Vibration apparatus, driving circuit and electronic device

Abstract

Disclosed in the present invention are a vibration apparatus, a driving circuit and an electronic device. The vibration apparatus comprises a first pair of linear resonant actuators, a second pair of linear resonant actuators and a third pair of linear resonant actuators, wherein the center point of the first pair of linear resonant actuators, the center point of the second pair of linear resonant actuators and the center point of the third pair of linear resonant actuators coincide, the vibration directions of the first pair of linear resonant actuators are parallel to a first direction, the vibration directions of the second pair of linear resonant actuators are parallel to a second direction, the vibration directions corresponding to the third pair of linear resonant actuators are parallel to a third direction, and the first direction, the second direction and the third direction are perpendicular in pairs.

Description

Vibration device, drive circuit and electronic equipment Technical Field

[0001] The present invention relates to the technical field of vibration devices, and more particularly, to a vibration device, a driving circuit, and an electronic device. Background Art

[0002] Linear Resonant Actuator (LRA) has been widely used in various vibration applications in consumer electronics, especially gaming and AR / VR products, due to its advantages such as strong, rich, crisp vibration and low energy consumption.

[0003] The richness of vibration in a single direction and a single frequency is limited and can no longer meet the vibration needs of current consumer products.

[0004] Summary of the Invention

[0005] One purpose of the embodiments of the present invention is to provide a new technical solution that can provide rich vibration sensations.

[0006] According to a first aspect of the present invention, a vibration device is provided, comprising a first pair of linear motors, a second pair of linear motors, and a third pair of linear motors, wherein center points of the first pair of linear motors, the second pair of linear motors, and the third pair of linear motors coincide with each other, vibration directions of the first pair of linear motors are parallel to a first direction, vibration directions of the second pair of linear motors are parallel to a second direction, and corresponding vibration directions of the third pair of linear motors are parallel to a third direction, and the first direction, the second direction, and the third direction are perpendicular to each other.

[0007] According to a second aspect of the present disclosure, a drive circuit for a vibration device is provided. The vibration device includes a first pair of linear motors, a second pair of linear motors, and a third pair of linear motors. Center points of the first pair of linear motors, the second pair of linear motors, and the third pair of linear motors coincide with each other. Vibration directions of the first pair of linear motors are parallel to a first direction, vibration directions of the second pair of linear motors are parallel to a second direction, and vibration directions of the third pair of linear motors are parallel to a third direction. The first direction, the second direction, and the third direction are perpendicular to each other.

[0008] The driving circuit is configured to drive any pair of linear motors in phase to cause the vibration device to move translationally along the corresponding vibration direction; or to drive any pair of linear motors in anti-phase to cause the vibration device to rotate around the corresponding axis;

[0009] The axis passes through a midpoint of a line segment connecting any pair of linear motors, is perpendicular to the line segment connecting any pair of linear motors, and is perpendicular to a vibration direction of any pair of linear motors.

[0010] Optionally, the driving circuit includes a first signal output module, an in-phase output module and an inverted output module corresponding to each linear motor, and a first control module corresponding to each pair of linear motors.

[0011] The first signal output module is used to output a first driving signal;

[0012] The first control module is used to control the corresponding in-phase output module to work when the corresponding pair of linear motors are driven in the same phase; and to control the corresponding in-phase output module to work when the corresponding pair of linear motors are driven in the opposite phase;

[0013] The in-phase output module is used to output the first driving signal to the corresponding linear motor;

[0014] The inverting output module is used to perform inverting processing on the first driving signal to obtain a second driving signal, and output the second driving signal to the corresponding linear motor.

[0015] Optionally, the in-phase output module includes a first switch and a second switch, wherein the first switch is connected between a first end of the first signal output module and a first end of the corresponding linear motor, and the second switch is connected between a second end of the first signal output module and a second end of the corresponding linear motor;

[0016] When the first control module controls the in-phase output module to operate, both the first switch and the second switch are turned on.

[0017] Optionally, the inverting output module includes a third switch and a fourth switch, the third switch is connected between the first end of the first signal output module and the second end of the corresponding linear motor, and the fourth switch is connected between the second end of the first signal output module and the first end of the corresponding linear motor;

[0018] When the first control module controls the inverting output module to operate, the third switch and the fourth switch are both controlled to be turned on.

[0019] Optionally, the driving circuit includes a second signal output module, a third signal output module, a second control module, and a gating module corresponding to each linear motor.

