CN105611473A - Diaphragm-voice coil assembly and system and method for adjusting balance of vibrating voice coil - Google Patents
Diaphragm-voice coil assembly and system and method for adjusting balance of vibrating voice coil Download PDFInfo
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- CN105611473A CN105611473A CN201610184224.1A CN201610184224A CN105611473A CN 105611473 A CN105611473 A CN 105611473A CN 201610184224 A CN201610184224 A CN 201610184224A CN 105611473 A CN105611473 A CN 105611473A
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- voice coil
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- vibrating diaphragm
- diaphragm
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2209/00—Details of transducers of the moving-coil, moving-strip, or moving-wire type covered by H04R9/00 but not provided for in any of its subgroups
- H04R2209/022—Aspects regarding the stray flux internal or external to the magnetic circuit, e.g. shielding, shape of magnetic circuit, flux compensation coils
Abstract
The invention discloses a diaphragm-voice coil assembly and system and a method for adjusting the balance of a vibrating voice coil. The diaphragm-voice coil assembly comprises a diaphragm, a vibrating voice coil and a magnetic sensor, wherein the diaphragm comprises a diaphragm body and a DOME fixed on the plane portion of the diaphragm body; the vibrating voice coil is fixed on one side of the diaphragm body; and the magnetic sensor can measure and acquire magnetic induction intensity, and is fixed on the diaphragm. The magnetic sensor capable of acquiring the magnetic induction intensity is arranged on the diaphragm of the diaphragm-voice coil assembly, the relative position of the vibrating voice coil in a magnetic gap can be monitored via the magnetic induction intensity, and the relative position of the vibrating voice coil in the magnetic gap can be adjusted according to the position information of the vibrating voice coil by changing the pressure in a rear vocal cavity or changing the direct current in audio signals or the like, so that a loudspeaker is maintained in a lowest distortion state.
Description
Technical field
The present invention relates to acoustic product field, more specifically, relate to a kind of vibrating diaphragm-voice coil loudspeaker voice coil assembly, shouldBy the vibrating diaphragm-voice coil systems of this vibrating diaphragm-voice coil loudspeaker voice coil assembly, and a kind of side that regulates vibrating voice coil balanceMethod.
Background technology
Loudspeaker is as a kind of microphone device for electronic products such as mobile phone, TV, computers, quiltBe widely used in people's daily production and life. Current common loudspeaker mainly contains moving-coil type and raisesSound device, electromagnetic loudspeaker, condenser loudspeaker, piezo-electric loudspeaker etc., moving-coil type is wherein raisedSound device because of have making relatively simple, with low cost, have features such as good low frequency sounding advantage.
Existing coil-moving speaker is called again coil-moving speaker module, and it generally includes loudspeaker mouldGroup housing and loudspeaker monomer, wherein the typical structure of loudspeaker module casing comprises upper casing and lower casing,Upper casing and lower casing are assembled together and have formed the cavity for accommodating loudspeaker monomer, and loudspeaker monomer is fixedPosition is in cavity, and cavity is divided into the front operatic tunes and the rear operatic tunes by loudspeaker monomer. The allusion quotation of loudspeaker monomerType structure involving vibrations system, magnetic circuit system and accessory system, above-mentioned accessory system comprises accommodating shakesThe shell of moving system and magnetic circuit system, above-mentioned vibrational system comprises vibrating diaphragm and is fixed on shaking of vibrating diaphragm one sideMoving voice coil loudspeaker voice coil, vibrating diaphragm comprises again vibrating diaphragm body and is fixed on the DOME (ball top) on vibrating diaphragm body,The folding of the recessed or male structure that vibrating diaphragm body comprises the fixed part fixing with shell, be wholely set with fixed partRing portion and be positioned at the planar portions of ring portion; Above-mentioned magnetic circuit system comprises basin frame, is fixed on basin frameCentring magnet, limit magnet and washer; Above-mentioned accessory system comprises shell; Centring magnet and limit magnet itBetween be provided with gap, be referred to as magnetic gap, vibrating voice coil is suspended in magnetic gap.
