KR102176767B1 - Method, system and non-transitory computer-readable recording medium for correcting sensor data through a sepcific motion of user - Google Patents

Abstract

The present invention provides a method for correcting sensor data through a user′s specific motion to acquire correct sensor data, and a system and a non-transitory computer-readable recording medium thereof. According to one aspect of the present invention, the method comprises the following steps: acquiring predetermined sensor data measured by a sensor which is worn on a target user while the target user performs a predetermined motion and acquiring reference sensor data expected to be measured by a sensor which is worn on a reference user at a reference position and a reference inclination while the reference user performs the predetermined motion; referring to an estimation model, which determines a relationship between the position or inclination of the sensor worn on at least one user and an error appearing in the sensor data measured by the sensor worn on the at least one user while the at least one user performs at least one motion, to estimate information about the position or inclination of the sensor worn on the target user from a difference between the predetermined sensor data and the reference sensor data; and referring to the estimated information about the position or the inclination to estimate an error expected by be included in first sensor data measured by the sensor worn on the target user while the target user performs an arbitrary motion.

Description

A method of calibrating sensor data through user specific actions, system and non-transitory computer-readable recording media {METHOD, SYSTEM AND NON-TRANSITORY COMPUTER-READABLE RECORDING MEDIUM FOR CORRECTING SENSOR DATA THROUGH A SEPCIFIC MOTION OF USER}

The present invention relates to a method, a system, and a non-transitory computer-readable recording medium for correcting sensor data through a specific operation of a user.

In recent years, the number of white-collar workers who sit and work in the office for a long time is increasing, and the amount of time people use smart devices is increasing. However, when people sit and work or use smart devices, they often take the wrong posture, and this wrong posture adversely affects body parts such as the neck, waist, shoulders, and legs. Therefore, the wrong posture causes various diseases, especially cervical and lumbar diseases.

According to statistics from Korea's Health Insurance Review and Assessment Service, the number of spinal disease patients increased by about 10% from 7.6 million in 2012 to 8.4 million in 2016, and the number of cervical disc patients increased by about 20% from 1.6 million to 193 million during the same period. The increasing trend of patients with cervical and lumbar diseases is occurring not only in Korea but also worldwide.According to related studies, it is possible to prevent the above diseases simply by taking the correct posture when sitting or using smart devices. No, it is said that even people with diseases can improve their balance and relieve pain if they take the correct posture.

Accordingly, in recent years, a technology for analyzing and improving the balance of the user's body by estimating the user's walking pattern using a sensor worn on the user's body has been developed. These sensors are worn on the user's body and configured to sense the motion of the user's body.When the sensor is worn on the body, the sensor is incorrectly worn, such as when the sensor is worn in an inclined state or not worn in the correct position. When worn, there is a problem that accurate detection is not made.

Accordingly, the present inventor(s) proposes a technology that enables accurate sensor data to be obtained by correcting the sensor data measured by the sensor even when the sensor is worn by the user in a state other than the reference position or the reference tilt. .

Korean Patent Publication No. 10-2018-0117376 (2018. 10. 29)

An object of the present invention is to solve all the problems of the prior art described above.

In addition, the present invention acquires specific sensor data that is actually measured by a sensor worn by the above target user while the target user performs a specific action, and while the reference user performs the above specific action, the reference user is referenced. Acquire reference sensor data predicted to be measured by the upper sensor worn by the position and the reference inclination, and at least one motion by the position or slope of the upper sensor worn by at least one user and at least one user above The difference between the specific sensor data above and the reference sensor data above with reference to the estimation model that defines the relationship between the errors that appear in the sensor data measured by the above sensors worn by at least one of the above users while performing Estimates information on the position or tilt of the sensor worn on the target user from above, and refers to the information on the estimated location or tilt, while the target user above performs a random operation Another purpose is to estimate an error expected to be included in the first sensor data actually measured by the above sensor worn on the device.

In addition, another object of the present invention is to obtain accurate sensor data by correcting sensor data measured by a corresponding sensor even when a sensor is worn by a user in a state other than a reference position or a reference tilt.

A typical configuration of the present invention for achieving the above object is as follows.

