Virtual reality wireless cluster stepping simulation device and method thereof

Abstract

The invention discloses a virtual reality wireless cluster stepping simulation device and method, and relates to the field of virtual reality man-machine interaction equipment, the device comprises a base, the bottom of the base is provided with universal wheels, and the interior of the base is provided with a main control circuit board; a stepping signal acquisition sensor is mounted at the bottom of the pedal; the air pressure lifting chair column rod is connected with the pedal and the seat mounting tray plate; the seat is mounted on the seat mounting tray plate through a universal joint and a reset spring and can incline in multiple directions; a left-right identification sensor and an infrared distance measuring sensor are mounted at the bottom of the chair seat. According to the method, the stepping frequency is detected through the stepping signal acquisition sensor so as to control the moving speed, the inclination direction is detected through the sensor on the chair seat so as to control the moving direction, and a signal is processed into a key value instruction through the main control circuit board and then wirelessly sent to the VR terminal. According to the invention, natural interaction of stepping speed control and tilting direction control is realized, additional wearable equipment is not needed, the dizziness is effectively reduced, and flexible deployment of multiple equipment in a limited space is supported.

Description

Technical Field

[0001] This invention relates to the field of virtual reality human-computer interaction devices, specifically a virtual reality wireless cluster step-step simulation device and method. Background Technology

[0002] Virtual reality technology provides users with an immersive three-dimensional environment experience, in which the user's autonomous movement in virtual space is one of the key interactions that constitutes the sense of immersion. Achieving this movement requires effectively and naturally mapping the user's physical movements in the real world into displacement commands in the virtual environment.

[0003] In existing technologies, there are solutions that use dedicated peripherals to capture user movements to achieve virtual movement. For example, Chinese patent application CN107773910A discloses a wireless cluster virtual entertainment omnidirectional treadmill. This device includes a running / walking platform with an array of omnidirectional ball bearings, a waist ring connected to the platform via an optical axis and diagonal support rods, and various sensors (such as light, distance, and sound sensors) placed inside and outside the waist ring. The user stands on the running / walking platform, fixed by the waist ring. Their walking or running movements are detected by sensors on the platform's edge and the waist ring, processed by circuitry, and wirelessly transmitted to the host computer to control the movement of the virtual character.

[0004] The aforementioned omnidirectional treadmill equipment is bulky and occupies a large area, making it difficult to deploy and store flexibly in ordinary indoor environments. Existing devices require users to wear and secure lumbar restraint devices, which not only increases operational steps but also undermines ease of use and freedom of movement. Its interaction logic essentially still relies on users stepping on a specific plane and indirectly inferring movement intentions through the spatial displacement of the lumbar device. This differs from the instinctive mode of human beings in real walking, where they intuitively control direction and speed through the natural shift of their center of gravity between their feet and body tilt. This results in a lack of synchronization between the virtual movement response and the user's proprioception, potentially exacerbating the sense of incoordination and the risk of dizziness during use. The size of this structure also limits the potential for dense, flexible clustering of multiple devices within a limited space. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a virtual reality wireless cluster stepping simulation device and method to solve the technical problems of existing VR mobile peripherals, such as bulky equipment, the need to wear special accessories, unnatural movement control methods that are not coordinated with body movements and easily cause dizziness, and difficulty in achieving flexible deployment and collaborative work of multiple devices in a limited space.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a virtual reality wireless cluster step-step simulation device, comprising: a base, the bottom of which is provided with a base frame and casters, and an internal hollow cavity, wherein a main control circuit board is installed in the hollow cavity; a pedal, which is installed above the base, and a step signal acquisition sensor is installed at the bottom of the pedal; a pneumatic lifting chair column, the lower end of which passes through the pedal, the step signal acquisition sensor and the base, the bottom of which is fixedly connected to the base frame, and the upper end of which is connected to a seat mounting tray plate, wherein a lifting handle and a lifting handle are provided on the pneumatic lifting chair column. A cylindrical power supply box; a chair seat, which is mounted on the seat mounting tray plate via a universal joint and a return spring, wherein the upper part of the universal joint is connected to an upper universal joint connector, and the lower part is connected to a lower universal joint connector mounted on the seat mounting tray plate; a chair seat signal box and a chair seat power box, which are mounted on the bottom of the chair seat, and a left and right recognition sensor is also mounted under the chair seat, and an infrared ranging sensor is mounted on the bottom of the chair seat signal box; the step signal acquisition sensor, the left and right recognition sensor, and the infrared ranging sensor are all connected to the main control circuit board.

