CN114915869A - Bluetooth device and Bluetooth headset - Google Patents

Bluetooth device and Bluetooth headset Download PDF

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Publication number
CN114915869A
CN114915869A CN202110181549.5A CN202110181549A CN114915869A CN 114915869 A CN114915869 A CN 114915869A CN 202110181549 A CN202110181549 A CN 202110181549A CN 114915869 A CN114915869 A CN 114915869A
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CN
China
Prior art keywords
bluetooth
current
power supply
communication module
signal
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110181549.5A
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Chinese (zh)
Inventor
孙国祯
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Guangdong Oppo Mobile Telecommunications Corp Ltd filed Critical Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority to CN202110181549.5A priority Critical patent/CN114915869A/en
Priority to PCT/CN2022/071301 priority patent/WO2022170903A1/en
Publication of CN114915869A publication Critical patent/CN114915869A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1083—Reduction of ambient noise
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B15/00—Suppression or limitation of noise or interference
    • H04B15/005—Reducing noise, e.g. humm, from the supply
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2420/00—Details of connection covered by H04R, not provided for in its groups
    • H04R2420/07—Applications of wireless loudspeakers or wireless microphones
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The embodiment of the application provides a Bluetooth device and a Bluetooth headset, wherein the Bluetooth device comprises a Bluetooth communication module, a power supply and an electrical appliance, the power supply is configured to supply current to the Bluetooth communication module and the electrical appliance, when the Bluetooth communication module transmits a Bluetooth signal, the electrical appliance is in a first state, and the power supply outputs a first current; when the Bluetooth communication module does not transmit the Bluetooth signal, the electric appliance is in a second state, and the power supply outputs a second current; the difference between the first current and the second current is within a first preset range. The embodiment of the application can ensure that the power supply outputs current more stably, and reduce electromagnetic energy emitted by the power supply caused by larger current jitter, thereby effectively reducing the noise of the Bluetooth equipment.

Description

Bluetooth device and Bluetooth headset
Technical Field
The application relates to the technical field of electronics, in particular to a Bluetooth device and a Bluetooth headset.
Background
In recent years, the development of wireless technology brings great convenience to the life of people. Among them, various bluetooth products using bluetooth technology are more popular among people. Bluetooth products, especially Bluetooth headsets, often generate noise, such as current sound, during use, thereby affecting the user experience.
Disclosure of Invention
The embodiment of the application provides a Bluetooth device and a Bluetooth headset, and electromagnetic field radiation of a power supply in the Bluetooth device can be effectively reduced.
In a first aspect, an embodiment of the present application provides a bluetooth device, including a bluetooth communication module, a power supply and an electrical appliance, where the power supply is configured to supply current to the bluetooth communication module and the electrical appliance, and when the bluetooth communication module transmits a bluetooth signal, the electrical appliance is in a first state, and the power supply outputs a first current; when the Bluetooth communication module does not transmit the Bluetooth signal, the electric appliance is in a second state, and the power supply outputs a second current; the difference between the first current and the second current is within a first preset range.
In a second aspect, an embodiment of the present application provides a bluetooth headset, including a bluetooth communication module, a power supply, an electrical appliance and a speaker, where the power supply is configured to provide current for the bluetooth communication module, the electrical appliance and the speaker, and when the bluetooth communication module establishes a bluetooth connection, in a whole or partial process, the bluetooth communication module transmits a bluetooth signal, the power supply does not provide current for the electrical appliance or provide a fourth current for the electrical appliance, and when the bluetooth communication module does not transmit a bluetooth signal, the power supply provides a preset current for the electrical appliance, so that the current output by the power supply is controlled within a second preset range.
In a third aspect, an embodiment of the present application provides a method for controlling a bluetooth device, where the bluetooth device includes a power supply and an electrical appliance, and the method includes:
when the Bluetooth signal is transmitted, the electric appliance is controlled to be in a first state, and the power supply outputs a first current;
and when the Bluetooth signal is not transmitted, controlling the electric appliance to be in a second state, outputting a second current by the power supply, and keeping the difference value of the first current and the second current within a first preset range.
This application embodiment is through addding electrical apparatus, through being in different states with electrical apparatus in control under bluetooth communication module's different situation for the power can output difference value respectively at first electric current and the second electric current of predetermineeing the within range under the state that electrical apparatus corresponds, makes the more stable output current of power, reduces the electromagnetic energy that the great shake of electric current leads to the power to give off, thereby can effectively reduce bluetooth equipment's noise.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic view of a first structure of a bluetooth device according to an embodiment of the present application.
Fig. 2 is a timing control diagram provided in an embodiment of the present application.
Fig. 3 is a schematic diagram of a second structure of a bluetooth device according to an embodiment of the present application.
Fig. 4 is a schematic structural diagram of a third bluetooth device according to an embodiment of the present application.
Fig. 5 is a schematic diagram of a fourth structure of a bluetooth device according to an embodiment of the present application.
Fig. 6 is a schematic diagram of a fifth structure of a bluetooth device according to an embodiment of the present application.
Fig. 7 is a sixth structural schematic diagram of a bluetooth device according to an embodiment of the present application.
Fig. 8 is an application scenario diagram of a bluetooth device according to an embodiment of the present application.
Fig. 9 is a flowchart illustrating a method for controlling a bluetooth device according to an embodiment of the present application.
