CN1573666A - Touch-free input equipment and method - Google Patents
Touch-free input equipment and method Download PDFInfo
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- CN1573666A CN1573666A CN 03178377 CN03178377A CN1573666A CN 1573666 A CN1573666 A CN 1573666A CN 03178377 CN03178377 CN 03178377 CN 03178377 A CN03178377 A CN 03178377A CN 1573666 A CN1573666 A CN 1573666A
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Abstract
A touch-free input equipment and a method. The input equipment includes a display device, an infrared detection element array for detecting X coordinate or Y coordinate for an operation body and a first detection circuit and a first calculating device corresponding to the array, a second detection element array and a corresponding second detection circuit parallel to the infrared detection element array and separating with a certain distance, and a second calculating device for calculating the position information of the operation body along Z axis by using the output information of the second detection circuit, a main control device for processing the position information, and an indicate device for emitting visual or audible warning information for warning the operator to avoid not to touch the screen of the display device based on the output information of the main control device. The technology is mainly used for public equipments that are used frequently.
Description
Technical field
The present invention relates to a kind of touch input device and method exempted from.
Background technology
As easy-to-use input media, button, keyboard and touch-screen have obtained using widely in many occasions.Concerning some equipment that is installed in the public place, use the operator numerous, flow of personnel is big, as easy as rolling off a log cross-infection and the propagation that causes some disease of button, keyboard and touch-screen.In use, button, keyboard and touch-screen are touched or are pushed damage easily.Simultaneously, touch-screen also has another shortcoming, and the image that the touch point is located on the display face is operated body and blocks, and can't see clearly.
Therefore, can realize the input function of button, keyboard or touch-screen, and the input media that need not to touch (promptly exempting to touch) operation is current required.
Existing practicality exempt to touch in the input technology, the reflective infrared acquisition switchgear of similar automatically-controlled door and automatic faucet is arranged, use but only be suitable for single inductive switch.External certain company of latest report develops a kind of contactless guidance panel, and this device utilizes infrared reflection optical profile type switch to finish original input operation of leaning on button and switch to carry out.
Reflective infrared switch device is difficult to realize the accurate detection and location to the operating body coordinate when screen or keyboard area are big, be not suitable for the touch input operation of exempting from of many key boards or general computer display.
In many input technologies, also have other on principle, needn't touch any material object and just can carry out input operation.With the infrared touch panel is example, operating body (as an operator's finger or a pencil etc.) only need be deep into and block Infrared in the framework and just can carry out input operation, detect on the principle and do not require operating body and any panel, for example the panel of graphoscope contacts.Why being called touch-screen, is because the degree of depth that probes into of utilizing the panel of graphoscope to come the positioning action body in the design of prior art.When operating body stretches into from outside to inside, when its end touched the panel of display, the operator just knew that operating body has stretched into and puts in place, can carry out input operation.It is inevitable and necessary that such design concept and design idea become touch, therefore formed the technology prejudice of necessary touch operation.
In addition, in order to reduce the collimation error, make echelette as far as possible near display face, the framework of the infrared touch panel of prior art structurally all is designed to thin as far as possible, be close to the panel of display and install, though the operator do not think, also can touch display screen unavoidably.
Although there is above-mentioned shortcoming, infrared touch panel adopts the correlation detection technique, compare with the guidance panel of the reflective infrared detection technology of aforementioned employing, detection and location to the operating body coordinate are comparatively accurate, therefore more are hopeful to be modified into the touch-free input device that is applicable to many key boards or general computer display.
Infrared touch panel generally comprises the framework of the rectangle that has four limits, be arranged on fired infra-red component and infrared receiver component on the framework, the testing circuit that is connected with infrared, receiving element, judge according to the detection signal of testing circuit output and to calculate the touch point coordinate position obtaining the calculation element of testing result, at testing circuit, calculation element and utilize the telecommunication circuit that transmits information such as detection signal and testing result between the master control set of this testing result.
The detection signal of testing circuit output has been represented the power of the light signal that receiving element experiences, and detection signal has generally converted digital quantity to from analog quantity in the prior art.The function of calculation element often is to be finished by the processor of single chip computer of touch-screen.Here said master control set, its function generally are to be finished by the computing machine of using this infrared touch panel, and this computing machine also can be finished the function of calculation element and master control set simultaneously.Telecommunication circuit can be simple line, the data call relation between distinct program module or the storer, the perhaps serial between computing machine and external unit, parallel communications device etc.
Prior art products generally is that testing circuit and calculation element all are arranged in the framework, and the computing machine of using this touch-screen is born the role of master control set simultaneously.From the framework to the main frame, promptly between calculation element and the master control set, transmit testing result information by RS-232 or usb communication circuit.
As depicted in figs. 1 and 2, the 108th, framework, the 109th, graphoscope, the 101st, the front surface of framework, the 103rd, the peripheral edge portion of framework is in order to be installed together designed with graphoscope, if installation method does not need to use peripheral edge portion, this peripheral edge portion 103 can not have yet.The 104th, the inner side edge of framework, general the same with the indicator screen window big or more roomy around it around formed window, to guarantee the complete of the screen visual field.The mounting means upper frame should be arranged on the front of indicator screen, and the window of its window and indicator screen aligns mutually.Infrared emission is relative respectively with receiving element to be installed in the framework, and the Infrared that infrared emission component sends is propagated in the frame window plane and arrived infrared receiver component.Because framework all does very thinly, fired infra-red component and infrared receiver component are actually and nestle up that framework front surface 101 is provided with.The 102nd, the rear surface of framework, when touch-screen is installed on the display and the front surface 105 of display casing be close together.The 106th, the panel of display.Window portion in the middle of the framework is complete empty, has only Infrared to pass through, and does not have any entity component.
The infrared touch panel technology is of long duration, the United States Patent (USP) " Infraredlight beam X-Y position encoder for display devices " (US 3775560) and " Coordinate detection system " (US 3764813) of authorizing in 1973 has disclosed most of prior art, follow-up patent has proposed some improvement projects in succession, and its principle of work can be referring to the United States Patent (USP) " Apparatus and method to improve resolution ofinfrared touch systems " (US 6429857) of mandate in 2002.
