JP4978866B2 - Pressure distribution measurement sensor device - Google Patents

Description

  INDUSTRIAL APPLICABILITY The present invention is used to determine an exercise program of a patient who has reduced exercise ability related to walking due to aging, illness, injury, etc., and to restore the exercise ability of the patient. The present invention relates to a pressure distribution measurement sensor device.

  Instructed center of gravity position while confirming the center of gravity position of the patient in the standing position using the load cell in order to restore the motor ability of the patient whose ability to walk is reduced due to aging, illness, injury, etc. There is known a technique for performing training for moving the position of the center of gravity so as to coincide with (see Patent Document 1).

JP 07-275307 A

  In the above-described technique, the training content is not changed depending on the patient's motor ability, and therefore, there is a possibility that appropriate training is not performed to recover the patient's motor ability. In this regard, after the instructor knows the patient's motor ability by instructing the patient to perform various actions, the instructor instructs the exercise program to restore the patient's motor ability. Since the grasp is made based on the instructor's many years of experience, it is difficult to accurately grasp the motor ability of the patient.

  A main object of the present invention is to provide a pressure distribution measurement sensor device that can easily grasp athletic ability related to a measurement subject.

The pressure distribution measurement sensor device of the present invention is a sheet-like pressure distribution sensor having a plurality of pressure detection regions that respectively detect pressure applied from the measurement subject, and the measurement subject supported by the pressure distribution sensor. An instruction means for instructing a predetermined operation, and the plurality of pressures included in the pressure distribution data from the pressure distribution sensor when the measured person is supported by the pressure distribution sensor and performs a predetermined operation based on the instruction means from the output value of every predetermined period corresponding to the pressure detected by the respective detection region, the center of gravity trajectory calculation means for calculating the trajectory of the center of gravity of the person to be measured to move on the pressure distribution sensor, the gravity center position based on the trajectory, the a stable contour extraction means for extracting a stable contour as a closed curve in the pressure distribution on the sensor, the load region of the person to be measured in the pressure distribution on the sensor An outer contour calculating means for calculating an outer contour based on the calculated value, and calculating a ratio of the area of the stable contour with respect to an area of the outer contour as a stable contour ratio, and the higher the calculated stable contour ratio, Comparing means for evaluating that the stability of athletic ability is high is provided.

  According to the above configuration, it is possible to calculate the locus of the center of gravity of the measurement subject who swings on the pressure distribution sensor and extract the stable contour based on the region corresponding to the locus. As a result, a stable contour corresponding to the measurement subject's motion indicating the measurement subject's athletic ability can be extracted, and the measurement person can easily grasp the athletic ability state of the measurement subject.

Further, the pressure distribution measurement sensor device of the present invention provides a sheet-like pressure distribution sensor having a plurality of pressure detection areas for detecting pressure applied from the measurement subject, and the measurement subject supported by the pressure distribution sensor. On the other hand, an instruction means for instructing a predetermined operation, and the plurality of items included in the pressure distribution data from the pressure distribution sensor when the measured person is supported by the pressure distribution sensor and performs a predetermined operation based on the instruction means. Centroid trajectory calculation means for calculating a trajectory of the centroid position of the person to be measured that moves on the pressure distribution sensor from an output value for each predetermined period corresponding to the pressure detected in each of the pressure detection areas; Based on the locus of the center of gravity, a stable contour extracting means for extracting a stable contour that is a closed curve on the pressure distribution sensor, and a load area of the measurement subject on the pressure distribution sensor An outer contour calculation means for calculating the outer contour based on, as the center of pressure distribution sensor the starting position of the trajectory of the center of gravity position, from the center of the pressure distribution sensor to longitudinal and lateral directions and eight directions oblique direction between these The ratio of the distance from the center of the pressure distribution sensor to the stable contour in the eight directions with respect to the distance to the outer contour is calculated, and the higher the calculated ratio, the more the movement of the measurement subject in each of the eight directions. Comparing means for evaluating that the stability of ability is high may be provided.