Because the relative position of vibrating voice coil in magnetic gap can have influence on the vibration of membrane of shaking, thus impactTo the acoustical behavior of loudspeaker, the relative position of vibrating voice coil in magnetic gap is not good will cause loudspeakerProduce serious distortion. And be limited to the impact of preparation technology and environment, the variation of such as ambient pressure etc.,The relative position of vibrating voice coil in magnetic gap cannot remain on optimal location, thereby cannot ensure to raise one's voiceDevice maintains minimum distortion state.
Summary of the invention
An object of the present invention is to provide a kind of vibrating diaphragm-voice coil loudspeaker voice coil assembly, this vibrating diaphragm-voice coil loudspeaker voice coil assembly can spiritLive and adjust the relative position of vibrating voice coil in magnetic gap, to ensure that loudspeaker maintains minimum distortion shapeState.
According to a first aspect of the invention, provide a kind of vibrating diaphragm-voice coil loudspeaker voice coil assembly, comprised vibrating diaphragm, shakeMoving voice coil loudspeaker voice coil and Magnetic Sensor, wherein, described vibrating diaphragm comprises vibrating diaphragm body and is fixed on described vibrating diaphragm bodyPlanar portions on DOME, described vibrating voice coil is fixed on a side of described vibrating diaphragm body, described magneticMagnetic induction intensity can be measured and gather to sensor, and described Magnetic Sensor is fixed on described vibrating diaphragm.
Preferably, described Magnetic Sensor is Hall element, and described Hall element comprises hall sensingDevice body and the sensor winding displacement being connected with described Hall element body.
Preferably, described Hall element body is positioned at the center of the planar portions of described vibrating diaphragm bodyOn.
More preferably, described DOME is located at the magnetic circuit system of described vibrating diaphragm body away from loudspeaker monomerOne side of system, described Hall element body is fixed on described DOME away from one of described vibrating diaphragm bodyIn side, described sensor winding displacement comprises four, and four described sensor winding displacements are positioned at described vibrating diaphragm originallyOne side, also described sensor winding displacement and the described Hall element body of the contiguous described magnetic circuit system of body connectThe one end connecing successively in described vibrating diaphragm body and described DOME through with described Hall element thisBody is connected.
Further, described vibrating voice coil is provided with two voice coil loudspeaker voice coils that are connected with described vibrating voice coil and drawsLine, two described voice coil leads respectively from the short side of described vibrating voice coil towards away from described vibrating voice coilDirection extend, four described sensor winding displacements extend towards different described voice coil leads directions between two.
Further, four described sensor winding displacements are symmetrical arranged between two.
Another object of the present invention is to provide a kind of vibrating diaphragm-voice coil systems, this vibrating diaphragm-voice coil systemsCan the relative position of automatic calibration vibrating voice coil in magnetic gap, ensure that loudspeaker remains on minimum at any timeDistortion status.
According to a second aspect of the invention, provide a kind of vibrating diaphragm-voice coil systems, comprised of the present inventionVibrating diaphragm-voice coil loudspeaker voice coil assembly and processing unit, described processing unit can receive the magnetic that described magnetic inductor collectsThe signal of induction, and according to described magnetic induction intensity obtain vibrating voice coil in magnetic gap relativelyPosition, and the optimal location in magnetic gap and described relative position obtain needs according to vibrating voice coilAdd the DC current parameter in audio signal, send in addition corresponding described DC current parameter straightStream electric current adds the signal in the input current of vibrating voice coil, to adjust vibrating voice coil in magnetic gapRelative position.
Of the present invention also have an object to be to provide a kind of method that regulates vibrating voice coil balance, to adjustThe relative position of whole vibrating voice coil in magnetic gap, thus loudspeaker is maintained to minimum distortion state.
According to a second aspect of the invention, provide a kind of method that regulates vibrating voice coil balance, comprisedFollowing steps:
(1) magnetic induction intensity in somewhere on collection vibrating diaphragm;
(2), according to described magnetic induction intensity, obtain the relative position of vibrating voice coil in magnetic gap;
(3) optimal location in magnetic gap and described relative position according to vibrating voice coil, obtains and needsAdd the DC current parameter in audio signal;
(4) DC current corresponding to described DC current parameter added to the input current of vibrating voice coilIn, adjust the relative position of vibrating voice coil in magnetic gap.
Preferably, described step (1) is specially:
Gather the magnetic induction intensity of the center of the planar portions of vibrating diaphragm.
