions frequency spectrum data of the waist, left foot and right crus of diaphragm；
Percent harmonic distortion calculation part is synthesized, described in the decomposition of the xyz all directions frequency spectrum data of the waist, left foot and right crus of diaphragm The principal frequency component and harmonic component of the xyz all directions of waist, left foot and right crus of diaphragm, based on the waist, left foot and the right side decomposited The principal frequency component and harmonic component of the xyz all directions of foot seek the harmonic wave of the xyz all directions of the waist, left foot and right crus of diaphragm respectively Aberration rate, and the percent harmonic distortion of the xyz all directions based on the waist, left foot and right crus of diaphragm obtains synthesis percent harmonic distortion；
Evaluation section evaluates walking balanced capacity according to the synthesis percent harmonic distortion；And
Output unit exports the result evaluated by the evaluation section.
Preferably, the time-frequency domain converter section is also by the xyz all directions acceleration information of the left foot and right crus of diaphragm by each The xyz all directions superposition frequency spectrum data of left and right foot is converted into after the corresponding superposition in direction respectively,
The walking balances evaluating apparatus further include: frequency spectrum correlation calculations portion, the xyz based on the left foot and right crus of diaphragm are each Directional spectrum data calculate the frequency spectrum related coefficient between the left and right foot, the xyz all directions superposition of data based on the left and right foot The frequency spectrum related coefficient between the waist and the left and right foot is calculated with the xyz all directions frequency spectrum data of the waist, and is based on Frequency spectrum related coefficient and the waist between the left and right foot is related to the frequency spectrum related coefficient acquisition synthesis between the left and right foot Coefficient,
The evaluation section evaluates walking balanced capacity according to the synthesis percent harmonic distortion and the synthesis related coefficient.
In addition, according to other aspects of the invention, provide a kind of walking balance evaluating apparatus, which is characterized in that will before Rear direction is denoted as the direction x, and left and right directions is denoted as the direction y, in the case that up and down direction is denoted as the direction z, comprising:
Receiving unit receives waist, left foot and the right side by body when acceleration transducer real-time detection human body walking The acceleration of foot and the xyz all directions acceleration information obtained；
Time-frequency domain converter section distinguishes the xyz all directions acceleration information of the received waist, left foot and right crus of diaphragm It is converted into the xyz all directions frequency spectrum data of the waist, left foot and right crus of diaphragm, and the xyz all directions of the left foot and right crus of diaphragm are added Speed data is superimposed frequency spectrum data by the xyz all directions for being converted into left and right foot after the corresponding superposition of all directions respectively；
Frequency spectrum correlation calculations portion calculates the left and right foot based on the xyz all directions frequency spectrum data of the left foot and right crus of diaphragm Between frequency spectrum related coefficient, the xyz all directions frequency of xyz all directions superposition frequency spectrum data and the waist based on the left and right foot Modal data calculates the frequency spectrum related coefficient between the waist and the left and right foot, and based on the frequency spectrum phase relation between the left and right foot Frequency spectrum related coefficient between the several and described waist and the left and right foot obtains synthesis related coefficient；
Evaluation section evaluates walking balanced capacity according to the synthesis related coefficient；And
Output unit exports the result evaluated by the evaluation section.
In addition, according to other aspects of the invention, providing a kind of walking balance monitoring system characterized by comprising
Waist monitoring device comprising: waist acceleration transducer, the acceleration of waist when detecting human body walking obtain The xyz all directions acceleration information of the waist；And waist communication unit, what transmission was obtained by waist acceleration transducer The xyz all directions acceleration information of the waist；
Left foot monitoring device comprising: left foot acceleration transducer, the acceleration of left foot when detecting human body walking obtain The xyz all directions acceleration information of the left foot；And left foot communication unit, what transmission was obtained by left foot acceleration transducer The xyz all directions acceleration information of the left foot；
Right crus of diaphragm monitoring device comprising: right crus of diaphragm acceleration transducer, the acceleration of right crus of diaphragm when detecting human body walking obtain The xyz all directions acceleration information of the right crus of diaphragm；And right crus of diaphragm communication unit, what transmission was obtained by right crus of diaphragm acceleration transducer The xyz all directions acceleration information of the right crus of diaphragm；And
Evaluating apparatus is balanced by any of the above-described kind of walking, receives and comes from the waist monitoring device, the left foot The xyz all directions acceleration information of the waist of monitoring device and the right crus of diaphragm monitoring device, left foot and right crus of diaphragm is gone Walk balance evaluation.
In addition, according to other aspects of the invention, providing a kind of wearable walking balance monitoring instrument, which is characterized in that use Balanced capacity when being worn on human body to monitor human body walking, the wearable walking balance monitoring instrument include:
Waist worn part, is intended to be worn in waist；
Waist monitoring device is fixed on waist worn part, and includes: waist acceleration transducer, detects human body row Waist acceleration when walking, and obtain the xyz all directions acceleration information of the waist；And waist communication module, send institute State the xyz all directions acceleration information of waist；
Left foot dresses part, is intended to be worn at left ankle；
Left foot monitoring device is fixed on left foot wearing part, and includes: left foot acceleration transducer, detects human body row Left foot acceleration when walking, and obtain the xyz all directions acceleration information of the left foot；And left foot communication module, send institute State the xyz all directions acceleration information of left foot；
Right crus of diaphragm dresses part, is intended to be worn at right ankle；
Right crus of diaphragm monitoring device is fixed on right crus of diaphragm wearing part, and includes: right crus of diaphragm acceleration transducer, detects human body row Right crus of diaphragm acceleration when walking, and obtain the xyz all directions acceleration information of the right crus of diaphragm；And right crus of diaphragm communication module, send institute State the xyz all directions acceleration information of right crus of diaphragm；
Wrist dresses part, is intended to be worn at wrist；And
Display device is fixed on wrist wearing part, and includes: communication module, receives the waist, left foot and the right side The xyz all directions acceleration information of foot；Processor, the xyz all directions based on the received waist, left foot and right crus of diaphragm add Speed data calculates human body walking balanced capacity value and display, shows the human body walking balanced capacity value,
Wherein, the processor
The xyz all directions acceleration information of the received waist, left foot and right crus of diaphragm is converted into the waist, a left side respectively The xyz all directions frequency spectrum data of foot and right crus of diaphragm, and the xyz all directions acceleration information of the left foot and right crus of diaphragm is pressed into all directions pair The xyz all directions superposition frequency spectrum data of left and right foot is converted into after should being superimposed respectively；
The xyz of the waist, left foot and right crus of diaphragm is decomposed from the xyz all directions frequency spectrum data of the waist, left foot and right crus of diaphragm The principal frequency component and harmonic component of all directions, the dominant frequency point of the xyz all directions based on the waist, left foot and the right crus of diaphragm decomposited Amount and harmonic component seek the percent harmonic distortion of the xyz all directions of the waist, left foot and right crus of diaphragm respectively, and are based on the waist The percent harmonic distortion of the xyz all directions in portion, left foot and right crus of diaphragm obtains synthesis percent harmonic distortion,
Xyz all directions frequency spectrum data based on the left foot and right crus of diaphragm calculates the frequency spectrum related coefficient between the left and right foot, The xyz all directions frequency spectrum data of xyz all directions superposition frequency spectrum data and the waist based on the left and right foot calculates the waist Frequency spectrum related coefficient between portion and the left and right foot, and based between the left and right foot frequency spectrum related coefficient and the waist and institute It states the frequency spectrum related coefficient between the foot of left and right and obtains synthesis related coefficient,
Being calculated based on the synthesis percent harmonic distortion and the synthesis related coefficient indicates that the balance of walking balanced capacity refers to It is denoted as the balanced capacity evaluation of estimate.
In accordance with the invention it is possible to balanced ability of human body is monitored in daily walking, the test without special scenes.
Detailed description of the invention
Fig. 1 is the schematic diagram for showing the collection point that total balance of the body data are obtained in human body walking.
Fig. 2 is the figure for the nine dimension acceleration informations that the collection point based on Fig. 1 obtains.