[0007] By adopting the above technical solution, step detection, seat tilt posture sensing, and motion control are integrated into a compact device. Users do not need to wear any additional equipment; simply by standing naturally on the pedals and straddling the seat, they can control the speed and direction of virtual movement using their own stepping motion and body tilt, achieving intuitive and natural interaction. This effectively alleviates dizziness caused by the mismatch between visual-motor and vestibular sensations. The omnidirectional wheels at the bottom of the device facilitate movement and storage, adapting to the needs of use in limited spaces.

[0008] The invention is further configured such that a step signal processor circuit board is installed inside the hollow cavity; the step signal acquisition sensor is a capacitive sensor, and its sensing signal is converted into a pulse frequency signal by the step signal processor circuit board and then transmitted to the main control circuit board.

[0009] By adopting the above technical solution, capacitive sensors are used to detect stepping motions non-contactly, resulting in high sensitivity and maintenance-free operation. A dedicated step signal processor circuit board performs localized preprocessing on the raw sensing signal, standardizing it into a pulse frequency signal. This not only reduces the processing burden on the main control circuit board and ensures real-time signal response, but also lays a reliable signal foundation for subsequent accurate analysis of stepping speed.

[0010] The present invention is further configured such that the step signal processor circuit board includes: a signal filtering module for filtering multiple asynchronous step signals sensed by the step signal acquisition sensor; a signal gating module connected to the signal filtering module for merging and gating the filtered multiple signals into a single signal; and a frequency conversion module connected to the signal gating module for converting the single signal into the pulse frequency signal.

[0011] By adopting the above technical solution and modular circuit design, the potentially multiple and asynchronous step sensing signals are professionally processed. First, interference is suppressed by a filtering module, then integrated into a stable single signal by a gating module, and finally represented by a frequency conversion module as a pulse frequency corresponding to the stepping rhythm. This dedicated processing chain greatly improves the signal-to-noise ratio and stability of the stepping signal, ensuring the accuracy and reliability of the conversion from body movement to electrical signals, which is key to achieving precise speed matching.

[0012] The present invention is further configured such that the left and right recognition sensor includes a human body capacitance sensing chip, which is used to detect a single-leg approach signal when the chair seat is tilted to one side and output a corresponding direction signal to the chair seat signal box.

[0013] By employing the above technical solution, the left and right tilt status of the chair seat is detected using the principle of human body capacitive sensing. When the user's body leans to one side, the distance between the corresponding leg and the sensor changes, which is sensitively detected and translated into a clear left or right directional command. This method eliminates the need for mechanical switches or complex optical components, provides an intuitive and rapid response, and realizes the intention of controlling virtual steering through natural body tilt.

[0014] The present invention is further configured such that the infrared ranging sensor is oriented toward the fitting explosion-proof plate mounted on the seat mounting tray, and is used to output a signal representing the front-to-back tilt of the seat to the seat signal box based on the change in the intensity of reflected infrared light.

[0015] By employing the above technical solution, the infrared ranging sensor non-contactly measures the distance change between the chair seat and the explosion-proof plate below, thereby accurately sensing the forward and backward tilt angle of the chair seat. Tilting the chair forward increases the distance, triggering a forward signal; tilting it backward decreases the distance, triggering a backward signal. This solution transforms the continuous physical quantity of tilt angle into precise control commands, achieving natural and linear forward and backward control.

[0016] The present invention is further configured such that the chair signal box is provided with a first wireless signal transmitting module, which is used to send the signals of the left and right identification sensor and the infrared ranging sensor to the main control circuit board.

