Measuring Device, Determination Method, and Recording Medium

Abstract

The present invention provides a measurement device, a determination method, and a recording medium, which can prevent continuous measurement in a state where the device is installed inside out. The measurement device (1) includes a processing device (500). The processing device (500) includes a speed acquisition unit (502), a coefficient calculation unit (503), and a determination unit (504). The speed acquisition unit (502) respectively acquires first speed data, which is speed data in a first direction, and second speed data, which is speed data in a second direction orthogonal to the first direction, based on the acceleration acquired by the acceleration sensor (201). The coefficient calculation unit (503) calculates a first coefficient based on the first speed data and the second speed data acquired by the speed acquisition unit (502). The determination unit (504) determines whether the measurement device (1) is reversely equipped based on the first coefficient calculated by the coefficient calculation unit (503).

Description

[0001] This invention claims priority based on Japanese Patent Application No. 2020-165107 (filing date: September 30, 2020), and its content is incorporated herein by reference. Technical Field

[0002] This invention relates to a measurement device, a determination method, and a recording medium. Background Art

[0003] In International Publication No. 2016 / 024565, a motion capture device is described. The motion capture device is installed on a periodically moving part and includes a housing provided with a three-dimensional acceleration sensor, an arithmetic processing unit, etc. Summary of the Invention

[0004] The motion capture device described in Comparative Document 1 is used by being installed on the user's waist. In such a measurement device that is installed on the user and analyzes the user's motion, when it is installed on the user's body with the inside and outside reversed, there are problems such as a decrease in the accuracy of data and its analysis results or the calculation of incorrect analysis results.

[0005] This invention has been completed in view of the above problems, and its object is to provide a measurement device, a determination method, and a recording medium that can prevent continuous measurement in a state where the device is installed with the inside and outside reversed.

[0006] One aspect of this invention provides a measurement device including a processing device, characterized in that the processing device includes: a speed acquisition unit that respectively acquires first speed data, which is speed data in a first direction, and second speed data, which is speed data in a second direction orthogonal to the first direction, based on the acceleration acquired by an acceleration sensor; a coefficient calculation unit that calculates a first coefficient based on the first speed data and the second speed data acquired by the speed acquisition unit; and a determination unit that determines whether the measurement device is properly equipped based on the first coefficient calculated by the coefficient calculation unit.

[0007] Another aspect of this invention provides a measurement device including a processing device, characterized in that the processing device includes: a speed acquisition unit that acquires speed data, which is speed data in a certain direction, based on the acceleration acquired by an acceleration sensor, and acquires angular velocity data from an angular velocity sensor that measures angular velocity; a coefficient calculation unit that calculates a coefficient based on the speed data and the angular velocity data acquired by the speed acquisition unit; and a determination unit that determines whether the measurement device is properly equipped based on the coefficient calculated by the coefficient calculation unit.

[0008] Another aspect of the present invention provides a determination method, characterized in that, based on the acceleration obtained by an acceleration sensor, the data of the velocity in the first direction, i.e., the first velocity data, and the data of the velocity in the second direction orthogonal to the first direction, i.e., the second velocity data, are respectively obtained, a first coefficient is calculated based on the obtained first velocity data and the second velocity data, and it is determined whether the measuring device is normally equipped based on the calculated first coefficient.

[0009] Another aspect of the present invention provides a recording medium, characterized in that a program is recorded, and the program causes a computer to execute: based on the acceleration obtained by an acceleration sensor, the data of the velocity in the first direction, i.e., the first velocity data, and the data of the velocity in the second direction orthogonal to the first direction, i.e., the second velocity data, are respectively obtained, a first coefficient is calculated based on the obtained first velocity data and the second velocity data, and it is determined whether the measuring device is normally equipped based on the calculated first coefficient.

