CN104716944A - Trigging judgement method of touch key and household appliance - Google Patents
Trigging judgement method of touch key and household appliance Download PDFInfo
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Abstract
The invention discloses a trigging judgement method which comprises the steps that S1: whether a capacitance basic value is larger than a first preset value is judged, if yes, the step S2 is started; S2: the capacitance real time value is detected, whether a variable between the capacitance real time value and the capacitance basic value is larger than a second preset value is judged, if not, the step S3 is started, and otherwise, the step S4 is started; S3: the variable is added on the capacitance basic value so as to obtain an updated capacitance basic value; S4: whether the variable is larger than a triggering value is judged, if yes, the step S6 is started, and otherwise, the step S5 is started; S5, a timing variable is reset; S6, the timing variable is timed, whether the timing variable is larger than a first preset time value is judged, if yes, the step S7 is started; S7, a touch key is normally triggered. According to the trigging judgement method, the capacitance basic value can be reinitialized according to the judgement of the capacitance basic value, and a false triggering condition of the touch key can be avoided according to the judgement of the variable. The invention further discloses a household appliance.
Description
Technical field
The present invention relates in household appliance technical field, more specifically, relate to a kind of triggering determination methods of touch key-press and a kind of household electrical appliance.
Background technology
The diversity of household electrical appliance, along with going deep into of paying close attention to Consumer's Experience, the control panel scheme of existing household electrical appliance commercially gradually adopts touch scheme, not only convenient but also attractive in appearance.And in current touch scheme, great majority have employed capacitance touch.
Above-mentioned touch scheme generally, at the acrylic board back side, first coats black ink, and carries out hollow out process to the font of display on black ink, is next coated with coloring grounding ink, so just can give prominence to font color; Finally add double faced adhesive tape, be bonded at above pcb board, the touching induction region on pcb board is consistent with the key area on acrylic board.Due to human contact to touch pad and acrylic board time, the inductance capacitance of the touching induction region on pcb board there occurs change, by the size of this change, can judge whether the finger of people is pressed.
But capacitance touch is owing to being affected by the external environment, as external environment impacts such as moisture, high/low-temperature impact and media variations, the capacitance leading button electric capacity changes, and easily occurs the situation of button malfunction and false triggering.
Summary of the invention
The present invention is intended at least to solve one of technical problem existed in prior art.For this reason, the present invention needs to provide a kind of triggering determination methods of touch key-press and a kind of household electrical appliance.
A triggering determination methods for touch key-press, comprises the following steps:
S1: the electric capacity fiducial value of this touch key-press of initialization, and judge whether this electric capacity fiducial value is greater than the first preset value, if not, continue to perform step S1, if so, enter step S2;
S2: the electric capacity instantaneous value detecting this touch key-press, judges whether the variable quantity between this electric capacity instantaneous value and this electric capacity fiducial value is greater than the second preset value, if not, enters step S3, if so, enter step S4;
S3: this variable quantity is superimposed upon this electric capacity fiducial value to obtain the electric capacity fiducial value after upgrading, and enters step S2;
S4: judge whether this variable quantity is greater than trigger value, this trigger value is greater than this second preset value, if so, enters step S6, if not, enters step S5;
S5: timing variable is reset;
S6: during to this timing variograph, judges whether this timing variable is greater than the first preset time value, if so, enters step S7, if not, enters step S1; And
S7: to this touch key-press triggered as normal.
The triggering determination methods of above-mentioned touch key-press is according to the judgement of the electric capacity fiducial value to touch key-press, electric capacity fiducial value can be reinitialized, and according to the judgement to the changing value between electric capacity instantaneous value and electric capacity fiducial value, can to button triggered as normal, avoid such as due to the situation when capacitance variation with temperature of button exists certain drift and to touch key-press false triggering.
In one embodiment, between step S6 and step S7, this triggering determination methods also comprises step S8: if this timing variable is greater than this first preset time value, judge whether this timing variable is less than the second preset time value, this second preset time value is greater than this first preset time value, if so, enters step S7, if not, step S3 is entered.
In one embodiment, between step S6 and step S4, this triggering determination methods also comprises step S9: judge whether this variable quantity is less than pre-set threshold value, this pre-set threshold value is greater than this trigger value, if so, enters step S6, if not, enters step S5.
