CN204813097U - Intelligence pillow - Google Patents

Abstract

The utility model relates to an intelligence pillow belongs to bedding technical field, and the pillow includes the pillow and the controller of shoulder pad, wave appearance, and the pillow includes that the neck is regional with the head, and the connection can be dismantled in the regional end of neck of pillow to the shoulder pad, and the neck of pillow is regional highly is higher than the regional height of head, and the regional inside of neck is equipped with cavity and the portion of increasing, and the controller is installed in one side of pillow, increases portion's arrangement connection director in the cavity. The utility model discloses in improve wave nature pillow commonly used, has set up the controller and has carried out automatically regulated to the portion of increasing, in addition, the face's gesture the when controller is slept to the user is discerned and is estimated, estimates the gesture of a face and the position of neck, the portion of in time will increasing removes the neck below, has solved pillow height and has fixed problem single, that can not change according to user's the appearance of sleeping.

Description

A kind of intelligent pillow

Technical field

The utility model relates to bedding technical field, especially a kind of according to the lying on the back of user, the self-adjusting intelligent pillow of state of lying on one's side.

Background technology

Pillow is as a kind of articles for daily use; it is generally acknowledged; pillow is exactly people is the comfortable of sleep and the filler that adopts; and be familiar with from modern medicine study, the backbone of human body, be straight line viewed from front; but side sees it is the curve with four physiological bendings; in order to protect the normal physiological bending of neck, maintaining normal physiological activity when people sleep, when people sleep, must pillow be adopted.Pillow is generally made up of pillow and pillowcase two parts.Pillow can be divided into high pillow and low pillow, but high pillow is one of common cause causing stiff neck, cervical spondylopathy.In addition, high pillow can increase neck and chest angle, tracheae is ventilated and is obstructed, easily cause dry throat, pharyngalgia and nose snore.High pillow can also make thoracic dorsal muscle nervous for a long time, chest pressurized, hinders eupnea, must bring harmful effect if things go on like this to health.Normal person sleeps low pillow for a long time, equally also can change cervical vertebrae physiological state.Because the vein of head is without valve, it is slack-off that gravity can make brain internal jugular vein reflux, and artery blood supply increases relatively, thus occurs the discomforts such as head rises, agitation, insomnia, and low pillow especially has harmful effect for hypertension and Atheromatosis people.The height of general health pillow will according to the height of human body, and body weight judges.But sometimes get used to a kind of sleeping position and want again to change pillow again when changing a kind of sleeping position, change cumbersome, and increase an extra spending again.So, need a kind of pillow, along with the change of sleeping position, the height of pillow can be changed.

Summary of the invention

In order to the pillow height fixed single overcoming prior art, the deficiency that can not change according to the sleeping position of user, the utility model provides a kind of intelligent pillow.

