TWI743814B - The method for assessment of moving symmetry - Google Patents

Abstract

According to the method for assessment of moving symmetry of the present invention, the first receiver receives the signals of the first transmitter and the second transmitter, and the second receiver receives the signals of the first transmitter and the second transmitter. Through said first receiver and said second receiver obtain a plurality of distance, which can calculate a plurality of two-dimensional coordinate values. Meanwhile, said a plurality of two-dimensional coordinate values can calculate the first angle and the second angle, which obtains the difference between said first angle and said second angle to determine whether it is symmetry. The method provide rehabilitation for the users at home. Meanwhile, the users obtain the result of assessment of moving symmetry. In order to moving symmetry, the method can correct its own footsteps. Its cost of device is affordable and user-friendly. Therefore, the method is conducive to promotion and use.

Description

Dynamic moving symmetry assessment method

The present invention relates to a method for evaluating the symmetry of dynamic movement.

Walking is a complicated subject. The seemingly ordinary behavior is actually formed through long-term biological evolution, and it also involves the participation of many body systems, including the central nervous system, musculoskeletal system, and sensory system. Therefore, Any system damage may lead to failure to walk normally. In order to further analyze gait performance and find out the characteristics of gait damage, it is necessary to provide complete and quantitative biomechanics as a reference standard for evaluation, such as gait Time and space parameters, which include frequency, period, and speed; kinematic angles, such as joint mobility during walking, etc.; and dynamic angles, such as the value of force and reaction force during walking.

And most of the main gait analysis methods are used to detect the human body's gait cycle, so as to know the ideal situation of the joints of the lower limb system. Generally, the gait cycle is when the heel touches the ground until the next time it touches the ground again. The gait cycle can also be divided into a stance phase and a swing phase. As age increases, muscle strength due to diseases, joint stiffness, etc. will affect the gait cycle, the earliest gait analysis and evaluation adopts Visual observation, such as the footprint method, is to apply ink on the soles of the feet and walk on white paper to measure the distance including step width and stride length, so as to calculate the gait cycle and the center of gravity and angle of the gait.

In recent years, gait analysis has become more diversified, such as a foot switch. It is a miniature electronic switch that is installed on an insole-shaped measuring board and placed on the forefoot and heel. The cushion switch starts to trigger the switch on the heel when the heel touches the ground. , And when the forefoot touches the ground, the switch on the forefoot is triggered to obtain the trigger time and walking cycle from the heel switch to the forefoot switch. There is also a gait analysis method that combines the above two types, that is, the electronic gait pad, which is distributed under the pad through multiple pressure-sensitive resistors, and when the subject passes through the electronic gait pad, the plantar pressure value can be measured , And converted to digital signals, used to calculate various gait index parameters.

Refer to Patent No. TW I661820 B to provide a lower limb rehabilitation system, which performs gait analysis by wearing a smart insole. The smart insole measures the pressure signal of the foot through its pressure sensing membrane, and uses a deep learning model to analyze the gait. Including the time when the heel touches the ground, the time when the tiptoe is off the ground, the stance time, the stride length and the step length.

In addition, please refer to Patent No. TW I615129 B to provide a gait analysis system and method. It uses a foot sensing unit and a knee sensing unit to perform sensing analysis. The pressure sensing element and the inertial sensing element are used for analysis. The engine device establishes a reaction force direction model, a knee joint torque model, and a gait model, and then uses a portable device to generate gait analysis results based on these models to determine whether the gait is beneficial to the knee joint.

The aforementioned prior art mostly uses pressure sensing elements combined with complex deep learning models to obtain gait-related indicators. The cost of device construction is high, which makes its promotion not high, and the aforementioned analysis systems require professionals. And special hospitals are used as test evaluations, and if ordinary people are inconvenient to go to the special hospitals for rehabilitation evaluation, they will not be able to understand the effect of their rehabilitation in real time and whether their gait is wrong.

