KR102269888B1 - Tdevice to test the performance of pressure sensor of smart shoes - Google Patents

Abstract

Disclosed is a performance testing apparatus for a pressure sensor for smart shoes. In accordance with the present invention, the performance testing apparatus for the pressure sensor for the smart shoes is to test the performance of the pressure sensor mounted on a bottom surface of the smart shoes, comprising: a foot-shaped upper pressing unit fixed on a lower side of a first frame and inserted into the shoes; one or more lower pressing units placed at a position corresponding to the pressure sensor by being fixed on an upper side of a second frame which is placed on a lower side of the first frame by being apart from the first frame; and an operation unit which varies the distance between the first frame and the second frame to apply the pressing force controlled through the bottom surface of the upper pressing unit and the lower pressing unit to the pressure sensor. In accordance with the present invention, the performance testing apparatus is able to consistently and reliably determine the presence or absence of any defect and the normal or abnormal operation of the pressure sensor mounted on the bottom surface of the smart shoes and the accuracy or inaccuracy of pressure measurement when the pressure sensor is used, even without a manual work by a worker or a damage or cut on the finished shoes, and the universal quality control and maintenance for the smart shoes can be conveniently and rapidly conducted.

Description

Performance test device for pressure sensor of smart shoes {TDEVICE TO TEST THE PERFORMANCE OF PRESSURE SENSOR OF SMART SHOES}

The present invention relates to a performance testing device for a pressure sensor of a smart shoe, and more particularly, to a performance testing device for evaluating the performance of a pressure sensor mounted on an outsole of a smart shoe, such as operation or sensitivity.

With the advancement of technology in the industrial field, the demand for a sensor that can measure with high precision and high reliability even under adverse conditions such as high temperature or cryogenic temperature beyond daily use is increasing, and the development of various sensor technologies is actively developing. is in progress

Such sensor technology is leading to more compact and complex multi-functional smart sensor technology thanks to the steady development of semiconductor technology and micro-machining technology in recent years.

Among various sensor technologies, a pressure sensor is an element for measuring a predetermined force or pressure applied from the outside. , environmental control, electrical appliances, household clothes, etc., the scope of its application is broadly expanding.

Among the fields of application of the pressure sensor, in the case of an industrial field having a large combustion furnace such as energy or steel, advanced management and control technology is required to reduce energy or improve combustion efficiency by measuring the flow rate of intake/exhaust gas or fuel. In this case, the pressure sensor is treated as a key element.

In addition, in the field of household goods and clothing, in addition to the giant device industry, the pressure sensor is mounted on clothes and the like according to the rapid development of wearable technology and is directly utilized for convenience in real life.

For example, among wearable products, smart shoes equipped with a pressure sensor on the bottom surface of a shoe, that is, an outsole or a midsole, include a communication module interlocking with a smartphone as shown in FIG. 1 to measure the pressure distribution applied to the soles of the feet. This product was developed so that you can easily check the exercise posture based on the basics.

These smart shoes have the advantage of improving the exercise effect in that they immediately provide a variety of information that can easily identify and correct incorrect exercise postures that users do not recognize, going beyond the conventional shoe concept.

Although such exercise-related information is measured and provided only depending on the pressure sensor, whether the pressure sensor is defective or whether the pressure measurement is accurate when using it is a key factor in quality control or maintenance of smart shoes. , the prior art discloses only a technology for a device that simply evaluates the degree of wear performance with a general footwear finished product, such as Republic of Korea Patent No. 10-1812422 (announcement date: January 30, 2018), etc. There is a need for special handling of the mounted smart shoes.

In addition, since it is placed on the bottom surface of the inside of the shoe that is difficult to access when the finished shoe is not damaged or cut, the consistency and reliability of the pressure sensor, which has to be done manually by the operator, or whether the pressure measurement is accurate when used, etc. Research and development of devices that can be tested or evaluated are required.

It is an object of the present invention to present a standard that can accurately and reliably test and evaluate performance such as whether there is a defect or malfunction, accuracy and speed of measurement, etc. in relation to a pressure sensor mounted on a smart shoe for checking an exercise posture On the other hand, it is to provide a performance test device for pressure sensor of smart shoes that can be used universally for evaluation of smart shoes.

