VR somatosensory seat and control method and interaction system thereof

Abstract

The invention provides a VR somatosensory seat, a control method thereof and an interaction system, the VR somatosensory seat comprises a support seat, a seat, a plurality of pressure sensors and a wireless communication unit, and the seat is rotatably connected to the support seat; the plurality of pressure sensors are arranged on the surface of one side, opposite to the supporting seat, of the chair seat in an array, and the pressure sensors are used for detecting pressure applied by a user sitting on the chair seat; the wireless communication unit is electrically connected with the pressure sensor, the wireless communication unit is used for being in communication connection with VR equipment so as to send information used for carrying out preset control on VR information to the VR equipment, and the VR information comprises VR figures and VR scenes. According to the method and the device, the problem that the motion sickness of the user is caused due to the fact that the visually observed state of the user is inconsistent with the real state of the body is solved.

Description

Technical Field

[0001] The present application relates to the field of virtual reality technology, and in particular to a VR somatosensory chair and a control method and an interactive system thereof. Background Art

[0002] Virtual reality technology is a computer simulation system that can create and experience a virtual world. It uses computers to generate a simulated environment. It is a system simulation of interactive three-dimensional dynamic vision and entity behavior that integrates multi-source information, allowing users to immerse themselves in the environment.

[0003] As the name implies, somatosensory games are electronic games that are felt with the body. Breaking through the previous operation mode of simply inputting with handle buttons, somatosensory games are a new type of electronic games that are operated through changes in body movements. In order to improve the comfort of players during operation and reduce fatigue, they are usually operated in conjunction with VR somatosensory chairs. VR somatosensory chairs in the prior art are usually used to enhance the human perception of VR information, such as vibrating and heating the chair according to VR information, thereby enhancing the player's real experience of the game. Of course, some VR somatosensory chairs can also sense the player's body movements and send them to the controller as operation instructions to control the VR virtual scene. However, it was found in the actual experience process that this interaction method easily causes the state observed by the user visually to be inconsistent with the real state of the body, that is, when the user turns the perspective or moves, the angle of the VR display screen switching is inconsistent with the user's movement, or the user's movement amplitude is large, and the rotation amplitude of the VR display screen is small, resulting in low accuracy of human control of the VR virtual scene, which is easy to cause the user's expected picture to be inconsistent with the VR display screen in the VR full-view screen, and then it is easy for the user to have a dynamic or positional illusion due to spatial positioning obstacles, and then produce adverse reactions such as dizziness or even vomiting. Summary of the invention

[0004] The embodiments of the present application provide a VR somatosensory chair and a control method and an interactive system thereof, which solve the problem that the state observed visually by the user is inconsistent with the actual state of the body, thereby causing motion sickness in the user.

[0005] The present invention is implemented as follows: a VR somatosensory chair includes a support seat, a seat, multiple pressure sensors and a wireless communication unit; the seat is rotatably connected to the support seat; multiple pressure sensor arrays are arranged on the side surface of the seat facing away from the support seat, and the pressure sensors are used to detect the pressure applied by a user sitting on the seat; the wireless communication unit is electrically connected to the pressure sensor, and the wireless communication unit is used to communicate with a VR device to send information to the VR device for preset control of VR information, and the VR information includes VR characters and VR scenes.

[0006] In one embodiment, the plurality of pressure sensors are evenly arranged in a square array or evenly arranged in a circular array.

[0007] In one of the embodiments, the VR motion sensing chair also includes a backrest, which is connected to the edge of the seat, and a surface of the backrest close to the seat is provided with an infrared sensor electrically connected to the wireless communication unit; the infrared sensor is strip-shaped, and the length direction of the infrared sensor is perpendicular to the height direction of the backrest.

[0008] In one embodiment, the VR somatosensory chair further comprises a seat plate, the seat plate is connected to the seat through an elastic member, and the seat plate and the seat are parallel to each other;

[0009] A plurality of pressure protrusions are provided on a surface of the seat plate facing the seat, and the plurality of pressure protrusions are respectively arranged in one-to-one correspondence with the plurality of pressure sensors, so that when the seat plate is pressed toward the seat side, the pressure protrusions apply pressure to the pressure sensors.

[0010] In one embodiment, the seat plate is concentrically arranged with the seat cushion, and the elastic member is respectively connected to the center position of a side surface of the seat plate facing the seat cushion and the center position of a side surface of the seat cushion facing the seat plate.

[0011] In one embodiment, the height of the pressure protrusion is smaller than the length of the elastic member when it is not compressed, and the height of the pressure protrusion is larger than the length of the elastic member after it is compressed.

[0012] In one of the embodiments, the VR motion sensing chair also includes an angle detection device, which is disposed on the seat. The angle detection device is electrically connected to the wireless communication unit, and the angle detection device is used to detect the rotation angle of the seat relative to the support seat.

[0013] In one embodiment, the support seat includes a base and a support column connected to the base along the thickness direction of the base;

[0014] A ball bearing is provided at the center of a side surface of the seat facing the support column, and the ball bearing is connected to a side surface of the support column away from the base;

[0015] The angle detection device is located inside the inner steel ring of the ball bearing.

[0016] In one embodiment, the support column includes a first support tube and a second support tube, the first support tube is connected to the base, and the second support tube is connected to the seat;

[0017] The second support tube is coaxially connected to the first support tube, and in the axial direction of the second support tube, the second support tube is movable relative to the first support tube to adjust the length of the support column.

[0018] In one embodiment, a wiring channel is provided inside the base, and the wiring channel is communicated with the first support tube;

[0019] The wireless communication unit is disposed in the first supporting tube, and the wireless communication unit is connected to a power line, the power line is located in the wiring channel, and the power line is used to connect to an external power source.

[0020] In one embodiment, the VR somatosensory chair further includes a foot signal sensing board and a pedal, and the foot signal sensing board and the pedal are both electrically connected to the wireless communication unit;

[0021] The foot signal sensing board is disposed adjacent to the support seat, and the foot signal sensing board is used to receive foot movement signals of a user sitting on the seat;

[0022] The pedal is arranged on the foot signal sensing plate, and is arranged obliquely relative to the foot signal sensing plate. The pedal is used to receive a stepping force signal of the foot of a user sitting on the seat.

[0023] An embodiment of the present application also provides an interactive system for a VR somatosensory chair, comprising a VR somatosensory chair and a VR device as in any of the above embodiments, wherein the VR device is communicatively connected to the wireless communication unit, and the VR device is used to receive information sent by the wireless communication unit and perform preset control on the VR information, wherein the VR information includes VR characters and VR scenes.

[0024] The embodiment of the present application further provides a control method for a VR somatosensory chair, wherein the VR somatosensory chair is a VR somatosensory chair as in any of the above embodiments, comprising:

[0025] Establishing a rectangular coordinate system, and calibrating the two-dimensional coordinates of each of the pressure sensors in the rectangular coordinate system;

[0026] Calibrate the two-dimensional coordinates of the initial position of the center of gravity of the human body in the rectangular coordinate system;

[0027] When the sitting posture of the human body changes, obtaining the two-dimensional coordinates of the position of the changed center of gravity of the human body in the rectangular coordinate system;

[0028] According to the two-dimensional coordinates of the initial position of the human body's center of gravity and the two-dimensional coordinates of the position after the human body's center of gravity changes, the direction of change and the moving distance of the human body's center of gravity are determined to preset the VR information.