To this end, the present invention provides a method for evaluating the symmetry of dynamic movement, which uses a receiver set on an auxiliary device, and at the same time wears the transmitter on the lower extremities. During the rehabilitation process, the movement distance is measured in real time and the angle difference is obtained through calculation. Judging the symmetry of the movement of the feet allows the user to quickly understand the rehabilitation situation and guide the user how to perform the correct movement. At the same time, it will greatly reduce the cost of use, and does not require the assistance of specialized institutions and professionals. Perform rehabilitation exercises directly at home.

An object of the present invention is to provide a method for evaluating the symmetry of dynamic movement, which uses a receiver and a transmitter to measure the dynamic movement distance, and obtains the angle difference through calculation to determine the movement symmetry, so as to solve the conventional gait analysis needs The complex deep learning model is used to further obtain gait-related indicators, which leads to the problem of high installation cost and low promotion of the device. It does not require specialized institutions and professionals to allow users to measure and evaluate their symmetry at home. It greatly improves the efficiency of its rehabilitation assessment.

In view of the above objective, the present invention provides a method for evaluating the symmetry of dynamic movement. A first receiver correspondingly receives a signal from a first transmitter and a second transmitter, and a second receiver correspondingly receives the first transmitter. For the signal from the second transmitter, the first receiver has a predetermined coordinate value and is a predetermined distance away from the second receiver, and the steps include: the first receiver receives the first transmission respectively The first energy of the first transmitter and the second energy of the second transmitter are received by the receiver and the second transmitter, and a first distance and a second distance are respectively calculated according to the amount of energy; The second receiver receives the first transmitter and the second transmitter respectively, through receiving a third energy of the first transmitter and a fourth energy of the second transmitter, respectively, calculated according to the amount of energy Find a third distance and a fourth distance; take the preset coordinates, the preset distance, the first distance, the second distance, the third distance, and the fourth distance and calculate the distance according to a distance formula One of the first transmitters first Two-dimensional coordinates and one of the second two-dimensional coordinates of the second transmitter; move the first receiver and the second receiver; move the first transmitter and the second transmitter; the first receiver respectively receives The first transmitter and the second transmitter receive a fifth energy of the first transmitter and a sixth energy of the second transmitter, and calculate a fifth distance and a fifth distance according to the amount of energy. The sixth distance; the second receiver receives the first transmitter and the second transmitter respectively, and receives a seventh energy of the first transmitter and an eighth energy of the second transmitter according to the energy Calculate a seventh distance and an eighth distance respectively; and take the preset coordinates, the preset distance, the fifth distance, the sixth distance, the seventh distance, and the eighth distance and use the distance formula , Calculate one of the third two-dimensional coordinates of the first transmitter and one of the fourth two-dimensional coordinates of the second transmitter; wherein, the first two-dimensional coordinates and the second two-dimensional coordinates and the third The two-dimensional coordinates and the fourth two-dimensional coordinates are used to calculate a first included angle and a second included angle using a trigonometric function formula; and when it is determined that the difference between the first included angle and the second included angle is within a preset value, It is a symmetrical movement.

The present invention provides an embodiment, wherein in the step of moving the first receiver and the second receiver, the first receiver and the second receiver are moved in the Y axis.

The present invention provides an embodiment, wherein in the step of moving the first transmitter and the second transmitter, the first transmitter and the second transmitter are moved toward the Y axis.

The present invention provides an embodiment, wherein the preset value is 0.

The present invention provides an embodiment, wherein the first transmitter and the second transmitter are respectively received in the first receiver, and the first energy of the first transmitter and the second transmitter of the second transmitter are received through Before the step of calculating a first distance and a second distance respectively according to the amount of energy, the step includes the step of: a guiding device sequentially plays a guiding information, and sequentially moving the first receiver according to the guiding information, The second receiver, the first transmitter, and the second transmitter.

The present invention provides an embodiment, wherein the guiding device is a light signal device, a voice device, a display device, or a combination of the above.

