KR102095496B1 - An apparatus of motion sensing for control of virtual reality character - Google Patents

Abstract

A virtual reality (VR) motion detection device for controlling movement of a character is provided. The movement detection device is provided on a plate-like support capable of contacting a user's foot, a lower portion of the plate-like support, and a cushion portion that allows the plate-like support to have vertical displacement, and is provided on the plate-like support to physically support the plate-like support And a control unit generating a control command for movement of the virtual reality character based on a detection sensor capable of detecting a change and an output signal of the detection sensor. Therefore, it is possible to manufacture at a low cost, and it is possible to significantly reduce the frequency of failure occurrence, and to induce a high training effect when applied to a military training simulator.

Description

Movement detection device for movement control of virtual reality character {AN APPARATUS OF MOTION SENSING FOR CONTROL OF VIRTUAL REALITY CHARACTER}

The present invention relates to a motion detection device, and more particularly, to a motion detection device and a signal processing method for controlling the movement of a character existing in virtual reality.

The virtual reality system is a high technology-intensive system that allows people to enjoy the facilities pioneered and constructed online by combining online and offline without restrictions.

In other words, most of the races, games, military equipment, and recreational facilities of resorts that are realized in reality are programmed into a system in a virtual space, and the virtual system is realized in reality in a programmed state. In addition, it is to perform sports such as racing or competition in a more free state by deviating from temporal or spatial constraints such as enormous budget, environmental destruction, and regional restrictions.

Such a virtual reality system includes a display device that visually displays a virtual reality to a user, a platform installed in front of the display device, and a platform that allows a user to experience a moving situation while walking or running in the virtual reality, and detecting a user's movement And it can be composed of sensors to reflect the user's movement in real time in real time.

On the other hand, for a platform for controlling the movement of a character located in a virtual reality environment, for example, a structure such as 'a virtual reality walking experience system and method using an omni-directional floor (Registration No. 1439175)' has been disclosed. . In addition, a structure in the form of a treadmill or a structure for multi-directional control further developed it is used for controlling movement of a character in virtual reality.

However, the platforms for the conventional movement control as described above may have a large size of the platform due to its complex structure, and may have a great difficulty in maintenance when a failure occurs. In addition, there is a problem in that an entry barrier for constructing a virtual reality system is formed high due to high cost consumption of a platform for controlling movement of a virtual reality character.

On the other hand, virtual reality technology is widely applied to the field of military training simulators, and in the case of military training simulators, it is also an important design factor that not only implements realistic virtual reality but also gives the simulator user a practical training effect. That is, when a military training simulator trainer uses a military training simulator through virtual reality, it is important to actually perform physical movement so that it has the same exercise effect as performing actual training.

Korean Registered Patent No. 1439175 (Announcement on September 17, 2014)

The object of the present invention for solving the above-mentioned problems is to have a concise structure that can be produced at low cost and can significantly reduce the frequency of occurrence of failures. It is to provide a motion detection device for identifying motion.

Another object of the present invention for solving the above-described problem is to have a concise structure, but by performing appropriate signal processing, it is possible to more accurately detect the user's movement and distinguish and control the running movement and the walking movement, virtual reality. It is to provide a motion detection device that identifies a user's movement in order to control the movement of a character existing in the environment.

In addition, another object of the present invention for solving the above-mentioned problems, when applied to a military training simulator, the virtual reality system user can cause a high training effect by causing the user to perform a substantial physical movement, the character present in the virtual reality environment It is to provide a motion detection device for identifying the user's movement to control the movement of the.

However, the problem to be solved of the present invention is not limited to this, and may be variously extended without departing from the spirit and scope of the present invention.

A motion detection device for controlling movement of a virtual reality (VR) character according to an embodiment of the present invention for achieving the above object is provided on a plate-like support that can contact a user's foot, and the plate-like support It may include a control unit for generating a control command for the movement of the virtual reality character based on the output signal of the detection sensor and the detection sensor to detect the physical change of the plate-like support.

According to one aspect, it is disposed under the plate-shaped support, it may further include a cushion portion for the plate-shaped support to have a vertical displacement.

According to an aspect, the control unit calculates a size indication value for the output signal of the detection sensor, calculates a cumulative value during a predetermined time interval for the size indication value, and the accumulated value is a predetermined threshold value The control command may be generated in response to the determination that the above is abnormal.

Here, the size display value may be, for example, a square mean square root (RMS) value.

According to one aspect, the control unit may apply at least one of a high pass filter and a low pass filter to the output signal of the detection sensor before calculating the size indication value.

According to an aspect, the motion detection device for controlling movement of the virtual reality character operates in one of a motion start detection priority mode and a motion stop detection priority mode, and a threshold value in the motion start detection priority mode is the operation stop It may be determined to have a value smaller than a threshold in the detection priority mode.

