TWS Bluetooth earphone

Abstract

The utility model discloses a TWS Bluetooth earphone, comprising an earphone body and an earphone charging bin, the earphone charging bin is used for accommodating the earphone body and charging the earphone body, and a first Bluetooth main control chip is arranged in the earphone charging bin. The first motion detection module and the first sound production module are connected with the first Bluetooth main control chip; the earphone body comprises a second Bluetooth main control chip, a second motion detection module and a second sound production module, wherein the second motion detection module and the second sound production module are connected with the second Bluetooth main control chip. And the first Bluetooth main control chip and the second Bluetooth main control chip are respectively connected with an intelligent terminal in a Find My network. Compared with the prior art, the positioning precision of the earphone and the user experience are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of bluetooth earphone, especially a TWS bluetooth earphone. BACKGROUND

[0002] With the popularity of wireless earphones, earphone loss becomes a problem faced by many users. In order to solve this problem, more and more earphones begin to use positioning technology, such as Bluetooth, Wi-Fi, GPS and UWB. However, these technologies have their own shortcomings, Bluetooth positioning range is limited, GPS and Wi-Fi power consumption is high, UWB cost is expensive, and there is a problem of not accurate enough positioning. SUMMARY

[0003] The main purpose of the utility model is to provide a TWS bluetooth earphone, aiming at improving the positioning accuracy of earphone.

[0004] In order to achieve the above purpose, the utility model provides a TWS bluetooth earphone, including earphone body and earphone charging bin, the earphone charging bin is used for accomodating the earphone body and charging the earphone body, first bluetooth master control chip is arranged in the earphone charging bin, first motion detection module, first sound production module connected with the first bluetooth master control chip;

[0005] The earphone body includes a second bluetooth master control chip, a second motion detection module and a second sound production module connected with the second bluetooth master control chip.

[0006] The first bluetooth master control chip and the second bluetooth master control chip are connected with the intelligent terminal in Find My network respectively.

[0007] The further technical scheme of the utility model is that the model number of the first bluetooth master control chip is JL7012F.

[0008] The further technical scheme of the utility model is that the first motion detection module and the second motion detection module all adopt SC7A20E chip, pin 1 of the first motion detection module is grounded, pin 2 of the first motion detection module is connected with pin 10 of the first bluetooth master control chip, pin 3, pin 7 and pin 11 of the first motion detection module are connected with pin 6 of the first bluetooth master control chip, pin 5 of the first motion detection module is connected with pin 17 of the first bluetooth master control chip, pin 8 and pin 9 of the first motion detection module are grounded, and pin 12 of the first motion detection module is connected with pin 11 of the first bluetooth master control chip.

[0009] The further technical scheme of the utility model discloses, the first sound production module includes diode D3, resistance R30, resistance R31 and MOS tube Q5, one end of resistance R30 is connected with the pin 33 of the first bluetooth master control chip, the other end is connected with one end of resistance R31, the base of MOS tube Q5, the other end of resistance R30 and the emitter of MOS tube Q5 are grounded, the collector of MOS tube Q5 is connected with the anode of diode D3 and BUZZ-, the pin of diode D3 is connected with VBAT and BUZZ+.

[0010] The further technical scheme of the utility model discloses, the earphone compartment still includes the PMU module, storage module, hall module, display and touch module, first button module with the first bluetooth master control chip is connected.

[0011] The further technical scheme of the utility model discloses, the model of the second bluetooth master control chip is JL7003D.

[0012] The further technical scheme of the utility model discloses, the pin 1, pin 4, pin 8 and pin 9 of the second motion detection module are grounded, the pin 2 of the second motion detection module is connected with the pin 14 of the second bluetooth master control chip, the pin 3, pin 7 and pin 11 of the second motion detection module are connected with the pin 2 of the second bluetooth master control chip, the pin 5 of the second motion detection module is connected with the pin 10 of the second bluetooth chip, and the pin 12 of the second motion detection module is connected with the pin 15 of the second bluetooth master control chip.