As shown in Figure 3, for principle of work is described, the space of the infrared emission of having drawn and receiving element is provided with relation.Here being that initial point O has set up rectangular coordinate system with the touch-screen lower left corner, is the Y-axis positive dirction from the O point straight up, is to the right the X-axis positive dirction from O point level, and Z axle ecto-entad vertically passes O point (with the direction of leaving the operator for just).Arranging fired infra-red component in framework one side along a coordinate axis, these radiated elements form the radiated element array, Dui Ying infrared receiver component is lined up the receiving element array with it, be arranged on relative framework opposite side, radiated element array and receiving element array can be collectively referred to as the detecting element array.The detecting element array of arranging along X-direction is the X detecting element array of detecting operation body X coordinate, and infrared light beam arrives receiving element along the arrow line parallel with Y-axis from radiated element, forms an X-ray grid plane in XOY plane.
In view of this same plane relation of detecting element array and its grating that forms, say that certain grating (grating planar) also just means the detecting element array of mentioning this grating of formation simultaneously.Can in XOY plane, form a Y grating planar according to as a same reason Y detecting element array being set.
The luminophor of fired infra-red component and the photosensitive body of receiving element all have certain area, and be again owing to reasons such as scatterings, so formed grating will inevitably have certain thickness in Z-direction, general in 2～10 millimeters scope.In the prior art, ignoring its thickness, is a plane with its equivalence.
Operating body can probe into from outside to inside in X, the Y grating planar along Z axle positive dirction and carry out input operation, and it is luminous that testing circuit order drives each radiated element one by one, and the output signal of the detection receiving element relative with light-emitting component.The testing circuit of detecting element correspondence produces the relevant detection signal according to the situation that Infrared is blocked, this detection signal sends calculation element to through telecommunication circuit, calculation element has judged whether that according to the variation of detection signal operating body enters in the grating planar, promptly whether there is touch event to take place, the X coordinate and the Y coordinate that then calculate operating body are arranged.Testing result information such as above-mentioned touch event and operating body coordinate are transmitted to master control set output by telecommunication circuit again.
By its principle of work as can be known, the infrared touch panel of prior art only in one plane is provided with the detecting element array, form a grating planar, therefore can only whether enter in this grating planar and X, the Y planimetric coordinates position of definite this operating body by the detecting operation body, and can't pass the distance (probeing into the degree of depth) that continues to probe into behind this grating planar by detecting operation body leading section, promptly can't detect this moment operating body along the position of Z-direction.
To a touch-free input device, should make operating body when input operation, be easy to avoid touching for example panel of display device in the design.Should have simultaneously in time provides the function of operating body along Z-direction position information, because this positional information is the foundation that can not touch in order to judgement.
Input media is generally isolated to be used, and install such as cooperations such as display device with other, could realize complete technique effect.As an equipment of using above-mentioned touch-free input device, should be able to make full use of operating body that this input media transmits positional information along Z-direction, in time provide the various promptings that help to exempt to touch input to the operator.And above-mentioned feature and function exactly prior art infrared touch panel and to use the equipment of this screen not available.
Summary of the invention
Purpose of the present invention is exactly in order to overcome the above problems, existing infrared touch panel is improved, so that a kind of X, Y planimetric coordinates position that can the detecting operation body to be provided, again can the detecting operation body along the touch-free input device of Z-direction positional information, and then provide a kind of touch input device of exempting from of this input media of application, on Z-direction, probe into depth information to operator's prompting operation body, make the operator note avoiding touching keyboard or display face.Simultaneously, a kind of method of exempting to touch input is proposed.The present invention also proposes the architecture advances scheme, makes the operator be easy to avoid touching keyboard or display face.
The present invention realizes the technical scheme of above-mentioned purpose:
A kind of touch input device of exempting from comprises: display device, the infrared detection device array of detecting operation body X coordinate or Y coordinate and corresponding with it first testing circuit and first calculation element, it is characterized in that also comprising: parallel with described infrared detection device array and separate the second detecting element array and corresponding second testing circuit of certain distance, and utilize second calculation element of the output information calculating operation body of above-mentioned second testing circuit along the Z-direction positional information, the master control set that above-mentioned positional information is handled, and the suggestion device of avoiding the warning message of touch display unit panel according to the alert operator that master control set output information is sent visual or audible.
A kind of touch inputting method of exempting from comprises:
A, the distance that the display device panel external space is left described panel according to operating body are divided into the step of non-control district, operational zone and zone of alarm from big to small at least;
B, in the operational zone, receive to handle the step of the various input operations that operating body carried out;
C, when operating body enters zone of alarm by the operational zone, avoid touching the step of the visual of display device panel or audible warning message to operator's its attention that gives a warning;
D, after operating body leaves zone of alarm, cancel the step of this warning message.
Adopt technique scheme, in conjunction with the following embodiment that will narrate, X, the Y planimetric coordinates that the input media that provided not only can the detecting operation body is provided in the technical progress that the present invention gives prominence to, can also the detecting operation body along the positional information of Z-direction, the equipment of using this input media can probe into depth information and warning message to operator's prompting operation body in view of the above, so that its attention avoids touching keyboard or display face.The touch inputting method of exempting from that is provided makes that to exempt from touch input operation practical, respond well.Owing to realized exempting from touch input operation, cross infection of disease and the propagation of having avoided the contact input to cause.Button, keyboard and touch-screen in use are not vulnerable to touch or push damage.Simultaneously, the image at touch point place can not be operated body yet and blocks on the display face.
