CN108052225A - A kind of interactive interface device realized by selective excitation and the asymmetric sound wave of reception tablet - Google Patents
A kind of interactive interface device realized by selective excitation and the asymmetric sound wave of reception tablet Download PDFInfo
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/043—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using propagating acoustic waves
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
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- Acoustics & Sound (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
- Transducers For Ultrasonic Waves (AREA)
Abstract
By selective excitation and the interactive interface device that the asymmetric sound wave of tablet realizes is received the present invention relates to a kind of, including a fixed-size tablet and at least a pair of of acoustic-electrical transducer.When the tablet is transferred using the elastic mechanical ripple, that is, ultrasonic wave for clicking on generation in tablet, the time difference for reaching different sensors group derives the position of touching.PZT (piezoelectric transducer) for vibrating diaphragm is excited and is received sound wave using tablet, provides microphone and loudspeaker function.Plate edge has the slope surface of relatively middle front symmetric form, can enhance the signal for the asymmetric transmission ultrasonic wave that touching generates, and offsets symmetric form ultrasonic wave.Energy converter is symmetrically pasted compared with middle front in tablet slope surface and has opposite polarity, and symmetric form ultrasonic wave is further offset by bridging.The present invention is suitable for making the interactive interface with smooth horizontal surface, and can be fitted into existing desktop or show window by whole, realizes such as：Interactive shop window, interaction tables, interaction floor or intelligent bus platform product.
Description
The present invention is based on the patent of invention to send in one's application of on February 28th, 2014《One kind passes through selective excitation and reception
The interactive interface that the asymmetric sound wave of tablet is realized》, application number 2014100696304, a divisional application.
Technical field
The present invention relates to field of human-computer interaction, the touch interface device that more particularly to a user interacts with computer, especially
Be related to a new facility that ultrasonic wave is excited and received in tablet, which can be used for human-computer interaction, and with microphone,
Touch-screen and acoustic function.
Background technology
Touch-control implies that the input technology that computer user is allowed to reach image application control through tactile.Touch technology can be real
The man-machine interaction mode of existing more personalized can be that user brings preferably application experience.The display carrier of touch interface leads to
It is often LCD or LED screen.Touch-screen is typical application, and in the application, information is transmitted to machine by user through the finger of oneself
Device, machine by this information interpretation and show user through vision (display screen).In this process, the finger of user is past
Toward contacting touch-screen, machine is communicated information to by position of the finger on touch screen and movement.Computer can be allowed to experience object
The things of touching in reason includes：Heating power, finger pressure, high-speed motion picture camera, infrared ray, optical sensor, resistance change, ultrasonic wave receives
Device, microphone, laser wave amplitude inductor and shadow inductor etc..Touch technology is used, conventional apparatus must be equipped with touch screen
Or touch-control version, while the software that can recognize finger touching need to be loaded.
According to the data announced, such as WO 9611378 (A1), WO 0038104 (A1) and WO2004055661
(A1), calculated there are a kind of according to the ultrasonic wave clicked on or collision generates in a tablet, derive (x, y) coordinate value
Touch technology.Such technology is typically used on glass or metal material, has four pairs of ultrasonic transducers, and usually to interface
Mechanical mechanism optimize, signal-to-noise ratio is improved, so as to collect the signal that the sound wave clicked on and generated reaches different energy converters and generates.
Such technology often have corresponding algorithm, can according to touching generate vibration wave (ultrasonic wave) reach different energy converter groups when
Between difference calculate derive location information.Such technology can support the design and manufacture of up to several square metres of interactive interface.
It should be noted that herein and the mechanical elasticity ripple that is generated for touching of the ultrasonic wave that refers to of the present invention, in solid
It transfers in portion.Belong to sound wave (acoustic waves) physically, which is still.
However, possess multinomial deficiency using the invention of such technology at present.First, the area of usual interactive interface is bigger,
Precision using the touch-screen of such technology is lower, this is often as when ultrasound information carries out solid transmission in tablet
Attenuation causes.On the other hand, ability or even the electric wire access of the size of ultrasonic transducer, precision and electromagnetism interference
Quality can all impact the precision of such technology, so as to which in order to promote precision and accuracy, project planner is often
It needs to arrange protective shell outside energy converter or reduces the signal contamination that environmental factor brings by modes such as insulating coatings.So as to,
The engineering staff that the invention of the such ultrasonic wave reaching time-difference technology of tradition application is not appropriate in furniture or building trade is direct
It uses.In fact, according to existing literature search, not yet there are a kind of are integrated with still to keep the interaction of flatness after energy converter
Interface, and the interactive interface can be directly integrated into existing working environment such as double-deck glass as a part for window or desktop
In glass or restaurant tables.
Finally, due to such touch-control tablet is calculated using the mechanical oscillation ultrasonic wave transferred in tablet, usually its
Used one electric transducer of sound can both be used as microphone to record voice, can also make when loading high voltage as sound equipment
With tablet can be used as the vibrating diaphragm of microphone or loudspeaker at this time.However microphone and sound are provided simultaneously in human-computer interaction interface
When ringing function, corresponding interference can be generated.It is well known that acoustic function needs powerful output, and use is invented accordingly
Ultrasonic transducer can receive acoustic function output vibration, the vibration generate electric signal be far longer than click on generate
The intensity of signal easily causes signal saturation.
The content of the invention
The technical problems to be solved by the invention are to solve all above problems, and provide corresponding solution.This
Invention provides a kind of ultrasonic wave that will click on touch-control generation and passes through specially designed structure so that when ultrasonic wave transfers in tablet
It can be transferred according to the transfer route pre-established, so as to promote the precision of touch control detection and accuracy.
