KR102182974B1 - System for supporting virtual reality indoor bike exercise and method thereof - Google Patents

Abstract

Disclosed is a system and method for supporting a virtual reality indoor bicycle exercise according to an embodiment. The system for supporting the indoor bicycle exercise includes a motion sensor module mounted on a lower body of a user operating a pedal of an indoor bicycle and obtaining motion data based on the movement of the lower body; And calculating an angle of the pedal based on the obtained motion data, calculating a moving distance of the indoor bicycle using the calculated angle of the pedal, and driving the indoor bicycle based on the calculated moving distance. It includes VR (Virtual Reality) devices that provide virtual reality content.

Description

System for supporting virtual reality indoor bicycle exercise and its method {SYSTEM FOR SUPPORTING VIRTUAL REALITY INDOOR BIKE EXERCISE AND METHOD THEREOF}

The embodiment relates to a system and method for supporting a virtual reality indoor bicycle exercise.

Virtual reality (VR) refers to a specific environment or situation or the technology itself that is similar to reality created by artificial technology using computers, etc. but not real. At this time, the created virtual environment or situation stimulates the user's five senses and allows them to freely enter the boundary between reality and imagination by allowing them to experience spatial and temporal similarities to the real world. In addition, users can not only immerse themselves in virtual reality, but also interact with things implemented in virtual reality, such as manipulating or applying commands using real devices. In addition, virtual reality is distinguished from unilateral simulation in that it can interact with users and create user experiences.

In recent years, as interest in health care has increased, attempts to combine this with virtual reality are increasing. It has the advantage of being able to enjoy it indoors at any time without space and time constraints, so users' response is increasing. However, the developed devices can enjoy virtual reality sports only when a virtual reality device and dedicated exercise equipment are combined. For example, in the case of a cycle, there is a problem that a dedicated bicycle that can be linked with a virtual reality device must be used.

Registered Patent Publication No. 10-1680972 Registered Patent Publication No. 10-1780743

The embodiment may provide a system and method for supporting a virtual reality indoor bicycle exercise.

A motion sensor module mounted on a lower body of a user operating a pedal of an indoor bicycle according to an embodiment of the present invention, and obtaining motion data based on the movement of the lower body; And calculating an angle of the pedal based on the obtained motion data, calculating a moving distance of the indoor bicycle using the calculated angle of the pedal, and driving the indoor bicycle based on the calculated moving distance. It may include a VR (Virtual Reality) device that provides virtual reality content.

The VR device may extract a pitch value included in the acquired motion data and calculate an angle of the pedal based on the extracted pitch value.

The VR device may calculate the angle of the pedal using an angle conversion table in which a pitch value for each pedal angle is defined based on the extracted pitch value.

The VR device may apply the angle conversion table to a maximum pitch value and a minimum pitch value among pitch values measured in advance through the motion sensor module.

The angle of the pedal is divided into four sections based on the maximum pitch value and the minimum pitch value, the first section is -10˚ to 45˚, the second section is 45˚ to 130˚, and the third section Is 130˚~225˚, and the fourth section can be 225˚~350˚.

The VR device activates a mobile application according to an external input signal, receives motion data in connection with the motion sensor module through the activated mobile application, and drives the indoor bicycle based on the received motion data. It can provide virtual reality content.

The motion sensor module may include a sensor unit for sensing a value for a three-dimensional posture according to the movement of the lower body of the user; A signal processing unit that generates the motion data based on the sensed 3D posture value; And a communication unit that transmits the generated motion data to the VR device.

A system for supporting an indoor bicycle exercise according to another embodiment of the present invention includes: a communication unit receiving motion data obtained from a motion sensor module mounted on a lower body of a user operating a pedal of an indoor bicycle; A control unit calculating an angle of the pedal based on the received motion data and calculating a moving distance of the indoor bicycle using the calculated angle of the pedal; And a display unit that provides virtual reality content on which the indoor bicycle is running based on the calculated moving distance.

The controller may extract a pitch value included in the obtained motion data and calculate the angle of the pedal using an angle conversion table in which a pitch value for each pedal angle is defined based on the extracted pitch value.

