CN104423753B - A kind of capacitance touch detection method, device and mobile terminal - Google Patents
A kind of capacitance touch detection method, device and mobile terminal Download PDFInfo
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- CN104423753B CN104423753B CN201310410963.4A CN201310410963A CN104423753B CN 104423753 B CN104423753 B CN 104423753B CN 201310410963 A CN201310410963 A CN 201310410963A CN 104423753 B CN104423753 B CN 104423753B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
Abstract
The present invention is applied to technical field of mobile terminals, there is provided a kind of capacitance touch detection method, device and mobile terminal, including：When the capacitive touch screen is in touch condition, according to the capacitance that the touch condition model for pre-building, the last electric capacity baseline value and real-time detection preserved under touch condition are arrived, the electric capacity baseline value under touch condition is generated in real time；When the capacitive touch screen is in non-tactile state, according to the non-tactile state model for pre-building, the last electric capacity baseline value preserved under non-tactile state and the actually detected capacitance for arriving, generation is in the non-electric capacity baseline value under touch condition in real time；When the capacitive touch screen is in touch condition, according to electric capacity baseline value of the generation under touch condition in real time, the position of user touch point is detected；When the capacitive touch screen is in non-tactile state, according to generation in real time in the non-electric capacity baseline value under touch condition, the position of user touch point is detected.
Description
Technical field
The invention belongs to technical field of mobile terminals, more particularly to a kind of capacitance touch detection method, device and movement
Terminal.
Background technology
With becoming increasingly popular for capacitive touch screen mobile terminal, increasing user is by capacitive touch screen to moving
Dynamic terminal is operated, and is the facility that life brings to enjoy capacitive touch screen.At the same time, with capacitive touch screen
Mobile terminal gradually replaces traditional keyboard-type mobile terminal at present by the advantage such as its workable and interface is novel, into
For the market mainstream.
However, what capacitance touch detection utilized is that touch of the capacitance variations that whether touch of finger to judge finger is dynamic
Make.Traditional detection mode is by the way of reference capacitance baseline (electric capacity during no touch), that is, fixed electric capacity baseline, and
Actual reference capacitance baseline can change with factors such as environment temperature, humidity, the clean levels of touch surface in itself, and this change has
When can cause touch action can not be correctly detected out during user's use.For purposes of illustration only, with the change of external environment
External environment humidity it is too high as a example by, capacitive touch screen is interfered, and can't detect the position of user touch point, cause use
Family cannot operate to the capacitive touch screen.
The content of the invention
The purpose of the embodiment of the present invention is to provide a kind of capacitive touch screen processing method, it is intended to solve existing condenser type
Touch-screen is interfered and can't detect the position of user touch point, causes what user cannot be operated to capacitive touch screen to ask
Topic.
The embodiment of the present invention is achieved in that a kind of capacitance touch detection method, including：
The touch-control state of capacitive touch screen is obtained, the touch-control state includes touch condition and non-tactile state；
When the capacitive touch screen is in touch condition, existed according to the touch condition model, last time that pre-build
The capacitance that the electric capacity baseline value and real-time detection preserved under touch condition are arrived, generates the electric capacity base under touch condition in real time
Line value；
When the capacitive touch screen is in non-tactile state, according to the non-tactile state model for pre-building, upper one
The secondary electric capacity baseline value preserved under non-tactile state and the actually detected capacitance for arriving, generation in real time is non-in touch condition
Under electric capacity baseline value；
When the capacitive touch screen is in touch condition, according to electric capacity baseline of the generation under touch condition in real time
Value, detects the position of user touch point；
When the capacitive touch screen is in non-tactile state, according to generation in real time in the non-electric capacity under touch condition
Baseline value, detects the position of user touch point.
