CN114271578B - Intelligent shoe capable of detecting step confusion and detection method - Google Patents
Intelligent shoe capable of detecting step confusion and detection method Download PDFInfo
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Abstract
The invention discloses an intelligent shoe capable of detecting step confusion and a detection method thereof, wherein the method for detecting the step confusion comprises the following steps: calculating a step consistency value according to the left foot parameter information and the right foot parameter information; calculating a foot step force rationality value according to the force foot information; calculating a foot step alternation rule value according to the left foot and right foot touch information; and calculating a step standard value according to the step consistency value and/or the step power rationality value and/or the step alternation rule value, and judging whether the steps are disordered or not according to the step standard value. The invention solves the problem of how to detect the confusion of the footsteps so as to effectively remind personnel to avoid falling.
Description
Technical Field
The invention belongs to the technical field of intelligent shoes, and particularly relates to an intelligent shoe capable of detecting step confusion and a detection method.
Background
Falls are extremely harmful to the human body, and can even endanger life especially for middle-aged and elderly people. An important human sign before a fall is the beginning of the confusion of the footsteps. Regarding related technologies for detecting falls, for example, a method proposed in chinese patent publication No. CN106529418B, "a fall detection and alarm method", includes: 1) When a person under guardianship walks, a visual information acquisition module worn on the person under guardianship is utilized to acquire video images; the visual information acquisition module is fixed so that the visual information acquisition module is approximately directed to a shooting surface positioned in the same direction when a monitored person walks normally; 2) Monitoring whether adjacent images in a preset time window are similar or not, and judging whether the monitored person falls down or not according to whether adjacent images are dissimilar continuously in the time window or not. The Chinese patent with publication number of CN109830086A (a single-chip microcomputer-based fall detection system for old people in walking state) proposes that the detection system comprises a single-chip microcomputer processing module, an inertial sensor module, a GPS (global positioning system) positioning module, a GPRS (general packet radio service) communication module, a pressure sensor module and a power supply module; the inertial sensor module is arranged at the ankle joint part of the old user, the x-axis of the inertial sensor module is forward horizontally, the y-axis of the inertial sensor module is forward horizontally and rightward, and the z-axis of the inertial sensor module is forward vertically and downward; the singlechip processing module, the GPS positioning module, the GPRS communication module, the pressure sensor module and the power module are all integrally arranged at the sole of the shoe of the old; and the GPRS communication module is used for realizing mobile phone short message information communication with the old people guardian through the GSW public network. The invention calculates the gait time phase parameters of the old people while realizing the detection of the old people falling, and provides necessary basis for analyzing the old people falling reasons and effectively preventing the old people falling.
The technical scheme is that whether falling actions occur or not is judged by monitoring human body sight line information and body posture conditions, but the scheme cannot effectively identify the front falling indications such as step confusion and the like of personnel wearing intelligent shoes, and cannot timely prevent and remind pedestrians of paying attention to falling prevention. At present, no technical scheme for detecting the step confusion and effectively reminding personnel to avoid falling is available, and therefore, an intelligent shoe capable of detecting the step confusion and a detection method are provided.
Disclosure of Invention
The invention provides an intelligent shoe capable of detecting step confusion and a detection method thereof in order to solve the problems.
The invention relates to a method for detecting step confusion, which is characterized by comprising the following steps:
and calculating a step consistency value according to the left foot parameter information and the right foot parameter information, and judging whether the steps are disordered or not according to the step consistency value.
Preferably, the left and right foot parameter information includes any one or more of movement direction information of the left and right feet, movement speed information of the left and right feet, height information of the left and right feet, left and right distance information of the left and right feet, and front and rear distance information of the left and right feet.
Preferably, the step consistency value is calculated according to the left and right foot parameter information, and the method comprises the following steps:
calculating a step direction consistency value according to the included angle of the action directions of the left foot and the right foot at the current moment and/or the difference value between the left and right distances of the left foot and the right foot and the average distance in the previous period;
calculating a step speed consistency value according to the matching degree of the difference value of the moving speeds of the left foot and the right foot and the height difference value of the left foot and the right foot at the current moment and/or the matching degree of the difference value of the moving speeds of the left foot and the right foot and the front-back distance of the left foot and the right foot;
and calculating the step consistency value according to the step direction consistency value and/or the step speed consistency value.
