CN105105898A - Throat microphone device based on three-dimensional pressure detection and use method of throat microphone device - Google Patents

Abstract

The invention relates to a throat microphone device based on a three-dimensional pressure detection and a use method of the throat microphone device, and belongs to the technical field of microphones. The device comprises an induction part and a handheld part, wherein the induction part is arranged in a manner of being in contact with the laryngeal prominence, and a three-dimensional pressure sensor for recording a force applied by laryngeal prominence motion to the sensor and sending a stress signal is arranged in the induction part and comprises a control unit, and an X-directional capacitor unit group and a Y-directional capacitor unit group which are respectively connected with the control unit; the handheld part is wirelessly connected with the induction part; a controller and a voice unit are arranged in the handheld part; the voice unit is connected with the controller and sends a sound according to a detection signal of the induction part to provide wireless charging for the induction part. By improvement on the sensor and the combination of the controller and a modern communication protocol, a voice database is constructed, and the problems that the sensor easily generates heat during working and is large in noise in the prior art are solved; the throat microphone device has the advantage that the phenomenon of mispronouncing of the controller can be greatly reduced due to high temperature stability, low heating and perfection of the database.

Description

The laryngophone device detected based on three-dimensional pressure and using method thereof

Technical field

The invention belongs to transmitter technical field, relate to using method and the single unit system thereof of the laryngophone after improvement, be specifically related to a kind of laryngophone device based on three-dimensional pressure detection and using method thereof.

Background technology

Because the day after tomorrow is sick or mistake is taken medicine, the reasons such as thing cause the hoarse even dysphonia of throat, cause and do not want to speak or speechless case often occurs, so the degree of difficulty in order to alleviate pronunciation, continue the normality keeping life, laryngophone still has very large range of application.Laryngophone had once played very large effect in-flight in war, facilitated the interchange between pilot, reduced the interference of noise, in the modern life, still can provide technology needs according to larynx muscle fluctuating vibrations principle during pronunciation to dysphonia person.

Carbon granule formula laryngophone is utilize charcoal sand the to be obstructed active acoustic-electric transduction assembly of one that transformation characteristic makes, existing history for many years, use for many years and show, this transmitter group is highly sensitive, carrying load ability strong, but frequency response is poor, intrinsic noise is large, dynamic range is little, nonlinear distortion is large, environmental suitability is poor, service life is short and poor stability.Although used piezoelectric type transmitter to instead of traditional carbon granule formula transmitter, the easy stressed fatigue of the piezoelectric ceramic piece used in piezoelectric ceramic, and once work, easily heating up, wearer is had burn sense, reduce comfort.

Summary of the invention

According to above the deficiencies in the prior art, the present invention propose a kind of relate to based on three-dimensional pressure detect laryngophone device and using method, by improving sensor, in conjunction with controller and modern communication agreement, set up speech database, solve working sensor in prior art and easily generate heat, the problem that noise jamming is large, there is temperature stability good, the perfect phenomenon that greatly can reduce controller mispronounce that is little, data base of generating heat.

To achieve these goals, the technical scheme that the present invention takes is: a kind of laryngophone device detected based on three-dimensional pressure, described device comprises: induction part, induction part pastes to touch and arranges in Adam's apple, inside be provided with the motion of three-dimensional pressure sensor record Adam's apple be applied to the power of sensor and send stressed signal and go out, three-dimensional pressure sensor comprises control unit, the X-direction capacitor cell group be connected respectively with control unit and Y-direction capacitor cell group, described X-direction capacitor cell group and Y-direction capacitor cell group include capacitor cell module, described capacitor cell module adopts the comb teeth-shaped structure be made up of plural strip capacitor cell, each strip capacitor cell comprises the drive electrode of top crown and the induction electrode of bottom crown, Handheld Division, wireless connections induction part, is provided with controller and voice unit in Handheld Division, voice unit connection control device is sounded according to the detection signal of induction part, for induction part provides wireless charging.

In said apparatus, described induction part comprises the sensor unit detecting Adam's apple motion force vector signal and the wireless signal transmission unit transmitted, wireless signal transmission unit connecting sensor unit, three-dimensional pressure sensor is that the sensor of survey calculation three-dimensional force is positioned at sensor unit.Described capacitor cell module comprises by two or more width a ₀length b ₀strip capacitor cell composition the first strip capacitor cell group and two or more width ka ₀length b ₀strip capacitor cell composition the second strip capacitor cell group.The drive electrode of described each strip capacitor cell is identical with induction electrode width, and the length of drive electrode is greater than induction electrode length, and drive electrode length two ends are reserved left poor position δ respectively _leftwith right poor position δ _right, b _{0 drives}=b _{0 sense}+ δ _right+ δ _left, wherein, b _{0 drives}for the drive electrode length of strip capacitor cell, b _{0 sense}for the induction electrode length of strip capacitor cell, described poor position δ _left=δ _right, and wherein d ₀for strip capacitor cell dielectric thickness, G is the modulus of rigidity of elastic fluid, τ _maxfor maximum stress value.The lead-in wire that described comb teeth-shaped structure comprises more than 20 strip capacitor cells, connects one to one with strip capacitor cell, is provided with electrode spacing a between adjacent two strip capacitor cells _δ, described parallel-plate area S=M (a ₀+ 2a _δ+ ka ₀) b ₀/ 2, wherein, M is strip capacitor cell quantity, b ₀for the length of strip capacitor cell, a ₀the width of strip capacitor cell.The strip capacitor cell lead-in wire of described first strip capacitor cell group and the second strip capacitor cell group is by parallel way or be independently connected to control unit.Described Handheld Division also comprises the data base that deposits speech source data and the exercise unit for practising wearer's pronunciation, data base and practise unit and be connected on the controller.Described Handheld Division and induction part install identical communications protocol, and Handheld Division has multiplely all has installed identical communications protocol and can be connected with induction part radio communication.

