CN204069303U - Portable blue-tooth audio amplifier - Google Patents

Portable blue-tooth audio amplifier Download PDF

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Publication number
CN204069303U
CN204069303U CN201420536839.2U CN201420536839U CN204069303U CN 204069303 U CN204069303 U CN 204069303U CN 201420536839 U CN201420536839 U CN 201420536839U CN 204069303 U CN204069303 U CN 204069303U
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China
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circuit
electrically connected
signal
control circuit
output
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CN201420536839.2U
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Chinese (zh)
Inventor
葛秀良
陶益峰
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HANGZHOU NUVO ELECTRONICS CO Ltd
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HANGZHOU NUVO ELECTRONICS CO Ltd
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Abstract

The utility model proposes a kind of portable blue-tooth audio amplifier, the main circuit comprising housing and be built in housing and output loading, main circuit comprises Bluetooth signal control circuit, power module circuitry and power amplifier, power module circuitry comprises charge management circuit, switched filter circuit, owe pyroelectric monitor circuit and lithium battery, the input of charge management circuit connects external power source, the output of charge management circuit is electrically connected with the input of switched filter circuit, the output of switched filter circuit and lithium battery, owe pyroelectric monitor circuit, power amplifier is electrically connected, charge management circuit, owe pyroelectric monitor circuit, power amplifier is electrically connected with Bluetooth signal control circuit respectively, output loading is electrically connected with power amplifier.The utility model power consumption is low, can realize intelligentized control method, environmental protection, can allow the various pan of the arbitrary broadcasting of user; Be convenient to carry with and lay, tonequality is good, has operating time and the stand-by time of overlength.