A kind of intelligent pillow, described pillow comprises shoulder pad, the pillow of undulating profile and controller, pillow comprises neck area and head zone, shoulder pad is detachably connected on the termination of the neck area of pillow, the height of the neck area of pillow is higher than the height of head zone, the inside of neck area is provided with cavity and increases portion, and controller is arranged on the side of pillow, and the portion of increasing is placed in connection control device in cavity.Described pillow also comprises head rod, the second connecting rod and the 3rd connecting rod, controller connects head rod, head rod is flexibly connected the second connecting rod, second connecting rod is flexibly connected the 3rd connecting rod, portion is increased in 3rd connecting rod connection, and controller controls the position in portion of increasing by connecting rod.Described pillow also comprises the camera gathering sleeper's facial pose and the pressure sensor detecting pressure size on pillow, camera is arranged on above pillow, pressure sensor is placed in pillow and is connected internally to controller, the Data Control camera work that controller detects according to pressure sensor.Described pressure sensor is condenser type three-dimensional force sensor, sensor comprises control unit, the X-direction differential capacitor unit combination be connected respectively with control unit and Y-direction differential capacitor unit combination, described X-direction differential capacitor unit combination is passed through the tangential force of capacitance subtraction calculations X-direction and is eliminated the impact of Y-direction tangential force, described Y-direction differential capacitor unit combination is passed through the tangential force of capacitance subtraction calculations Y-direction and is eliminated the impact of X-direction tangential force, the normal force of the electric capacity read group total capacitance sensor of described X-direction differential capacitor unit combination and Y-direction differential capacitor unit combination and eliminate tangential force impact, control unit connects the controller of pillow.Described X-direction differential capacitor unit combination and Y-direction differential capacitor unit combination include two or more and mutually form differential capacitor cell module, described capacitor cell module adopts the comb teeth-shaped structure be made up of plural strip electric capacity, and each strip electric capacity comprises the drive electrode of top crown and the induction electrode of bottom crown.The drive electrode of described each strip electric capacity 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 drive electrode width 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 _ymaxfor maximum stress value.Described two groups of drive electrodes mutually forming the strip electric capacity of differential capacitor cell module and induction electrode are provided with the skew that initially misplaces in the width direction, and dislocation bias size is identical, direction is contrary.Described pillow also comprises head rod, the second connecting rod and the 3rd connecting rod, controller connects head rod, head rod is flexibly connected the second connecting rod, second connecting rod is flexibly connected the 3rd connecting rod, portion is increased in 3rd connecting rod connection, and controller controls the position in portion of increasing by connecting rod.Described pillow surface is provided with multiple ear region, and ear region depression arranges pillow surface, is formed with a circle alar part around ear region.Be provided with soup stick in the head zone of described pillow, soup stick top is fixed with suction member, and suction member is fitted in the formation ear region, below of ear in head zone.

A kind of using method of intelligent pillow, described method step comprises: step one, learning phase: user lies flat on the bed, head is placed in the head zone of pillow, overturn subsequently, each attitude keeps one to two minute, when attitude keeps, press the pause button that controller is arranged, simultaneously camera collection facial image information; The view data utilizing learning phase to obtain in step 2, controller carries out fitting of a polynomial process, from image, extract characteristic vector, forms face feature database; The pressure size that step 3, pressure sensor monitoring pillow are subject to, controller detects the large micromutation of pressure, camera collection pillow state and face image, feature extraction is carried out to face data, be input in face feature database and carry out attitude matching, estimate facial pose, determine the position of neck, controller sends and increases portion's movement instruction; Step 4, evaluation phase: if facial pose estimates at error, the portion stop position of increasing is not right, and user manually adjusts, and presses pause button, carries out IMAQ, enriches face data storehouse.In described step 3, what the positioning unit arranged by controller completed determined in the position of neck, and positioning unit take pressure sensor as coordinate, is provided with multiple pressure sensor in pillow, is evenly placed in pillow.In described using method, controller is analyzed after facial image information, determines whether ear is forced into while determining neck location, if ear is forced into, ear below pillow inside form ear region.

The utility model has following good effect: be improve conventional choppiness pillow in the utility model, cavity is provided with in neck area, settle portion of increasing to the free adjustment of pillow in cavity, also be provided with controller in the utility model to automatically adjust to the portion of increasing, in addition, facial pose when controller is slept to user is carried out identification and is estimated, estimate the attitude of face and the position of neck, timely the portion of increasing is moved to below neck, and increase the height in portion according to the neck height adjustment of user, with the comfort with the use of person.Also be provided with ear region in the utility model and buffer protection is carried out to the ear that user is pressed onto.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of the pillow in the utility model.

Fig. 2 is the generalized section of the pillow in the utility model.

Fig. 3 is the fundamental diagram that the controller of pillow in the utility model controls portion of increasing.

Fig. 4 is strip electric capacity and the coordinate system thereof of detailed description of the invention of the present utility model.

Fig. 5 is the strip electric capacity schematic diagram of detailed description of the invention of the present utility model.

Fig. 6 is the strip electric capacity dextrad skew schematic diagram of detailed description of the invention of the present utility model.

Fig. 7 is the strip electric capacity left-hand skew schematic diagram of detailed description of the invention of the present utility model.

Fig. 8 is the right initial dislocation figure of the strip electric capacity of detailed description of the invention of the present utility model.

Fig. 9 is that the strip electric capacity of detailed description of the invention of the present utility model is to stressed rear deflection graph.

Figure 10 is the parallel-plate three-dimensional force pressure sensor structure figure of detailed description of the invention of the present utility model.

