Multifunctional feedback device, haptic feedback system, and AR / VR glasses

Abstract

The present invention provides a multi-function feedback device, a haptic feedback system and AR / VR glasses. [Solution] The multifunctional feedback device of the present invention mounts a vibration system and a tactile system in one housing and shares the same magnetic circuit system, thereby not only realizing the transmission of audio signals, but also realizing tactile feedback by vibration signals, achieving the effect of multifunctional feedback, and sharing one magnetic circuit system, thereby saving costs and occupying space. The tactile feedback system includes a multifunctional feedback device, and the vibration system and the tactile system may be independent power amplifiers or common power amplifiers. The AR / VR glasses mount the tactile feedback system on the lens frame, and when the user uses them, they can provide reminders by vibration or voice on the person's head, meeting various needs.

Description

Technical Field

[0001] The present invention belongs to the technical field of AR / VR, and particularly relates to a multifunctional feedback device.

Background Art

[0002] Virtual Reality (VR) technology enables a computer to simulate a virtual environment to give humans a sense of immersion in the environment, and Augmented Reality (AR) technology is a technology that skillfully combines virtual information and the real world. Both VR technology and AR technology, and related AR / VR products are widely applied in fields such as advanced weapons, aircraft manufacturing and development, visualization of data models, entertainment and art.

[0003] However, related AR / VR products all transmit audio signals through speakers to realize reminder or game functions, but in the actual use process, the audio reminder alone cannot meet the user's usage needs.

[0004] Therefore, there is a need to provide a multifunctional feedback device.

Summary of the Invention

Problems to be Solved by the Invention

[0005] An object of the present invention is to provide a multifunctional feedback device that can at least to some extent solve the deficiencies in the above related technologies.

Means for Solving the Problems

[0006] The technical solution of the present invention is as follows: A multifunctional feedback device comprising a frame, a magnetic circuit system fixed within the frame, and a vibration system connected to the frame and driven by the magnetic circuit system to produce sound along the thickness direction, the multifunctional feedback device further comprising a tactile system installed opposite the vibration system, the tactile system comprising a drive unit installed at a distance from the magnetic circuit system and driven by the magnetic circuit system to vibrate along the thickness direction, a first elastic member connected to the drive unit and fixed to the frame, and a tactile material connected to one side of the first elastic member away from the drive unit.

[0007] Furthermore, the magnetic circuit system includes a first magnetic yoke fixedly connected to the frame, magnetic steel fixed within the first magnetic yoke, and a pole plate fixed to the side of the magnetic steel adjacent to the vibration system, wherein the first magnetic yoke has a housing cavity, and the drive unit is housed within the housing cavity.

[0008] Furthermore, the drive unit includes an iron core fixedly mounted on the side of the first elastic member away from the tactile material, and a coil fitted outside the iron core, both of which are housed within the housing cavity.

[0009] Furthermore, the magnetic circuit system further includes a pole plate ring fixed to the magnetic steel and fitted outside the coil, with a gap between the pole plate ring and the coil.

[0010] Furthermore, the magnetic steel has a retractable groove that communicates with the housing cavity, and the pole plate ring is fitted into the retractable groove.

[0011] Furthermore, the drive unit further includes a second magnetic yoke that is fixed to the first elastic member and covers the outside of the iron core and the coil.

[0012] Furthermore, the first elastic member includes a sealing film, which is fixed to the side of the first magnetic yoke away from the vibration system, and the sealing film is attached to the iron core and the coil, respectively.

[0013] Furthermore, the tactile material includes an external pressure block, which is installed on the side of the sealing film that is away from the iron core and the coil.

[0014] Furthermore, the magnetic circuit system further includes a connecting member, which is fixed between the pole plate and the first magnetic yoke.

[0015] Furthermore, a magnetic gap is formed between the first magnetic yoke and the magnetic steel, and the vibration system includes a diaphragm connected to the frame, a dome connected to the diaphragm, and a voice coil connected to the dome and inserted into the magnetic gap.

[0016] Furthermore, the multifunctional feedback device further includes two first flexible circuit boards symmetrically positioned at both ends of the magnetic circuit system, the first flexible circuit boards having one end fixed to the frame and the other end fixedly connected to the side of the voice coil away from the dome.

[0017] Furthermore, the multi-functional feedback device further includes a second elastic member installed between the magnetic circuit system and the drive unit.