Description of drawings
Fig. 1 is the front schematic view of the infrared touch panel of prior art;
Fig. 2 is the left surface synoptic diagram of the infrared touch panel of prior art;
Fig. 3 is that the detecting element array of the infrared touch panel of prior art is provided with synoptic diagram;
Fig. 4 is the synoptic diagram that is provided with that comprises the correlation detecting element array that increases newly and grating planar thereof;
Fig. 5 is the Changing Pattern synoptic diagram of the corresponding testing circuit detection signal of former X-ray grid with operating body Z coordinate;
Fig. 6 increases grating pair newly to answer the Changing Pattern synoptic diagram of testing circuit detection signal with operating body Z coordinate;
Fig. 7 is a kind of calculation process synoptic diagram of Z coordinate when increasing a correlation detecting element array newly;
Fig. 8 is the synoptic diagram that is provided with that comprises the reflective detecting element array that increases newly and grating planar thereof;
Fig. 9 is operating body width W, coordinate Y one timing, and the detection signal of the corresponding testing circuit of reflective infrared detection device array is with the Changing Pattern synoptic diagram of operating body Z coordinate;
Figure 10 is operating body coordinate Z, coordinate Y one timing, and the detection signal of the corresponding testing circuit of reflective infrared detection device array is with the Changing Pattern synoptic diagram of operating body width W;
Figure 11 is operating body width W, coordinate Z one timing, and the detection signal of the corresponding testing circuit of reflective infrared detection device array is with the Changing Pattern synoptic diagram of operating body Y coordinate;
Figure 12 is the Changing Pattern synoptic diagram of the detection signal of each receiving element in the corresponding X detecting element array with the X coordinate;
Figure 13 is the schematic flow sheet that calculates the Z coordinate according to the detection signal of the corresponding testing circuit of newly-increased reflective detecting element array;
Figure 14 is the left surface synoptic diagram that increases the input media that is provided with the integral structure support;
Figure 15 is a front schematic view of exempting from the touch type elevator keyboard;
Figure 16 is the left surface synoptic diagram of exempting from the touch type elevator keyboard;
Embodiment
Touch-free input device is an important component part of exempting from touch input device, at first narrates the specific embodiments of input media part in following embodiment 1,2,3,4 respectively.
Embodiment 1
Present embodiment is the best way that realizes touch-free input device technical scheme of the present invention.
The described touch-free input device of present embodiment comprises framework, telecommunication circuit, the X of correlation, Y detecting element array and corresponding with it testing circuit and calculation element.As shown in Figure 4, the lower left corner solid-line rectangle representative that is positioned at initial point O has former X, the Y grating planar of X detecting element array and Y detecting element array simultaneously.Here set up correlation detecting element array again, the formed new grating planar of this array is that the lower left corner is positioned at the dashed rectangle that Z1 is ordered on the Z axle among Fig. 4, i.e. the Z1 grating planar.The emission, the receiving element that increase array newly are separately positioned on the upper and lower both sides of dashed rectangle, the upper and lower both sides of associated frame members.The Z1 grating planar is arranged at after former X, the Y grating planar, and is parallel relative with former X, Y grating planar, and separates certain for Z1.Between two grating planars is the scope of activities of reserving for operating body in Z-direction apart from Z1, generally can be more than 10 millimeters, and the operation end of body moves in this scope under the normal operation, can reliably finish operations.The Z1 grating planar rear surface (Fig. 1 and Fig. 2 102) that yes is arranged in framework before.The design of frame aspect when it is installed on the display of computing machine, should make Z1 grating planar and display face leave sufficient distance, generally more than 10 millimeters, makes that operating body is easy to avoid touch with this panel.
Have the respective detection circuit that increases newly to be attached thereto to the detecting element array that increases newly, the detecting element array on former, new two grating planars can be independent together with its each self-detection circuit, also can cooperatively interact and detect.The detection signal of above-mentioned testing circuit output is delivered to a calculation element that increases newly through telecommunication circuit, in order to the positional information of calculating operation body along Z-direction.Adopt following detection, the evaluation work mode of present embodiment, at first will utilize detecting element, testing circuit and the calculation element detection computations of former X, Y grating planar to go out the current X of operating body, Y coordinate, this belongs to prior art.
The working method of the detection of present embodiment, calculating Z shaft position information has multiple, such as:
Mode 1, operating body place Z coordinates regional detect.Detecting element array on former, new two grating planars carries out testing separately together with its each self-detection circuit, according to its detection signal of exporting separately, the calculation element that increases newly is judged that each grating light has or not and is blocked (according to the size of detection signal, determine 0,1 state), determine which in three Z coordinates regionals being divided the operation embodiment be in:
Zone A: former, new two grating planars all are not blocked, and the description operation body also is in former X, the Y grating planar does not enter outward, and this zone comprises the Z coordinate figure that all are negative.
Area B: former, new two grating planars are respectively to be blocked and not to be blocked, and the description operation body has entered former X, Y grating planar, also do not enter newly-installed Z1 grating planar, and this zone Z coordinate figure scope is 0≤Z＜Z1.
Zone C: former, new two grating planars all are blocked, and the description operation body has entered newly-installed Z1 grating planar, this zone Z coordinate comprise all 〉=possible values of Z1.
Mode 2, operating body Z coordinate values detect.Detecting element array on former, new two grating planars carries out testing separately together with its each self-detection circuit, and according to its detection signal of exporting separately, the calculation element that increases newly calculates the operating body Z coordinate values in the measurable process.
Because the infrared ray grating has thickness, the detection signal of testing circuit changes continuously with the degree of depth that probes into of operating body within the specific limits, can be according to the Z coordinate of this change calculations operating body.
Figure 5 shows that a radiated element in the former X-ray grid is luminous, when operating body was arranged near the light of the receiving element relative with blocking its directive, the detection signal Uxd that the corresponding testing circuit of this receiving element is exported was with the Changing Pattern synoptic diagram of operating body Z coordinate.Figure 6 shows that a radiated element in the newly-installed Z1 grating is luminous, when operating body was arranged near the light of the receiving element relative with blocking its directive, the detection signal Und that the corresponding testing circuit of this receiving element is exported was with the Changing Pattern synoptic diagram of operating body Z coordinate.In the above-mentioned newly-installed Z1 grating in luminous radiated element and the former X-ray grid luminous radiated element be in identical X coordinate, so the Changing Pattern of Und is similar with Uxd, but on Z-direction translation Z1, i.e. Znm-Zxm=ZnM-ZxM=Z1.