[0020] The second signal output module is used to output a third driving signal;

[0021] The third signal output module is used to output a fourth driving signal, wherein the phases of the third driving signal and the fourth driving signal are opposite;

[0022] The second control module is used to control the state of the gating module;

[0023] The gating module is configured to transmit the third driving signal to the corresponding linear motor in a first state, and to transmit the fourth driving signal to the corresponding linear motor in a second state.

[0024] Optionally, the selection module includes a fifth switch and a sixth switch, the fifth switch is connected between the first end of the second signal output module and the first end of the corresponding linear motor, the sixth switch is connected between the first end of the third signal output module and the first end of the corresponding linear motor, and the second end of the second signal output module and the second end of the third signal output module are both connected to the second end of the corresponding linear motor.

[0025] Optionally, the driving circuit includes a DC power supply and an H-bridge driving circuit corresponding to each linear motor, wherein the H-bridge driving circuit is connected between the DC power supply and the corresponding linear motor;

[0026] When any pair of linear motors are driven in phase, the H-bridge drive circuits corresponding to the pair of linear motors output drive signals with the same phase;

[0027] When any pair of linear motors are driven in anti-phase, the H-bridge driving circuits corresponding to the pair of linear motors output driving signals with opposite phases.

[0028] Optionally, the H-bridge drive circuit includes a third control module and an H-bridge circuit, the H-bridge circuit includes a seventh switch, an eighth switch, a ninth switch and a tenth switch, the control end of the seventh switch, the control end of the eighth switch, the control end of the ninth switch and the control end of the tenth switch are all connected to the third control module, the seventh switch is connected between the positive pole of the DC power supply and the first end of the corresponding linear motor, the eighth switch is connected between the first end of the corresponding linear motor and the negative pole of the DC power supply, the ninth switch is connected between the positive pole of the DC power supply and the second end of the corresponding linear motor, and the tenth switch is connected between the second end of the corresponding linear motor and the negative pole of the DC power supply.

[0029] According to a third aspect of the present disclosure, an electronic device is provided, comprising the driving circuit according to the second aspect of the present disclosure.

[0030] In the embodiments of the present disclosure, three pairs of linear motors with mutually perpendicular vibration directions can be used to provide directional tactile sensations of translational movement in any direction within three-dimensional space, as well as directional tactile sensations of rotation around any direction within three-dimensional space, providing a tactile experience that is completely different from existing vibrations.

[0031] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0033] FIG1 is a schematic diagram of a vibration device provided according to an embodiment of the present disclosure;

[0034] FIG2 is a schematic diagram of a directional acceleration waveform of a linear motor provided according to an embodiment of the present disclosure;

[0035] FIG3 is a block diagram of a driving circuit provided according to an embodiment of the present disclosure;

[0036] FIG4 is a circuit diagram of a driving circuit provided according to an embodiment of the present disclosure;

[0037] FIG5 is a block diagram of a driving circuit provided according to an embodiment of the present disclosure;

[0038] FIG6 is a circuit diagram of a driving circuit provided according to an embodiment of the present disclosure;

[0039] FIG7 is a circuit diagram of a driving circuit provided according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0040] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0041] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0042] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0043] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0044] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0045] <Vibration Device>

[0046] FIG1 is a schematic diagram of a vibration device provided according to an embodiment of the present disclosure.

[0047] As shown in Figure 1, the vibration device 100 may include a first pair of linear motors, a second pair of linear motors and a third pair of linear motors, wherein the first pair of linear motors may include a first linear motor LRA1 and a second linear motor LRA2, the second pair of linear motors may include a third linear motor LRA3 and a fourth linear motor LRA4, and the third pair of linear motors may include a fifth linear motor LRA5 and a sixth linear motor LRA6.

[0048] The center points of the first pair of linear motors, the second pair of linear motors, and the third pair of linear motors coincide. Specifically, the center point of the first pair of linear motors may be the midpoint of a first line segment connecting the first linear motor LRA1 and the second linear motor LRA2, the center point of the second pair of linear motors may be the midpoint of a second line segment connecting the third linear motor LRA3 and the fourth linear motor LRA4, and the center point of the third pair of linear motors may be the midpoint of a third line segment connecting the fifth linear motor LRA5 and the sixth linear motor LRA6.

[0049] Furthermore, the first distance between the first pair of linear motors, the second distance between the second pair of linear motors, and the third distance between the third pair of linear motors may be equal or different, which is not limited here.

[0050] In one example, the first distance between the first pair of linear motors, the second distance between the second pair of linear motors, and the third distance between the third pair of linear motors, that is, the first pair of linear motors, the second pair of linear motors, and the third pair of linear motors are evenly distributed around the center point to form a sphere.