Figure 11 is the parallel-plate three-dimensional force pressure sensor drive electrode structure chart of detailed description of the invention of the present utility model.

Figure 12 is the parallel-plate three-dimensional force pressure sensor induction electrode structure chart of detailed description of the invention of the present utility model.

Figure 13 is that being exported by identical carry-over factor K1 realization of detailed description of the invention of the present utility model responds summation.

Figure 14 is the differential schematic diagram of signal that the cell capacitance of detailed description of the invention of the present utility model is right.

Figure 15 is the plane-parallel capacitor cross-section structure of detailed description of the invention of the present utility model.

Figure 16 is the using method flow chart of the pillow in the utility model.

Figure 17 is the schematic diagram that pillow in the utility model is provided with ear region embodiment one.

Figure 18 is the schematic diagram of the ear region embodiment one in the utility model.

Figure 19 is the section operating diagram of the ear region embodiment two in the utility model.

In figure, 1 is shoulder pad, and 2 is pillow, 3 is neck area, and 4 is head zone, and 5 is cavity, 6 is the portion of increasing, and 7 is controller, and 8 is head rod, 9 is the second connecting rod, and 10 is the 3rd connecting rod, and 11 is ear region, 12 is pause button, and 13 is upper PCB substrate, and 14 is lower PCB substrate, 15 is drive electrode Copper Foil, and 16 is induction electrode Copper Foil.

Detailed description of the invention

A kind of intelligent pillow, as shown in Figure 1, the pillow that the utility model provides can detect user's facial pose in bed to its structural representation, provides comfortable sleep articles for use according to the height of facial pose adjustment pillow thus for user.Pillow is generally made up of pillowcase and pillow 2, and herein mainly to the improvement of pillow 2, in order to introduce conveniently, in literary composition, pillow is pillow 2, and pillow 2 comprises neck area 3 and head zone 4, and the height of neck area 3 is higher than the height of head zone 4.The pillow that the utility model provides is extended type pillow, be provided with shoulder pad 1, winter is because head is outside quilt, be easy to shoulder from catching cold and cause stiff neck, sometimes because shoulder has slight chill in the air, thus cover-head is slept, but head is placed on impact in quilt to be breathed, the air breathed is the gas do not circulated in quilt, is unfavorable for respiratory health.So set up shoulder pad 1 position in the utility model in pillow, shoulder pad 1 is movably connected in the neck area 3 times of pillow 2, slide fastener or hidden discount can be selected, tie point is arranged on neck area 3 times, the foreign matter avoided when user uses presses against sense, can take off during heat, install and use when it is cold.In addition two corners of shoulder pad 1 are provided with two little magnet, and in bed, unconscious the stirring of sleeper will cause shoulder pad 1 to drop, shoulder pad 1 go out installation two magnet in use adhesive be trapped among neck place together, thus better solve the problem of catching a cold of shoulder.

As shown in Figure 1, the general shape of pillow is wavy profile, and comprise the head zone 4 of the neck area 3 being suitable for neck raised up and the placement head be connected to after neck area 3, neck area 3 is applicable to the neck state under supine position.But according to different conditions such as sex, age, heights, suitable pillow height required for everyone is different, so the neck area 3 in the utility model is hollow-core constructions, as shown in Fig. 2 profile, neck area 3 inside is provided with a cavity 5, has settled one to increase portion 6 in cavity 5, increase portion 6 to move in cavity 5, pillow also includes controller 7 and inflator pump, and portion 6 is increased in inflator pump connection, and controller 7 controls the height increasing portion 6.As shown in Figure 3, controller 7 is by head rod 8, three connecting rods such as second connecting rod 9 and the 3rd connecting rod 10 grade are connected the portion of increasing 6, controller 7 connects head rod 8, head rod 8 connects the second connecting rod 9 by the first connector, second connecting rod 9 connects the 3rd connecting rod 10 by the second connector, proper motion and the engaging of connector control connection bar stop, controller 7 is arranged on the side of pillow, head rod 8 stretches in cavity 5, second connecting rod 9 drive is increased portion 6 and is moved left and right, 3rd connecting rod 10 drives portion of increasing 6 to move forward and backward according to controller 7 instruction, mutual motion between three connecting rods coordinates thus under ensure that the portion of increasing 6 can move to the neck of user timely, when user lies on one's side or user arbitrarily movement time, pillow increases in time thus ensures the comfortableness of user.