According to an aspect of the present invention, specific sensor data that is actually measured by a sensor worn by the target user while the target user performs a specific operation is acquired, and a reference position is provided to the reference user while the reference user performs the specific operation. And acquiring reference sensor data predicted to be measured by the sensor worn with a reference inclination, while the position or tilt of the sensor worn by at least one user and the at least one user performs at least one operation. With reference to an estimation model that defines a relationship between errors appearing in sensor data measured by the sensor worn by the at least one user, the target user is worn from the difference between the specific sensor data and the reference sensor data. Estimating information on the position or inclination of the sensor, and referring to the information on the estimated position or inclination, actually measured by the sensor worn on the target user while the target user performs an arbitrary operation A method is provided that includes estimating an error expected to be included in the first sensor data being used.

According to another aspect of the present invention, specific sensor data that is actually measured by a sensor worn by the target user while the target user performs a specific operation is acquired, and a reference position is provided to the reference user while the reference user performs the specific operation. And a sensor data management unit that obtains reference sensor data predicted to be measured by the sensor worn with a reference tilt, a position or tilt of the sensor worn by at least one user, and the at least one user performs at least one operation. With reference to an estimation model that defines a relationship between the error appearing in sensor data measured by the sensor worn by the at least one user while performing, the target user is determined from the difference between the specific sensor data and the reference sensor data. With reference to the sensor information estimating unit for estimating information on the position or inclination of the sensor to be worn, and the information on the estimated position or inclination, the target user is worn on the target user while performing an arbitrary operation. A system including an error estimating unit for estimating an error expected to be included in first sensor data actually measured by the sensor is provided.

In addition to this, another method for implementing the present invention, another system, and a non-transitory computer-readable recording medium for recording a computer program for executing the method are further provided.

According to the present invention, specific sensor data that is actually measured by a sensor worn by the target user while the target user performs a specific operation is acquired, and the reference position is applied to the reference user while the reference user performs the specific operation. And acquiring reference sensor data predicted to be measured by the upper sensor worn with the reference tilt, and the position or slope of the upper sensor worn by at least one user and at least one user performing at least one motion. From the difference between the specific sensor data above and the reference sensor data above, with reference to the estimation model that defines the relationship between the error appearing in the sensor data measured by the above sensor worn by at least one of the above users while performing. Estimating information about the position or inclination of the sensor worn by the target user above, and referring to the information on the estimated position or inclination, the target user above is notified while the target user performs an arbitrary operation. It is possible to estimate an error expected to be included in the first sensor data actually measured by the worn upper sensor.

In addition, according to the present invention, even when the sensor is worn by the user in a state other than the reference position or the reference inclination, accurate sensor data can be obtained by correcting sensor data measured by the corresponding sensor.

1 is a diagram illustrating a schematic configuration of an entire system for correcting sensor data through a specific operation of a user according to an embodiment of the present invention.
2 is a diagram illustrating in detail the internal configuration of a sensor data correction system according to an embodiment of the present invention.
3 and 4 are diagrams illustrating a process of estimating information on a position or inclination of a sensor according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION The detailed description of the present invention to be described later refers to the accompanying drawings, which illustrate specific embodiments in which the present invention may be practiced. These embodiments are described in detail sufficient to enable those skilled in the art to practice the present invention. It is to be understood that the various embodiments of the present invention are different from each other, but need not be mutually exclusive. For example, specific shapes, structures, and characteristics described herein may be changed from one embodiment to another and implemented without departing from the spirit and scope of the present invention. In addition, it should be understood that the positions or arrangements of individual elements in each embodiment may be changed without departing from the spirit and scope of the present invention. Therefore, the detailed description to be described below is not made in a limiting sense, and the scope of the present invention should be taken as encompassing the scope claimed by the claims of the claims and all scopes equivalent thereto. Like reference numerals in the drawings indicate the same or similar elements over several aspects.

Hereinafter, various preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings in order to enable those skilled in the art to easily implement the present invention.

Composition of the whole system

1 is a diagram illustrating a schematic configuration of an entire system for correcting sensor data through a specific operation of a user according to an embodiment of the present invention.

As shown in FIG. 1, the entire system according to an embodiment of the present invention may include a communication network 100, a sensor data correction system 200, and a sensor 300.