[0051] In this embodiment, the vibration directions of the first pair of linear motors are parallel to the first direction, the vibration directions of the second pair of linear motors are parallel to the second direction, and the corresponding vibration directions of the third pair of linear motors are parallel to the third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0052] Furthermore, the vibration direction of any pair of linear motors is perpendicular to the line segment connecting the pair of linear motors. Specifically, the first direction is perpendicular to the first line segment, the second direction is perpendicular to the second line segment, and the third direction is perpendicular to the third line segment.

[0053] In the vibration device 100 shown in FIG1 , the x-axis, y-axis, and z-axis may be perpendicular to each other, wherein the first direction is parallel to the y-axis direction, the second direction is parallel to the z-axis direction, and the third direction is parallel to the x-axis direction.

[0054] A linear motor achieves vibrotactile sensation through the periodic reciprocating motion of its internal vibrator. When the linear motor outputs a directional acceleration waveform with asymmetric amplitudes in the positive and negative directions, as shown in Figure 2, the forces perceived by the human hand differ in magnitude. The combined forces in these two directions create a single-direction tactile sensation, or directional tactile sensation, known as the first direction, where the greater force is located. The horizontal axis of Figure 2 represents time, and the vertical axis represents acceleration.

[0055] Furthermore, the acceleration waveform shown in FIG. 2 may be used as a target, and the voltage waveform required to realize the acceleration waveform may be calculated according to the specific model parameters of the linear motor, that is, the directional drive waveform designed for the linear motor.

[0056] The first linear motor LRA1 and the second linear motor LRA2 are driven in phase, that is, driven by directional drive waveforms with the same phase, so that the two linear motors produce the same directional tactile sensation, achieving superposition of directional tactile sensations, so that the vibration device can achieve directional tactile sensations of translation along the first direction. The first linear motor LRA1 and the second linear motor LRA2 are driven in anti-phase, that is, driven by directional drive waveforms with opposite phases, so that the two linear motors produce opposite directional tactile sensations, so that the vibration device can achieve directional tactile sensations of rotation about a first axis. The first axis passes through the midpoint of the first line segment, is perpendicular to the first line segment, and is perpendicular to the first direction.

[0057] The third linear motor LRA3 and the fourth linear motor LRA4 are driven in phase, that is, driven by directional drive waveforms with the same phase, so that the two linear motors produce the same directional tactile sensation, achieving superposition of directional tactile sensations, so that the vibration device can achieve directional tactile sensations of translation along the second direction. The third linear motor LRA3 and the fourth linear motor LRA4 are driven in anti-phase, that is, driven by directional drive waveforms with opposite phases, so that the two linear motors produce opposite directional tactile sensations, so that the vibration device can achieve directional tactile sensations of rotation about a second axis. The second axis passes through the midpoint of the second line segment, is perpendicular to the second line segment, and is perpendicular to the second direction.

[0058] The fifth linear motor LRA5 and the sixth linear motor LRA6 are driven in phase, that is, driven by directional drive waveforms with the same phase, so that the two linear motors produce the same directional tactile sensation, achieving superposition of directional tactile sensations, so that the vibration device can achieve directional tactile sensations of translation along the third direction. The fifth linear motor LRA5 and the sixth linear motor LRA6 are driven in anti-phase, that is, driven by directional drive waveforms with opposite phases, so that the two linear motors produce opposite directional tactile sensations, so that the vibration device can achieve directional tactile sensations of rotation about a third axis. The third axis passes through the midpoint of the third line segment, is perpendicular to the third line segment, and is perpendicular to the third direction.

[0059] In this embodiment, by using three pairs of linear motors with mutually perpendicular vibration directions, the vibration device can provide directional tactile sensations of translation in any direction within three-dimensional space, as well as directional tactile sensations of rotation around any direction within three-dimensional space, providing a tactile experience that is completely different from existing vibrations.

[0060] When the vibration device is applied to electronic devices such as gaming devices, virtual reality devices, or augmented reality devices, these directional tactile sensations can be used to simulate scenes such as movement, turning, and unidirectional force in the electronic devices, enriching the tactile experience of the electronic devices.

[0061] <Drive Circuit>

[0062] The present disclosure also provides a driving circuit for a vibration device. The vibration device includes a first pair of linear motors, a second pair of linear motors, and a third pair of linear motors. The center points of the first pair of linear motors, the second pair of linear motors, and the third pair of linear motors coincide with each other. The vibration directions of the first pair of linear motors are all parallel to a first direction, the vibration directions of the second pair of linear motors are all parallel to a second direction, and the vibration directions of the third pair of linear motors are all parallel to a third direction. The first, second, and third directions are all perpendicular to each other.