The present invention provides an embodiment, wherein the guide information is a prompt light, a prompt voice, a prompt text, or a combination of the foregoing.

1: server

11: Wireless communication module

2: auxiliary device

21: The first receiver

22: second receiver

211: The first support column

212: second support column

3: wearable device

31: The first transmitter

32: second transmitter

4: guide device

A1: The first angle

A2: The second included angle

H1: The first horizontal line

H2: The second horizontal line

L1: first distance

L2: second distance

L3: third distance

L4: fourth distance

L5: Fifth distance

L6: sixth distance

L7: seventh distance

L8: Eighth distance

Lx: preset distance

S0~S15: steps

User: user

V1: The first vertical line

V2: second vertical line

(0,0): preset two-dimensional coordinates

(x1,y1): the first two-dimensional coordinates

(x2,y2): the second two-dimensional coordinates

(x3,y3): the third two-dimensional coordinates

(x4,y4): the fourth two-dimensional coordinate

(x5,y5): the fifth two-dimensional coordinate

(x6,y6): The sixth two-dimensional coordinate

The first figure: it is a method flow chart of an embodiment of the present invention; the second figure: it is a system schematic diagram of an embodiment of the present invention; and the third figure: it is a schematic operation diagram of an embodiment of the present invention; .

In order to enable your reviewer to have a better understanding and understanding of the features of the present invention and the effects achieved, I would like to provide a better embodiment and detailed explanations. The explanation is as follows: the conventional gait analysis techniques mostly use pressure The sensor is combined with a deep learning module for gait-related evaluation and measurement, which leads to the high cost of construction and low promotion of the device, and it must be installed in a specialized institution, and the gait-related measurement and interpretation are assisted by professionals. The evaluation data makes users unable to understand their own rehabilitation situation and effects in real time. Therefore, the present invention provides a dynamic movement symmetry evaluation method, which only needs to use the receiver and transmitter to measure the dynamic movement distance, and obtain the angle difference through calculation. Judging the symmetry of its movement, so that users can understand the symmetry of movement in real time during rehabilitation at home, so as to help correct their own pace. The construction cost is low, and the operation is simple and easy to use, which is good for popularization.

Hereinafter, various embodiments of the present invention will be described in detail through the use of drawings. However, the concept of the present invention may be embodied in many different forms, and should not be construed as being limited to the exemplary embodiments described herein.

First of all, please refer to the first and second figures, which are a flowchart of a method and a schematic diagram of the system according to an embodiment of the present invention. The dynamic movement symmetry evaluation system of the present invention includes a server 1, a wireless communication module 11, an auxiliary device 2, a first receiver 21, a second receiver 22, a wearable device 3, a first transmitter 31, and a second The transmitter 32 and the guiding device 4, wherein the auxiliary device 2 has a first support post 211 and a second support post 212, and the first receiver 21 and the second receiver 22 are respectively provided with a first support post 211 and a second support post 212, The wearable device 3 has a first transmitter 31 and a second transmitter 32, which are respectively worn on the left and right sides of the lower limbs of the user. It uses the first receiver 21 and the second receiver 22 to receive the first transmitter 31 and the second transmitter. The first energy and the second energy of the two transmitters 32 calculate the first distance L1, the second distance L2, the third distance L3, the fourth distance L4, the fifth distance L5, the sixth distance L6, and the seventh distance L7, and Further learn that the first two-dimensional coordinates (x1, y1), the second two-dimensional coordinates (x2, y2), the third two-dimensional coordinates (x3, y3) and the fourth two-dimensional coordinates (x4, y4), and respectively The first two-dimensional coordinates (x1, y1) obtain the extended first horizontal line H1, and the third two-dimensional coordinates (x3, y3) obtain the extended second horizontal line H2, and then the first angle is obtained according to these two-dimensional coordinates A1 and its second included angle A2, and compare the preset value according to its difference to determine whether it is symmetrical movement, and the guiding device 4 is arranged on the auxiliary device 2, and the guiding device 4 can be a light signal device, a voice device, and a display device. Device or a combination of the above, but not limited to this.

