Multi-function 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 in particular to a multi-function feedback device. [Background technology]

[0002] Virtual reality (VR) technology allows humans to feel immersed in a virtual environment by simulating it using a computer, while augmented reality (AR) technology skillfully blends virtual information with the real world. Both VR and AR technologies, as well as related AR / VR products, are widely used in fields such as advanced weapons, aircraft manufacturing and development, data model visualization, entertainment, and art.

[0003] However, although the AR / VR products of related technology all transmit audio signals through speakers to realize reminder or game functions, in the actual usage process, audio reminders alone cannot meet the usage needs of users.

[0004] Therefore, there is a need to provide a multi-function feedback device. Summary of the Invention [Problem to be solved by the invention]

[0005] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a multi-function feedback device that can overcome at least some of the deficiencies in the related art. [Means for solving the problem]

[0006] The technical proposal of the present invention is as follows: A multifunction 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 a thickness direction, the multifunction feedback device further comprising a tactile system installed opposite the vibration system, the tactile system including: a driving 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 driving unit and fixed to the frame; and a tactile material connected to one side of the first elastic member away from the driving unit.

[0007] Further, the magnetic circuit system includes a first magnetic yoke fixedly connected to the frame, a 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, the first magnetic yoke having an accommodating cavity, and the driving unit being accommodated within the accommodating cavity.

[0008] Furthermore, the driving unit includes an iron core fixedly mounted on the side of the first elastic member facing away from the tactile material, and a coil fitted around the iron core, and both the iron core and the coil 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 recess formed therein that communicates with the accommodating cavity, and the pole plate ring is fitted into the recess.

[0011] Furthermore, the driving portion further includes a second magnetic yoke fixed to the first elastic member and covering 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 that faces 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 outer pressing block, and the outer pressing block is disposed on a side of the sealing film that faces away from the iron core and the coil.

[0014] Furthermore, the magnetic circuit system further includes a connecting member, and the connecting member 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 vibrating membrane connected to the frame, a dome connected to the vibrating membrane, and a voice coil connected to the dome and inserted in the magnetic gap.

[0016] Furthermore, the multi-function feedback device further includes two first flexible circuit boards symmetrically installed at both ends of the magnetic circuit system, one end of the first flexible circuit board being fixed to the frame and the other end being fixedly connected to the side of the voice coil facing away from the dome.

[0017] In addition, the multi-function feedback device further includes a second elastic member disposed between the magnetic circuit system and the driving part.

[0018] A haptic feedback system comprising: a control processing assembly; a power amplification circuit electrically connected to the control processing assembly; and a multi-function feedback device described in any one of the above claims electrically connected to the power amplification circuit, wherein the control processing assembly is used to receive and process AR / VR signals and 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 the 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] Further, the control processing assembly includes an MCU controller, a first chip processor and a second chip processor whose signals are connected to the MCU controller, and the power amplifier circuit includes an audio power amplifier circuit electrically connected to the first chip processor and the vibration system, and a motor power amplifier circuit electrically connected to the second chip processor and the haptic 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 haptic signal, the audio power amplifier circuit is used to perform power amplification processing on the audio signal, and the motor power amplifier circuit is used to perform power amplification processing on the haptic signal.

[0020] Further, the vibration system and the haptic system are connected in series, and the haptic feedback system further includes a capacitor connected in parallel to the haptic system, the control processing assembly includes an MCU controller and a signal processing assembly whose signals are connected to the MCU controller, the power amplifier circuit includes an audio power amplifier circuit electrically connected to the signal processing assembly and the vibration system, and the vibration system is electrically connected to the audio power amplifier 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 haptic signal corresponding to the second audio, and the audio power amplifier circuit is used to perform power amplification processing on the mixed wave signal, and the amplified mixed wave signal is transmitted sequentially to the vibration system and the haptic system.

