JP6649594B2 - Indentation amount measuring device, indentation amount measuring method and indentation amount measurement program - Google Patents

Description

  The present invention relates to a pushing amount measuring device, a pushing amount measuring method, and a pushing amount measuring program.

  As one of the diagnostic methods of Kampo medicine, there is "abdominal examination" in which the abdomen is pushed in to measure the pushing amount and pressure. Abdominal examination has been performed empirically and intuitively by Chinese medicine doctors. In recent years, methods for objectively diagnosing the result of abdominal examination using various sensors have been studied.

  Further, as a measurement technique for a human body using a sensor, the following measurement method has been proposed. In this method, a pulse wave detection unit in which an acceleration sensor, a light emitting unit, and a light receiving unit are integrated is attached to a fingertip of a subject's finger. Pressing information when a person presses an object is detected based on the light receiving level of the light receiving unit. Further, displacement information is generated by a double integration process of the acceleration information by the acceleration sensor.

JP-A-10-212172

  In the measurement of the pushing amount in the abdominal examination, for example, a method using a gauge or a motion capture camera fixed by a jig can be considered. However, this method requires a large fixing mechanism for fixing the camera and the gauge around the examination bed.

  On the other hand, a method of measuring the pushing amount using a compact device configuration using a three-dimensional acceleration sensor is also conceivable. For example, a doctor presses the abdomen of a patient with a finger with the acceleration sensor attached to the finger. By integrating the measured value obtained from the acceleration sensor twice in accordance with the pushing motion, the pushing amount can be theoretically obtained as the finger displacement amount. However, this method has a problem that the measurement accuracy is apt to be reduced due to the influence of the other axis sensitivity.

Further, the above-described problem is not limited to the abdomen, and may occur when pushing into other parts of the human body.
In one aspect, an object of the present invention is to provide a pushing amount measuring device, a pushing amount measuring method, and a pushing amount measuring program capable of improving the accuracy of measuring the pushing amount to a part of a human body.

  In one case, the following indentation amount measuring device is provided. This pushing amount measuring device has an acquiring unit, a speed calculating unit, and a pushing amount calculating unit. The acquisition unit may include a detection result obtained by an acceleration sensor attached to the first part while performing a pushing operation in which the first part of the body of the measurer pushes the second part of the body of the subject. And the detection result obtained by the pressure sensor attached to the pushing surface of the part. The speed calculation unit calculates a plurality of first speeds of the first portion at each of a plurality of measurement timings from the start of the pushing operation by integrating the acceleration detected by the acceleration sensor. In addition, the speed calculation unit corrects the plurality of first speeds so that the speed at the specific timing at which the pressure detected by the pressure sensor is maximum among the plurality of measurement timings becomes zero, and corrects the plurality of first speeds. The speed of 2 is calculated. The pushing amount calculation unit calculates the pushing amount of the first portion by integrating the plurality of second velocities.

According to another embodiment, there is provided a method for measuring the amount of indentation in which the same processing as that of the apparatus for measuring indentation is performed by a computer.
Further, in one proposal, there is provided a pushing amount measuring program for causing a computer to execute the same processing as that of the above pushing amount measuring device.

In one aspect, it is possible to improve the measurement accuracy of the amount of pushing into a part of a human body.
The above and other objects, features and advantages of the present invention will become apparent from the following description taken in conjunction with the accompanying drawings which illustrate preferred embodiments of the present invention.

FIG. 2 is a diagram illustrating a configuration example and a processing example of the indentation amount measuring device according to the first embodiment. It is a figure showing the example of composition of the measuring system concerning a 2nd embodiment. FIG. 3 is a diagram illustrating an example of a hardware configuration of a measurement control device. It is a figure showing an example of a measurement result of acceleration, speed, and displacement based on a detection signal of an acceleration sensor. It is a figure showing an example of a measurement result of acceleration, speed, and pressure. FIG. 3 is a block diagram illustrating a configuration example of a processing function included in the measurement control device. It is a flowchart which shows the example of the processing procedure at the time of abdominal examination. FIG. 4 is a diagram illustrating an example of a relationship between a sampling rate of each sensor and an interval between measurement points. It is a figure showing an example of calculation of the amount of displacement based on speed before amendment. It is a figure showing an example of calculation of the amount of displacement based on speed after amendment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
FIG. 1 is a diagram illustrating a configuration example and a processing example of a press-in amount measuring device according to the first embodiment. The pushing amount measuring device 10 measures the pushing amount of the body 1 of the subject when the body part 1 of the measurer performs the pushing operation of pushing the body part 2 of the subject. For example, the pushing amount measuring device 10 measures the pushing amount (maximum pushing amount) when the part 1 is pushed farthest into the part 2. The site 1 is, for example, a finger of a measurer. The site 2 is, for example, the abdomen of the subject. In the present embodiment, as an example, it is assumed that the part 1 of the subject is pushed in a downward direction with the surface of the part 2 of the subject facing upward.