The above object is an apparatus for testing the performance of a pressure sensor mounted on the bottom surface of a smart shoe, comprising: an upper compression unit in the shape of a foot fixed to the lower side of the first frame and inserted into the shoe; a lower pressure part fixed to the upper part of the second frame spaced apart from the lower part of the first frame and disposed at least one or more at a position corresponding to the pressure sensor; and an operation unit for varying the separation distance between the first frame and the second frame so that a pressing force controlled through the lower surface of the upper pressing unit and the lower pressing unit is applied to the pressure sensor. This is achieved by a performance testing device for sensors.

The operation unit, one or more guide bars installed between the first frame and the second frame to guide the relative movement of any one of the first frame and the second frame; and a driving means provided in the first frame to force the first frame to move linearly toward the second frame according to the guidance of the guide bar.

The driving means includes a power unit coupled to the first frame, a screw shaft elongated toward the second frame in a state of being connected to the power unit, and a screw shaft provided in the second frame and screwed with the screw shaft. It may be a ball screw including a nut or a hydraulic cylinder that linearly reciprocates a piston with the pressure of a fluid provided from a pump.

The first frame and the second frame are made to be separated at a maximum separation distance by the driving means, and at one side of the guide bar, the shoe is smoothly inserted into the upper compression unit, the first A rotating part for guiding one of the frame and the second frame to rotate relative to the other in the vertical direction may be further provided.

The performance testing device may further include a control unit that is wirelessly connected to the communication module mounted on the shoe and receives and processes the pressure information measured from the pressure sensor pressurized according to the variable operation of the operation unit.

The upper compression part is divided back and forth based on the central part corresponding to the arch of the foot, and consists of a ball part of the front end and a heel part of the rear end, and the ball part is stretched and contracted back and forth with respect to the heel part in response to the size of the shoe under test It can be slidably coupled as much as possible.

Pressing protrusions protruding downward corresponding to the arrangement of the pressure sensor may be provided on the foot ball part and the heel part, respectively.

According to the present invention, a foot-shaped upper compression part fixed to the lower side of the first frame and inserted into the shoe, and at least one lower part disposed at a position corresponding to the pressure sensor on the upper surface of the second frame spaced apart from the first frame As a pressing force controlled by the pressure sensor is applied to the pressure sensor through the pressing unit and the operating unit that varies the separation distance between the first frame and the second frame, the bottom of the smart shoe does not require manual work by the operator or damage or cutting of the finished shoe. Defective or normal operation of the pressure sensor mounted on the surface, or whether the pressure measurement is accurate during use, can be determined consistently and reliably, so that general-purpose quality control and maintenance of smart shoes can be performed simply and quickly. be able to

1 is a view showing the general appearance and structure of a smart shoe equipped with a pressure sensor.
2 is a perspective view illustrating a performance testing apparatus for a pressure sensor of a smart shoe according to an embodiment of the present invention.
3 is an exploded view of FIG. 1 .
4 is an operation state diagram illustrating the wearing process of smart shoes step by step based on a cross-sectional view taken along the cut line AA of FIG. 2 .
5 is an operation state diagram illustrating a performance test process of a pressure sensor mounted on a smart shoe step by step based on a cross-sectional view taken along the cut line AA of FIG. 2 .
6 is a cross-sectional view showing a performance testing apparatus for a pressure sensor of a smart shoe according to a modified example of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in describing the present invention, descriptions of already known functions or configurations will be omitted in order to clarify the gist of the present invention.

1 is a view showing the general appearance and structure of a smart shoe equipped with a pressure sensor, FIG. 2 is a perspective view showing a performance test apparatus for a pressure sensor of a smart shoe according to an embodiment of the present invention, and FIG. 3 is FIG. 4 is an operational state diagram showing the wearing process of smart shoes step by step based on a cross-sectional view taken along the cut line AA of FIG. 2, and FIG. 5 is a smart shoe based on a cross-sectional view taken along the cut line AA of FIG. It is an operation state diagram showing the performance test process of the mounted pressure sensor step by step, and FIG. 6 is a cross-sectional view showing a performance testing apparatus for a pressure sensor of a smart shoe according to a modified example of the present invention.