According to one aspect, the sensing sensor may include at least one of an acceleration sensor, an inertial sensor, an IMU sensor, and a load cell.

According to one aspect, a contact sensor may be further provided to determine whether the user's foot is in contact with the plate-like support.

According to one aspect, the control unit determines that there is a time point in which at least one user's foot touches the plate-like support during a predetermined time period and a time point when no user's foot touches the plate-like support and the accumulated value is set in advance. A run control command for the virtual reality character may be generated in response to the determination that it is equal to or greater than the determined threshold value.

According to one aspect, the controller, in response to a determination that at least one foot of the user is in contact with the plate support during a predetermined time period and the cumulative value is greater than or equal to a predetermined threshold, issues a control command to walk the virtual reality character. Can be created.

According to one aspect, the contact sensor may detect the number of the user's feet in contact with the plate-like support.

According to one aspect, the touch sensor includes a plurality of button-type switch elements arranged at predetermined intervals, and when the number of activated button-type switch elements is less than or equal to a first value, no user's foot touches the plate-like support. Can decide.

According to one aspect, the touch sensor includes a plurality of button-type switch elements arranged at predetermined intervals, and when the number of activated button-type switch elements is greater than or equal to the first value or less than a second value, one user's foot is You can decide to touch the plate support.

According to one aspect, the touch sensor includes a plurality of button-type switch elements arranged at predetermined intervals, and when the number of activated button-type switch elements is greater than or equal to the second value, the user's feet touch the plate-like support. Can decide.

According to one aspect, the controller may generate a walking control command for the character in response to a determination that the accumulated value is greater than or equal to a predetermined walking threshold or less than a running threshold.

According to one aspect, the controller may generate a run control command for the character in response to a determination that the accumulated value is equal to or greater than the run threshold.

According to one aspect, the plate-shaped support may further include a plurality of load cells respectively disposed at different positions in the horizontal direction.

According to one aspect, the controller, in response to determining that the accumulated value is less than the predetermined threshold and determining that the load is concentrated in one of the plurality of load cells, the load cell direction in which the load is concentrated on the character You can create a command to control walking.

The disclosed technology can have the following effects. However, since the specific embodiment does not mean to include all of the following effects or only the following effects, the scope of rights of the disclosed technology should not be understood as being limited thereby.

According to the motion detection device for controlling movement of the virtual reality character according to the above-described embodiment of the present invention, it is possible to implement a motion detection device having a much more concise mechanical structure than a complex structure such as a conventional treadmill, and thus it can be manufactured at low cost. Of course, it is possible to significantly reduce the frequency of failures.

Further, while having a concise mechanical structure, it is possible to accurately detect a user's movement by performing appropriate signal processing on a signal generated by the motion detection device. Therefore, it is possible to create a distinct control command that controls the virtual reality character to walk or controls the user to walk by distinguishing the user from the running motion and the walking motion.

Furthermore, by controlling the virtual reality character based on the actual physical movement of the user, it is possible to allow the virtual reality system user to experience a high training effect close to performing the reality training when applied to the military training simulator. .

1 is a conceptual diagram of a movement detection device for controlling movement of a virtual reality character according to an embodiment of the present invention.
FIG. 2 is a side view of the movement detection device of FIG. 1.
3 is a side view of a motion sensing device according to another embodiment of the present invention.
4 is an exemplary diagram of time-series measurement results for the output of a sensing sensor.
5 is an exemplary view of a time series measurement result of a cumulative value of a square root mean square (RMS) value of the output signal of FIG. 4.
FIG. 6 shows the change in response delay for the upward adjustment of the threshold value in FIG. 5.
FIG. 7 shows the change in response delay for downward adjustment of the threshold of FIG. 5.
8A is an exemplary view of a touch sensor provided in a movement sensing device according to an embodiment of the present invention.
FIG. 8B shows a switch change when two feet are in contact with the contact sensor of FIG. 8A.
8C shows the operation status of the contact sensor of FIG. 8B.
FIG. 8D shows a switch change when one foot is contacted with the contact sensor of FIG. 8A.
8E shows the operation status of the contact sensor of FIG. 8D.
9 is a flowchart illustrating a procedure for generating a control command of a movement detection device for movement control of a virtual reality character according to an embodiment of the present invention.
10 is a detailed flowchart of a procedure for generating a walk / run command according to an embodiment.
11 is a detailed flowchart of a procedure for generating a walk / run command according to another embodiment.
12 is an exemplary view of a movement detection device equipped with a load cell for controlling the movement direction.

The present invention can be applied to various changes and can have various embodiments, and specific embodiments will be illustrated in the drawings and described in detail.

However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

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

When an element is said to be "connected" or "connected" to another component, it is understood that other components may be directly connected to or connected to the other component, but other components may exist in the middle. It should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that no other component exists in the middle.