As can be seen from Fig. 5, along with the approaching of operating body also goed deep into gradually, its Z coordinate figure increases gradually, the light that blocks is more and more, and detection signal Uxd descends gradually from the maximal value of original Zxm, reaches the minimum value at ZxM place at last, the sensitizing range that an approximately linear is arranged in the middle of Zxm～ZxM, can be in this sensitizing range with the variation relation of the relative Z coordinate of Uxd with the straight line match, i.e. linearization utilizes Uxd to come the Z coordinate of calculating operation body.Each data point among Fig. 5 and Fig. 6 can record according to experiment, except carrying out linear fit, also can be in this sensitizing range with the variation relation of the relative Z coordinate of Uxd with secondary or cubic curve match.
In like manner, can utilize Und to come the Z coordinate of calculating operation body in Znm～ZnM section.
As long as former, new two grating space Z1 are not more than ZxM-Zxm, the use that can be continued mutually in the sensitizing range of two gratings makes total range of operating body Z coordinate reach Zxm～ZnM.According to the above, under the situation that detects operating body X, Y coordinate, can be to a kind of concrete detection computations mode of operating body Z coordinate values for shown in Figure 7.
How to measure a series of data points of the relative operating body Z of Uxd, Und changes in coordinates by experiment, delimit its minimum value and maximum range, and with the variation relation linearization in its signal sensitizing range or use curve fitting, these all are prior aries, therefore repeat no more.
The detection signal of the corresponding testing circuit output of Y detecting element array can only use among X, the Y with the Changing Pattern of operating body Z coordinate and the basically identical of X-ray grid in the practical application, also X, Y detection signal can be united use.
The radiated element of mode 3, former X, Y coordinate detecting element array is luminous, and the receiving element of the detecting element array that increases newly receives; The radiated element of the detecting element array that perhaps increases newly is luminous, and the receiving element of former X, Y coordinate detecting element array receives.More than two kinds of emissions, receive modes can be created in oblique fire crossed grating on the Z-direction, similar in the relation curve of detection signal and Z coordinate and the mode 2, but can be at different X, Y coordinate points along slightly translation and distortion on the Z-direction, utilize the Z coordinate of its detecting operation body can compensating mode 2 in the immunity region of curve and non-linear.Except intersecting, similar in its concrete detection computations mode and the mode 2, also can carry out with reference to similar detection computations mode in the United States Patent (USP) " Apparatus and method toimprove resolution of infrared touch systems " (US 6429857) simultaneously, therefore no longer describe in detail X, Y coordinate.
Can only increase a new detecting element array, also can increase several new detecting element arrays simultaneously.The detecting element array that increases newly can be arranged on the new grating planar, also can be arranged on a plurality of new grating planars.
Embodiment 2
The described touch-free input device of present embodiment comprises framework, telecommunication circuit, the X of correlation, Y detecting element array and corresponding with it testing circuit and calculation element.As shown in Figure 8, the lower left corner solid-line rectangle representative that is positioned at initial point O has former X, the Y grating planar of X coordinate detecting element array and Y coordinate detecting element array simultaneously.Here set up reflective detecting element array again, the formed new grating planar of this array is that the lower left corner is positioned at the dashed rectangle that Z2 is ordered on the Z axle among Fig. 8, i.e. Z2 grating planar, and the detecting element that increases array newly all is arranged on the bottom of dashed rectangle.The Z1 grating planar is identical among the setting principle of Z2 grating planar position and the embodiment 1.
Newly-installed reflection type infrared detecting element array also is made up of fired infra-red component and receiving element, but transmit and receive the element space and arrange, be arranged on the same inner side edge of framework, as shown in Figure 8, O1 wherein, O3, O5 are radiated elements, and O2, O4 are receiving elements.The light beam axis that transmits and receives element is all in newly-increased Z2 grating planar, and is and parallel with Y-axis.And in fact, the light that radiated element sends is to be a taper shape on summit with the element, receiving element sensitive light also be in of this sort conical scope, the arrow line that makes progress among Fig. 8 representative emission light, downward representative reflection ray, 801 represent operating body.
To the reflective detecting element array that increases newly, there is the respective detection circuit that increases newly to be attached thereto.As aforementioned correlation grating respective detection circuit, the testing circuit that increases newly also is that to drive each radiated element one by one luminous for order, different is all detects the output signal of the receiving element adjacent with light-emitting component at every turn, similar with correlation then in others.The detection signal that increases testing circuit output newly is delivered to a calculation element that increases newly through telecommunication circuit, in order to the positional information of calculating operation body along Z-direction.
Because emission, receiving element have light emission, the receiving area of taper, so reflection type infrared receiving element can be in bigger spatial dimension enteroception Infrared, but detection signal is subjected to the operating body width, the influence of the distance of operating body and emission, receiving element is also bigger, and only the Z coordinate with reflected signal detecting operation body may have than mistake.
Referring to Fig. 8, when radiated element O3 independent when luminous, the output signal of the receiving element O2 that detection is adjacent, the detection signal Urd of its corresponding testing circuit and the Z coordinate of operating body, operating body width W, the distance of operating body and emission, receiving element are relation curve such as Fig. 9, Figure 10 and shown in Figure 11 of its Y coordinate.
The width W that curve representation among Fig. 9 is worked as operating body is certain, one timing of Y coordinate, and detection signal Urd begins from the minimum value of Zrm, along with operating body deeply is that the Z coordinate increases, reflective area is increasing, and Urd is also increasing, the maximal value that reaches capacity up to ZrM point Urd.
Curve representation among Figure 10 when the Z coordinate of operating body certain, Y coordinate one regularly, the operating body width W increases since 0, detection signal Urd begins more and more stronger from minimum value, the Urd maximal value that reaches capacity when width is WM.
The Z coordinate of the curve representation operating body among Figure 11 is certain, width W is certain, when the Y coordinate was 0, reflected light was the strongest, and detection signal Urd is a certain higher value, along with operating body is raised, its Y coordinate is increasing, and the light that reflexes to O2 is fewer and feweri, and Urd is more and more littler for detection signal, reach the YM point that framework limits up to the Y coordinate, detection signal Urd reaches the minimum value in the operating body Y coordinate scope of activities.