[0013] The further technical scheme of the utility model discloses, the earphone body still includes the charging module, second button module, indicator light module, MIC module with the second bluetooth chip is connected.

[0014] The utility model discloses TWS bluetooth earphone's beneficial effect is:

[0015] The utility model discloses through above -mentioned technical scheme, including earphone body and earphone charging compartment, the earphone charging compartment is used for accomodating earphone body and charges for earphone body, be provided with the first bluetooth master control chip in the earphone charging compartment, with the first motion detection module, first sound production module of first bluetooth master control chip is connected, the earphone body includes the second bluetooth master control chip, with the second motion detection module and second sound production module of second bluetooth master control chip is connected, the first bluetooth master control chip and the second bluetooth master control chip are connected with the intelligent terminal in Find My network respectively, and the earphone positioning precision and user experience have been improved. ACCURACY

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the description of the embodiments or the prior art will be briefly introduced as follows. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative labor.

[0017] Figure 1 is a pairing process schematic diagram of the TWS Bluetooth earphone and the Apple mobile phone;

[0018] Figure 2 is a positioning function process schematic diagram of the Apple mobile phone;

[0019] Figure 3 is a system block diagram of the earphone charging bin;

[0020] Figure 4 is a circuit schematic diagram of the first Bluetooth master control chip;

[0021] Figure 5 is a circuit schematic diagram of the first motion detection module;

[0022] Figure 6 is a circuit schematic diagram of the first sound production module;

[0023] Figure 7 is a circuit schematic diagram of the PMU module;

[0024] Figure 8 is a circuit schematic diagram of the storage module;

[0025] Figure 9 is a circuit schematic diagram of the Hall module;

[0026] Figure 10 is a circuit schematic diagram of the display and touch module;

[0027] Figure 11 is a circuit schematic diagram of the first key module;

[0028] Figure 12 is a system block diagram of the earphone body;

[0029] Figure 13 is a circuit schematic diagram of the second Bluetooth master control chip;

[0030] Figure 14 is a circuit schematic diagram of the second motion detection module;

[0031] Figure 15 is a circuit schematic diagram of the second sound production module;

[0032] Figure 16 is a circuit schematic diagram of the charging module;

[0033] Figure 17 is a circuit schematic diagram of the second button module;

[0034] Figure 18 is a circuit schematic diagram of the indicator light module;

[0035] Figure 19 is a circuit schematic diagram of the MIC module.

[0036] The implementation, functional features and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0038] The utility model provides a kind of TWS Bluetooth headset, the utility model is mainly based on the Find My technology of apple to improve the positioning accuracy of Bluetooth headset.

[0039] Find My technology can accurately locate the earphone in a wide range by using the vast Apple network, even beyond the Bluetooth signal range, it can also be located by the nearby Apple device. More importantly, Find My technology relies on existing Apple devices, without additional hardware support, it maintains a low cost, ensures that the earphone provides efficient positioning services while being more competitive in price. Therefore, Find My technology has become the most cost-effective solution in current earphone positioning.

[0040] Firstly, the Find My function is introduced as follows.

[0041] To use the Find My function, first need to pair the earphone or earphone charging bin master control with the Apple phone. The pairing process is as shown in Figure 1 After completing the pairing, the user can enable the positioning function, and the positioning function process of the Apple phone is as shown in Figure 2

[0042] When the earphone or earphone charging bin is lost, the Bluetooth master control will emit a Bluetooth signal at a certain time interval, which contains the identity information of the device. After receiving this signal, the surrounding Apple devices or other devices supporting Find My network and enabling the corresponding function can identify the existence of the earphone or earphone charging bin with Find My function.​

[0043] When the user looks for the earphone / charging case through the Find My application on the Apple device, the search instruction is transmitted through the Bluetooth network. After the chip receives the search instruction from the nearby Apple device, it transmits the position information and other data stored by itself to the Apple device through Bluetooth, and then the Apple device uploads the data to the iCloud server, and finally feeds back the positioning information to the user APP, helping the user to determine the approximate position of the earphone / charging case.

