CN101866252A - Waterproof method of capacitance type touch apparatus - Google Patents
Waterproof method of capacitance type touch apparatus Download PDFInfo
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- CN101866252A CN101866252A CN 201010223611 CN201010223611A CN101866252A CN 101866252 A CN101866252 A CN 101866252A CN 201010223611 CN201010223611 CN 201010223611 CN 201010223611 A CN201010223611 A CN 201010223611A CN 101866252 A CN101866252 A CN 101866252A
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Abstract
The invention relates to a waterproof method of a capacitance type touch apparatus, which comprises the following steps of: detecting the oscillogram of induction of the touch apparatus on a canning line; and if the oscillogram of induction of the touch apparatus detected at a moment is in a cosine wave shape, recalibrating or abandoning calibration. By using the waterproof method of the capacitance type touch apparatus, water track is detected according to changes of the oscillogram of induction of the touch apparatus on the canning line. The method is simple and convenient, is convenient to configure and achieves the waterproof purpose of the touch apparatus in different states, thereby the method is suitable for application in fields of household and office and the like.
Description
Technical field
The present invention relates to a kind of waterproof method of touching device, refer in particular to a kind of waterproof method of capacitance type touch apparatus.
Background technology
Along with high-speed development of science and technology, snafu variation has taken place in electronic product, appearance along with recent touch type electronic series products, touch product and more and more be subjected to pursuing of people, not only it can save the space, be convenient for carrying, but and the user by finger or pointer etc. direct control just, use comfortable, very convenient.For example, the common personal digital assistant (PDA) of existing market, touch class mobile phone, portable notebook computer or the like, all strengthened input, so touch device must have application more widely in every field in the future to touching technique.
At present, capacitive type touch pad is because wear-resistant, life-span is long, and on light loss and system behavio(u)r, have more advantage, so capacitive type touch pad has been subjected to pursuing of market recently, and various capacitance touch screen products also emerge one after another, along with popularizing of electronic product, the scope that the user uses touching device also more and more widely, and no matter be when in office, also or at home using described touching device, if water is spattered on this touching device accidentally, this moment, touch system will be affected so, even the water mark is dried, also still can not return to original state, the user just can not effectively carry out touch operation, how since, just make troubles to the user unavoidably.
Therefore need solve above problem for users provide a kind of easier method.
Summary of the invention
The actual technical matters to be solved of the present invention be how to provide a kind of can be at capacitance type touch apparatus to reach the method for waterproof.
In order to realize above-mentioned purpose of the present invention, the invention provides a kind of waterproof method of capacitance type touch apparatus, it may further comprise the steps: the oscillogram that detects described touching device induction amount on sweep trace; Be cosine waveform if a certain moment begins to detect the oscillogram of described touching device induction amount, then need again or abandon calibration.
The waterproof method of capacitance type touch apparatus of the present invention, utilize the variation of Trackpad upper tracer induction amount oscillogram to detect whether the water mark is arranged, not only method is easy, and be convenient to be provided with, under the different state of touching device, all can reach the purpose of waterproof, so occasions such as the household of being adapted at, office are applied.
Description of drawings
Fig. 1 is the variation diagram of induction amount when touch pad is without any input according to the present invention;
Fig. 2 is the variation diagram of induction amount when on the touch pad touch object being arranged according to the present invention;
Fig. 3 is the variation diagram of induction amount when according to the present invention the water mark being arranged on the touch pad.
Embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
Please in conjunction with the accompanying drawings shown in 1, we at first adopt the method for difference inductance capacitance to measure touching device, as touch pad, touch-screen etc.So-called difference measurement is meant: after touch panel powered on, sweep trace began scanning, and without any the input media touch panel time, the variation of whole contact type panel capacitance is tending towards a steady state value, and the desired quantity of this steady state value is zero, as shown in Figure 1.When any input equipment such as this panel of finger touches, this capacitance will change, after scanning for the first time, when scanning again for the second time, two capacitances of same position have just formed a difference, and so just having formed is just having, having negative capacitance, has promptly finally formed minimum and maximum capacitance, thereby can judge the position of finger, as shown in Figure 2.