First, the communication network 100 according to an embodiment of the present invention may be configured regardless of a communication mode such as wired communication or wireless communication, and may be configured as a local area network (LAN) or a metropolitan area network (MAN). ), and a wide area network (WAN). Preferably, the communication network 100 referred to in this specification may be a known Internet or World Wide Web (WWW). However, the communication network 100 is not necessarily limited thereto, and may include a known wired/wireless data communication network, a known telephone network, or a known wired/wireless television communication network in at least part thereof.

For example, the communication network 100 is a wireless data communication network, such as WiFi communication, WiFi-Direct communication, Long Term Evolution (LTE) communication, 5G communication, Bluetooth communication (low-power Bluetooth (BLE) ; Bluetooth Low Energy) communication), infrared communication, ultrasonic communication, and the like may be implemented in at least a part of a conventional communication method. For another example, the communication network 100 is an optical communication network, and may implement a conventional communication method such as LiFi (Light Fidelity) in at least a portion thereof.

Next, the sensor data correction system 200 according to an embodiment of the present invention acquires specific sensor data that is actually measured by a sensor worn by the above target user while the target user performs a specific operation, and the reference user Acquire reference sensor data predicted to be measured by the above sensor worn by the reference position and the reference tilt to the above reference user while performing the above specific operation, and the location of the above sensor worn by at least one user or With reference to an estimation model that defines the relationship between the inclination and the error appearing in sensor data measured by the above sensor worn by at least one user above while performing at least one motion, the above Estimates information about the position or tilt of the upper sensor worn by the target user above from the difference between the specific sensor data of and the reference sensor data above, and with reference to the information about the estimated position or tilt, the above While the target user performs an arbitrary operation, a function of estimating an error expected to be included in the first sensor data actually measured by the sensor worn by the target user may be performed.

The configuration and function of the sensor data correction system 200 according to the present invention will be described in detail through the following detailed description.

Next, the sensor 300 according to an embodiment of the present invention is a digital device that includes a function capable of communicating after connecting to the sensor data correction system 200, and includes a known 6-axis angular velocity/acceleration sensor. I can. Accordingly, acceleration and angular velocity (ie, a velocity inclined in a certain direction) of the X-axis, Y-axis, and Z-axis can be measured by the sensor 300. Furthermore, the angular acceleration may be measured together with or instead of the angular velocity. The sensor 300 may be configured in a form similar to a pedometer in appearance, and may be worn at a location other than the center of the user's body (eg, a right waist or a left waist). However, there is no particular limitation on the type of the sensor 300 and the position where the sensor 300 is worn according to an embodiment of the present invention, and it may be variously changed within a range that can achieve the object of the present invention. have. For example, other types of sensors other than angular velocity and acceleration sensors may be included, and may be worn at a location corresponding to the center of the user's body.

In particular, the sensor 300 may include an application (not shown) that supports a user to receive a service such as sensor data correction from the sensor data correction system 200. Such an application may be downloaded from the sensor data correction system 200 or an external application distribution server (not shown). On the other hand, the characteristics of these applications are the sensor data management unit 210, the sensor information estimation unit 220, the error estimation unit 230, the communication unit 240 and the control unit 250 of the sensor data correction system 200 as described later. May be similar overall to. Here, at least a part of the application may be replaced with a hardware device or a firmware device capable of performing a function substantially the same as or equivalent to the application, if necessary.

Configuration of sensor data correction system

Hereinafter, the internal configuration of the sensor data correction system 200 that performs an important function for the implementation of the present invention and functions of each component will be described.

2 is a diagram showing in detail the internal configuration of the sensor data correction system 200 according to an embodiment of the present invention.

As shown in FIG. 2, the sensor data correction system 200 according to an embodiment of the present invention includes a sensor data management unit 210, a sensor information estimation unit 220, an error estimation unit 230, and a communication unit 240. ) And the control unit 250 may be included. According to an embodiment of the present invention, the sensor data management unit 210, the sensor information estimating unit 220, the error estimating unit 230, the communication unit 240, and the control unit 250 are at least partially connected to an external system. It may be a program module that communicates. Such a program module may be included in the sensor data correction system 200 in the form of an operating system, an application program module, or other program module, and may be physically stored in various known storage devices. In addition, such a program module may be stored in a remote storage device capable of communicating with the sensor data correction system 200. Meanwhile, such a program module includes routines, subroutines, programs, objects, components, data structures, etc. that perform specific tasks or execute specific abstract data types according to the present invention, but is not limited thereto.