[0063] The drive circuit is configured to drive either pair of linear motors in phase to cause the vibration device to translate along the corresponding vibration direction; or to drive either pair of linear motors in phase opposition to cause the vibration device to rotate about the corresponding axis. The axis passes through the midpoint of a line segment connecting the pair of linear motors, is perpendicular to the line segment connecting the pair of linear motors, and is perpendicular to the vibration direction of the pair of linear motors.

[0064] The first linear motor LRA1 and the second linear motor LRA2 are driven in phase, that is, driven by directional drive waveforms with the same phase, so that the two linear motors produce the same directional tactile sensation, achieving superposition of directional tactile sensations, allowing the vibration device to achieve directional tactile sensations of translation along the first direction. The first linear motor LRA1 and the second linear motor LRA2 are driven in phase, that is, driven by directional drive waveforms with opposite phases, so that the two linear motors produce opposite directional tactile sensations, allowing the vibration device to achieve directional tactile sensations of rotation about a first axis. The first axis passes through the midpoint of the first line segment, is perpendicular to the first line segment, and is perpendicular to the first direction.

[0065] The third linear motor LRA3 and the fourth linear motor LRA4 are driven in phase, that is, driven by directional drive waveforms with the same phase, so that the two linear motors produce the same directional tactile sensation, achieving superposition of directional tactile sensations, so that the vibration device can achieve directional tactile sensations of translation along the second direction. The third linear motor LRA3 and the fourth linear motor LRA4 are driven in anti-phase, that is, driven by directional drive waveforms with opposite phases, so that the two linear motors produce opposite directional tactile sensations, so that the vibration device can achieve directional tactile sensations of rotation about a second axis. The second axis passes through the midpoint of the second line segment, is perpendicular to the second line segment, and is perpendicular to the second direction.

[0066] The fifth linear motor LRA5 and the sixth linear motor LRA6 are driven in phase, that is, driven by directional drive waveforms with the same phase, so that the two linear motors produce the same directional tactile sensation, achieving superposition of directional tactile sensations, so that the vibration device can achieve directional tactile sensations of translation along the third direction. The fifth linear motor LRA5 and the sixth linear motor LRA6 are driven in anti-phase, that is, driven by directional drive waveforms with opposite phases, so that the two linear motors produce opposite directional tactile sensations, so that the vibration device can achieve directional tactile sensations of rotation about a third axis. The third axis passes through the midpoint of the third line segment, is perpendicular to the third line segment, and is perpendicular to the third direction.

[0067] In this embodiment, by using three pairs of linear motors with mutually perpendicular vibration directions, the vibration device can provide directional tactile sensations of translation in any direction within three-dimensional space, as well as directional tactile sensations of rotation around any direction within three-dimensional space, providing a tactile experience that is completely different from existing vibrations.

[0068] In one embodiment of the present disclosure, as shown in FIG3 , the driving circuit 3000 may include a first signal output module 3100 , a first control module 3200 corresponding one-to-one to each pair of linear motors, and a same-phase output module 3300 and an anti-phase output module 3400 corresponding one-to-one to each linear motor.

[0069] The first signal output module 3100 is configured to output a first driving signal.

[0070] The first control module 3200 is used to control the corresponding in-phase output module 3300 to operate when the corresponding pair of linear motors are driven in the same phase; and to control the corresponding in-phase output module 3400 to operate when the corresponding pair of linear motors are driven in the opposite phase.

[0071] The in-phase output module 3300 is used to output the first driving signal to the corresponding linear motor.

[0072] The inverting output module 3400 is used to perform inverting processing on the first driving signal to obtain a second driving signal and output the second driving signal to the corresponding linear motor.

[0073] In this embodiment, the first driving signal and the second driving signal are both directional driving waveforms.

[0074] The first control module 3200 may control the operation of at most one of the corresponding in-phase output module 3300 and the inverting output module 3400. Specifically, the first control module 3200 may control the corresponding in-phase output module 3300 to operate and the corresponding inverting output module 3400 to not operate. The first control module 3200 may also control the corresponding in-phase output module 3300 to not operate and the corresponding inverting output module 3400 to operate. The first control module 3200 may also control both the corresponding in-phase output module 3300 and the inverting output module 3400 to not operate.