Description

Portable blue-tooth audio amplifier
Technical field
The utility model relates to a kind of electroacoustic equipment, refers in particular to a kind of portable blue-tooth audio amplifier.
Background technology
Along with the competition of Audio Market, ANTENN AUDIO has become next step developing focus of all big enterprises, among all kinds of wireless technology, it is the most ripe that bluetooth can be described as current technology, one of most widely used technology, on market, the various in style of bluetooth equipment just well demonstrates this point.So Bluetooth technology is quoted in audio amplifier field, old-fashioned plug-in audio amplifier is slowly substituted, the limitation connected by RCA line or the mini three-dimensional sound ray of 3.5mm by music signal under solving traditional mode, thus realizes home intelligence.Unreasonable then due to power supply architecture or control chip structure of the existing Baffle Box of Bluetooth of part, and cause really realizing portable and energy-conservation.
Utility model content
In order to solve the intelligent not enough problem of existing audio amplifier, the utility model proposes a kind of portable blue-tooth audio amplifier, realize wireless terminal audio signal and control and transmission, family expenses and open air, really realize portable, energy-conservation, intelligent.
The technical scheme that the utility model adopts is: a kind of portable blue-tooth audio amplifier, the main circuit comprising housing and be built in housing and output loading, described main circuit comprises Bluetooth signal control circuit, power module circuitry and power amplifier, described power module circuitry comprises charge management circuit, switched filter circuit, owe pyroelectric monitor circuit and lithium battery, the input of charge management circuit connects external power source, the output of charge management circuit is electrically connected with the input of switched filter circuit, the output of switched filter circuit and lithium battery, owe pyroelectric monitor circuit, power amplifier is electrically connected, charge management circuit, owe pyroelectric monitor circuit, power amplifier is electrically connected with Bluetooth signal control circuit respectively, described output loading is electrically connected with power amplifier.
The utility model is on system, adopt the transmission of wireless audio data streams and the bluetooth module of decoding technique, with possess A2DP, AVRCP and transmit and connect with the bluetooth audiogenic device of remote control protocol, realize the wireless receiving of high-quality stereo audio stream, and Long-distance Control can be realized to player of source of sound, thus realize the commentary of Online Music or local music content.DC power supply 15V input connects charge management circuit input, switched filter circuit exports termination lithium battery and provides charging for it, switched filter circuit output is directly for power amplifier provides operating voltage, charge management circuit, deficient pyroelectric monitor circuit and power amplifier one termination master chip control circuit, do state by the work of software administration lithium battery.Adopt wireless audio data streams signal transmission between the Bluetooth signal receiving circuit in the terminal such as smart mobile phone or panel computer and Bluetooth signal control circuit, really realize family expenses and outdoor portable, energy-conservation, intelligent.
As preferably, described housing is cuboid-type, and former and later two surfaces of housing are streamlined.Streamlinedly facilitate hand-held or other carrying modes.
As preferably, the length of described housing is less than 25cm, and the height of housing is less than 15cm, and width is less than 7.5cm.The optimum size of housing is that 23.6cm long * 12cm height * 6.3cm is wide, and weight is about 760g.The utility model is beneficial to portable, can meet family expenses, also can meet long outdoor use.
As preferably, the bottom of described housing is fixedly connected with slipmat.The damage that slipmat can effectively avoid unnecessary landing etc. to cause.
As preferably, described Bluetooth signal control circuit comprises Bluetooth signal receiving circuit, bluetooth decoding circuit, audio frequency processing circuit, volume sound effect processing circuit, master chip control circuit, signal deteching circuit and signal control circuit, the signal output part of described Bluetooth signal receiving circuit is electrically connected with the signal input part of bluetooth decoding circuit, the signal output part of described bluetooth decoding circuit respectively with master chip control circuit, the signal input part electrical connection of audio frequency processing circuit, the signal output part of described audio frequency processing circuit is electrically connected with volume sound effect processing circuit, the described output of volume sound effect processing circuit is electrically connected with the input of signal control circuit, the output termination of described signal control circuit is electrically connected with power amplifier, described signal deteching circuit is provided with circuit input interface, signal deteching circuit respectively with master chip control circuit, volume sound effect processing circuit is electrically connected.
As preferably, described power module circuitry comprises charge management circuit, switched filter circuit, owes pyroelectric monitor circuit and lithium battery, the input of charge management circuit connects external power source, the output of charge management circuit is electrically connected with the input of switched filter circuit, the output of switched filter circuit is electrically connected with lithium battery, deficient pyroelectric monitor circuit, power amplifier, and charge management circuit, deficient pyroelectric monitor circuit are electrically connected with master chip control circuit respectively.
As preferably, described power amplifier is D class amplification circuit.
As preferably, described main circuit also comprises NFC communication module circuit, and described NFC communication module circuit is electrically connected with master chip control circuit.By arranging NFC communication module circuit in housing, realize carrying out contactless Point-to-Point Data Transmission between the utility model and external electronic device.
As preferably, described power module circuitry also comprises D.C. regulated power supply, and D.C. regulated power supply is connected with lithium battery.Power supply is equipped with a D.C. regulated power supply, export 15V/1000mA to the lithium cell charging in lithium battery management circuit, charging interval 2-2.5 hour, Baffle Box of Bluetooth can use 10-15 hour normal working hours, transmission range 50 meters, stand-by time 20-30 days, thus really realize the functions such as portable, energy-conservation, intelligent.
