TWM549870U - Virtual reality system and position detection module thereof - Google Patents

Abstract

A virtual reality (VR) system includes a position detection module. The position detection module is applied to real-timely detect a device position of a portable VR device, in which the portable VR device is carried by the user and operated in an operation space. The position detection module includes a first transceiving antenna, a second transceiving antenna, an inertial measurement unit (IMU) and a processing unit. The first transceiving antenna scans the operation space to build up a space model. The second transceiving antenna and the IMU are configured together with the portable VR device. The processing uint obtains an antenna relative position between the first and the second transceiving antennas, and further obtains a device orientation detected by the IUM, so as to define the device position according to the space model, the antenna relative position and the device orientation.

Description

Virtual reality system and its orientation detection module

This creation is about a virtual reality system, especially a virtual reality system with a position detection module.

Since Virtual Reality (VR) technology requires interaction between users and contexts, positioning technology is needed to instantly detect the location of the user or all or part of the user's body. The trajectory is based on which the corresponding context changes are generated. However, in the current VR positioning technology, when it is used in an indoor operation space, it is often necessary to find a higher and more spacious indoor operation space, and then set a bit signal at at least two corners in the indoor operation space. The base station is sent and received, and the scanning range of the positioning signal receiving and transmitting base station can completely cover the entire indoor operating space. Moreover, in order to enable the positioning signal transmitting and receiving base station to operate for a long time, it is often inconvenient to set the positioning signal transmitting and receiving base station at a position adjacent to the power socket.

One aspect of the present invention is an orientation detection module for detecting a device orientation of a virtual reality portable device in an operation space, including a first transmission end antenna, electrically connected to the computing host, and used for operation The space sends the scan signal along a plurality of signal transmission directions to receive the reflected signal reflected from the boundary of the operation space, thereby establishing a spatial model of the operation space; the second transmission end antenna is electrically connected to the virtual reality portable device, and When the first transmitting end antenna transmits the scanning signal, the scanning signal is received along a plurality of signal receiving directions, and a plurality of signal intensity data corresponding to the signal sending direction and the signal receiving direction are transmitted; the inertial measurement unit (IMU) And the virtual reality portable device is configured to detect the pointing device of the virtual reality portable device to transmit the device pointing signal; and the computing unit is communicably connected to the first transmitting end antenna and the second transmitting end by the computing host An antenna and an inertial measurement unit for relying on a signal corresponding to a signal transmission direction and a signal reception direction The data is subjected to beam-forming operation to calculate the relative position of the antenna of the second transmitting end antenna relative to the first transmitting end antenna in the operating space, and is used for receiving the pointing signal of the device, so that the space model and the antenna are relatively The position and device point to define the device orientation.

Another aspect of the present invention is a virtual reality system, comprising a computing host; a virtual reality portable device for operating in an operation space; and a position detection module comprising: a first transmission antenna, electrically connected to The computing host is configured to send a scan signal in a plurality of signal transmission directions in the operation space to receive a reflected signal reflected from a boundary of the operation space, thereby establishing a space model of the operation space; and the second transmission end antenna is electrically connected In the virtual reality device, when the first transmitting end antenna sends the scanning signal, the scanning signal is received along a plurality of signal receiving directions, and a plurality of signal intensity data corresponding to the signal sending direction and the signal receiving direction are transmitted; inertial measurement An Inertial Measurement Unit (IMU) is disposed in a virtual reality portable device to transmit a device pointing signal by detecting a pointing device of the virtual reality portable device; and an arithmetic unit connected to the first transmitting end antenna, The second transmitting end antenna and the inertial measuring unit are configured to perform beamforming processing according to the signal strength data corresponding to the signal sending direction and the signal receiving direction, thereby calculating the relative position of the second transmitting end antenna in the operating space. The antenna is at a relative position of one of the antennas of the first transmitting end antenna, and is configured to receive a pointing signal of the device, thereby defining the device orientation according to the spatial model, the relative position of the antenna, and the pointing of the device.

In summary, in the virtual reality system provided by the present invention, the device orientation is obtained by using signal scanning technology combined with beamforming technology and inertial measurement technology, thereby locating the virtual reality portable device. Therefore, it is not necessary to provide a plurality of positioning signal transmitting and receiving base stations, thereby greatly reducing the limitation of the operating space. In addition, by using beamforming technology and inertial measurement technology, the positioning data obtained by the two technologies can be compensated for each other, so that more accurate positioning data can be obtained in time.