Head rod 8 and the 3rd connecting rod 10 are flexible snap-in structures, can telescopic length, change the length of connecting rod, the side of the second connecting rod 9 is hollow structures, second connecting rod 9 is by the fixing lower side-to-side movement of the first connector at head rod 8, namely head rod is in the second connecting rod, second connecting rod is movable about relying on the first connector, second connector is provided with projection and can be fixed in the second connecting rod 9 termination, stop at the location of instruction place of controller 7, because the 3rd connecting rod 10 is also stretching structure, the elastic drive of the 3rd connecting rod self is increased portion 6 and is moved forward and backward.In addition, because sex is different, age is different, height is different, the pillow height causing everyone to need also is different, so only have the gas of trace in portion of increasing 6 in the utility model, when the portion of increasing 6 moves under neck, the surface of increasing portion 6 is provided with a neck pressure sensor, optimum state is only when controller 7 monitors when neck pressure sensor meets the pressure data of human body, when not meeting optimum state data, increase portion 6 start inflate until neck pressure sensor monitoring to data fit system in optimum data, when controller 7 monitor user lie on the back need venting time, increase portion 6 to exit, ensure the best using state of user.

In order to ensure the timely movement in the portion of increasing 6, just needing to detect the head state of user, is determine by carrying out head state to the gesture recognition of face in the utility model.Also be provided with camera in the controller 7 of pillow and carry out face image collection, camera is arranged on roof, top or the corner place of pillow point, gathers the visual field large, clear picture, can not cause gathering image failure due to the random movement of user.Camera connection control device 7, controller 7 carries out facial pose judgement by analyzing the image collected, thus infers and head state, issues instructions to connector and moves the portion of increasing 6.In the utility model, camera does not need the moment to take pictures to monitor user, several pressure sensor has evenly been settled in pillow, preferable case is, five sensor placement are at the corner of pillow and center, the pressure size that is subject to of moment monitoring pillow, when controller 7 detects the large micromutation of pressure, camera collection image information, carry out data analysis, increase under portion 6 moves to the neck of user in time.At least five sensors are adopted to be ensure that pressure sensor can monitor the movement of head in pillow region during user's head random mobile in the utility model.

In order to increase pressure detecting accuracy, the problem that the detected pressure value degree of accuracy that influencing each other between tangential force and normal force causes in pressure detecting process is not high, and user is when using pillow state, the state of pillow is uncertain, be subject to the extruding of head, pillow is not only subject to independent normal pressure, also has skew force, pillow is subject to the effect of all directions power of three-dimensional in general, in order to improve the accuracy that pressure sensor detects, better realize the self-adjusting data basis of intelligent pillow, so improve pressure sensor in the utility model.

The pressure sensor adopted in the utility model is condenser type three-dimensional force sensor, described sensor comprises control unit, the X-direction differential capacitor unit combination be connected respectively with control unit and Y-direction differential capacitor unit combination, described X-direction differential capacitor unit combination is passed through the tangential force of capacitance subtraction calculations X-direction and is eliminated the impact of Y-direction tangential force, described Y-direction differential capacitor unit combination is passed through the tangential force of capacitance subtraction calculations Y-direction and is eliminated the impact of X-direction tangential force, the normal force of the capacitance read group total capacitance sensor of described X-direction differential capacitor unit combination and Y-direction differential capacitor unit combination and eliminate tangential force impact.Described X-direction differential capacitor unit combination and Y-direction differential capacitor unit combination include two or more and mutually form differential 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.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 elastic fluid thickness, G is the modulus of rigidity of elastic fluid, τ _maxfor maximum stress value.Described two groups of drive electrodes mutually forming the strip capacitor cell of differential capacitor cell module and induction electrode are provided with the skew that initially misplaces in the width direction, and dislocation bias size is identical, direction is contrary.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+ a _δ) b ₀, wherein, bar M is strip capacitor cell quantity, b ₀for the length of strip capacitor cell, a ₀the width of strip capacitor cell.The lead-in wire of each strip capacitor cell of described capacitor cell module 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.Be provided with intermediate translator between described control unit and capacitor cell module, 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. 4, pole plate plane length b ₀, width a ₀, elastic fluid 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, the action direction of Fx and Fy along X-axis and Y-axis, the action direction of Fz along OZ axle, namely direction, normal direction and tangential stress are a kind of stress tensor, from can the response of output capacitance 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=Fx/A.