A using method for laryngophone device, described method step comprises: step one, induction part paste to touch and place in Adam's apple, the first Handheld Division using selection to have operation input function; Step 2, wearer's pronunciation, the sensor in induction part detects stressed size vector signal and is transmitted into controller; Step 3, controller receive the signal of induction part, process the signal into the voice coordinate that pronounces of displacement vector composition wearer that process calculates stressed vector sensor; Step 4, repetition step 2 and three, after wearer is complete according to sound bank pronunciation exercises, under sensor record, syllable and coordinate thereof conveniently call stored in coordinate storehouse; Step 5, practised after, in routine use, wearer pronounce Adam's apple motion time, induction part records by force vector, the preliminary Speech Object of controller, called data library information contrast draw final voice messaging, send voice messaging simultaneously.

In said method, described Handheld Division has multiple, after installing the communications protocol identical with induction part, is entered by database copy, can be general.

Beneficial effect of the present invention is: the present invention is according to traditional transmitter, it is improved, three-dimensional pressure sensor is used to detect Adam's apple motion, and be provided with exercise function, during exercise pronunciation, the vector of record Adam's apple motion force forms syllable and coordinate thereof (" pronunciation " is herein not wearer's sounding truly, and refer to wearer attempt pronounce time Adam's apple motion), form data base, facilitate voice to call, so more accurately can express the meaning that wearer really expresses.And three-dimensional pressure working sensor is in stable condition, temperature stability good, heating itself is minimum, very micro-to stability influence, the comfortableness that can not use due to warming-up effect, and the method such as to pass through effectively to solve three-dimensional force and influence each other, thus make normal direction and tangential conversion all reach higher linear, precision and sensitivity.

Accompanying drawing explanation

Below the content expressed by this Figure of description and the labelling in figure are briefly described:

Fig. 1 is the work structuring block diagram of the laryngophone device of the specific embodiment of the present invention.

Fig. 2 is strip capacitor cell and the coordinate system thereof of the specific embodiment of the present invention.

Fig. 3 is the strip capacitor cell schematic diagram of the specific embodiment of the present invention.

Fig. 4 is the strip capacitor cell dextrad skew schematic diagram of the specific embodiment of the present invention.

Fig. 5 is the strip capacitor cell left-hand skew schematic diagram of the specific embodiment of the present invention.

Fig. 6 is the width of the specific embodiment of the present invention is a ₀and ka ₀electric capacity to stressed deflection graph.

Fig. 7 is the parallel-plate three-dimensional force pressure sensor structure figure of the specific embodiment of the present invention.

Fig. 8 is the signal schematic representation that the cell capacitance of the specific embodiment of the present invention is right.

Fig. 9 is the plane-parallel capacitor cross-section structure of the specific embodiment of the present invention.

Figure 10 a be the induction part of the specific embodiment of the present invention wear schematic diagram.

Figure 10 b is the stickup schematic diagram of the induction part of the specific embodiment of the present invention.

In figure, 1 is upper PCB substrate, and 2 is lower PCB substrate, and 3 is drive electrode Copper Foil, and 4 is induction electrode Copper Foil, and 5 is elastic fluid, and 6 is induction part.

Detailed description of the invention

Contrast accompanying drawing below, by the description to embodiment, the specific embodiment of the present invention is as the effect of the mutual alignment between the shape of involved each component, structure, each several part and annexation, each several part and operation principle, manufacturing process and operation using method etc., be described in further detail, have more complete, accurate and deep understanding to help those skilled in the art to inventive concept of the present invention, technical scheme.

The invention provides a kind of laryngophone device, its arrangement works schematic diagram as shown in Figure 1, microphone apparatus provided by the invention comprises Handheld Division and induction part, Handheld Division and induction part are equipped with wireless communication unit, radio communication is carried out both convenient, in Handheld Division and induction part, wireless communication protocol is installed, induction part is placed in Adam's apple place, Handheld Division can be computer, hands machine, panel computer or other smart machine of communication protocol has been installed, as long as so can guarantee that induction part is placed in Adam's apple place in the present invention, Handheld Division can be selected arbitrarily certain or change between smart machine, all can use, easy to use, carrying convenience, be dissolved in life completely and realize integration.

Induction part comprises sensor unit, wireless signal transmission unit, three-dimensional pressure sensor and peripheral circuit thereof have been installed in sensor unit, induction part is placed in Adam's apple place, when pronouncing, near the rolling of Adam's apple and Adam's apple, the vibrations of muscle group can pinch sensors, force acting on transducer exports the signal of telecommunication, and finally export the signal of telecommunication and be transmitted to Handheld Division to wireless signal transmission unit, Handheld Division crowd is provided with reception of wireless signals portion and receives wireless signal.Convenient in order to wireless signal transfer, has installed wireless communication standard protocol in wireless signal transmission unit, as long as identical communication protocol has been installed in Handheld Division, and induction part and all can carry out radio communication between Handheld Division arbitrarily.Be provided with wireless charging circuit in the peripheral circuit of sensor unit, Handheld Division provides energy support to wireless charging circuit.