[0075] When the first control module corresponding to the first pair of linear motors controls the in-phase output module corresponding to the first linear motor LRA1 and the in-phase output module corresponding to the second linear motor LRA2 to operate, the driving circuit 3000 simultaneously drives the first linear motor LRA1 and the second linear motor LRA2 through the first driving signal, that is, drives the first linear motor LRA1 and the second linear motor LRA2 in phase, which can make the first linear motor LRA1 and the second linear motor LRA2 produce the same directional tactile sensation, realize the superposition of directional tactile sensations, and enable the vibration device to achieve directional tactile sensation of translation along the first direction. When the first control module corresponding to the first pair of linear motors controls the same-phase output module corresponding to the first linear motor LRA1 and the opposite-phase output module corresponding to the second linear motor LRA2 to operate, the driving circuit 3000 drives the first linear motor LRA1 through the first driving signal and drives the second linear motor LRA2 through the second driving signal, that is, driving the first linear motor LRA1 and the second linear motor LRA2 in opposite phases, so that the first linear motor LRA1 and the second linear motor LRA2 can produce opposite directional tactile sensations, so that the vibration device can achieve a directional tactile sensation of rotation around the first axis.

[0076] When the first control module corresponding to the second pair of linear motors controls the in-phase output module corresponding to the third linear motor LRA3 and the in-phase output module corresponding to the fourth linear motor LRA4 to operate, the driving circuit 3000 simultaneously drives the third linear motor LRA3 and the fourth linear motor LRA4 through the first driving signal, that is, the third linear motor LRA3 and the fourth linear motor LRA4 are driven in phase, which can make the third linear motor LRA3 and the fourth linear motor LRA4 produce the same directional tactile sensation, realize the superposition of directional tactile sensations, and enable the vibration device to achieve directional tactile sensation of translation along the second direction. When the first control module corresponding to the second pair of linear motors controls the same-phase output module corresponding to the third linear motor LRA3 and the opposite-phase output module corresponding to the fourth linear motor LRA4 to operate, the driving circuit 3000 drives the third linear motor LRA3 through the first driving signal and drives the fourth linear motor LRA4 through the second driving signal, that is, the third linear motor LRA3 and the fourth linear motor LRA4 are driven in opposite phases, so that the third linear motor LRA3 and the fourth linear motor LRA4 produce opposite directional tactile sensations, so that the vibration device can achieve a directional tactile sensation of rotation around the second axis.

[0077] When the first control module corresponding to the third pair of linear motors controls the in-phase output module corresponding to the fifth linear motor LRA5 and the in-phase output module corresponding to the sixth linear motor LRA6 to operate, the driving circuit 3000 simultaneously drives the fifth linear motor LRA5 and the sixth linear motor LRA6 through the first driving signal, that is, the fifth linear motor LRA5 and the sixth linear motor LRA6 are driven in phase, which can make the fifth linear motor LRA5 and the sixth linear motor LRA6 produce the same directional tactile sensation, realize the superposition of directional tactile sensation, and enable the vibration device to achieve directional tactile sensation of translation along the third direction. When the first control module corresponding to the third pair of linear motors controls the same-phase output module corresponding to the fifth linear motor LRA5 and the opposite-phase output module corresponding to the sixth linear motor LRA6, the driving circuit 3000 drives the fifth linear motor LRA5 through the first driving signal and drives the sixth linear motor LRA6 through the second driving signal, that is, driving the fifth linear motor LRA5 and the sixth linear motor LRA6 in opposite phases, so that the fifth linear motor LRA5 and the sixth linear motor LRA6 produce opposite directional tactile sensations, so that the vibration device can achieve directional tactile sensations rotating around the third axis.

[0078] Furthermore, as shown in FIG4 , the in-phase output module 3300 includes a first switch S1 and a second switch S2. The first switch S1 is connected between the first terminal of the first signal output module 3100 and the first terminal of the corresponding linear motor, and the second switch S2 is connected between the second terminal of the first signal output module 3100 and the second terminal of the corresponding linear motor. The control terminals of the first and second switches S1 and S2 are both connected to the corresponding first control module 3200.

[0079] When the first control module 3200 controls the in-phase output module 3300 to operate, the first switch S1 and the second switch S2 are both turned on. When the first control module 3200 controls the in-phase output module 3300 to not operate, the first switch S1 and the second switch S2 are both turned off.

[0080] In this embodiment, the first switch S1 and the second switch S2 may both be provided by transistors, specifically triodes or field effect transistors.

[0081] Furthermore, as shown in Figure 4, the inverting output module 3400 includes a third switch S3 and a fourth switch S4, the third switch S3 is connected between the first end of the first signal output module 3100 and the second end of the corresponding linear motor, and the fourth switch S4 is connected between the second end of the first signal output module 3100 and the first end of the corresponding linear motor.

[0082] When the first control module 3200 controls the inverting output module 3400 to operate, the third switch S3 and the fourth switch S4 are both turned on. When the first control module 3200 controls the inverting output module 3400 to not operate, the third switch S3 and the fourth switch S4 are both turned off.