[0044] The utility model discloses a TWS Bluetooth earphone including earphone body and earphone charging case, the earphone charging case is used to accomodate earphone body and charges for earphone body, first bluetooth master control chip is arranged in the earphone charging case, first motion detection module, first sound production module are connected with first bluetooth master control chip.

[0045] The earphone body includes a second Bluetooth master control chip, a second motion detection module and a second sound production module connected to the second Bluetooth master control chip.

[0046] The first Bluetooth master control chip and the second Bluetooth master control chip are respectively connected to the intelligent terminal in the Find My network.

[0047] In the embodiment, the system block diagram of the earphone charging case is as shown in the figure. Figure 3

[0048] The model of the first Bluetooth master control chip is JL7012F.

[0049] The JL7012F chip is the core chip of the charging case, mainly responsible for Bluetooth connection, charging management and battery monitoring, to ensure smooth communication between the earphone and the charging case. In addition, the JL7012F chip also cooperates with Hall switch, SD NAND flash, LCD screen, acceleration sensor and TP touch screen and other elements to realize the intelligentization and efficient operation of the earphone charging case. The circuit is as shown in the figure. Figure 4

[0050] The first motion detection module and the second motion detection module both adopt SC7A20E chip.

[0051] ​​The earphone charging bin is provided with the first motion detection module, that is, the acceleration sensor. The Find My protocol designs a motion detection function. When someone's Find My device is mixed into your personal belongings and tracked for more than a certain time (3 days) in a separated state (that is, the device is away from the owner's device), the device will automatically start the acceleration sensor (gsensor) to detect whether movement occurs. Once movement is detected, the device will emit a sound to remind you that you are being tracked by the Find My device. Conversely, this function can also detect whether your device is secretly carried by others. The circuit is as shown in Figure 5 .

[0052] Pin 1 of the first motion detection module is grounded, pin 2 of the first motion detection module is connected to pin 10 of the first Bluetooth master chip, pin 3, pin 7 and pin 11 of the first motion detection module are connected to pin 6 of the first Bluetooth master chip; pin 5 of the first motion detection module is connected to pin 17 of the first Bluetooth master chip; pin 8 and pin 9 of the first motion detection module are grounded; pin 12 of the first motion detection module is connected to pin 11 of the first Bluetooth master chip.

[0053] In this embodiment, the earphone charging bin is provided with a buzzer, that is, the first sound generating module, which can emit a sound through the mobile phone control when the earphone bin is lost, helping the user to quickly locate the device. This function greatly improves the recovery efficiency of the earphone charging bin and effectively avoids the inconvenience caused by the loss of the device. The circuit is as shown in Figure 6 .

[0054] The first sound generating module includes a diode D3, a resistor R30, a resistor R31 and a MOS tube Q5. One end of the resistor R30 is connected to pin 33 of the first Bluetooth master chip, the other end is connected to one end of the resistor R31 and the base of the MOS tube Q5, the other end of the resistor R30 and the emitter of the MOS tube Q5 are grounded, the collector of the MOS tube Q5 is connected to the anode of the diode D3 and BUZZ-, and the pin of the diode D3 is connected to VBAT and BUZZ+.

[0055] Further, in this embodiment, the earphone bin further includes a PMU module, a storage module, a Hall module, a display and touch module, and a first key module connected with the first Bluetooth master chip.

[0056] The PMU module adopts AC982A chip, which is a battery management chip responsible for monitoring and optimizing the charging process, ensuring safe and efficient charging of the battery, and preventing overcharging, over-discharging and other problems. In the earphone charging compartment, AC982A communicates with JL7012F master chip through I2C protocol, and transmits real-time battery voltage, capacity and other information, helping JL7012F to intelligently adjust device functions according to battery status, such as starting power saving mode or adjusting charging strategy, to prolong battery life and optimize charging efficiency. The cooperation of the two ensures the stability and long-term operation of the earphone charging compartment. The circuit is shown in Figure 7 .