According to another embodiment of the present invention, a method for supporting an indoor bicycle exercise includes receiving motion data obtained from a motion sensor module mounted on a lower body of a user who operates a pedal of an indoor bicycle; Calculating an angle of the pedal based on the obtained motion data, and calculating a movement distance of the indoor bicycle using the calculated angle of the pedal; And providing virtual reality content on which the indoor bicycle is running based on the calculated moving distance.

In the calculating step, a pitch value included in the acquired motion data may be extracted, and the angle of the pedal may be calculated using an angle conversion table in which a pitch value for each pedal angle is defined based on the extracted pitch value. .

According to the embodiment, since it is mounted on the user's lower body, an existing indoor bicycle can be used.

According to the embodiment, since the width and speed of pedaling for an actual user are applied, the feeling of riding an actual cycle can be felt.

According to an embodiment, it may be applicable to all HMDs or mobile devices owned by the user.

1 is a diagram illustrating a system for supporting an indoor bicycle exercise according to an embodiment of the present invention.
FIG. 2 is a diagram for describing a state in which the motion sensor module shown in FIG. 1 is worn.
3 is a diagram showing the shape of a motion sensor module actually implemented.
4 is a diagram showing a detailed configuration of the motion sensor module shown in FIG. 1.
5 is a diagram for explaining a format of motion data transmitted by a motion sensor module.
6 is a diagram illustrating a detailed configuration of the VR device shown in FIG. 1.
7 is a diagram for explaining the principle of calculating the angle of the pedal according to the pitch value.
FIG. 8 is a diagram for explaining a section divided according to an angle of the pedal shown in FIG. 7.
9 is a diagram illustrating a method for supporting an indoor bicycle exercise according to an embodiment of the present invention.

The present invention is intended to illustrate and describe specific embodiments in the drawings, as various changes may be made and various embodiments may be provided. However, this is not intended to limit the present invention to a specific embodiment, it is to be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention.

Terms including ordinal numbers, such as second and first, may be used to describe various elements, but the elements are not limited by the terms. These terms are used only for the purpose of distinguishing one component from another component. For example, without departing from the scope of the present invention, a second component may be referred to as a first component, and similarly, a first component may be referred to as a second component. The term and/or includes a combination of a plurality of related listed items or any of a plurality of related listed items.

When a component is referred to as being "connected" or "connected" to another component, it is understood that it may be directly connected or connected to the other component, but other components may exist in the middle. Should be. On the other hand, when a component is referred to as being "directly connected" or "directly connected" to another component, it should be understood that there is no other component in the middle.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms as defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in this application. Does not.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings, but the same reference numerals are assigned to the same or corresponding components regardless of the reference numerals, and redundant descriptions thereof will be omitted.

In an embodiment, motion data based on the movement of the user's body manipulating an indoor bicycle is obtained, the angle of the pedal is calculated based on the obtained motion data, and the moving distance of the indoor bicycle is calculated based on the calculated angle of the pedal. Thus, a new method is proposed to provide virtual reality contents in which an indoor bicycle is running based on the calculated moving distance.

1 is a diagram illustrating a system for supporting an indoor bicycle exercise according to an embodiment of the present invention.

Referring to FIG. 1, a system for supporting a virtual reality indoor bicycle exercise according to an embodiment of the present invention may include a motion sensor module 100 and a Virtual Reality (VR) device 200.

The motion sensor module 100 may be mounted on the lower body of a user who operates a pedal of an indoor bicycle. The motion sensor module 100 may acquire motion data according to the motion of the user's lower body and transmit the acquired motion data to the VR device 200 wirelessly.

The motion sensor module 100 may be configured to include a 3-axis gyro sensor (3-Axis Gyroscope), a 3-axis acceleration sensor (3-Asis Accelerometer), and a 3-axis geomagnetic sensor (3-Asis Magnetometer). The gyro sensor measures the angular speed at which an object rotates. With the recent development of semiconductor processes, it has been developed into a low-cost, ultra-small gyro sensor capable of mass production, and has been applied to various fields such as vehicle navigation cameras, mobile phone game machines, etc. The acceleration sensor measures dynamic forces such as acceleration, vibration, and impact of a moving object. Since the motion state of an object can be detected in detail, the field of application is very wide and is used for various purposes. The geomagnetic sensor measures the strength of the Earth's magnetic field and can detect the azimuth angle based on the Earth's magnetic north pole. Since the magnetic field also changes according to the location, there is no cumulative error in the measurement and no error due to temperature change.