The invention relates to a method for detecting step confusion, which is characterized by comprising the following steps:
and calculating a step power rationality value according to the power generation foot information, and judging whether the steps are disordered or not according to the power generation rationality value.
Preferably, the information of the force-exerting feet comprises any one or more of alternating information of the force-exerting feet when the person moves, time interval information of the force-exerting feet when the person walks, time interval information of the force-exerting feet when the person runs, pressure information of the force-exerting feet when the person walks and pressure information of the force-exerting feet when the person runs.
Preferably, the step power rationality value is calculated according to the power foot information, and the method comprises the following steps:
acquiring the action speed of a person at the current moment and obtaining the information of the stressing feet according to the stressing analysis of the left foot and the right foot;
and calculating the reasonable value of the step force according to the matching value of the conversion frequency of the force-generating foot and the action speed when the person acts in the current certain time period and/or the matching value of the time interval of the force-generating foot converted by the person and the action speed and/or the matching value of the pressure information of the force-generating foot of the person and the action speed.
The invention relates to a method for detecting step confusion, which is characterized by comprising the following steps:
and calculating a step alternation rule value according to the left and right foot touchdown information, and judging whether the steps are disordered or not according to the step alternation rule value.
Preferably, the left and right foot contact information includes any one or more of time interval information of left and right feet contacting the ground in different motion states, front and rear interval information of left and right feet contacting the ground in different motion states, and left and right interval information of left and right feet contacting the ground in different motion states.
Preferably, the step alternation rule value is calculated according to the left and right foot contact information, and the method comprises the following steps:
calculating a step alternation time rule value according to the change value of the time interval of the left foot and the right foot contacting the ground in the current certain time period;
calculating a step alternating distance rule value according to a change value of a front-rear distance between left and right feet contacting the ground and/or a change value of a left-right distance between left and right feet contacting the ground within a current certain time period;
and calculating the step alternation rule value according to the step alternation time rule value and/or the step alternation distance rule value.
The invention relates to a method for detecting step confusion, which is characterized by comprising the following steps:
and calculating a step standard value according to the step consistency value and/or the step power rationality value and/or the step alternation rule value, and judging whether the steps are disordered or not according to the step standard value.
A computer readable storage medium storing a computer program for electronic data exchange, wherein the computer program causes a computer to perform the above method.
An intelligent shoe capable of detecting step confusion, which is characterized by comprising: a shoe body, a motion detection device, a data transmission device, a processor, a memory and a reminding device installed in the shoe, and one or more programs; the action detection device is used for detecting left and right foot parameter information, force-bearing foot information and left and right foot touchdown information, the data transmission device is used for transmitting acquired data to the processor, the reminding device is used for reminding people of preventing falling when the footstep confusion is detected, the one or more programs are stored in the memory and are configured to be executed by the processor, and the programs enable the computer to execute the method.
The method and the system have the advantages that:
(1) According to the angle between the action directions of the left foot and the right foot at the current moment and/or the difference between the left and right distance of the left foot and the right distance of the right foot and the average distance in the previous period, and the matching degree between the difference of the moving speeds of the left foot and the right foot at the current moment and the height difference of the left foot and the right foot and/or the front and back distance, the step consistency value is calculated, the consistency of the left foot and the right foot step directions and the speed can be effectively identified, and the falling hidden danger caused by the inconsistent left foot and right foot steps can be conveniently identified.
(2) According to the matching value of the conversion frequency of the force-generating foot and the action speed during the action and/or the matching value of the time interval of the conversion of the force-generating foot and the action speed and/or the matching value of the pressure information of the force-generating foot and the action speed, the reasonable value of the foot step force generation is calculated, the matching condition of the foot step force generation and the action speed can be effectively identified, and the falling hidden danger caused by mismatching of the foot step force generation and the action speed can be conveniently identified.
