Motion state monitoring system, motion state monitoring method, and motion state monitoring program

Abstract

To provide a motion state monitoring system, a motion state monitoring method, and a program capable of reducing a sensor attaching time and suppressing falling of a sensor.SOLUTION: A motion state monitoring system 1 for monitoring a motion state in an object region of the body of a subject P includes: measuring equipment 2 for measuring a motion state and a motion state monitoring device 3 for monitoring the motion state. The measuring equipment 2 includes a sensor 200 for detecting the motion state and a holding part 210 for holding the sensor 200. The holding part 210 includes a bag 211 formed of a flexible member. The bag 211 includes an insertion port 212 extending in one direction, and holds the sensor 200 inserted from the insertion port 212 inside. When attaching the holding part 210 that holds the sensor 200 in the bag, to the object region, the holding part 210 is attached to the object region so that the bag 211 extends in one direction.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present disclosure relates to an operation status monitoring system, an operation status monitoring method, and an operation status monitoring program. [Background technology]

[0002] Patent Document 1 discloses a motion status monitoring system that monitors the motion status of a target part of a subject's body. The motion status monitoring system of Patent Document 1 includes a sensor that is attached to the target part, and an attachment pad and a belt-shaped band as an attachment mechanism for the sensor. The sensor is connected to the band attached to the target part via the attachment pad. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2022-034450 Summary of the Invention [Problem to be solved by the invention]

[0004] For patients with paralysis, the therapist must move the subject's arm to attach the sensor, which can be difficult and time-consuming to adjust and wrap the band around, and the sensor can fall off the mounting pad.

[0005] The present disclosure has been made to solve such problems, and aims to provide an operating status monitoring system, an operating status monitoring method, and an operating status monitoring program that can reduce the sensor installation time and prevent the sensor from falling off. [Means for solving the problem]

[0006] A motion status monitoring system according to one aspect of the present disclosure is a motion status monitoring system that monitors the motion status of a target part of a subject's body, and includes a measuring instrument that measures the motion status and a motion status monitoring device that monitors the motion status, wherein the measuring instrument has a sensor that detects the motion status and a holding part that holds the sensor, and the holding part includes a bag formed of an elastic material, the bag has an insertion opening that extends in one direction and holds the sensor inserted from the insertion opening therein, and when the holding part holding the sensor in the bag is attached to the target part, the holding part is attached to the target part so that the bag stretches in the one direction.

[0007] In the above-described operational condition monitoring system, the bag may include a cloth as a material and a lid for covering the insertion opening.

[0008] In the above operational status monitoring system, the measuring instrument may further have a mounting portion for mounting on the target portion, and the holding portion may be attached to the target portion via the mounting portion extending in one direction.

[0009] In the above-described motion status monitoring system, the holding portion and the mounting portion may have holes formed in portions corresponding to predetermined positions of the target area, and the portion of the mounting portion facing the body may be black.

[0010] In the above operational status monitoring system, the holding portion may be attached to the mounting portion by a hook-and-loop fastener.

[0011] In the above operational state monitoring system, the holding portion may include a transmission portion that transmits light emitted from a light emitting portion provided in the sensor.

[0012] In the above-mentioned operating status monitoring system, the operating status monitoring device may have an acquisition unit that acquires sensing information of the sensor attached to the target portion, an attachment direction detection unit that detects the attachment direction of the sensor, and a control processing unit that outputs sensing-related information related to the sensing information in correspondence with the attachment direction of the sensor.

[0013] In the above operational state monitoring system, the mounting direction of the sensor may be a mounting direction of the sensor with respect to a direction that is predetermined depending on the target portion.

[0014] In the above-mentioned operating state monitoring system, the mounting direction of the sensor may be a mounting direction of the sensor relative to an axial direction of the mounting part that is mounted on the target site.

[0015] In the above-mentioned operating status monitoring system, the control processing unit may, upon detecting an event in which the mounting orientation changes during measurement by the sensor, output the sensing-related information after the event in correspondence with the mounting orientation after the event.

[0016] In the above-mentioned operation state monitoring system, the control processing unit may execute a calculation process on the sensing information or the sensing-related information according to the mounting direction, and output a result of the calculation process in association with the mounting direction of the sensor. The control processing unit may output the sensing-related information by using an algorithm that is machine-learned using the mounting direction and the sensing-related information as learning data.

[0017] A motion state monitoring method according to one aspect of the present disclosure is a motion state monitoring method for monitoring a motion state of a target part of a subject's body using a motion state monitoring system, the motion state monitoring system comprising a measuring instrument for measuring the motion state and a motion state monitoring device for monitoring the motion state, the measuring instrument having a sensor for detecting the motion state and a holding part for holding the sensor, the holding part including a bag formed of an elastic member, the bag having an insertion opening extending in one direction and holding the sensor inserted from the insertion opening therein, the holding part being attached to the target part so that the bag stretches in the one direction when the holding part holding the sensor in the bag is attached to the target part, the holding part comprising the steps of acquiring sensing information of the sensor attached to the target part, detecting an attachment direction of the sensor, and outputting sensing-related information related to the sensing information in correspondence with the attachment direction of the sensor.

[0018] A motion state monitoring program according to one aspect of the present disclosure is a motion state monitoring program that causes a computer included in a motion state monitoring system to monitor the motion state of a target part of a subject's body, the motion state monitoring system comprising a measuring instrument that measures the motion state and a motion state monitoring device that monitors the motion state, the measuring instrument having a sensor that detects the motion state and a holding part that holds the sensor, the holding part including a bag formed of an elastic member, the bag having an insertion opening extending in one direction and holding the sensor inserted from the insertion opening inside, when the holding part holding the sensor in the bag is attached to the target part, the holding part is attached to the target part so that the bag stretches in the one direction, and the computer is caused to execute the steps of acquiring sensing information of the sensor attached to the target part, detecting the attachment direction of the sensor, and outputting sensing-related information related to the sensing information in correspondence with the attachment direction of the sensor. Effect of the Invention

[0019] The present disclosure makes it possible to provide an operation status monitoring system, an operation status monitoring method, and an operation status monitoring program that can reduce the time required to attach a sensor and prevent the sensor from falling off. [Brief description of the drawings]

[0020] [Figure 1] 1 is a configuration diagram illustrating an operation status monitoring system according to a first embodiment. [Diagram 2] 3 is an explanatory diagram illustrating an example of a mounting mechanism for a sensor of a measuring device in the operational status monitoring system according to the first embodiment. FIG. [Diagram 3] 3 is an explanatory diagram illustrating an example of a mounting mechanism for a sensor of a measuring device in the operational status monitoring system according to the first embodiment. FIG. [Figure 4] 3 is an explanatory diagram illustrating an example of a mounting mechanism for a sensor of a measuring device in the operational status monitoring system according to the first embodiment. FIG. [Diagram 5] 3 is an explanatory diagram illustrating an example of a mounting mechanism for a sensor of a measuring device in the operational status monitoring system according to the first embodiment. FIG. [Figure 6] 3 is an explanatory diagram illustrating an example of a mounting mechanism for a sensor of a measuring device in the operational status monitoring system according to the first embodiment. FIG. [Figure 7] 3 is an explanatory diagram illustrating an example of a mounting mechanism for a sensor of a measuring device in the operational status monitoring system according to the first embodiment. FIG. [Figure 8] 3 is a diagram illustrating an example of a mounting direction of a sensor in a measuring instrument in the operational status monitoring system according to the first embodiment. FIG. [Figure 9] 4 is a diagram for explaining an initial reference direction in the operation status monitoring system according to the first embodiment. FIG. [Figure 10] 1 is a block diagram illustrating a measuring instrument and an operation status monitoring device in an operation status monitoring system according to a first embodiment. [Figure 11] 4 is a flow chart illustrating an operation state monitoring method using the operation state monitoring system according to the first embodiment. FIG. [Figure 12]4 is a diagram illustrating an example of a display screen of a display unit before measurement is started in the operation status monitoring system according to the first embodiment. FIG. [Figure 13] 4 is a diagram illustrating an example of a display screen of a display unit at the end of measurement in the operation status monitoring system according to the first embodiment. FIG. [Figure 14] 11 is a diagram illustrating an example of the data structure of a calculation processing table used by a control processing unit in the operation status monitoring system according to the second embodiment. FIG. [Figure 15] FIG. 11 is a flow chart illustrating an operation status monitoring method using the operation status monitoring system according to the third embodiment. [Figure 16] FIG. 1 is a schematic configuration diagram illustrating an operation status monitoring device including a computer according to the embodiment described above. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] Hereinafter, a specific configuration of this embodiment will be described with reference to the drawings. The following description shows a preferred embodiment of this disclosure, and the scope of this disclosure is not limited to the following embodiment. In addition, all of the configurations described in this embodiment are not necessarily essential as a means for solving the problem. For clarity of explanation, the following description and drawings are omitted and simplified as appropriate. In each drawing, the same elements are given the same reference numerals, and repeated explanations are omitted as necessary.

