CN103777820A - Scanning projection touch device - Google Patents
Scanning projection touch device Download PDFInfo
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- CN103777820A CN103777820A CN201210409084.5A CN201210409084A CN103777820A CN 103777820 A CN103777820 A CN 103777820A CN 201210409084 A CN201210409084 A CN 201210409084A CN 103777820 A CN103777820 A CN 103777820A
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Abstract
Disclosed is a scanning projection touch device. The scanning projection touch device consists of a scanning mechanism, an invisible light source, a half-reflecting mirror, a light sensing unit and a microprocessor. The scanning mechanism comprises a scanning unit, a scanning mirror and a visible light source. When an object touches a touch spot of a screen, the light sensing unit can sense invisible light reflected by the object to generate a sensing signal. The microprocessor detects the sensing signal transmitted by the light sensing unit, a scanning coordinate of the scanning unit for driving the scanning mirror at the time is confirmed according to the occurrence time of the sensing signal in a scanning period, so that the location information corresponding to the touch spot is acquired, and a corresponding touch signal is output. The cheap light sensing unit and one invisible light source can be used for being matched with the known scanning mechanism, and the effect for sensing touch spot coordinates can be achieved. The structure is simple, cost is low, a trigonometric formula is needless for calculating the touch spot coordinates, and time can be saved.
Description
Technical field
The present invention is relevant contactor control device, especially relevant scanning projection contactor control device.
Background technology
As shown in Figure 1, there is on the market a kind of MEMS (MEMS (micro electro mechanical system)) scanning mechanism 1, comprise one scan unit 11, one scan mirror 12 and a visible light source 13; Wherein scanning element 11 is a MEMS (micro electro mechanical system) (Micro Electro Mechanical System, MEMS); Scanning mirror 12 is a micro scanning mirror (Micro scanning mirror, MSM).In the time that visible light source 13 penetrates ray cast corresponding to a fixing or dynamic image in scanning mirror 12, drive scanning mirror 12 from left to right by scanning element 11, scanning is from top to bottom projected on a projecting plane 14, can show corresponding image.
Also by the scanning mechanism that comprises that scanning element that two motors form and scanning mirror form, utilize scanning element to drive scanning mirror on the market, from left to right, scanning is from top to bottom projected on a projecting plane light that light source is penetrated, to show corresponding image.
TaiWan, China patent M372974, discloses a kind of micro electromechanical scanning Touch Screen, comprises that light source assembly, mems mirror, optical sensor, light sensing signal processor and coordinate calculator form.When light source assembly sends after luminous ray, luminous ray scanning is become scanning light beam by mems mirror, in the time of pen or finger fingertip screen, interdict scanning light beam and on optical sensor, form after two dim spots, transmitted the electronic signal of correspondence to coordinate calculator by light sensing signal processor, and then determine contact position.
Above-mentioned TaiWan, China patent need be utilized multiple assemblies such as two light sources, two mems mirrors and multiple optical sensors, just can determine contact position, and cost is higher; And need utilize triangle formula to calculate contact coordinate, more time-consuming.
Summary of the invention
The object of the present invention is to provide a kind of scanning projection contactor control device, to improve known scanning projection touch-control contact coordinate sensing apparatus wherein.
For achieving the above object, scanning projection contactor control device provided by the invention, comprising:
One scan mechanism, is provided with one scan unit and one scan mirror;
One invisible light source;
One first photosensitive unit;
One microprocessor;
Wherein the first sensing signal of this first photosensitive unit senses and this scanning element drive the scanning coordinate of this scanning mirror, respectively by wired or wireless this microprocessor that transfers to;
When this first photosensitive unit is placed in the edge on a projecting plane or is placed in the outside at the edge on this projecting plane, and the invisible light of this invisible light source transmitting is incident upon this scanning mirror, this scanning element drive this scanning mirror by this invisible light in the enterprising line scanning in this projecting plane, and when the contact on an object contact or contiguous this projecting plane, this first photosensitive unit will sense the invisible light that is reflected this scanning mirror and scan this projecting plane by this object, and senses one first sensing signal in this scanning mirror scans one scan cycle on this projecting plane; This microprocessor detects this first sensing signal that this first photosensitive unit transmits, the time occurring in this scan period according to this first sensing signal, confirm that this scanning element drives the scanning coordinate of this scanning mirror in this time, obtain exporting corresponding to the positional information of this contact one first corresponding touching signals.