The mode of above-mentioned difference measurement capacitance, just get the method for relative capacitance, through facts have proved, has more intense antijamming capability, and in a single day the touch object is placed on the described touch pad, and form oscillogram as shown in Figure 2, but we are with regard to the described touch object of decidable operate as normal on this touch pad.Because utilize to touch object as described in the touchings such as finger or capacitance pen during touch pad, because human body is a conductor, and be connected with ground, when human finger or capacitance pen are touched the operation touch pad, the capacitance touch chip scanning on the described touch pad to capacitance will form the sinusoidal swash of a similar Fig. 2.And if water is when being seated on this Trackpad because the water mark on the touch pad contact with ground, so at this moment on the touch pad oscillogram of detected induction amount will form the cosine swash of a similar Fig. 3.Whether be cosine waveform by the oscillogram that detects described touching device induction of a certain moment amount thus, just can infer according to the oscillogram of induction amount on this touch pad then whether to have on the touch pad influence of water mark.
Below we specifically discuss the waterproof method of capacitance type touch apparatus again; in order to write down above-mentioned differential capacitance value more accurately; so just need calibrate automatically to contact panel; and after described touch pad powers on; the state of touch pad when powering on; it still is anhydrous mark that the water mark is arranged in this way, and this touch pad all can be calibrated automatically.If a certain moment when touch pad powers on has just been dipped in the water mark, so described touch pad will carry out wrong calibration, have the initial value that detects on the Trackpad of water mark to deposit in the chip of described touch pad this, the induction amount oscillogram that detects after the calibration through sweep trace scanning will be similar to cosine waveform shown in Figure 3 so.So, we just need make touch pad recalibrate till the oscillogram that detects the induction amount is steady state value shown in Figure 1, and at this moment just show the water mark of touch pad or evaporated or dried, be not had the water mark on the touch pad at this moment in a word.This variation oscillogram by senses touch plate induction amount has finally just arrived the purpose of water-proofing treatment.It should be noted that a certain moment when powering on, must guarantee it is oscillogram in the induction amount that does not have to detect under the situation of touch object touching.
And in use, accidentally the water mark is dipped in situation at described touch pad, because described touch pad still is in normal condition in the oscillogram that previous moment scanning detects, form sinusoidal waveform as shown in Figure 2, in case and the water mark at a time dips on this touch pad, so from then on, constantly begin, the oscillogram of the detected calibration back induction of sweep trace amount will be changed to cosine waveform as shown in Figure 3, so, we just can have the water mark certainly on this touch pad, at this moment, touch pad is abandoned the step of calibration automatically, promptly not storing this moment touch pad detected induction amount waveform is the numerical value of cosine waveform, and the oscillogram of waiting to continue to detect touch pad induction amount has just shown on the described touch pad anhydrous mark when being tending towards above-mentioned steady state value once more.Because this moment, the initial value of described touch plate automatic calibration did not change, and used so can carry out normal touch-control automatically.
The waterproof method of the capacitance type touch apparatus that the present invention discusses, utilize the variation of Trackpad upper tracer induction amount oscillogram to detect whether the water mark is arranged, not only method is easy, and be convenient to be provided with, under the different state of touching device, all can reach the purpose of waterproof, so occasions such as the household of being adapted at, office are applied.
Claims (10)
1. the waterproof method of a capacitance type touch apparatus, it may further comprise the steps:
Detect the oscillogram of described touching device induction amount on sweep trace;
Be cosine waveform if a certain moment begins to detect the oscillogram of described touching device induction amount, then need again or abandon calibration.
2. the method for claim 1, it is characterized in that: be cosine waveform if a certain moment is meant the oscillogram that detects the induction amount when contactor control device powers on after the calibration once, then need to recalibrate, till the oscillogram that detects the induction amount is steady state value.
3. method as claimed in claim 2 is characterized in that: if detecting above-mentioned oscillogram is tending towards a steady state value, then show anhydrous mark on the touching device.
4. method as claimed in claim 3 is characterized in that: it is to detect under the situation that does not have touch object touching touching device that described oscillogram is tending towards steady state value.