Preferably, described step (3) is specially:
Dynamic optimal position according to vibrating voice coil in magnetic gap and described relative position, obtain needsAdd the DC current parameter in audio signal; Wherein,
Described dynamic optimal position obtains by the following method:
The magnetic induction intensity in somewhere on collecting work ambient parameter and vibrating diaphragm;
Quiet according to described working environment parameter, described magnetic induction intensity and vibrating voice coil in magnetic gapState optimal location, obtains the dynamic optimal position of vibrating voice coil in magnetic gap.
The present inventor finds, in the prior art, really exists because vibrating voice coil is at magnetic gapIn the not good loudspeaker serious distortion problem causing of relative position. Therefore, the present invention will realizeTechnical assignment or technical problem to be solved are that those skilled in the art never expect or do not haveAnticipate, therefore the present invention is a kind of new technical scheme.
A beneficial effect of the present invention is, vibrating diaphragm-voice coil loudspeaker voice coil assembly of the present invention arranges on vibrating diaphragmA Magnetic Sensor that can gather magnetic induction intensity, because vibrating voice coil and vibrating diaphragm are fixed together,Therefore be arranged on the magnetic induction intensity that the Magnetic Sensor on vibrating diaphragm collects relevant to the position of vibrating voice coilConnection, can monitor the relative position of vibrating voice coil in magnetic gap by magnetic induction intensity, according to vibrationThe positional information of voice coil loudspeaker voice coil just can be by demand, by changing the pressure in the rear operatic tunes or changing in audio signalThe mode such as DC current adjust the relative position of vibrating voice coil in magnetic gap, ensure loudspeaker dimensionBe held in minimum distortion state.
Another beneficial effect of the present invention is, the processing unit of vibrating diaphragm-voice coil systems of the present inventionThe signal that can receive the magnetic induction intensity that magnetic inductor collects, automatic calibration vibrating voice coil is at magnetic gapIn relative position, realize the dynamic equilibrium of the relative position of vibrating voice coil in magnetic gap.
Another beneficial effect of the present invention is, the method for adjusting vibrating voice coil balance of the present invention canOptimal location by vibrating voice coil in magnetic gap and relative position obtain DC current parameter, andIn audio signal, add DC current composition to adjust the relative position of vibrating voice coil in magnetic gap,To make loudspeaker maintain minimum distortion state.
By the detailed description to exemplary embodiment of the present invention referring to accompanying drawing, of the present invention itsIt is clear that its feature and advantage thereof will become.
Brief description of the drawings
The accompanying drawing that is bonded in description and form a part for description shows reality of the present inventionExecute example, and be used from and explain principle of the present invention together with its explanation one.
Fig. 1 is the structural representation at vibrating diaphragm-voice coil loudspeaker voice coil assembly embodiment of the present invention mono-visual angle;
Fig. 2 is the structural representation at another visual angle of vibrating diaphragm-voice coil loudspeaker voice coil assembly embodiment of the present invention;
Fig. 3 is the explosive view of vibrating diaphragm-voice coil loudspeaker voice coil assembly embodiment of the present invention;
Fig. 4 is the electrical schematics of vibrating diaphragm-voice coil systems embodiment of the present invention;
Fig. 5 is the flow chart that the present invention regulates the embodiment of the method for vibrating voice coil balance.
In figure, indicate as follows:
Vibrating diaphragm-1, vibrating diaphragm body-11, DOME-12, vibrating voice coil-2, voice coil leads-21, HallSensor body-3, sensor winding displacement-4.
Detailed description of the invention
Describe various exemplary embodiment of the present invention in detail now with reference to accompanying drawing. It should be noted that:Unless illustrate in addition, otherwise the positioned opposite of the parts of setting forth in these embodiments and step,Numeral expression formula and numerical value do not limit the scope of the invention.
Be illustrative to the description only actually of at least one exemplary embodiment below, never doFor any restriction to the present invention and application or use.
May not beg in detail for the known technology of person of ordinary skill in the relevant, method and apparatusOpinion, but in suitable situation, described technology, method and apparatus should be regarded as a part for description.
In all examples with discussing shown here, any occurrence should be construed as merely exampleProperty, instead of as restriction. Therefore, other example of exemplary embodiment can have differentValue.