[0010] Advantages of the Invention

[0011] According to the present invention, it is possible to provide a measuring device, a determination method, and a recording medium that can prevent continuous measurement in a state where the device is installed inside out. Brief Description of the Drawings

[0012] Figure 1A 、 Figure 1B shows the appearance of the measuring device according to Embodiment 1, Figure 1A is a front view, Figure 1B is a side view.

[0013] Figure 2 is a diagram showing a state where the measuring device according to Embodiment 1 is equipped on a user.

[0014] Figure 3 is a block diagram showing the structure of the measuring device according to Embodiment 1.

[0015] Figure 4 is a flowchart of the determination process executed by the processing device of the measuring device according to Embodiment 1.

[0016] Figure 5 is a diagram showing the velocity in the Y direction and the velocity in the Z direction in the case where the user is equipped inside out and running in Embodiment 1.

[0017] Figure 6 is a diagram showing the velocity in the Y direction and the velocity in the Z direction in the case where the user is normally equipped and running in Embodiment 1.

[0018] Figure 7 is a block diagram showing the structure of the measuring device according to Embodiment 2.

[0019] Figure 8 It is a flowchart of the determination process executed by the processing device of the measurement device according to Embodiment 2.

[0020] Figure 9 It is a graph showing the velocity in the X direction and the angular velocity around the Z axis when the user is equipped and running with the inside and outside reversed in Embodiment 2.

[0021] Figure 10 It is a graph showing the velocity in the X direction and the angular velocity around the Z axis when the user is normally equipped and running in Embodiment 2. Detailed Embodiment

[0022] (Embodiment 1)

[0023] The measurement device 1 according to Embodiment 1 will be described with reference to the accompanying drawings. In addition, the same or corresponding parts in the drawings are denoted by the same reference numerals. The measurement device 1 according to Embodiment 1 is a measurement device that is equipped on a user and measures information related to the user's movement.

[0024] Figure 1A 、 Figure 1B shows the appearance of the measurement device 1, Figure 1A is the front view, Figure 1B is the side view. As Figure 1A 、 Figure 1B shown, the measurement device 1 includes a housing 100 and a clip 101.

[0025] The housing 100 is a housing in which a sensor 200, a storage device 300, a communication device 400, and a processing device 500 described later are arranged inside. The housing 100 can include, for example, metal, resin, but is not limited thereto.

[0026] The clip 101 is connected to one surface of the housing 100. The clip 101 applies a force toward the housing 100 and fixes an object by clamping it between the housing 100 and the clip 101. The clip 101 can include, for example, metal, resin, and also includes an elastic body that applies a force to the clip 101, but is not limited thereto.

[0027] Figure 2 is a diagram showing the state in which the measurement device 1 is equipped on the user. As Figure 2 shown, the measurement device 1 is equipped on the dorsal side of the user's waist. The measurement device 1 is fixed to the user by clamping, for example, pants or a belt between the housing 100 and the clip 101. The measurement device 1 is equipped in such a manner that the surface opposite to the surface with the clip 101 contacts the body. As Figure 2 shown, the positive direction of the Y axis is set as the user's traveling direction, and the positive direction of the Z axis is set as vertically upward.

[0028] Figure 3 is a block diagram showing the structure of the measurement device 1 according to Embodiment 1. As Figure 3 shown, the measurement device 1 includes a sensor 200, a storage device 300, a communication device 400, and a processing device 500.

[0029] The sensor 200 includes an acceleration sensor 201 that measures acceleration. The acceleration sensor 201 can include a semiconductor acceleration sensor, a piezoelectric acceleration sensor, but is not limited thereto.

[0030] The storage device 300 stores programs executed by the processing device 500, calculated data, and data measured by the sensor 200. The storage device 300 can include a RAM (Random Access Memory), a flash memory, a ROM (Read Only Memory), an EPROM (Erasable Programmable ROM), or an EEPROM (Electrically Erasable Programmable ROM), but is not limited thereto.

[0031] The communication device 400 is a communication interface that exchanges signals with the outside of the measurement device 1. The communication device 400 can include, for example, a wireless communication interface or a wired communication interface, but is not limited thereto.

