Virtual reality head-mounted display device
By using an ultrasonic array plate and a three-axis accelerometer to perform real-time alignment between the external space and the virtual model scene, combined with an adaptive adjustment mounting bracket, the problem of image lag in virtual reality head-mounted displays has been solved, improving synchronization accuracy and wearing comfort.
Patent Information
- Application Number
- CN202511473580.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-15
- Publication Date
- 2026-01-23
AI Technical Summary
Existing virtual reality head-mounted displays are prone to causing dizziness after prolonged use, mainly due to screen lag causing a conflict between the vestibular and visual systems. Current technologies have tried to improve this by using hardware acceleration, optimizing algorithms, and reducing rendering load, but these methods are costly.
An ultrasonic array plate and a triaxial accelerometer are used to collect external spatial coordinates in real time and perform alignment processing with the activity space of the virtual model scene. Combined with an adaptively adjustable mounting bracket, the view of the virtual model scene is quickly matched through ultrasonic feed signals and acceleration signals, reducing hardware load and latency.
It effectively reduces hardware load, lowers the latency between motion transitions and display system rendering, improves synchronization accuracy, reduces frame drops, and adaptively adjusts the mounting bracket to improve wearing comfort.
Smart Images
Figure CN121386196A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the technical field of virtual reality equipment, and particularly relates to a virtual reality head-mounted display device. BACKGROUND
[0002] VR glasses, namely VR headsets, belong to virtual reality head-mounted display devices. The VR headset is a head-mounted display device that closes the vision of a person to the outside world, cooperates with a closed earphone, and guides the user to have a feeling of being in a virtual environment. The display principle is that the left and right eye screens respectively display the images of the left and right eyes, and the human eye obtains such different information to generate a stereoscopic effect in the brain.
[0003] The virtual reality head-mounted display device (HMD) realizes immersive experience through multi-module cooperation, and its core components include a display system, a lens assembly, a sensor array and a computing unit. In the display system, a binocular OLED or LCD screen is used to project different images to the left and right eyes, and stereoscopic vision is formed by using the parallax of the human eye. For example, the Oculus Rift S has a single-eye resolution of 1280x1440, and the picture tearing is reduced by fast refreshing (usually above 90Hz). The lens assembly (such as a Fresnel lens) focuses the screen light to the human eye, while expanding the field of view (FOV). The FOV of the HTC Vive Pro is 110°, close to the natural field of view of the human eye. The sensor array includes an inertial measurement unit (IMU) and an external positioning system. The inertial measurement unit integrates a gyroscope, an accelerometer and a magnetometer to track the head rotation (angular velocity) and translation (acceleration) in real time. The external positioning system realizes millimeter-level spatial positioning through laser scanning and infrared cameras, and supports the user to move freely within a range of 6m x 6m. As for the computing unit, the split device (such as PSVR) transfers the computing task to an external host, while the all-in-one machine is built-in with a high operation chip, integrates a GPU, a CPU and an AI accelerator, and independently processes rendering and tracking.
[0004] The operation of the VR device is a closed-loop system from action to picture, and the operation process can be divided into four stages: (1) action capture, the IMU samples the head posture data at a frequency of 1000 Hz, and the external positioning system (such as a camera) supplements the absolute position information at a frequency of 60 Hz, both of which are fused through Kalman filtering to generate an accurate 6DoF trajectory. (2) View calculation, the rendering engine adjusts the virtual camera parameters (position, rotation, view frustum) in real time according to the head trajectory to ensure that the picture is synchronized with the user's view. For example, when the user turns his head, the system needs to complete the rendering of the new view within 11 ms (calculated at a refresh rate of 90 Hz). (3) Image rendering, asynchronous time warp (ATW): when the GPU rendering delay, through the distortion of the last frame image to compensate for head movement, reduce the picture lag; gaze point rendering: using eye tracking technology, only the central area of the field of view is rendered with high precision, and the peripheral area is reduced in resolution, saving 30%-50% of the computing power. (4) Display output, the screen alternately displays the left and right eye images at a fixed refresh rate (such as 90Hz), and cooperates with liquid crystal shutter glasses or OLED pixel self-luminous technology to realize stereoscopic vision.
[0005] However, the current core part of the virtual reality head-mounted display device is how the user can use it for a long time without dizziness. The reason for dizziness is that the picture lags, causing the conflict between the vestibular system and the visual system, leading to dizziness. The root cause of the picture lag is that the data obtained by the sensor that collects head movements needs to be delayed for action transformation processing, and the delay caused by the display system rendering and display guided by the action transformation processing information, especially in the display of complex scenes, the picture lag is more serious.
