CN103324331A - Touch control sensing device and touch control sensing method thereof - Google Patents
Touch control sensing device and touch control sensing method thereof Download PDFInfo
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- CN103324331A CN103324331A CN201210083181XA CN201210083181A CN103324331A CN 103324331 A CN103324331 A CN 103324331A CN 201210083181X A CN201210083181X A CN 201210083181XA CN 201210083181 A CN201210083181 A CN 201210083181A CN 103324331 A CN103324331 A CN 103324331A
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Abstract
The invention discloses a touch control sensing device and a touch control sensing method thereof. The touch control sensing device includes a touch sensing circuit, a phase delay circuit and a judging circuit, wherein the phase delay circuit is electrically connected with the touch sensing circuit; the judging circuit is electrically connected with the touch sensing circuit and the phase delay circuit; the touch sensing circuit is provided with at least one electric conduction unit generating an AC touch signal when an energized conductor approaches; the AC touch signal is delayed by a preset phase by the phase delay circuit to obtain a delay signal; the judging circuit is used for comparing the signal intensity of the AC touch signal and the signal intensity of the delay signal with a threshold value respectively, so as to obtain the waveform overlapping time representing that the waveforms of the AC touch signal and the delay signal are overlapped and both the signal intensity of the AC touch signal and the signal intensity of the delay signal are larger than the threshold value; the judgment that the energized conductor approaches to or is contacted with the electric conduction unit of the touch sensing circuit can be confirmed by the judging circuit when the waveform overlapping time is longer than the preset time.
Description
Technical field
The present invention is relevant for the touch-control sensing device, particularly relevant for touch-control sensing device and the touch-control method for sensing thereof of the ac small signal of sensing human body.
Background technology
The development of touch technology is so that the touch-control interface of touch-control sensing device can replace the function of keyboard or the slide-mouse of traditional button, computer.Moreover, touch-control interface convenience and elasticity in the use also can more meet human intuition.
Traditional touch technology can be divided into resistance-type, condenser type, optical profile type or sound wave type etc. according to sensing principle.The method for sensing of resistance-type is the change in voltage when measuring electrode and being subject to pressing.Relatively, the capacitive sensing method is to measure electrode to be subject to the capacitance variation that electric current that human body touches generation causes.The touch technology of optical profile type and sound wave type is utilize to detect that light or sound wave are blocked or the mode that absorbs reaches the purpose of touch-control location.Yet, the space that traditional touch technology still makes further progress, the research and development of the touch technology of Novel state are still the problem that each manufacturer makes great efforts.
Summary of the invention
The embodiment of the invention provides a kind of touch-control sensing device and touch-control method for sensing thereof, lower of the environment that can be positioned at electrical equipment by the sensing people with faint ac small signal, reach the purpose of touch-control sensing.
The embodiment of the invention provides a kind of touch-control sensing device, and it comprises touch-induction circuit, phase-delay network and decision circuitry.Phase-delay network is electrically connected touch-induction circuit.Decision circuitry is electrically connected touch-induction circuit and phase-delay network.Touch-induction circuit has at least one conductive unit, and when the distance of energized conductor and conductive unit was within a preset distance, conductive unit produced one and exchanges the touching signal.Phase-delay network receives the interchange touching signal from touch-induction circuit, and will exchange preset phase of touching signal delay, and obtains inhibit signal.The signal intensity that decision circuitry will exchange the touching signal intensity of signal and inhibit signal respectively with threshold ratio, and obtaining accordingly waveform overlapping time, it is overlapping and all greater than time of threshold value that representative overlapping time of described waveform exchanges the waveform of touching signal and inhibit signal.When waveform overlapping time during greater than Preset Time, the conductive unit that decision circuitry is judged touch-induction circuit is by human body proximity or touch.Otherwise non-during greater than Preset Time when waveform overlapping time, the conductive unit that decision circuitry is judged touch-induction circuit is not by human body proximity or touch.