The another object of the embodiment of the present invention is to provide a kind of capacitive touch screen device, including：
Acquiring unit, the touch-control state for obtaining capacitive touch screen, the touch-control state includes touch condition and non-
Touch condition；
First generation unit, for when the capacitive touch screen is in touch condition, according to the touch for pre-building
The capacitance that state model, the last electric capacity baseline value and real-time detection preserved under touch condition are arrived, in real time generation exists
Electric capacity baseline value under touch condition；
Second generation unit, it is non-according to what is pre-build for when the capacitive touch screen is in non-tactile state
Touch condition model, the last electric capacity baseline value preserved under non-tactile state and the actually detected capacitance for arriving, in real time
Generation is in the non-electric capacity baseline value under touch condition；
First detection unit, for when the capacitive touch screen is in touch condition, being touched according to generation in real time
Electric capacity baseline value under state, detects the position of user touch point；
Second detection unit, for when the capacitive touch screen is in non-tactile state, according to generation in real time non-
Electric capacity baseline value under touch condition, detects the position of user touch point.
In embodiments of the present invention, when the capacitive touch screen is in touch condition, touched according to generation in real time
Electric capacity baseline value under state, detects the position of user touch point；When the capacitive touch screen is in non-tactile state, root
Generation detects the position of user touch point in the non-electric capacity baseline value under touch condition when factually, solves due to condenser type
Touch-screen is interfered, the problem for causing user to be operated to the capacitive touch screen, to ensure capacitive touch screen
The position of user touch point is detected, so as to improve user's operating efficiency.
Brief description of the drawings
Fig. 1 is that capacitance touch detection method provided in an embodiment of the present invention realizes flow chart；
Fig. 2 is preferably schematic diagram in actual applications provided in an embodiment of the present invention；
Fig. 3 is the structured flowchart of capacitive touch screen device provided in an embodiment of the present invention.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
In embodiments of the present invention, when the capacitive touch screen is in touch condition, touched according to generation in real time
Electric capacity baseline value under state, detects the position of user touch point；When the capacitive touch screen is in non-tactile state, root
Generation detects the position of user touch point in the non-electric capacity baseline value under touch condition when factually, solves due to condenser type
Touch-screen is interfered, the problem for causing user to be operated to the capacitive touch screen, to ensure capacitive touch screen
The position of user touch point is detected, so as to improve user's operating efficiency.
Fig. 1 shows a kind of flow of realizing of self-adapted capacitance touch detection method provided in an embodiment of the present invention, describes in detail
It is as follows：
In step S101, the touch-control state of capacitive touch screen is obtained, the touch-control state includes touch condition and non-
Touch condition；
In the present embodiment, touch-control state includes touch condition and non-tactile state.
In the present embodiment, touch condition represents the state for detecting touch action on the touchscreen.
In the present embodiment, non-tactile state representation does not detect the state of touch action on the touchscreen.
In the present embodiment, the touch-control state of capacitive touch screen is obtained, the touch-control state includes touch condition and non-
Touch condition, including：
The absolute value of the difference of the electric capacity baseline value when capacitance and initialization that real-time detection is arrived under non-tactile state
During more than default touch threshold, the touch-control state that expression gets capacitive touch screen is touch condition；
The absolute value of the difference of the electric capacity baseline value when capacitance and initialization that real-time detection is arrived under non-tactile state
During less than or equal to default touch threshold, the touch-control state that expression gets capacitive touch screen is non-tactile state；
In the present embodiment, electric capacity baseline value during initialization under non-tactile state is upper once non-in touch condition
Under electric capacity baseline value.
In the present embodiment, default touch threshold can certainly set for user, or system default, not limit herein
System.
In the present embodiment, for purposes of illustration only, by taking practical application as an example, during initialization, the electric capacity under non-tactile state
Baseline value is the last electric capacity baseline value C under non-tactile stated, it is Thtouch to preset touch threshold1,Work as Cd-Cb>
Thtouch1When, expression does not detect touch action on the touchscreen, is touch condition.Work as Cd-Cb<=Thtouch1When, table
Show and do not detect touch action on the touchscreen, be non-tactile state.