The three-dimensional pressure sensor used in the present invention accurately can measure Impact direction on the direction of three-dimensional force, stressed size can be calculated according to the capacitance change in sensor, with the direction vector of Impact direction, Adam's apple motoricity when utilizing three-dimensional force coordinate record to adorn oneself with pronunciation in the present invention just thus tagged speech, thus each sound word has unique coordinate, leave phonetic symbol in lane database, store data in direct calling data storehouse when wearer needs to pronounce, degree of accuracy is higher.

The X-direction capacitor cell group that three-dimensional pressure sensor comprises control unit, be connected respectively with control unit and Y-direction capacitor cell group, described X-direction capacitor cell group and Y-direction capacitor cell group include capacitor cell module, described capacitor cell module adopts the comb teeth-shaped structure be made up of plural strip capacitor cell, and each strip capacitor cell comprises the drive electrode of top crown and the induction electrode of bottom crown.Described capacitor cell module comprises by two or more width a ₀length b ₀first strip capacitor cell group of strip capacitor cell composition and two or more width ka ₀length b ₀second strip capacitor cell group of strip capacitor cell composition.The drive electrode of described each strip capacitor cell is identical with induction electrode width, and the length of drive electrode is greater than induction electrode length, and drive electrode length two ends are reserved left poor position δ respectively _leftwith right poor position δ _right, b _{0 drives}=b _{0 sense}+ δ _right+ δ _left, wherein, b _{0 drives}for the drive electrode length of strip capacitor cell, b _{0 sense}for the induction electrode length of strip capacitor cell.Described poor position δ _left=δ _right, and wherein d ₀for dielectric thickness, G is the modulus of rigidity of elastic fluid, τ _maxfor maximum stress value.The lead-in wire that described comb teeth-shaped structure comprises more than 20 strip capacitor cells, connects one to one with strip capacitor cell, is provided with electrode spacing a between adjacent two strip capacitor cells _δ.Described parallel-plate area S=M (a ₀+ 2a _δ+ ka ₀) b ₀/ 2, wherein, M is strip capacitor cell quantity, b ₀for the length of strip capacitor cell, a ₀the width of strip capacitor cell.The strip capacitor cell lead-in wire of described first strip capacitor cell group and the second strip capacitor cell group is by parallel connection or be independently connected to control unit.The width of described strip capacitor cell wherein, d ₀for dielectric thickness, E is the Young's modulus of elastic fluid, and G is the modulus of rigidity of elastic fluid.Described first strip capacitor cell group and be provided with intermediate translator between the second strip capacitor cell group and control unit, intermediate translator is for arranging voltage to electric capacity or frequency to the transmission coefficient of electric capacity.

1, the transfer characteristic of strip capacitor cell

(1) pumping signal and coordinate system

Strip capacitor cell is placed in the rectangular coordinate system shown in Fig. 2, pole plate plane length b ₀, width a ₀, dielectric thickness d ₀.Three-dimensional simulation puts on the outer surface of capacitor plate, and the contact active force of generation has Fx, Fy and Fz tri-durection components, and the action direction of Fx and Fy is along X-axis and Y-axis, and the action direction of Fz along OZ axle namely direction, normal direction and tangential stress are a kind of stress tensor, can output capacitance respond between the lead-in wire of electrode; Normal stress σ _n=Fn/A, wherein A=a ₀b ₀for pole plate normal direction stress surface, Fn=Fz is normal component; Both side surface produces paired tangential stress τ _x=Fx/A, τ _y=Fy/A.

According to the Hooke's law in Elasticity, σ _nand τ _x, τ _yelastomer all will be made to produce corresponding distortion.Wherein,

${\mathrm{\σ}}_n=E\·{\mathrm{\ϵ}}_n=E\·{\mathrm{\δ}}_n/d_0=\frac{F_n}{A}---\left(1\right)$

$\±{\mathrm{\τ}}_x=\±{\mathrm{\γ}}_x\·\mathrm{G=}\±G\·{\mathrm{\δ}}_x/d_0=\±\frac{F_x}{A}---\left(2\right)$

$\±{\mathrm{\τ}}_y=\±{\mathrm{\γ}}_y\·\mathrm{G=}\±G\·{\mathrm{\δ}}_y/d_0=\±\frac{F_y}{A}---\left(3\right)$

In formula, E is the Young's modulus (unit: GN/m of elastic fluid ²), G is the modulus of rigidity (unit: GN/m of elastic fluid ²), δ n is the Normal Displacement (unit: μm) of elastic fluid, and δ x and δ y is the relative dislocation (unit: μm) of the upper and lower two-plate of capacitor, and its sign is pointed to by coordinate axes and determined.

(2) capacitance equation and input-output characteristic thereof

The initial capacitance of rectangular parallel plate capacitor is:

$C_0=\frac{{\mathrm{\ϵ}}_0\·{\mathrm{\ϵ}}_r\·a_0\·b_0}{d_0}---\left(4\right)$

In formula, ε ₀vacuum medium electric constant is 8.85PF/m, ε _r=2.5 is dielectric relative dielectric constant.D ₀by σ _nexcitation produce relative deformation ε _n=δ _n/ d ₀=σ _n/ E, substitutes into (4) and obtains input-output characteristic

$C_n={\mathrm{\ϵ}}_0\·{\mathrm{\ϵ}}_r\frac{a_0\·b_0}{d_0(1-{\mathrm{\ϵ}}_n)}={\mathrm{\ϵ}}_0\·{\mathrm{\ϵ}}_r\frac{a_0\·b_0}{d_0(1-\frac{F_n}{AE})}---\left(5\right)$

(3) linearity under normal stress effect and sensitivity

A, the normal direction linearity

F in (5) formula _nin the denominator, therefore C _n=f (F _n) relation be nonlinear, because of conversion range in maximum σ _nmaxcompared with dielectric resilient constant E, ε _na very little amount, i.e. ε in denominator _n<<1, (5) are omitted the higher-order shear deformation of more than quadratic power by series expansion, and (5) formula can be reduced to:

$C_n=C_0(1+\mathrm{\&epsiv;})=C_0(1+\frac{F_n}{A\&CenterDot;E})---\left(6\right)$

Visible at C _nwith F _ntransfer characteristic in the maximum relative error of the normal direction linearity close to zero.