The embodiment of the invention provides a kind of touch-control method for sensing, be applicable to the touch-control sensing device, described touch-control sensing device comprises at least one conductive unit, when the distance of energized conductor and conductive unit is within preset distance, conductive unit produces and exchanges the touching signal, and described touch-control method for sensing may further comprise the steps.At first, obtain the interchange touching signal that conductive unit is exported.Then, will exchange preset phase of touching signal delay, and obtain inhibit signal.Then, with the signal intensity of the signal intensity that exchanges the touching signal and inhibit signal respectively with threshold ratio, and obtain accordingly waveform overlapping time, it is overlapping and all greater than time of threshold value that representative overlapping time of described waveform exchanges the waveform of touching signal and inhibit signal.Come again, judge that whether waveform overlapping time is greater than Preset Time.
The embodiment of the invention also provides a kind of touch-control sensing device, comprises touch-induction circuit and decision circuitry.Touch-induction circuit has at least one conductive unit, and when the distance of energized conductor and conductive unit was within preset distance, conductive unit produced one and exchanges the touching signal.Decision circuitry is electrically connected touch-induction circuit, and obtains to exchange the signal intensity of touching signal greater than the time of threshold value.When the signal intensity that exchanges the touching signal is during greater than Preset Time greater than time of threshold value, the conductive unit that decision circuitry is judged touch-induction circuit is by human body proximity or touch.Otherwise non-during greater than Preset Time greater than the time of threshold value when the signal intensity that exchanges the touching signal, the conductive unit that decision circuitry is judged touch-induction circuit is not by human body proximity or touch.
The embodiment of the invention also provides a kind of touch-control method for sensing, be applicable to the touch-control sensing device, described touch-control sensing device comprises at least one conductive unit, when the distance of energized conductor and conductive unit is within a preset distance, conductive unit produces one and exchanges the touching signal, and described touch-control method for sensing may further comprise the steps.At first, obtain the interchange touching signal that conductive unit is exported.Then, obtain to exchange the signal intensity of touching signal greater than the time of threshold value.Then, the signal intensity that judge to exchange the touching signal greater than time of threshold value whether greater than a Preset Time.
In sum, the touch-control sensing device that the embodiment of the invention provides and touch-control method for sensing thereof, the conductive unit that utilizes the touch-control sensing device to have be coupled lower of environment that human body is positioned at electrical equipment with faint ac small signal, reach the purpose of touch-control sensing.
For enabling further to understand feature of the present invention and technology contents, see also following about detailed description of the present invention and accompanying drawing, but these explanations and appended graphic the present invention that only are used for illustrating but not are done any restriction to claim scope of the present invention.
Description of drawings
Figure 1A is the circuit block diagram of the touch-control sensing device of the embodiment of the invention;
Figure 1B is the signal waveforms of the touch-control sensing device of the embodiment of the invention;
Fig. 2 is the circuit block diagram of the touch-control sensing device of the embodiment of the invention;
Fig. 3 is the process flow diagram of the touch-control method for sensing of the embodiment of the invention;
Fig. 4 A is the circuit block diagram of the touch-control sensing device of another embodiment of the present invention;
Fig. 4 B is the signal waveforms of the touch-control sensing device of another embodiment of the present invention;
Fig. 5 is the process flow diagram of the touch-control method for sensing of another embodiment of the present invention.
Wherein, description of reference numerals is as follows:
1,2,4: the touch-control sensing device;
12,22,42: touch-induction circuit;
14,24: phase-delay network;
16,26,46: decision circuitry;
121,221,421: conductive unit;
123,223,423: electric current turns voltage cell;
161,261,461: the first comparers;
163,263: the second comparers;
165,265,465: arithmetic logic unit;
28,48: signal amplification circuit;
267: with logical block;
269: counter;
TH: threshold value;
TC, TC ': exchange the touching signal;
TC1: inhibit signal;
CA, CB, CA ': comparison signal;
TR: output signal;
S310, S320, S330, S340, S510, S520, S530: steps flow chart.
Embodiment
Be positioned at as the people under the environment of electrical equipment, the people knows from experience with faint ac small signal, for example: in the time of around the people is positioned at the electronic installation that uses AC power, the electric conductivity of human body is so that the AC power of body-coupled electronic installation, and allows human body with faint ac small signal.When having external conductive object to exist, the ac small signal of human body also can directly or indirectly be coupled into this object.Especially when human body the closer to the time, the induction amount that is coupled into this object can be larger.If with the receiving end of this object when the touch-control sensing device, then can differentiate approaching or whether touching of human body.According to above-mentioned, the embodiment of the invention proposes a kind of touch technology of Novel state, lower of the environment that is positioned at electrical equipment by the sensing human body with faint ac small signal, reach the purpose of touch-control sensing.