Described scanning projection contactor control device, wherein, further comprises a vibratory sensation measurement unit; The second sensing signal of this vibratory sensation measurement unit sensing is by wired or wireless this microprocessor that transfers to; When this vibratory sensation measurement unit is placed in the edge on this projecting plane, and this object is while touching this projecting plane, and this vibratory sensation measurement unit will sense this projecting plane and be touched the vibrations of generation, and within this scan period, senses one second sensing signal; This second sensing signal that this microprocessor senses transmits to this vibratory sensation measurement unit, according to one second touching signals corresponding to this second sensing signal output of varying strength.
Described scanning projection contactor control device, wherein, further comprises one second photosensitive unit; The 3rd sensing signal of this second photosensitive unit senses is by wired or wireless this microprocessor that transfers to; In the time that this second photosensitive unit is placed in the front on this projecting plane, this second photosensitive unit will sense the invisible light that is reflected this scanning mirror and scan this projecting plane by this object, and senses one the 3rd sensing signal in this scanning mirror scans this scan period on this projecting plane; This microprocessor detects the 3rd sensing signal that this second photosensitive unit transmits, and in the time that this scan period occurs, confirms shape or the positional information of this object in this front, projecting plane according to the 3rd sensing signal, and an interactive signal corresponding to output.
Described scanning projection contactor control device, wherein, further comprises one second photosensitive unit; The 3rd sensing signal of this second photosensitive unit senses is by wired or wireless this microprocessor that transfers to; In the time that this second photosensitive unit is placed in the front on this projecting plane, this second photosensitive unit will sense the invisible light that is reflected this scanning mirror and scan this projecting plane by this object, and senses one the 3rd sensing signal in this scanning mirror scans this scan period on this projecting plane; This microprocessor detects the 3rd sensing signal that this second photosensitive unit transmits, and in the time that this scan period occurs, confirms shape or the positional information of this object in this front, projecting plane according to the 3rd sensing signal, and the interactive signal of output one correspondence.
Described scanning projection contactor control device, wherein, further comprises a half-reflecting mirror; This scanning mechanism further comprises a visible light source; This visible light source and this invisible light source are placed in respectively the side of this half-reflecting mirror; This half-reflecting mirror is placed in the side of this scanning mirror; Visible ray and the invisible light of this visible light source and the transmitting of this invisible light source penetrate respectively this half-reflecting mirror and are reflected by this half-reflecting mirror, are then incident upon respectively this scanning mirror.
Described scanning projection contactor control device, wherein, this visible ray and this invisible light are that same path is incident upon respectively this scanning mirror.
Described scanning projection contactor control device, wherein, this scanning mechanism is MEMS (micro electro mechanical system) scanning mechanism.
Described scanning projection contactor control device, wherein, this visible light source is LASER Light Source; This invisible light source is infrared light sources or ultraviolet light source.
Described scanning projection contactor control device, wherein, this visible ray and this invisible light are that same path is incident upon respectively this scanning mirror.
The photosensitive unit that utilization of the present invention is more cheap and an invisible light source, coordinate known scanning mechanism, just can reach the effect of sensing contact coordinate, and simple in structure, cost is low, and do not need to utilize triangle formula to calculate contact coordinate, saves time.
Photosensitive unit, vibratory sensation measurement unit and an invisible light source that utilization of the present invention is more cheap, coordinate known scanning mechanism, just can sensed object touch at positional information or the object in front, projecting plane the vibration information that projecting plane produces, and export respectively corresponding touching signals.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that known MEMS scanning mechanism scanning is projected to a projecting plane.
Fig. 2 is the schematic diagram that the present invention scans projection contactor control device.
Fig. 3 is the schematic diagram of the present invention's the first sensing signal.
Fig. 4 is the schematic diagram of the present invention's the second sensing signal.
Fig. 5 is the schematic diagram of the present invention's the 3rd sensing signal.
