CN1570814A - Infrared touch-free input device with lenses and equipment applying same - Google Patents
Infrared touch-free input device with lenses and equipment applying same Download PDFInfo
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- CN1570814A CN1570814A CN 03139943 CN03139943A CN1570814A CN 1570814 A CN1570814 A CN 1570814A CN 03139943 CN03139943 CN 03139943 CN 03139943 A CN03139943 A CN 03139943A CN 1570814 A CN1570814 A CN 1570814A
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Abstract
It is an infrared non-touch input apparatus with the lens and the equipment that applies this apparatus. The said input apparatus comprises: the first detecting elements array that can detect the X coordinate or Y coordinate of object; the corresponding the first detecting circuit and the first calculation apparatus; the second detecting elements array that parallels the first detecting elements array and has certain distance; the second detecting circuit; the lens array that on the optical path of the second detecting elements array, used for increasing the thickness of the second detecting grating; the second calculation apparatus that can calculate the Z axis orientation and location information of object by the exported information of the second detecting circuit. The equipment that can apply this infrared non-touch input apparatus also comprises: display apparatus; master control apparatus that can process the location information; the hint apparatus that can give off visible or voiced alarm information according to the exported information of master control apparatus to alarm operator avoid touch the screen of display apparatus.
Description
Technical field
The present invention relates to a kind of with lens the infrared type touch-free input device and use the equipment of this device.
Background technology
To being installed in some equipment of public place, use the operator numerous, flow of personnel is big.Cross-infection and propagation for fear of some communicate illness 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.
Concerning infrared touch panel, 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.
Although there is above-mentioned shortcoming, infrared touch panel adopts the correlation detection technique, and is comparatively accurate to the detection and location of operating body coordinate, therefore more is hopeful to be modified into the touch-free input device that is applicable to many key boards or general computer display.
Know in the industry, 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 is that testing circuit and calculation element all are arranged in the framework mostly, 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.
The structure of infrared touch panel and installation are generally as depicted in figs. 1 and 2, the 108th, the touch-screen framework, the 101st, the front surface of framework, the infrared emission component array 111 of detecting operation body horizontal coordinate position is relative respectively with receiving element array 111 ' to be installed on the lower and upper frame of framework 108, forms vertical wire grating during work in frame window.The infrared emission component array 112 of the vertical coordinate position of detecting operation body is relative respectively with receiving element array 112 ' to be installed on the left side and left frame of framework 108, forms horizontal wire grating during work in frame window.Infrared emission component array and corresponding receiving element array can be collectively referred to as the detecting element array, and vertical and level two wire gratings can be collectively referred to as plane grating.The 109th, graphoscope, the framework of touch-screen are installed on its front housing, and 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) " Infrared light beam X-Y positionencoder for display devices " of authorizing in 1973 (US3775560) and " Coordinate detection system " (US3764813) disclosed most of prior art, follow-up patent has proposed some improvement projects in succession, its principle of work can be referring to the United States Patent (USP) " Apparatus and method to improve resolution of infrared touch systems " of authorizing in 2002 (US6429857), in the Chinese patent of application in 2000 " structure and the method for raising infrared touch screen performance " (00121462.4), disclosed a kind of relevant divided method.
Because the infrared touch panel of prior art only is provided with plane grating, therefore can only the detecting operation body whether enter in this grating planar and determined the planimetric coordinates position of this operating body along the display face direction, and can't the detecting operation body pass the degree of depth that continues to probe into behind the plane grating and and the display device panel between distance.
To a touch-free input device, should make operating body when input operation, be easy to avoid touching for example panel of display device on the structural design, simultaneously should have the function of the range information that operating body and display device panel in time are provided, 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 more 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 pass the degree of depth that continues to probe into behind the plane grating and with the range information of display device panel, 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 planimetric coordinates position that cheaply can the detecting operation body to be provided, again can the detecting operation body pass the degree of depth that continues to probe into behind this grating planar and with the touch-free input device of the range information of display device panel, and then provide a kind of touch input device of exempting from of this input media of application, to the distance of operator's prompting operation body and display device panel, make the operator note avoiding touching keyboard or display face.
