A method and device for measuring foot structure and force characteristics

Abstract

The present invention relates to the field of sports biomechanics, and more specifically to a method and device for measuring foot structure and force characteristics, the method comprising: obtaining the position of the equivalent action point of the forefoot lateral pressure and the forefoot lateral pressure value; obtaining the position of the equivalent action point of the forefoot medial pressure and the forefoot medial pressure value; obtaining the position of the equivalent action point of the heel pressure and the heel pressure value; calculating the position of the equivalent action point of the plantar lumped force; calculating the left and right pressure distribution index and / or the front and back pressure distribution index. The method proposed by the present invention is based on the position of the equivalent action point of the pressure in each area of ​​the plantar and the comprehensive pressure, and the measurement result is not affected by the operator's subjective factors, the plantar soft tissue, etc., and has better reliability.

Description

Technical Field

[0001] The present invention relates to the field of sports biomechanics, and in particular to a method and a device for measuring foot structure and force characteristics. Background Art

[0002] The human arch has the ability to absorb and transmit part of the ground reaction force. The foot structure and force characteristics are considered to be important biomechanical factors affecting the function of the foot and lower limbs.

[0003] At present, the main methods for evaluating and classifying the height of the arch include visual inspection, photography, footprints, arch height index (AHI) and arch height index measurement system (AHIMS). Visual inspection relies on the doctor's experience and is affected by subjective factors; evaluation based on photographs, pressure cloud maps or footprints is easily affected by the soft tissue of the plantar; using a handheld vernier caliper to measure the arch height index (AHI) is prone to positioning errors and the process is cumbersome; the arch height index measurement system (AHIMS) with a series of positionable sliding calipers also has problems such as some individuals having difficulty determining the position of the first metatarsal joint, the measurement results are sensitive to small readings or positioning errors, and the combined use of multiple calipers is inefficient.

[0004] The pressure distribution of the foot contains a lot of information, but there is currently a lack of relevant research. Summary of the invention

[0005] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a method and device for measuring foot structure and force characteristics with simple operation process, high measurement efficiency and better reliability.

[0006] To achieve the above objectives and other related objectives, the present invention provides a method for measuring foot structure and force characteristics, comprising:

[0007] Obtain the position of the equivalent pressure action point on the outer side of the forefoot and the pressure value on the outer side of the forefoot;

[0008] Obtaining the position of the equivalent action point of the inner side of the forefoot and the inner side of the forefoot pressure value;

[0009] Obtain the heel pressure equivalent action point position and heel pressure value;

[0010] Calculate the equivalent point of action of the plantar total force according to the equivalent point of action of the forefoot lateral pressure, the forefoot lateral pressure value, the equivalent point of action of the forefoot medial pressure, the forefoot medial pressure value, the equivalent point of action of the heel pressure, and the heel pressure value;

[0011] The left-right pressure distribution index and / or the front-back pressure distribution index are calculated according to the equivalent action point position of the forefoot lateral pressure, the equivalent action point position of the forefoot medial pressure, the equivalent action point position of the heel pressure and the equivalent action point position of the plantar concentrated force.

[0012] In an optional embodiment of the present invention, obtaining the position of the equivalent action point of the forefoot lateral pressure and the forefoot lateral pressure value comprises:

[0013] Measuring pressure values ​​at at least three different locations on the outer side of the forefoot by at least three pressure sensors;

[0014] The position of the pressure equivalent action point on the outer side of the forefoot and the pressure value on the outer side of the forefoot are calculated according to the pressure values ​​of at least three different positions on the outer side of the forefoot.

[0015] In an optional embodiment of the present invention, obtaining the position of the equivalent action point of the inner side of the forefoot pressure and the inner side of the forefoot pressure value includes:

[0016] Measuring pressure values ​​at at least three different locations on the inner side of the forefoot by at least three pressure sensors;

[0017] The position of the pressure equivalent action point on the inner side of the forefoot and the pressure value on the inner side of the forefoot are calculated according to the pressure values ​​of at least three different positions on the inner side of the forefoot.

[0018] In an optional embodiment of the present invention, the step of obtaining the heel pressure equivalent action point position and the heel pressure value includes:

[0019] Measuring pressure values ​​at at least three different locations of the heel by at least three pressure sensors;

[0020] The heel pressure equivalent action point position and the heel pressure value are calculated according to the pressure values ​​of at least three different positions of the heel.

