KR101554505B1 - Foot pressure measurement system and method - Google Patents

Abstract

More particularly, the present invention relates to a system and method for measuring a foot pressure of a foot, which is divided into a left foot and a right foot by a sole foot, and a heel, a transverse foot, And foot-section-by-section.
In order to achieve the above object, the foot pressure measuring system of the present invention includes a sensor unit including a sensor array of a plurality of rows and a plurality of rows of sensors for detecting a signal at a foot pressure, and a mat- Foot low pressure meter; And an analyzer for dividing the foot pressure signal received from the foot pressure measuring device into two sections separated from each other by the center line of the sole and divided by the heel portion, the transverse cusp portion and the longitudinal arch portion, .
The analyzing unit may include a display unit for displaying the pedestrian-low-pressure signal received from the pedestrian-low-pressure measuring unit in a different color depending on the pressure, the pedestal-low-pressure measuring unit being configured to detect a pedestrian- do.

Description

Technical Field [0001] The present invention relates to a foot pressure measurement system and method,

More particularly, the present invention relates to a system and method for measuring a foot pressure of a foot, which is divided into a left foot and a right foot by a sole foot, and a heel, a transverse foot, And foot-section-by-section.

Generally, in the human body, the foot plays a very important role in maintaining balance and performing various actions, such as supporting the body load and absorbing the impact.

A step is a movement from the contact of one heel to the contact of the other foot. The step width is the distance between the centers of the heels during two consecutive soles of the foot, ie, the distance between the centers of the heels at the time of walking.

Foot angle refers to the angle between the direction of the body's forward direction and the axis of the foot, with the toes pointing outward and assumes a normal range of about 7 degrees.

Shoe worn on the foot should be able to protect the foot by ensuring that the foot pressure due to the load is uniformly distributed throughout the soles of the foot. Since the walking habit, the walking posture, and the shape of the sole are different for each pedestrian, the distribution of the foot pressure is also different from each other.

Therefore, in order to manufacture shoes suitable for each pedestrian, it is necessary to measure the pedestrian's low pressure at the time of walking or the pedestal pressure at the time of stopping, and then the shoes or the insole should be manufactured accordingly.

On the other hand, a foot diagnostic device has been proposed to measure the foot pressure. The foot diagnosis device is disclosed in Korean Utility Model Registration No. 20-395775.

The foot diagnostic system is very simple and convenient to check the overall health of the foot as the subject can see the condition of the footprints on the mirror when the patient is barefooted on the scaffold.

However, there is a problem that the foot diagnosis apparatus can see only the 'appearance' of the foot under load and can not know the specific distribution of the foot pressure or the foot pressure of the 'moving' pedestrian.

In addition, since the thickness is thick, it is not possible to measure the natural low pressure at the time of natural walking and the transportation is not easy.

That is, in order to produce a more comfortable shoe or insole, it is desirable to measure the foot pressure at rest and during walking.

It is also desired to be able to mount the pad on a portion where the pressure is biased by quantitatively detecting the pressure of each section of the sole such as the heel portion, the transverse cusp portion, the cuspid portion, and the like from the sole to the center line.
In general, the sole is divided into left and right parts centering on the center line, or divided into an anterior part and a hind part. The recessed part of the sole is called an arch, and the arch has a longitudinal arch and a lateral arch, The foot arch is located on the left and right sides, and the lateral arch is the arch located on the forefoot, and the heel is located on the hind leg.

SUMMARY OF THE INVENTION The object of the present invention is to provide a method and apparatus for detecting the foot pressure at the time of stopping and walking and detecting the foot pressure by the foot of the foot divided into left and right sides by the center line of the sole but divided into heel, Foot low pressure measurement system and method.

Another object of the present invention is to provide a sensor unit including a sensor array including a plurality of rows and a plurality of rows of sensor arrays, wherein a mat type measuring plate is mounted on the sensor unit, and a line decoder and a multiplexer, And to provide a pedestrian-low pressure measurement system and method for sequentially detecting pressure of each sensor.