Fig. 10 is a schematic structural diagram of a bluetooth headset according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The embodiment of the present application provides a bluetooth device, which may be any device that may use bluetooth technology, for example, the bluetooth device may be a bluetooth headset, a bluetooth speaker, a bluetooth mouse, a bluetooth watch, a cellular phone that may use bluetooth technology, a household appliance (such as a television, a projector, an electric cooker, etc.) that may use bluetooth technology, or other products that may use bluetooth technology. The following description will specifically take a bluetooth headset as an example.
As shown in fig. 1, fig. 1 is a schematic view of a first structure of a bluetooth device according to an embodiment of the present application. The bluetooth device 20 may include a power supply 200, a bluetooth communication module 400, and an electrical appliance 600, wherein the power supply 200 may provide power for the operation of the bluetooth communication module 400 and the electrical appliance 600; the bluetooth communication module 400 may be used to transmit bluetooth signals to interact with other devices through the bluetooth signals.
In the process of bluetooth communication, the bluetooth communication module 400 may transmit a bluetooth signal discontinuously, while the power consumption is relatively increased when transmitting the bluetooth signal and is relatively decreased when not transmitting the bluetooth signal, which may cause the current output by the power supply to fluctuate.
It should be noted that the source of the current sound mainly includes interference of electronic components to the horn, and the electronic components may be power inductors, batteries, and the like. In this application, the power supply includes a battery, and may also include a power management circuit, and the power management circuit may also be integrated in the bluetooth communication module, or may be separately provided, which is not limited to this.
This application embodiment sets forth from actual conditions, add in bluetooth device 20 and use electrical apparatus 600, use electrical apparatus 600 can be any consumer, as long as it can make power 200 for its output electric energy can, for example can be single resistance with electrical apparatus 600, resistance is compared in the correlation technique at the outside winding shielding material of battery, and its volume is less, can reduce to take up with electrical apparatus 600 to bluetooth device 20's inner space for bluetooth device 20 can be more miniaturized. Of course, the electrical consumer 600 may also be any circuit capable of consuming electric energy, which is composed of one or more of resistors, inductors, capacitors, transistors, amplifiers, or other electronic components.
The power supply 200 is configured to supply current to the bluetooth communication module 400 and the electrical appliance 600, when the bluetooth communication module 400 transmits a bluetooth signal, the electrical appliance 600 is in a first state, and the power supply 200 outputs a first current; when the bluetooth communication module 400 does not transmit the bluetooth signal, the electrical appliance 600 is in the second state, and the power supply 200 outputs a second current; the difference between the first current and the second current is within a first predetermined range.
The first preset range is a preset range, and may be set according to the electromagnetic radiation condition generated by the power supply 200, or may be set according to the current sound condition, so that when the difference between the first current and the second current is in the first preset range, compared with the case where the electrical appliance 600 is not provided, the electromagnetic radiation of the power supply 200 may be reduced, thereby reducing the noise of the bluetooth device 20.
In the embodiment of the application, the power supply 200 can output current outwards when transmitting the bluetooth signal and not transmitting the bluetooth signal, and the output current is relatively stable, so that the electromagnetic field radiation intensity of the power supply 200 can be effectively reduced.
For example, in the first state, the electrical appliance 600 may be controlled to be disconnected from the power supply 200, and at this time, the power supply 200 does not output current for the electrical appliance 600; in the second state, the electrical consumer 600 and the power supply 200 are controlled to be kept in conduction, and at this time, the power supply 200 may output current for the electrical consumer 600. It is understood that when the bluetooth communication module 400 transmits the bluetooth signal, the power supply 200 provides current to it, but does not provide current to the electrical appliance 600; when the bluetooth communication module 400 does not transmit the bluetooth signal, at this time, compared with the process of transmitting the bluetooth signal, the bluetooth communication module 400 consumes less current to the power supply 200, so that the current output by the power supply 200 greatly jitters, and the power supply 200 emits larger electromagnetic radiation under the condition of large current jitter amplitude. However, in the embodiment of the present application, when the bluetooth communication module 400 does not transmit the bluetooth signal, the power supply 200 is kept connected to the electrical appliance 600, and the electrical appliance 600 may consume a part of the current of the power supply 200, so as to reduce the sudden decrease of the current consumed when the bluetooth communication module 400 does not transmit the bluetooth signal, and further reduce the electromagnetic radiation intensity of the power supply 200.
For example, the value of the first current and the value of the second current may be equal, as described in detail with reference to fig. 2, and fig. 2 is a timing control diagram provided in the embodiment of the present application. At 0-t1, the bluetooth communication module 400 can transmit bluetooth signals, the power supply 200 outputs power to the bluetooth communication module 400, the first current output by the power supply 200 is I1, the electrical appliance 600 is kept disconnected from the power supply 200, and the current provided by the power supply 200 for the electrical appliance is 0 or a smaller value. At t1-t2, the Bluetooth communication module 400 may not transmit a Bluetooth signal, and the power supply 200 supplies the Bluetooth communication module 400 with a current of 0 or less. And keeps the electrical appliance 600 and the power supply 200 conducted, at this time, the second current output by the power supply 200 is I2.
