KR20200048914A - Harmonic motion output device of a body joints and method thereof - Google Patents

Abstract

The present invention relates to a motion analysis system and, more specifically, to a harmonic motion output device for body joints and a method thereof. To this end, the harmonic motion analysis device for body joints is applied to a first portion and a second portion of a body and joints (20) connecting the first portion and the second portion, and comprises: a first wearing portion (100) attached to the first portion; a first sensor (110) which is provided on the first wearing portion (100) and detecting the stretching of the first portion; a second wearing portion (200) attached to the second portion; a second sensor (210) provided on the second wearing portion (200) and detecting the stretching of the second portion; and a calculating portion (300) for outputting, as an electrical signal, the harmonic motion of the first portion, the second portion, and the joint (20) based on the signals (321, 331) of the first sensor (110) and the second sensor (210).

Description

Harmonic motion output device of a body joints and method thereof

The present invention relates to a motion analysis system, and more particularly, to a harmonic motion output device and method of the body joint.

In general, in order to analyze the motion of each joint in a golf swing or tennis exercise, a trajectory was used using a camera and a motion sensor. Since this method captures the movement of the arm or leg, it is not known how much force is being applied to the muscles of the limb. In other words, it is difficult to grasp muscle tension, strength, etc., because only the macroscopic motion coordinates can be known. Due to this, the exercise party practiced to faithfully follow only the movement, and the force adjustment necessary for this was inevitable.

In addition, there are not enough studies to quantitatively grasp the relationship between arm and elbow joint motions and forces, and the relationship between leg and knee joints and forces, and related applications (eg: There was a problem that the technology development of wearable robots) was delayed.

Republic of Korea Patent Publication No. 10-2016-0103852 (Publication date: September 2, 2016)

Therefore, the present invention has been devised to solve the above problems, and the problem to be solved of the present invention is to harmonize body joints to analyze movement by measuring and outputting elongation according to the harmonic movement from the muscles of the body. It is to provide a motion output device and a method.

However, the technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems that are not mentioned are clearly apparent to those skilled in the art from the following description. Will be understandable.

In order to achieve the above technical problem, in the apparatus for analyzing harmonic motion of body joints applied to a joint 20 connecting a first part and a second part of the body and the first part and the second part, the first A first wearing part 100 attached to the portion; A first sensor 110 which is provided on the first wearing part 100 and detects stretching of the first part; A second wearing part 200 attached to the second part; A second sensor 210 provided in the second wearing part 200 to sense the stretching of the second part; And electrical output signals (370) for the harmonic movement of the first part, the second part and the joint (20) based on the signals (321, 331) of the first sensor (110) and the second sensor (210). It provides a harmonic motion output device of the body joint, characterized in that it comprises ;;

In addition, the first sensor 110 is a strain sensor in which a plurality is uniformly provided in the first wearing part 100, and the second sensor 210 is a strain sensor in which a plurality is uniformly provided in the second wearing part 200. to be.

In addition, the first sensor 110 and the second sensor 210 may be formed of conductive fillers printed on the first wearing part 100 and the second wearing part 200, respectively.

On the other hand, the conductive filler includes at least one of gold and silver, and the conductive filler can be mixed with a stretchable polymer solution and printed together.

Further, a third wearing part 310 attached to the body is further included, and the calculating part 300 is provided on the third wearing part 310.

In addition, the first part and the second part are the forearm 10 and the arm 30, or the thigh and calf.

In addition, at least one of the first wearing part 100 and the second wearing part 200 includes a fabric or polymer sheet.

In order to achieve the object of the present invention as described above, as an output method using the above-described output device as another category, as the relative movement of the second part through the joint 20 relative to the first part of the body as a calculation unit ( Checking that the output signal 370 appears in 300) (S100); Obtaining an available range by moving the second part to a relatively maximum range through the joint 20 based on the first part (S200); Correcting the first sensor 110 of the first wearing part 100 and the second sensor 210 of the second wearing part 200 through repetitive movement within the available range (S300); And when the first part, the second part, and the joint 20 are repeatedly moved, the operation unit 300 harmonizes based on the output signals of the first sensor 110 and the second sensor 210. A step (S400) of outputting an output signal 370 of the exercise; is provided.