For this purpose, the present invention devises a kind of human-computer interaction tablet of planarization, which passes through the processing of specific process, from
And touch accuracy can have both been promoted, signal quality can also be optimized when providing microphone and acoustic function.The present invention is also same
When provide it is a kind of vibrated in itself by the use of tablet as sound equipment play high-fidelity scheme.
In order to realize these targets, the present invention suggested a kind of facility for exciting a reception ultrasonic wave, the facility bag first
A hard plate is contained, which can be with free vibration, and is connected with several piezoelectric ceramic transducers.The thickness of the tablet,
The eigentone of the processing at its edge and the tablet is the core parameter of the present invention.In fact, when the tablet is answered
During for detecting a position for clicking on touching, according to the algorithm of signal processing, our detections are generated asymmetric super by click
Sound wave, the click can be generated by each type objects such as finger, pen, hard plastic shell, key, ring.In order to realize good essence
Degree, the portion of the part, particularly 80kHz to 100kHz of the multi-frequency vibration wave medium-high frequency that our major concerns generate when clicking on
Point.According to experimental result, when the bigger material of object for clicking on tablet is softer, the ultrasonic spectrum for touching generation is about inclined to low frequency,
And the precision detected is lower.
The typical wavelengths of mechanical elasticity vibration wave of the present invention or so-called ultrasonic wave are 40mm, are related to tablet material
For glass or duralumin.The size of piezoelectric ceramic transducer of the present invention needs to be less than the half of wavelength.Tablet material is glass
During glass, thickness is between 0.5mm and 20mm, and the length of side is up to 6.8 meters.Under this configuration condition, click on touching and produced
Raw mechanical elasticity ripple is Lamb type ultrasonic waves.Such ultrasonic wave feature, be it is contemplated that frequency range in, only exist two
Kind vibration wave transfer mode, one kind is symmetric form, a kind of referred to as asymmetric.And when tablet material is glass or metal, it is non-
The amplitude of the ultrasonic wave of symmetric form transfer mode is significantly larger than the ultrasonic wave under symmetric form transfer mode.So as to for asymmetric
Type transfers ultrasonic wave and is detected, when the dynamics for clicking on touching is slight advantageously.However, problem is asymmetric biography
The speed passed is transferred slowly than symmetric form, and under typical glass plate application scenario, asymmetric ultrasonic wave transmission speed is
3300 meters per second, and symmetric form transmission speed is 5400 meters per second.
Do not understand the size and mode for clicking on touching in advance in view of us, it would be desirable to two kinds of transmission sides of selection in advance
One kind in formula is monitored.Another feature of Lamb type ultrasonic waves is that its transfer mode can be carried out according to boundary condition
Screening.The transmission of Lamb type ultrasonic waves can regard that inside tablet mechanical elasticity shear wave and a mechanical elasticity are indulged as
The set of ripple.It is observed that under asymmetric transfer mode, it is asymmetric distribution that shear wave, which is directed to level in tablet, and longitudinal wave
To be symmetrical, and then on the contrary, longitudinal wave is asymmetric distribution under symmetrical transfer mode.Such characteristic can be utilized to
Different transfer modes are defined and screened in monitoring.We only need to be identical by size, has completely the same specification
Acoustic-electrical transducer it is a pair of two-by-two, symmetrically pasted in the upper and lower surface of tablet respectively, excite or detect ultrasonic wave when examine simultaneously
It surveys, according to the superposition of electric signal or can subtract each other, select the ultrasonic signal strength under asymmetric mode or symmetric pattern.Typical case
In the case of, we select transducer signal a pair of two-by-two being superimposed, that is to say, that enhance asymmetric mode ultrasonic signal
While, the ultrasonic signal under symmetric pattern is eliminated by structure design.
Similar structures design, the upper and lower surface of the foot except energy converter a pair of two-by-two to be symmetrically attached to tablet,
It can be used in the side of tablet.And the requirement higher to machining accuracy at this time, at this time plate edge generally require polishing grinding,
And the smaller installation accuracy to energy converter of size requires higher.
Under above-mentioned configuration, we can detect click location using four groups of energy converters.Every group of energy converter possesses two-by-two
One group of opposite acoustic-electrical transducer occupies four geometry vertex of tablet respectively.The geometry of tablet can be square
It can be rectangle.The calculating of test position, the ultrasonic wave generated by observing touching reach the time difference on different vertex to count
It calculates.Meanwhile this tablet is also provided with the antenna properties of acoustic signals, facility of the present invention is using four groups of energy converters to examine
The acoustic signals surveyed under asymmetric mode are passed to the mode of the vibration signal in tablet, realize microphone function.So as to energy converter
The electric signal of the ultrasonic wave generation detected under asymmetric mode needs to carry out two-step pretreatment.First, it is to be adopted for energy converter
The signal collected is programmed amplification, followed by carries out bandpass filtering according to different functional requirements.It is to be examined for position respectively
Survey i.e. touch function, filtering near 100kHz and for sound-recording function, the simulation Mike in the range of 0-4kHz
The filtering of wind number.One group of recorded audio signals can be provided separately in every group of energy converter, it is contemplated that ultrasonic signal reaches different transducings
Time of device group is different, can there are phase differences between the signals that difference group energy converters provide.We are needed through the discrete of signal
Change and reconfigure to calculate the phase difference, a sound source can also be obtained from it from another point of view and believed in the position in space
Breath.