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

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

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

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

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 strip capacitor cell, and its sign is pointed to by reference axis 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 plane-parallel capacitor, 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 5 _xwhen being zero, a _{on 0}=a _{0 time}just right, effective cross-section A between substrate _τ=a ₀b ₀; In figure 6, 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. 7, work as τ _xduring for left-hand, dislocation skew δ _xthen left, A _τ=(a ₀-δ _x) b ₀, the reduction of effective area is identical, and consequent electric capacity is:

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

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 input---the 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 indicator, 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.

(5) introduction of differential capacitor unit

Capacitor arrangement change shown in Fig. 6 and Fig. 7, 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 utility model adjusts the initial configuration of bottom crown on capacitor for this reason, forms pair of differential electric capacity to (C _lwith C _r), specifically as shown in Figure 8.

In Fig. 8, a pair electric capacity C _land C _relectrode size a ₀, b ₀, d ₀all identical, initial dislocation skew δ ₀also identical, difference is left side capacitor C _lupper strata δ ₀wedge angle be oriented to+OX, and the right capacitor C _rupper strata δ ₀wedge angle sensing-OX.

Work as τ _xwhen=0, $C_L=C_R=C_{{\mathrm{\&tau;}}_0}=C_0-\frac{{\mathrm{\&epsiv;}}_0\&CenterDot;{\mathrm{\&epsiv;}}_r\&CenterDot;\left({\mathrm{\&delta;}}_0\right)\&CenterDot;b_0}{d_0},$ Namely the electric capacity in figure corresponding to dash area, on this basis as at-F _xlower generation ± the δ of excitation _xmistake skew, formed as shown in Figure 9 electric capacity increase and decrease effect.

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

C in Fig. 9 _land C _rdifferential capacitor is to same τ _xby generation ± δ _xwith ± Δ C _τresponse. $\&PlusMinus;{\mathrm{\&delta;}}_x=\&PlusMinus;d_0\frac{{\mathrm{\&tau;}}_x}{E};$

δ ₀size should meet desirable δ ₀=10 μm, thus, formula (11) can be revised as

$C_{\mathrm{\&tau;}x}=C_{\mathrm{\&tau;}0}\&PlusMinus;\frac{{\mathrm{\&epsiv;}}_0\&CenterDot;{\mathrm{\&epsiv;}}_r}{{\mathrm{Ga}}_0}{F}_x---\left(14\right)$

In formula, for initial capacitance when shearing stress is zero, (14) formula is shearing stress input-output characteristic, C _{τ x}with F _xlinear relationship, and its sensitivity

2, contact parallel plate capacitor design

(1) planar design of parallel plate capacitor

Arrange, at a 10 × 10mm see the electrode plane in Figure 10, Figure 11 and Figure 12 ²substrate center do cross separate, form four quadrants I, II, III, IV, wherein I, II quadrant is to τ _xmake the differential capacitor unit combination of response, and III, IV quadrant is to τ _ymake the differential capacitor unit combination of response.Object-line is 10 × 10mm ²pcb board four edge lines, answer precise cutting accurate with what ensure in shape and size to PCB substrate.Hachure part represents the outer mode cross section of wax-loss casting process, and its geometry and size also should keep precisely when mechanical-moulded, tears open, more should maintain dimensional accuracy for being convenient in demoulding and can spelling, finally to ensure the mutual interference that elimination three-dimensional force responds electric capacity.