The beneficial effects of the utility model are: adopt Bluetooth technology power consumption lower, can realize intelligentized control method, highlight environmental protection, can allow the various pan of the arbitrary broadcasting of user; Be convenient to carry with and lay, tonequality is good, has operating time and the stand-by time of overlength.
Accompanying drawing explanation
Fig. 1 is a kind of circuit structure block diagram of the present utility model.
In figure, 1-Bluetooth signal control circuit, 2-power module circuitry, 3-power amplifier, 4-output loading, 5-, 6-Bluetooth terminal, 11-Bluetooth signal receiving circuit, 12-, bluetooth decoding circuit, 13-audio frequency processing circuit, 14-volume sound effect processing circuit, 15-master chip control circuit, 16-signal deteching circuit, 17-signal control circuit, 21-Charge Management electricity, 22-switched filter circuit, 23-lithium battery, 24-owes pyroelectric monitor circuit.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
As shown in Figure 1, a kind of portable blue-tooth audio amplifier, comprise housing and the main circuit be built in housing and output loading 4, main circuit comprises Bluetooth signal control circuit 1, power module circuitry 2 and power amplifier 3.Housing is cuboid-type, and former and later two surfaces of housing are streamlined.The optimum size of housing is that 23.6cm long * 12cm height * 6.3cm is wide, and weight is about 760g.The utility model is beneficial to portable, can meet family expenses, also can meet long outdoor use, and tonequality can reach higher level, be better than Baffle Box of Bluetooth general on market, can meet most users.Output loading 4 is electrically connected with power amplifier 3, and output loading 4 can be the loudspeaker of the 10W that 2 power are.
Bluetooth signal control circuit 1 comprises Bluetooth signal receiving circuit 11, bluetooth decoding circuit 12, audio frequency processing circuit 13, volume sound effect processing circuit 14, master chip control circuit 15, signal deteching circuit 16 and signal control circuit 17, the signal output part of Bluetooth signal receiving circuit 11 is electrically connected with the signal input part of bluetooth decoding circuit 12, the signal output part of bluetooth decoding circuit 12 respectively with master chip control circuit 15, the signal input part electrical connection of audio frequency processing circuit 13, the signal output part of audio frequency processing circuit 13 is electrically connected with volume sound effect processing circuit 14, the output of volume sound effect processing circuit 14 is electrically connected with the input of signal control circuit 17, the output termination of signal control circuit 17 is electrically connected with power amplifier 3, signal deteching circuit 16 is provided with circuit input interface, signal deteching circuit 16 respectively with master chip control circuit 15, volume sound effect processing circuit 13 is electrically connected.Signal deteching circuit 16 is provided with circuit input interface, circuit input interface and Line-in interface, refer to external sound source equipment mobile phone, DVD, dull and stereotyped by 3.5 three-dimensional sound rays or RCA line by circuit input interface access Baffle Box of Bluetooth, now circuit input interface is preferential.
Power module circuitry 2 comprises charge management circuit 21, switched filter circuit 22, owe pyroelectric monitor circuit 24 and lithium battery 23, the input of charge management circuit 21 connects external power source 15V source, the output of charge management circuit 21 is electrically connected with the input of switched filter circuit 22, the output of switched filter circuit 22 and lithium battery 23, owe pyroelectric monitor circuit 24, power amplifier 3 is electrically connected, charge management circuit 21, owe pyroelectric monitor circuit 24, power amplifier 3 is electrically connected with the master chip control circuit 15 of Bluetooth signal control circuit 1 respectively, the operating state of management lithium battery 23: when deficient pyroelectric monitor circuit 24 detects that lithium battery 23 electricity transmits a signal to master chip control circuit 15 time not enough, charge management circuit 21 charges to lithium battery after switched filter circuit 22 filtering.
Power module circuitry 2 also comprises D.C. regulated power supply, and D.C. regulated power supply is electrically connected with lithium battery 23.D.C. regulated power supply exports 15V/1000mA to the lithium cell charging in lithium battery management circuit, charging interval 2-2.5 hour, Baffle Box of Bluetooth can use 10-15 hour, transmission range 50 meters normal working hours, stand-by time 20-30 days, thus really realize the functions such as portable, energy-conservation, intelligent.
Main circuit also comprises NFC communication module circuit 5, NFC communication module circuit 5 and is electrically connected with master chip control circuit 15.By arranging NFC communication module circuit in housing, realize carrying out contactless Point-to-Point Data Transmission between the utility model and external electronic device.
During use, first switch on power, Bluetooth signal receiving circuit 11 can find the Bluetooth terminal 6 such as panel computer or mobile phone of periphery, master chip control circuit 15 and bluetooth decoding circuit 12, signal deteching circuit 16, power amplifier 3, charge management circuit 21 and deficient pyroelectric monitor circuit 24 carry out communication, the Detection & Controling of realizing circuit state; After Bluetooth signal receiving circuit 11 does not have signal or circuit input interface not to input to exceed setting-up time, the utility model enters standby mode, exceedes and enters off-mode half an hour; By inner LNA processing of circuit after Bluetooth signal receiving circuit 11 receives Bluetooth audio signals 2.0/4.0 bluetooth protocol repertory, bluetooth decoding circuit 12 is sent to process, decoded audio frequency I2S signal converts the differential signal of left and right acoustic channels to by inner DAC-circuit, differential signal send volume sound effect processing circuit 14 after a buffer processing of circuit, signal after modulation is through signal control circuit 17, and then sending power amplifier 3 to carry out signal amplification, the signal after amplification receives the broadcasting that output loading 4 realizes music.
Above embodiment is only and technological thought of the present utility model is described; protection range of the present utility model can not be limited with this; every technological thought according to the utility model proposes, any change that technical scheme basis is done, all falls within protection range of the present utility model.

