WO2019061033A1 - 一种超声波闹时电路及终端设备 - Google Patents

一种超声波闹时电路及终端设备 Download PDF

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Publication number
WO2019061033A1
WO2019061033A1 PCT/CN2017/103518 CN2017103518W WO2019061033A1 WO 2019061033 A1 WO2019061033 A1 WO 2019061033A1 CN 2017103518 W CN2017103518 W CN 2017103518W WO 2019061033 A1 WO2019061033 A1 WO 2019061033A1
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Prior art keywords
ultrasonic
controller
speaker
signal
target user
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PCT/CN2017/103518
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English (en)
French (fr)
Inventor
曹军
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深圳传音通讯有限公司
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Priority to PCT/CN2017/103518 priority Critical patent/WO2019061033A1/zh
Publication of WO2019061033A1 publication Critical patent/WO2019061033A1/zh

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    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B23/00—Arrangements producing acoustic signals at preselected times
    • G04B23/02—Alarm clocks

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to an ultrasonic time-consuming circuit and a terminal device.
  • the alarm clock is a kind of time-keeping device. Because it can indicate the time, especially the signal can be reminded according to people's preset time, it has become an indispensable item in life.
  • the movement structure of the alarm clock mainly includes two types: mechanical type and quartz electronic type.
  • the alarm clock generally emits a sound when the set time is reached, reaching the purpose of reminding or waking up the user, but may cause a noise when the sound is emitted.
  • the embodiment of the invention provides an ultrasonic time-consuming circuit and a terminal device. By transmitting a ring signal modulated with ultrasonic waves at a preset time, the user in the specified location area can be reminded or awake to avoid interference with people around.
  • an embodiment of the present invention provides an ultrasonic time-consuming circuit, the circuit including a controller and an ultrasonic speaker, wherein:
  • a first control end of the controller is connected to a control end of the ultrasonic speaker, and an input end of the ultrasonic speaker is connected to a ring signal;
  • the controller is configured to send a first modulation parameter to the ultrasonic speaker, the ultrasonic speaker is configured to modulate the ring signal with an ultrasonic carrier signal according to the first modulation parameter to obtain a hybrid beam signal, and to The preset time node transmits the hybrid beam signal.
  • an embodiment of the present invention provides a terminal device, including the ultrasonic time-consuming circuit according to the above first aspect.
  • the ultrasonic time-of-day circuit comprises a controller and an ultrasonic speaker, the controller comprising a processor and a memory, the memory for storing a computer program, the computer program comprising program instructions, the processor being configured for Call the program instructions and perform the following steps:
  • an embodiment of the present invention provides a computer readable storage medium, where the computer storage medium stores a computer program, where the computer program includes program instructions, and when the program instructions are executed by the processor, The processor performs the steps of the second aspect above.
  • An ultrasonic time-consuming circuit and a terminal device transmit a first modulation parameter to an ultrasonic speaker through a controller, and the ultrasonic speaker modulates the ring signal with an ultrasonic carrier signal according to the modulation parameter to obtain a mixed beam signal, It is assumed that the modulated mixed beam signal is transmitted at a time, and the hybrid beam signal can remind or wake up the user in the specified location area due to the propagation characteristics of the ultrasonic wave, thereby avoiding interference to surrounding people.
  • FIG. 1 is a schematic structural diagram of an ultrasonic time-consuming circuit according to an embodiment of the present invention
  • 2a is a schematic diagram of a hybrid beam signal transmitted by an ultrasonic time-of-day circuit according to an embodiment of the present invention
  • 2b is a schematic cross-sectional view showing another hybrid time-of-day circuit transmitting a hybrid beam signal according to an embodiment of the present invention
  • 2c is a schematic structural diagram of an ultrasonic speaker according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of another ultrasonic time-consuming circuit according to an embodiment of the present invention.
  • FIG. 4a is a schematic diagram of an imaging range of an ultrasonic time-sharing circuit camera according to an embodiment of the present invention.
  • FIG. 4b is a schematic diagram of a rotation scheme of a horn in an ultrasonic time-consuming circuit according to an embodiment of the present invention.
  • the term “if” can be interpreted as “when” or “on” or “in response to determining” or “in response to detecting” depending on the context. .
  • the phrase “if determined” or “if detected [condition or event described]” may be interpreted in context to mean “once determined” or “in response to determining” or “once detected [condition or event described] ] or “in response to detecting [conditions or events described]”.
  • the terminal device described in the embodiments of the present invention includes, but is not limited to, an alarm clock, a mobile phone with a touch-sensitive surface (for example, a touch screen display and/or a touch pad), a laptop computer or a tablet computer, and the like.
  • Portable device It should also be understood that in certain embodiments, The device is not a portable communication device, but a desktop computer with a touch sensitive surface (eg, a touch screen display and/or a touch pad).
  • terminal device including a display and a touch sensitive surface is described.
  • the terminal device may include one or more other physical user interface devices such as a physical keyboard, mouse, and/or joystick.
  • the terminal device supports various applications, such as one or more of the following: drawing application, presentation application, word processing application, website creation application, disk burning application, spreadsheet application, game application, phone Applications, video conferencing applications, email applications, instant messaging applications, workout support applications, photo management applications, digital camera applications, digital camera applications, web browsing applications, digital music player applications And/or digital video player app.
  • applications such as one or more of the following: drawing application, presentation application, word processing application, website creation application, disk burning application, spreadsheet application, game application, phone Applications, video conferencing applications, email applications, instant messaging applications, workout support applications, photo management applications, digital camera applications, digital camera applications, web browsing applications, digital music player applications And/or digital video player app.
  • Various applications that can be executed on the terminal device can use at least one common physical user interface device such as a touch sensitive surface.
  • One or more functions of the touch sensitive surface and corresponding information displayed on the terminal device can be adjusted and/or changed within the application and/or within the respective application.
  • the common physical architecture of the terminal device eg, a touch-sensitive surface
  • the ultrasonic time-sharing circuit shown in FIG. 1 includes: a controller 11 and an ultrasonic speaker 12, wherein
  • the first control end 111 of the controller 11 is connected to the control end 121 of the ultrasonic speaker 12, and the input end 122 of the ultrasonic speaker 12 is connected to the ring signal;
  • the controller 11 is configured to send a first modulation parameter to the ultrasonic speaker 12, and the ultrasonic speaker 12 is configured to modulate the ring signal with an ultrasonic carrier signal according to the first modulation parameter to obtain a hybrid beam signal, and to transmit at a preset time node.