Fig. 3 is to show the schematic diagram decomposed respectively to the left and right foot motion frequency of normal person and mobility impaired.
Fig. 4 is the figure for showing the harmonic compensation effect of left and right foot.
Fig. 5 is the figure for showing the coordinating effect of left and right foot and waist.
Fig. 6 be show according to embodiments of the present invention 1 walking balance monitoring method flow diagram.
Fig. 7 be show according to embodiments of the present invention 1 walking balance monitoring system functional block diagram.
Fig. 8 be show according to embodiments of the present invention 1 evaluation unit functional block diagram.
Fig. 9 be show according to embodiments of the present invention 2 walking balance monitoring method flow diagram.
Figure 10 be show according to embodiments of the present invention 2 walking balance monitoring system functional block diagram.
Figure 11 be show according to embodiments of the present invention 2 evaluation unit functional block diagram.
Figure 12 be show according to embodiments of the present invention 3 walking balance monitoring method flow diagram.
Figure 13 be show according to embodiments of the present invention 3 walking balance monitoring system functional block diagram.
Figure 14 be show according to embodiments of the present invention 3 evaluation unit functional block diagram.
Figure 15 is the wearable human balance monitoring instrument for showing according to embodiments of the present invention 4 and its signal for dressing mode Figure.
Figure 16 is that waist, the left and right foot for the wearable human balance monitoring instrument for showing according to embodiments of the present invention 4 monitor dress It sets and the structural block diagram of display device.
Figure 17 is that the balanced ability of human body for the wearable human balance monitoring instrument for showing according to embodiments of the present invention 4 shows and shows The figure of example.
Specific embodiment
In the following, detailed description of the preferred embodiments referring to attached drawing.
The present inventor researchs and analyses the walking process of people repeatedly, and by research and experiment with keen determination, finder is in stabilization When ground is walked, human body waist, the movement of left and right lower limb are mutually coordinated, present on frequency spectrum between their acceleration of motion certain The characteristics of and correlation.In this regard, the present inventor by human body waist, this 3 points of left and right ankle as an example, made a concrete analysis of.
Fig. 1 is the schematic diagram for showing the collection point that total balance of the body data are obtained in human body walking.As shown in Figure 1, left and right Foot expresses the case where supporting surface, and waist is center of gravity position, is that the concentration of entire human body represents.
Here, human body waist is set as A point, left ankle is set as B point, and right ankle is set as C point, front-rear direction is set as the side x To left and right directions is set as the direction y and up and down direction is set as the direction z.It is also similarly set in the following description.Herein In the case of, by tri- points of ABC respectively in x, the acceleration information in tri- directions y, z is extracted, it will forms nine on time domain t Acceleration high-volume database is tieed up, as shown in Figure 2.
Spectrum analysis is carried out to acceleration information collected shown in Fig. 2.That is, acceleration information is cut into segment, it is right Each segment carries out Fourier transformation.As needed, such as take every 1024 data points for a window observation period.By window phase The acceleration degree series of every dimension carry out Fast Fourier Transform (FFT) (FFT), obtain the sequence of complex numbers that length is 1024, then to preceding 512 plural numbers carry out modular arithmetic, obtain mode sequence, can express the row of the relative intensity of different frequency ingredient from low to high Column.Following formula be to waist in the front-back direction acceleration carry out Fourier transformation example, can similarly carry out to other dimensions accelerate The transformation of degree.
The acceleration frequency spectrum of normal person and mobility impaired's different dimensions are made figure, carry out comparative studies repeatedly, this hair Bright people there has been the important discovery of three aspects.Below only with the vertical acceleration frequency spectrum of different points for example, other dimensions The case where also obey same rule.
A, the relationship of dominant frequency and harmonic wave
Here, the acceleration frequency spectrum of foot (direction z) in above-below direction is when being walked with normal person and mobility impaired or so Example is illustrated.Fig. 3 is to show the schematic diagram decomposed respectively to the left and right foot motion frequency of normal person and mobility impaired. In figure, the upper following figure in left side respectively illustrate normal person walking when or so acceleration frequency spectrum of the foot in the direction z, the upper following figure on right side Respectively illustrate mobility impaired walking when or so foot the direction z acceleration frequency spectrum.As shown in the left hand view of Fig. 3, normal person Left and right foot acceleration frequency decomposites several main frequencies, and dominant frequency is very clear, and the content of harmonic wave is seldom.In contrast, as right Shown in the figure of side, mobility impaired's dominant frequency will be obscured much, and harmonic content is more.
The present inventor surmises reason for that: the ability that normal person manipulates muscle is stronger, matching coordinative between muscle It is good, tremble few, it is not necessary to minor motion it is few.And mobility impaired then trembles on the contrary, will appear muscle in walking in a jumble, control System is difficult, when facing unbalance frequently, passively confusedly can go to adjust, and therefore, the ingredient of various harmonic waves all compares more.Therefore, to humorous The rejection ability of wave should be the important embodiment of balanced capacity.
B, the harmonic compensation effect of left and right foot
Here, the acceleration frequency spectrum of foot (direction z) in above-below direction is when being walked with normal person and mobility impaired or so Example is illustrated.Fig. 4 is the figure for showing the harmonic compensation effect of left and right foot.In figure, the figure in left side is sequentially shown from top to bottom The frequency that left foot is presented after the acceleration frequency spectrum in the direction z and two acceleration superpositions in the direction z, right crus of diaphragm when normal person walks Spectrum, the figure in left side sequentially show from top to bottom mobility impaired walk when left foot the direction z, right crus of diaphragm the direction z acceleration The frequency spectrum presented after frequency spectrum and two acceleration superpositions.As shown in figure 4, frequency spectrum and the left and right of the superposition acceleration of left and right foot The respective frequency spectrum of foot is compared, and is superimposed the frequency spectrum of acceleration and is simply summed it up not equal to two frequency spectrums, but had been superimposed The effect mutually compensated is produced in journey, other than dominant frequency is more prominent, secondary frequency weakens a lot or even disappears, and high order The ingredient of harmonic wave has also obtained obvious inhibition.The left hand view of the effect of normal person's reduction such as Fig. 4, it is fairly obvious, and obstacle of taking action Person's such as right part of flg, effect will be much weaker, and the two is distinguished than sharper.
The present inventor surmises reason for that: producing one in evolution in 1 years by the animal of foot movement walking The complementary coordination system is moved between kind of foot, in this way can preferably by the discrete conversion of motion to jolt of foot be body it is relatively steady and Humorous movement.Therefore left and right foot mutually compensates the important embodiment that the ability of reducing harmonics is balanced capacity.
C, the coordinating effect of left and right foot and waist
The movement of both feet drives the movement of waist and entire body, therefore, between waist and foot should there is a kind of accomplice under duress relationship. Here, the acceleration frequency spectrum of foot and waist (direction z) in above-below direction is when being walked with normal person and mobility impaired or so Example is illustrated.Fig. 5 is the figure for showing the coordinating effect of left and right foot and waist.In figure, the upper following figure in left side is respectively illustrated normally Acceleration of the foot in the direction z is superimposed the acceleration frequency spectrum of frequency spectrum and waist in the direction z, the upper following figure on right side when people walks or so Acceleration of the foot in the direction z is superimposed frequency spectrum and waist in the acceleration in the direction z when respectively illustrating mobility impaired's walking or so Spend frequency spectrum.As shown in figure 5, normal person or so foot superposition frequency spectrum and the waist frequency spectrum degree of correlation are high.The superposition of mobility impaired or so foot Frequency spectrum will be much lower with the waist frequency spectrum degree of correlation.
The present inventor surmises reason for that: normal person can be passed through by idea, the action edge of muscle and control power The movement of the movement progress waist of foot, waist can also have the ability to follow the rhythm and pace of moving things of foot completely, and harmony travels forward in phase.And it takes action Obstacle person's is unable to do what one wishes, is largely the ataxia of foot and waist, waist itself generate it is many it is unnecessary tremble, when When lacking of proper care violent, it will fall down.Therefore, the harmony of foot and waist, the degree of correlation of frequency spectrum are the important embodiments of balanced capacity.