Therefore, the detection signal Urd of corresponding receiving element O2 is the function of Z coordinate, width W, Y coordinate, and (Y), wherein the f representative function concerns for Z, W can be expressed as Urd=f.The X coordinate of operating body not simultaneously, the detection signal Urd of corresponding receiving element O2 also can change because always detect the output signal of the receiving element adjacent with light-emitting component, the relative receiving element of operating body just can be ignored in the influence of variation aspect the X coordinate.
Can record by former Y grating detection component, testing circuit and its calculation element the Y coordinate figure, belong to prior art.To the operating body width W, can utilize the detection signal of former X-ray grid respective detection circuit output, obtain as calculated by the calculation element that increases newly.Figure 12 has expressed operating body and has blocked, and a radiated element is luminous in the X coordinate detecting element array, the variation tendency of its each receiving element respective detection circuit output detection signal Ux (N).Here some discrete point XN on the corresponding X-axis of the X coordinate of each receiving element, ordinate Ux (N) represents the amplitude of each detection signal.For convenience of calculation, each the discrete coordinates point among Figure 12 is connected with curve fitting.
When not having operating body to block, it is the massif shape at center that Ux (N) should form with light-emitting component X coordinate.Because blocking of operating body, it is the pit at center that Ux among Figure 12 (N) occurs with operating body X coordinate, and the A/F of pit is Δ X.Can go out the operating body width W by the linear relationship approximate treatment according to Δ X, W=w (Δ X+crx).Wherein w is a scale-up factor, and crx is a constant, and the both can measure Ux (N) data of many groups when having operating body to block through experiment, obtains as calculated after the match respectively with curve.
In the scope of sensitizing range, the Z coordinate of operating body can be calculated as follows:
Z coordinate=Z (Urd, W, Y)
＝Kr·[(Urd-Urd(Zrm))(Y+cry)/W]+Zrm
In the following formula, Z representative function relation, Kr is a sensitivity coefficient, and Urd is in the minimum value at Zrm place in Urd (Zrm) corresponding diagram 9, and cry is a constant, (Y+cry)/effect of W is to eliminate operating body width W and the influence of height Y coordinate to the Z coordinate Calculation to a certain extent.To Kr, Urd (Zrm), cry and Zrm, can make up the Urd data that measure under a plurality of Z coordinates of operating body, a plurality of width W and a plurality of Y coordinate situation by experiment, after fitting to many curves respectively, calculate acquisition through set up and solving an equation etc., these all are prior aries, therefore repeat no more.
Under the situation that detects operating body X, Y coordinate, as shown in figure 13 according to the flow process of detection signal Urd calculating operation body Z coordinate.How to utilize former X, Y grating detecting operation body Z coordinate to increase detection range and precision simultaneously, can copy embodiment 1 to finish, repeat no more here the Z coordinate.
To newly-increased reflection grating plane, can reflective emission also can be set at each side of framework, receive the detecting element array at a side of framework.Only increase is provided with a new grating planar, also can increase a plurality of new grating planars are set.Z2 can be on the occasion of, also can be negative value.
Embodiment 3
In embodiment 2, reflective infrared detection device array is set forms new grating planar, in order to the Z coordinate of detecting operation body.If infrared emission component among the embodiment 2 and infrared receiver component are replaced with ultrasonic emitting element and ultrasound wave receiving element, are formed the acoustic grating plane, and, promptly become the technical scheme of present embodiment with the also corresponding replacement of testing circuit.
The ultrasonic reflections formula detects principle and characteristic to ultrared extremely similar, substitute infrared components with ultrasonic element, corresponding detection signals also is the function of operating body Z coordinate, width W, height Y coordinate simultaneously, its characteristic is to similar described in the embodiment 2, therefore according to ultrasonic signal detection computations Z coordinate, others all with embodiment 2 in identical about infrared components, repeat no more here.
Embodiment 4
Present embodiment is the technical scheme about touch-free input device framework design of the present invention.To leave the display device panel enough far away for the grating planar that makes aforementioned X, Y grating planar and increase setting newly, be easy to make operating body to avoid touching the display device panel, set up support specially for framework, this support and framework are discrete or integral structure, and support between this between the two when framework and display device were installed together.
As shown in figure 14, increase support 107 is set, this support or be separate structure is installed together use with frame combination, perhaps is shown in Figure 14 making like that and the incorporate structure of framework.Support 107 should have enough width, makes the grating planar of newly establishing on the framework leave display device panel enough (generally more than 10 millimeters) far away, allows operating body be easy to avoid touching the panel of display device.Support 107 can be arranged on the angle or limit of framework, also can be provided with around one week of framework, becomes the ring texture of continual rectangle or other shape, and this makes frame thickness appear to have bigger increase.
Following embodiment is an overall technical architecture of exempting from touch input device and method about of the present invention.
Embodiment 5
With master control set, display device, the touch-free input device described in suggestion device and the embodiment 1,2,3,4 combines, and promptly constitutes the various of present embodiment and exempts to touch the input display device, so no longer repeat the input media part.
The function of master control set mainly is that the touch event that the reception input media transmits (is that operating body enters X, Y grating planar, in fact do not touch any entity), testing result information such as operating body X, Y planimetric coordinates and Z coordinate, the content and the information such as demonstration, prompting mode that will show, point out to display device and suggestion device output.Master control set can be a separate processor, if touch-free input device of the present invention and graphoscope are used together, the work of described master control set is generally born by main frame.In other application scenario, the work of master control set can be born by the processor of touch-free input device is all or part of, or is partly born by other related with it processor.
Display device can have multiple, comprises graphoscope, signal lamp, character or graphic presentation lamp or display tube, display board, display screen, projection screen etc.In order to enrich the function of described input display device, the labelling apparatus of having scribed, printed character or pattern can also be set again, be placed on the front of described display device or be integrated with described display device.