  • the hybrid beam signal is configured to send a first modulation parameter to the ultrasonic speaker 12, and the ultrasonic speaker 12 is configured to modulate the ring signal with an ultrasonic carrier signal according to the first modulation parameter to obtain a hybrid beam signal, and to transmit at a preset time node.
  • the hybrid beam signal is configured to send a first modulation parameter to the ultrasonic speaker 12, and the ultrasonic speaker 12 is configured to modulate the ring signal with an ultrasonic carrier signal according to the first modulation parameter to obtain a hybrid beam signal, and to transmit at a preset time node.
  • the controller in the embodiment of the present invention may refer to a master device that changes the wiring of the main circuit or the control circuit in a predetermined order and changes the resistance value in the circuit to control the starting, speed regulation, braking, and reversal of the motor. It consists of a program counter, an instruction register, an instruction decoder, a timing generator, and an operation controller. It is the "decision-making body” that issues commands, that is, completes the coordination and direct operation of the entire computer system.
  • the above controller may also be a Micro Control Unit (MCU), also known as a Single Chip Microcomputer or a single chip microcomputer, which is a Central Process Unit (Central Process Unit, CPU) frequency and specifications are appropriately reduced, and memory (Memory), counter (Timer), USB, A / D conversion, Universal Asynchronous Receiver / Transmitter (UART), direct memory access (Direct Peripheral interfaces such as Memory Access (DMA) and even Liquid Crystal Display (LCD) drive circuits are integrated on a single chip to form a chip-level computer.
  • MCU Micro Control Unit
  • CPU Central Process Unit
  • memory Memory
  • Counter Timer
  • USB Universal Asynchronous Receiver / Transmitter
  • UART Universal Asynchronous Receiver / Transmitter
  • Direct Peripheral interfaces such as Memory Access (DMA) and even Liquid Crystal Display (LCD) drive circuits are integrated on a single chip to form a chip-level computer.
  • DMA Memory Access
  • LCD Liquid Crystal Display
  • the ultrasonic speaker mentioned in the embodiment of the present invention may be a device capable of modulating and transmitting a baseband signal using an ultrasonic carrier signal.
  • the ultrasonic speaker may directly use an ultrasonic generator without using any conventional speaker unit.
  • a specially processed ultrasonic beam is generated, the ultrasonic beam comprising a ring signal that the human ear can listen to.
  • the ultrasonic wave mentioned in the embodiment of the present invention is a sound wave with a frequency higher than 20000 Hz, which has good directivity, strong penetrating ability, and easy to obtain concentrated sound energy, and the sound wave frequency that the human ear can hear is 20 Hz-20000 Hz. Does not include ultrasound.
  • the controller 11 may send the first modulation parameter to the ultrasonic speaker 12, and the ultrasonic speaker 12 may modulate the received ring signal with an ultrasonic carrier signal according to the first modulation parameter to obtain the mixed beam signal, and the first modulation.
  • the parameter may include a preset time node, which may be any time or multiple moments in the future (eg, 7:45 am every day from Monday to Friday or 01:00 pm on the current day), and the ultrasonic speaker 12 may be at the preset time node described above.
  • the hybrid beam signal is transmitted, and the human ear cannot hear the ultrasonic wave, but the ring signal in the mixed beam signal can be heard by the human ear.
  • the first modulation parameter may further include a first preset distance, and an amplitude of the ultrasonic carrier signal may be determined based on the first preset distance.
  • the larger the preset distance the larger the amplitude of the ultrasonic carrier signal.
  • the first preset distance refers to the distance traveled by the hybrid beam signal, that is, the distance between the ultrasonic speaker 12 and the position where the hybrid beam signal needs to be received, and the distance from the ultrasonic speaker 12 beyond the distance can no longer receive the hybrid beam. signal.
  • the first correspondence relationship information between the first preset distance and the amplitude of the ultrasonic carrier signal may be stored in the ultrasonic speaker 12, and the first correspondence information may be stored in a table form.
  • the amplitude of the ultrasonic wave is generally Larger, the greater the energy, the farther the distance traveled. Therefore, the larger the above preset distance, the higher the amplitude of the corresponding ultrasonic carrier signal, and the farther the obtained hybrid beam signal propagates.
  • the ultrasonic speaker 12 receives the first modulation parameter transmitted by the controller 11
  • the ultrasonic speaker 12 can determine the amplitude of the currently modulated ultrasonic carrier signal by using the first correspondence relationship information.
  • the mixed-beam signal obtained by modulating the above-mentioned ring signal with the ultrasonic carrier signal of the amplitude the user can listen to the ring signal at a position far from the ultrasonic speaker 12 by a first preset distance.
  • the first modulation parameter may further include a preset beam angle, and the frequency of the ultrasonic carrier signal is determined based on the preset beam angle.
  • the preset beam angle may refer to a beam angle of the hybrid beam signal transmitted by the ultrasonic speaker 12, and the beam angle may determine an angular range of propagation of the hybrid beam signal, as shown in FIG. 2a, a cross section of the ultrasonic speaker 12 transmitting the mixed beam signal.
  • FIG. 2a a cross section of the ultrasonic speaker 12 transmitting the mixed beam signal.
  • the second speaker relationship information of the preset beam angle and the frequency of the ultrasonic carrier signal may be stored in the ultrasonic speaker 12, and the second correspondence information may be stored in a table form.
  • the frequency of the ultrasonic wave is higher. The shorter the wavelength, the more concentrated the beam energy is, and the directionality is good. Therefore, the smaller the preset beam angle is, the higher the frequency of the corresponding ultrasonic carrier signal is, and the smaller the beam angle of the obtained hybrid beam signal is.
  • the ultrasonic speaker 12 receives the first modulation parameter transmitted by the controller 11 and further includes a preset beam angle, the ultrasonic speaker 12 can determine the frequency of the currently modulated ultrasonic carrier signal by using the second correspondence information.