Based on above discovery, present inventors have proposed the walking balanced capacity detection sides based on human body objective data Case.In the following, enumerating several embodiments, the present invention is described in detail.Obviously, embodiment described herein be for realizing A part of the embodiments of the present invention, rather than whole embodiments.Based on the embodiment of the present invention, those of ordinary skill in the art exist There is no every other embodiment obtained under the premise of creative work, all should belong to the scope of protection of the invention.In this hair It is not direct for related known function and with the present invention in order to enable the present invention is clearer in the explanation of bright embodiment Structure, the function of relationship, omission illustrate.
" walking ", which refers in addition to the walking of ordinary meaning, in this description and in the claims also includes It stands, run, the behaviors such as going up or down stairway.
Embodiment 1
The embodiment of the present invention 1 is the important embodiment of balanced capacity according to the rejection ability to harmonic wave, with percent harmonic distortion h The dynamic monitoring and evaluation of walking balanced capacity are carried out as evaluation index.Here, percent harmonic distortion is harmonic wave in expression frequency spectrum Content number, be all harmonic wave intensity root-mean-square valve and fundamental wave intensity ratio.
Embodiment according to the present invention 1 is illustrated below with reference to Fig. 6 to Fig. 8.In the present embodiment, specifically, will Forward direction is set as the direction+x, and left-hand is set as the direction+y, is set as the direction+z upwards, similarly sets in description below.
Fig. 6 be show according to embodiments of the present invention 1 walking balance monitoring method flow diagram.Fig. 6 the step of In S10, in monitored people walking, by being worn on waist A point, the acceleration sensing of left ankle B point and right ankle C point everywhere Device, the acceleration at real-time detection waist A point, left ankle B point and right ankle C point obtain 3 points of ABC of xyz all directions and accelerate Degree evidence.
Then, in step s 11, converted by time-frequency domain, 3 points of ABC of xyz all directions of acquisition are accelerated into degree According to frequency spectrum data is converted into respectively, obtaining 9 axis frequency spectrum datas, (frequency spectrum data in a direction of a test point is 1 number of axle According to).Here, using FFT Fast Fourier Transform (FFT) mode.Specifically, n data acceleration sequence { a } before interception t moment, into Row FFT Fast Fourier Transform (FFT) obtains the mode sequence { imabs (a) } that length is n/2.
In the present embodiment, time-frequency domain conversion is carried out using FFT Fast Fourier Transform (FFT), it is obvious that time domain-frequency Domain conversion regime is without being limited thereto, can also be using other conversion regimes.
Then, in step s 12, ask the xyz all directions of waist A, left foot B, right crus of diaphragm C every bit frequency spectrum data, i.e. on State the synthesis percent harmonic distortion of 9 axis frequency spectrum datas.Specifically, from the xyz all directions of waist A, left foot B and right crus of diaphragm C every bit Frequency spectrum data, each axis frequency spectrum data i.e. in 9 axis decompose the principal frequency component and harmonic component of the axis respectively, for example, with For waist A, the principal frequency component and harmonic component in the direction waist x are decomposited from the frequency spectrum data in the direction waist x, from the waist side y To frequency spectrum data decomposite the principal frequency component and harmonic component in the direction waist y, decomposite waist from the frequency spectrum data in the direction waist z The principal frequency component and harmonic component in the portion direction z.Equally, the frequency spectrum data of left and right foot B, C are also decomposed.Then, it is based on dividing The principal frequency component and harmonic component of each axis solved seek each axis percent harmonic distortion.By taking the direction waist x as an example, the direction waist x Percent harmonic distortion hAxIt is shown below.
Here the intensity of harmonic wave and fundamental wave is directly indicated with the modulus value after frequency-domain transform, it is contemplated that intensity here is Relative intensity concept can also carry out certain mathematical operation, such as power operation, to modulus value when necessary to express harmonic wave and base The intensity of wave, in this case, formula (1) will be adjusted accordingly.
Similarly obtain the percent harmonic distortion value of other 8 axis: hAy、hAz、hBx、hBy、hBz、hCx、hCy、hCz。
By the percent harmonic distortion weighted average of 9 axis, it is as follows that 9 axis synthesis percent harmonic distortion h can be obtained:
H=w1hAx+w2hAy+w3hAz,+w4hBx+w5hBy+w6hBz+w7hCx+w8hCy+w9hCz (2)
Here, the weighting coefficient w of each axisn(n is 1~9) may be the same or different, and size reaction is not coaxial humorous Significance level of the wave aberration rate in balanced capacity is estimated, can be according to different walking modes, for example hurry up, jog, is quiet vertical etc. It is adjusted.For example, regarding as under similar circumstances in each axis significance level, the weighting coefficient of every axis all takes 1/9.
Then in step s 13, evaluated according to the size of the value of the synthesis percent harmonic distortion h acquired in step s 12 Walking balanced capacity.Since synthesis percent harmonic distortion h and walking balanced capacity are negatively correlated, the value of percent harmonic distortion h is synthesized Smaller, evaluation walking balanced capacity is better, and the value for synthesizing percent harmonic distortion h is bigger, and evaluation walking balanced capacity is poorer.
In step S20, the evaluation result obtained by step S13 is exported.Such as, it may be considered that carry out the number of evaluation of estimate Word is shown or character property is shown or graphical display or their combination are shown, allows a viewer to identify.
Embodiment according to the present invention 1 can also provide a kind of walking balance monitoring system 1.In the following, in conjunction with Fig. 7, Fig. 8 According to embodiments of the present invention 1 walking balance monitoring system 1 is illustrated.Fig. 7 is the row for showing according to embodiments of the present invention 1 The functional block diagram of balance monitoring system 1 is walked, Fig. 8 is commenting in the walking balance monitoring system 1 for show according to embodiments of the present invention 1 The functional block diagram of valence unit 112.
As shown in fig. 7, walking balance monitoring system 1 includes evaluating apparatus 11, waist monitoring device 12, left foot monitoring device 13 and right crus of diaphragm monitoring device 14.
Waist monitoring device 12 includes: waist acceleration transducer 121, the acceleration of waist A point when detecting human body walking, Obtain the xyz all directions acceleration information of waist A point；And waist communication unit 122, it sends and passes through waist acceleration transducer The xyz all directions acceleration information of the 121 waist A points obtained (corresponding to waist transmission unit of the invention).
Left foot monitoring device 13 includes: left foot acceleration transducer 131, the acceleration of left foot B point when detecting human body walking, Obtain the xyz all directions acceleration information of left foot B point；And left foot communication unit 132, it sends and passes through left foot acceleration transducer The xyz all directions acceleration information of the 131 left foot B points obtained (corresponding to left foot transmission unit of the invention).
Right crus of diaphragm monitoring device 14 includes: right crus of diaphragm acceleration transducer 141, the acceleration of right crus of diaphragm C point when detecting human body walking, Obtain the xyz all directions acceleration information of right crus of diaphragm C point；And right crus of diaphragm communication unit 142, it sends and passes through right crus of diaphragm acceleration transducer The xyz all directions acceleration information of the 141 right crus of diaphragm C points obtained (corresponding to right crus of diaphragm transmission unit of the invention).
Evaluating apparatus 11 includes: communication unit 111, is received respectively by waist communication unit 122, left foot communication unit 132 and right crus of diaphragm communication unit 142 send waist A point, left foot B point and right crus of diaphragm C point xyz all directions acceleration information (corresponding to receiving unit of the invention)；Evaluation unit 112, waist A point, left foot B point and right crus of diaphragm C point based on acquisition Xyz all directions acceleration information evaluation walking balanced capacity；And output unit 113,112 pairs of walking balances of output evaluation unit The evaluation result that ability carries out.