  An acceleration sensor 1a and a pressure sensor 1b are mounted on the part 1 of the measurer. The acceleration sensor 1a detects the acceleration of the part 1 during the execution of the pushing operation. The pressure sensor 1b is mounted on the pressing surface of the part 1, and detects the pressure applied to the pressing surface during the pressing operation.

  The pushing amount measuring device 10 includes an acquiring unit 11, a speed calculating unit 12, and a pushing amount calculating unit 13. The processing of the acquisition unit 11, the speed calculation unit 12, and the depression amount calculation unit 13 is realized, for example, by the depression amount measurement device 10 executing a predetermined program.

  The acquisition unit 11 acquires the detection results of the acceleration sensor 1a and the pressure sensor 1b during the execution of the pushing operation. Each detection result is acquired a plurality of times at regular intervals, for example.

  The speed calculation unit 12 calculates the speed of the part 1 at each of a plurality of measurement timings from the start of the pushing operation by integrating the acceleration detected by the acceleration sensor 1a. Hereinafter, the speed calculated at each measurement timing will be referred to as “speed before correction”. The pre-correction speed is calculated, for example, as shown in a graph 21 of FIG.

  In addition, the speed calculation unit 12 determines a timing T at which the pressure detected by the pressure sensor 1b becomes maximum from among the plurality of measurement timings. Here, in the pushing operation, when the part 1 is pushed to the innermost part of the part 2, the pressure on the pushing surface becomes maximum. At this time, that is, at the timing T, the speed of the part 1 should be zero. However, as in the example of the graph 21, the speed V at the timing T calculated based on the acceleration may not become zero. The main reason for this is that a noise component due to the influence of the other axis sensitivity is included in the detected value of the acceleration, and this noise component appears in the calculated value of the speed.

  Therefore, the speed calculation unit 12 corrects each calculated pre-correction speed so that the speed at the timing T becomes zero. Hereinafter, the speed at which each speed before correction is corrected is referred to as “post-correction speed”. The corrected speed is calculated, for example, as shown in a graph 22 of FIG.

  The pushing amount calculating unit 13 calculates the pushing amount of the part 1 by integrating the calculated corrected speeds. The pushing amount calculation unit 13 may output the pushing amount of the part 1 at each measurement timing or the pushing amount at the timing T1, that is, the maximum pushing amount in the pushing operation, as the final output value.

  In the above-described indentation amount measuring apparatus 10, the indentation amount is calculated based on the principle that the displacement (that is, the indentation amount) of the region 1 is obtained by double integrating the acceleration of the region 1. However, the acceleration detected by the acceleration sensor 1a is easily affected by the sensitivity of the other axis. For this reason, the noise component due to the influence of the other axis sensitivity is amplified by accelerating the acceleration twice, and a large error may occur in the calculated value of the pushing amount due to the amplified noise component.

  Therefore, the indentation amount measuring device 10 determines the timing T at which the pressure detected by the pressure sensor 1b becomes maximum, and corrects each pre-correction speed calculated from the acceleration so that the speed at the timing T becomes zero. . Then, the indentation amount measuring device 10 calculates the indentation amount of the part 1 by integrating the corrected speed obtained by the correction. As a result, it is possible to reduce an error appearing in the calculated value of the press-in amount, and to improve the calculation accuracy.

  The graph 23 of FIG. 1 shows an example of the push amount before correction calculated based on the speed before correction and the push amount after correction calculated based on the speed after correction. By using the corrected speed, the calculation accuracy of the press-in amount at each measurement timing can be improved. Further, when the post-correction speed is used, the pushing amount at the time when the part 1 pushes the part 2 and then returns to the position at the start of pushing is corrected so as to approach zero.

[Second embodiment]
Next, as a second embodiment, a measurement system capable of measuring the amount of pressure and the pressure of a finger on the abdomen in abdominal examination will be described.