B, sensitivity

By the definition of normal direction sensitivity

Can linear sensitivity be obtained by (6) formula,

S _n1＝C ₀/AE＝ε ₀ε _r/d ₀E(7)

By (5) formula then

$S_{n2}=\frac{{\mathrm{dC}}_n}{{\mathrm{dF}}_n}=C_0\&CenterDot;\frac{1}{1-2\mathrm{\&epsiv;}}=C_0\&CenterDot;\frac{1}{1-2\frac{F_n}{A\&CenterDot;E}}---\left(8\right)$

S _n2with F _nand become, F _nlarger, S _n2larger, in mild nonlinear in whole transfer characteristic.

(4) tangential stress τ _xand τ _ycapacitance variations under excitation

Tangential stress τ _xand τ _ydo not change the physical dimension parameter b of pole plate ₀and a ₀, to dielectric thickness d ₀also do not have an impact.But τ _xand τ _ychange the space structure of strip capacitor cell, between the upper bottom crown faced by forward, there occurs dislocation skew.Now for OX direction, pole plate is at τ _xdislocation skew δ under effect _x.

Work as τ in figure 3 _xwhen being zero, a _{on 0}=a _{0 time}just right, effective cross-section A between substrate _τ=a ₀b ₀; In the diagram, at τ _xunder the effect of dextrad, top crown creates dislocation skew δ to the right relative to bottom crown _x, thus make the effective area A between bottom crown when calculating electric capacity _τ=(a ₀-δ _x) b ₀; In Fig. 5, work as τ _xduring for left-hand, dislocation skew δ _xthen left, A _τ=(a ₀-δ _x) b ₀, τ _xwhen left-hand and dextrad, the reduction of effective area is identical, and consequent electric capacity is:

$C_{\mathrm{\&tau;}x}=\frac{{\mathrm{\&epsiv;}}_0\&CenterDot;{\mathrm{\&epsiv;}}_r\&CenterDot;(a_0-{\mathrm{\&delta;}}_x)\&CenterDot;b_0}{d_0}---\left(9\right)$

According to shearing Hooke's law

τ _x＝γ _x·G＝G·δ _x/d ₀(10)

(10) are substituted into (9) can obtain

$C_{\mathrm{\&tau;}x}=C_0-\frac{{\mathrm{\&epsiv;}}_0\&CenterDot;{\mathrm{\&epsiv;}}_r\&CenterDot;{\mathrm{\&delta;}}_x\&CenterDot;b_0}{d_0}=C_0-\frac{{\mathrm{\&epsiv;}}_0\&CenterDot;{\mathrm{\&epsiv;}}_r\&CenterDot;b_0{\mathrm{\&tau;}}_x}{G}=C_0-\frac{{\mathrm{\&epsiv;}}_0\&CenterDot;{\mathrm{\&epsiv;}}_r{F}_x}{{\mathrm{Ga}}_0}---\left(11\right)$

(11) formula is the input-output characteristics under shearing stress, C _τwith τ _xlinear.

And its sensitivity

$S_{\mathrm{\&tau;}x}=\frac{{\mathrm{dC}}_{\mathrm{\&tau;}x}}{{\mathrm{dF}}_x}=\frac{{\mathrm{\&epsiv;}}_0\&CenterDot;{\mathrm{\&epsiv;}}_r}{{\mathrm{Ga}}_0}---\left(12\right)$

The similar analysis in formula (9)-(12) is suitable for and τ equally _ywith C _{τ y}characteristic and technical specification, the only long limit b of strip capacitor cell in formula ₀oX direction of principal axis should be arranged at, and its minor face a ₀then in OY direction.

2, contact parallel plate capacitor design

(1) planar design of parallel plate capacitor

The original index normal direction Max.contact stress σ of setting _nmaxfor 200Kpa, if the stressed A of normal direction is square 10 × 10mm ², then maximum normal force F _zmaxfor σ _nmaxa=20N.Tangential Max.contact stress τ _maxfor 70Kp, the distribution of force face of tangential stress is 10 × 10mm ², then maximum tangential force component F _xmax=F _ymax=τ _maxa=7N.

Strip capacitor cell constructive variations shown in Fig. 4 and Fig. 5, only illustrates that electric capacity exports and tangential stress ± τ _xthe relation of input, capacitance increase is all negative, and therefore this initial capacitance structure is not suitable for as right ± τ _xobtain the response increasing and decreasing electric capacity.The present invention adjusts the initiating structure of bottom crown on strip capacitor cell for this reason, and width is a ₀and ka ₀strip capacitor cell form a pair capacitor cell to (C _lwith C _r), specifically as shown in Figure 6.

In Fig. 6, capacitor cell C _land C _relectrode size b ₀, d ₀all identical, width one is a ₀, one is ka ₀, wherein k is constant, is preferably greater than the integer of 1.Work as τ _xwhen=0, C _l=C ₀, C _r=kC ₀, on this basis as at F _xδ is produced under excitation _xmistake skew, offset effect as shown in fig. 4 or 5 will be formed.

