CN219478110U - Bone conduction earphone for long-distance music transmission and intercom - Google Patents
Bone conduction earphone for long-distance music transmission and intercom Download PDFInfo
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- CN219478110U CN219478110U CN202320366689.4U CN202320366689U CN219478110U CN 219478110 U CN219478110 U CN 219478110U CN 202320366689 U CN202320366689 U CN 202320366689U CN 219478110 U CN219478110 U CN 219478110U
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- 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
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Abstract
The utility model discloses a bone conduction earphone for remote audio transmission and intercom. The device comprises a first movement unit and a second movement unit, wherein the first movement unit also comprises a wireless radio frequency transceiver circuit; the second movement unit also comprises a second amplifying circuit, a filter circuit connected with the second amplifying circuit and a second receiving and transmitting antenna connected with the filter circuit; the power supply unit is connected with a change-over switch, and the power supply unit supplies power to the wireless radio frequency transceiver circuit or the second amplifying circuit through the change-over of the change-over switch. The utility model adds the function of remote audio transmission and the intercom function on the basis of reserving the traditional Bluetooth bone conduction earphone. The principle of the realization is that the remote audio sharing function and the interphone function can be realized respectively through the switching of the change-over switch, so that the diversified user demands are met.
Description
Technical field:
the utility model relates to the technical field of earphone products, in particular to a bone conduction earphone for remote audio transmission and intercom.
The background technology is as follows:
bone conduction headphones generally include two headphone bodies and a rear suspension assembly connecting the two headphone bodies. The earphone body comprises an ear-hook assembly and a core part which are fixedly connected together, wherein the core part is used as a core part of the bone conduction earphone, and is required to be contacted with the skin surface of the head of a user in the use process. The transducer is arranged in the core and enables the skin contact area of the earphone body to generate bone conduction sound.
The bone conduction earphone is the same as the traditional Bluetooth earphone, and the Bluetooth earphone control circuit is still adopted by the control unit of the bone conduction earphone. At present, a Bluetooth control chip for the earphone adopts a 2.4GHz wireless technology, which is a short-distance wireless transmission technology, and although the Bluetooth earphone can obtain a larger application range and stronger anti-interference capability in a 2.4GHz frequency band, the transmission distance is shorter, and is usually only tens of meters or tens of meters. In addition, the bluetooth earphone on the market at present mainly adopts TWS, and because TWS is one-to-one transmission, one-to-many transmission cannot be achieved. Thus, in a group event, one person cannot simultaneously transmit his or her audio to the other multi-person's bluetooth headset using the existing bluetooth transmission.
In addition, the Bluetooth headset not only can be applied to products such as mobile phones, but also can be applied to interphones, for example, see the application number: 202010201720.X, which discloses an interphone, a bluetooth headset and a communication assembly.
The utility model comprises the following steps:
the utility model aims to solve the technical problem of overcoming the defects of the prior art and providing a bone conduction earphone for remote audio transmission and intercom.
In order to solve the technical problems, the utility model adopts the following technical scheme: a bone conduction earphone for remote audio transmission and intercom comprises a first core unit and a second core unit, wherein the first core unit and the second core unit are powered by a power supply unit; the first movement unit includes: the first control chip, the first bone conduction oscillator unit, the first storage unit, the first antenna module and the first microphone are connected with the first control chip; the second movement unit includes: the second control chip, the second bone conduction oscillator unit, the second storage unit and the second microphone are connected with the second control chip; the first movement unit also comprises a wireless radio frequency transceiver circuit, and the wireless radio frequency transceiver circuit comprises: the wireless radio frequency transceiver chip is connected with the first control chip; the second movement unit also comprises a second amplifying circuit, a filter circuit connected with the second amplifying circuit and a second receiving and transmitting antenna connected with the filter circuit; the power supply unit is connected with a change-over switch, and the power supply unit supplies power to the wireless radio frequency transceiver circuit or the second amplifying circuit through the change-over of the change-over switch.
Further, in the above technical solution, the power supply unit includes: the external power supply is connected through the charging interface, the battery is charged through the charging circuit, and the battery supplies power for the whole circuit.