[0021] Further, processing the AR / VR signal and outputting an audio signal and a haptic signal to the power amplification circuit includes invoking 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] The AR / VR glasses include a lens frame and a haptic feedback system described in any one of the above, which is installed in the lens frame. Effect of the Invention

[0023] The beneficial effects of the present invention are as follows: The present invention provides a multi-function feedback device, a haptic feedback system, and AR / VR glasses. The multi-function feedback device of the present invention implements a vibration system and a haptic system in one housing and shares the same magnetic circuit system, thereby not only realizing the transmission of audio signals, but also realizing haptic feedback through vibration signals, achieving the effect of multi-function feedback, and also sharing the same magnetic circuit system, thereby saving costs and occupying space. The haptic feedback system includes a multi-function feedback device, where the vibration system and the haptic system can be independent power amplification or common power amplification. The AR / VR glasses implement a haptic feedback system in a lens frame, and when a user uses the glasses, a reminder is implemented by vibration or sound on the person's head, which can meet various demands. [Brief description of the drawings]

[0024] [Figure 1] FIG. 2 is a conceptual diagram showing the layout of functional modules of a multi-function feedback device according to an embodiment of the present invention. [Diagram 2] 1 is a schematic perspective view showing a configuration of a multi-function feedback device according to a first and second embodiment of an embodiment of the present invention; [Diagram 3] 3 is a schematic cross-sectional view of the multifunction feedback device according to the first embodiment of the present invention taken along the line AA in FIG. 2. [Figure 4] 3 is a schematic cross-sectional view of a multifunction feedback device according to a second embodiment of the present invention taken along the line AA in FIG. 2. FIG. [Diagram 5] FIG. 11 is a schematic perspective view showing a configuration of a multi-function feedback device according to a third embodiment of the present invention. [Figure 6] 6 is a schematic cross-sectional view of a multifunction feedback device according to a third embodiment of the present invention taken along the line AA in FIG. 5. [Figure 7]FIG. 2 is a schematic perspective view showing an exploded configuration of the multifunction feedback device according to the first embodiment of the present invention; [Figure 8] FIG. 11 is a schematic perspective view showing an exploded configuration of a multifunction feedback device according to a second embodiment of the present invention; [Figure 9] FIG. 11 is a schematic perspective view showing an exploded configuration of a multifunction feedback device according to a third embodiment of the present invention. [Figure 10] FIG. 2 is a bottom view of the multi-function feedback device according to the embodiment of the present invention. [Figure 11] FIG. 8 is an enlarged view of detail A of FIG. [Figure 12] FIG. 1 is a principle diagram showing a link configuration of a haptic feedback system according to an embodiment of the present invention. [Figure 13] FIG. 11 is a principle diagram showing a link configuration of a haptic feedback system according to another embodiment of the present invention. [Figure 14] FIG. 2 is a schematic diagram showing a partial configuration of AR / VR glasses according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

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

[0026] In an embodiment of the present invention, a multifunctional feedback device is provided, and as shown in Figures 1 to 8, the multifunctional feedback device 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 a thickness direction, and the multifunctional feedback device further includes a tactile system 4 installed opposite the vibration system 3, and the tactile system 4 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 facing away from the drive unit 41.

[0027] In this embodiment, the magnetic circuit system 2 drives the vibration system 3 to make sound along the thickness direction, and the driving unit 41 is elastically connected to the frame 1, and the magnetic circuit system 2 drives the driving unit 41 in the tactile system 4 to vibrate along the thickness direction, so that the driving unit 41 drives the tactile material 43 to vibrate, and finally transmits the vibration signal to the skin. By mounting the vibration system 3 and the tactile system 4 in one housing and sharing the same magnetic circuit system 2, not only can the transmission of audio signals be realized, but also tactile feedback can be realized by the vibration signal, achieving the effect of multi-function feedback, and also saving costs and occupancy space due to sharing one magnetic circuit system 2.

[0028] Furthermore, as shown in Figures 2 to 8, the magnetic circuit system 2 includes a first magnetic yoke 21 fixedly connected to the frame 1, a 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, and the first magnetic yoke 21 has an accommodating cavity 215, and the driving unit 41 is accommodated within the accommodating cavity 215.

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

[0030] In the first and second embodiments, the first magnetic yoke 21 is provided with groove walls 211 on four sides, 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 the wall surfaces of the two symmetrical groove walls 211 abut against the inner wall of the frame 1. The first magnetic yoke 21 is provided with convex blocks 212 at four corners, and the frame 1 is provided with positioning blocks 11 corresponding to the positions of the convex blocks 212, and the side walls of the convex blocks 212 abut against the side walls of the positioning blocks 11. The first magnetic yoke 21 is further provided with a concave groove 213 on the inner side of the convex block 212. The frame 1 is correspondingly provided with a protrusion structure 12, the protrusion structure 12 is located in the concave groove 213, and the protrusion structure 12 is further provided with a position limiting groove 13 on the inner side, and the side corners 214 of the first magnetic yoke 21 are located in the position limiting groove 13. The above structure realizes a stable connection between the first magnetic yoke 21 and the frame 1, and at the same time makes it easy to assemble the first magnetic yoke 21 and the frame 1 together.