The present invention realizes the technical scheme of above-mentioned purpose:
A kind of infrared type touch-free input device with lens comprises: first detecting element 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 the described first detecting element array and separate the second detecting element array and corresponding second testing circuit of certain distance, place the second detecting element array light path, be used to increase by second and detect the lens arra of grating thickness, and utilize second calculation element of the output information calculating operation body of above-mentioned second testing circuit along the Z-direction positional information.
A kind of touch input device of exempting from comprises: display device, first detecting element 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 the described first detecting element array and separate the second detecting element array and corresponding second testing circuit of certain distance, place the second detecting element array light path, be used to increase the convex lens array of the second detection grating thickness, 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.
Adopt technique scheme, in conjunction with the following embodiment that will narrate, the planimetric coordinates that a kind of low-cost 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 and the distance of display device panel, 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.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 that the infrared touch panel of prior art is installed in the front schematic view on the display;
Fig. 2 is that the infrared touch panel of prior art is installed in the left surface synoptic diagram on the display;
Fig. 3 increases the input media that infrared components array and lens arra are set to be installed in front schematic view on the display;
Fig. 4 increases the input media that infrared components array and lens arra are set to be installed in left surface synoptic diagram on the display;
Fig. 5 increases the input media that infrared components array and lens arra are set to be installed in schematic top plan view on the display;
Fig. 6 is the synoptic diagram that Infrared is directly propagated between radiated element and receiving element;
Fig. 7 is framework and the newly-increased infrared components array that is provided with and the part front schematic view of lens arra;
Fig. 8 is framework and the newly-increased infrared components array that is provided with and the left surface synoptic diagram of lens arra;
Fig. 9 is the newly-increased infrared components array that is provided with and the schematic top plan view of lens arra;
Figure 10 is that operating body enters the newly-increased infrared components array that is provided with and the synoptic diagram of lens arra grating region;
Figure 11 is the Changing Pattern synoptic diagram of detection signal Uxd with operating body Z coordinate;
Figure 12 is the Changing Pattern synoptic diagram of detection signal Und with operating body Z coordinate;
Figure 13 is the synoptic diagram of a kind of flow process of detection computations operating body Z coordinate;
Figure 14 is a front schematic view of exempting from the touch type elevator keyboard;
Figure 15 is the left surface synoptic diagram of exempting from the touch type elevator keyboard;
Embodiment
Embodiment 1
Present embodiment is introduced the touch-free input device part of technical solution of the present invention in detail.
Image pattern 3, Fig. 4 and shown in Figure 5, framework thickening with former infrared touch panel, originally be used for the infrared emission component array 111,112 of detecting operation body plane coordinate and the front surface setting that receiving element array 111 ', 112 ' is still pressed close to framework, the plane grating of detecting operation body plane position just leaves one section distance L enough far away of display face like this
1The back of infrared emission component array 111 on framework, image pattern 4 and shown in Figure 5 is provided with an infrared emission component array 115 again.Correspondingly, in the back of receiving element array 111 ', an infrared receiver component array 115 ' is set again.Array 115 is parallel with former array 111, at a distance of Z
1Array 115 ' is parallel with former array 111 ', also at a distance of Z
1The radiated element number of array 115 is identical with the receiving element number of array 115 ', and each element of two arrays respectively relatively.Array 115,115 ' parts number can be identical with array 111,111 ' parts number, also can be different, and generally be the number that is less than the latter.
It is exactly to be provided with new grating (promptly be provided with second and detect grating) that increase is provided with infrared components array 115 and 115 ', after this grating is used for the detecting operation body and passes plane grating, the distance of display face is left in its end, and the thickness of this grating has determined the range ability that it can continuous detecting.