It should be noted that: in similar label and letter accompanying drawing below, represent similar terms, therefore, oneIn a certain Xiang Yi of a dawn accompanying drawing, be defined, in accompanying drawing subsequently, do not need it to carry out furtherDiscuss.
Produce tight in order to solve the not good loudspeaker causing of the relative position of vibrating voice coil in magnetic gapThe heavily problem of distortion, the present invention proposes a kind of vibrating diaphragm-voice coil loudspeaker voice coil assembly, as shown in Figure 1 to Figure 3, and bagDraw together vibrating diaphragm 1, vibrating voice coil 2 and Magnetic Sensor, wherein, described vibrating diaphragm 1 comprises vibrating diaphragm body 11 HesBe fixed on the DOME12 in the planar portions of described vibrating diaphragm body 11, described vibrating voice coil 2 is fixed on instituteState a side of vibrating diaphragm body 11, magnetic induction intensity can be measured and gather to described Magnetic Sensor, and described magneticSensor is fixed on described vibrating diaphragm 1, and above-mentioned Magnetic Sensor refers in particular to magnetic induction sensor, and it can be measuredMagnetic field in space, can adopt the realizations such as Hall element in actual applications.
Magnetic sensing intensity in the present invention can detect and collect the magnetic induction intensity of its bearing, due toThe position when vibration of magnetic induction intensity and vibrating diaphragm 1 is relevant, therefore can be obtained and be shaken by magnetic induction intensityThe position of film 1 in vibration processes, it will be apparent to those skilled in the art that vibrating diaphragm 1 and vibrating voice coil2 both be fixed together, and then vibration together of vibrating voice coil 2 in the time that vibrating diaphragm 1 vibrates, therefore this magneticInduction is together with the direct correlation of the position of vibrating voice coil 2, and that is to say can by magnetic induction intensityLearn the relative position of vibrating voice coil 2 in magnetic gap. Obtain vibrating voice coil 2 according to magnetic induction intensityThe process of the relative position in magnetic gap can be determined according to the actual requirements, or realize by following manner:Set up the relation table of a magnetic induction intensity and the relative position of vibrating voice coil 2 in magnetic gap, this tableCan draw or calculate by experiment, can be checked under a certain magnetic induction intensity value by this table, shakeThe relative position of moving voice coil loudspeaker voice coil 2 in magnetic gap, for example, in the time that magnetic induction intensity is determined, can be by this tableCheck in the parameter of the relative position of a vibrating voice coil 2 in magnetic gap.
After the structure of loudspeaker module is fixed, vibrating voice coil 2 has an optimal location in magnetic gap,Can ensure that at the vibrating voice coil at this optimal location place speaker is in minimum distortion state. Thus, abilityField technique personnel are the relative position in magnetic gap according to the vibrating voice coil 2 obtaining, and just can adopt multipleMode is adjusted the relative position of vibrating voice coil 2, to make vibrating voice coil 2 return optimal location, onState the mode of the relative position of adjusting vibrating voice coil 2 and can adopt realization with the following method: by changing rear soundPressure in chamber is adjusted the position of vibrating diaphragm 1, adjusts vibrating voice coil 2 in magnetic gap thereby reachThe object of relative position; Or in the audio signal of input loudspeaker, add certain flip-flop,Vibration displacement when change vibrating diaphragm 1 vibrates along the direction of the planar portions perpendicular to vibrating diaphragm 1, thus reachTo the object of adjusting the relative position of vibrating voice coil 2 in magnetic gap. Certainly those skilled in the art,Also can adopt other to change the vibrating voice coil that makes of the vibration of vibrating diaphragm 1 and/or the position of vibrating voice coil 22 in magnetic gap in optimal location.
Vibrating diaphragm-voice coil loudspeaker voice coil assembly of the present invention is provided with one on vibrating diaphragm 1 can gather magnetic induction intensityMagnetic Sensor, because vibrating voice coil 2 and vibrating diaphragm 1 are fixed together, is therefore arranged on vibrating diaphragm 1The magnetic induction intensity that Magnetic Sensor collects is associated with the position of vibrating voice coil 2, by magnetic inductionIntensity can be monitored the relative position of vibrating voice coil 2 in magnetic gap, according to the position letter of vibrating voice coil 2Breath just can be by demand, by changing the pressure in the rear operatic tunes or changing DC current in audio signal etc.Mode is adjusted the relative position of vibrating voice coil 2 in magnetic gap, ensures that loudspeaker maintains minimum mistakeTrue state.