(3) According to the change value of the time interval between the left foot and the right foot contacting the ground, the change value of the front-rear distance between the left foot and the right foot contacting the ground and/or the change value of the left-right distance, the step alternation rule value is calculated, whether the step alternation time and the step alternation distance are regular or not can be effectively identified, and the falling hidden danger caused by sudden change of the step alternation habit is conveniently identified.
(4) The method comprises the steps of calculating the hidden danger value according to the step consistency value and/or the step force-giving rationality value and/or the step alternation rule value, judging whether the step has the falling hidden danger according to the hidden danger value, and effectively identifying the falling risks possibly brought by inconsistent left and right steps, inconsistent force-giving, disordered step alternation rule and the like when the intelligent shoe is worn so as to prevent and remind pedestrians in time.
Drawings
FIG. 1 is a flow chart of steps of a method of detecting step confusion in accordance with an embodiment of the present invention;
FIG. 2 is a schematic diagram of a smart shoe with a detectable step disturbance according to an embodiment of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in detail. The wearing object of the intelligent shoe of the present invention is not limited to a human, but also includes an animal (e.g., pet shoe), an intelligent robot (one or more feet for replacing a robot), etc., and when applied to an animal or intelligent robot having more than two feet, the left and right feet can be extended by only a plurality of feet.
An embodiment of a method for detecting step confusion according to the present invention is characterized by comprising:
acquiring left and right foot parameter information;
and calculating a step consistency value according to the left foot parameter information and the right foot parameter information, and judging whether the steps are disordered or not according to the step consistency value.
Preferably, the left and right foot parameter information includes any one or more of movement direction information of the left and right feet, movement speed information of the left and right feet, height information of the left and right feet, left and right distance information of the left and right feet, and front and rear distance information of the left and right feet. In this embodiment, different types of shoes, such as shoes for elders, shoes for children, shoes for sport, shoes for high heels, sandals, etc., have different walking requirements, and the parameter requirements of the left and right feet are also different, and mainly include any one or more combinations of movement direction information of the left and right feet, movement speed information of the left and right feet, height information of the left and right feet, left and right distance information of the left and right feet, and front and rear distance information of the left and right feet.
Preferably, the step consistency value is calculated according to the left and right foot parameter information, and the method comprises the following steps:
calculating a step direction consistency value according to the included angle of the action directions of the left foot and the right foot at the current moment and/or the difference value between the left and right distances of the left foot and the right foot and the average distance in the previous period;
calculating a step speed consistency value according to the matching degree of the difference value of the moving speeds of the left foot and the right foot and the height difference value of the left foot and the right foot at the current moment and/or the matching degree of the difference value of the moving speeds of the left foot and the right foot and the front-back distance of the left foot and the right foot;
and calculating the step consistency value according to the step direction consistency value and/or the step speed consistency value.
In this embodiment, the step direction consistency value is calculated according to the angle between the action directions of the left and right feet at the current moment and/or the difference between the left and right distances between the left and right feet and the average distance in the previous period, and is: the method comprises the steps of calculating a step direction consistency value according to the negative correlation between the included angle of the action direction of the left foot and the action direction of the right foot at the current moment and the step direction consistency value, calculating the step direction consistency value according to the negative correlation between the difference value of the left and right distance of the left foot and the average distance of the right foot in the previous period and the step direction consistency value, and calculating any one of the step direction consistency values according to the negative correlation between the included angle of the action direction of the left foot and the action direction of the left foot at the current moment, the difference value of the left and right distance of the left foot and the average distance of the right foot in the previous period and the step direction consistency value, wherein the step direction consistency value is represented by a variable m.