[0006] In order to improve this problem, the existing technology often uses hardware acceleration, algorithm optimization and system-level optimization, especially in the hardware acceleration mode, the Snapdragon XR2 chip integrates a special visual processing unit (VPU) that supports 8K / 90fps rendering, with computing power improved by 2 times compared to the previous generation, and the application loading time is shortened by 50% with the cooperation of UFS 3.1, reducing the waiting delay. In terms of algorithm optimization, asynchronous space warp (ASW) is used to increase the frame rate from 45Hz to 90Hz through frame insertion technology, reducing the rendering load; as for the system-level optimization, through VRR (variable refresh rate), the screen refresh rate is synchronized with the GPU output, eliminating picture tearing, and Foveated Rendering is used in combination with eye tracking, only the central area of the field of view is rendered with high precision, and the peripheral area is blurred, saving computing power.
[0007] It can be seen that, in order to improve the problem of picture lag, the prior art mainly uses hardware acceleration, optimization algorithm and reduction of rendering load to realize, but in general, the improvement is mainly through speeding up the hardware processing rate. On the basis of long-time guarantee of high hardware processing rate, the cost of hardware development and use is increased.
[0008] Therefore, the application provides a virtual reality head-mounted display device for effectively improving the problem of picture lag. SUMMARY
[0009] The application aims to provide a virtual reality head-mounted display device to solve the problems in the prior art.
[0010] To achieve the above-mentioned purpose, the application provides the following technical scheme: a virtual reality head-mounted display device, comprising a mirror box, an OLED display arranged on one side of the mirror box, a VR lens group arranged on one side of the mirror box, a side support cover arranged between the VR lens group and the OLED display, a support shell arranged in communication with one side of the mirror box, an inner pressure ring arranged on one side in the support shell and pressed against the edge of the VR lens group, an outer pressure cover arranged in the support shell and pressed against one side of the inner pressure ring, a blue light prevention lens group arranged on the outer pressure cover, a contact soft cover arranged on the other side of the support shell, and a mounting hoop frame mounted on the support shell and used for mounting the head-mounted display device on the head, one side of the mirror box is provided with an ultrasonic array board, the mirror box is provided with a CDD camera at a position between the ultrasonic array boards, the mounting hoop frame is provided with a three-axis acceleration sensor, one side in the mirror box is provided with a development board one, and the bottom of the mirror box is provided with an ultrasonic array processing development board, which is used for converting the ultrasonic feed point signal obtained by the ultrasonic array board in real time into an array point signal. The development board one comprises a collection module and a space planning module, the collection module is used for corresponding planning of the array point signal obtained by the ultrasonic array processing development board, and is used for receiving the acceleration signal with azimuth intervention from the three-axis acceleration sensor in real time, and the space planning module is used for marking each coordinate point of the real space model and the virtual model corresponding to the planning of the collection module, and controlling the virtual model to change in distance and direction according to the acceleration signal feedback information.
[0011] Compared with the prior art, the application has the following advantages: The virtual reality head-mounted display device in the application, the external space coordinates are matched with the virtual model scene activity space in advance, when using, the array point signal of the ultrasonic obtained in real time and the acceleration signal with the direction intervention enter, the virtual model scene view can be matched quickly, and the virtual model scene view is moved along with the line of sight, therefore, the hardware instantaneous load processing amount is greatly reduced, and the frame breaking condition is not easy to appear, the synchronization precision is high, the delay caused by the action conversion processing and the display system rendering handover processing is reduced, and the picture lag problem is more effectively improved.
[0012] The virtual reality head-mounted display device in the application, through the prior collection of the comfortable hoop pressure threshold information of the user wearing, when wearing, the head-mounted display device can be effectively fixed on the head for use by adaptively adjusting the hoop degree of the head-mounted hoop frame according to the comfortable state, reducing the manual adjustment amount, and being more convenient. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 It is a front view schematic diagram of the application;
[0014] Figure 2 It is a front view schematic diagram of the application; Figure 1
[0015] Figure 3 It is a front view schematic diagram of the application; Figure 1
[0016] Figure 4 It is a front view schematic diagram of the application; Figure 2
[0017] Figure 5 It is a front view schematic diagram of the application;
[0018] Figure 6 It is a front view schematic diagram of the application;
[0019] Figure 7 It is a front view schematic diagram of the application;
[0020] Figure 8 It is a front view schematic diagram of the application;
[0021] Figure 9 It is a front view schematic diagram of the application;
[0022] Figure 10 It is a front view schematic diagram of the application;
[0023] In the figure: 1 mirror box, 2 ultrasonic array board, 4 development board one, 5 opening and closing button, 6 ultrasonic array processing development board, 7 mounting plate, 8 development board two, 9 OLED display, 10 side support cover, 11 VR lens group, 12 support shell, 13 inner pressure ring, 14 outer pressure cover, 15 anti-blue light lens group, 16 contact soft cover, 17 buckle, 18 soft filling ring, 19 support piece, 20 pressure sensing part one, 21 support sleeve one, 22 movable strip, 23 motor one, 24 gear one, 25 rear pressure soft sleeve, 26 pressure convex strip, 27 pressure sensing part two, 29 middle section, 30 angle encoder, 31 support sleeve two, 32 mounting edge piece, 33 motor two, 34 gear two, 35 soft rack, 36 top pressure frame, 37 pressure sensing part three, 38 three-axis acceleration sensor, 39 bottom pressure soft sleeve, 40 pressure sensing part four. DETAILED DESCRIPTION