Claims (7)

1. a portable blue-tooth audio amplifier, the main circuit comprising housing and be built in housing and output loading, it is characterized in that: described main circuit comprises Bluetooth signal control circuit, power module circuitry and power amplifier, described power module circuitry comprises charge management circuit, switched filter circuit, owe pyroelectric monitor circuit and lithium battery, the input of charge management circuit connects external power source, the output of charge management circuit is electrically connected with the input of switched filter circuit, the output of switched filter circuit and lithium battery, owe pyroelectric monitor circuit, power amplifier is electrically connected, charge management circuit, owe pyroelectric monitor circuit, power amplifier is electrically connected with Bluetooth signal control circuit respectively, described output loading is electrically connected with power amplifier.
2. portable blue-tooth audio amplifier according to claim 1, is characterized in that: described housing is cuboid-type, and former and later two surfaces of housing are streamlined.
3. portable blue-tooth audio amplifier according to claim 2, it is characterized in that: the length of described housing is less than 25cm, the height of housing is less than 15cm, and width is less than 7.5cm.
4. portable blue-tooth audio amplifier according to claim 1, is characterized in that: described Bluetooth signal control circuit comprises Bluetooth signal receiving circuit, bluetooth decoding circuit, audio frequency processing circuit, volume sound effect processing circuit, circuit input interface, master chip control circuit, signal deteching circuit and signal control circuit, the signal output part of described Bluetooth signal receiving circuit is electrically connected with the signal input part of bluetooth decoding circuit, the signal output part of described bluetooth decoding circuit respectively with master chip control circuit, the signal input part electrical connection of audio frequency processing circuit, the signal output part of described audio frequency processing circuit is electrically connected with volume sound effect processing circuit, the described output of volume sound effect processing circuit is electrically connected with the input of signal control circuit, the output termination of described signal control circuit is electrically connected with power amplifier, described signal deteching circuit respectively with circuit input interface, master chip control circuit, volume sound effect processing circuit is electrically connected, charge management circuit, owe pyroelectric monitor circuit, power amplifier is electrically connected with master chip control circuit respectively.
5. portable blue-tooth audio amplifier according to claim 4, is characterized in that: described main circuit also comprises NFC communication module circuit, and described NFC communication module circuit is electrically connected with master chip control circuit.
6. portable blue-tooth audio amplifier according to claim 1, is characterized in that: described power module circuitry also comprises D.C. regulated power supply, and D.C. regulated power supply is connected with lithium battery.
7. portable blue-tooth audio amplifier according to claim 1, is characterized in that: described output loading is covered with low frequency vibrating diaphragm.
CN201420536839.2U 2014-09-18 2014-09-18 Portable blue-tooth audio amplifier Active CN204069303U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420536839.2U CN204069303U (en) 2014-09-18 2014-09-18 Portable blue-tooth audio amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420536839.2U CN204069303U (en) 2014-09-18 2014-09-18 Portable blue-tooth audio amplifier

Publications (1)

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CN204069303U true CN204069303U (en) 2014-12-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420536839.2U Active CN204069303U (en) 2014-09-18 2014-09-18 Portable blue-tooth audio amplifier

Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106454623A (en) * 2016-10-24 2017-02-22 深圳市赛音电子有限公司 High-power loudspeaker box

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106454623A (en) * 2016-10-24 2017-02-22 深圳市赛音电子有限公司 High-power loudspeaker box

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