As Fig. 3, Fig. 4 and shown in Figure 5, above infrared emission component array 115, be provided with convex lens array 121, the convex lens in this lens arra are corresponding with the radiated element in the radiated element array respectively, and radiated element is positioned on the focus of its corresponding lens just.In the below of receiving element array 115 ', be provided with convex lens array 121 ', the convex lens in this lens arra are corresponding with the receiving element in the receiving element array respectively, and receiving element is positioned on the focus of its corresponding lens just.Do not comprise display among Fig. 7 and Fig. 8, express the relation that is provided with between each infrared components array, lens arra and the framework in more detail, and the whole process propagated through lens of the general shape of lens, light.The Infrared that a certain element sends in the array 115 was to be that the taper shape on summit is dispersed emission with this radiated element originally, behind lens corresponding in the convex lens array 121, become another corresponding lens in the convex lens array 121 ' of a branch of directional light 123 directives top, through these lens converge after on the infrared receiver component of cover correspondence in receiving element array 115 '.In other each element of this array, lens combination, light is also propagated in an identical manner.
As can see from Figure 6, if there are not convex lens, the corresponding receiving element that the infrared light that a certain element sends in the array 115 only has a very narrow parallel ray beam 120 to arrive in the receiving element array 115 ', the thickness of parallel rays can not surpass diameter or the thickness that transmits and receives element.Promptly adopt emission, the receiving element of 10 millimeters of Φ, the thickness maximum of this parallel beam only may be 10 millimeters, and the thickness of such second detection grating is too little, and the continuous detecting range can not satisfy the requirement of actual use.The setting of convex lens array makes second thickness that detects grating that bigger increase be arranged, and makes its continuous detecting range satisfy the actual requirement of using.
Lens arra can certainly be set, and only have the method for the echelette that transmits and receives element to strengthen the continuous detecting range more, but cost is higher relatively like that by which floor is set.
Fig. 9 has only drawn the part vertical view of receiving element array 115 ' and lens arra 121 ', lens arra 121 and radiated element array 115 below blocked by it, thereby can not see among the figure.Each convex lens in the array all are rectangles, and it is wide to be S, and S is each interelement distance in this element arrays just; Each convex lens is long is S ', has determined that by S ' second detects the thickness of grating, and promptly this array element operating body that can detect is near the continuous range of a segment distance of display face direction.The lens of above-mentioned rectangle are equivalent to radius among Fig. 9, and to be that the represented lens of dashed circle of r have excised four marginal portions formed, and the shape of two row lens is not always the case up and down.Lens certainly are circular, but can the gap occur between two lens like that, should be with the lens of rectangle.
After being provided with the convex lens array like this, second thickness that detects grating is increased, available continuous detecting Range Extension is S ', transmits and receives the continuous detecting range that element diameter limits greater than former cause.The cost of lens is relatively low, therefore lens arra is set is better than being provided with the scheme that multilayer detects grating with the scheme that increases the continuous detecting range.
For easy analysis, can regard the light intensity of each point in the rectangular lens zone as identical.Lens material can be chosen transparent optical material fully, also can choose the filter that only can see through Infrared.Each lens can discretely be arranged, or is bound up, with being made of one of lens arra structure.Lens arra also can be integrated with the infrared filtering device of plane grating.How according to surface curvature of focal length of convex lens and aperture design lens etc., this is the prior art of knowing in the industry, repeats no more.
Mix by Fig. 8 and can see at the size branch, in framework border, except original element arrays 111,111 ', 112,112 ' the width that should keep, all the other can be all occupied by lens arra, so among Fig. 4, Figure 10, Z
1=Z
2+ S '/2.In order to be easy to realize exempting from touch input operation, should make 10 millimeters of S ', lens are near the distance L between display side and display face
1-Z
2-S ' should be more than or equal to 10 millimeters.
For the convenience of narrating, as Fig. 3, Fig. 4 and the O-XYZ rectangular coordinate system of setting up shown in Figure 5, initial point O is set in plane grating place, the frame window lower left corner.As shown in Figure 10, the Z coordinate of operating body 000, i.e. the Z coordinate Z of its end
T=S
T+ Z
2
Correspondence increases each element in the infrared components array 115 and 115 ' of setting newly, and the relevant detection circuit is set simultaneously.