100, 100a, 100b‧‧‧ virtual reality system

1‧‧‧Azimuth Detection Module

11‧‧‧First transmission antenna

12, 12a‧‧‧second transmission antenna

13, 13a‧‧‧ inertial measurement unit

14‧‧‧ arithmetic unit

141‧‧‧beamforming operation subunit

142‧‧‧Vector operation subunit

143‧‧‧Boundary Judgment Subunit

2, 2a‧‧‧ computing host

21‧‧‧Play condition judgment unit

22‧‧‧PCIe card slot

23‧‧‧PCIe card

3, 3a‧‧‧ virtual reality portable device

31, 31a‧‧‧Wearing components

311‧‧‧Play unit

32, 32a‧‧‧ Motion detection components

4, 4a, 4b‧‧‧ external communication device

5‧‧‧Electrical connector

200‧‧‧Users

S‧‧‧ operating space

Txd‧‧‧ signal transmission direction

Rxd‧‧‧ signal receiving direction

SM‧‧‧ space model

C‧‧‧standard coordinate system

Zb‧‧‧ border area

Z1, Z2‧‧‧ data playback condition orientation

The first figure shows a schematic diagram of an application environment of the preferred embodiment of the present invention; The second figure shows the functional block diagram of the preferred embodiment of the present invention; the third figure shows the functional block diagram of the first system architecture application in the preferred embodiment of the present invention; The functional block diagram of the second system architecture application in the embodiment; the fifth figure shows a spatial model diagram of the user in a data playback condition orientation of the space model representing the operation space; and the sixth figure shows the user A schematic representation of a spatial model located in one of the spatial models representing the operational space.

Because the virtual reality system and its position detection module provided by the present invention can be widely applied to various virtual reality systems, the combined implementation manners are numerous, so it will not be repeated here, only one is listed. The embodiment plus its two system architecture applications are specifically described.

Referring to the first to third figures, a virtual reality system 100 includes an orientation detection module 1, a computing host 2, and a virtual reality portable device 3. The virtual reality portable device 3 is provided for a user 200 to use in an operating space S, and can be communicably connected to the computing host 2 by means of wired or wireless communication.

The azimuth detection module 1 includes a first transmission end antenna 11, a second transmission end antenna 12, an inertial measurement unit (IMU) 13 and an operation unit 14. The first transmission end antenna 11 is electrically connected to the computing host 2 and is used along the majority in the operation space S. The signal transmitting direction Txd sends a scanning signal to receive a reflected signal reflected from the boundary of the operating space S, thereby using the computing host 2 to establish a spatial model SM of the operating space S according to the intensity of the reflected signal (marked in the fifth figure and Figure 6). The first transmission end antenna 11 is further provided with a reference coordinate system C, and the spatial model SM is established according to the reference coordinate system C.

The second transmitting end antenna 12 is electrically connected to the virtual reality portable device 3, and when the first transmitting end antenna 11 transmits the scanning signal, receives the scanning signal along a plurality of signal receiving directions Rxd, and transmits a plurality of corresponding signals corresponding to the The signal transmission direction Txd and the signal strength information of the signal receiving directions Rxd. The inertial measurement unit 13 is disposed on the virtual reality portable device 3 to detect a device pointing by one of the virtual reality portable devices 3 to transmit a device pointing signal.

In an embodiment, the computing unit 14 is further communicably connected to the first transmitting antenna 11, the second transmitting antenna 12 and the inertial measuring unit 13 by the computing host 2, and includes a beamforming operation. The subunit 141, a vector operation subunit 142, and a boundary determination subunit 143. The beamforming operation sub-unit 141 is configured to perform a beam-forming operation process according to the signal strength data corresponding to the signal transmission direction Txd and the signal reception directions Rxd. The vector operation sub-unit 142 can calculate the relative position of the second transmission antenna 12 in the operation space S relative to the antenna of the first transmission end antenna 11 according to the result obtained by the beamforming operation processing, or directly according to the corresponding Calculating an antenna relative position vector according to the signal strength data of the signal transmission direction Txd and the signal receiving directions Rxd, and according to the relative position of the antenna The set vector defines the relative position of the antenna.