[0083] In this embodiment, the third switch S3 and the fourth switch S4 may both be provided by transistors, specifically triodes or field effect transistors.

[0084] In this embodiment, when driving the pair of linear motors in phase, the first switch S1 and the second switch S2 may be turned on, while the third switch S3 and the fourth switch S4 may be turned off, so that the pair of linear motors are connected in phase and in parallel between the first terminal and the second terminal of the first signal output module 3100. When driving the pair of linear motors in anti-phase, the first switch S1 and the second switch S2 may be turned off, while the third switch S3 and the fourth switch S4 may be turned on, so that the pair of linear motors are connected in anti-phase and in parallel between the first terminal and the second terminal of the first signal output module 3100.

[0085] By driving the vibration device through the driving circuit of this embodiment, the first linear motor and the second linear motor can share the first signal output module, thereby reducing the hardware cost of the driving circuit.

[0086] In another embodiment of the present disclosure, as shown in FIG5 , a driving circuit 5000 includes a second signal output module 5100 , a third signal output module 5200 , a second control module 5300 , and a gating module 5400 corresponding to each linear motor.

[0087] The second signal output module 5100 is configured to output a third driving signal.

[0088] The third signal output module 5200 is configured to output a fourth driving signal, wherein the third driving signal and the fourth driving signal have opposite phases.

[0089] The second control module 5500 is used to control the state of the gating module 5400 .

[0090] The gating module 5400 is configured to transmit the third driving signal to the corresponding linear motor in the first state, and to transmit the fourth driving signal to the corresponding linear motor in the second state.

[0091] When the second control module controls the gating module 5400 corresponding to the first linear motor LRA1 to be in the first state and the gating module 5400 corresponding to the second linear motor LRA2 to be in the first state, the driving circuit 3000 simultaneously drives the first linear motor LRA1 and the second linear motor LRA2 through the third driving signal, that is, drives the first linear motor LRA1 and the second linear motor LRA2 in phase, so that the first linear motor LRA1 and the second linear motor LRA2 can produce the same directional tactile sensation, realize the superposition of directional tactile sensations, and enable the vibration device to achieve directional tactile sensation of translation along the first direction. When the second control module controls the gating module 5400 corresponding to the first linear motor LRA1 to be in the first state and the gating module 5400 corresponding to the second linear motor LRA2 to be in the second state, the driving circuit 3000 drives the first linear motor LRA1 through the third driving signal and drives the second linear motor LRA2 through the fourth driving signal, that is, the first linear motor LRA1 and the second linear motor LRA2 are driven in opposite phases, so that the first linear motor LRA1 and the second linear motor LRA2 can produce opposite directional tactile sensations, so that the vibration device can achieve a directional tactile sensation of rotation around the first axis.

[0092] When the second control module controls the gating module 5400 corresponding to the third linear motor LRA3 to be in the first state and the gating module 5400 corresponding to the fourth linear motor LRA4 to be in the first state, the driving circuit 3000 simultaneously drives the third linear motor LRA3 and the fourth linear motor LRA4 through the third driving signal, that is, drives the third linear motor LRA3 and the fourth linear motor LRA4 in phase, so that the third linear motor LRA3 and the fourth linear motor LRA4 can produce the same directional tactile sensation, realize the superposition of directional tactile sensations, and enable the vibration device to achieve directional tactile sensation of translation along the second direction. When the second control module controls the gating module 5400 corresponding to the third linear motor LRA3 to be in the first state and the gating module 5400 corresponding to the fourth linear motor LRA4 to be in the second state, the driving circuit 3000 drives the third linear motor LRA3 through the third driving signal and drives the fourth linear motor LRA4 through the fourth driving signal, that is, the third linear motor LRA3 and the fourth linear motor LRA4 are driven in opposite phases, so that the third linear motor LRA3 and the fourth linear motor LRA4 can generate opposite directional tactile sensations, so that the vibration device can achieve a directional tactile sensation of rotation around the second axis.