Another problem to be solved by the present invention is to provide a pedestrian-low-pressure measuring system and method which are capable of detecting pedestrian-low pressures during stopping and walking, but displaying different colors according to the degree of pressure.

In order to achieve the above object, the foot pressure measuring system of the present invention includes a sensor unit including a sensor array of a plurality of rows and a plurality of rows of sensors for detecting a signal at a foot pressure, and a mat- Foot low pressure meter; And an analyzer for dividing the foot pressure signal received from the foot pressure measuring device into two sections separated from each other by the center line of the sole and divided by the heel portion, the transverse cusp portion and the longitudinal arch portion, .

The foot low pressure measuring device is configured to detect a pedestrian's low pressure at the time of stopping or a pedestrian's low pressure when walking.

The analyzing unit includes a display unit for displaying the group low pressure signal received from the foot low pressure measuring unit with different colors according to the pressure.

The present invention relates to a sensing device, comprising: a sensing control unit for reading a low voltage signal from a sensor unit in order and amplifying a read signal; And a data acquisition unit for converting a signal received from the sensing control unit into a digital signal and transmitting the digital signal to the analysis unit.

The sensing control unit includes: a line decoder for selecting a column to be detected from the sensor unit according to the column designation control signal received from the data acquisition unit; A first signal amplification unit for receiving the line-low pressure signals of the column (line) designated by the line decoder in the sensor unit and amplifying the line-low pressure signals; and a controller for selecting one of the group low- A multiplexer for outputting; And a second signal amplifier for amplifying the footprint signal output from the multiplexer.

The first signal amplifying unit has the same number of amplifying units as the number of sensors in one row of the sensor unit.

The sensor of the sensor unit may be any one of a piezoelectric sensor, a load cell, and a FSR (Force Sensing Resistor) sensor.

The data acquisition unit of the present invention includes an A / D conversion unit for converting the footprint signal output from the sensing control unit into a decoded signal; An arithmetic processing unit for converting the received foot pressure signal from the A / D conversion unit into a signal for transmission to the analysis unit; An output port section for transmitting a column designation control signal from the operation processing section to the line decoder of the sensing control section; And a transmission / reception unit for transmitting the pedestrian-low-pressure signal output from the operation processing unit to the analysis unit by wire or wirelessly.

The transmitter and receiver can use RS232C.

The analysis unit may include: a transmission / reception unit that receives the pedestrian-low pressure signal from the transmission / reception unit of the data acquisition unit; An arithmetic processing unit for storing the pedestrian-low-pressure signal received from the data acquisition unit through the transceiver unit in a memory, outputting the pedestrian signal to the display unit, and analyzing the pressure distribution of the sole; A key input unit for setting a stop-by-pedestrian-low-pressure detection mode or a pedestrian-pedestrian-low-pressure detection mode and inputting an identification number or name of the subject; A memory for storing an output of the operation processing unit; And a display unit for displaying an output of the operation processing unit.

In the step low pressure measurement method of the present invention, it is determined whether or not a stop low pressure mode is set. If the stop low pressure mode is set, the step counter is set to 1. If the stop low pressure mode is selected, A mode setting step; A step of decreasing a counter by one, and detecting a foot-low pressure; A low-voltage output step of storing the received low-voltage in the memory in a memory, displaying the color in accordance with the pressure, and outputting the color to the display unit; A pressure detecting step for detecting the plant pressure data per plant section, storing the pressure data in the memory, and outputting the detected pressure data to the display unit; Determining whether or not the counter is 0, ending if the counter is 0, and returning to the foot-low pressure detecting step if the counter is not 0.

According to the system and method for measuring foot pressure in the foot of the present invention, foot pressure at the time of stopping and walking is detected, and the foot pressure is divided into left and right portions by the center line of the sole, and divided into heel portions, So that it is possible to produce a footwear and a custom insole by detecting a foot pressure at a higher accuracy.