The terms used in this 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 this application, the terms "include" or "have" are intended to indicate the presence of features, numbers, steps, actions, components, parts or combinations thereof described herein, one or more other features. It should be understood that the existence or addition possibilities of fields or numbers, steps, operations, components, parts or combinations thereof are not excluded in advance.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person skilled in the art to which the present invention pertains. Terms, such as those defined in a commonly used dictionary, should be interpreted as having meanings consistent with meanings in the context of related technologies, and should not be interpreted as ideal or excessively formal meanings unless explicitly defined in the present application. Does not.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In order to facilitate the overall understanding in describing the present invention, the same reference numerals are used for the same components in the drawings, and duplicate descriptions for the same components are omitted.

Movement detection device for movement control of virtual reality characters

1 is a conceptual diagram of a motion detection device for controlling movement of a virtual reality (VR) character according to an embodiment of the present invention. Hereinafter, a motion detection device for controlling movement of a virtual reality character according to an embodiment of the present invention will be described in detail with reference to FIG. 1.

As shown in FIG. 1, the movement detection device 100 for controlling movement of a virtual reality character according to an embodiment of the present invention includes a plate-shaped support 110, a cushion unit 120, and a detection sensor 130 can do.

The plate-like support 110 contacts the user's foot to support the user. Preferably, the plate-like support 110 has a size sufficient to stably support the user, but the deviation of the sensing result according to the contact position of the user's foot and the plate-like support 110 is excessive even with one detection sensor 130 It may be set not to have an excessively large size so as not to be too large. For example, the plate-shaped support 110 may have a square upper surface having a size of 30 cm × 30 cm. However, the size and shape of the plate-like support 110 is not limited to the above exemplary standards, and may be modified to any shape and size that can support the user.

According to one embodiment, the plate-like support 110 may be formed to a size capable of supporting the user even when the user takes a posture other than a standing posture, such as a crawling pose or a prone pose. When the user's limb is configured to detect the user's movement in a state where the user's limb is in contact with the plate-like support 110, such as a user's crawling position or a prone position, the plurality of detection sensors 130 are positioned in different horizontal positions of the plate-like support 110. Can be placed on each.

The cushion part 120 is disposed under the plate-shaped support 130 and allows the plate-shaped support to have a vertical displacement. 2 is a side view of the motion detection device of FIG. 1, and FIG. 3 is a side view of the motion detection device according to another embodiment of the present invention. As illustrated in FIG. 2, the cushion portion 120 may be formed to support the entire lower portion of the plate-shaped support 110, and may be formed to support a lower portion of the plate-shaped support 110 as illustrated in FIG. 3. It might be. The plate-like support 110 may be made of a material such as wood or reinforced plastic so that the user can feel a sense of stability, and the cushion portion 120 has a predetermined thickness under the plate-like support 110. By being formed to be, the plate-like support 110 having rigidity serves to move within a predetermined distance according to the user's movement. However, the vertical displacement of the plate-like support 110 is limited to within a predetermined distance so that the user does not feel anxious, and preferably the vertical displacement within 0.5 cm distance can be limited. The range of the vertical displacement is to adjust at least one or more of the material of the cushion portion 120, the thickness of the cushion portion 120, and whether the cushion portion 120 supports all or part of the lower portion of the plate-like support 110. It can be controlled by, such a cushion unit 120 may be omitted when sufficient sensor detection is made according to the material of the plate-like support.

The detection sensor 130 is provided on the plate-like support 110 to detect a physical change of the plate-like support 110. 2 and 3, the sensing sensor 130 may be disposed to form a recess in the center of the lower surface of the plate-shaped support 110 and to be inserted into the recess. Accordingly, it is possible to prevent damage due to contact with the user's foot or damage due to contact with the ground below the movement detection device.

Considering the economic aspect of the movement detection device configuration or the maintenance aspect due to failure, it may be preferable that one detection sensor 130 is provided on the plate-like support 110. However, a plurality of detection sensors 130 may be provided according to the size of the plate-shaped support 110 or the field of application of the movement detection device. According to an embodiment, the three detection sensors 130 may be disposed on the plate-like support 110 so as to form each vertex of an equilateral triangle, and at this time, an average value of the output signals of the three detection sensors 130 may be controlled. It can be used as a sensor output signal for.

Here, the sensing sensor 130 may include at least one of an acceleration sensor, an inertial sensor, an IMU sensor, and a load cell, and may be implemented as an arbitrary sensor capable of detecting the occurrence of displacement in the vertical direction of the plate-like support 110. You can. If only the displacement in the vertical direction is detected, a one-axis acceleration sensor may be used to reduce cost.