In the method for evaluating the symmetry of dynamic movement of the present invention, a first receiver 21 correspondingly receives a signal of a first transmitter 31 and a second transmitter 32, and a second receiver 22 correspondingly receives the first transmitter 31. For the signal of the second transmitter 32, the first receiver 21 has a predetermined coordinate value (0,0) and is separated from the second receiver 22 by a predetermined distance Lx, the steps include: Step S1: The first receiver receives the first transmitter and the second transmitter respectively, and receives a first energy of the first transmitter and a second energy of the second transmitter by receiving a second energy according to the energy A first distance and a second distance are calculated respectively; Step S3: The second receiver receives the first transmitter and the second transmitter, and receives a third energy and a third energy of the first transmitter. According to the fourth energy of the second transmitter, a third distance and a fourth distance are calculated respectively according to the amount of energy; step S5: take the preset distance, the first distance, the second distance, and the third distance The distance and the fourth distance are calculated according to a distance formula to obtain a first two-dimensional coordinate of the first transmitter and a second two-dimensional coordinate of the second transmitter; step S7: move the first receiver and The second receiver; step S9: move the first transmitter and the second transmitter; step S11: the first receiver receives the first transmitter and the second transmitter respectively, and receives the first transmitter A fifth energy of one of the transmitters and a sixth energy of the second transmitter are respectively calculated according to the amount of energy, a fifth distance and a sixth distance; Step S13: The second receiver receives the first transmission respectively The seventh energy of the first transmitter and the eighth energy of the second transmitter received by the receiver and the second transmitter respectively calculate a seventh distance and an eighth distance according to the amount of energy; and Step S15: Take the preset distance, the fourth distance, the fifth distance, the sixth distance, and the seventh distance, and calculate and obtain a third two-dimensional coordinate of the first transmitter and the seventh distance according to the distance formula. The fourth two-dimensional coordinates of one of the second transmitters.

As shown in step S1, when preparing to perform rehabilitation, a first measurement is performed. The distance between the user and the auxiliary device 2 is measured before the user stands statically on the auxiliary device 2 so as to be set on the auxiliary device 2 The first receiver 21 of the first support column 211 and the second support column 212 receives the first energy and the second energy of the first transmitter 31 and the second transmitter 32 of the wearable device 3, and returns it via the wireless communication module 11 It is transmitted to the server 1, and the server 1 respectively calculates the first distance L1 and the second distance L2 according to the amount of energy. Before performing step S1, it may further include step S0: step S0: a guiding device sequentially plays a piece of guidance information, and sequentially moves the first receiver, the second receiver, the first transmitter, and according to the guidance information The second transmitter.

As shown in step S0, it uses the guide device 4 to play the guide information, where the guide device 4 is a light signal device, such as each step in sequence to play the reminder light to display the measurement or the movable auxiliary device 2 or the removable wearable The prompt of the device 3 may be a voice device, such as playing a prompt voice to prompt the prompt that is currently being measured or the removable auxiliary device 2 or the removable wearable device 3, or it is a display device, and the prompt text is displayed on the display device, Allowing the user to sequentially move the auxiliary device 2 or the wearable device 3 can also be a combination of the above-mentioned devices, but not limited to this, and the purpose is to replace professionals and can easily use the present invention at home.

As shown in step S3, similarly, the third energy and the fourth energy of the first transmitter 31 and the second transmitter 32 of the wearable device 3 are received at the second receiver 22, and transmitted back to the device via the wireless communication module 11. The server 1 and the server 1 respectively calculate the third distance L3 and the fourth distance L4 according to the amount of energy.

