CN107277679A - A kind of close contact wireless sound box - Google Patents
A kind of close contact wireless sound box Download PDFInfo
- Publication number
- CN107277679A CN107277679A CN201710679749.7A CN201710679749A CN107277679A CN 107277679 A CN107277679 A CN 107277679A CN 201710679749 A CN201710679749 A CN 201710679749A CN 107277679 A CN107277679 A CN 107277679A
- Authority
- CN
- China
- Prior art keywords
- close contact
- sound box
- wireless sound
- casing
- module
- Prior art date
- 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.)
- Withdrawn
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Classifications
-
- 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
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2430/00—Signal processing covered by H04R, not provided for in its groups
Abstract
The invention provides a kind of close contact wireless sound box, including casing, casing upper surface is provided with U-shaped groove, and two sides of U-shaped groove are magnetic induction region；Two long side surfaces of casing are provided with speaker area, and a broad side surface of casing is provided with external interface region, and external interface region includes power switch, Micro USB interfaces and 3.5mm earphone interfaces；Tank surface is located between speaker area and external interface region provided with a circle LED light, LED light；Box house is provided with circuit board, and circuit board includes pre-amplifying module, equalizer module, power amplifier module, processor module and power management module.The present invention utilizes near field magnetic coupling induction technology, is transmitted by voice data so that every have the mobile device of built-in loudspeaker, as long as being placed at the U-shaped groove of audio amplifier with regard to that can play music, without being loaded further with any software or doing any setting.
Description
Technical field
The present invention relates to wireless sound box technical field, more particularly to a kind of close contact wireless sound box.
Background technology
Wireless sound box is general so that wireless transmission method replaces traditional wire transmission means and must claim, and the connection for eliminating line can
Wirelessly to enjoy.It is wireless that the 2.4G wireless sound boxes of FM wireless sound boxes and high cost from early stage low cost develop into current bluetooth
Audio amplifier and Wifi wireless sound boxes, and bluetooth wireless sound box is in price, anti-jamming effectiveness, tonequality and the portability and generality used
Received by consumers in general, thus it is most based on bluetooth wireless sound box currently on the market.
But bluetooth wireless sound box is required for matching bluetooth with mobile device before the use, operation is comparatively laborious, for
Old man children etc. can less play relatively difficult for the people of mobile device, and people's rhythm of life is substantially accelerated now, comes off duty
Go home to face a cumbersome audio amplifier, estimation there all is not mood to open.Meanwhile, the bluetooth after pairing is due to outside always
Wireless messages are dissipated, power consumption of the audio amplifier with mobile device in itself can be greatly increased, portability is influenceed.
The content of the invention
(1) technical problem solved
In order to solve the above problems, the invention provides a kind of close contact wireless sound box, without do any setting or
Person installs any software, just can play the voice data of mobile device, simple to operate, brings fast and easily music experience.
(2) technical scheme
A kind of close contact wireless sound box, including casing, the casing upper surface are provided with U-shaped groove, the U-shaped groove
Two sides be magnetic induction region；Two long side surfaces of the casing are provided with speaker area, a wide side of the casing
Face is provided with external interface region, and the external interface region includes power switch, Micro USB interfaces and 3.5mm earphone interfaces；
The tank surface is located at the speaker area and the external interface region provided with a circle LED light, the LED light
Between domain；The box house is provided with circuit board, and the circuit board includes pre-amplifying module, equalizer module, power amplification
Module, processor module and power management module.
Further, the width and height of the U-shaped groove are 2cm.
Further, the loudspeaker specification of the speaker area is：16 ohm of normal impedance, rated power 3W, output frequency
Rate 80Hz~20KHz.
Further, the power amplifier module selects ANT8821 two-channel G class audio frequency power amplifiers.
Further, the power management module includes 1000mAh Li-Ion rechargeable batteries and charging circuit.
(3) beneficial effect
The invention provides a kind of close contact wireless sound box, using near field magnetic coupling induction technology, pass through audio number
According to transmission so that every have the mobile device of built-in loudspeaker, as long as being placed at the U-shaped groove of audio amplifier with regard to music can be played, without another
Outer to load any software or do any setting, compact, exquisite appearance is simple to operate, strong interference immunity, built-in lithium battery
Endurance meets the requirement of portability enough, brings more easily music experience.
Brief description of the drawings
Fig. 1 is a kind of external structure schematic diagram of close contact wireless sound box involved in the present invention.