In addition, the calibration step (S300), the step of correcting the second sensor 210 while repeating the second part while the first part is fixed (S320); And calibrating the first sensor 110 while repeatedly moving the first part in a state where the second part is fixed (S340); may be performed sequentially or in reverse order.

In addition, the first sensor 110 is a strain sensor that changes resistance while stretching according to the stretching of the first wearing part 100, and the second sensor 210 while stretching according to the stretching of the second wearing part 200 It is a strain sensor whose resistance changes.

In addition, in the output step S400 of the output signal 370, the repetitive movement may be one of golf, tennis, table tennis, yoga, pilates, and fitness exercise.

According to an embodiment of the present invention, it is possible to analyze movement by measuring and outputting elongation according to harmonized movement in muscles of the body. That is, since it is possible to acquire scientific and quantitative data, it has a feature that can be used for basic design in sports science fields such as exercise physiology and applications such as wearable robots.

In addition, there is an advantage that can be used as an analysis data of muscle force for practicing posture in an event practicing swing posture such as golf, table tennis, tennis, and the like.

In addition, quantitative data can be obtained from sports that statically exert strength, such as yoga, pilates, fitness, weightlifting, etc., so it can be used as educational or analytical data.

However, the effects obtainable in the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those skilled in the art from the following description. Will be able to.

The following drawings attached in this specification are intended to illustrate preferred embodiments of the present invention, and serve to further understand the technical idea of the present invention together with the detailed description of the invention described below, and thus the present invention is described in such drawings. It is not limited to interpretation.
1 is a schematic configuration diagram of a harmonic motion output device of a body joint according to an embodiment of the present invention.
FIG. 2 is a state diagram schematically showing a state in which the output device shown in FIG. 1 is worn on an arm.
3 is a block diagram showing the configuration of the operation unit 300 in FIG. 1.
4 is a graph showing a change in resistance when the strain sensor used in the present invention is stretched over time.
5 is a graph showing a change in resistance when the harmonic motion output device according to the present invention is repeatedly stretched 20%.
6 is a flowchart illustrating a method for outputting a harmonic motion of a body joint according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art to which the present invention pertains may easily practice. However, since the description of the present invention is only an example for structural or functional description, the scope of the present invention should not be interpreted as being limited by the examples described in the text. That is, since the embodiments can be variously changed and have various forms, it should be understood that the scope of the present invention includes equivalents capable of realizing technical ideas. In addition, the purpose or effect presented in the present invention does not mean that a specific embodiment should include all of them or only such an effect, and the scope of the present invention should not be understood as being limited thereby.

The meaning of the terms described in the present invention should be understood as follows.

Terms such as "first" and "second" are for distinguishing one component from other components, and the scope of rights should not be limited by these terms. For example, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. When a component is said to be "connected" to another component, it should be understood that other components may exist in the middle, although they may be directly connected to the other component. On the other hand, when a component is said to be "directly connected" to another component, it should be understood that no other component exists in the middle. On the other hand, other expressions describing the relationship between the components, that is, "between" and "immediately between" or "neighboring to" and "directly neighboring to" should be interpreted similarly.

Singular expressions are to be understood to include plural expressions unless the context clearly indicates otherwise, and terms such as "comprises" or "have" include the features, numbers, steps, actions, components, parts or components described. It is to be understood that a combination is intended to be present, and should not be understood as pre-excluding the existence or addition possibility of one or more other features or numbers, steps, actions, components, parts or combinations thereof.

All terms used herein have the same meaning as generally understood by a person skilled in the art to which the present invention pertains, unless otherwise defined. The terms defined in the commonly used dictionary should be interpreted to be consistent with meanings in the context of related technologies, and cannot be interpreted as having ideal or excessively formal meanings unless explicitly defined in the present invention.

Example  Configuration

Hereinafter, the configuration of the preferred embodiment will be described in detail with reference to the accompanying drawings. 1 is a schematic configuration diagram of a harmonic motion output device of a body joint according to an embodiment of the present invention. As shown in FIG. 1, the output device of the present invention is largely composed of a first wearing part 100, a second wearing part 200, and a third wearing part 310.