The VR device 200 may be provided with motion data in connection with the motion sensor module 100 and may provide virtual reality content in which an indoor bicycle is running based on the received motion data.

Specifically, the VR device 200 calculates the angle of the pedal based on the received motion data, calculates the moving distance of the indoor bicycle using the calculated angle of the pedal, and calculates the virtual reality content based on the calculated moving distance. Can provide.

The VR device 200 activates a mobile application by an external input signal, receives motion data by interworking with the motion sensor module through the activated mobile application, and provides virtual reality content based on the received motion data. have.

At this time, the mobile application is an application for providing various virtual reality contents that can perform cycle movements in virtual reality with the motion of the lower body measured by the motion sensor module attached to the user's lower body. Personal Computer), HMD (Head Mounted Display), etc. can also be used.

FIG. 2 is a view for explaining a state of wearing the motion sensor module shown in FIG. 1, and FIG. 3 is a view showing the shape of the actually implemented motion sensor module.

Referring to FIG. 2, since a cycle, that is, an indoor bicycle is an exercise in which both sides of the lower body move evenly, the motion sensor module 100 can be worn only on one lower body, and because the movement of the lower body is measured, an existing indoor bicycle is used. I can.

Referring to FIG. 3, the motion sensor module 100 according to the embodiment is attached to and fixed to the user's lower body to obtain accurate motion data, so that the motion sensor module 100 is supported and attached to the user's lower body. A support member 100a for doing so may be provided.

At this time, since the support member 100a is adjustable in length, the position to which the motion sensor module is attached may be changed, and the position to which the motion sensor module is attached may be, for example, a thigh, a calf, or a foot.

4 is a diagram showing a detailed configuration of the motion sensor module shown in FIG. 1, and FIG. 5 is a diagram for explaining a format of motion data transmitted by the motion sensor module.

Referring to FIG. 4, a motion sensor module 100 according to an embodiment of the present invention may include a sensor unit 110, a signal processing unit 120, a communication unit 130, and a power supply unit 140.

The sensor unit 110 may sense a value for a 3D posture according to the user's lower body movement, and may include a 3-axis gyro sensor, a 3-axis acceleration sensor, and a 3-axis geomagnetic sensor.

The signal processing unit 120 may generate motion data based on a value of the sensed 3D posture. The signal processing unit 120 may accurately measure the rotational motion of the lower body through a DCM algorithm, a linear acceleration removal algorithm, and a geomagnetic sensor output compensation algorithm.

Referring to FIG. 5, motion data according to an embodiment may be transmitted by being inserted into a data field of a data packet. The data packet is divided into a header, a data field, and a tailor.

Such motion data can be expressed in, for example, a quaternion method, where a quaternion consists of four numbers (x, y, z, w), and each component does not mean an axis or angle, but a vector (x , y, z) and one scalar (w).

The communication unit 130 may transmit the generated motion data to the VR device through wireless communication. Here, the wireless communication may include WiFi, Bluetooth Low Energy (BLE), Zigbee, and wireless LAN.

The power supply unit 140 may supply power to the sensor unit 110, the signal processing unit 120, and the communication unit 130.

6 is a diagram illustrating a detailed configuration of the VR device shown in FIG. 1.

Referring to FIG. 6, a VR device 200 according to an embodiment of the present invention includes a communication unit 210, an input unit 220, a control unit 230, a display unit 240, and a storage unit 250. Can be.

The communication unit 210 may transmit and receive various data in conjunction with the motion sensor module 100. For example, the communication unit 210 may receive motion data obtained from the motion sensor module 100.

The input unit 220 may receive information according to a user's menu or key manipulation.

The controller 230 may calculate an angle of a pedal based on the received motion data, and provide virtual reality content on which an indoor bicycle runs by using the calculated angle of the pedal.