[0018] A haptic feedback system comprising a control processing assembly, a power amplification circuit electrically connected to the control processing assembly, and a multifunctional feedback device according to any one of the above items electrically connected to the power amplification circuit, wherein the control processing assembly is used to receive and process AR / VR signals and to output audio signals and haptic signals to the power amplification circuit, the power amplification circuit is used to perform power amplification processing on the audio signals and haptic signals, the vibration system is used to receive the power amplified audio signals, and the haptic system is used to receive the amplified haptic signals.

[0019] Furthermore, the control processing assembly includes an MCU controller, a first chip processor and a second chip processor to which signals are connected to the MCU controller, the power amplification circuit includes an audio power amplification circuit electrically connected to the first chip processor and the vibration system, and a motor power amplification circuit electrically connected to the second chip processor and the tactile system, the MCU controller is used to receive and process AR / VR signals to obtain a first signal and a second signal, the first chip processor is used to receive and process the first signal to obtain the audio signal, the second chip processor is used to receive and process the first signal to obtain the tactile signal, the audio power amplification circuit is used to perform power amplification on the audio signal, and the motor power amplification circuit is used to perform power amplification on the tactile signal.

[0020] Furthermore, the vibration system and the tactile system are connected in series, the tactile feedback system further includes a capacitor connected in parallel with the tactile system, the control processing assembly includes an MCU controller and a signal processing assembly to which signals are connected to the MCU controller, the power amplification circuit includes an audio power amplification circuit electrically connected to the signal processing assembly and the vibration system, the vibration system is electrically connected to the audio power amplification circuit, the MCU controller is used to receive and process AR / VR signals to obtain a first signal and a second signal, the signal processing assembly is used to receive and process the first signal and the second signal to obtain a mixed wave signal, the mixed wave signal includes an audio signal corresponding to the first signal and a tactile signal corresponding to the second audio, the audio power amplification circuit is used to perform power amplification on the mixed wave signal, and the amplified mixed wave signal is sequentially transmitted to the vibration system and the tactile system.

[0021] Furthermore, processing the AR / VR signal and outputting the audio signal and haptic signal to the power amplification circuit includes calling a haptic feedback signal effect library based on the AR / VR signal to obtain the haptic signal, wherein the haptic signal is less than 80 Hz.

[0022] AR / VR glasses, comprising a lens frame and a haptic feedback system as described in any one of the above paragraphs, installed in the lens frame. [Effects of the Invention]

[0023] The beneficial effects of the present invention are as follows. The present invention provides a multi-functional feedback device, a tactile feedback system, and AR / VR glasses. The multi-functional feedback device of the present invention realizes the transmission of audio signals by mounting a vibration system and a tactile system in one housing and sharing the same magnetic circuit system, and can also realize tactile feedback by vibration signals, achieving the effect of multi-functional feedback. Also, because the same magnetic circuit system is shared, costs can be saved and the occupied space can be reduced. The tactile feedback system includes the multi-functional feedback device, where the vibration system and the tactile system may be independent power amplifications or common power amplifications. The AR / VR glasses mount the tactile feedback system on the lens frame, and when used by the user, a reminder can be implemented by vibration or sound on the human head, meeting various needs.

Brief Description of the Drawings

[0024] [Figure 1] It is a layout conceptual diagram of the functional modules of the multi-functional feedback device in an embodiment of the present invention. [Figure 2] It is a perspective schematic diagram showing the configuration of the multi-functional feedback device according to the first and second embodiments in an embodiment of the present invention. [Figure 3] It is a cross-sectional schematic diagram in the A-A direction of FIG. 2 of the multi-functional feedback device according to the first embodiment in an embodiment of the present invention. [Figure 4] It is a cross-sectional schematic diagram in the A-A direction of FIG. 2 of the multi-functional feedback device according to the second embodiment in an embodiment of the present invention. [Figure 5] It is a perspective schematic diagram showing the configuration of the multi-functional feedback device according to the third embodiment in an embodiment of the present invention. [Figure 6] It is a cross-sectional schematic diagram in the A-A direction of FIG. 5 of the multi-functional feedback device according to the third embodiment in an embodiment of the present invention. [Figure 7]This is a schematic perspective view showing the exploded configuration of a multifunctional feedback device according to the first embodiment of the present invention. [Figure 8] This is a schematic perspective view showing the exploded configuration of a multifunctional feedback device according to a second embodiment of the present invention. [Figure 9] This is a schematic perspective view showing the exploded configuration of a multifunctional feedback device according to a third embodiment of the present invention. [Figure 10] This is a bottom view of a multifunctional feedback device according to an embodiment of the present invention. [Figure 11] This is an enlarged view of detail A in Figure 7. [Figure 12] This is a schematic diagram showing the link configuration of a haptic feedback system according to one embodiment of the present invention. [Figure 13] This is a schematic diagram showing the link configuration of a haptic feedback system according to another embodiment of the present invention. [Figure 14] This is a schematic diagram showing a partial configuration of AR / VR glasses in an embodiment of the present invention. [Modes for carrying out the invention]

[0025] The present invention will be further described below with reference to the drawings and embodiments.