On the other hand, the sensor data correction system 200 has been described as above, but this description is illustrative, and at least some of the components or functions of the sensor data correction system 200 are included in an external system (not shown) as necessary. It is obvious to those skilled in the art that it may be realized or included in.

First, the sensor data management unit 210 according to an embodiment of the present invention performs a function of acquiring specific sensor data that is actually measured by the sensor 300 worn by the target user while the target user performs a specific operation. can do.

Specifically, in the case where the target user performs an arbitrary operation while the sensor 300 is worn by the target user in a state other than the reference position or the reference inclination in the actual use environment, the sensor data measured by the sensor 300 Errors may occur. A specific operation according to an embodiment of the present invention may mean a specific operation performed by a target user in a calibration process for estimating and removing the above error. In addition, the sensor data management unit 210 according to an embodiment of the present invention acquires specific sensor data that is actually measured by the sensor 300 worn by the target user while the target user performs the specific operation above. can do. Further, the specific sensor data according to an embodiment of the present invention may mean data obtained by aggregating a plurality of sensor data obtained by repeatedly performing a specific operation by a target user, and an average of the values of the plurality of sensor data. As described above, it may mean a result of performing a predetermined operation on the plurality of sensor data.

Subsequently, according to an embodiment of the present invention, the above specific motion is at least one of the Z axis orthogonal to the horizontal plane, the Y axis parallel to the horizontal plane, and the Y axis and the X axis perpendicular to the Z axis. It may mean an action related to an axis. Here, the positive direction of the X-axis may mean a direction pointing toward the body of the target user. That is, if the target user is walking, the positive direction of the X-axis may mean a direction opposite to the moving direction of the target user. And, according to an embodiment of the present invention, the motion associated with at least one of the above X-axis, Y-axis, and Z-axis means that while the target user performs a specific motion, the motion is applied to at least one of the three axes above. It may mean an operation in which rotation or movement occurs.

For example, according to an embodiment of the present invention, in the specific motion above, the motion of lowering the waist in which rotation occurs only about the Y-axis, the motion of sitting or taking place in which the vertical movement occurs only about the Z-axis, and only the Z-axis. It may include an operation of rotating the body where rotation occurs. However, a specific operation according to an embodiment of the present invention is not limited to those listed above, and may be variously changed within a range capable of achieving the object of the present invention. In particular, it should be understood that a specific motion according to an embodiment of the present invention does not necessarily mean an action associated with only one axis, but includes an action associated with two or more axes.

Meanwhile, the sensor data management unit 210 according to an embodiment of the present invention may perform a function of providing information on a specific operation to a target user before acquiring specific sensor data.

Specifically, the sensor data management unit 210 according to an embodiment of the present invention may provide guide information on the specific operation to the target user so that the target user can perform a specific operation. For example, the sensor data management unit 210 according to an embodiment of the present invention is designed to generate sound (eg, voice), light (eg, light of a specific color), etc. from the sensor 300. By controlling the sensor 300 of, it is possible to provide guide information for a specific operation to a target user.

For another example, the sensor data management unit 210 according to an embodiment of the present invention controls the above device so that guide information for the above specific operation is displayed on the display of the device (not shown) to the target user. Guide information for a specific operation can be provided. Here, the device according to an embodiment of the present invention is a digital device including a function capable of communicating after accessing the sensor data correction system 200, and includes a smartphone, a tablet, a smart watch, a smart band, a smart glass, and a desktop. Any digital device equipped with a memory means such as a computer, a notebook computer, a workstation, a PDA, a web pad, a mobile phone, etc. and equipped with a microprocessor and capable of computing can be adopted as the device according to the present invention. In particular, the device may include an application (not shown) that supports a target user to receive a service such as sensor data correction from the sensor data correction system 200. Such an application may be downloaded from the sensor data correction system 200 or an external application distribution server (not shown).

Furthermore, the sensor data management unit 210 according to an embodiment of the present invention may perform a function of determining whether a target user has performed a specific operation. For example, it may be assumed that the sensor data management unit 210 according to an embodiment of the present invention notifies a target user to perform a bowing motion through an application installed in the device. In this case, the sensor data management unit 210 according to an embodiment of the present invention analyzes the sensor data actually measured by the sensor 300 worn by the target user while the target user performs a certain operation, It can be determined whether the user has performed the motion of lowering the waist, and if it is determined that the motion has been lowered, the measured sensor data can be obtained as target sensor data.