The step speed consistency value is calculated according to the matching degree of the difference value of the moving speeds of the left foot and the right foot and the height difference value of the left foot and the right foot at the current moment and/or the matching degree of the difference value of the moving speeds of the left foot and the right foot and the front-back distance of the left foot and the right foot, and is: the step speed consistency value is calculated according to the positive correlation between the difference value of the moving speed of the left and right feet at the current moment and the height difference value of the left and right feet (calculated according to the corresponding relation between the moving speed and the height difference which are set in advance), the step speed consistency value is calculated according to the positive correlation between the difference value of the moving speed of the left and right feet and the front-rear distance between the left and right feet (calculated according to the corresponding relation between the moving speed and the front-rear distance which are set in advance) and the step speed consistency value, and the step speed consistency value is calculated according to the positive correlation between the difference value of the moving speed of the left and right feet and the front-rear distance between the difference value of the moving speed of the left and right feet and the step speed consistency value, and the step speed consistency value is represented by a variable n.
The step consistency value is calculated according to the positive correlation between the step consistency value and the step direction consistency value and/or the step speed consistency value, and the step consistency value is represented by a variable a.
In table a, A1 to A3 represent different embodiments of calculating the step uniformity value a, wherein the step direction uniformity value m and the step speed uniformity value n referred to in table a are calculated by using the calculation formulas in the above embodiments.
Table A different embodiments for calculating a step consistency value
A step consistency abnormal threshold value X is set in advance, a step consistency value a is obtained according to any one of the calculation methods in the table a, and if a < X (for example, x=0.8), it is determined that the steps are disordered.
In another preferred embodiment, the method for detecting step confusion of the present invention is characterized by comprising:
acquiring information of a force foot;
and calculating a step power rationality value according to the power generation foot information, and judging whether the steps are disordered or not according to the power generation rationality value.
Preferably, the information of the force-exerting feet comprises any one or more of alternating information of the force-exerting feet when the person moves, time interval information of the force-exerting feet when the person walks, time interval information of the force-exerting feet when the person runs, pressure information of the force-exerting feet when the person walks and pressure information of the force-exerting feet when the person runs. In this embodiment, different types of shoes, such as elder shoes, children shoes, leather shoes, sport shoes, high-heeled shoes, sandals, and pet shoes, have different stress foot requirements according to different walking modes, and mainly include any one or more combinations of alternating information of stress foot transformation during the movement of personnel, time interval information of stress foot transformation during the walking of personnel, time interval information of stress foot transformation during the running of personnel, pressure information of stress foot during the walking of personnel.
Preferably, the step power rationality value is calculated according to the power foot information, and the method comprises the following steps:
acquiring the action speed of a person at the current moment and obtaining the information of the stressing feet according to the stressing analysis of the left foot and the right foot;
and calculating the reasonable value of the step force according to the matching value of the conversion frequency of the force-generating foot and the action speed when the person acts in the current certain time period and/or the matching value of the time interval of the force-generating foot converted by the person and the action speed and/or the matching value of the pressure information of the force-generating foot of the person and the action speed.
In this embodiment, the matching value of the transformation frequency and the action speed of the force-exerting foot when the person acts is calculated according to the matching condition of the transformation frequency and the action speed of the current force-exerting foot and the corresponding relation between the transformation frequency and the action speed of the force-exerting foot, which are set in advance, and the matching value of the transformation frequency and the action speed of the force-exerting foot when the person acts in a current certain period is represented by a variable u, the value range is from 0 to 1, and the larger the difference value of the normal action speed corresponding to the transformation frequency of the current action speed and the transformation frequency of the current force-exerting foot is, the smaller the matching degree u is.
The matching value of the time interval of the person changing the force-exerting foot and the action speed is calculated according to the matching condition of the time interval of the current changing force-exerting foot and the corresponding relation between the action speed and the time interval of the previously set changing force-exerting foot and the action speed, the matching value of the time interval of the current changing force-exerting foot and the action speed is represented by a variable v, the value range is from 0 to 1, and the larger the difference value of the normal action speed corresponding to the time interval of the current changing force-exerting foot is, the smaller the matching degree v is.
