The electronic whiteboard of built-in membrane antenna array network electromagnetic inductive layer
Technical field:
The present invention relates to a kind of electronic whiteboard, the electronic whiteboard of the built-in membrane antenna array network electromagnetic inductive layer that especially a kind of cost is low, manufacturing is easy and accuracy of identification is high belongs to electronic technology field.
Background technology:
In work and life, people usually need to use blank to finish record or item are discussed.For example in teaching and meeting, though blank can be write literal, symbol etc. preferably, also can wipe easily, its content of doing record is to occur once, and can't reproduce and store.Therefore, be difficult to satisfy the application demand of current digitizing live and work day by day.
Along with development of electronic technology, no matter be the environment of giving lessons, or in the investigation process of department, brought into use electronic whiteboard in school.This product can be converted to electric signal in time with the symbol of writing on blank, inputs to the computing machine that is connected, and directly finishes remote information exchanges such as editor or printing, transmission again by computing machine.Existing electronic whiteboard perhaps can not be made because induction area is bigger, and for example the corrosion of printed-wiring board (PWB) is made induction; Perhaps because cost is too high, and can not adopt the induction structure of touch-screen constant resistance formula, so electronic whiteboard adopts ultrasonic emitting, receive mode between input pen and the electronic whiteboard to control more, its cost is still higher, and precision is lower, has limited the application of this series products greatly.Cause the enough quilts digitizing widely that delays of the link of this information interchange and generation.
In sum, existing product exists all that discrimination is low significantly, low precision, and also cost is higher, makes difficulty etc., to such an extent as to the shortcoming that can not be widely used.
Summary of the invention:
The objective of the invention is to provide at the deficiency of prior art a kind of electronic whiteboard of built-in membrane antenna array network electromagnetic inductive layer, its cost is lower, it is easy to manufacture, and the precision height of data acquisition identification.
Another purpose of the present invention is to provide a kind of electronic whiteboard of built-in membrane antenna array network electromagnetic inductive layer, and long service life is safeguarded simple.
The objective of the invention is to realize by the following technical solutions:
A kind of electronic whiteboard of built-in membrane antenna array network electromagnetic inductive layer, it comprises writing input part, is around in its peripheral coated frame part and control circuit device, writing input part is a sandwich construction, be folded in the framework, comprise surperficial writing layer, input inductive layer and bottom, the input inductive layer is provided with between writing layer and the bottom, the output connection control circuit of inductive layer, inductive layer is the aerial array along X, Y direction that is arranged on the insulation diaphragm, and the space that each array grid enclosed constitutes a sensing unit.
The area of inductive layer and writing layer and bottom are onesize or less than writing layer and bottom, promptly inductive layer is set up fully or partly is attached between writing layer and the bottom.Inductive layer is set up scope is write in the position in writing input part a side or central authorities.
In order to strengthen the anti-jamming capacity of equipment, behind inductive layer, also be provided with screen layer.Simultaneously, also be provided with cushion between inductive layer and the bottom, or also be provided with cushion between inductive layer and the screen layer.
Inductive layer can also for be printed on the insulation diaphragm, respectively along the aerial array of X, Y direction, space that its each grid enclosed constitutes a sensing unit.In order to reduce cost, insulation diaphragm is a film material.Inductive layer can be the aerial array that forms after the copper platinum etching that overlays on the insulation diaphragm, can be flexible printed wiring (FPC) aerial array, can also be to be printed on to be silver slurry or the silver-colored aerial array of starching carbon slurry made from mixed materials on the insulation diaphragm.
Inductive layer can be printed on the insulation diaphragm two sides, or is printed on the insulation diaphragm one side, and two-layer insulation diaphragm stacks formation.
In order to improve the precision of electronic whiteboard, be located at together the induction more than one deck is stacked, and the sensing unit on each inductive layer is an alternative arrangement.The gap size of every layer of sensing unit is identical or different.
In order to increase the write area of electronic whiteboard, the area of inductive layer is also wanted corresponding increase, an etching or an above barrier film that is printed with aerial array can be spliced to form mutually, be respectively equipped with X on each piece, Y directional aerial array is drawn electrical connection arrangement, draw electrical connection arrangement by lead between each piece and connect.
Coupling arrangement is pin type coupling arrangement or flexible printed wiring device or point-to-point (PIN-PIN) coupling arrangement or solder joint (VGA) hot melt coupling arrangement or ultrasonic brazing unit or pad welder or puncture type coupling arrangement.
Its control circuit comprises the collection of signal amplification filtering, data processing, also is provided with signal output control circuit and/or memory storage.Signal output apparatus comprises cable or the wireless data exchange device radio-frequency transmissions/receiver with computer standard data-interface.
