CN202979266U - Bluetooth session handle with long battery life - Google Patents
Bluetooth session handle with long battery life Download PDFInfo
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- CN202979266U CN202979266U CN 201320006060 CN201320006060U CN202979266U CN 202979266 U CN202979266 U CN 202979266U CN 201320006060 CN201320006060 CN 201320006060 CN 201320006060 U CN201320006060 U CN 201320006060U CN 202979266 U CN202979266 U CN 202979266U
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 25
- 230000005236 sound signal Effects 0.000 claims abstract description 18
- 230000003321 amplification Effects 0.000 claims description 6
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 6
- 230000003044 adaptive effect Effects 0.000 claims description 4
- 230000001629 suppression Effects 0.000 description 6
- 230000006978 adaptation Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
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Abstract
The utility model relates to a Bluetooth session handle with long battery life. The session handle comprises a Bluetooth processing chip, a signal receiving antenna, a storage module, a digital-analog conversion module, an audio amplifying module, a speaker, a microphone and a power supply module. The signal receiving antenna and the storage module are connected with the Bluetooth processing chip. The digital-analog conversion module, the audio amplifying module and the speaker which are used for achieving signal playing function are connected with the Bluetooth processing chip in sequence. The microphone is used for collecting audio signals, the audio signals captured by the microphone are sent to the Bluetooth processing chip through an analog-digital conversion module, and the microphone and analog-digital conversion module are matched with the digital-analog conversion module, the audio amplifying module and the speaker to complete a Bluetooth phone function. The power supply module provides power for all the functional modules, and the power supply module uses a large-capacity rechargeable battery. The Bluetooth session handle has the integrated functions of a Bluetooth phone and an audio player, convenience of users is improved, and cost is reduced.
Description
Technical Field
The utility model relates to a bluetooth technical field.
Background
Most of the existing Bluetooth products are Bluetooth earphones and Bluetooth sound boxes. The Bluetooth headset can be used for receiving the incoming call of the mobile phone, and radiation is reduced. The bluetooth speaker accessible wireless signal transmission plays the music, carries out conference call etc.. But the two are often separate devices and need to be purchased separately for use. Combining the two has certain technical difficulties.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the problem that needs to solve provides a multiple function combines to have the bluetooth meeting handle of battery duration as an organic whole simultaneously.
The technical scheme of the utility model is that: the utility model provides a take bluetooth meeting handle of battery duration, includes bluetooth processing chip and the signal reception antenna, the storage module of being connected with it, its characterized in that still includes:
the digital-to-analog conversion module, the audio power amplification module and the loudspeaker are sequentially connected with the Bluetooth processing chip and used for completing the audio signal playing function;
the microphone is used for collecting audio signals, the audio signals collected by the microphone are connected with the Bluetooth processing chip through the analog-to-digital conversion module, and the microphone and the analog-to-digital conversion module are matched with the digital-to-analog conversion module, the audio power amplification module and the loudspeaker to complete a Bluetooth call function;
and the power supply module is used for providing power for each functional module and adopts a high-capacity rechargeable battery.
Preferably, the bluetooth conference handle further comprises an echo suppression unit, the echo suppression unit synthesizes signals of an input end and an output end of a conversion chip in the analog-to-digital conversion module, amplifies the signals according to a certain gain, transmits the signals to the digital-to-analog conversion module, demodulates the signals, and combines the signals with signals of the input end and the output end of the conversion chip in the digital-to-analog conversion module, and the digital-to-analog conversion module outputs signals to the audio power amplifier module.
Preferably, the bluetooth conference handle further comprises an adaptive audio power control unit.
Preferably, the bluetooth conference handle further comprises a USB interface module and an SPI bus interface module connected with the bluetooth processing chip.
Preferably, the bluetooth conference handle further comprises an adaptive audio power control unit, which comprises an operational amplifier, a pulse width modulator and a driving stage connected in series in sequence, wherein the input end of the operational amplifier is connected with an external audio signal output end, and the output end of the driving stage is connected with the front stage of the audio power amplifier module and is connected with the input end of the operational amplifier through a feedback loop.
Compared with the prior art, the beneficial effects of the utility model reside in that:
(1) the Bluetooth conference handle integrates the functions of telephone answering, hands-free listening music and conference telephone, and is matched with a high-capacity rechargeable battery for use, so that the convenience of use of a user is improved, and the cost is reduced;
(2) an echo suppression module is adopted in an internal circuit to be matched with a high-fidelity loudspeaker, so that the tone quality of music playing and the quality of a conference call are ensured;
(3) the internal circuit adopts a self-adaptive audio power control module to ensure the conversation quality when the handle and the hands-free are used.
Drawings
FIG. 1 is a schematic block diagram of the principle components of the present invention;
fig. 2 is a schematic block diagram of the principle components of the adaptive audio power control module of the present invention.
Detailed Description
In order to facilitate the understanding of the technical contents of the present invention by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
As shown in FIG. 1, bluetooth conference handle includes that the bluetooth handles chip and rather than the signal reception antenna, storage module, USB interface module, the SPI bus interface module of being connected, still including digital analog conversion module, audio power amplifier module and the speaker that is used for audio signal output to broadcast for audio signal input processing's microphone and analog-to-digital conversion module. Wherein,
the digital-to-analog conversion module, the audio power amplifier module and the loudspeaker are sequentially connected for playing the audio signals, and the digital-to-analog conversion module is connected with the Bluetooth processing chip. And the audio signal collected by the microphone is processed by the analog-to-digital conversion module and then output to the Bluetooth processing chip.