[0021] In an optional embodiment of the present invention, the calculation of the left-right pressure distribution index and / or the front-back pressure distribution index according to the equivalent action point position of the forefoot lateral pressure, the equivalent action point position of the forefoot medial pressure, the equivalent action point position of the heel pressure, and the equivalent action point position of the plantar total force includes:

[0022] Calculate the area of ​​a first triangle formed by the lines connecting the three equivalent pressure action points on the outer side of the forefoot, the inner side of the forefoot, and the heel according to the equivalent pressure action point positions;

[0023] According to the positions of the equivalent action points of the forefoot medial pressure, the heel pressure, and the plantar total force, the area of ​​the second triangle formed by the connecting lines of the three is calculated;

[0024] A first left-right pressure distribution index is calculated according to the area of ​​the first triangle and the area of ​​the second triangle, where the first left-right pressure distribution index is the ratio of the area of ​​the second triangle to the area of ​​the first triangle.

[0025] In an optional embodiment of the present invention, the calculation of the left-right pressure distribution index and / or the front-back pressure distribution index according to the equivalent action point position of the forefoot lateral pressure, the equivalent action point position of the forefoot medial pressure, the equivalent action point position of the heel pressure, and the equivalent action point position of the plantar total force includes:

[0026] Calculate the area of ​​a first triangle formed by the lines connecting the three equivalent pressure action points on the outer side of the forefoot, the inner side of the forefoot, and the heel according to the equivalent pressure action point positions;

[0027] According to the positions of the equivalent action points of the forefoot lateral pressure, the heel pressure, and the sole total force, the area of ​​the third triangle formed by the connecting lines is calculated;

[0028] A second left-right pressure distribution index is calculated according to the area of ​​the first triangle and the area of ​​the third triangle, where the second left-right pressure distribution index is the ratio of the area of ​​the third triangle to the area of ​​the first triangle.

[0029] In an optional embodiment of the present invention, the calculation of the left-right pressure distribution index and / or the front-back pressure distribution index according to the equivalent action point position of the forefoot lateral pressure, the equivalent action point position of the forefoot medial pressure, the equivalent action point position of the heel pressure, and the equivalent action point position of the plantar total force includes:

[0030] Calculate the area of ​​a first triangle formed by the lines connecting the three equivalent pressure action points on the outer side of the forefoot, the inner side of the forefoot, and the heel according to the equivalent pressure action point positions;

[0031] According to the positions of the equivalent action points of the pressure on the outer side of the forefoot, the equivalent action points of the pressure on the inner side of the forefoot, and the equivalent action points of the total force on the sole of the foot, the area of ​​the fourth triangle formed by the lines connecting the three is calculated;

[0032] A front-rear pressure distribution index is calculated according to the area of ​​the first triangle and the area of ​​the fourth triangle, where the front-rear pressure distribution index is the ratio of the area of ​​the fourth triangle to the area of ​​the first triangle.

[0033] In an optional embodiment of the present invention, obtaining the position of the equivalent action point of the forefoot lateral pressure and the forefoot lateral pressure value comprises:

[0034] Within a period of time, the positions of the equivalent action points of the pressure on the outer side of the forefoot and the pressure values ​​on the outer side of the forefoot at multiple moments are obtained at certain time intervals;

[0035] The obtaining of the position of the equivalent action point of the forefoot inner side pressure and the forefoot inner side pressure value comprises:

[0036] Within a period of time, the positions of the equivalent action points of the inner side of the forefoot pressure and the inner side of the forefoot pressure values ​​at multiple moments are obtained at certain time intervals;

[0037] The obtaining of the heel pressure equivalent action point position and the heel pressure value comprises:

[0038] Within a period of time, the heel pressure equivalent action point position and heel pressure value at multiple moments are obtained at certain time intervals;

[0039] The method of calculating the equivalent action point position of the plantar total force according to the forefoot lateral pressure equivalent action point position, forefoot lateral pressure value, forefoot medial pressure equivalent action point position, forefoot medial pressure value, heel pressure equivalent action point position and heel pressure value comprises:

[0040] Calculate the equivalent point of action of the plantar total force at each moment according to the equivalent point of action of the forefoot lateral pressure, the forefoot lateral pressure value, the equivalent point of action of the forefoot medial pressure, the forefoot medial pressure value, the equivalent point of action of the heel pressure and the heel pressure value at each moment;

[0041] The calculating of the left-right pressure distribution index and / or the front-back pressure distribution index according to the equivalent action point position of the forefoot lateral pressure, the equivalent action point position of the forefoot medial pressure, the equivalent action point position of the heel pressure, and the equivalent action point position of the plantar total force comprises:

[0042] Calculate the instantaneous left-right pressure distribution index and / or the instantaneous front-back pressure distribution index at each moment according to the equivalent action point position of the forefoot lateral pressure, the equivalent action point position of the forefoot medial pressure, the equivalent action point position of the heel pressure, and the equivalent action point position of the plantar lumped force at each moment, and obtain an instantaneous left-right pressure distribution index sequence and / or an instantaneous front-back pressure distribution index sequence;

[0043] The left-right pressure distribution index and / or the front-to-back pressure distribution index is calculated according to the instantaneous left-right pressure distribution index sequence and / or the instantaneous front-to-back pressure distribution index sequence, the left-right pressure distribution index is the average value of the instantaneous left-right pressure distribution index sequence, and the front-to-back pressure distribution index is the average value of the instantaneous front-to-back pressure distribution index sequence.

[0044] To achieve the above objectives and other related objectives, the present invention further provides a device for measuring foot structure and force characteristics, comprising:

[0045] A forefoot lateral measurement module is used to obtain the position of the equivalent action point of the forefoot lateral pressure and the forefoot lateral pressure value;

[0046] The inner forefoot measurement module is used to obtain the position of the inner forefoot pressure equivalent action point and the inner forefoot pressure value;

[0047] Heel measurement module, to obtain the heel pressure equivalent action point position and heel pressure value;

[0048] A first calculation module is used to calculate the equivalent point of action of the plantar lumped force according to the equivalent point of action of the forefoot lateral pressure, the forefoot lateral pressure value, the equivalent point of action of the forefoot medial pressure, the forefoot medial pressure value, the equivalent point of action of the heel pressure and the heel pressure value;

[0049] The second calculation module calculates the left-right pressure distribution index and / or the front-back pressure distribution index according to the equivalent action point position of the forefoot lateral pressure, the equivalent action point position of the forefoot medial pressure, the equivalent action point position of the heel pressure and the equivalent action point position of the plantar total force.

[0050] In an optional embodiment of the present invention, the forefoot lateral measurement module, the forefoot medial measurement module and the heel measurement module respectively include a forefoot lateral support plate, a forefoot medial support plate and a heel support plate, and at least three force sensors are respectively arranged under the forefoot lateral support plate, the forefoot medial support plate and the heel support plate.

[0051] The technical effects of the present invention are:

[0052] The method proposed by the present invention is based on the pressure of each area of ​​the sole and the position of the equivalent action point of the comprehensive pressure. The measurement result is not affected by the operator's subjective factors, the sole soft tissue, etc., and has better reliability.

[0053] Only by using the force information of three positions, the force distribution of the foot can be well obtained, which is simple and effective.

[0054] The invention has a simple and convenient operation process, high measurement efficiency, and can quickly evaluate the condition of the human arch.

[0055] The operator of the present invention does not need to position and read the caliper, thereby eliminating positioning errors and reading errors caused by different contact forces of the caliper.

[0056] The distribution of pressure on the left and right sides can reflect the height of the arch of the foot. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 is a schematic diagram of the division of the sole area provided by an embodiment of the present invention;

[0058] Figure 2 is a schematic diagram of equivalent plantar stress action points provided by an embodiment of the present invention;

[0059] Figure 3 is a flow chart of a method for measuring foot structure and force characteristics provided by an embodiment of the present invention;

[0060] Figure 4 is a flow chart for obtaining the position of the equivalent action point of the pressure on the outer side of the forefoot and the pressure value on the outer side of the forefoot provided by an embodiment of the present invention;

[0061] Figure 5 It is a flow chart of obtaining the position of the equivalent action point of the inner side of the forefoot pressure and the inner side of the forefoot pressure value provided by an embodiment of the present invention;

[0062] Figure 6 is a flow chart for obtaining the heel pressure equivalent action point position and heel pressure value provided by an embodiment of the present invention;

[0063] Figure 7 is a flow chart of a method for calculating a left-right pressure distribution index and a front-back pressure distribution index provided by an embodiment of the present invention;

[0064] Figure 8 is a functional module block diagram of a foot structure and force characteristic measuring device provided by an embodiment of the present invention;

[0065] Fig. 9 It is a schematic diagram of the hardware structure of a device for measuring foot structure and force characteristics provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0066] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0067] It should be noted that the illustrations provided in the following embodiments are only used to illustrate the basic concept of the present invention in a schematic manner, and thus the illustrations only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0068] See also Figure 1As shown, first, the area division of the sole is described in detail. In the present invention, the sole is divided into three areas, namely, the lateral forefoot area I, the medial forefoot area II and the heel area III; in a specific embodiment, the range of the heel area is from the heel of the foot to the part with a longitudinal distance of 0.3 to 0.5 times the length of the foot from the heel; the range of the lateral forefoot area is from the outermost side of the foot to the gap between the second toe and the third toe of the foot; the range of the medial forefoot area is from the innermost side of the foot to the gap between the second toe and the third toe of the foot. It can be understood that the above division of the sole area is only used as a preferred embodiment and is not intended to limit the present invention. In actual applications, the division of each area can be adjusted within a certain range based on the above embodiment.