[0032] The processing device 500 includes a state determination unit 501, a speed acquisition unit 502, a coefficient calculation unit 503, and a determination unit 504. The processing device 500 includes, for example, a CPU (Central Processing Unit), but is not limited thereto.

[0033] The state determination unit 501 acquires acceleration data in the X, Y, and Z directions from the acceleration sensor 201, and determines whether the user equipped with the measurement device 1 is in a running state or other states based on the acceleration data. The running state is called the running state. The state determination unit 501 determines, for example, using the method of support vector machines, but is not limited thereto.

[0034] The speed acquisition unit 502 acquires acceleration data in the Y and Z directions from the acceleration sensor 201, and integrates the values of the acceleration data to acquire speed data in the Y and Z directions.

[0035] The coefficient calculation unit 503 acquires the speed data in the Y direction and the speed data in the Z direction acquired by the speed acquisition unit 502, and calculates the correlation coefficient (first coefficient) between the acquired speed data in the Y direction and the speed data in the Z direction.

[0036] When the absolute value of the calculated correlation coefficient is greater than or equal to a threshold value (second threshold value), the coefficient calculation unit 503 adds the calculated correlation coefficient to the determination counter and stores it in the storage device 300. When the absolute value of the calculated correlation coefficient is less than the threshold value, the addition of the correlation coefficient to the determination counter is not performed.

[0037] The determination unit 504 obtains the value of the determination counter from the storage device 300. When the value of the determination counter is greater than a positive threshold value (first threshold value), it is determined that the measurement device 1 is equipped inside out. The determination unit 504 determines that the measurement device 1 is normally equipped when the value of the determination counter is less than a negative threshold value.

[0038] At the start of the determination process, the determination unit 504 resets the value of the determination counter stored in the storage device 300.

[0039] Figure 4 It is a flowchart of the determination process executed by the processing device 500 of the measurement device 1 according to Embodiment 1. Refer to Figure 4 the flowchart of

[0040] When the determination process starts, the determination unit 504 resets the value of the determination counter stored in the storage device 300 (step S100).

[0041] If the value of the determination counter is reset, the state determination unit 501 obtains acceleration data in the X, Y, and Z directions from the acceleration sensor 201, and determines whether the user wearing the measurement device 1 is in a running state based on the acceleration data (step S101). When it is determined that the user is not in a running state (step S101: No), the determination process ends.

[0042] When it is determined that the user is in a running state (step S101: Yes), the speed acquisition unit 502 obtains acceleration data in the Y and Z directions from the acceleration sensor 201, and integrates the values of the acceleration data to obtain speed data in the Y and Z directions (step S102).

[0043] When the speed acquisition unit 502 obtains the speed data, the coefficient calculation unit 503 obtains the speed data in the Y direction and the speed data in the Z direction obtained by the speed acquisition unit 502, and calculates the correlation coefficient between the obtained speed data in the Y direction and the speed data in the Z direction (step S103).

[0044] When the coefficient calculation unit 503 calculates the correlation coefficient, it determines whether the absolute value of the calculated correlation coefficient is greater than or equal to the threshold value (step S104). When it is determined that the absolute value is not greater than or equal to the threshold value (step S104: No), the process returns to step S102.

[0045] When it is determined that it is above the threshold (step S104: Yes), the calculated correlation coefficient is added to the determination counter and stored in the storage device 300 (step S105).

[0046] When the coefficient calculation unit 503 adds the correlation coefficient to the determination counter, the determination unit 504 obtains the value of the determination counter from the storage device 300 and determines whether the value of the determination counter is greater than a positive threshold (step S106).

[0047] When it is determined that the value of the determination counter is greater than the positive threshold (step S106: Yes), it is determined that the measuring device 1 is equipped inside out (step S107), and the determination process ends.