[0029] In one embodiment, when the sitting posture of a human body changes, obtaining the two-dimensional coordinates of the position of the changed center of gravity of the human body in the rectangular coordinate system includes:

[0030] There are four pressure sensors, which are respectively located in the four directions of +X, -X, +Y and -Y in the rectangular coordinate system. The pressure values ​​of the four pressure sensors are mapped to the rectangular coordinate system to obtain four mapping values ​​(P1x, P1y), (P2x, P2y), (P3x, P3y) and (P4x, P4y);

[0031] Calculate the two-dimensional coordinates (Px, Py) of the position after the center of gravity of the human body changes; wherein, Px = (P1x + P2x - P3x - P4x) / P1x + P2x + P3x + P4x; Py = (P1y + P4y - P2y - P3y) / P1y + P2y + P3y + P4y; P1x = P1y, P2x = P2y, P3x = P3y and P4x = P4y.

[0032] In one embodiment, when the sitting posture of a human body changes, obtaining the two-dimensional coordinates of the position of the changed center of gravity of the human body in the rectangular coordinate system includes:

[0033] The pressure values ​​of the plurality of pressure sensors are weighted averaged in the four directions of +X, -X, +Y and -Y in the rectangular coordinate system to obtain four weighted average values ​​(P1x, P1y), (P2x, P2y), (P3x, P3y) and (P4x, P4y);

[0034] Calculate the two-dimensional coordinates (Px, Py) of the position after the center of gravity of the human body changes; wherein, Px = (P1x + P2x - P3x - P4x) / P1x + P2x + P3x + P4x; Py = (P1y + P4y - P2y - P3y) / P1y + P2y + P3y + P4y; P1x = P1y, P2x = P2y, P3x = P3y and P4x = P4y.

[0035] In one embodiment, when the sitting posture of a human body changes, obtaining the two-dimensional coordinates of the position of the changed center of gravity of the human body in the rectangular coordinate system includes:

[0036] Detecting the pressure value of each of the plurality of pressure sensors in real time;

[0037] The position of the pressure sensor with the highest pressure value among the multiple pressure sensors is determined as the position of the center of gravity of the human body, so as to obtain the two-dimensional coordinates (Px, Py) of the position after the center of gravity of the human body changes.

[0038] In one embodiment, after determining the direction of change and the moving distance of the human body's center of gravity according to the two-dimensional coordinates of the initial position of the human body's center of gravity and the two-dimensional coordinates of the position after the change of the human body's center of gravity, the method further includes:

[0039] A three-dimensional coordinate system is established, where the center of gravity of the human body is located on a spherical surface with the two-dimensional coordinate of the initial position of the center of gravity of the human body as the center of the sphere and the preset distance as the radius;

[0040] The two-dimensional coordinates (Px, Py) of the position after the center of gravity of the human body is changed are substituted into the three-dimensional coordinate system to determine the three-dimensional coordinates (Px, Py, Pz) of the position after the center of gravity of the human body is changed.

[0041] The beneficial effects of the VR somatosensory chair and its control method and interactive system provided by the present application are as follows: Compared with the prior art, the present application sets a pressure sensor on the seat, through which the pressure applied by the user sitting on the seat can be detected, and the pressure information detected by the pressure sensor is sent to the VR device by using a wireless communication unit, so that the VR device can obtain the change of the user's body center of gravity position according to the received information, and accurately preset the VR character and VR scene. This can improve the control accuracy of the VR character and VR scene, so that the user's expected picture is consistent with the VR display picture, improve the movement matching of the user's body and the character in the VR game, and avoid the user from having adverse reactions such as dizziness or even vomiting. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a structural schematic diagram of a VR somatosensory chair provided in an embodiment of the present application;

[0043] Figure 2 It is a schematic diagram of the principle of the interactive system of the VR somatosensory chair provided in the embodiment of the present application;

[0044] Figure 3 is a top view of a VR somatosensory chair provided in an embodiment of the present application;

[0045] Figure 4 It is a structural schematic diagram of a seat plate provided on the seat of a VR somatosensory chair provided in an embodiment of the present application;

[0046] Figure 5 is a schematic diagram of a side surface of a seat of a VR somatosensory chair provided in an embodiment of the present application, close to a support column;

[0047] Figure 6 It is a schematic diagram of the structure of the support column of the VR somatosensory chair provided in an embodiment of the present application;

[0048] Figure 7 It is a structural schematic diagram of a support base of a VR somatosensory chair provided in an embodiment of the present application, in which a foot signal sensing plate and a pedal are adjacently arranged;

[0049] Figure 8 This is a flow chart of a method for controlling a VR somatosensory chair provided in an embodiment of the present application;

[0050] Figure 8-1 This is a schematic diagram after completing step S101;

[0051] Fig. 9 yes Figure 8 A flowchart of a specific embodiment of step S103;

[0052] Figure 9-1 It is a schematic diagram of setting four pressure sensors on the seat in the control method of the VR somatosensory chair provided in the embodiment of the present application;

[0053] Fig.10 yes Figure 8 A flowchart of another specific embodiment of step S103;

[0054] Figure 10-1 for Fig.10 The coordinate model diagram of the pressure sensor and the center of gravity change in step S1103;

[0055] Fig.11 yes Figure 8 A flowchart of another specific embodiment of step S103;

[0056] Fig.12 is another flow chart of the control method of the VR somatosensory chair provided in the embodiment of the present application;

[0057] Figure 12-1 To complete Fig.12 Schematic diagram after step S205 in .

[0058] Reference numerals: 100, VR device; 200, external power supply;

[0059] 1. Support seat; 11. Base; 110. Wiring channel; 12. Support column; 121. First support tube; 1210. First positioning hole; 122. Second support tube; 1220. Second positioning hole; 123. Positioning pin;

[0060] 2. Seat; 20. Pressure sensor; 21. Ball bearing;

[0061] 3. Angle detection device; 4. Wireless communication unit; 41. Power cord;

[0062] 5. seat plate; 51. elastic member; 52. pressure bulge;

[0063] 6. Chair back; 7. Infrared sensor; 8. Foot signal sensor board; 9. Pedal. DETAILED DESCRIPTION

[0064] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0065] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0066] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0067] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0068] It should also be noted that, in the embodiments of the present application, the same figure mark is used to represent the same component or the same part. For the same parts in the embodiments of the present application, the figure may only mark one of the parts or components as an example. It should be understood that the figure mark also applies to other identical parts or components.

[0069] The embodiments of the present application provide a VR somatosensory chair and a control method and an interactive system thereof, which solve the problem that the state observed visually by the user is inconsistent with the actual state of the body, thereby causing motion sickness in the user.