Primary clustering symbol description in accompanying drawing:
1MEMS scanning mechanism; 10 scanning mechanisms; 11 scanning elements; 12 scanning mirrors; 13 visible light sources; 131 visible rays; 14 projecting planes; 141 edges; 2 scanning projection contactor control devices; 21 invisible light sources; 211 invisible lights; 22 half-reflecting mirrors; 23 first photosensitive units; 231 first sensing signals; 24 second photosensitive units; 241 second sensing signals; 25 vibratory sensation measurement units; 251 the 3rd sensing signals; 26 microprocessors; 27 objects; 271 contacts.
Embodiment
Fundamental purpose of the present invention, a kind of scanning projection contactor control device is provided, comprises that one scan mechanism, an invisible light source, a half-reflecting mirror, a photosensitive unit and a microprocessor form; Scanning mechanism comprises one scan unit, one scan mirror and a visible light source; The visible ray of visible light source and invisible light source transmitting and invisible light penetrating and half-reflecting mirror and being reflected by half-reflecting mirror respectively, then same path is incident upon scanning mirror; Scanning element drives scanning mirror in an enterprising line scanning in projecting plane, makes screen show image; In the time having an object to touch a contact of a screen, light sensing unit will sense the invisible light being reflected by object and produce a sensing signal; Microprocessor detects the sensing signal that light sensing unit transmits, the time occurring in the one scan cycle according to sensing signal, confirm that scanning element drives the scanning coordinate of scanning mirror in this time, obtain the positional information corresponding to contact, and the touching signals of output one correspondence.
Another object of the present invention, a kind of scanning projection contactor control device is being provided, utilize more cheap photosensitive unit and an invisible light source, coordinate known scanning mechanism, the effect that just can reach sensing contact coordinate, simple in structure, cost is low, and do not need to utilize triangle formula to calculate contact coordinate, save time.
Another object of the present invention, is providing a kind of scanning projection contactor control device, can sensed object touch at positional information or the object in front, projecting plane the vibration information that projecting plane produces, and export respectively corresponding touching signals.
Scanning projection contactor control device of the present invention, comprising:
One scan mechanism, is provided with one scan unit and one scan mirror;
One invisible light source;
One first photosensitive unit;
One microprocessor;
Wherein the first sensing signal of this first photosensitive unit senses and this scanning element drive the scanning coordinate of this scanning mirror, respectively by wired or wireless this microprocessor that transfers to;
When this first photosensitive unit is placed in the edge on a projecting plane or is placed in the outside at the edge on this projecting plane, and the invisible light of this invisible light source transmitting is incident upon this scanning mirror, this scanning element drive this scanning mirror by this invisible light in the enterprising line scanning in this projecting plane, and when the contact on an object contact or contiguous this projecting plane, this first photosensitive unit will sense the invisible light that is reflected this scanning mirror and scan this projecting plane by this object, and senses one first sensing signal in this scanning mirror scans one scan cycle on this projecting plane; This microprocessor detects this first sensing signal that this first photosensitive unit transmits, the time occurring in this scan period according to this first sensing signal, confirm that this scanning element drives the scanning coordinate of this scanning mirror in this time, obtain exporting corresponding to the positional information of this contact one first corresponding touching signals.
Scanning projection contactor control device of the present invention, further comprises a vibratory sensation measurement unit; The second sensing signal of this vibratory sensation measurement unit sensing is by wired or wireless this microprocessor that transfers to; In order to do be placed in the edge on this projecting plane when this vibratory sensation measurement unit, and this object is while touching this projecting plane, and this vibratory sensation measurement unit will sense this projecting plane and be touched the vibrations of generation, and within this scan period, senses one second sensing signal; This second sensing signal that this microprocessor senses transmits to this vibratory sensation measurement unit, according to one second touching signals corresponding to this second sensing signal output of varying strength.
Scanning projection contactor control device of the present invention, further comprises one second photosensitive unit; The 3rd sensing signal of this second photosensitive unit senses is by wired or wireless this microprocessor that transfers to; In order to do in the time that this second photosensitive unit is placed in the front on this projecting plane, this second photosensitive unit will sense the invisible light that is reflected this scanning mirror and scan this projecting plane by this object, and senses one the 3rd sensing signal in this scanning mirror scans this scan period on this projecting plane; This microprocessor detects the 3rd sensing signal that this second photosensitive unit transmits, and in the time that this scan period occurs, confirms shape or the positional information of this object in this front, projecting plane according to the 3rd sensing signal, and the interactive signal of output one correspondence.