The computing unit 14 can receive the device pointing signal by the computing host 2 to obtain the device pointing of one of the virtual reality portable devices 3, and can also obtain the spatial model SM by the computing host 2. Therefore, the space model SM can be further utilized. The relative position of the antenna and the pointing of the device, and the reference coordinate system C described above is used to define the orientation of the device. The defined device orientation may include device position coordinates and device orientation (including azimuth and elevation angles).

The virtual reality portable device 3 includes a wearable component 31 and a motion detection component 32. The wearable component 31 can be a head mounted display component (HMD) for the user 200 to wear on the head, and the head mounted display component (HMD) can include a playback unit 311. The motion detecting component 32 is then used by the user 200 to hold it by hand.

As shown in the third figure, in the first system architecture application in an embodiment of the present invention, the first transmitting end antenna 11 and the second transmitting end antenna 12 are respectively disposed on the computing host 2 and the virtual mode in an external manner. Real-life portable device 3. In the first system architecture application of the embodiment, the virtual reality system 100a includes three external communication devices 4, 4a and 4b, another second transmission antenna 12a, and the like in addition to all the above constituent elements. An inertial measurement unit 13a and an electrical connector 5. The electrical connector 5 can be a high definition multimedia interface (HDMI) connector, a digital video connection standard (DisplayPort; DP) connector, a universal serial bus (Universal Serial Bus; USB) transport or a Thunderblot interface connector.

The first transmission antenna 11 is disposed in the external communication device 4, and the external communication device 4 is externally connected to the computing host 2 via the electrical connector 5, and the second transmission antennas 12 and 12a are respectively disposed on the external connection. In the communication devices 4a and 4b, the external communication devices 4a and 4b are externally connected to the wearable component 31 and the motion detecting component 32 of the virtual reality portable device 3, respectively. Therefore, by the above means, the device orientation of the wearable component 31 and the motion detecting component 32 can be obtained together.

Please refer to the fourth figure, which is a functional block diagram showing a second system architecture application in an embodiment of the present invention. As shown in the fourth figure, in the second system architecture application in an embodiment of the present invention, the first transmission end antenna 11 and the second transmission end antenna 12 are respectively disposed in the computing host 2 and in a built-in manner. Another virtual reality portable device 3a. In another virtual reality system 100b constructed under the system architecture, the first transmission antenna 11 can be disposed in a PCI Express (PCIe) card 23 in the computing host 2a. The first transmission antenna 11 is placed in the computing host 2a in such a manner that the PCIe card 23 is plugged into one of the PCIe card slots 22 in the computing host 2. The second transmitting end antennas 12 and 12a may also be built in the wearable component 31a and the motion detecting component 32a of the virtual reality portable device 3a, respectively. Further, the arithmetic unit 14 described above may be further provided in the arithmetic unit 2a. By means of the built-in setting, all the components in the virtual reality system 100a can be collectively disposed in the computing host 2a and the virtual reality portable device 3a, thereby further reducing the space occupied by the virtual reality system 100b.

Please continue to refer to the fifth and sixth figures, wherein the fifth figure shows that the user is located in the space model representing the operating space. Schematic diagram of the spatial model of the material playing condition orientation; the sixth figure shows a spatial model diagram of the user's position in another spatial playing condition representing the operating space. At the same time, please refer to the second to fourth figures together. As shown in the second to sixth figures, the boundary determination sub-unit 143 of the arithmetic unit 14 can further define at least one boundary region Zb according to the spatial model SM. The computing host 2 further includes a playing condition judging unit 21.

The boundary determination sub-unit 143 determines whether the second transmission-end antenna 12 or 12a is located in the boundary area Zb according to the relative position of the antenna. When the user 200 operates the virtual reality portable device 3 or 3a in the spatial model and moves to the boundary region Zb defined by the spatial model SM, the boundary determining sub-unit 143 can determine the second transmitting antenna 12 or 12a. It is located in the boundary area Zb and transmits a boundary warning signal, and the boundary warning signal can be played by the playing unit 311 of the wearable component 31 or 31a to remind the user of the attention.

The playing condition determining unit 21 may be provided with a plurality of data playing condition orientations, each of the data playing condition orientations corresponding to one of the plurality of data playing contents, and receiving and determining the device orientation and the data playing condition orientation. When one of the data matches, one of the corresponding data playing contents is defined as an instant data playing content, and an instant playing signal for playing the instant data playing content is transmitted.