[0070] In the related art, when users experience VR games, they usually use the VR device 100 and the VR somatosensory chair together. The VR somatosensory chair can receive VR somatosensory images and enhance the user's human perception of VR information, so that the user can be more immersed in the game and enhance the real experience of the game. At the same time, the user's operation of the VR game is completed through an operating handle. The VR device 100 has an independent VR control system, which controls the tasks or scenes in the VR game after receiving the operation signal of the operating handle. In the prior art, when playing VR games, users operate the operating handle with both hands, which will cause hand fatigue for a long time and reduce the flexibility of hand operation. In addition, the human body hardly moves during VR games. Movement, the matching between the human body and the movement of the characters in the game is low, the gaming experience is poor, and the VR somatosensory chair can only receive VR somatosensory information to enhance the human body's perception of VR information, and cannot relieve the user's hand fatigue, making the interaction between the human body and VR games too single and the degree of interaction weak. Although some VR somatosensory chairs have the function of detecting the user's posture and controlling the VR scene or characters according to the user's posture, the detected user posture is not very accurate, so that the user's rotation angle and rotation amplitude are inconsistent with the rotation angle and rotation amplitude of the VR display screen, which easily reduces the control accuracy of the VR virtual scene and causes the user to experience motion sickness, that is, dizziness or even vomiting and other adverse reactions.

[0071] Motion sickness is mainly divided into visual motion sickness and simulation motion sickness. Among them, visual motion sickness refers to the dizziness caused by the visual system of the headset alone, which has nothing to do with the body itself. The dizziness is mainly caused by the high latency problem caused by the refresh rate, flicker, gyroscope, etc. of the headset itself. If the screen itself has a delay, it is very obvious. When you turn your head, you should see the corresponding side image, but due to the problem of device delay, you have to wait for a while to see it, which is inconsistent with our usual life state, and the body will react. The essence of simulation motion sickness is caused by the inconsistency between the state observed visually by the user and the real state of the body. When the visual focus is concentrated on one position (screen), although the screen is still, the objects in the image keep moving, especially when approaching or pulling away from you, the eyes are deceived, the mind is in a highly tense state, but your body does not make any corresponding movements, and the mind and body are mismatched. The problem solved in this application is to prevent the occurrence of simulation motion sickness.

[0072] refer to Figure 1-Figure 2The VR somatosensory chair provided in the embodiment of the present application includes a support seat 1, a seat 2, a plurality of pressure sensors 20 and a wireless communication unit 4; the seat 2 is rotatably connected to the support seat 1; a plurality of pressure sensors 20 are arranged in an array on a side surface of the seat 2 facing away from the support seat 1, and the pressure sensor 20 is used to detect the pressure applied by a user sitting on the seat 2; the wireless communication unit 4 is electrically connected to the pressure sensor 20, and the wireless communication unit 4 is used to communicate with the VR device 100 to send information for preset control of VR information to the VR device 100.

[0073] The VR information includes VR characters and VR scenes. Of course, the VR information is different in different VR images. For example, in VR games, the VR information mainly includes VR characters and VR scenes. If the VR image is a VR video movie, the user is just a viewer, and the VR information is mainly the VR scene. As the user's posture on the seat 2 changes, the user's body center of gravity will also change, and the VR scene can rotate accordingly, which can give the user an immersive feeling.

[0074] Through the above settings, a plurality of pressure sensors 20 are arranged on the seat 2. When the user sitting on the seat 2 tilts his body, the pressures felt by each pressure sensor 20 are different, so the user's posture can be detected. When the user's body posture changes, the distance between the user and the chair back 6 will also change. The wireless communication unit 4 sends the information detected by the pressure sensor 20 to the VR device 100, so that the VR device 100 performs preset control on the VR information. In this way, the user's body tilt can be used as an operation instruction for the VR device 100 to control the VR information, so that the human body movement replaces the hands to operate the VR game, freeing the hands and reducing hand fatigue. In addition, compared with the VR somatosensory chair in the prior art that can only passively receive VR somatosensory information, the VR somatosensory chair in this application is equivalent to the operating handle in the prior art, which can detect human body movement and send it as an operation instruction to the VR device 100 to realize the control of VR information, so that the interaction mode between the human body and the VR device 100 changes from unilateral reception to bilateral interaction, and the degree of interaction is stronger. In the VR game, the human body is always in motion, which can further enhance the matching of the human body and the movement of the characters in the game, and improve the game experience. The multiple pressure sensors 20 can detect the user's body posture changes more accurately, thereby improving the accuracy of VR information control, avoiding motion sickness in the user, and enhancing the user's VR experience.

[0075] The above-mentioned VR device 100 can be a VR electronic terminal such as a mobile phone, a tablet, a VR helmet, VR glasses, etc. The VR device 100 can display VR pictures for users to watch. The VR device 100 has a controller for controlling VR information in the VR picture. The controller can wirelessly connect and communicate with the wireless communication unit 4 so as to wirelessly receive information sent by the wireless communication unit 4, and quickly and timely preset the VR information according to the human body's movements.

[0076] It should be noted that the VR somatosensory chair in the present application is used in conjunction with the VR device 100, wherein the VR device 100 has been pre-set with operation instructions represented by different actions performed by the user sitting on the seat 2 before use. For example, when the VR device 100 is playing a VR game, the user's left turn or right turn represents the VR scene turning left or right, the user's body leaning forward represents the VR character walking forward, the user's body leaning backward represents the VR character walking backward, the user's body leaning represents the VR character walking left, and the user's body leaning right represents the VR character walking right. In this way, when the VR device 100 receives the information sent by the wireless communication unit 4, it can respond quickly and perform corresponding preset control on the VR information, thereby reducing control delays. At the same time, it can also make the VR displayed picture consistent with the picture expected by the user, avoid motion sickness in the user, and enhance the user's experience.

[0077] The operation instructions represented by the above-mentioned user actions are only one example and are not limited to this. In specific application scenarios, different user actions can also be set to represent other operation instructions. In this way, the VR somatosensory chair of the present application can adapt to the interaction between the human body and the VR screen when different VR screens are displayed, thereby enhancing the degree of interaction between the human body and the VR screen.

[0078] In the embodiment of the present application, the wireless communication unit 4 can be a Bluetooth module, which has a fast transmission speed and is not limited by wireless networks. It can be used in any occasion and is more practical. The wireless communication unit 4 can also be a WIFI module. Transmitting information through WIFI can increase the speed of information transmission, avoid information transmission delay, and make interactivity better.

[0079] In some embodiments, the seat 2 can be circular or regular polygonal, which is not specifically limited in the present application. Figure 3, multiple pressure sensors 20 can be evenly arranged in a square array or a circular array, so that when the user sits on the seat 2, a certain pressure will be generated on the pressure sensor 20. When the user's body tilts, the user's body center of gravity changes, and the pressure felt by each pressure sensor 20 will also be different. In this way, the direction in which the user's body tilts, that is, the user's specific posture, can be judged by the pressure value detected by the pressure sensor 20, so that the user's body movements can be accurately obtained, so that the VR device 100 can accurately control the VR information.