[0022] <Embodiment 1> First, a motion state monitoring system according to the first embodiment will be described. FIG. 1 is a configuration diagram illustrating a motion state monitoring system 1 according to the first embodiment. The motion state monitoring system 1 monitors the motion state of a body part of a subject P. The motion state monitoring system 1 also supports the subject P to make the motion of the subject P closer to a desired motion based on the monitoring result of the motion of the subject P. Specifically, the motion state monitoring system 1 measures the motor function of the subject P, including rehabilitation trainees and elderly people. The motion state monitoring system 1 then analyzes, evaluates, and manages the measurement results to support the training of the subject P. The subject P attaches the sensor 200 to a predetermined part of the body and performs an exercise test. For example, the exercise test is a motor function test that measures the motion state of a body part when the subject P performs a specified motion and measures the motor function. The motion state monitoring system 1 includes, for example, a training support system.

[0023] In the following, the designated motion is called a motion to be monitored. The motion to be monitored is determined corresponding to a body part. For example, the motion to be monitored includes shoulder flexion and extension, shoulder abduction and abduction, shoulder internal and external rotation, neck flexion and extension, neck rotation, elbow flexion and extension, hip internal and external rotation, forearm pronation and external rotation, or thoracic and lumbar lateral bending. In addition, the motion to be monitored may be determined separately for the left and right parts when the part is either the left or right. The part to be monitored is called a target part. As a target part, one or more target parts may be associated with one motion to be monitored, and the same target part may be associated with different motions to be monitored.

[0024] As shown in Fig. 1, the motion state monitoring system 1 includes a measuring instrument 2 and a motion state monitoring device 3. The motion state monitoring device 3 may be called the motion state monitoring system 1. The motion state monitoring device 3 is a device that monitors the motion state of a target part of the body of a subject P. Note that the measuring instruments 2-1, 2-2, ..., etc. shown in the figure are collectively called measuring instruments 2.

[0025] The measuring instrument 2 measures the motion state of the target part of the body of the subject P. Specifically, the measuring instrument 2 is a measuring device that measures the moving direction and amount of movement of the target part. The measuring instrument 2 has a sensor 200 that detects the motion state. In this embodiment, the measuring instrument 2 may have an acceleration sensor and an angular velocity sensor. The measuring instrument 2 measures its own acceleration and angular velocity. Specifically, the measuring instrument 2 may include a three-axis acceleration sensor and a three-axis angular velocity sensor. In this case, the measuring instrument 2 measures the amount of movement in three axial directions of the XYZ axes and the rotation angle around the three axes. The measurement axes are not limited to three axes, and may be two or less axes. In addition, the measuring instrument 2 may have a geomagnetic sensor that detects geomagnetism and measures the direction in which the measuring instrument 2 is facing. The sensors 200-1, 200-2, ..., etc. shown in the figure are collectively called sensors 200.

[0026] Each measuring instrument 2 is connected to the operation status monitoring device 3 in a communicable state. In this embodiment, communication between each measuring instrument 2 and the operation status monitoring device 3 is short-range wireless communication such as Bluetooth (registered trademark), NFC (Near Field Communication), and ZigBee. However, the communication is not limited to this, and may be wireless communication via a network such as a wireless LAN (Local Area Network). Furthermore, the communication may be wired communication via the Internet, a LAN, a WAN (Wide Area Network), or a network configured including a combination of these.

[0027] In addition to the sensor 200, the measuring instrument 2 has an attachment mechanism for the sensor 200 (e.g., a holding section and a wearing section, etc.). The sensor 200 is attached to an attachment position 20 corresponding to a target part of the body of the subject P via the attachment mechanism. In order to measure various monitoring target actions, each of the multiple sensors 200 is linked to a target part of the body of the subject P and can be attached to the linked target part. In the figure, the target parts to which the sensors can be attached are indicated by attachment positions 20-1, 20-2, ..., 20-11. Each attachment position 20-1, 20-2, ..., 20-11 is linked to each sensor 200-1, 200-2, ..., 200-11. For example, the attachment positions 20-1, 20-2, ..., 20-11 are respectively called the right upper arm, right forearm, head, chest (trunk), waist (pelvis), left upper arm, left forearm, right thigh, right lower leg, left thigh, and left lower leg. The attachment positions 20 and the sensor 200 are linked by previously pairing the sensor 200 with the operation state monitoring device 3 and by associating the identification information (ID) of the attachment position 20 with the ID of the sensor 200 on the application of the operation state monitoring device 3. The attachment positions 20-1, 20-2, ..., etc. are collectively called the attachment positions 20.

[0028] In this embodiment, the attachment positions 20 used in the exercise test are selected from attachment positions 20-1 to 20-11 according to the motion to be monitored selected by the user. The user is a user who uses the motion state monitoring device 3, and is, for example, the subject P himself or a staff member who performs the exercise test. Then, the subject P or the staff member attaches the sensor 200 (sensors 200-1, 200-2, 200-6, 200-7 in this figure) associated with the selected attachment position 20 (attachment positions 20-1, 20-2, 20-6, 20-7 in this figure) to the body of the subject P, and starts the exercise test.

[0029] Although a plurality of sensors 200 each associated with a respective one of a plurality of mounting positions 20 are prepared in the above embodiment, the number of mounting positions 20 prepared may be one. Also, the number of sensors 200 prepared may be one.

[0030] The sensor 200 starts measurement in response to the start of the exercise test, and transmits sensing information to the motion status monitoring device 3. The sensing information may include acceleration information, angular velocity information, or quaternion information. The sensing information may also include components in each of these measurement axis directions (X-axis direction, Y-axis direction, and Z-axis direction). Then, the sensor 200 stops measurement in response to the end of the exercise test.

[0031] The motion state monitoring device 3 monitors the motion state of the target body part of the subject P during the exercise test. The motion state monitoring device 3 also analyzes, evaluates, and manages information related to the motion state. The motion state monitoring device 3 includes, for example, a computer device. Specifically, the motion state monitoring device 3 may include a personal computer, a notebook computer, a mobile phone, a smartphone, a tablet terminal, or other communication terminal device capable of inputting and outputting data. The motion state monitoring device 3 may also include a server computer. In this embodiment, the motion state monitoring device 3 will be described as a tablet terminal.