A kind of household electrical appliance, comprise capacitance detecting portion, control part and enforcement division, this capacitance detecting portion comprises touch key-press, and this control part connects this enforcement division and this capacitance detecting portion.This capacitance detecting portion is for detecting the capacitance of this touch key-press.This control part is used for the electric capacity fiducial value of initialization touch key-press, and obtain this electric capacity fiducial value by this capacitance detecting portion, this control part is for judging whether this electric capacity fiducial value is greater than the first preset value, if not, this control part is used for reinitializing this electric capacity fiducial value, if so, this control part is used for the electric capacity instantaneous value being detected this touch key-press by this capacitance detecting portion, judges whether the variable quantity between this electric capacity instantaneous value and this electric capacity fiducial value is greater than the second preset value.If this variable quantity is not more than this second preset value, this control part is used for this variable quantity being superimposed upon this electric capacity fiducial value to obtain the electric capacity fiducial value after upgrading, if this variable quantity is greater than this second preset value, this control part is for judging whether this variable quantity is greater than trigger value, and this trigger value is greater than this second preset value.If this variable quantity is not more than trigger value, this control part is used for resetting timing variable; If this variable quantity is greater than trigger value, when this control part is used for this timing variograph, judge whether this timing variable is greater than the first preset time value.If this timing variable is greater than this first preset time value, this control part is for generation of triggered as normal signal; If this timing variable is not more than this first preset time value, this control part is for reinitializing the electric capacity fiducial value of this touch key-press.This enforcement division, according to this triggered as normal signal, controls this touch key-press triggered as normal to perform function corresponding to this touch key-press.
In one embodiment, if this timing variable is greater than this first preset time value, before this control part produces this triggered as normal signal, this control part is also for judging whether this timing variable is less than the second preset time value, and this second preset time value is greater than this first preset time value.If this timing variable is less than this second preset time value, this control part is for generation of this triggered as normal signal; If this timing variable is not less than this second preset time value, this control part is used for this variable quantity being superimposed upon this electric capacity fiducial value to obtain the electric capacity fiducial value after upgrading.
In one embodiment, this control part comprises handling part, judging part, scanner section and Analog to Digital Converter section, this handling part connects this judging part and this scanner section, and this Analog to Digital Converter section is connected between this scanner section and this capacitance detecting portion, and this judging part connects this enforcement division.The capacitance that this Analog to Digital Converter section is used for this capacitance detecting portion is detected is converted to digital quantity.This handling part obtains this digital quantity for controlling this scanner section from this Analog to Digital Converter section.This judging part is used for judging whether this electric capacity fiducial value is greater than the first preset value according to this digital quantity, judge whether this variable quantity is greater than this second preset value, judge whether this variable quantity is greater than this trigger value, judge whether this timing variable is greater than this first preset time value, judge whether this timing variable is less than this second preset time value, and produce this triggered as normal signal.
In one embodiment, this capacitance detecting portion comprises the panel, button ink layer, background color ink layer and the circuit board that connect successively.This button ink layer comprises the first body region and is formed in multiple first key zones of this first body region, and this first key zone each forms this touch key-press, is formed with the first gap between this first body region and the plurality of first key zone.
In one embodiment, this capacitance detecting portion also comprises electrodeposited coating, this electrodeposited coating is arranged between this panel and this button ink layer, this electrodeposited coating comprises the second body region and is formed in multiple second key zones of this second body region, this second key zone each and this first key zone one_to_one corresponding each also form this touch key-press jointly, be formed with the second gap between this second body region and the plurality of second key zone, this second gap is overlapping with this first gap.
In one embodiment, these household electrical appliance also comprise display part, and this display part connects this judging part, and this display part is used for according to this triggered as normal signal, shows the feature content corresponding with this touch key-press.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of execution mode, wherein:
Fig. 1 is the schematic flow sheet of the triggering determination methods of the touch key-press of better embodiment of the present invention;
Fig. 2 is the module diagram of the household electrical appliance of better embodiment of the present invention;
Fig. 3 is the front schematic view in the capacitance detecting portion of the household electrical appliance of better embodiment of the present invention;
Fig. 4 is the structural representation in the capacitance detecting portion of the household electrical appliance of better embodiment of the present invention;
Fig. 5 is the structural representation in the capacitance detecting portion of the household electrical appliance of another better embodiment of the present invention; And
Fig. 6 is the capacitance schematic diagram over time of the touch key-press of better embodiment of the present invention.