A critically important technological process is the processing method of plate edge in interactive interface according to the present invention.It is true
On, when tablet, which is subject to one to click on, to be touched, the ultrasonic wave of different transfer modes generates and with friction speed simultaneously in tablet
It transfers, and is reflected when touching plate edge.And according to the difference of edge surface quality, can be generated between both of which
Corresponding conversion, i.e., the ultrasonic wave that part asymmetric mode transfers can be changed into the super of symmetric form pattern transmission after edge reflections
Sound wave, vice versa.Such conversion can more or less give measurement touch points band of position to perplex.In general, edge is damaged
After going bad or being processed, it is present with similar problems.Tablet interface of the present invention, edge need to keep it is smooth or into
Row rounding is processed.
The present invention relates to tablet a characteristic feature be to plate edge carry out double-sided symmetrical structure the gradient add
Work.For example, the glass plate of a 10mm thickness, after the gradient is processed, thickness is in the length of 30mm, gradually by 10mm
5mm is linearly decreased to until tablet border.In the case of slow gradual change gradient processing herein, it is possible to reduce generate ultrasonic wave to
It is reflected that the generation that transfer mode converts occurs during up to edge.And another advantage, since plate edge thickness reduces,
In edge, the wave amplitude of vibration wave is further enhanced, so as to which the electric signal that the energy converter group in edge obtains obtains
Enhancing.The length of the gradient processing of 30mm is selected, the energy converter that stock size can be allowed to be 20mm diameter 0.5mm thickness is complete
It is placed in the gradient, and part can reduce the overall dimensions of interactive tablet of the present invention.Meanwhile it is left after gradient processing
Space, power cord or insulation gel coating etc. can be placed so that flat board overall maintains surface horizontal.On the other hand, Wo Menke
In gradient face, a protective shell is made using materials such as brass.The function one of the shell is by facilities such as energy converter group and electric wires
It is isolated from the outside world, another effect is that interaction tablet is integrated into a complete plane facility.So as to which interaction tablet can be by
As ordinary flat, being placed into existing double glazing or bar desk etc. very conveniently, other need to increase interactive function
Facility.The materials such as metal such as brass are selected, then can reduce interference of the environment electromagnetics signal to energy converter group.
In order to realize the acoustic function of sound broadcasting, the present invention adds the 5th group of energy converter outside four groups of energy converters
(and increasing the 6th group of energy converter during stereo function).In order to optimize the quality of sound broadcasting, sympathetic response sense is reduced, the present invention relates to
And tablet facility in edge slope portion covered with absorbing material.When realizing playing function, audio signal is played by tablet
Into surrounding air.The audio signal when on the energy converter facing each other of the 5th group of energy converter, can be added into one in loading
A phase difference, so as to fulfill the transmission of asymmetry pattern, in order to increase signal transmission effect, the present invention increases in audio signal
A base load signal has been added to be modulated.The frequency f of general voice signal in tens of Hertz between 20,000 hertz, present invention choosing
The frequency of the modulated signal f0 selected is generally between 40kHz to 4MHz, according to panel size and acoustic function demand it is different into
Row selection.When panel size is smaller, then f0 frequencies are higher.It is using the advantages of f0 signals, similar ultrasonic wave passes in tablet
Certain frequency drift can be generated when passing, passes through filtering after by modulation, it is possible to reduce frequency drift is to the shadow of voice signal
It rings.Certainly, modulated signal f0 needs to be high-frequency signal that human ear can not receive when being transferred in surrounding air by plate vibration.
This interaction facility meets following condition：
(1), when realizing sound equipment playing function, the ultrasonic wave generated by energy converter group is carried out in tablet by piezoelectric effect
It transfers.
(2), tablet transmission effect when being vibrated by asymmetric mode is better than effect when being transferred by symmetric pattern,
It needs to realize by increasing a phase difference between two energy converters receive in energy converter group signal.
(3), ultrasonic wavelength is more than the half of slab-thickness.
(4), ultrasonic activation is still linear mode in tablet, and the vibration in tablet is transferred in air then right and wrong
Linear, transmission efficiency can be observed and depend primarily upon sound frequency, i.e. f.This non-linear behavior requires that we must make
With a modulated signal f0 so that audio signal f to be played is consistent and (is otherwise present with size sound during broadcasting).
Meanwhile the selection of modulated signal f0, the signal that sound equipment playing function can be allowed to generate, the language recorded with sound-recording function
The frequency spectrum of sound signal generates distance, so as to avoid influencing each other.
The present invention also has the characteristics that including but not limited to as follows：
- the acoustic-electrical transducer used is piezoceramic disc piece, and surface has silver coating.The resonant frequency of piezoelectric ceramics
In 100kHz magnitudes.The piezoelectric ceramic piece is generally connected with circuit system by the doublet cord of 1.8mm.Overall dimensions are in diameter
20mm, thickness 2mm or so.
- acoustic-electrical transducer is piezoelectric ceramics disc, and two sides is all covered with silver coating.The energy converter in pairs, often
It compared with tablet mesion, that is, half thickness face is symmetrical that position of the group on tablet, which is,.Piezoelectric ceramics disc is non-to be contacted with tablet
It is weldingly connected with twinax cable, and is protected by metal shell on one side, form a hood structure, form a faraday cup.Pocket
Filled with resin inside cap, make it can be easy and be accurately arranged on the tablet.