[0048] When it is determined that the value of the determination counter is equal to or less than the positive threshold (step S106: No), the determination unit 504 obtains the value of the determination counter from the storage device 300 and determines whether the value of the determination counter is less than a negative threshold (step S108).

[0049] When it is determined that the value of the determination counter is less than the negative threshold (step S108: Yes), it is determined that the measuring device 1 is normally equipped (step S109), and the determination process ends.

[0050] When it is determined that the value of the determination counter is equal to or greater than the negative threshold (step S108: No), the process returns to step S102.

[0051] By having the above structure and performing the determination process, the measuring device 1 according to the first embodiment can prevent continuous measurement in a state where the device is installed inside out. The measuring device 1 can prevent a decrease in the accuracy of the measured data and its analysis result or the calculation of an incorrect analysis result due to being installed inside out by determining the state of being installed inside out.

[0052] The measuring device 1 can use only data of a sufficient size for the inside-out determination in the inside-out determination and improve the accuracy of the inside-out determination by causing the coefficient calculation unit 503 to determine whether the absolute value of the correlation coefficient is equal to or greater than the threshold, and adding it to the determination counter when it is equal to or greater than the threshold.

[0053] When the determination unit 504 determines that the value of the determination counter is greater than the positive threshold, the measuring device 1 determines that the measuring device 1 is equipped inside out. Thus, it is possible to prevent an incorrect determination from being made by determining inside and outside when a sufficient amount of data has been collected in the inside-out determination.

[0054] Figure 5 It is a diagram showing the velocity in the Y direction and the velocity in the Z direction when the user is equipped inside out and running. AsFigure 5 As shown, when the measurement device 1 is worn inside-out and the user runs, there is a tendency for the velocity in the Y direction (velY: solid line) and the velocity in the Z direction (velZ: dotted line) to be in phase. When calculating the correlation coefficient in this state, a positive correlation coefficient is obtained. Since the user's movement has the above tendency, when the determination unit 504 of the measurement device 1 determines that the value of the determination counter is greater than a positive threshold, it is determined that the measurement device 1 is worn inside-out, and thus the inside-out determination can be correctly performed.

[0055] Figure 6 is a graph showing the velocity in the Y direction and the velocity in the Z direction when the user wears the device normally and runs. As Figure 6 shown, when the user wears the measurement device 1 normally and runs, there is a tendency for the velocity in the Y direction (velY: solid line) and the velocity in the Z direction (velZ: dotted line) to be in opposite phases. If the correlation coefficient is calculated in this state, a negative correlation coefficient is obtained. Since the user's movement has the above tendency, when the determination unit 504 of the measurement device 1 determines that the value of the determination counter is less than a negative threshold, it is determined that the measurement device 1 is worn normally, and thus the inside-out determination can be correctly performed.

[0056] (Embodiment 2)

[0057] The measurement device 1 according to Embodiment 2 will be described with reference to the accompanying drawings. In addition, the same or corresponding parts in the drawings are denoted by the same reference numerals.

[0058] Figure 7 is a block diagram showing the structure of the measurement device 1 according to Embodiment 2. As Figure 7 shown, the sensor 200 of the measurement device 1 according to Embodiment 2 includes an angular velocity sensor 202.

[0059] The sensor 200 includes an angular velocity sensor 202 that measures angular velocity. The angular velocity sensor 202 can include a gyroscope sensor, but is not limited thereto.

[0060] The state determination unit 501 acquires acceleration data in the X, Y, and Z directions from the acceleration sensor 201, and determines whether the user wearing the measurement device 1 is in a walking or running state or a state other than that. The walking or running state is collectively referred to as a moving state. The state determination unit 501 performs determination using, for example, the method of support vector machines, but is not limited thereto.

[0061] The velocity acquisition unit 502 acquires acceleration data in the X direction from the acceleration sensor 201, and integrates the value of the acceleration data to acquire velocity data in the X direction. The velocity acquisition unit 502 acquires angular velocity data about the Z axis from the angular velocity sensor 202.