[0026] An embodiment of the present invention provides a multifunctional feedback device, as shown in Figures 1 to 8, which includes a frame 1, a magnetic circuit system 2 fixed within the frame 1, and a vibration system 3 connected to the frame 1 and driven by the magnetic circuit system 2 to produce sound along the thickness direction. The multifunctional feedback device further includes a tactile system 4 installed opposite the vibration system 3, which includes a drive unit 41 installed at a distance from the magnetic circuit system 2 and driven by the magnetic circuit system 2 to vibrate along the thickness direction, a first elastic member 42 connected to the drive unit 41 and fixed to the frame 1, and a tactile material 43 connected to the side of the first elastic member away from the drive unit 41.

[0027] In this embodiment, the vibration system 3 is driven by the magnetic circuit system 2 to produce sound along the thickness direction, and the drive unit 41 is elastically connected to the frame 1. The magnetic circuit system 2 drives the drive unit 41 in the tactile system 4 to vibrate along the thickness direction, thereby driving the drive unit 41 to vibrate the tactile material 43, and ultimately transmitting the vibration signal to the skin. By mounting the vibration system 3 and the tactile system 4 in a single housing and sharing the same magnetic circuit system 2, not only is it possible to transmit audio signals, but tactile feedback can also be realized through vibration signals, achieving the effect of multifunctional feedback. Furthermore, by sharing one magnetic circuit system 2, costs and occupied space can be saved.

[0028] Furthermore, as shown in Figures 2-8, the magnetic circuit system 2 includes a first magnetic yoke 21 fixedly connected to the frame 1, magnetic steel 22 fixed within the first magnetic yoke 21, and a pole plate 23 fixed to the side of the magnetic steel 22 adjacent to the vibration system 3. The first magnetic yoke 21 has a housing cavity 215, and the drive unit 41 is housed within the housing cavity 215.

[0029] Specifically, the pole plate 23 has a plate-like structure, one surface of the pole plate 23 is in contact with the top surface of the magnetic steel 22, and the bottom surface of the magnetic steel 22 is in contact with the bottom surface of the first magnetic yoke 21.

[0030] In the first and second embodiments, the first magnetic yoke 21 has groove walls 211 on each of its four sides, extending from the bottom surface toward the magnetic circuit system 2. The groove walls 211 and the magnetic steel 22 form a magnetic gap, and the wall surfaces of two symmetrical groove walls 211 abut against the inner wall of the frame 1. Convex blocks 212 are installed at the four corners of the first magnetic yoke 21, and positioning blocks 11 corresponding to the positions of the convex blocks 212 are installed at the four corners on the bottom side of the frame 1, with the side walls of the convex blocks 212 abutting against the side walls of the positioning blocks 11. The first magnetic yoke 21 has recessed grooves 213 installed inside the convex blocks 212, and a corresponding projection structure 12 is installed on the frame 1, with the projection structure 12 located within the recessed grooves 213. A position limiting groove 13 is further installed inside the projection structure 12, with the side corners 214 of the first magnetic yoke 21 located within the position limiting grooves 13. The above structure ensures a stable connection between the first magnetic yoke 21 and the frame 1, while simultaneously facilitating the assembly of the first magnetic yoke 21 and the frame 1.

[0031] In the third embodiment, the first magnetic yoke 21 has groove walls 211 on both sides thereof, each extending from the bottom surface toward the magnetic circuit system 2. The groove walls 211 and the magnetic steel 22 form a magnetic gap, and recessed grooves 213 are provided at the four inner corners of the first magnetic yoke 21. The frame 1 has correspondingly installed projection structures 12, which are located within the recessed grooves 213. The magnetic circuit system 2 further includes connecting members 25. The connecting members 25 are fixed between the pole plate 23 and the first magnetic yoke 21. This structure ensures a stable connection between the first magnetic yoke 21, the frame 1, and the magnetic circuit system 2, while simultaneously facilitating the assembly of the first magnetic yoke 21, the frame 1, and the magnetic circuit system 2. It should be understood that the connecting members 25 primarily serve to enhance the connection stability of the magnetic circuit system 2 within the frame 1 and do not have a magnetic conductivity function.