In step s 102, when the capacitive touch screen is in touch condition, according to the touch condition for pre-building
The capacitance that model, the last electric capacity baseline value and real-time detection preserved under touch condition are arrived, in real time generation is being touched
Electric capacity baseline value under state；
In the present embodiment, electric capacity baseline value of the generation under touch condition has changeability in real time, is dynamic.
In the present embodiment, before step S102, including：
Set up touch condition model；
The touch condition model is：
Cai=((N-1) * Cai-1+Cd)/N
Wherein, CaiIt is i-th electric capacity baseline value under touch condition, Cai-1It is the i-th -1 electricity under touch condition
Hold baseline value, i is the integer more than or equal to 1, CdIt is the capacitance that real-time detection is arrived, N is the quantity of default sampled point, and N is
Integer more than or equal to 1.
In the present embodiment, layer is driven to obtain register information in capacitive touch screen, the register information includes reality
When the capacitance that the detects and last electric capacity baseline value preserved under touch condition, according to the touch condition mould for pre-building
The capacitance that type, the last electric capacity baseline value for preserving and real-time detection are arrived, generates the electric capacity base under touch condition in real time
Line value, and the electric capacity baseline value is replaced into the last electric capacity baseline value for preserving, while record storage is in register information, with
Just touch condition model subsequent calls data are calculated, call data method can using present technology any one,
This is not limited.
In the present embodiment, under touch condition, in real time according to the touch operation of user, dynamic electric capacity baseline is generated
Value, when the touch environment temperature of touch operation as user, humidity, touch surface occur and change so as to avoid, user makes
The situation of touch action can not be correctly detected out during, improve subsequently according to dynamic electric capacity baseline value, detect
User's touch action.
In the present embodiment, it is necessary to illustrate, layer is driven to obtain register information in capacitive touch screen, when posting
Storage information includes the capacitance that real-time detection is arrived, and does not exist the last electric capacity baseline value preserved under touch condition
When, when electric capacity baseline value is initialized, the capacitance that real-time detection is arrived is used as the electric capacity baseline value under touch condition.
In step s 103, when the capacitive touch screen is in non-tactile state, according to the non-tactile for pre-building
State model, the last electric capacity baseline value preserved under non-tactile state and the actually detected capacitance for arriving, in real time generation
In the non-electric capacity baseline value under touch condition；
In the present embodiment, electric capacity baseline value of the generation under non-tactile state has changeability in real time, is dynamic.
In the present embodiment, before step S103, including：
Set up non-tactile state model；
The non-tactile state model is：
Cbi=((N-1) * Cbi-1+Cd)/N
Wherein, CbiIt is in non-i-th electric capacity baseline value under touch condition, Cbi-1Be non-under touch condition
The i-th -1 electric capacity baseline value, i is the integer more than or equal to 1, CdIt is the capacitance that real-time detection is arrived, N is default sampled point
Quantity, N is the integer more than or equal to 1.
In the present embodiment, N can be set according to different touch graphic designs, touch-surface medium and thickness,
Preferably, N takes 8.
In the present embodiment, layer is driven to obtain register information in capacitive touch screen, the register information includes reality
When the capacitance that the detects and last electric capacity baseline value preserved under non-tactile state, according to the non-tactile shape for pre-building
The capacitance that states model, the last electric capacity baseline value for preserving and real-time detection are arrived, generation is under non-tactile state in real time
Electric capacity baseline value, and the electric capacity baseline value is replaced into the last electric capacity baseline value for preserving, while record storage is believed in register
In breath, so that non-tactile state model subsequent calls data are calculated, calling the method for data can use appointing for present technology
Meaning is a kind of, is not limited herein.
In step S104, when the capacitive touch screen is in touch condition, according to generation in real time in touch condition
Under electric capacity baseline value, detect user touch point position；
In the present embodiment, when capacitive touch screen is in touch condition, according to generation in real time under touch condition
Electric capacity baseline value, detects the position of user touch point.