  According to the above configuration, it is possible to calculate the outer contour based on the load region in the stationary state of the measurement subject and compare the outer contour with the stable contour. Thereby, a measurer can grasp | ascertain an athletic ability state correctly.

  According to the above configuration, it is possible to instruct the measurement subject's movement indicating the athletic ability state of the measurement subject. Thereby, it is possible to instruct an appropriate predetermined action in grasping the state of athletic ability.

  Further, the predetermined operation instructed by the instruction means of the pressure distribution measurement sensor device of the present invention may be a rotation operation.

  According to the above configuration, it is possible to indicate the athletic ability state of the measurement subject and to instruct a rotation operation that is an easy operation.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an external view showing a schematic configuration of a pressure distribution measurement sensor device 1 according to the first embodiment. FIG. 2 is a functional block diagram of the pressure distribution measurement sensor device 1.

  The pressure distribution measurement sensor device 1 includes a sheet-like pressure distribution sensor 11 having a plurality of pressure detection regions that respectively detect pressure applied from a measurement subject. The pressure distribution measurement sensor device 1 calculates a locus of the center of gravity position of the measurement subject when the measurement subject performs a predetermined operation on the pressure distribution sensor 11, and extracts a stable contour based on the locus of the gravity center position. Is. Based on the stable contour of the measurement subject extracted by the pressure distribution measurement sensor device 1, the instructor grasps the athletic ability related to the walking of the measurement subject. The stable contour will be described later.

  As shown in FIG. 1, a pressure distribution measurement sensor device 1 includes a sheet-like pressure distribution sensor 11, a pressure detection unit 12 connected to the pressure distribution sensor 11, a personal computer (personal computer) 20, and a pressure detection unit 12. And a connection unit 40 for connecting the personal computer 20 to the personal computer 20. The connection unit 40 includes an interface box 45 and an interface cable 46, and both ends thereof are connected to the pressure detection unit 12 and input / output interfaces (not shown) of the personal computer 20.

  The pressure distribution sensor 11 has a pressure detection region in which a large number of pressure sensitive sensors 11a are arranged in a grid pattern. The thickness of the pressure distribution sensor 11 is about 0.1 to 0.2 mm. A detection plate having sufficient rigidity for the measurement subject to stand on it is not necessary, and both feet of the measurement subject can be placed on the pressure distribution sensor 11. The pressure distribution sensor 11 can be used as a single sheet, but a rubber sheet may be laminated for buffering from the viewpoint of protecting the sheet. Further, for the purpose of facilitating the setting on the floor, the sensor may be laminated on a metal or resin plate such as aluminum that holds the sensor.

  The pressure detection unit 12 is connected to each of a number of pressure sensitive sensors 11a and detects the state of each pressure sensitive sensor 11a. In the present embodiment, the state of each pressure sensor 11a is represented by a digital output value of 0 to 255 corresponding to the pressure applied to them. The pressure detection unit 12 outputs this digital output value to the personal computer 20.

  The personal computer 20 includes a display 21, a keyboard 25, a mouse 26, and a control unit 30 (see FIG. 2). Here, the control unit 30 includes a centroid locus calculation program for controlling various operations related to the pressure distribution measurement sensor device 1, a stable contour extraction program, a hard disk in which data and the like are stored, and each unit of the pressure distribution measurement sensor device 1. In order to generate a signal for controlling the operation, a CPU for executing various calculations, a RAM for temporarily storing data such as calculation results in the CPU, and the like are included.

  As shown in FIG. 2, the control unit 30 includes a barycentric locus calculation unit 131, a stable contour extraction unit 141, an outer contour calculation unit 151, a result analysis unit 161, and a notification control unit 171. In addition, a display 21, a keyboard 25, and a mouse 26 are connected to the control unit 30.

  The center-of-gravity locus calculation unit 131 detects the center-of-gravity position (load state) of the person to be measured on the pressure distribution sensor 11 and calculates the locus of the center-of-gravity position of the person to be measured. The centroid locus calculation unit 131 includes a pressure distribution data storage unit 132, a centroid calculation unit 133, a centroid position storage unit 134, a locus calculation unit 135, and a centroid locus storage unit 136.