[0017] By adopting the above technical solution, the direction detection signal is transmitted wirelessly, avoiding the need for easily worn physical connections between the movable seat and the fixed base, thus improving the reliability and service life of the system, while allowing the seat to move more freely and without restriction.

[0018] The present invention is further configured such that the step signal processor circuit board is connected to a second wireless signal transmitting module, which is used to send the pulse frequency signal to the main control circuit board.

[0019] By adopting the above technical solution, the processed step speed signal is also transmitted wirelessly, which allows the pedal and signal processing part to be physically separated from the main control circuit board, increasing the flexibility of the device structure design and further simplifying the internal wiring.

[0020] The present invention is further configured such that the main control circuit board includes a wireless receiving module, a signal gating circuit, a key value module, and a wireless transmitting module; the wireless receiving module is used to receive direction signals and step frequency signals, the signal gating circuit is used to control the key value module to output direction key values ​​according to the direction signals, and the wireless transmitting module is used to send key value data to an external VR terminal.

[0021] By adopting the above technical solution, the main control circuit board acts as the core hub, aggregating and processing all sensor information. It maps received directional commands to standard directional key values ​​(such as keyboard key signals) and transmits them to the VR host or all-in-one device via a wireless transmission module. This key value mapping method has extremely high compatibility, requiring no custom drivers for specific games, and is plug-and-play, greatly improving the device's versatility and ease of use.

[0022] The present invention is further configured such that the main control circuit board also includes a D / A conversion module and a comparator circuit, used to convert the received step pulse frequency signal into a voltage signal and, after comparison, control the speed selection switch to adjust the speed key value output by the key value module.

[0023] By adopting the above technical solution, linear and real-time control of stepping speed on virtual movement speed is achieved. By converting pulse frequency into analog voltage and comparing it with a preset threshold, different stepping rhythms (walking, jogging, running) can be accurately distinguished, and speed key signals of different intensities or frequencies can be output accordingly. This allows the movement speed in the VR screen to be synchronized with the user's actual stepping speed in real time, greatly improving immersion and coordination.

[0024] This invention also discloses a method for using the aforementioned virtual reality wireless cluster step simulation device, comprising the following steps: detecting user steps using the step signal acquisition sensor to generate step signals; detecting the tilt direction of the chair using the left and right recognition sensor and the infrared ranging sensor to generate direction signals; transmitting the step signals and direction signals to the main control circuit board; the main control circuit board generating direction control commands based on the direction signals and generating speed control commands based on the speed information obtained from processing the step signals; and wirelessly sending the direction control commands and speed control commands to the VR terminal to control the movement of the VR screen.

[0025] By adopting the above technical solution, a complete and natural interaction method is provided, which controls speed by stepping and direction by leaning. This method directly and decouples the user's biomechanical movements into motion parameters in the virtual environment: stepping frequency determines movement speed, and body tilt determines movement direction. This control logic, which conforms to human instinct and intuition, reduces learning costs and cognitive load from the source of interaction and effectively promotes the matching of visual motion perception and proprioception, representing a fundamental approach to solving the problem of VR motion sickness. Simultaneously, the end-to-end wireless signal transmission supports clustered deployment of multiple devices and simultaneous independent operation.