In the present embodiment, according to electric capacity baseline value, the position for detecting user touch point is prior art, is not done herein superfluous
State.
In the present embodiment, under touch condition, in real time according to the touch operation of user, dynamic electric capacity baseline is generated
Value, when occurring the environment temperature of capacitive touch screen local environment, humidity, touch surface so as to avoid and changing, it is impossible to just
The situation of touch action really is detected, is improve subsequently according to dynamic electric capacity baseline value, detect user's touch action.
In step S105, when the capacitive touch screen is in non-tactile state, touched non-according to generation in real time
The electric capacity baseline value under state is touched, the position of user touch point is detected.
In the present embodiment, under non-tactile state, in real time according to the touch operation of user, dynamic electric capacity baseline is generated
Value, when occurring the environment temperature of capacitive touch screen local environment, humidity, touch surface so as to avoid and changing, it is impossible to just
The situation of touch action really is detected, is improve subsequently according to dynamic electric capacity baseline value, detect user's touch action.
In the present embodiment, for purposes of illustration only, Fig. 2 shows the present invention preferably schematic diagram in actual applications, wherein,
Actually detected this Cd of the capacitance for arriving, the Dynamic Baseline under touch condition is Ca, and the electric capacity baseline value under non-tactile state is
Cb。
In the present embodiment, it is necessary to illustrate, the execution sequencing of step S102 and step S103 can be mutual
Change, the execution sequencing of step S104 and step S105, it is also possible to exchange.
As the preferred embodiments of the present invention, when capacitive touch screen switches to non-tactile state from touch condition, lose
Abandon the last electric capacity baseline value under touch condition；
As the preferred embodiments of the present invention, the capacitance that the electric capacity baseline value under touch condition is arrived with real-time detection it
Poor absolute value more than it is default leave threshold value when, the capacitive touch screen switches to non-tactile state from touch condition.
In the present embodiment, it can be that user set certainly to preset and leave threshold value, or system default, do not limited herein
System.
In the present embodiment, for purposes of illustration only, by taking practical application as an example, when the dynamic electric capacity baseline under touch condition
It is Ca to be worth, and capacitive touch screen from touch condition switch to non-tactile state when, the electric capacity baseline value Ca of preservation is emptied.
In the present embodiment, when capacitive touch screen switches to non-tactile state from touch condition, by the register
The electric capacity baseline value preserved under touch condition of record storage is emptied in information, to avoid under touch condition, quick change
Electric capacity baseline value, to detect next time touch work(make produce interference.
When capacitive touch screen switches to touch condition from non-tactile state, the reservation last time is non-under touch condition
Electric capacity baseline value.
In the present embodiment, for purposes of illustration only, by taking practical application as an example, when the dynamic electric capacity baseline under touch condition
It is Cb to be worth, and capacitive touch screen from touch condition switch to non-tactile state when, will preserve electric capacity baseline value Cb it is independent
Record storage.
In the present embodiment, when capacitive touch screen switches to touch condition from non-tactile state, by register letter
The independent record storage of electric capacity baseline value preserved under the non-tactile state recorded in breath, to adapt in practical application, next time
When touch work(is made under detection non-tactile state, electric capacity baseline value can be slowly varying with environment.
As embodiments of the invention, before the touch-control state of capacitive touch screen is obtained, including：
Read the time period that system time and user specify；
When reaching the time period, start obtain capacitive touch screen touch-control state the step of.
Specifically can be by a display list, the display list includes the time period, the zoned format of time period include the morning,
Noon, afternoon, evening, morning, user can specify one or more time periods in display list, and system is according to specified by user
Time period, start obtain capacitive touch screen touch-control state the step of.
Be the morning when user's selected time period for purposes of illustration only, by taking practical application as an example, that is, earlier 6 points arrive
12 noon, within the time period the step of touch-control state of startup acquisition capacitive touch screen, within other time periods not
The step of starting the touch-control state for obtaining capacitive touch screen, to reduce the kwh loss of mobile terminal, improves mobile terminal
Stand-by time.