[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. The first magnetic yoke 21 has grooves 213 on the inner four corners thereof. The frame 1 has protrusion structures 12 correspondingly installed thereon, and the protrusion structures 12 are located in the grooves 213. The magnetic circuit system 2 further includes a connecting member 25. The connecting member 25 is fixed between the pole plate 23 and the first magnetic yoke 21. The above structure realizes a stable connection between the first magnetic yoke 21, the frame 1, and the magnetic circuit system 2, and at the same time, facilitates the assembly of the first magnetic yoke 21, the frame 1, and the magnetic circuit system 2. It should be understood that the connecting member 25 mainly plays a role of enhancing the connection stability of the magnetic circuit system 2 in the frame 1, and does not have a magnetic conduction function.

[0032] Furthermore, as shown in Figures 2 to 6, the driving unit 41 includes an iron core 411 fixedly mounted on the side of the first elastic member 42 facing away from the tactile material 43, and a coil 412 fitted around the outside of the iron core 411, and 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 into the coil 412. The first magnetic yoke 21 is provided with a receiving cavity 215. The multi-function feedback device further includes a second flexible circuit board 6 connected to both ends of the receiving cavity 215, with a top surface contacting the driving part 41 and a bottom surface contacting the first elastic member 42. The coil 412 is electrically connected to the second flexible circuit board, and the tactile material 43 directly contacts the skin. The iron core 411 is a paramagnetic material, and therefore has a large magnetic permeability. 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, which greatly increases the magnetic induction strength inside the iron core 411, and the magnetized iron core 411 also becomes a magnet, and thus the two magnetic fields overlap each other, thereby greatly improving the magnetism of the coil 412. The driving unit 41 is elastically connected to the frame 1, and the magnetic circuit system 2 generates a driving force for the driving unit 41 to vibrate along the thickness direction, and the driving unit 41 provides a thrust to the tactile material 43, thereby enabling the driving unit 41 to drive the vibration of the tactile material 43, and finally transmitting the vibration signal to the skin to achieve the effect of tactile feedback.

[0034] The connection relationship between the magnetic circuit system 2 and the tactile system 4 in this embodiment can be implemented in three different ways. 3 and 5, in the first embodiment, the magnetic circuit system 2 further includes a pole plate ring 24 fixed to the magnetic steel 22 and fitted around the coil 412, and there is a gap between the pole plate ring 24 and the coil 412. Furthermore, the magnetic steel 22 is provided with a retraction groove 221 communicating with the accommodating 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 contacts 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 smaller than the height of the coil 412, a part of the outer wall of the pole plate ring 24 contacts the inner wall of the accommodating cavity 215 of the first magnetic yoke 21, another part of the outer wall of the pole plate ring 24 contacts the inner wall of the retreat 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 FIGS. 4 and 6, the driving unit 41 further includes a second magnetic yoke 44 that 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 accommodating 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 driving part 41, and a gap exists 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, the second magnetic steel 223 is installed outside the first magnetic steel 222 and has a gap with 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 contacts the top surface of the first magnetic steel 222, and the bottom surface of the second pole plate 232 contacts the top surface of the second magnetic steel 223. By setting the cooperation of the first magnetic steel 222 and the second magnetic steel 223, the magnetism can be enhanced.

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

[0040] The magnetic circuit system 2 generates a driving force for the driving unit 41 to vibrate along the thickness direction, which deforms the spring to generate an elastic force, and the spring acts on the flexible material, thereby enabling the driving unit 41 to drive the vibration of the tactile material 43, and finally transmitting the vibration signal to the skin to achieve 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 facing away from the vibration system 3, and the sealing film 421 is attached to the iron core 411 and the coil 412. The tactile material 43 may be an outer push block 431. The outer push block 431 may be in the form of a rectangular cover. The outer push block 431 is attached to the side of the sealing film 421 facing away from the drive unit 41, and covers a part of the sealing film 421. The material of the outer push block 431 may be a material such as silica gel or rubber.