Display device can be used to show character or various indicative figures such as the various numerals that cooperate input media work, literal, symbol.In the general use, touch-free input device framework of the present invention can be installed or is arranged on the display device, promptly display device is positioned at the back or the rear portion of touch-free input device framework, and the window that surrounds by framework shows various contents to the operator.The framework of display device can be integrated with the framework of touch-free input device.
Suggestion device can be a kind of in the aforementioned display, can be independently signal lamp, display board or display screen etc., also can be integrated with aforementioned display, in order to show character or various indicative figures such as various numerals, literal, symbol.In order to enrich the function of described suggestion device, the labelling apparatus of having scribed, printed character or pattern can also be set again, be placed on the front of described suggestion device or be integrated with described suggestion device.If suggestion device is independently, its installation site and mode are any, observe as long as be convenient to the operator.
Suggestion device can also be sound-producing devices such as hummer, ring or loudspeaker.The function of suggestion device and display device also can be mixed setting mutually.
Suggestion device is mainly used to show or the Z coordinate or the place Z coordinate range of prompting operation body can have following function: inform in the scope of the normal operating space of operating body and use operation; When operating body enters the Z coordinate range that touches the display device panel easily, send caution to the operator, touch or touch avoiding.
Concrete application technology scheme 1 with the touch-free input device image pattern 1 described in the embodiment 1,2,3,4 and shown in Figure 14, is installed on the display of computing machine, and this display is used as display device and suggestion device simultaneously.Be provided with on the indicator screen operating body probe into depth cue district: A, when operating body is outside X, Y grating planar, highlight shows shallow white, and the prompting similar literal such as " please use "; B, when operating body enters X, Y grating planar and can normal running uses input media, highlight shows green, and prompting similar literal such as " operation are normal "; C, when operating body penetrates X, the Y grating planar is far away excessively, when the range display panel was nearer, highlight showed yellow, and prompting similar literal such as " attention are kept at a distance "; D, when operating body range display panel very proximal pole easily touches, highlight shows red, and prompting similar literal such as " carefully touching panel ".During the display reminding foregoing, can also give sound or voice suggestion simultaneously.
Above-mentioned information is not limited to this change in color that " probes into the depth cue district ", can also be figure and shape, pattern and style thereof, the field color of demonstration or the generation and the various variation pattern thereof of brightness itself that shows.
Concrete application technology scheme 2, this is an application example of exempting from the touch type elevator keyboard, as Figure 15 and shown in Figure 16, the 108th, the framework of input media, the 151st, keyboard panel or panel are printed with solid line on it or portrayal has button picture frame 152.Each button picture frame is represented a key position respectively, wherein indicates the function of each key, and as floor number numeral " 1,1,2,,, 12 ", the control of ladder door " is opened ", " passs ", fault calling " calling on urgently ".Circuit board 153 is arranged on the back of panel 151, and it is provided with light yellow key-position signal lamp 154, one of each button picture frame relative set of such signal lamp.Among Figure 16,, can only see first row, promptly be positioned at and indicated the signal lamp of the picture frame position of " 1,3,6,9,12, call on urgently " because the signal lamp of back is blocked.All numerals, character area or its stroke partly are transparent on the panel, can appear the light of signal lamp, so that the operator sees this numeral or literal clearly, and see the information with the intensity of light representative clearly.Dashed rectangle is not the button picture frame, and this boxed area also is transparent, indicates literal in it and " does not touch! ", do not want the touch keyboard panel in order to prompting operation person specially, the warning light of its back is red.Signal lamp and correspondence on each key position " are not touched! " brightness of signal lamp of highlight all can distinguish under the control of master control set separately and change.
Along Z-direction, near the frame window and inside is divided into several districts:
(1) outside from front surface 101 beginnings of framework, promptly from the outside Zone Full in this surface, be defined as non-control district.In this zone, input media can only detect operating body and not enter X, Y grating planar.
(2) front surface 101 from framework begins inside 30 millimeters, is defined as the operational zone.In this zone, input media can normally detect all coordinate informations of operating body and the variation of coordinate.
(3) from the front surface of framework 101 inside 30～40 millimeters, be defined as the caution district.Operating body enters this zone and means and probeed into deeply, touches key panel easily.
(4) from the front surface of framework 101 inside 40～50 millimeters, be defined as zone of alarm.Operating body enters this zone and means that horse back will touch key panel.
Here as can be seen, in the above-mentioned concrete application technology scheme 1 between four kinds of operating body locations that situation marked off of A～D, four intervals that marked off with (1)～(4) in the concrete application technology scheme 2 be the class Sihe one to one, wherein also can cancel need not the corresponding caution district in C and (3).
To the power of signal light, also be defined as low-light, the low light level, ordinary light, four brightness degrees of high light from weak to strong.
The course of work of this elevator keyboard is as follows:
1) operating body is when non-control district, and all key-position signal lamps only glimmer, and red eye is not luminous.
2) enter the operational zone from non-control district when operating body, promptly be transfused to device and detect.In this zone, which key position operating body points on, master control set is about to its corresponding X, the Y planimetric coordinates is scaled key coding, and control sends the low light level with this key position key bits corresponding signal lamp, shows to identify selected this key position of operating body and preparation to its operation.If operating body is shifted to other key position from this position, or get back to non-control district and stop the long period, such as 3 seconds, think then and cancelled selection that the signal lamp of corresponding this key position recovers low-light this key position.
3) if operating body is made the action of a click on selected key position, the change procedure of corresponding Z coordinate is detected, master control set is promptly thought in view of the above and has been pressed this key, controls the key bits corresponding signal lamp then and sends ordinary light, up to later it being reverted to the state that glimmers.
4) if operating body is inwardly deeply far away, entered the caution district, then master control set is controlled each key-position signal lamp and warning light sends ordinary light together, and the caution operator should note the operating body of dropping back, and avoids touching key panel.After operating body left caution district, each key-position signal lamp and warning light returned to aforementioned 1), 2), 3) state of process stage defined, input media continues by 1), 2), 3) described rule detects.