During conversation, voice signals collected by the microphone are output to the Bluetooth processing chip after passing through the analog-to-digital conversion module, then are correspondingly processed by the Bluetooth processing chip and are output to the antenna, and the voice signals are transmitted to a communication terminal supporting the Bluetooth function, such as a mobile phone, through the antenna; the voice signal of the other party is received by the antenna and then transmitted to the Bluetooth processing chip to be processed, and then the processed voice signal is output as a digital audio signal, then the digital audio signal is converted into an analog signal, and the analog signal is amplified and then output through the loudspeaker; and realizing the conversation.
The utility model discloses echo suppression function and self-adaptation audio power control function have. The echo suppression function is completed inside the Bluetooth processing chip. The echo elimination and noise suppression algorithm in the chip adopts an improved self-adaptive step size nonlinear filtering technology.
The self-adaptive audio power control unit comprises an operational amplifier, a pulse width modulator and a driving stage which are sequentially connected in series, wherein the input end of the operational amplifier is connected with an external audio signal output end, and the output end of the driving stage is connected with the front stage of the audio power amplification module and is connected with the input end of the operational amplifier through a feedback loop.
The bluetooth conference handle may further comprise one or more of a carrier adaptation circuit, a frequency adaptation circuit, a drive adaptation circuit, and a temperature adaptation circuit. Adopted the utility model discloses a timely automatically regulated can be made to input signal's amplitude, frequency, external temperature and drive level output current's change respectively to self-adaptation audio power control unit structure to improve EMI, distortion, consumption, frequency response, a great deal of audio power's such as temperature protection characteristic performance, and then promote user experience by a wide margin.
The external audio equipment can be sent to the Bluetooth handle through the Bluetooth function, and the audio signal is decoded, converted and then output and played; or the Bluetooth handle can be connected to the Bluetooth handle through a mobile storage device with a direct USB interface and then played.
The power module of this bluetooth handle adopts large capacity rechargeable battery, and duration is strong, can support the broadcast in the longer time.
The SPI bus interface is used for connecting external EEPROM, FLASH, real-time clock, AD converter, etc., and can also be connected with digital signal processor and digital signal decoder.
The utility model discloses a part of specifically introducing all can adopt prior art to realize, no longer gives unnecessary details here.
The above embodiments are only preferred implementations of the present invention, and any obvious substitutions and equivalent changes are all within the scope of the present invention without departing from the spirit of the present invention.
Claims (5)
1. The utility model provides a take bluetooth meeting handle of battery duration, includes bluetooth processing chip and the signal reception antenna, the storage module of being connected with it, its characterized in that still includes:
the digital-to-analog conversion module, the audio power amplification module and the loudspeaker are sequentially connected with the Bluetooth processing chip and used for completing the audio signal playing function;
the microphone is used for collecting audio signals, the audio signals collected by the microphone are connected with the Bluetooth processing chip through the analog-to-digital conversion module, and the microphone and the analog-to-digital conversion module are matched with the digital-to-analog conversion module, the audio power amplification module and the loudspeaker to complete a Bluetooth call function;
and the power supply module is used for providing power for each functional module and adopts a high-capacity rechargeable battery.
2. The bluetooth conference handle with battery life of claim 1, characterized in that: the Bluetooth device also comprises a USB interface module connected with the Bluetooth processing chip.
3. The bluetooth conference handle with battery life of claim 1, characterized in that: still include the SPI bus interface module of being connected with bluetooth processing chip.
4. The bluetooth conference handle with battery life of claim 1, characterized in that: the adaptive audio power control unit comprises an operational amplifier, a pulse width modulator and a driving stage which are sequentially connected in series, wherein the input end of the operational amplifier is connected with an external audio signal output end, and the output end of the driving stage is connected with the front stage of the audio power amplification module and is connected with the input end of the operational amplifier through a feedback loop.
5. The bluetooth conference handle with battery life of claim 4, characterized in that: the audio power amplifier further comprises one or more of a carrier self-adaptive circuit, a frequency self-adaptive circuit, a driving self-adaptive circuit and a temperature self-adaptive circuit which are connected with the audio power amplifier module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320006060 CN202979266U (en) | 2013-01-07 | 2013-01-07 | Bluetooth session handle with long battery life |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320006060 CN202979266U (en) | 2013-01-07 | 2013-01-07 | Bluetooth session handle with long battery life |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202979266U true CN202979266U (en) | 2013-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320006060 Expired - Fee Related CN202979266U (en) | 2013-01-07 | 2013-01-07 | Bluetooth session handle with long battery life |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202979266U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105657607A (en) * | 2014-11-15 | 2016-06-08 | 宏碁股份有限公司 | Audio terminal device |
| CN110366071A (en) * | 2019-06-28 | 2019-10-22 | 深圳艾创力科技有限公司 | A kind of intelligent meeting system based on bluetooth |
-
2013
- 2013-01-07 CN CN 201320006060 patent/CN202979266U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105657607A (en) * | 2014-11-15 | 2016-06-08 | 宏碁股份有限公司 | Audio terminal device |
| CN105657607B (en) * | 2014-11-15 | 2019-01-08 | 宏碁股份有限公司 | Audio terminal device |
| CN110366071A (en) * | 2019-06-28 | 2019-10-22 | 深圳艾创力科技有限公司 | A kind of intelligent meeting system based on bluetooth |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20170107 |
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| CF01 | Termination of patent right due to non-payment of annual fee |