CN109614016A - Touch identification method, device and the electronic equipment of capacitance touch screen - Google Patents
Touch identification method, device and the electronic equipment of capacitance touch screen Download PDFInfo
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- CN109614016A CN109614016A CN201910026505.8A CN201910026505A CN109614016A CN 109614016 A CN109614016 A CN 109614016A CN 201910026505 A CN201910026505 A CN 201910026505A CN 109614016 A CN109614016 A CN 109614016A
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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
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Abstract
The embodiment of the present invention provides the touch identification method, device and electronic equipment of a kind of capacitance touch screen, this method comprises: obtaining the mutual capacitance value of each touch point of the capacitance touch screen and the quadrangle current value of the capacitance touch screen；Situation of change and the quadrangle current value according to each mutual capacitance value relative to mutual capacitance a reference value, determine the touch mode of the capacitance touch screen；According to the touch mode of the capacitance touch screen, the position of touch point is determined；The method of the present embodiment can recognize that capacitance touch screen is that water droplet touches, finger touches or wet hand touches, and is directed to different touch modes, identifies to the position of touch point, improves the touch recognition accuracy of capacitance touch screen.
Description
Technical field
The present embodiments relate to electronic technology field more particularly to a kind of touch identification methods of capacitance touch screen, dress
It sets and electronic equipment.
Background technique
With the continuous development of electronic technology, touch screen has been widely used in various electronic products, such as intelligently
The products such as mobile phone, intelligent appliance, tablet computer, Automatic Teller Machine, automatic vending machine, which have carried touch screen, supports touch-control class behaviour
Make, touch screen technology field also obtains fast development.Touch screen experienced hair of the resistive touch screen to capacitive touch screen
Exhibition is applied to the touch screen on each electronic product based on capacitive touch screen at present.
Capacitive touch screen is worked using the electric current induction of human body.Capacitive touch screen is one piece four layers compound
Glass screen, the inner surface and interlayer of glass screen are respectively coated with one layer of nano indium tin metal oxide ITO, and outermost layer is a thin layer silicon soil
Glassivation, interlayer ITO coating draw four electrodes as working face on four angles, internal layer ITO is that shielded layer is good to guarantee
Good working environment.When finger touches on capacitive touch screen, due to human body grounding, finger and capacitance touch screen surfaces
It is formed with a coupled capacitor, for high-frequency current, capacitor is direct conductor, and then finger siphons away one very from contact point
Small electric current.This electric current is flowed out from the electrode on the quadrangle of touch screen respectively, and flow through the electric currents of this four electrodes with
The distance of finger to quadrangle is directly proportional, and controller obtains the position of touch point by accurately calculating to this four current ratios.
However, can also cause the change of capacitor when water droplet drop is on capacitive touch screen, capacitive touch screen is caused to be known
Other accuracy reduces.
Summary of the invention
The embodiment of the present invention provides the touch identification method, device and electronic equipment of a kind of capacitance touch screen, works as capacitive touch
In the case where touching screen and having water droplet, touch recognition accuracy can be improved.
In a first aspect, the embodiment of the present invention provides a kind of touch identification method of capacitance touch screen, comprising:
Obtain the mutual capacitance value of each touch point of the capacitance touch screen and the quadrangle electric current of the capacitance touch screen
Value；
Situation of change and the quadrangle current value according to each mutual capacitance value relative to mutual capacitance a reference value, really
The touch mode of the fixed capacitance touch screen, the touch mode are one of following: water droplet touches, finger touches, wet hand
It touches；Wherein, the mutual capacitance a reference value is the mutual capacitance value of the capacitance touch screen each touch point when not touched；
According to the touch mode of the capacitance touch screen, the position of touch point is determined.
Optionally, the touch mode according to the capacitance touch screen, determines the position of touch point, comprising:
If the touch mode of the capacitance touch screen is the touch of wet hand, according to each mutual capacitance value, the mutual capacitance
A reference value and the quadrangle current value, determine the position of touch point.
Optionally, it is described according to each mutual capacitance value relative to the situation of change of mutual capacitance a reference value and described four
Angle current value determines the touch mode of the capacitance touch screen, comprising:
If each mutual capacitance value meets the first preset condition, and the quadrangle current value is greater than first threshold, it is determined that
The touch mode of the capacitance touch screen is the touch of wet hand；
Wherein, first preset condition are as follows: at least partly described mutual capacitance value is greater than the mutual capacitance a reference value, and,
The distribution of at least partly described mutual capacitance value is distributed in the conical surface of opening upwards.
Optionally, it is described according to each mutual capacitance value relative to the situation of change of mutual capacitance a reference value and described four
Angle current value determines the touch mode of the capacitance touch screen, comprising:
If each mutual capacitance value is respectively less than the mutual capacitance a reference value, and the quadrangle current value be greater than second threshold and
Less than first threshold, it is determined that the touch mode of the capacitance touch screen is finger touch；
If each mutual capacitance value is all larger than the mutual capacitance a reference value, and the quadrangle current value be greater than second threshold and
Less than first threshold, it is determined that the touch mode of the capacitance touch screen is water droplet touch；
The second threshold is less than the first threshold.