  • the ring signal is modulated by the ultrasonic carrier signal of the frequency to obtain a mixed beam signal, and the ultrasonic speaker 12 transmits the modulated signal at the preset time node, as shown in FIG. 2b, within a region within a first preset distance (eg, area A)
  • the ringtone can be heard, and the user can listen to the ringtone in the area B far from the ultrasonic speaker 12 by a first preset distance.
  • the ultrasonic speaker 12 may include a speaker 1202 and an ultrasonic modulator 1201, wherein
  • the output end 1211 of the ultrasonic modulator 1201 is connected to the input end 1221 of the horn 1202, the control end 121 of the ultrasonic modulator 1201 is the control end 121 of the ultrasonic speaker 12, and the input end 122 of the ultrasonic modulator 1201 is the input of the ultrasonic speaker 12. End 122;
  • the controller 11 is configured to send a first modulation parameter to the ultrasonic modulator 1201, and the ultrasonic modulator 1201 is configured to modulate the ringtone signal with the ultrasonic carrier signal according to the first modulation parameter to obtain a modulated signal, and The preset time node outputs the modulated signal to the speaker 1202.
  • the horn 1202 is configured to transmit the hybrid beam signal according to the modulated signal.
  • the ultrasonic modulator mentioned in the embodiment of the present invention may be a device capable of modulating a baseband signal using an ultrasonic carrier signal.
  • a horn is an electro-acoustic component that converts an electrical signal into a sound signal, also called a speaker.
  • the horn mentioned in the embodiment of the present invention refers to a horn that can output high-frequency signals (including ultrasonic waves), or an ultrasonic power amplifier. .
  • the controller 11 may send a first modulation parameter to the ultrasonic modulator 1201, and the ultrasonic modulator 1201 may modulate the received ring signal with an ultrasonic carrier signal according to the first modulation parameter to obtain the modulated signal, where the first
  • the modulation parameter may include a preset time node, and the ultrasonic modulator 1201 may output the modulation signal to the speaker 1202 at the preset time node.
  • the horn 1202 can convert the modulated signal into the hybrid beam signal and transmit the hybrid beam signal.
  • the first modulation parameter may further include a first preset distance, and an amplitude of the ultrasonic carrier signal may be determined based on the first preset distance.
  • the first preset distance may refer to a distance traveled by the hybrid beam signal, that is, a distance between the horn 1202 and a position where the hybrid beam signal needs to be received.
  • the first corresponding relationship between the first preset distance and the amplitude of the ultrasonic carrier signal may be stored in the ultrasonic modulator 1201, and the first modulation parameter sent by the ultrasonic modulator 1201 to the controller 11 includes the first pre-preparation.
  • the ultrasonic modulator 1201 can determine the amplitude of the ultrasonic carrier signal of the current modulation by using the first correspondence information.
  • the process can refer to the processing procedure of the ultrasonic speaker, and details are not described herein.
  • the ring signal is modulated by the ultrasonic carrier signal of the amplitude to obtain a modulated signal, and the speaker 1202 transmits the mixed beam signal according to the modulated signal, so that the user can listen to the ringtone at a position far from the ultrasonic speaker 12 by a first preset distance.
  • the first modulation parameter may further include a preset beam angle, and the frequency of the ultrasonic carrier signal is determined based on the preset beam angle.
  • the preset beam angle may refer to a beam angle of the hybrid beam signal transmitted by the horn 1202, and the beam angle may determine an angular range of propagation of the hybrid beam signal.
  • the second modulator relationship information of the preset beam angle and the frequency of the ultrasonic carrier signal may be stored in the ultrasonic modulator 1201, and the first modulation parameter sent by the ultrasonic modulator 1201 to the controller 11 further includes a preset beam.
  • the ultrasonic modulator 1201 can determine the frequency of the ultrasonic carrier signal of the current modulation by using the second correspondence information.
  • the process can refer to the processing procedure of the ultrasonic speaker, and details are not described herein.
  • the wave carrier signal is modulated to obtain the modulated signal, and the modulated signal is output to the horn 1202 at the preset time node, and the horn 1202 can transmit the mixed beam signal according to the modulated signal, as shown in FIG. 2b, the user can
  • the speaker 12 listens to the ringtone in the area B far from the first predetermined distance.
  • the ultrasonic time-consuming circuit may further include an input device 13.
  • the transmitting end 131 of the input device 13 is connected to the first receiving end 112 of the controller 11, and the input device 13 is configured to set the preset time node and the preset. distance.
  • the input device mentioned in the embodiment of the present invention may include a touch panel, a fingerprint sensor (for collecting fingerprint information of the user and direction information of the fingerprint), a microphone, and the like, and the user may use a virtual button of the input device,
  • the physical button or the voice function is input to set the preset time node and the preset distance, and the input device 13 can send the preset time node and the preset distance to the controller 11.
  • the preset time node and the preset distance By changing the preset time node and the preset distance, the time node of the above-mentioned mixed beam signal and the propagation distance of the mixed beam signal can be adjusted, and the circuit can wake up or wake up the specified location area in different scenarios. Users have increased the flexibility of this circuit application.
  • the ultrasonic time-sharing circuit shown in FIG. 3 is further based on the embodiment of the ultrasonic time-sharing circuit shown in FIG.
  • the optimized ultrasonic time-sharing circuit shown in FIG. 3 further includes: a camera 14 and a motor 15 based on the ultrasonic time-sharing circuit shown in FIG.
  • the transmitting end 141 of the camera 14 is connected to the second receiving end 113 of the controller 11, the first control end 151 of the motor 15 is connected to the second control end 114 of the controller 11, the base 1200 of the horn 1202 and the motor 15
  • the second control terminal 152 is connected;
  • the camera 14 is configured to detect whether there is a target user in the preset range, and the camera 14 is further configured to: when detecting that the target user exists within the preset range, take a picture including the target user image and send the picture to the controller 11
  • the controller 11 is configured to determine, according to the position of the target user image in the picture, a target angle that the horn 1202 needs to rotate and a target direction that the horn 1202 needs to rotate, and control the motor 15 to rotate the horn 1202 according to the target angle and the target direction. .
  • the camera is also called a computer camera, a computer eye, an electronic eye, etc., and is a video input device, which can perform still picture shooting or movie shooting.
  • the motor can be called an electric motor, an engine, and the embodiment of the present invention.
  • the motor in the middle is a device that can rotate the rotating shaft of other equipment through the pinion.