Embodiment 2
Fig. 3 shows a kind of structured flowchart of capacitance touch detection provided in an embodiment of the present invention, and the device can run
In the various terminals for possessing capacitive touch screen, including but not limited to mobile phone, pocket computer (Pocket Personal
Computer, PPC), palm PC, computer, notebook computer, personal digital assistant (Personal Digital
Assistant, PDA), MP4, MP3 etc..For convenience of description, illustrate only part related to the present embodiment.
Reference picture 3, the capacitance touch detection means, including：
Acquiring unit 31, the touch-control state for obtaining capacitive touch screen, the touch-control state include touch condition and
Non-tactile state；
First generation unit 32, for when the capacitive touch screen is in touch condition, according to touching for pre-building
Touch state model, the capacitance that the last electric capacity baseline value and real-time detection preserved under touch condition is arrived, in real time generation
Electric capacity baseline value under touch condition；
Second generation unit 33, for when the capacitive touch screen is in non-tactile state, according to what is pre-build
Non-tactile state model, the last electric capacity baseline value preserved under non-tactile state and the actually detected capacitance for arriving, it is real
Shi Shengcheng is in the non-electric capacity baseline value under touch condition；
First detection unit 34, for when the capacitive touch screen is in touch condition, being touched according to generation in real time
The electric capacity baseline value under state is touched, the position of user touch point is detected；
Second detection unit 35, for when the capacitive touch screen is in non-tactile state, being existed according to generation in real time
The non-electric capacity baseline value under touch condition, detects the position of user touch point.
Further, in the apparatus, the acquiring unit 31, including：
First obtains subelement, for obtaining during initialization in the non-electric capacity baseline value under touch condition；
Second obtains subelement, for the electric capacity when the capacitance that real-time detection is arrived is with initialization under non-tactile state
When the absolute value of the difference of baseline value is more than default touch threshold, the touch-control state for getting capacitive touch screen is touch condition；
3rd obtains subelement, for the electric capacity when the capacitance that real-time detection is arrived is with initialization under non-tactile state
When the absolute value of the difference of baseline value is more than default touch threshold, the touch-control state for getting capacitive touch screen is non-tactile shape
State.
Further, in the apparatus, also include：
Unit is lost, is existed for when capacitive touch screen switches to non-tactile state from touch condition, abandoning the last time
Electric capacity baseline value under touch condition；
Stick unit, exists for when capacitive touch screen switches to touch condition from non-tactile state, retaining the last time
The non-electric capacity baseline value under touch condition.
Further, in the apparatus, also include：
First sets up unit, for setting up touch condition model；
The touch condition model is：
Cai=((N-1) * Cai-1+Cd)/N
Wherein, CanIt is i-th electric capacity baseline value under touch condition, Cai-1It is the i-th -1 electricity under touch condition
Hold baseline value, i is the integer more than or equal to 1, CdIt is the capacitance that real-time detection is arrived, N is the quantity of default sampled point, and N is
Integer more than or equal to 1.
Second sets up unit, for setting up non-tactile state model；
The non-tactile state model is：
Cbi=((N-1) * Cbi-1+Cd)/N
Wherein, CbiIt is in non-i-th electric capacity baseline value under touch condition, Cbi-1Be non-under touch condition
The i-th -1 electric capacity baseline value, i is the integer more than or equal to 1, CdIt is the capacitance that real-time detection is arrived, N is default sampled point
Quantity, N is the integer more than or equal to 1.
In embodiments of the present invention, when the capacitive touch screen is in touch condition, touched according to generation in real time
Electric capacity baseline value under state, detects the position of user touch point；When the capacitive touch screen is in non-tactile state, root
Generation detects the position of user touch point in the non-electric capacity baseline value under touch condition when factually, solves due to condenser type
Touch-screen is interfered, the problem for causing user to be operated to the capacitive touch screen, to ensure capacitive touch screen
The position of user touch point is detected, so as to improve user's operating efficiency.