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 electric capacity is strip.If every root strip capacitor cell is wide is a ₀, the groove width between two strip capacitor cells is a _δ, then the pitch of every root strip capacitor cell is a ₀+ a _δ.In order to make full use of the plane space of square substrate, make M (a ₀+ a _δ) b ₀≈ 1 square substrate surface area, M is the strip capacitor cell number in 4 quadrants, then have M (a ₀+ a _δ)=2*10mm, 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 _τidentical, by formula (7) and (12), make a ₀g=d ₀e, works as d ₀during=0.1mm, then a ₀=0.15mm, if make a _δ=0.05mm, then M=100, each quadrant has 25 strip capacitor cells.

In order to realize τ _xand τ _ybetween tangential response mutually do not have an impact, δ is reserved at drive electrode length two ends ₀, therefore b _{0 drives}=b _{0 end}+ 2 δ ₀, wherein at b _{0 drives}two ends length is reserved should be ensured in theory ${\mathrm{\&delta;}}_0\&GreaterEqual;d_0\&CenterDot;\frac{{\mathrm{\&tau;}}_{y\max }}{G},$ Its calculated value is ${10}^{-5}\&times;\frac{70\&times;{10}^3}{2.4\&times;{10}^6}=2.9\&times;{10}^{-8}m={10}^{-2}um<<1um,$ Therefore should b be ensured in technique _{0 drives}-b _{0 end}>=0.01mm.τ can be ensured like this when computing method exports response to electric capacity _xand τ _yany impact is not produced on the response of normal direction electric capacity.

In order to realize τ _xand τ _yany impact is not produced on the response of normal direction electric capacity, drive electrode and the horizontal layout of induction electrode in all quadrants of each strip capacitor cell should ensure that certain dislocation offsets, eliminated the effects of the act by differential, get 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.And put they and geometry datum line differential apart from being δ ₀(0.1mm), to ensure τ _xproduce differential capacitor at I, II quadrant capacitor cell and export response, then produce τ at III, IV quadrant capacitor cell _ydifferential capacitor response, an initially dislocation skew δ is set _xo, its value should be protected its calculated value and δ ₀similar, its skew that initially misplaces all arranges δ _xo=δ _yo=0.01mm, 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 fig .9 _{τ xI}=C _rand C _{τ xII}=C _lfor conversion τ _xdifferential capacitor pair, and C _{τ xIII}=C _land C _{τ xIV}=C _rbe then conversion τ _ydifferential capacitor pair.

(2) normal stress calculates

The normal direction can being rewritten single capacitor by formula (6) responds electric capacity

$C_{ni}=N(C_0+\frac{{\mathrm{\&epsiv;}}_0\&CenterDot;{\mathrm{\&epsiv;}}_r\&CenterDot;Fn}{d_{0}E})---\left(15\right)$

Wherein, i=I, II, III, IV, because of in each quadrant, N is the strip capacitor cell quantity of each quadrant.

As sued for peace again, can obtain

Above formula is σ _nelectric capacity overall response.

Although the summation of single electric capacity is connected in parallel realization by contact conductor.But once and connect, just no longer can realize asking subtractive combination, the summation combination on historical facts or anecdotes border will be sued for peace by the output of intermediate translator again, sees Figure 10, the signal flow block diagram of summation

In figure, intermediate translator K can be voltage to electric capacity or frequency to the transmission coefficient of electric capacity, thus completes the synthesis to normal direction response.

$O_n=4KN(C_0+\frac{{\mathrm{\&epsiv;}}_0\&CenterDot;{\mathrm{\&epsiv;}}_r\&CenterDot;Fn}{d_{0}E})---\left(16\right)$

(3) tangential stress calculates

C _ito C _iIand C _iIIto C _iVtwo can be realized to differential combination, see Figure 14, through differential technique process, the overall response of differential output

$O_{\mathrm{\&tau;}x}=\frac{2{\mathrm{MK\&epsiv;}}_0\&CenterDot;{\mathrm{\&epsiv;}}_r}{a_{0}G}{F}_x---\left(17\right)$

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

(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 Figure 15.In Figure 15,1 is upper PCB substrate, and 2 is lower PCB substrate, and 3 is drive electrode, and 4 is induction electrode.