  FIG. 2 is a diagram illustrating a configuration example of a measurement system according to the second embodiment. The measurement system illustrated in FIG. 2 includes an acceleration sensor 81, a pressure sensor 82, a detection circuit 83, and a measurement control device 100.

  The acceleration sensor 81 is a sensor that detects acceleration in three axial directions. The acceleration sensor 81 is mounted on a nail side of a finger of a measurer (for example, a doctor). The pressure sensor 82 is mounted on the abdominal side of the same finger, and is capable of detecting the pressure received by the finger from the abdomen when the abdomen of the subject is pressed by the finger. In the following description, it is assumed that the subject's finger presses the abdomen downward while the subject is lying on his back.

  Each detection signal of the acceleration sensor 81 and the pressure sensor 82 is supplied to the detection circuit 83 through a signal line. The detection circuit 83 is mounted at a position that does not interfere with the operation of the abdominal examination, such as the back of the hand, wrist, and arm of the measurer. The detection circuit 83 converts each detection signal supplied from the acceleration sensor 81 and the pressure sensor 82 into digital measurement data. The detection circuit 83 wirelessly transmits the converted measurement data to the measurement control device 100. As a wireless communication method, for example, Bluetooth (registered trademark) can be used.

  Note that the acceleration sensor 81, the pressure sensor 82, and the detection circuit 83 are mounted on, for example, the surface of a glove. When the measurer wears the glove on his hand, the acceleration sensor 81, the pressure sensor 82, and the detection circuit 83 are arranged at positions as shown in FIG.

  Thus, in this embodiment, a large-scale device such as a plurality of cameras for motion capture, a gauge for displacement measurement, and a mechanism for fixing them around the examination bed is not used. Instead, the measurement is performed by a compact configuration of the acceleration sensor 81, the pressure sensor 82, and the detection circuit 83 worn on the hand of the measurer.

  The measurement control device 100 receives acceleration and pressure measurement data from the detection circuit 83. During the abdominal examination, the measurement control device 100 acquires acceleration and pressure measurement data from the detection circuit 83 at regular sampling time intervals. Hereinafter, the acquisition timing of measurement data of acceleration and pressure may be referred to as “measurement point”. Based on the acquired measurement data, the measurement control device 100 calculates the amount of displacement of the finger of the measurer, that is, the amount of pushing into the abdomen, and the change in pressure.

FIG. 3 is a diagram illustrating an example of a hardware configuration of the measurement control device. The measurement control device 100 is realized, for example, as a computer as shown in FIG.
The measurement control device 100 is entirely controlled by a processor 101. Processor 101 may be a multiprocessor. The processor 101 is, for example, a central processing unit (CPU), a micro processing unit (MPU), a digital signal processor (DSP), an application specific integrated circuit (ASIC), a graphics processing unit (GPU), or a programmable logic device (PLD). . Further, the processor 101 may be a combination of two or more elements among a CPU, an MPU, a DSP, an ASIC, a GPU, and a PLD.

A RAM (Random Access Memory) 102 and a plurality of peripheral devices are connected to the processor 101 via a bus 108.
The RAM 102 is used as a main storage device of the measurement control device 100. The RAM 102 temporarily stores at least a part of an OS (Operating System) program and an application program to be executed by the processor 101. Further, the RAM 102 stores various data necessary for processing by the processor 101.

  Peripheral devices connected to the bus 108 include a hard disk drive (HDD) 103, a graphic processing device 104, an input interface 105, a reading device 106, and a wireless communication interface 107.

  The HDD 103 is used as an auxiliary storage device of the measurement control device 100. The HDD 103 stores an OS program, an application program, and various data. It should be noted that another type of non-volatile storage device such as an SSD (Solid State Drive) can be used as the auxiliary storage device.

  A display device 104a is connected to the graphic processing device 104. The graphic processing device 104 displays an image on the screen of the display device 104a according to a command from the processor 101. Examples of the display device 104a include a liquid crystal display and an organic EL (ElectroLuminescence) display.

  An input device 105a is connected to the input interface 105. The input interface 105 transmits a signal output from the input device 105a to the processor 101. The input device 105a includes a keyboard, a pointing device, and the like. Examples of the pointing device include a mouse, a touch panel, a tablet, a touch pad, and a trackball.

  A portable recording medium 106a is attached to and detached from the reading device 106. The reading device 106 reads data recorded on the portable recording medium 106a and transmits the data to the processor 101. Examples of the portable recording medium 106a include an optical disk, a magneto-optical disk, and a semiconductor memory.