[0032] The motion status monitoring device 3 is used by the user during, before and after the exercise test. The motion status monitoring device 3 receives a selection of a motion to be monitored from the user, and notifies the user of an attachment position 20 corresponding to the target body part. Then, the motion status monitoring device 3 transmits a request to start or stop measurement to the sensor 200 in response to the start or end of the exercise test.

[0033] Furthermore, in response to receiving the sensing information from the sensor 200, the operation state monitoring device 3 outputs sensing related information as a measurement result. Here, the sensing related information indicates information related to the sensing information, and may include the sensing information itself. The sensing related information may also be information obtained by performing various conversion processes on the sensing information. Furthermore, the sensing related information may be information obtained by performing arithmetic processes based on the sensing information. The sensing related information may include information related to the above-mentioned operation state. Note that the information related to the above-mentioned operation state may include the sensing related information. In other words, the information related to the operation state is information based on the sensing related information, and may include the sensing related information itself.

[0034] The operation state monitoring device 3 may be communicably connected to an external server (not shown) via a network. The external server may be a computer device or a cloud server on the Internet. In this case, the operation state monitoring device 3 may transmit sensing-related information or information related to the operation state of the subject P that it holds to the external server.

[0035] Here, the attachment mechanism of the measuring instrument 2 will be described with reference to Fig. 2 to Fig. 7. Fig. 2 to Fig. 7 are explanatory diagrams illustrating an attachment mechanism of the sensor 200 of the measuring instrument 2 in the operation state monitoring system 1 according to the embodiment 1. Fig. 3 shows a perspective view of Fig. 2.

[0036] 2 and 3, the measuring instrument 2 has a holder 210 as an attachment mechanism (attachment tool). Thus, the measuring instrument 2 has a sensor 200 and a holder 210. Here, an αβγ orthogonal coordinate axis system is introduced to explain the attachment mechanism of the measuring instrument 2. The extension direction of the holder 210 is defined as the α-axis direction, and two directions perpendicular to the α-axis are defined as the β-axis direction and the γ-axis direction. The αβγ orthogonal coordinate axis system may or may not correspond to the XYZ orthogonal coordinate axis system that is the measurement axis.

[0037] The holding unit 210 holds the sensor 200. The holding unit 210 may be called an attachment pad. The holding unit 210 may include a bag 211 formed of a stretchable member. The bag 211 may include cloth as a material. Note that not only the bag 211 but also the holding unit 210 may include cloth as a material. Furthermore, the stretchable member of the bag 211 is not limited to cloth, and may include a stretchable resin member such as rubber or vinyl.

[0038] The bag 211 has an insertion opening 212 extending in one direction. The one direction is, for example, the α direction. The bag 211 holds the sensor 200 inserted from the insertion opening 212 inside. The bag 211 is, for example, a quadrangle having a side extending in the α-axis direction and a side extending in the β-axis direction. Note that the bag 211 is not limited to a quadrangle shape, and may be an ellipse or the like, as long as it can hold the sensor 200 inside. Also, the bag 211 may include a cutout such as a hole in a part, or may include a member different from other parts in a part. The insertion opening 212 is formed, for example, on a side on the +β-axis direction side of the bag 211. Then, the sensor 200 is inserted from the insertion opening 212 in the -β-axis direction. Note that the insertion opening 212 may be formed in the center part of the bag 211, not limited to a side on the +β-axis direction side of the bag 211, as long as it extends in one direction.

[0039] When the holder 210 holding the sensor 200 in the bag 211 is attached to a target part of the body of the subject P, the holder 210 is attached to the target part with the bag 211 stretching in one direction. When the bag 211 stretches in one direction, for example, the α-axis direction, the insertion opening 212 also stretches in the α-axis direction. This makes it possible to prevent the insertion opening 212 from opening in the β-axis and γ-axis directions, and prevents the sensor 200 from falling out of the bag 211.

[0040] For example, the surface of the holding portion 210 on the -γ-axis direction side may have a joint including an adhesive or the like. The holding portion 210 is attached to the target site by the joint. The joint may include a hook and loop fastener. The holding portion 210 may be attached by the hook and loop fastener. Note that the holding portion 210 may be attached to the target site by a fastener such as a hook or a snap.

[0041] 4, the bag 211 may include a lid 213 that covers the insertion opening 212. That is, the bag 211 may include a storage section 214 and the lid 213. The storage section 214 is a portion in which the sensor 200 is stored. The lid 213 has a rectangular shape extending in the α-axis direction along the insertion opening 212. A portion of the lid 213 on the +β-axis direction side is connected to a portion of the bag 211 on the +β-axis direction side. A portion of the lid 213 on the -β-axis direction side is open. The lid 213 covers the insertion opening 212.

[0042] The storage section 214 and the lid 213 may be formed of a stretchable material. Therefore, when the holding section 210 is attached to the target site with the bag 211 stretched in one direction, the lid 213 comes into close contact with the insertion opening 212. This makes it possible to prevent the insertion opening 212 from opening in the β-axis direction and the γ-axis direction, and prevents the sensor 200 from falling out of the bag 211.

[0043] As shown in FIG. 5, the measuring device 2 may further include a mounting section 220. Thus, the measuring device 2 includes a sensor 200, a holding section 210, and the mounting section 220. The mounting section 220 is a member to be mounted on a target site. The mounting section 220 may be called, for example, a band. The mounting section 220 is, for example, a band-like shape extending in the α-axis direction. The mounting section 220 may be formed of a member having elasticity. Thus, the mounting section 220 may include a member extending in one direction. The mounting section 220 has the holding section 210 attached to a part of the mounting section 220. For example, the holding section 210 is attached to a surface of the mounting section 220 on the γ-axis direction side. As a result, the holding section 210 is attached to the target site via the mounting section 220 extending in one direction. The holding section 210 may be attached to the mounting section 220 by the joint described above. The holding part 210 may be attached to the mounting part 220 by, for example, a hook and loop fastener. The holding part 210 may be attached to the mounting part 220 by a fastener such as a hook or a snap. The mounting part 220 extends in one direction and is attached to the target site. This makes it possible to prevent the insertion opening 212 of the holding part 210 from opening.

[0044] As shown in FIG. 6, the holding part 210 and the mounting part 220 may have holes 215 and 225 formed in a portion corresponding to a predetermined position of the target site. In addition, when the mounting part 220 is not provided, the holding part 210 may have a hole 215 formed in a portion corresponding to a predetermined position of the target site. The holes 215 and 225 may be circular or rectangular. The hole 215 has a shape such that the sensor 200 does not come off the holding part 210. For example, the diameter of the hole 215 is made smaller than the length of the sensor 200. The hole 225 has a shape such that the sensor 200 and the holding part 210 do not come off the mounting part 220. For example, the diameter of the hole 225 is made smaller than the length of the sensor 200 and the holding part 210. The holes 215 and 225 may have the same shape or different shapes.

[0045] By forming the holes 215 and 225, the sensor 200 can come into contact with the target site. This allows the sensor 200 to perform sensing by contact. Furthermore, when the sensor 200 performs sensing using inspection light such as infrared light, anything that blocks the light can be eliminated, thereby improving the accuracy of sensing.

[0046] The holding unit 210 and the mounting unit 220 are preferably black in the portions facing the body of the subject P. When the mounting unit 220 is provided, only the portion of the mounting unit 220 facing the body of the subject P may be black. When the sensor 200 performs sensing using inspection light such as infrared light, the sensor 200 detects reflected light reflected from a target site of the subject P. Therefore, it is preferable that the sensor 200 detects reflected light only from the target site. Therefore, if the portions facing the body of the subject P, such as the mounting unit 220, are black except for the hole 225, it is possible to prevent the sensor 200 from detecting reflected light from parts other than the target site.