[0042] By making the first elastic member 42 into a sealing film 421, the feedback device can be sealed, the feedback device can be isolated from the outside, and external dust or sweat on the skin, etc. can be effectively prevented from flowing into the inside of the feedback device and affecting the normal use of the feedback device.

[0043] Furthermore, as shown in Figures 2 to 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 in the magnetic gap.

[0044] Specifically, a folded edge 311 is provided on one side of the outer edge of the diaphragm 31 that is spaced apart from the dome 32 and that 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 that is connected to the dome 32, and a folded ring 313 that is located between the folded edge 311 and the inner edge 312, and the folded ring 313 protrudes toward the magnetic circuit system 2. After being energized, the voice coil 33 moves perpendicular to the direction of the current in the voice coil 33 by being driven by the magnetic circuit system 2, and the movement of the voice coil 33 drives the up and down vibration of the diaphragm 31, and the vibration of the diaphragm 31 drives the vibration of the air, thereby allowing a person to feel the sound.

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

[0046] Specifically, the first flexible circuit board 5 is electrically connected to the voice coil 33. The circuits in which the voice coil 33 and the coil 412 are located 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 to operate the coil 412 and the voice coil 33 in different application scenarios. In another embodiment, one flexible circuit board having two circuits that are not in communication may be adopted, and the two circuits are respectively connected to the coil 412 and the voice coil 33, so that the current supply to the coil 412 and the current supply to the voice coil 33 may be synchronous or not synchronous, and the sound and vibration may be performed simultaneously or independently.

[0047] Furthermore, as shown in FIGS. 1 to 6, the multifunction feedback device further includes a second elastic member 7 disposed between the magnetic circuit system 2 and the driving unit 41.

[0048] Specifically, the second elastic member 7 can be a rectangular parallelepiped silica gel, and in the first embodiment of this embodiment, one side of the silica gel contacts the pole plate 23 and the other side is connected to the driving 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 driving unit 41. The silica gel plays a protective role when the coil 412 is energized and vibrates, and since the silica gel has elasticity, it can increase the pressing force of the magnetic circuit system 2 against the driving unit 41 by being connected between the magnetic circuit system 2 and the driving unit 41. In other embodiments, a compression spring, an elastic sheet, etc. may be installed in the second elastic member 7.

[0049] In an embodiment of the present invention, a haptic feedback system is provided, which, with reference to Figs. 1 and 9-10, includes a control processing assembly 10, a power amplifier circuit 20 electrically connected to the control processing assembly 10, and a multi-function feedback device 100 according to any one of the above, electrically connected to the power amplifier 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 amplifier circuit 20, the power amplifier 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 audio signals after power amplification, and the haptic system 4 is used to receive the haptic signals after amplification.

[0050] Further, as shown in FIG. 1 and FIG. 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 amplifier circuit 20 includes an audio power amplifier circuit 20 electrically connected to the first chip processor 102 and the vibration system 3, and a motor power amplifier circuit 20 electrically connected to the second chip processor 103 and the haptic system 4, where the MCU controller 101 is used to receive and process the AR / VR signal 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 haptic signal, the audio power amplifier circuit 20 is used to perform power amplification processing on the audio signal, and the motor power amplifier circuit 20 is used to perform power amplification processing on the haptic 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 correspondingly, the audio power amplifier circuit includes a left audio power amplifier circuit 201 and a right audio power amplifier circuit 202, the motor power amplifier circuit includes a left motor power amplifier circuit 203 and a right motor power amplifier 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 works, some signals in the AR / VA signal are transmitted to the MCU controller 101 through a normal stereo path, and after being processed by the MCU controller 101, a first signal is obtained, which is then sent to the first chip processor 102 to obtain an audio signal, and 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, and in the game or music process, the haptic feedback switch or the intensity adjustment switch is turned on, and the low-frequency signal in the AR / VA signal is transmitted to the MCU controller 101 through a low-frequency emphasis control path, and after being processed by the MCU controller 101, a second signal is obtained, which is then sent to the second chip processor 103 to obtain a haptic signal. The left motor tactile signal and the right motor tactile signal are power amplified by the left motor power amplifier circuit 203 and the right motor power amplifier 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 achieve the tactile feedback effect. In this embodiment, the vibration system 3 and the tactile system 4 are independent power amplifiers and can be fed back separately.