- interaction tablet is using glass material and with rectangular shape.Its thickness is 6 between 20mm.The plate edge
It is symmetrical to carry out gradient processing.The angle of the slope surface is 0.1, i.e. in the slope surface length of 30mm, integral thickness declines 6mm.Energy converter
Group is opposite two-by-two, point four groups of centres for being arranged in tablet corner.Every group of energy converter is made of two piezoelectric ceramics, position compared with
Plate center face is symmetrical.The one side that piezoelectric ceramics is contacted with tablet is vibration receiving plane, another side then normally coupled to ground face.It is super
The vibration signal that sound wave generates passes through the ultra-weak electronic signal generated during energy converter, by the doublet cord of high s/n ratio, is transferred to letter
Number processing module.After this four groups of energy converters occupy four vertex of tablet, the size X and Y of interactive area are determined.It clicks on and touches
Mechanical elasticity ripple, that is, ultrasonic wave that the location information (xr, yr) touched is then generated according to touching is transferred to different transducings inside tablet
The time difference of device group calculates.5th group of energy converter is also positioned in slope surface, as sound equipment playing function.
- tablet can be compound glass, be as bonded more than layer glass in centre by polymeric coating layers such as polyethylene
Merge composition.
- realize that the energy converter of sound equipment playing function is made of two piezoelectric ceramics, in operating conditions, the vibration letter of the two
There are one 90 degree of phase differences for number tool.
- realize that the energy converter of sound equipment playing function forms for two rectangle piezoelectric ceramics, it is opposite with symmetrical structure two-by-two
It is arranged in the slope surface of plate edge.
- realize that the energy converter of sound equipment playing function forms for two ring-shaped piezo ceramics, it is opposite two-by-two to be existed with symmetrical structure
The slope surface arrangement of plate edge.
- the audio signal played is played by the group time of 10ms to 100ms, and the interval between group time can be used for gathering voice
Deng other interactive signals.
Description of the drawings
Figure 1A is one kind of acoustic-electrical transducer according to the present invention, i.e., discoid piezoelectric ceramic piece, with two-sided silver electricity
Pole and with bifilar wire bonding, by metal hood protect；
Figure 1B is the sectional view of Figure 1A；
Fig. 2A is the structure diagram of interactive interface according to the present invention；The interface is by a tablet and five groups of piezoelectric ceramics
Composition has rectangle structure；
Fig. 2 B are the partial sectional views of the tablet of Fig. 2A descriptions, which is that half thickness face has carried out slope compared with middle front
Face processes, and acoustoelectric sensor is symmetrically installed in slope surface compared with middle front；
Fig. 2 C are the schematic diagrames that the space that slope surface is formed in Fig. 2 B is filled by absorption of vibrations material, with interacting tablet after filling
A horizontal surface has been integrally formed；
Fig. 3 is the cross-sectional view that interactive interface according to the present invention combines metal shell, by the shell,
The interactive interface that the present invention is built can be fitted into corresponding product as an entirety.
Specific embodiment
Below in conjunction with the accompanying drawings, the present invention will be further described in detail.
Referring to Figure 1A and Figure 1B, elastic vibration ripple, that is, ultrasonic wave that the present invention clicks on touching generation by detecting is determined
Position is, it is necessary to using acoustic-electrical transducer, and typical acoustic-electrical transducer is discoid piezoelectric ceramic piece, with upper and lower two layers of silver coating
That is electrode 101,102.101 and 102 by return silver-plated and silver-plated protection band 109 technique, can be in the same water of piezoelectric ceramics
Plane is welded.Piezoelectric ceramics have polarity, with P or+represent.Using one thin doublet cord 105, after peelling off insulating layer,
By silent partners cable 106 with electrode 102 by being weldingly connected, by interior stock cable 108 with electrode 101 by being weldingly connected.Metal pocket
Cap 103 covers and protects piezoelectric ceramics and solder joint.The inner surface of hood scribbles insulating cement 104, and guarantee does not occur short with electrode 101
Road；Meanwhile hood is connected by solder joint 111 with 106 and 102 electrodes.At this point, metal hood 103 is together formed with electrode 102
One faraday cup.Space 112 inside metal hood 103 is filled by transparent or coloured epoxy resin, so as to build one
The complete assemblies with certain mechanical performance that can move freely.Hood is made by punching press, and leaves opening 110 for paired cable
It involves.Insulating coating 107 covers out of twinax cable strand 108 until piezoelectric ceramics electrode 101, ensure its not with electrode
102 occur short circuit.The hood structural thickness is determined by paired cable diameter, is usually no more than 2mm.One of piezoelectric ceramic piece
Typical thickness is 0.5mm, and a representative diameter is 20mm.
Referring to Fig. 2A, the edge of an interactive tablet is such as schemed after slope surface is processed at its edge by pasting four groups of attachment
PZT (piezoelectric transducer) group shown in 1, number is N1, B2, R3 and J4 respectively.Energy converter in each group, according to its residing planar surface
Up and down, be respectively labeled as A or B.The orientation of four groups of energy converters forms four vertex of interworking area, and is formed one long
Square interaction area.In this area, the vibration wave of the click touching occurred at (xr, yr) reaches different energy converter groups
Time t1, t2, t3, t4 are recorded and are sent at processing chip MC, and location information (xr, yr) can be obtained by geometry calculating.
It should be noted that the mechanical elasticity ripple that the ultrasonic wave that the present invention refers to generates for touching, the vibration wave are transferred in solid interior,
The ultrasonic wave is still the one kind for belonging to sound wave (acoustic waves).It should be further noted that the biography of the ultrasonic wave
It passs speed mainly to be determined by the material i.e. frequency of vibration wave of tablet and for certain value, such as tablet material is glass, is examined after filtering
Survey targeted vibration wave for 100kHz when, according to technical manual, ultrasonic wave transmission speed is 3300m/s.Slope surface is processed not
It can influence ultrasonic wave transmission speed.That is relation is only determined by the distance of touch points to energy converter geometric center between t1, t2, t3, t4
It is fixed.Location information theoretically can be derived according to three range informations, the use of four groups of energy converters of the invention is except increasing by one group
Surplus can also maintain the geometrical symmetry of tablet, so as to maintain the uniformity of accuracy of detection.The overall dimensions of interactive interface are non-
Panel size, but plate center parallel surface, dimension mark are (X, Y), center 0 i.e. rectangular central position therefore.