The wireless communication interface 107 transmits and receives data to and from the detection circuit 83.
With the above hardware configuration, the processing functions of the measurement control device 100 can be realized.

Next, with reference to FIG. 4, a description will be given of a problem in a case where a displacement amount (a pushing amount) is calculated based on a detection signal of the acceleration sensor 81.
FIG. 4 is a diagram illustrating an example of a measurement result of acceleration, velocity, and displacement based on a detection signal of the acceleration sensor. Note that the acceleration shown in FIG. 4 indicates an acceleration in a vertical direction along the pressing direction of the finger.

  The measurement control device 100 can calculate the speed of the finger by integrating the measured acceleration. Further, the measurement control device 100 can calculate the amount of displacement of the finger by further integrating the calculated speed. The transition of the speed and the displacement amount shown in FIG. 4 is calculated based on the transition of the acceleration in such a procedure. By measuring the acceleration from a state in which the finger touches the surface of the abdomen without applying pressure and stands still, the relative displacement of the finger with respect to the position at the start of pressing is calculated.

  Here, at the time of an abdominal examination, the finger of the measurer is first displaced downward, and after being pushed to the innermost position, the direction of displacement is reversed upward. For this reason, the speed originally takes a negative value at the beginning, changes to a positive value when the finger is fully pushed down, and becomes 0 when the finger returns to the original position at the start of pushing. become. Therefore, the displacement amount of the finger originally takes a negative value while the pressing is performed, and returns to 0 when the finger returns to the original position at the start of the pressing. However, in the example of FIG. 4, the speed and the displacement amount at the time when the finger returns to the original position at the start of pushing are not zero, but are shifted in the positive direction.

  The measured value of the acceleration by the acceleration sensor 81 is easily affected by the sensitivity of the other axis. It is considered that the noise component due to the influence of the other axis sensitivity is amplified by integrating the acceleration twice as described above, and a large error occurs in the displacement amount due to the amplified noise component.

  In order to solve such a problem, the measurement control device 100 of the present embodiment corrects the speed calculated based on the acceleration by the method described below with reference to FIG. I do.

  FIG. 5 is a diagram illustrating an example of measurement results of acceleration, velocity, and pressure. From the clinical data so far, in the abdominal examination, when the pushing pressure on the abdomen is at the maximum, the finger is pushed all the way back, the pushing amount (depth) is at the maximum, and the pushing speed is reduced to 0. It turns out to be.

  Utilizing this, the measurement control device 100 sets the speed value (deviation from 0) calculated based on the acceleration at the time Tp when the pressure measured by the pressure sensor 82 reaches the maximum value (peak value). Amount) is estimated as the cumulative error Verr of the speed. Then, the measurement control device 100 divides the accumulated error Verr by the pressing time TM from the pressing start time (T0) at which the pressing of the finger is started from the stationary state to the time Tp. As a result, an estimated speed error per unit time is calculated. The measurement control device 100 corrects the speed calculated for each measurement point after the pressing start time T0 using the estimated speed error value, and calculates the displacement amount based on the corrected speed. As a result, an error occurring in the displacement amount can be reduced.

In FIG. 5, the speed deviation at the time Tp is exaggerated for easy understanding.
Next, details of the measurement control device 100 will be described.

  FIG. 6 is a block diagram illustrating a configuration example of a processing function included in the measurement control device. The measurement control device 100 includes a measurement data acquisition unit 111, a speed calculation unit 112, a displacement calculation unit 113, and a storage unit 114. The processing of the measurement data acquisition unit 111, the speed calculation unit 112, and the displacement calculation unit 113 is realized, for example, by the processor 101 executing a predetermined application program. The storage unit 114 is realized, for example, as a storage area of the RAM 102 or the HDD 103. The measurement data acquisition unit 111, the speed calculation unit 112, and the displacement calculation unit 113 are examples of the acquisition unit 11, the speed calculation unit 12, and the pushing amount calculation unit 13 illustrated in FIG. 1, respectively.

  The measurement data acquisition unit 111 receives the measurement data of the acceleration and the pressure from the detection circuit 83 at regular sampling time intervals, and stores the data in the storage unit 114. Further, the measurement data acquisition unit 111 calculates a three-dimensional acceleration vector from which the component of the gravitational acceleration has been removed based on the detection data of the acceleration, and stores it in the storage unit 114. Thereby, the measured value of the pressure and the acceleration vector are stored in the storage unit 114 for each measurement point.