[0026] In summary, the present invention has the following main beneficial effects: This invention integrates a step signal acquisition sensor, a posture sensing chair, and a main control circuit board into a compact structure with casters, allowing users to use it directly without additional clothing. It employs a natural interaction logic of step speed control and tilt direction control, converting stepping movements into pulse frequencies via a dedicated signal processing circuit to achieve speed synchronization. Simultaneously, it uses capacitive and infrared sensors to accurately detect chair tilt and control direction, fundamentally promoting the matching of visual-motor and vestibular sensations, significantly reducing the risk of dizziness. Furthermore, the main control circuit communicates with the VR terminal via wireless key mapping, offering both high compatibility (plug-and-play) and flexibility in supporting multi-device cluster deployment. This comprehensively solves the technical problems of existing devices being bulky, requiring additional clothing, having unnatural interactions that easily cause dizziness, and being difficult to coordinate multiple devices in limited spaces. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is an exploded view of the structure of the present invention; Figure 3 This is a schematic diagram of the bottom structure of the chair seat of the present invention; Figure 4 This is a schematic diagram of the chair column structure of the present invention; Figure 5 This is a schematic diagram of the universal joint and return spring of the present invention; Figure 6 This is a schematic diagram of the circuit flow of the left and right recognition sensor of the present invention; Figure 7 This is a schematic diagram of the circuit flow of the front and rear recognition sensors of the present invention; Figure 8 This is a schematic diagram of the signal connection of the wireless transmission module for the seat portion of the present invention; Figure 9 This is a flowchart of the step signal processing circuit of the present invention; Figure 10 This is a schematic diagram of the main control circuit board circuit principle topology of the present invention.

[0028] In the diagram: 1. Gas-lift chair column; 2. Gas-lift switch shaft; 3. Cylindrical power supply box; 4. Seat mounting tray; 5. Explosion-proof mounting plate; 6. Lifting handle; 7. Lower universal joint connector; 8. Upper universal joint connector; 9. Seat signal box; 10. Seat power supply box; 11. Universal joint; 12. Seat; 13. Infrared distance sensor; 14. Left / right recognition sensor; 15. Pedal; 16. Base; 17. Base frame; 18. Casters; 19. Cylindrical battery power supply cable; 20. Hollow cavity; 21. Step signal acquisition sensor; 22. Step signal processor circuit board; 23. Main control circuit board; 24. Return spring. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0030] The embodiments of the present invention will now be described.

[0031] Please see Figures 1 to 5 This invention provides a virtual reality wireless cluster stepping simulation device. The device adopts an integrated design, combining mechanical support, motion acquisition, and signal processing into a single unit. Its overall structure is compact, and it is easily moved via casters 18 at the bottom.

[0032] The core mechanical structure of the device includes: The base assembly includes a base 16, a base frame 17 fixed to its bottom, and multiple casters 18 mounted below the base frame 17. The base 16 has a hollow cavity 20 inside to accommodate the core circuitry.

[0033] Pedal assembly: A pedal 15 is fixed to the upper surface of the base 16 by fitting or bolting, serving as a standing platform for the user. A step signal acquisition sensor 21 for detecting stepping motions is concealed on the bottom surface of the pedal 15.

[0034] Lifting and support components: A pneumatic lifting chair post 1, the lower end of which passes through the pedal (15), step signal acquisition sensor (21) and base (16) in sequence, and is fixedly connected to the center of the base frame (17), and the upper end is connected to a seat mounting tray 4. By operating the lifting handle 6 set on the chair post, the internal pneumatic rod lifting switch shaft 2 can be driven to realize stepless adjustment of the height of the seat mounting tray 4 to accommodate users of different heights. A cylindrical power supply box 3 is also set on the chair post. The pneumatic lifting function component is the same component as the existing pneumatic lifting chair and is not within the protection scope of this solution. The pneumatic lifting chair post 1 is essentially the same as the chair post in the existing pneumatic lifting chair, but the problem it solves here is mainly to enable the device to have a rotation function so that the user can freely choose the orientation.

[0035] Posture-sensing seat assembly: A seat 12 for a user to straddle is movably connected to the seat mounting tray 4 via a universal joint mechanism. Specifically, a fitting explosion-proof plate 5 is installed on the seat mounting tray 4. The lower end of the universal joint 11 is fixed to the explosion-proof plate 5 via a lower universal joint connector 7, and its upper end is fixed to the bottom of the seat 12 via an upper universal joint connector 8. A return spring 24 is fitted outside the universal joint 11, allowing the seat 12 to tilt in any direction under force and automatically return to the neutral position after the external force is removed.