According to another aspect of the present invention, there is provided a sensor unit including a sensor array including a plurality of rows and a plurality of sensor arrays, wherein a mat type measuring plate is mounted on the sensor unit, So as to improve the precision and accuracy of the detected foot pressure.

In addition, the system and method for measuring foot pressure of the present invention are configured to display a low-pressure low pressure during stopping and walking according to the degree of pressure, so that a novice or a customer can see the display unit easily, And the like.

1 is a conceptual diagram for explaining a foot pressure measurement system according to an embodiment of the present invention.
FIG. 2 is a block diagram for explaining a configuration for measuring pressure in the foot-low pressure measuring system of FIG. 1; FIG.
FIG. 3 is a conceptual diagram showing the configuration of a foot low pressure measuring apparatus according to an embodiment of the present invention.
4 is a flowchart illustrating a method of driving a pedestrian's foot pressure measurement system according to an embodiment of the present invention.
5 and 6 are examples of an initial inspection screen displayed on the display unit according to the embodiment of the present invention.
FIG. 7 is a measurement result screen displayed on the display unit according to the embodiment of the present invention.
8 is a comparative analysis screen displayed on the display unit according to the embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a conceptual diagram for explaining a foot pressure measurement system according to an embodiment of the present invention.

The foot low pressure measuring instrument 100 includes a sensor unit 110 and transmits the pressure of the foot sole detected by the sensor unit 110 to the analysis unit 300. The foot low pressure measuring device 100 can detect the pressure value of the stopped footstep and also can detect the foot pressure value of the foot during walking (one step).

The analysis unit 300 stores the pressure values of the received plantar feet in the memory 350 for each section of the plantar foot and stores the pressure values of the footprints as images, So that it can be displayed on the display unit 340 so as to be represented by pixels having different colors. The analysis unit 300 may use a personal terminal used for a general household or an office and the analyzing unit 300 may be installed with the analysis software of the present invention so that the pressure value of the foot low pressure measuring instrument 100 is stored or displayed in real time .

FIG. 2 is a block diagram for explaining a configuration for measuring pressure in the foot-low pressure measuring system of FIG. 1; FIG.

The low pressure measurement device 100 includes a sensor unit 100, a sensing control unit 150, and a data acquisition unit 200.

The sensor unit 100 includes a sensor array having sensors arranged in a plurality of rows and a plurality of rows. The sensor unit 100 can output a signal along a column by row as the scanner scans from the above row to the next row. The sensor unit 100 may have a size of 48 x 48. The sensor unit 100 may be a pressure sensor, such as a piezoelectric sensor, a load cell, or a force sensitive sensor (FSR) sensor.

The sensing control unit 150 reads the pressure signals in order from the sensor unit 100 and amplifies the read signals. That is, the pressure signal of the column (line) designated by the line decoder 190 among the sensor arrays of the sensing control unit 150 is detected, and the pressure signals of the detected columns are sequentially output to the data acquisition unit (200). The sensing control unit 150 includes a first signal amplification unit 160, a multiplexer 170, a second signal amplification unit 180, and a line decoder 190.

The first signal amplifying unit 160 is means for receiving the pressure signals of the column (line) designated by the line decoder 190 in the sensor unit 100 and amplifying the signals. The first signal amplification unit 160 includes amplification means such as the number of sensors in one row of the sensor unit 100.

The multiplexer 170 selects one of the pressure signals output from the first signal amplification unit 160, that is, the pressure signals of the column (line) designated by the line decoder 190, It is means.

The second signal amplifying unit 180 amplifies the pressure signal output from the multiplexer 170. The second signal amplifying unit 180 may further include a noise removing filter.

The line decoder 190 selects a column from which the pressure signal is to be detected from the sensor unit 100 according to the column designation control signal received from the operation processing unit 220 of the data acquisition unit 200.

The data acquisition unit 200 converts the signal received from the sensing control unit 150 into a digital signal and transmits the digital signal to the analysis unit 300. The data acquisition unit 200 generates a digital signal, And transmits the generated control signal to the line decoder 190. The data acquisition unit 200 includes an A / D conversion unit 210, an operation processing unit 220, an output port unit 230, and a transceiver unit 240.