$C_L=\frac{{\mathrm{\&epsiv;}}_0\&CenterDot;{\mathrm{\&epsiv;}}_r\&CenterDot;b_0\&CenterDot;(a_0-{\mathrm{\&delta;}}_x)}{d_0}=C_0-\frac{{\mathrm{\&epsiv;}}_0\&CenterDot;{\mathrm{\&epsiv;}}_r\&CenterDot;b_0{\mathrm{\&tau;}}_x}{G}=C_0-\frac{{\mathrm{\&epsiv;}}_0\&CenterDot;{\mathrm{\&epsiv;}}_r{F}_x}{{\mathrm{Ga}}_0}---\left(13\right)$

$C_R=\frac{{\mathrm{\&epsiv;}}_0\&CenterDot;{\mathrm{\&epsiv;}}_r\&CenterDot;b_0\&CenterDot;({\mathrm{Ka}}_0-{\mathrm{\&delta;}}_x)}{d_0}\mathrm{=k}{C}_0-\frac{{\mathrm{\&epsiv;}}_0\&CenterDot;{\mathrm{\&epsiv;}}_r\&CenterDot;b_0{\mathrm{\&tau;}}_x}{G}={\mathrm{kC}}_0-\frac{{\mathrm{\&epsiv;}}_0\&CenterDot;{\mathrm{\&epsiv;}}_r{F}_x}{{\mathrm{Ga}}_0}---\left(14\right)$

C _land C _rcapacitor cell is at same τ _xδ will be produced _xwith Δ C _τresponse.

Thus, formula (11) can be revised as

$C_{\mathrm{\&tau;}x}=C_{\mathrm{\&tau;}0}-\frac{{\mathrm{\&epsiv;}}_0\&CenterDot;{\mathrm{\&epsiv;}}_r}{{\mathrm{Ga}}_0}{F}_x$

In formula, for initial capacitance when shearing stress is zero, above formula is shearing stress input-output characteristic, C _{τ x}with F _xlinear relationship, and its sensitivity

Electrode plane see Fig. 7 is arranged, at a 10 × 10mm ²substrate center do cross separate, form four quadrants, upper right first quartile I, upper left second quadrant II, lower-left third quadrant III, bottom right fourth quadrant IV, wherein I, III quadrant is to τ _xmake the capacitor cell combination of response, and II, IV quadrant is to τ _ymake the capacitor cell combination of response.Object-line is 10 × 10mm ²pcb board four edge lines, hachure part represents the outer mode cross section of wax-loss casting process.Using the position of induction electrode in lower floor's PCB substrate as reference, then the layout of drive electrode in the PCB substrate of upper strata should with PCB substrate edge line for benchmark.In figure, four dashed rectangle are the benchmark of induction electrode on bottom crown, put they and geometry datum line differential apart from being δ ₀(0.1mm).

Capacitor cell module adopts comb structure, and capacitor cell module adopts the comb teeth-shaped structure be made up of plural strip capacitor cell, and each strip capacitor cell comprises the drive electrode of top crown and the induction electrode of bottom crown.By formula (12) a ₀less, the sensitivity of tangential stress response is larger, therefore single capacitor cell is strip.If every root strip capacitor cell is wide is a ₀, the groove width between two strip electric capacity is a _δ, then the pitch of every root strip capacitor cell is ka ₀+ a ₀+ 2a _δ.In order to make full use of the plane space of square substrate, M (ka ₀+ a ₀+ 2a _δ) b ₀/ 2 ≈ 1 square substrate surface areas, M is strip electric capacity quantity, then have M (ka ₀+ a ₀+ 2a _δ)=20mm, in formula, groove width a _δunsuitable excessive, otherwise be unfavorable for using the effective plane space on substrate, also unsuitable too small, the constraint of wax-loss casting process is subject to.For making normal direction sensitivity S _nwith tangential sensitivity S _τequal, by formula (7) and (12), make a ₀g=d ₀e, works as d ₀when=0.1mm, k=1.5, thus M can be obtained.

In order to realize τ _xand τ _ybetween tangential response mutually do not have an impact, the drive electrode length two ends reserved difference position δ of strip capacitor cell ₀, therefore b _{0 drives}=b _{0 end}+ 2 δ ₀, wherein at b _{0 drives}two ends length reserved difference potential theory should ensure ${\mathrm{\&delta;}}_0\&GreaterEqual;d_0\&CenterDot;\frac{{\mathrm{\&tau;}}_{\max }}{G},$ Its value of calculation is ${10}^{-5}\&times;\frac{70\&times;{\mathrm{10}}^3}{2\mathrm{.4}\&times;{\mathrm{10}}^6}\mathrm{=2}\mathrm{.9}\&times;{\mathrm{10}}^{\mathrm{-8}}m={10}^{-2}um<<1um,$ Therefore should b be ensured in technique _{0 drives}-b _{0 end}>=0.01mm.Like this when computing method exports response to electric capacity, ensure τ _xand τ _yany impact is not produced on the response of normal direction electric capacity.