[0036] Sensor Integration Components: A seat signal box 9 and a seat power supply box 10 are installed at the bottom of the seat 12. A left and right identification sensor 14 is located at the center of the bottom of the seat 12. An infrared ranging sensor 13 is installed at the bottom of the seat signal box 9, and the explosion-proof plate 5 is fitted vertically downwards to fit the sensor. All sensors are connected to the seat signal box 9 or the step signal processor circuit board 22 via wired connection, while their control signals communicate wirelessly with the main control circuit board 23.

[0037] The circuit system of the device is based on the aforementioned mechanical structure. A step signal processor circuit board 22 and a main control circuit board 23 are installed within the hollow cavity 20 of the base. The cylindrical power supply box 3 supplies power to each circuit board via a cylindrical battery power supply cable 19.

[0038] Its core working principle is based on two parallel paths of the signal flow: Speed ​​signal path: The user's stepping motion on pedal 15 is detected by the step signal acquisition sensor 21 (capacitive sensing) at its bottom. The generated raw signal is processed in the step signal processor circuit board 22 via... Figure 9 The dedicated processing chain of "filter-gating-frequency conversion" shown is converted into a pulse frequency signal that strictly corresponds to the step frequency and transmitted wirelessly (TX-b).

[0039] Directional signal path: The user controls the tilt direction of the seat 12 by using their body weight. Left and right tilt is controlled by the left and right recognition sensor 14 (capacitive sensing type). Figure 6 The forward and backward tilt is detected by infrared ranging sensor 13 (analog comparison type). Figure 7 The generated directional commands are collected in the chair signal box 9 and transmitted wirelessly (TX-a).

[0040] Main control circuit board 23 (process as follows) Figure 10 (As shown) The system wirelessly receives the two types of signals mentioned above. The direction signal is directly mapped to a standard direction key value. The speed pulse signal undergoes D / A conversion, PI filtering, and threshold comparison to be converted into discrete speed gear control commands. Finally, the integrated control data is transmitted to the VR terminal via Bluetooth or 2.4G wireless to drive the virtual character's movement.

[0041] like Figure 6 As shown, the left-right direction recognition function in this invention is implemented by a left-right recognition sensor 14 installed in the middle of the lower part of the chair seat 12. This sensor uses the principle of human body capacitive sensing and is specifically composed of two capacitive sensing chips, an XOR gate logic circuit, and a gating switch circuit. The two capacitive sensing chips correspond to the user's left and right legs, respectively. When the user straddles the chair seat 12, the sensing chips can detect the proximity of the legs to the chair seat 12. Under normal operating conditions, when the chair seat 12 is not tilted left or right, the left-right recognition sensor 14 simultaneously detects the proximity signals of the left and right legs. At this time, no XOR signal is generated, and there is no direction output. When the user's body tilts to the left, causing the chair seat 12 to tilt to the left, the distance between the left capacitive sensing chip and the leg increases, and only the right capacitive sensing chip remains effective. At this time, the XOR gate logic circuit outputs a left tilt signal (Lout); similarly, when the chair seat 12 tilts to the right, only the left capacitive sensing chip is effective, outputting a right tilt signal (Rout). This direction signal, after passing through the gating switch circuit, is transmitted to the main control circuit board 23 by the TX-a wireless transmission module inside the chair seat signal box 9. This design allows users to control virtual left and right movement by naturally tilting their bodies, eliminating the need for an additional controller.

[0042] like Figure 7As shown, the forward and backward orientation recognition function is achieved by an infrared ranging sensor 13 installed at the bottom of the chair signal box 9. This sensor uses a CP2Y0A series infrared ranging module, which, together with a voltage comparator and other components, forms the forward and backward recognition circuit. The infrared ranging sensor 13 is installed vertically downward. The infrared light emitted by it shines on the explosion-proof plate 5 below and is reflected. The receiving end outputs a corresponding analog voltage signal according to the intensity of the reflected light. This signal is sent to the voltage comparator circuit for processing. When the chair 12 is in a horizontal position, the reflection distance is fixed, the output voltage value is within the preset tolerance range, and the comparator has no output, indicating a stop state. When the user leans forward and the chair 12 tilts forward, the distance between the infrared sensor and the reflective surface increases, the output voltage is lower than the lower threshold, and the comparator outputs a forward signal (Fout); when the user leans back and the chair 12 tilts backward, the distance decreases, the output voltage is higher than the upper threshold, and the comparator outputs a backward signal (Bout). Similarly, this forward and backward orientation signal is transmitted to the main control circuit board 23 through the TX-a wireless transmission module inside the chair signal box 9. This structure allows users to intuitively control virtual forward and backward movement by leaning their bodies forward or backward.