5. the method for claim 1, it is characterized in that: be cosine waveform if a certain moment is meant the oscillogram that detects calibration back induction amount in the contactor control device use, then make touching device stop calibration automatically till the oscillogram of induction amount is tending towards steady state value.
6. method as claimed in claim 5 is characterized in that: be tending towards steady state value if touching device detects the oscillogram of induction amount, then show anhydrous mark on the touching device.
7. as claim 5 or 6 described methods, it is characterized in that: described steady state value is zero.
8. the method for claim 1 is characterized in that: be cosine waveform if detect the oscillogram of described induction amount of a certain moment, then showing has the water mark on the touching device.
9. the method for claim 1, it is characterized in that: described detection waveform figure utilizes the principle of difference measurement capacitance to realize.
10. the method for claim 1, it is characterized in that: described touching device can be touch pad, touch-screen etc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102236114A CN101866252B (en) | 2010-07-09 | 2010-07-09 | Waterproof method of capacitance type touch apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102236114A CN101866252B (en) | 2010-07-09 | 2010-07-09 | Waterproof method of capacitance type touch apparatus |
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| CN101866252A true CN101866252A (en) | 2010-10-20 |
| CN101866252B CN101866252B (en) | 2012-07-25 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102221946A (en) * | 2011-03-25 | 2011-10-19 | 苏州瀚瑞微电子有限公司 | Method for indentifying water proofing of capacitive touch panel |
| CN102279679A (en) * | 2011-07-22 | 2011-12-14 | 苏州瀚瑞微电子有限公司 | Scanning configuration and positioning method of two-dimensional capacitive sensor |
| CN102467302A (en) * | 2010-11-05 | 2012-05-23 | 上海天马微电子有限公司 | Detection method for capacitance type touch screen to distinguish conducting liquid from fingers |
| CN103049159A (en) * | 2013-01-14 | 2013-04-17 | 成都西可科技有限公司 | Method for preventing water drop false triggering of capacitive touch screen |
| CN104252399A (en) * | 2013-06-27 | 2014-12-31 | 中兴通讯股份有限公司 | Calibration processing method and device of touch screen, touch screen and terminal |
| CN108092657A (en) * | 2018-01-04 | 2018-05-29 | 无锡市瀚为科技有限公司 | A kind of capacitor type touch switch and its triggering method of touch electrode structuring |
| CN109669574A (en) * | 2018-12-20 | 2019-04-23 | 芜湖宏景电子股份有限公司 | A kind of anti-misoperation control method of capacitance plate under high humidity environment |
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| CN102279679A (en) * | 2011-07-22 | 2011-12-14 | 苏州瀚瑞微电子有限公司 | Scanning configuration and positioning method of two-dimensional capacitive sensor |
| CN102279679B (en) * | 2011-07-22 | 2013-07-31 | 苏州瀚瑞微电子有限公司 | Scanning configuration and positioning method of two-dimensional capacitive sensor |
| CN103049159A (en) * | 2013-01-14 | 2013-04-17 | 成都西可科技有限公司 | Method for preventing water drop false triggering of capacitive touch screen |
| CN103049159B (en) * | 2013-01-14 | 2015-07-01 | 成都西可科技有限公司 | Method for preventing water drop false triggering of capacitive touch screen |
| CN104252399A (en) * | 2013-06-27 | 2014-12-31 | 中兴通讯股份有限公司 | Calibration processing method and device of touch screen, touch screen and terminal |
| WO2014205934A1 (en) * | 2013-06-27 | 2014-12-31 | 中兴通讯股份有限公司 | Touchscreen calibration processing method, apparatus, touchscreen, and terminal |
| CN108092657A (en) * | 2018-01-04 | 2018-05-29 | 无锡市瀚为科技有限公司 | A kind of capacitor type touch switch and its triggering method of touch electrode structuring |
| CN108092657B (en) * | 2018-01-04 | 2021-09-03 | 无锡市瀚为科技有限公司 | Capacitive touch switch with structured touch electrode and triggering method thereof |
| CN109669574A (en) * | 2018-12-20 | 2019-04-23 | 芜湖宏景电子股份有限公司 | A kind of anti-misoperation control method of capacitance plate under high humidity environment |
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| CN101866252B (en) | 2012-07-25 |
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