  The pressure distribution data storage unit 132 stores the pressure distribution data transmitted from the pressure detection unit 12 to the personal computer 20 via the connection unit 40. The pressure distribution data storage unit 132 stores pressure distribution data for each sample time within the measurement time for each of a large number of pressure sensitive sensors 11 a arranged in a grid pattern on the pressure distribution sensor 11. That is, the pressure distribution data of many pressure-sensitive sensors 11a at one detection time corresponding to each sample time is stored for the number of detection times. Accordingly, it is possible to grasp the temporal change in pressure detected by each pressure sensor 11a based on the pressure distribution data. Further, a temporal change in the pressure distribution detected by the pressure distribution sensor 11 can be detected.

  The center-of-gravity calculation unit 133 calculates the position of the center of gravity of the person to be measured on the pressure distribution sensor 11 at each detection time based on the pressure distribution data stored in the pressure distribution data storage unit 132.

  A calculation method of the center of gravity position in the center of gravity calculation unit 133 will be described with reference to FIG. FIG. 3 shows pressure distribution data detected by a number of pressure sensitive sensors 11a in a predetermined time. In the pressure distribution sensor 11 of the present embodiment, a large number of pressure sensitive sensors 11a are arranged in m + 1 columns in the X-axis direction (left-right direction in the figure) and in n + 1 columns in the Y-axis direction (up-down direction in the figure). Has been placed. Therefore, a large number of pressure-sensitive sensors 11a are arranged in a (m + 1) × (n + 1) lattice shape.

  Further, in FIG. 3, the pressure data detected by each pressure sensor 11a is indicated by a symbol. For example, the pressure data detected by the pressure-sensitive sensor 11a corresponding to the u-th row in the X-axis direction and the v-th row in the Y-axis direction is a (u, v) (where u is 0 or more) m or less, and v is an integer of 0 to n.

In this case, the center-of-gravity position Cfx in the X-axis direction is calculated by the following equation.

Further, the center-of-gravity position Cfy in the Y-axis direction is calculated by the following equation.

  Returning to FIG. 2, the barycentric position storage unit 134 stores the barycentric position calculated by the barycentric calculating unit 133. As described above, the center-of-gravity position storage unit 134 stores the calculated center-of-gravity position in the X-axis direction, the center-of-gravity position in the Y-axis direction, and the detection time corresponding to the center-of-gravity position in association with each other.

  The trajectory calculation unit 135 calculates the trajectory of the centroid position from the centroid position for each detection time stored in the centroid position storage unit 134.

  Here, the locus of the center of gravity position of the measurement subject on the pressure distribution sensor 11 will be described with reference to FIG. FIG. 4 is a diagram for explaining the trajectory of the center of gravity position of the measurement subject, and the footprint 110 shown in phantom in the figure indicates the position of the measurement subject's foot arranged on the pressure distribution sensor 11. Show. In addition, the spiral line in the figure is the locus 111 of the position of the center of gravity of the measurement subject on the pressure distribution sensor 11.

  In the present embodiment, the pressure distribution data for each detection time described above is measured in a state where the measurement subject is performing a predetermined operation. Specifically, the person to be measured stands up on the pressure distribution sensor 11 and is instructed to move for a predetermined time so that his / her head draws a circle around the vertical direction from the foot without moving the foot. That is, the person to be measured operates on the pressure distribution sensor 11 so that the body draws an inverted cone with the foot at the center. Hereinafter, such an operation is referred to as a rotation operation. Pressure distribution data is measured every predetermined period in a predetermined time when the measurement subject performs the rotation operation.

  In the measurement, the predetermined operation performed by the person to be measured is not limited to the rotation operation.

  Moreover, in this Embodiment, although the instruction | indication of the above-mentioned operation | movement is displayed on the display 21 of the pressure distribution measurement sensor apparatus 1, instruction content is not limited to this. A display mode for instructing a predetermined operation on the display 21 will be described later.