Top (top), bottom (bottom), left and right (side or lateral), front (front, front), back (back, back), etc., which refer to directions in the description and claims of the invention, are not used for limiting rights. For convenience of explanation, it is determined based on the relative position between the drawings and the configuration, and the three axes may be rotated to correspond to each other and changed, except where specifically limited otherwise.

Before the description of the present invention, the smart shoe 10, which is the test subject of the invention, is, as shown in FIG. 1 , at least one or more at a predetermined point among the bottom surfaces 12 of the shoe 10 irrespective of the name. A thin sheet-shaped pressure sensor 20 that is mounted and measures the pressure applied to the sole, a communication module 30 that transmits measurement data or receives a control command in connection with the pressure sensor 20 in conjunction with a smartphone It refers to the shoe 10, including the back.

At this time, the pressure sensor 20 is a sheet-shaped sensor in which a grid-shaped resistance wire or a resistance foil processed by photolithography is wired on a grid on an electrical insulator and a lead wire is connected, and a resistance value that changes depending on the degree of deformation of the resistance wire, etc. It is possible to measure the magnitude of the external force, that is, the pressure based on the

Such a pressure sensor 20, as shown in FIG. 1, a pressure sensor 20 for measuring the pressure applied to the heel, a pressure sensor 20 for measuring the pressure applied to the inside and outside of the ball of the foot, and the toe It may be composed of a pressure sensor 20 or the like for measuring the pressure applied to the part.

The smart shoe 10 equipped with one or more pressure sensors 20 as described above transmits the pressure distribution of the soles measured during wearing to a smart phone, etc. to easily check the wrong exercise posture or body balance that the user did not recognize, and walk However, it has a unique feature of improving the exercise effect by providing various information related to the posture and the like for each exercise to the user.

However, since the pressure sensor 20 of the smart shoe 10 is a structure that is deeply disposed on the bottom surface 12 of the inside of the shoe 10, it is necessary to determine whether the pressure sensor 20 is defective or whether the pressure measurement is accurate when used. For this, the operator had no choice but to test after directly wearing the smart shoes 10, or to manually press the pressure sensor 20 part by putting the pressurizing means into the smart shoes 10, and even according to this, a pair of It was difficult to accurately and objectively determine whether the pressure sensors 20 of the smart shoes 10 were synchronized with each other at the same sensitivity level.

The performance test apparatus 100 for a pressure sensor of a smart shoe according to the present invention devised to improve a test method by an operator who is subjective and difficult to guarantee accuracy is a smart shoe without damaging or cutting the finished smart shoe 10 . It is possible to determine whether the pressure sensor 20 mounted on the bottom surface 12 of the shoe 10 is defective or operates normally, and whether the sensitivity of the pressure sensor 20 is accurate, and the pressure sensor 20 for a pair ) is also made to be determined consistently and reliably.

In order to specifically implement the functions or actions as described above, the performance test apparatus 100 for a pressure sensor of a smart shoe according to the present invention, as shown in FIGS. 2 to 5 , an upper compression unit 110, As shown in the embodiment including the lower compression part 120 and the operation part 130, and the like, as shown in FIG. 6, it is divided into a ball part 110a and a heel part 110b to the size of the smart shoe 10. It may be configured as a modified example including the upper compression unit 110, the length of which is variable accordingly.

Hereinafter, each of the above-described components will be described in detail.

First, the upper pressure unit 110 is inserted into the smart shoe 10 described above in a state of being fixed to the lower side of the first frame 112, and the pressure sensor mounted on the bottom surface 12 of the smart shoe 10 ( 20) as a component that directly presses the upper surface, as shown in FIGS. 2 to 3 , it can be manufactured in a shape corresponding to the shape of a foot rather than a simple column shape.

At this time, the reason that the upper pressure part 110 is manufactured in the shape of a foot is not only the heel part of the inside of the smart shoe 10, but also the pressure sensor 20 disposed on the ball of the foot and the toe part inside the smart shoe 10. This is to ensure that even pressurization is performed smoothly.