The first wearing part 100 is made of a stretchable fabric or polymer sheet, and is shaped to be wrapped around an arm, leg or joint (eg, in the form of a Velcro tape) or fitted (eg, Toshi).

The first sensor 110 is a strain sensor that is integrally printed or attached to the first wearing part 100 to stretch (stretch or shrink) together with the first wearing part 100. To this end, the first sensor 110 is prepared by mixing a conductive filler (eg, gold microparticles, silver microparticles, silver nanoparticles, etc.) in a stretchable rubber solution (eg PDMS, ECOFLEX, DAI-EL G801, etc.). 1 Molded by printing on the surface of the wearing part 100 (for example, using an ink printer). For this reason, the resistance value of the first sensor 110 changes while being stretched together with the first wearing part 100. The change in the resistance value is sensed by the operation unit 300 as a change in voltage to enable filing.

Specifically, the first sensor 110 has a “c” shape, and is configured such that the first wires 130 are connected to both ends. Optionally, in order to increase the sensitivity of the first sensor 110, the length of the path can be lengthened by repeatedly forming a zigzag between both ends. A plurality of such first sensors 110 are provided at a uniform interval on the first wearing part 100 (for example, 2 to 10). In addition, each of the first wires 130 connected from the plurality of first sensors 110 is all connected to the calculation unit 300.

The second wearing part 200 and the second sensor 210 have the same configuration as the first wearing part 100 and the first sensor 110, respectively.

The third wearing part 310 is positioned between the first wearing part 100 and the second wearing part 200 and is made of the same material as the first and second wearing parts 100 and 200. Optionally, the third wearing part 310 may be integrally configured on the first wearing part 100 or the second wearing part 200.

The calculation unit 300 is provided on the third wearing unit 310, a flexible printed circuit (FPCB), a printed circuit board (PCB), electronic components on the board (eg, microcomputer, memory, resistor, capacitor, etc.), input / output It is composed of a port, a power source (for example, a battery), and a communication unit (wired or wireless). The detailed internal configuration of the operation unit 300 will be described in FIG. 3.

FIG. 2 is a state diagram schematically showing a state in which the output device shown in FIG. 1 is worn on an arm. As illustrated in FIG. 2, the first wearing part 100 is tightly wound and worn on the forearm 10, and the second wearing part 200 is tightly wound on the arm 30 and worn. In addition, the third wearing part 310 is positioned at the joint 20 (elbow). On the other hand, as an optional use example, if necessary, the first wearing part 100 may be wound around the joint 20 (elbow).

3 is a block diagram showing the configuration of the operation unit 300 in FIG. 1. As shown in FIG. 3, the first input unit 320 and the second input unit 330 are provided on both sides of the operation unit 300. This is to connect the first wiring 130 and the second wiring 230 that are respectively electrically connected from the first sensor 110 and the second sensor 210.

The first input unit 320 enables an electrical connection with the movable first wire 130 including a flexible printed circuit, and may output a voltage value including a full bridge circuit or the like. The first input unit 320 includes an analog-to-digital converter (ADC) circuit to convert an analog input first signal 321 into a digital signal. The second input unit 330 has the same circuit configuration as the first input unit 320 symmetrically.

The first amplification unit 322 is provided between the first input unit 320 and the first filter 324 to amplify the input first signal 321 to a predetermined level. The first filter 324 is provided between the first amplification unit 322 and the control unit 350 to remove unnecessary noise (high frequency noise) from the amplified signals. The order of the first amplifier 322 and the first filter 324 may be changed depending on the circuit configuration. The second amplification unit 332 has the same circuit connection symmetrically with the same configuration as the first amplification unit 322. The second filter 334 has the same circuit connection as the first filter 324 symmetrically.

The control unit 350 receives the first and second signals 321 and 331 and continuously outputs a change in resistance value (or change in voltage value) according to a change in time. The control unit 350 is provided with a memory to store continuously output signals. The control unit 350 may be implemented by a CPU (central operation unit) or MICOM (microcom).

The output unit 360 is connected to the control unit 350 and outputs the output signal 370 generated by the control unit 350 through a port or wired / wireless communication (eg, Zigbee, Wi-Fi, infrared communication, Bluetooth, 3G, wireless LAN, etc.). Transfer to the outside.