Scanning projection contactor control device of the present invention, further comprises a half-reflecting mirror; This scanning mechanism further comprises a visible light source; This visible light source and this invisible light source are placed in respectively the side of this half-reflecting mirror; This half-reflecting mirror is placed in the side of this scanning mirror; Visible ray and the invisible light of this visible light source and the transmitting of this invisible light source penetrate respectively this half-reflecting mirror and are reflected by this half-reflecting mirror, are then incident upon respectively this scanning mirror.
Wherein this visible ray and this invisible light are that same path is incident upon respectively this scanning mirror; This scanning mechanism is MEMS (micro electro mechanical system) scanning mechanism; This visible light source is LASER Light Source; This invisible light source is infrared light sources or ultraviolet light source.
Other objects of the present invention, effect, refer to drawings and Examples, is described in detail as follows.
As shown in Figure 2, the present invention scans projection contactor control device 2, comprises that one scan mechanism 10, an invisible light source 21, a half-reflecting mirror 22, one first photosensitive unit 23, one second photosensitive unit 24, a vibratory sensation measurement unit 25 and a microprocessor 26 form; Scanning mechanism 10 comprises one scan unit 11, one scan mirror 12 and a visible light source 13.
The first photosensitive unit 23 and vibratory sensation measurement unit 25 are placed in respectively the edge 141 on projecting plane 14; The first photosensitive unit 23 also can be put the outside at the edge 141 on projecting plane 14.Scanning mirror 12 and the second photosensitive unit 24 are placed in the front on projecting plane 14.
When the first photosensitive unit 23 contacts in order to sensing one object 27 or is close to a contact 271 on projecting plane 14, the invisible light 211 of reflective scan mirror 12 scanning projection faces 14, and within the one scan cycle (0.03 second) of scanning mirror 12 scanning projection faces 14, sense the first sensing signal 231 that a light intensity is stronger, as shown in Figure 3.Within the one scan cycle, occur that the time of the first sensing signal 231 is corresponding to the coordinate of contact 271.The first photosensitive unit 23 can only sensing the invisible light 211 that reflects of the object 27 on contact or very contiguous projecting plane 14, so the time span that the first sensing signal 231 occurs within the one scan cycle is shorter.
When vibratory sensation measurement unit 25 touches a contact 271 on projecting plane 14 in order to sensing one object 27, the vibrations that projecting plane 14 is produced, and within the one scan cycle of scanning mirror 12 scanning projection faces 14, sense the second sensing signal 251 that a shockproofness is stronger, as shown in Figure 4.Within the one scan cycle, occur that the time of the second sensing signal 251 is corresponding to the coordinate of contact 271.
The second photosensitive unit 24 in order to sensed object 27 when 14 front, projecting plane, the invisible light 211 of reflective scan mirror 12 scanning projection faces 14, and within the one scan cycle of scanning mirror 12 scanning projection faces 14, sense the 3rd sensing signal 241 that a light intensity is stronger, as shown in Figure 5.The time that occurs the 3rd sensing signal 241 within the one scan cycle is shape and the positional information in 14 fronts, projecting plane corresponding to object 27.The time span that the 3rd sensing signal 241 occurs is long compared with the first sensing signal 231.
The sensing signal of the first photosensitive unit 23, the second photosensitive unit 24 and vibratory sensation measurement unit 25 can be sent to microprocessor 26 by wire transmission mode or wireless transmission method respectively.Scanning element 11 drives the scanning coordinate of scanning mirror 12 to be sent to microprocessor 26 by wire transmission mode or wireless transmission method.