Pole plate is apart from d ₀=0.1mm upper and lower base plate inner space, except copper foil electrode, is PDMS (dimethyl silicone polymer) 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 permittivity ε during dielectric polorization _γ=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.Four capacitor cell module induction electrodes then need, with respective independently lead-out wire, to draw, so that whole assembly top and bottom outer surface can contact with measuring object easily so whole capacitance component has at least 5 pins from the side of planar package.

The utility model, 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, can obtain normal direction F to 4 electric capacity summations _ninformation, namely whole battery lead plate is all to asking F _ncontribute, simultaneously by two pairs of capacitor combination composition differential systems, can F be obtained 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, this is just achieved by design concept cleverly, and the normal direction sensitivity once changed by design parameter and tangential sensitivity and maximum linear error, can be the developer that goes together whereby and offer reference.

The face signal of the pressure signal collected and stressed size and direction vector and IMAQ combines according to chronomere by controller, controller is facilitated to carry out data analysis, and the pressure sensor using the utility model to provide can also calculate the offset distance of capacitor plate and the move distance of pole plate, can record each stressed under the vector correlation figure of three-dimensional force, thus the person's of being combined attitude, determine that pillow portion of increasing needs the distance of moving more accurately.

Controller 7 pairs of camera collections to image adopt facial pose estimate method carries out data analysis, wherein, the method flow that facial pose is estimated as shown in figure 16, concrete steps are: step one, learning phase: user lies flat on the bed, head is placed on pillow, arbitrarily overturn subsequently, make and lying on the back, to lie on one's side etc. sleep time possible attitude, each attitude keeps one to two minute, controller 7 is provided with pause button 12, when user's attitude keeps, press pause button 12, camera collection image information simultaneously, the information state of now face and pillow recorded by controller 7, under different attitude, all preserve hypograph data.

Utilize learning phase to obtain data in step 2, controller 7 and carry out fitting of a polynomial process, from image, extract characteristic vector, form face feature database.

When step 3, user use pillow, pillow is under pressure, the large micromutation of pressure, camera collection pillow state and face image, carry out feature extraction to face data, data normalization process, then be input in face feature database and carry out attitude matching, estimate facial pose, determine the position of neck, controller 7 thus send the portion of increasing 6 move instruction, motion increase portion 6 under neck.The determination of neck location is got by pressure sensor Distance positioning each other, because the distance between pressure sensor is fixing, positioning unit is provided with in controller 7, positioning unit with the position of pressure sensor for coordinate, mark pressure maximum point, the position coordinates analyzing the neck location pressure sensor drawn transforms, thus controller 7 sends position command easily, order is increased portion 6 and is moved to herein, increases under portion 6 cooperatively interacting between connecting rod move to neck.

Step 4, evaluation phase: when pillow is just brought into use, database data deficiency may be had, facial pose estimates at the situation of error, once it is not right to increase the final stop position in portion 6, can manually adjust, and press pause button, carry out IMAQ, face data storehouse is enriched, thus improves database.

Embodiment one: unconscious when people sleep stirs, lie on one's side and can be pressed onto an ear, causing wakes up will find that the basal part of the ear is ached, thus in the utility model except the improvement of pillow is pursued be applicable to neck height except, also solve being pressed onto the situation that ear aches.Pillow surface is provided with multiple ear region 11, as shown in figure 17, ear region 11 is lower than the surface of pillow, form a circle alar part around ear region 11, the schematic diagram of ear region as shown in figure 18, the material hardness of ear region 11 is greater than the material hardness of wing region, the mushroom cloud-like of hollow will be formed like this, the material of alar part is softer, lie on one's side, lie on the back, on all fours etc. all can not extrude ear during attitude, face, when lying on one's side, ear can be placed in ear region 11, because pillow is provided with multiple ear region 11, the probability that ear is placed on ear region 11 is very large, if ear is not placed in ear region 11, because the area of ear region 11 is little, and quantity is many, and ear is also be pressed on part alar part, and ear and ear region 11 form space, alleviate the pressure that ear is subject to.