Device provided in an embodiment of the present invention can be applied in foregoing corresponding embodiment of the method one, and details are referring to above-mentioned
The description of embodiment one, will not be repeated here.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (8)
1. a kind of capacitance touch detection method, it is characterised in that including：
The touch-control state of capacitive touch screen is obtained, the touch-control state includes touch condition and non-tactile state；
When the capacitive touch screen is in touch condition, touched according to the touch condition model, last time that pre-build
The capacitance that the electric capacity baseline value and real-time detection preserved under state are arrived, generates the electric capacity baseline under touch condition in real time
Value；
When the capacitive touch screen is in non-tactile state, existed according to the non-tactile state model, last time that pre-build
The electric capacity baseline value preserved under non-tactile state and the actually detected capacitance for arriving, generation in real time is non-under touch condition
Electric capacity baseline value；
When the capacitive touch screen is in touch condition, according to electric capacity baseline value of the generation under touch condition in real time, inspection
Survey the position of user touch point；
When the capacitive touch screen is in non-tactile state, according to generation in real time in the non-electric capacity baseline under touch condition
Value, detects the position of user touch point；
When capacitive touch screen switches to non-tactile state from touch condition, the last electric capacity base under touch condition is abandoned
Line value；
When capacitive touch screen switches to touch condition from non-tactile state, retain the last time in the non-electricity under touch condition
Hold baseline value.
2. the method for claim 1, it is characterised in that the touch-control state of the acquisition capacitive touch screen, it is described to touch
Control state includes touch condition and non-tactile state, including：
Obtain when initializing in the non-electric capacity baseline value under touch condition；
When real-time detection to capacitance and the absolute value of the difference of electric capacity baseline value under non-tactile state is more than during initialization
During default touch threshold, the touch-control state for getting capacitive touch screen is touch condition；
When real-time detection to capacitance and the absolute value of the difference of electric capacity baseline value under non-tactile state is more than during initialization
During default touch threshold, the touch-control state for getting capacitive touch screen is non-tactile state.
3. the method for claim 1, it is characterised in that when the capacitive touch screen is in touch condition, root
Arrived according to the touch condition model for pre-building, the last electric capacity baseline value and real-time detection preserved under touch condition
Capacitance, in real time before electric capacity baseline value of the generation under touch condition, including：
Set up touch condition model；
The touch condition model is：
Cai=((N-1) * Cai-1+Cd)/N
Wherein, CanIt is i-th electric capacity baseline value under touch condition, Cai-1It is the i-th -1 electric capacity base under touch condition
Line value, i is the integer more than or equal to 1, CdBe the capacitance that real-time detection is arrived, N is the quantity of default sampled point, N be more than
Integer equal to 1.
4. the method for claim 1, it is characterised in that when the capacitive touch screen is in non-tactile state,
According to the non-tactile state model for pre-building, the last electric capacity baseline value preserved under non-tactile state and actually detected
The capacitance for arriving, generated before the non-electric capacity baseline value under touch condition in real time, including：
Set up non-tactile state model；
The non-tactile state model is：
Cbi=((N-1) * Cbi-1+Cd)/N
Wherein, CbiIt is in non-i-th electric capacity baseline value under touch condition, Cbi-1Be it is non-under touch condition i-th -1
Individual electric capacity baseline value, i is the integer more than or equal to 1, CdIt is the capacitance that real-time detection is arrived, N is the quantity of default sampled point,
N is the integer more than or equal to 1.