[0080] In some embodiments, reference Figure 1 and Figure 3 The VR somatosensory chair also includes a backrest 6, which is connected to the edge of the seat 2; an infrared sensor 7 electrically connected to the wireless communication unit 4 is provided on the side surface of the backrest 6 close to the seat 2; the infrared sensor 7 is in a strip shape, and the length direction X of the infrared sensor 7 is perpendicular to the height direction Z of the backrest 6. In this way, no matter what posture the user makes on the seat 2, the infrared sensor 7 can detect the distance between the human body and the backrest 6, and assist in judging a more accurate posture of the human body, so as to accurately control the operation screen in the VR scene.

[0081] In the embodiment of the present application, the chair back 6 is provided to enhance the comfort of the user sitting on the VR somatosensory chair, and the infrared sensor 7 is provided on the chair back 6. The infrared sensor 7 can detect the distance between the user and the chair back 6. When the user sits on the VR somatosensory chair, the infrared sensor 7 can detect it. The wireless communication unit 4 sends the signal detected by the infrared sensor 7 to the VR device 100. The VR device 100 combines the signal detected by the pressure sensor 20 and the signal detected by the infrared sensor 7 to judge the user's more accurate body posture, so as to accurately control the VR information. In addition, the VR device 100 will control the wireless communication unit 4 to receive the signal sent by the pressure sensor 20 only after receiving the signal detected by the infrared sensor 7. In this way, the wireless communication unit 4 will receive the information detected by the pressure sensor 20 only when a user sits on the VR somatosensory chair. Otherwise, the wireless communication unit 4 and the pressure sensor 20 on the VR somatosensory chair will be in a standby dormant state, which is conducive to extending the service life of the wireless communication unit 4 and the pressure sensor 20, and thus extending the service life of the VR somatosensory chair.

[0082] The infrared sensor 7 is a sensor that uses the physical properties of infrared rays to perform measurements. Infrared rays, also known as infrared light, have properties such as reflection, refraction, scattering, interference, and absorption. Any substance, as long as it has a certain temperature (above absolute zero), can radiate infrared rays. The infrared sensor does not directly contact the object being measured during measurement, so there is no friction, and has the advantages of high sensitivity and fast response.

[0083] In some embodiments, reference Figure 1 The VR somatosensory chair also includes an angle detection device 3, which is arranged on the seat 2. The angle detection device 3 is electrically connected to the wireless communication unit 4, and the angle detection device 3 is used to detect the rotation angle of the seat 2 relative to the support seat 1.

[0084] It should be noted that the seat 2 can rotate relative to the support seat 1, so that the user sitting on the seat 2 can turn left and right to adjust the direction. The angle detection device 3 set on the seat 2 can detect the angle of the user's rotation, and the VR scene can rotate accordingly with the user's rotation, which can give the user an immersive feeling. In addition, the wireless communication unit 4 sends the information detected by the angle detection device 3 to the VR device 100, so that the user's body rotation can also be used as an operation instruction for the VR device 100 to control the VR information, so that human body movements replace hands to operate VR games, freeing both hands and reducing hand fatigue.

[0085] In some embodiments, the angle detection device 3 is a gyroscope or an angle sensor. Since the angle detection device 3 is arranged on the seat 2, when the user sits on the seat 2 and turns, the angle detection device 3 rotates accordingly, and can detect the angle and direction of the user's rotation. In this way, after the wireless communication unit 4 sends the information detected by the angle detection device 3 to the VR device 100, the VR device 100 will control the VR scene to rotate to the same angle as the user, and the rotation direction is also the same as the user's rotation direction. In this way, the user's field of view will be consistent with the field of view of the VR character, thereby improving the degree of interaction and enhancing the user's immersion and experience of the VR game.

[0086] A gyroscope is a device that uses the momentum of a high-speed rotating body to detect the angular motion of a sensitive shell relative to the inertial space around one or two axes orthogonal to the axis of rotation. A gyroscope is a mechanical device whose main part is a rotor that rotates at a very high angular velocity about the rotating axis. The rotor is installed in a bracket. Then, an inner ring frame is added to the central axis of the rotor, so that the gyroscope can move freely around two axes of the plane. Then, an outer ring frame is added outside the inner ring frame. This gyroscope has two balance rings and can move freely around three axes of the plane, which is a complete space gyroscope. Gyroscopes can be used as signal sensors. According to needs, gyroscopes can provide accurate signals such as azimuth, level, position, speed and acceleration.

[0087] An angle sensor is a sensor that senses the angle being measured and converts it into a usable output signal. An angle sensor, as the name implies, is used to detect angles. It has a hole in its body that fits the LEGO axle. When connected to the RCX, the angle sensor counts once for every 1 / 16 turn of the axle. The count increases when turning in one direction and decreases when the direction of rotation changes. The count is related to the initial position of the angle sensor. When the angle sensor is initialized, its count value is set to 0, and it can be reset programmatically if necessary.

[0088] In some embodiments, reference Figure 4 The VR somatosensory chair also includes a seat plate 5, which is connected to the seat 2 through an elastic member 51, and the seat plate 5 and the seat 2 are parallel to each other; a plurality of pressure protrusions 52 are provided on the surface of the seat plate 5 facing the seat 2, and the plurality of pressure protrusions 52 are respectively arranged in one-to-one correspondence with the plurality of pressure sensors 20, so that when the seat plate 5 is pressed toward the side of the seat 2, the pressure protrusions 52 apply pressure to the pressure sensors 20. In this way, when the user sits on the seat plate 5 and tilts his body, the pressure protrusions 52 corresponding to the tilting direction will press on the corresponding pressure sensors 20, so that the pressure felt by the pressure sensors 20 will be amplified, and the pressure sensor 20 will be more sensitive to pressure, so that the user's body does not need to tilt too much, and the pressure sensor 20 can also detect the posture change of the user with a small tilt, which is more conducive to the user issuing operation instructions through the body. At the same time, due to the difference in the size of the buttocks of people of different ages, the pressure signals obtained by each pressure sensor 20 after the user sits on the VR somatosensory chair are not uniform, so the seat plate 5 can effectively eliminate the pressure difference of different users sitting on the VR somatosensory chair, and enhance the applicability of the VR somatosensory chair.

[0089] It should be noted that the seat plate 5 and the chair seat 2 are parallel to each other and are connected by an elastic member 51. When the user sits on the seat plate 5, the elastic member 51 is compressed and the seat plate 5 moves closer to the chair seat 2. Each pressure protrusion 52 presses on the corresponding pressure sensor 20 below it. At this time, the pressure values ​​detected by each pressure sensor 20 are basically the same. When the user leans forward, the pressure value detected by the pressure sensor 20 pressed by the pressure protrusion 52 corresponding to the front will increase, and the pressure values ​​detected by other pressure sensors 20 will correspondingly decrease or remain unchanged. In this way, the user's body posture can be judged according to the pressure value detected by the pressure sensor 20, and the operation instructions issued by the user can be clarified.