  After the coordinates of the barycentric position for each predetermined period are calculated from the pressure distribution data for each predetermined period measured when the measurement subject performs the above-described operation, the trajectory calculation unit 135 calculates the barycentric position for each predetermined period. By connecting the coordinates with a straight line in time series, a trajectory 111 of the center of gravity position formed by bending the straight line into a spiral is calculated. In the present embodiment, the locus 111 of the center of gravity position starts from the position of the center of gravity when the measurement subject is stationary on the pressure distribution sensor 11. Hereinafter, the start position of the locus 111 of the center of gravity is set as the center of the pressure distribution sensor 11.

  The center-of-gravity locus storage unit 136 stores the locus 111 of the calculated center-of-gravity position.

  The stable contour extraction unit 141 extracts and stores a stable contour from the trajectory 111 of the center of gravity position of the measurement subject on the pressure distribution sensor 11. The stable contour extraction unit 141 includes an extraction unit 142 and an extraction result storage unit 143.

  The extraction unit 142 extracts the stable contour 113 as shown in FIG. 5 from the locus of the center of gravity position stored in the center of gravity locus storage unit 136. FIG. 5 is a view for explaining a stable contour 113 and an outer contour 112 to be described later. The stable contour 113 in the drawing shows the stable contour 113 on the pressure distribution sensor 11. The extraction result storage unit 143 stores the extracted stable contour 113.

  Here, the “stable contour” is a characteristic of the calculated locus of the center of gravity indicated by one closed curve. That is, the stable contour is extracted so as to be a closed curve on the pressure distribution sensor 11 based on the locus of the center of gravity position of the measurement subject. The region surrounded by the stable contour includes at least a part of the locus of the center of gravity on the pressure distribution sensor 11. As shown in FIG. 5, the stable contour 113 in the present embodiment is configured by extracting a trajectory formed on the outermost side from the trajectory 111 of the center of gravity position of the measurement subject. Specifically, the start position of the trajectory 111 of the gravity center position and the end position (final measurement position) of the trajectory 111 of the gravity center position are connected by a line segment, and only the outermost contour is selected to extract a stable contour. Is done.

  The outer contour calculation unit 151 calculates and stores the outer contour 112 from the load area of the measurement subject on the pressure distribution sensor 11. The outer contour calculation unit 151 includes a calculation unit 152 and an outer contour storage unit 153.

  The calculation unit 152 calculates the outer contour 112 as shown in FIG. Here, the “outer contour” is a characteristic of the load area of the measurement subject indicated by a closed curve. That is, the outer contour is calculated based on the load area of the measurement subject on the pressure distribution sensor 11. The area surrounded by the outer contour includes at least a part of the load area of the measurement subject on the pressure distribution sensor 11. In the present embodiment, the load area of the measurement subject indicates all coordinate areas in which the pressure distribution sensor 11 has detected the pressure when the measurement subject performs a rotation operation for a predetermined time. Although the outer contour 112 shown in FIG. 5 is a single closed curve, it is not limited to this and may be composed of a plurality of closed curves. Further, the load area of the measurement subject may be detected in a state where the measurement subject is stationary.

  The outer contour storage unit 153 stores the extracted outer contour 112.

  The result analysis unit 161 analyzes the stable contour 113 stored in the extraction result storage unit 143 and compares the stable contour 113 with the outer contour 112 stored in the outer contour storage unit 153. That is, the result analysis unit 161 evaluates the stable contour 113.

  Specifically, the result analysis unit 161 calculates the ratio of the area of the stable contour 113 to the area of the outer contour 112 (hereinafter, stable contour ratio), and classifies the calculation result as shown in FIG. To evaluate the overall stability. For example, if the stable contour ratio is less than 33%, the result analysis unit 161 classifies the result as “narrow”. The result analysis unit 161 classifies the result as “slightly narrow” when the stable contour ratio is 33% or more and less than 38%. Further, the result analysis unit 161 classifies as “average” when the stable contour ratio is 38% or more and less than 43%. In addition, the result analysis unit 161 classifies as “slightly wide” when the stable contour ratio is 43% or more and less than 48%. In addition, the result analysis unit 161 classifies as “wide” when the stable contour ratio is 48% or more. The result analysis unit 161 evaluates that the stability is low as the classification is “narrow”, and evaluates that the stability is high as the classification is “high”.

