JP6026436B2 - Foot pressure distribution measurement system and information processing apparatus - Google Patents

Description

  The present invention relates to a foot pressure distribution measuring system for measuring a foot pressure distribution of a subject and an information processing apparatus constituting the system.

  Conventionally, exercise function recovery training has been performed under the guidance / monitoring of a physical therapist or the like for a patient who has developed a cranial nervous system disease such as stroke and whose right or left piece is paralyzed. In general, recovery of lower limb function is indispensable for living independently, especially in patients with cranial nervous system disease, exercise function recovery training can smoothly move the center of gravity of the left and right legs. It is important to do so.

  For this reason, there is a need for a device that visualizes the position of the center of gravity of the left and right feet and the trajectory thereof during the training, and displays them clearly to the patient.

  On the other hand, foot pressure distribution devices, center-of-gravity sway meters, and the like have been known as devices for visualizing the position and locus of the center of gravity of a subject (for example, see Patent Documents 1 and 2 below). The foot pressure distribution device is a device for measuring and displaying the foot pressure distribution of the subject. According to the device, the position of the center of gravity of the left and right feet is further determined based on the measured foot pressure distribution. It is also possible to calculate and display. On the other hand, the center of gravity shake meter is a device that displays a change in the position of the center of gravity of the subject as a center of gravity locus, and the center of gravity locus can be obtained with a simpler configuration than the foot pressure distribution device.

JP 2011-078534 A JP 2009-056223 A

  However, conventional foot pressure distribution devices and sway meters are not premised on use in motor function recovery training for patients who have developed cranial nervous system diseases. For this reason, there is a problem that the degree of recovery of the motor function cannot be intuitively grasped only by viewing a visualized image (an image showing a foot pressure distribution, an image showing a barycentric locus) or the like.

  This invention is made | formed in view of the said subject, and it aims at enabling it to grasp | ascertain intuitively the recovery | restoration degree of the subject's motor function in motor function recovery training.

One aspect of the present invention relates to an information processing apparatus, and the information processing apparatus uses a foot pressure distribution detection sensor in which a plurality of pressure sensors are two-dimensionally arranged, and uses the foot pressure of a subject at a predetermined cycle. An acquisition means for acquiring foot pressure distribution data obtained by measuring the distribution, and the gravity center position data of the subject is calculated based on the foot pressure distribution data acquired at the predetermined period by the acquisition means. And a display means for displaying a locus of barycentric position data calculated by the calculating means and a predetermined pattern together with the foot pressure distribution data acquired by the acquiring means at the predetermined period, The display means displays the symbol at a position corresponding to the display position of the centroid position data before the start instruction is input. When the start instruction is input, the display means displays the centroid position data already displayed. Clear the marks, the start instruction to display the trajectory of the center of gravity position data calculated by the calculation means after being entered.

  According to the present invention, it becomes possible to intuitively grasp the degree of recovery of the subject's motor function in the motor function recovery training.

  Other features and advantages of the present invention will become apparent from the following description with reference to the accompanying drawings. In the accompanying drawings, the same or similar components are denoted by the same reference numerals.

The accompanying drawings are included in the specification, constitute a part thereof, show an embodiment of the present invention, and are used to explain the principle of the present invention together with the description.
FIG. 1 is a diagram showing an external configuration of a foot pressure distribution measuring system according to an embodiment of the present invention. FIG. 2 is a diagram illustrating a functional configuration of the information processing apparatus that constitutes the foot pressure distribution measurement system. FIG. 3 is a diagram illustrating an example of foot pressure distribution data measured by the foot pressure distribution detection sensor unit. FIG. 4 is a flowchart showing the flow of the training process. FIG. 5 is a diagram illustrating an example of display contents during the training process. FIG. 6 is a diagram illustrating an example of training data recorded during the training process. FIG. 7 is a flowchart showing the flow of training result reproduction processing. FIG. 8 is a diagram illustrating an example of display contents during training result reproduction processing.

  Hereinafter, the details of each embodiment of the present invention will be described with reference to the accompanying drawings as necessary. In addition, this invention is not limited to the following embodiment, It shall change suitably.