The environment voice messaging that tablet receives can be carried out summarizing inspection by this four groups of energy converters simultaneously by piezoelectric effect
It surveys.5th group of piezoelectric ceramics is equally pasted onto on tablet labeled as H1A and H1B, has rectangle or circular dimension and size is big
Yu Qiansi group piezoelectric ceramics, and by the adverse effect of piezoelectric effect, audio signal is converted into vibration wave, is used as by tablet and shaken
The signal is transferred in surrounding air so as to fulfill sound equipment or loudspeaker function by film.
Five groups of energy converters of interactive interface attachment pass through cable connection to signal processing module MC.One is included inside MC
Signal filter amplification circuit.For preceding four groups of energy converters, the peak value for clicking on the ultrasonic signal generated during touching generally exists
100kHz or so, MC are filtered near 100kHz, so as to obtain the time difference of ultrasonic wave arrival.Simultaneously, at MC
Manage module low-frequency range provide filtering so that the environment voice signal that four groups of energy converters are detected simultaneously by summarize it is flat
, microphone function is realized.
For the 5th group of energy converter, MC processing modules have signal amplification circuit, the audio signal of required broadcasting are passed through
Energy converter H1 is played.Broadcast multiple segments voice separately is selected during broadcasting, section is 10ms to 100ms, the reason is that H1 plays generation in order to prevent
Signal to remaining energy converter group generate signal saturation effect.The audio signal is in loading in the opposite two-by-two of the 5th group of energy converter
Energy converter on when, a phase difference can be added into, so as to fulfill the transmission of asymmetry pattern, effect is transferred in order to increase signal
Fruit, invention increases a base load signals in audio signal to be modulated.The frequency f of general voice signal is in tens of Hertz
To between 20,000 hertz, the frequency for the modulated signal f0 that the present invention selects is generally between 40kHz to 4MHz, according to panel size
It is made choice with the difference of acoustic function demand.When panel size is smaller, then f0 frequencies are higher.Using the advantages of f0 signals
In similar ultrasonic wave can generate certain frequency drift when being transferred in tablet, pass through filtering after by modulation, it is possible to reduce
Influence of the frequency drift to voice signal.
Processing module MC is connected to computer or other modules 206 with stronger big computing function by data cable in itself
Place.At 206 can be computer PC, have software can according to ultrasonic wave reaching time-difference derive calculate (xr, yr) position and will
It is projected on Virtual Space or computer screen, realizes the size (X, Y) of interactive interface and the pixel size of computer screen
One-to-one relation.Particularly when tablet is using glass or other transparent or translucent materials, computer 206 passes through projecting apparatus
When screen can be projected in interaction surface, the detection of touching can be will click on as corresponding input tool, it such as will once
Touching is modeled as left mouse button click, and touching is modeled as clicking by mouse right button twice in the short time.Particularly interaction surface (X, Y)
The area of Projection Display can be more than, the click outside projected area at this time when being detected, can be used as specific button defeated
Enter function, if waken up keyboard, open recording, open the functions such as audio broadcasting.
Referring to Fig. 2 B, after one group of acoustic-electrical transducer N1A and N1B is made by the method for Fig. 1, there is opposite polarity P,
Or N1A is that ten, N1B is a polarity.This group of energy converter is bonded in by glue on tablet 200, and tablet 200 is processed by slope surface,
Upper and lower slope surface is geometrically symmetric compared with tablet mesion, that is, half thickness face 201.Slope surface is determined by angle a, depth b and length L
It is fixed.The feature of slope surface processing is more smooth compared with common chamfer machining, and slope surface angle a is generally 0.1rad, and slope surface is long
Degree L is generally 30mm to 40mm, can be used for arranging energy converter group N1A and N1B so as to form enough spaces 203, ensures it
Highly it is no more than tablet upper surface.Plate edge maintains vertical edge or rounding.Tablet material is glass, plastics or metal.It changes
Energy device group N1A and N1B are bridged by cable.Physical characteristic when being transferred according to Lamb type ultrasonic waves inside tablet is delayed
Gentle slope face has the function of to enhance asymmetric mode sound wave and attenuation symmetric pattern sound wave.Postponed by cloth, the energy converter group into
It is non-right in two kinds of vibration transfer modes that one step generates when by bridge joint the ultrasonic wave that it is detected can be made to be touched to click on
Title pattern transfer part, and symmetric pattern partially due to energy converter group polarity mutually be canceled out instead.It illustrates further,
Mechanical elasticity ripple, that is, ultrasonic wave when passing through tablet slope surface have speciality, the ultrasonic wave symmetrically transferred similar to shear wave into
It can occur when entering slope surface to the transmitting inside tablet, so as to hardly enter energy converter group, and asymmetric sound wave is being put down similar to longitudinal wave
Plate slope surface will not emit, and its vibration can amplify in the apex of tablet slope surface, even so as to subtle touching,
It can detect that enough signals derive for position by energy converter group.Under special circumstances, i.e., piezoelectric ceramics is pasted onto slope surface
At outer rim, and the diameter d of this characteristic size, that is, discoid ceramic is far smaller than slope surface length L, and slope surface depth b is less than or equal to put down
The half of plate thickness e then only need not can detect enough information using N1A and N1B with using wherein 1 simultaneously.This is
Because the ultrasonic wave that most symmetric forms transfer at this time passes through complete attenuation after the reflection of slope surface inner edge.