According to one aspect, the detection sensor 130 may be a displacement detection sensor for detecting a vertical displacement of the plate-shaped support 110.

Meanwhile, the movement detection device 100 for controlling movement of a virtual reality character according to an embodiment of the present invention may further include a control unit (not shown). The control unit generates a control command for the movement of the character located in the virtual reality based on the output signal of the detection sensor 130. Here, the control unit may be a processor provided with the plate-shaped support 110, the cushion unit 120, and the sensing sensor 130, and a separately provided computing device may be used. That is, the control unit may be manufactured as a small processor that processes the output signal from the detection sensor 130, or may have the form of a software module implemented on a ready-made computing device. Here, the computing device may be a portable computing device including a smartphone, a PDA, and a tablet PC, as well as a fixed computing device such as a personal computer, game console, set-top box. The control unit may be an entity that implements virtual reality, or the control unit may transmit a control command to an entity that implements virtual reality, and the entity may control movement of a character located in the virtual reality according to the generated control command.

Control Command Generation Procedure

4 is an exemplary diagram of time-series measurement results for the output of a sensing sensor. When the user of the virtual reality system moves on the plate-like support 110 using the movement detection device, the output signal of the detection sensor 130 may have a form as shown in FIG. 4. That is, according to the user's movement, the displacement of the plate-like support 110 may alternately appear downward and upward, and may include fine vibration and noise of high-frequency components at each time point.

The control unit generates a control command for moving the character located in the virtual reality based on the output signal of the sensor. 9 is a flowchart illustrating a procedure for generating a control command of a movement detection device for movement control of a virtual reality character according to an embodiment of the present invention, and a method for a control unit to generate a control command of the movement detection device with reference to FIG. 9 below Will be described in more detail.

As illustrated in FIG. 9, the controller may first sense the output signal from the detection sensor 130 as illustrated in FIG. 4 (step 910). At least one of a high pass filter and a low pass filter may be applied to the output signal of the sensed sensor 130. By properly removing the high-frequency component and the low-frequency component, it is possible to improve the detection accuracy of the user's movement and alleviate the detection delay.

Thereafter, the control unit may calculate a size display value for the output signal of the detection sensor (step 920), and may calculate a cumulative value for a predetermined time period for the size display value (step 930). The output of the detection sensor is a value having a negative and positive sign, and the magnitude display value may mean a value capable of indicating the magnitude of the output signal regardless of the magnitude of the negative and positive output signals. As the size indication value, a root mean square (RMS) value may be used. In addition to the RMS value, a value corresponding to the RMS value may be used, but for convenience of description, the RMS value is exemplified and described.

5 is an exemplary view of a time series measurement result of a cumulative value of a square root mean square (RMS) value of the output signal of FIG. 4. As shown in FIG. 5, after calculating the RMS value for each time point for the output signal of FIG. 4, each RMS value for a predetermined time period (for example, 0.5 second) for a predetermined time period By calculating the cumulative value of them, a peak is reached after a rise for a certain period of time after the user's start of exercise, and a fluctuation within a predetermined amplitude is repeated.

The control unit causes the character located in the virtual reality to move in response to the determination that the accumulated value during the predetermined time interval for the RMS value of the output signal as shown in FIG. 5 is greater than or equal to the predetermined threshold (T _m ). A control command may be generated (step 940). Such a threshold value (T _m ), when the motion detection device according to an embodiment of the present invention is applied to a virtual reality system that is a military training simulator, a trainee who uses the virtual reality system has a certain strength to move a character in virtual reality. It can be determined to cause a high training effect by performing the above practical physical movement.

On the other hand, it is important to reduce the delay time for detecting when the user initiates the exercise, since the delay for the user's motion start detection and the user's motion stop detection delay may be changed according to the threshold setting. The threshold may be adjusted in consideration of the case and the case where it is important to reduce the delay time for detecting when the user stops exercising.

FIG. 6 shows the change in response delay for the upward adjustment of the threshold value in FIG. 5. 6, the previous threshold value (T _m) when set threshold (T _a) elevated with a larger value for, previous threshold to detecting the start of the user movement from (T _m) In comparison, the detection delay time increases by a predetermined time (D _a1 ). On the other hand, the detection delay time is reduced by a predetermined time (D _a2 ) compared to detecting the user's movement stop at the previous threshold value T _m .

FIG. 7 shows the change in response delay for downward adjustment of the threshold of FIG. 5. 7, the previous threshold value (T _m) when set threshold (T _b) lowered with a smaller value for, previous threshold to detecting the start of the user movement from (T _m) In comparison, the detection delay time is reduced by a predetermined time (D _b1 ). On the other hand, the detection delay time is increased by a predetermined time (D _b2 ) compared to detecting the user's movement stoppage at the previous threshold value T _m .