Because Hall element is simple in structure, highly sensitive, therefore, in a preferred reality of the present inventionExecute in example, described Magnetic Sensor is Hall element, and described Hall element comprises that Hall element originallyBody 3 and the sensor winding displacement 4 being connected with described Hall element body 3. Above-mentioned Hall element originallyBody 3 can be located on the vibrating diaphragm body 11 or DOME12 of vibrating diaphragm 1 by demand, and sensor winding displacement 4 alsoCan under the prerequisite that few and other parts are interfered as far as possible, arrange by demand.
Further, in order to obtain more accurately the relative position of vibrating voice coil 2 in magnetic gap, instituteState on the center of planar portions that Hall element body 3 is positioned at described vibrating diaphragm body 11, Hall passesIt is for example that gluing mode is fixed on vibrating diaphragm body 11 that sensor body 3 can adopt.
Further, in another preferred embodiment of the present invention, described DOME12 is located at instituteState the side of vibrating diaphragm body 11 away from the magnetic circuit system of loudspeaker monomer, described Hall element body 3Be fixed in the side of described DOME12 away from described vibrating diaphragm body 11 described sensor winding displacement 4Comprise four, and four described sensor winding displacements 4 are positioned at the contiguous described magnetic circuit of described vibrating diaphragm body 11 systemOne side of system, one end that also described sensor winding displacement 4 is connected with described Hall element body 3 are successivelyIn described vibrating diaphragm body 11 and described DOME12 through with described Hall element body 3 phasesConnect, certainly, need to be to carrying out close through place while passing in the sensor winding displacement 4 self-vibration membrane bodies 11Envelope. Because the intensity of DOME12 self is higher, therefore more easily by solid Hall element body 3Fixed on it, and the arrangement of the sensor winding displacement 4 is conducive to avoid and circumferential component phaseInterfere, this kind of layout also can be obtained the relative position of vibrating voice coil 2 in magnetic gap more accurately.
Further, described vibrating voice coil 2 is provided with two sounds that are connected with described vibrating voice coil 221, two described voice coil leads 21 of circle lead-in wire respectively from the short side of described vibrating voice coil 2 towards away fromThe direction of described vibrating voice coil 2 is extended, and four described sensor winding displacements 4 are between two described in differentVoice coil leads 21 directions are extended, and this arrangement is conducive to the more convenient rows of sensors of arranging in the time producingLine 4 and voice coil leads 21. In addition, as shown in Figure 2, wall scroll sensor winding displacement 4 preferably can clothBe set to the shape of the adjacent two edges formation of rhombus, and the bending place of above-mentioned shape is positioned at vibrating voice coil2 positions that are connected with vibrating diaphragm body 11.
For 4, four described sensor winding displacements 4 of placement sensor winding displacement more easily between two symmetry establishPut.
As shown in Figure 4, the present invention also provides a kind of vibrating diaphragm-voice coil systems, comprises of the present invention shakingFilm-voice coil loudspeaker voice coil assembly and processing unit, described processing unit can receive the magnetic strength that described magnetic inductor collectsAnswer the signal of intensity, and according to described magnetic induction intensity obtain vibrating voice coil 2 in magnetic gap relativelyPosition, and the optimal location in magnetic gap and described relative position obtain need according to vibrating voice coil 2Add the DC current parameter in audio signal, send in addition corresponding described DC current parameterDC current adds the signal in the input current of vibrating voice coil 2, to adjust vibrating voice coil 2 between magneticRelative position in gap. Above-mentioned processing unit can be the equipment such as central processing unit (CPU) and implements, onState optimal location and refer to speaker vibrating voice coil 2 position in magnetic gap in the time of minimum distortion statePut.