  The speed calculation unit 112 determines the pressing start time T0 and the time Tp at which the pressing amount becomes maximum based on the measured value of the pressure. Specifically, the speed calculation unit 112 sets a time at which the measured value of the pressure exceeds a predetermined threshold from the start of the measurement as the press-in start time T0. Further, the speed calculation unit 112 sets the time at which the measured value of the pressure is the maximum as the time Tp at which the pushing amount is the maximum.

  The speed calculation unit 112 calculates a speed vector at each measurement point by an integration operation using the acceleration vector at each measurement point after the pressing start time T0. In addition, the speed calculation unit 112 calculates the magnitude of the component in the vertical direction (vertical speed) of each of the calculated speed vectors. Further, the speed calculator 112 extracts the speed at the time Tp as the accumulated error Verr. Then, the speed calculation unit 112 corrects the speed at each measurement point using the accumulated error Verr.

  The displacement calculation unit 113 calculates the amount of displacement (indentation amount) at each measurement point by an integral operation using the corrected speed. The displacement calculation unit 113 writes the displacement amount and the change in pressure at each measurement point from the pressing start time T0 to the time Tp in a data file, and stores the data file in the storage unit 114 as information to be finally output. .

  The storage unit 114 stores the measurement data obtained from the detection circuit 83 and the speed and displacement calculated based on the measurement data for use by the measurement data acquisition unit 111, the speed calculation unit 112, and the displacement calculation unit 113. Various data to be stored are stored.

Next, a processing procedure of the measurement control device 100 at the time of abdominal examination will be described using a flowchart.
FIG. 7 is a flowchart illustrating an example of a processing procedure at the time of abdominal examination.

[Step S11] The measurement control device 100 starts a measurement process. For example, the measurement is started in response to a measurer's instruction operation on the measurement control device 100 to start the measurement.
[Step S12] The measurement data acquisition unit 111 receives measurement data of acceleration and pressure from the detection circuit 83. The measurement data acquisition unit 111 stores the received measurement data in the storage unit 114 together with the measurement time.

  [Step S13] The measurement data acquisition unit 111 determines whether to end the measurement. For example, when the measurer performs an operation to instruct the measurement control device 100 to end the measurement, it is determined that the measurement is to be ended. When the measurement ends, the process of step S14 is performed. On the other hand, when the measurement is continued, the process of step S12 is performed again after a certain time has elapsed.

  [Step S14] The measurement data acquisition unit 111 calculates a three-dimensional acceleration vector from which the gravitational acceleration component has been removed, based on the stored acceleration measurement data at each measurement point. The measurement data acquisition unit 111 stores the calculated acceleration vector in the storage unit 114 in association with the measurement time.

  [Step S15] The speed calculator 112 refers to the stored pressure measurement data and determines the time at which the pressure exceeds a predetermined threshold from the start of the measurement as the press-in start time T0. Further, after the pressing start time T0, the speed calculation unit 112 determines the time at which the pressure becomes maximum as the time Tp at which the pressing amount becomes maximum. Further, the speed calculation unit 112 calculates a pressing time TM from the pressing start time T0 to the time Tp.

  [Step S16] The speed calculation unit 112 calculates a speed vector for each measurement point by an integration operation using the acceleration vector at each measurement point after the pushing start time T0. For example, when the measurement point at the pressing start time T0 is the first measurement point, the velocity vector at the n-th measurement point is obtained by adding the acceleration vector at each of the first to n-th measurement points for each axis component. Is calculated.

  In addition, the speed calculating unit 112 calculates the speed of the component in the finger pressing direction based on the calculated speed vectors. In the present embodiment, since the pushing direction is the vertical direction, the speed of the component in the vertical direction is calculated.

[Step S17] The speed calculator 112 extracts the speed at the time Tp as the accumulated error Verr.
[Step S18] The speed calculation unit 112 corrects the speed for each measurement point calculated in step S16 using the accumulated error Verr.

  Here, the time from the pressing start time T0 to the measurement point is t, and the speed before correction at the measurement point is v (t). The speed calculation unit 112 calculates the corrected speed by v (t) -Verr ÷ TM × t.