Embodiment
Be described below in detail embodiments of the present invention, the example of described execution mode is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the execution mode be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In describing the invention, it is to be appreciated that term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or the implicit quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more described features.In describing the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrically connected or can intercom mutually; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
Disclosing hereafter provides many different execution modes or example is used for realizing different structure of the present invention.Of the present invention open in order to simplify, hereinafter the parts of specific examples and setting are described.Certainly, they are only example, and object does not lie in restriction the present invention.In addition, the present invention can in different example repeat reference numerals and/or reference letter, this repetition is to simplify and clearly object, itself does not indicate discussed various execution mode and/or relation between setting.In addition, the various specific technique that the invention provides and the example of material, but those of ordinary skill in the art can recognize the application of other techniques and/or the use of other materials.
Incorporated by reference to Fig. 1, the triggering determination methods of the touch key-press that better embodiment of the present invention provides, comprises the following steps:
S1: the electric capacity fiducial value of this touch key-press of initialization, and judge whether this electric capacity fiducial value is greater than the first preset value, if not, continue to perform step S1, if so, enter step S2;
S2: the electric capacity instantaneous value detecting this touch key-press, judges whether the variable quantity between this electric capacity instantaneous value and this electric capacity fiducial value is greater than the second preset value, if not, enters step S3, if so, enter step S4;
S3: this variable quantity is superimposed upon this electric capacity fiducial value to obtain the electric capacity fiducial value after upgrading, and enters step S2;
S4: judge whether this variable quantity is greater than trigger value, this trigger value is greater than this second preset value, if so, enters step S6, if not, enters step S5;
S5: timing variable is reset;
S6: during to this timing variograph, judges whether this timing variable is greater than the first preset time value, if so, enters step S7, if not, enters step S1; And
S7: to this touch key-press triggered as normal.
In present embodiment, incorporated by reference to Fig. 2, above-mentioned triggering determination methods can be realized by household electrical appliance 100, and these household electrical appliance 100 can be the household electrical appliance such as microwave oven, refrigerator or electric rice cooker.In present embodiment, illustrate for microwave oven for household electrical appliance 100.
These household electrical appliance 100 comprise capacitance detecting portion 102, control part 104, enforcement division 106 and display part 108, and control part 104 connects enforcement division 106 and capacitance detecting portion 102.Incorporated by reference to Fig. 3, this capacitance detecting portion 102 comprises touch key-press 110.This control part 104 connects this enforcement division 106, this capacitance detecting portion 102 and this display part 108.This capacitance detecting portion 102 is for detecting the capacitance of this touch key-press 110.This display part 108 is for showing the feature content corresponding with this touch key-press 110.
This touch key-press 110 can be arranged on the outer surface of household electrical appliance 100 shell, touches to facilitate user.Please close Fig. 3 and 4, in present embodiment, illustrate as an example, the quantity of touch key-press 110 is 5, it is respectively " 10 seconds " button, " 1 point " button, " function " button, " beginning " button, and " cancellation " button.Accordingly, when touch key-press 110 is judged as triggered as normal, household electrical appliance 100 can perform corresponding function, such as, when " within 10 seconds, " when button is judged as triggered as normal, household electrical appliance 100 can perform the function to increasing by 10 seconds heating time; And for example, when " " when button is judged as triggered as normal, household electrical appliances device 100 can perform cancels the function etc. of current operation, such as, cancel the heating operation of microwave oven in cancellation.
The touch key-press 110 of present embodiment has mirror effect.Particularly, this capacitance detecting portion 102 comprises panel 112, electrodeposited coating 114, button ink layer 116, background color ink layer 118 and circuit board 120.This panel 112, electrodeposited coating 114, button ink layer 116, background color ink layer 118 and circuit board 120 connect successively, namely along household electrical appliance 100 externally to internal direction, this electrodeposited coating 114 is arranged on the inner side of this panel 112, this button ink layer 116 is arranged on the inner side of electrodeposited coating 114, this background color ink layer 118 is arranged on the inner side of button ink layer 116, and this circuit board 120 is arranged on the inner side of this background color ink layer 118.
The button module that panel 112, electrodeposited coating 114, button ink layer 116 and background color ink layer 118 are formed is bonded on circuit board 120 by double faced adhesive tape 122.Under the requirement of double faced adhesive tape 122 can be joined: colloid viscosity is strong, affect change by high/low temperature little, will insulate non-conductive simultaneously, as used gum cotton, TL1440 etc.