In the above technical scheme, the wireless radio frequency transceiver chip is connected with the first control chip through the SPI interface.
In the above technical solution, the second control chip is connected with the second amplifying circuit through an IC interface.
In the above technical solution, the wireless radio frequency transceiver circuit adopts an a wireless radio frequency transceiver chip, the first transceiver antenna is connected with the first amplifying circuit, and the first amplifying circuit is connected to a radio frequency input/output pin of the wireless radio frequency transceiver circuit.
In the above technical solution, the frequency of the signal transmitted by the radio frequency transceiver circuit is MHz.
In the above technical scheme, the switch is connected with the radio frequency transceiver circuit through the first LDO circuit, and the switch is connected with the second amplifier circuit through the second LDO circuit.
Further, in the above technical solution, the first bone conduction transducer unit includes: the first bone conduction oscillator and the first power amplifier are connected with the first control chip; the second bone conduction vibrator unit includes: the second bone conduction oscillator and the second power amplifier are connected with the second control chip.
By adopting the technical scheme, compared with the prior art, the utility model has the following beneficial effects:
firstly, the utility model adds the function of remote audio transmission and the intercom function on the basis of reserving the traditional Bluetooth bone conduction earphone. The principle of the realization is that the remote audio sharing function and the interphone function can be realized respectively through the switching of the change-over switch, so that the diversified user demands are met.
Secondly, when the remote audio sharing function is realized, the principle is that an A7128 wireless radio frequency transceiver chip developed by the electronic development of the Shenke family is adopted, and the characteristics of strong medium-low frequency penetrating power and long transmission distance in 800MHz are utilized, so that the defects of weak high frequency penetrating rate and short distance in the traditional 2.4GHZ are overcome. The audio signal of the ordinary Bluetooth is transmitted to the wireless radio frequency transceiver chip through the SPI interface, the signal is further amplified through the first amplifying circuit, and the audio signal of 800MHz is transmitted through the first transceiver antenna, so that the remote transmission of 300 meters is achieved.
Finally, the principle of the implementation of the intercom function is that the transmitting end is used for processing the voice signal received by the second microphone MIC, and the voice signal is transmitted to the receiving end through the second receiving and transmitting antenna after noise elimination through the noise reduction algorithm after internal AD/DA conversion. Meanwhile, after receiving the signal, the second receiving-transmitting antenna as the receiving end filters the signal through the filter circuit, transmits the received signal to the second control chip, decodes the signal through the digital signal processing unit in the second control chip, converts the signal into an analog signal through DA, transmits the analog signal to the second bone conduction vibrator unit, and finally enables the receiver to hear the voice information sent by the transmitting end.
The application scene of the utility model is as follows: in public places such as movie theatres, squares, gatherings, for the interdynamic of members in the crowd, avoid noisy sound to influence surrounding crowd simultaneously, the user can share the function through bluetooth chip self music, share the favorite music for favorite friends, simultaneously, can also realize the contact between the members through the function of talkbacking. The sharing and intercom functions of the audio can be switched through the change-over switch, so that the two different functions cannot be mutually influenced.
Description of the drawings:
FIG. 1 is a schematic diagram of the present utility model;
fig. 2 is a circuit diagram of a radio frequency transceiver circuit in the present utility model;
FIG. 3 is a schematic circuit diagram of a diverter switch according to the present utility model;
FIG. 4 is a circuit diagram of a first LDO circuit or a second LDO circuit according to the present utility model.
The specific embodiment is as follows:
the utility model will be further described with reference to specific examples and figures.
The utility model relates to a bone conduction earphone for remote audio transmission and intercom. As shown in fig. 1, it includes: a first deck unit 10 and a second deck unit 20, wherein the first deck unit 10 and the second deck unit 20 are supplied with power through a power supply unit 30. The first core unit 10 and the second core unit 20 are respectively used as two core parts in the bone conduction earphone, and are used for receiving audio signals, converting the audio signals into vibration of the bone conduction vibrator unit, and transmitting the vibration to a human body, so that a user can receive corresponding audio information.
