CN104834411A - Rapid scanning method for infrared touch screen - Google Patents
Rapid scanning method for infrared touch screen Download PDFInfo
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- CN104834411A CN104834411A CN201510106513.5A CN201510106513A CN104834411A CN 104834411 A CN104834411 A CN 104834411A CN 201510106513 A CN201510106513 A CN 201510106513A CN 104834411 A CN104834411 A CN 104834411A
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- infrared
- infrared touch
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- light intensity
- touch panel
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Abstract
The invention discloses a rapid scanning method for an infrared touch screen and relates to the technical field of infrared touch. The scanning method comprises the following steps: step 1: initializing the infrared touch screen and obtaining a scanning line according to receiving signal intensity of an infrared receiving element in the initializing process; step 2: receiving environment light: comparing the light intensity of the received environment light with pre-set light intensity; when judging that the light intensity of the environment light is smaller than the pre-set light intensity, carrying out one-to-one adjustment, so that the light is balanced; and step 3: carrying out touch scanning: scanning whether the touch screen has a shielded part or not, and expanding the shielded part according to a pre-set size value; calculating the center according to the shielded part; and determining the gravity center of the region as an actual touch point of the infrared touch screen. The rapid scanning method for the infrared touch screen is convenient for rapid scanning and calculation, and is simple and rapid to adjust, simple and convenient to operate, and convenient to use, so that the time is shortened, and the efficiency is improved.
Description
Technical field:
The present invention relates to a kind of method of infrared touch panel rapid scanning, belong to infrared touch technical field.
Background technology:
Infrared technology touch-screen is made up of the Infrared emitting and receiving sensing element be contained on touch-screen housing, and in screen surface, form infra-red detection net, any touching object can change the infrared ray on contact and realize touch screen operation.Infrared-type touch screen to realize principle similar to surface acoustic wave type touch-control, it uses Infrared emitting and receiving sensing element.These elements form infra-red detection net in screen surface, and the object (such as pointing) of touch control operation can change the infrared ray of electric shock, and then the response that the coordinate position and realizing being converted to touch-control operates.On infrared-type touch screen, the circuit board arrangement of four limit arrangements of screen has infrared transmitting tube and infrared receiving tube, the infrared ray matrix that corresponding formation intersects anyhow.
Whether infrared touch panel is the infrared ray matrix gathered in X, Y-direction before being close to screen, have infrared ray to be blocked by the body the touch detecting also consumer positioning by ceaselessly scanning.This touch-screen installs a housing before display, is designed with circuit board in housing, thus at screen four limit arrangement infrared transmitting tube and infrared receiving tube, one_to_one corresponding forms the infrared ray matrix anyhow intersected.Often scanned a circle, if all infrared tubes are sensible, green light, represents that all are normal.
When there being touch, finger or other thing will block infrared ray anyhow through this position, find and after be sure oing have an infrared ray to be obstructed during touch-screen scanning, when red, indicate that infrared ray is obstructed, may touch be had, change to another coordinate at once simultaneously and scan again, if find that an other axle also has an infrared ray to be obstructed again, amber light is bright, represent and find to touch, and two are found the infrared tube position message intercepted is to main frame, judges the position of touch point at screen through calculating.
Exceptionally hanging and built-in two kinds of infrared touch screen products.The installation method of external hanging type is very simple, is install most convenient in all touch-screens, as long as be fixed on before display by framework with glue or double faced adhesive tape.Electronics plug-in touch-screen in Antu is also fixed with display by hook, for convenience detachly leaves no trace.
React slow during existing infrared touch panel scanning, lose time, and efficiency is low, inconvenient operation.
Summary of the invention:
For the problems referred to above, the technical problem to be solved in the present invention is to provide a kind of method of infrared touch panel rapid scanning.
The method of a kind of infrared touch panel rapid scanning of the present invention, its scan method is:
Step one: initialization is carried out to infrared touch panel, in initialization procedure, the received signal strength according to infrared receiver component obtains sweep trace;
Step 2: reception environment light: the light intensity of received surround lighting and predetermined light intensity being compared, when judging that the light intensity of surround lighting is less than predetermined light intensity, then regulating one to one, makes light balance;
Step 3: touch scanning: whether touch screen scanning is blocked part, expands according to preset size value the part that is blocked; Calculate center according to shield portions, regional barycenter is defined as the actual touch point of described infrared touch panel.