[First Embodiment]
<1. Appearance structure of foot pressure distribution measurement system>
FIG. 1 is a diagram illustrating an example of an external configuration of a foot pressure distribution measurement system 100 according to the present embodiment.

  In FIG. 1, reference numeral 110 denotes a sensor unit, which is configured by two-dimensionally arranging a plurality of pressure sensors. When both feet of an upright subject are placed, the foot pressure of both feet of the subject is placed. A foot pressure distribution detection sensor unit 111 capable of detecting the distribution at a predetermined cycle is disposed. It is assumed that the foot pressure distribution detection sensor unit 111 is embedded in the base unit 112 without a step.

  In addition, a slope portion 113 is provided on the outer peripheral side surface of the base portion 112 to smoothly connect a step between the floor surface on which the sensor portion 110 is placed and the surface of the base portion 112. As a result, for example, even when a subject with a high degree of sharp feet places both feet on the foot pressure distribution detection sensor unit 111, the toe is caught by the step between the floor surface and the base unit 112. In addition, it is possible to avoid a risk of falling over due to a step between the base portion 112 and the foot pressure distribution detection sensor portion 111.

  Reference numeral 120 denotes an information processing apparatus, which acquires and displays foot pressure distribution data (measurement results) measured by the foot pressure distribution detection sensor unit 111 via the cable 130 during exercise function recovery training (training). Further, based on the acquired foot pressure distribution data, the position of the center of gravity is calculated and displayed together with the training symbols. Furthermore, foot pressure distribution data and barycentric position data are recorded so as to be reproducible.

  In calculating the center of gravity position, it is not always necessary to use the foot pressure distribution.For example, a center of gravity shake meter is arranged under the foot pressure distribution, and the center of gravity position is calculated based on the value detected by the center of gravity shake meter. It is good also as a structure to calculate.

<2. Functional configuration of information processing device of foot pressure distribution measurement system>
FIG. 2 is a diagram illustrating a functional configuration of the information processing apparatus 120 that configures the foot pressure distribution measurement system 100. As shown in FIG. 2, the information processing apparatus 120 includes a control unit (computer) 201, a memory unit 202, a storage unit 203, a display unit 204, an input unit 205, and an external device I / F unit 206. Are connected via a bus 207.

  The storage unit 203 is executed by the control unit 201, thereby causing a foot pressure distribution calculation unit 211, a gravity center position calculation unit 212 (acquisition unit, calculation unit), and a training function unit 213 (display unit, recording unit, analysis unit), respectively. ), A program functioning as the training result reproducing unit 214 (reproducing means) is stored. The program is appropriately read into the memory unit 202 functioning as a work area under the control of the control unit 201 and executed by the control unit 201, thereby realizing the function of each unit (each unit). Note that data acquired by executing the program by the control unit 201 is recorded in the storage unit 203 as training data 215.

  The display unit 204 displays a user interface for causing the control unit 201 to execute the program, or displays the acquired training data 215. The input unit 205 inputs an instruction for executing the program. The external device I / F unit 206 is an I / F for taking the foot pressure distribution data measured by the foot pressure distribution detection sensor unit 111 into the information processing apparatus 120.

<3. Processing in Foot Pressure Distribution Calculation Unit and Center of Gravity Position Calculation Unit>
Next, processing realized by executing the foot pressure distribution calculation unit 211 and the gravity center position calculation unit 212 will be described. When the foot pressure distribution calculation unit 211 receives the foot pressure distribution data transmitted from the foot pressure distribution detection sensor unit 111 via the external device I / F unit 206, the foot pressure distribution calculation unit 211 identifies the foot pressure value corresponding to each pixel, and Image data of foot pressure distribution is generated by assigning color data corresponding to the identified foot pressure value to each pixel. The generated image data is continuously displayed on the display unit 204.