The present utility model has a basic circuit of a general bone conduction headset, wherein the first deck unit 10 includes: the first control chip 11, the first bone conduction oscillator unit connected to the first control chip 11, the first storage unit 14, the first antenna module 15, the first microphone 16, and the crystal oscillator 18. The second deck unit 20 includes: a second control chip 21, and a second bone conduction transducer unit, a second storage unit 24, a second microphone 26, and a crystal oscillator 28 connected to the second control chip 21.
The first bone conduction vibrator unit includes: a first bone conduction oscillator 12 and a first power amplifier 13 connected to the first control chip 11; the second bone conduction vibrator unit includes: a second bone conduction transducer 22 and a second power amplifier 23 connected to the second control chip 21.
The first movement unit 10 and the second movement unit 20 are powered by a power supply unit 30, the power supply unit 30 comprising: the battery 31, the charging circuit 32 and the charging interface 33, the external power supply is connected through the charging interface 33, the battery 32 is charged through the charging circuit 32, and the battery 32 supplies power to the whole circuit.
The wireless Bluetooth bone conduction earphone is different from the current common wireless Bluetooth bone conduction earphone in that: in the utility model, a wireless radio frequency transceiver circuit 17 is added in the first movement unit 10, and the wireless radio frequency transceiver circuit 17 has the following functions: according to the utility model, the audio signal received by the bone conduction earphone through the wireless Bluetooth is transmitted out through the wireless radio frequency transceiver circuit 17, and other users also receive the radio frequency signal through the wireless radio frequency transceiver circuit 17, so that long-distance transmission of audio is realized.
The utility model adds the wireless radio frequency transceiver circuit 17 in the bone conduction earphone, and has the advantages that:
firstly, the signal frequency of the wireless radio frequency transceiver circuit 17 can be the middle-low frequency of 800MHz, the signal penetrating power of the wave band is strong, the transmission distance is long, and the defects of weak high-frequency penetrating rate and short distance in 2.4GHz adopted in the traditional Bluetooth transmission are overcome.
Secondly, TWS signal transmission is adopted in the existing bone conduction earphone, and one-to-many transmission cannot be achieved because TWS is one-to-one transmission. The wireless radio frequency transceiver circuit 17 can realize one-to-many transmission, so that one person can simultaneously transmit own audio to the bone conduction earphone of other multiple persons in group activities.
Referring to fig. 2, which is a circuit diagram of the radio frequency transceiver circuit 17 of the present utility model, the radio frequency transceiver circuit 17 includes: a wireless radio frequency transceiver chip 171, a first amplifying circuit 172, a first transceiver antenna 173, and a crystal oscillator 174. The radio frequency transceiver chip 171 is connected to the first control chip 11. The wireless radio frequency transceiver chip 171 is connected with the first control chip 11 through an SPI interface.
In this embodiment, the first control chip 11 may be a high-pass QCC3040 bluetooth audio chip, and the wireless radio frequency transceiver chip 171 may be an a7128 wireless radio frequency transceiver chip developed by shenke electronics. The two chips can realize serial communication through SPI serial peripheral interface. Typically, the SPI interface requires only 4 lines to connect, namely a serial clock line, an output data line, an input data line, and a select line. The wireless radio frequency transceiver chip a7128 supports the SPI serial interface, and in combination with the illustration of fig. 2, SCK, SCS, DVDD, SDIO in the wireless radio frequency transceiver chip a7128 is used as four wires of the SPI serial interface, and is connected to pins corresponding to the UI in the bluetooth audio chip QCC3040 as the first control chip 11, so that communication between the first control chip 11 and the wireless radio frequency transceiver chip 171 can be achieved.
The working principle of the wireless radio frequency transceiver circuit 17 is as follows:
when the first control chip 11 is used as a transmitting end, an audio signal received by bluetooth is transmitted to the wireless radio frequency transceiver chip 171 through the SPI serial interface, and the wireless radio frequency transceiver chip 171 processes the signal, and further amplifies the signal by the first amplifying circuit 172, and then the signal is transmitted by the first transceiver antenna 173. In this embodiment, the signal frequency received by the radio frequency transceiver circuit 17 adopts a medium-low frequency of 800MHZ, and the effective transmission distance can reach 300 meters.