(embodiment of touch-control sensing device and touch-control method for sensing thereof)
Please refer to Figure 1A, Figure 1A is the circuit block diagram of the touch-control sensing device of the embodiment of the invention.Touch-control sensing device 1 comprises touch-induction circuit 12, phase-delay network 14 and decision circuitry 16.Touch-induction circuit 12 has at least one conductive unit 121 and turns voltage cell 123 with electric current.In Figure 1A, conductive unit 121 take one as example, but therefore the present invention does not limit.Decision circuitry 16 comprises the first comparer 161, the second comparer 163 and arithmetic logic unit 165.
Phase-delay network 14 is electrically connected touch-induction circuit 14.Decision circuitry 16 is electrically connected touch-induction circuit 12 and phase-delay network 14.Electric current turns voltage cell 123 and is electrically connected between conductive unit 121 and the phase-delay network 14.The first comparer 161 is electrically connected electric current and turns voltage cell 123, the second comparers 163 electric connection phase-delay networks 14.Arithmetic logic unit 165 is electrically connected the first comparer 161 and the second comparer 163.
Please be simultaneously with reference to Figure 1A and Figure 1B, Figure 1B is the signal waveforms of the touch-control sensing device of the embodiment of the invention.The conductive unit 121 of touch-induction circuit 12 is in order to produce exchanging the touching signal, when energized conductor (for example: human body) with the distance of conductive unit 121 within a preset distance when (for example: 3 centimetres) this conductive unit produce described the interchange and touch signal.In the present embodiment, conductive unit 121 is in order to the interchange touching signal of generation current form.In other words, human body (for example: staff) near or when touching conductive unit 121, human body with faint ac small signal (coupling is from electrical equipment) can be coupled to conductive unit 121 and form electric current, described electric current namely exchanges the touching signal.Hence one can see that, because conductive unit 121 can be responded to by the mode of coupling the alternating current of human body, therefore human body or other conductors can touch conductive unit 121, as long as the distance of human body or other conductors and conductive unit 121 is within a preset distance, 121 of conductive units can produce enough induction currents and be passed to electric current and turn voltage cell 123.In the following description, only illustrate as an example of human body (or other conductors) touching conductive unit 121 example, when human body (or other conductors) when conductive unit 121 is to the preset distance, also be equivalent to the situation of human body touching conductive unit 121, its difference only is faradic size.
Electric current turns the interchange touching signal TC that voltage cell 123 will convert from the current signal of conductive unit 121 voltage form to, and the interchange touching signal TC of voltage form is sent to phase-delay network 14 and the first comparer 161.Interchange touching signal TC when the waveform W1 shown in Figure 1B is human body touching conductive unit 121, waveform W2 are the interchange touching signal TC of human body when not touching conductive unit 121.Interchange touching signal TC when in principle, human body is not touched conductive unit 121 is the noise that environment produces.Therefore, whether human body touches conductive unit 121, can make significantly interchange touching signal TC that obvious variation is arranged, for example: the notable difference of waveform W1 and waveform W2.
Simultaneously with reference to Figure 1A and Figure 1B, phase-delay network 14 receives the interchange touching signal TC from touch-induction circuit 12, and will exchange preset phase of touching signal TC delay, and obtains inhibit signal TC1 again.Inhibit signal TC1 when the inhibit signal TC1 when the waveform W3 shown in Figure 1B is human body contact conductive unit 121, waveform W4 are human body contact conductive unit 121.