5. a kind of capacitance touch detection means, it is characterised in that including：
Acquiring unit, the touch-control state for obtaining capacitive touch screen, the touch-control state includes touch condition and non-tactile
State；
First generation unit, for when the capacitive touch screen is in touch condition, according to the touch condition for pre-building
The capacitance that model, the last electric capacity baseline value and real-time detection preserved under touch condition are arrived, in real time generation is being touched
Electric capacity baseline value under state；
Second generation unit, for when the capacitive touch screen is in non-tactile state, according to the non-tactile for pre-building
State model, the last electric capacity baseline value preserved under non-tactile state and the actually detected capacitance for arriving, in real time generation
In the non-electric capacity baseline value under touch condition；
First detection unit, for when the capacitive touch screen is in touch condition, according to generation in real time in touch condition
Under electric capacity baseline value, detect user touch point position；
Second detection unit, for when the capacitive touch screen is in non-tactile state, being touched non-according to generation in real time
The electric capacity baseline value under state is touched, the position of user touch point is detected；
Unit is lost, for when capacitive touch screen switches to non-tactile state from touch condition, abandoning last touch
Electric capacity baseline value under state；
Stick unit, for when capacitive touch screen switches to touch condition from non-tactile state, retain it is last it is non-
Electric capacity baseline value under touch condition.
6. device as claimed in claim 5, it is characterised in that the acquiring unit, including：
First obtains subelement, for obtaining during initialization in the non-electric capacity baseline value under touch condition；
Second obtains subelement, for the electric capacity baseline when the capacitance that real-time detection is arrived is with initialization under non-tactile state
When the absolute value of the difference of value is more than default touch threshold, the touch-control state for getting capacitive touch screen is touch condition；
3rd obtains subelement, for the electric capacity baseline when the capacitance that real-time detection is arrived is with initialization under non-tactile state
When the absolute value of the difference of value is more than default touch threshold, the touch-control state for getting capacitive touch screen is non-tactile state.
7. device as claimed in claim 5, it is characterised in that also include：
First sets up unit, for setting up touch condition model；
The touch condition model is：
Cai=((N-1) * Cai-1+Cd)/N
Wherein, CanIt is i-th electric capacity baseline value under touch condition, Cai-1It is the i-th -1 electric capacity base under touch condition
Line value, i be more than
Integer equal to 1, CdIt is the capacitance that real-time detection is arrived, N is the quantity of default sampled point, and N is whole more than or equal to 1
Number；
Second sets up unit, for setting up non-tactile state model；
The non-tactile state model is：
Cbi=((N-1) * Cbi-1+Cd)/N
Wherein, CbiIt is in non-i-th electric capacity baseline value under touch condition, Cbi-1Be it is non-under touch condition i-th -1
Individual electric capacity baseline value, i is the integer more than or equal to 1, CdIt is the capacitance that real-time detection is arrived, N is the quantity of default sampled point,
N is the integer more than or equal to 1.
8. a kind of mobile terminal, it is characterised in that including the device described in claim 5 to 7 any one claim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310410963.4A CN104423753B (en) | 2013-09-10 | 2013-09-10 | A kind of capacitance touch detection method, device and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310410963.4A CN104423753B (en) | 2013-09-10 | 2013-09-10 | A kind of capacitance touch detection method, device and mobile terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104423753A CN104423753A (en) | 2015-03-18 |
| CN104423753B true CN104423753B (en) | 2017-07-04 |
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| CN110188014A (en) * | 2019-05-29 | 2019-08-30 | 浙江大学 | A kind of anti-interference test method for capacitive touch screen |
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| CN104716944B (en) * | 2015-03-30 | 2018-09-11 | 广东美的厨房电器制造有限公司 | The triggering judgment method and household electrical appliance of touch key-press |
| JP6416691B2 (en) * | 2015-05-14 | 2018-10-31 | アルプス電気株式会社 | Input device and operation method of input device |
| US9811220B2 (en) * | 2015-06-19 | 2017-11-07 | NXA USA, Inc. | Signal adaptive filtering for touch detection |
| CN106293296B (en) * | 2016-08-14 | 2018-11-06 | 广州市趣智智能科技有限公司 | Adaptive plant touch detecting method |
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