[0069] See also Figure 3-7 As shown, a method for measuring foot structure and force characteristics includes:

[0070] S1: Obtain the position of the equivalent pressure action point on the outer side of the forefoot and the pressure value on the outer side of the forefoot;

[0071] S2: Obtain the position of the equivalent pressure action point on the inner side of the forefoot and the pressure value on the inner side of the forefoot;

[0072] S3: Obtaining the heel pressure equivalent action point position and heel pressure value;

[0073] S4: calculating the equivalent action point position of the plantar total force according to the forefoot lateral pressure equivalent action point position, forefoot lateral pressure value, forefoot medial pressure equivalent action point position, forefoot medial pressure value, heel pressure equivalent action point position and heel pressure value;

[0074] S5: Calculate the left-right pressure distribution index and / or the front-back pressure distribution index according to the equivalent action point position of the forefoot lateral pressure, the equivalent action point position of the forefoot medial pressure, the equivalent action point position of the heel pressure, and the equivalent action point position of the plantar total force.

[0075] See also Figure 4 As shown, the step S1 specifically includes:

[0076] S11: measuring pressure values ​​at at least three different locations on the outer side of the forefoot by at least three pressure sensors;

[0077] S12: Calculating the position of the pressure equivalent action point on the outer side of the forefoot and the pressure value on the outer side of the forefoot according to the pressure values ​​of at least three different positions on the outer side of the forefoot.

[0078] Please refer to Figure 5 As shown, the step S2 specifically includes:

[0079] S21: measuring pressure values ​​at at least three different locations on the inner side of the forefoot by at least three pressure sensors;

[0080] S22: Calculating the position of the pressure equivalent action point on the inner side of the forefoot and the pressure value on the inner side of the forefoot according to the pressure values ​​of at least three different positions on the inner side of the forefoot.

[0081] See also Figure 6 As shown, the step S3 specifically includes:

[0082] S31: measuring pressure values ​​at at least three different positions of the heel by at least three pressure sensors;

[0083] S32: Calculating the heel pressure equivalent action point position and the heel pressure value according to the pressure values ​​at at least three different positions of the heel.

[0084] See also Figure 2 As shown, the specific process of step S4 is as follows:

[0085] Establish a spatial rectangular coordinate system o-xyz, where the coordinate origin o is any point on the horizontal plane where the heel support plate is located, any horizontal direction passing through the coordinate origin is the x-axis, the direction on the horizontal plane passing through the coordinate origin and perpendicular to the x-axis is the y-axis, and the direction passing through the origin and perpendicular to the x-axis and the y-axis is the z-axis;

[0086] Definition: The pressure value measured by the forefoot lateral force measurement module is PA, and the coordinates of the pressure equivalent action point A on the lateral side of the forefoot in the coordinate system o-xyz are (xA, yA, 0); the pressure value measured by the forefoot medial force measurement module is PB, and the coordinates of the pressure equivalent action point B on the medial side of the forefoot in the coordinate system o-xyz are (xB, yB, 0); the pressure value measured by the heel force measurement module is PC, and the coordinates of the pressure equivalent action point C on the heel in the coordinate system o-xyz are (xC, yC, 0); the coordinates of the equivalent action point O of the plantar lumped force in the coordinate system o-xyz are (xO, yO, 0); then:

[0087]

[0088]

[0089] It should be noted that the positions of the equivalent action points A, B, and C can be calculated using the same method, so they will not be described in detail.

[0090] See also Figure 7 As shown, the step S5 specifically includes:

[0091] S51: calculating the area of ​​a first triangle formed by the lines connecting the positions of the equivalent pressure action points on the outer side of the forefoot, the inner side of the forefoot, and the heel according to the positions of the equivalent pressure action points on the three sides;

[0092] S52: calculating the area of ​​a second triangle formed by the lines connecting the equivalent action point position of the inner side of the forefoot pressure, the equivalent action point position of the heel pressure, and the equivalent action point position of the sole concentrated force according to the three;

[0093] S53: Calculating a first left-right pressure distribution index according to the area of ​​the first triangle and the area of ​​the second triangle, wherein the first left-right pressure distribution index is the ratio of the area of ​​the second triangle to the area of ​​the first triangle.