As shown in step S5, and referring to the third figure, it is a schematic diagram of the operation of an embodiment of the present invention. The server 1 receives the preset distance Lx and the first distance L1 and the second distance L2 calculated according to the previous steps. , The third distance L3 and the fourth distance L4, the first two-dimensional coordinates (x1, y1) and the second two-dimensional coordinates (x2, y2) of the first transmitter 31 and the second transmitter 32 are obtained by the distance formula, And respectively take the first two-dimensional coordinates (x1, y1) and the second two-dimensional coordinates (x2, y2) to calculate a first included angle A1 using the trigonometric formula, where the first included angle A1 is the first two-dimensional coordinate (x1 ,y1) extends the first horizontal line H1 and the first two-dimensional coordinates (x1, y1) and the angle between the line segment formed by the second two-dimensional coordinates (x2, y2). In this embodiment, the default situation is that when standing still, the first two-dimensional coordinates (x1, y1) and The second two-dimensional coordinates (x2, y2) are horizontal, so the first horizontal line H1 is connected with the first two-dimensional coordinates (x1, y1) and the second two-dimensional coordinates (x2, y2) to form a line segment overlapping, so the first included angle A1 is 0 degrees (not shown).

Following step S7 and step S9, move the first receiver 21 and the second receiver 22 in sequence, that is, the user User moves the auxiliary device 2 to the Y axis so that the first support column 211 and the second support column 212 move to Y at the same time Axial movement, successively moving the first transmitter 31 and the second transmitter 32, that is, the user User moves his feet to the Y axis so that the wearable device 3 moves to the Y axis at the same time.

As shown in step S11, after moving the auxiliary device 2 and the wearing device 3, a second measurement is performed. After the user User dynamically moves, the distance between the wearing device 3 and the auxiliary device 2 is set in the auxiliary device 2 The first receiver 21 of the first support column 211 and the second support column 212 receives the fifth energy and the sixth energy of the first transmitter 31 and the second transmitter 32 of the wearable device 3, and calculates the first energy according to the amount of energy. Five distance L5 and sixth distance L6.

As shown in step S13, similarly, the second receiver 22 receives the seventh energy and the eighth energy of the first transmitter 31 and the second transmitter 32 of the wearable device 3, and calculates the seventh distance according to the amount of energy. L7 and the eighth distance L8.

As shown in step S15, taking the preset distance Lx and the fifth distance L5, sixth distance L6, seventh distance L7, and eighth distance L8 calculated in the previous steps, the first transmitter 31 and the first transmitter 31 and the first transmitter 31 are calculated according to the distance formula. The third two-dimensional coordinates (x3, y3) and the fourth two-dimensional coordinates (x4, y4) of the second transmitter 32, and respectively take the third two-dimensional coordinates (x3, y3) and the fourth two-dimensional coordinates (x4, y4) ) Calculate the second included angle A2 with the trigonometric function formula, where the second included angle A2 is the second horizontal line H2 extended by the third two-dimensional coordinates (x3, y3) and the third two-dimensional coordinates (x3, y3) and the first The angle between the line segments formed by connecting four two-dimensional coordinates (x4, y4), in this embodiment, The arc tangent formula of the trigonometric function formula is calculated. If Arctan[(y3-y4)/(x3-x4)]<0, then the second included angle A2 is greater than 0 and is a positive number, and the first included angle A1 is not equal to the second The included angle A2, or Arctan[(y3-y4)/(x3-x4)]>0, the first included angle A1 is also not equal to the second included angle A2, and the difference is not equal to 0 and does not meet the preset value, then It is an asymmetric movement, where the preset value is 0. On the contrary, if the first included angle A1 is equal to the second included angle A2, the difference is equal to 0, and if the preset value is met, it is a symmetrical movement.

In summary, the method of the present invention is a dynamic movement symmetry evaluation method. The receiver and transmitter can measure the static and dynamic movement distances at the same time, and the difference between the angles can be calculated to determine the movement symmetry. It is further equipped with a guide device to guide the user to operate the measurement at home, and to play the prompt light, voice, text or a combination of the above corresponding to the symmetry result, so that the user can understand the symmetry of his movement in real time, so as to facilitate correction It has a low cost of construction and easy operation, which is beneficial to popularization and use. At the same time, the present invention can also record the measured movement coordinates and trajectory in the wearable device, and provide the rehabilitation practitioner as a reference indicator.