Therefore, if it is important to reduce the delay time for detecting when the user starts exercising, it can be set to have a relatively small threshold, and the delay for detecting when the user stops exercising is reduced. If it is important to do so, it can be set to have a relatively large threshold.

The motion detection device for controlling movement of a virtual reality character according to an embodiment may be configured to operate in one of a motion start detection priority mode and a motion stop detection priority mode according to a user's selection, and in a motion start detection priority mode The threshold value may be set to have a value smaller than the threshold value in the operation interruption detection priority mode.

On the other hand, without changing the threshold, the delay time may be changed by multiplying the accumulated value of the RMS by a predetermined real number. That is, without changing the original threshold (T _m ), for example, by using an amplifier to multiply the accumulated value of RMS by a real number exceeding 1, it is possible to shorten the detection time delay for starting the exercise, The detection delay time for stopping the exercise can be increased. On the other hand, without changing the original threshold value (T _m ), when processing by multiplying the real value of RMS by a real number less than 1, it is possible to increase the detection time delay for starting the exercise, and the detection delay time for stopping the exercise Can be reduced.

Accordingly, the motion detection device for controlling movement of a virtual reality character according to an embodiment may be configured to operate in any one of a motion start detection priority mode, a normal mode, and a motion stop detection priority mode according to a user's selection, and the motion start In the detection priority mode, the RMS accumulated value processed by the controller may be multiplied by a real number exceeding 1, and in the operation interruption detection priority mode, the RMS accumulated value may be multiplied by a real number less than 1.

On the other hand, by multiplying the RMS cumulative value and the threshold by the same real number, the training intensity can be adjusted without causing a change in the detection delay time. That is, the RMS cumulative value and the threshold value are multiplied by the same real number greater than 1, so that the control command can be generated only for the more intense movement of the user, and the RMS cumulative value and the threshold value are multiplied by the real number less than 1, so that the user further It is possible to generate a control command even when exercising at a low intensity.

According to one aspect, in order to reduce both the delay for the detection of the start of the exercise and the delay for the detection of the stop of the exercise, the setting may be changed to detect the detection delay time of the stop of the exercise after a predetermined time has elapsed since the detection time of the start of the exercise. You can. That is, the threshold may be increased when a predetermined time has elapsed since the start time of the exercise start, or if the predetermined time has elapsed since the start time of the exercise start, the accumulated RMS value may be multiplied and processed by a real number less than one.

Creation of walk / run control commands

According to the motion detection device for controlling the movement of a virtual reality character according to an embodiment of the present invention, the user's motion is more accurately detected by performing appropriate signal processing while having a concise structure, thereby distinguishing the running motion from the walking motion It is possible to control.

The control unit of the movement detection device for controlling movement of the virtual reality character according to an embodiment of the present invention may generate a control command for movement of the character located in the virtual reality based on the output signal from the detection sensor 130. Here, the control command may include a walking control command and a run control command for the character.

(First Example)

10 is a detailed flowchart of a procedure for generating a walk / run command according to an embodiment. As shown in FIG. 10, the controller senses the output signal from the detection sensor 130 in the same manner as described above, obtains RMS values for each time point, and calculates cumulative values for RMS values during a predetermined time period. Can be calculated. Here, it is determined whether the accumulated RMS value is greater than or equal to the threshold (step 1010), and if it is determined that the accumulated RMS value is greater than or equal to the threshold, it may be determined to generate a control command. However, even when the cumulative RMS value is greater than or equal to the threshold, it may be determined whether there is a time when the user's two feet fall off the plate support 110 within a first time period after the detection of the user's exercise start (step 1020), It is possible to control the character located in the virtual reality to run by generating a run control command only when both feet of the user are dropped (step 1030).

Whether the trainer runs or walks can be determined by whether the two feet of the trainer fall off the ground. In the stationary state, both feet come into contact with the ground, and when walking starts, the state where one foot is in contact with the one foot, the state in which both feet are in contact, and the state in which one foot is in contact can be repeated. Subsequently, when the trainer starts to run, the state where one of the trainer's feet touches the ground, the state where both of the trainer's feet are off the ground, and the state where the other of the trainer's feet touch the ground can be repeated, and both of the trainer's feet are on the ground. A very short closing point may also be included. That is, whether or not the trainer runs, there is a time when at least one foot of the trainer touches the ground and when both of the trainer's feet fall off the ground, while a predetermined first time interval has elapsed since the trainer started exercising. You can decide whether or not.

Accordingly, in the movement detection device for controlling movement of the virtual reality character according to an embodiment of the present invention, the control unit enables the sensing unit to sense whether the user's foot is in contact with the plate-like support, thereby allowing the user to If both the time when at least one foot touches the plate-like support 110 and the time when no user's foot touches the plate-like support, it can be determined that the user is running.