[0094] S54: calculating the area of ​​a third triangle formed by the lines connecting the three, according to the positions of the equivalent action points of the forefoot lateral pressure, the heel pressure, and the plantar total force;

[0095] S55: Calculating a second left-right pressure distribution index according to the area of ​​the first triangle and the area of ​​the third triangle, wherein the second left-right pressure distribution index is the ratio of the area of ​​the third triangle to the area of ​​the first triangle.

[0096] S56: Calculate the area of ​​a fourth triangle formed by the lines connecting the three, according to the positions of the equivalent action points of the pressure on the outer side of the forefoot, the equivalent action points of the pressure on the inner side of the forefoot, and the equivalent action points of the total force on the sole;

[0097] S57: Calculate the front-rear pressure distribution index according to the area of ​​the first triangle and the area of ​​the fourth triangle, wherein the front-rear pressure distribution index is the ratio of the area of ​​the fourth triangle to the area of ​​the first triangle.

[0098] See also Figure 2 As shown, in one specific embodiment, the area of ​​the first triangle formed by point A, point B and point C is

[0099]

[0100] The area of ​​the second triangle formed by points B, C, and O is

[0101]

[0102] The area of ​​the third triangle formed by points A, C, and O is

[0103]

[0104] The area of ​​the fourth triangle formed by points A, B and O is

[0105]

[0106] in,

[0107]

[0108]

[0109]

[0110]

[0111] Then the first left and right pressure distribution index is

[0112]

[0113] The second left and right pressure distribution index is

[0114]

[0115] The front and rear pressure distribution index is

[0116]

[0117] It is understandable that in order to improve the measurement accuracy, the present invention can continuously obtain data at multiple moments at certain time intervals within a preset time and perform calculations respectively, and then take the average value of each calculation result as the final measurement result, as follows:

[0118] Within a period of time, the positions of the equivalent action points of the pressure on the outer side of the forefoot and the pressure values ​​on the outer side of the forefoot at multiple moments are obtained at certain time intervals;

[0119] Within a period of time, the positions of the equivalent action points of the inner side of the forefoot pressure and the inner side of the forefoot pressure values ​​at multiple moments are obtained at certain time intervals;

[0120] Within a period of time, the heel pressure equivalent action point position and heel pressure value at multiple moments are obtained at certain time intervals;

[0121] Calculate the equivalent point of action of the plantar total force at each moment according to the equivalent point of action of the forefoot lateral pressure, the forefoot lateral pressure value, the equivalent point of action of the forefoot medial pressure, the forefoot medial pressure value, the equivalent point of action of the heel pressure and the heel pressure value at each moment;

[0122] Calculate the instantaneous left-right pressure distribution index and / or the instantaneous front-back pressure distribution index at each moment according to the equivalent action point position of the forefoot lateral pressure, the equivalent action point position of the forefoot medial pressure, the equivalent action point position of the heel pressure, and the equivalent action point position of the plantar lumped force at each moment, and obtain an instantaneous left-right pressure distribution index sequence and / or an instantaneous front-back pressure distribution index sequence;

[0123] The left-right pressure distribution index and / or the front-to-back pressure distribution index is calculated according to the instantaneous left-right pressure distribution index sequence and / or the instantaneous front-to-back pressure distribution index sequence, the left-right pressure distribution index is the average value of the instantaneous left-right pressure distribution index sequence, and the front-to-back pressure distribution index is the average value of the instantaneous front-to-back pressure distribution index sequence.

[0124] The first left-right pressure distribution index and the second left-right pressure distribution index finally obtained by the present invention can accurately reflect the arch structure of the subject. The larger the first left-right pressure distribution index is, the higher the arch of the subject is, and the two are positively correlated with each other. The larger the second left-right pressure distribution index is, the lower the arch of the subject is, and the two are negatively correlated with each other. The front-back pressure distribution index can reflect the front-back force distribution of the sole. The larger the front-back pressure distribution index is, the greater the heel force ratio is. The first left-right pressure distribution index, the second left-right pressure distribution index and the front-back pressure distribution index obtained by the present invention can provide intuitive and reliable data support for foot structure analysis.