[0032] Furthermore, as shown in Figures 2-6, the drive unit 41 includes an iron core 411 fixedly mounted on the side of the first elastic member 42 away from the tactile material 43, and a coil 412 fitted outside the iron core 411. Both the iron core 411 and the coil 412 are housed within the housing cavity 215.

[0033] Specifically, the coil 412 has a hollow structure, and the iron core 411 is inserted inside the coil 412. A housing cavity 215 is installed in the first magnetic yoke 21. The multifunctional feedback device further includes a second flexible circuit board 6 connected to both ends of the housing cavity 215, with its top surface in contact with the drive unit 41 and its bottom surface in contact with the first elastic member 42. The coil 412 is electrically connected to the second flexible circuit board, and the tactile material 43 is in direct contact with the skin. Since the iron core 411 is a paramagnetic material, it has high magnetic permeability, and when the iron core 411 is inserted into the energized coil 412, the iron core 411 is magnetized by the magnetic field of the energized coil 412, greatly increasing the magnetic induction strength inside the iron core 411, and the magnetized iron core 411 also becomes a magnet, and in this way the two magnetic fields superimpose on each other, thereby greatly improving the magnetism of the coil 412. The drive unit 41 is elastically connected to the frame 1, and the magnetic circuit system 2 generates a driving force that vibrates along the thickness direction relative to the drive unit 41, which in turn imparts thrust to the tactile material 43, thereby enabling the drive unit 41 to drive the vibration of the tactile material 43, ultimately transmitting the vibration signal to the skin and achieving the effect of tactile feedback.

[0034] In this embodiment, there are three different configurations for the connection between the magnetic circuit system 2 and the tactile system 4. In the first embodiment, as shown in Figures 3 and 5, the magnetic circuit system 2 further includes a pole plate ring 24 fixed to the magnetic steel 22 and fitted outside the coil 412, with a gap between the pole plate ring 24 and the coil 412. Furthermore, the magnetic steel 22 has a retraction groove 221 that communicates with a housing cavity 215, and the pole plate ring 24 is fitted into the retraction groove 221.

[0035] Specifically, the top surface of the second flexible circuit board 6 is in contact with the bottom surface of the coil 412, the pole plate ring 24 is installed surrounding the outside of the coil 412, the height of the pole plate ring 24 is less than the height of the coil 412, part of the outer wall of the pole plate ring 24 is in contact with the inner wall of the housing cavity 215 of the first magnetic yoke 21, and part of the outer wall of the pole plate ring 24 is in contact with the inner wall of the retraction groove 221, and a gap exists between the inner wall of the pole plate ring 24 and the coil 412.

[0036] In the second embodiment, as shown in Figures 4 and 6, the drive unit 41 further includes a second magnetic yoke 44 which is fixed to the first elastic member 42 and covers the outside of the iron core 411 and the coil 412.

[0037] Specifically, the second magnetic yoke 44 is installed in the housing cavity 215 of the first magnetic yoke 21, the outer surface of the bottom of the second magnetic yoke 44 is connected to the second flexible circuit board 6 and the inner surface of the bottom is in contact with the drive unit 41, and there is a gap between the outer surface of the side of the second magnetic yoke 44 and the magnetic steel 22.

[0038] In the third embodiment, the magnetic steel 22 includes a first magnetic steel 222 and a second magnetic steel 223, wherein the second magnetic steel 223 is installed outside the first magnetic steel 222 and has a gap between it and the first magnetic steel 222, and correspondingly, a first pole plate 231 and a second pole plate 232 are installed, the second pole plate 232 is fitted outside the first pole plate 231, the bottom surface of the first pole plate 231 is in contact with the top surface of the first magnetic steel 222, and the bottom surface of the second pole plate 232 is in contact with the top surface of the second magnetic steel 223. By setting up the joint action of the first magnetic steel 222 and the second magnetic steel 223, the magnetism can be increased.

[0039] Furthermore, in the first and second embodiments, the first elastic member 42 is installed as a spring, the spring is fixed to the side of the first magnetic yoke 21 away from the vibration system 3, the spring is attached to the iron core 411 and the coil 412 respectively, and the tactile material 43 can be a rectangular silica gel or a polymer soft flexible material such as rubber.

[0040] The magnetic circuit system 2 generates a driving force that vibrates along the thickness direction for the drive unit 41, deforms the spring to generate an elastic force, and the spring acts on the flexible material, thereby enabling the drive unit 41 to drive the vibration of the tactile material 43. Finally, the vibration signal is transmitted to the skin, achieving the effect of tactile feedback.