[0047] 7, the sensor 200 may include a light emitting unit 216. The light emitting unit 216 includes a light emitting member such as an LED (Light Emitting Diode). The light emitting unit 216 may indicate, for example, whether the power supply of the sensor 200 is on or off, or may indicate the remaining battery charge. The light emitting unit 216 may also indicate that sensing is in progress, or that sensing has ended. The light emitting unit 216 may also indicate a predetermined state other than the above-mentioned states.

[0048] The holding portion 210 may include a transmitting portion 217. The transmitting portion 217 may include, for example, a portion that is thinner than other portions of the holding portion 210. The transmitting portion 217 may also include a transparent member. The transmitting portion 217 may be provided in a hole, a notch, or the like in the bag 211. The transmitting portion 217 may also be provided over the entire bag 211, not just in a part of the bag 211. In this manner, the holding portion 210 may include the transmitting portion 217 that transmits light emitted from the light emitting portion 216 provided in the sensor 200.

[0049] By including the transmission portion 217 in the holding portion 210, information indicated by the sensor 200 can be notified to users such as the subject P and staff.

[0050] The sensor 200 is attached to the target site via the holding part 210, or via the holding part 210 and the mounting part 220. In this way, the sensor 200 is attached to the mounting position 20 of the target site.

[0051] Here, the mounting direction of the sensor 200 will be described. FIG. 8 is a diagram illustrating the mounting direction of the sensor 200 in the measuring device 2 in the operating state monitoring system 1 according to the first embodiment. As shown in FIG. 8, the mounting direction of the sensor 200 is the mounting direction of the sensor 200 with respect to a reference direction D. In FIG. 8, the reference direction D is defined as the axial direction of the mounting unit 220 (e.g., a band) mounted on the target part (e.g., the upper right arm). The mounting direction indicates the relative direction of the sensor 200 with respect to the reference direction D, which is the axial direction. Specifically, the mounting direction is determined based on an angle θ1 (called a mounting angle) between the reference direction D and the measurement axis A of the sensor 200. The measurement axis A may be determined in advance, and may be, for example, any of the α-axis, β-axis, and γ-axis of the sensor coordinate system. For example, as shown in FIG. 8, when the mounting angle θ1 is 0°, the sensor 200 is mounted so that the measurement axis A is parallel to the reference direction D. When the mounting angle θ1 is 90°, the sensor 200 is mounted so that the measurement axis A is perpendicular to the reference direction D. Note that the mounting angle θ1 is not limited to 0° and 90°. In this manner, the mounting direction of the sensor 200 may be the mounting direction of the sensor 200 relative to a direction that is predetermined according to the target site.

[0052] The reference direction D is a direction in which the attachment direction with respect to the sensor 200 does not change relatively even if the target part is moved during the monitored movement. In other words, even if the target part is moved during the monitored movement, the angle between the reference direction D and the measurement axis A of the sensor 200 (for example, 0° or 90° as shown in FIG. 8) does not change. In other words, the reference direction D is a direction that changes in conjunction with the absolute direction of the sensor 200 during the monitored movement. Here, the "absolute direction" is a direction based on the direction of gravity or the horizontal direction, and is, for example, a direction in a coordinate system (X S ,Y S ,Z S ) may be the direction defined by X S The axis is the horizontal axis in the anterior-posterior direction with respect to the subject P, and the Y S The axis is the horizontal axis in the left-right direction with respect to subject P, and the Z S The axis is the vertical axis in the direction of gravity. Thus, the reference direction D is a direction that changes in conjunction with the sensor 200 with respect to an absolute direction during the monitored movement.

[0053] Here, in this embodiment, the reference direction D can be defined according to the target part. For example, when the mounting unit 220 (e.g., a band) is mounted on the target part, there is a certain preferred mounting direction for each target part. For example, when the target part is an arm, the mounting unit 220 is preferably mounted so that its reference direction D is approximately parallel to the axial direction of the arm (i.e., the extension direction of the arm) from the viewpoint of ease of mounting and ease of movement. Conversely, it is difficult to mount the mounting unit 220 so that the reference direction D is approximately perpendicular to the axial direction of the arm. Therefore, the axial direction of the mounting unit 220 as the reference direction D can be defined in advance according to the target part. In this way, the mounting direction of the sensor 200 may be the mounting direction of the sensor 200 relative to the axial direction of the mounting unit 220 mounted on the target part.

[0054] 8, the sensor 200 is attached to the target part using the attachment part 220 such as a band, but the attachment part 220 may be omitted. In this case, the sensor 200 may be attached to clothing or the skin via the holding part 210. Even in this case, the reference direction D is a direction defined in advance according to the target part, such as the axial direction of the target part.

[0055] In this embodiment, the attachment mechanism (holding unit 210, wearing unit 220, etc.) of the measuring instrument 2 may include a change mechanism for changing the attachment direction of the sensor 200. The change mechanism may be any mechanism that allows the attachment direction of the sensor 200 to be changed. For example, when the holding unit 210 has a joint that can be used repeatedly, the attachment direction may be freely changed. In addition, when the sensor 200 is attached to the target site using a connector between a belt or clothes, the attachment direction of the sensor 200 may be changed using a knob or the like linked to the connector after the sensor 200 is attached so as to substantially coincide with the reference direction D. In addition, when the sensor 200 is attached using a connector having a shape capable of clamping the sensor 200 in a plurality of attachment directions, the sensor 200 may be attached in one attachment direction selected from the plurality of attachment directions.

[0056] In this embodiment, the reference direction D can be specifically determined in advance in accordance with the target part in the initial state, that is, in a stationary state. FIG. 9 is a diagram for explaining the initial reference direction D in the motion state monitoring system 1 according to the first embodiment. As shown in FIG. 9, the absolute direction of the initial reference direction D is determined in accordance with each target part. In the figure, the absolute direction of the initial reference direction D is Z S The initial reference direction D of the upper arm is expressed by an angle θ0 between the Z axis and the target object. The angle θ0 may be determined based on an average human skeleton. In this embodiment, the initial reference direction D of the upper arm is expressed by an angle θ0 between the Z axis and the target object. S It faces outward relative to the axis, and for example, the angle θ0 of the right upper arm may be defined as 5°.

[0057] In addition, the initial reference direction D of the forearm is Z SFor example, the angle θ0 of the right forearm may be set to 10°, which is further outward with respect to the axis. The angle θ0 for each part may be set for each subject P based on attribute information such as the age, sex, height, or weight of the subject P.

[0058] In this way, even if the initial reference direction D changes depending on the target part, the initial reference direction D may be specifically determined. Therefore, at least the initial attachment direction can be converted into an absolute direction that is a unique index for the subject P.

[0059] The sensor 200 according to this embodiment is configured so that the mounting direction can be changed. Therefore, the user can freely set the mounting direction of the sensor 200, which can improve convenience. Also, depending on the sensor 200, the accuracy of the measurement result can be improved by setting the sensor 200 in a suitable direction.

[0060] Hereinafter, the mounting direction relative to the reference direction D will be simply referred to as the "mounting direction."

[0061] FIG. 10 is a block diagram illustrating a measuring instrument 2 and an operating state monitoring device 3 in an operating state monitoring system 1 according to the first embodiment. As described above, the operating state monitoring system 1 includes a measuring instrument 2 and an operating state monitoring device 3. The measuring instrument 2 has a sensor 200. In the figure, the sensor 200 is a sensor 200 associated with an attachment position 20 selected based on an operation to be monitored, from among prepared sensors 200-1 to 200-11. The sensor 200 is assumed to have been paired with the operating state monitoring device 3 in advance, and calibrated. The number of sensors 200 is not limited to one, and may be two or more.