Therefore, the present invention is really novel, progressive, and available for industrial use. It should meet the patent application requirements of my country's patent law. Undoubtedly, I filed an invention patent application in accordance with the law. I pray that the office will grant the patent as soon as possible.

However, the above are only the preferred embodiments of the present invention, and are not used to limit the scope of implementation of the present invention. For example, the shapes, structures, features and spirits described in the scope of the patent application of the present invention are equally changed and modified. , Should be included in the scope of patent application of the present invention.

S0~S15: steps

Claims (7)

A method for evaluating the symmetry of dynamic movement. A first receiver correspondingly receives a signal of a first transmitter and a second transmitter, and a second receiver correspondingly receives the first transmitter and the second transmitter. Signal, the first receiver has a predetermined coordinate value and is a predetermined distance away from the second receiver, and the steps include: The first receiver receives the first transmitter and the second transmitter respectively, and receives a first energy of the first transmitter and a second energy of the second transmitter through the received, respectively calculated according to the amount of energy Make a first distance and a second distance; The second receiver receives the first transmitter and the second transmitter respectively, through receiving a third energy of the first transmitter and a fourth energy of the second transmitter, respectively, calculated according to the amount of energy Make a third distance and a fourth distance; Take the preset coordinates, the preset distance, the first distance, the second distance, the third distance, and the fourth distance, and calculate and obtain a first two-dimensional coordinate of the first transmitter according to a distance formula And one of the second two-dimensional coordinates of the second transmitter; Move the first receiver and the second receiver; Move the first transmitter and the second transmitter; The first receiver receives the first transmitter and the second transmitter respectively, and receives a fifth energy of the first transmitter and a sixth energy of the second transmitter through the received, respectively calculated according to the amount of energy Make a fifth distance and a sixth distance; The second receiver receives the first transmitter and the second transmitter respectively, and the received seventh energy of the first transmitter and the eighth energy of the second transmitter are respectively calculated according to the amount of energy A seventh distance and an eighth distance; and Take the preset coordinates, the preset distance, the fifth distance, the sixth distance, the seventh distance, and the eighth distance, and calculate and obtain a third two-dimensional coordinate of the first transmitter according to the distance formula And one of the fourth two-dimensional coordinates of the second transmitter; Wherein, taking the first two-dimensional coordinates and the second two-dimensional coordinates, the third two-dimensional coordinates, and the fourth two-dimensional coordinates respectively to calculate a first included angle and a second included angle using a trigonometric function formula; and When it is determined that a difference between the first included angle and the second included angle is within a predetermined value, it is a symmetrical movement. According to the method for evaluating the symmetry of dynamic movement described in claim 1, wherein in the step of moving the first receiver and the second receiver, the first receiver and the second receiver are moved to the Y axis Move towards. According to the method for evaluating the symmetry of dynamic movement described in claim 1, wherein in the step of moving the first transmitter and the second transmitter, the first transmitter and the second transmitter are oriented toward the Y axis Move towards. In the method for evaluating the symmetry of dynamic movement as described in item 1 of the scope of patent application, the default value is 0. The method for evaluating the symmetry of dynamic movement as described in claim 1, wherein the first transmitter and the second transmitter are respectively received by the first receiver, and one of the first transmitters received is first Before the step of calculating a first distance and a second distance according to the amount of energy and a second energy of the second transmitter, the step includes: A guide device sequentially plays a guide information, and moves the first receiver, the second receiver, the first transmitter, and the second transmitter in sequence according to the guide information. According to the method for evaluating the symmetry of dynamic movement described in item 5 of the scope of patent application, the guiding device is a light signal device, a voice device, a display device or a combination of the above. According to the method for evaluating the symmetry of dynamic movement as described in item 5 of the scope of patent application, the guidance information is a reminder light, a reminder voice, a reminder text, or a combination of the above.

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