  The center-of-gravity position calculation unit 212 calculates the center-of-gravity position of the subject based on the coordinates of each pixel and the foot pressure value of each pixel of the foot pressure distribution data received via the external device I / F unit 206. To do. The calculated barycentric position is continuously displayed as a barycentric locus on the display unit 204 in synchronization with the image data of the foot pressure distribution.

  FIG. 3 is a diagram illustrating an example of image data of foot pressure distribution of a patient with right foot paralysis and center of gravity position data indicating a locus of the center of gravity position.

  As is clear from the image data of the foot pressure distribution in FIG. 3, in the case of a patient with right foot paralysis, the ground contact area of the sole differs greatly between the healthy foot (left foot) and the paralyzed foot (right foot). . In other words, the healthy foot (left foot) is partly grounded on the toe side and the heel side, while the paralyzed foot (right foot) is on the sole. Among them, only a part of the toe side is grounded (the heel side is not grounded because of the center of gravity on the toe side).

  For such patients, exercise function recovery training is usually performed so that the center of gravity of the foot on the paralyzed side can move up to the heel side. In the foot pressure distribution measurement system 100 according to the present embodiment, in order to support the exercise function recovery training, a predetermined training pattern (line diagram) is superimposed and displayed on the display position of the gravity center position data. Thereby, the patient can perform the training of the center of gravity movement while checking his / her center-of-gravity position data for the training design in real time. At this time, the foot pressure distribution measurement system 100 can quantify the degree of recovery of the motor function by analyzing the amount of deviation between the training symbol and the gravity center position data (details will be described later).

<4. Processing in the training function section>
Next, processing (training processing) in the training function unit 213 will be described with reference to FIGS. 5 and 6 and FIG. FIG. 4 is a flowchart showing the flow of training processing in the training function unit 213.

  In step S401, display of the foot pressure distribution image data generated by the foot pressure distribution calculation unit 211 is started. In step S402, the display of the centroid position data calculated by the centroid position calculation unit 212 is started.

  5a of FIG. 5 has shown the mode that the image data and gravity center position data of foot pressure distribution were displayed. As shown in 5a of FIG. 5, since the image data of the foot pressure distribution is updated at a predetermined cycle, the latest image data of the foot pressure distribution is displayed on the display unit 204. On the other hand, the barycentric position data is also updated in the same cycle. However, in the case of the centroid position data, the centroid position data before update and the centroid position data after update are connected by a continuous line and displayed as a locus of the centroid position.

  In step S403, the training symbol 501 is displayed on the display unit 204. The display position of the training symbol 501 is not particularly limited. For example, the center of gravity of the patient at the time of training symbol 501 display is acquired, and the acquired center of gravity matches the center of gravity of the training symbol 501. Thus, it is good also as a structure which displays the design 501 for training. 5b of FIG. 5 has shown the mode that the design 501 for training was displayed on the position corresponded with the gravity center position of a patient.

  In step S404, a training start instruction is received via the input unit 205. Further, when a training start instruction is accepted in step S404, in step S405, the trajectory of the displayed center-of-gravity position data is once deleted (reset), and display of the center-of-gravity position data calculated after receiving the training start instruction is started. 5c in FIG. 5 is that when the training start instruction is input, the locus 502 of the center of gravity position data that has been displayed so far is deleted, and the locus 503 of the center of gravity position data calculated after receiving the training start instruction is displayed. It shows the state.

  Under such a display, the patient performs training for center of gravity movement so that the center of gravity position data 503 moves along the training symbol 501. That is, according to the foot pressure distribution measurement system 100 according to the present embodiment, the patient can perform training while comparing the training pattern 501 with his / her center of gravity position data. The patient himself / herself can intuitively know whether or not to do so.

  In step S406, each foot pressure distribution data acquired after receiving the training start instruction is recorded in the storage unit 203 in association with the elapsed time after receiving the training start instruction. Further, in step S407, each gravity center position data calculated after receiving the training start instruction is recorded in the storage unit 203 in association with the elapsed time after receiving the training start instruction. The type of training symbol and the display position are also recorded.

  FIG. 6 is a diagram illustrating an example of each foot pressure distribution data and barycentric position data (training data 215) that has been recorded in steps S406 and S407.