[0062] The operation state monitoring device 3 includes an attachment direction detection unit 30, an acquisition unit 31, a control processing unit 32, a display unit 33, and a storage unit 34. The attachment direction detection unit 30, the acquisition unit 31, the control processing unit 32, the display unit 33, and the storage unit 34 have functions as attachment direction detection means, acquisition means, control processing means, display means, and storage means.

[0063] The attachment direction detection unit 30 detects the attachment direction of the sensor 200. As described above, the attachment direction of the sensor 200 may be the attachment direction of the sensor 200 relative to a direction that is predetermined according to the target site, or may be the attachment direction of the sensor 200 relative to the axial direction of the attachment unit 220 that is attached to the target site.

[0064] Specifically, the mounting direction detection unit 30 may detect the mounting direction of the sensor 200 based on the output of the sensor 200 when the sensor 200 is mounted. In this case, the mounting direction detection unit 30 may detect the mounting direction of the sensor 200 based on the Z S Based on the axis information and the angle information of the sensor 200 from the rest state in the calibration to the installation, Z S The mounting angle with respect to the axis is calculated. In this manner, the mounting direction detection unit 30 can detect the mounting direction of the sensor 200.

[0065] Also, for example, the mounting direction detection unit 30 may have a mounting direction detection sensor and a mounting direction detection mechanism separately arranged near each sensor 200. The mounting direction detection mechanism may be configured so that a current flows according to the angle between the measurement axis A of the sensor 200 and the reference direction D. The mounting direction detection sensor detects the current. As a result, the mounting direction is detected according to the magnitude of the detected current. Note that, when a mounting unit 220 such as a band is used to mount the sensor 200, the mounting direction detection sensor and the mounting direction detection mechanism may be arranged in the mounting unit 220. Also, the mounting direction detection sensor and the mounting direction detection mechanism may be included in the measuring instrument 2. The mounting direction detection unit 30 may acquire information on the mounting direction based on the output from the mounting direction detection sensor.

[0066] Also, for example, the mounting direction detection unit 30 may detect the mounting direction of the sensor 200 based on a captured image of the attached sensor 200. For example, the mounting direction detection unit 30 may have a mounting direction detection camera disposed in front, behind, or above the subject P. The mounting direction detection unit 30 may detect the mounting direction of the sensor 200 by capturing an image of the sensor 200 and performing image processing such as pattern matching on the captured image. The mounting direction detection camera may be included in the measuring instrument 2, and the mounting direction detection unit 30 may acquire an image from the mounting direction detection camera and acquire information on the mounting direction based on the image.

[0067] Furthermore, in the case where the mounting direction of the sensor 200 can be adjusted by a knob or the like linked to the connector, the mounting direction detection unit 30 may detect the mounting direction based on the amount of movement of the knob.

[0068] In this embodiment, the mounting orientation detection unit 30 detects the mounting orientation of the sensor 200 in the initial, that is, stationary state immediately before measurement. Then, the mounting orientation detection unit 30 supplies information on the detected mounting orientation to the control processing unit 32.

[0069] The acquisition unit 31 acquires sensing information of the sensor 200 attached to the target site. In this embodiment, the acquisition unit 31 receives and acquires the sensing information from the sensor 200. However, this is not limited to the above, and the acquisition unit 31 may indirectly acquire the sensing information from an external computer (not shown) that holds the sensing information. The acquisition unit 31 supplies the acquired sensing information to the control processing unit 32.

[0070] The control processing unit 32 controls the sensor 200 and each component of the operation state monitoring device 3. The control processing unit 32 also executes tagging processing to associate the attachment direction of the sensor 200 with sensing-related information in that attachment direction. Then, the control processing unit 32 outputs the sensing-related information after the tagging processing to an output unit such as the display unit 33 in association with the attachment direction of the sensor 200. The control processing unit 32 may also store the sensing-related information after the tagging processing in the storage unit 34.

[0071] Furthermore, the control processing unit 32 may output the sensing-related information by using an algorithm that has been machine-learned using the attachment direction and the sensing-related information as learning data. Specifically, the control processing unit 32, for example, causes an algorithm to machine-learn the attachment direction and the sensing-related information linked to the attachment direction as learning data in advance. Then, the control processing unit 32 may output sensing-related information that is different from the input sensing-related information based on the input attachment direction or the input sensing-related information by using the algorithm.

[0072] The display unit 33 is an example of an output unit, and is a display that displays the sensing-related information supplied from the control processing unit 32. In this embodiment, the display unit 33 may be a touch panel configured together with an input unit (not shown). Note that instead of or in addition to the display unit 33, the output unit may include an audio output unit that outputs the sensing-related information by voice, a data output unit that outputs the sensing-related information in a predetermined data format, a transmission unit that transmits the sensing-related information to an external server, etc.

[0073] The storage unit 34 includes a storage medium that stores information necessary for various processes of the operation state monitoring device 3. The storage unit 34 may store the sensing-related information after the tagging process, but this is not essential when the output unit includes a transmission unit.

[0074] Next, an operation state monitoring method according to the first embodiment will be described. Fig. 11 is a flow chart illustrating an operation state monitoring method using the operation state monitoring system 1 according to the first embodiment. Fig. 12 is a diagram illustrating a display screen of the display unit 33 before measurement starts in the operation state monitoring system 1 according to the first embodiment. Fig. 13 is a diagram illustrating a display screen of the display unit 33 at the end of measurement in the operation state monitoring system 1 according to the first embodiment.

[0075] 11 starts when a monitoring target action is selected by a user, an attachment position 20 is determined based on the monitoring target action, and the sensor 200 is attached to the attachment position 20 corresponding to the monitoring target action. Note that in the following example, the control processing unit 32 handles the sensing information as sensing-related information.

[0076] First, as shown in step S11, the attachment direction detection unit 30 in the motion state monitoring device 3 detects the attachment direction of the sensor 200 in response to the subject P and the sensor 200 being stationary.

[0077] Next, as shown in step S12, the control processing unit 32 initializes the output value of the sensor 200. Specifically, the control processing unit 32 corrects the output value of the sensor 200 in the stationary state immediately before measurement to 0. Even if the sensor 200 is calibrated, it is not possible to make the output error such as drift error 0, and the error may increase with the elapsed time. Therefore, this step can minimize the output error from the start to the end of the measurement. However, if the output error is minor, this step may be omitted.

[0078] Next, as shown in step S13, the control processing unit 32 determines whether or not to start measurement by the sensor 200. If the control processing unit 32 decides to start measurement by the sensor 200 in step S13 (Yes), the process proceeds to step S14. On the other hand, if the control processing unit 32 decides not to start measurement by the sensor 200 in step S13 (No), the process shown in step S13 is repeated.

[0079] 12, a display image 300(1) before the start of measurement is displayed by the display unit 33. The display image 300(1) includes a plurality of display areas 302, 304, 305, 306, 309, and 310.

[0080] Display area 302 displays icon images representing a plurality of mounting positions 20 that are candidates for mounting sensor 200. In display area 302, mounting positions 20 (positions indicated by "1", "2", "6", and "7" in the figure) that correspond to the selected measurement operation may be highlighted. This allows the user to easily visually identify mounting positions 20, thereby enabling the exercise test to be carried out smoothly.

[0081] Here, when the user clicks on an icon image representing the mounting position 20 in the display area 302, an image (not shown) is displayed indicating the mounting direction of the sensor 200 associated with that mounting position 20. Therefore, the user can easily understand the mounting direction of each sensor 200 via this image.