When the receiving terminal is the receiving terminal, the first receiving-transmitting antenna 173 receives the radio frequency signal sent by the corresponding transmitting terminal, and then the first amplifying circuit 172 is heard to input the radio frequency receiving-transmitting chip 171, the radio frequency receiving-transmitting chip 171 processes the signal and then transmits the signal to the first control chip 11 through the SPI serial interface, the first control chip 11 sends the signal out and then transmits the signal to the first bone conduction vibrator unit, the audio signal is converted into a vibration signal and then transmitted to the head of the user, and thus the user receives the corresponding audio information.
The second deck unit 20 further includes a second amplifying circuit 26, a filter circuit 27 connected to the second amplifying circuit 26, and a second transceiver antenna 28 connected to the filter circuit 27. The second control chip 21 can also adopt a high-pass QCC3040 Bluetooth audio chip, and the second control chip 21 is connected with the second amplifying circuit 26 through an I2C interface. The I2C bus interface may implement communication control and audio data transmission of both.
The principle of the second movement unit 20 implementing the intercom function is:
when the device is used as a transmitting end, firstly, a user receives voice information through the second microphone 25, the voice information converts analog signals into digital signals through AD/DA conversion in the second control chip 21, then, noise is eliminated through a noise reduction algorithm in the second control chip 21, the signals are amplified through the second amplifying circuit 26, and after being filtered through the filter circuit 27, the signals are transmitted through the second receiving and transmitting antenna 29, so that the function of calling out in intercom is realized
When the wireless communication device is used as a receiving end, firstly, signals are received through the second receiving and transmitting antenna 29, are transmitted to the second control chip 21 after passing through the filter circuit 27 and the second amplifying circuit 26, are transmitted to the second bone conduction vibrator unit after being processed by the second control chip 21, and are converted into vibration signals and are transmitted to the head of a user, so that the user receives corresponding audio information, and the receiving function in intercom is realized.
The first movement unit 10 and the second movement unit 20 are powered by the power supply unit 30, but the first movement unit 10 also has an audio sharing transmission function, and the second movement unit 20 also has an intercom function, so that in order to prevent the audio contribution transmission function and the intercom function from interfering with each other, only one of the functions can be realized at the same time, and the utility model is realized by the change-over switch 40.
Referring to fig. 3, a schematic circuit diagram of a switch 40 according to the present utility model includes an input 41, two outputs 42, 43, two switch outputs 44, 45, and a switch 46. The input end 41 is connected with the output end of the power supply unit 30, after the current output by the power supply unit 30 is input through the input end 41, the power is firstly supplied to the first movement unit 10 and the second movement unit 20 through the two output ends 42 and 43 respectively, and the two output ends 42 and 43 are kept smooth all the time, so that the first control chip 11 and the second control chip 21 in the first movement unit 10 and the second movement unit 20 can work normally. The switching output terminals 44 and 45 are required to be switched, and the two switching output terminals 44 and 45 are respectively connected with the radio frequency transceiver circuit 17 and the second amplifying circuit 26, and the two switching output terminals 44 and 45 are respectively conducted through the switching key 46. For example, when the switching output terminal 44 is turned on, the current is supplied to the radio frequency transceiver circuit 17 through the switching output terminal 44, and at this time, the remote audio sharing and transmitting function can be realized in the first core unit 10, and meanwhile, since the second amplifying circuit 26 does not have a current output, it cannot work, and the intercom function of the second core unit 20 cannot be realized. Conversely, the intercom function of the second movement unit 20 may operate, while the radio frequency transceiver circuit 17 is not powered and cannot operate.
Of course, in order to ensure the stability of the power supply unit 30 supplying power to the radio frequency transceiver circuit 17 or the second amplifying circuit 26, the switch 40 is connected to the radio frequency transceiver circuit 17 through the first LDO circuit 100, and the switch 40 is connected to the second amplifying circuit 26 through the second LDO circuit 200.
Referring to fig. 4, in the present embodiment, the first LDO circuit 100 and the second LDO circuit 200 have the same circuit design, and a low dropout linear regulator module with the model SCJ6230 is adopted, and after the current is input through the switch 40 through the 1 st pin VIN, the current is output from the 5 th pin VOUT after processing, so as to provide a stable 3V voltage for the radio frequency transceiver circuit 17 or the second amplifying circuit 26.