Again simultaneously with reference to Figure 1A and Figure 1B, the signal intensity that decision circuitry 16 will exchange the signal intensity of touching signal TC and inhibit signal TC1 respectively with threshold value TH comparison, and obtain accordingly waveform overlapping time.Threshold value TH can utilize a bleeder circuit to produce, and threshold value TH can be adjustable.Adjustment threshold value TH can change decision circuitry 16 and judge whether human body touches the sensitivity of conductive unit 121.It is overlapping and all greater than time of threshold value TH that representative overlapping time of described waveform exchanges the waveform of touching signal TC and inhibit signal TC1.And obtain the waveform mode of overlapping time, will in follow-up explanation, at this generation waveform purpose of overlapping time be described first.When waveform overlapping time during greater than Preset Time, decision circuitry 16 judges that the conductive unit 121 of touch-induction circuits 12 is touched by human body.Otherwise non-during greater than Preset Time when waveform overlapping time, decision circuitry 16 judges that the conductive unit 121 of touch-induction circuits 12 is not touched by human body.The output signal TR that arithmetic logic unit 165 is exported can represent waveform overlapping time for the application circuit of rear class, to carry out the computing of touch-control correlation function.Next explanation obtains the waveform mode of overlapping time.
Again simultaneously with reference to Figure 1A and Figure 1B, in the situation that human body contact conductive unit 121, the first comparer 161 will turn from this electric current the interchange touching signal TC (waveform W1) and threshold value TH comparison of voltage cell 123, and export accordingly comparison signal W5, wherein when the signal intensity that exchanges touching signal TC (waveform W1) during greater than threshold value TH, the first comparison signal W5 is positioned at the first signal level, otherwise comparison signal W5 is positioned at the secondary signal level.The second comparer 163 compares inhibit signal TC1 (waveform W3) and threshold value TH, and export accordingly comparison signal W6, wherein when the signal intensity of inhibit signal TC1 (waveform W3) during greater than threshold value TH, comparison signal W6 is positioned at the first signal level, otherwise comparison signal W6 is positioned at the secondary signal level.Arithmetic logic unit 165 obtains waveform T1 overlapping time with comparison signal W5 and comparison signal W6 through logical operation, waveform W9 as shown in Figure 1B, wherein waveform T1 overlapping time is the time that comparison signal W5 and comparison signal W6 all are positioned at first signal level (high-voltage level).
Similarly, in the situation that human body does not contact conductive unit 121, the first comparer 161 will turn from this electric current the interchange touching signal TC (waveform W2) and threshold value TH comparison of voltage cell 123, and export accordingly comparison signal W7, wherein when the signal intensity that exchanges touching signal TC (waveform W2) during greater than threshold value TH, the first comparison signal W7 is positioned at the first signal level, otherwise comparison signal W7 is positioned at the secondary signal level.The second comparer 163 compares inhibit signal TC1 (waveform W4) and threshold value TH, and export accordingly comparison signal W8, wherein when the signal intensity of inhibit signal TC1 (waveform W4) during greater than threshold value TH, comparison signal W8 is positioned at the first signal level, otherwise comparison signal W8 is positioned at the secondary signal level.Arithmetic logic unit 165 obtains waveform T2 overlapping time with comparison signal W7 and comparison signal W8 through logical operation, waveform W10 as shown in Figure 1B, wherein waveform T2 overlapping time is the time that comparison signal W7 and comparison signal W8 all are positioned at the first signal level.By Figure 1B as can be known, the difference of waveform T1 overlapping time and waveform T2 overlapping time (or approach) conductive unit 121 of more easily judging whether human body touches.Can be set as shorter than waveform T1 overlapping time and longer than waveform T2 overlapping time in order to the Preset Time of (or the approach) conductive unit 121 of judging whether human body touches.
It is worth mentioning that, to exchange the foundation that the positive half period waveform of touching signal TC and inhibit signal TC1 makes a decision in Figure 1B, same principle can be applied to judges the negative half-cycle waveform that exchanges touching signal TC and inhibit signal TC1, this moment, threshold value TH may bear, but therefore the present invention does not limit.No matter be to judge positive half period or negative half-cycle, all be that signal intensity and the threshold value TH that will exchange touching signal TC and inhibit signal TC1 compares.
Please be simultaneously with reference to Figure 1A and Fig. 2, Fig. 2 is the circuit block diagram of the touch-control sensing device of the embodiment of the invention.Touch-control sensing device 2 comprises touch-induction circuit 22, phase-delay network 24, decision circuitry 26 and signal amplification circuit 28.Touch-induction circuit 22 has at least one conductive unit 221 and turns voltage cell 223 with electric current.Decision circuitry 26 comprises the first comparer 261, the second comparer 263 and arithmetic logic unit 265.Arithmetic logic unit 265 comprises and logical block 267 and counter 269.
