TWI412733B - Apparatus and method for measuring foot pressure - Google Patents

Abstract

This invention provides an apparatus and a method for measuring foot pressure. The apparatus cooperates with a processing unit to obtain distribution information of the foot pressure. The apparatus includes a filling element, a characterized plate, and an image capturing unit. The filling element has a first surface and a second surface opposite to each other. The first surface is used for receiving the foot pressure. The characterized plate has a third surface coupled to the second surface of the filling element. The third surface has a plurality of wave crests and troughs disposed alternatively. The image capturing unit is disposed at one side of the characterized plate and is used for capturing images of the characterized plate and transmitting the images of the characterized plate to the processing unit.

Description

Foot pressure measuring device and measuring method thereof

The invention relates to a measuring device and a method, and in particular to a foot pressure measuring device and a measuring method thereof.

With the gradual improvement of living standards, consumers are paying more and more attention to the comfort of wearing shoes when purchasing shoes. However, because each person's sole shape is not the same, the standing posture is different from the habit, and the pressure distribution of the sole must be different. Therefore, in order for everyone to wear an insole suitable for their feet, the insole must be customized to meet the different needs of each individual. Thus, measuring the distribution of the foot pressure of each person becomes quite important.

At present, there are usually three types of conventional foot pressure measurement equipment, including transfer type foot pressure measurement equipment, direct imprint type foot pressure measurement equipment, and electronic foot pressure measurement equipment.

The basic operation mode of the transfer type foot pressure measuring device is to display some small features of the sole directly in the form of rubbing, but relatively speaking, the foot pressure data size cannot be directly output.

The basic operation mode of the direct imprinted foot pressure measuring device adopts a commercially available metal diamond mesh structure, and its appearance can be matched with the plantar change. During the measurement, the metal diamond mesh is placed at the top, a layer of silicone rubber is added in the middle, and a sticker is added at the bottom to measure the foot pressure. Thereby, for the change behavior of the foot pressure, the arc length displayed by the pressed silicone rubber and the sticker can be used to judge the pressure difference. In the area where the pressure is higher, the longer the silicone rubber sticks to the sticker, the smaller the pressure is. With the aforementioned direct imprinting measuring device, although the size of the foot pressure and the characteristics of the sole of the foot can be simultaneously measured, the resolution is insufficient because it is subject to the metal diamond mesh.

When measuring with an electronic foot pressure measuring device, the stress perpendicular to the ground is usually measured by an electronic sensor. Usually the arrangement density of the inductor is about 2 to 4 sensors per square centimeter. Although the accuracy and reliability of the measurement can be improved, the relatively expensive equipment cost and the more complicated measurement procedure are paid. Especially for patients who are inconvenient to go and have difficulty walking, it is more difficult to carry out with them. In addition, the results of the measurement mainly focus on the display of the data, but for some tiny features, such as the corns of the soles of the feet, the features are not directly displayed.

Therefore, in order to produce a more efficient foot pressure measuring device, it is necessary to develop a new type of foot pressure measuring device technology, thereby improving measurement efficiency and reducing manufacturing time and manufacturing cost.

It is an object of the present invention to provide a foot pressure measuring device and a measuring method thereof, which have a better and more convenient foot pressure measuring technique.

The foot pressure measuring device proposed by the invention is used in combination with the processing unit to obtain distribution information of the foot pressure.

The foot pressure measuring device of the present invention comprises a foot plate pressure measuring component, an image capturing unit and a processing unit; wherein the foot plate pressure measuring component comprises a filling member and a feature plate, and the filling member has a first surface and a relative surface a second surface, the first surface is configured to receive a foot pressure; the feature plate has a third surface coupled to the second surface of the filler member, and the third surface has a plurality of peaks and troughs disposed between the phases; the image capturing unit is disposed on the feature One side of the board is used to capture the image of the feature board; the processing unit is coupled to the image capturing unit, wherein the processing unit receives the image of the feature board and performs arithmetic processing to obtain distribution information of the foot pressure.

