TWI781833B - Maglev smart speaker - Google Patents

Abstract

A maglev smart speaker including a maglev body and a base is provided. The maglev body includes a main body, a first magnetic part, a photographic device and a sound output part. The base includes a bottom base, a second magnetic part, a plurality of sound sensors, and a controlling device. The second magnetic part is arranged corresponds to the first magnetic part to provide the magnetic levitation force of the maglev body. The controlling device produces an angle of the estimated sound source according to sound signals, and controls the magnetic force of the second magnetic part and drives the maglev body to rotate according to the angle difference between the angle of the estimated sound source and an original angle corresponding to the photographic device.

Description

Maglev Smart Speaker

The invention relates to a maglev smart speaker, in particular to a maglev smart speaker with a bluetooth maglev speaker combined with a video lens.

A smart speaker is a speaker with a built-in artificial intelligence (AI) and a voice assistant (Voice Assistant). Not only can it have functions such as sound reinforcement and voice input, but it can also be connected to the network to control 3C household appliances by voice. It is actually used in home and life.

On the other hand, the Bluetooth maglev speaker has been a mature product so far. However, there is still no technology or related products that combine Bluetooth maglev speakers with video cameras. With the gradual popularization of video conferencing, such products will promote the diversification of video conferencing and increase consumers' willingness to purchase.

In view of the above, the present invention provides a maglev smart speaker, which includes: a maglev body, including: a body; a photographic device, arranged on the body; a first magnetic part, arranged on the body; and an audio output part, arranged on the body; and a base, including: a base; a second magnetic part, arranged on the base, and corresponding to the first magnetic part, to provide the magnetic buoyancy of the magnetic levitation body; a plurality of sound sensors a device arranged on the base, the sound sensors are used to respectively receive a plurality of sound signals; and a control device, arranged on the base and electrically coupled to the sound sensors and the second magnetic part, the The control device locates the sound signals to generate an estimated sound source angle, and the control device controls the second magnetic field according to an angle difference between the estimated sound source angle and an initial angle corresponding to the photographing device. The change of the magnetic force of the part drives the magnetic levitation body to rotate, so that the imaging device rotates to the estimated sound source angle.

To sum up, the present invention combines the technology of maglev speaker and video lens to propose a maglev smart speaker, which can rotate the maglev body to the direction of the speaker by analyzing the direction of the sound source, and at the same time provide the remote user’s voice through projection. screen, so as to improve user experience and save the need to install a liquid crystal display device.

The following description is a preferred implementation of the invention, and its purpose is to describe the basic spirit of the invention, but not to limit the invention. The actual content of the invention must refer to the scope of claims that follow.

It must be understood that words such as "comprising" and "including" used in this specification are used to indicate the existence of specific technical features, values, method steps, operations, components and/or components, but do not exclude possible Add more technical characteristics, values, method steps, operation processes, components, components or any combination of the above.

The use of words such as "first" and "second" in the claim is used to modify the components in the claim, not to indicate that there is a priority order, a prior relationship, or that one component is prior to another , or the chronological order in which the steps of the method are performed, are only used to distinguish elements with the same name.

In addition, "(electrical) coupling" or "electrical (sexual) connection" in the present invention includes any direct and indirect electrical connection means. If the description is about the transmission or provision of electronic signals, those familiar with this technology should be able to understand that the transmission of electronic signals may be accompanied by attenuation or other non-ideal changes, but if the source and receiver of electronic signal transmission or provision are not specifically stated , should be regarded as essentially the same signal.

Please refer to FIG. 1 . FIG. 1 is a schematic diagram of a maglev smart speaker according to an embodiment of the present invention. As shown in FIG. 1 , the maglev smart speaker includes a maglev body 1 and a base body 2 . The magnetic levitation body 1 includes a body 10, a photographing device 11, a first magnetic portion 12, and a sound source output portion 13, and the seat body 2 includes a base 20, a projection device 21, a second magnetic portion 22, a plurality of sound A sensor 23 and a control device 24 . It should be noted here that FIG. 1 only schematically shows the shapes of each component, but each component can be in any shape according to design requirements, and the present invention is not limited thereto.

The photographing device 11 , the first magnetic part 12 and the sound source output part 13 are disposed on the main body 10 . The photographing device 11 can be used for photographing to generate image signals. Furthermore, the camera device 11 can transmit image signals to an external device through a communication module. The first magnetic part 12 is disposed on the body 10 and may include one or more permanent magnets or electromagnetic coils. The composition of the first magnetic part 12 can be configured according to design requirements, which is not limited by the present invention. The audio output unit 13 can be used to output audio signals.