[0125] Based on the above method, the present invention also provides a foot structure and force characteristics measuring device, including a forefoot lateral measurement module 1, a forefoot medial measurement module 2, a heel measurement module 3, a first calculation module 4 and a second calculation module 5; it can be understood that the above modules correspond to the foot structure and force characteristics measuring method of the present invention, the forefoot lateral measurement module 1 is used to obtain the position of the equivalent action point of the forefoot lateral pressure and the forefoot lateral pressure value; the forefoot medial measurement module 2 is used to obtain the position of the equivalent action point of the forefoot medial pressure and the forefoot medial pressure value; the heel measurement module 3 obtains the heel pressure Equivalent action point position and heel pressure value; the first calculation module 4 is used to calculate the equivalent action point position of the plantar total force according to the equivalent action point position of the forefoot lateral pressure, the forefoot lateral pressure value, the equivalent action point position of the forefoot medial pressure, the forefoot medial pressure value, the heel pressure equivalent action point position and the heel pressure value; the second calculation module 5 calculates the left and right pressure distribution index and / or the front and back pressure distribution index according to the equivalent action point position of the forefoot lateral pressure, the equivalent action point position of the forefoot medial pressure, the heel pressure equivalent action point position and the equivalent action point position of the plantar total force.

[0126] In an optional embodiment of the present invention, the forefoot lateral measurement module 1, the forefoot medial measurement module 2 and the heel measurement module 3 respectively include a forefoot lateral support plate 11, a forefoot medial support plate 21 and a heel support plate 31, and at least three force sensors are respectively arranged under the forefoot lateral support plate, the forefoot medial support plate and the heel support plate.

[0127] In summary, the first left-right pressure distribution index, the second left-right pressure distribution index, and the front-back pressure distribution index obtained by the present invention can provide intuitive and reliable data support for foot structure analysis. The method proposed by the present invention is based on the position of the equivalent action point of the pressure in each area of ​​the sole and the comprehensive pressure. The measurement result is not affected by the operator's subjective factors, the soft tissue of the sole, etc., and has better reliability. The operation process of the present invention is simple and convenient, the measurement efficiency is high, and the human arch condition can be quickly evaluated. The operator of the present invention does not need to position and read the caliper, which eliminates the positioning error and reading error caused by different caliper contact forces.

[0128] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

[0129] In the description herein, many specific details, such as examples of components and / or methods, are provided to provide a complete understanding of embodiments of the present invention. However, those skilled in the art will recognize that embodiments of the present invention may be practiced without one or more of the specific details or with other devices, systems, components, methods, components, materials, parts, etc. In other cases, well-known structures, materials, or operations are not specifically shown or described in detail to avoid obscuring aspects of embodiments of the present invention.

[0130] References throughout this specification to "one embodiment," "an embodiment," or "a specific embodiment" mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention, and not necessarily in all embodiments. Thus, various appearances of the phrases "in one embodiment," "in an embodiment," or "in a specific embodiment" in different places throughout this specification do not necessarily refer to the same embodiment. In addition, the particular features, structures, or characteristics of any specific embodiment of the invention may be combined with one or more other embodiments in any suitable manner. It should be understood that other variations and modifications of the embodiments of the invention described and illustrated herein may be possible in light of the teachings herein and are to be considered part of the spirit and scope of the invention.

[0131] It should also be understood that one or more of the elements shown in the figures may also be implemented in a more separate or more integrated manner, or even removed because they are inoperable in certain circumstances or provided because they may be useful depending on the application.

[0132] In addition, unless otherwise explicitly stated, any marking arrows in the drawings should be regarded as exemplary only and not limiting. In addition, unless otherwise specified, the term "or" used herein is generally intended to mean "and / or". In the case where the term is unclear because it is anticipated that the ability to separate or combine is provided, the combination of components or steps will also be regarded as specified.

[0133] As used in the description herein and throughout the claims that follow, "a", "an", and "the" include plural references unless otherwise indicated. Likewise, as used in the description herein and throughout the claims that follow, the meaning of "in" includes "in" and "on" unless otherwise indicated.

[0134] The above description of the illustrated embodiments of the present invention (including the contents described in the Abstract) is not intended to be an exhaustive list or to limit the present invention to the precise form disclosed herein. Although specific embodiments of the present invention and examples of the present invention are described herein for illustrative purposes only, various equivalent modifications are possible within the spirit and scope of the present invention as will be recognized and appreciated by those skilled in the art. As noted, these modifications may be made to the present invention in accordance with the above description of the embodiments described in the present invention, and these modifications will be within the spirit and scope of the present invention.