At this time, the control unit 230 extracts the Y-axis angle or pitch value included in the received motion data, and the pitch value for each pedal angle based on the extracted pitch value is applied to the pedal using a predefined angle conversion table. The angle of can be calculated.

7 is a view for explaining the principle of calculating the angle of the pedal according to the pitch value, and FIG. 8 is a view for explaining a section divided according to the angle of the pedal shown in FIG. 7.

Referring to FIG. 7, the change over time of the Y-axis angle or pitch value measured from the motion sensor module as the user actually rotates the indoor bicycle by pressing the pedal.

The angle of the pedal is divided into four sections based on the maximum and minimum pitch values. Here, the four sections are divided into PHASE 1, PHASE 2, PHASE 3, and PHASE 4.

Referring to FIG. 8, the pedal angle becomes the maximum pitch value at 350° and the pedal angle becomes the minimum pitch value at 170°. Therefore, the first section phase1 is -10˚~45˚, the second section is 45˚~130˚, the third section is 130˚~225˚, and the fourth section is 225˚~350˚.

The pitch value for each pedal angle is defined as an angle conversion table as shown in [Table 1] below.

Stage Pedal angle Pitch ratio pitch PHASE 1 -10˚ 100% MAX 45˚ 69.45% PHASE 2 45˚ 69.45% 130˚ 12.23% PHASE 3 130˚ 12.23% 170˚ 0 MIN 225˚ 30.55% PHASE 4 225˚ 30.55% 350˚ 100% MAX

The controller 230 may convert the pitch value to the pedal angle using the angle conversion table of Table 1 defined based on the pedal angle, the maximum pitch value, and the minimum pitch value. In this case, the wheel size, Since the maximum and minimum pitch values measured by the motion sensor module are different depending on the type of cycle such as the saddle slope, the size of a person's body, and the wearing position of the motion sensor module, the maximum pitch value through trial pedaling before starting exercise And the minimum pitch value can be measured and reflected in the angle conversion table.

The display unit 240 may provide an actual driving environment by displaying virtual reality contents in which the indoor bicycle is running based on the calculated moving distance.

The storage unit 250 may store an angle conversion table in which a pitch value for each pedal angle is predefined. This angle conversion table can be set, changed or updated by the user.

At this time, it is necessary to change direction when riding a bicycle on a bicycle road in virtual reality. To this end, although not shown in the embodiment, a sensor unit capable of measuring the user's head tilt or head rotation angle is further provided in the VR device 200 to use the value measured from the sensor unit or to link the VR device and the mobile device. In this case, the measured value may be provided from a mobile device and used. That is, the direction change may be performed according to the user's head tilt or head rotation angle provided by a VR device or a mobile device (when a mobile device is connected to the VR device). For example, if you tilt your head to the right during exercise, the handlebar of the bicycle is bent to the right and you can change direction.

Therefore, the controller 230 may control to display the virtual reality content on which the indoor bicycle is running based on the user's head tilt or head rotation angle and the calculated moving distance.

As described above, according to an exemplary embodiment of the present invention, a cycle in which the handle moves is not required because the direction can be changed by tilting the head while wearing the VR device.

9 is a diagram illustrating a method for supporting an indoor bicycle exercise according to an embodiment of the present invention.

Referring to FIG. 9, the VR device according to an embodiment of the present invention may receive motion data obtained from a motion sensor module mounted on a lower body of a user operating a pedal of an indoor bicycle (S910).

Next, the VR device may calculate the angle of the pedal based on the acquired motion data (S920). In this case, the VR device extracts a pitch value included in the acquired motion data, and calculates the angle of the pedal using an angle conversion table in which a pitch value for each pedal angle is defined based on the extracted pitch value.

Next, the VR device may calculate the moving distance of the indoor bicycle by using the calculated pedal angle (S930).

Next, the VR device may provide an environment in which the indoor bicycle is running by providing virtual reality content in which the indoor bicycle is running based on the calculated moving distance (S940).