This panel 112 can be acrylic panel, acrylic board (as base material PC1.0) as thick in 1mm.
This electrodeposited coating 114 is arranged between this panel 112 and this button ink layer 116.This electrodeposited coating 114 comprises the second body region 124 and is formed in 5 the second key zones 126 of this second body region 124.The second gap 128 is formed between this second body region 124 and these 5 the second key zones 126.
This button ink layer 116 comprises the first body region 130 and is formed in 5 the first key zones 132 of this first body region 130.This second key zone 126 each also forms a touch key-press 110 jointly with this first key zone 132 one_to_one corresponding each.The first gap 134 is formed between this first body region 130 and the plurality of first key zone 132.First gap 134 is overlapping with the second gap 128.
In present embodiment, this first gap 134 and the second gap 128 are the concentric circles of hollow out.Be appreciated that in other embodiments, the first gap 134 and the second gap 128 are not limited to circle, can be square, oval grade for other shape; The quantity of the first key zone 132 and the second key zone 126 is equal with the quantity of touch key-press 110, but this quantity is not limited to 5, also can be key zone 132,126 and the touch key-press 110 of other quantity.
Circuit board 120 can select pcb board as thick in 0.8mm, and ratio panels 112 is slightly thin.Circuit board 120 has touching induction region, such as capacitance sensor.
The manufacture craft in capacitance detecting portion 102 can be joined as follows: at acrylic board 112 back side, is first coated with last layer plating ink, becomes electrodeposited coating 114.Because electrodeposited coating 114 is transparent, therefore without the need to hollow out, but need centered by the display font of key area, covering single key area is radius, electrodeposited coating 114 is carried out to the hollow out segmentation of concentric-ring pattern, first button 110 of top as shown in Figure 4, electrodeposited coating dash area is hollow out concentric circles (i.e. the second gap 128).
Then, on the basis of electrodeposited coating 114, black ink is coated or gradual change ink (realizing background colour is black or gradient color effect) becomes button ink layer 116.Due to the color of background color font will be shown, therefore on black ink or gradual change ink, hollow out process is carried out to the font that will show, simultaneously centered by the display font of key area, covering single key area is radius, to black ink or gradual change ink, carry out the hollow out segmentation of concentric-ring pattern, first button 110 of top as shown in Figure 4, black ink or gradual change ink dash area are hollow out concentric circles (i.e. the first gap 134), and the hollow out concentric circles of button ink layer 116 is overlapping with the hollow out concentric circles of electrodeposited coating 114.
Following painting coloring grounding ink becomes background color ink layer 118.So just font color can be given prominence to; Because background color ink is generally light, therefore the content of its carbon contained is less, also less on the impact of environment.According to practical situations, can carry out or not carry out similar concentric circles segmentation.
Finally add non-conductive double faced adhesive tape 122, be bonded at above pcb board 120, the touching induction region on pcb board 120 is corresponding with the key area on acrylic board 112.The positive effect figure in the capacitance detecting portion 102 of final formation, as shown in Figure 3.Again because Fig. 3 is structural representation, therefore the mirror effect of touch key-press 110 cannot be shown.
The effect of hollow out segmentation concentric circles (the first gap and the second gap): because touching induction region black ink carbon content is higher, external environment change can make its conductivity that uncontrollable change occurs, thus can produce larger impact to the electric capacity of its key area.When temperature is low time, particularly less than 0 degree, the good black ink of original insulation degree and background color ink, all present certain conductivity, make buttons all in capacitance detecting portion 102, all only become a button, the acrylic scheme particularly with mirror effect, because it has been coated with again the cause of one deck electrodeposited coating 114 between black ink and acrylic board, make to touch effect extreme difference.
Hollow out segmentation concentric circles is exactly the part (the second key zone 126) of key area and overall electrodeposited coating 114 (the second body region 124) are physically separated completely in electrodeposited coating 114, since the reliability of electrodeposited coating 114 insulation degree when variations in temperature cannot be ensured, just completely cut off on physical route; In button ink layer 116, the key area (the first key zone 132) of display font and overall ink (the first body region 130) are split physically, the impact between different key can be reduced like this, thus improve touch effect.