[0090] Among them, the elastic member 51 can be a spring, and the elastic member 51 can also be an elastic cushion. The embodiment of the present application does not make specific limitations, as long as the elastic member 51 can meet the requirements that after the user sits on the seat plate 5, the seat plate 5 moves closer to the seat 2, and the pressure protrusion 52 can press the pressure sensor 20.

[0091] In some embodiments, reference Figure 4 The seat plate 5 is concentrically arranged with the seat 2, and the elastic member 51 is respectively connected to the center of the side surface of the seat plate 5 facing the seat 2 and the center of the side surface of the seat 2 facing the seat plate 5. In this way, the pressure on each position of the seat plate 5 is more uniform, and the seat plate 5 can apply pressure evenly to each pressure sensor 20, ensuring that the pressure values ​​detected by each pressure sensor 20 are consistent when the user sits on the seat plate 5.

[0092] It should be noted that the shapes of the seat plate 5 and the chair seat 2 can be set to be the same or different. In order to better bear and apply the pressure brought by the user, the embodiment of the present application sets the seat plate 5 and the chair seat 2 to be circular, and the size of the seat plate 5 is the same as the size of the area surrounded by multiple pressure sensors 20. In this way, the pressure protrusions 52 set on the seat plate 5 only need to be evenly arranged on the edge of the seat plate 5, which greatly reduces the difficulty of setting the pressure protrusions 52.

[0093] The seat plate 5 and the pressure protrusion 52 can be integrally formed, which can ensure that the pressure protrusion 52 will not fall off the seat plate 5, thereby increasing the service life of the VR somatosensory chair, and can also shorten the production time of the seat plate 5 and the pressure protrusion 52, thereby improving the production efficiency of the seat plate 5 and the pressure protrusion 52.

[0094] It should be noted that the pressure protrusion 52 is pressed on the pressure sensor 20. In order to prevent the pressure protrusion 52 from damaging the pressure sensor 20, the pressure protrusion 52 can be made of plastic material, or a smooth arc surface can be set on the side surface of the pressure protrusion 52 facing the pressure sensor 20, so as to avoid the edges and corners of the pressure protrusion 52 from damaging the pressure sensor 20.

[0095] In some embodiments, the height of the pressure protrusion 52 is less than the length of the elastic member 51 when it is not compressed, and the height of the pressure protrusion 52 is greater than the length of the elastic member 51 after being compressed. In this way, when there is no user sitting on the seat plate 5, that is, when the VR somatosensory chair of the present application is not in use, there is a certain distance between the pressure protrusion 52 and the pressure sensor 20, and the pressure sensor 20 does not detect pressure. When the user sits on the seat plate 5, the pressure protrusion 52 will press on the pressure sensor 20 to apply pressure to the pressure sensor 20, and the pressure sensor 20 will detect pressure at this time. In this way, when a user sits on the VR somatosensory chair of the present application, the pressure sensor 20 will detect pressure, which can not only enable the pressure sensor 20 to detect a more accurate pressure value brought by the user, which is conducive to accurately judging the user's body posture, but also the pressure sensor 20 will not always detect pressure, which is conducive to extending the service life of the pressure sensor 20.

[0096] In some embodiments, reference Figure 1 , Figure 4 and Figure 5 The support seat 1 includes a base 11 and a support column 12 connected to the base 11 along the thickness direction of the base 11; a ball bearing 21 is provided at the center position of the side surface of the seat 2 facing the support column 12, and the ball bearing 21 is connected to the side surface of the support column 12 away from the base 11; the angle detection device 3 is located on the inner side of the inner steel ring of the ball bearing 21.

[0097] Among them, ball bearings are a type of rolling bearings. Spherical alloy steel balls are installed between the inner and outer steel rings to reduce friction during power transmission and improve the transmission efficiency of mechanical power by rolling. Ball bearings cannot withstand heavy loads and are more common in light industrial machinery. Ball bearings are also called ball bearings.

[0098] Through the above settings, the seat 2 can rotate relative to the support column 12, enriching the functions of the VR somatosensory chair of the present application, and the user can also rotate the body to enhance the user's comfort on the VR somatosensory chair. The angle detection device 3 is located on the inner side of the inner steel ring of the ball bearing 21, that is, the angle detection device 3 is located at the center of the side surface of the seat 2 facing the support column 12, so that the rotation angle detected by the angle detection device 3 can be more accurate, and the angle detection device 3 can be hidden on the inner side of the inner steel ring of the ball bearing 21, making the appearance of the VR somatosensory chair more concise and beautiful.

[0099] In some embodiments, reference Figure 6 The support column 12 includes a first support tube 121 and a second support tube 122. The first support tube 121 is connected to the base 11, and the second support tube 122 is connected to the seat 2. The second support tube 122 is coaxially connected to the first support tube 121, and in the axial direction of the second support tube 122, the second support tube 122 is movable relative to the first support tube 121 to adjust the length of the support column 12. In this way, the length of the support column 12 can be adjusted, so that the height of the VR somatosensory chair can be adjusted, which can adapt to people of different heights sitting on the VR somatosensory chair, which is conducive to enhancing the applicability of the VR somatosensory chair of the embodiment of the present application.

[0100] In some embodiments, the specific implementation of adjusting the length of the support column 12 may be: a plurality of first positioning holes 1210 are opened on the first support tube 121, and a plurality of second positioning holes 1220 are opened on the second support tube 122, and the length of the support column 12 is adjusted by inserting the positioning pin 123 into different first positioning holes 1210 and second positioning holes 1220.

[0101] In some embodiments, in addition to using the above-mentioned structure to adjust the length of the support column 12, the specific implementation method for adjusting the length of the support column 12 may also be: a cylinder is set on the base 11, the first support tube 121 is sleeved on the output shaft of the cylinder, and the second support tube 122 is coaxially connected to the output shaft of the cylinder. In this way, the second support tube 122 can be extended or retracted relative to the first support tube 121 by driving the output shaft of the cylinder to extend or retract, thereby adjusting the length of the support column 12 and realizing the height adjustment of the VR somatosensory chair.

[0102] In some embodiments, reference Figure 1 and Figure 4 , a wiring channel 110 is provided inside the base 11, and the wiring channel 110 is connected to the first support tube 121; the wireless communication unit 4 is arranged in the first support tube 121, and the wireless communication unit 4 is connected to a power line 41, and the power line 41 is located in the wiring channel 110, and the power line 41 is used to connect to an external power source 200. In this way, the wireless communication unit 4 can be hidden in the first support tube 121, which does not affect the overall appearance of the VR somatosensory chair, and the pressure sensor 20 and the angle detection device 3 can be connected to the wireless communication unit 4 through wires, and the wires can be arranged in the first support tube 121 and the second support tube 122, which reduces the probability of the wires being damaged and torn off.