The method for measuring the foot pressure according to the present invention comprises the steps of: first receiving a foot pressure; then capturing an image of the feature plate to obtain a distribution image of the foot pressure on the feature plate, the feature plate having a plurality of peaks and troughs disposed between the phases Finally, the image of the feature board is received and processed to obtain the distribution information of the foot pressure.

The invention has the beneficial effects of providing a low-cost foot pressure measuring device and a measuring method thereof, and the high-sensitivity characteristic plate can not only measure the fine characteristics of the sole and the foot pressure at the same time, but also can greatly improve The range of foot pressure measurements and a higher resolution.

The above and other objects, features, and advantages of the present invention will become more apparent and understood by the appended claims appended claims

Fig. 1 is a schematic view showing a foot pressure measuring device according to an embodiment of the present invention. The foot pressure measuring device 1 provided by the present invention includes the following components:

From the base 11, the foot plate pressure measuring elements (including the filling member 12 and the feature plate 13), the support member 14 and the image capturing unit 15. The foot pressure measuring elements (including the filling member 12 and the feature board 13), the support member 14 and the image capturing unit 15 are sequentially disposed on the base 11 from top to bottom.

In the embodiment, the base 11 includes a first body 111, a second body 112, and a plurality of adjustment pads 113. The first body 111 and the second body 112 may be metal strips, as in the present invention, an aluminum extruded strip is used as an application. During measurement, the first body 111 is available for stepping on the measuring foot, and has an accommodating area for accommodating the foot plate pressure measuring component (including the filling member 12 and the feature plate 13), the supporting member 14 and the image capturing unit. 15.

In this embodiment, the upper surface of the second body 112 can have a flat appearance for non-measurement. The second body 112 can be connected to the first body 111 or at a certain distance from the first body 111. When the second body 112 is spaced apart from the first body 111 by a certain distance, the distance should not be too large to maintain a natural posture when the human body stands on the base 11.

In addition, the second body 112 can be substantially at the same level as the first body 111, so that the two feet of the human body can be balanced while being measured.

In this embodiment, a plurality of adjustment pads 113 can be respectively disposed on the lower sides of the first body 111 and the second body 112, which can be used to adjust the support heights of the first body 111 and the second body 112, respectively, to facilitate A fine adjustment of the horizontality of the entire pedestal 11. The filler 12 has a first surface 121 and a second surface 122 that are disposed opposite each other. For example, the first surface 121 can be the upper surface of the filler 12, and correspondingly, the second surface 122 can be the lower surface of the filler 12.

In the present embodiment, the first surface 121 can be used to receive the foot pressure, that is, the measuring foot can be directly stepped on the first surface 121.

In the present embodiment, the material of the filling member 12 is an elastic sheet, which will help to enhance the appearance of the fine pressure of the characteristic sheet 13.

In addition, in the present embodiment, in order to make the foot pressure be clearly displayed, the filling member 12 of the foot plate pressure measuring component may be selected from a dark color material, such as black. The feature plate 13 of the foot plate pressure measuring component has a third surface 131 coupled to the second surface 122 of the filler member 12. The third surface 131 may be the upper surface of the feature plate 13, and the third surface 131 has a microstructure, and the other surface opposite to the third surface 131 may have a flat appearance. Details will be detailed later.

Referring to Figure 2, there is shown a detailed structural view of a feature board in accordance with an embodiment of the present invention. The microstructure on the third surface 131 of the feature plate 13 of the foot plate pressure measuring element may be a plurality of bidirectionally interleaved crests and troughs to present a plurality of corresponding pyramid-like pyramids. Reference is made to the structure of the feature board 13 in Fig. 1, that is, the structure.

In this embodiment, the equal distance between the top of the cone and the top of the cone ensures an indication of the magnitude of the foot pressure in the spacing. Thereby, such a structure is equivalent to arranging more than 25 inductors per square centimeter. Compared with the conventional electronic measuring device, the arrangement density of the inductor in the embodiment is improved by 6 to 12 times. Greatly improved the accuracy of the measurement. The spacing between the top of the cone and the top of the cone can be determined by the minimum measurement range. In this embodiment, the angle of the top of each pyramid-shaped tip cone, that is, the tip cone, may be 90 degrees. In other embodiments, the angle of the tip may also be other values depending on the value of the set maximum load.