Be appreciated that in other embodiments, touch key-press 110 also can not have mirror effect.Particularly, incorporated by reference to Fig. 5, other execution mode provides a kind of capacitance detecting portion 200.This capacitance detecting portion 200 eliminates electrodeposited coating, and capacitance detecting portion 200 comprises panel 202, button ink layer 204, background color ink layer 206 and circuit board 208.This panel 202, button ink layer 204, background color ink layer 206 and circuit board 208 connect successively, namely along household electrical appliance externally to internal direction, this button ink layer 204 is arranged on the inner side of panel 202, this background color ink layer 206 is arranged on the inner side of button ink layer 204, and this circuit board 208 is arranged on the inner side of this background color ink layer 206.The button module that panel 202, button ink layer 204 and background color ink layer 206 are formed is bonded on circuit board 208 by double faced adhesive tape 210.Under the requirement of double faced adhesive tape 210 can be joined: colloid viscosity is strong, affect change by high/low temperature little, will insulate non-conductive simultaneously, as used gum cotton, TL1440 etc.
This panel 202 can be acrylic panel, acrylic board (as base material PC1.0) as thick in 1mm.
This button ink layer 204 comprises the first body region 212 and is formed in 5 the first key zones 214 of this first body region 212, this first key zone 214 each forms this touch key-press, is formed with the first gap 216 between this first body region 212 and these 5 the first key zones 214.
This first gap 216 is the concentric circles of hollow out.Being appreciated that the first gap 216 is not limited to circle, can be square, oval grade for other shape; The quantity of the first key zone 214 is equal with the quantity of touch key-press, but this quantity is not limited to 5, also can be key zone 214 and the touch key-press of other quantity.Circuit board 208 can select pcb board as thick in 0.8mm, and ratio panels 202 is slightly thin.
The manufacture craft in capacitance detecting portion 200 can be joined as follows: similar to the touch key-press 110 being manufactured with mirror effect, but simpler than it, owing to having lacked electrodeposited coating, splits so only need carry out above-mentioned hollow out concentric circles at black ink or gradual change ink.As shown in Figure 5, black ink or gradual change ink dash area are hollow out concentric circles, i.e. the first gap 216.Shown in positive effect figure and the Fig. 3 in the capacitance detecting portion 200 of final formation, the positive effect figure in capacitance detecting portion 102 is similar.
This control part 104 comprises handling part 136, judging part 138, scanner section 140 and Analog to Digital Converter section 142 (A/D converter section), and this handling part 136 connects this judging part 138 and this scanner section 140.This handling part 136 can be such as central processing unit (CPU).This Analog to Digital Converter section 142 is connected between this scanner section 140 and this capacitance detecting portion 102, and this judging part 138 connects this enforcement division 106 and display part 108.
This Analog to Digital Converter section 142 is converted to digital quantity for the capacitance detected in this capacitance detecting portion 102.This handling part 136 obtains this digital quantity for controlling this scanner section 140 from this Analog to Digital Converter section 142.Such as, handling part 136 starts scanner section 140, is fixed the electric capacity scanning of time to obtain digital quantity corresponding to button capacitance.
Incorporated by reference to Fig. 6, in figure 6, capacitance is the value after digitlization, and solid line is electric capacity fiducial value, and chain-dotted line is electric capacity instantaneous value.In step sl, the electric capacity fiducial value of this handling part 136 initialization touch key-press 110, and obtain this electric capacity fiducial value by this capacitance detecting portion 102.This judging part 138 is for judging whether this electric capacity fiducial value is greater than the first preset value, and if not, this handling part 136 is for reinitializing this electric capacity fiducial value.
In present embodiment, the electric capacity fiducial value after initialization is such as 1000, as shown in the O point of Fig. 6.First preset value can be set to 500.If judging part 138 judges that electric capacity fiducial value is less than or equal to 500, then should reinitialize electric capacity fiducial value.In other embodiments, step S1 also can comprise, if repeatedly after initialization electric capacity fiducial value be still not more than the first preset value, then handling part 136 can be made mistakes by reminding user, and such as handling part 136 can control household electrical appliance 100 generation sound and the prompting of/light.Initialization can be solved like this when pinpointing the problems, not reinitialize, or there is no the problem pointing out corresponding mistake.If this judging part 138 judges that electric capacity fiducial value is greater than the first preset value, then enter step S2.