In order to realize τ _xand τ _ydo not produce any impact to the response of normal direction electric capacity, width is a ₀and ka ₀strip capacitor cell form a pair capacitor cell to (C _lwith C _r) carry out publicity reckoning elimination impact each other.Ensure τ _xproduce τ at I, III quadrant capacitor cell _xelectric capacity response, then produce τ at II, IV quadrant capacitor cell _yelectric capacity response, to ensure that capacitor cell in four quadrants is at τ _xand τ _ytwo groups of differential capacitors pair can be produced under tangential excitation.C in the figure 7 _{τ xI}=C _rand C _{τ xIII}=C _lfor conversion τ _xdifferential capacitor pair, and C _{τ xII}=C _land C _{τ xIV}=C _rbe then conversion τ _ydifferential capacitor pair.

(2) calculating of normal stress and tangential force

If width is a in Fig. 7 ₀strip capacitor cell be subject to tangential force τ _x, produce a tangential displacement d _xafter output capacitance value be C ₁, width is ka ₀strip capacitor cell be subject to tangential force τ _x, produce a tangential displacement d _xafter output capacitance value be C ₂, then have:

$C_1=\frac{\mathrm{\&epsiv;}(a_0-d_x)b_0}{d_n}=\frac{{\mathrm{\&epsiv;a}}_0{b}_0}{d_n}-\frac{{\mathrm{\&epsiv;b}}_0{d}_x}{d_n}---\left(15\right)$

$C_2=\frac{\mathrm{\&epsiv;}({\mathrm{ka}}_0-d_x)b_0}{d_n}=\frac{{\mathrm{\&epsiv;ka}}_0{b}_0}{d_n}-\frac{{\mathrm{\&epsiv;b}}_0{d}_x}{d_n}---\left(16\right)$

Obtained by (15)-(16):

$C_1-C_2=\frac{{\mathrm{\&epsiv;a}}_0{b}_0}{d_n}-\frac{{\mathrm{\&epsiv;ka}}_0{b}_0}{d_n}$ Calculate:

$d_n=\frac{{\mathrm{\&epsiv;a}}_0{b}_0(1-k)}{C_1-C_2}---\left(17\right)$

Obtained by (15) * k-(16):

${\mathrm{kC}}_1-C_2=\frac{{\mathrm{\&epsiv;d}}_x{b}_0}{d_n}-\frac{{\mathrm{\&epsiv;kd}}_x{b}_0}{d_n}=\frac{{\mathrm{\&epsiv;d}}_x{b}_0(1-k)}{d_n},$ (17) are substituted into above formula, can obtain:

$d_x=\frac{a_0({\mathrm{kC}}_1-C_2)}{C_1-C_2}---\left(18\right)$

According to $d_n=d_0-\mathrm{\&Delta;}d=d_0(1-\frac{F_n}{E\&CenterDot;S_0})$

Known: $F_n=\frac{(d_n-d_0)E\&CenterDot;S_0}{d_0}$

By $\frac{d_x}{d_0}=\mathrm{\&gamma;}=\frac{\mathrm{\&tau;}}{G}=\frac{F_{\mathrm{\&tau;}}}{G\&CenterDot;S_0},$ So $F_{\mathrm{\&tau;}x}=\frac{{\mathrm{GS}}_0{d}_x}{d_0}.$

In above formula, no matter be normal direction excitation F _nor tangentially encourage F _yall not to O _τhave an impact.Namely automatically σ is eliminated _nand τ _yto τ _xthe coupling of total output or interference because every in signal packet containing in the computing of subtracting each other, equivalent and the capacitance variations with symbol are eliminated all automatically.And F _yand F _xto σ _ninterference by upper electrode at b ₀direction increases geometrical length 2 δ ₀eliminate.In like manner F can be obtained _{τ y}.

(4) main material selection and characterisitic parameter thereof

The section of structure of comb teeth-shaped plane-parallel capacitor is similar to the sandwich structure shown in Fig. 9.In Fig. 9,1 is upper PCB substrate, and 2 is lower PCB substrate, and 3 is drive electrode, and 4 is induction electrode, and 5 is elastic fluid.Pole plate is apart from d ₀=0.1mm, upper and lower base plate inner space, except copper foil electrode, is PDMS (polydimethylsiloxane) the superlastic dielectric with lost wax process filling.Its machinery and physical characteristic parameter are Young's modulus E=6.2MPa, and its shear modulus is G=4.1MPa, relative DIELECTRIC CONSTANT ε during dielectric polorization _y=2.5.Because E and G of medium is much smaller than the elastic modulus E of copper _copper=103GPa.Therefore the distortion of capacitor internal medium under stress state is much larger than the distortion of pole plate.

(5) contact conductor design

Be that drive electrode or induction electrode all need to have lead-out wire, consider that each drive electrode is all ground connection in signal level, therefore four groups of drive electrodes only need share same lead-out wire.The induction electrode of four the first strip capacitor cell groups and the second strip capacitor cell group then needs with respective independently lead-out wire, and draw from the side of planar package so whole capacitance component has at least 5 pins, four induction electrodes refer to that X-direction width is a ₀induction electrode and width be ka ₀induction electrode, and Y-direction width is a ₀induction electrode and width be ka ₀induction electrode so that whole assembly top and bottom outer surface can contact with measuring object easily.The present invention, under the support of new material and new technology, completes the design of a kind of novel three-dimensional power sensitization capacitance combination, at 10 × 10mm ²stress surface on, be no matter normal direction or tangential, all can transmit stress more uniformly to medium.In literary composition, four cell capacitance are two to combination distribution.In the contact of non-coplanar force and sensor surface, external force only has 1, and electric capacity response but has 4, and whole battery lead plate, all to asking Fn to contribute, simultaneously by two pairs of capacitor combinations composition systems, can obtain F again _xand F _yinformation, thus complete description three-dimensional force.These 4 cell capacitance combinations should complete its basic function, do not interfere with each other again, and this is just achieved by design concept cleverly.