[0043] like Figure 8 As shown, the chair seat signal box 9 serves as the central hub for collecting and transmitting various identification signals from the chair seat 12, and integrates a wireless transmission module (TX-a). It receives left / right direction signals (Lout / Rout) from the left / right identification sensor 14 and front / back direction signals (Fout / Bout) from the infrared ranging sensor 13. All direction signals undergo preliminary processing inside the signal box before being modulated and transmitted by the same TX-a wireless transmission module. This wireless transmission method avoids cable entanglement issues caused by the relative rotation of the chair seat 12 and base 16, and enhances the freedom and safety of device use. The wireless signal employs a specific communication protocol and encoding method, ensuring that multiple devices can be used simultaneously at close range without interference through code recognition.

[0044] like Figure 9As shown, the detection and signal generation of stepping motion are jointly accomplished by the step signal acquisition sensor 21 installed at the bottom of the pedal 15 and the step signal processor circuit board 22 built into the cavity 20 of the base 16. The step signal acquisition sensor 21 adopts capacitive sensing technology and consists of a sensing matrix composed of multiple PDA sensing heads, covering the entire effective area of ​​the pedal 15. When the user steps on the pedal 15, the contact and separation of the foot with the pedal will cause asynchronous changes in the capacitance value of each point of the sensing matrix. These asynchronous signals are first acquired by the multi-channel capacitive sensing chip, and then enter the matrix filtering circuit and signal selection circuit composed of multiple inverting differentiating circuits and multiple AND gate logic chips. This circuit system combines the complex, asynchronous contact signals, filters out jitter interference, and selects the output as a stable single-frequency signal. This single-frequency signal is then converted into a pulse frequency signal proportional to the stepping frequency by the inverting differentiating circuit. Finally, this pulse frequency signal is sent to the main control circuit board 23 through the TX-b wireless transmission module (or optional wired interface). This design enables accurate capture of arbitrary step rhythm and position, and converts physical step speed into a quantifiable electrical signal.

[0045] like Figure 10 As shown, the main control circuit board 23 is the core processing unit of this invention, responsible for receiving and comprehensively processing all sensor signals and generating the final control commands. The RX wireless receiver module (or optional wired interface) on the main control circuit board 23 simultaneously receives the direction signal from TX-a and the step speed pulse signal from TX-b. The direction signal is sent to the RX-a direction signal gating circuit, which parses out left, right, forward, and backward direction commands and controls the key value module to output the corresponding standard keyboard, mouse, or game controller key value data. The step speed pulse signal is sent to the RX-b channel, where the D / A conversion module first converts the pulse frequency into a corresponding analog voltage value, which is proportional to the step frequency. This voltage signal is then filtered and shaped by a proportional-integral (PI) circuit to eliminate signal abrupt changes and maintain the smoothness of speed changes. The processed voltage signal is then sent to a comparator circuit and compared with a preset threshold, thereby discretizing the continuous speed quantity into several speed levels. The speed level signal is further processed by an XOR gate logic circuit and a speed selection switch circuit, ultimately controlling the key value module to output key value data corresponding to the speed level. Finally, the key value data integrating all direction and speed information is sent to the computer host or VR all-in-one device via Bluetooth or 2.4G wireless (or via wired interface), thereby precisely controlling the movement direction and speed of the character in the virtual scene and achieving real-time adaptation between the stepping rhythm and the virtual movement speed.