The first frame 112 is spaced apart from the upper portion of the second frame 122 to be described later to provide a space in which the upper pressing unit 110 is fixed, while the second frame ( As a component that moves relative to 122), a plate shape to which the foot-shaped upper compression unit 110 can be fixed is sufficient, and the specific shape is not particularly limited.

The upper pressure unit 110 is made of a metal material with a high hardness for smooth pressurization of the pressure sensor 20 embedded in the bottom surface 12 of the smart shoe 10 in the form of a thin sheet, or, if necessary, the body It can be made of synthetic resin having elasticity similar to that of

The lower pressure unit 120 is in contact with the bottom surface 12 of the smart shoe 10 together with the above-described upper pressure unit 110 for pressing the upper surface of the pressure sensor 20 inside the smart shoe 10 to contact the pressure sensor. As a component that directly presses the lower surface of (20), as shown in FIGS. 2 to 3, the pressure sensor 20 above the second frame 122 spaced apart from the lower side of the first frame 112. At least one may be arranged and fixed at a position corresponding to .

The lower pressure unit 120 is made of a permanent magnet of a predetermined thickness that is selectively attached to and detached from the second frame 122 made of a ferromagnetic material in response to the arrangement and number of the pressure sensors 20 mounted on the smart shoe 10 . Alternatively, it may be formed by protruding from the second frame 122 corresponding to the arrangement and number of the pressure sensors 20 mounted on the smart shoe 10 .

At this time, the lower compression unit 120 made of a permanent magnet can be universally used in various types of smart shoes 10 through a free position change of the lower compression unit 120 with respect to the second frame 122 . .

The second frame 122 is spaced apart from the lower portion of the above-described first frame 112 to provide a space in which the lower compression unit 120 is fixed, while the first frame ( As a component for relative movement with respect to 112), a plate shape in which a plurality of lower pressing parts 120 can be fixed or formed is sufficient, and a specific shape is not particularly limited.

The operation unit 130 includes the first frame 112 and the second frame 122 so that the pressing force controlled through the lower surface of the upper pressing unit 110 and the lower pressing unit 120 is applied to the pressure sensor 20 . As a component for varying the distance between the two, as shown in FIGS. 2 to 5 , it may be configured to include a guide bar 132 and a driving means 134 .

Here, the guide bar 132 guides the relative movement of any one of the first frame 112 and the second frame 122 so that the separation distance between the first and second frames 112 and 122 is constantly variable without being inclined. It is a component of rod formation prepared for

One or more guide bars 132 have a structure in which one end is coupled to the second frame 122 between the first frame 112 and the second frame 122 , and the other end passes through the first frame 112 . This can be installed.

The driving means 134 is a component provided in the first frame 112 to force the linear movement of the first frame 112 with respect to the second frame 122 according to the guidance of the guide bar 132 described above. As a result, any driving method may be used as long as it is a commercially available device that enables linear motion of any one of the first frame 112 and the second frame 122 .

That is, the driving means 134 is a hydraulic cylinder (HC) method (shown for reference in FIG. 2 and the like) that linearly reciprocates the piston coupled to the first frame 112 or the second frame 122 with the pressure of the fluid provided from the pump. ), and is connected to a rack gear elongated in the vertical direction, and a power unit M such as a motor coupled to the first frame 112 or the second frame 122 to mesh with the rack gear. It can be implemented in a manner consisting of a pinion gear that moves on the rack gear according to the forward and reverse rotation.

In addition, the driving means 134, a pair of pulleys associated with the power unit M such as a motor and one side are engaged with the pulley in a state coupled to the first frame 112 or the second frame 122, It may also be implemented in a manner consisting of a belt disposed over a pair of pulleys.

However, as shown in FIGS. 2 to 5, the driving means 134 according to the embodiment of the present invention has a simple structure, is easy to maintain, and is a power device ( M), a screw shaft (S) and a nut portion (N) is implemented in a ball screw method including.

Here, the power unit M is a component coupled to the first frame 112 made of a commercially available device such as a motor operated and controlled by the controller 140 to be described later.