In the embodiment of the present application, the first current I1 output by the power supply 200 may have a value equal to the second current I2 output by the power supply 200. Therefore, in the time period 0-t2, the power supply I2 consumed by the power supply 200 is I1, that is, the power supply 200 can stably output the current I3 in the preset time period, and there is no occurrence of large electromagnetic radiation generated by the power supply 200 due to current output in some time periods and no current output in some time periods, which causes large noise, such as current sound. It can be understood that, in the embodiment of the present application, by additionally providing the electrical appliance 600 and controlling the electrical appliance 600 to be in different states under different conditions of the bluetooth communication module 400, the power supply 200 may respectively output the first current and the second current having the difference value within the first preset range in the corresponding state of the electrical appliance 600, so as to effectively reduce the electromagnetic field radiation intensity of the power supply 200 in the bluetooth device 20, thereby reducing or avoiding noise caused by fluctuation of the power supply output current and affecting the use of a user. It should be noted that 0-t1 and t1-t2 are only two time periods taken from the time sequence for specific description, and the operations of the other two adjacent time periods are the same as the operations of the two time periods 0-t1 and t1-t 2.
It should be further noted that in the embodiment of the present application, in the first state, the value of the first current I1 consumed by the power supply 200 may not be equal to the value of the second current I2 consumed by the power supply 200 in the second state, for example, the first current I1 may be smaller or larger than the second current I2, and at this time, the power supply 200 emits a portion of electromagnetic radiation, but the electromagnetic radiation of the power supply 200 may be controlled to be at a lower level by controlling the difference between the first current I1 and the second current I2, so that the first current I1 and the second current I2 are within a first preset range. Only if the value of the first current I1 consumed by the power supply 200 is equal to the value of the second current I2 consumed by the power supply 200, the electromagnetic radiation of the power supply 200 is better controlled.
It can be understood that, it is a more ideal state that the first current is equal to the second current, and in practical applications, the difference between the first current output by the power supply when transmitting the bluetooth signal and the second current output by the power supply when not transmitting the bluetooth signal may be controlled within a first preset range (including the case that the first current is equal to the second current, and also including the case that the first current is unequal to the second current) by the electrical appliance, for example, it is determined through experiments that fluctuation of the power supply output current within a certain range does not cause noise (for example, current sound) to be generated by a bluetooth device (such as a bluetooth headset) or the generated noise is smaller than a preset threshold, so that the use of a user is not affected, for example, it is not enough for the user to sense the current sound, so that the certain range can be used as the first preset range, or the first preset range is determined according to the certain range.
It should be noted that the relationship between power supply 200 and electrical consumer 600 is not limited to this. For example, in the first state, the power supply 200 may output a third current to the electrical consumer 600, and in the second state, the power supply 200 may output a fourth current to the electrical consumer 600, so that a difference between the first current and the second current is within a first preset range. It can be understood that, when the bluetooth communication module 400 transmits a bluetooth signal and does not transmit a bluetooth signal, the power supply 200 and the electrical appliance 600 are always kept on, so that the power supply 200 outputs current to the electrical appliance 600 in both states, and the difference between the first current output by the power supply 200 in the first state and the second current output by the power supply 200 in the second state is within the first preset range by controlling the magnitudes of the currents output in both states (i.e., the magnitudes of the third current and the fourth current), so as to achieve the purpose of reducing the electromagnetic radiation intensity of the power supply 200.
In this embodiment, the control relationship between the power supply 200, the bluetooth communication module 400 and the electrical appliance 600 may be physically controlled by using a switch or other hardware, or the power supply 200 may always maintain the electrical connection with the bluetooth communication module 400 and the electrical appliance 600 on the hardware, and then control the power supply 200 to supply power or not supply power to the bluetooth communication module 400 in a software manner or other manners, and/or control the power supply 200 to supply power or not supply power to the electrical appliance 600.
In this embodiment, the bluetooth signal may be a signal transmitted by the bluetooth communication module 400 during a part or all of the process of establishing the bluetooth connection by the bluetooth communication module 400. The bluetooth connection establishment may be the first connection establishment with other bluetooth devices, the re-establishment of a bluetooth connection (reconnection) with a certain bluetooth device, or the re-pairing connection process after the bluetooth connection information is erased. Generally, during establishing a bluetooth connection, a bluetooth device may be in a paging page, a page scan, an inquiry scan, etc., and may be switched between different states. The inventor researches and finds that particularly in a paging or inquiry state, a bluetooth signal, such as an ID packet, needs to be sent in each frequency band according to a bluetooth frequency hopping protocol and waits for feedback, so that the alternation of transmitting the bluetooth signal and not transmitting the bluetooth signal becomes more frequent, and the fluctuation of the output current of a power supply caused by the alternation is increased, so that electronic devices such as a battery and an inductor can generate a large electromagnetic field, and then sensitive devices such as a loudspeaker are interfered to generate noises such as current sound. Taking a bluetooth headset as an example, if the bluetooth connection is suddenly disconnected during the use of a user, the main headset of the bluetooth headset enters a paging state to try to connect back to the mobile phone, and in the paging state, due to frequent ID packet transmission and waiting for feedback, the output current of the power supply changes greatly and frequently, so that a battery, a power inductor and the like may generate a large electromagnetic field to further interfere with a speaker and the like to generate current sound. Therefore, part or all of the process of establishing the bluetooth connection, for example, only in the paging and inquiry states, or in all bluetooth states, or the whole process of starting the bluetooth connection to establish a synchronous or asynchronous transmission link, or even the process of pairing paring, may be included, and the specific reference to the bluetooth protocol is not limited herein.