[0046] Based on the same inventive concept, the present invention also provides a control method using the above-described device, the method comprising the following steps: Step S1: Posture Preparation and Signal Initialization. The user adjusts the seat 12 to a suitable height according to their height, sits on the seat 12 in a straddle posture, and stands with both feet on the footrest 15. The system is powered on, and all sensors and circuit modules complete initialization.

[0047] Step S2: Parallel acquisition of motion signals. The user steps in place, and the step signal acquisition sensor 21 detects the foot movements in real time, generating raw sensing signals. The user expresses the intention to move by leaning forward, backward, or tilting left or right. The left and right recognition sensor 14 and the infrared ranging sensor 13 detect the tilt angle and direction of the seat 12 in real time, generating directional status signals.

[0048] Step S3: Local signal preprocessing and wireless transmission. The raw step signal is transmitted to the step signal processor circuit board 22, according to... Figure 9 The process shown involves filtering, gating, and frequency conversion to obtain a pulse signal that accurately represents the step frequency, which is then wirelessly transmitted by the TX-b module. The directional status signal generated by the seat tilt is transmitted to the seat signal box 9 for encoding and is then wirelessly transmitted by the TX-a module.

[0049] Step S4: Central signal processing and instruction synthesis. The main control circuit board 23 receives the wireless signal and processes it in parallel (e.g., ...). Figure 10 The system decodes the direction signal and controls the key value module to output the corresponding standard direction key value (such as W / A / S / D). It performs D / A conversion and PI filtering on the speed pulse signal to obtain a smooth speed voltage; this voltage is compared with a preset threshold to determine the speed gear, and the key value module is controlled to superimpose the corresponding speed control command.

[0050] Step S5: Wireless control execution. The main control circuit board 23 sends the synthesized standard peripheral command stream containing direction and speed information to the connected computer or VR all-in-one device via wireless communication, controlling the viewpoint or character in the VR application to move in a way that is synchronized with the user's stepping speed and consistent with the body's tilt direction, thereby completing a natural interactive closed loop of stepping speed control and tilting direction control.

[0051] Step S6: VR Terminal Command Parsing and Motion Implementation. After receiving the key value command stream sent by the main control circuit board (23), the VR terminal (computer or VR all-in-one machine) parses the direction key value and speed key value by the VR application and maps them into the motion parameters of the virtual character. In each frame update, the character's position and viewing direction are calculated in real time according to the parameters, and the VR screen is driven to respond synchronously to the user's stepping speed and body tilting direction to complete the natural motion closed loop of "stepping speed control and body tilting direction control".

[0052] The above step S6 is a well-known technology for implementing character motion control based on peripheral input in VR applications, which can be achieved through the input system and character controller component in general game engines (such as Unity and Unreal Engine).

[0053] In summary, this invention constructs a compact physical device by integrating a base with casters, a height-adjustable chair column, a universal joint chair seat with a return spring, and a group of capacitive and infrared sensors integrated into the pedals and the bottom of the chair seat. Based on the step signal processing circuit for filtering, gating, and frequency conversion of the original signal, and the main control circuit for wireless reception, key mapping, and synthetic transmission of direction and speed signals, a complete natural interactive system for step speed control and lean direction control is formed. This device and method work together to allow users to control VR movement through intuitive body movements without additional wear, effectively solving the technical problems of traditional devices being bulky, requiring additional binding, having uncoordinated interactions that easily cause dizziness, and being difficult to deploy in multi-device clusters.