The process that obtains the relative position of vibrating voice coil 2 in magnetic gap according to magnetic induction intensity can basisActual demand is determined, or is realized by following manner: set up a magnetic induction intensity and vibrating voice coil 2The relation table of the relative position in magnetic gap, this table can be drawn or be calculated by experiment, byThis table can check under a certain magnetic induction intensity value, the relative position of vibrating voice coil 2 in magnetic gap,For example, in the time that magnetic induction intensity is determined, can check in a vibrating voice coil 2 in magnetic gap by this tableThe parameter of relative position. In addition the optimal location in magnetic gap and phase contraposition according to vibrating voice coil 2,Putting the process of obtaining the DC current parameter that need to add in audio signal can determine according to the actual requirements,Or realize in the following way: set up optimal location, the vibration of a vibrating voice coil 2 in magnetic gapThe relative position of voice coil loudspeaker voice coil 2 in magnetic gap and the relation table of DC current parameter, this table can be by testingGo out or calculate, can check in the phase contraposition in magnetic gap at a certain vibrating voice coil 2 by this tablePut under parameter, the optimal location of vibrating voice coil 2 in magnetic gap and the corresponding relation of DC current parameter,For example, in the time of the Relative position determination of vibrating voice coil 2 in magnetic gap, can by this table check in one withThe DC current parameter that the optimal location of vibrating voice coil 2 in magnetic gap is corresponding.
In the audio signal of input loudspeaker, add certain flip-flop, can change vibrating diaphragm 1 alongVibration displacement during perpendicular to the direction vibration of the planar portions of vibrating diaphragm 1, thus reach adjustment vibrating voice coilThe object of 2 relative positions in magnetic gap.
The processing unit of vibrating diaphragm-voice coil systems of the present invention can receive the magnetic induction that magnetic inductor collectsThe signal of intensity, the relative position of automatic calibration vibrating voice coil 2 in magnetic gap, realizes vibrating voice coilThe dynamic equilibrium of 2 relative positions in magnetic gap.
As shown in Figure 5, the present invention also provides a kind of method that regulates vibrating voice coil balance, comprise asLower step:
(1) magnetic induction intensity in somewhere on collection vibrating diaphragm, above-mentioned collection magnetic induction intensity can adoptThe mode of establishing a Magnetic Sensor on vibrating diaphragm realizes;
(2) according to described magnetic induction intensity, obtain the relative position of vibrating voice coil in magnetic gap,The process that obtains the relative position of vibrating voice coil in magnetic gap according to magnetic induction intensity can be according to actual needAsk definite, or realize by following manner: set up a magnetic induction intensity and vibrating voice coil at magnetic gapIn the relation table of relative position, this table can be drawn or be calculated by experiment, by this Biao KechaMust be under a certain magnetic induction intensity value, the relative position of vibrating voice coil in magnetic gap, for example, work as magnetic strengthWhile answering intensity to determine, can be checked in by this table the ginseng of the relative position of a vibrating voice coil in magnetic gapNumber;
(3) optimal location in magnetic gap and described relative position according to vibrating voice coil, obtains and needsAdd the DC current parameter in audio signal, the optimal location according to vibrating voice coil in magnetic gapThe process of obtaining the DC current parameter that need to add in audio signal with relative position can be according to actual needAsk definite, or realize in the following way: set up the optimal location of a vibrating voice coil in magnetic gap,The relative position of vibrating voice coil in magnetic gap and the relation table of DC current parameter, this table can be by testingDraw or calculate, can check in the phase contraposition in magnetic gap at a certain vibrating voice coil by this tablePut under parameter, the optimal location of vibrating voice coil in magnetic gap and the corresponding relation of DC current parameter,For example, in the time of the Relative position determination of vibrating voice coil in magnetic gap, can by this table check in one with shakeDC current parameter corresponding to optimal location of moving voice coil loudspeaker voice coil in magnetic gap;
(4) DC current corresponding to described DC current parameter added to the input current of vibrating voice coilIn, adjust the relative position of vibrating voice coil in magnetic gap, in the audio signal of input loudspeaker, addEnter certain flip-flop, can change vibrating diaphragm along direction when vibration of the planar portions perpendicular to vibrating diaphragmVibration displacement, thus reach the object of adjusting the relative position of vibrating voice coil in magnetic gap.
Certainly, those skilled in the art can easily expect, above-mentioned steps (1) is capable of circulation to (4),So that loudspeaker is all the time in minimum distortion state.