Referring to Fig. 2 C, tablet 200 after piezoelectric ceramic transducer group shown in FIG. 1 is bonded, vacate by slope surface processing rear plate
Space 203 be then filled by resin material 204, filling rear plate maintain surface be horizontal plane.Resin material is transparent
Or it is coloured, it is vibration wave absorbing material, there is the characteristic for absorbing ultrasonic activation.Potting resin material can some effects vibration
The detection of ripple.Simultaneously because being processed using slope surface, resin thickness is maximum at plate edge, and absorption function can be most strong, can be big
The big vibration wave that reduces reaches the echo effect generated behind edge by reflection.It is adjusted and experimental configuration, appropriate resinous wood
The filling of material can increase time difference computational algorithm in the case where not produced bigger effect to the detection of ultrasonic signal
Accuracy.One typical configuration is that the attenuation of ultrasonic signal amplitude is no more than 10% before and after filling.So-called echo effect, refers to
It is when clicking on touch position (xr, yr) close to the vertex of tablet, can be compared by reflecting the ultrasonic wave generated in plate edge
Original ultrasonic reaches a certain group of energy converter earlier, fails so as to cause calculating.Generally can by increasing amount of redundancy, that is,
Using more than three groups sensors, cross check is carried out such as the four groups of energy converters of the invention used.It is filled out by using resin material
The algorithm of data processing can be further simplified by filling after eliminating echo effect.
Referring to Fig. 3, a rectangular flat plate 300 processes by slope surface by mode as shown in Figure 2 B, and is bonded with pressure
It after electroceramics energy converter group, is protected in surrounding by metal shell 301, the metal shell material is stainless steel or Huang
Copper, panel beating, edge polish flat, so as to which the metal shell can put down the upper surface adjustment return water of interactive tablet.Tablet
It is realized and separated by L-type assembly ware 302 between 300 and metal shell 301, which can be consistent with metal shell
Using materials such as plastics, rubber, horizontal plane is Nian Jie with metal-back inner surface, and vertical plane is bonded in plate edge vertical plane.It is flat
Leakproofness between plate and metal shell is ensured by insulating cement 303.The design makes flat board overall realize surface as level, so as to
It can be mounted in a manner of similar simple glass tablet and be assemblied in any desired larger sized desktop, ground, exhibition booth etc.
On the nested structure 304 of product, the problem that the fringe region that generates after slope surface processing is brought for assembling is avoided, and into one
Step distinguishes the mac function of tablet, that is, piezoelectric ceramics group with external environment.
The typical case of the present invention, is to be configured to the tablet for being equipped with metal shell in building as a whole,
Such as the centre of window, floor or desktop, input is used as by the positioning function and microphone location function of touching click location and is set
It applies, output equipment or cooperation projecting apparatus is used as output equipment by loudspeaker or acoustic function, realize human-computer interaction.This hair
A typical tablet used in bright is thickness 10mm, and material is the tablet of glass, and area is 1 square metre.It is flat under the thickness
Plate can support people to stand on tablet completely, by detecting touching for the hard objects such as heel and tablet, realize one
Human-computer interaction ground, the position of detection or monitoring people in building.
To sum up, the present invention is suitable for making an interactive interface with smooth horizontal surface, can integrally be fitted into
One desktop or a show window are realized such as：Interactive display show window, interaction tables, interaction floor, intelligent bus platform, billboard,
A variety of interactive products such as public display card.The method of the present invention can be improved carries out touch points using ultrasonic wave reaching time-difference technology
The sensitivity of the touch-control class facility of position detection.Realizing that it is same that click touch position detects by the tablet that the present invention makes
When, for microphone, the characteristic of the different acoustic signals of loudspeaker and touching detection, to interaction tablet and signal processing side
Formula has carried out special designing, so that three kinds of functions can utilize acoustic-electrical transducer in different frequency section, respectively
It is completed using piezoelectric effect and reverse piezoelectric effect, so as to simplify the design and signal processing at corresponding multimedia interactive interface,
Product cost is reduced, and improves man-machine interaction experience.
The present invention is described in detail above, its object is to allow the personage for being familiar with this field technology that can understand this
The content of invention is simultaneously carried out, and it is not intended to limit the scope of the present invention, all Spirit Essence institutes according to the present invention
The equivalent change or modification of work should all cover within the scope of the present invention.
Claims (7)
1. a kind of interactive interface device realized by selective excitation and the asymmetric sound wave of reception tablet, the interactive interface device
Include the tablet and at least one set acoustic-electrical transducer of a certain size；It is characterized in that：There are one the tablet at least has
Local geometric region can generate attenuation effect for the ultrasonic wave that symmetric form transfers, so as to ensure that the acoustic-electrical transducer is main
What is detected is the ultrasonic wave of the asymmetric pattern transmission that excitation generates when clicking on touching；The surface of tablet in the regional area
Non-horizontal surface but compared with the symmetrical domatic surface with certain angle of tablet mid-height plane；The acoustic-electrical transducer simultaneously
It is opposite two-by-two, it is arranged symmetrically on tablet compared with mid-height plane；The acoustic-electrical transducer is piezoelectric ceramics disc, and two sides is equal
Covered with silver coating electrode；In pairs, and with opposite polarity, every group of position on tablet is the acoustic-electrical transducer
It is symmetrical compared with tablet mesion, that is, half thickness face；The face electrode that piezoelectric ceramics disc is contacted with tablet is welded with twinax cable
It connects connected, and is protected by metal shell, form a hood mechanical structure, form an electromagnetic shielding faraday cup；In hood
Portion is filled with resin, make its it is internal whole there is certain mechanical performance, can be easy and be accurately arranged on the tablet；It is described
Piezoelectric ceramics disc is discoid, semicircle or rectangle；The edge of the tablet needs to keep smooth or progress rounding adds
Work；Simultaneously：
a)：The acoustic-electrical transducer is connected by being bonded with the tablet, and is passed through conductor wire and be connected to Signal Processing Element
Behind place, the area that tablet is occupied at slope surface by the gradient is filled with metal powder, occurs instead in plate edge so as to reduce ultrasonic wave
The echo effect for penetrating or reflecting and generating；
b)：The tablet enters since the area that slope surface processing is vacated is covered by metal shell available for the interface is assembled
Other products, the case surface keep horizontal with plate center surface；
c)：The tablet slope surface radian is less than or equal to 0.1rad.