The data acquisition unit 200 may be a data acquisition board including an A / D conversion unit 210, an operation processing unit 220, an output port unit 230, and a transmission / reception unit 240 .

The A / D converter 210 converts the pressure signal output from the second signal amplifier 180 into a decimation signal.

The operation processing unit 220 converts the pressure signal received from the A / D conversion unit 210 into a signal to be transmitted to the analysis unit 300.

The output port unit 230 is a port for transmitting a column designation control signal from the operation processing unit 220 to the line decoder 190 of the sensing control unit 150.

The transmission / reception unit 240 is a port for transmitting the pressure signal output from the operation processing unit 220 to the analysis unit 300. Here, serial communication using RS232C can be used for sending and receiving. Signal transmission between the data acquisition unit 200 and the analysis unit 300 may be performed by wire or wireless.

The analysis unit 300 stores the pressure signal received from the data acquisition unit 200 in the memory 350 and displays the image in the form of an image and outputs it to the display unit 340 to analyze the pressure distribution of the sole. The analysis unit 300 includes a transmission / reception unit 310, an operation processing unit 320, a key input unit 330, a memory 350, and a display unit 340.

The transmission / reception unit 310 receives the pressure signal received from the transmission / reception unit 240 of the data acquisition unit 200, and transmits the received pressure signal to the calculation processing unit 320.

The arithmetic processing unit 320 stores the pressure signal received from the data acquisition unit 200 through the transmission / reception unit 310 in the memory 350 and outputs it to the display unit 340 as an image and outputs the pressure distribution of the sole .

The key input unit 330 sets a stop-by-low-pressure detection mode or a walk-behind low-pressure detection mode, and inputs an identification number or name of the subject.

The memory 350 stores the output of the arithmetic processing unit 320.

The display unit 340 displays the output of the arithmetic processing unit 320.

FIG. 3 is a conceptual diagram showing the configuration of a foot low pressure measuring apparatus according to an embodiment of the present invention.

The foot low pressure gauge 100 allows the static and dynamic distribution of the sole, which is generated during a walk, to be measured through the foot low pressure gauge 100. The foot pressure monitor 100 includes a sensor unit 110 for sensing the foot pressure of the subject, a measurement plate 120 for being installed on the upper surface of the sensor unit 110, A power supply section 140 for supplying power to the family low voltage measuring apparatus and a transmission and reception section 240 for transmitting the signals of the data acquisition section 200 to the analysis section 300, ).

Since the sensor unit 110 and the measurement plate 120 are manufactured in a thin mat type, the weight is low and the floor height is low, so that the subject can easily feel the same It is possible to perform the inspection with a feeling.

The sensor unit 110 has a plurality of pressure sensors distributed therein, and each pressure sensor is individually measured.

The measurement plate 120 may be formed of a replaceable film that can be detachably attached to the body of the foot low pressure measuring instrument 100. The foot plate 120 may be provided on the upper surface of the measurement plate 120 with a foot position or a walking pattern. Such a picture pattern can be changed according to the age and condition of the subject and can be selected according to the type of examination.

The transmitting / receiving unit 240 may be used in both wired and wireless modes. The pressure value generated by the foot pressure of the foot low pressure measuring instrument 100 is transmitted to the analysis unit 300 through the transmission /

The analysis unit 300 can use a PC used for a general household or an office, and an analysis software module is installed in the analysis unit 300 so that the pressure value of the foot pressure measurement unit 100 can be measured in real time. At this time, the measured pressure level is displayed in a color and a graph through the display unit 340, and the display unit 340 may be a monitor generally used.

The analysis software module analyzes the pressure value measured by the foot pressure measuring device 100 through a graph and is programmed to determine whether the pressure is biased and to perform an automatic prescription according to the result. ), It is possible to monitor the inspection process, to store measurement and measurement results, and to perform comparison analysis.