And the screw shaft (S) is a component directly connected to the above-described power device (M) such as a motor made of a rod shape having a male thread formed on the outer circumferential surface, and the nut portion (N) is a female screw thread formed on the inner circumferential surface. It is a component that is screwed with the screw shaft (S) and linearly moves the first frame (112) up and down according to the forward and reverse rotation of the screw shaft (S).

As the separation distance between the first frame 112 and the second frame 122 is freely varied by the ball screw type driving means 134 , the upper pressure on the pressure sensor 20 mounted in the smart shoe 10 . The pressing operation of the part 110 and the lower pressing part 120 can also be made freely as shown in FIG. 5 .

On the other hand, when the ball screw type driving means 134 operates so that the separation distance between the first and second frames 112 and 122 is maximized, as shown in (a) of FIG. 4 , the screw shaft S is a nut Separated from the part N, the first frame 112 and the second frame 122 are in a state in which they can be separated from each other.

At this time, on one side of the guide bar 132, as shown in FIGS. 2 and 4, any one of the first frame 112 and the second frame 122 is guided to rotate relative to the other in the vertical direction. By being further provided with a rotating part 133 that is, the insertion of the shoe 10 into the upper compression part 110 as shown in FIG. 4 (b) can be made smoothly and easily.

The control unit 140 is wirelessly connected to the communication module 30 mounted on the smart shoe 10 and receives the pressure information measured from the pressure sensor 20 that is pressurized according to the variable operation of the above-described operation unit 130 . As a component for processing and processing, it may be installed on one side of the second frame 122 as shown in FIGS. 2 to 3 , or alternatively installed on one side of the first frame 112 .

This control unit 140, specifically, the power unit (M) of the above-described driving means 134, the hydraulic cylinder (HC), the power unit (M) of the expansion and contraction unit 116 to be described later, etc. in a state of being electrically connected to these MCU that controls the operation and wirelessly connects to the communication module 30 of the smart shoe 10 fitted in the upper compression unit 110 as a test object to receive and process the pressure information measured from the pressure sensor 20 (micro controller unit), a microcomputer, a modular information processing unit such as an Arduino, a display device that visually displays transmitted and processed information, and a button for setting control operation. .

A series of processing processes of the control unit 140 for controlling each device connected by wire or wirelessly as above, processing, displaying, and storing the received pressure information, etc., include C, C++, which can be read through the information processing unit described above. This is done by coding in a programming language such as JAVA or machine language, and this can be easily done in various ways and forms at the level of those skilled in the art, so a detailed description thereof will be omitted.

On the other hand, the performance test apparatus 100 for a pressure sensor of a smart shoe according to a modified example of the present invention, as shown in FIG. 6 , the upper compression unit 110 in the configuration of the embodiment to the size of the smart shoe 10 . It can be made by deforming it so that the length is variable according to it.

For the specific implementation of the above functions or actions, the upper compression part 110 according to a modified example includes the front part of the foot ball part 110a and the rear part of the heel part 110b divided based on the central part corresponding to the arch of the foot, It may be configured to include a stretchable portion 116 and a pressing protrusion 118 .

The ball part 110a is a component having a shape corresponding to the ball of the foot and the toe region in the front with respect to the arch of the foot, and the heel part 110b is made in a shape corresponding to the heel of the rear based on the arch of the foot, and the upper end is a component coupled to the first frame 112 .

The elastic part 116 is forced to perform a forward and backward expansion and contraction operation with respect to the heel part 110b through the control operation of the controller 140 in response to the size of the smart shoe 10, which is the test object. As a component, it may be composed of the power unit M, the screw shaft S, the nut portion N, the slide bar 114a and the slide groove 114b as described above.

Here, the power unit M is a component implemented as a motor, etc., which is built into the heel part 110b and is operated and controlled by the control unit 140, as shown in FIG. 6, and the screw shaft S is a power unit. (M) is a component that is screwed to the nut portion (N) formed on the ball part (110a) in a coupled state to increase or decrease the separation distance between the ball part (110a) and the heel part (110b) according to the rotation.