After the bluetooth communication module 400 completes the bluetooth connection, the electrical appliance 600 may be kept in the third state, so that the power supply 200 does not output current for the electrical appliance 600 or outputs the seventh current for the electrical appliance 600, so that the electrical appliance 600 does not consume electric energy or consumes less electric energy when the bluetooth communication module 400 is in the connected state, the output current of the power supply 200 is controlled, and current noise caused thereby is reduced. As shown in fig. 3, fig. 3 is a schematic diagram of a second structure of a bluetooth device according to an embodiment of the present application. The bluetooth communication module 400 may include a bluetooth circuit 420 and an antenna radiator 440, the bluetooth circuit 420 being configured to control the antenna radiator 440, the power supply 200, and the power consumer 600. For example, the bluetooth circuit 420 may control the antenna radiator 440 by directly or indirectly electrically connecting to it, such as controlling the antenna radiator 440 to transmit bluetooth signals, or controlling the antenna radiator 440 not to transmit bluetooth signals. The bluetooth circuit 420 may be controlled by being directly or indirectly electrically connected to the power supply 200, for example, to control the power supply 200 to supply or not supply power to various devices, and the current of the power supply.
The bluetooth circuit 420 may be integrated into one chip, or different portions of the bluetooth circuit 420 may be integrated into different chips or other package structures. For example, as shown in fig. 4, fig. 4 is a schematic diagram of a third structure of a bluetooth device according to the embodiment of the present disclosure, a bluetooth circuit 420 may include a bluetooth main control circuit 422 and a radio frequency circuit 424, the bluetooth main control circuit 422 is a main control center with a bluetooth function, the bluetooth main control circuit 422 may control the radio frequency circuit 424 in a manner of being directly electrically connected or indirectly connected to the radio frequency circuit 424, the radio frequency circuit 422 may be directly electrically connected to an antenna radiator 440 or indirectly electrically connected to the antenna radiator 440 through another device, and the bluetooth main control circuit 422 may control the antenna radiator 440 through the radio frequency circuit 424. The rf circuit 420 may include an rf transceiver module and a modem module, where the rf transceiver module may be configured to transceive an rf signal, and the modem module may be configured to process the rf signal to implement modulation and demodulation of the signal. The antenna radiator 440 may be disposed on an outer surface of the bluetooth device 20, or may be disposed inside the bluetooth device 20, and the antenna radiator 440 may be configured to transmit a radio frequency signal. The radio frequency signal may include a bluetooth signal, and may also include other signals, so that one antenna radiator 440 may transmit two or more signals at the same time.
Wherein, the bluetooth circuit 420 may be configured to control the electrical appliance 600 to be conducted with the power supply 200. Exemplarily, as shown in fig. 5, fig. 5 is a schematic diagram of a fourth structure of a bluetooth device according to an embodiment of the present application. The bluetooth device 20 may include a first switch 920 and a second switch 940, and the first switch 920 and the second switch 940 are single-pole single-throw switches. The bluetooth master control circuit 422 is electrically connected to the power supply 200, and the power supply 200 can provide electric energy for the operation of the bluetooth master control circuit 422. The bluetooth master control circuit 422 is electrically connected with the radio frequency circuit 424 through the first switch 920, and the bluetooth master control circuit 422 can realize the state control of the radio frequency circuit 424 by controlling the on/off control of the first switch 920. The bluetooth master control circuit 422 is electrically connected with the electrical appliance 600 through the second switch 940, and the bluetooth master control circuit 422 can realize the state control of the radio frequency circuit 424 by controlling the on/off of the second switch 940.
For example, the first switch 920 may have a first port and a second port, the first port may be connected to the rf circuit 424, and the second port may be connected to the bluetooth master control circuit 422. The bluetooth master control circuit 422 may control the communication between the radio frequency circuit 424 and the bluetooth master control circuit 422 by controlling the communication between the first port and the second port, so that the radio frequency circuit 424 may cooperate with the antenna radiator 440 to transmit a bluetooth signal; the bluetooth master control circuit 422 may control the radio frequency circuit 422 and the antenna radiator 440 not to transmit bluetooth signals by controlling the disconnection of the first port and the second port.
Certainly, the bluetooth master control circuit 422 may also keep the first switch 920 closed, and control the rf circuit 424 and/or the antenna radiator 440 to be inoperative through software or other methods, so as to achieve the purpose of not transmitting bluetooth signals.
The second switch 940 may have a third port, which may be connected with the bluetooth master control circuit 422, and a fourth port, which may be connected with the electrical instrument 600. The bluetooth master control circuit 422 can control the electric appliance 600 to be conducted with the power supply 200 through controlling the communication of the third port and the fourth port, so that the power supply 200 can output current for the electric appliance 600. The bluetooth master control circuit 422 can control the power supply 200 and the electrical appliance 600 to be non-conductive by controlling the third port and the fourth port to be non-conductive, so that the electrical appliance 600 does not consume the electric energy of the power supply 200.
Of course, the bluetooth master control circuit 422 may also keep the second switch 940 closed, and control the electric appliance 600 to consume no or little electric energy through software or other methods.
The bluetooth master control circuit 422 according to the embodiment of the present application may control the states of the first switch 920 and the second switch 940, so as to control the signal transmission state of the radio frequency circuit 424 and/or the antenna radiator 440 and the power consumption state of the electrical appliance 600. For example, the bluetooth master control circuit 422 may be configured to control the first switch 920 to be closed and the second switch 940 to be opened, and the bluetooth master control circuit 422 may be further configured to control the first switch 920 to be opened and the second switch 940 to be closed. When the first switch 920 is closed and the second switch 940 is opened, the rf circuit 424 and the antenna radiator 440 may be enabled to be in an operating state to transmit a bluetooth signal, and the electrical appliance 600 may not consume power. When the first switch 920 is turned off and the second switch 940 is turned on, the rf circuit 424 and the antenna radiator 440 may be in an idle state without transmitting bluetooth signals, and the electrical consumer 600 may consume power.