Since the foot low pressure measuring instrument 100 of the present invention is very low in height, it can measure a foot pressure at a natural walking, is light in weight, thin in thickness, and is provided with a moving handle, The meter can be installed to measure the foot pressure.

4 is a flowchart illustrating a method of driving a pedestrian's foot pressure measurement system according to an embodiment of the present invention.

In the initialization step, the counter, the register, and the like are cleared (S110)

In the subject identification information input step, the subject identification information is input (S120)

In the pressure sensor activating step, a start switch (not shown) of the pressure sensor is pressed to wait until the pressure sensor is activated (S130)

In the normal operation check step, it is checked whether or not the normal operation of the subject is performed (S140), and the process waits until the normal operation is performed.

It is judged whether or not the stopping pedal low pressure mode is set (S143). If the pedal pedal is in the low pedal depression mode, the step counter is set to 1 (S145).

The counter is countered (counter = counter-1) (S150), and the plantar pressure is detected (S160)

The plantar pressure is stored and the plantar pressure is displayed in color (S170).

Pressure data per plant section is detected, stored and output (S180).

The plantar section is divided into left and right sides from the sole to the center line, but the section can be defined by the heel (rear foot), transverse teeth (forefoot), and chin.

Whether or not the step to be detected is completed, that is, counter = 0, is compared (S190).

The foot pressure change graph corresponding to the walking is output (S200).

5 and 6 illustrate an initial inspection screen displayed on a display unit according to an embodiment of the present invention. FIG. 7 shows a measurement result screen displayed on a display unit according to an embodiment of the present invention. Is a comparative analysis screen displayed on the display unit according to FIG.

When the subject is placed on the measurement plate of the foot low pressure measuring instrument, the analytical software module of the analysis unit 300 is operated. Then, as shown in FIGS. 5 and 6, Is displayed.

At this time, the inspection window of the main screen is activated by one or two windows so that it can be selectively used.

Thereafter, the examinee or the examiner selects the measurement button on the main screen to allow the measurement to proceed. At this time, the subject gauge of the main screen moves from 0 to 100%, and the subject or the examiner who is performing the measurement can check.

After the measurement is completed, the measurement result is stored by pressing the save button of the main screen. Then, the measurement result can be confirmed through the main screen.

At this time, in the main screen, the low pressure area is displayed in blue, the high pressure area is displayed in red, and the pressure bias of the left and right feet of the subject and the front / (I.e., front and rear legs) are displayed on the main screen as a percentage, so that the user and the user can easily confirm the pressure bias by viewing the percentage.

Thereafter, by analyzing the measurement result, it is possible to judge whether or not there is a foot disease according to the biased pressure, and prescribe according to the judgment result.

For example, it is possible to determine whether or not the degree of foot disease improves or deteriorates by comparing and analyzing the past low pressure data of the subject to be prescribed, and to take countermeasures against it, or to compare the result of foot low pressure measurement of the subject with the footwear information May be analyzed to prescribe shoe care guidelines.

In addition, the measurement result of the subject can be compared with the similar foot disease data and a countermeasure for the same can be prescribed.

The present invention according to the above-described configuration realizes measurement and analysis of the pressure value of the foot low pressure measuring instrument through the analysis software module installed in the individual terminal, so that it is easy to use because there is no restriction on the inspection site, It is possible to judge whether or not there is a foot disease according to biases, and the automatic prescription according to the result can be made. According to the prescription result, information on the rehabilitation training, the correction device and the shoe suitable for the subject is provided, so that the patient's foot disease can be improved.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Modification is possible. Accordingly, it is intended that the scope of the invention be defined by the claims appended hereto, and that all equivalent or equivalent variations thereof fall within the scope of the present invention.