[0103] In some embodiments, reference Figure 7 The VR somatosensory chair also includes a foot signal sensing board 8 and a pedal 9, both of which are electrically connected to the wireless communication unit 4; the foot signal sensing board 8 is arranged adjacent to the support seat 1, and the foot signal sensing board 8 is used to receive the foot movement signal of the user sitting on the seat 2; the pedal 9 is arranged on the foot signal sensing board 8, and the pedal 9 is inclined relative to the foot signal sensing board 8, and the pedal 9 is used to receive the stepping force signal of the foot of the user sitting on the seat 2.

[0104] Through the above settings, the foot signal sensing plate 8 can sense the action signal of the user's foot and obtain the user's foot movement. The pedal 9 can be pressed by the user's foot, and the pedal 9 can feel the force of the user's foot pressing, so that the user can also issue operation instructions through the foot, effectively increasing the operation instructions that the user can issue in the VR somatosensory seat. The pedal 9 is tilted relative to the foot signal sensing plate 8, which is more convenient for the user's foot to press. For example, in a VR game, the user's pressing of the pedal 9 can be used as an operation instruction to control the VR character in the game to jump, and the user's stepping on the foot signal sensing plate 8 can be used as an operation instruction to control the VR character in the game to accelerate and move. Of course, it is not limited to this. If it is in a VR racing car, the user's pressing of the pedal 9 can also be used as an operation instruction to control braking or acceleration. It can be set in advance on the VR device 100 according to the user's habits.

[0105] refer to Figure 2 An embodiment of the present application provides an interactive system for a VR somatosensory chair, including a VR somatosensory chair and a VR device 100 as in any of the above embodiments, wherein the VR device 100 is communicatively connected to a wireless communication unit 4, and the VR device 100 is used to receive information sent by the wireless communication unit 4 and perform preset control on the VR information, wherein the VR information includes VR characters and VR scenes.

[0106] The detailed structure of the VR somatosensory chair can refer to the above-mentioned embodiments and will not be repeated here; it can be understood that since the above-mentioned VR somatosensory chair is used in the present application, the embodiments of the present application include all technical solutions of all embodiments of the above-mentioned VR somatosensory chair, and can achieve the technical effects achieved by the above-mentioned technical solutions.

[0107] refer to Figure 8 The embodiment of the present application provides a control method for a VR somatosensory chair, wherein the VR somatosensory chair is a VR somatosensory chair as in any of the above embodiments, comprising the following steps:

[0108] S101 . Establish a rectangular coordinate system, and calibrate the two-dimensional coordinates of each pressure sensor 20 in the rectangular coordinate system.

[0109] Figure 8-1 Schematic diagram after completing step S101. Specifically, the multiple pressure sensors 20 in the embodiment of the present application are evenly arranged in a square array, wherein the number of pressure sensors 20 in each row is the same, and the number of pressure sensors 20 in each column is also the same. The position of each pressure sensor 20 is calibrated with a two-dimensional coordinate in a rectangular coordinate system, Figure 8-1 (X1, Y1) refers to the two-dimensional coordinates of one of the pressure sensors 20 in the rectangular coordinate system.

[0110] S102, calibrating the two-dimensional coordinates of the initial position of the center of gravity of the human body in a rectangular coordinate system.

[0111] After the user sits on the chair seat 2, the user adjusts to an upright sitting posture, and obtains the pressure values ​​of each pressure sensor 20 when the user is in the upright sitting posture. The position of the pressure sensor 20 with the largest pressure value is defaulted to be the initial position of the human center of gravity. In the embodiment of the present application, the origin position in the rectangular coordinate system can be used as the initial position of the human center of gravity. When the user's sitting posture changes from an upright sitting posture to other sitting postures, the origin position in the rectangular coordinate system is the initial position of the human center of gravity, and the position of the human center of gravity in other sitting postures is the position after the change of the human center of gravity.

[0112] The correct sitting posture is determined in the following manner: when the user sits on the seat 2, the pressure values ​​of each pressure sensor 20 are stable, and at the same time, the infrared sensor 7 on the seat back 6 determines that the distance between the back of the human body and the seat back 6 is mapped to the pressure sensor 20 within a certain range at the corresponding position on the seat 2 has a pressure signal, and the user's sitting posture is determined to be a correct sitting posture. The correct sitting posture defaults to the best state of the user's back being straight, and within a certain range, it means that the back can be slightly bent, so that the user can choose the most comfortable sitting posture.

[0113] Of course, the posture of the user after sitting on the seat 2 does not always change from the upright sitting posture. For example, if the user changes from the upright sitting posture to the first sitting posture, and then changes from the first sitting posture to the second sitting posture, the initial position of the change of the center of gravity of the human body in the process of changing from the upright sitting posture to the first sitting posture is the position of the center of gravity of the human body in the upright sitting posture; the initial position of the change of the center of gravity of the human body in the process of changing from the first sitting posture to the second sitting posture is the position of the center of gravity of the human body in the first sitting posture. That is, in the rectangular coordinate system, the initial position of the center of gravity of the human body is not limited to the origin, and can be set according to the specific changes in the sitting posture of the human body, as long as it can reflect the trend of the change of the center of gravity of the human body.

[0114] S103, when the sitting posture of the human body changes, obtaining the two-dimensional coordinates of the position of the changed center of gravity of the human body in the rectangular coordinate system.

[0115] S104. Determine the direction of change and the moving distance of the human body's center of gravity according to the two-dimensional coordinates of the initial position of the human body's center of gravity and the two-dimensional coordinates of the position of the human body's center of gravity after the change, so as to perform preset control on the VR information.

[0116] Through the above steps, the direction and distance of the change of the human body's center of gravity can be obtained more accurately, so that the VR information can be controlled to change accordingly according to the direction and distance of the change of the human body's center of gravity, so that the VR display screen is consistent with the user's expectation, thereby effectively avoiding the user from experiencing motion sickness when watching VR pictures, that is, adverse reactions such as dizziness or even vomiting, thereby improving the user experience.

[0117] For further reference, Fig. 9 , step S103 may include the following steps:

[0118] S1031. There are four pressure sensors 20, which are respectively located in the four directions of +X, -X, +Y and -Y in the rectangular coordinate system. The pressure values ​​of the four pressure sensors 20 are mapped to the rectangular coordinate system to obtain four mapping values ​​(P1x, P1y), (P2x, P2y), (P3x, P3y) and (P4x, P4y).

[0119] refer to Figure 9-1, the number of the multiple pressure sensors 20 can be four, and the four pressure sensors 20 are respectively located on the X-axis and Y-axis of the rectangular coordinate system, and the distances between the four pressure sensors 20 and the origin of the rectangular coordinate system are equal. At this time, the pressure values ​​of the four pressure sensors 20 are obtained, and the pressure values ​​of the four pressure sensors 20 are mapped to the rectangular coordinate system to obtain four mapping values ​​(P1x, P1y), (P2x, P2y), (P3x, P3y) and (P4x, P4y).

[0120] S1032. Calculate the two-dimensional coordinates (Px, Py) of the position after the center of gravity of the human body changes; wherein, Px = (P1x + P2x - P3x - P4x) / P1x + P2x + P3x + P4x; Py = (P1y + P4y - P2y - P3y) / P1y + P2y + P3y + P4y; P1x = P1y, P2x = P2y, P3x = P3y and P4x = P4y.