In addition, the sensor data management unit 210 according to an embodiment of the present invention includes a reference predicted to be measured by the sensor 300 worn at the reference position and the reference tilt to the reference user while the reference user performs a specific operation. It can perform a function of acquiring sensor data.

Specifically, according to an embodiment of the present invention, the reference position is such that there is no error according to the wearing position of the sensor 300 in the sensor data predicted to be measured by the sensor 300 while the reference user performs a specific operation. It can mean a location to be. For example, such a reference position is a position separated by a predetermined distance to the left from the right end of the right anterior superior iliac spine (ASIS) of the reference user, and a position separated by a predetermined distance to the right from the belly button of the reference user. It can be set in advance, etc. And, according to an embodiment of the present invention, the reference slope is determined according to the wearing angle and the wearing direction of the sensor 300 above in the sensor data predicted to be measured by the sensor 300 while the reference user performs a specific operation. It can mean a slope where there is no error. For example, this reference inclination is preset as a slope in which one side of the sensor 300 faces the body of the reference user and the top of the sensor 300 faces the direction opposite to the direction of gravity. Can be.

However, the reference position and the reference inclination according to an embodiment of the present invention are not limited to those listed above, and may be variously changed within a range capable of achieving the object of the present invention.

3 is a diagram illustrating a process of estimating information about a position or inclination of a sensor according to an embodiment of the present invention.

Referring to FIG. 3A, it is possible to check a state in which the sensor 300 is worn at a reference position and a reference tilt. And, referring to (b) of FIG. 3, although the sensor 300 is worn with a reference inclination, it can be confirmed that the sensor 300 is not worn at the reference position. And, referring to (c) of FIG. 3, although the sensor 300 is worn at the reference position, it can be confirmed that the sensor 300 is not worn at the reference tilt.

Next, the sensor information estimating unit 220 according to an embodiment of the present invention, the position or slope of the sensor 300 worn by at least one user and at least one user above while performing at least one operation. A sensor data management unit 210 according to an embodiment of the present invention with reference to an estimation model defining a relationship between errors appearing in sensor data measured by the above sensor 300 worn by at least one user above. A function of estimating information on the position or inclination of the sensor 300 worn by the target user from the difference between the specific sensor data and the reference sensor data obtained by the method may be performed.

Specifically, the sensor information estimating unit 220 according to an embodiment of the present invention includes the position or slope of the sensor 300 worn by at least one user and at least one user above while performing at least one operation. An estimation model may be constructed using empirical data about an error appearing in sensor data measured by the above sensor 300 worn by at least one of the above users. In addition, the sensor information estimating unit 220 according to an embodiment of the present invention refers to the difference between the specific sensor data and the reference sensor data acquired by the sensor data management unit 210 according to an embodiment of the present invention. Information about the position or tilt of the sensor 300 worn by the target user may be estimated. Here, the information about the position of the sensor 300 above may include the relative position of the sensor 300 with respect to the reference position, and the information about the slope of the sensor 300 above may include the sensor ( 300) may be included (ie, a direction and angle inclined from the reference slope).

More specifically, the sensor information estimation unit 220 according to an embodiment of the present invention, while at least one user (a target user may also be included) wearing the sensor 300 at various positions or at various inclinations While performing at least one operation (which may include a specific operation), information about an error appearing in sensor data measured by the sensor 300 may be collected. And, based on the collected information, by deriving a relationship between the position or tilt of the sensor 300 worn by the user and the error appearing in the sensor data, it is possible to construct an estimation model.

3 and 4 are diagrams illustrating a process of estimating information on a position or inclination of a sensor according to an embodiment of the present invention.

For example, referring to FIG. 4A, when the sensor 300 is worn by a user at a reference position and a reference inclination, the X-axis, Y-axis, and Z-axis directions of the sensor 300 can be checked. . Here, the positive direction of the X-axis may mean a direction pointing toward the user's body. In this case, if the sensor data measured by the sensor 300 is analyzed while the user bows the waist, the acceleration data of the X-axis and the acceleration data of the Z-axis of the sensor 300 change, but the acceleration data of the Y-axis. Does not change.