[0057] In this embodiment, the storage module uses SD NAND flash as local song storage. It allows users to store music files directly in the earphone, enabling offline playback and avoiding dependence on external devices or networks. SD NAND has high read and write speed, enabling fast loading and playback of music, while its large capacity and high durability support a large number of high-quality audio files, ensuring the stability and performance of the earphone during long-term use. In addition, the low-power feature of SD NAND helps to extend the battery life of the earphone and improve user experience. The circuit is shown in Figure 8 .

[0058] In this embodiment, the Hall module, i.e. Hall switch, is used for charging compartment detection, which detects whether the earphone is correctly placed in the compartment by sensing the change of the magnetic field of the charging compartment. When the earphone is placed in the charging compartment, the Hall switch will sense the change of the magnetic field, automatically triggering the switching action of the circuit in the compartment, ensuring that the charging function starts to work and the earphone starts to charge; when the earphone is taken out of the charging compartment, the Hall switch detects the change of the magnetic field again, triggering the charging to stop or enter standby mode. This not only ensures the automation and precise control of earphone charging, but also avoids human operation errors, improving the intelligence and convenience of the charging compartment. The circuit is shown in Figure 9 .

[0059] In this embodiment, the display and touch module adopts LCD screen to display the working status, connection status, capacity and other information of the earphone in real time, allowing users to know the status of the earphone at any time. The TP touch screen allows users to adjust the volume, switch songs, answer calls and other control functions through touch operation. Such design not only improves the intelligence level of the earphone, but also makes the operation more convenient and intuitive, greatly optimizing the user experience. The circuit is shown in Figure 10 .

[0060] In this embodiment, when the earphone cannot normally connect to the device, cannot be charged or has other functional abnormalities, the user can reset the earphone to the factory settings by pressing the first key module reset key, clear the previous pairing record and settings, help the earphone re-establish connection with the device, and restore normal function. This function effectively improves the reliability of the earphone and the convenience of the user, providing a simple and effective solution for the user. The circuit is as shown in Figure 11 . .

[0061] In this embodiment, the system block diagram of the earphone body is as shown in Figure 12 .

[0062] The model of the second Bluetooth master control chip adopts JL7003D.

[0063] JL7003D is the master control chip inside the earphone body, mainly in audio decoding, Bluetooth connection, motion detection and battery management and other aspects. It is responsible for ensuring the sound quality performance and stable Bluetooth pairing of the earphone, and supports Find My function, helping the user to locate the device through sound when the earphone is lost. In addition, JL7003D also has a built-in charging management circuit, which automatically controls the earphone charging process, prevents overcharging or overdischarging, prolongs the service life of the battery, improves the intelligence and use experience of the earphone. The circuit is as shown in Figure 13 .

[0064] In this embodiment, the earphone body is also equipped with a second motion detection module, namely an acceleration sensor, as described above, which can remind the user that the device is being tracked by the Find My device and detect whether the user's device is secretly carried by others. The circuit is as shown in Figure 14 .

[0065] The pin 1, pin 4, pin 8 and pin 9 of the second motion detection module are grounded, the pin 2 of the second motion detection module is connected to the pin 14 of the second Bluetooth master control chip, the pin 3, pin 7 and pin 11 of the second motion detection module are connected to the pin 2 of the second Bluetooth master control chip, the pin 5 of the second motion detection module is connected to the pin 10 of the second Bluetooth chip, and the pin 12 of the second motion detection module is connected to the pin 15 of the second Bluetooth master control chip.

[0066] In this embodiment, the second sound emitting module, namely the speaker in the earphone, can not only support daily music playing and phone answering, but also can emit sound through mobile phone control when the earphone is lost, helping the user to quickly locate the device. This function greatly improves the efficiency of finding the earphone and effectively avoids the inconvenience caused by the loss of the device. The circuit is as shown in Figure 15 .