[0041] In the third embodiment, the first elastic member 42 may be a sealing film 421, which is fixed to the side of the first magnetic yoke 21 away from the vibration system 3, and is attached to the iron core 411 and the coil 412, respectively. The tactile material 43 can be an external pressure block 431. The external pressure block 431 may be in the shape of a rectangular cover. The external pressure block 431 is attached to the side of the sealing film 421 away from the drive unit 41 and covers a portion of the sealing film 421. The material of the external pressure block 431 may be silica gel or rubber, or other materials.

[0042] By making the first elastic member 42 a sealing film 421, the feedback device can be sealed, isolating it from the outside and effectively preventing external dust or sweat from the skin from flowing into the feedback device and affecting its normal operation.

[0043] Furthermore, as shown in Figures 2-6, a magnetic gap is formed between the first magnetic yoke 21 and the magnetic steel 22, and the vibration system 3 includes a vibrating membrane 31 connected to the frame 1, a dome 32 connected to the vibrating membrane 31, and a voice coil 33 connected to the dome 32 and inserted into the magnetic gap.

[0044] Specifically, a folded edge 311 is provided on one side of the outer edge of the diaphragm 31 that is separated from the dome 32, and this is connected to the edge of the frame 1, thereby ensuring the strength of the connection between the diaphragm 31 and the frame 1. The diaphragm 31 includes an inner edge 312 connected to the dome 32 and a folded ring 313 located between the folded edge 311 and the inner edge 312, the folded ring 313 protruding toward the magnetic circuit system 2. After being energized, the voice coil 33 moves perpendicular to the direction of the current driven by the magnetic circuit system 2, the movement of the voice coil 33 drives the vertical vibration of the diaphragm 31, and the vibration of the diaphragm 31 drives the vibration of the air, thereby allowing a person to perceive sound.

[0045] Furthermore, as shown in Figures 2-6, the multifunctional feedback device includes two first flexible circuit boards 5 symmetrically installed at both ends of the magnetic circuit system 2, with one end of each first flexible circuit board 5 fixed to the frame 1 and the other end fixedly connected to the side of the voice coil 33 away from the dome 32.

[0046] Specifically, the first flexible circuit board 5 is electrically connected to the voice coil 33. The circuits containing the voice coil 33 and the coil 412 are independent of each other, so that the voice coil 33 and the coil 412 can operate individually or simultaneously. This makes it easy for the user to decide whether or not to operate the coil 412 and the voice coil 33 in different application scenarios. In other embodiments, a single flexible circuit board having two non-communicating circuits may be employed, with the two circuits connected to the coil 412 and the voice coil 33 respectively, so that the energization of the coil 412 and the energization of the voice coil 33 may be synchronized or not, and sound generation and vibration may occur simultaneously or independently.

[0047] Furthermore, as shown in Figures 1-6, the multifunctional feedback device further includes a second elastic member 7 installed between the magnetic circuit system 2 and the drive unit 41.

[0048] Specifically, the second elastic member 7 can be a rectangular parallelepiped silica gel. In the first embodiment of this model, one side of the silica gel contacts the pole plate 23 and the other side is connected to the drive unit 41. In the second embodiment, one side of the silica gel contacts the magnetic steel 22 and the other side is connected to the drive unit 41. The silica gel provides protection when the coil 412 is energized and vibrates. Furthermore, because the silica gel is elastic, its connection between the magnetic circuit system 2 and the drive unit 41 can increase the pushing force of the magnetic circuit system 2 on the drive unit 41. In other embodiments, a compression spring, an elastic sheet, or the like may be installed on the second elastic member 7.

[0049] An embodiment of the present invention provides a haptic feedback system, referring to Figures 1 and 9-10, which includes a control processing assembly 10, a power amplification circuit 20 electrically connected to the control processing assembly 10, and a multifunctional feedback device 100 according to any one of the above, electrically connected to the power amplification circuit 20, wherein the control processing assembly 10 is used to receive and process AR / VR signals (AR: Augmented Reality, VR: Virtual Reality) and output audio signals and haptic signals to the power amplification circuit 20, the power amplification circuit 20 is used to perform power amplification processing on the audio signals and haptic signals, the vibration system 3 is used to receive the power amplified audio signals, and the haptic system 4 is used to receive the amplified haptic signals.