2. interactive interface device according to claim 1, it is characterised in that：Four apex portions of the tablet respectively by
Acoustic-electrical transducer described in four groups occupies, and passes through circuit and program technic, derives a click touching and is happened at the tablet table
Position (xr, yr) on face；Derivation method is the difference for reaching the passing time of different energy converter groups according to touching is clicked on；It is described
It is that rigid objects are generated with tablet short-time contact to click on touching.
3. interactive interface device according to claim 2, it is characterised in that：Any group or several of the acoustic-electrical transducer
Group, using vibrating diaphragm of the tablet as phonetic entry, and by bandpass filtering, selectivity receives low-frequency sound wave signal,
Simulate microphone records voice signal.
4. interactive interface device according to claim 2, it is characterised in that：The interactive interface device has the 5th group of sound
Electric transducer, by the acoustic signals of the selective excitation modulating audio frequency on the tablet, for the playing function of audio signal
That is loudspeaker function；The 5th group of acoustic-electrical transducer is discoid or rectangle；Realize sound equipment playing function energy converter by
Two piezoelectric ceramics disc compositions, in operating conditions, the vibration signal of the two has the phase difference there are one 90 degree；The interaction
Interface device can realize that audio signal is modulated by a high-frequency signal by programming；The 5th group of acoustic-electrical transducer with first four groups
Acoustic-electrical transducer is equally placed in the slope surface of tablet, and covered with epoxy resin；The characteristic of vibration is absorbed by epoxy resin,
And audio signal is played by group time, avoids causing the signal saturation of other sensors group.
5. interactive interface device according to claim 2, it is characterised in that：The interactive interface device has circuit and journey
Sequence component, can by programming, the analog buttons on the tablet, and provide played pre-recorded music interaction function or
Location information (xr, yr) is transferred to other facilities for being used interchangeably.
6. interactive interface device according to claim 2, it is characterised in that：The interactive interface device has circuit and journey
Sequence component can establish the click touch position (xr, yr) detected and the picture on computer screen by wirelessly or non-wirelessly mode
One-to-one relationship between element；When computer screen is projected in the planar surface, while the size and tablet of projection screen
When the characteristic size of detection touching realizes consistent through overregulating, the touch position detected can be overlapped with projected position realization, from
It and can be with analog mouse cursor function；One click analog mouse left button function, mouse can be simulated by being clicked on twice in succession in the short time
Mark right button function；Sound-recording function and loudspeaker function can be attached with computer equipment or sound card equipment simultaneously, be handed in touch-control
The function of playing video or music is realized when mutually.
7. interactive interface device according to claim 1, it is characterised in that：The interactive interface device has smooth table
Face can integrally be fitted into a desktop or a show window, realize：Interactive display show window, interaction tables, intelligent bus station
Platform, billboard or public display card；And ground is fitted into, realize interaction floor smart home product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711379927.0A CN108052225B (en) | 2014-02-28 | 2014-02-28 | Interactive interface device for selectively exciting and receiving flat asymmetric sound waves |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410069630.4A CN104881184B (en) | 2014-02-28 | 2014-02-28 | A kind of interactive interface realized by selective excitation and the asymmetric sound wave of reception flat board |
| CN201711379927.0A CN108052225B (en) | 2014-02-28 | 2014-02-28 | Interactive interface device for selectively exciting and receiving flat asymmetric sound waves |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410069630.4A Division CN104881184B (en) | 2014-02-28 | 2014-02-28 | A kind of interactive interface realized by selective excitation and the asymmetric sound wave of reception flat board |
Publications (2)
| Publication Number | Publication Date |
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| CN108052225A true CN108052225A (en) | 2018-05-18 |
| CN108052225B CN108052225B (en) | 2020-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711379928.5A Expired - Fee Related CN107918508B (en) | 2014-02-28 | 2014-02-28 | Interactive device for selectively exciting and receiving asymmetric sound waves |
| CN201711379927.0A Expired - Fee Related CN108052225B (en) | 2014-02-28 | 2014-02-28 | Interactive interface device for selectively exciting and receiving flat asymmetric sound waves |
| CN201410069630.4A Expired - Fee Related CN104881184B (en) | 2014-02-28 | 2014-02-28 | A kind of interactive interface realized by selective excitation and the asymmetric sound wave of reception flat board |