A certain element in radiated element array 111, such as No. second element 111.2 when luminous, if operating body 000 enters its grating region, blocked the light that the receiving element 111 ' .2 of the correspondence shown in Figure 10 can receive gradually, then the variation relation curve of the detection signal Uxd of this receiving element respective detection circuit output and operating body Z coordinate as shown in figure 11, Uxd is in maximal value at the Zxm point, is in minimum value at the ZxM point, and wherein Zxm～ZxM is about as much as the diameter of this receiving element.
A certain element in radiated element array 115, such as No. second element 115.2 when luminous, if operating body 000 has entered in the zone of parallel grating 123 as shown in Figure 8, and from left to right along the both sides of the lens that striden across receiving element 115 ' .2 correspondence on the X-direction, blocked the light that the receiving element 115 ' .2 of the correspondence shown in Figure 10 can receive gradually along the Z axle, then the variation relation curve of the detection signal Und of this receiving element respective detection circuit output and operating body Z coordinate as shown in figure 12, Und is in maximal value at the Znm point, is in minimum value at the ZnM point.Wherein O～Znm roughly is equivalent to the Z among Figure 10
2, Znm～ZnM is about as much as the long S ' of lens.
The corresponding calculated device is set, judges the position of calculating operation body along the Z axle, i.e. its Z coordinate according to the numerical value of detection signal Uxd and Und.
To plane grating, only need to confirm whether operating body enters fully, enters fully in the plane grating if Uxd, can know operating body near the minimum value among Figure 11, can carry out input operation reliably.
Among Figure 12, detection signal Und and the variation relation of operating body Z coordinate in Znm～ZnM section can be approximate by straight line, thereby can calculate the Z coordinate Z of operating body by the numerical value of Und
T, then according to L
1-Z
TConverse the distance of operating body apart from display face.
If the width W of operating body is less than the infrared components interval S, and only entered in the width range of lens of receiving element 115 ' .2 correspondence, do not cover the light in other lens range, then at first the variation delta Und of detection signal Und should be multiply by S/W and convert, according to the Z coordinate Z of Δ Und value equivalent after the conversion according to the relation curve calculating operation body of Figure 12
T
If operating body has covered and has only covered the light of two adjacent lenses simultaneously, then translation method is at first that the variable quantity of the corresponding detection signal of two adjacent reception elements is added together, multiply by the S/W conversion again is the variable quantity of the corresponding detection signal of a receiving element, according to the Z coordinate Z of Δ Und equivalent after the conversion according to the relation curve calculating operation body of Figure 12
T
Among Figure 11 and Figure 12, ZxM is less than Znm, and a bit of clear area that Z changes in coordinates information can not be provided appears in the centre.If this clear area is enough short,, generally can not influence the input operation effect such as less than 10 millimeters.Also can suitably choose each structured data, above-mentioned clear area is eliminated.According to the above, under the situation that detects operating body X, Y coordinate and width W, can be to a kind of concrete detection computations flow process of operating body Z coordinate values for shown in Figure 13.
In fact, the light intensity of each point can not be on all four in the above-mentioned rectangular lens zone, generally is that the center is big, and the place that keeps to the side is smaller, and this will cause the relation curve of the relative Z of Und among Figure 12 to have more severe nonlinear.Solution has three kinds, a kind of is to be provided with to have light shield layer or the anti-dazzling screen that different transparencies distribute on lens, perhaps in light path, increase separately to be provided with and have the anti-dazzling screen that different transparencies distribute, the light intensity at lens center place is suitably weakened, to reach in the rectangular lens zone light intensity approximately equal everywhere.Another kind of measure is with secondary or cubic curve the relation curve among Figure 12 to be carried out match, calculates the Z coordinate according to matched curve by Und in the calculating afterwards.The third is that Und and the Z coordinate relation data group that will record by experiment store, and calls these group data at any time and carry out interpolation arithmetic in calculating, to calculate the corresponding Z coordinate figure according to Und.