[0050] Furthermore, as shown in Figures 1 and 12, the control processing assembly 10 includes an MCU controller 101, a first chip processor 102 and a second chip processor 103 whose signals are connected to the MCU controller 101, and the power amplification circuit 20 includes an audio power amplification circuit 20 electrically connected to the first chip processor 102 and the vibration system 3, and a motor power amplification circuit 20 electrically connected to the second chip processor 103 and the tactile system 4. Here, the MCU controller 101 is used to receive and process AR / VR signals to obtain a first signal and a second signal, the first chip processor 102 is used to receive and process the first signal to obtain an audio signal, the second chip processor 103 is used to receive and process the first signal to obtain a tactile signal, the audio power amplification circuit 20 is used to perform power amplification processing on the audio signal, and the motor power amplification circuit 20 is used to perform power amplification processing on the tactile signal.

[0051] Specifically, the audio signal includes a left channel audio signal and a right channel audio signal, the tactile signal includes a left motor tactile signal and a right motor tactile signal, and accordingly, the audio power amplification circuit includes a left audio power amplification circuit 201 and a right audio power amplification circuit 202, the motor power amplification circuit includes a left motor power amplification circuit 203 and a right motor power amplification circuit 204, the vibration system 3 includes a left vibration system 301 and a right vibration system 302, and the tactile system 4 includes a left tactile system 401 and a right tactile system 402.

[0052] When the haptic feedback system is in operation, some signals in the AR / VA signal are transmitted to the MCU controller 101 via a normal stereo path, processed by the MCU controller 101 to obtain a first signal, which is then sent to the first chip processor 102 to obtain an audio signal. Finally, the left channel audio signal, power amplified by the left audio power amplifier circuit 201, is sent to the left vibration system 301, and the right channel audio signal, power amplified by the right audio power amplifier circuit 202, is sent to the right vibration system 302. The haptic feedback system further includes a haptic feedback switch or an intensity adjustment switch. During a game or music process, the haptic feedback switch or intensity adjustment switch is turned on, and the low-frequency signals in the AR / VA signal are transmitted to the MCU controller 101 via a low-frequency enhancement control path, processed by the MCU controller 101 to obtain a second signal, which is then sent to the second chip processor 103 to obtain a tactile signal. The left motor tactile signal and the right motor tactile signal are power amplified by the left motor power amplification circuit 203 and the right motor power amplification circuit 204, respectively, and then transmitted to the left tactile system 401 and the right tactile system 402, respectively, and finally transmitted to the user's skin to provide tactile feedback. In this embodiment, the vibration system 3 and the tactile system 4 are independent power amplifiers and can provide feedback individually.

[0053] The haptic feedback system further includes memory, which stores a haptic feedback effect library and game music files, etc. The chip processor employs a DSP chip (DSP: Digital Signal Processing) whose application technology is mature and widely used in existing technologies, and the power amplification circuit 20 is a circuit design whose design and application are mature in existing technologies, so its explanation is omitted here.

[0054] In another embodiment, as shown in Figures 1 and 13, the vibration system 3 and the tactile system 4 are connected in series, the tactile feedback system further includes a capacitor connected in parallel with the tactile system 4, the control processing assembly 10 includes an MCU controller 101 and a signal processing assembly 104 to which signals are connected to the MCU controller 101, the power amplification circuit 20 includes an audio power amplification circuit 20 electrically connected to the signal processing assembly 104 and the vibration system 3, the vibration system 3 is electrically connected to the audio power amplification circuit 20, where the MCU controller 101 is used to receive and process AR / VR signals to obtain a first signal and a second signal, the signal processing assembly 104 is used to receive and process the first signal and the second signal to obtain a mixed wave signal, the mixed wave signal includes an audio signal corresponding to the first signal and a tactile signal corresponding to the second audio, the audio power amplification circuit 20 is used to perform power amplification processing on the mixed wave signal, and the amplified mixed wave signal is sequentially transmitted to the vibration system 3 and the tactile system 4.