In the time that object 27 contacts or be close to a contact 271 on projecting plane 14, the first photosensitive unit 23 will sense by the invisible light 211 of object 27 reflective scan mirror 12 scanning projection faces 14, and within a cycle of scanning mirror 12 scanning projection faces 14, sense the first sensing signal 231 that a light intensity is stronger, as shown in Figure 3; Microprocessor 26 detects the first sensing signal 231 that the first photosensitive unit 23 transmits, the time occurring in the one scan cycle according to the first sensing signal 231, confirm that scanning element 11 drives the scanning coordinate of scanning mirror 12 in this time, obtain the positional information corresponding to contact 271, and the first touching signals of output one correspondence.
In the time that object 27 touches a contact 271 on projecting plane 14, vibratory sensation measurement unit 25 will sense projecting plane 14 and touched the vibrations of generation, and within the one scan cycle of scanning mirror 12 scanning projection faces 14, sense the second sensing signal 251 that a shockproofness is stronger, as shown in Figure 4; Microprocessor 26 detects the second sensing signal 251 that vibratory sensation measurement unit 25 transmits, according to second touching signals corresponding to the second sensing signal 251 output of varying strength, for example, export the sound of corresponding different volumes according to the second sensing signal 251 of varying strength.
When object 27 is during in 14 front, projecting plane, the second photosensitive unit 24 will sense by the invisible light 211 of object 27 reflective scan mirror 12 scanning projection faces 14, and within a cycle of scanning mirror 12 scanning projection faces 14, sense the 3rd sensing signal 241 that a light intensity is stronger, as shown in Figure 5.The time that occurs the 3rd sensing signal 241 within the one scan cycle is the positional information in 14 fronts, projecting plane corresponding to object 27; Microprocessor 26 detects the 3rd sensing signal 241 that the second photosensitive unit 24 transmits, the time occurring in the one scan cycle according to the 3rd sensing signal 241, confirm shape and the positional information of object 27 in 14 fronts, projecting plane, and the interactive signal of output one correspondence for example can change interactive signal corresponding to output according to the gesture that floats over 14 fronts, projecting plane.
The first photosensitive unit 23 of the present invention, the second photosensitive unit 24 and vibratory sensation measurement unit 25 can be used alone or comprise at least two and merge use, to coordinate various touch-control demand.
As Fig. 2, 3, 4, shown in 5, when the present invention uses the first photosensitive unit 23 simultaneously, the second photosensitive unit 24 and vibratory sensation measurement unit 25, and when object 27 touches a contact 271 on projecting plane 14, the first photosensitive unit 23, the second photosensitive unit 24 and vibratory sensation measurement unit 25 will sense respectively the first sensing signal 231 approaching the same time, the 3rd sensing signal 241 and the second sensing signal 251, microprocessor 26 is according to the first sensing signal 231, the 3rd sensing signal 241 and the first touching signals corresponding to the second sensing signal 251 output, the second touching signals and interactive signal.
Above record, only, for utilizing the embodiment of the technology of the present invention content, modification, variation that any those skilled in the art use the present invention to do, all belong to the claim scope that the present invention advocates.
Claims (9)
1. a scanning projection contactor control device, comprising:
One scan mechanism, is provided with one scan unit and one scan mirror;
One invisible light source;
One first photosensitive unit;
One microprocessor;
Wherein the first sensing signal of this first photosensitive unit senses and this scanning element drive the scanning coordinate of this scanning mirror, respectively by wired or wireless this microprocessor that transfers to;
When this first photosensitive unit is placed in the edge on a projecting plane or is placed in the outside at the edge on this projecting plane, and the invisible light of this invisible light source transmitting is incident upon this scanning mirror, this scanning element drive this scanning mirror by this invisible light in the enterprising line scanning in this projecting plane, and when the contact on an object contact or contiguous this projecting plane, this first photosensitive unit will sense the invisible light that is reflected this scanning mirror and scan this projecting plane by this object, and senses one first sensing signal in this scanning mirror scans one scan cycle on this projecting plane; This microprocessor detects this first sensing signal that this first photosensitive unit transmits, the time occurring in this scan period according to this first sensing signal, confirm that this scanning element drives the scanning coordinate of this scanning mirror in this time, obtain exporting corresponding to the positional information of this contact one first corresponding touching signals.