Optionally, described according to each mutual capacitance value, the mutual capacitance a reference value and the quadrangle current value, determine touching
Touch position a little, comprising:
According to each mutual capacitance value, mutual capacitance minimum value, mutual capacitance mean value and mutual capacitance change rate are obtained；
According to the mutual capacitance minimum value, the mutual capacitance mean value, the mutual capacitance change rate, the mutual capacitance a reference value
With mutual capacitance empirical value, the position of touch point is determined, the mutual capacitance empirical value is used to indicate finger institute under finger touch mode
The mutual capacitance value of the touch point of touch.
Optionally, it is described according to the mutual capacitance minimum value, it is the mutual capacitance mean value, the mutual capacitance change rate, described
Mutual capacitance a reference value and mutual capacitance empirical value, determine the position of touch point, comprising:
If the mutual capacitance minimum value be less than the mutual capacitance a reference value, according to the mutual capacitance minimum value, it is described mutually
Capacitor mean value and the mutual capacitance empirical value determine mutual capacitance value to be modified and repair to the mutual capacitance value to be modified
Just；
According to the mutual capacitance value of revised each touch point, the position of touch point is determined.
Optionally, it is described according to the mutual capacitance minimum value, it is the mutual capacitance mean value, the mutual capacitance change rate, described
Mutual capacitance a reference value and mutual capacitance empirical value, determine the position of touch point, comprising:
If the mutual capacitance minimum value is greater than the mutual capacitance a reference value, and, the mutual capacitance change rate is greater than third threshold
Value, and, the absolute value of the difference of the mutual capacitance mean value and the mutual capacitance a reference value greater than the mutual capacitance a reference value with it is described
The absolute value of the difference of mutual capacitance empirical value then determines the position of the first candidate touch point according to the quadrangle current value；
According to minimum value, the minimum of each capacitance, the position of the second candidate touch point is determined；
According to the position of the position of the described first candidate touch point and the second candidate touch point, the touch point is determined
Position.
Second aspect, the embodiment of the present invention provide a kind of touch recognition device of capacitance touch screen, comprising:
Module is obtained, for obtaining the mutual capacitance value and the capacitance touch of each touch point of the capacitance touch screen
The quadrangle current value of screen；
First determining module, for the situation of change according to each mutual capacitance value relative to mutual capacitance a reference value, and
The quadrangle current value determines that the touch mode of the capacitance touch screen, the touch mode are one of following: water droplet touching
It touches, finger touches, wet hand touches；Wherein, the mutual capacitance a reference value is the capacitance touch screen each touch-control when not touched
The mutual capacitance value of point；
Second determining module determines the position of touch point for the touch mode according to the capacitance touch screen.
Optionally, second determining module, if the touch mode specifically for the capacitance touch screen is the touch of wet hand,
Then according to each mutual capacitance value, the mutual capacitance a reference value and the quadrangle current value, the position of touch point is determined.
Optionally, first determining module is specifically used for:
If each mutual capacitance value meets the first preset condition, and the quadrangle current value is greater than first threshold, it is determined that
The touch mode of the capacitance touch screen is the touch of wet hand；
Wherein, first preset condition are as follows: at least partly described mutual capacitance value is greater than the mutual capacitance a reference value, and,
The distribution of at least partly described mutual capacitance value is distributed in the conical surface of opening upwards.
Optionally, first determining module is specifically used for:
If each mutual capacitance value is respectively less than the mutual capacitance a reference value, and the quadrangle current value be greater than second threshold and
Less than the first threshold, it is determined that the touch mode of the capacitance touch screen is finger touch；
If each mutual capacitance value is all larger than the mutual capacitance a reference value, and the quadrangle current value be greater than second threshold and
Less than the first threshold, it is determined that the touch mode of the capacitance touch screen is water droplet touch；
The second threshold is less than the first threshold.
Optionally, second determining module is specifically used for:
According to each mutual capacitance value, mutual capacitance minimum value, mutual capacitance mean value and mutual capacitance change rate are obtained；
According to the mutual capacitance minimum value, the mutual capacitance mean value, the mutual capacitance change rate, the mutual capacitance a reference value
With mutual capacitance empirical value, the position of touch point is determined, the mutual capacitance empirical value is used to indicate finger institute under finger touch mode
The mutual capacitance value of the touch point of touch.
Optionally, second determining module is specifically used for:
If the mutual capacitance minimum value be less than the mutual capacitance a reference value, according to the mutual capacitance minimum value, it is described mutually
Capacitor mean value and the mutual capacitance empirical value determine mutual capacitance value to be modified and repair to the mutual capacitance value to be modified
Just；
According to the mutual capacitance value of revised each touch point, the position of touch point is determined.
Optionally, second determining module is specifically used for:
If the mutual capacitance minimum value is greater than the mutual capacitance a reference value, and, the mutual capacitance change rate is greater than third threshold
Value, and, the absolute value of the difference of the mutual capacitance mean value and the mutual capacitance a reference value greater than the mutual capacitance a reference value with it is described
The absolute value of the difference of mutual capacitance empirical value then determines the position of the first candidate touch point according to the quadrangle current value；
According to minimum value, the minimum of each capacitance, the position of the second candidate touch point is determined；
According to the position of the position of the described first candidate touch point and the second candidate touch point, the touch point is determined
Position.