[0062] The coefficient calculation unit 503 obtains the velocity data in the X direction and the angular velocity data about the Z axis obtained by the velocity acquisition unit 502, and calculates the correlation coefficient (second coefficient) between the velocity data in the X direction and the angular velocity data about the Z axis.

[0063] When the absolute value of the calculated correlation coefficient is equal to or greater than the threshold value (third threshold value), the coefficient calculation unit 503 adds the calculated correlation coefficient to the determination counter and stores it in the storage device 300. When the absolute value of the calculated correlation coefficient is less than the threshold value, the addition of the correlation coefficient to the determination counter is not performed.

[0064] The determination unit 504 obtains the value of the determination counter from the storage device 300. When the value of the determination counter is greater than the positive threshold value, it is determined that the measurement device 1 is equipped inside out. The determination unit 504 determines that the measurement device 1 is normally equipped when the value of the determination counter is less than the negative threshold value.

[0065] Figure 8 It is a flowchart of the determination process executed by the processing device 500 of the measurement device 1 according to Embodiment 2. Refer to Figure 8 the flowchart of

[0066] When the determination process starts, the determination unit 504 resets the value of the determination counter stored in the storage device 300 (step S200).

[0067] If the value of the determination counter is reset, the state determination unit 501 obtains the acceleration data in the X, Y, and Z directions from the acceleration sensor 201, and determines whether the user equipped with the measurement device 1 is in a moving state based on the acceleration data (step S201). If it is determined that the user is not in a moving state (step S201: No), the determination process ends.

[0068] If it is determined that the user is in a moving state (step S201: Yes), the velocity acquisition unit 502 obtains the acceleration data in the X, Y, and Z directions and the angular velocity data about the Z axis from the acceleration sensor 201, and integrates the values of the acceleration data to obtain the velocity data in the X, Y, and Z directions (step S202).

[0069] When the velocity acquisition unit 502 obtains the velocity data, the coefficient calculation unit 503 obtains the velocity data in the X direction and the angular velocity data about the Z axis obtained by the velocity acquisition unit 502, and calculates the correlation coefficient between the velocity data in the X direction and the angular velocity data about the Z axis (step S203).

[0070] When the coefficient calculation unit 503 calculates the correlation coefficient, it determines whether the absolute value of the calculated correlation coefficient is equal to or greater than the threshold value (step S204). If it is determined that the value is equal to or greater than the threshold value (step S204: Yes), the process proceeds to step S207 described below.

[0071] If it is determined that the value is not equal to or greater than the threshold value (step S204: No), the coefficient calculation unit 503 acquires the velocity data in the Y direction and the velocity data in the Z direction acquired by the velocity acquisition unit 502, and calculates the correlation coefficient between the acquired velocity data in the Y direction and the velocity data in the Z direction (step S205).

[0072] When the coefficient calculation unit 503 calculates the correlation coefficient, it determines whether the absolute value of the calculated correlation coefficient is equal to or greater than the threshold value (step S206). If it is determined that the value is not equal to or greater than the threshold value (step S206: No), the process returns to step S202.

[0073] If it is determined that the absolute value of the correlation coefficient calculated by the coefficient calculation unit is equal to or greater than the threshold value (step S204: Yes or step S206: Yes), the calculated correlation coefficient is added to the determination counter and stored in the storage device 300 (step S207).

[0074] When the coefficient calculation unit 503 adds the correlation coefficient to the determination counter, the determination unit 504 acquires the value of the determination counter from the storage device 300, and determines whether the value of the determination counter is greater than a positive threshold value (step S208).

[0075] If it is determined that the value of the determination counter is greater than the positive threshold value (step S208: Yes), it is determined that the measuring device 1 is equipped inside out, and the determination process ends.

[0076] If it is determined that the value of the determination counter is less than or equal to the positive threshold value (step S208: No), the determination unit 504 acquires the value of the determination counter from the storage device 300, and determines whether the value of the determination counter is less than a negative threshold value (step S210).