The projection device 21 , the second magnetic part 22 , the plurality of sound sensors 23 and the control device 24 are disposed on the base 20 . The projection device 21 can be used to present the image signal to the user through projection. Furthermore, the projection device 21 can receive an image signal from an external device through a communication module. The second magnetic part 22 corresponds to the first magnetic part 12 in the maglev body 1 to provide a magnetic buoyancy force for the maglev body 1 . The detailed composition will be described later. The plurality of sound sensors 23 are, for example, microphones for receiving a plurality of sound signals respectively. FIG. 1 only exemplarily shows the sound sensor 23 , and the number thereof is not limited to that shown in FIG. 1 . Further, the sound sensors 23 may be disposed on the base 20 in a circular arrangement, but the present invention is not limited thereto. In some embodiments, the above-mentioned sound sensor 23 may include a piezoelectric ceramic sound sensor, a capacitive sound sensor, or/and a magnetoelectric sound sensor.

The control device 24 can locate the sound signal obtained by the sound sensor 23 to generate an estimated sound source angle, that is, determine the source of the sound signal. The estimated sound source angle indicates the angle of the source of the sound signal. The control device 24 can control the change of the magnetic force of the second magnetic part 22 according to an angle difference between the estimated sound source angle and the initial angle corresponding to the photographing device 11 to drive the magnetic levitation body 1 to rotate, so that the photographing device 11 Rotate to estimate sound source angle.

Please refer to FIG. 1 and FIG. 2 together, wherein FIG. 2 is a partial functional block diagram of the base 20 of the maglev smart speaker according to an embodiment of the present invention. As shown in FIG. 2 , the control device 24 can be electrically coupled to the second magnetic part 22 and the plurality of sound sensors 23 . The second magnetic part 22 may include a plurality of electromagnetic coils 222 , wherein the magnetic force of each electromagnetic coil 222 may be controlled by the control device 24 . FIG. 2 exemplarily shows two electromagnetic coils and two sound sensors 23 , but the present invention does not limit the number of electromagnetic coils 222 and sound sensors 23 . The control device 24 may include a Hall effect sensor 241 , a Hall angle sensor 242 and a controller 243 .

The Hall effect sensor 241 can be used to sense a relative position between the magnetic floating body 1 and the base body 2 . Further, the Hall effect sensor 241 can sense the magnetic force change when the first magnetic part 12 in the magnetic levitation body 1 deviates relative to the base body 2, and the magnetic force change can indicate the gap between the magnetic levitation body 1 and the base body 2. relative position. It should be noted here that the Hall effect sensor 241 is an optional element.

The Hall angle sensor 242 can be used to sense an initial angle corresponding to the camera device 11 . Further, the Hall angle sensor 242 can sense the flow direction of the magnet in the first magnetic part 12 of the magnetic levitation body 1 to define the absolute angle of the magnet on the 360 circle, and the imaging device 11 can be arranged on the magnet. The direction in which the magnetic flux flows. In this way, the absolute angle of the magnet measured by the Hall angle sensor 242 can be used as the initial angle corresponding to the photographing device 11 .

In the embodiment provided with the Hall effect sensor 241, the controller 243 can perform an offset correction operation. In the embodiment provided with the Hall angle sensor 242, the controller 243 can perform the steering operation of the camera device. In the embodiment where the Hall effect sensor 241 and the Hall angle sensor 242 are provided at the same time, the controller 243 can perform the offset correction operation and the camera device steering operation. During the execution of the offset correction operation, the controller 243 can control the magnetic force of one or more of the electromagnetic coils 222 according to the relative position measured by the Hall effect sensor 241 and the preset position of the magnetic floating body 1 . Further, the controller 243 can use a virtual axis passing through the center of the base body 2 and the maglev body 1 shown in FIG. 1 as the preset position of the maglev body 1 . When the relative position of the Hall effect sensor 241 deviates from the preset position, it means that the magnetic floating body 1 is tilted relative to the base body 2, and the controller 243 can control the magnetic force of one or more of the electromagnetic coils 222 to make the magnetic floating body 1 return Default position. During the execution of the steering operation of the camera device, the controller 243 can execute a sound localization algorithm on the sound signal received by the sound sensor 23 to determine the estimated sound source angle, and can calculate the estimated sound source angle and the Hall The angle difference between the initial angles measured by the angle sensor 242 is used to control the magnetic force of one or more of the electromagnetic coils 222 to drive the first magnetic part 12 of the magnetic levitation body 1 to rotate, so that the imaging device 11 rotates to Estimate the angle of the sound source.

