KR102054712B1 - Apparatus for preventing player collision accident - Google Patents

Abstract

The present invention relates to a device for preventing a player in virtual reality from experiencing a collision accident and, more specifically, to a device for preventing a player in virtual reality from experiencing a collision accident, which prevents a player from colliding with a wall or with other players. For the purpose, the device for preventing a player in virtual reality from experiencing a collision accident comprises: a plurality of positioning sensor units generating position coordinates of players in order to set an activity limiting zone where each player is permitted to play; a plurality of motion control units carried or worn by each player to generate motion data for motion of each player and generating first and second position coordinates of the players in order to determine an activity safety zone for each player; a player activity safety zone determination unit receiving the first and second position coordinates to determine values of the activity safety zone for each player; a player position coordinate determination unit communicating a message for measuring a time with the positioning sensor units to select a positioning sensor unit meeting a pre-set condition, determining each value of distance to a corresponding player from the message for measuring a time of the selected positioning sensor unit, and determining current position coordinate values of a player from the determined distance value and the position coordinate value of the selected positioning sensor unit; an activity limiting zone determination unit receiving the position coordinates of the positioning sensor units to determine and set the activity limiting zone; and a collision risk determination unit determining a risk of collision with a wall or collision between players through values of the activity safety zone for a player, an activity limiting zone, and current position coordinate values for a player.

Description

Apparatus for preventing player collision accident in virtual reality environment

The present invention relates to an apparatus for preventing collision of a player in a virtual reality environment, and more particularly, to an apparatus for preventing collision of a player in a virtual reality environment that prevents a collision between a wall and a player and a collision between players.

When a large number of people simultaneously perform a game or simulation through virtual reality in a limited space, in the general virtual reality environment, it is important to avoid collision with static objects and warn the player when leaving the preset playground through the depth measuring camera. Use a method of alerting the player if a tracking loss occurs outside the sensor tracking range.

On the other hand, when a large number of people play simultaneously in the same space using virtual reality, collision avoidance with static objects can be solved by a depth measuring camera, but there is a risk of collision because it cannot predict the movement of individual players moving at every moment. There is this high problem. In addition, there is a limitation in tracking players having dynamic characteristics, so that a tracking loss occurs and therefore, there is a problem that the risk is not informed in advance even though the collision of the players is predicted.

Republic of Korea Patent Publication No. 10-1659782 (Invention name: Method of providing three-dimensional indoor spatial information from the user's point of view considering the wall collision)

Accordingly, the present invention has been made to solve the problems described above, and an object thereof is to provide an invention for preventing a collision between players or between a player and a wall.

However, the objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned will be clearly understood by those skilled in the art from the following description.

An object of the present invention described above, a plurality of positioning sensor unit for generating its own position coordinates so that the activity limit area for each player can be set, the motion data for each player's motion by the possession or wearing of each player And a plurality of motion control units for generating their first and second position coordinates and first and second position coordinates so as to calculate an active safety region of each player. A calculation unit and a time measuring message are exchanged with a plurality of positioning sensor units to select a positioning sensor unit meeting a predetermined condition, and a distance value with the player is calculated from the time measuring message of the selected positioning sensor unit, respectively, A player that calculates the player's current position coordinate value through each distance value and the position coordinate value of the selected positioning sensor unit. A position limit calculation unit, an activity limit region calculating unit for calculating and setting an activity limit region by receiving position coordinates of a plurality of positioning sensor units, and a value of a player's activity safety region, an activity limit region, and a player's current position coordinates It can be achieved by providing a collision accident prevention device of the player in a virtual reality environment comprising a collision risk calculation unit for calculating the collision risk between the wall and the player and the collision risk between the player through.

In addition, the activity limit region is set based on the wall surface inside the building or by connecting each positioning sensor unit with a virtual line based on the current position of the plurality of positioning sensor units.

In addition, each player possesses or wears a plurality of motion control units on the left and right sides, and the player active safety area calculator calculates and displays the active safety area of the player as a virtual circle based on the first and second position coordinate values.

In addition, the player position coordinate calculation unit calculates the player's current position coordinates by the following equations (2) and (3).