The matching value of the pressure information of the person force-exerting foot and the action speed is calculated according to the matching condition of the pressure information of the current force-exerting foot and the corresponding relation between the action speed and the preset pressure information of the force-exerting foot and the action speed, the matching value of the pressure information of the current force-exerting foot and the action speed is represented by a variable y, the value range is from 0 to 1, and the matching degree y is smaller as the difference value of the normal action speed corresponding to the pressure information of the current force-exerting foot is larger.
The step power rationality value is calculated according to the matching value of the conversion frequency of the power generating foot and the action speed when the person acts and/or the positive correlation relation between the time interval of the power generating foot and the action speed and/or the matching value of the pressure information of the person power generating foot and the action speed in the current certain time period, wherein the step power rationality value is represented by a variable b.
In table B, B1 to B7 represent different embodiments of calculating the rational value B of the step exertion, wherein the matching value u of the conversion frequency and the action speed of the exertion foot, the matching value v of the time interval and the action speed of the conversion exertion foot, and the matching value y of the pressure information and the action speed of the exertion foot are calculated by using the calculation formulas in the above embodiments.
Table B different embodiments for calculating the rational value of the force exerted by the foot
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The abnormal force-generating foot threshold value Y is set in advance, the reasonable force-generating foot value B is obtained according to the calculation method of any one of the table B, and if B < Y (for example, Y=0.6), the disorder of the foot is judged.
In another preferred embodiment, the method for detecting step confusion of the present invention is characterized by comprising:
acquiring left and right foot touchdown information;
and calculating a step alternation rule value according to the left and right foot touchdown information, and judging whether the steps are disordered or not according to the step alternation rule value.
Preferably, the left and right foot contact information includes any one or more of time interval information of left and right feet contacting the ground in different motion states, front and rear interval information of left and right feet contacting the ground in different motion states, and left and right interval information of left and right feet contacting the ground in different motion states. In this embodiment, according to different walking requirements of different types of shoes, such as shoes for old people, shoes for children, shoes for sport, shoes for high heels, sandals, etc., the requirements for touching the ground with the left and right feet are different, and the method mainly comprises any one or more combination of time interval information of touching the ground with the left and right feet in different sport states, front-back interval information of touching the ground with the left and right feet in different sport states, and left-right interval information of touching the ground with the left and right feet in different sport states.
Preferably, the step alternation rule value is calculated according to the left and right foot contact information, and the method comprises the following steps:
calculating a step alternation time rule value according to the change value of the time interval of the left foot and the right foot contacting the ground in the current certain time period;
calculating a step alternating distance rule value according to a change value of a front-rear distance between left and right feet contacting the ground and/or a change value of a left-right distance between left and right feet contacting the ground within a current certain time period;
and calculating the step alternation rule value according to the step alternation time rule value and/or the step alternation distance rule value.
In this embodiment, the step alternation time rule value is calculated according to the change value of the time interval between the left foot and the right foot contacting the ground in the current certain time period, and is: calculating a step alternation time rule value according to the negative correlation relation between the variance of the time interval of the left and right feet contacting the ground in the current certain time period and the step alternation time rule value, and calculating any one of the step alternation time rule value according to the negative correlation relation between the average variation of the time interval of the left and right feet contacting the ground in the current certain time period and the step alternation time rule value, wherein the step alternation time rule value is represented by a variable p.
The step alternating distance rule value is calculated according to the change value of the front-back distance between the left foot and the right foot contacting the ground and/or the change value of the left-right distance between the left foot and the right foot contacting the ground in the current certain time period, and is: the method comprises the steps of calculating a regular value of the alternate foot distance according to the negative correlation between a change value (average change or variance) of the distance between the left foot and the right foot contacting the ground and a regular value of the alternate foot distance in a current certain time period, calculating a regular value of the alternate foot distance according to the negative correlation between a change value (average change or variance) of the distance between the left foot and the right foot contacting the ground and the regular value of the alternate foot distance in the current certain time period, and calculating any term of the regular value of the alternate foot distance according to the negative correlation between a change value (average change or variance) of the distance between the left foot and the right foot contacting the ground and the regular value of the alternate foot distance in the current certain time period, wherein the regular value of the alternate foot distance is represented by a variable q.