Export data and carry out data conversion to control unit because each capacitor cell is provided with lead-out wire and solve, accurately can calculate the vector size of three-dimensional force, make normal direction and tangential conversion all reach higher linear, substantially increase certainty of measurement.During use, sensor is fitted in Adam's apple place, wearer is once pronunciation, force acting on transducer when Adam's apple undulatory motion, detection computations goes out the three-dimensional force phasor coordinate that each syllable forms with the vector 3-D migration distance vector of its corresponding three-dimensional force, namely use the three-dimensional force each pronunciation of phasor coordinate labelling thus distinguish each pronunciation fast, and saving the data in the data base of controller.

In addition, induction part is placed in Adam's apple position, removably can be connected on the medicated clothing at neck place by elasticity garter spring or hook card device, due to three-dimensional pressure sensor can make very little, can narrow down to 10*10mm ²base plate on, so the actual volume of induction part can be very little, be placed on the inner side of elasticity garter spring, being placed in subsides on medicated clothing with elasticity garter spring touches in Adam's apple position, accurately simple supervision Adam's apple motion, it lays schematic diagram as shown in Figure 10 a, and in figure, 6 represent induction part.Simultaneously due to the ultra-thin performance of sensor, pole plate selects flexible material can make electronic skin shape, and induction part can be entrenched in adhered layer, directly subsides and at Adam's apple place.Tatoo in prior art to paste and can be pasted onto on skin one week and there is water-proof function, so the manufacturing technology of adhered layer has had certain basis, stay a gap to facilitate unloading at adhered layer side.Can be improved to further, induction part attached to go out at Adam's apple by tatooing in being directly pasted onto and tatooing and paste, and because sensor have employed flexible material, so do not affect working sensor during slight distortion, its schematic diagram as shown in fig. lob.

Handheld Division comprises controller, data base, exercise unit, voice unit and reception of wireless signals unit, data base, exercise unit, the voice unit playing voice and reception of wireless signals unit are all connected to controller, received the Adam's apple vibration information of induction part by reception of wireless signals unit, sounded by voice unit after controller analysis.

In order to ensure the accuracy pronounced, the present invention is provided with data base and carries out voice confirmation and deposit report source of sound, and data base comprises sound bank, confirms storehouse and Wai Yinku.Sound bank is storehouse, pronunciation source, and the inside stores a large amount of speech basic information and Word message, and the pronunciation of voice unit derives from sound bank.What confirm to deposit in storehouse is the voice that confirmed in training study process of wearer and Adam's apple pronunciation information, namely by practising the three-dimensional force phasor coordinate of each sound confirmed and corresponding voice thereof.Ambient noise is stored as the dyskinetic sound such as sound of the wind, the patter of rain or collar grating and the three-dimensional force phasor coordinate that mates with it in outer sound storehouse, when detecting this type of sound, controller directly can tell this type of dyskinetic sound, and voice unit also can not sounding, decreases the phenomenon of wrong sounding.And in the use in later stage, wearer can also upgrade change sound bank always, the input in conjunction with exercise unit is arranged, and improves voice coordinate information, reaches and more use effect more easily.

Exercise unit in controller is that conveniently wearer uses transmitter more accurately, exercise unit is in fact also a covert man-machine interaction unit, exercise unit mainly in order to wearer initially uses transmitter, be absorbed in exercise thus eliminate a large amount of running-in period in later stage.Exercise unit is in conjunction with the button on Handheld Division, when entering Practice on Phonetics, wearer contrasts font and sends phonetic symbol, often sends a sound, and controller can record the three-dimensional force phasor coordinate of this phonetic symbol, practising can also be different according to volume, repeatedly send same sound, thus the coordinate series of same sound recorded by controller, improves the accuracy of pronunciation, the phonetic symbol determined and coordinate leave in and confirm that in storehouse, deposit data is clear by utilizing controller to call.Being also noted that dyskinetic sound and coordinate thereof to record during Practice on Phonetics leaves in Wai Yinku, and other voice temporarily do not used still are placed in sound bank, and sound bank is complete speech utterance data base composition.After Database success, can be copied out by instrument and be placed in other intelligent handheld devices.Particularly point out, the handheld device that exercise unit is combined with input key uses exercise to get up convenient, after having practised, is gone out by database copy to other simple and direct smart machines as in intelligent watch, easy to use.

A using method for laryngophone device, method step comprises:

Step one, induction part paste to touch and place in Adam's apple, the first Handheld Division using selection to have operation input function.Handheld Division with input function facilitates first user to practise, in conjunction with enter key, and functions such as having confirmation, cancel, repeat.

Step 2, wearer's pronunciation, the sensor in induction part detects stressed size vector signal and is transmitted into controller.Font in wearer's contrasting data storehouse sends phonetic symbol, often send a sound, condenser type three-dimensional force sensor can record the three-dimensional force of this phonetic symbol, controller receives data and calculates phonetic symbol phasor coordinate, and practitioner can also be different according to volume, repeatedly send same sound, thus the coordinate series of same sound recorded by controller, improve the accuracy of pronunciation, the phonetic symbol determined and coordinate leave in and confirm that in storehouse, the clear controller that is conducive to of deposit data calls.

Step 3, controller receive the signal of induction part, the voice coordinate that displacement vector composition wearer signal processing being calculated stressed vector sensor pronounces.Wearer practises in the process of pronouncing, and controller forms voice coordinate system according to the voice signal gathered and the relevant force vector that is subject to thereof, and sets up a speech database.