Touch-control sensing device 2 among Fig. 2 is roughly the same with the touch-control sensing device 1 among Figure 1A, and its difference only is to have increased signal amplification circuit 28 and is by implementing with logical block 267 and counter 269 with arithmetic logic unit 265.Signal amplification circuit 28 is electrically connected electric current and turns voltage cell 223, phase-delay network 24 and the first comparer 261, turn the interchange touching signal TC of the voltage form of voltage cell 223 outputs in order to amplified current, and the interchange of the voltage form after will amplifying touching signal TC is sent to phase-delay network 24 and the first comparer 261.
Please be simultaneously with reference to Figure 1B and Fig. 2, be electrically connected the first comparer 261 and the second comparer 263 with logical block 267, in order to comparison signal CA and comparison signal CB are done logical and (Logic AND) computing, obtain accordingly overlapping waveform signal, described overlapping waveform signal is waveform W9, the W10 shown in Figure 1B.Counter 269 is electrically connected and logical blocks 267, is positioned at this first signal level (for example: the duration high-voltage level shown in Figure 1B) obtains waveform overlapping time (T1, T2) by calculating overlapping waveform signal (waveform W9, W10).For example: counter 269 can be counted the output enable time with logical block 267, and it is high level (High) that activation represents logic.Counter 269 also can begin by the high level (High) that obtains comparison signal CA to count the overlapping waveform signal (waveform W9, W10) of exporting with logical block 267.Otherwise, not having in activation (Low) situation with logical block 267, counter 269 is counting not.
Please be simultaneously with reference to Figure 1A, Figure 1B and Fig. 3, Fig. 3 is the process flow diagram of the touch-control method for sensing of the embodiment of the invention.The touch-control method for sensing of Fig. 3 is applicable to touch-control sensing device 1, and touch-control sensing device 1 comprises at least one conductive unit, and when the distance of energized conductor (for example human body) and conductive unit was within a preset distance, conductive unit produced and exchanges the touching signal.Described touch-control method for sensing may further comprise the steps.At first, in step S310, obtain the interchange touching signal that conductive unit 121 is exported.In S310, obtain after the step of the interchange touching signal that conductive unit 121 exports, more can comprise interchanges touching signal is done the signal amplification, for example utilize the described signal amplification circuit 28 of Fig. 2.
Then, in step S320, will exchange touching signal (waveform W1, W2) and postpone a preset phase, and obtain inhibit signal (waveform W3, W4).Then, in step S330, compare with threshold value TH respectively exchanging the signal intensity of touching signal and the signal intensity of inhibit signal, and obtaining accordingly waveform overlapping time (T1, T2), it is overlapping and all greater than time of threshold value TH that representative overlapping time of described waveform exchanges the waveform of touching signal and inhibit signal.Come again, in step S340, judge that whether waveform overlapping time is greater than Preset Time.In step S340, when waveform overlapping time during greater than Preset Time, judge that conductive unit is approached or touches by energized conductor.Otherwise, non-during greater than Preset Time when waveform overlapping time, judge that conductive unit is not approached or touches by energized conductor.After step S340 finishes, execution in step S310 again.
(another embodiment of touch-control sensing device and touch-control method for sensing thereof)
Please refer to Fig. 4 A, Fig. 4 A is the circuit block diagram of the touch-control sensing device of another embodiment of the present invention.The present embodiment explanation is under the mechanism of not utilizing phase delay, and simple judging with threshold value exchanges the touching signal.Touch-control sensing device 4 comprises touch-induction circuit 42, decision circuitry 46 and signal amplification circuit 48.Touch-induction circuit 42 has at least one conductive unit 421, and (for example: human body) when the distance of conductive unit is within a preset distance, conductive unit produces and exchanges the touching signal when energized conductor.Decision circuitry 46 comprises the first comparer 461 and arithmetic logic unit 465.