[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
[0025] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 A virtual reality head-mounted display device includes a mirror box 1, an OLED display 9 fixed by screws on the inner middle side of the mirror box 1, a VR lens group 11 fixed by screws on one side of the mirror box 1, a side support cover 10 fixed by screws between the VR lens group 11 and the OLED display 9, a support shell 12 arranged in communication with the right side of the mirror box 1, an inner pressure ring 13 slidably inserted into one side of the support shell 12 and tightly pressed against the edge of the VR lens group 11, an outer pressure cover 14 slidably inserted into the support shell 12 and tightly pressed against one side of the inner pressure ring 13, an anti-blue light lens group 15 fixed by screws on the outer pressure cover 14, a contact soft cover 16 slidably inserted into the receiving slot on the right side of the support shell 12, and a mounting hoop frame mounted on the support shell 12 and used to mount the head-mounted display device on the head, an ultrasonic array board 2 fixed by screws on the left side of the mirror box 1, a CDD camera 3 embedded on the mirror box 1 and located between the ultrasonic array boards 2, a three-axis acceleration sensor 38 embedded on the mounting hoop frame, a development board one 4 fixed by screws in the left side of the mirror box 1, and an ultrasonic array processing development board 6 fixed by screws at the bottom of the mirror box 1, wherein the ultrasonic array processing development board 6 is used to convert the ultrasonic feed point signals obtained by the ultrasonic array board 2 in real time into array point signals. The SPI interface of the two OLED displays 9 is connected to the video signal output end of the OLED player through a serial line, and the main power input end of the OLED player is connected to the external power supply through a cable.
[0026] The development board one 4 includes a collection module and a space planning module. The collection module is used for corresponding planning of the array point signals obtained by the ultrasonic array processing development board 6, and real-time receiving of the acceleration signals with azimuth intervention from the three-axis acceleration sensor 38. The space planning module is used for corresponding marking of each coordinate point of the real space model and the virtual model planned by the collection module, and controlling the virtual model to change in distance and direction according to the acceleration signal feedback information.
[0027] Under such a processing mode, the user can effectively mark each coordinate point of the real space model and the virtual model before use, so that when the user wears the head-mounted display device to change the position in each direction, the virtual model can display the interface that can be synchronized and spread in the same direction.
[0028] Referring to Figure 1 , Figure 2 , Figure 3 and Figure 4 , the top of the mirror box 1 is fixed with an on-off button 5. The on-off button 5 is used to control the on-off of the head-mounted display device. One side of the on-off button 5 is connected to the external 5V DC power supply through a cable, and the other side of the on-off button 5 is connected to the I / O power supply pin of the development board one 4 and the development board two 8 through a cable.
[0029] Referring to Figure 7 , the collection module includes an ultrasonic array point signal receiving module, an acceleration signal receiving module, and an external space element set planning module. The signal output pin of the ultrasonic array processing development board 6 is connected to the signal input pin of the ultrasonic array point signal receiving module through a signal stringing cable. The ultrasonic array point signal receiving module is used to receive the array point signals from the ultrasonic array processing development board 6. The transmission line of the three-axis acceleration sensor 38 is connected to the signal input pin of the acceleration signal receiving module. The acceleration signal receiving module is used to real-time receive the acceleration signals with azimuth intervention from the three-axis acceleration sensor 38. The ultrasonic array point signal receiving module and the acceleration signal receiving module are connected to the external space element set planning module. The external space element set planning module is used for full-dimension planning space establishment. The external space element set planning module is also used for full-area marking of the acceleration signals with azimuth intervention in the full-dimension planning space.
[0030] Referring to Figure 7The space configuration to the simulation module includes a real-time storage module, a space point establishment module, a point processing module, a domain point change analysis module, a guide bar processing module and a screen control point processing module. The signal input pin of the real-time storage module is connected to an external computer through a long transmission line. The real-time storage module is used to store the virtual space model input by the external device and achieve a control protocol. The virtual scene in the real-time storage module can be selected by the computer to enter the space point establishment module to establish the space point. The real-time storage module is connected to the space point establishment module. The space point establishment module is used to establish the points in the virtual space model. The space point establishment module is connected to the point processing module. The point processing module is connected to the external space element set planning module. The point processing module compares the virtual space model with the full-dimensional planning space of the external space element set planning module point by point. The acceleration signal with the direction intervention is corrected to obtain a full-domain point model. The point processing module is connected to the domain point change analysis module. The point processing module carries the full-domain point model to the domain point change analysis module. When the point processing module outputs the real-time array point signal, the domain point change analysis module cooperates with the direction indication and acceleration change indication of the acceleration signal with the direction intervention to obtain the virtual space visual track.