[0055] Specifically, the haptic feedback system further includes a haptic feedback switch or an intensity adjustment switch, and the signal processing assembly 104 includes a mixer 1041 and a third chip processor 1042. In a game or music process, the haptic feedback switch or intensity adjustment switch is turned on, and a partial signal in the AR / VA signal is transmitted to the MCU controller 101 by a normal stereo path, where the low-frequency signal is transmitted to the MCU controller 101 by a low-frequency emphasis control path to obtain a first signal and a second signal, respectively, and transmits the first signal and the second signal to the processing assembly 104, which processes the first signal and the second signal to obtain an audio signal and a haptic signal, respectively, and mixes the audio signal and the haptic signal to obtain a mixed wave signal, the mixed wave signal includes a left mixed wave signal and a right mixed wave signal, and finally the left audio power The left mixed wave signal, after power amplification by the amplification circuit 201, is transmitted to the left vibration system 301, and the right mixed wave signal, after power amplification by the right audio power amplification circuit 202, is transmitted to the right vibration system 302. The left vibration system 301 is connected in series with the left tactile system, and the right vibration system 302 is connected in series with the right tactile system, realizing common power amplification of vibration system 3 and tactile system 4. The capacitors include a first capacitor 501 and a second capacitor 502. The left tactile system 401 and the first capacitor 501 are connected in parallel, and the right tactile system 402 and the second capacitor 502 are connected in parallel, achieving a low-pass effect.

[0056] Furthermore, as shown in Figures 9-10, processing the AR / VR signal and outputting the audio signal and haptic signal to the power amplifier circuit 20 includes calling a haptic feedback signal effect library based on the AR / VR signal to obtain the haptic signal, which is less than 80 Hz.

[0057] Specifically, the content of the AR / VR signal is transmitted to the MCU controller 101. Based on the feature signals of the AR / VR signal content, the MCU controller 101 calls up a haptic feedback signal effect library, matches it with the effect signals in the haptic feedback signal effect library, and obtains a second signal. After that, the MCU controller 101 further outputs the first and second signals. The experiential effect of signals with a frequency of 80Hz or less is best in the human head, and signals greater than 80Hz cause significant discomfort to the human head's perception. Therefore, the haptic signals of the present invention are less than 80Hz.

[0058] An embodiment of the present invention provides AR / VR glasses, which, as shown in Figure 14, include a lens frame 200 and a haptic feedback system (not shown) installed on the lens frame 200, the haptic feedback system including the multi-functional feedback device 100 described above.

[0059] Specifically, the lens frame 200 includes a left mounting foot and a right mounting foot, each equipped with a multi-functional feedback device 100. Here, the left vibration system 301 and the left tactile system 401 are mounted on the left mounting foot, and the right vibration system 302 and the right tactile system 402 are mounted on the right mounting foot. The tactile material 43 in the multi-functional feedback device 100 on both mounting feet is located on the inside. When a user wears the AR / VR glasses of the present invention and a tactile signal is generated, the drive unit 41 can be driven to vibrate the tactile material 43. The tactile material 43 generates thrust and transmits it to the skin, which may provide a reminder through vibration on the person's head, or through voice, thus meeting a variety of needs.

[0060] The above are merely embodiments of the present invention, and those skilled in the art can make improvements without departing from the spirit of the invention, but it should be noted that all such improvements fall within the scope of protection of the present invention.

Claims

1. A multi-functional feedback device, The system includes a frame, a magnetic circuit system fixed within the frame, and a vibration system connected to the frame and driven by the magnetic circuit system to produce sound along the thickness direction. The multifunctional feedback device further includes a tactile system installed opposite the vibration system, The tactile system includes a drive unit installed at a distance from the magnetic circuit system and driven by the magnetic circuit system to vibrate along the thickness direction, a first elastic member connected to the drive unit and fixed to the frame, and a tactile material attached to the side of the first elastic member away from the drive unit. The magnetic circuit system includes a first magnetic yoke fixedly connected to the frame, magnetic steel fixed within the first magnetic yoke, and a pole plate fixed to the side of the magnetic steel adjacent to the vibration system, wherein the first magnetic yoke has a housing cavity, and the drive unit is housed within the housing cavity. The vibration system and the tactile system share one of the magnetic circuit systems. The drive unit includes an iron core fixedly mounted on the side of the first elastic member away from the tactile material, and a coil fitted outside the iron core, wherein both the iron core and the coil are housed within the housing cavity, characterized in that the multifunctional feedback device is characterized in that

2. The multifunctional feedback device according to claim 1, wherein the magnetic circuit system further includes a pole plate ring fixed to the magnetic steel and fitted outside the coil, and there is a gap between the pole plate ring and the coil.

3. The multifunctional feedback device according to claim 2, characterized in that the magnetic steel has a retraction groove that communicates with the housing cavity, and the pole plate ring is fitted into the retraction groove.

4. The multifunctional feedback device according to claim 1, characterized in that the drive unit further includes a second magnetic yoke fixed to the first elastic member and covering the outside of the iron core and the coil.

5. The multifunctional feedback device according to claim 1, characterized in that the first elastic member includes a sealing film, the sealing film is fixed to the side of the first magnetic yoke away from the vibration system, and the sealing film is attached to the iron core and the coil, respectively.