  [Step S19] The displacement calculation unit 113 calculates a displacement amount (push amount) at each measurement point by an integration operation using the corrected velocity for each measurement point. For example, when the measurement point at the pressing start time T0 is the first measurement point, the displacement amount of the n-th measurement point is calculated by adding the corrected velocities at the first to n-th measurement points. Is done.

  The displacement calculator 113 outputs at least the displacement amount at the time Tp as final output information. This displacement amount corresponds to the distance from the finger pressing start position to the position when the finger is pressed to the end, that is, the maximum pressing amount. This displacement amount is calculated by adding the corrected speed for each measurement point from the push start time T0 to the time Tp in step S19.

  Further, the displacement calculation unit 113 may generate the following information including the above-described displacement amount (maximum pushing amount) as final output information. For example, the displacement calculation unit 113 writes the displacement amount and the pressure at the time Tp in a data file and stores the data in the storage unit 114. Alternatively, the displacement calculating unit 113 writes the displacement amount and the change in pressure at each measurement point from the pressing start time T0 to the time Tp in a data file and stores the data file in the storage unit 114.

  In the process of FIG. 7 described above, the measurement data by the acceleration sensor 81 and the measurement data by the pressure sensor 82 are acquired at each measurement point at fixed time intervals. However, as another example, the intervals between the measurement points may be determined in consideration of the respective sampling rates of the acceleration sensor 81 and the pressure sensor 82.

  FIG. 8 is a diagram illustrating an example of the relationship between the sampling rate of each sensor and the interval between measurement points. FIG. 8 shows an example in which the sampling rate of the acceleration sensor 81 is twice the sampling rate of the pressure sensor 82. The interval between the measurement points is made to coincide with the sampling interval of the pressure sensor 82.

  In this case, the measurement data acquisition unit 111 receives acceleration measurement data each time measurement is performed by the acceleration sensor 81, and receives pressure measurement data each time measurement is performed by the pressure sensor 82. The measurement data acquisition unit 111 sets one measurement data received from the pressure sensor 82 as a pressure measurement value at one measurement point. On the other hand, the measurement data acquisition unit 111 calculates an average value of two measurement data continuously received from the acceleration sensor 81, and sets the calculated average value as a measurement value of acceleration at one measurement point. Thereby, even when the sampling interval of the pressure sensor 82 and the interval of the measurement points are shorter than the sampling interval of the acceleration sensor 81, the amount of indentation can be calculated by using all the measurement data measured by the pressure sensor 82. The calculation accuracy of the quantity can be improved.

Next, a description will be given of a calculation example of the displacement amount when the speed before correction and the speed after correction are used.
FIG. 9 is a diagram illustrating a calculation example of the displacement amount based on the speed before correction. FIG. 10 is a diagram illustrating a calculation example of the displacement amount based on the corrected speed. For reference, FIG. 9 also shows the speed before correction, and FIG. 10 also shows the speed after correction.

  In this example, it is assumed that the speed before the correction at the time Tp has a positive error. In this case, the speed after the correction is corrected in the negative direction as a whole by the correction such that the speed before the correction at the time Tp approaches 0. Accordingly, the displacement amount based on the corrected speed is also corrected in the negative direction as a whole. Further, the displacement amount based on the corrected speed is corrected so as to approach 0 when the finger returns to the original position at the start of pushing, and it can be seen that the accuracy of the displacement amount is increased.

  According to the measurement system according to the second embodiment described above, the speed calculated based on the measured value of the acceleration can be corrected by using the measured value of the pressure. As a result, the amount of displacement of the finger, that is, the amount of pushing into the abdomen can be measured with high accuracy.

  Here, as an example of another measuring method of the pushing amount, there is a method using motion capture. By using motion capture, the amount of press-in can be measured with high resolution. However, in order to avoid the influence of blind spots caused by deformation of the hand of the measurer or the abdomen of the subject, it is necessary to take pictures from various directions using a large number of cameras. Furthermore, a large camera frame is required to keep the positional relationship between the cameras unchanged.

  On the other hand, in the present embodiment, the amount of finger pushing is reduced by a system having a simple configuration using compact measurement devices such as the acceleration sensor 81, the pressure sensor 82, and the detection circuit 83 that are worn on the hand of the measurer. It can measure with high accuracy.