Fig. 2 is a kind of operation principle schematic diagram of close contact wireless sound box involved in the present invention.
Fig. 3 is a kind of 3 sections of equalizer figures of close contact wireless sound box involved in the present invention.
Fig. 4 is a kind of audio power amplifier circuit figure of close contact wireless sound box involved in the present invention.
Embodiment
Embodiment involved in the present invention is described in further details below in conjunction with the accompanying drawings.
Embodiment 1：
With reference to Fig. 1 and Fig. 2, a kind of close contact wireless sound box, including casing 1, the upper surface of casing 1 is provided with U-shaped groove
2, two sides of U-shaped groove 2 are magnetic induction region 3；Two long side surfaces of casing 1 are provided with speaker area 4, the one of casing 1
Individual broad side surface is provided with external interface region, and external interface region includes power switch 5, Micro USB interfaces 6 and 3.5mm earphones
Interface 7；The surface of casing 1 provided with a circle LED light 4, LED light 4 be located at speaker area 4 and external interface region it
Between；The inside of casing 1 is provided with circuit board, and circuit board includes pre-amplifying module, equalizer module, power amplifier module, processor
Module and power management module.
The width and height of U-shaped groove 2 are 2cm, enable mobile phone laterally disposed and will not be slided in U-shaped groove 2, convenient stand
Mobile phone, it is also kind of a good enjoyment to see a film with this audio amplifier.Both sides are designed with magnetic induction region 3 so that mobile phone is positive and negative to be placed
Can be with normal work.
The loudspeaker specification of speaker area is：16 ohm of normal impedance, rated power 3W, output frequency 80Hz~20KHz,
As common full frequency band loudspeaker specification.A loudspeaker are placed in two sides of U-shaped groove respectively, form left and right acoustic channels so that defeated
Go out with stereophonic effect, meet tonequality requirement.
Power amplifier module selects ANT8821 two-channel G class audio frequency power amplifiers, and ANT8821 is a ultralow EMI, high noise
Than two-channel G class audio frequency power amplifiers.The adaptive boosting unit of chip internal integrated multipath power rail, therefore without individually boosting
Circuit, saves PCB space.While lithium battery 3.7V power voltage supplies are supported, driving binary channels load maximum exportable 2 ×
4.5W firm powers, therefore it is well positioned to meet the loudspeaker requirement selected by the present embodiment.
Power management module include 1000mAh Li-Ion rechargeable batteries and charging circuit, using built-in 1000mAh lithiums from
Sub- rechargeable battery, supports maximum playing duration about 6 hours, and general travel requirement is met enough, when charging is required, will be supporting
Charging wire insertion Micro USB interfaces 6 be connected with external power source.
Embodiment 2：
With reference to Fig. 1 and Fig. 2, illustrate the operation principle of audio amplifier.
The loudspeaker overwhelming majority of mobile device is electromagnetism moving-coil type, is typically made up of magnet, coil, vibrating diaphragm etc..When raising one's voice
When device is powered, the electric current of change produces the magnetic field of change by coil, and this motivates the magnetic field come and the magnetic field of magnet itself
Effect, makes vibrating diaphragm produce vibration, so as to send sound.Because electromagnetic field is dispersed throughout the space around loudspeaker, therefore one
The vicinity that induction coil is placed on loudspeaker will produce electric current.
Based on this, the power switch 5 of audio amplifier is first turned on, LED light 4 starts flicker, and mobile device is laterally disposed
In U-shaped groove 2, make loudspeaker side close to magnetic induction region 3, play the music of mobile device, the line of induction in magnetic induction region 3
Circle experiences the magnetic field of mobile device loudspeaker outflow, and the magnetic field is changed into electric current, the premenstrual big circuit filtering amplification of storing, then passes through
3 sections of equalizer modulation low, middle and high frequency sections are to meet the requirement of output, and equalizer output enters processing by I/O interfaces
Device module, is divided into left and right two paths of signals, carries out dynamic modulation subsequently into audio power amplifier circuit and drives the loudspeaker of left and right acoustic channels
Work.Mobile device is moved to find volume maximum position in U-shaped groove 2, the loudspeaker one of mobile device is now kept
Side is close to magnetic induction region 3, and when volume is maximum, LED light 4 is also changed into the maximum flicker of brightness.Raised for not built-in
The audio-frequence player device of sound device, can by 3.5mm earphone interfaces 7 using tone frequency channel wire come work.