5) then master control set is controlled each key-position signal lamp and correspondence " is not touched if operating body too inwardly deeply, has entered zone of alarm! " the red alarm signal lamp of prompting sends high light, the caution operator operating body of should dropping back immediately together.After operating body left zone of alarm, each signal lamp returned to aforementioned 1), 2), 3), 4) state of process stage defined, input media continues by 1), 2), 3), 4) described rule detects.
In above-mentioned concrete application technology scheme 1 and the concrete application technology scheme 2, all be to handle the operating body positional information that touch-free input device transmits by master control set, and control suggestion device according to result and send various informations, comprise when operating body enters the zone of alarm of D and (4) correspondence, its attention of warning of sending similar " highlight show red " and " each key-position signal lamp～red alarm signal lamp sends high light together " to the operator avoids touching the warning message of the visual or audible of display device panel, and after operating body leaves zone of alarm, cancel this warning message.
Master control set is handled the operating body positional information that touch-free input device transmits, and comprises two kinds of main processing modes.The one, its coordinate and one or more set-point along the Z axle is subtracted each other, export corresponding one or more continually varying control information according to each subtraction result.Such as with the interfacial Z coordinate figure between the Z coordinate figure of display device panel and above-mentioned zone of alarm, caution district, operational zone and each district, non-control district respectively as different set-points, subtract each continually varying difference represent that promptly operating body has entered which district and the relative position in this district.Can control display device or suggestion device demonstration continually varying figure, pattern, color or monochrome information according to The above results information master control set, these continually varying display message schematic operation bodies have entered which district and the relative position in this district, such as the distance that demonstrates with finger finger tip or certain bar front end with above-mentioned certain interphase or panel.At this moment master control set should comprise subtraction device that can carry out above-mentioned subtraction and the setter that can preset or regulate the set-point signal.Subtraction device can be the subtracter of analog or digital formula, also can be that equivalence is a section or several sections subtraction programs of subtracter.Similarly, above-mentioned setter can be the hardware of analog or digital formula or number storage, digital setting program.
The another kind of processing mode of master control set is the comparison operation that above-mentioned subtraction is become output 0,1 diadic information, above-mentioned subtraction device correspondingly becomes the comparison operation device, the set-point that setter preset or set can be described as threshold values at this moment, master control set shows the apparent in view different information of difference according to comparative result control display device or suggestion device, such as the significant change of figure, pattern, color or brightness.Such display message is used for the schematic operation body and has entered which district, and operating body is current to be in certain district such as demonstrating with finger finger tip or certain bar front end.At this moment master control set should comprise the comparison operation device that can carry out above-mentioned comparison operation, and is used identical in included setter and the aforementioned processing mode.The comparison operation device can be the comparer of analog or digital formula, also can be that equivalence is a section or several sections comparison program of comparer.
If the operating body that aforementioned touch-free input device transmits is not continuous numerical value along the positional information of Z axle, do not enter 0,1 such diadic signal of a certain grating but have, then above-mentioned subtraction device or comparison operation device and setter also should be 0,1 corresponding diadic digital circuit or programs.
Once mentioned in the above-mentioned concrete application technology scheme 2, operating body is in non-control district the time, and all key-position signal lamps only glimmer, and without any variation, can think that these signal lamps are to be in a kind of initial mode of operation.When operating body when non-control district enters the operational zone, which key position operating body points on, send the low light level with this key position key bits corresponding signal lamp, if operating body is shifted to other key position from this position, or get back to the non-control district stop long period, then think and cancelled selection to this key position, the signal lamp of corresponding this key position recovers low-light, and this moment, these signal lamps were to be in a kind of new mode of operation.
Embodiment 6
As everyone knows, when promoting a Genius mouse and all around moving, the cursor on the graphoscope can movement therewith, and this is the spin or the electrooptical device of Genius mouse, and promptly indicator sends before and after the control cursor and the pulse signal of side-to-side movement.To the Genius mouse that a right hand uses, we know its left button click and the common function that has of right button click.
X in the aforementioned touch-free input device, Y grating promptly play the effect of above-mentioned indicator.On the basis of previous embodiment, with increasing between X, Y grating and Z1 grating or the Z2 grating in the previous embodiment 1,2,3 a new grating is set, new grating is apart from 20 millimeters on Z1 grating or Z2 grating, and X, Y grating are apart from 10 millimeters on new grating.Relative set its new testing circuit and calculation element.When operating body entered new grating and is detected, master control set was promptly equally carried out work such as corresponding various calculation process according to the left button click of having pressed Genius mouse; When having second finger to enter X, Y grating subsequently, be used as the right button click of having pressed Genius mouse and equally carry out work such as corresponding various calculation process.Like this, touch-free input device of the present invention and exempt from touch input device and have with Genius mouse and use the equipment identical functions and the operator scheme of Genius mouse.
The scheme that new grating is set with above-mentioned increase is corresponding, the aforesaid operations district can also be divided into the selection district from big to small again and carry out the district according to the distance that operating body leaves the display device panel, one section interval is corresponding near selecting district and former X, Y grating planar, and it is corresponding with near the one section interval of newly-increased grating planar to carry out the district.When operating body entered the selection district by non-control district, master control set was promptly equally carried out work such as corresponding various calculation process according to the indicator that has promoted Genius mouse, and the mode of operation of display device transfers first mode of operation to from initial operation mode; In the time of in operating body enters the execution district then, master control set is promptly equally carried out work such as corresponding various calculation process according to the left button click of having pressed Genius mouse, and the mode of operation of display device transfers second mode of operation to from first mode of operation; When having second finger to enter the selection district subsequently, to be used as the right button click of having pressed Genius mouse and equally to carry out work such as corresponding various calculation process, the mode of operation of display device transfers the 3rd mode of operation to from second mode of operation.
The tactile keyboard of exempting from of similar present embodiment can also use as the keyboard of shared devices such as ATM (Automatic Teller Machine), vending machine, banking system.
More than describe the present invention by embodiment, but the present invention is not limited thereto, and is all in improvement or the replacement done without prejudice to spirit of the present invention and content, should be regarded as belonging to protection scope of the present invention.