  • the camera 14 may have a preset range of imaging, and the preset range may be a fan-shaped area with the camera 14 as a vertex, as shown in FIG. 4a.
  • the preset range may be set, for example, a preset may be set.
  • the farthest distance of the range is 5 meters, that is, the predetermined range is a fan-shaped area having a side length of 5 meters with the camera 14 as a vertex in a cut surface (side view or plan view).
  • the target user refers to a user who needs to wake up or wake up using the circuit
  • the camera 14 can detect whether there is a target user within the preset range, and if present, the camera 14 can take a picture containing the image of the target user and
  • the image is sent to the controller 11, and the target user image may be a whole body image, a half body image or a facial avatar of the target user, and the controller 11 may analyze the image to identify the target user image, for example, through the image element in the image.
  • the contour identifies a full-body image of the target user and determines the position of the target user image in the picture, further determines a target angle at which the horn 1202 needs to be rotated, and a target direction at which the horn 1202 needs to be rotated, and controls the motor 15 to follow the target angle and The target direction rotates the horn 1202.
  • the motor 15 is coupled to the base 1200 of the horn 1202.
  • the base 1200 is moved by the gear to move or rotate the horn 1202, that is, the horn 1202 rotates the target angle in the target direction.
  • the location of the target user is as shown in Figure 4b.
  • a horn rotational top view Before and after a horn rotational top view, may be mixed reception range of the signal beam emitted from the horn changes in region 1 region 2. Adjusting the vocal direction of the horn by the location of the target user determined by the camera can more accurately enable the target user to receive the ringtone, and can also prevent the user from receiving the ringtone after being displaced during sleep.
  • the controller 11 is further configured to determine a state of the target user according to the target user image, and if the controller 11 determines that the target user is in a non-sleep state, the controller 11 is further configured to determine, at the controller 11, that the target user is in a non-sleep state. In the sleep state, the control horn 1202 stops transmitting the hybrid beam signal.
  • the controller 11 may determine the current state of the target user by recognizing the contour of the target user image, for example, the controller 11 may recognize that the target user is in a sitting or standing posture by the contour of the target user image, and the controller 11 may determine When the user is in a non-sleep state, the controller 11 can control the speaker 1202 to stop transmitting the hybrid beam signal.
  • the controller 11 is further configured to send the second modulation parameter to the ultrasonic modulator 1201 when the controller 11 determines that the target user is in a sleep state
  • the second modulation parameter includes a second preset distance.
  • the second preset distance is greater than the first preset distance.
  • the controller 11 may identify that the target user is in a lying posture by the contour of the target user image, the controller 11 may determine that the user is in a sleep state, and the controller 11 may send the second modulation parameter to the ultrasonic modulator 1201.
  • the second modulation parameter may include a second preset distance, where the second preset distance is greater than the first preset distance, and the ultrasonic modulator 1201 modulates the ring signal with the ultrasonic carrier signal according to the second preset distance.
  • the amplitude of the signal is increased, and a stronger mixed beam signal can be sent.
  • the mixed beam signal can be enhanced to wake up the target user, which has a better reminding effect.
  • the embodiment of the present invention further provides a terminal device, which may include any of the ultrasonic time-sharing circuits as shown in FIG. 1 or FIG. 3, wherein the ultrasonic time-of-day circuit includes a controller 11 and an ultrasonic speaker 12,
  • the controller 11 includes a processor and a memory, the memory 1102 is for storing a computer program, the computer program comprising program instructions, the processor being configured to invoke the program instructions, and performing the following steps:
  • the state of the target user is determined based on the target user image described above.
  • the terminal device may be an alarm clock
  • the alarm clock includes any of the ultrasonic time-sharing circuits shown in FIG. 1 or FIG. 3.
  • the alarm clock may be suspended or fixed on the wall, and may be more accurately sent to the target user. remind.
  • a computer readable storage medium is stored, the computer readable storage medium storing a computer program, the computer program comprising program instructions, when executed by a processor, causing the processor to execute the following step:
  • the state of the target user is determined based on the target user image described above.
  • the computer readable storage medium may be in the ultrasonic time circuit according to any of the foregoing embodiments.
  • the internal storage unit of the controller may also be an external storage device of the above ultrasonic time circuit, such as a plug-in hard disk equipped with a processor, a smart memory card (SMC), and a secure digital (Secure Digital, SD) ) cards, flash cards, etc.
  • the computer readable storage medium may also include both an internal storage unit of the processor in the ultrasonic time circuit and an external storage device.
  • the computer readable storage medium is for storing the computer program and other programs and data required by the ultrasonic time circuit.
  • the computer readable storage medium can also be used to temporarily store data that has been output or is about to be output.
  • the disclosed noise reduction circuit and noise reduction circuit processing system can be implemented in other manners.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, or an electrical, mechanical or other form of connection.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the technical solution of the present invention contributes in essence or to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium.