In step s 2, particularly, after initialization, arrive each sweep time (as every 0.5 millisecond of run-down), handling part 136 gated sweep portion 140 starts Analog to Digital Converter section 142, the electric capacity instantaneous value (analog quantity) passed back in capacitance detecting portion 102 is converted to digital quantity, and is kept at inside the storage part 144 that is connected with handling part 136.Judging part 138 judges whether the variable quantity between this electric capacity instantaneous value and this electric capacity fiducial value is greater than the second preset value.In this step S2, the second preset value can be set to 20.During scanning, the electric capacity instantaneous value obtaining A point is 1015, and the variable quantity comparing the electric capacity fiducial value 1000 after initialization is 15.This variable quantity may by external environment (as temperature) slowly change time caused, instead of touch key-press 110 is touched by user and causes.
If this variable quantity is not more than this second preset value, in step s3, this handling part 136 is for being superimposed upon this electric capacity fiducial value to obtain the electric capacity fiducial value after upgrading by this variable quantity.In present embodiment, variable quantity is 15 be less than the second preset value 20, therefore variable quantity 15 is superimposed in electric capacity fiducial value 1000, obtains the electric capacity fiducial value 1015 after upgrading.Thus, caused when can think that this variable quantity is slowly changed by external environment, as the A point in Fig. 6, the electric capacity instantaneous value of button has changed 15, and this is that electric capacity fiducial value will upgrade, namely the capacitance change of button 110 is added, so just can solve, because capacitance variation with temperature exists certain drift, when the temperature increases, the fiducial value of the electric capacity of button 110 does not carry out correcting and upgrading, and can cause the situation of touch key-press 110 false triggering.
After renewal completes, enter step S2, handling part 136 can wait for the arrival of next sweep time, continues the electric capacity instantaneous value detecting touch key-press 110.
When variable quantity is greater than the second preset value, this variable quantity may be touched by user that touch key-press 110 causes, therefore in step s 4 which, this judging part 138 judges whether this variable quantity is greater than trigger value, and this trigger value is greater than this second preset value.Illustrate as an example, trigger value can be set to 100, is greater than the second preset value 20.
Further, in present embodiment, between step S6 and step S4, this triggering determination methods also comprises step S9: judge whether this variable quantity is less than pre-set threshold value, this pre-set threshold value is greater than this trigger value, if so, enters step S6, if not, enters step S5.
In step s 9, judging part 138 judges whether this variable quantity is less than pre-set threshold value.Pre-set threshold value can be set to 500, is greater than trigger value 100.Variable quantity also may cause due to very large interference.Therefore, in time having very large interference to come in, as the B point in Fig. 6, because this triggering determination methods sets pre-set threshold value, so when judging part 138 judges that the variable quantity of capacitance is more than or equal to pre-set limit 500, this judging part 138 will mask this interference signal, avoids the false triggering of touch key-press 110.
In step s 5, because variable quantity is not touch caused change by user, so, for the timing variable representing the variable quantity duration, handling part 136 does clear operation, and waits for the arrival of next sweep time, and timing variable can be initialized as zero in step sl.
In step s 6, when variable quantity is greater than trigger value and is less than pre-set threshold value, this represents variable quantity is probably that user touches caused change, as the C point in Fig. 6.Now, when handling part 136 starts timing variograph, such as, often cross 1 time of day, handling part 136 adds 1 at timing variable.In the process of timing, variable quantity may become due to some interference and be less than trigger value, and in this case, handling part 136 pairs of timing variablees do clear operation.If variable quantity be greater than trigger value and be less than pre-set threshold value situation continue, handling part 136 constantly adds 1 to timing variable, and judging part 138 judges whether timing variable is greater than the first preset time value M.
In the step s 7, when judging part 138 judges that the electric capacity instantaneous value (the C point in Fig. 6, electric capacity instantaneous value is 300) of button 110 is greater than trigger value 100 and is less than pre-set threshold value 500, the variable of timing is simultaneously greater than the first preset time value M, as 50 milliseconds.Now, judging part 138 produces triggered as normal signal.Enforcement division 106, according to this triggered as normal signal, controls this touch key-press 110 triggered as normal to perform the function of this touch key-press 110 correspondence, and this display part 108, for according to this triggered as normal signal, shows the feature content corresponding with this touch key-press 110.