That is, the control unit i) determines that there are both a time when at least one user's foot touches the plate-like support 110 and a time when no user's foot touches the plate-like support during a predetermined first time period and ii) a cumulative value When all of the determinations above the predetermined threshold are satisfied, it is possible to generate a run control command for the virtual reality character.

Meanwhile, referring to FIG. 10 again, if both feet of the user are not separated, a walking control command may be generated (step 1040) to control the character located in the virtual reality to walk. As described above, when the user walks, at least one foot of the user comes into contact with the ground, so that the control unit i) detects at least one foot of the user in contact with the plate support 110 during a predetermined first time period and ii) detection In response to the determination that the accumulated value of the RMS value for the output signal of the sensor 130 over a predetermined time is equal to or greater than a predetermined threshold, a walking control command for the virtual reality character may be generated.

In order to generate a walk / run control command according to whether the user's foot is touched as described above, the motion detection device for controlling the movement of the virtual reality character according to an embodiment of the present invention touches the user's foot on the plate-like support 110. It may further include a contact sensor for determining whether or not. Furthermore, such a contact sensor may be configured to detect the number of feet of a user contacting the plate-like support 110.

According to one aspect, the touch sensor may be a touch panel capable of detecting multi-touch. As the touch panel, any type of touch panel including a capacitive type and a resistive film type may be used, but a sensing sensor 130 for detecting a vertical displacement is provided, and the plate-shaped support 110 performs vertical movement. Considering the point, a capacitive touch panel having less sensitivity to decompression may be used. According to another aspect, the contact sensor may be a magnetic sensor, or may be provided with a magnet in a user's shoe.

On the other hand, according to one aspect, the contact sensor may be composed of a plurality of button-type switch elements arranged at predetermined intervals. 8A is an exemplary view of a touch sensor provided in a movement sensing device according to an embodiment of the present invention. 8A, a contact sensor may be implemented with a plurality of button-type switch elements 111 arranged at regular horizontal and vertical intervals on the upper surface of the plate-shaped support 110.

FIG. 8B shows the change of the switch when two feet are in contact with the contact sensor of FIG. 8A, and FIG. 8C shows the operation status of the contact sensor of FIG. 8B. As shown in Figure 8b, when the user's feet are in contact with the plate-like support 110, the switch elements are divided into a predetermined number of activated button-type switch element (111a) and inactive button-type switch element (111b). You can. Referring to Figure 8c, the activated button-type switch element 111a is shown in black and the inactivated button-type switch element 111b is shown in white.

FIG. 8D shows a switch change when one foot is in contact with the contact sensor of FIG. 8A, and FIG. 8E shows the operation status of the contact sensor of FIG. 8D. As shown in FIG. 8D, when one user's foot is in contact with the plate-like support 110, the switch elements are divided into a predetermined number of activated button-type switch elements 111a and inactive button-type switch elements 111b. You can. Referring to FIG. 8E, the activated button-type switch element 111a is shown in black and the inactivated button-type switch element 111b is shown in white.

In this way, among a plurality of button-type switch elements, whether a user's foot touches the plate-like support 110 by setting a threshold value for the number of activated button-type switch elements, or the user's two feet are plate-like support 110 It can be determined whether or not the contact.

That is, the touch sensor includes a plurality of button-type switch elements 111 disposed at predetermined intervals, and when the number of activated button-type switch elements 111a is equal to or less than the first value, any foot of the user is attached to the plate-like support 110. You can decide not to touch. The first value may be set to 1/2 of the number of button-type switch elements when a user's foot as shown in FIG. 8D is touched, for example.

On the other hand, the touch sensor includes a plurality of button-type switch elements 111 arranged at predetermined intervals, but when the number of operated button-type switch elements is greater than or equal to a first value or less than a second value, one user's foot is a plate-like support 110 ). The second value may be set, for example, to 3/2 of the number of button-type switch elements when a user's foot as shown in FIG. 8D is touched.

In addition, the touch sensor includes a plurality of button-type switch elements 111 disposed at predetermined intervals, but when the number of activated button-type switch elements is greater than or equal to the second value, the user's feet touch the plate-like support 110. Can decide.

When a touch sensor is provided based on a plurality of button-type switch elements as described above, it is possible to detect whether a user's foot closes to the plate-like support 110 and how many feet close to the plate-like support 110 at a low cost. It is possible to have a contact sensor, and since the user does not wear equipment such as a separate dedicated shoe, it is possible to reduce the feeling of rejection while preventing loss of equipment, thereby making maintenance more convenient.