[0082] In the display area 304, the rotation angles of the sensors 200-1, 200-2, ..., 200-11 linked to the mounting positions 20-1, 20-2, ..., 20-11 are displayed two-dimensionally. The rotation angles displayed here change dynamically in response to the movement of the sensor 200 linked to the movement of the subject P. Therefore, the user can identify the sensor 200 whose power is turned off or that is not operating normally via the display area 304 before starting measurement.

[0083] Alternatively, the mounting directions of the sensors 200-1, 200-2, ..., 200-11 associated with the mounting positions 20-1, 20-2, ..., 20-11 may be visually displayed in the display region 304. Thus, the user can intuitively grasp the mounting directions of the sensors 200 via the display region 304.

[0084] In the case where a plurality of sensors 200 are used in an exercise test, an input operation button for collectively calibrating the plurality of sensors 200 is displayed in the display area 305. This allows the user to easily request calibration for each of the plurality of sensors 200 via the display area 305.

[0085] Display area 306 displays an input operation button for starting an exercise test, i.e., for starting measurement by sensor 200. This allows the user to easily request, via display area 306, for measurement by sensor 200 to be started.

[0086] Sensing related information for each sensor 200 used is displayed in a display area 309. Before the start of measurement, the sensing related information is not yet displayed. A motion status indicator of the target part for each monitored motion that has been performed is displayed in a display area 310. Before the start of measurement, the motion status indicator of the target part is not yet displayed.

[0087] Then, as shown in step S14 in FIG. 11, the control processing unit 32 acquires sensing information from the sensor 200 via the acquisition unit 31.

[0088] Next, as shown in step S15, the control processing unit 32 uses the sensing information as sensing related information and adds information on the mounting direction of the sensor 200 to the sensing related information as a tag. This makes it possible to associate the mounting direction with the sensing related information.

[0089] Next, as shown in step S16, the control processing unit 32 supplies the sensing associated information after the tagging processing to the display unit 33 to display it.

[0090] Next, as shown in step S17, the control processing unit 32 determines whether or not to end the measurement by the sensor 200. If the control processing unit 32 ends the measurement in step S17 (Yes), the process ends. On the other hand, if the control processing unit 32 does not end the measurement in step S17 (No), the process returns to step S14.

[0091] In the above example, the operational state monitoring device 3 waits for the process of step S12 and determines in step S13 whether or not to start measurement by the sensor 200. However, instead of this, the operational state monitoring device 3 may execute the process of step S12 in response to determining to start measurement by the sensor 200 after the process of step S11 (Yes in step S13). In this case, the control processing unit 32 may proceed to the process of step S14 after executing the process of step S12 or in parallel with the execution of the process. Furthermore, if the operational state monitoring device 3 does not want to start measurement by the sensor 200 (No in step S13), it may repeat the process shown in step S13.

[0092] In the above example, the operation state monitoring device 3 uses the sensing information as the sensing related information, but instead of or in addition to this, it may use sensing information that has been subjected to various conversion processes. This conversion process may include conversion from quaternion information to rotation angles around the X-axis, Y-axis, and Z-axis. S The rotation angle around the axis indicates the roll angle, and the Y S The rotation angle around the axis indicates the pitch angle, and Z SThe rotation angle around the axis indicates a yaw angle. The control processing unit 32 uses the quaternion information to calculate the rotation angles around the X-axis, Y-axis, and Z-axis of the sensor coordinate system, and converts them into a yaw angle, a roll angle, and a pitch angle. This conversion process may include graph normalization, standardization, or synthesis. In this case, instead of or in addition to step S15, the control processing unit 32 may add information on the mounting direction of the sensor 200 as a tag to the sensing information after the conversion process, and associate the mounting direction with the sensing information after the conversion process.

[0093] 13 shows a display image 300(2) at the end of measurement displayed by the display unit 33. Like the display image (1), the display image 300(2) includes a plurality of display areas 302, 304, 305, 306, 309, and 310. The display areas 302 and 304 of the display image 300(2) are similar to the display areas 302 and 304 of the display image 300(1) shown in FIG.

[0094] The mounting direction of each sensor 200 used may be displayed near an icon image representing the mounting position 20 in the display area 302, or may be displayed in response to the user clicking on the icon image. This allows the user to intuitively grasp the mounting direction of the sensor 200 used.

[0095] Display area 308 displays an input operation button for ending the exercise test, i.e., for stopping measurement by sensor 200. This allows the user to easily request, via display area 308, that measurement by sensor 200 be stopped.

[0096] The display area 309 displays sensing-related information for each sensor 200 used. Among the sensors 200-1, 200-2, 200-6, and 200-7 used, X based on the output of some of the sensors 200-1 and 200-6 is displayed. S ,Y S and Z SThe rotation angle around the axis is displayed in chronological order. Therefore, the display area 309, together with the display area 304, outputs sensing-related information associated with the mounting direction of the sensor 200 used by the above-mentioned display, allowing the user to associate the mounting conditions with the measurement results. This allows the user to distinguish and analyze, evaluate, or use the measurement results for each mounting condition.

[0097] The display area 310 displays the motion status index of the target part for each monitored motion that has been performed. The motion status index is an index that indicates the motion status of the target part when the monitored motion is performed. The control processing unit 32 calculates the motion status index of the target part based on the sensing-related information of the sensor 200. For example, when the monitored motion is "right elbow flexion and extension", the sensing-related information of the sensors 200-1 and 200-2 at the attachment positions 20-1 and 20-2 is used. In this case, the control processing unit 32 may calculate the motion status index based on the difference between the sensing-related information of the sensors 200-1 and 200-2. Specifically, the control processing unit 32 calculates a three-dimensional rotation angle as the motion status index based on the difference between the quaternion information of the sensors 200-1 and 200-2. In this case, the rotation angle is calculated in the order of Z axis → Y axis → X axis, and the X axis is calculated. S ,Y S and Z S The rotation angle is converted into a rotation angle around the axis. The calculation order of the rotation angle may be determined in advance according to the monitored action. In the display area 310, the time-series action status indicators of some of the monitored actions that have been performed are displayed.

[0098] According to this embodiment, in the measuring device 2, the holding unit 210 includes a bag 211 formed of an elastic member. The bag 211 has an insertion opening extending in one direction. When the holding unit 210 holding the sensor 200 in the bag 211 is attached to a target site, the holding unit 210 can be attached to the target site with the bag 211 stretched in one direction. This can reduce the attachment time of the sensor 200 and prevent the sensor 200 from falling off.

[0099] Bag 211 may include a lid 213 that covers insertion opening 212. This can further prevent sensor 200 from falling off. Holding part 210 may be attached to a target site via mounting part 220 that extends in one direction. This can fix the mounting direction of sensor 200.

[0100] The operational state monitoring system 1 outputs the measurement results in association with the mounting direction of the sensor 200. Therefore, the operational state monitoring system 1 can appropriately manage the measurement results according to the mounting direction of the sensor 200, improving convenience.

[0101] In addition, the motion status monitoring system 1 automatically detects the initial mounting direction of the sensor 200. This allows the mounting direction at the time of mounting to be appropriately set according to the preference of the subject P or the staff, making it easy to correlate with the measurement results.

[0102] <Embodiment 2> Next, a description will be given of embodiment 2. This embodiment is characterized in that a calculation process is performed on the measurement results according to the installation direction. The configuration and functions of the operation status monitoring system 1 according to embodiment 2 are similar to those of the operation status monitoring system 1 according to embodiment 1, and therefore a description thereof will be omitted.