The step alternation rule value is calculated according to the positive correlation relation between the step alternation rule value and the step alternation time rule value and/or the step alternation distance rule value, and the step alternation rule value is represented by a variable c.
In table C, C1 to C3 represent different embodiments for calculating the step alternation rule value, wherein the step alternation time rule value p and the step alternation distance rule value q referred to in table C are obtained by using the formulas in the above embodiments.
Table C different embodiments for calculating the value of the step alternation law
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The step alternation abnormal threshold value Z is set in advance, a step alternation rule value C is obtained according to the calculation method of any one of the table C, and if C is smaller than Z (for example, Z=0.6), the step disorder is judged.
In another preferred embodiment, a method for detecting step confusion according to the present invention, the flowchart of which is shown in fig. 1, comprises the steps of:
calculating a step consistency value according to the left foot parameter information and the right foot parameter information;
calculating a foot step force rationality value according to the force foot information;
calculating a foot step alternation rule value according to the left foot and right foot touch information;
and calculating a step standard value according to the step consistency value and/or the step power rationality value and/or the step alternation rule value, and judging whether the steps are disordered or not according to the step standard value.
In this embodiment, the step standard value is calculated according to a positive correlation between the step standard value and the step consistency value and/or the step power rationality value and/or the step alternation rule value, and the step standard value is represented by a variable x.
In table D, D1 to D7 represent different embodiments of calculating the step specification values, wherein the step consistency value a, the step power rationality value b, and the step alternation rule value c referred to in table D are obtained by using the formulas in the above embodiments.
Table D different embodiments of calculating the step specification values
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A step specification value x is calculated according to any one of the methods in table D, a step confusion threshold U (e.g., u=0.8) is set in advance, and if x < U, it is determined that the step is disordered.
A computer readable storage medium storing a computer program for electronic data exchange, wherein the computer program causes a computer to perform the above method.
An intelligent shoe capable of detecting step confusion, which is characterized by comprising: a shoe body, a motion detection device, a data transmission device, a processor, a memory and a reminding device installed in the shoe, and one or more programs; the action detection device is used for detecting left and right foot parameter information, force-bearing foot information and left and right foot touchdown information, the data transmission device is used for transmitting acquired data to the processor, the reminding device is used for reminding people of preventing falling when the footstep confusion is detected, the one or more programs are stored in the memory and are configured to be executed by the processor, and the programs enable the computer to execute the method.
Of course, those skilled in the art will recognize that the above embodiments are merely illustrative of the present invention and not intended to be limiting, and that changes and modifications of the above embodiments are within the scope of the present invention.
Claims (5)
1. A method of detecting step confusion, comprising:
calculating a step consistency value according to the left foot parameter information and the right foot parameter information, and judging whether the steps are disordered or not according to the step consistency value; the left and right foot parameter information comprises any one or more of action direction information of left and right feet, moving speed information of left and right feet, height information of left and right feet, left and right distance information of left and right feet and front and rear distance information of left and right feet;
the step consistency value is calculated according to the left foot parameter information and the right foot parameter information, and the method comprises the following steps: calculating a step direction consistency value according to a negative correlation between an included angle of the action direction of the left foot and the action direction of the right foot at the current moment and the step direction consistency value and/or a negative correlation between a difference value between the left distance and the right distance of the left foot and the average distance in a previous period and the step direction consistency value; calculating a step speed consistency value according to a positive correlation between the difference value of the moving speeds of the left foot and the right foot and the step speed consistency value at the current moment and/or a positive correlation between the difference value of the moving speeds of the left foot and the right foot and the front-back distance between the left foot and the right foot and the step speed consistency value; and calculating the step consistency value according to the positive correlation between the step direction consistency value and/or the step speed consistency value and the step consistency value.