Refer again to Fig. 4 A, touch-induction circuit 42 exchanges the touching signal in order to produce.Electric current turns voltage cell 423 and is electrically connected conductive unit 421, and is electrically connected decision circuitry 46 by signal amplification circuit 48.If signal amplification circuit 48 is removed, electric current turns 423 of voltage cell and can be electrically connected between conductive unit 421 and the decision circuitry 46.Electric current turns the interchange touching signal TC that voltage cell 423 will convert from the current signal of conductive unit 421 voltage form to.Signal amplification circuit 48 turns the interchange touching signal TC of the voltage form of voltage cell 423 outputs in order to amplified current, and the interchange of the voltage form after will amplifying touching signal TC is sent to phase-delay network 48 and comparer 461.
Please be simultaneously with reference to Fig. 4 A and Fig. 4 B, Fig. 4 B is the signal waveforms of the touch-control sensing device of another embodiment of the present invention.The waveform W1 of Fig. 4 B is the interchange touch-control waveform that human body touches conductive unit 421, and waveform W2 is the interchange touch-control waveform that human body does not touch conductive unit 421.The first comparer 461 will exchange touching signal TC ' and compare with threshold value TH, and export accordingly comparison signal CA '.Shown in Fig. 4 B, when the signal intensity that exchanges touching signal TC ' (waveform W1, W2) during greater than threshold value TH, comparison signal CA ' is positioned at the first signal level, otherwise comparison signal is positioned at the secondary signal level, shown in waveform W5, the W7 of Fig. 4 B.Arithmetic logic unit 465 has the counter 269 of Fig. 2.Arithmetic logic unit 465 is positioned at the duration (T3, T4) of first signal level in order to calculate comparison signal CA ', the signal intensity that judge to exchange by this touching signal TC ' greater than time of threshold value TH whether greater than Preset Time.Described Preset Time can be designed as between time T 3 and T4.
Simultaneously with reference to Figure 1B and Fig. 4 B, time T 1 is about 4: 1 with the ratio of time T 2 again, and time T 3 is about 8: 5 with the ratio of time T 4.In other words, when touching, the larger representative human body of ratio follow the discriminating of non-touching (also approaching) state more obvious, if utilize the mechanism of phase delay may be able to improve whether the identification human body approaches or the sensitivity of touching conductive unit 121 (or conductive unit 421).Yet above-mentioned time T 1～T4 only is used for illustrating, is not to limit the present invention.
Please be simultaneously with reference to Fig. 4 A, Fig. 4 B and Fig. 5, Fig. 5 is the process flow diagram of the touch-control method for sensing of another embodiment of the present invention.The touch-control method for sensing of Fig. 5 is applicable to the touch-control sensing device 4 of Fig. 4 A.Touch-control sensing device 4 comprises at least one conductive unit 421, and described touch-control method for sensing may further comprise the steps.At first, in step S510, obtain the interchange touching signal (TC) that conductive unit 421 is exported.Then, in step S520, obtain to exchange the signal intensity of touching signal TC (or TC ') greater than the time of threshold value TH.Then, in step S530, signal TC (or TC ') intensity that judge to exchange the touching signal greater than time of threshold value TH whether greater than Preset Time.After step S530 finishes, can be at inferior execution in step S510.
(the possible effect of embodiment)
According to the embodiment of the invention, above-mentioned touch-control sensing device and touch-control method for sensing thereof, the little AC signal that can utilize conductive unit sensing human body to be coupled under the environment of electrical equipment judges whether human body approaches or the touching conductive unit.The mode of doing phase delay to exchanging the touching signal can make and improve the sensitivity of judging.Because exchanging the touching signal is AC signal, therefore, do logical operation for the positive half period or the negative half-cycle that exchange the touching signal, all can reach the mechanism of identical judgement.Also help couple signal amplification circuit between touch-induction circuit and the phase-delay network to follow-up logical operation.
The above only is embodiments of the invention, and it is not to limit to Patent right requirement scope of the present invention.