[0054] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A virtual reality wireless cluster step-step simulation device, characterized in that, include: The base (16) has a base frame (17) and casters (18) at its bottom and a hollow cavity (20) inside, in which a main control circuit board (23) is installed. A pedal (15) is mounted on the base (16), and a step signal acquisition sensor (21) is mounted on the bottom of the pedal (15). The pneumatic lifting chair column (1) has the pedal (15) and step signal acquisition sensor (21) passing through it in sequence, as well as the base (16), and is fixedly connected to the base frame (17). The upper end is connected to the seat mounting tray plate (4). The pneumatic lifting chair column (1) is equipped with a lifting handle (6) and a cylindrical power supply box (3). The seat (12) is mounted on the seat mounting tray plate (4) via a universal joint (11) and a return spring (24). The upper part of the universal joint (11) is connected to the upper universal joint connecting seat (8), and the lower part is connected to the lower universal joint connecting seat (7) mounted on the seat mounting tray plate (4). The seat signal box (9) and the seat power box (10) are installed at the bottom of the seat (12). A left and right recognition sensor (14) is also installed below the seat (12). An infrared ranging sensor (13) is installed at the bottom of the seat signal box (9). The step signal acquisition sensor (21), left and right recognition sensor (14), and infrared ranging sensor (13) are all connected to the main control circuit board (23) via signal connection.

2. The virtual reality wireless cluster step-step simulation device according to claim 1, characterized in that: The hollow cavity (20) is also equipped with a step signal processor circuit board (22); the step signal acquisition sensor (21) is a capacitive sensor, and its sensing signal is converted into a pulse frequency signal by the step signal processor circuit board (22) and then transmitted to the main control circuit board (23).

3. The virtual reality wireless cluster step-step simulation device according to claim 2, characterized in that: The step signal processor circuit board (22) includes: The signal filtering module is used to filter the multiple asynchronous step signals sensed by the step signal acquisition sensor (21); A signal gating module, connected to the signal filtering module, is used to merge and select multiple filtered signals into a single signal. A frequency conversion module, connected to the signal gating module, is used to convert the single-channel signal into the pulse frequency signal.

4. The virtual reality wireless cluster step-step simulation device according to claim 1, characterized in that: The left and right recognition sensor (14) includes a human body capacitance sensing chip, which is used to detect a single-leg approach signal when the chair seat (12) is tilted to one side and output a corresponding direction signal to the chair seat signal box (9).

5. A virtual reality wireless cluster step-step simulation device according to claim 1, characterized in that: The infrared ranging sensor (13) is positioned facing the fitting explosion-proof plate (5) mounted on the seat mounting tray plate (4) and is used to output a signal representing the forward and backward tilt of the seat (12) to the seat signal box (9) based on the change in the intensity of reflected infrared light.

6. The virtual reality wireless cluster step-step simulation device according to claim 1, characterized in that: The chair signal box (9) is equipped with a first wireless signal transmission module, which is used to send the signals of the left and right identification sensor (14) and the infrared ranging sensor (13) to the main control circuit board (23).

7. A virtual reality wireless cluster step-step simulation device according to claim 3, characterized in that: The step signal processor circuit board (22) is connected to a second wireless signal transmitting module, which is used to send the pulse frequency signal to the main control circuit board (23).

8. A virtual reality wireless cluster step-step simulation device according to claim 7, characterized in that: The main control circuit board (23) includes a wireless receiving module, a signal gating circuit, a key value module, and a wireless transmitting module; the wireless receiving module is used to receive direction signals and step frequency signals, the signal gating circuit is used to control the key value module to output direction key values ​​according to the direction signals, and the wireless transmitting module is used to send key value data to an external VR terminal.

9. A virtual reality wireless cluster step-step simulation device according to claim 8, characterized in that: The main control circuit board (23) also includes a D / A conversion module and a comparator circuit, which are used to convert the received step pulse frequency signal into a voltage signal and, after comparison, control the speed selection switch to adjust the speed key value output by the key value module.

10. A method using the virtual reality wireless cluster stepping simulation device as described in any one of claims 1-9, characterized in that: Includes the following steps: The step signal acquisition sensor (21) detects the user's steps and generates step signals; The tilt direction of the chair seat (12) is detected by the left and right recognition sensor (14) and the infrared ranging sensor (13), and a direction signal is generated; The step signal and direction signal are transmitted to the main control circuit board (23). The main control circuit board (23) generates a direction control command based on the direction signal and generates a speed control command based on the speed information obtained from the step signal processing. The direction control commands and speed control commands are wirelessly transmitted to the VR terminal to control the movement of the VR screen.

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