Subsequently, referring to (b) of FIG. 4, when the sensor 300 is worn by a user at an inclined slope rather than a reference position, the X-axis, Y-axis and Z-axis directions of the sensor 300 can confirm. In this case, if the sensor data measured by the sensor 300 is analyzed while the user bows the waist, not only the acceleration data of the X-axis and the acceleration data of the Z-axis of the sensor 300, but also the acceleration data of the Y-axis are Change. That is, in this case, an error is included in the X-axis, Y-axis, and Z-axis acceleration data of the sensor 300 measured by the sensor 300 while the user bows the waist. Accordingly, the sensor information estimating unit 220 according to an embodiment of the present invention includes an error appearing in the sensor data measured from the sensor 300 during the tilt of the sensor 300 and the user bowing the waist. You can build an estimation model based on.

For another example, referring to FIGS. 3(b) and 4(a), the user rotates the body in a state where the sensor 300 is worn at a reference position at a reference inclination (FIG. 4(a)) The user rotates the torso in a state where the sensor data measured by the sensor 300 and the sensor 300 are worn at a reference inclination at a position other than the reference position (Fig. 3(b)) while performing the operation. When the sensor data measured by the sensor 300 is analyzed during the operation, the difference between the X-axis acceleration data and the Y-axis acceleration data of the corresponding sensor 300 measured in each state (Fig. (b) The amount of change in the state is larger). That is, in this case, an error is included in the X-axis and Y-axis acceleration data of the sensor 300 measured by the sensor 300 while the user rotates the body. Accordingly, the sensor information estimating unit 220 according to an embodiment of the present invention shows the location of the sensor 300 and the sensor data measured from the sensor 300 while the user rotates the body. You can build an estimation model based on the error.

Meanwhile, the estimation model according to an embodiment of the present invention may be constructed using various known artificial intelligence (machine learning) algorithms. For example, it may be constructed using an artificial neural network such as a convolutional neural network (CNN) or a recurrent neural network (RNN), but is not limited thereto. In addition, the sensor information estimating unit 220 according to an embodiment of the present invention performs a function of updating an existing estimation model based on newly acquired information, not only referring to a previously constructed estimation model. I can. Such an estimation model may be used to correct sensor data through a user's specific motion, and further, may be used to analyze a user's posture, correct a posture, and the like.

Next, the error estimating unit 230 according to an embodiment of the present invention refers to the information on the position or inclination estimated by the sensor information estimating unit 220 according to an embodiment of the present invention, While performing an arbitrary operation, a function of estimating an error expected to be included in the first sensor data actually measured by a sensor worn by the target user may be performed.

Specifically, according to an embodiment of the present invention, the above sensor from the difference between the reference sensor data and the specific sensor data actually measured by the sensor 300 worn by the target user while the target user performs a specific action. When information about the position or slope of 300 is estimated, the error estimating unit 230 according to an embodiment of the present invention refers to the information about the estimated position or slope, and the above target user During the operation, an error expected to be included in the first sensor data actually measured by the sensor 300 may be estimated. In addition, the error estimating unit 230 according to an embodiment of the present invention removes the estimated error from the first sensor data, so that the sensor 300 is positioned in a state other than the reference position or the reference slope. Even when worn on the target user of, accurate sensor data can be obtained.

Next, the communication unit 240 according to an embodiment of the present invention performs a function of enabling data transmission and reception from/to the sensor data management unit 210, the sensor information estimation unit 220, and the error estimation unit 230. can do.

Finally, the control unit 250 according to an embodiment of the present invention controls the flow of data between the sensor data management unit 210, the sensor information estimation unit 220, the error estimation unit 230, and the communication unit 240. Can be done. That is, the control unit 250 according to the present invention controls the data flow from/to the outside of the sensor data correction system 200 or the data flow between each component of the sensor data correction system 200, thereby controlling the sensor data management unit 210 ), the sensor information estimating unit 220, the error estimating unit 230, and the communication unit 240 may each perform a unique function.