One or both of the first switch 920 and the second switch 940 shown in fig. 5 may be integrated with the bluetooth communication module 400 into a processing chip, or the bluetooth communication module 400 may be integrated with a processing chip separately, and the first switch 920 and the second switch 940 are externally connected outside the processing chip. In addition, the bluetooth communication module 400 of the embodiment of the present application may directly adopt a bluetooth chip in the bluetooth device, and may also implement the setting of the bluetooth communication module 400 by additionally adding a processing chip or a processing circuit.
It should be noted that the structure of the bluetooth device 20 according to the embodiment of the present application is not limited to this, for example, as shown in fig. 6, fig. 6 is a schematic diagram of a fifth structure of the bluetooth device according to the embodiment of the present application. The bluetooth device 20 may include only one switch, for example, the bluetooth device 20 may include only the first switch 920, and the first switch 920 may be a single-pole double-throw switch. The first switch 920 may include an input end 920a, a first output end 920b, and a second output end 920c, where the input end 920a is connected to the bluetooth master control circuit 422, the first output end 920b is connected to the rf circuit 424, and the second output end 920c is connected to the electrical appliance 600. The bluetooth master control circuit 422 may control the radio frequency circuit 424 to be in an operating state by controlling the communication between the input end 920a and the first output end 920b to transmit a bluetooth signal together with the antenna radiator 440, and at this time, the input end 920a and the second output end 920c are not communicated, so that the electrical appliance 600 does not consume the electrical energy of the power supply 200. The first output 920b is connected to the rf circuit 424, and the second output 920c is connected to the electrical consumer 600. The bluetooth master control circuit 422 may also control the connection between the input end 920a and the second output end 920c to enable the power supply 200 to output power to the electrical appliance 600, where the input end 920a and the first output end 920b are not connected and the rf circuit 424 is in an idle state and does not transmit bluetooth signals.
The first switch 920 shown in fig. 6 may be integrated with the bluetooth communication module 400 into a processing chip, or the bluetooth communication module 400 may be integrated with a processing chip separately, and the first switch 920 is externally connected to the processing chip.
In other embodiments, the power supply 200 need not be controlled by the bluetooth circuit 420, and the power supply 200 may instead control the current output of the power supply 200 according to the communication status of the bluetooth circuit 420. For example, the power supply 200 may provide no current or a first setting current to the electrical appliance 600 when it is known that the bluetooth circuit 420 transmits a bluetooth signal, and provide a second setting current to the electrical appliance 600 when it is known that the bluetooth circuit 420 does not transmit a bluetooth signal, so that the output current of the power supply 200 is within a first preset range in a part or all of the process of establishing bluetooth.
As shown in fig. 7, fig. 7 is a schematic diagram of a sixth structure of a bluetooth device according to an embodiment of the present application. The bluetooth device 20 of the embodiment of the present application may further include a sound module 800, and the sound module 800 may be configured to transmit a sound signal, for example, the sound module 800 may include a sound generation module and/or a sound collection module, and the sound generation module may convert an electrical signal into a sound signal, such as a speaker; the sound collection device may convert the sound signal into an electrical signal, such as a microphone.
It is understood that the sound module 800 in the embodiment of the present application may include only a sound emitting module, such as when the bluetooth device 20 is a bluetooth speaker, the sound module 800 may include only a speaker and not a microphone. The sound module 800 may also include only a sound collection module, such as when the bluetooth device 20 is a bluetooth sound recording device, the sound module 800 may include only a microphone and not a speaker. The sound module 800 may also include a sound generating module and a sound collecting module, for example, when the bluetooth device 20 is a wireless bluetooth headset, the wireless bluetooth headset may not only generate a sound signal, but also convert the sound signal into an electrical signal to transmit to other devices.
Wherein, the sound module 800 can be connected with the bluetooth communication module 400 to play or collect sound signals. Such as bluetooth circuitry 420, may be coupled directly or indirectly to the sound module 800, which may collect and/or play sound signals through the sound module 800. The sound module 800 is susceptible to electromagnetic noise generated by the influence of electromagnetic radiation from surrounding devices, such as the power supply 200, when transmitting sound signals, so that the user feels poor hearing. The electromagnetic radiation intensity of the power supply 200 of the embodiment of the application is low, so that the influence of the electromagnetic radiation on the sound module 800 can be reduced, the electromagnetic noise of the sound signal transmitted by the sound module 800 is reduced, and the user experience is improved.
In this embodiment of the application, the bluetooth device 20 may be a bluetooth headset 40 as shown in fig. 8, the preset device may be a mobile terminal 60 (smart phone) as shown in fig. 8, and the user may transmit a bluetooth signal by controlling the bluetooth headset 40, and establish a wireless connection with the mobile terminal 60 through the bluetooth signal, so that the bluetooth headset 40 may interact with the mobile terminal 60 (for example, the mobile terminal 60 may play audio through the bluetooth headset 40, or perform a call through the bluetooth headset 40, etc.).
It can be understood that, when the bluetooth device 20 is a bluetooth headset, the bluetooth headset further includes a wearing detection module (not shown), such as a capacitance sensor, the wearing detection module can be connected to the bluetooth communication module 400, and can send the wearing state information to the bluetooth communication module, or store the wearing state information in a storage module, so as to be acquired by the bluetooth communication module 400, and when the bluetooth headset is in the wearing state, the electrical appliance 600 is used to control noise (such as current sound) in the above manner, so as to ensure that the power consumption is controlled while the user uses the bluetooth headset.