Please refer to FIG. 3 for a detailed structural view of a feature board according to another embodiment of the present invention. The feature plate 23 provided in this embodiment is different from the feature plate 13 in FIG. 2 in that the microstructure on the third surface 131 of the feature plate 23 in the present embodiment is a plurality of crests and troughs which are alternately arranged in a single direction.

Please refer to FIG. 1 again. In this embodiment, the feature board 13 can be acrylic. Since the surface of the acrylic surface will show a matte surface after being cut, the surface will appear as a matte surface just like frosted glass. Usually one side of the ground glass has a smooth surface and the other side is a rough surface. When the light passes through the frosted glass, it will not advance in a straight line, so only the other side of the glass will have a bright light, but it cannot be seen clearly. If the rough surface of the ground glass is wetted, the water fills the recessed area of the glass, and the two sides of the glass become the same as the generally transparent glass. This way, the light passes through without a deflection, so that the object on the other side of the glass can be clearly seen.

This embodiment utilizes the principle of the frosted glass phenomenon described above, and cooperates with the filling member 12 disposed on the third surface 131. When the filling member 12 receives the foot pressure, an elastic phenomenon occurs, and the filling member 12 is filled into the trough. At the same time, since the pressure of the foot pressure at each point will be different, the area of the filling member 12 filled with the trough will also vary.

In the present embodiment, since the filler member 12 and the feature plate 13 of the foot plate pressure measuring member are the main force receiving members, a support member 14 can be disposed under the same. In this embodiment, the material of the support member 14 can be transparent acryl, so that the image of the foot pressure measured by the feature plate 13 can be captured by the image capturing unit 15 as an image. The thickness of the support 14 can be 20 mm.

In this embodiment, the image capturing unit 15 can be disposed under the support member 14 for capturing the image of the feature panel 13 to obtain an image of the measurement result of the foot pressure displayed by the feature panel 13.

In order to achieve high resolution and low cost at the same time, the image capturing unit 15 provided in this embodiment may be a scanner.

In addition, in this embodiment, the image capturing unit 15 can also have a transmission interface. In this embodiment, after the image capturing unit 15 captures the image of the feature board 13, it may perform preliminary processing. For example, it can be grayscaled and processed in a small range of screenshots.

Figure 4 is a schematic view of a foot pressure measuring device according to an embodiment of the present invention, and the same portions in the figure are given the same reference numerals, in addition to the processing unit 3. The processing unit 3 is coupled to the image capturing unit 15 of the foot pressure measuring device 1 , and the processing unit 3 is coupled to the image capturing unit 15 via a wireless or wired manner to receive the image file transmitted by the image capturing unit 15 . This wireless method includes the use of Bluetooth or infrared transmission. The wired method may include a method of transmitting using a USB interface. The processing unit 3 can be a computer device including a host 31 and a display 32 coupled to each other. The host 31 receives the image file and performs arithmetic processing on the image to obtain the distribution information of the foot pressure. Display 32 receives this distribution information and displays it.

Specifically, after receiving the image file transmitted by the image capturing unit 15, the host 31 of the processing unit 3 performs a binarization process on the image, and then calculates the pixel points of each interval to finally calculate the soles of the feet. The pressure value of the interval. The host 31 then transmits a signal containing the foot pressure distribution information to the display 32 for display.

FIG. 5A is a flow chart showing a method for measuring a foot pressure according to an embodiment of the present invention. First, in step S51, the foot pressure is received. As shown in FIG. 5B, the user steps the measuring foot on the first surface 121 of the filling member 12 of the foot plate pressure measuring element. Since the filling member 12 has elasticity, Therefore, when it receives the foot pressure, an elastic phenomenon occurs, and the filler 12 is filled into the trough of the third surface 131 of the characteristic plate 13. Moreover, the size of the troughs filled in the filling member 12 is also different due to the difference in the foot pressure at each point.