Lens among Fig. 9 are that symmetry cutting forms, and are with the distance of lens axis such as the forward and backward both sides of this rectangular lens to equate.Certainly asymmetrical cutting to form the unequal rectangular lens of forward and backward both sides and optical axis distance, can be adjusted to the zone of light intensity maximum detection sensitivity like this and require on certain the highest position.Said lens also can be to realize the combination of the multiple lens that the invention is intended to.
How to utilize X, Y coordinate and the width W of plane grating detection computations operating body, 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 curve linearization in its signal sensitizing range or with secondary, cubic curve match, perhaps store the experimental data row interpolation computing of going forward side by side, these all are prior aries, repeat no more.
The above-mentioned element arrays that increases setting newly 115,115 ' and lens arra 121,121 ' also can be arranged on the left and right both sides of framework, or a plurality of aforementioned each array are set on four limits, upper and lower, left and right of framework simultaneously, the position of emission, receiving element can exchange.Also can double or multiple aforementioned each array be set along Z-direction---infrared components array or have the respective lens array only, use respectively to detect or detect on the range and continue mutually at the Z coordinate, unite use.Relevant detection circuit and calculation element can be provided with the setting of above-mentioned array.
Former Y coordinate detects the detection signal of the corresponding testing circuit output of infrared components array with the Changing Pattern of operating body Z coordinate and the basically identical of former X, can only use among X, the Y in the practical application, also X, Y detection signal can be united use.
Embodiment 2
With master control set, display device, the touch-free input device described in suggestion device and the embodiment 1 combines, and promptly constitutes the various touch input display devices of exempting from of present embodiment.
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 partly or entirely 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, or leaves the distance of display device panel, 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 3 described in the embodiment 1, Fig. 4 and shown in Figure 5, 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 14 and shown in Figure 15, 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 15,, 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.
As shown in Figure 15, three shaded rectangle have been represented aforementioned detecting operation body X, Y set on the framework 108 and the infrared components array and the lens arra of Z coordinate.Framework and keyboard other parts framework are integrated, and key panel 151 is arranged in the integrated frame, can see whole key panels clearly through the window that framework surrounds.Frame outer surface 101 is 55 millimeters apart from the distance of key panel 151, and plane grating is apart from 5 millimeters of frame outer surfaces, apart from 50 millimeters of key panels.Choose Z
1Be 25 millimeters, Z
2Be 10 millimeters, S ' is 30 millimeters, the distance L that close key panel side of lens and key panel are 151
1-Z
2-S ' equals 10 millimeters.Each key position on the keypad panel just can be known which key position of operating body positive sense with X, the corresponding division in Y planimetric coordinates zone in the window according to X, the Y planimetric coordinates of operating body.
Along Z-direction, near the frame window and inside is divided into several districts:
(1) outwards begin from plane grating, promptly the Z coordinate is the Zone Full of negative value, is defined as non-control district.In this zone, input media can only detect operating body and not enter the plane grating plane.
(2) begin inside 25 millimeters from plane grating, be defined as the operational zone.In this zone, input media can normally detect the variation of all X, Y planimetric coordinates information and the coordinate of operating body.
(3), be defined as the caution district from inside 25～35 millimeters places of plane grating.Operating body enters this zone and means and probeed into deeply, touches key panel easily.
(4) from inside 35～50 millimeters places of plane grating, 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.
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.
* * * * *
Claims (12)
1, a kind of infrared type touch-free input device with lens comprises: first detecting element 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 the described first detecting element array and separate the second detecting element array and corresponding second testing circuit of certain distance, place the second detecting element array light path, be used to increase by second and detect the lens arra of grating thickness, and utilize second calculation element of the output information calculating operation body of above-mentioned second testing circuit along the Z-direction positional information.
2, a kind of infrared type touch-free input device with lens as claimed in claim 1 is characterized in that described lens arra comprises series arrangement or integrated a plurality of rectangle convex lens arranged side by side.