Step 4, repetition step 2 and three, after wearer is complete according to sound bank pronunciation exercises, under sensor record, syllable and coordinate thereof conveniently call stored in coordinate storehouse.After Database success, can be copied out by instrument and be placed in other intelligent handheld devices, can have multiple Handheld Division like this, the use of Handheld Division arbitrarily can regulate according to the needs of wearer.

Step 5, practised after, in routine use, wearer pronounce Adam's apple motion time, induction part records by force vector, the preliminary Speech Object of controller, called data library information contrast draw final voice messaging, send voice messaging simultaneously, complete pronunciation work.

Above by reference to the accompanying drawings to invention has been exemplary description; obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that method of the present invention is conceived and technical scheme is carried out; or design of the present invention and technical scheme directly applied to other occasion, all within protection scope of the present invention without to improve.The protection domain that protection scope of the present invention should limit with claims is as the criterion.

Claims (10)

1., based on the laryngophone device that three-dimensional pressure detects, it is characterized in that, described device comprises:

Induction part, induction part pastes to touch and arranges in Adam's apple, inside be provided with the motion of three-dimensional pressure sensor record Adam's apple be applied to the power of sensor and send stressed signal and go out, three-dimensional pressure sensor comprises control unit, the X-direction capacitor cell group be connected respectively with control unit and Y-direction capacitor cell group, described X-direction capacitor cell group and Y-direction capacitor cell group include capacitor cell module, described capacitor cell module adopts the comb teeth-shaped structure be made up of plural strip capacitor cell, each strip capacitor cell comprises the drive electrode of top crown and the induction electrode of bottom crown,

Handheld Division, wireless connections induction part, is provided with controller and voice unit in Handheld Division, voice unit connection control device is sounded according to the detection signal of induction part, for induction part provides wireless charging.

2. the laryngophone device detected based on three-dimensional pressure according to claim 1, it is characterized in that, described induction part comprises the sensor unit detecting Adam's apple motion force vector signal and the wireless signal transmission unit transmitted, wireless signal transmission unit connecting sensor unit, three-dimensional pressure sensor is that the sensor of survey calculation three-dimensional force is positioned at sensor unit.

3. the laryngophone device detected based on three-dimensional pressure according to claim 1, it is characterized in that, described capacitor cell module comprises by two or more width a ₀length b ₀strip capacitor cell composition the first strip capacitor cell group and two or more width ka ₀length b ₀strip capacitor cell composition the second strip capacitor cell group.

4. the laryngophone device detected based on three-dimensional pressure according to claim 1, it is characterized in that, the drive electrode of described each strip capacitor cell is identical with induction electrode width, and the length of drive electrode is greater than induction electrode length, and drive electrode length two ends are reserved left poor position δ respectively _leftwith right poor position δ _right, b _{0 drives}=b _{0 sense}+ δ _right+ δ _left, wherein, b _{0 drives}for the drive electrode length of strip capacitor cell, b _{0 sense}for the induction electrode length of strip capacitor cell, described poor position δ _left=δ _right, and wherein d ₀for strip capacitor cell dielectric thickness, G is the modulus of rigidity of elastic fluid, τ _maxfor maximum stress value.

5. the laryngophone device detected based on three-dimensional pressure according to claim 1, it is characterized in that, the lead-in wire that described comb teeth-shaped structure comprises more than 20 strip capacitor cells, connects one to one with strip capacitor cell, is provided with electrode spacing a between adjacent two strip capacitor cells _δ, described parallel-plate area S=M (a ₀+ 2a _δ+ ka ₀) b ₀/ 2, wherein, M is strip capacitor cell quantity, b ₀for the length of strip capacitor cell, a ₀the width of strip capacitor cell.

6. the laryngophone device detected based on three-dimensional pressure according to claim 3, it is characterized in that, the strip capacitor cell lead-in wire of described first strip capacitor cell group and the second strip capacitor cell group is by parallel way or be independently connected to control unit.

7. the laryngophone device detected based on three-dimensional pressure according to claim 1, it is characterized in that, described Handheld Division also comprises the data base that deposits speech source data and the exercise unit for practising wearer's pronunciation, data base and practise unit and be connected on the controller.

8. the laryngophone device detected based on three-dimensional pressure according to claim 1, it is characterized in that, described Handheld Division and induction part install identical communications protocol, and Handheld Division has multiplely all has installed identical communications protocol and can be connected with induction part radio communication.

9., based on a using method for the laryngophone device of three-dimensional pressure detection, it is characterized in that, described method step comprises:

Step one, induction part paste to touch and place in Adam's apple, the first Handheld Division using selection to have operation input function;

Step 2, wearer's pronunciation, the sensor in induction part detects stressed size vector signal and is transmitted into controller;

Step 3, controller receive the signal of induction part, process the signal into the voice coordinate that pronounces of displacement vector composition wearer that process calculates stressed vector sensor;

Step 4, repetition step 2 and three, after wearer is complete according to sound bank pronunciation exercises, under sensor record, syllable and coordinate thereof conveniently call stored in coordinate storehouse;

Step 5, practised after, in routine use, wearer pronounce Adam's apple motion time, induction part records by force vector, the preliminary Speech Object of controller, called data library information contrast draw final voice messaging, send voice messaging simultaneously.

10. the using method of the laryngophone device based on three-dimensional pressure detection according to claim 9, it is characterized in that, described Handheld Division has multiple, after installing the communications protocol identical with induction part, database copy is entered, is all connected transmission of signal with induction part.