Further, the result analysis unit 161 evaluates how close the shape of the stable contour 113 is to a perfect circle. Specifically, the result analysis unit 161 analyzes the variation in distance from the center of the pressure distribution sensor 11 to the stable contour 113 in the front and rear, right and left directions, and the eight diagonal directions therebetween. That is, the respective distances to the point where the eight directions intersect with the stable contour 113 are calculated. Then, the smaller the result obtained by subtracting the minimum distance from the maximum distance, the closer to a perfect circle is evaluated.

  Further, the result analysis unit 161 calculates the ratio of the distance from the center to the stable contour 113 with respect to the distance from the center to the outer contour 112 in the eight directions, and evaluates the stability in each direction. The smaller the ratio, the lower the stability, and the higher the ratio, the higher the stability.

  Returning to FIG. 2, the notification control unit 171 instructs the subject to rotate on the pressure distribution sensor 11, the stable contour image 213 based on the stable contour 113, and the outer contour image based on the outer contour 112. 212 and the evaluation contents by the result analysis unit 161 are displayed on the display 21.

  Specifically, the display mode of the above content displayed on the display 21 will be described with reference to FIGS. FIG. 7 is a front view of the display 21 showing the instruction content for causing the measurement subject to perform the rotation operation. FIG. 8 shows the evaluation content by the stable contour image 213, the outer contour image 212, and the result analysis unit 161. It is a front view of the display 21 which shows.

  As shown in FIG. 7, at the start of measurement, an instruction content display screen for causing the subject to rotate is displayed on the display 21. Specifically, an instruction text image 214, a rotation operation explanation image 215, and a rotation operation rotation direction image 216 are displayed on the instruction content display screen.

  The instruction text image 214 is a text image indicating a character string “Please rotate the entire body clockwise until there is an instruction while facing forward”. The rotation operation explanation image 215 is an image for explaining a rotation operation method. The rotation operation rotation direction image 216 is an image for explaining the rotation direction of the rotation operation. Although not shown, an instruction content display screen in the direction opposite to the rotation operation shown in FIG. 7 is also displayed.

  By displaying these images, it is possible to instruct the measurement subject's movement indicating the athletic ability state of the measurement subject. Thereby, it is possible to instruct an appropriate predetermined action in grasping the state of athletic ability. For example, even a measurer who is not accustomed to the actual measurement can correctly instruct the measurement subject to rotate. Further, when the instruction content display screen is presented to the measurement subject, the measurement subject can easily understand how to perform the rotation operation.

  Further, as shown in FIG. 8, after the measurement is completed, an evaluation content display screen for causing the subject to rotate is displayed on the display 21. Specifically, an outer contour image 212, a stable contour image 213, a result comment image 217, and an evaluation comment image 218 are displayed on the evaluation content display screen.

  The outer contour image 212 is obtained by drawing the outer contour 112 as an image. The stable contour image 213 is obtained by drawing the stable contour 113 as an image. As shown in FIG. 8, the outer contour image 212 and the stable contour image 213 are displayed on the upper left portion of the display 21. The stable contour image 213 displays both the case where the measurement subject performs the rotation operation clockwise and the case where the measurement subject performs counterclockwise rotation. Since the outer contour image 212 and the stable contour image 213 are superimposed and displayed, the comparison can be easily performed.

  A result comment image 217 is displayed on the right side of the outer contour image 212 and the stable contour image 213. The result comment image 217 shows the areas of the outer contour 112 and the stable contour 113, the ratio of the stable contour 113 to the outer contour 112, and the evaluation of the ratio. The area of the stable contour 113, the ratio of the stable contour 113 to the outer contour 112, and the evaluation of the ratio are both when the measurement subject performs the rotation operation clockwise and when the measurement subject performs counterclockwise. Is displayed.

  An evaluation comment image 218 is displayed below the outer contour image 212, the stable contour image 213, and the result comment image 217. The evaluation comment image 218 displays advice to the person to be measured based on the result analyzed by the result analysis unit 161. Specifically, the evaluation comment image 218 displays the overall stability, the evaluation of how close the shape of the stable contour 113 is to a perfect circle, and the stability in each direction, and the corresponding comment is displayed. It is supposed to be.