Such as, when judging part 138 judges " 10 " button second 110 by user's normal touch, judging part 138 produces the triggered as normal signal representing and increase by 10 seconds heating time, enforcement division 106 increases the triggered as normal signal of 10 seconds heating time according to this expression, control the firing equipment in microwave oven, as inverter and magnetron increase the operating time of 10 seconds.Display part 108 increases the triggered as normal signal of 10 seconds heating time according to this expression, and the time of current display increases by 10 seconds, such as, from display " 10 " becoming display " 20 " etc.
In addition, between step S6 and step S7, this triggering determination methods also comprises step S8: if this timing variable is greater than this first preset time value, judge whether this timing variable is less than the second preset time value, this second preset time value is greater than this first preset time value, if so, enters step S7, if not, step S3 is entered.
In step S8, judging part 138 will continue the duration (timing variable) detecting button triggering.If timing variable has exceeded the second preset time value S arranged (consider the application of long button, this S value generally can establish length a bit, as 1 minute).Namely the D point in Fig. 6, then explanation is variable quantity is caused by the large change of external environment, but not the button operation of staff.Now, handling part 136 needs electric capacity fiducial value to upgrade, and namely adds the variable quantity of button electric capacity, and waits for the arrival of a next sweep time.Can solve like this when change sharply occurs temperature, can there is the change of similar normal waveform in the capacitance of button, if do not have Anti-interference algorithm, there will be the Problem-Error of button malfunction.
E point in Fig. 6 ~ electric capacity instantaneous value of F point and the waveform of electric capacity fiducial value, the variable quantity of button capacitance is 200, and the duration is greater than the first preset time value M and is less than the second preset time value S, judging part is judged as button triggered as normal, produces triggered as normal signal.Be appreciated that, the first above-mentioned preset value, the second preset value, trigger value, pre-set threshold value, the first preset time value and the second preset time value all can be stored in advance in storage part 144, and when method performs, can by handling part 136 grade other component invocation, renewal etc.; And in method implementation produce digitized capacitance and also can exist in storage part 144, for handling part 136 grade other component invocation, renewal etc.
In sum, the triggering determination methods of above-mentioned touch key-press is according to the judgement of the electric capacity fiducial value to touch key-press 110, electric capacity fiducial value can be reinitialized, and according to the judgement to the changing value between electric capacity instantaneous value and electric capacity fiducial value, can to button 110 triggered as normal, avoid such as due to the situation when capacitance variation with temperature of button 110 exists certain drift and to touch key-press 110 false triggering.
In the description of this specification, specific features, structure, material or feature that the description of reference term " execution mode ", " some execution modes ", " exemplary embodiment ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with described execution mode or example are contained at least one execution mode of the present invention or example.In this manual, identical execution mode or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more execution mode or example.
Although illustrate and describe embodiments of the present invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these execution modes when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.
Claims (9)
1. a triggering determination methods for touch key-press, is characterized in that, comprise the following steps:
S1: the electric capacity fiducial value of this touch key-press of initialization, and judge whether this electric capacity fiducial value is greater than the first preset value, if not, continue to perform step S1, if so, enter step S2;
S2: the electric capacity instantaneous value detecting this touch key-press, judges whether the variable quantity between this electric capacity instantaneous value and this electric capacity fiducial value is greater than the second preset value, if not, enters step S3, if so, enter step S4;
S3: this variable quantity is superimposed upon this electric capacity fiducial value to obtain the electric capacity fiducial value after upgrading, and enters step S2;
S4: judge whether this variable quantity is greater than trigger value, this trigger value is greater than this second preset value, if so, enters step S6, if not, enters step S5;
S5: timing variable is reset;
S6: during to this timing variograph, judges whether this timing variable is greater than the first preset time value, if so, enters step S7, if not, enters step S1; And
S7: to this touch key-press triggered as normal.
2. trigger determination methods as claimed in claim 1, it is characterized in that, between step S6 and step S7, this triggering determination methods also comprises step S8: if this timing variable is greater than this first preset time value, and judge whether this timing variable is less than the second preset time value, this second preset time value is greater than this first preset time value, if, enter step S7, if not, enter step S3.
3. trigger determination methods as claimed in claim 1, it is characterized in that, between step S6 and step S4, this triggering determination methods also comprises step S9: judge whether this variable quantity is less than pre-set threshold value, this pre-set threshold value is greater than this trigger value, if, enter step S6, if not, enter step S5.