Signal output apparatus connects computing machine and/or printer or external data storage device or by the modulation servicing unit line of answering the call.
Control circuit directly is connected for one with inductive layer, and the device of control circuit is set directly on the aerial array output terminal, and control circuit is provided with in the body.
Control circuit is connected with the output terminal at flexible printed wiring (FPC) aerial array, and the device of control circuit directly is set on it.
The device of control circuit is arranged on the printed-wiring board (PWB) that is provided with the inductive layer split, and the aerial array output terminal of inductive layer is with crimping or grafting or the welding manner input pin connection corresponding with printed-wiring board (PWB).
The aerial array output terminal of inductive layer is arranged in the middle of hard compressing tablet and the printed-wiring board (PWB), between hard compressing tablet and aerial array output terminal, be provided with cushion, hard compressing tablet, cushion and aerial array output terminal screw togather and are crimped on the printed-wiring board (PWB), and the input pin that the aerial array output terminal is corresponding with printed-wiring board (PWB) connects.
Control circuit and body are wholely set, and can be arranged on the peripheral housing of body.
It is external that control circuit is arranged on, be connected by electrical connection arrangement with body, the aerial array output terminal of inductive layer is connected with the inductive layer output interface with crimping or grafting or welding manner, and the interface with the electrical connection arrangement coupling of inductive layer is set on the control circuit.
The aerial array output terminal of inductive layer is arranged in the middle of hard compressing tablet and the electrical connection arrangement, between hard compressing tablet and aerial array output terminal, be provided with cushion, hard compressing tablet, cushion and aerial array output terminal screw togather and are crimped on the electrical connection arrangement, and the input pin that the aerial array output terminal is corresponding with electrical connection arrangement connects.
Inductive layer output interface and control circuit interface are pin type coupling arrangement or flexible printed wiring device or point-to-point (PIN-PIN) coupling arrangement or solder joint (VGA) hot melt coupling arrangement or ultrasonic brazing unit or pad welder or puncture type coupling arrangement.
The body frame of electronic whiteboard is provided with support outward, and body is erected on the support.Control circuit is arranged in the support, and interface is arranged on the support, and the inductive layer output interface is at the corresponding control circuit interface in the position of body.
In order to carry, to hang up conveniently, the writing input part of electronic whiteboard, to be around in its peripheral protecting border be the flexibility material of can curling.
Side at the electronic whiteboard body is fixed in the spool, and the spool two ends are provided with the torsion spring that folds body, and another side end of body is provided with the location buckle.Control circuit can be arranged in the spool.
According to the technique scheme analysis as can be known, the present invention is simple and reasonable, manufacture craft is simple, greatly reduce the cost of electronic whiteboard, easy to maintenance, and improved induction precision significantly, can be popularized widely, solve the digitized problem of this link, enriched the form of contemporary digital product more, produced the application model of utilizing one of electronic whiteboard main channel to exchange.
Description of drawings:
Fig. 1 is the embodiment of the invention one perspective view;
Fig. 2 is the antenna array structure synoptic diagram of inductive layer of the present invention along Y direction etching or printing;
Fig. 3 is the antenna array structure synoptic diagram of inductive layer of the present invention along X-direction etching or printing;
Fig. 4 is the sensing unit one-piece construction synoptic diagram that inductive layer X of the present invention, Y direction aerial array are constituted;
Fig. 5 is for induced signal of the present invention produces, input pen location recognition principle schematic;
The structure that Fig. 6 splices more than one for inductive layer of the present invention and be electrically connected the interface synoptic diagram;
The structural representation that Fig. 7 stacks for the two-layer inductive layer of the present invention;
Fig. 8 is provided with the annexation structural representation for inductive layer of the present invention and control circuit split;
Fig. 9 is the aerial array output terminal of the present invention input pin annexation structural representation corresponding with printed-wiring board (PWB);
Figure 10 is the embodiment of the invention two perspective view.
Embodiment:
Below in conjunction with accompanying drawing and specific embodiments the present invention is done detailed description further.
Embodiment one:
As shown in Figure 1, the present invention is a kind of electronic whiteboard of built-in membrane antenna array network electromagnetic inductive layer, it comprises writing input part, is around in its peripheral coated frame 1 part and control circuit device, writing input part is a sandwich construction, be folded in the framework, comprise surperficial writing layer 2, input inductive layer 5 and bottom 4, input inductive layer 5 is provided with between writing layer 2 and the bottom 4 the output connection control circuit of inductive layer 5.