[0135] Systems and methods have been generally described herein as details that aid in understanding the present invention. In addition, various specific details have been given to provide an overall understanding of embodiments of the present invention. However, those skilled in the relevant art will recognize that embodiments of the present invention may be practiced without one or more of the specific details, or may be practiced using other devices, systems, accessories, methods, components, materials, parts, etc. In other cases, well-known structures, materials, and / or operations are not specifically shown or described in detail to avoid confusion with various aspects of embodiments of the present invention.

[0136] Thus, although the invention has been described herein with reference to specific embodiments thereof, freedom of modification, various changes and substitutions are also within the foregoing disclosure, and it should be understood that in some cases, some features of the invention will be employed without the corresponding use of other features without departing from the scope and spirit of the proposed invention. Thus, many modifications may be made to adapt a particular environment or material to the essential scope and spirit of the invention. The invention is not intended to be limited to the specific terms used in the claims below and / or the specific embodiments disclosed as the best mode contemplated for carrying out the invention, but the invention will include any and all embodiments and equivalents falling within the scope of the appended claims. Thus, the scope of the invention will be determined solely by the appended claims.

Claims

1. A method for measuring foot structure and force characteristics, characterized in that: include: Obtain the position of the equivalent pressure action point on the outer side of the forefoot and the pressure value on the outer side of the forefoot; Obtaining the position of the equivalent action point of the inner side of the forefoot and the inner side of the forefoot pressure value; Obtain the heel pressure equivalent action point position and heel pressure value; Calculate the equivalent point of action of the plantar total force according to the equivalent point of action of the forefoot lateral pressure, the forefoot lateral pressure value, the equivalent point of action of the forefoot medial pressure, the forefoot medial pressure value, the equivalent point of action of the heel pressure, and the heel pressure value; Calculate the left-right pressure distribution index and / or the front-back pressure distribution index according to the equivalent action point position of the forefoot lateral pressure, the equivalent action point position of the forefoot medial pressure, the equivalent action point position of the heel pressure, and the equivalent action point position of the plantar total force; The left-right pressure distribution index includes a first left-right pressure distribution index or a second left-right pressure distribution index, wherein The first left-right pressure distribution index is the ratio of the area of ​​the second triangle to the area of ​​the first triangle; The second left-right pressure distribution index is the ratio of the area of ​​the third triangle to the area of ​​the first triangle; The first triangle is a triangle formed by the equivalent pressure action point position of the forefoot lateral side, the equivalent pressure action point position of the forefoot medial side, and the equivalent pressure action point position of the heel; The second triangle is a triangle formed by the equivalent action point position of the inner side of the forefoot pressure, the equivalent action point position of the heel pressure, and the equivalent action point position of the plantar concentrated force; The third triangle is a triangle formed by the equivalent action point position of the forefoot lateral pressure, the equivalent action point position of the heel pressure, and the equivalent action point position of the sole concentrated force.

2. The method for measuring foot structure and force characteristics according to claim 1, characterized in that: The obtaining of the position of the equivalent pressure action point on the outer side of the forefoot and the pressure value on the outer side of the forefoot includes: Measuring pressure values ​​at at least three different locations on the outer side of the forefoot by at least three pressure sensors; The position of the pressure equivalent action point on the outer side of the forefoot and the pressure value on the outer side of the forefoot are calculated according to the pressure values ​​of at least three different positions on the outer side of the forefoot.

3. The method for measuring foot structure and force characteristics according to claim 1, characterized in that: The obtaining of the position of the equivalent action point of the forefoot inner side pressure and the forefoot inner side pressure value comprises: Measuring pressure values ​​at at least three different locations on the inner side of the forefoot by at least three pressure sensors; The position of the pressure equivalent action point on the inner side of the forefoot and the pressure value on the inner side of the forefoot are calculated according to the pressure values ​​of at least three different positions on the inner side of the forefoot.

4. The method for measuring foot structure and force characteristics according to claim 1, characterized in that: The obtaining of the heel pressure equivalent action point position and the heel pressure value comprises: Measuring pressure values ​​at at least three different locations of the heel by at least three pressure sensors; The heel pressure equivalent action point position and the heel pressure value are calculated according to the pressure values ​​of at least three different positions of the heel.