[0121] For further reference, Fig.10 , step S103 may also include the following steps:

[0122] S1103. Perform weighted averaging of the pressure values ​​of multiple pressure sensors 20 in the four directions of +X, -X, +Y and -Y in the rectangular coordinate system to obtain four weighted average values ​​(P1x, P1y), (P2x, P2y), (P3x, P3y) and (P4x, P4y).

[0123] The number of the plurality of pressure sensors 20 is greater than four, and reference may be made to Figure 8-1 Arrange them in the following way, such as Figure 10-1 As shown, the pressure values ​​of the multiple pressure sensors 20 on the +X axis are weighted averaged to obtain a weighted average value (P1x, P1y), the pressure values ​​of the multiple pressure sensors 20 on the +Y axis are weighted averaged to obtain a weighted average value (P2x, P2y), the pressure values ​​of the multiple pressure sensors 20 on the -X axis are weighted averaged to obtain a weighted average value (P3x, P3y), and the pressure values ​​of the multiple pressure sensors 20 on the -Y axis are weighted averaged to obtain a weighted average value (P4x, P4y).

[0124] S2103. Calculate the two-dimensional coordinates (Px, Py) of the position after the center of gravity of the human body changes; wherein, Px = (P1x + P2x - P3x - P4x) / P1x + P2x + P3x + P4x; Py = (P1y + P4y - P2y - P3y) / P1y + P2y + P3y + P4y; P1x = P1y, P2x = P2y, P3x = P3y and P4x = P4y.

[0125] Figure 10-1The two intersecting lines in the middle represent the linear graph of Px and Py in the two-dimensional coordinates (Px, Py) of the position after the center of gravity of the human body changes in the rectangular coordinate system, and the intersection of the two intersecting lines is the position after the center of gravity of the human body changes. In this application, the VR somatosensory chair replaces the traditional operating handle to control VR information, and Px and Py are two control signals, which are equivalent to the two input signals of the traditional handle.

[0126] For further reference, Fig.11 Step S103 may further include the following steps:

[0127] S10311. Detect the pressure value of each pressure sensor 20 in real time.

[0128] S10312. Determine the position of the pressure sensor 20 with the highest pressure value among the multiple pressure sensors 20 as the position of the center of gravity of the human body, so as to obtain the two-dimensional coordinates (Px, Py) of the position after the center of gravity of the human body changes.

[0129] It should be noted that after obtaining the two-dimensional coordinates (Px, Py) of the position after the human body's center of gravity changes, it can be converted into a control signal input into the VR device 100. The position change of the human body's center of gravity relies on the pressure sensor 20 to match the actual distance between the pressure sensors 20 to obtain the actual change distance of the human body's center of gravity, and accordingly magnify, equalize or reduce the distance multiple in the VR scene. The accuracy of the two-dimensional coordinates of the position after the human body's center of gravity changes obtained by the above method depends on the setting density of the pressure sensor 20.

[0130] In some embodiments, when the sitting posture of a human body changes, the specific implementation method of obtaining the two-dimensional coordinates of the position after the center of gravity of the human body changes in the rectangular coordinate system can also be: obtaining the pressure value M of the pressure sensor 20 located at the center position among multiple pressure sensors 20 in the human body sitting posture; when the sitting posture of the human body changes, the pressure value of the pressure sensor 20 located at the center position changes to N; according to M*(MN) / 90, the angle α between the center of gravity of the human body and the pressure sensor 20 located at the center position is calculated; according to N and α, the horizontal displacement L of the center of gravity of the human body is calculated to obtain the two-dimensional coordinates (Px, Py) of the position after the center of gravity of the human body changes. In this way, the posture of the human body can be accurately identified and the operation screen in the VR scene can be accurately controlled.

[0131] refer to Fig.12 The present application embodiment provides a method for controlling a VR somatosensory chair, comprising the following steps:

[0132] S201 , establishing a rectangular coordinate system, and calibrating the two-dimensional coordinates of each pressure sensor 20 in the rectangular coordinate system.

[0133] S202, calibrating the two-dimensional coordinates of the initial position of the center of gravity of the human body in a rectangular coordinate system.

[0134] S203, when the sitting posture of the human body changes, obtaining the two-dimensional coordinates of the position of the changed center of gravity of the human body in the rectangular coordinate system.

[0135] S204: Determine the direction of change and the moving distance of the human body's center of gravity according to the two-dimensional coordinates of the initial position of the human body's center of gravity and the two-dimensional coordinates of the position of the human body's center of gravity after the change.

[0136] S205, establishing a three-dimensional coordinate system, where the center of gravity of the human body is located on a spherical surface with the two-dimensional coordinate of the initial position of the center of gravity of the human body as the center of the sphere and the preset distance as the radius.

[0137] It should be noted that adding the third dimension to the above rectangular coordinate system can form a three-dimensional coordinate system to mark the position change of the center of gravity of the human body in the three-dimensional space; Figure 12-1 As shown, in the three-dimensional coordinate system, the initial position of the center of gravity of the human body is on the Z axis of the three-dimensional coordinate system, and the three-dimensional movement direction of the center of gravity of the human body in the three-dimensional coordinate system is always on a spherical surface with the distance from the initial position of the center of gravity to the origin as the radius.

[0138] Among them, the distance from the origin to the initial position of the human body's center of gravity on the Z axis can be determined based on the distance from the origin to the center of gravity of different people sitting on the seat 2 in an upright position. Specifically, in the embodiment of the present application, since the human body relies on the eyes to receive external visual signals, the human head can be used as the initial position of the human body's center of gravity, and the distance from the origin to the initial position of the human body's center of gravity on the Z axis is the distance from the origin to the head of the user sitting on the seat 2 in an upright position. Since different users have different heights, the initial position of the human body's center of gravity on the Z axis after sitting on the seat 2 in an upright position is also different. Therefore, the initial position of the human body's center of gravity can be manually input to the VR device after the user sits on the seat 2, or a human head height measuring device can be set on the seat 2 or the chair back 6, and the human head height measuring device is electrically connected to the wireless communication unit 4, so that the human head height, that is, the distance from the initial position of the human body's center of gravity to the origin, can be automatically measured and sent to the VR device 100.

[0139] Since the three-dimensional movement direction of the human body's center of gravity in the three-dimensional coordinate system is always on a sphere with the distance from the initial position of the center of gravity to the origin as the radius, in the three-dimensional coordinate system, the initial position of the human body's center of gravity is any point in the Z-axis direction except the origin in an upright sitting position; the higher the height of the initial position of the center of gravity within the effective range, the higher the recognition accuracy of subsequent changes in the human body's center of gravity in the Z-axis direction.

[0140] S206. Substitute the two-dimensional coordinates (Px, Py) of the position after the center of gravity of the human body changes into the three-dimensional coordinate system to determine the three-dimensional coordinates (Px, Py, Pz) of the position after the center of gravity of the human body changes, so as to perform preset control on the VR information.