The term'~ unit' used in this embodiment refers to software or hardware components such as field-programmable gate array (FPGA) or ASIC, and'~ unit' performs certain roles. However,'~ part' is not limited to software or hardware. The'~ unit' may be configured to be in an addressable storage medium, or may be configured to reproduce one or more processors. Thus, as an example,'~ unit' refers to components such as software components, object-oriented software components, class components and task components, processes, functions, properties, and procedures. , Subroutines, segments of program code, drivers, firmware, microcode, circuitry, data, database, data structures, tables, arrays, and variables. The components and functions provided in the'~ units' may be combined into a smaller number of elements and'~ units', or may be further divided into additional elements and'~ units'. In addition, components and'~ units' may be implemented to play one or more CPUs in a device or a security multimedia card.

Although the above has been described with reference to preferred embodiments of the present invention, those skilled in the art will variously modify and change the present invention within the scope not departing from the spirit and scope of the present invention described in the following claims. You will understand that you can do it.

100: motion sensor module
110: sensor unit
120: signal processing unit
130: communication department
200: VR device
210: communication department
220: input unit
230: control unit
240: display unit
250: storage unit

Claims (11)

A motion sensor module mounted on a lower body of a user who operates a pedal of an indoor bicycle, and obtaining motion data by movement of the lower body; And
Calculate a change in the angle of the pedal based on the obtained motion data, calculate a movement distance of the indoor bicycle using the calculated change in the angle of the pedal, and calculate the movement distance of the indoor bicycle based on the calculated movement distance Including a VR (Virtual Reality) device that provides the virtual reality content that is driving,
The VR device,
Extracting the pitch value, which is the Y-axis angle included in the obtained motion data,
A system for supporting indoor bicycle exercise for calculating a change in an angle of the pedal using an angle conversion table in which a pitch value for each pedal angle is defined based on a change in the extracted pitch value over time. delete delete The method of claim 1,
The VR device,
A system for supporting an indoor bicycle exercise by applying the angle conversion table to a maximum pitch value and a minimum pitch value among pitch values previously measured through the motion sensor module. The method of claim 4,
The angle of the pedal is divided into four sections based on the maximum pitch value and the minimum pitch value,
The first section is -10˚~45˚, the second section is 45˚~130˚, the third section is 130˚~225˚, and the fourth section is 225˚~350˚, supporting indoor cycling System for doing. The method of claim 1,
The VR device,
Activate the mobile application by an external input signal,
A system for supporting indoor bicycle exercise, receiving motion data in connection with the motion sensor module through the activated mobile application and providing virtual reality content on which the indoor bicycle is running based on the received motion data. The method of claim 1,
The motion sensor module,
A sensor unit sensing a value for a three-dimensional posture according to the movement of the user's lower body;
A signal processing unit that generates the motion data based on the sensed 3D posture value; And
A system for supporting indoor bicycle exercise, comprising a communication unit for transmitting the generated motion data to the VR device. A communication unit for receiving motion data obtained from a motion sensor module mounted on a lower body of a user operating a pedal of an indoor bicycle;
A control unit calculating a change in the angle of the pedal based on the received motion data and calculating a movement distance of the indoor bicycle by using the calculated change in the angle of the pedal; And
Including a display unit for providing virtual reality content on which the indoor bicycle is running based on the calculated moving distance,
The control unit,
Extracting the pitch value, which is the Y-axis angle included in the obtained motion data,
A system for supporting indoor bicycle exercise for calculating a change in an angle of the pedal using an angle conversion table in which a pitch value for each pedal angle is defined based on a change in the extracted pitch value over time. delete Receiving motion data obtained from a motion sensor module mounted on a lower body of a user operating a pedal of an indoor bicycle;
Calculating a change in the angle of the pedal based on the obtained motion data, and calculating a moving distance of the indoor bicycle by using the calculated change in the angle of the pedal; And
Including the step of providing virtual reality content on which the indoor bicycle is running based on the calculated moving distance,
In the calculating step,
Extracting the pitch value, which is the Y-axis angle included in the obtained motion data,
A method for supporting indoor bicycle exercise by calculating a change in an angle of the pedal using an angle conversion table in which a pitch value for each pedal angle is defined based on a change in the extracted pitch value over time. delete

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