  In step S408, it is determined whether a training end instruction has been received. If it is determined that a training end instruction has not been received, the process returns to step S406, and recording of foot pressure distribution data and barycentric position data is continued. On the other hand, if it is determined in step S408 that a training end instruction has been received, the process proceeds to step S409.

  In step S409, the display of the foot pressure distribution image data is stopped and the display of the gravity center position data is stopped. Thereby, the display unit 204 displays the foot pressure distribution image data at the time when the training end instruction is received, and the locus of the center of gravity position from when the training start instruction is received until the training end instruction is received. It becomes a state.

  In step S410, the shift amount of the center-of-gravity position data from when the training start instruction is received until the training end instruction is received (during training) is analyzed. Specifically, the distance from the position of the center of gravity at each time to the training symbol 501 is integrated and divided by the training time to calculate an average deviation amount with respect to the training symbol 501. Note that the calculated average deviation amount is displayed on the display unit 204.

<5. Processing in the training result playback unit>
Next, processing (training result playback processing) in the training result playback unit 214 will be described with reference to FIG. 7 and FIG. FIG. 7 is a flowchart showing the flow of training result playback processing in the training result playback unit 214.

  In step S701, the selected training data is read from the storage unit 203.

  In step S702, the read training data is continuously reproduced at a predetermined update period. 8a of FIG. 8 has shown the training data immediately after receiving training start instruction among the reproduced training data. Moreover, 8b of FIG. 8 has shown a mode that the patient moved the gravity center to the heel side along the training pattern 501. FIG. Further, 8c in FIG. 8 shows a state where the patient has finished moving the center of gravity along the training symbol 501.

  As shown in 8a to 8c of FIG. 8, according to the foot pressure distribution measuring system 100 according to the present embodiment, the image data of the foot pressure distribution is also continuously displayed in association with the locus of the gravity center position data. Is done. For this reason, the foot pressure distribution can be visually recognized when the shift amount of the center of gravity position data with respect to the training symbol 501 is large, and it is easy to know in which direction the foot pressure distribution is improved by moving the center of gravity. can do.

  In step S703, it is determined whether or not a stop instruction has been input. If it is determined that a stop instruction has been input, the training result reproduction process is terminated.

  Although not shown in FIG. 7, in the foot pressure distribution measurement system 100 according to the present embodiment, instructions such as fast forward, rewind, pause, and frame advance for the training data read in step S701. It is assumed that the processing can be performed and processing based on the input instruction can be performed.

  As is clear from the above description, the foot pressure distribution measurement system 100 according to the present embodiment has a configuration in which the foot pressure distribution image data and the locus of the gravity center position data are displayed in real time on the same screen. . In addition, the training symbols are displayed in the vicinity of the position where the gravity center position data is displayed. In addition, when a training start instruction is input, the trajectory of the center of gravity position data already displayed is reset, and the display of the trajectory of the center of gravity position data is newly started. Thereby, the patient can perform training for the movement of the center of gravity while checking his / her center-of-gravity position data for the training pattern in real time. In addition, the patient himself / herself can intuitively grasp how to move the center of gravity.

  Further, the foot pressure distribution measurement system 100 according to the present embodiment is configured to quantify the average deviation amount of the gravity center position data with respect to the training symbols. As a result, the patient can quantitatively grasp the degree of recovery of motor function.

  Furthermore, in the foot pressure distribution measurement system 100 according to the present embodiment, the foot pressure distribution image data and the gravity center position data during the training time can be reproduced in association with the elapsed time from the input of the training start instruction. It was set as the structure recorded on a memory | storage part.

  This makes it possible to review the training results while associating the centroid position data with the foot pressure distribution image data, and easily analyze in which direction the centroid movement should be improved. Is possible.

[Second Embodiment]
In the first embodiment, the foot pressure distribution data measured by the foot pressure distribution detection sensor unit 111 is directly acquired via the cable 130, but the present invention is not limited to this. For example, it is good also as a structure acquired via radio | wireless, such as Bluetooth.