To further understand the specific implementation process of the embodiment of the present application, the following description is made in terms of a control method of a bluetooth device.
As shown in fig. 9, fig. 9 is a schematic flowchart of a method for controlling a bluetooth device according to an embodiment of the present application, where the method for controlling the bluetooth device 20 according to the embodiment of the present application includes the following steps:
101, when transmitting bluetooth signal, controlling the electrical appliance 600 to be in the first state, and the power supply 200 outputting the first current.
102, when the bluetooth signal is not transmitted, the electrical appliance 600 is controlled to be in the second state, the power supply 200 outputs the second current, and the difference value between the second current and the first current is within the first preset range.
The bluetooth device 20 may control the electrical appliance 600 according to the transmission state of the bluetooth signal thereof. The specific control module may be the bluetooth communication module 400 described in the above-mentioned application embodiment, and may also be other control modules, such as other processing chips or other control circuits in the bluetooth device 20, but is not limited to the bluetooth communication module 400 described in the above-mentioned application embodiment. The transmission state of the bluetooth signal may be detected and obtained by the bluetooth communication module 400 of the above-mentioned application embodiment, or may be obtained by another module (such as another module independent from the bluetooth communication module 400) and then sent to the bluetooth communication module 400. The bluetooth device 20, knowing that it is transmitting the bluetooth signal, controls the electrical appliance 600 to be in the first state, and at this time, the power supply 200 may output the first current. The bluetooth device 20 knows that it is not transmitting the bluetooth signal, and controls the electrical appliance 600 to be in the second state, and at this time, the power supply 200 may output the second current, and the difference between the second current and the first current is within the first preset range. For specific descriptions of the first state, the first current and the first predetermined range, reference may be made to the related descriptions of the embodiments of the above application, and details are not repeated herein.
Wherein, step 101 may include: when the bluetooth signal is transmitted, the electrical appliance 600 is controlled to be disconnected from the power supply 200 or the power supply 200 is controlled to output a third current to the electrical appliance 600.
Step 102 may include: when the bluetooth signal is not transmitted, controlling the electrical appliance 600 to be kept conducted with the power supply 200, or controlling the power supply 200 to output a fourth current to the electrical appliance 600.
The bluetooth device 20 can control the states of the power consumer 600 and the power supply 200 through hardware control, wherein the manner of hardware control can be referred to the description of fig. 5 and fig. 6 in the above application embodiments. Of course, the bluetooth device 20 may also control the states of the electrical appliance 600 and the power supply 200 in a software control manner, and refer to the related description in the above application embodiments.
Step 102 may be followed by: 103, after the bluetooth connection is completed, keeping the electric appliance in the third state, so that the power supply does not output current or seventh current for the electric appliance.
In the embodiment of the present application, the bluetooth connection described above includes a part or all of the process of establishing the bluetooth connection. The establishing of the bluetooth connection may be establishing connection with other bluetooth devices for the first time, reestablishing bluetooth connection (reconnection) with a certain bluetooth device, or performing a connection process of pairing again after the bluetooth connection information is erased. Generally, during establishing a bluetooth connection, a bluetooth device may be in a paging page, a page scan, an inquiry scan, etc., and may be switched between different states. The inventor researches and finds that particularly in a paging or inquiry state, a bluetooth signal, such as an ID packet, needs to be sent in each frequency band according to a bluetooth frequency hopping protocol and waits for feedback, so that the alternation of transmitting the bluetooth signal and not transmitting the bluetooth signal becomes more frequent, and the fluctuation of the output current of a power supply caused by the alternation is increased, so that electronic devices such as a battery and an inductor can generate a large electromagnetic field, and then sensitive devices such as a loudspeaker are interfered to generate noises such as current sound. Taking a bluetooth headset as an example, if the bluetooth connection is suddenly disconnected during the use of a user, the main headset of the bluetooth headset enters a paging state to try to connect back to the mobile phone, and in the paging state, due to frequent ID packet transmission and waiting for feedback, the output current of the power supply changes greatly and frequently, so that a battery, a power inductor and the like may generate a large electromagnetic field to further interfere with a speaker and the like to generate current sound. Therefore, part or all of the process of establishing the bluetooth connection, for example, only in the paging and inquiry states, or in all bluetooth states, or the whole process of starting the bluetooth connection to establish a synchronous or asynchronous transmission link, or even the process of pairing paring, may be included, and the specific reference to the bluetooth protocol is not limited herein.
After completing the above-mentioned bluetooth connection process, the bluetooth device 20 may control the electrical appliance 600 to be in the third state, so that the power supply 200 does not output current for the electrical appliance 600 or outputs the seventh current for the electrical appliance 600, so that the electrical appliance 600 does not consume electric energy or consumes less electric energy in the connection state of the bluetooth device 20, the output current of the power supply 200 is controlled, and the current noise caused thereby is reduced.
It is understood that when the bluetooth device 20 is a bluetooth headset, the wearing state of the bluetooth headset may be determined before the above steps are performed, and the above steps 101,102, etc. are performed when the bluetooth headset is in the wearing state, so that certain power consumption can be saved.
An embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed on a computer, the computer is caused to execute the steps in the control method of the bluetooth device as provided in this embodiment. For example, the computer program may be stored in a memory and executed by at least one processor, in which execution a flow of an embodiment of a control method of a bluetooth device as described may be included. The storage medium may be a magnetic disk, an optical disk, a Read Only Memory (ROM), a Random Access Memory (RAM), or the like.