[0077] If it is determined that the value of the determination counter is less than the negative threshold value (step S210: Yes), it is determined that the measuring device 1 is normally equipped, and the determination process ends.

[0078] If it is determined that the value of the determination counter is greater than or equal to the negative threshold value (step S210: No), the process returns to step S202.

[0079] By having the above structure and performing the determination process, the measuring device 1 according to the second embodiment has the same effect as the measuring device 1 according to the first embodiment.

[0080] The measurement device 1 determines whether the absolute value of the correlation coefficient between the velocity data in the X direction and the angular velocity data about the Z axis is above a threshold value by the coefficient calculation unit 503. When it is above the threshold value, it is added to the determination counter. When it is not above the threshold value, the calculation of the correlation coefficient between the velocity data in the Y direction and the velocity data in the Z direction is transferred. Thus, the increased correlation coefficient can be used for the inside / outside determination, improving the accuracy of the inside / outside determination. Specifically, when the user is running, there is a tendency for the correlation coefficient between the velocity data in the X direction and the angular velocity data about the Z axis to increase. When the user is walking, there is a tendency for it to decrease. Therefore, by performing the determination using the correlation coefficient between the velocity data in the Y direction and the velocity data in the Z direction in this case, the accuracy of the inside / outside determination can be improved.

[0081] Figure 9 It is a graph showing the velocity in the X direction and the angular velocity about the axis when the user is equipped inside / outside reversely and running. As Figure 9 shown, when the user equips the measurement device 1 inside / outside reversely and runs, there is a tendency for the velocity in the X direction (velX: solid line) and the angular velocity about the Z axis (gyrZ: dotted line) to be in a state of consistent phase. When calculating the correlation coefficient in this state, a positive correlation coefficient is obtained. Since the user's movement has the above tendency, when the determination unit 504 of the measurement device 1 determines that the value of the determination counter is greater than the positive threshold value, it is determined that the measurement device 1 is equipped inside / outside reversely, and thus the inside / outside determination can be correctly performed.

[0082] Figure 10 It is a graph showing the velocity in the X direction and the angular velocity about the Z axis when the user is equipped normally and running. As Figure 10 shown, when the user equips the measurement device 1 normally and runs, there is a tendency for the velocity in the X direction (velX: solid line) and the angular velocity about the Z axis (gyrZ: dotted line) to be in an opposite phase. If the correlation coefficient is calculated in this state, a negative correlation coefficient is obtained. Since the user's movement has the above tendency, when the determination unit 504 of the measurement device 1 determines that the value of the determination counter is less than the negative threshold value, it is determined that the measurement device 1 is equipped normally, and thus the inside / outside determination can be correctly performed.

[0083] (Modified Example)

[0084] Above, the embodiments of the present invention have been described, but the embodiments are just examples, and the application scope of the present invention is not limited thereto. That is, the embodiments of the present invention can be variously applied, and all embodiments are included in the scope of the present invention.

[0085] The measurement device 1 is equipped with the sensor 200, but is not limited thereto. The measurement device 1 may also obtain data in real time from a sensor device as another device and perform a determination process for determining the inside and outside of the sensor device. In this case, as long as it is equipped on the sensor device, the place where the measurement device 1 is configured is not limited.

[0086] The sensor 200 includes an acceleration sensor 201 for measuring acceleration and an angular velocity sensor 202 for measuring angular velocity, but is not limited thereto. A geomagnetic sensor for measuring geomagnetism may also be provided.

[0087] The coefficient calculation unit 503 calculates the correlation coefficient between the velocity data in the Y direction and the velocity data in the Z direction, or the correlation coefficient between the velocity data in the X direction and the angular velocity data about the Z axis, but is not limited thereto. The coefficient may also be calculated based on the phase state of the velocity data and the velocity data, or the velocity data and the angular velocity data.