[0053] The haptic feedback system further includes a memory in which a haptic feedback effect library and game music files, etc. are stored. The chip processor adopts a DSP chip (DSP: Digital Signal Processing), which has mature and widely applied application technology in existing technology, and the power amplifier circuit 20 is a circuit design that has mature design and application in existing technology, so a description thereof will be omitted here.

[0054] In another embodiment, as shown in FIG. 1 and FIG. 13 , the vibration system 3 and the haptic system 4 are connected in series, and the haptic feedback system further includes a capacitor connected in parallel with the haptic system 4, the control processing assembly 10 includes an MCU controller 101 and a signal processing assembly 104 whose signals are connected to the MCU controller 101, the power amplifier circuit 20 includes an audio power amplifier circuit 20 electrically connected to the signal processing assembly 104 and the vibration system 3, and the vibration system 3 is electrically connected to the audio power amplifier circuit 20, where the MCU controller 101 is used to receive and process the AR / VR signal 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 haptic signal corresponding to the second audio, and the audio power amplifier circuit 20 is used to perform power amplification processing on the mixed wave signal, and the amplified mixed wave signal is transmitted sequentially to the vibration system 3 and the haptic 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 the game or music process, the haptic feedback switch or the intensity adjustment switch is turned on, and the partial signal in the AR / VA signal is transmitted to the MCU controller 101 through a normal stereo path, where the low-frequency signal is transmitted to the MCU controller 101 through a low-frequency emphasis control path to obtain a first signal and a second signal respectively, and sends the first signal and the second signal to the processing assembly 104, the processing assembly 104 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 outputs the left audio power The left mixed wave signal after being power amplified by the amplifier circuit 201 is transmitted to the left vibration system 301, and the right mixed wave signal after being power amplified by the right audio power amplifier circuit 202 is transmitted to the right vibration system 302, the left vibration system 301 is connected in series to the left tactile system, and the right vibration system 302 is connected in series to the right tactile system, thereby realizing common power amplification of the vibration system 3 and the tactile system 4, and the capacitor includes 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, which can achieve the effect of low-pass.

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

[0057] Specifically, the content of the AR / VR signal is transmitted to the MCU controller 101, and the MCU controller 101 calls a haptic feedback signal effect library based on the feature signal of the content of the AR / VR signal, and matches it with the effect signal in the haptic feedback signal effect library to obtain a second signal, and then the MCU controller 101 further outputs the first signal and the second signal. Since the experience effect of a signal with a frequency of 80 Hz or less in a human head is the best, and a signal higher than 80 Hz is very uncomfortable for the physical sensation of a human head, the haptic signal of the present invention is lower than 80 Hz.

[0058] In an embodiment of the present invention, AR / VR glasses are provided, which include a lens frame 200 and the above-mentioned haptic feedback system (not shown) installed on the lens frame 200, as shown in FIG. 14, and the haptic feedback system includes the above-mentioned multi-function feedback device 100.

[0059] Specifically, the lens frame 200 includes a left mounting foot and a right mounting foot, each of which is equipped with a multi-function feedback device 100, where the left vibration system 301 and the left tactile system 401 are implemented on the left mounting foot, and the right vibration system 302 and the right tactile system 402 are implemented on the right mounting foot, and the tactile materials 43 in the multi-function feedback devices 100 of the two mounting feet are both located on the inside. When a user wears the AR / VR glasses of the present invention and a tactile signal is generated, the driving unit 41 can drive the tactile material 43 to vibrate, and the tactile material 43 can generate a thrust and transmit it to the skin, which can realize a reminder by vibration on the person's head, or can also be reminded by voice, so as to meet various needs.

[0060] It should be noted that the above is merely an embodiment of the present invention, and those skilled in the art may make modifications without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention.

Claims

1. A multi-function feedback device, comprising: a frame; a magnetic circuit system fixed in the frame; and a vibration system connected to the frame and driven by the magnetic circuit system to generate sound along a thickness direction, the multi-function feedback device further includes a tactile system disposed opposite the vibration system; a first elastic member connected to the driving unit and fixed to the frame; and a tactile material affixed to a side of the first elastic member facing away from the driving unit.