As shown in figure 8, evaluation unit 112 includes: time-frequency domain converter section 1121, waist A, left foot B and right crus of diaphragm C is every The xyz all directions acceleration information of any is converted into frequency spectrum data respectively, obtains 9 axis frequency spectrum datas；Synthesize percent harmonic distortion meter Calculation portion 1122, from each axis frequency spectrum in the frequency spectrum data of the xyz all directions of waist A, left foot B and right crus of diaphragm C every bit, i.e. 9 axis Data decompose the principal frequency component and harmonic component of the axis, and principal frequency component and harmonic component based on each axis decomposited seek each axis Percent harmonic distortion hAx、hAy、hAz、hBx、hBy、hBz、hCx、hCy、hCz, and it is abnormal based on these 9 axis percent harmonic distortions acquisition synthesis harmonic wave Variability h；And evaluation section 1123, walking balanced capacity is evaluated according to synthesis percent harmonic distortion h.If the synthesis harmonic wave found out The value of aberration rate h is smaller, and the evaluation walking balanced capacity of evaluation section 1123 is better, and the value for synthesizing percent harmonic distortion h is bigger, evaluation The evaluation walking balanced capacity of portion 1123 is poorer.
It is monitored when carrying out walking balance monitoring using according to embodiments of the present invention 1 walking balance monitoring system 1 People dresses waist monitoring device 12, left foot monitoring device 13 and right crus of diaphragm prison respectively on waist and left and right foot position appropriate Normal walking in the case where survey device 14.Waist monitoring device 12, left foot monitoring device 13 and right crus of diaphragm monitoring device 14 are real-time The acceleration of waist, left foot and right crus of diaphragm when detecting human body walking, the xyz all directions for obtaining waist, left foot and right crus of diaphragm accelerate degree According to, and the data that these are measured are sent respectively to evaluating apparatus 11.Evaluating apparatus 11 is based on these waists, the left foot received And the xyz all directions acceleration information of right crus of diaphragm, calculate and export the walking balance evaluation result of monitored people.
The embodiment of the present invention 1 is applied to different measurands, 20 samples are employed herein.In addition, being related to closing The weighting coefficient w calculated at percent harmonic distortion hn(n be 1~9) is set as identical value, i.e., 1/9, in the case, obtain as Result shown in the following table 1.
Serial number 1 test object constitution is first-class in table, has deep love for moving, over the age 60.From the appearance point of view, what it was walked Gait and other normal persons do not see difference, and the value of the synthesis percent harmonic distortion h acquired with the present embodiment 1 is 8.7%,
[table 1]
Serial number 11 test objects are slight vertigo patients in table, illness more than 30 years, from the appearance point of view, it is walked The gait on road and normal person do not see difference, but the value of the synthesis percent harmonic distortion h acquired with the present embodiment 1 is 12.2%, phase To higher.
Serial number 20 test objects are severe paralytics in table, usually wheelchair, have walked one section reluctantly in test Road, he the case where belong to the critical state that can be walked and cannot walk, so synthesis percent harmonic distortion h value be 21.9%, before comparing It is two very high.
As shown in Table 1, the value of the synthesis percent harmonic distortion h of serial number 4 test objects is 8.2%, minimum, by this reality The monitoring for applying example 1 learns that the walking balanced capacity of No. 4 test objects is best.
The method of the above description of test, the present embodiment 1 can detecte out the case where not seeing visually really, being capable of appraiser Equilibrium state when body is walked.Embodiment according to the present invention 1, waist when due to need to only detect walking, 3 points of left and right foot plus Speed, and carry out walking balanced capacity using waist, 3 points of left and right foot of acceleration spectral characteristic and monitor, therefore can be with less Test point carry out walking balanced capacity automatic monitoring.To, testee is not necessarily to do required movement under specific scene, The balanced ability of human body under real situation is directly tested, monitoring normalization, the facilitation of balanced ability of human body are enabled to.
Embodiment according to the present invention 1, the present invention pass through the synthesis harmonic wave with waist, 3 points of left and right foot of acceleration frequency spectrum Aberration rate evaluates walking balanced capacity, direct indicator is extracted from complicated human body walking balance influence factor, so that commenting Valence model becomes simple and objective.
Thereby, it is possible to easily measure walking balanced capacity in real time based on human body objective data.
Embodiment 2
As the present inventor has found above, human body when walking, between the foot of left and right and left and right foot and waist it Between acceleration harmonic wave between have correlation properties, walking balance it is better, the degree of correlation between these acceleration harmonic waves is higher. The embodiment of the present invention 2 is according to the dynamic monitoring and evaluation for carrying out walking balanced capacity using correlation coefficient r as evaluation index.This In, correlation coefficient r expresses the degree of correlation of data sequence between out-of-alignment frequency spectrum.
Embodiment according to the present invention 2 is illustrated below with reference to Fig. 9 to Figure 11.Compared with Example 1, embodiment 2 The difference lies in that use left and right foot between and the acceleration harmonic wave between left and right foot and waist between related coefficient make For evaluation index.Therefore, in the following description, the step different from embodiment 1, structure are illustrated emphatically, and for Step same as Example 1, structure, are illustrated, and omit the description or be simply illustrated with identical symbol.
Fig. 9 be show according to embodiments of the present invention 2 walking balance monitoring method flow diagram.Wherein, acceleration Detection and evaluation result output it is same as Example 1, identical symbol S10, S20 are marked in Fig. 9.
As shown in figure 9, by being worn on waist A point, the acceleration transducer of left ankle B point and right ankle C point everywhere Acceleration at real-time detection waist A point, left ankle B point and right ankle C point obtains 3 points of ABC of xyz all directions and accelerates degree According to (S10).
Then, in the step s 21, in the same manner as step S11, by FFT Fast Fourier Transform (FFT), by the ABC tri- of acquisition The xyz all directions acceleration information of point is converted into frequency spectrum data respectively, obtains 9 axis frequency spectrum datas.In addition, by the xyz of BC two o'clock All directions acceleration information is then quick by superimposed xyz all directions acceleration information progress FFT by the corresponding superposition of all directions Fourier transformation obtains the xyz all directions superposition frequency spectrum data of left and right foot BC (referred to as xyz is superimposed frequency spectrum).
In step S22, the synthesis related coefficient between the acceleration frequency spectrum data of waist, left and right foot is calculated.This implementation In example, related coefficient can for example be acquired with the formula of correlation coefficient of standard, but not limited to this, art technology can also be used Other related coefficients well known to personnel seek mode.
First investigate the frequency spectrum related coefficient of three dimensions of B_C between the foot of left and right.
With the correlation coefficient r in the left and right direction foot xB_CxFor, then it is shown below.
Similarly obtain the correlation coefficient r in the direction left and right foot y, the direction zB_Cy、rB_Cz。
The related coefficient of waist A point Yu superimposed three dimensions of frequency spectrum of left and right foot BC point acceleration is investigated again.
With the correlation coefficient r of waist A point and the direction x for being superimposed frequency spectrum of left and right foot BC pointA_BCxFor, then such as following formula institute Show.
Similarly obtain the correlation coefficient r of waist A point and the direction y for being superimposed frequency spectrum of left and right foot BC point, the direction zA_BCy、rA_BCz。
Above-mentioned six correlation coefficient weighteds are averaged, it is as follows that synthesis correlation coefficient r can be obtained:
R=w10rB_Cx+w11rB_Cy+w12rB_Cz+w13rA_BCx+w14rA_BCy+w15rA_BCz (5)
Here, each weighting coefficient may be the same or different, and size reacts different between centers related coefficients in balance energy Power estimate in significance level, can be according to different walking modes, for example hurry up, jog, quiet vertical etc. being adjusted.In each between centers Significance level is regarded as under similar circumstances, and the weighting coefficient of every axis all takes 1/6.
Then in step S23, row is evaluated according to the size of the value of the synthesis correlation coefficient r acquired in step S22 Walk balanced capacity.Since synthesis correlation coefficient r and walking balanced capacity are positively correlated, the value for synthesizing correlation coefficient r is bigger, comments Valence is walked, and balanced capacity is better, and the value for synthesizing correlation coefficient r is smaller, and evaluation walking balanced capacity is poorer.