As preferably, described step one carries out initialization to infrared touch panel, first carries out the detection of touch display screen, when testing and setting value is inconsistent, processed by information feed back to processing enter in initialization procedure.
As preferably, the center calculating the part that is blocked in described step 3 adopts coordinate scan-type to scan, and then coordinate information fed back to processing enter and calculate.
Beneficial effect of the present invention is: be convenient to rapid scanning and calculating, regulates easy, quick, saves the time, improve efficiency, easy and simple to handle, easy to use.
Embodiment:
This embodiment is by the following technical solutions: its scan method is:
Step one: initialization is carried out to infrared touch panel, in initialization procedure, the received signal strength according to infrared receiver component obtains sweep trace;
Step 2: reception environment light: the light intensity of received surround lighting and predetermined light intensity being compared, when judging that the light intensity of surround lighting is less than predetermined light intensity, then regulating one to one, makes light balance;
Step 3: touch scanning: whether touch screen scanning is blocked part, expands according to preset size value the part that is blocked; Calculate center according to shield portions, regional barycenter is defined as the actual touch point of described infrared touch panel.
Further, described step one carries out initialization to infrared touch panel, first carries out the detection of touch display screen, when testing and setting value is inconsistent, processed by information feed back to processing enter in initialization procedure.
Further, the center calculating the part that is blocked in described step 3 adopts coordinate scan-type to scan, and then coordinate information fed back to processing enter and calculate.
More than show and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and instructions just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (3)
1. the method for infrared touch panel rapid scanning, is characterized in that: its scan method is:
Step one: initialization is carried out to infrared touch panel, in initialization procedure, the received signal strength according to infrared receiver component obtains sweep trace;
Step 2: reception environment light: the light intensity of received surround lighting and predetermined light intensity being compared, when judging that the light intensity of surround lighting is less than predetermined light intensity, then regulating one to one, makes light balance;
Step 3: touch scanning: whether touch screen scanning is blocked part, expands according to preset size value the part that is blocked; Calculate center according to shield portions, regional barycenter is defined as the actual touch point of described infrared touch panel.
2. the method for infrared touch panel rapid scanning according to claim 1, it is characterized in that: described step one carries out initialization to infrared touch panel, the detection of touch display screen is first carried out in initialization procedure, when testing and setting value is inconsistent, information feed back is processed to processing enter.
3. the method for infrared touch panel rapid scanning according to claim 1, is characterized in that: the center calculating the part that is blocked in described step 3 adopts coordinate scan-type to scan, and then coordinate information fed back to processing enter and calculate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510106513.5A CN104834411A (en) | 2015-03-11 | 2015-03-11 | Rapid scanning method for infrared touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510106513.5A CN104834411A (en) | 2015-03-11 | 2015-03-11 | Rapid scanning method for infrared touch screen |
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| CN104834411A true CN104834411A (en) | 2015-08-12 |
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| CN201510106513.5A Pending CN104834411A (en) | 2015-03-11 | 2015-03-11 | Rapid scanning method for infrared touch screen |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107045410A (en) * | 2016-12-21 | 2017-08-15 | 北京汇冠触摸技术有限公司 | A kind of method and system for infrared touch panel high precision computation |
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| CN101110008A (en) * | 2007-07-25 | 2008-01-23 | 广东威创日新电子有限公司 | Touch panel device and multi-point touch locating method |
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| CN107045410A (en) * | 2016-12-21 | 2017-08-15 | 北京汇冠触摸技术有限公司 | A kind of method and system for infrared touch panel high precision computation |
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Address after: 063000 D, Pioneer Center, Tangshan City hi tech Zone, Hebei Applicant after: HEBEI HUAFA EDUCATION TECHNOLOGY CORP., LTD. Address before: 063000, building three, block D, Tangshan City hi tech Development Zone, Hebei Applicant before: Hebei grey hair telecom technology co., ltd |
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Application publication date: 20150812 |
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| RJ01 | Rejection of invention patent application after publication |