  Next, the operation of the pressure distribution measurement sensor device 1 will be described with reference to FIG. FIG. 9 is a flowchart showing the operation of the pressure distribution measurement sensor device 1. When measurement is started, first, the notification control unit 171 displays on the display 21 an instruction content display screen that instructs the measurement subject to perform a rotation operation on the pressure distribution sensor 11 (step S101). .

  Next, it is determined whether or not the measurement subject has started a rotation operation (step S102). Specifically, it is measured whether or not the pressure distribution data has changed more than a predetermined value. If the pressure distribution data has changed more than a predetermined value, it is determined that the measurement subject has started the rotation operation. When it is determined that the rotation operation has not been started (step S102: NO), the process of step S102 is repeatedly performed to wait for the rotation operation to be started by the measurement subject.

  On the other hand, when it is determined that the person to be measured has started the rotation operation (step S102: YES), the pressure distribution data at that time and the detection time of the pressure distribution data are stored (step S103). Thereafter, it is determined whether or not a predetermined time has elapsed (step S104). If the predetermined time has not elapsed (step S104: NO), it is determined whether or not a predetermined period has elapsed since the previous detection time of the pressure distribution data (step S105). When the predetermined period has not elapsed (step S105: NO), the process of step S105 is repeated, and a standby state is entered until the predetermined period elapses. On the other hand, when the predetermined period has elapsed (step S105: YES), the process returns to step S103.

  On the other hand, when it is determined that the predetermined time has passed in the process of step S104 (step S104: YES), it is notified that one rotation operation is completed, and the locus of the center of gravity is calculated (step S106). . Specifically, after calculating the barycentric position at each detection time from the pressure distribution data, the trajectory of the barycentric position is calculated.

  Then, a stable contour is extracted from the locus of the center of gravity (step S107). Thereafter, it is determined whether or not measurement has been completed in the reverse direction (counterclockwise) of the rotation operation (S108). If the measurement has not been completed for the reverse direction of the rotation operation (step S108: NO), the processing from step S101 to step S107 is repeated. In this case, the rotation operation indicated by the instruction content display screen displayed in step S101 is counterclockwise.

  On the other hand, when the measurement has been completed in the reverse direction of the rotation operation (step S108: YES), the outer contour is calculated from the pressure distribution data, and the result analysis is performed on the outer contour and the stable contour (step S109). Thereafter, an evaluation content display screen is displayed on the display 21 (step S110), and the measurement is terminated.

  Note that the order of processing in the flowchart is not limited to this. For example, the calculation of the locus of the center of gravity (step S106) and the extraction of the stable contour (step S107) are executed after measuring the pressure distribution data of two rotation operations (clockwise and counterclockwise). May be.

  As described above, the pressure distribution measurement sensor device 1 according to the present embodiment includes a sheet-like pressure distribution sensor (pressure distribution sensor 11) having a plurality of pressure detection regions that respectively detect pressure applied from the measurement subject, When the measurement subject is supported by the pressure distribution sensor, the pressure is determined based on the output value for each predetermined period corresponding to the pressure detected in each of the plurality of pressure detection areas included in the pressure distribution data from the pressure distribution sensor. Based on the center of gravity locus calculating means (the center of gravity locus calculating unit 131 and the like) for calculating the locus of the center of gravity of the measurement subject moving on the distribution sensor (the locus of gravity center 111), and on the pressure distribution sensor based on the locus of the center of gravity. And a stable contour extracting means (stable contour extracting unit 141 and the like) for extracting a stable contour (stable contour 113) that becomes a closed curve.

  According to the above configuration, it is possible to calculate the locus of the center of gravity of the measurement subject who swings on the pressure distribution sensor and extract the stable contour based on the region corresponding to the locus. As a result, a stable contour corresponding to the measurement subject's motion indicating the measurement subject's athletic ability can be extracted, and the measurement person can easily grasp the athletic ability state of the measurement subject.