Embodiment according to the present invention 2 can also provide a kind of walking balance monitoring system 2.In the following, in conjunction with Figure 10, figure 11 pairs according to embodiments of the present invention 2 of walking balance monitoring system 2 is illustrated.Figure 10 is to show according to embodiments of the present invention 2 Walking balance monitoring system 2 functional block diagram, Figure 11 is the walking balance monitoring system 2 for showing according to embodiments of the present invention 2 In evaluation unit 212 functional block diagram.
As shown in Figure 10, walking balance monitoring system 2 includes evaluating apparatus 21, waist monitoring device 12, left foot monitoring dress Set 13 and right crus of diaphragm monitoring device 14.Wherein, evaluating apparatus 21 includes: that communication unit 111, evaluation unit 212 and output are single Member 113.Wherein, waist monitoring device 12, left foot monitoring device 13 and right crus of diaphragm monitoring device 14, the communication in evaluating apparatus 21 The composition and function and the respective members in embodiment 1 of unit 111 and output unit 113 are identical or essentially identical, therefore use Identical symbol is indicated and is omitted the description.Here, only detailed to the evaluation unit 212 in the evaluating apparatus 21 different from embodiment 1 It describes in detail bright.
As shown in figure 11, evaluation unit 212 includes: time-frequency domain converter section 2121, and waist A, left foot B and right crus of diaphragm C is every The xyz all directions acceleration information of any is converted into frequency spectrum data respectively, obtains 9 axis frequency spectrum datas, and by left foot B and right crus of diaphragm The xyz all directions acceleration information of C is superimposed spectrum number by the xyz all directions for being converted into left and right foot after the corresponding superposition of all directions respectively According to；Related coefficient calculation part 2122 is synthesized, the frequency spectrum data of the xyz all directions based on left foot B and right crus of diaphragm C calculates between the foot of left and right Frequency spectrum correlation coefficient rB_Cx、rB_Cy、rB_Cz, the xyz each side of xyz all directions superposition frequency spectrum data and waist based on left and right foot BC The frequency spectrum correlation coefficient r between waist A and left and right foot BC is calculated to frequency spectrum dataA_BCx、rA_BCy、rA_BCz, and it is based on these 6 phases Relationship number obtains synthesis correlation coefficient r；And evaluation section 2123, walking balance is evaluated according to the synthesis correlation coefficient r acquired Ability.If the value of the synthesis correlation coefficient r acquired is bigger, the evaluation walking balanced capacity of evaluation section 2123 is better, synthesizes phase The value of relationship number r is smaller, and the evaluation walking balanced capacity of evaluation section 2123 is poorer.
The embodiment of the present invention 2 is applied to different measurands, 20 samples same as Example 1 are employed herein This.In addition, being related to synthesizing the weighting coefficient w that correlation coefficient r calculatesn(n is 10~15) is set as identical value, i.e., 1/6.In this feelings Under condition, result as shown in table 2 below is obtained.
Serial number 1 test object constitution is first-class in table, has deep love for moving, over the age 60, from the appearance point of view, what it was walked Gait and other normal persons do not see difference, and the value of the synthesis correlation coefficient r acquired with the present embodiment 2 is 0.90.
Serial number 11 test objects are slight vertigo patients in table, illness more than 30 years, from the appearance point of view, it is walked The gait on road and normal person do not see difference, but the value of the synthesis correlation coefficient r acquired with the present embodiment 2 is 0.78, relatively partially It is low.
Serial number 20 test objects are severe paralytics in table, usually wheelchair, have walked one section reluctantly in test Road, he the case where belong to the critical state that can be walked and cannot walk, so synthesis correlation coefficient r value be 0.58, compare the first two It is very low.
As shown in Table 2, the value 0.90 of the synthesis correlation coefficient r of serial number No. 1 and No. 3 test object is highest, passes through this The monitoring of embodiment 1 learns that the walking balanced capacity of this No. 1 and No. 3 test object is best.
[table 2]
The method of the above description of test, the present embodiment 2 can detecte out the case where not seeing visually really, being capable of appraiser Equilibrium state when body is walked.
Embodiment according to the present invention 2, waist, 3 points of left and right foot of acceleration when due to need to only detect walking, and utilize Waist, 3 points of left and right foot of acceleration spectral characteristic carry out walking balanced capacity monitoring, therefore can be clicked through with less detection Every trade walks the automatic monitoring of balanced capacity.To which testee under specific scene without doing required movement, and directly test is true Balanced ability of human body under truth scape enables to monitoring normalization, the facilitation of balanced ability of human body.
Embodiment according to the present invention 2, the present invention pass through related with the synthesis of waist, 3 points of left and right foot of acceleration frequency spectrum Coefficient evaluates walking balanced capacity, extracts direct indicator from complicated human body walking balance influence factor, so that evaluation Model becomes simple and objective.
Thereby, it is possible to easily measure walking balanced capacity in real time based on human body objective data.
Embodiment 3
Above-described embodiment 1 and embodiment 2 are to carry out walking balance evaluation, and two used with different evaluation indexes Index percent harmonic distortion and related coefficient are relatively independent indexs, and the experimental data of more above-mentioned Tables 1 and 2 is not difficult to find out, The trend of the evaluation result of the two is almost the same, illustrates balanced capacity when all preferably embodying human body walking, but the two it Between also slightly have differences, this evaluation both shown is that human body walking balanced capacity is reflected in terms of different.In addition, due to The two indexs belong to professional index, not easy-to-understand enough.Therefore, the present inventor expect integrating the two evaluation indexes carry out it is comprehensive The method for closing evaluation.The embodiment of the present invention 3 is exactly to be gone using percent harmonic distortion h and correlation coefficient r synthesis as evaluation index Walk the dynamic monitoring and evaluation of balanced capacity.
Embodiment according to the present invention 3 is illustrated below with reference to Figure 12 to Figure 14.With embodiment 1,2 phase of embodiment Than, embodiment 3 the difference lies in that proposing the correlation coefficient r of the percent harmonic distortion h and embodiment 2 that combine embodiment 1 The concept of equilibrium index I, and using equilibrium index I as evaluation index.Therefore, in the following description, emphatically to implementation The different step of example 1, embodiment 2, structure are illustrated, and for the step identical as embodiment 1, embodiment 2, structure, with Identical symbol is illustrated, and is omitted the description or be simply illustrated.
Figure 12 be show according to embodiments of the present invention 3 walking balance monitoring method flow diagram.Wherein, acceleration Detection and evaluation result output it is identical as embodiment 1, embodiment 2, identical symbol S10, S20 are marked in Figure 12.
As shown in figure 12, by being worn on waist A point, the acceleration transducer of left ankle B point and right ankle C point everywhere Acceleration at real-time detection waist A point, left ankle B point and right ankle C point obtains 3 points of ABC of xyz all directions and accelerates degree According to (S10).
Then, in step S31, in the same manner as step S21, by FFT Fast Fourier Transform (FFT), by the ABC tri- of acquisition The xyz all directions acceleration information of point is converted into frequency spectrum data respectively, obtains 9 axis frequency spectrum datas.In addition, by the xyz of BC two o'clock All directions acceleration information is then quick by superimposed xyz all directions acceleration information progress FFT by the corresponding superposition of all directions Fourier transformation, the xyz all directions for obtaining left and right foot BC are superimposed frequency spectrum data.
In step s 32, frequency spectrum data, i.e. above-mentioned 9 axis of the xyz all directions of waist A, left foot B and right crus of diaphragm C every bit are asked The synthesis percent harmonic distortion h of frequency spectrum data.Specific calculating is identical as the step S11 of embodiment 1, and which is not described herein again.
Then, it in step S33, is calculated based on the xyz all directions of 9 axis frequency spectrum datas and left and right foot superposition frequency spectrum data The synthesis correlation coefficient r of waist A, left foot B and right crus of diaphragm C, specific calculating is identical as the step S22 of embodiment 2, no longer superfluous here It states.