And the slide bar 114a and the slide groove 114b are components provided to guide the accurate and stable expansion and contraction operation of the ball part 110a with respect to the heel part 110b, and the ball part 110a and the heel part ( 110b) is formed in the shape of projections and grooves respectively corresponding to the sliding coupling structure.

The pressing protrusion 118 is a component provided to accurately and effectively press the pressure sensor 20 of the smart shoe 10 together with the above-described lower compression unit 120 formed at the opposite position, and the above-mentioned foot ball part ( 110a) and the heel portion 110b are formed to protrude downward corresponding to the arrangement of the pressure sensor 20, respectively.

Due to the modified example of the present invention as described above, the operator can universally utilize the performance test apparatus 100 according to the present invention without restrictions on the size of the smart shoe 10 , and the size of the smart shoe 10 . Accurate performance test corresponding to the arrangement of the pressure sensor 20 that is changed according to the present invention can be made.

In the foregoing, specific embodiments of the present invention have been described and shown, but it is common knowledge in the art that the present invention is not limited to the described embodiments, and that various modifications and variations can be made without departing from the spirit and scope of the present invention. It is self-evident to those who have Accordingly, such modifications or variations should not be individually understood from the technical spirit or point of view of the present invention, and modified embodiments should be said to belong to the claims of the present invention.

10: smart shoes 12: bottom
20: pressure sensor 30: communication module
100: performance test device for pressure sensor of smart shoes
110: upper compression part 110a: foot ball part
110b: heel 112: first frame
114a: sliding bar 114b: sliding groove
116: stretchable portion 118: pressing protrusion
120: lower compression unit 122: second frame
130: operation unit 132: guide bar
133: rotating unit 134: driving means
M: Power unit S: Screw shaft
N: Nut part HC: Hydraulic cylinder
140: control unit

Claims (7)

As a device for testing the performance of a pressure sensor mounted on the bottom of a smart shoe,
A foot-shaped upper compression unit fixed to the lower portion of the first frame and inserted into the shoe; a lower pressure part fixed to the upper part of the second frame spaced apart from the lower part of the first frame and disposed at least one or more at a position corresponding to the pressure sensor; and an operation unit for varying the separation distance between the first frame and the second frame so that a pressing force controlled through the lower surface of the upper pressing unit and the lower pressing unit is applied to the pressure sensor,
The operation unit,
at least one guide bar installed between the first frame and the second frame to guide the relative movement of any one of the first frame and the second frame; and
a driving means provided in the first frame to force the first frame to move linearly toward the second frame according to the guidance of the guide bar;
The first frame and the second frame,
It is made to be separated from the maximum separation distance by the driving means,
On one side of the guide bar,
Smart characterized in that it further comprises a rotating part for guiding one of the first frame and the second frame to rotate relative to the other in the vertical direction so that the insertion of the shoe into the upper compression part is made smoothly. Performance test device for pressure sensor of shoes. delete According to claim 1,
The driving means is
A ball including a power unit coupled to the first frame, a screw shaft elongated toward the second frame in a state of being connected to the power unit, and a nut portion provided in the second frame and screwed with the screw shaft screw, or
Performance testing device for pressure sensors of smart shoes, characterized in that it is a hydraulic cylinder that linearly reciprocates a piston with the pressure of the fluid provided from the pump. delete According to claim 1,
The performance test device,
Performance for the pressure sensor of smart shoes, characterized in that it further comprises a control unit that is wirelessly connected to the communication module mounted on the shoe and receives and processes the pressure information measured from the pressure sensor pressurized according to the variable operation of the operation unit. test device. According to claim 1,
The upper pressure part,
It is divided back and forth based on the central part corresponding to the arch of the foot and consists of a ball part at the front end and a heel part at the rear end,
The ball-of-foot part is a performance test device for a pressure sensor of a smart shoe, characterized in that it is slidably coupled so as to be stretched and contracted back and forth with respect to the heel part in response to the size of the shoe, which is the test object. 7. The method of claim 6,
In the ball part and the heel part,
A performance testing apparatus for a pressure sensor of a smart shoe, characterized in that each of the pressing protrusions protruding downward corresponding to the arrangement of the pressure sensor is provided.

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