| CN201711379926.6A Expired - Fee Related CN108052224B (en) | 2014-02-28 | 2014-02-28 | Interactive interface device for selectively exciting and receiving flat asymmetric sound waves |
| CN201711374075.6A Expired - Fee Related CN107967084B (en) | 2014-02-28 | 2014-02-28 | Interactive device realized by exciting and receiving asymmetric sound waves |
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| CN201711379928.5A Expired - Fee Related CN107918508B (en) | 2014-02-28 | 2014-02-28 | Interactive device for selectively exciting and receiving asymmetric sound waves |
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| CN201410069630.4A Expired - Fee Related CN104881184B (en) | 2014-02-28 | 2014-02-28 | A kind of interactive interface realized by selective excitation and the asymmetric sound wave of reception flat board |
| CN201711379926.6A Expired - Fee Related CN108052224B (en) | 2014-02-28 | 2014-02-28 | Interactive interface device for selectively exciting and receiving flat asymmetric sound waves |
| CN201711374075.6A Expired - Fee Related CN107967084B (en) | 2014-02-28 | 2014-02-28 | Interactive device realized by exciting and receiving asymmetric sound waves |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108005341A (en) * | 2017-12-15 | 2018-05-08 | 苏州桃格思信息科技有限公司 | A kind of method and device that augmented reality floor is realized by ultrasonic wave |
| CN108337618B (en) * | 2018-04-25 | 2024-05-07 | 精拓丽音科技（北京）有限公司 | Electronic assembly |
| CN108845679B (en) * | 2018-05-02 | 2019-08-02 | 上海交通大学 | Full keyboard inputs acquisition methods on remote subscriber's touch screen |
| CN117664203B (en) * | 2024-01-31 | 2024-04-26 | 成都楷模电子科技有限公司 | High-frequency ultrasonic sensor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1242096A (en) * | 1996-12-25 | 2000-01-19 | 埃罗接触系统公司 | Grating transducer for acoustic touch screen |
| CN1269043A (en) * | 1997-05-14 | 2000-10-04 | 埃洛接触系统公司 | Acoustic touch position sensor using a low acoustic loss transparent substrate |
| CN2669538Y (en) * | 2004-02-02 | 2005-01-05 | 苏州银河龙芯科技有限公司 | Electroacoustic/acoustoelectric transducer for information acoustic wave transmission system |
| US20070169555A1 (en) * | 2006-01-11 | 2007-07-26 | Sony Corporation | Display unit with sound generation system |
| CN201107765Y (en) * | 2007-08-27 | 2008-08-27 | 禾瑞亚科技股份有限公司 | Surface acoustic wave touching control panel capable of automatic regulating received signal intensity |
| CN102714771A (en) * | 2010-01-08 | 2012-10-03 | 原子能及能源替代委员会 | Sound wave detection device and sound wave source location system |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2811107B1 (en) * | 2000-06-29 | 2002-10-18 | Jean Pierre Nikolovski | PRECISION INTERACTIVE ACOUSTIC PLATE |
| TW200530922A (en) * | 2003-11-12 | 2005-09-16 | Elo Touchsystems Inc | Acoustic wave contact detecting apparatus |
| CN100375001C (en) * | 2005-06-14 | 2008-03-12 | 袁芳革 | Ultrasonic positioning control device and method thereof |
| JP4809130B2 (en) * | 2006-05-31 | 2011-11-09 | タッチパネル・システムズ株式会社 | Acoustic wave type touch panel |
| FR2948787B1 (en) * | 2009-07-29 | 2011-09-09 | Commissariat Energie Atomique | DEVICE AND METHOD FOR LOCATING A LOCALLY DEFORMING CONTACT ON A DEFORMABLE TOUCH SURFACE OF AN OBJECT |
| US8576202B2 (en) * | 2010-03-25 | 2013-11-05 | Elo Touch Solutions, Inc. | Bezel-less acoustic touch apparatus |
| CN102375624A (en) * | 2010-08-27 | 2012-03-14 | 刘中华 | Ultrasonic handwriting board of flat plate structure |
| CN102609155B (en) * | 2012-02-21 | 2015-05-20 | 成都吉锐触摸技术股份有限公司 | Double-touch-face surface acoustic wave touch screen |
-
2014
- 2014-02-28 CN CN201711379928.5A patent/CN107918508B/en not_active Expired - Fee Related
- 2014-02-28 CN CN201711379927.0A patent/CN108052225B/en not_active Expired - Fee Related
- 2014-02-28 CN CN201410069630.4A patent/CN104881184B/en not_active Expired - Fee Related
- 2014-02-28 CN CN201711379926.6A patent/CN108052224B/en not_active Expired - Fee Related
- 2014-02-28 CN CN201711374075.6A patent/CN107967084B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1242096A (en) * | 1996-12-25 | 2000-01-19 | 埃罗接触系统公司 | Grating transducer for acoustic touch screen |
| CN1269043A (en) * | 1997-05-14 | 2000-10-04 | 埃洛接触系统公司 | Acoustic touch position sensor using a low acoustic loss transparent substrate |
| CN2669538Y (en) * | 2004-02-02 | 2005-01-05 | 苏州银河龙芯科技有限公司 | Electroacoustic/acoustoelectric transducer for information acoustic wave transmission system |
| US20070169555A1 (en) * | 2006-01-11 | 2007-07-26 | Sony Corporation | Display unit with sound generation system |
| CN201107765Y (en) * | 2007-08-27 | 2008-08-27 | 禾瑞亚科技股份有限公司 | Surface acoustic wave touching control panel capable of automatic regulating received signal intensity |
| CN102714771A (en) * | 2010-01-08 | 2012-10-03 | 原子能及能源替代委员会 | Sound wave detection device and sound wave source location system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107967084A (en) | 2018-04-27 |
| CN107918508A (en) | 2018-04-17 |
| CN108052224B (en) | 2021-03-12 |
| CN107967084B (en) | 2021-03-09 |
| CN108052225B (en) | 2020-12-15 |
| CN104881184B (en) | 2018-04-10 |
| CN108052224A (en) | 2018-05-18 |
| CN107918508B (en) | 2021-03-09 |
| CN104881184A (en) | 2015-09-02 |
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