[0031] The outer space selects a customized virtual reality activity space bin with a size of 6m*6m*4m. In order to better identify feedback, the walls of the virtual reality activity space are decorated in different styles and have different levels of horizontality. Before the head-mounted display device is formally put into use, the developer installs the head-mounted display device by using a five-axis mechanical arm, and performs full-circle scanning on six areas in the middle of the bottom of the customized virtual reality activity space bin. During the scanning process, the time of emission and reception of the ultrasonic wave emitted by each ultrasonic emission and reception element in the ultrasonic array board 2 is recorded by the ultrasonic array processing development board 6, and the distance is calculated by using a sound distance calculation formula. Therefore, each ultrasonic feedback point signal actually carries distance data. The scanning process needs to meet the following conditions: each wall of the customized virtual reality activity space is collected; by full-circle scanning, a three-dimensional space model of the interior space of the customized virtual reality activity space bin is obtained. After the three-dimensional space model is input into a computer, dense coordinate points are established at a distance of 0.03mm in the obtained three-dimensional space model, and the distances of the coordinate points to the points of each wall of the customized virtual reality activity space bin are calculated and stored. Under the intervention of the acceleration signal with the direction, a full-circle view signal element set is established at each coordinate point and is stored. The three-dimensional space models obtained from the six areas are combined by using the array point coincidence method on the computer, the repeated parts are removed, the missing parts are combined, and a complete three-dimensional space model is formed. The dense coordinate points are divided into coincident parts and non-coincident parts, the same coordinate points in the non-coincident parts are calculated by using the three-axis coordinate data, the average is calculated, and the coordinate points in the non-coincident parts are reconstructed according to the calculated average. The final coordinate points are: ((x1+x2+x3+x4+x5+x6) / 6,(y1+y2+y3+y4+y5+y6) / 6,(z1+z2+z3+z4+z5+z6) / 6). Finally, the complete three-dimensional space model established in the computer is stored in the outer space element set planning module.
[0032] After the user wears the device, when the virtual model scene is selected, the space point establishment module establishes dense coordinate points in the activity area of the virtual model scene at a distance of 0.03mm. The alignment processing module imports the complete three-dimensional space model obtained from the outer space element set planning module into the activity area of the selected virtual model scene. The alignment processing module aligns the complete three-dimensional space model with the points in the activity area of the selected virtual model scene. Further, the dense coordinate points of the complete three-dimensional space model are individually and correspondingly aligned with the dense coordinate points of the activity area of the virtual model scene. During the alignment process, the complete three-dimensional space model is quickly positioned in the activity area of the virtual model scene. The virtual scene demonstration starts, and the domain point change analysis module starts to run. The real-time collected ultrasonic feed point signal and the acceleration signal with the azimuth intervention are quickly intervened in the domain point change analysis. Further, the real-time collected ultrasonic feed point signal is analyzed to obtain a distance data set, and the acceleration signal with the azimuth intervention is analyzed to obtain a motion direction signal of the head-mounted display device. The instantaneous motion direction signal and the distance data set are matched with dense coordinate points in a complete three-dimensional space model to obtain matched coordinate points. Since each coordinate point of the dense coordinate points is attached to a distance from each point of each wall surface of the customized virtual reality activity space bin and a full-range viewing direction signal element set, a coordinate point set is quickly intercepted in the dense coordinate points by a quick selection algorithm, and the coordinate point set is released from the module set capture frame. Since a double-view capture centering frame is arranged at the center position of the module set capture frame, and a centering suppression touch point is arranged in the double-view capture centering frame, the centering suppression touch point instantaneously captures double-view coordinates, and the distance between the double-view coordinates is 60 mm. When the centering suppression touch point instantaneously captures the double-view coordinates, the instantaneous motion direction signal is matched with a corresponding viewing direction in the full-range viewing direction signal element set of the double-view coordinates to obtain actual viewing direction information in the double-view coordinates.
[0033] With the movement of the user and the head, the double-view coordinates and the actual viewing direction information in the double-view coordinates change. The domain point change analysis module collects the double-view coordinates and the actual viewing direction information in the double-view coordinates twice at 1 ms, and draws a visual trajectory in the dense coordinates.
[0034] Referring to Figure 7 and Figure 10 , the domain point change analysis module is connected to the guide bar processing module, the guide bar processing module is connected to the screen control point processing module, and the screen control point processing module is directly controlled by the guide bar processing module to move the display interface according to the visual trajectory.