[0088] The measurement device 1 is equipped with a communication device 400 which is a communication interface for exchanging signals with the outside of the measurement device 1, but is not limited thereto. An interface capable of detaching and attaching a storage medium may also be provided, and data is stored in the storage medium and the storage medium is connected to an external device to provide data to the outside.

[0089] In the first embodiment, when the determination unit 504 determines that the running state is in progress, the speed acquisition unit 502 acquires speed data, but is not limited thereto. The speed acquisition unit 502 may also acquire speed data when the determination unit 504 determines that the user equipped with the measurement device 1 is in a walking state. At this time, the coefficient calculation unit 503 reverses the sign of the calculated correlation coefficient and adds it to the determination counter.

[0090] In the second embodiment, it is described that the measurement device 1 calculates the correlation coefficient between the velocity data in the X direction and the angular velocity data about the Z axis, calculates the correlation coefficient between the velocity data in the Y direction and the velocity data in the Z direction, and performs the determination of the inverse equipment state, but is not limited thereto. The inverse equipment state may also be determined only by calculating the correlation coefficient between the velocity data in the X direction and the angular velocity data about the Z axis without calculating the correlation coefficient between the velocity data in the Y direction and the velocity data in the Z direction.

[0091] In addition, of course, it can be provided as a measurement device that is pre-equipped with a structure for realizing the functions related to the present invention, and an existing measurement device can also function as the measurement device related to the present invention by the application of a program. That is, by applying a program that can be executed by a CPU or the like that controls an existing measurement device to realize the functions of the measurement device illustrated in the embodiments and the modified examples, it can function as the measurement device related to the present invention. In addition, the determination method related to the present invention can be implemented using the measurement device.

[0092] In addition, the application method of such a program is arbitrary. The program can be stored in a computer-readable storage medium such as a floppy disk, a CD (Compact Disc) - ROM, a DVD (Digital Versatile Disc) - ROM, a memory card, etc. for application. Further, the program can also be superimposed on a carrier wave and applied via a communication medium such as the Internet. For example, the program can also be posted on a bulletin board (BBS: Bulletin Board System) on a communication network. Also, it can be configured to start the program and execute it in the same manner as other application programs under the control of the OS (Operating System), whereby the above-described processing can be executed.

[0093] As described above, the preferred embodiments of the present invention have been described, but the present invention is not limited to the specific embodiments involved, and the present invention includes the invention described in the claims and its equivalent scope.

Claims

1. A measuring device, comprising a processing device, characterized in that: The processing device includes: A speed acquisition unit that respectively acquires first speed data, which is speed data in a first direction, and second speed data, which is speed data in a second direction that is substantially orthogonal to the first direction, based on the acceleration acquired by an acceleration sensor; A coefficient calculation unit that calculates a first coefficient based on the first speed data and the second speed data acquired by the speed acquisition unit; And A determination unit that determines whether the measuring device is equipped for a user in a predetermined orientation based on the first coefficient calculated by the coefficient calculation unit, The determination unit determines that the measuring device is equipped for a user in a predetermined orientation when the first coefficient is a negative value, and determines that the measuring device is not equipped for a user in a predetermined orientation when the first coefficient is a positive value.

2. The measuring device according to claim 1, characterized in that: The coefficient calculation unit adds the calculated first coefficient to a determination counter, The determination unit determines whether the measuring device is equipped for a user in a predetermined orientation based on the value of the determination counter and a set first threshold.

3. The measuring device according to claim 2, characterized in that: The coefficient calculation unit adds the calculated first coefficient to the determination counter when the absolute value of the calculated first coefficient is equal to or greater than a second threshold.

4. The measuring device according to claim 1, characterized in that: The speed acquisition unit calculates third speed data, which is speed data in a third direction that is substantially orthogonal to the first direction and the second direction, based on the acceleration acquired by the acceleration sensor, and acquires angular velocity data from an angular velocity sensor that measures angular velocity, The coefficient calculation unit calculates a second coefficient based on the angular velocity data and the third speed data acquired by the speed acquisition unit, The determination unit determines whether the measuring device is equipped for a user in a predetermined orientation based on the second coefficient and the first coefficient calculated by the coefficient calculation unit.