5. The method for measuring foot structure and force characteristics according to claim 1, characterized in that: The calculating of the left-right pressure distribution index and / or the front-back pressure distribution index according to the equivalent action point position of the forefoot lateral pressure, the equivalent action point position of the forefoot medial pressure, the equivalent action point position of the heel pressure, and the equivalent action point position of the plantar total force comprises: Calculate the area of ​​a first triangle formed by the lines connecting the three points according to the positions of the equivalent pressure action points on the outer side of the forefoot, the inner side of the forefoot, and the heel; According to the positions of the equivalent action points of the pressure on the outer side of the forefoot, the equivalent action points of the pressure on the inner side of the forefoot, and the equivalent action points of the total force on the sole of the foot, the area of ​​the fourth triangle formed by the lines connecting the three is calculated; A front-rear pressure distribution index is calculated according to the area of ​​the first triangle and the area of ​​the fourth triangle, where the front-rear pressure distribution index is the ratio of the area of ​​the fourth triangle to the area of ​​the first triangle.

6. The method for measuring foot structure and force characteristics according to claim 1, characterized in that: The obtaining of the position of the equivalent pressure action point on the outer side of the forefoot and the pressure value on the outer side of the forefoot includes: Within a period of time, the positions of the equivalent action points of the pressure on the outer side of the forefoot and the pressure values ​​on the outer side of the forefoot at multiple moments are obtained at certain time intervals; The obtaining of the position of the equivalent action point of the forefoot inner side pressure and the forefoot inner side pressure value comprises: Within a period of time, the positions of the equivalent action points of the inner side of the forefoot pressure and the inner side of the forefoot pressure values ​​at multiple moments are obtained at certain time intervals; The obtaining of the heel pressure equivalent action point position and the heel pressure value comprises: Within a period of time, the heel pressure equivalent action point position and heel pressure value at multiple moments are obtained at certain time intervals; The method of calculating the equivalent action point position of the plantar total force according to the forefoot lateral pressure equivalent action point position, forefoot lateral pressure value, forefoot medial pressure equivalent action point position, forefoot medial pressure value, heel pressure equivalent action point position and heel pressure value comprises: Calculate the equivalent point of action of the plantar total force at each moment according to the equivalent point of action of the forefoot lateral pressure, the forefoot lateral pressure value, the equivalent point of action of the forefoot medial pressure, the forefoot medial pressure value, the equivalent point of action of the heel pressure and the heel pressure value at each moment; The calculating of the left-right pressure distribution index and / or the front-back pressure distribution index according to the equivalent action point position of the forefoot lateral pressure, the equivalent action point position of the forefoot medial pressure, the equivalent action point position of the heel pressure, and the equivalent action point position of the plantar total force comprises: Calculate the instantaneous left-right pressure distribution index and / or the instantaneous front-back pressure distribution index at each moment according to the equivalent action point position of the forefoot lateral pressure, the equivalent action point position of the forefoot medial pressure, the equivalent action point position of the heel pressure, and the equivalent action point position of the plantar lumped force at each moment, and obtain an instantaneous left-right pressure distribution index sequence and / or an instantaneous front-back pressure distribution index sequence; The left-right pressure distribution index and / or the front-to-back pressure distribution index is calculated according to the instantaneous left-right pressure distribution index sequence and / or the instantaneous front-to-back pressure distribution index sequence, the left-right pressure distribution index is the average value of the instantaneous left-right pressure distribution index sequence, and the front-to-back pressure distribution index is the average value of the instantaneous front-to-back pressure distribution index sequence.

7. A foot structure and force characteristics measuring device applied to the foot structure and force characteristics measuring method according to any one of claims 1 to 6, characterized in that: include: A forefoot lateral measurement module is used to obtain the position of the equivalent action point of the forefoot lateral pressure and the forefoot lateral pressure value; The inner forefoot measurement module is used to obtain the position of the inner forefoot pressure equivalent action point and the inner forefoot pressure value; Heel measurement module, to obtain the heel pressure equivalent action point position and heel pressure value; A first calculation module is used to calculate the equivalent point of action of the plantar lumped force according to the equivalent point of action of the forefoot lateral pressure, the forefoot lateral pressure value, the equivalent point of action of the forefoot medial pressure, the forefoot medial pressure value, the equivalent point of action of the heel pressure and the heel pressure value; The second calculation module calculates the left-right pressure distribution index and / or the front-back pressure distribution index according to the equivalent action point position of the forefoot lateral pressure, the equivalent action point position of the forefoot medial pressure, the equivalent action point position of the heel pressure and the equivalent action point position of the plantar total force.

8. The foot structure and force characteristics measuring device according to claim 7, characterized in that: The forefoot lateral measurement module, the forefoot medial measurement module and the heel measurement module respectively include a forefoot lateral support plate, a forefoot medial support plate and a heel support plate, and at least three force sensors are respectively arranged under the forefoot lateral support plate, the forefoot medial support plate and the heel support plate.

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