[0035] The screen control point processing module is also connected to the real-time storage module. The video signal output pin of the real-time storage module is connected to the signal input end of the OLED player through a transmission line. The guide bar instructions for controlling the virtual model scene movement are derived by the guide bar processing module through the real-time generated visual trajectory. Not only does the virtual space in the real-time storage module enter the OLED player for playing, but also the virtual model scene view displayed by the two OLED displays 9 is moved in real time according to the user's line of sight direction.
[0036] Since the external space coordinates are matched with the virtual model scene activity space in advance, when the real-time acquired ultrasonic array point signal and the acceleration signal with the azimuth intervention enter, the virtual model scene view can be quickly matched, and the virtual model scene view can be moved with the movement of the line of sight. Therefore, the hardware instantaneous load processing amount is greatly reduced, frame breakage is not easy to occur, the synchronization accuracy is high, the delay caused by the action conversion processing and the display system rendering handover processing is reduced, and the picture lag problem is more effectively improved.
[0037] Referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , the contact soft cover 16 is clamped in the mounting groove provided on the right side of the support shell 12, the contact soft cover 16 is provided with a buckle 17, the mounting groove is provided with a buckle groove, and the buckle 17 is clamped in the buckle groove. The material of the contact soft cover 16 is silica gel, and the contact soft cover 16 is convenient to replace and install; the contact soft cover 16 is provided with a soft filling ring 18, the material of the soft filling ring 18 is sponge, the position close to the soft filling ring 18 in the contact soft cover 16 is filled with a support sheet 19, the material of the support sheet 19 is soft PCV, and the support sheet 19 is uniformly embedded with a pressure sensing part one 20. The pressure sensing part one 20 is a pressure-sensitive micro pressure sensing sheet, which is used for sensing the pressure on the orbital region.
[0038] Referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , the mounting hoop includes a support belt sleeve 21 integrally arranged on the front and rear sides of the support shell 12, a movable strip 22 is slidingly inserted in the support belt sleeve 21, a motor one 23 is screw-fixed on the support belt sleeve 21, the motor one 23 is a stepping motor, a gear one 24 is connected to the rotor shaft of the motor one 23 through an interference key, the support belt sleeve 21 is provided with a slot, the gear one 24 is inserted into the slot and engaged with a rack provided on the movable strip 22, a rear pressing soft sleeve 25 is bonded to the right side of the movable strip 22, a pressure convex strip 26 is uniformly and integrally arranged on the inner side of the rear pressing soft sleeve 25, a pressure sensing part two 27 is embedded in the pressure convex strip 26, and the pressure sensing part two 27 is a pressure-sensitive micro pressure sensing part. The pressure sensing part two 27 is used for sensing the pressure on the occipital region. By controlling the operation of the motor one 23, the gear one 24 drives the movable strip 22 to move transversely, so as to realize the tightening of the rear pressing soft sleeve 25 to the occipital region of the user, and when not in use, the rear pressing soft sleeve 25 can quickly be separated from the occipital region.
[0039] The movable strip 22 is integrally provided with a middle section 29, the middle section 29 is provided with a middle section groove, and an angle encoder 30 is adhered in the middle section groove by using resin glue. The movable shaft of the angle encoder 30 penetrates through the middle section 29 and is fixed by screw to support a sleeve 31. The front and rear sides of the sleeve 31 are integrally provided with mounting side pieces 32. The mounting side pieces 32 on the two sides are fixed by screw to alternately arrange a motor 33 above and below. The rotor shaft of the motor 33 is connected to a gear 34 by interference key. The sleeve 31 is provided with a through groove, and a soft rack 35 is slidably arranged in the sleeve 31. The material of the soft rack 35 is soft PVC. The gear 34 penetrates through the through groove and engages with the soft rack 35. The angle encoder 30 is used to detect the angle change of the sleeve 31, so as to select the angle of the soft rack 35 when the user is more comfortable.
[0040] By controlling the operation and self-locking of the motor 33 in each area, the soft rack 35 in the upper and lower positions can be discharged through the through groove, and the soft rack 35 can also move upward or downward, so as to better control the operation of the soft rack 35 to tighten or release the user's head and chin area.
[0041] Bolts are fixed on the top of the soft rack 35 to support a top pressing frame 36. The top pressing frame 36 is uniformly provided with pressure sensing elements 37, which are pressure sensitive micro pressure sensing sheets. A three-axis acceleration sensor 38 is fixed by screw on the upper end center of the top pressing frame 36. The bottom of the soft rack 35 is adhered by using resin glue to support a bottom pressing sleeve 39. The bottom pressing sleeve 39 is uniformly provided with pressure sensing elements 40, which are pressure sensitive pressure sensing sheets.