As shown in fig. 10, fig. 10 is a schematic structural diagram of the bluetooth headset provided in this embodiment, the bluetooth headset 40 may include a bluetooth communication module 41, a power supply 42, an electrical appliance 43, and a speaker 44, the power supply 42 may be configured to supply current to the bluetooth communication module 41, the electrical appliance 43, and the speaker 44, and the current output by the power supply 42 is controlled within a second preset range by the electrical appliance 43 in all or part of the process of establishing a bluetooth connection by the bluetooth communication module 41. The process of establishing the bluetooth connection may include a backhaul process and a pairing process, or may only include a backhaul process or a pairing process. The second preset range is a preset range, and may be set according to the electromagnetic noise generated by the speaker 44, so that when the current output by the power supply 42 is within the second preset range, the electromagnetic noise generated by the speaker 44 is within the preset interval, and the hearing experience of the user is improved. The second predetermined range may be the same as the first predetermined range or different from the first predetermined range.
Illustratively, when the current output by the power supply 42 is controlled to be within the second predetermined range, the noise generated by the equivalent magnetic field generated by the power supply 42 to the speaker 44 is within a third predetermined range. The third predetermined range may be a predetermined range, which may be set to a degree that the equivalent magnetic field generated by the power supply 42 may not be detected by the user when the noise generated by the speaker 44 is within the third predetermined range. Such as to be controlled in a range below decibels audible to the user's ear.
Wherein, in the whole or partial process of establishing the bluetooth connection by the bluetooth communication module 41, controlling the current output by the power supply 42 in the second preset range by using the electrical appliance 43 may include: the power supply 42 does not supply current to the electric appliance 43 when the bluetooth communication module 41 transmits the bluetooth signal, and the power supply 42 supplies preset current to the electric appliance 43 when the bluetooth communication module 41 does not transmit the bluetooth signal. It will be appreciated that when the bluetooth communication module 41 transmits a bluetooth signal, the power supply 42 will supply current to it, but not to the consumer 43; when the bluetooth communication module 41 does not transmit the bluetooth signal, the bluetooth communication module 41 consumes less current to the power supply 42 than during the process of transmitting the bluetooth signal, so that the current output by the power supply 42 greatly jitters, and the power supply 42 emits larger electromagnetic radiation when the current jitter amplitude is large. However, in the embodiment of the present application, when the bluetooth communication module 41 does not transmit the bluetooth signal, the power supply 200 is kept conducting with the electrical appliance 43, and the electrical appliance 43 can consume a part of the current of the power supply 42, so that the sudden drop amplitude of the current consumed when the bluetooth communication module 41 does not transmit the bluetooth signal is reduced, and the electromagnetic radiation intensity of the power supply 200 is further reduced.
Illustratively, the controlling the current output by the power supply 42 in the second preset range by the electrical appliance 43 during all or part of the bluetooth connection establishment of the bluetooth communication module 41 includes: the power supply 42 supplies a fifth current to the power consumer 43 when the bluetooth communication module 41 transmits the bluetooth signal, and the power supply 42 supplies a sixth current to the power consumer 43 when the bluetooth communication module 41 does not transmit the bluetooth signal. It can be understood that, when the bluetooth communication module 41 transmits a bluetooth signal and does not transmit a bluetooth signal, the power supply 42 and the electrical appliance 43 are always kept on, so that the power supply 42 outputs current to the electrical appliance 43 in both states, and by controlling the magnitudes of the currents output in both states (i.e. the magnitudes of the fifth current and the sixth current), noise generated by the interference of the electromagnetic field generated by the power supply 42 to the speaker 44 is in a third preset range, thereby reducing the electromagnetic noise generated by the speaker 44. It should be noted that the value of the fifth current may be the same as or different from the values of the first current and the third current in the embodiment of the above application; the value of the sixth current may be the same as or different from the values of the second current and the fourth current in the embodiment of the above application.
In the embodiment of the present application, the power supply 42 may be configured to control the speaker 44 to generate the noise by making the current output from the power supply 42 constant through the electrical appliance 43 during all or part of the bluetooth connection establishment process of the bluetooth communication module 41. For example, the value of the fifth current may be equal to that of the sixth current, and constant may also be understood as small fluctuation, so that the power supply 42 may output current stably within a preset time period, and at this time, the power supply 42 may not generate electromagnetic radiation, or the generated electromagnetic radiation may be negligible, so as to reduce the sound of the current and achieve the effect of increasing the sound signal transmitted by the speaker 44.
In the embodiment of the present application, the bluetooth signal is a signal transmitted by the bluetooth communication module 41 during a part or all of the process of establishing the bluetooth connection by the bluetooth communication module 41. The process of establishing the bluetooth connection may include a backhaul process and a pairing process, or may only include a backhaul process or a pairing process. After the bluetooth communication module 41 completes bluetooth connection, generally, due to reasons such as relatively continuous transmission of bluetooth signals, fluctuation of output current of the power supply is relatively weakened, an electromagnetic field generated by the power supply and the like is relatively weakened, interference on devices such as a loudspeaker and the like is relatively lowered, and accordingly current sound caused by the weakening is weakened, at this moment, the power supply 42 can be kept not to output current for the electrical appliance 43, so that the electrical appliance 43 does not consume electric energy in a connected state of the bluetooth communication module 41, and power consumption of the power supply 42 is reduced.
Wherein, keeping the power supply 42 not providing current for the electrical appliance 43 comprises: the power supply 42 is disconnected from the electrical consumer 43, but may be controlled in other ways, for example, by a power management circuit.