The collision risk calculator may include a wall collision risk calculator that calculates a collision risk between a wall and a player, and a collision risk calculator between players that calculates a collision risk between players.

In addition, the wall collision risk calculation unit first searches for collidable walls for all players, and calculates collision risk secondly for the collidable walls derived according to the first search. If a cabinet related to the positioning sensor is an acute angle among the cabinets of the virtual triangle set based on the plurality of positioning sensors, it searches for a collisionable wall surface.

In addition, the wall collision risk calculation unit calculates the collision risk by the following equation 5 for the collisionable wall surface, and determines that there is a collision risk when there is a wall surface r> c.

In addition, the collision risk calculation unit between the players calculates the collision risk between the players by the following equation (6), and determines that there is a collision risk between the first and second players when r1 + r2> d.

According to the present invention as described above there is an effect that can prevent the collision between the players or the player and the wall surface.

The following drawings, which are attached to this specification, illustrate one preferred embodiment of the present invention, and together with the detailed description thereof, serve to further understand the technical idea of the present invention. It should not be construed as limited.
FIG. 1 is a diagram illustrating a virtual limit line 11 of each player according to an embodiment of the present invention.
FIG. 2 is a diagram for calculating an active safety area of a player according to an embodiment of the present invention.
3 is a diagram illustrating a time measurement message exchanged between a position coordinate calculating unit and a positioning sensor of a player according to an exemplary embodiment of the present invention.
4 is a diagram illustrating calculating triangulation of a player's current position coordinates according to an embodiment of the present invention.
5 is a view showing the current position of each player in the activity limit area according to an embodiment of the present invention,
6 is a view showing the safety zones and the collision risk of each player according to an embodiment of the present invention,
FIG. 7 is a view illustrating a first search for a collidable wall surface according to an embodiment of the present invention.
FIG. 8 is a diagram for secondarily calculating a collision risk for a wall having a potential collision by a first search according to an embodiment of the present invention.
9 is a block diagram showing the configuration of a collision prevention device of a player in a virtual reality environment according to an embodiment of the present invention,
10 illustrates a method for calculating a collision risk according to an embodiment of the present invention,
11 illustrates a step of acquiring position coordinates of a player according to an embodiment of the present invention.
12 illustrates calculating a risk of collision between a player and a wall according to an embodiment of the present invention. However, the above-mentioned steps do not have to follow the order in the flowchart as needed.

Hereinafter, with reference to the drawings will be described a preferred embodiment of the present invention. In addition, one Example described below does not unduly limit the content of this invention described in the Claim, and the whole structure described in this Embodiment is not necessarily required as a solution of this invention. In addition, the matters obvious to those skilled in the art and the art may be omitted, and description of the omitted elements (methods) and functions may be sufficiently referred to without departing from the technical spirit of the present invention.

Device for preventing collision of players in a local multi-access virtual reality environment according to an embodiment of the present invention, a plurality of players in a virtual reality environment to exchange messages with a server or a wearing device worn by each player in multiple access It is a device that prevents wall collision or collision between players and directly performs a game or simulation through an avatar in virtual reality.

Apparatus for preventing a collision accident of a player in a local multi-access virtual reality environment according to an embodiment of the present invention is an activity limit region 11 that each player (31, ..., 35) can act as shown in FIG. ). The activity limit zone 11 is set inward with respect to the wall surface 10 inside the actual building. In other words, when the positioning sensors 110, ..., 170 are disposed along the wall 10, all the areas inside the wall will be active limit regions, and the positioning sensors 110, inside the wall 10 as shown in FIG. In the case where the ..., 170 is arranged, the line segments between the respective positioning sensors become the virtual wall surfaces 10a, ..., 10g, and the inside of the virtual wall becomes the active limit region. The activity limit region calculating unit 440 of the controller calculates the activity limit region 110 based on the arrangement position (position coordinates of the position sensor) of each positioning sensor 110,..., 170, and sets the activity limit region. do. Each positioning sensor (110, ..., 170) generates a position coordinate of its own position is disposed and transmits to the control unit (400). In addition, each positioning sensor (110, ..., 170) transmits and receives a time measurement message to the player position coordinate calculation unit 420 of the control unit in a message polling manner, so that the player position coordinate calculation unit (420) Allows you to calculate position coordinates. Each of the positioning sensors 110,..., 170 is disposed along the wall surface 10 or on the inside of the wall surface 10 in a plurality of positions corresponding to the virtual environment. However, the present invention will be described based on seven positioning sensors.