The embodiments according to the present invention described above may be implemented in the form of program instructions that can be executed through various computer components and recorded in a computer-readable recording medium. The computer-readable recording medium may include program instructions, data files, data structures, etc. alone or in combination. The program instructions recorded in the computer-readable recording medium may be specially designed and configured for the present invention or may be known and usable to those skilled in the computer software field. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tapes, optical recording media such as CD-ROMs and DVDs, and magnetic-optical media such as floptical disks. medium), and a hardware device specially configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of the program instructions include not only machine language codes such as those produced by a compiler but also high-level language codes that can be executed by a computer using an interpreter or the like. The hardware device can be changed to one or more software modules to perform the processing according to the present invention, and vice versa.

In the above, the present invention has been described by specific matters such as specific elements and limited embodiments and drawings, but this is provided only to help a more general understanding of the present invention, and the present invention is not limited to the above embodiments. Anyone with ordinary knowledge in the technical field to which the invention belongs can make various modifications and changes from these descriptions.

Accordingly, the spirit of the present invention is limited to the above-described embodiments and should not be defined, and all ranges equivalent to or equivalently changed from the claims to be described later as well as the claims to be described later are the scope of the spirit of the present invention. It will be said to belong to.

100: communication network
200: sensor data correction system
210: sensor data management unit
220: sensor information estimation unit
230: error estimation unit
240: communication department
250: control unit
300: sensor

Claims (11)

As a method of calibrating sensor data through a user's specific motion,
The sensor that acquires specific sensor data actually measured by a sensor worn by the target user while the target user performs a specific action, and is worn by the reference user at a reference position and a reference inclination while the reference user performs the specific action Obtaining reference sensor data predicted to be measured by,
The relationship between the position or tilt of the sensor worn by at least one user and the error appearing in sensor data measured by the sensor worn by the at least one user while the at least one user performs at least one operation. Estimating information on the position or inclination of the sensor worn by the target user from the difference between the specific sensor data and the reference sensor data with reference to the defined estimation model, and
Estimating an error expected to be included in first sensor data actually measured by the sensor worn by the target user while the target user performs an arbitrary operation with reference to the estimated position or inclination information Including,
The sensor includes at least one of an acceleration sensor and an angular velocity sensor,
The specific operation is a predetermined operation performed before the target user performs the arbitrary operation in order to estimate an error expected to be included in the first sensor data.
Way. The method of claim 1,
The specific motion is related to at least one of the Z axis orthogonal to the horizontal plane, the Y axis parallel to the horizontal plane, and the Y axis and the X axis perpendicular to the Z axis.
Way. The method of claim 2,
The specific motion includes at least one of a motion of bowing a waist, a motion of sitting or rising, and a motion of rotating the body.
Way. The method of claim 1,
Providing information on the specific operation to the target user before acquiring the specific sensor data
Way. delete A non-transitory computer-readable recording medium for recording a computer program for executing the method according to claim 1. As a system that corrects sensor data through a user's specific motion,
The sensor that acquires specific sensor data actually measured by a sensor worn by the target user while the target user performs a specific action, and is worn by the reference user at a reference position and a reference inclination while the reference user performs the specific action A sensor data management unit that acquires reference sensor data predicted to be measured by
The relationship between the position or tilt of the sensor worn by at least one user and the error appearing in sensor data measured by the sensor worn by the at least one user while the at least one user performs at least one operation. A sensor information estimating unit for estimating information on a position or inclination of the sensor worn by the target user from a difference between the specific sensor data and the reference sensor data with reference to the defined estimation model, and
An error of estimating an error expected to be included in the first sensor data actually measured by the sensor worn by the target user while the target user performs an arbitrary operation by referring to the estimated position or tilt information Including the estimation unit,
The sensor includes at least one of an acceleration sensor and an angular velocity sensor,
The specific operation is a predetermined operation performed before the target user performs the arbitrary operation in order to estimate an error expected to be included in the first sensor data.
system. The method of claim 7,
The specific motion is related to at least one of the Z axis orthogonal to the horizontal plane, the Y axis parallel to the horizontal plane, and the Y axis and the X axis perpendicular to the Z axis.
system. The method of claim 8,
The specific motion includes at least one of a motion of bowing a waist, a motion of sitting or rising, and a motion of rotating the body.
system. The method of claim 7,
The sensor data management unit provides information on the specific operation to the target user before acquiring the specific sensor data.
system. delete

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