Taking the fifth and sixth figures as an example, in an embodiment, the virtual reality system 100a is a shooting virtual reality system, and the wearable component 31 or the motion detecting component 32 operated by the user 200 is located therein. A data playback condition orientation Z1 (such as the data play bar in the long-range shooting situation) When the position is), the instant data playback content can be played for a long distance shooting scene. In other words, when the wearable component 31 or the motion detection component 32 operated by the user 200 enters the data playback condition orientation Z1, the playback condition determination unit 21 determines that the device orientation matches the data playback condition orientation Z1, so that the playback unit 311 The instant data played by the instant play is the content of the long-range shooting scene.

When the wearable component 31 or the motion detection component 32 that the user 200 operates with the user 200 moves to another data playback condition orientation Z2 (such as the data playback condition orientation in the close combat situation), the instant data play content Play content for a close-range wrestling situation (such as a bayonet). In other words, when the wearable component 31 or the motion detection component 32 operated by the user 200 enters the data playback condition orientation Z2, the playback condition determination unit 21 determines that the device orientation matches the data playback condition orientation Z2, so that the playback unit 311 The instant data played by the instant play is the content of the close combat situation.

It can be seen from the above-mentioned embodiments of the present invention that the creation has an industrial use value. However, the above embodiments are merely illustrative of the preferred embodiments of the present invention, and those skilled in the art can make various other modifications and changes as described in the above embodiments of the present invention. However, all of the improvements and variations made in accordance with the present embodiment are still within the scope of the creative spirit and definition of the present invention.

100a‧‧‧Virtual Reality System

11‧‧‧First transmission antenna

12, 12a‧‧‧second transmission antenna

13, 13a‧‧‧ inertial measurement unit

14‧‧‧ arithmetic unit

141‧‧‧beamforming operation subunit

142‧‧‧Vector operation subunit

143‧‧‧Boundary Judgment Subunit

2‧‧‧ computing host

21‧‧‧Play condition judgment unit

3‧‧‧Virtual reality portable device

31‧‧‧Wearing components

311‧‧‧Play unit

32‧‧‧ Motion detection component

4, 4a, 4b‧‧‧ external communication device

5‧‧‧Electrical connector

Claims (21)