[0093] When the second control module controls the selection module 5400 corresponding to the fifth linear motor LRA5 to be in the first state and the selection module 5400 corresponding to the sixth linear motor LRA6 to be in the first state, the driving circuit 3000 simultaneously drives the fifth linear motor LRA5 and the sixth linear motor LRA6 through the third driving signal, that is, drives the fifth linear motor LRA5 and the sixth linear motor LRA6 in phase, which can make the fifth linear motor LRA5 and the sixth linear motor LRA6 produce the same directional tactile sensation, realize the superposition of directional tactile sensation, and enable the vibration device to achieve directional tactile sensation along the third direction. When the second control module controls the gating module 5400 corresponding to the fifth linear motor LRA5 to be in the first state and the gating module 5400 corresponding to the sixth linear motor LRA6 to be in the second state, the driving circuit 3000 drives the fifth linear motor LRA5 through the third driving signal and drives the sixth linear motor LRA6 through the fourth driving signal, that is, the fifth linear motor LRA5 and the sixth linear motor LRA6 are driven in opposite phases, so that the fifth linear motor LRA5 and the sixth linear motor LRA6 can produce opposite directional tactile sensations, so that the vibration device can achieve a directional tactile sensation of rotation around the third axis.

[0094] Specifically, as shown in Figure 6, the selection module 5300 includes a fifth switch S5 and a sixth switch S6. The fifth switch S5 is connected between the first end of the second signal output module 5100 and the first end of the corresponding linear motor. The sixth switch S6 is connected between the first end of the third signal output module 5200 and the first end of the corresponding linear motor. The second end of the second signal output module 5100 and the second end of the third signal output module 5200 are both connected to the second end of the corresponding linear motor.

[0095] In this embodiment, when driving a pair of linear motors in phase, the fifth switches S5 corresponding to the pair of linear motors may be turned on, while the sixth switches S6 corresponding to the pair of linear motors may be turned off, thereby connecting the pair of linear motors in phase and in parallel between the first and second terminals of the second signal output module 5100. When driving the pair of linear motors in opposite phases, the fifth switch S5 corresponding to one of the linear motors may be turned on, while the sixth switch S6 corresponding to the other of the linear motors may be turned on, thereby connecting one of the linear motors between the first and second terminals of the second signal output module 5100 and the other between the first and second terminals of the third signal output module 5200.

[0096] By driving the vibration device through the driving circuit of this embodiment, the control logic of the driving circuit can be made simple and clear, easy to implement, and the number of switches can be reduced.

[0097] In another embodiment of the present disclosure, the driving circuit may further include a direct current power supply DC and an H-bridge driving circuit corresponding to each linear motor, wherein the H-bridge driving circuit is connected between the direct current power supply and the corresponding linear motor.

[0098] When driving a pair of linear motors in phase, the H-bridge drive circuits corresponding to the pair of linear motors output drive signals with the same phase. When driving a pair of linear motors in phase, the H-bridge drive circuits corresponding to the pair of linear motors output drive signals with opposite phases.

[0099] As shown in Figure 7, the H-bridge driving circuit may include a third control module 1211 and an H-bridge circuit, wherein the H-bridge circuit includes a seventh switch S7, an eighth switch S3, a ninth switch S5 and a tenth switch S10, and the control ends of the seventh switch S7, the eighth switch S3, the ninth switch S5 and the tenth switch S10 are all connected to the third control module 1211, the seventh switch S7 is connected between the positive pole of the DC power supply DC and the first end of the corresponding linear motor, the eighth switch S3 is connected between the first end of the corresponding linear motor and the negative pole of the DC power supply DC, the ninth switch S5 is connected between the positive pole of the DC power supply DC and the second end of the corresponding linear motor, and the tenth switch S10 is connected between the second end of the corresponding linear motor and the negative pole of the DC power supply DC.

[0100] In this embodiment, the third control module 1211 performs PWM drive control on the seventh switch S7, the eighth switch S3, the ninth switch S5 and the tenth switch S10 in the H-bridge circuit, so that the H-bridge circuit can output the first drive signal or the second drive signal, so that the vibration device can achieve corresponding directional tactile sensation.

[0101] In this embodiment, the H-bridge circuit corresponding to each linear motor can be independently controlled. The drive circuit only requires a DC power supply, the hardware cost is low, and the control logic of the drive circuit is simple and clear, which is easy to implement.

[0102] <Electronic equipment>

[0103] The present disclosure further provides an electronic device, which may include the vibration device described in any of the aforementioned embodiments and the driving circuit described in any of the aforementioned embodiments.

[0104] While various embodiments of the present invention have been described above, the foregoing description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or technical improvements to existing technologies, or to enable others skilled in the art to understand the embodiments disclosed herein. The scope of the present invention is defined by the appended claims.