100: Pedestal low pressure measuring instrument 110:
120: Measurement plate 140: Power supply unit
150: sensing control unit 160: first signal amplification unit
170: multiplexer 180: second signal amplifying unit
190: Line decoder 200: Data acquisition unit
210: A / D conversion section 220:
230: output port unit 240: transmission / reception unit
300: Analyzer 310: Transceiver
320: operation processing unit 330: key input unit
340: display unit 350: memory

Claims (12)

A foot low pressure gauge having a sensor part formed of a plurality of rows and a plurality of rows of sensor arrays for detecting a signal of a pedestal pressure;
An analytical unit for detecting a foot pressure signal received from the foot pressure measuring unit on the basis of a section of the sole divided into left and right sides of the center line of the sole and divided into a heel portion, a transverse crest portion and a longitudinal arch portion;
A sensing control unit for sequentially reading the group low voltage signal from the sensor unit and amplifying the read signal;
A data acquisition unit for converting a signal received from the sensing control unit into a digital signal and transmitting the digital signal to the analysis unit;
And,
The analysis unit may include a display unit for displaying the group low pressure signal received from the foot low pressure measuring unit with different colors according to the pressure,
The sensing control unit,
A line decoder for selecting a column to be detected from the sensor unit according to the column designation control signal received from the data acquisition unit;
A first signal amplification unit in which sensor-low pressure signals of columns (lines) designated by the line decoder are received and amplified in the sensor unit;
A multiplexer for selecting and outputting a group low voltage signal of one of the group low voltage signals output from the first signal amplifying unit;
A second signal amplifying unit amplifying a low voltage signal output from the multiplexer;
Wherein the low-pressure measurement system comprises: The method according to claim 1,
Wherein the foot low pressure measuring device is configured to detect a pedestrian's low pressure at the time of stopping or a pedestrian's low pressure when walking. delete delete delete 3. The method of claim 2,
Wherein the first signal amplifying unit comprises the same number of amplifying units as the number of the sensors in the first row of the sensor unit. The method of claim 1, wherein
Wherein the sensor of the sensor unit comprises any one of a piezoelectric sensor, a load cell, and a FSR (Force Sensing Resistor) sensor. The method according to claim 1,
An A / D conversion unit for converting the footprint signal output from the sensing control unit into a decoded signal;
An arithmetic processing unit for converting the received foot pressure signal from the A / D conversion unit into a signal for transmission to the analysis unit;
An output port section for transmitting a column designation control signal from the operation processing section to the line decoder of the sensing control section;
A transmission / reception unit for transmitting the footprint signal output from the operation processing unit to the analysis unit by wire or wirelessly;
Wherein the low-pressure measurement system comprises: 9. The method of claim 8,
Wherein the transmission / reception unit uses RS232C. The method according to claim 1,
A transmission / reception unit for receiving a pedestrian-low pressure signal from a transmission / reception unit of the data acquisition unit;
An arithmetic processing unit for storing the pedestrian-low-pressure signal received from the data acquisition unit through the transceiver unit in a memory, outputting the pedestrian signal to the display unit, and analyzing the pressure distribution of the sole;
A key input unit for setting a stop-by-pedestrian-low-pressure detection mode or a pedestrian-pedestrian-low-pressure detection mode and inputting an identification number or name of the subject;
A memory for storing an output of the operation processing unit;
A display unit for displaying an output of the operation processing unit;
Pressure measurement system. A step counter is set to 1 if the stop low pressure mode is set, and a step counter is set to 2 if the stop low pressure mode is set.
A step of decreasing a counter by one, and detecting a foot-low pressure;
A low-voltage output step of storing the received low-voltage in the memory in a memory, displaying the color in accordance with the pressure, and outputting the color to the display unit;
A pressure detecting step for detecting the plant pressure data per plant section, storing the pressure data in the memory, and outputting the detected pressure data to the display unit;
Determining whether the counter is 0, ending if it is 0, and returning to a foot-low pressure detection step if it is not 0;
And measuring the pressure of the foot. 12. The method of claim 11,
Wherein the plantar section is divided into left and right portions from the sole to the center line, and the sections are determined by the heel portion, the transverse arch portion, and the longitudinal arch portion.

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