[0067] In the embodiment, the earphone body further comprises a charging module, a second key module, an indicator light module and a MIC module connected with the second Bluetooth chip.

[0068] The charging module of the embodiment adopts a simple magnetic charging design, and a charging management circuit integrated in a JL7003D master control IC provides a charging function for the battery. Figure 16

[0069] In the embodiment, the second key module is mainly used to provide convenient control functions, including playing / pausing music, answering / hanging up a call, adjusting volume, switching songs, etc. Figure 17

[0070] The indicator light module is used to display the working state and connection status of the earphone. Figure 18

[0071] The MIC module is used to clearly transmit the user's voice to the other party during a call. Figure 19

[0072] The TWS Bluetooth earphone of the utility model has the advantages of:

[0073] The utility model discloses a TWS Bluetooth earphone, which comprises an earphone body and an earphone charging bin.

[0074] The above is only the preferred embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation or direct / indirect application in other related technical fields within the concept of the utility model is included in the patent protection range of the utility model.​​​​

Claims

1. A TWS Bluetooth earphone, characterized in that, The device includes an earphone body and an earphone charging case. The earphone charging case is used to store the earphone body and charge the earphone body. The earphone charging case is equipped with a first Bluetooth main control chip, a first motion detection module and a first sound generation module connected to the first Bluetooth main control chip. The earphone body includes a second Bluetooth main control chip, a second motion detection module and a second sound generation module connected to the second Bluetooth main control chip; The first Bluetooth master control chip and the second Bluetooth master control chip are respectively connected to smart terminals in the Find My network.

2. The TWS Bluetooth earphone according to claim 1, characterized in that, The first Bluetooth master control chip is model JL7012F.

3. The TWS Bluetooth earphone according to claim 2, characterized in that, Both the first motion detection module and the second motion detection module use the SC7A20E chip. Pin 1 of the first motion detection module is grounded, pin 2 of the first motion detection module is connected to pin 10 of the first Bluetooth master control chip, pins 3, 7 and 11 of the first motion detection module are connected to pin 6 of the first Bluetooth master control chip, pin 5 of the first motion detection module is connected to pin 17 of the first Bluetooth master control chip, pins 8 and 9 of the first motion detection module are grounded, and pin 12 of the first motion detection module is connected to pin 11 of the first Bluetooth master control chip.

4. The TWS Bluetooth earphone according to claim 3, characterized in that, The first sound-generating module includes a diode D3, a resistor R30, a resistor R31, and a MOSFET Q5. One end of the resistor R30 is connected to pin 33 of the first Bluetooth main control chip, and the other end is connected to one end of the resistor R31 and the base of the MOSFET Q5. The other end of the resistor R30 and the emitter of the MOSFET Q5 are grounded. The collector of the MOSFET Q5 is connected to the anode of the diode D3 and BUZZ-. The pins of the diode D3 are connected to VBAT and BUZZ+.

5. The TWS Bluetooth earphone according to claim 4, characterized in that, The earphone charging case also includes a PMU module, a storage module, a Hall module, a display and touch module, and a first button module connected to the first Bluetooth main control chip.

6. The TWS Bluetooth earphone according to claim 2, characterized in that, The second Bluetooth master control chip is model JL7003D.

7. The TWS Bluetooth earphone according to claim 6, characterized in that, Pins 1, 4, 8, and 9 of the second motion detection module are grounded. Pin 2 of the second motion detection module is connected to pin 14 of the second Bluetooth master control chip. Pins 3, 7, and 11 of the second motion detection module are connected to pin 2 of the second Bluetooth master control chip. Pin 5 of the second motion detection module is connected to pin 10 of the second Bluetooth master control chip. Pin 12 of the second motion detection module is connected to pin 15 of the second Bluetooth master control chip.

8. The TWS Bluetooth earphone according to claim 7, characterized in that, The earphone body also includes a charging module, a second button module, an indicator light module, and a microphone module connected to the second Bluetooth main control chip.

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