(Second example)

11 is a detailed flowchart of a procedure for generating a walk / run command according to another embodiment. As illustrated in FIG. 11, the control unit senses the output signal from the detection sensor 130 in the same manner as described above, obtains RMS values for each time point, and calculates cumulative values for RMS values during a predetermined time period. Can be calculated. Here, it is determined whether the cumulative RMS value is greater than or equal to the walking threshold (step 1110), and if it is determined that the cumulative RMS value is greater than or equal to the walking threshold, it may be determined first to generate a control command. However, even if the cumulative RMS value is greater than or equal to the walking threshold, it can be determined whether the cumulative RMS value is greater than or equal to the run threshold (step 1020), and generates a run control command only when the cumulative RMS value is greater than or equal to the run threshold (step) 1030) to control the character located in the virtual reality to jump. On the other hand, if the cumulative RMS value is greater than or equal to the walking threshold but smaller than the running threshold, a walking control command may be generated (step 1040) to control the character located in the virtual reality to walk.

That is, the controller generates a walking control command for the character in response to the determination that the cumulative RMS value is greater than or equal to the predetermined walking threshold or less than the running threshold, and runs for the character in response to the determination that the cumulative RMS value is greater than or equal to the running threshold. It can be configured to generate control commands.

Movement direction control

According to one embodiment, in order to control the movement direction of the character located in the virtual reality, in addition to the movement detection device for controlling movement of the virtual reality character according to an embodiment of the present invention, a joystick (eg, an 8-way joystick) is added. By providing as can allow the user to control the direction in which the character located in the virtual reality moves.

According to one aspect, the movement direction of the character can also be controlled by the interaction of the user's foot and the plate-like support 110. 12 is an exemplary view of a movement detection device equipped with a load cell for controlling the movement direction. As illustrated in FIG. 12, the movement detection device according to an embodiment of the present invention includes a plurality of load cells 135-1, 135-2 and 135-respectively disposed at different positions in the horizontal direction of the plate-shaped support 110. 3, 135-4, 135-5, 135-6, 135-7, 135-8). According to one aspect, the plate-like support 130 may further include partial plate-like supports corresponding to each of the plurality of load cells, and each load cell corresponding to the load of each of the partial plate-like supports may sense. have.

As described above with reference to FIG. 9, the control unit senses the output signal from the detection sensor 130 to obtain RMS values for each time point and calculates cumulative values for RMS values for a predetermined time period. Here, as a result of determining whether the cumulative RMS value is greater than or equal to the threshold, it is determined that the cumulative RMS value is less than the threshold value, and a plurality of load cells 135-1, 135-2, 135-3, 135-4, 135-5 , 135-6, 135-7, 135-8) may generate a walking control command to cause the character to walk in a direction indicated by the load cell where the load is concentrated, in response to the determination that the load is concentrated. .

In this case, it is determined that the cumulative RMS value is above the threshold and a plurality of load cells (135-1, 135-2, 135-3, 135-4, 135-5, 135-6, 135-7, 135-8) In response to the determination that one of the loads is concentrated, the control unit may generate a run control command so that the character located in the virtual reality runs in the direction indicated by the load cell where the load is concentrated.

The control command generation procedure of the control unit according to the present invention described above can be implemented as a computer-readable code on a computer-readable recording medium. The computer-readable recording medium includes any type of recording medium that stores data that can be read by a computer system. For example, there may be a read only memory (ROM), a random access memory (RAM), a magnetic tape, a magnetic disk, a flash memory, and an optical data storage device. In addition, the computer-readable recording medium may be distributed over computer systems connected by a computer communication network, and stored and executed as code readable in a distributed manner.

Although described above with reference to the drawings and examples, the protection scope of the present invention is not meant to be limited by the drawings or the examples, and those skilled in the art of the present invention described in the claims below It will be understood that various modifications and changes can be made to the present invention without departing from the spirit and scope.

Specifically, the described features can be implemented in digital electronic circuitry, or computer hardware, firmware, or combinations thereof. The features can be implemented in a computer program product implemented in storage in a machine-readable storage device, eg, for execution by a programmable processor. And the features can be performed by a programmable processor executing a program of instructions for performing the functions of the described embodiments by operating on input data and generating output. The described features include at least one programmable processor, at least one input device, and at least one output device coupled to receive data and directives from a data storage system and to transmit data and directives to the data storage system. It can be executed in one or more computer programs that can be executed on a programmable system comprising a. A computer program includes a set of directives that can be used directly or indirectly within a computer to perform a specific action on a given result. A computer program is written in any form of programming language, including compiled or interpreted languages, and is included as a module, element, subroutine, or other unit suitable for use in other computer environments, or as a standalone program. Can be used in any form.

Suitable processors for the execution of the program of directives include, for example, both general purpose and special purpose microprocessors, and either a single processor or multiple processors of other types of computers. Also suitable for implementing computer program instructions and data embodying the described features are storage devices suitable for example, semiconductor memory devices such as EPROM, EEPROM, and flash memory devices, magnetic devices such as internal hard disks and removable disks. Devices, magneto-optical disks and all forms of non-volatile memory including CD-ROM and DVD-ROM disks. The processor and memory may be integrated within application-specific integrated circuits (ASICs) or added by ASICs.