An orientation detection module is configured to detect a device orientation of a virtual reality portable device in an operation space, and includes: a first transmission end antenna electrically connected to a computing host and used to The operation space sends a scan signal along a plurality of signal transmission directions to receive a reflected signal reflected from a boundary of the operation space, thereby establishing a spatial model of the operation space; and a second transmission end antenna electrically connected And the virtual reality device, and when the first transmission antenna transmits the scan signal, receiving the scan signal in a plurality of signal receiving directions, and transmitting a plurality of corresponding signal transmission directions and the signal receiving Signal strength data of the direction; an inertial measurement unit (IMU) is disposed in the virtual reality portable device, to detect that the device of the virtual reality portable device is pointed to transmit a device pointing signal; An arithmetic unit is communicably connected to the first transmitting end antenna, the second transmitting end antenna, and the inertial measurement unit by the computing host And performing beam-forming operation processing on the signal strength data corresponding to the signal sending direction and the signal receiving directions, so as to calculate that the second transmitting antenna is relatively in the operating space. And corresponding to an antenna of the first transmitting end antenna, and configured to receive the device pointing signal, thereby defining the device orientation according to the spatial model, the relative position of the antenna, and the pointing of the device. Azimuth detection mode as described in item 1 of the patent application scope The group, wherein the first transmitting antenna is further provided with a reference coordinate system, and the spatial model is established according to the reference coordinate system, thereby using the reference coordinate system to define the device orientation. The orientation detection module of claim 1, wherein the operation unit further comprises a vector operation subunit, wherein the vector operation subunit is configured to correspond to the signal transmission directions and the An antenna relative position vector is calculated from the signal strength data of the signal receiving direction, and the relative position of the antenna is defined according to the relative position vector of the antenna. The orientation detection module of claim 1, wherein the operation unit further comprises a boundary determination subunit, wherein the boundary determination subunit defines at least one boundary area according to the spatial model, and according to the The relative position of the antenna determines whether the second transmitting end antenna is located in the boundary area, so that when it is determined that the second transmitting end antenna is located in the boundary area, a boundary warning signal is transmitted. The orientation detecting module of claim 1, wherein the computing unit is disposed on the computing host. The azimuth detection module of claim 1, wherein the first transmission end antenna is disposed on a PCI Express (PCIe) card, and the PCIe card is plugged into the Operation One PCIe card slot in the host. The azimuth detection module of claim 1, wherein the first transmission antenna is disposed in an external communication device, and the external communication device is electrically connected to the electrical connector by an electrical connector. The computing host. The azimuth detection module of claim 1, wherein the virtual reality portable device comprises at least one of a wearable component and a motion detection component, and the second transmission antenna system Built in at least one of the wearable component and the motion detection component. The azimuth detection module of claim 1, wherein the virtual reality portable device comprises at least one of a wearable component and a motion detection component, and the second transmission antenna is electrically Connected to an external communication device, and the external communication device is externally connected to at least one of the wearable component and the motion detection component. A virtual reality system, comprising: a computing host; a virtual reality portable device for operating in an operating space; and a position detecting module comprising: a first transmitting end antenna electrically connected to the The computing host is configured to send a scan along the plurality of signaling directions in the operating space The signal receives a reflected signal reflected from a boundary of the operation space, thereby establishing a spatial model of the operation space; a second transmission end antenna is electrically connected to the virtual reality portable device, and is in the When transmitting the scan signal, a transmitting antenna receives the scan signal along a plurality of signal receiving directions, and transmits a plurality of signal strength data corresponding to the signal sending directions and the signal receiving directions; an inertial measuring unit (Inertial) The measurement unit (IMU) is disposed in the virtual reality portable device, to detect that the device of the virtual reality portable device is pointed to transmit a device pointing signal; and an operation unit is connected to the first transmission The end antenna, the second transmission end antenna and the inertial measurement unit are configured to perform beam-forming operation processing according to the signal strength data corresponding to the signal transmission direction and the signal receiving directions, thereby Calculating a relative position of the antenna of the second transmitting end antenna relative to one of the antennas of the first transmitting end antenna in the operating space, and using The signal receiving apparatus directed, whereby the model according to the space, the relative positions of the antenna means directed defined orientation of the device. The virtual reality system of claim 10, wherein the first transmission end antenna further comprises a reference coordinate system, wherein the spatial model is established according to the reference coordinate system, thereby defining the reference coordinate system Device orientation. The virtual reality system of claim 10, wherein the computing unit further comprises a vector operation subunit, according to the signal strength data corresponding to the signal sending directions and the signal receiving directions. An antenna relative position vector is calculated, and the relative position of the antenna is defined according to the relative position vector of the antenna. The virtual reality system of claim 10, wherein the computing unit further comprises a boundary determining sub-unit, wherein the boundary determining unit defines at least one boundary region according to the spatial model, and according to the antenna, The position determines whether the second transmitting end antenna is located in the boundary area, so that when it is determined that the second transmitting end antenna is located in the boundary area, a boundary warning signal is transmitted. The virtual reality system of claim 10, wherein the computing unit is disposed on the computing host. The virtual reality system of claim 10, wherein the first transmission end antenna is disposed on a PCI Express (PCIe) card, and the PCIe card is plugged into the operation. One PCIe card slot in the host is set in the computing host. The virtual reality system of claim 10, wherein the first transmission antenna is disposed in an external communication device. The external communication device is electrically connected to the computing host by an electrical connector. The virtual reality system of claim 10, wherein the virtual reality portable device comprises at least one of a wearable component and a motion detection component, and the second transmission end antenna system Built in at least one of the wearable component and the motion detection component. The virtual reality system of claim 10, wherein the virtual reality portable device comprises at least one of a wearable component and a motion detection component, and the second transmission antenna is electrically Connected to an external communication device, and the external communication device is externally connected to at least one of the wearable component and the motion detection component. The virtual reality system of claim 10, further comprising: a playing condition determining unit, wherein the communication is connected to the position detecting module, and is provided with a plurality of data playing condition orientations, each of the data The playing condition orientation corresponds to one of the plurality of data playing contents, and when receiving and judging that the device orientation matches one of the data playing condition orientations, one of the corresponding data playing contents The user is defined as an instant data playing content, and a real-time playing signal for playing the real-time data playing content is transmitted; and a playing unit is connected to the playing condition judging unit for receiving Receiving the instant play signal to play the instant data play content in an instant. The virtual reality system of claim 19, wherein the play condition judging unit is disposed on the computing host. The virtual reality system of claim 19, wherein the virtual reality portable device comprises a wearable component, and the wearable component is a head mounted display component, and the playing unit is Set on the head mounted display component.