In the step S52, the image of the feature board 13 is captured, and the foot pressure is transmitted to the feature board 13 by the filler member 12. The feature board 13 has an indentation pattern, and the image capturing unit 15 captures the image. This image of the feature plate 13 with an indentation pattern.

In step S53, grayscale processing is performed on the image of the feature board 13. After capturing the image of the feature board 13 , the image capturing unit 15 may perform preliminary processing on the image board 13 . In this embodiment, the gray scale processing can be performed first.

In step S54, the image of the feature board 13 is subjected to a screenshot processing, that is, grayscale processing is performed on the image of the feature board 13, and a small-range screenshot processing can be further performed. However, the present invention does not limit the order of steps S53 and S54.

In this embodiment, in step S55, the image of the feature board 13 is received and the arithmetic processing is performed, and the processing unit 3 can receive the image file transmitted by the image capturing unit 15 by wireless or wired. Subsequently, after performing a binarization process, a pressure map of the foot pressure measurement method as shown in Fig. 5B can be obtained.

FIG. 5C is a graph showing the relationship between the foot pressure and the number of pixels (Pixel) according to an embodiment of the present invention. Please refer to FIG. 4, FIG. 5A, FIG. 5B, and FIG. 5C together.

In this embodiment, the processing unit 3 calculates the number of pixels included in each section of the image of the feature board 13. After the processing unit 3 completes the calculation, it compares the number of pixel points included in each interval with the relationship between the foot pressure and the number of pixel points shown in FIG. 5C to obtain the foot pressure distribution information of each interval.

In the present embodiment, the relationship between the foot pressure and the number of pixel points shown in FIG. 5C can be obtained by the experiment and stored in the processing unit 3 in advance. For a feature board having angles of different tapers, the relationship between the corresponding foot pressure and the number of pixel points is also different. In this embodiment, only a feature plate having a taper angle of 90 degrees is taken as an example for description.

As can be seen from the 5Cth, when the applied pressure is slowly increased to 2800 gf, the relationship between the force and the number of pixel points is a stable and slowly climbing condition. Thus, the angle of the sharp cone in the characteristic plate 13 provided in Fig. 4 is 90 degrees.

In summary, the foot pressure measuring device, the measuring system and the measuring method thereof provided by the embodiment use the matching of the self-designed feature plate and the filling member to generate different degrees when subjected to different pressures. Dark and shallow image for discriminating different weight sources.

In addition, the measured feature board 13 and the filler member 12 can be a two-way matching manner, including the following:

The filler member 12 as shown in Fig. 5D is a planar structure, and the feature panel 13 is a plate having a microstructure and a surface blasting.

For example, the filling member 12 of FIG. 5E is a material having a microstructure, and the characteristic plate 13 is a flat plate structure, which is treated by surface blasting (glazed glass), and the combination of the two groups can be equally applied to the measuring platform. In the middle, and also in the same way, the image capturing unit that can be obtained on the market is used, and the image is transferred into a picture for subsequent analysis processing. Finally, after the image image is obtained, the processing unit is used to process and analyze the image, so that the measurement analysis can be completed.

Compared with the conventional foot pressure measuring device, the foot pressure measuring system provided by the embodiment can not only accurately predict the distribution of the foot pressure, but also display the fine features of the sole. It can meet both high resolution and low cost requirements.

The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention; all other equivalent changes or modifications which are not departing from the spirit of the present invention should be included in the following. Within the scope of the patent application.

1. . . Foot pressure measuring device

11. . . Pedestal

3. . . Processing unit

13,23. . . Feature board

12. . . Filler

15. . . Image capture unit

14. . . supporting item

32. . . monitor

31. . . Host

112. . . Second ontology

111. . . First ontology

121. . . First surface

113. . . Adjustment foot pad

131, 231. . . Third surface

122. . . Second surface

S51~S55. . . step

Fig. 1 is a schematic view showing a foot pressure measuring device according to an embodiment of the present invention.