  Alternatively, a memory is arranged in the sensor unit 110, the foot pressure distribution data measured in the foot pressure distribution detection sensor unit 111 is temporarily stored in the memory, and the foot pressure distribution data stored in the memory is temporarily connected to the cable 130. It is good also as a structure acquired through this. In this case, the foot pressure distribution measurement system 100 is used as a system for analyzing the recovery degree of the patient's motor function.

  In the first embodiment, the sensor unit 110 is formed by one base unit 112 and one foot pressure distribution detection sensor unit 111. However, the present invention is not limited to this.

  For example, the base part for the right foot and the foot pressure distribution detection sensor part for the right foot are separated from the base part for the left foot and the foot pressure distribution detection sensor part for the left foot, and are configured to be detachable or foldable. Also good. In this case, it is desirable that the slope portion 113 is configured to be detachable from the base portion.

  Moreover, in the said 1st Embodiment, although it was set as the structure which displays a circular figure as a training pattern, this invention is not limited to this, Another figure may be sufficient. In the first embodiment, the training symbol is displayed at a position corresponding to the barycentric position data. However, the present invention is not limited to this, and corresponds to, for example, image data of foot pressure distribution. It is good also as a structure which displays the arrow (arrow which showed the direction which wants to move a gravity center) etc. in a position. In this case, the patient exercises the movement of the center of gravity while viewing the image data of the foot pressure distribution.

  The present invention is not limited to the above-described embodiment, and various changes and modifications can be made without departing from the spirit and scope of the present invention. Therefore, in order to make the scope of the present invention public, the following claims are attached.

  This application claims priority based on Japanese Patent Application No. 2012-010299 filed on Jan. 20, 2012, the entire contents of which are incorporated herein by reference.

Claims (8)

An acquisition means for acquiring foot pressure distribution data obtained by measuring a foot pressure distribution of a subject at a predetermined cycle using a foot pressure distribution detection sensor in which a plurality of pressure sensors are two-dimensionally arranged;
A calculation unit based on the foot pressure distribution data that is acquired by the predetermined cycle, calculates the barycentric position data of said subject by the acquisition unit,
Both the foot pressure distribution data that is acquired by the predetermined period by the acquisition unit, and display means for displaying the trajectory of the center of gravity position data that is calculated by the calculation means, and the predetermined symbol,
The display means displays the symbol at a position corresponding to the display position of the centroid position data before the start instruction is input, and when the start instruction is input, the locus of the centroid position data already displayed is displayed. It clears the start instruction information processing apparatus according to claim you to view the trajectory of the center of gravity position data calculated by the calculation means after being entered. The information processing apparatus according to claim 1, wherein the display unit displays the symbol in which a display position of the centroid position data before the start instruction is input matches a centroid position of the symbol . After the previous SL start instruction is input, a foot pressure distribution data obtained in the predetermined period by the acquisition unit, and a center of gravity position data calculated by said calculation means on the basis of a foot pressure distribution data, final until completion instruction is input, the information processing apparatus according to claim 2, before Symbol start instruction, characterized by further comprising a recording means for recording in association with the elapsed time from the input. From the input of pre-Symbol start instruction, and integrating the distance between the center of gravity position data between before Symbol end instruction is input to the symbol, the average amount of deviation of the gravity center position data against the symbol The information processing apparatus according to claim 3, further comprising analysis means for analyzing.   The information processing apparatus according to claim 3, further comprising a reproducing unit that reproduces the foot pressure distribution data and the gravity center position data recorded in the recording unit. It said recording means records together before Symbol symbol and its display position,
It said reproducing means, the information processing apparatus according to claim 5, characterized in that to display the previous SL symbols recorded by the recording means, the display position which has been recorded by the recording means. The information processing apparatus according to any one of claims 1 to 6,
A foot pressure distribution measurement system comprising: a plurality of pressure sensors arranged two-dimensionally, and a foot pressure distribution detection sensor configured to detect a foot pressure distribution of an upright subject.   The program for functioning a computer as each means of the information processing apparatus of any one of Claims 1 thru | or 6.