[0103] The control processing unit 32 of the motion status monitoring system 1 executes arithmetic processing on the sensing information or sensing-related information according to the attachment direction. The arithmetic processing here may be arithmetic processing that cancels out or suppresses the influence of the attachment direction when the sensing-related information changes depending on the attachment direction, for example, even when the target part is moved in the same way during the same monitored motion. In particular, the control processing unit 32 uses the quaternion information to calculate the rotation angles around the X-axis, Y-axis, and Z-axis, and calculates the rotation angle around the X-axis, Y-axis, and Z-axis. S Axis, Y S Axis and Z SWhen converting to a rotation angle around an axis, it is necessary to convert four-dimensional vector data into three-dimensional data. In this calculation process, there is a problem that the obtained rotation angles differ depending on the order in which the rotation angles around each axis are calculated, making it impossible to correctly compare the results. In order to suppress such an effect, it is preferable to determine the calculation order of the rotation angles in advance. Here, since the preferable calculation order of the rotation angles depends on the mounting direction of the sensor 200, it is effective to determine the calculation order according to the mounting direction of the sensor 200.

[0104] Therefore, in the operation state monitoring system 1, the control processing unit 32 executes the arithmetic processing using the arithmetic processing table 320 that defines the arithmetic processing mode according to the mounting direction. Then, the control processing unit 32 causes the output unit to output the arithmetic processing result in association with the initial mounting direction of the sensor 200.

[0105] FIG. 14 is a diagram illustrating a data structure of the arithmetic processing table 320 used by the control processing unit 32 in the operation state monitoring system 1 according to the second embodiment. As shown in FIG. 14, the arithmetic processing table 320 is a table that associates the mounting angle θ1 with the calculation order of the rotation angle. For example, the arithmetic processing table 320 specifies that when the mounting angle θ1 is 0°, the rotation angle around each axis is calculated in the order of the X axis → the Z axis → the Y axis. Also, the arithmetic processing table 320 specifies that when the mounting angle θ1 is 90°, the rotation angle around each axis is calculated in the order of the Y axis → the Z axis → the X axis. The control processing unit 32 can easily execute a preferable arithmetic processing according to the mounting direction by referring to the arithmetic processing table 320.

[0106] In addition, the calculation processing table 320 determines the order of calculation of the rotation angle depending on the mounting direction of the sensor 200, but instead, the order of calculation of the rotation angle may be determined depending on the mounting direction and the target part or the monitored action.

[0107] Furthermore, the calculation processing table 320 may include calculation parameters used in the calculation processing instead of or in addition to the calculation order of the rotation angles. In this case, the calculation parameters may be constants determined according to the mounting angle θ1, or may include a predetermined function with the mounting direction θ1 as a variable.

[0108] In this way, according to the second embodiment, the control processing unit 32 can easily compare and use a plurality of measurement results regardless of the mounting direction of the sensor 200. Note that the second embodiment also provides the same effects as the first embodiment.

[0109] <Embodiment 3> Next, an operation state monitoring system according to a third embodiment will be described. This embodiment is characterized in that the attachment direction of the sensor 200 is detected not only initially but also during the operation of the monitored object. The configuration of the operation state monitoring system 1 according to the third embodiment is similar to that of the operation state monitoring systems of the first and second embodiments, and therefore a description thereof will be omitted. However, in the operation state monitoring system 1 according to the third embodiment, the attachment direction detection unit 30 detects the attachment direction not only initially but also during measurement of the sensor 200. Then, in the operation state monitoring system 1, the control processing unit 32 outputs sensing related information after the event in response to detecting an event in which the attachment direction changes during measurement of the sensor 200, in association with the attachment direction after the event.

[0110] Fig. 15 is a flow chart illustrating an operation status monitoring method using the operation status monitoring system 1 according to embodiment 3. Each step shown in Fig. 15 includes steps S20 to S21 in addition to the steps shown in Fig. 11. Note that steps similar to those shown in Fig. 11 are denoted by the same reference numerals and description thereof will be omitted.

[0111] In response to the display unit 33 displaying the sensing related information in step S16, the attachment direction detection unit 30 determines whether or not an attachment direction change event has been detected, as shown in step S20. In step S20, for example, when the subject P intentionally changes the attachment direction during the monitored action, or when the attachment direction of the sensor 200 unintentionally changes during the monitored action, the attachment direction change event is detected.

[0112] Specifically, the mounting direction detection unit 30 may determine that a mounting direction change event has been detected when the difference between the mounting directions before and after the change, i.e., the difference in the mounting angle θ1, is equal to or greater than a predetermined threshold value. The detection of the mounting direction at this time may be performed using a method similar to that used for detecting the initial mounting direction.

[0113] Alternatively, the attachment direction detection unit 30 may detect an attachment direction change event from a time-dependent change in the sensing-related information. For example, the attachment direction detection unit 30 may determine that an attachment direction change event has been detected when a discontinuous change of a predetermined threshold or more is detected in the time-series information of the sensing-related information. Whether or not a change is discontinuous may be determined based on whether or not the difference between the sensing-related information before and after the change is greater than a predicted value by a predetermined threshold or more.

[0114] In step S20, if the mounting orientation detection unit 30 determines that an event of a change in the mounting orientation has been detected (Yes), the process proceeds to step S21. On the other hand, in step S20, if the mounting orientation detection unit 30 determines that an event of a change in the mounting orientation has not been detected (No), the process proceeds to step S17.

[0115] In step S21, the control processing unit 32 updates the attachment direction of the sensor 200 associated with the sensing associated information to the attachment direction after the change event. Then, the control processing unit 32 advances the process to step S17.

[0116] Thus, according to the third embodiment, the operation state monitoring system 1 detects a change in the mounting direction of the sensor 200 during measurement, and outputs the changed mounting direction in association with the sensing related information. Therefore, even if the mounting direction is changed intentionally or unintentionally during the monitored operation, the operation state monitoring system 1 can manage the subsequent measurement results in association with the changed mounting direction. Note that the third embodiment also provides the same effects as the first and second embodiments.

[0117] The present disclosure is not limited to the above-described embodiment, and may be modified as appropriate without departing from the spirit and scope of the present disclosure. For example, other embodiments are as follows.

[0118] <Another embodiment 1> In the first embodiment, the control processing unit 32 in the operation state monitoring system 1 outputs sensing-related information in association with the attachment direction of the sensor 200 relative to the reference direction D. However, the control processing unit 32 may convert the relative attachment direction detected by the user into an absolute direction, and output the sensing-related information in association with the absolute direction instead of or in addition to the attachment direction.

[0119] For example, the control processing unit 32 may set the initial mounting direction θ1 of the detected sensor 200 to the initial reference direction D and Z shown in FIG. S By adding the angle θ0 between the axes, the initial measurement axes A and Z S The attachment angle θ1' between the sensor 200 and the axis can be calculated. Then, the control processing unit 32 outputs the initial attachment angle θ1' as information indicating the initial absolute direction of the sensor 200 in association with the sensing related information. The absolute direction of the sensor 200 during measurement can be calculated based on the initial absolute direction of the sensor 200, the rotation angle of the sensor 200 which is the measurement result of the sensor 200, and the amount of change in the attachment angle during measurement. In this way, the user can analyze the measurement results taking into account more detailed measurement conditions, improving the analysis accuracy.