Example  action

Hereinafter, the operation of the preferred embodiment will be described in detail with reference to the accompanying drawings. 6 is a flowchart illustrating a method for outputting a harmonic motion of a body joint according to an embodiment of the present invention. First, as shown in FIG. 2, the first wearing part 100 is securely worn on the forearm 10, and the second wearing part 200 is securely worn on the arm 30, so that the third wearing part 310 in the joint 20 area is provided. ).

Next, by moving the arm 30 several times while the forearm 10 is fixed, it is checked whether the output signal 370 is output to the operation unit 300 (S100). In the checking step S100, the output signal 370 may be connected to an unillustrated instrument (eg, an oscilloscope or an FFT) to confirm the change in the displayed waveform.

Then, in the state where the forearm 10 is fixed, the arm 30 is moved several times between the maximum bent state and the maximum unfolded state. As a result, an available range (eg, 150 °) at which the arm 30 can swing maximum is obtained (S200).

Then, the first sensor 110 of the first wearing part 100 and the second sensor 210 of the second wearing part 200 are corrected through repetitive movements within an available range (eg, 150 °) ( S300). Specifically, the first and second sensors 110 and 210 are corrected while the arm 30 is repeatedly exercised while the forearm 10 is fixed (S320). Then, the first and second sensors 110 and 210 are corrected while repeating the forearm 10 while the arm 30 is fixed (S340). The specific calibration steps SS320 and S340 may be performed sequentially or in reverse order, or only one of the two steps may be performed and corrected.

The correction step (S300) is to obtain data within a standardized range because body characteristics of each wearer are different. Specifically, the maximum and minimum values of the first and second signals 321 and 331 are adjusted, and a signal input between the maximum and minimum values is subdivided (eg, 100 or 200 steps) to correct the signal resolution.

Then, the forearm 10 and the arm 30 are repeatedly moved. The movement of this moment belongs to golf, tennis, table tennis, yoga, pilates, and fitness. And, if necessary, by lifting a heavy weight (eg, 5Kg) on the hand 40, the force acting on the muscles can be different. As the first and second sensors 110 and 210 are stretched, the resistance values change, and these resistance values are the first and second signals 321 and 331, and the first and second input units 320 and 330, and the first and second resistance values. It is transmitted to the control unit 350 through the amplification unit (322, 332) and the first and second filters (324, 334).

The control unit 350 generates an output signal 370 of the harmonic motion based on the inputted output signals (S400), and the generated output signal 370 is transmitted to the outside through the output unit 360. .

For reference, FIG. 4 is a graph showing a change in resistance when the first and second sensors 110 and 210 used in the present invention are stretched over time. As shown in FIG. 4, in the initial state, the resistance value, which was almost 0 Ω, changes to 100 Ω when stretched at 30%, increases to about 250 Ω when stretched at 50%, and recovers to 0 Ω as the elongation decreases again. Can be seen.

5 is a graph showing a change in resistance when the harmonic motion output device according to the present invention is repeatedly stretched 20%. As shown in FIG. 5, it can be confirmed that an output signal (eg, a sine wave curve) of uniform harmonic motion is output over time. Therefore, by using the apparatus for outputting the harmonic motion of the present invention, it is possible to acquire quantitative harmonic motion data for muscles and joints.

Variation

As a modified example of the present invention, the first and second wearing parts 100 and 200 may be measured by wearing them on the thighs and calves in addition to the forearm 10 and the arms 30 or on the waist and pelvis. Also, the first wearing part 100 may be worn on a joint part (elbow or knee) in addition to the muscle.

The detailed description of preferred embodiments of the present invention disclosed as described above has been provided to enable those skilled in the art to implement and practice the present invention. Although described above with reference to preferred embodiments of the present invention, those skilled in the art will appreciate that various modifications and changes can be made to the present invention without departing from the scope of the present invention. For example, those skilled in the art can use each of the configurations described in the above-described embodiments in a manner of combining with each other. Accordingly, the present invention is not intended to be limited to the embodiments presented herein, but to give the broadest scope consistent with the principles and novel features disclosed herein.