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Claims (15)
1, a kind of touch input device of exempting from comprises: display device, the infrared detection device array of detecting operation body X coordinate or Y coordinate and corresponding with it first testing circuit and first calculation element, it is characterized in that also comprising: parallel with described infrared detection device array and separate the second detecting element array and corresponding second testing circuit of certain distance, and utilize second calculation element of the output information calculating operation body of above-mentioned second testing circuit along the Z-direction positional information, the master control set that above-mentioned positional information is handled, and the suggestion device of avoiding the warning message of touch display unit panel according to the alert operator that master control set output information is sent visual or audible.
2, a kind of touch input device of exempting from as claimed in claim 1 is characterized in that the described second detecting element array is the infrared detection device array of correlation, reflective infrared detection device array or ultrasound examination element arrays.
3, a kind of touch input device of exempting from as claimed in claim 1, it is characterized in that described master control set comprises comparison operation device or subtraction device, setter, the output signal of described second calculation element of input termination of above-mentioned comparison operation device or subtraction device, the set-point signal of another input termination setter, the output signal of comparison operation device or subtraction device is in order to the control suggestion device.
4, a kind of touch input device of exempting from as claimed in claim 3, the set-point signal that it is characterized in that described setter output is more than or equal to 10 mm distance apart from described display device panel.
5, a kind of touch input device of exempting from as claimed in claim 1 is characterized in that the distance between described second detecting element array and the described display device panel is more than or equal to 10 millimeters.
6, a kind of touch input device of exempting from as claimed in claim 5, it is characterized in that at least one detecting element array that between the infrared detection device array and the second detecting element array, be arranged in parallel, and testing circuit correspondingly is set and the calculation element of information is provided for master control set.
7, a kind of touch input device of exempting from as claimed in claim 3, it is characterized in that described master control set also comprises the output signal of utilizing second calculation element, control the control device of described suggestion device with the variation pattern display operation body position information of figure, pattern, color or brightness.
8, a kind of touch input device of exempting from as claimed in claim 1 is characterized in that described display device or suggestion device are graphoscope, signal lamp, character or graphic presentation lamp or display tube, display board, display screen or projection screen.
9, a kind of touch inputting method of exempting from comprises:
A, the distance that the display device panel external space is left described panel according to operating body are divided into the step of non-control district, operational zone and zone of alarm from big to small at least;
B, in the operational zone, receive to handle the step of the various input operations that operating body carried out;
C, when operating body enters zone of alarm by the operational zone, avoid touching the step of the visual of display device panel or audible warning message to operator's its attention that gives a warning;
D, after operating body leaves zone of alarm, cancel the step of this warning message.
10, a kind of touch inputting method of exempting from as claimed in claim 9 is characterized in that: between described operational zone and zone of alarm, increase the step that marks off a caution district; When operating body enters zone of alarm or caution district, send the step of different warning messages respectively to the operator.
11, as claim 9 or 10 described a kind of touch inputting methods of exempting from, it is characterized in that the variation pattern with figure, pattern, color or brightness, the display operation body leaves the distance in display device panel or outer described certain district of this panel.
12, a kind of touch inputting method of exempting from as claimed in claim 10, the interval width that it is characterized in that described security area or zone of alarm is more than or equal to 10 millimeters.
13,, it is characterized in that described warning message is the generation or the variation of figure, pattern, color, brightness or sound as claim 9 or 10 described a kind of touch inputting methods of exempting from.
14, as claim 9 or 10 described a kind of touch inputting methods of exempting from, it is characterized in that the mode of operation of display device transfers another mode of operation to from initial operation mode when operating body enters the operational zone by non-control district.
15, as claim 9 or 10 described a kind of touch inputting methods of exempting from, it is characterized in that described operational zone is divided into the selection district from big to small again and carries out the district according to described distance, when operating body entered the selection district by non-control district, the mode of operation of display device transferred first mode of operation to from initial operation mode; In the time of in operating body enters the execution district then, the mode of operation of display device transfers second mode of operation to from first mode of operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03178377 CN1573666A (en) | 2003-06-20 | 2003-07-08 | Touch-free input equipment and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN03126964.8 | 2003-06-20 | ||
| CN03126964 | 2003-06-20 | ||
| CN 03178377 CN1573666A (en) | 2003-06-20 | 2003-07-08 | Touch-free input equipment and method |
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| CN1573666A true CN1573666A (en) | 2005-02-02 |
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| CN 03178377 Pending CN1573666A (en) | 2003-06-20 | 2003-07-08 | Touch-free input equipment and method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100437451C (en) * | 2004-06-29 | 2008-11-26 | 皇家飞利浦电子股份有限公司 | Method and device for preventing staining of a display device |
| CN102023784A (en) * | 2009-09-16 | 2011-04-20 | 创新科技有限公司 | Method and equipment for inputting characters in non-contact mode |
| CN103294219A (en) * | 2012-02-28 | 2013-09-11 | 联想(北京)有限公司 | Character input method and device |
| CN104401826A (en) * | 2014-11-18 | 2015-03-11 | 森赫电梯股份有限公司 | Intelligent touch type elevator hall caller |
| CN107167793A (en) * | 2017-06-16 | 2017-09-15 | 南京泰杰赛智能科技有限公司 | A kind of alignment system based on laser correlative detector array |
-
2003
- 2003-07-08 CN CN 03178377 patent/CN1573666A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100437451C (en) * | 2004-06-29 | 2008-11-26 | 皇家飞利浦电子股份有限公司 | Method and device for preventing staining of a display device |
| CN102023784A (en) * | 2009-09-16 | 2011-04-20 | 创新科技有限公司 | Method and equipment for inputting characters in non-contact mode |
| CN103294219A (en) * | 2012-02-28 | 2013-09-11 | 联想(北京)有限公司 | Character input method and device |
| CN104401826A (en) * | 2014-11-18 | 2015-03-11 | 森赫电梯股份有限公司 | Intelligent touch type elevator hall caller |
| CN107167793A (en) * | 2017-06-16 | 2017-09-15 | 南京泰杰赛智能科技有限公司 | A kind of alignment system based on laser correlative detector array |
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