Then in step 34, based on the above-mentioned synthesis percent harmonic distortion h acquired and synthesis correlation coefficient r, pass through following formula (6) calculated equilibrium index I.Here, the present inventor designs equilibrium index I using logical function, is one 0 by rating result conversion ~100 score value, wherein percent harmonic distortion and equilibrium index are negatively correlated, and related coefficient and equilibrium index are positively correlated.Equilibrium index Score, i.e. evaluation of estimate it is higher, show that balanced capacity is better.
Here, k1、k2Reflect the aforementioned different evaluation weight respectively shared when converting equilibrium index score value, is also equal to each The highest score that self-evaluation may obtain, k1With k2The sum of be equal to 100.a1、b1、a2、b2Parameter can adjust percent harmonic distortion with Sensitivity and value interval of the related coefficient when converting equilibrium index score value can be adjusted (ratio according to a large amount of actual measurement samplings Such as a1=3, b1=17, a2=9, b2=13), there is no unique correctly solutions.Parameter value will affect the conversion of equilibrium index score value When be that leniently or as strict as possible, generally will not influence the relative order of different measurement object balanced capacities.
According to the calculated result of step S34, evaluation result is exported in step S20, such as exports the equilibrium index I of calculating Value.
Embodiment according to the present invention 3 can also provide a kind of walking balance monitoring system 3.In the following, in conjunction with Figure 13, figure 14 pairs according to embodiments of the present invention 3 of walking balance monitoring system 3 is illustrated.Figure 13 is to show according to embodiments of the present invention 3 Walking balance monitoring system 3 functional block diagram, Figure 14 is the walking balance monitoring system 3 for showing according to embodiments of the present invention 3 In evaluation unit 312 functional block diagram.
As shown in figure 13, walking balance monitoring system 3 includes evaluating apparatus 31, waist monitoring device 12, left foot monitoring dress Set 13 and right crus of diaphragm monitoring device 14.Wherein, evaluating apparatus 31 includes: that communication unit 111, evaluation unit 312 and output are single Member 113.Wherein, waist monitoring device 12, left foot monitoring device 13 and right crus of diaphragm monitoring device 14, the communication in evaluating apparatus 31 The composition and function of unit 111 and output unit 113 and the respective members in embodiment 1, embodiment 2 are identical or essentially identical, Therefore it indicates and omits the description using identical symbol.Here, only in the evaluating apparatus 31 different from embodiment 1, embodiment 2 Evaluation unit 312 be described in detail.
As shown in figure 14, evaluation unit 312 includes: time-frequency domain converter section 3121, and waist A, left foot B and right crus of diaphragm C is every The xyz all directions acceleration information of any is converted into frequency spectrum data respectively, obtains 9 axis frequency spectrum datas, and by left foot B and right crus of diaphragm The xyz all directions acceleration information of C is superimposed spectrum number by the xyz all directions for being converted into left and right foot after the corresponding superposition of all directions respectively According to；Synthesize percent harmonic distortion calculation part 3122, from the frequency spectrum datas of the xyz all directions of waist A, left foot B and right crus of diaphragm C every bit, That is each axis frequency spectrum data in 9 axis decomposes the principal frequency component and harmonic component of the axis, the dominant frequency based on each axis decomposited point Amount and harmonic component seek each axis percent harmonic distortion hAx、hAy、hAz、hBx、hBy、hBz、hCx、hCy、hCz, and it is based on these 9 axis harmonic waves Aberration rate obtains synthesis percent harmonic distortion h；Synthesize related coefficient calculation part 3123, the xyz all directions based on left foot B and right crus of diaphragm C Frequency spectrum data calculates the frequency spectrum correlation coefficient r between left and right foot BCB_Cx、rB_Cy、rB_Cz, the xyz all directions superposition based on left and right foot BC The xyz all directions frequency spectrum data of frequency spectrum data and waist calculates the frequency spectrum correlation coefficient r between waist A and left and right foot BCA_BCx、 rA_BCy、rA_BCz, and synthesis correlation coefficient r is obtained based on these 6 related coefficients；And evaluation section 3124, according to the conjunction acquired Equilibrium index I is acquired as evaluation of estimate at percent harmonic distortion h and synthesis correlation coefficient r.The score of equilibrium index I is higher, shows Balanced capacity is better.
The embodiment of the present invention 3 is applied to different measurands, is employed herein identical as embodiment 1, embodiment 2 20 samples.In addition, being related to synthesizing the weighting coefficient w that percent harmonic distortion h is calculatedn(n is 1~9) is set as identical value, i.e., 1/ 9, it is related to synthesizing the weighting coefficient w that correlation coefficient r calculatesn(n is 10~15) is set as identical value, i.e., 1/6, and is related to balancing The coefficient k that index I is calculated1=k2=50, a1=3, b1=17, a2=9, b2=13.In the case, it obtains such as the following table 3 institute The result shown.
Serial number 1 test object constitution is first-class in table, has deep love for moving, over the age 60, from the appearance point of view, what it was walked Gait and other normal persons do not see difference, and the equilibrium index I acquired with the present embodiment 3 is scored at 88 points.
[table 3]
Serial number 11 test objects are slight vertigo patients in table, illness more than 30 years, from the appearance point of view, it is walked The gait on road and normal person do not see difference, but the equilibrium index I acquired with the present embodiment 3 is scored at 73 points, relatively relatively low.
Serial number 20 test objects are severe paralytics in table, usually wheelchair, have walked one section reluctantly in test Road, he the case where belong to the critical state that can be walked and cannot walk, so the equilibrium index I acquired with the present embodiment 3 is scored at It is 26 points, very low compared to the first two.
The method of the above description of test, the present embodiment 3 can detecte out the case where not seeing visually really, being capable of appraiser Equilibrium state when body is walked.
Embodiment according to the present invention 3, other than technical effect identical with embodiment 1, embodiment 2, additionally it is possible to obtain Obtain following effects.
Embodiment according to the present invention 3, due to by the synthesis percent harmonic distortion of the acceleration frequency spectrum data of waist, left and right foot H and synthesis correlation coefficient r synthesis are used as evaluation index I, thus from it is different it is independent in terms of reflect human body walking when balance Ability can more accurately embody walking balanced capacity.
In addition, embodiment according to the present invention 3, by using logical function by the value conversion of evaluation index I for one 0~ 100 score value, so that evaluation result is more intuitive, it is easy-to-understand.
Embodiment 4
Embodiment according to the present invention 4 provides a kind of wearable human balance monitoring instrument.The wearable human balance monitoring Instrument is the specific device example of the embodiment of the present invention 3.The wearable human balance monitoring instrument of the present embodiment 4 is only as specific implementation The example of mode, those skilled in the art understand, the present invention can in various ways, the form of various devices realize.
In the following, being illustrated according to Figure 15-Figure 17 to according to embodiments of the present invention 4 wearable human balance monitoring instrument 4.
Figure 15 is the wearable human balance monitoring instrument for showing according to embodiments of the present invention 4 and its signal for dressing mode Figure, Figure 16 be the waist of wearable human balance monitoring instrument for showing according to embodiments of the present invention 4, left and right foot monitoring device and The structural block diagram of display device.
As shown in figure 15, the wearing of wearable human balance monitoring instrument 4 physically uses.The wearable human balance monitoring Instrument 4 includes: waist worn part 41, is intended to be worn in waist；Waist monitoring device 42 is fixed on waist worn part 41；Left foot Part 43 is dressed, is intended to be worn at left ankle；Left foot monitoring device 44 is fixed on left foot wearing part 43；Right crus of diaphragm dresses part 45, It is intended to be worn at left ankle；Right crus of diaphragm monitoring device 46 is fixed on right crus of diaphragm wearing part 45；Wrist dresses part 47, is intended to be worn in At wrist, display device 48 is fixed on wrist wearing part 47.
The fixing piece on clothing that waist worn part 41, which can be arbitrary, can be fixed to human body waist or people is worn, Such as can be bandage, waistband, velcro etc., to be dressed by the modes such as tying up, being, paste.