Embodiment 3：
As shown in figure 3, circuit include operational amplifier U1, triode Q1, electric capacity C1 and C2, resistance R1~R6, can power transformation
Device R7~R9 is hindered, wherein operational amplifier U1 is TL072, by adjusting variable resistance R7~R9 resistance, feasible system
Changes of the frequency f from 60Hz to 20KHz, meets the area requirement of selected loudspeaker output frequency.
Embodiment 4：
As shown in figure 4, circuit includes audio frequency power amplifier U2, inductance L1, resistance R10~R14, electric capacity C3~C9, electrochemical capacitor
C10, L channel loudspeaker SP1 and R channel loudspeaker SP2.Wherein, audio frequency power amplifier U2 is ANT8821 two-channel G class audio frequency power amplifiers, is drawn
Pin PVDD is audio power power supply, boosting output；GND is ground connection；SW is SWITCH ends；VBAT is input power；OCSET is electricity
The output current limiting protection setting of pond end；INL is audio L channel negative-phase input；INR is audio R channel negative-phase input；IPL
For audio L channel normal phase input end；IPR is audio R channel normal phase input end.
The invention provides a kind of close contact wireless sound box, using near field magnetic coupling induction technology, pass through audio number
According to transmission so that every have the mobile device of built-in loudspeaker, as long as being placed at the U-shaped groove of audio amplifier with regard to music can be played, without another
Outer to load any software or do any setting, compact, exquisite appearance is simple to operate, strong interference immunity, built-in lithium battery
Endurance meets the requirement of portability enough, brings more easily music experience.
The above-described embodiments are merely illustrative of preferred embodiments of the present invention, not to the structure of the present invention
Think and scope is defined.On the premise of design concept of the present invention is not departed from, technology of this area ordinary person to the present invention
The all variations and modifications that scheme is made, all should drop into protection scope of the present invention, claimed technology contents of the invention,
All record in detail in the claims.
Claims (5)
1. a kind of close contact wireless sound box, including casing, it is characterised in that：The casing upper surface is provided with U-shaped groove, institute
Two sides for stating U-shaped groove are magnetic induction region；Two long side surfaces of the casing are provided with speaker area, the casing
One broad side surface is provided with external interface region, and the external interface region includes power switch, Micro USB interfaces and 3.5mm
Earphone interface；The tank surface is located at the speaker area and described provided with a circle LED light, the LED light
Between external interface region；The box house is provided with circuit board, and the circuit board includes pre-amplifying module, balanced device mould
Block, power amplifier module, processor module and power management module.
2. a kind of close contact wireless sound box according to claim 1, it is characterised in that：The U-shaped groove width and
Height is 2cm.
3. a kind of close contact wireless sound box according to claim 1, it is characterised in that：The loudspeaker of the speaker area
Specification is：16 ohm of normal impedance, rated power 3W, output frequency 80Hz~20KHz.
4. a kind of close contact wireless sound box according to claim 1, it is characterised in that：The power amplifier module choosing
With ANT8821 two-channel G class audio frequency power amplifiers.
5. a kind of close contact wireless sound box according to claim 1, it is characterised in that：The power management module bag
Include 1000mAh Li-Ion rechargeable batteries and charging circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710679749.7A CN107277679A (en) | 2017-08-10 | 2017-08-10 | A kind of close contact wireless sound box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710679749.7A CN107277679A (en) | 2017-08-10 | 2017-08-10 | A kind of close contact wireless sound box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107277679A true CN107277679A (en) | 2017-10-20 |
Family
ID=60076944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710679749.7A Withdrawn CN107277679A (en) | 2017-08-10 | 2017-08-10 | A kind of close contact wireless sound box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107277679A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107493548A (en) * | 2017-09-30 | 2017-12-19 | 广州酷狗计算机科技有限公司 | Audio frequency playing method and stereo set |
| CN110248266A (en) * | 2019-06-05 | 2019-09-17 | Oppo（重庆）智能科技有限公司 | Induction earphone, electronic equipment and its wireless communication system |
-
2017
- 2017-08-10 CN CN201710679749.7A patent/CN107277679A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107493548A (en) * | 2017-09-30 | 2017-12-19 | 广州酷狗计算机科技有限公司 | Audio frequency playing method and stereo set |
| CN110248266A (en) * | 2019-06-05 | 2019-09-17 | Oppo（重庆）智能科技有限公司 | Induction earphone, electronic equipment and its wireless communication system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20171020 |
|
| WW01 | Invention patent application withdrawn after publication |