Claims

1. A vibration device, characterized in that: The vibration device includes a first pair of linear motors, a second pair of linear motors and a third pair of linear motors. The center points of the first pair of linear motors, the second pair of linear motors and the third pair of linear motors coincide with each other. The vibration directions of the first pair of linear motors are parallel to the first direction, the vibration directions of the second pair of linear motors are parallel to the second direction, the vibration directions corresponding to the third pair of linear motors are parallel to the third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

2. A driving circuit for a vibration device, characterized in that: The vibration device comprises a first pair of linear motors, a second pair of linear motors and a third pair of linear motors, the center points of the first pair of linear motors, the center points of the second pair of linear motors and the center points of the third pair of linear motors coincide with each other, the vibration directions of the first pair of linear motors are parallel to the first direction, the vibration directions of the second pair of linear motors are parallel to the second direction, the vibration directions corresponding to the third pair of linear motors are parallel to the third direction, and the first direction, the second direction and the third direction are perpendicular to each other; The driving circuit is configured to drive any pair of linear motors in phase so that the vibration device moves in a corresponding vibration direction; or to drive any pair of linear motors in reverse phase so that the vibration device rotates around a corresponding axis; The axis passes through the midpoint of a line segment connecting any pair of linear motors, is perpendicular to the line segment connecting any pair of linear motors, and is perpendicular to a vibration direction of any pair of linear motors.

3. The driving circuit according to claim 2, characterized in that: The driving circuit includes a first signal output module, an in-phase output module and an inverted output module corresponding to each linear motor, and a first control module corresponding to each pair of linear motors. The first signal output module is used to output a first driving signal; The first control module is used to control the corresponding in-phase output module to work when the corresponding pair of linear motors are driven in the same phase; and to control the corresponding in-phase output module to work when the corresponding pair of linear motors are driven in the opposite phase; The in-phase output module is used to output the first driving signal to the corresponding linear motor; The inverting output module is used to perform inverting processing on the first driving signal to obtain a second driving signal, and output the second driving signal to the corresponding linear motor.

4. The driving circuit according to claim 3, characterized in that: The in-phase output module includes a first switch and a second switch, wherein the first switch is connected between a first end of the first signal output module and a first end of a corresponding linear motor, and the second switch is connected between a second end of the first signal output module and a second end of the corresponding linear motor; When the first control module controls the in-phase output module to work, both the first switch and the second switch are turned on.

5. The driving circuit according to claim 3, characterized in that: The inverting output module includes a third switch and a fourth switch, wherein the third switch is connected between the first end of the first signal output module and the second end of the corresponding linear motor, and the fourth switch is connected between the second end of the first signal output module and the first end of the corresponding linear motor; When the first control module controls the inverting output module to work, the third switch and the fourth switch are controlled to be turned on.

6. The driving circuit according to claim 2, characterized in that: The driving circuit includes a second signal output module, a third signal output module, a second control module and a gating module corresponding to each linear motor. The second signal output module is used to output a third driving signal; The third signal output module is used to output a fourth driving signal, wherein the third driving signal and the fourth driving signal have opposite phases; The second control module is used to control the state of the gating module; The gating module is used to transmit the third driving signal to the corresponding linear motor in a first state, and to transmit the fourth driving signal to the corresponding linear motor in a second state.

7. The driving circuit according to claim 6, characterized in that: The selection module includes a fifth switch and a sixth switch, the fifth switch is connected between the first end of the second signal output module and the first end of the corresponding linear motor, the sixth switch is connected between the first end of the third signal output module and the first end of the corresponding linear motor, and the second end of the second signal output module and the second end of the third signal output module are both connected to the second end of the corresponding linear motor.

8. The driving circuit according to claim 2, characterized in that: The driving circuit includes a DC power supply and an H-bridge driving circuit corresponding to each linear motor, wherein the H-bridge driving circuit is connected between the DC power supply and the corresponding linear motor; When any pair of linear motors are driven in phase, the H-bridge driving circuits corresponding to the pair of linear motors output driving signals with the same phase; When any pair of linear motors are driven in anti-phase, the H-bridge driving circuits corresponding to the pair of linear motors output driving signals with opposite phases.

9. The driving circuit according to claim 8, characterized in that: The H-bridge driving circuit includes a third control module and an H-bridge circuit, and the H-bridge circuit includes a seventh switch, an eighth switch, a ninth switch and a tenth switch, wherein the control end of the seventh switch, the control end of the eighth switch, the control end of the ninth switch and the control end of the tenth switch are all connected to the third control module, the seventh switch is connected between the positive pole of the DC power supply and the first end of the corresponding linear motor, the eighth switch is connected between the first end of the corresponding linear motor and the negative pole of the DC power supply, the ninth switch is connected between the positive pole of the DC power supply and the second end of the corresponding linear motor, and the tenth switch is connected between the second end of the corresponding linear motor and the negative pole of the DC power supply.

10. An electronic device, characterized in that: Comprising a drive circuit according to any one of claims 2 to 9.

Images