Claims (13)
1. a touch-control sensing device is characterized in that, comprising:
One touch-induction circuit has at least one conductive unit, and when the distance of an energized conductor and this conductive unit was within a preset distance, this conductive unit produced one and exchanges touching signal;
One phase-delay network is electrically connected this touch-induction circuit, receives this interchange touching signal from this touch-induction circuit, and should exchange touching signal delay one preset phase, and obtain an inhibit signal; And
One decision circuitry, be electrically connected this touch-induction circuit and this phase-delay network, with this signal intensity that exchanges the signal intensity of touching signal and this inhibit signal respectively with a threshold ratio, and obtaining accordingly waveform overlapping time, the waveform that this waveform represents this interchange touching signal and this inhibit signal overlapping time is overlapping and all greater than time of this threshold value;
Wherein, when this waveform overlapping time during greater than a Preset Time, this decision circuitry judges that this conductive unit of this touch-induction circuit is approached or touches by this energized conductor, non-during greater than this Preset Time when this waveform overlapping time, this decision circuitry judges that this conductive unit of this touch-induction circuit is not approached or touches by this energized conductor.
2. touch-control sensing device as claimed in claim 1 is characterized in that, this touch-induction circuit also comprises:
One electric current turns voltage cell, is electrically connected between this conductive unit and this phase-delay network, will convert from a current signal of this conductive unit this interchange touching signal of voltage form to.
3. touch-control sensing device as claimed in claim 2 is characterized in that, this decision circuitry also comprises:
One first comparer, be electrically connected this electric current and turn voltage cell, to turn this interchange touching signal of voltage cell and this threshold ratio from this electric current, and export accordingly one first comparison signal, wherein when this signal intensity that exchanges the touching signal during greater than this threshold value, this first comparison signal is positioned at a first signal level, otherwise this first comparison signal is positioned at a secondary signal level;
One second comparer, be electrically connected this phase-delay network, with this inhibit signal and this threshold ratio, and export accordingly one second comparison signal, wherein when the signal intensity of this inhibit signal during greater than this threshold value, this second comparison signal is positioned at this first signal level, otherwise this second comparison signal is positioned at a secondary signal level; And
One arithmetic logic unit, be electrically connected this first comparer and this second comparer, this first comparison signal and this second comparison signal are obtained this waveform overlapping time through logical operation, wherein this waveform overlapping time is the time that this first comparison signal and this second comparison signal all are positioned at this first signal level.
4. touch-control sensing device as claimed in claim 3 is characterized in that, also comprises:
One signal amplification circuit, be electrically connected this electric current and turn voltage cell, this phase-delay network and this first comparer, turn this interchange touching signal of the voltage form of voltage cell output in order to amplify this electric current, and this interchange touching signal of the voltage form after will amplifying is sent to this phase-delay network and this first comparer.
5. touch-control sensing device as claimed in claim 3 is characterized in that, this arithmetic logic unit also comprises:
One and logical block, be electrically connected this first comparer and this second comparer, in order to this first comparison signal and this second comparison signal are made logic and operation, obtain accordingly an overlapping waveform signal; And
One counter, be electrically connected should and logical block, obtain this waveform overlapping time by calculating this overlapping waveform signal bits in the duration of this first signal level.
6. touch-control method for sensing, it is characterized in that, be applicable to a touch-control sensing device, this touch-control sensing device comprises at least one conductive unit, when the distance of an energized conductor and this conductive unit is within a preset distance, this conductive unit produces one and exchanges the touching signal, and this touch-control method for sensing comprises:
Obtain the interchange touching signal that this conductive unit is exported;
Should exchange touching signal delay one preset phase, and obtain an inhibit signal;
With this signal intensity that exchanges the signal intensity of touching signal and this inhibit signal respectively with a threshold ratio, and obtaining accordingly waveform overlapping time, the waveform that this waveform represents this interchange touching signal and this inhibit signal overlapping time is overlapping and all greater than time of this threshold value; And
Judge that whether this waveform overlapping time is greater than a Preset Time.
7. touch-control method for sensing as claimed in claim 6 is characterized in that, also comprises:
When this waveform overlapping time during greater than this Preset Time, judge that this conductive unit is approached or touches by this energized conductor; And
Non-during greater than this Preset Time when this waveform overlapping time, judge that this conductive unit is not approached or touches by this energized conductor.
8. touch-control method for sensing as claimed in claim 6, it is characterized in that, after the step that obtains this interchange touching signal that this conductive unit exports, and before should exchanging this preset phase of touching signal delay, comprise that also signal is touched in this interchange does the signal amplification.