The method of adjusting vibrating voice coil balance of the present invention can by vibrating voice coil in magnetic gapExcellent position and relative position obtain DC current parameter, and in audio signal, add DC current to becomeDivide to adjust the relative position of vibrating voice coil in magnetic gap, to make loudspeaker maintain minimum distortionState.
In order to obtain more accurately the relative position of vibrating voice coil in magnetic gap, described step (1)Be specially:
Gather the magnetic induction intensity of the center of the planar portions of vibrating diaphragm.
Because the optimal location of vibrating voice coil can be subject to the impact of working environment when the speaker operation, because ofThe described step (3) of the method for this adjusting vibrating voice coil balance of the present invention specifically preferably can be:
Dynamic optimal position according to vibrating voice coil in magnetic gap and described relative position, obtain needsAdd the DC current parameter in audio signal, above-mentioned dynamic optimal position refers to speaker operation conditionLower speaker is the position of vibrating voice coil in magnetic gap in the time of minimum distortion state, according to vibrating voice coilDynamic optimal position and relative position in magnetic gap obtain the direct current that need to add in audio signalThe process of stream parameter can be determined according to the actual requirements, or realize in the following way: set up a vibrationDynamic optimal position, vibrating voice coil relative position and the direct current in magnetic gap of voice coil loudspeaker voice coil in magnetic gapThe relation table of current parameters, this table can be drawn or be calculated by experiment, can be checked in by this tableUnder the relative position parameter of a certain vibrating voice coil in magnetic gap, vibrating voice coil in magnetic gap dynamicallyThe corresponding relation of optimal location and DC current parameter, for example when vibrating voice coil in magnetic gap relativelyWhen location positioning, can by this table check in one with vibrating voice coil the dynamic optimal position in magnetic gapCorresponding DC current parameter; Wherein,
Described dynamic optimal position obtains by the following method:
The magnetic induction intensity in somewhere on collecting work ambient parameter and vibrating diaphragm, above-mentioned working environment parameterRefer to and the parameter of speaker operation environmental correclation, for example working environment air pressure, working environment humidity orOr working environment magnetic field etc., the process of collecting work ambient parameter can be passed through such as air pressure of existing equipmentSensor equipment is realized, and above-mentioned collection magnetic induction intensity can adopt and on vibrating diaphragm, establish a Magnetic SensorMode realizes;
Quiet according to described working environment parameter, described magnetic induction intensity and vibrating voice coil in magnetic gapState optimal location, obtains the dynamic optimal position of vibrating voice coil in magnetic gap, above-mentioned static optimum positionAfter putting and referring to that loudspeaker creates, can ensure vibrating voice coil under the minimum distortion status condition of loudspeakerTheoretical optimal location in magnetic gap, according to working environment parameter, magnetic induction intensity, vibrating voice coilThe process of the static optimal location in magnetic gap and the vibrating voice coil dynamic optimal position in magnetic gapCan determine according to the actual requirements, or realize in the following way: set up a working environment parameter, magneticStatic optimal location in magnetic gap of induction, vibrating voice coil and vibrating voice coil are in magnetic gapThe relation table of dynamic optimal position, this table can be drawn or be calculated by experiment, by this Biao KechaMust be under a certain magnetic induction intensity, working environment parameter, the vibrating voice coil static state optimum in magnetic gapPosition and the vibrating voice coil dynamic optimal position corresponding relation in magnetic gap, for example, work as magnetic induction intensityWhen static optimal location with vibrating voice coil in magnetic gap is determined, can check in one and work by this tableMake the dynamic optimal location parameter of vibrating voice coil corresponding to ambient parameter in magnetic gap.
It should be noted that, in the technical program, based on the technical merit in current industry, the applicationThe embodiment that emphasis is fixed on vibrating diaphragm (comprising DOME) Magnetic Sensor is protected, but withThe continuous innovations and breakthroughs of research staff in the development of technology and field, Magnetic Sensor is fixedEmbodiment on vibrating voice coil is not yet got rid of and can be realized, but the complexity and the skill that just operateArt actual effect, is fixed in and on vibrating diaphragm (comprising DOME), remains the side relatively optimizingFormula.
Although by example, specific embodiments more of the present invention are had been described in detail,It should be appreciated by those skilled in the art, above example is only in order to describe, instead of in order to limitMake scope of the present invention. It should be appreciated by those skilled in the art, can not depart from the scope of the present inventionIn the situation of spirit, above embodiment is modified. Scope of the present invention is by claimsLimit.