As shown in Figure 1, in order to strengthen the equipment antijamming capability, also be provided with screen layer 6 behind the inductive layer 5, this screen layer 6 can overcome the interference of inductive layer 5 electromagnetism to control circuit work effectively.
Also be provided with cushion 7 between inductive layer 5 and the bottom 4, or also be provided with cushion 7 between inductive layer 5 and the screen layer 6.The function of cushion 7 is to keep between inductive layer and writing plane and the screen layer 6 rational gap is arranged.In addition, no matter the electromagnetic signal emission of pen is depressed or do not depressed at pen all has electromagnetic signal to take place, with convenient control.Certainly make pen and do not depress no signal, pen can also be accomplished pressure sensitive in addition, all realizes embodying by frequency is different on pen.
Shown in Fig. 2,3,4, inductive layer 5 can also for be printed on the insulation diaphragm 55, respectively along the aerial array 52,51 of X, Y direction, space that its each grid enclosed constitutes a sensing unit 53.In order to reduce cost, insulation diaphragm 55 is a film material.Inductive layer 5 can be the aerial array that forms after the copper platinum etching that overlays on the insulation diaphragm 55, can be flexible printed wiring (FPC) aerial array, can also be to be printed on to be silver slurry or the silver-colored aerial array of starching carbon slurry made from mixed materials on the insulation diaphragm.
Inductive layer can be printed on the insulation diaphragm two sides, or is printed on the insulation diaphragm one side, and two-layer insulation diaphragm stacks formation.
Shown in Figure 7, be the precision of raising electronic whiteboard, the inductive layer more than one deck 5 and 5 ' is folded be located at together sensing unit 53 alternative arrangement on each inductive layer.The gap size of every layer of sensing unit 53 can be identical or different.The gap size difference of each layer sensing unit 53, after size stacked, the interval of inevitable coordinate dwindled, and had also just improved the precision of induction.When the identical inductive layer of sensing unit 53 sizes was stacked together, because position each other is an alternative arrangement, coordinate had also dwindled at interval, thus the sensitivity that has improved electronic whiteboard.
As shown in Figure 6, if the write area of electronic whiteboard is bigger, the area of inductive layer is also wanted corresponding expansion, the lead electromagnetic induction layer 5 and 5 ' that has barrier film more than one can be spliced to form mutually, be respectively equipped with X on each piece, Y direction lead is drawn electrical connection arrangement 56 and 57, draw electrical connection arrangement 56 by lead between each piece and be connected with 57.
Above-mentioned coupling arrangement 56 and 57 can be pin type coupling arrangement or flexible printed wiring device or point-to-point (PIN-PIN) coupling arrangement or solder joint (VGA) hot melt coupling arrangement or ultrasonic brazing unit or pad welder or puncture type coupling arrangement.
The signal output apparatus of electronic whiteboard is wire cable coupling arrangement or wireless data exchange device.The wire cable coupling arrangement is the cable with USB connector; The wireless data exchange device is radio-frequency transmissions/receiver.Can finish local storage like this, or remote transmission, or Internet device directly is set, and be packet with the content packaging of importing, send.Certainly, signal output apparatus connects computing machine and/or printer, direct information editing, printing with inductive pick-up on the blank; Have, signal output apparatus directly connects data storage device again, can utilize flash memory device to import in the computing machine with after the data storage, or in other equipment.Signal output apparatus is consistent with the particular circuit configurations and the connected mode in the other field consumer electronics applications of peripheral equipment, does not repeat them here.
Control circuit directly is connected for one with inductive layer, and the device of control circuit is set directly on the aerial array output terminal, and control circuit is provided with in the body.
Control circuit is connected with the output terminal at flexible printed wiring (FPC) aerial array, and the device of control circuit directly is set on it.
The device of control circuit is arranged on the printed-wiring board (PWB) that is provided with the inductive layer split, and the aerial array output terminal of inductive layer is with crimping or grafting or the welding manner input pin connection corresponding with printed-wiring board (PWB).
As shown in Figure 9, it is middle with printed-wiring board (PWB) 500 that the aerial array output terminal of inductive layer is arranged on hard compressing tablet 600, between hard compressing tablet 600 and aerial array output terminal, be provided with cushion 7, hard compressing tablet 600, cushion 7 screws togather by nut 700 with the aerial array output terminal and is crimped on the printed-wiring board (PWB) 500, the input pin 511 ' connection that aerial array output terminal and printed-wiring board (PWB) 500 are corresponding.
When control circuit and body are wholely set, can be arranged in the coated frame of body periphery.