Fig. 2 is a view showing a detailed structure of a characteristic plate according to an embodiment of the present invention.

Fig. 3 is a view showing the detailed structure of a characteristic plate according to another embodiment of the present invention.

Fig. 4 is a schematic view showing a foot pressure measuring system according to an embodiment of the present invention.

FIG. 5A is a flow chart showing a method for measuring a foot pressure according to an embodiment of the present invention.

FIG. 5B is a schematic view showing the implementation of the method for measuring the foot pressure according to the embodiment of the present invention.

Fig. 5C is a graph showing the relationship between the foot pressure and the number of pixels in the embodiment of the present invention.

FIG. 5D is a schematic view showing the implementation of the foot pressure measurement feature plate and the filler member according to the embodiment of the present invention.

FIG. 5E is a schematic view showing the implementation of the foot pressure measuring feature plate and the filling member according to the embodiment of the present invention.

12. . . Filler

121. . . First surface

122. . . Second surface

13. . . Feature board

131. . . Third surface

Claims (8)

A foot pressure measuring device having a dark filling member and a characteristic plate, comprising: a dark filling member having a first surface and a second surface disposed opposite to each other, the first surface for receiving the foot pressure, The material of the dark filler is a thermoplastic elastomer (TPE); a feature plate which is treated by sandblasting with a surface to have a frosted glass phenomenon, the feature plate having a third surface coupled to a second surface of the dark filler member, the third surface having a plurality of bidirectionally staggered peaks and troughs to present a plurality of corresponding pyramid-like pyramids, one cone top and the other cone top An image capture unit is disposed on one side of the feature board for capturing and transmitting an image of the feature board; a computer device, the computer device Receiving an image transmitted by the image capturing unit, calculating the image to obtain a pressure value received by each section of the sole; a base, the base comprising an adjusting foot pad to adjust the A height of the seat; and a transparent support member disposed between the plate and wherein a scanner. The device of claim 1, wherein the material of the feature plate comprises acrylic. The device of claim 1, wherein the image capturing unit performs a grayscale processing and a screenshot processing on the image of the feature panel. A method for measuring a foot pressure using the device of claim 1 includes at least: receiving a foot pressure; capturing an image of the feature plate to obtain a distribution image of the foot pressure on the feature plate, the feature plate having a plurality of phase-set peaks and troughs; performing a grayscale processing on the image of the feature panel; performing a screenshot processing on the image of the feature panel; and receiving an image of the feature panel and performing an arithmetic processing to obtain the foot pressure Distribution information. A foot pressure measuring device having a dark filling member and a characteristic plate, comprising: a dark filling member having a first surface and a second surface disposed opposite to each other, the first surface for receiving the foot pressure, The material of the dark filler is a thermoplastic elastomer (TPE), and the dark filler has a plurality of corresponding pyramid-like pyramids, and an equal spacing between one cone top and the other cone top is equal. In order to display a foot pressure in the equal spacing; a feature plate, the feature plate is treated by a surface blasting to have a frosted glass phenomenon; an image capturing unit is disposed on one side of the feature plate for Extracting and transmitting an image of the feature board; the computer device processes the image received by the image capturing unit, and calculates the image to obtain a pressure value of each section of the foot; a base, the base includes an adjustment foot pad to adjust a height of the base; and a transparent support member disposed between the feature plate and a scanner. The device of claim 5, wherein the material of the feature plate comprises acrylic. The device of claim 5, wherein the image capturing unit performs a grayscale processing and a screenshot processing on the image of the feature panel. A method for measuring a foot pressure using the device of claim 5, comprising: receiving a foot pressure; capturing an image of the feature plate to obtain a distribution image of the foot pressure on the feature plate, the feature plate having a plurality of phase-set peaks and troughs; performing a grayscale processing on the image of the feature panel; performing a screenshot processing on the image of the feature panel; and receiving an image of the feature panel and performing an arithmetic processing to obtain the foot pressure Distribution information.