9. a touch-control sensing device is characterized in that, comprising:
One touch-induction circuit has at least one conductive unit, and when the distance of an energized conductor and this conductive unit was within a preset distance, this conductive unit produced one and exchanges touching signal; And
One decision circuitry is electrically connected this touch-induction circuit, obtains the signal intensity of this interchange touching signal greater than the time of a threshold value;
Wherein, when this signal intensity that exchanges the touching signal greater than time of this threshold value during greater than a Preset Time, this decision circuitry judges that this conductive unit of this touch-induction circuit is contacted by this energized conductor, non-during greater than this Preset Time greater than this threshold time when this signal intensity that exchanges the touching signal, this decision circuitry judges that this conductive unit of this touch-induction circuit is not contacted by this energized conductor.
10. touch-control sensing device as claimed in claim 9 is characterized in that, this touch-induction circuit also comprises:
One electric current turns voltage cell, is electrically connected between this conductive unit and this decision circuitry, will convert from a current signal of this conductive unit this interchange touching signal of voltage form to.
11. touch-control sensing device as claimed in claim 10 is characterized in that, this decision circuitry also comprises:
One comparer, be electrically connected this electric current and turn voltage cell, should exchange touching signal and this threshold ratio, and export accordingly a comparison signal, wherein when this signal intensity that exchanges the touching signal during greater than this threshold value, this comparison signal is positioned at a first signal level, otherwise this comparison signal is positioned at a secondary signal level; And
One arithmetic logic unit has a counter, is electrically connected this comparer, is positioned at the duration of this first signal level in order to calculate this comparison signal.
12. touch-control method for sensing, it is characterized in that, be applicable to a touch-control sensing device, this touch-control sensing device comprises at least one conductive unit, when the distance of an energized conductor and this conductive unit is within a preset distance, this conductive unit produces one and exchanges the touching signal, and this touch-control method for sensing comprises:
Obtain the interchange touching signal that this conductive unit is exported;
Obtain the signal intensity of this interchange touching signal greater than the time of a threshold value; And
The signal intensity of judging this interchange touching signal greater than time of this threshold value whether greater than a Preset Time.
13. touch-control method for sensing as claimed in claim 12, it is characterized in that, after the step that obtains this interchange touching signal that this conductive unit exports and before obtaining the step of signal intensity greater than the time of this threshold value of this interchanges touching signal, comprise that also signal is touched in this interchange does the signal amplification.
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| CN (1) | CN103324331A (en) |
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| CN107786193A (en) * | 2017-08-28 | 2018-03-09 | 珠海格力电器股份有限公司 | A kind of touch key-press detection method and device |
| CN110132458A (en) * | 2018-02-09 | 2019-08-16 | 北京钛方科技有限责任公司 | A kind of dynamic or Quasi dynamic force detecting device and method |
| CN110244880A (en) * | 2019-06-27 | 2019-09-17 | 京东方科技集团股份有限公司 | Touch-control circuit and display device |
| WO2019237323A1 (en) * | 2018-06-15 | 2019-12-19 | 深圳市艾博德科技股份有限公司 | Single-layer capacitive touch screen |
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| CN101046715A (en) * | 2006-03-28 | 2007-10-03 | Lg电子株式会社 | Mobile communications terminal having key input error prevention function and its method |
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| CN101025670A (en) * | 2006-02-17 | 2007-08-29 | 鸿富锦精密工业（深圳）有限公司 | Touch sensing device and its realizing method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107786193A (en) * | 2017-08-28 | 2018-03-09 | 珠海格力电器股份有限公司 | A kind of touch key-press detection method and device |
| CN110132458A (en) * | 2018-02-09 | 2019-08-16 | 北京钛方科技有限责任公司 | A kind of dynamic or Quasi dynamic force detecting device and method |
| WO2019237323A1 (en) * | 2018-06-15 | 2019-12-19 | 深圳市艾博德科技股份有限公司 | Single-layer capacitive touch screen |
| CN110244880A (en) * | 2019-06-27 | 2019-09-17 | 京东方科技集团股份有限公司 | Touch-control circuit and display device |
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Application publication date: 20130925 |