Claims (10)
1. vibrating diaphragm-voice coil loudspeaker voice coil assembly, is characterized in that, comprises vibrating diaphragm, vibrating voice coil and magnetic sensingDevice, wherein, described vibrating diaphragm comprises vibrating diaphragm body and is fixed in the planar portions of described vibrating diaphragm bodyDOME, described vibrating voice coil is fixed on a side of described vibrating diaphragm body, and described Magnetic Sensor can be measuredAnd gather magnetic induction intensity, and described Magnetic Sensor is fixed on described vibrating diaphragm.
2. vibrating diaphragm-voice coil loudspeaker voice coil assembly according to claim 1, is characterized in that, described magnetic sensingDevice is Hall element, described Hall element comprise Hall element body and with described hall sensingThe sensor winding displacement that device body is connected.
3. vibrating diaphragm-voice coil loudspeaker voice coil assembly according to claim 2, is characterized in that, described Hall passesSensor body is positioned on the center of planar portions of described vibrating diaphragm body.
4. vibrating diaphragm-voice coil loudspeaker voice coil assembly according to claim 2, is characterized in that described DOMEBe located at the side of described vibrating diaphragm body away from the magnetic circuit system of loudspeaker monomer, described Hall element originallyBody is fixed in the side of described DOME away from described vibrating diaphragm body, and described sensor winding displacement comprises fourBar, and four described sensor winding displacements be positioned at the contiguous described magnetic circuit system of described vibrating diaphragm body a side,And one end that described sensor winding displacement is connected with described Hall element body is successively from described vibrating diaphragm bodyWith in described DOME through to be connected with described Hall element body.
5. vibrating diaphragm-voice coil loudspeaker voice coil assembly according to claim 4, is characterized in that described vebratoCircle is provided with two voice coil leads that are connected with described vibrating voice coil, and two described voice coil leads respectively certainlyThe short side of described vibrating voice coil is extended towards the direction away from described vibrating voice coil, four described sensorsWinding displacement extends towards different described voice coil leads directions between two.
6. according to the vibrating diaphragm-voice coil loudspeaker voice coil assembly described in claim 4 or 5, it is characterized in that four institutesStating sensor winding displacement is symmetrical arranged between two.
7. vibrating diaphragm-voice coil systems, is characterized in that, comprises in claim 1 to 5 any oneDescribed vibrating diaphragm-voice coil loudspeaker voice coil assembly and processing unit, described processing unit can receive described magnetic inductor collectionThe signal of the magnetic induction intensity arriving, and obtain vibrating voice coil in magnetic gap according to described magnetic induction intensityRelative position, and the optimal location in magnetic gap and described relative position obtain according to vibrating voice coilGet the DC current parameter that need to add in audio signal, send in addition described DC current parameter pairThe DC current of answering adds the signal in the input current of vibrating voice coil, to adjust vibrating voice coil between magneticRelative position in gap.
8. a method that regulates vibrating voice coil balance, is characterized in that, comprises the steps:
(1) magnetic induction intensity in somewhere on collection vibrating diaphragm;
(2), according to described magnetic induction intensity, obtain the relative position of vibrating voice coil in magnetic gap;
(3) optimal location in magnetic gap and described relative position according to vibrating voice coil, obtains and needsAdd the DC current parameter in audio signal;
(4) DC current corresponding to described DC current parameter added to the input current of vibrating voice coilIn, adjust the relative position of vibrating voice coil in magnetic gap.
9. method according to claim 8, is characterized in that, described step (1) is specially:
Gather the magnetic induction intensity of the center of the planar portions of vibrating diaphragm.
10. method according to claim 8, is characterized in that, described step (3) is concreteFor:
Dynamic optimal position according to vibrating voice coil in magnetic gap and described relative position, obtain needsAdd the DC current parameter in audio signal; Wherein,
Described dynamic optimal position obtains by the following method:
The magnetic induction intensity in somewhere on collecting work ambient parameter and vibrating diaphragm;
Quiet according to described working environment parameter, described magnetic induction intensity and vibrating voice coil in magnetic gapState optimal location, obtains the dynamic optimal position of vibrating voice coil in magnetic gap.
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