Combinations of the above-described embodiments are not limited to the above-described embodiments, and various forms of combinations may be provided as well as the above-described embodiments according to implementation and / or needs.

In the above-described embodiments, the methods are described based on a flowchart as a series of steps or blocks, but the present invention is not limited to the order of steps, and some steps may occur in a different order than the steps described above or simultaneously. have. In addition, those skilled in the art may recognize that the steps shown in the flowchart are not exclusive, other steps are included, or one or more steps in the flowchart may be deleted without affecting the scope of the present invention. You will understand.

The foregoing embodiments include examples of various aspects. It is not possible to describe all possible combinations for representing various aspects, but a person skilled in the art will recognize that other combinations are possible. Accordingly, the present invention will be said to include all other replacements, modifications and changes that fall within the scope of the following claims.

Claims (16)

Virtual Reality (VR) is a movement detection device for controlling movement of characters,
A plate-like support that can contact the user's foot;
A sensing sensor provided on the plate-like support and capable of detecting a physical change in the plate-like support; And
And a control unit generating a control command for movement of the virtual reality character based on the output signal of the detection sensor,
The control unit calculates a size indication value for the output signal of the detection sensor, calculates a cumulative value during a predetermined time interval for the size indication value, and responds to a determination that the accumulation value is equal to or greater than a predetermined threshold value. To generate the control command,
The motion detection device for controlling the movement of the virtual reality character operates in one of a motion start detection priority mode and a motion stop detection priority mode, and a threshold value in the motion start detection priority mode is set in the motion stop detection priority mode. A movement detection device for controlling movement of a virtual reality character having a value smaller than a threshold value.
delete According to claim 1,
The control unit,
A motion sensing device for controlling movement of a virtual reality character, wherein at least one of a high pass filter and a low pass filter is applied to the output signal of the detection sensor before calculating the size indication value.
delete According to claim 1,
The detection sensor,
A motion sensing device for controlling movement of a virtual reality character, comprising at least one of an acceleration sensor, an inertial sensor, an IMU sensor, and a load cell.
According to claim 1,
Further comprising a contact sensor for determining whether the user's foot is in contact with the plate-like support, the movement detection device for the movement control of the virtual reality character.
The method of claim 6,
The control unit,
In the determination that at least one user's foot touches the plate support during a predetermined first time period and a time when no user's foot touches the plate support, there is a determination that the cumulative value is equal to or greater than a predetermined threshold. In response to generating a run control command for the virtual reality character, the motion detection device for the movement control of the virtual reality character.
The method of claim 6,
The control unit,
During the first predetermined time period, at least one foot of the user contacts the plate support and generates a walking control command for the virtual reality character in response to determining that the accumulated value is equal to or greater than a predetermined threshold value. Motion detection device for motion control.
The method of claim 6,
The touch sensor is a motion detection device for controlling movement of a virtual reality character, detecting the number of the user's feet in contact with the plate support.
The method of claim 9,
The touch sensor includes a plurality of button-type switch elements arranged at predetermined intervals, and determines that no user's foot touches the plate-like support when the number of activated button-type switch elements is equal to or less than a first value. A movement detection device for controlling movement of a character.
The method of claim 10,
The touch sensor includes a plurality of button-type switch elements arranged at predetermined intervals, and when the number of actuated button-type switch elements is equal to or greater than the first value and less than or equal to the second value, one user's foot contacts the plate-like support. A motion sensing device for determining movement control of a virtual reality character.
The method of claim 11,
The touch sensor includes a plurality of button-type switch elements arranged at predetermined intervals, and determines that the user's feet touch the plate-like support when the number of activated button-type switch elements is greater than or equal to the second value. A movement detection device for controlling movement of a character.
According to claim 1,
The control unit,
In response to a determination that the accumulated value is greater than or equal to a predetermined walking threshold or less than a running threshold, a movement detecting device for controlling movement of a virtual reality character, generating a walking control command for the character.
The method of claim 13,
The control unit,
A motion detection device for movement control of a virtual reality character, which generates a run control command for a character in response to determining that the accumulated value is equal to or greater than the run threshold.
According to claim 1,
Further comprising a plurality of load cells respectively disposed at different positions in the horizontal direction of the plate-like support, the motion detection device for the movement control of the virtual reality character.
The method of claim 15,
The control unit,
In response to determining that the accumulated value is less than the predetermined threshold and determining that the load is concentrated in one of the plurality of load cells, generating a walking control command in the direction of the load cell in which the load is concentrated on the character, A motion detection device for controlling movement of a virtual reality character.

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