[0042] Referring to Figure 2 and Figure 7, screw fixed mounting plate 7 in the mirror box 1, the second development board 8 is fixed on the mounting plate 7 by using insulating pad screw, and the power I / O interface of the second development board 8 is connected with external 5V power supply through cable. The second development board 8 is provided with number output module one, number output module two, number output module three and number output module four; the number output module one is used for receiving the input pressure signals of each pressure sensing part one 20 and numbering each pressure signal, and the signal lines of all pressure sensing parts one 20 are connected with the signal input interface of the number input module one through a serial connection group; the signal lines of all pressure sensing parts two 27 are connected with the signal input interface of the number input module two through a serial connection group, and the number output module two is used for receiving the input pressure signals of each pressure sensing part two 27 and numbering each pressure signal; the signal lines of all pressure sensing parts three 37 are connected with the signal input interface of the number input module three through a serial connection group, and the number output module three is used for receiving the input pressure signals of each pressure sensing part three 37 and numbering each pressure signal; the signal lines of all pressure sensing parts four 40 are connected with the signal input interface of the number input module four through a serial connection group, and the number output module four is used for receiving the input pressure signals of each pressure sensing part four 40 and numbering each pressure signal; The number output module one, the number output module two, the number output module three and the number output module four are connected with the cloth force group analysis module, the cloth force group analysis module is used for converting each cloth point pressure signal into pressure data and analyzing the pressure data; the cloth force group analysis module is connected with the control processing module, the control processing module is connected with the encoding information receiving processing module, the steering rotation number control output module one and the steering rotation number control output module two, and the control processing module is used for processing the pressure data analysis result into control information, and issuing the control instruction of the running of the motor one 23 to the steering rotation number control output module one and issuing the control instruction of the running of the motor two 33 to the steering rotation number control output module two. In addition, the control processing module is also used for storing comfort control information, and the comfort control information includes the data information that the user feels more comfortable after wearing, and the data information includes the pressure threshold group obtained by each pressure sensing part and the angle threshold obtained from the angle encoder 30.
[0043] The power controlled ends of the motor one 23 and the motor two 33 are connected with the power supply control output ends of the driver through cables, and the signal input ends of the driver are connected with the signal output pins of the steering rotation number control output module one and the steering rotation number control output module two through signal lines.
[0044] The signal connection pins of the control processing module are connected with the external computer through transmission lines, and the control protocol and the data communication protocol are reached with the external computer, the running instruction or the stop running instruction is issued to the control processing module through the external computer, and the processing state in the control processing module can also be checked through the external computer. The encoding information receiving processing module is used for receiving the angle pulse signal of the angle encoder 30 in real time, and converting the angle pulse signal into angle data. The control processing module adjusts the control quantity in the steering rotation control module two according to the angle data.
[0045] In the first use, the user holds the support shell 12, and presses the contact soft cover 16 on the eye socket area and adjusts the eyeball to align the VR lens group 11. Another person operates the computer to issue a control motor one 23 running instruction from the control processing module to the steering rotation control module. When the rear pressure soft cover 25 on the movable strip 22 is pressed on the back of the head so that the head-mounted display device can be initially fixed on the head and the user feels relatively comfortable, another person operates the computer to issue a control motor one 23 stop running instruction from the control processing module to the steering rotation control module. At this time, the control processing module records the steering rotation control module of the motor one 23 running at this time and the pressure data input by the pressure sensing element one 20 and the pressure sensing element two 27; Then, the user rotates the support sleeve two 31, and another person operates the computer to issue a control motor two 33 running instruction from the control processing module to the steering rotation control module two, drives the soft rack 35 to tighten the top of the head and the chin, so that the top pressure frame 36 is pressed on the top of the head, and the bottom pressure soft cover 39 is pressed on the chin. When the user feels relatively comfortable, another person operates the computer to issue a control motor two 33 stop running instruction from the control processing module to the steering rotation control module two. At this time, the control processing module records the steering rotation control module of the motor two 33 running at this time, the rotation angle information, and the pressure data input by the pressure sensing element three 37 and the pressure sensing element four 40. After ten times of wearing and using, the control processing module generates habit type tightening control instruction information according to the angle threshold and the pressure threshold.