  • Including a number of instructions to make a computer device (which can be a personal computer, a server, or The network device or the like) performs all or part of the steps of the method of the various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

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Abstract

本发明提供了一种超声波闹时电路及终端设备，所述超声波闹时电路包括控制器和超声波扬声器，其中：所述控制器的第一控制端和所述超声波扬声器的控制端连接，所述超声波扬声器的输入端接入铃声信号；所述控制器用于向所述超声波扬声器发送第一调制参数，所述超声波扬声器用于根据所述第一调制参数将所述铃声信号用超声波载波信号进行调制以得到混合波束信号，以及用于在预设时间节点发射所述混合波束信号。本发明提供的超声波闹时电路，通过在预设时刻发射使用超声波调制的混合波束信号，可以提醒或唤醒指定位置区域的用户，避免对周围的人的干扰。

Description

一种超声波闹时电路及终端设备 技术领域
本发明涉及通信技术领域，特别涉及一种超声波闹时电路及终端设备。
背景技术
闹钟属于一种闹时装置，因其能指示时间，特别是能按人们预先设定的时刻发出信号进行提醒，已经成为在生活中不可缺少的物品。
目前，闹钟的机芯结构主要有机械式和石英电子式两大类。闹钟一般是在到了设定时间的情况下发出声音，达到提醒或者唤醒用户的目的，但在发出声音的时候可能会吵到他人。
发明内容
本发明实施例提供一种超声波闹时电路及终端设备，通过在预设时刻发射用超声波进行调制的铃声信号，可以提醒或唤醒指定位置区域的用户，避免对周围的人的干扰。
第一方面，本发明实施例提供了一种超声波闹时电路，所述电路包括控制器和超声波扬声器，其中：
所述控制器的第一控制端和所述超声波扬声器的控制端连接，所述超声波扬声器的输入端接入铃声信号；
所述控制器用于向所述超声波扬声器发送第一调制参数，所述超声波扬声器用于根据所述第一调制参数将所述铃声信号用超声波载波信号进行调制以得到混合波束信号，以及用于在预设时间节点发射所述混合波束信号。
第二方面，本发明实施例提供了一种终端设备，包括上述第一方面所述的超声波闹时电路。其中，所述超声波闹时电路包括控制器和超声波扬声器，所述控制器包括处理器和存储器，所述存储器用于存储计算机程序，所述计算机程序包括程序指令，所述处理器被配置用于调用所述程序指令，执行如下步骤：
向所述超声波扬声器发送所述第一调制参数和第二调制参数；
根据所述目标用户图像在所述图片中的位置确定所述喇叭需要旋转的目标 角度以及所述喇叭需要旋转的目标方向；
根据所述目标用户图像确定所述目标用户的状态。
第三方面，本发明实施例提供了一种计算机可读存储介质，所述计算机存储介质存储有计算机程序，所述计算机程序包括程序指令，所述程序指令当被所述处理器执行时使所述处理器执行上述第二方面的步骤。
本发明实施例提供的一种超声波闹时电路及终端设备，通过控制器向超声波扬声器发送第一调制参数，超声波扬声器根据调制参数将铃声信号用超声波载波信号进行调制以得到混合波束信号，在预设时刻发射调制后的混合波束信号，由于超声波的传播特性，上述混合波束信号可以提醒或唤醒指定位置区域的用户，从而避免对周围的人的干扰。
附图说明
为了更清楚地说明本发明实施例技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明实施例提供的一种超声波闹时电路的结构示意图；
图2a是本发明实施例提供的一种超声波闹时电路发射的混合波束信号示意图；
图2b是本发明实施例提供的另一种超声波闹时电路发射混合波束信号的截面示意图；
图2c是本发明实施例提供的一种超声波扬声器的结构示意图；
图3是本发明实施例提供的另一种超声波闹时电路的结构示意图；
图4a是本发明实施例提供的一种超声波闹时电路摄像头的摄像范围示意图；
图4b是本发明实施例提供的一种超声波闹时电路中喇叭的旋转方案示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。在本文中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本发明的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本文所描述的实施例可以与其它实施例相结合。
基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别不同对象，而不是用于描述特定顺序。此外，术语“包括”和“具有”以及它们任何变形，意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、系统、产品或设备没有限定于已列出的步骤或单元，而是可选地还包括没有列出的步骤或单元，或可选地还包括对于这些过程、方法、产品或设备固有的其他步骤或单元。
还应当理解，在此本发明说明书中所使用的术语仅仅是出于描述特定实施例的目的而并不意在限制本发明。如在本发明说明书和所附权利要求书中所使用的那样，除非上下文清楚地指明其它情况，否则单数形式的“一”、“一个”及“该”意在包括复数形式。
还应当进一步理解，在本发明说明书和所附权利要求书中使用的术语“和/或”是指相关联列出的项中的一个或多个的任何组合以及所有可能组合，并且包括这些组合。
如在本说明书和所附权利要求书中所使用的那样，术语“如果”可以依据上下文被解释为“当...时”或“一旦”或“响应于确定”或“响应于检测到”。类似地，短语“如果确定”或“如果检测到[所描述条件或事件]”可以依据上下文被解释为意指“一旦确定”或“响应于确定”或“一旦检测到[所描述条件或事件]”或“响应于检测到[所描述条件或事件]”。
具体实现中，本发明实施例中描述的终端设备包括但不限于诸如闹钟、具有触摸敏感表面(例如，触摸屏显示器和/或触摸板)的移动电话、膝上型计算机或平板计算机之类的其它便携式设备。还应当理解的是，在某些实施例中，所 述设备并非便携式通信设备，而是具有触摸敏感表面(例如，触摸屏显示器和/或触摸板)的台式计算机。
在接下来的讨论中，描述了包括显示器和触摸敏感表面的终端设备。然而，应当理解的是，终端设备可以包括诸如物理键盘、鼠标和/或控制杆的一个或多个其它物理用户接口设备。