As shown in FIG. 2, the player activity safety area calculation unit 410 of the control unit calculates the activity safety area of each player, and the activity safety area as shown in FIG. 25). Since the active safety zones of the players 31, ..., 35 may be different for each player, the active safety zones are calculated and set for each player. As an example, referring to FIG. 2, the first player 31 holds the motion controls 210 and 220 in the left hand and the right hand, respectively. Motion control communicates the actual player's movements to the in-game avatar in a virtual environment, allowing the in-game avatar to move in the same way as the player moves. Each motion control 210 or 220 may generate its own position coordinates and transmit the generated position coordinates to the controller 400. The left motion control 210 generates its own position coordinates as "a1, a2, a3", and the right motion control 220 generates its own position coordinates as "b1, b2, b3". Accordingly, a radius may be obtained by the following Equation 1 based on the left motion control 210 and the right motion control 220. The player activity safety zone calculation unit 410 obtains a radius and may represent the activity safety zone 21 of the first player as a virtual circle based on the calculated radius. However, Equation 1 may be calculated based on when the first player 31 has open arms, but the weight may be applied based on when the maximum arms are opened according to the environment. will be. In addition, the radius of the active safety zones 22, ..., 25 of the second, ..., 5 players 32, ..., 35 can also be obtained by the same principle, and can be represented by a virtual circle. have.

The player position coordinate calculating unit 420 of the control unit (or the time measuring sensor unit) may transmit and receive the message time and flight time (ToF) calculated by exchanging position coordinates and time measuring messages of each positioning sensor with each positioning sensor. Triangulation is used to calculate the position coordinates of each player. Each positioning sensor (110, ..., 170) generates its own position coordinates and transmits to the player position coordinate calculation unit 420, respectively. The player position coordinate calculator 420 calculates a message transmission / reception time (ToF) by exchanging time measurement messages with each of the positioning sensors 110,..., 170. As an example, a method of calculating a distance from each positioning sensor to calculate the position coordinates of the first player will be described with reference to FIG. 3, and the player position coordinate calculating unit 420 may measure the time with the first positioning sensor unit 110. Send and receive messages. First, the player position coordinate calculation unit 420 transmits a message to the first positioning sensor 110 with its transmission time T _SP , and the first positioning sensor unit 110 records the message reception time ( T _RP ). The first positioning sensor unit 110 transmits a response message back to the player position coordinate calculating unit 420 at the time of T _SR . The player position coordinate calculator 420 records the received time T _RR and finally transmits the final message including the T _SP , T _RR , and T _SF time information to the first positioning sensor 110. The first positioning sensor 110 may record a final message reception time T _RF , and calculate a message transmission / reception time ToF based on Equation 2 based on the transmitted time information. The calculated message transmission / reception time ToF is transmitted to the player position coordinate calculator 420. In this case, the message transmission / reception time (ToF) may be calculated by the first positioning sensor 110 or by the player position coordinate calculating unit 420.

, D는 제1 측위센서와 제1 플레이어와의 상대적인 거리, c는 빛의 속도이고, T_RR은 수신 시각(Time of Receiving Response), T_SP는 poll의 송신 시각(Time of Sending Poll), T_SR은 송신 시각(Time of Sending Response), T_RP는 poll의 수신 시각(Time of Receiving poll), T_RF는 final의 수신 시각(Time of Receiving final), T_SF는 final의 송신 시각(Time of Sending Final)이다.

D is the relative distance between the first positioning sensor and the first player, c is the speed of light, T _RR is the Time of Receiving Response, T _SP is the Time of Sending Poll, T _SR is Time of Sending Response, T _RP is Time of Receiving poll, T _RF is Time of Receiving final, T _SF is Time of Sending final Final).