  Further, the pressure distribution measurement sensor device 1 according to the present embodiment includes an outer contour calculation unit (outer contour calculation unit 151) that calculates an outer contour (outer contour 112) based on the load region of the measurement subject on the pressure distribution sensor. Further, a comparison means (a result analysis unit 161 or the like) for comparing the outer contour and the stable contour is further provided.

  According to the above configuration, it is possible to calculate the outer contour based on the load region in the stationary state of the measurement subject and compare the outer contour with the stable contour. Thereby, a measurer can grasp | ascertain an athletic ability state correctly.

  Further, the pressure distribution measurement sensor device 1 according to the present embodiment has an instruction means (display 21 or the like) for giving a predetermined operation instruction (instruction content display screen shown in FIG. 7) to the measurement subject supported by the pressure distribution sensor. ).

  According to the above configuration, it is possible to instruct the measurement subject's movement indicating the athletic ability state of the measurement subject. Thereby, it is possible to instruct an appropriate predetermined action in grasping the state of athletic ability.

  Further, the predetermined operation displayed on the instruction content display screen of the display 21 of the pressure distribution measurement sensor device 1 of the present embodiment is a rotation operation.

  According to the above configuration, it is possible to indicate the athletic ability state of the measurement subject and to instruct a rotation operation that is an easy operation.

  The preferred embodiments of the present invention have been described above, but the present invention is not limited to the above-described embodiments, and various design changes can be made as long as they are described in the claims. For example, the following configuration may be provided in addition to or overlapping with the configuration in the above-described embodiment.

  For example, in the present embodiment, the instruction of the above operation is displayed on the display 21 of the pressure distribution measurement sensor device 1, but is not limited to this. For example, the pressure distribution measurement sensor device 1 may include a speaker and give an instruction by voice, or the pressure distribution measurement sensor device 1 may be written with a text to that effect. Further, the instruction is not limited to that given by the pressure distribution measurement sensor device 1. Further, for example, it may be instructed by a measurer or the like, and the cost of the pressure distribution measurement sensor device 1 may be suppressed.

Further, as shown in FIG. 5, the stable contour in the present embodiment is configured by extracting a trajectory formed on the outermost side from the trajectory of the center of gravity of the measurement subject. There is no limit. For example, the trajectory of the center of gravity is averaged from the center on the pressure distribution sensor 11 (the center of gravity when the person being measured is stationary) to the front and rear, right and left, and eight directions diagonally between them. Also good. Specifically, the stable contour may be obtained by calculating the average coordinates of the intersections with the locus of the center of gravity in each of the eight directions, and connecting these coordinates so as to form a closed curve.

  In addition, for example, the stable contour may be extracted based on only a certain period of predetermined time corresponding to the locus of the center of gravity. For example, specifically, the coordinates passed last in each of the eight directions may be calculated, and these coordinates may be connected to form a closed curve.

  Further, for example, the stable contour may be one that extracts the maximum contour of the closed space formed by the locus of the center of gravity.

  In addition, the outer contour in the present embodiment is the contour of all coordinate regions in which the pressure distribution sensor 11 has detected pressure, but is not limited thereto. For example, the outer contour may be a load area of the measurement subject that is detected while the measurement subject is stationary. Moreover, the outline of the area | region which projected the back of the to-be-measured person's foot may be sufficient, and what was formed in the virtual closed curve based on this may be sufficient.

  For example, the outer contour may be calculated as follows. The outer contour is scanned in the X-axis direction while changing the position in the Y-axis direction with respect to the load area of the measurement subject, and the X-axis maximum coordinate and minimum coordinate are calculated for one Y-axis component. A closed curve may be formed so as to trace the load area of the measurement subject with respect to the coordinates.

  Moreover, although the stable outline in this Embodiment was extracted separately about two rotation operation | movements, it is not limited to this. For example, one stable contour may be extracted from the trajectories of two centroid positions in two rotation operations. In this case, one stable contour image 213 is displayed on the evaluation content display screen.