  Note that the processing functions of the devices (the indentation amount measuring device 10 and the measurement control device 100) described in each of the above embodiments can be realized by a computer. In this case, a program describing the processing content of the function that each device should have is provided, and the computer executes the program to implement the processing function on the computer. The program describing the processing content can be recorded on a computer-readable recording medium. Computer-readable recording media include magnetic storage devices, optical disks, magneto-optical recording media, and semiconductor memories. The magnetic storage device includes a hard disk device (HDD), a flexible disk (FD), a magnetic tape, and the like. The optical disc includes a DVD (Digital Versatile Disc), a DVD-RAM, a CD-ROM (Compact Disc-Read Only Memory), and a CD-R (Recordable) / RW (ReWritable). Examples of the magneto-optical recording medium include an MO (Magneto-Optical disk).

  When distributing the program, for example, portable recording media such as DVDs and CD-ROMs on which the program is recorded are sold. Alternatively, the program may be stored in a storage device of a server computer, and the program may be transferred from the server computer to another computer via a network.

  The computer that executes the program stores, for example, the program recorded on the portable recording medium or the program transferred from the server computer in its own storage device. Then, the computer reads the program from its own storage device and executes processing according to the program. Note that the computer can also read the program directly from the portable recording medium and execute processing according to the program. Further, the computer can also execute processing according to the received program each time the program is transferred from a server computer connected via a network.

  The above merely illustrates the principles of the invention. In addition, many modifications and changes will be apparent to those skilled in the art and the present invention is not limited to the exact configuration and application shown and described above, but all corresponding variations and equivalents may be Claims and their equivalents are considered to be within the scope of the invention.

Reference numerals 1 and 2 1a Acceleration sensor 1b Pressure sensor 10 Push amount measuring device 11 Acquisition unit 12 Speed calculation unit 13 Push amount calculation unit 21-23 Graph

Claims (6)

A detection result obtained by an acceleration sensor attached to the first part while the pushing operation of the first part of the body of the measurer pushing the second part of the body of the subject is performed; An acquisition unit that acquires a detection result obtained by a pressure sensor attached to a pushing surface of
By integrating the acceleration detected by the acceleration sensor, a plurality of first velocities of the first portion at each of a plurality of measurement timings from the start of the pushing operation are calculated, and the plurality of first velocities of the plurality of measurement timings are calculated. A speed calculator that corrects each of the plurality of first speeds and calculates a plurality of second speeds such that the speed at a specific timing at which the pressure detected by the pressure sensor is maximized becomes 0; ,
A pushing amount calculating unit that calculates the pushing amount of the first portion by integrating the plurality of second velocities;
Indentation amount measuring device having: The speed calculation unit extracts a speed at the specific timing from among the plurality of first speeds as a third speed, and calculates an error generation amount per unit time based on the third speed, Correcting the plurality of first speeds based on the amount of occurrence of the error;
The indentation amount measuring device according to claim 1. The pushing amount calculating unit calculates the pushing amount of the first portion at the specific timing,
An indentation amount measuring device according to claim 1 or 2. The speed calculator, when the pressure detected by the pressure sensor exceeds a predetermined threshold, determines that the pushing operation has been started,
An indentation amount measuring device according to any one of claims 1 to 3. Computer
A detection result obtained by an acceleration sensor attached to the first part during execution of a pushing operation in which the first part of the body of the measurer pushes the second part of the body of the subject; And the result of detection by the pressure sensor attached to the pushing surface of
By integrating the acceleration detected by the acceleration sensor, a plurality of first velocities of the first portion at each of a plurality of measurement timings from the start of the pushing operation is calculated,
Among the plurality of measurement timings, the plurality of first speeds are respectively corrected and the plurality of second speeds are corrected so that the speed at a specific timing at which the pressure detected by the pressure sensor is maximum becomes zero. Calculate,
Calculating the pushing amount of the first portion by integrating the plurality of second velocities;
Indentation amount measurement method. On the computer,
A detection result obtained by an acceleration sensor attached to the first part during execution of a pushing operation in which the first part of the body of the measurer pushes the second part of the body of the subject; And the result of detection by the pressure sensor attached to the pushing surface of
By integrating the acceleration detected by the acceleration sensor, a plurality of first velocities of the first portion at each of a plurality of measurement timings from the start of the pushing operation is calculated,
Of the plurality of measurement timings, the plurality of first speeds are corrected and the plurality of second speeds are corrected so that the speed at a specific timing at which the pressure detected by the pressure sensor is maximum becomes zero. Calculate,
Calculating a pushing amount of the first portion by integrating the plurality of second velocities;
Indentation amount measurement program that executes processing.

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