It is understood that the foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, but rather is to be accorded the full scope of all such modifications and equivalent structures, features and principles as set forth herein.
Claims (8)
1. A bone conduction earphone for long-distance music and intercom comprises a first core unit (10) and a second core unit (20), wherein the first core unit (10) and the second core unit (20) are powered by a power supply unit (30);
the first movement unit (10) includes: a first control chip (11), a first bone conduction oscillator unit connected with the first control chip (11), a first storage unit (14), a first antenna module (15) and a first microphone (16);
the second movement unit (20) includes: a second control chip (21), a second bone conduction vibrator unit connected with the second control chip (21), a second storage unit (24) and a second microphone (25);
the method is characterized in that:
the first movement unit (10) further comprises a radio frequency transceiver circuit (17), and the radio frequency transceiver circuit (17) comprises: the wireless radio frequency transceiver chip (171), the first amplifying circuit (172) and the first transceiver antenna (173), wherein the wireless radio frequency transceiver chip (171) is connected with the first control chip (11);
the second movement unit (20) further comprises a second amplifying circuit (26), a filter circuit (27) connected with the second amplifying circuit (26) and a second receiving and transmitting antenna (28) connected with the filter circuit (27);
the power supply unit (30) is connected with a change-over switch (40), and the power supply unit (30) supplies power to the wireless radio frequency transceiver circuit (17) or the second amplifying circuit (26) through the change-over of the change-over switch (40).
2. The bone conduction headset for transmitting music and intercom at a long distance as claimed in claim 1, wherein: the power supply unit (30) includes: the battery (31), the charging circuit (32) and the charging interface (33), external power is connected through the charging interface (33), the battery (31) is charged through the charging circuit (32), and the battery (31) supplies power for the whole circuit.
3. The bone conduction headset for transmitting music and intercom at a long distance as claimed in claim 1, wherein: the wireless radio frequency transceiver chip (171) is connected with the first control chip (11) through an SPI interface.
4. The bone conduction headset for transmitting music and intercom at a long distance as claimed in claim 1, wherein: the second control chip (21) is connected with the second amplifying circuit (26) through an I2C interface.
5. The bone conduction headset for transmitting music and intercom at a long distance as claimed in claim 1, wherein: the wireless radio frequency transceiver circuit (17) adopts an A7128 wireless radio frequency transceiver chip, the first transceiver antenna (173) is connected with the first amplifying circuit (172), and the first amplifying circuit (172) is connected to a radio frequency input/output pin of the wireless radio frequency transceiver circuit (17).
6. The bone conduction headset for transmitting music and intercom at a long distance as claimed in claim 1, wherein: the frequency of the receiving and transmitting signals of the wireless radio frequency receiving and transmitting circuit (17) is 800MHz.
7. A bone conduction headset for long distance transmission of music and intercom as in any of claims 1-6 wherein: the switching switch (40) is connected with the wireless radio frequency receiving and transmitting circuit (17) through the first LDO circuit (100), and the switching switch (40) is connected with the second amplifying circuit (26) through the second LDO circuit (200).
8. The bone conduction headset for remote transmission of music and intercom of claim 7, wherein: the first bone conduction vibrator unit includes: a first bone conduction oscillator (12) and a first power amplifier (13) connected with the first control chip (11); the second bone conduction vibrator unit includes: a second bone conduction vibrator (22) and a second power amplifier (23) connected with the second control chip (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320366689.4U CN219478110U (en) | 2023-03-01 | 2023-03-01 | Bone conduction earphone for long-distance music transmission and intercom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320366689.4U CN219478110U (en) | 2023-03-01 | 2023-03-01 | Bone conduction earphone for long-distance music transmission and intercom |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219478110U true CN219478110U (en) | 2023-08-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320366689.4U Active CN219478110U (en) | 2023-03-01 | 2023-03-01 | Bone conduction earphone for long-distance music transmission and intercom |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219478110U (en) |
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2023
- 2023-03-01 CN CN202320366689.4U patent/CN219478110U/en active Active
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