[0141] Because the trajectory of the human body's center of gravity is on the spherical surface, and since the two-dimensional coordinates (Px, Py) of the position of the human body's center of gravity after the change in the rectangular coordinate system are obtained, the center of gravity height coordinates Pz of the human body's center of gravity on the spherical surface can be directly substituted into the three-dimensional coordinate system, thereby obtaining the three-dimensional coordinates (Px, Py, Pz) of the position of the human body's center of gravity after the change. In this way, the changing trend of the human body's center of gravity in three-dimensional space can be obtained, so as to accurately control the front, back, left, right, and pitch of the corresponding character in the VR scene, which greatly improves the control accuracy and effectively avoids motion sickness in users.

[0142] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A VR somatosensory chair, characterized in that: include: Support seat (1); A chair seat (2) rotatably connected to the support seat (1); A plurality of pressure sensors (20) are arranged in an array on a side surface of the seat (2) facing away from the support seat (1), and the pressure sensors (20) are used to detect the pressure applied by a user sitting on the seat (2); A wireless communication unit (4) is electrically connected to the pressure sensor (20), and the wireless communication unit (4) is used to communicate with the VR device (100) to send information for presetting VR information to the VR device (100), wherein the VR information includes a VR character and a VR scene.

2. The VR somatosensory chair according to claim 1, characterized in that: The plurality of pressure sensors (20) are evenly arranged in a square array or evenly arranged in a circular array; And / or, the VR somatosensory chair further comprises a chair back (6), the chair back (6) being connected to the edge of the chair seat (2), and a side surface of the chair back (6) close to the chair seat (2) being provided with an infrared sensor (7) electrically connected to the wireless communication unit (4); The infrared sensor (7) is strip-shaped, and the length direction of the infrared sensor (7) and the height direction of the chair back (6) are perpendicular to each other.

3. The VR somatosensory chair according to claim 2, characterized in that: It also includes a seat plate (5), wherein the seat plate (5) is connected to the chair seat (2) via an elastic member (51), and the seat plate (5) and the chair seat (2) are parallel to each other; A plurality of pressure protrusions (52) are provided on a surface of one side of the seat plate (5) facing the seat (2), and the plurality of pressure protrusions (52) are respectively arranged in one-to-one correspondence with the plurality of pressure sensors (20), so that when the seat plate (5) is pressed toward the seat (2), the pressure protrusions (52) apply pressure to the pressure sensors (20).

4. The VR somatosensory chair according to claim 3, characterized in that: The seat plate (5) is arranged concentrically with the seat (2), and the elastic member (51) is respectively connected to the center position of a side surface of the seat plate (5) facing the seat (2) and the center position of a side surface of the seat (2) facing the seat plate (5); And / or, the height of the pressure protrusion (52) is smaller than the length of the elastic member (51) when it is not compressed, and the height of the pressure protrusion (52) is larger than the length of the elastic member (51) after it is compressed.

5. The VR somatosensory chair according to any one of claims 1 to 4, characterized in that: It also includes an angle detection device (3) disposed on the seat (2), the angle detection device (3) being electrically connected to the wireless communication unit 4, and the angle detection device (3) being used to detect the angle of rotation of the seat (2) relative to the support seat (1); The support seat (1) comprises a base (11) and a support column (12) connected to the base (11) along the thickness direction of the base (11); A ball bearing (21) is provided at the center of a side surface of the seat (2) facing the support column (12), and the ball bearing (21) is connected to a side surface of the support column (12) away from the base (11); The angle detection device (3) is located on the inner side of the inner steel ring of the ball bearing (21).

6. An interactive system for a VR somatosensory chair, characterized in that: include: The VR somatosensory chair as described in any one of claims 1 to 5; A VR device (100) is communicatively connected to the wireless communication unit (4), and the VR device (100) is used to receive information sent by the wireless communication unit (4) and perform preset control on VR information, wherein the VR information includes VR characters and VR scenes.

7. A method for controlling a VR somatosensory chair, characterized in that: The VR somatosensory chair is a VR somatosensory chair as claimed in any one of claims 1 to 5, comprising: Establishing a rectangular coordinate system, and calibrating the two-dimensional coordinates of each of the pressure sensors in the rectangular coordinate system; Calibrate the two-dimensional coordinates of the initial position of the center of gravity of the human body in the rectangular coordinate system; When the sitting posture of the human body changes, obtaining the two-dimensional coordinates of the position of the changed center of gravity of the human body in the rectangular coordinate system; According to the two-dimensional coordinates of the initial position of the human body's center of gravity and the two-dimensional coordinates of the position after the human body's center of gravity changes, the direction of change and the moving distance of the human body's center of gravity are determined to preset the VR information.

8. The control method according to claim 7, characterized in that: When the sitting posture of the human body changes, obtaining the two-dimensional coordinates of the position of the changed center of gravity of the human body in the rectangular coordinate system includes: There are four pressure sensors, which are respectively located in the four directions of +X, -X, +Y and -Y in the rectangular coordinate system. The pressure values ​​of the four pressure sensors are mapped to the rectangular coordinate system to obtain four mapping values ​​(P1x, P1y), (P2x, P2y), (P3x, P3y) and (P4x, P4y); Alternatively, weighted averages are performed on the pressure values ​​of the plurality of pressure sensors in the four directions of +X, -X, +Y and -Y in the rectangular coordinate system to obtain four weighted averages (P1x, P1y), (P2x, P2y), (P3x, P3y) and (P4x, P4y); Calculate the two-dimensional coordinates (Px, Py) of the position after the center of gravity of the human body changes; wherein, Px = (P1x + P2x - P3x - P4x) / P1x + P2x + P3x + P4x; Py = (P1y + P4y - P2y - P3y) / P1y + P2y + P3y + P4y; P1x = P1y, P2x = P2y, P3x = P3y and P4x = P4y.

9. The control method according to claim 7, characterized in that: When the sitting posture of the human body changes, obtaining the two-dimensional coordinates of the position of the changed center of gravity of the human body in the rectangular coordinate system includes: Detecting the pressure value of each of the plurality of pressure sensors in real time; The position of the pressure sensor with the highest pressure value among the multiple pressure sensors is determined as the position of the center of gravity of the human body, so as to obtain the two-dimensional coordinates (Px, Py) of the position after the center of gravity of the human body changes.

10. The control method according to any one of claims 7 to 9, characterized in that: After determining the direction of change and the moving distance of the human body's center of gravity according to the two-dimensional coordinates of the initial position of the human body's center of gravity and the two-dimensional coordinates of the position of the human body's center of gravity after change, the method further includes: A three-dimensional coordinate system is established, where the center of gravity of the human body is located on a spherical surface with the two-dimensional coordinate of the initial position of the center of gravity of the human body as the center of the sphere and the preset distance as the radius; The two-dimensional coordinates (Px, Py) of the position after the center of gravity of the human body is changed are substituted into the three-dimensional coordinate system to determine the three-dimensional coordinates (Px, Py, Pz) of the position after the center of gravity of the human body is changed.

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