终端设备支持各种应用程序，例如以下中的一个或多个：绘图应用程序、演示应用程序、文字处理应用程序、网站创建应用程序、盘刻录应用程序、电子表格应用程序、游戏应用程序、电话应用程序、视频会议应用程序、电子邮件应用程序、即时消息收发应用程序、锻炼支持应用程序、照片管理应用程序、数码相机应用程序、数字摄影机应用程序、web浏览应用程序、数字音乐播放器应用程序和/或数字视频播放器应用程序。
可以在终端设备上执行的各种应用程序可以使用诸如触摸敏感表面的至少一个公共物理用户接口设备。可以在应用程序之间和/或相应应用程序内调整和/或改变触摸敏感表面的一个或多个功能以及终端设备上显示的相应信息。这样，终端设备的公共物理架构(例如，触摸敏感表面)可以支持具有对用户而言直观且透明的用户界面的各种应用程序。
参见图1，是本发明实施例提供的一种超声波闹时电路的结构示意图，如图1所示的超声波闹时电路包括：控制器11和超声波扬声器12，其中，
控制器11的第一控制端111和超声波扬声器12的控制端121连接，超声波扬声器12的输入端122接入铃声信号；
控制器11用于向超声波扬声器12发送第一调制参数，超声波扬声器12用于根据第一调制参数将该铃声信号用超声波载波信号进行调制以得到混合波束信号，以及用于在预设时间节点发射该混合波束信号。
本发明实施例中的控制器可以是指按照预定顺序改变主电路或控制电路的接线和改变电路中电阻值来控制电动机的启动、调速、制动和反向的主令装置。由程序计数器、指令寄存器、指令译码器、时序产生器和操作控制器组成，它是发布命令的“决策机构”，即完成协调和指挥整个计算机系统的操作。上述控制器也可以是微控制单元(Microcontroller Unit，MCU)，又称为单片微型计算机(Single Chip Microcomputer)或者单片机，是把中央处理器(Central Process Unit， CPU)的频率与规格做适当缩减，并将内存(Memory)、计数器(Timer)、USB、A/D转换、通用异步收发传输器(Universal Asynchronous Receiver/Transmitter，UART)、直接内存存取(Direct Memory Access，DMA)等周边接口，甚至液晶显示器(Liquid Crystal Display，LCD)驱动电路都整合在单一芯片上，形成芯片级的计算机。
本发明实施例提到的超声波扬声器，可以是能将基带信号使用超声波载波信号调制并发射的器件，可选的，上述超声波扬声器可以不使用任何传统形式的扬声器单元，而是直接利用超声波发生器产生经过特殊处理的超声波束，上述超声波束包含人耳能够收听的铃声信号。本发明实施例中提到的超声波是一种频率高于20000Hz的声波，它的方向性好，穿透能力强，易于获得较集中的声能，人类耳朵能听到的声波频率为20Hz-20000Hz，不包括超声波。
具体地，上述控制器11可以向超声波扬声器12发送第一调制参数，超声波扬声器12可以根据第一调制参数将接收到的铃声信号用超声波载波信号进行调制，得到上述混合波束信号，上述第一调制参数可以包括预设时间节点，该预设时间节点可以是未来任一时刻或多个时刻(例如周一到周五每天7:45am或当日01:00pm)，超声波扬声器12可以在上述预设时间节点发射该混合波束信号，人类耳朵不能听到超声波，但是该混合波束信号中的铃声信号能够被人耳听到。
上述第一调制参数可以还包括第一预设距离，上述超声波载波信号的振幅可以基于所述第一预设距离确定。一般而言，预设距离越大，该超声波载波信号的振幅越大。上述第一预设距离指上述混合波束信号传播的距离，即超声波扬声器12与需要接收上述混合波束信号的位置的距离，与超声波扬声器12的距离超过该距离的位置不再能收到该混合波束信号。
具体地，超声波扬声器12中可以存储上述第一预设距离与上述超声波载波信号的振幅的第一对应关系信息，该第一对应关系信息可以以表格形式存储，由于一般而言，超声波的振幅越大，能量越大，传播的距离越远，因此，上述预设距离越大，对应的超声波载波信号的振幅越高，得到的该混合波束信号传播的距离越远。当超声波扬声器12接收到控制器11发送的第一调制参数包括 第一预设距离时，超声波扬声器12可以通过上述第一对应关系信息，确定本次调制的超声波载波信号的振幅。将上述铃声信号用该振幅的超声波载波信号调制得到的混合波束信号，用户可以在与超声波扬声器12相隔第一预设距离远的位置收听到铃声信号。
可选的，上述第一调制参数还可以包括预设波束角度，上述超声波载波信号的频率基于所述预设波束角度确定。上述预设波束角度可以指超声波扬声器12发射的上述混合波束信号的波束角度，该波束角度可以确定该混合波束信号传播的角度范围，如图2a所示为超声波扬声器12发射上述混合波束信号的截面示意图，其中波束角度即为上述混合波束信号的波束角度。
具体地，超声波扬声器12中可以存储上述预设波束角度与上述超声波载波信号的频率的第二对应关系信息，该第二对应关系信息可以以表格形式存储，由于一般而言，超声波的频率越高，波长越短，发出的波束能量越集中，方向性好，因此，上述预设波束角度越小，对应的超声波载波信号的频率越高，得到的混合波束信号的波束角度也就越小。当超声波扬声器12接收到控制器11发送的第一调制参数还包括预设波束角度时，超声波扬声器12可以通过上述第二对应关系信息，确定本次调制的超声波载波信号的频率。将上述铃声信号用该频率的超声波载波信号调制得到混合波束信号，超声波扬声器12在上述预设时间节点发射该调制信号，如图2b所示，在第一预设距离以内的区域(如区域A)都可以收听到铃声，用户可以在与超声波扬声器12相隔第一预设距离远的区域B内收听到铃声。
如图2c所示，超声波扬声器12可以包括：喇叭1202和超声波调制器1201，其中，
超声波调制器1201的输出端1211与喇叭1202的输入端1221连接，超声波调制器1201的控制端121为超声波扬声器12的控制端121，所述超声波调制器1201的输入端122为超声波扬声器12的输入端122；
其中，控制器11用于向超声波调制器1201发送第一调制参数，超声波调制器1201用于根据第一调制参数将上述铃声信号用上述超声波载波信号进行调制以得到调制信号，以及用于在上述预设时间节点将该调制信号输出至喇叭 1202，喇叭1202用于根据该调制信号发射上述混合波束信号。
本发明实施例提到的超声波调制器，可以是能将基带信号使用超声波载波信号进行调制的器件。喇叭是一种电声元件，作用是将电信号转换为声音信号，也叫扬声器，本发明实施例提到的喇叭指的是可以输出高频信号(包括超声波)的喇叭，或称为超声波功放。
具体地，上述控制器11可以向超声波调制器1201发送第一调制参数，超声波调制器1201可以根据第一调制参数将接收到的铃声信号用超声波载波信号进行调制，得到上述调制信号，上述第一调制参数可以包括预设时间节点，超声波调制器1201可以在上述预设时间节点将该调制信号输出至喇叭1202。喇叭1202可以将该调制信号转换为上述混合波束信号后，发射该混合波束信号。