The invention may be embodied in other specific forms without departing from the spirit and essential features of the invention. Accordingly, the above detailed description should not be construed as limiting in all respects, but should be considered illustrative. The scope of the invention should be determined by rational interpretation of the appended claims, and all changes within the equivalent scope of the invention are included in the scope of the invention. The invention is not intended to be limited to the embodiments presented herein, but rather to give the broadest scope consistent with the principles and novel features disclosed herein. In addition, claims that do not have an explicit citation relationship in the claims can be combined to form an embodiment or included as a new claim by correction after filing.

10: forearm
20: joint (elbow),
30: arm,
40: hand,
100: first wearing part,
110: first sensor,
130: first wiring,
200: second wearing part,
210: second sensor,
230: second wiring,
300: operation unit,
310: third wearing part,
320: first input unit,
321: first signal,
322: first amplification unit,
324: first filter,
330: second input unit,
331: second signal,
332: second amplification unit,
334: second filter,
350: control unit,
360: output unit,
370: output signal,

Claims (12)

In the apparatus for analyzing the harmonic motion of a body joint applied to the joint 20 connecting the first part and the second part of the body and the first part and the second part,
A first wearing part 100 attached to the first portion;
A first sensor 110 which is provided on the first wearing part 100 and detects stretching of the first part;
A second wearing part 200 attached to the second part;
A second sensor 210 provided in the second wearing part 200 to detect the stretching of the second part; And
Electrical output signal 370 for the harmonic movement of the first part, the second part and the joint 20 based on the signals 321 and 331 of the first sensor 110 and the second sensor 210 Computation unit 300 for outputting; Harmonic movement output device of the body joint comprising a. According to claim 1,
The first sensor 110 is a harmonic motion output device of the body joint, characterized in that the strain sensor is provided with a plurality of uniformly in the first wearing portion (100). According to claim 1,
The second sensor 210 is a harmonic motion output device of the body joint, characterized in that the strain sensor is provided with a plurality of uniformly in the second wearing portion (200). The method according to claim 2 or 3,
The first sensor 110 and the second sensor 210 are formed of conductive fillers printed on the first wearing part 100 and the second wearing part 200, respectively. Harmonic output device. The method of claim 4,
The conductive filler includes at least one of gold and silver,
The conductive filler is mixed with an extensible polymer solution and printed together. According to claim 1,
Further comprising a third wearing portion 310 attached to the body, and
The operation unit 300 is a harmonic motion output device of the body joint, characterized in that provided on the third wearing unit (310). According to claim 1,
The first part and the second part are the forearm 10 and the arm 30, or thigh and calf. According to claim 1,
At least one of the first wearing part 100 and the second wearing part 200 comprises a fabric or polymer sheet Harmonic exercise output device of the body joints. An output method using the output device according to any one of claims 1, 2, 3, 6, 7, and 8,
Confirming that the output signal 370 is output to the operation unit 300 as a relative movement of the second part through the joint 20 based on the first part of the body (S100);
Obtaining an available range by moving the second part to a relatively maximum range through the joint 20 based on the first part (S200);
Correcting the first sensor 110 of the first wearing part 100 and the second sensor 210 of the second wearing part 200 through repetitive movement within the available range (S300); And
When the first part, the second part, and the joint 20 are repeatedly moved, the operation unit 300 harmonizes based on the output signals of the first sensor 110 and the second sensor 210. Outputting the output signal (370) of the exercise (S400); Harmonic exercise output method of the body joint comprising a. The method of claim 9,
The calibration step (S300),
Compensating the second sensor 210 while repeating the second portion while the first portion is fixed (S320); And
The step of calibrating the first sensor 110 while repeating the first part in a state where the second part is fixed (S340); a method of outputting a harmonic motion of a body joint, characterized in that it is executed sequentially or in reverse order. . The method of claim 9,
The first sensor 110 is a strain sensor that changes resistance while stretching according to the stretching of the first wearing part 100, and
The second sensor 210 is a strain sensor in which resistance changes while stretching according to the stretching of the second wearing part 200. The method of claim 9,
In the output step (S400) of the output signal 370, the repetitive movement is one of golf, tennis, table tennis, yoga, pilates, and fitness exercise.

Images