[0046] When the habit type tightening control instruction is issued to the control processing module through the external computer in subsequent use, the control processing module issues the control motor one 23 operation instruction to the steering rotation numerical control module, compares the pressure data with the number obtained from the pressure sensor one 20 and the pressure sensor two 27 with the pressure threshold value in the habit type control instruction information, and until the obtained pressure data is in the pressure threshold value range, the control processing module issues the control motor one 23 stop operation instruction to the steering rotation numerical control module; when the rotating support sleeve two 31 rotates, the angle value obtained from the angle encoder 30 is compared with the angle threshold value in the habit type control instruction information, and until the obtained angle value is in the angle threshold value range, the control processing module issues the control motor two 33 operation instruction to the steering rotation numerical control module two, so that the upper and lower soft rack 35 are tightened to the head and chin respectively, and the pressure data with the number obtained from the pressure sensor three 37 and the pressure sensor four 40 is compared with the pressure threshold value in the habit type control instruction information, and until the obtained pressure data is in the pressure threshold value range, the control processing module issues the control motor two 33 stop operation instruction to the steering rotation numerical control module two;
[0047] When the return instruction is issued to the control processing module through the external computer, the control processing module issues the return instruction to the steering rotation numerical control module one and the steering rotation numerical control module two, and until the motor one 23 and the motor two 33 rotate to reset and stop.
[0048] The working principle of the embodiment is as follows: The set interface module and the space layout module: the external space coordinates and the virtual model scene activity space are first matched, and after the real-time obtained ultrasonic array point signal and the acceleration signal with the direction intervention enter, the virtual model scene view can be quickly matched, and the virtual model scene view can be moved with the movement of the line of sight, therefore, the hardware instantaneous load processing amount is greatly reduced, and the frame breaking situation is not easy to appear, the synchronization accuracy is high, the delay caused by the action conversion processing and the display system rendering handover processing is reduced, and the picture lag problem is more effectively improved.
[0049] Self-adaptive adjustment type mounting hoop frame: by collecting the comfortable hoop pressure threshold value information of the user wearing in advance, when wearing, the mounting hoop frame can be self-adapted to adjust the hoop degree of the head according to the comfortable state, and the head-mounted display device can be effectively fixed on the head for use, and the manual adjustment amount is reduced, which is more convenient.
[0050] The above only describes the preferred embodiments of the present application, and is not used to limit the protection scope of the present application.
Claims
1. A virtual reality head-mounted display device, comprising a mirror box (1), an OLED display (9) arranged on one side in the mirror box (1), a VR lens group (11) arranged on one side of the mirror box (1), a side support cover (10) arranged between the VR lens group (11) and the OLED display (9), a support shell (12) arranged in communication with one side of the mirror box (1), an inner pressure ring (13) arranged on one side in the support shell (12) and pressed against the edge of the VR lens group (11), an outer pressure cover (14) arranged in the support shell (12) and pressed against one side of the inner pressure ring (13), a blue light protection lens group (15) arranged on the outer pressure cover (14), a contact soft cover (16) arranged on the other side of the support shell (12), and a mounting hoop frame mounted on the support shell (12) and mounting the head-mounted display device on the head, characterized in that: The mirror box (1) is provided with an ultrasonic array board (2) on one side, a three-axis acceleration sensor (38) is arranged on the mounting hoop, a development board (4) is arranged on one side in the mirror box (1), and an ultrasonic array processing development board (6) is arranged on the bottom of the mirror box (1); the ultrasonic array processing development board (6) is used for converting the ultrasonic feed point signal obtained by the ultrasonic array board (2) into an array point signal in real time; The development board (4) comprises a collection module and a space planning module, the collection module is used for corresponding planning of the array point signal obtained by the ultrasonic array processing development board (6), and real-time reception of the acceleration signal with azimuth intervention from the three-axis acceleration sensor (38); and the space planning module is used for corresponding planning of the real space model and the virtual model in each coordinate point, and control of the virtual model to change in distance and direction according to the acceleration signal feedback information.
2. The virtual reality head-mounted display device of claim 1, wherein: The mirror box (1) is provided with an ultrasonic array board (2) on one side, a three-axis acceleration sensor (38) is arranged on the mounting hoop, a development board (4) is arranged on one side in the mirror box (1), and an ultrasonic array processing development board (6) is arranged on the bottom of the mirror box (1); the ultrasonic array processing development board (6) is used for converting the ultrasonic feed point signal obtained by the ultrasonic array board (2) into an array point signal in real time; 3. The virtual reality head-mounted display device of claim 1, wherein: The collection module comprises an ultrasonic array point signal receiving module, an acceleration signal receiving module and an external space element set planning module, the ultrasonic array point signal receiving module is used for receiving the array point signal from the ultrasonic array processing development board (6), the acceleration signal receiving module is used for real-time reception of the acceleration signal with azimuth intervention from the three-axis acceleration sensor (38), and the ultrasonic array point signal receiving module and the acceleration signal receiving module are in transmission connection with the external space element set planning module, and the external space element set planning module is used for overall dimension planning of space; The external space element set planning module is also used for overall region labeling of the acceleration signal with azimuth intervention in the overall dimension planning space.