In this way, the relative distance between the first player and each positioning sensor may be calculated by Equation 2 by exchanging a time measurement message between the first player and each positioning sensor. Also, the second, ..., 5 players can calculate the relative distance between each positioning sensor on the same principle.

At this time, a triangulation method is used as shown in FIG. 4 to obtain the position coordinates of the first player. Since triangulation is used, three positioning sensors are selected from the seven positioning sensors 110,..., 170. That is, the player position coordinate calculation unit 420 calculates the position coordinates of the first player 31 by using the distance values D1, D2, and D3 relative to the three selected positioning sensors and Equation 3 below. . On the other hand, the player position coordinate calculation unit 420 exchanges time measurement messages with the seven positioning sensors 110, ..., 170 sequentially by the message polling method, and selects the three positioning sensors that responded first. do. Alternatively, a batch of seven time sensors can be broadcast by broadcasting a time measurement message, and the first responding sensor can be selected. The position coordinates of the second, ..., 5 players can be calculated by the same principle.

Here, (X1, Y1) and (X2, Y2) are position coordinates of the first and second positioning sensors, respectively, D1 and D2 are relative distances between the first and second positioning sensors and the player, respectively, and T is the first and second positions. Distance between positioning sensors.

The position coordinates of the player obtained by Equation 3 are two intersection points drawn using the first positioning sensor 110 and the player's distance D1, and the second positioning sensor 120 and the player's distance D2. The intersection coordinates close to D3, which is the distance to the three positioning sensors 130, become the coordinate positions of the player. In this way, the positional coordinates of the respective players are calculated using the equations (2) and (3).

When the position coordinates of each player are obtained, the controller 400 may display the current position of each player 31,..., 35 together with each positioning sensor as shown in FIG. 5. In addition, the controller 400 may display the virtual wall 11 and the active safety areas 21,..., 25 of each player as shown in FIG. 6.

As shown in FIG. 6, the collision risk calculation unit 430 derives whether the collision risk with the wall surface and the collision risk between the players are based on the active safety areas 21,..., 25 of each player. In FIG. 6, the first player 31 is in danger of colliding with the wall surface 10a, the fifth player 35 is in danger of colliding with the wall surface 10d, and the third and fourth players 33 and 34 collide with each other. It can be seen that there is a risk. The collision risk calculation unit may be divided into a wall collision risk calculation unit and a player's dispatch risk calculation unit.

There are two steps to determining the risk of collision between the wall and the player. That is, the wall collision risk calculation unit first searches for a wall surface that may possibly collide with each player and a wall, and secondly calculates and determines a wall collision risk for a wall that may be collided. As an example, as shown in FIG. 7, the wall collision risk calculation unit primarily searches for a wall surface having a possibility of collision between the first player 31 and the wall surface 10a.

The possibility of collision between the first player 31 and all of the wall surfaces 10a, ..., 10g is searched for, and the wall surfaces which may be collided are selected. In addition, for the second, ..., 5 players, the possibility of collision is searched for all the walls in order, and the potential walls are selected. Referring to FIG. 6, the first player 31 detects a possibility of collision with the wall surface 10a, and the wall collision risk calculation unit detects that the fifth player 35 may collide with the wall surface 10d. . The wall collision risk calculator uses Equation 4 below to explore the possibility of collision between the wall and the player. Referring to FIG. 7 as an example, the first positioning sensor 110, the second positioning sensor 120, and the first player 31 are positioned, and the wall surface 10a is positioned near the first player 31. have. The wall collision risk calculation unit calculates the internal angle of the first positioning sensor (∠S ₁ ) and the second positioning sensor (∠S ₂ ) by using Equation 4, and when both of the first and second positioning sensors are acute. Navigate to walls that may be in conflict. In Equation 4, a current position coordinate of the first player 31 is called Pn (p1, p2), a current position coordinate of the first positioning sensor 110 is called Sn (n1, n2), and a second position sensor ( The current position coordinate of 120 is called Sm (m1, m2). At this time, the current position coordinate of the first player 31 is calculated by the above-described equations (2) and (3).