Left and right wear wear part 43,45 can be arbitrary can be fixed to leg, here concrete example be ankle at or people The fixing piece on clothing worn, such as can be bandage, foot ring, velcro etc., thus by tying up, being, detaining, pasting Mode is dressed.
Wrist wearing part 47, which can be arbitrary, can be fixed to arm, and concrete example is by wrist or people wears here Clothing on fixing piece, such as can be bandage, bracelet, velcro, pocket etc., thus by tying up, being, detaining, gluing The modes such as patch, placement are dressed.
Here, it is worn with waist worn part 41, left and right and wears part 43,45 as bandage, wrist dresses part 47 as bracelet.
As shown in figure 16, waist monitoring device 42 includes waist acceleration transducer 421 and waist communication module 422.Waist The acceleration of waist, obtains the xyz all directions acceleration information of waist when portion's acceleration transducer 421 detects human body walking.Waist The xyz all directions acceleration information of the waist obtained by waist acceleration transducer 421 is sent to aobvious by portion's communication module 422 Showing device 48.
Left foot monitoring device 44 includes left foot acceleration transducer 441 and left foot communication module 442.Left foot acceleration sensing The acceleration of left foot, obtains the xyz all directions acceleration information of left foot when device 421 detects human body walking.Left foot communication module 442 The xyz all directions acceleration information of the left foot obtained by left foot acceleration transducer 441 is sent to display device 48.
Right crus of diaphragm monitoring device 46 includes right crus of diaphragm acceleration transducer 461 and right crus of diaphragm communication module 462.Right crus of diaphragm acceleration sensing The acceleration of right crus of diaphragm, obtains the xyz all directions acceleration information of right crus of diaphragm when device 461 detects human body walking.Right crus of diaphragm communication module 462 The xyz all directions acceleration information of the right crus of diaphragm obtained by right crus of diaphragm acceleration transducer 441 is sent to display device 48.
Display device 48 includes communication module 481, processor 482 and display 483.Communication module 481 receives difference By the xyz of waist, left foot and right crus of diaphragm that waist communication module 422, left foot communication module 442, right crus of diaphragm communication module 462 are sent All directions acceleration information is passed along processor 482.Processor 482 based on from communication module 481 waist, left foot with And the xyz all directions acceleration information of right crus of diaphragm evaluates human body walking balanced capacity.483 video-stream processor 482 of display is evaluated Human body walking balanced capacity.Xyz all directions acceleration information appraiser of the processor 482 based on waist, left foot and right crus of diaphragm The process of body walking balanced capacity is identical as the evaluation method of embodiment 3, therefore which is not described herein again.
Here, waist acceleration transducer, left foot acceleration transducer and right crus of diaphragm acceleration transducer can be used logical 3-axis acceleration sensor, six-axle acceleration sensor, nine axle accelerations can be used for example in normal acceleration transducer Any one in sensor.
Waist communication module, left foot communication module and right crus of diaphragm communication module, which can be used, is able to carry out the logical of wireless communication Believe module, such as bluetooth communication, radio-frequency module etc..
Figure 17 is that the balanced ability of human body for the wearable human balance monitoring instrument for showing according to embodiments of the present invention 4 shows and shows The figure of example.As shown in figure 17, it can show the specific score value at certain moment, can also show the reality of balanced capacity value in walking simultaneously When curve, to can not only know current balanced capacity, but also balanced capacity variation can be monitored.
More than, several embodiments of the invention are illustrated.
In the present invention, as long as evaluating apparatus has the equipment of data receiver function, calculation function and output function i.e. Can, it is not particularly limited.For example, it may be the portable equipments such as PC machine, mobile phone, tablet computer, have receive, operation and display function Bracelet etc..
The printing that heretofore described output for example can be the display of text and/or image, text and/or image is defeated Out, sound output or their combination etc..
In an embodiment of the present invention, the example that waist monitoring device is worn on waist is shown, still, waist monitoring Device can also be worn on other positions, as long as being able to detect that the acceleration of waist when human body walking, preferably be worn on The central location of Attacking Midfielder or low back.
In an embodiment of the present invention, it shows left foot monitoring device and right crus of diaphragm monitoring device is worn on left and right ankle Example, still, left foot monitoring device and right crus of diaphragm monitoring device can be worn on any part of left and right lower limb, as long as being able to detect The acceleration of lower limb when to human body walking or so, such as can also be worn on foot or the positions such as shank, thigh.Separately Outside, it also may be mounted on shoes, insole, socks, foot ring etc..
In the embodiment of the present invention 4, waist monitoring device is dressed by waistband, left foot monitoring device and right crus of diaphragm prison Surveying device is to be dressed by foot ring, but it is without being limited thereto to dress mode, as long as can be fixed to above-mentioned each device on human body i.e. Can, such as can also be dressed using being pasted by stickers such as velcro or adhesive plasters.
Those skilled in the art cans understand the content of the present invention and implement it accordingly, and can not limit the present invention with this Protection scope.Equivalent changes or modifications made by all Spirit Essences according to the present invention should all cover in protection of the invention Within the scope of.
In the present specification, although the embodiments of the invention are described in conjunction with the attached drawings, but those skilled in the art can To make various modifications and deformation without departing from the spirit and scope of the present invention, such modification and variation are each fallen within Within the claim limited range.

Claims (12)

1. a kind of walking balance evaluation method, which is characterized in that front-rear direction is being denoted as the direction x, left and right directions is denoted as the side y To in the case that up and down direction is denoted as the direction z, comprising:
Receiving step receives adding for the waist of body when passing through acceleration transducer real-time detection human body walking, left foot and right crus of diaphragm Speed and the xyz all directions acceleration information of the waist, left foot and right crus of diaphragm obtained；
Time-frequency domain switch process turns the xyz all directions acceleration information of the received waist, left foot and right crus of diaphragm respectively It changes the xyz all directions frequency spectrum data of the waist, left foot and right crus of diaphragm into, and the xyz all directions of the left foot and right crus of diaphragm is accelerated Degree is superimposed frequency spectrum data according to by the xyz all directions for being converted into left and right foot after the corresponding superposition of all directions respectively；
Frequency spectrum correlation calculations step, based between the xyz all directions frequency spectrum data of the left foot and right crus of diaphragm calculating left and right foot Frequency spectrum related coefficient, based on the left and right foot xyz all directions superposition frequency spectrum data and the waist xyz all directions frequency spectrum Data calculate the frequency spectrum related coefficient between the waist and the left and right foot, and based on the frequency spectrum related coefficient between the left and right foot Frequency spectrum related coefficient between the waist and the left and right foot obtains synthesis related coefficient；
Evaluation procedure evaluates walking balanced capacity according to the synthesis related coefficient；And
Step is exported, the result evaluated by the evaluation procedure is exported.
2. walking balance evaluation method according to claim 1, which is characterized in that
In the evaluation procedure, the value of the synthesis related coefficient is bigger, and evaluation walking balanced capacity is better.
3. walking balance evaluation method according to claim 1, which is characterized in that further include:
Synthesize percent harmonic distortion calculate step, from the waist, left foot and right crus of diaphragm each xyz all directions frequency spectrum data difference It decomposes principal frequency component and harmonic component, principal frequency component and harmonic component based on each frequency spectrum data decomposited seeks each spectrum number According to percent harmonic distortion, and based on the waist, left foot and right crus of diaphragm each xyz all directions percent harmonic distortion obtain synthesis it is humorous Wave aberration rate；
Wherein, in the evaluation procedure, walking is evaluated according to the synthesis percent harmonic distortion and the synthesis related coefficient Balanced capacity.
4. walking balance evaluation method according to claim 3, which is characterized in that
In the evaluation procedure, the value of the synthesis percent harmonic distortion is smaller, and the value of the synthesis related coefficient is bigger, evaluation Balanced capacity of walking is better.