2. A method of detecting step confusion, comprising:
calculating a step power rationality value according to the power generation foot information and judging whether the steps are disordered or not according to the power generation rationality value;
the step power rationality value is calculated according to the power generating foot information, and the method comprises the following steps: acquiring the action speed at the current moment and obtaining the information of the stressing feet according to the stress analysis of the left foot and the right foot; the force-generating foot information comprises any one or more of alternating information of the force-generating foot during action, time interval information of the force-generating foot during walking, time interval information of the force-generating foot during running, pressure information of the force-generating foot during walking and pressure information of the force-generating foot during running; calculating the reasonable value of the step power according to the positive correlation between the matching value of the conversion frequency of the power generating foot and the action speed and the reasonable value of the step power during the action within a current certain time period and/or the positive correlation between the matching value of the time interval of the conversion of the power generating foot and the action speed and the reasonable value of the step power and/or the positive correlation between the pressure information of the power generating foot and the matching value of the action speed and the reasonable value of the step power;
the matching value of the transformation frequency and the action speed of the force-exerting foot during the action is calculated according to the matching condition of the transformation frequency and the action speed of the current force-exerting foot and the corresponding relation of the preset transformation frequency and the action speed of the force-exerting foot; the matching value of the time interval of the conversion force-exerting foot and the action speed is calculated according to the matching condition of the time interval of the current conversion force-exerting foot and the corresponding relation between the action speed and the time interval of the conversion force-exerting foot and the action speed which are set in advance; the matching value of the pressure information of the force-exerting foot and the action speed is calculated according to the matching condition of the pressure information of the current force-exerting foot and the corresponding relation between the action speed and the pressure information of the force-exerting foot and the action speed which are set in advance.
3. A method of detecting step confusion, comprising:
calculating a footstep alternation rule value according to the left and right foot touchdown information, and judging whether the footsteps are disordered or not according to the footstep alternation rule value; the left and right foot contact information comprises any one or more of time interval information of left and right feet contacting the ground in different motion states, front and back interval information of left and right feet contacting the ground in different motion states and left and right interval information of left and right feet contacting the ground in different motion states;
the step alternation rule value is calculated according to the left and right foot touchdown information, and the method comprises the following steps: calculating a step alternation time rule value according to the change value of the time interval of the left foot and the right foot contacting the ground in the current certain time period; calculating the rule value of the step alternating distance according to the negative correlation between the change value of the distance between the left foot and the right foot contacting the ground and the rule value of the step alternating distance in the current certain time period and/or the negative correlation between the change value of the distance between the left foot and the right foot contacting the ground and the rule value of the step alternating distance; calculating a step alternation rule value according to the step alternation time rule value and/or the positive correlation relation between the step alternation distance rule value and the step alternation rule value;
the step alternation time rule value is calculated according to the change value of the time interval of the left foot and the right foot contacting the ground in the current certain time period, and is any one of the step alternation time rule value calculated according to the negative correlation relationship between the variance of the time interval of the left foot and the right foot contacting the ground in the current certain time period and the step alternation time rule value calculated according to the negative correlation relationship between the average change value of the time interval of the left foot and the right foot contacting the ground in the current certain time period and the step alternation time rule value.
4. A method of detecting step confusion, comprising:
a positive correlation of the step coincidence value according to claim 1 and the step rationality value according to claim 2 with the step norm value, or a positive correlation of the step coincidence value according to claim 1 and the step alternation rule value according to claim 3 with the step norm value, or a positive correlation of the step coincidence value according to claim 2 and the step alternation rule value according to claim 3 with the step norm value, or a positive correlation of the step coincidence value according to claim 1 and the step rationality value according to claim 2 with the step norm value, and thereby determining whether the step is disordered.
5. An intelligent shoe capable of detecting step confusion, which is characterized by comprising: a shoe body, a motion detection device, a data transmission device, a processor, a memory and a reminding device installed in the shoe, and one or more programs; the action detection means is for detecting left and right foot parameter information, force foot information and left and right foot contact information, the data transmission means is for transmitting the acquired data to a processor, the reminding means is for reminding of taking care of anti-drop when a step confusion is detected, the one or more programs are stored in a memory and configured to be executed by the processor, the programs cause a computer to perform the method of any one of claims 1-4.
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