In some embodiments, the controller 243 may be one or more integrated circuits. In some embodiments, the controller 243 refers to a device capable of executing encoded arithmetic, logic, and/or I/O operation instructions. In some embodiments, the controller 243 can be one or more integrated circuits, such as a microprocessor (Micro Processing Unit, MPU), a microcontroller (Micro Control Unit, MCU) or a central processing unit (Central Processing Unit , CPU), or other programmable general purpose or special purpose digital signal processor (Digital Signal Processor, DSP), programmable controller, application specific integrated circuit (Application Specific Integrated Circuit, ASIC) or other Similar elements or a combination of any of the above elements, that is, the controller 243 is at least an element capable of performing the aforementioned operations, but the present invention is not limited thereto.

To further describe the operation of the maglev smart speaker, please refer to FIG. 1 and FIG. 3 together. FIG. 3 is a schematic diagram showing the operation of the maglev smart speaker according to an embodiment of the present invention. When the camera device 11 starts to start (for example, when the video starts), the multiple sound sensors 23 can respectively receive multiple sound signals from the sound source s, and the control device 24 can execute the sound localization algorithm through the internal controller to Calculate the estimated sound source angle pointing to the sound source s, calculate the angle difference between the estimated sound source angle and the initial angle described in the preceding embodiments, and then control the magnetic force of the electromagnetic coil in the second magnetic part 22 according to the angle difference. The imaging device 21 on the magnetic levitation body 1 is rotated to estimate the sound source angle.

…方程式一

…方程式二 方程式一的參數s(t)代表隨時間t變化的聲源s；參數X _m(t)代表隨時間t變化且距離聲源s的第m個聲音感測器23；參數τ代表聲音感測器23接收訊號所需的時間，單位為秒（second，縮寫為s）；參數c為聲音速度，單位為公尺/秒（m/s）；參數d代表聲音感測器23及聲源s之間的距離，單位為公尺（meter，縮寫為m）；以及，參數θ可代表聲源s與初始角度A之間所形成的角度差θ。透過上述方程式一及方程式二，即可計算出聲源s的角度（即上述估測聲源角度），並獲得角度差θ來作為磁浮體1進行旋轉的參考指標，以使攝影裝置21旋轉至估測聲源角度（即相同或趨近於聲源s的方向）。 The sound localization algorithm is, for example, a time delay method (Time Difference Of Arrival, TDOA). For example, the control device 24 can perform calculations according to the following equations 1 and 2:

…Equation One

... The parameter s(t) of equation two equation one represents the sound source s that changes with time t; Parameter X _m (t) represents the mth sound sensor 23 that changes with time t and distance sound source s; Parameter τ represents The time required for the sound sensor 23 to receive the signal, the unit is second (second, abbreviated as s); the parameter c is the speed of sound, the unit is meter/second (m/s); the parameter d represents the sound sensor 23 and The distance between the sound sources s, the unit is meter (abbreviated as m); and, the parameter θ may represent the angle difference θ formed between the sound source s and the initial angle A. Through the above equation 1 and equation 2, the angle of the sound source s (that is, the above-mentioned estimated sound source angle) can be calculated, and the angle difference θ can be obtained as a reference index for the rotation of the magnetic levitation body 1, so that the camera 21 rotates to Estimate the sound source angle (ie the same or approaching the direction of the sound source s).

To further describe the composition of the second magnetic part 22 , please refer to FIG. 1 and FIG. 4 together. FIG. 4 is a schematic diagram of the second magnetic part 22 of a maglev smart speaker according to an embodiment of the present invention. As shown in FIG. 4 , the second magnetic part 22 may include but not limited to an annular permanent magnet 221 and a plurality of electromagnetic coils 222 . The annular permanent magnet 221 has an S pole 221A and an N pole 221B, and has a fixed magnetic force. Each of the electromagnetic coils 222 can be composed of an iron core and a coil in pairs, and the respective magnetic force can be controlled by the control device 24 . FIG. 4 exemplarily illustrates the magnetic force directions of the ring-shaped permanent magnet 221 and the electromagnetic coil 222 . FIG. 4 exemplarily shows that the electromagnetic coil 222 is disposed inside the ring magnet 221 , but in other embodiments, the electromagnetic coil 222 may be disposed outside the ring permanent magnet 221 . For example, more than two electromagnetic coils 222 can be equidistantly arranged on the base 20 .