上述第一调制参数可以还包括第一预设距离，上述超声波载波信号的振幅可以基于所述第一预设距离确定。上述第一预设距离可以指上述混合波束信号传播的距离，即喇叭1202与需要接收上述混合波束信号的位置的距离。
具体地，超声波调制器1201中可以存储上述第一预设距离与上述超声波载波信号的振幅的第一对应关系信息，当超声波调制器1201接收到控制器11发送的第一调制参数包括第一预设距离时，超声波调制器1201可以通过上述第一对应关系信息，确定本次调制的超声波载波信号的振幅，该过程可以参考上述超声波扬声器的处理过程，在此不再赘述。将上述铃声信号用该振幅的超声波载波信号调制得到调制信号，喇叭1202根据该调制信号发射上述混合波束信号，则用户可以在与超声波扬声器12相隔第一预设距离远的位置收听到铃声。
上述第一调制参数还可以包括预设波束角度，上述超声波载波信号的频率基于所述预设波束角度确定。上述预设波束角度可以指喇叭1202发射的上述混合波束信号的波束角度，该波束角度可以确定该混合波束信号传播的角度范围。
具体地，超声波调制器1201中可以存储上述预设波束角度与上述超声波载波信号的频率的第二对应关系信息，当超声波调制器1201接收到控制器11发送的第一调制参数还包括预设波束角度时，超声波调制器1201可以通过上述第二对应关系信息，确定本次调制的超声波载波信号的频率，该过程可以参考上述超声波扬声器的处理过程，在此不再赘述。将上述铃声信号用该频率的超声 波载波信号调制得到上述调制信号，并在上述预设时间节点将该调制信号输出至喇叭1202，喇叭1202可以根据该调制信号发射上述混合波束信号，如图2b所示，则用户可以在与超声波扬声器12相隔第一预设距离远的区域B内收听到铃声。
可选的，该超声波闹时电路还可以包括输入装置13，输入装置13的发送端131与控制器11的第一接收端112连接，输入装置13用于设置上述预设时间节点和上述预设距离。
具体地，本发明实施例提到的输入装置，可以包括触控板、指纹采传感器(用于采集用户的指纹信息和指纹的方向信息)、麦克风等，用户可以通过该输入装置的虚拟按键、物理按键或语音功能进行输入，以设置上述预设时间节点和上述预设距离，输入装置13可以将上述预设时间节点和上述预设距离发送到控制器11。通过改变预设时间节点和预设距离，喇叭发出上述混合波束信号的时间节点和该混合波束信号的传播距离可以进行调节，在不同的场景下应用该电路都能唤醒或叫醒指定位置区域的用户，增加了该电路应用的灵活性。
参见图3，是本发明实施例提供的另一种超声波闹时电路的结构示意图，如图3所示的超声波闹时电路是在图1所示的超声波闹时电路的实施例的基础上进一步优化得到的，如图3所示的超声波闹时电路在图1所示的超声波闹时电路的基础上还包括：摄像头14和马达15，其中，
摄像头14的发送端141与控制器11的第二接收端113连接，马达15的第一控制端151与控制器11的第二控制端114连接，喇叭1202的基座1200与所述马达15的第二控制端152连接；
摄像头14用于检测预设范围内是否存在目标用户，摄像头14还用于在检测到该预设范围内存在目标用户时，拍摄包含上述目标用户图像的图片并将该图片发送至控制器11，控制器11用于根据上述目标用户图像在该图片中的位置确定喇叭1202需要旋转的目标角度以及喇叭1202需要旋转的目标方向，以及用于控制马达15按照上述目标角度以及上述目标方向旋转喇叭1202。
摄像头又称为电脑相机、电脑眼、电子眼等，是一种视频输入设备，可以进行静态图片拍摄或短片拍摄，马达可以称为电动机、发动机，本发明实施例 中的马达为可以通过小齿轮带动其他设备的转动轴旋转的装置。
具体地，摄像头14可以具有摄像的预设范围，该预设范围可以是以摄像头14为顶点的扇形区域，如图4a所示，可选的，该预设范围可以进行设置，例如可以设置预设范围的最远距离为5米，即该预设范围以切面(侧视或俯视)来说是以摄像头14为顶点的边长为5米的扇形区域。其中，目标用户指的是需要使用该电路被叫醒或唤醒的用户，摄像头14可以通过检测该预设范围内是否存在目标用户，若存在，摄像头14可以拍摄包含上述目标用户图像的图片并将该图片发送至控制器11，目标用户图像可以是目标用户的全身图像、半身图像或面部头像，控制器11可以对该图片进行分析，识别出该目标用户图像，例如通过该图片中的图像元素的轮廓识别出目标用户的全身图像，并确定该目标用户图像在该图片中的位置，进一步确定喇叭1202需要旋转的目标角度以及喇叭1202需要旋转的目标方向，并控制马达15按照上述目标角度以及上述目标方向旋转喇叭1202，具体地，马达15与喇叭1202的基座1200连接，马达15工作时通过齿轮转动带动基座1200来移动或转动喇叭1202，即喇叭1202向该目标方向旋转该目标角度后朝向该目标用户所在的位置，如图4b所示，为喇叭旋转前后的俯视示意图，喇叭发出的上述混合波束信号的可接收范围从区域1变化为区域2。通过摄像头确定的目标用户所在位置来调整喇叭的发声方向，可以更准确地使目标用户接收到铃声，还可以防止用户在睡眠中发生位移后收不到铃声的情况。
可选的，控制器11还用于根据上述目标用户图像确定目标用户的状态，若控制器11确定该目标用户处于非睡眠状态，控制器11还用于在控制器11确定该目标用户处于非睡眠状态时，控制喇叭1202停止发射上述混合波束信号。
具体地，控制器11可以通过识别目标用户图像的轮廓确定目标用户的当前状态，例如控制器11可以通过目标用户图像的轮廓识别出该目标用户处于坐立或站立姿势，则控制器11可以确定该用户处于非睡眠状态，则控制器11可以控制喇叭1202停止发射上述混合波束信号。
可选的，若控制器11还用于在控制器11确定所述目标用户处于睡眠状态时，向超声波调制器1201发送第二调制参数，该第二调制参数包括第二预设距 离，该第二预设距离大于第一预设距离。
具体地，控制器11可以通过目标用户图像的轮廓识别出该目标用户处于躺卧姿势，则控制器11可以确定该用户处于睡眠状态，控制器11可以向超声波调制器1201发送第二调制参数，该第二调制参数可以包括第二预设距离，该第二预设距离大于第一预设距离，则超声波调制器1201根据第二预设距离将铃声信号用超声波载波信号进行调制得到的混合波束信号的振幅增大，可以发出更强的混合波束信号，即当前的混合波束信号未唤醒该目标用户时，可以增强该混合波束信号以唤醒该目标用户，具有更好的提醒效果。
本发明实施例还提供一种终端设备，该终端设备可以包括如图1或图3所示的任一超声波闹时电路，其中，所述超声波闹时电路包括控制器11和超声波扬声器12，该控制器11包括处理器和存储器，存储器1102用于存储计算机程序，所述计算机程序包括程序指令，所述处理器被配置用于调用所述程序指令，执行如下步骤：
向超声波扬声器12发送第一调制参数和第二调制参数；
根据目标用户图像在图片中的位置确定喇叭1202需要旋转的目标角度以及喇叭1202需要旋转的目标方向；