2. scanning projection contactor control device according to claim 1, wherein, further comprises a vibratory sensation measurement unit; The second sensing signal of this vibratory sensation measurement unit sensing is by wired or wireless this microprocessor that transfers to; When this vibratory sensation measurement unit is placed in the edge on this projecting plane, and this object is while touching this projecting plane, and this vibratory sensation measurement unit will sense this projecting plane and be touched the vibrations of generation, and within this scan period, senses one second sensing signal; This second sensing signal that this microprocessor senses transmits to this vibratory sensation measurement unit, according to one second touching signals corresponding to this second sensing signal output of varying strength.
3. scanning projection contactor control device according to claim 1, wherein, further comprises one second photosensitive unit; The 3rd sensing signal of this second photosensitive unit senses is by wired or wireless this microprocessor that transfers to; In the time that this second photosensitive unit is placed in the front on this projecting plane, this second photosensitive unit will sense the invisible light that is reflected this scanning mirror and scan this projecting plane by this object, and senses one the 3rd sensing signal in this scanning mirror scans this scan period on this projecting plane; This microprocessor detects the 3rd sensing signal that this second photosensitive unit transmits, and in the time that this scan period occurs, confirms shape or the positional information of this object in this front, projecting plane according to the 3rd sensing signal, and an interactive signal corresponding to output.
4. scanning projection contactor control device according to claim 2, wherein, further comprises one second photosensitive unit; The 3rd sensing signal of this second photosensitive unit senses is by wired or wireless this microprocessor that transfers to; In the time that this second photosensitive unit is placed in the front on this projecting plane, this second photosensitive unit will sense the invisible light that is reflected this scanning mirror and scan this projecting plane by this object, and senses one the 3rd sensing signal in this scanning mirror scans this scan period on this projecting plane; This microprocessor detects the 3rd sensing signal that this second photosensitive unit transmits, and in the time that this scan period occurs, confirms shape or the positional information of this object in this front, projecting plane according to the 3rd sensing signal, and the interactive signal of output one correspondence.
5. according to the scanning projection contactor control device described in claim 1,2,3 or 4, wherein, further comprise a half-reflecting mirror; This scanning mechanism further comprises a visible light source; This visible light source and this invisible light source are placed in respectively the side of this half-reflecting mirror; This half-reflecting mirror is placed in the side of this scanning mirror; Visible ray and the invisible light of this visible light source and the transmitting of this invisible light source penetrate respectively this half-reflecting mirror and are reflected by this half-reflecting mirror, are then incident upon respectively this scanning mirror.
6. scanning projection contactor control device according to claim 5, wherein, this visible ray and this invisible light are that same path is incident upon respectively this scanning mirror.
7. scanning projection contactor control device according to claim 5, wherein, this scanning mechanism is MEMS (micro electro mechanical system) scanning mechanism.
8. scanning projection contactor control device according to claim 7, wherein, this visible light source is LASER Light Source; This invisible light source is infrared light sources or ultraviolet light source.
9. scanning projection contactor control device according to claim 8, wherein, this visible ray and this invisible light are that same path is incident upon respectively this scanning mirror.
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| CN201210409084.5A CN103777820A (en) | 2012-10-23 | 2012-10-23 | Scanning projection touch device |
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| CN201210409084.5A CN103777820A (en) | 2012-10-23 | 2012-10-23 | Scanning projection touch device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110753212A (en) * | 2018-07-23 | 2020-02-04 | 中国科学院苏州纳米技术与纳米仿生研究所 | Interactive laser projection system |
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| US20100026960A1 (en) * | 2008-07-30 | 2010-02-04 | Microvision, Inc. | Scanned Beam Overlay Projection |
| CN201741135U (en) * | 2010-08-03 | 2011-02-09 | 北京汇冠新技术股份有限公司 | Touch screen, touch system and display device |
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Patent Citations (3)
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| CN101118314A (en) * | 2007-07-31 | 2008-02-06 | 北京汇冠新技术有限公司 | Light path system detecting touch article coordinate using MEMS microscope |
| US20100026960A1 (en) * | 2008-07-30 | 2010-02-04 | Microvision, Inc. | Scanned Beam Overlay Projection |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110753212A (en) * | 2018-07-23 | 2020-02-04 | 中国科学院苏州纳米技术与纳米仿生研究所 | Interactive laser projection system |
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Application publication date: 20140507 |