In one embodiment, the base of the maglev smart speaker can be further coupled to one or more components, such as permanent magnets, signal input/output terminals, power input terminals, one or more communication components, and the like. In one embodiment, the communication module mentioned in the present invention can be connected to the server through a wired method (such as a local area network), or connected through a wireless method, such as a radio frequency identification system (Radio Frequency Identification, RFID ) technology, Near Field Communication (NFC) technology, Wireless Fidelity (WIFI) technology, Bluetooth (Bluetooth) technology, Global System for Mobile communications (GSM) technology, general Packet Radio Service (General Packet Radio Service, GPRS) technology, Enhanced Data rates for Global Evolution (EDGE) technology, Wideband Code Division Multiple Access (WCDMA) technology, code division Multiple Access-2000 (Code Division Multiple Access 2000) technology, Time Division-Synchronous Code Division Multiple Access (TD-SCDMA) technology, Worldwide Interoperability for Microwave Access Access, WiMAX) technology, Long Term Evolution (LTE) technology, improved Long Term Evolution Advanced (LTE-A) technology and Global Navigation Satellite System (GNSS) technology, etc.

To sum up, the present invention combines the technology of maglev speaker and video lens to propose a maglev smart speaker, which can rotate the maglev body to the direction of the speaker by analyzing the direction of the sound source, and at the same time provide the remote user’s voice through projection. screen, so as to improve user experience and save the need to install a liquid crystal display device.

But what is described above is only an embodiment of the present invention, and should not limit the scope of the present invention. All simple equivalent changes and modifications made according to the patent scope of the present invention and the content of the patent specification are still within the scope of the present invention. Within the scope covered by the patent of the present invention.

1: Maglev 10: Ontology 11: Photographic device 12: The first magnetic department 13: Audio output unit 2: seat body 20: base 21: Projection device 22: The second magnetic part 221: ring magnet 221A: S pole 221B: N pole 222: electromagnetic coil 224:Magnetic force lines 23: Sound sensor 24: Control device 241: Hall effect sensor 242: Hall angle sensor 243: Controller A: Initial angle s: sound source θ: angle difference

FIG. 1 is a schematic diagram of a maglev smart speaker according to an embodiment of the present invention. FIG. 2 is a partial functional block diagram of a base of a maglev smart speaker according to an embodiment of the present invention. FIG. 3 is a schematic diagram illustrating the operation of a maglev smart speaker according to an embodiment of the present invention. FIG. 4 is a schematic diagram of a second magnetic part of a maglev smart speaker according to an embodiment of the present invention.

100: Maglev smart speaker

1: Maglev

10: Ontology

11: Photographic device

12: The first magnetic department

13: Audio output unit

2: seat body

20: base

21: Projection device

22: The second magnetic part

23: Sound sensor

24: Control device

Claims (6)

A magnetic levitation smart speaker, comprising: a magnetic levitation body, comprising: a body; a photographing device, disposed on the body; a first magnetic part, disposed on the body; and a sound source output portion, disposed on the body; And the seat body includes: a base; a second magnetic part is arranged on the base and corresponds to the first magnetic part to provide the magnetic buoyancy of the magnetic levitation body; a plurality of sound sensors are arranged on the base, The sound sensors are used to respectively receive a plurality of sound signals; and a control device is arranged on the base and electrically coupled to the sound sensors and the second magnetic part, and the control device controls the sound signals Positioning is performed to generate an estimated sound source angle, and the control device controls the change of the magnetic force of the second magnetic part to drive the The magnetic levitation body is rotated to make the photographing device rotate to the estimated sound source angle. The maglev smart speaker as described in claim 1, wherein the second magnetic part further includes a plurality of electromagnetic coils, which are equidistantly distributed on the base, and the control device controls at least one of the electromagnetic coils according to the angle difference. One of the magnetic force changes to drive the first magnetic part of the magnetic floating body to rotate. The maglev smart speaker as described in claim 1, wherein the control device further includes: a Hall angle sensor for sensing the initial angle corresponding to the photographing device; and a controller electrically coupled In the Hall angle sensor, and the controller is used to calculate the angle difference according to the estimated sound source angle and the initial angle. The maglev smart speaker as described in claim 1, wherein the second magnetic part includes a plurality of electromagnetic coils, and the control device further includes: a Hall effect sensor for sensing the distance between the maglev body and the base a relative position between them; and a controller electrically coupled to the Hall angle sensor, and the controller is used to control the magnetic force of at least one of the electromagnetic coils according to the relative position and a preset position. The maglev smart speaker as described in Claim 1, wherein the base body further includes a projection device, which is arranged on the base. The maglev smart speaker according to claim 1, wherein the sound sensors are arranged on the base in an array.

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