4. The virtual reality head-mounted display device of claim 3, wherein: The space planning module comprises a real-time storage module, a space marker establishment module, a marking processing module, a domain point change analysis module, a guide bar processing module and a screen control point processing module, the real-time storage module is used for storing the virtual space model input by an external device, the real-time storage module is in transmission connection with the space marker establishment module, and the space marker establishment module is used for establishing the internal and external region markers of the virtual space model; The space marker establishment module is in transmission connection with the marking processing module, the marking processing module is in transmission connection with the external space element set planning module, the marking processing module performs point-by-point marking on the virtual space model and the overall dimension planning space of the external space element set planning module, and the overall dimension planning space is corrected by the acceleration signal with azimuth intervention to obtain a global marking model; The marking processing module is in transmission connection with the domain point change analysis module, the marking processing module carries the global marking model by the domain point change analysis module, and when the marking processing module outputs the real-time array point signal, the direction indication and the acceleration change indication of the acceleration signal with azimuth intervention are matched to obtain a virtual space visual track. The domain point variation analysis module is connected with a guide bar processing module, the guide bar processing module is connected with a screen dial control point processing module, and the screen dial control point processing module directly controlled by the guide bar processing module dials the display interface according to a visual track.
5. The virtual reality head-mounted display device of any one of claims 1-4, wherein: The contact soft cover (16) is clamped in the mounting groove arranged on one side of the support shell (12), the contact soft cover (16) is provided with a buckle (17), the mounting groove is provided with a buckle groove, and the buckle (17) is clamped in the buckle groove; the contact soft cover (16) is provided with a soft filling ring (18); the contact soft cover (16) is provided with a support piece (19) near the soft filling ring (18); and the support piece (19) is uniformly provided with a pressure sensing element (20).
6. The virtual reality head-mounted display device of claim 5, wherein: The mounting hoop comprises support band sleeves (21) arranged on the front and rear sides of the support shell (12), the support band sleeves (21) are slidably provided with movable strips (22), the support band sleeves (21) are provided with a motor (23), a rotor shaft of the motor (23) is provided with a gear (24), the support band sleeves (21) are provided with grooves, the gear (24) is inserted into the grooves and meshes with a rack provided on the movable strips (22), one side of the movable strips (22) is provided with a rear soft sleeve (25), the inner side of the rear soft sleeve (25) is uniformly provided with a pressure convex strip (26), and the pressure convex strip (26) is provided with a pressure sensing element (27). The movable strips (22) are provided with middle sections (29), the middle sections (29) are provided with middle section grooves, the middle section grooves are provided with angle encoders (30), a moving shaft of the angle encoders (30) penetrates through the middle sections (29) and is connected with support band sleeves (31), the support band sleeves (31) are provided with mounting edge pieces (32) on the two sides, the mounting edge pieces (32) on the two sides are provided with motors (33) in an up-and-down staggered mode, rotor shafts of the motors (33) are connected with gears (34), the support band sleeves (31) are provided with through grooves, the support band sleeves (31) are slidably penetrated by soft racks (35), and the gears (34) penetrate through the through grooves and mesh with the soft racks (35). The soft racks (35) are provided with top pressing frames (36) at the top, the top pressing frames (36) are uniformly provided with pressure sensing elements (37), a three-axis acceleration sensor (38) is arranged on the top pressing frames (36), and the soft racks (35) are provided with bottom pressing soft sleeves (39) at the bottom, the bottom pressing soft sleeves (39) are uniformly provided with pressure sensing elements (40).
7. The virtual reality head-mounted display device of claim 6, wherein: The mirror box (1) is provided with a mounting plate (7), the mounting plate (7) is provided with a development board two (8), the development board two (8) is provided with a number output module one, a number output module two, a number output module three and a number output module four, the number output module one is used for receiving the input pressure signal of each pressure sensing part one (20) and numbering each pressure signal, the number output module two is used for receiving the input pressure signal of each pressure sensing part two (27) and numbering each pressure signal, the number output module three is used for receiving the input pressure signal of each pressure sensing part three (37) and numbering each pressure signal, and the number output module four is used for receiving the input pressure signal of each pressure sensing part four (40) and numbering each pressure signal; The number output module one, the number output module two, the number output module three and the number output module four are transmissionally connected with a cloth line force group analysis module, the cloth line force group analysis module is used for converting each cloth point pressure signal into pressure data and analyzing the pressure data, the cloth line force group analysis module is transmissionally connected with a control processing module, the control processing module is transmissionally connected with an encoding information receiving processing module, a steering rotation numerical control output module one and a steering rotation numerical control output module two, the control processing module is used for processing the pressure data analysis result into control information, and issuing an instruction of operating a control motor one (23) to the steering rotation numerical control output module one and issuing an instruction of operating a control motor two (33) to the steering rotation numerical control output module two; The encoding information receiving processing module is used for receiving an angle pulse signal of an angle encoder (30) in real time and converting the angle pulse signal into angle data, and the control processing module adjusts the control amount in the steering rotation numerical control output module two according to the angle data.