5. The measuring device according to claim 4, characterized in that: The coefficient calculation unit adds the calculated first coefficient and the second coefficient to the determination counter, The determination unit determines whether the measuring device is equipped for a user in a predetermined orientation based on the value of the determination counter and a set first threshold.

6. The measuring device according to claim 4 or 5, characterized in that: The coefficient calculation unit adds the calculated second coefficient to the determination counter when the absolute value of the calculated second coefficient is equal to or greater than a third threshold.

7. The measuring device according to claim 6, characterized in that: The coefficient calculation unit calculates the first coefficient when the absolute value of the calculated second coefficient is less than the third threshold.

8. The measuring device according to any one of claims 1 to 3, characterized in that: The processing device includes: a state determination unit that determines whether the user is in a running state based on data related to the speed obtained by the speed acquisition unit. When the state determination unit determines that the user is in a running state, the coefficient calculation unit calculates the first coefficient.

9. The measurement device according to any one of claims 4, 5, and 7, characterized in that The processing device includes: a state determination unit that determines whether the user is in at least one of a walking state and a running state based on data related to the speed obtained by the speed acquisition unit. When the state determination unit determines that the user is in at least one of a walking state and a running state, the coefficient calculation unit calculates the second coefficient.

10. The measurement device according to any one of claims 1 to 5 and 7, characterized in that The determination unit determines whether the measurement device is reversely equipped based on the calculated first coefficient.

11. The measurement device according to claim 10, characterized in that The reverse equipment means that the measurement device is equipped on the user's body in a state where a part opposite to the part that must be in contact with the body of the measurement device is in contact with the user's body.

12. A measurement device, comprising a processing device, characterized in that The processing device includes: A speed acquisition unit that acquires speed data, which is data of the speed in a certain direction, based on the acceleration acquired by the acceleration sensor, and acquires angular velocity data from an angular velocity sensor that measures the angular velocity. A coefficient calculation unit that calculates a coefficient based on the speed data and the angular velocity data acquired by the speed acquisition unit; And A determination unit that determines whether the measurement device is equipped on the user in a predetermined orientation based on the coefficient calculated by the coefficient calculation unit. When the coefficient is a negative value, the determination unit determines that the measurement device is equipped on the user in a predetermined orientation; when the coefficient is a positive value, the determination unit determines that the measurement device is not equipped on the user in a predetermined orientation.

13. A determination method, characterized in that Based on the acceleration acquired by the acceleration sensor, respectively acquire first speed data, which is data of the speed in a first direction, and second speed data, which is data of the speed in a second direction that is substantially orthogonal to the first direction. Calculate a first coefficient based on the acquired first speed data and second speed data. Determine whether the measurement device is equipped on the user in a predetermined orientation based on the calculated first coefficient. When the first coefficient is a negative value, determine that the measurement device is equipped on the user in a predetermined orientation; when the first coefficient is a positive value, determine that the measurement device is not equipped on the user in a predetermined orientation.

14. A recording medium, characterized in that, A program is recorded, and this program causes a computer to execute: Based on the acceleration acquired by the acceleration sensor, respectively acquire first speed data, which is data of the speed in a first direction, and second speed data, which is data of the speed in a second direction that is substantially orthogonal to the first direction. Calculate a first coefficient based on the obtained first speed data and the second speed data. Determine whether the measuring device is oriented towards the user equipment in a predetermined orientation based on the calculated first coefficient. In the case where the first coefficient is a negative value, it is determined that the measuring device is oriented towards the user equipment in a predetermined orientation. In the case where the first coefficient is a positive value, it is determined that the measuring device is not oriented towards the user equipment in a predetermined orientation.

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