3, a kind of infrared type touch-free input device with lens as claimed in claim 2 is characterized in that the distance of the forward and backward both sides of the rectangle convex lens in the described lens arra and lens axis is unequal.
4, a kind of infrared type touch-free input device as claimed in claim 2 with lens, it is characterized in that in the described lens arra lens for the benefit of the filter that passes through of Infrared make.
5, a kind of infrared type touch-free input device with lens as claimed in claim 2 is characterized in that on the focal position that emission in the described second detecting element array or receiving element lay respectively at its corresponding convex lens.
6, a kind of infrared type touch-free input device as claimed in claim 2 with lens, it is characterized in that between the first detecting element array and the second detecting element array or the back of the second detecting element array at least one detecting element array that be arranged in parallel, and correspondingly testing circuit and calculation element are set.
7, a kind of touch input device of exempting from comprises: display device, first detecting element 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 the described first detecting element array and separate the second detecting element array and corresponding second testing circuit of certain distance, place the second detecting element array light path, be used to increase the convex lens array of the second detection grating thickness, 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.
8, a kind of touch input device of exempting from as claimed in claim 7, 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.
9, a kind of touch input device of exempting from as claimed in claim 8, 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.
10, a kind of touch input device of exempting from as claimed in claim 7 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.
11, a kind of touch input device of exempting from as claimed in claim 8, it is characterized in that described master control set also comprises the output signal of utilizing comparison operation device or subtraction device, control the control device of described suggestion device with the variation pattern display operation body position information of figure, pattern, color or brightness.
12, a kind of touch input device of exempting from as claimed in claim 7 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03139943 CN1570814A (en) | 2003-07-26 | 2003-07-26 | Infrared touch-free input device with lenses and equipment applying same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03139943 CN1570814A (en) | 2003-07-26 | 2003-07-26 | Infrared touch-free input device with lenses and equipment applying same |
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| Publication Number | Publication Date |
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| CN1570814A true CN1570814A (en) | 2005-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03139943 Pending CN1570814A (en) | 2003-07-26 | 2003-07-26 | Infrared touch-free input device with lenses and equipment applying same |
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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 |
| CN101957691A (en) * | 2009-07-20 | 2011-01-26 | 瑞鼎科技股份有限公司 | Optical touch control system and operating method thereof |
| CN1838049B (en) * | 2005-03-21 | 2012-05-02 | 安华高科技Ecbuip(新加坡)私人有限公司 | Compact and low profile optical navigation device and its usage method |
| CN101996001B (en) * | 2009-08-25 | 2013-02-13 | 瑞鼎科技股份有限公司 | Optical touch control device and operating method thereof |
| CN107642944A (en) * | 2017-09-27 | 2018-01-30 | 惠州Tcl家电集团有限公司 | Management method, refrigerator and the computer-readable storage medium of refrigerator stored goods information |
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2003
- 2003-07-26 CN CN 03139943 patent/CN1570814A/en active Pending
Cited By (6)
| 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 |
| CN1838049B (en) * | 2005-03-21 | 2012-05-02 | 安华高科技Ecbuip(新加坡)私人有限公司 | Compact and low profile optical navigation device and its usage method |
| CN101957691A (en) * | 2009-07-20 | 2011-01-26 | 瑞鼎科技股份有限公司 | Optical touch control system and operating method thereof |
| CN101996001B (en) * | 2009-08-25 | 2013-02-13 | 瑞鼎科技股份有限公司 | Optical touch control device and operating method thereof |
| CN107642944A (en) * | 2017-09-27 | 2018-01-30 | 惠州Tcl家电集团有限公司 | Management method, refrigerator and the computer-readable storage medium of refrigerator stored goods information |
| CN107642944B (en) * | 2017-09-27 | 2020-08-21 | Tcl家用电器（合肥）有限公司 | Management method for information of articles stored in refrigerator, refrigerator and computer storage medium |
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