The wall collision risk calculation unit searches for a wall that may be collided when the internal angle ∠S ₁ of the first positioning sensor and the internal angle ∠S ₂ of the second positioning sensor are derived as acute angles according to Equation 4 described above. The wall collision risk calculator calculates the collision risk secondary to the wall which may be collided after searching all the walls which may be collided.

As shown in FIG. 8, the wall collision risk calculation unit calculates a wall collision risk by using Equation 5 below for all walls that are likely to collide.

The wall collision risk calculation part determines secondarily that there is a collision risk when there is a wall with r> c. In this case, r is a radius of the active safety area of each player calculated by Equation 1, and x is a virtual vertical line perpendicular to the wall surface of the player's current position coordinates. The distance between the position coordinate and the vertical line coordinate point, and a is the distance from the player's current position coordinate to the corresponding position sensor which is a reference point of the vertical line coordinate point when a virtual vertical line is drawn perpendicular to the wall (see FIG. 8).

As described above, the wall collision risk calculation unit first searches all walls for each player and detects walls that may possibly collide with the wall, and determines whether there is a collision risk for the second wall. do. The wall collision probability search and the wall collision risk search using Equations 4 and 5 described above apply to all players 31, ..., 35 located in the activity limit region 11 on the same principle.

Meanwhile, referring to FIG. 6, the collision risk calculator between the players determines the collision risk by calculating the collision risk between the third player 33 and the fourth player 34. The collision risk calculation unit between the players calculates the collision risk between all players using Equation 6 below. At this time, the current position coordinates of the third player 33 is called P3 (a1, a2), the current position coordinates of the fourth player 34 is called P4 (b1, b2), and the activity safety of the third and fourth players. The radius of the region is called r3 and r4. The current position coordinates of the third and fourth players are calculated by Equations 2 and 3, and the radius of the third and fourth players is calculated by Equation 1, respectively.

In this case, d is the distance between the third and fourth players, and the collision risk calculator between the players determines that there is a collision risk between the third and fourth players when r3 + r4> d.

The collision risk calculation unit 430 includes a collision risk calculation unit between the wall collision risk calculation unit and the player, and if it is determined that there is a collision risk between the walls or the players, the collision risk calculation unit 430 collides with the head display unit 300 worn by all players. Inform the danger. At this time, all the players may be notified of the danger of collision, and if necessary, only the player may be notified of the danger of collision. Vision and hearing can be used as a way to signal the danger of a collision. That is, a warning phrase and a collision danger direction may be displayed on the head display unit 300, and a collision danger warning sound may be sounded.

The control unit 400 is attached or worn to the body of each player, if necessary, some functions of the control unit 400 may be in charge of a server (not shown) to manage and monitor the entire system. Therefore, the control unit 400 and the server or each component described in the present invention may be connected to a network so as to communicate with each other.

In the following description of the present invention, those skilled in the art and those skilled in the art may omit descriptions, and descriptions of such omitted components (methods) and functions may be sufficiently referred to without departing from the technical spirit of the present invention. Could be.

The description of the configuration and functions of the above-described parts have been described separately for convenience of description, and any configuration and function may be implemented by being integrated into other components, or may be further subdivided as necessary.

As mentioned above, although demonstrated with reference to one Embodiment of this invention, this invention is not limited to this, A various deformation | transformation and an application are possible. That is, those skilled in the art will readily appreciate that many modifications are possible without departing from the spirit of the invention. In addition, when it is determined that the detailed description of the known function and its configuration or the coupling relationship for each configuration of the present invention may unnecessarily obscure the subject matter of the present invention, it should be noted that the detailed description is omitted. something to do.