4. household electrical appliance, is characterized in that, comprise capacitance detecting portion, control part and enforcement division, and this capacitance detecting portion comprises touch key-press, and this control part connects this enforcement division and this capacitance detecting portion;
This capacitance detecting portion is for detecting the capacitance of this touch key-press;
This control part is used for the electric capacity fiducial value of initialization touch key-press, and obtain this electric capacity fiducial value by this capacitance detecting portion, this control part is for judging whether this electric capacity fiducial value is greater than the first preset value, if not, this control part is used for reinitializing this electric capacity fiducial value, if so, this control part is used for the electric capacity instantaneous value being detected this touch key-press by this capacitance detecting portion, judges whether the variable quantity between this electric capacity instantaneous value and this electric capacity fiducial value is greater than the second preset value;
If this variable quantity is not more than this second preset value, this control part is used for this variable quantity being superimposed upon this electric capacity fiducial value to obtain the electric capacity fiducial value after upgrading, if this variable quantity is greater than this second preset value, this control part is for judging whether this variable quantity is greater than trigger value, and this trigger value is greater than this second preset value;
If this variable quantity is not more than trigger value, this control part is used for resetting timing variable; If this variable quantity is greater than trigger value, when this control part is used for this timing variograph, and judge whether this timing variable is greater than the first preset time value;
If this timing variable is greater than this first preset time value, this control part is for generation of triggered as normal signal; If this timing variable is not more than this first preset time value, this control part is for reinitializing the electric capacity fiducial value of this touch key-press;
This enforcement division, according to this triggered as normal signal, controls this touch key-press triggered as normal to perform function corresponding to this touch key-press.
5. household electrical appliance as claimed in claim 4, it is characterized in that, if this timing variable is greater than this first preset time value, before this control part produces this triggered as normal signal, this control part is also for judging whether this timing variable is less than the second preset time value, and this second preset time value is greater than this first preset time value;
If this timing variable is less than this second preset time value, this control part is for generation of this triggered as normal signal; If this timing variable is not less than this second preset time value, this control part is used for this variable quantity being superimposed upon this electric capacity fiducial value to obtain the electric capacity fiducial value after upgrading.
6. household electrical appliance as claimed in claim 5, it is characterized in that, this control part comprises handling part, judging part, scanner section and Analog to Digital Converter section, this handling part connects this judging part and this scanner section, this Analog to Digital Converter section is connected between this scanner section and this capacitance detecting portion, and this judging part connects this enforcement division;
The capacitance that this Analog to Digital Converter section is used for this capacitance detecting portion is detected is converted to digital quantity;
This handling part obtains this digital quantity for controlling this scanner section from this Analog to Digital Converter section;
This judging part is used for judging whether this electric capacity fiducial value is greater than the first preset value according to this digital quantity, judge whether this variable quantity is greater than this second preset value, judge whether this variable quantity is greater than this trigger value, judge whether this timing variable is greater than this first preset time value, judge whether this timing variable is less than this second preset time value, and produce this triggered as normal signal.
7. household electrical appliance as claimed in claim 4, it is characterized in that, this capacitance detecting portion comprises the panel, button ink layer, background color ink layer and the circuit board that connect successively;
This button ink layer comprises the first body region and is formed in multiple first key zones of this first body region, and this first key zone each forms this touch key-press, is formed with the first gap between this first body region and the plurality of first key zone.
8. household electrical appliance as claimed in claim 7, it is characterized in that, this capacitance detecting portion also comprises electrodeposited coating, this electrodeposited coating is arranged between this panel and this button ink layer, this electrodeposited coating comprises the second body region and is formed in multiple second key zones of this second body region, this second key zone each and this first key zone one_to_one corresponding each also form this touch key-press jointly, be formed with the second gap between this second body region and the plurality of second key zone, this second gap is overlapping with this first gap.
9. household electrical appliance as claimed in claim 6, it is characterized in that, these household electrical appliance also comprise display part, and this display part connects this judging part, and this display part is used for according to this triggered as normal signal, shows the feature content corresponding with this touch key-press.
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| CN201510145147.4A CN104716944B (en) | 2015-03-30 | 2015-03-30 | The triggering judgment method and household electrical appliance of touch key-press |
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| CN201510145147.4A CN104716944B (en) | 2015-03-30 | 2015-03-30 | The triggering judgment method and household electrical appliance of touch key-press |
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