The specific structure and relationship with other devices of the bluetooth communication module 41 in this embodiment may be the same as those of the bluetooth communication module 400 in the embodiment of the present application, and specific reference may be made to the related description of the bluetooth communication module 400 in the embodiment of the present application, which is not described herein again.
The bluetooth device and the bluetooth headset provided in the embodiments of the present application are described in detail above. The principles and implementations of the present application are described herein using specific examples, which are presented only to aid in understanding the present application. Meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (16)

1. A Bluetooth device comprises a Bluetooth communication module, a power supply and an electric appliance, wherein the power supply is configured to supply current for the Bluetooth communication module and the electric appliance, when the Bluetooth communication module transmits a Bluetooth signal, the electric appliance is in a first state, and the power supply outputs a first current; when the Bluetooth communication module does not transmit the Bluetooth signal, the electric appliance is in a second state, and the power supply outputs a second current; the difference between the first current and the second current is within a first preset range.
2. The bluetooth device according to claim 1, wherein in the first state, the consumer is disconnected from the power supply; and in the second state, the electrical appliance is kept conducted with the power supply.
3. The bluetooth device according to claim 1, wherein in the first state, the power supply outputs a third current to the consumer, and in the second state, the power supply outputs a fourth current to the consumer, so that a difference between the first current and the second current is within the first preset range.
4. The bluetooth device according to claim 1, wherein the bluetooth signal is a signal transmitted by the bluetooth communication module during a part or all of the process of establishing the bluetooth connection by the bluetooth communication module.
5. The bluetooth device according to claim 2, wherein the first current is equal to the second current.
6. The Bluetooth device of any one of claims 1 to 5, wherein the power supply is configured to maintain the appliance in a third state after the Bluetooth communication module completes the Bluetooth connection, such that the power supply does not output current for the appliance or outputs a seventh current.
7. The bluetooth device of claim 1, wherein the bluetooth device comprises a sound module, and if the bluetooth device is a bluetooth headset, the sound module comprises a speaker, the speaker is connected to the bluetooth communication module, and the speaker is configured to play a sound signal.
8. The bluetooth device according to claim 7, wherein the bluetooth communication module comprises a bluetooth circuit and an antenna radiator, and the bluetooth circuit is electrically connected to the antenna radiator, the power supply, the consumer, and the speaker, respectively.
9. The bluetooth device according to claim 8, wherein the bluetooth circuit is configured to control the conduction of the power supply to the power consumer; or the power supply controls the current output of the power supply according to the communication condition of the Bluetooth circuit.
10. The bluetooth device of claim 8, wherein the bluetooth circuitry comprises bluetooth master circuitry and radio frequency circuitry, the bluetooth master circuitry being electrically connected to the power supply; the Bluetooth master control circuit is also connected with the electric appliance to control the current consumption of the electric appliance; the Bluetooth master control circuit is connected with the antenna radiator through the radio frequency circuit so as to receive and transmit Bluetooth signals through the radio frequency circuit and the antenna radiator.
11. The utility model provides a bluetooth headset, its characterized in that includes bluetooth communication module, power, uses electrical apparatus and speaker, the power is configured to can for bluetooth communication module, uses electrical apparatus and speaker to provide the electric current, and in bluetooth communication module establishes the whole or partial in-process of bluetooth connection, when bluetooth communication module transmits the bluetooth signal, the power does not for electrical apparatus provides the electric current or for electrical apparatus provides the fourth electric current, and when bluetooth communication module does not transmit the bluetooth signal, the power is for electrical apparatus provides the predetermined electric current, so that the electric current that the power was exported is controlled in second predetermined within range.
12. The bluetooth headset according to claim 11, wherein when the current outputted from the power supply is controlled to be within a second preset range, the noise generated by the bluetooth headset is in a third preset range.
13. The bluetooth headset according to claim 11, wherein the power supply is configured to control the noise generated by the bluetooth headset by outputting a current to the consumer such that the current output by the power supply is constant during all or part of the bluetooth connection established by the bluetooth communication module.
14. The bluetooth headset of any of claims 11 to 13, wherein the power supply is configured to keep the power supply from supplying current to the consumer after the bluetooth communication module completes the bluetooth connection.
15. The bluetooth headset of claim 14, wherein the keeping the power supply from supplying current to the consumer comprises: and disconnecting the power supply to the electrical appliance.
16. A method of controlling a bluetooth device, the bluetooth device including a power source and an appliance, the method comprising:
when a Bluetooth signal is transmitted, the electric appliance is controlled to be in a first state, and the power supply outputs a first current;
and when the Bluetooth signal is not transmitted, controlling the electrical appliance to be in a second state, outputting a second current by the power supply, and enabling the difference value of the first current and the second current to be within a first preset range.
CN202110181549.5A 2021-02-09 2021-02-09 Bluetooth device and Bluetooth headset Pending CN114915869A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202110181549.5A CN114915869A (en) 2021-02-09 2021-02-09 Bluetooth device and Bluetooth headset
PCT/CN2022/071301 WO2022170903A1 (en) 2021-02-09 2022-01-11 Bluetooth device, bluetooth earphone, and control method for bluetooth device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110181549.5A CN114915869A (en) 2021-02-09 2021-02-09 Bluetooth device and Bluetooth headset

Publications (1)

Publication Number Publication Date
CN114915869A true CN114915869A (en) 2022-08-16

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110181549.5A Pending CN114915869A (en) 2021-02-09 2021-02-09 Bluetooth device and Bluetooth headset

Country Status (1)

Country Link
CN (1) CN114915869A (en)

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