10,10a, 10b, 10c, 10d, 10e, 10f, 10g: wall surface
11: Activity limit area
21, ..., 25: First, ..., 5 Active Safety Area
31, ..., 35: 1st, ..., 5 players
100: positioning sensor unit
110, ..., 170: 1st, ..., 7 position sensor part
200: motion control unit (player position reference unit)
210: left motion control unit (first motion control unit)
220: right motion control unit (second motion control unit)
300: Head Mounted Display
400: control unit
410: player activity safety area calculation unit
420: player position coordinate calculation unit (time measurement sensor)
430: collision risk calculation unit
440: activity limit area calculation unit

Claims (8)

A plurality of positioning sensor units which generate their own position coordinates so that an activity limit region for each player can be set;
A plurality of motion control units for generating motion data of each player's motion by carrying or wearing each player, and generating first and second position coordinates of the player so that an active safety area of each player is calculated;
A player activity safety area calculation unit configured to receive the first and second position coordinates and calculate a player's activity safety area value;
Sending and receiving a time-measurement message with the plurality of positioning sensor units, selecting a positioning sensor unit meeting a predetermined condition, calculating distance values with the corresponding player from the time-measuring message for the selected positioning sensor unit, respectively, A player position coordinate calculator for calculating a current position coordinate value of the player through a distance value and a position coordinate value of the selected position sensor unit;
An active limit region calculating unit configured to receive position coordinates of the plurality of positioning sensor units to calculate and set the active limit region;
It includes a collision risk calculation unit for calculating the risk of collision between the wall and the player and the collision risk between the player through the value of the active safety area of the player, the activity limit area, and the current position coordinates of the player,
The collision risk calculation unit,
Wall collision risk calculation unit for calculating the collision risk between the wall and the player, and
A collision risk calculation unit for calculating collision risk between players,
The wall collision risk calculation unit,
Primary search for colliding walls for all players,
Secondly, the collision risk is calculated for the collidable wall surface derived according to the first search, and the cabinet related to the positioning sensor is one of the virtual triangle cabinets set based on the player and the plurality of positioning sensors selected based on the player. The collision prevention device of the player in a virtual reality environment, characterized in that for exploring the collisionable wall surface.
The method of claim 1,
The activity limit area is,
An apparatus for preventing a collision of a player in a virtual reality environment, wherein the positioning sensor units are set based on a wall surface inside a building or connected to each of the positioning sensor units based on a current position of the plurality of positioning sensor units.
The method of claim 1,
Each player carries or wears the plurality of motion control parts on the left and right sides,
The player activity safety area calculation unit,
An apparatus for preventing a collision of a player in a virtual reality environment, wherein the active safety area of the player is calculated and displayed based on the first and second position coordinate values.
The method of claim 1,
The player position coordinate calculation unit,
An apparatus for preventing a collision of a player in a virtual reality environment, wherein the current position coordinates of the player are calculated by the following equation.
[Equation]

here,

, D is the relative distance between the positioning sensor and the player, c is the speed of light, T _RR is the Time of Receiving Response, T _SP is the Time of Sending Poll, and T _SR is the sending time ( Time of Sending Response), T _RP is the Time of Receiving poll, T _RF is the Time of Receiving final, T _SF is the Time of Sending Final
[Equation]

Here, (X1, Y1) and (X2, Y2) are position coordinates of the first and second positioning sensors, respectively, D1 and D2 are relative distances between the first and second positioning sensors and the player, respectively, and T is the first and second positioning. Distance between sensors
delete delete The method of claim 1,
The wall collision risk calculation unit,
The collision risk is calculated for the colliding wall surface by the following equation, and when there is a wall surface r> c, it is determined that there is a risk of collision.
[Equation]

Where r is the radius of the player's active safety area, x is the distance from the position coordinate of any one of the positioning sensors to the vertical coordinate point when a virtual vertical line is drawn perpendicular to the wall from the player's current position coordinate, a Is the distance from the player's current position coordinate to the corresponding positioning sensor that is the reference point of the vertical line when an imaginary vertical line is drawn perpendicular to the wall.
The method of claim 1,
The collision risk calculation unit between the players,
The collision risk between the players is calculated by the following equation, and when r1 + r2> d, it is determined that there is a risk of collision between the first and second players.
[Equation]

Where d is the distance between the first and second players, the current position coordinate of the first player is (a1, a2), the current position coordinate of the second player is (b1, b2), and r1 is the activity of the first player. The radius of the safe zone, r2 is the radius of the active safe zone of the second player.

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