2. 2. The multifunction feedback device of claim 1, wherein the magnetic circuit system includes a first magnetic yoke fixedly connected to the frame, a magnetic steel fixed within the first magnetic yoke, and a pole plate fixed to a side of the magnetic steel adjacent to the vibration system, the first magnetic yoke having an accommodation cavity, and the driving unit being accommodated within the accommodation cavity.

3. 3. The multi-function feedback device according to claim 2, wherein the driving unit includes an iron core fixedly mounted on the side of the first elastic member facing away from the tactile material, and a coil fitted around the iron core, and both the iron core and the coil are housed within the housing cavity.

4. 4. The multi-function feedback device of claim 3, 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.

5. 5. The multi-function feedback device according to claim 4, wherein the magnetic steel has a recess communicating with the receiving cavity, and the pole plate ring is fitted in the recess.

6. 4. The multi-function feedback device according to claim 3, wherein the driving unit further includes a second magnetic yoke fixed to the first elastic member and covering the outside of the iron core and the coil.

7. 4. The multifunction feedback device of claim 3, wherein the first elastic member includes a sealing film, the sealing film is fixed to a side of the first magnetic yoke that faces away from the vibration system, and the sealing film is affixed to the iron core and the coil, respectively.

8. 8. The multi-function feedback device according to claim 7, wherein the tactile material includes an outer pressing block, the outer pressing block being disposed on a side of the sealing film that faces away from the iron core and the coil.

9. 9. The multi-function feedback device according to claim 8, wherein the magnetic circuit system further includes a connecting member, the connecting member being fixed between the pole plate and the first magnetic yoke.

10. 3. The multi-function feedback device of claim 2, wherein 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.

11. 11. The multi-function feedback device according to claim 10, further comprising two first flexible circuit boards symmetrically installed at both ends of the magnetic circuit system, one end of the first flexible circuit board being fixed to the frame and the other end being fixedly connected to the side of the voice coil away from the dome.

12. The multi-function feedback device according to claim 1 , further comprising a second elastic member disposed between the magnetic circuit system and the driving part.

13. 1. A haptic feedback system comprising: a control processing assembly; a power amplifier circuit electrically connected to the control processing assembly; and a multi-function feedback device according to any one of claims 1 to 12, electrically connected to the power amplifier circuit; the control and processing assembly is used for receiving and processing the AR / VR signals and outputting audio and haptic signals to the power amplifier circuit; the power amplifier circuit is used to perform power amplification processing on the audio signal and the haptic signal; 11. A haptic feedback system, comprising: a vibration system adapted to receive an audio signal after power amplification; and a haptic system adapted to receive an amplified haptic signal.

14. the control processing assembly includes an MCU controller, a first chip processor and a second chip processor whose signals are connected to the MCU controller, the power amplifier circuit includes an audio power amplifier circuit electrically connected to the first chip processor and the vibration system, and a motor power amplifier circuit electrically connected to the second chip processor and the haptic system; the MCU controller is used to receive and process an AR / VR signal 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, and the second chip processor is used to receive and process the first signal to obtain the haptic signal; 14. The haptic feedback system of claim 13, wherein the audio power amplifier circuit is used to perform power amplification processing on the audio signal, and the motor power amplifier circuit is used to perform power amplification processing on the haptic signal.

15. the vibration system and the haptic system are connected in series, the haptic feedback system further includes a capacitor connected in parallel with the haptic system, the control processing assembly includes an MCU controller and a signal processing assembly whose signals are connected to the MCU controller, the power amplifier circuit includes an audio power amplifier circuit electrically connected to the signal processing assembly and the vibration system, and the vibration system is electrically connected to the audio power amplifier circuit; the MCU controller is used to receive and process the AR / VR signal 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 including an audio signal corresponding to the first signal and a tactile signal corresponding to the second signal; The haptic feedback system of claim 13, wherein the audio power amplifier 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.

16. 14. The haptic feedback system of claim 13, wherein processing the AR / VR signal and outputting an audio signal and a haptic signal to the power amplifier circuit includes invoking a haptic feedback signal effect library based on the AR / VR signal to obtain the haptic signal, the haptic signal being less than 80 Hertz.

17. AR / VR glasses comprising a lens frame and the haptic feedback system according to claim 13 installed in the lens frame.

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