6. The multifunctional feedback device according to claim 5, characterized in that the tactile material includes an external pressure block, the external pressure block is installed on the side of the sealing film that is away from the iron core and the coil.

7. The multifunctional feedback device according to claim 6, wherein the magnetic circuit system further includes a connecting member, the connecting member being fixed between the pole plate and the first magnetic yoke.

8. The multifunctional feedback device according to claim 1, characterized in that a magnetic gap is formed between the first magnetic yoke and the magnetic steel, and the vibration system includes a vibrating membrane connected to the frame, a dome connected to the vibrating membrane, and a voice coil connected to the dome and inserted into the magnetic gap.

9. The multifunctional feedback device according to claim 8, further comprising two first flexible circuit boards symmetrically installed at both ends of the magnetic circuit system, wherein one end of each first flexible circuit board is fixed to the frame and the other end is fixedly connected to the side of the voice coil away from the dome.

10. A multi-functional feedback device, The system includes a frame, a magnetic circuit system fixed within the frame, and a vibration system connected to the frame and driven by the magnetic circuit system to produce sound along the thickness direction. The multifunctional feedback device further includes a tactile system installed opposite the vibration system, The tactile system includes a drive unit installed at a distance from the magnetic circuit system and driven by the magnetic circuit system to vibrate along the thickness direction, a first elastic member connected to the drive unit and fixed to the frame, and a tactile material attached to the side of the first elastic member away from the drive unit. The magnetic circuit system includes a first magnetic yoke fixedly connected to the frame, magnetic steel fixed within the first magnetic yoke, and a pole plate fixed to the side of the magnetic steel adjacent to the vibration system, wherein the first magnetic yoke has a housing cavity, and the drive unit is housed within the housing cavity. The vibration system and the tactile system share one of the magnetic circuit systems. The multifunctional feedback device is characterized in that it further includes a second elastic member installed between the magnetic circuit system and the drive unit.

11. It is a haptic feedback system, The device includes a control processing assembly, a power amplification circuit electrically connected to the control processing assembly, and a multi-functional feedback device according to any one of claims 1 to 10 electrically connected to the power amplification circuit, The control processing assembly is used to receive and process AR / VR signals and output audio signals and tactile signals to the power amplification circuit. The aforementioned power amplification circuit is used to perform power amplification processing on the audio signal and the tactile signal. A tactile feedback system characterized in that the vibration system is used to receive an audio signal after power amplification, and the tactile system is used to receive an amplified tactile signal.

12. The control processing assembly includes an MCU controller, a first chip processor and a second chip processor to which signals are connected to the MCU controller, and the power amplification circuit includes an audio power amplification circuit electrically connected to the first chip processor and the vibration system, and a motor power amplification circuit electrically connected to the second chip processor and the tactile system. The MCU controller is used to receive and process the AR / VR signal to obtain the first signal and the second signal; the first chip processor is used to receive and process the first signal to obtain the audio signal; and the second chip processor is used to receive and process the first signal to obtain the tactile signal. The tactile feedback system according to claim 11, characterized in that the audio power amplification circuit is used to perform power amplification processing on the audio signal, and the motor power amplification circuit is used to perform power amplification processing on the tactile signal.

13. The vibration system and the tactile system are connected in series, the tactile feedback system further includes a capacitor connected in parallel with the tactile system, the control processing assembly includes an MCU controller and a signal processing assembly to which signals are connected with the MCU controller, the power amplification circuit includes an audio power amplification circuit electrically connected to the signal processing assembly and the vibration system, and the vibration system is electrically connected to the audio power amplification circuit. The MCU controller is used to receive and process AR / VR signals to obtain a first signal and a second signal, and the signal processing assembly is used to receive and process the first signal and the second signal to obtain a mixed wave signal, the mixed wave signal includes an audio signal corresponding to the first signal and a tactile signal corresponding to the second signal. The tactile feedback system according to claim 11, characterized in that the audio power amplification circuit is used to perform power amplification processing on the mixed wave signal, and the amplified mixed wave signal is sequentially transmitted to the vibration system and the tactile system.

14. The haptic feedback system according to claim 11, characterized in that processing the AR / VR signal and outputting an audio signal and a haptic signal to the power amplification circuit includes calling a haptic feedback signal effect library based on the AR / VR signal to obtain the haptic signal, wherein the haptic signal is less than 80 Hz.

15. AR / VR glasses, characterized by including a lens frame and a haptic feedback system according to claim 11 installed in the lens frame.

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