5. a kind of walking balance monitoring method, which is characterized in that front-rear direction is being denoted as the direction x, left and right directions is denoted as the side y To in the case that up and down direction is denoted as the direction z, comprising:
Detecting step, the waist of body when distinguishing real-time detection human body walking by acceleration transducer, left foot and right crus of diaphragm plus Speed obtains the xyz all directions acceleration information of the waist, left foot and right crus of diaphragm；And
Sending step sends the xyz all directions acceleration information of the waist, left foot and right crus of diaphragm,
Wherein, the walking balance monitoring method balances evaluation side by the walking described in any one of Claims 1-4 Method carries out walking balance evaluation.
6. a kind of walking balances evaluating apparatus, which is characterized in that front-rear direction is being denoted as the direction x, left and right directions is denoted as the side y To in the case that up and down direction is denoted as the direction z, comprising:
Receiving unit receives the waist of body when passing through acceleration transducer real-time detection human body walking, left foot and right crus of diaphragm Acceleration and the xyz all directions acceleration information obtained；
Time-frequency domain converter section converts the xyz all directions acceleration information of the received waist, left foot and right crus of diaphragm respectively At the xyz all directions frequency spectrum data of the waist, left foot and right crus of diaphragm, and by the xyz all directions acceleration of the left foot and right crus of diaphragm Data are superimposed frequency spectrum data by the xyz all directions for being converted into left and right foot after the corresponding superposition of all directions respectively；
Frequency spectrum correlation calculations portion, the xyz all directions frequency spectrum data based on the left foot and right crus of diaphragm calculate between the left and right foot Frequency spectrum related coefficient, the xyz all directions spectrum number of xyz all directions superposition frequency spectrum data and the waist based on the left and right foot According to the frequency spectrum related coefficient calculated between the waist and the left and right foot, and based between the left and right foot frequency spectrum related coefficient and Frequency spectrum related coefficient between the waist and the left and right foot obtains synthesis related coefficient；
Evaluation section evaluates walking balanced capacity according to the synthesis related coefficient；And
Output unit exports the result evaluated by the evaluation section.
7. walking according to claim 6 balances evaluating apparatus, which is characterized in that
The value of the synthesis related coefficient is bigger, and the evaluation section evaluation walking balanced capacity is better.
8. walking according to claim 6 balances evaluating apparatus, which is characterized in that further include:
Percent harmonic distortion calculation part is synthesized, decomposes the waist from the xyz all directions frequency spectrum data of the waist, left foot and right crus of diaphragm The principal frequency component and harmonic component of the xyz all directions in portion, left foot and right crus of diaphragm, based on the waist, left foot and the right crus of diaphragm decomposited Xyz all directions principal frequency component and the harmonic component xyz all directions of seeking the waist, left foot and right crus of diaphragm respectively harmonic wave it is abnormal Variability, and the percent harmonic distortion of the xyz all directions based on the waist, left foot and right crus of diaphragm obtains synthesis percent harmonic distortion；
Wherein, the evaluation section evaluates walking balance energy according to the synthesis percent harmonic distortion and the synthesis related coefficient Power.
9. walking according to claim 8 balances evaluating apparatus, which is characterized in that
The value of the synthesis percent harmonic distortion is smaller, and the value of the synthesis related coefficient is bigger, and the evaluation section evaluation walking is flat Weighing apparatus ability is better.
10. a kind of walking balance monitoring system characterized by comprising
Waist monitoring device comprising: waist acceleration transducer, the acceleration of waist when detecting human body walking, described in acquisition The xyz all directions acceleration information of waist；And waist communication unit, transmission are obtained described by waist acceleration transducer The xyz all directions acceleration information of waist；
Left foot monitoring device comprising: left foot acceleration transducer, the acceleration of left foot when detecting human body walking, described in acquisition The xyz all directions acceleration information of left foot；And left foot communication unit, transmission are obtained described by left foot acceleration transducer The xyz all directions acceleration information of left foot；
Right crus of diaphragm monitoring device comprising: right crus of diaphragm acceleration transducer, the acceleration of right crus of diaphragm when detecting human body walking, described in acquisition The xyz all directions acceleration information of right crus of diaphragm；And right crus of diaphragm communication unit, transmission are obtained described by right crus of diaphragm acceleration transducer The xyz all directions acceleration information of right crus of diaphragm；And
Walking described in any one of claim 6 to 9 balances evaluating apparatus, receives and comes from the waist monitoring device, institute State the xyz all directions acceleration information of the waist of left foot monitoring device and the right crus of diaphragm monitoring device, left foot and right crus of diaphragm Carry out walking balance evaluation.
11. walking balance monitoring system according to claim 10, which is characterized in that
The waist monitoring device is worn on human body waist,
The left foot monitoring device is worn on any position in left thigh, left leg, left ankle and left foot, or is mounted on On any of shoes, insole, socks, foot ring；
The right crus of diaphragm monitoring device is worn on any position in right thigh, right leg, right ankle and right crus of diaphragm, or is mounted on On any of shoes, insole, socks, foot ring.
12. a kind of wearable walking balance monitoring instrument, which is characterized in that be intended to be worn on human body when monitoring human body walking Balanced capacity, the wearable walking balance monitoring instrument include:
Waist worn part, is intended to be worn in waist；
Waist monitoring device is fixed on waist worn part, and includes: waist acceleration transducer, when detecting human body walking Waist acceleration, and obtain the xyz all directions acceleration information of the waist；And waist communication module, send the waist The xyz all directions acceleration information in portion；
Left foot dresses part, is intended to be worn at left ankle；
Left foot monitoring device is fixed on left foot wearing part, and includes: left foot acceleration transducer, when detecting human body walking Left foot acceleration, and obtain the xyz all directions acceleration information of the left foot；And left foot communication module, send the left side The xyz all directions acceleration information of foot；
Right crus of diaphragm dresses part, is intended to be worn at right ankle；
Right crus of diaphragm monitoring device is fixed on right crus of diaphragm wearing part, and includes: right crus of diaphragm acceleration transducer, when detecting human body walking Right crus of diaphragm acceleration, and obtain the xyz all directions acceleration information of the right crus of diaphragm；And right crus of diaphragm communication module, send the right side The xyz all directions acceleration information of foot；
Wrist dresses part, is intended to be worn at wrist；And
Display device is fixed on wrist wearing part, and includes: communication module, receives the waist, left foot and right crus of diaphragm Xyz all directions acceleration information；Processor, the xyz all directions acceleration based on the received waist, left foot and right crus of diaphragm Data calculate human body walking balanced capacity value and display, show the human body walking balanced capacity value,
Wherein, the xyz all directions acceleration information of the received waist, left foot and right crus of diaphragm is converted by the processor respectively The xyz all directions frequency spectrum data of the waist, left foot and right crus of diaphragm, and the xyz all directions of the left foot and right crus of diaphragm are accelerated into degree Frequency spectrum data is superimposed according to by the xyz all directions for being converted into left and right foot after the corresponding superposition of all directions respectively；
The xyz each side of the waist, left foot and right crus of diaphragm is decomposed from the xyz all directions frequency spectrum data of the waist, left foot and right crus of diaphragm To principal frequency component and harmonic component, the principal frequency component of the xyz all directions based on the waist, left foot and the right crus of diaphragm decomposited and Harmonic component seeks the percent harmonic distortion of the xyz all directions of the waist, left foot and right crus of diaphragm respectively, and is based on the waist, a left side The percent harmonic distortion of the xyz all directions of foot and right crus of diaphragm obtains synthesis percent harmonic distortion,
Xyz all directions frequency spectrum data based on the left foot and right crus of diaphragm calculates the frequency spectrum related coefficient between the left and right foot, is based on The xyz all directions superposition frequency spectrum data of the left and right foot and the xyz all directions frequency spectrum data of the waist calculate the waist with Frequency spectrum related coefficient between the left and right foot, and based between the left and right foot frequency spectrum related coefficient and the waist and the left side Frequency spectrum related coefficient between right crus of diaphragm obtains synthesis related coefficient,
Being calculated based on the synthesis percent harmonic distortion and the synthesis related coefficient indicates that the balance index of walking balanced capacity is made For the balanced capacity evaluation of estimate.
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