It is an external view which shows schematic structure of the pressure distribution measurement sensor apparatus which concerns on the 1st Embodiment of this invention. It is a functional block diagram of the pressure distribution measurement sensor apparatus of FIG. It is a figure which shows the pressure distribution data detected by the pressure sensor shown in FIG. It is a figure for demonstrating the locus | trajectory of the gravity center position of a to-be-measured person on the pressure distribution sensor shown in FIG. It is a figure for demonstrating a stable outline and an outer outline. It is a figure for demonstrating the classification | category of the comprehensive stability of a stable outline. It is a front view of a display showing an instruction content display screen. It is a front view of the display which shows the evaluation content display screen. It is a flowchart which shows operation | movement of the pressure distribution measurement sensor apparatus shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pressure distribution measurement sensor apparatus 11a Each pressure sensor 11 Pressure distribution sensor 11a Pressure sensor 12 Pressure detection part 20 Personal computer 21 Display 25 Keyboard 26 Mouse 30 Control part 40 Connection unit 45 Interface box 46 Interface cable 110 Foot shape 111 Trajectory of gravity center position 112 Outer contour 113 Stable contour 131 Center of gravity trajectory calculation unit 132 Pressure distribution data storage unit 133 Center of gravity calculation unit 134 Center of gravity position storage unit 135 Trajectory calculation unit 136 Center of gravity trajectory storage unit 141 Stable contour extraction unit 142 Extraction unit 143 Extraction result storage unit 151 Outside Outline calculation unit 152 Calculation unit 153 Outer contour storage unit 161 Result analysis unit 171 Notification control unit 212 Outer contour image 213 Stable contour image 214 Instruction text image 215 Rotation operation explanation image 216 Rotation operation The rolling direction image 217 result comment image 218 evaluation comment image

Claims (3)

A sheet-like pressure distribution sensor having a plurality of pressure detection regions for detecting pressure applied from the measurement subject,
Instructing means for instructing a predetermined operation to the measurement subject supported by the pressure distribution sensor;
When the person to be measured is supported by the pressure distribution sensor and performs a predetermined operation based on the instruction means, the pressure detected by each of the plurality of pressure detection areas included in the pressure distribution data from the pressure distribution sensor. A center-of-gravity locus calculating means for calculating a locus of the center of gravity of the measurement subject moving on the pressure distribution sensor from an output value corresponding to each predetermined period;
Stable contour extracting means for extracting a stable contour that is a closed curve on the pressure distribution sensor based on the locus of the center of gravity;
An outer contour calculating means for calculating an outer contour based on the load area of the measurement subject on the pressure distribution sensor;
Comparing means for calculating the ratio of the area of the stable contour to the area of the outer contour as a stable contour ratio, and evaluating that the higher the calculated stable contour ratio is, the higher the stability of the exercise ability of the measured person is When,
A pressure distribution measuring sensor device comprising: A sheet-like pressure distribution sensor having a plurality of pressure detection regions for detecting pressure applied from the measurement subject,
Instructing means for instructing a predetermined operation to the measurement subject supported by the pressure distribution sensor;
When the person to be measured is supported by the pressure distribution sensor and performs a predetermined operation based on the instruction means, the pressure detected by each of the plurality of pressure detection areas included in the pressure distribution data from the pressure distribution sensor. A center-of-gravity locus calculating means for calculating a locus of the center of gravity of the measurement subject moving on the pressure distribution sensor from an output value corresponding to each predetermined period;
Stable contour extracting means for extracting a stable contour that is a closed curve on the pressure distribution sensor based on the locus of the center of gravity;
An outer contour calculating means for calculating an outer contour based on the load area of the measurement subject on the pressure distribution sensor;
With the start position of the locus of the center of gravity as the center of the pressure distribution sensor, the pressure distribution sensor has a distance from the center of the pressure distribution sensor to the outer contour in the front / rear / left / right direction and the eight diagonal directions between them. Comparing means for calculating the ratio of the distance from the center to the stable contour in the eight directions, the higher the calculated ratio, the higher the stability of the athletic ability in each of the eight directions of the measured person,
A pressure distribution measuring sensor device comprising:   The pressure distribution measurement sensor device according to claim 1, wherein the predetermined operation is a rotation operation.

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