[0120] <Another embodiment 2> In the second embodiment, the control processing unit 32 in the operation state monitoring system 1 executes arithmetic processing on the sensing information or sensing-related information according to the mounting direction. However, instead of or in addition to this, the control processing unit 32 may execute arithmetic processing on the sensing information or sensing-related information according to the absolute direction of the sensor 200 described above. In this case, the arithmetic processing table 320 may associate the mounting angle θ1' described in the second alternative embodiment with the arithmetic parameters of the arithmetic processing determined according to the mounting angle θ1'. This makes it easy for the control processing unit 32 to compare and use the measurement results regardless of the orientation of the sensor 200.

[0121] In the above embodiment, the present disclosure has been described as a hardware configuration, but the present disclosure is not limited to this. The present disclosure can also be realized by having a processor execute a computer program, for example, an operation status monitoring program, to perform each process related to the operation status monitoring method.

[0122] In the above-described embodiment, the computer is configured as a computer system including a personal computer, a word processor, etc. However, the present invention is not limited to this, and the computer can also be configured as a LAN server, a computer (personal computer) communication host, a computer system connected to the Internet, etc. It is also possible to distribute functions to each device on the network and configure a computer using the entire network.

[0123] FIG. 16 is a schematic diagram illustrating an example of an operation state monitoring device 3 including a computer according to the embodiment described above. As shown in FIG. 16, the operation state monitoring device 3 may further include a processor PRC, a memory MMR, a storage device STR, and a user interface UI. The storage device STR stores the processes executed by each component of the operation state monitoring device 3 as a program. The processor PRC also loads the program from the storage device STR into the memory MMR and executes the program. In this way, the processor PRC realizes the functions of each component in the operation state monitoring device 3. The user interface UI may include input devices such as a keyboard, a mouse, and an imaging device, and output devices such as a display, a printer, and a speaker.

[0124] Each of the components of the operation state monitoring device 3 may be realized by dedicated hardware. Also, some or all of the components may be realized by a general-purpose or dedicated circuit, a processor PRC, or a combination of these. These may be configured by a single chip, or may be configured by multiple chips connected via a bus. Some or all of the components may be realized by a combination of the above-mentioned circuits, etc., and a program. Also, a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), an FPGA (Field-programmable Gate Array), a quantum processor (quantum computer control chip), etc. may be used as the processor PRC.

[0125] Furthermore, when some or all of the components of the operation status monitoring device 3 are realized by a plurality of information processing devices, circuits, etc., the plurality of information processing devices, circuits, etc. may be centrally arranged or distributed. For example, the information processing devices, circuits, etc. may be realized in a form in which each is connected via a communication network NW by a client-server system, a cloud computing system, etc. Also, the functions of the operation status monitoring device 3 may be provided in a SaaS (Software as a Service) format.

[0126] The order of execution of each process in the apparatus and method shown in the claims, specification, and drawings is not specifically stated as "before," "prior to," etc., and may be realized in any order as long as the output of a previous process is not used in a subsequent process. Even if the operational flow in the claims, specification, and drawings is explained using "first," "next," etc. for convenience, it does not mean that it is essential to perform the process in this order. [Explanation of symbols]

[0127] 1 Operation status monitoring system 2, 2-1, 2-2, 2-6, 2-7 Measuring instruments 3. Operation status monitoring device 20, 20-1, 20-2, 20-3, 20-4, 20-5, 20-6 Installation position 20-7, 20-8, 20-9, 20-10, 20-11 Installation position 30 Installation direction detection unit 31 Acquisition Department 32 Control processing section 33 Display section 34 Storage section 200, 200-1, 200-2, 200-6, 200-7 Sensors 210 Holding part 211 Bags 212 Insertion port 213 Lid 214 Storage area 215 holes 216 Light-emitting part 217 Transparent part 220 Mounting Part 225 holes 300(1), 300(2) Display image 302, 304, 305, 306, 308, 309, 310 display area 320 Calculation Table MMR Memory PRC Processor STR storage UI User Interface P Subject

Claims

1. A motion status monitoring system for monitoring a motion status of a target part of a subject's body, comprising: A measuring instrument for measuring the operating condition; an operation status monitor for monitoring the operation status; Equipped with The measuring instrument is A sensor for detecting the operating state; A holder for holding the sensor; having The holding portion includes a bag formed of an elastic material, the bag has an insertion opening extending in one direction and holds the sensor therein inserted through the insertion opening; When the holding portion holding the sensor in the bag is attached to the target site, the holding portion is attached to the target site so that the bag stretches in the one direction. Operational status monitoring system.

2. The bag comprises: Materials include cloth, A cover for covering the insertion port is included. The operating condition monitoring system according to claim 1 .

3. The measuring device further includes a mounting portion that is mounted on the target site, The holding portion is attached to the target site via the mounting portion extending in one direction, The operating condition monitoring system according to claim 1 .

4. The holding portion and the mounting portion have holes formed in portions corresponding to predetermined positions of the target site, The body side portion of the attachment part is black. The operating condition monitoring system according to claim 3 .

5. The holding portion is attached to the mounting portion by a hook-and-loop fastener. The operating condition monitoring system according to claim 3 .

6. The holding portion includes a transmission portion that transmits light emitted from a light emitting portion provided in the sensor. The operating condition monitoring system according to claim 1 .

7. The operation status monitoring device includes: an acquisition unit that acquires sensing information of the sensor attached to the target site; an attachment direction detection unit for detecting an attachment direction of the sensor; a control processing unit that outputs sensing-related information related to the sensing information in association with the mounting direction of the sensor; having The operating condition monitoring system according to claim 1 .

8. The mounting direction of the sensor is a mounting direction of the sensor with respect to a direction predetermined according to the target site. The operating condition monitoring system according to claim 7.

9. The mounting direction of the sensor is a mounting direction of the sensor with respect to an axial direction of a mounting part attached to the target site. The operating condition monitoring system according to claim 7.

10. the control processing unit, in response to detecting an event in which the mounting orientation changes during measurement by the sensor, outputs the sensing-related information after the event in association with the mounting orientation after the event. The operating condition monitoring system according to claim 7.

11. the control processing unit executes a calculation process on the sensing information or the sensing-related information according to the mounting direction, and outputs a result of the calculation process in association with the mounting direction of the sensor. The operating condition monitoring system according to claim 7.

12. A motion status monitoring method for monitoring a motion status of a target part of a body of a subject using a motion status monitoring system, comprising: The operation status monitoring system includes: A measuring instrument for measuring the operating condition; an operation status monitor for monitoring the operation status; Equipped with The measuring instrument is A sensor for detecting the operating state; A holder for holding the sensor; having The holding portion includes a bag formed of an elastic material, the bag has an insertion opening extending in one direction and holds the sensor therein inserted through the insertion opening; When the holding unit holding the sensor in the bag is attached to the target site, the holding unit is attached to the target site so that the bag stretches in the one direction, acquiring sensing information from a sensor attached to the target site; Detecting an installation orientation of the sensor; outputting sensing-related information related to the sensing information in association with the mounting direction of the sensor; An operating condition monitoring method comprising:

13. A motion status monitoring program for causing a computer included in a motion status monitoring system to monitor a motion status of a target part of a subject's body, The operation status monitoring system includes: A measuring instrument for measuring the operating condition; an operation status monitor for monitoring the operation status; Equipped with The measuring instrument is A sensor for detecting the operating state; A holder for holding the sensor; having The holding portion includes a bag formed of an elastic material, the bag has an insertion opening extending in one direction and holds the sensor therein inserted through the insertion opening; When the holding unit holding the sensor in the bag is attached to the target site, the holding unit is attached to the target site so that the bag stretches in the one direction, acquiring sensing information from a sensor attached to the target site; detecting an attachment direction of the sensor; outputting sensing-related information related to the sensing information in association with the mounting direction of the sensor; An operating status monitoring program that causes the computer to execute the above.

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