Embodiment two: provide a kind of scheme preventing from being pressed onto ear in the utility model in addition, as shown in figure 19, the expanded range of cavity 5 extends in head zone 4, cavity is arranged with in the ear of head zone 4, soup stick is settled under head zone, at the side in the portion of increasing 6, a soup stick is set, soup stick top arranges a suction member, suction member is fixed on soup stick top, soup stick is that hollow-core construction connects inflator pump, when suction member is positioned at ear lower end, increase portion 6 when moving under sleeper's neck, suction member is fitted in ear lower end, bleed suction member and pillow joint portion of inflator pump is subject to gravitation and sink and form ear region 11.The adjustable length of soup stick, soup stick is stretching structure, and the instruction according to controller 7 controls soup stick length, by the image information that analytic learning phase acquisition arrives in controller 7, draws the information of ear's distance neck, thus sends soup stick length instruction.Soup stick length does not need to change under normal circumstances, and the setting of soup stick ensure that the flexibility of ear region 11, facilitates sleep comfortableness and the randomness of sleeper.

By reference to the accompanying drawings the utility model is exemplarily described above; obvious the utility model specific implementation is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that method of the present utility model is conceived and technical scheme is carried out; or design of the present utility model and technical scheme directly applied to other occasion, all within protection domain of the present utility model without to improve.

Claims (7)

1. an intelligent pillow, it is characterized in that, described pillow comprises shoulder pad (1), the pillow (2) of undulating profile and controller (7), pillow (2) comprises neck area (3) and head zone (4), shoulder pad (1) is detachably connected on the termination of the neck area (3) of pillow (2), the height of the neck area (3) of pillow (2) is higher than the height of head zone (4), the inside of neck area (3) is provided with cavity (5) and increases portion (6), controller (7) is arranged on the side of pillow, increase portion (6) and be placed in the interior connection control device (7) of cavity (5), pillow also comprises the camera gathering sleeper's facial pose and the pressure sensor detecting pressure size on pillow, camera is arranged on above pillow, pressure sensor is placed in pillow and is connected internally to controller, the Data Control camera work that controller detects according to pressure sensor, described pressure sensor is condenser type three-dimensional force sensor, sensor comprises control unit, the X-direction differential capacitor unit combination be connected respectively with control unit and Y-direction differential capacitor unit combination, described X-direction differential capacitor unit combination is passed through the tangential force of capacitance subtraction calculations X-direction and is eliminated the impact of Y-direction tangential force, described Y-direction differential capacitor unit combination is passed through the tangential force of capacitance subtraction calculations Y-direction and is eliminated the impact of X-direction tangential force, the normal force of the electric capacity read group total capacitance sensor of described X-direction differential capacitor unit combination and Y-direction differential capacitor unit combination and eliminate tangential force impact, control unit connects the controller of pillow.

2. intelligent pillow according to claim 1, it is characterized in that, described X-direction differential capacitor unit combination and Y-direction differential capacitor unit combination include two or more and mutually form differential capacitor cell module, described capacitor cell module adopts the comb teeth-shaped structure be made up of plural strip electric capacity, and each strip electric capacity comprises the drive electrode of top crown and the induction electrode of bottom crown.

3. intelligent pillow according to claim 2, 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 elastic fluid thickness, G is the modulus of rigidity of elastic fluid, τ _maxfor maximum stress value.

4. intelligent pillow according to claim 2, it is characterized in that, described two groups of drive electrodes mutually forming the strip electric capacity of differential capacitor cell module and induction electrode are provided with the skew that initially misplaces in the width direction, and dislocation bias size is identical, direction is contrary.

5. intelligent pillow according to claim 1, it is characterized in that, described pillow also comprises head rod (8), the second connecting rod (9) and the 3rd connecting rod (10), controller (7) connects head rod (8), head rod (8) is flexibly connected the second connecting rod (9), second connecting rod (9) is flexibly connected the 3rd connecting rod (10), portion (6) is increased in 3rd connecting rod (10) connection, and controller (7) controls the position of increasing portion (6) by connecting rod.

6. intelligent pillow according to claim 1, it is characterized in that, described pillow surface is provided with multiple ear region (11), and ear region (11) depression arranges pillow surface, and ear region (11) are formed with a circle alar part (12) around.

7. intelligent pillow according to claim 1, it is characterized in that, be provided with soup stick in the head zone (4) of described pillow, soup stick top is fixed with suction member, and suction member is fitted in the formation ear region, below (11) of head zone (4) interior ear.