As shown in Figure 8, it is external that control circuit 8 is provided with, be connected by electrical connection arrangement with body, the aerial array output terminal of inductive layer 5 is connected with inductive layer output interface 82 with crimping, grafting or welding manner, the interface 81 of the electrical connection arrangement of setting and inductive layer coupling on the control circuit.
Inductive layer output interface 82 and control circuit interface 81 can be respectively pin type coupling arrangement or flexible printed wiring device or point-to-point (PIN-PIN) coupling arrangement or solder joint (VGA) hot melt coupling arrangement or ultrasonic brazing unit or pad welder or puncture type coupling arrangement.
The split setting of control circuit and body for the upgrading at any time of electronic whiteboard provides convenience, is convenient to care and maintenance simultaneously.
As shown in Figure 1, be provided with support 3 outside the body frame 1, body frame 1 is located on the support 3.Control circuit 8 is arranged in the support 3, and interface is arranged on the support 3, and inductive layer output interface 82 is at the corresponding control circuit interface 81 in the position of body.
Working mechanism of the present invention is as shown in Figure 5: P is the signal input part of pen among the figure, and a bigger conductor P ' is arranged on the nib, tries to achieve the planimetric coordinates position of pen, thereby determines the position of pen.
Time writer is constantly launched electromagnetic signal, when nib touches the induction generating means, its electromagnetic signal is passed the induction antenna position, the antenna induction of this position goes out signal, by the induction generating means position signalling of responding to is passed through X, the input port of the lead-in wire transmission control identification circuit of Y direction, through the array gating, control method, bandpass filtering, detection rectification and analog to digital conversion, calculate for the CPU of treatment circuit, judge position coordinates and the various duty of electromagnetic signal at induction antenna, send to computing machine by communication interface, thus control computer identification, show, record etc.
Have, the pressure of nib when obtaining writing improves the accuracy of signal location induction again, and the nib rear portion of input pen is provided with the Z-direction pressure transducer, and the output of this sensor connects the control end of electromagnetic wave generating device.Touch electromagnetic the transmitting of change by pressure like this, thereby discern the pressure (input signal) of nib more definitely.
In addition, signal output apparatus is wire cable coupling arrangement or wireless data exchange device.The wire cable coupling arrangement is the cable with USB connector; The wireless data exchange device is radio-frequency transmissions/receiver.Certainly, signal output apparatus connects computing machine and/or printer, direct information editing, printing with inductive pick-up on the blank; Have, signal output apparatus directly connects data storage device again, can utilize flash memory device to import in the computing machine with after the data storage, or in other equipment.Signal output apparatus is consistent with the particular circuit configurations and the connected mode in the other field consumer electronics applications of peripheral equipment, does not repeat them here.
The data that blank inductive pick-up of the present invention is exported are identification back data, are converted to the data of a motion track, perhaps are unidentified data, are each moment position coordinate data of pen.
Embodiment two:
As shown in figure 10; the present invention is a kind of portable electronic blank of inner conductors network electromagnetic inductive layer; its body comprises writing input part, is around in its peripheral protecting border and control circuit device; writing input part is a sandwich construction; be folded in the protecting border; comprise surperficial writing layer 2 and bottom 4; between writing layer 2 and bottom 4, be provided with input inductive layer 5; the output connection control circuit of inductive layer 5, is around in its peripheral protecting border 1 and is the flexibility material of can curling at writing input part.
As shown in figure 10, body is provided with a side and is fixed in the spool 100, and spool 100 two ends are provided with the torsion spring that folds body, and another side end of body is provided with location buckle 101.
As shown in figure 10, hang conveniently in order to carry and to receive, the surperficial writing layer 2 of electronic whiteboard, inductive layer 5, cushion 7, screen layer 6 and bottom 4 are can roll up curved flexible material.Body one side is fixed in the spool 100, and the spool two ends are provided with the torsion spring that folds body, and another side end of body is provided with location buckle 101, is used for the location of electronic whiteboard rolling when complete.Furling mechanisms such as its spool, torsion spring and corresponding mechanism and existing projection screen, roller shutter curtain are similar, do not repeat them here.Rollable electronic whiteboard carries, receives to be hung conveniently, saves the space.
For aesthetic in appearance, complete, control circuit can be arranged in the spool 100.
The other technologies feature of present embodiment is all identical with embodiment one, and detailed embodiment can repeat no more referring to the related content of embodiment one herein.
Above embodiment is only unrestricted in order to explanation the present invention, although the present invention is had been described in detail with reference to above preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment, be out of shape the present invention or be equal to replacement, and not breaking away from the spirit and scope of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.