根据上述目标用户图像确定目标用户的状态。
具体地，该终端设备可以为闹钟，该闹钟包括图1或图3所示的任一超声波闹时电路，可选的，该闹钟可以悬挂或固定于墙上，可以更准确地对目标用户发出提醒。
在本发明的另一实施例中提供一种计算机可读存储介质，该计算机可读存储介质存储有计算机程序，该计算机程序包括程序指令，上述程序指令当被处理器执行时使处理器执行如下步骤：
向超声波扬声器12发送第一调制参数和第二调制参数；
根据目标用户图像在图片中的位置确定喇叭1202需要旋转的目标角度以及喇叭1202需要旋转的目标方向；
根据上述目标用户图像确定目标用户的状态。
所述计算机可读存储介质可以是前述任一实施例所述的超声波闹时电路中 的控制器的内部存储单元，也可以是上述超声波闹时电路的外部存储设备，例如处理器上配备的插接式硬盘，智能存储卡(Smart Media Card,SMC)，安全数字(Secure Digital,SD)卡，闪存卡(Flash Card)等。进一步地，所述计算机可读存储介质还可以既包括超声波闹时电路中的处理器的内部存储单元也包括外部存储设备。所述计算机可读存储介质用于存储所述计算机程序以及所述超声波闹时电路所需的其他程序和数据。所述计算机可读存储介质还可以用于暂时地存储已经输出或者将要输出的数据。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、计算机软件或者二者的结合来实现，为了清楚地说明硬件和软件的可互换性，在上述说明中已经按照功能一般性地描述了各示例的组成及步骤。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。
所属领域的技术人员可以清楚地了解到，为了描述的方便和简洁，上述描述的降噪电路和单元或设备的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的降噪电路、降噪电路处理系统，可以通过其它的方式实现。例如，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口、装置或单元的间接耦合或通信连接，也可以是电的，机械的或其它的形式连接。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以是两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分，或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或 者网络设备等)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到各种等效的修改或替换，这些修改或替换都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以权利要求的保护范围为准。

Claims (10)

  1. 一种超声波闹时电路，其特征在于，包括控制器和超声波扬声器，其中：
    所述控制器的第一控制端和所述超声波扬声器的控制端连接，所述超声波扬声器的输入端接入铃声信号；
    所述控制器用于向所述超声波扬声器发送第一调制参数，所述超声波扬声器用于根据所述第一调制参数将所述铃声信号用超声波载波信号进行调制以得到混合波束信号，以及用于在预设时间节点发射所述混合波束信号。
  2. 根据权利要求1所述的超声波闹时电路，其特征在于，所述第一调制参数包括第一预设距离，所述超声波载波信号的振幅基于所述第一预设距离确定。
  3. 根据权利要求2所述的超声波闹时电路，其特征在于，所述第一调制参数还包括预设波束角度，所述超声波载波信号的频率基于所述预设波束角度确定。
  4. 根据权利要求3所述的超声波闹时电路，其特征在于，所述超声波扬声器包括：喇叭和超声波调制器，其中：
    所述超声波调制器的输出端与所述喇叭的输入端连接，所述超声波调制器的控制端为所述超声波扬声器的控制端，所述超声波调制器的输入端为所述超声波扬声器的输入端；
    所述控制器用于向所述超声波调制器发送所述第一调制参数，所述超声波调制器用于根据所述第一调制参数将所述铃声信号用所述超声波载波信号进行调制以得到调制信号，以及用于在所述预设时间节点将所述调制信号输出至所述喇叭，所述喇叭用于根据所述调制信号发射所述混合波束信号。
  5. 根据权利要求4所述的超声波闹时电路，其特征在于，所述超声波闹时 电路还包括输入装置，所述输入装置的发送端与所述控制器的第一接收端连接，所述输入装置用于设置所述预设时间节点和所述预设距离。
  6. 根据权利要求5所述的超声波闹时电路，其特征在于，所述电路还包括摄像头和马达，所述摄像头的发送端与所述控制器的第二接收端连接，所述马达的第一控制端与所述控制器的第二控制端连接，所述喇叭的基座与所述马达的第二控制端连接；
    所述摄像头用于检测预设范围内是否存在目标用户，所述摄像头还用于在检测到所述预设范围内存在所述目标用户时，拍摄所述包含目标用户图像的图片并将所述图片发送至所述控制器，所述控制器用于根据所述目标用户图像在所述图片中的位置确定所述喇叭需要旋转的目标角度以及所述喇叭需要旋转的目标方向，以及用于控制所述马达按照所述目标角度以及所述目标方向旋转所述喇叭。
  7. 根据权利要求6所述的超声波闹时电路，其特征在于，所述控制器还用于根据所述目标用户图像确定所述目标用户的状态，所述控制器还用于在所述控制器确定所述目标用户处于非睡眠状态时，控制所述喇叭停止发射所述混合波束信号。
  8. 根据权利要求7所述的超声波闹时电路，其特征在于，所述控制器还用于在所述控制器确定所述目标用户处于睡眠状态时，向所述超声波调制器发送第二调制参数，所述第二调制参数包括第二预设距离，所述第二预设距离大于所述第一预设距离。
  9. 一种终端设备，其特征在于，包括如权利要求1-8任一项所述的超声波闹时电路，其中，所述超声波闹时电路包括控制器和超声波扬声器，所述控制器包括处理器和存储器，所述存储器用于存储计算机程序，所述计算机程序包括程序指令，所述处理器被配置用于调用所述程序指令，执行如下步骤：
    向所述超声波扬声器发送所述第一调制参数和所述第二调制参数；
    根据所述目标用户图像在所述图片中的位置确定所述喇叭需要旋转的目标角度以及所述喇叭需要旋转的目标方向；
    根据所述目标用户图像确定所述目标用户的状态。
  10. 一种计算机可读存储介质，其特征在于，所述计算机存储介质存储有计算机程序，所述计算机程序包括程序指令，所述程序指令被所述处理器执行时使所述处理器执行如权利要求9所述的步骤。
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