The third aspect, the embodiment of the present invention provide a kind of electronic equipment, including capacitance touch screen, at least one processor and
Memory；
The memory stores computer executed instructions；
At least one described processor executes the computer executed instructions of memory storage so that it is described at least one
Processor executes such as the described in any item methods of first aspect.
Fourth aspect, the embodiment of the present invention provide a kind of computer readable storage medium, the computer-readable storage medium
It is stored with computer executed instructions in matter, when processor executes the computer executed instructions, realizes as first aspect is any
Method described in.
Touch identification method, device and the electronic equipment of capacitance touch screen provided in an embodiment of the present invention, this method comprises:
Obtain the mutual capacitance value of each touch point of the capacitance touch screen and the quadrangle current value of the capacitance touch screen；According to each
Situation of change and the quadrangle current value of the mutual capacitance value relative to mutual capacitance a reference value, determine the capacitance touch
The touch mode of screen；According to the touch mode of the capacitance touch screen, the position of touch point is determined；The method of the present embodiment can
Identify that capacitance touch screen is that water droplet touches, finger touches or wet hand touches, and is directed to different touch modes, to touch
The position of point is identified, the touch recognition accuracy of capacitance touch screen is improved.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 is the application scenarios schematic diagram of the embodiment of the present invention；
Fig. 2 is the flow diagram of the touch identification method of capacitance touch screen provided in an embodiment of the present invention；
Fig. 3 is the flow diagram of the touch mode of determining capacitance touch screen provided in an embodiment of the present invention；
Fig. 4 A to Fig. 4 C is the distribution schematic diagram of mutual capacitance value under wet hand touch mode provided in an embodiment of the present invention；
Fig. 5 is the flow diagram of the position of identification touch point provided in an embodiment of the present invention；
Fig. 6 is the structural schematic diagram of the touch recognition device of capacitance touch screen provided in an embodiment of the present invention；
Fig. 7 is the structural schematic diagram of electronic equipment provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Description and claims of this specification and term " first ", " second ", " third " " in above-mentioned attached drawing
The (if present)s such as four " are to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should manage
The data that solution uses in this way are interchangeable under appropriate circumstances, so that the embodiment of the present invention described herein for example can be to remove
Sequence other than those of illustrating or describe herein is implemented.In addition, term " includes " and " having " and theirs is any
Deformation, it is intended that cover it is non-exclusive include, for example, containing the process, method of a series of steps or units, system, production
Product or equipment those of are not necessarily limited to be clearly listed step or unit, but may include be not clearly listed or for this
A little process, methods, the other step or units of product or equipment inherently.
Fig. 1 is the application scenarios schematic diagram of the embodiment of the present invention, as shown in Figure 1, the scene is user electric using having
When holding the electronic equipment of touch screen, user touches the scene of capacitance touch screen.Wherein, electronic equipment can be with capacitance touch
Any electronic equipment of screen, including but not limited to smart phone, intelligent appliance, tablet computer, Automatic Teller Machine, automatic vending machine
Deng.Illustratively, it is the case where user is using smart phone that Fig. 1 is exemplary.
In a kind of possible application scenarios, as shown in Figure 1, have water droplet on the capacitance touch screen of the electronic equipment, Yong Hu
There is the position of water droplet to touch capacitance touch screen.In the prior art, when user have water droplet capacitance touch screen touch when, will lead to
The identification accuracy of capacitance touch screen reduces.
The embodiment of the present invention provides a kind of touch identification method of capacitance touch screen, whether can recognize that capacitance touch screen
It is that band water touches, further, when capacitance touch screen is that band water touches, the touch location of identification can be modified, be obtained
To accurate touch location, to improve the touch recognition accuracy of capacitance touch screen.
Technical solution of the present invention is described in detail with specifically embodiment below.These specific implementations below
Example can be combined with each other, and the same or similar concept or process may be repeated no more in some embodiments.
Fig. 2 is the flow diagram of the touch identification method of capacitance touch screen provided in an embodiment of the present invention, the present embodiment
Method can be executed by touch recognition device, which can be the form of software and/or hardware, which can specifically set
It sets in the electronic equipment for including capacitance touch screen.
As shown in Fig. 2, the method for the present embodiment, comprising:
S201: the mutual capacitance value of each touch point of the capacitance touch screen and the quadrangle of the capacitance touch screen are obtained
Current value.
Due to human body grounding, finger and capacitance touch screen (for convenience of description, subsequent to be referred to as " capacitance plate ") just form one
A equivalent capacity affects the coupling near touch point between two electrodes, to change when finger touches capacitance plate
Capacitance between the two electrodes.
Specifically, the mutual electricity of each touch point of capacitance plate can be obtained by each touch point of periodic scan capacitance plate
Capacitance obtains the quadrangle current value of capacitance plate by the electrode on the quadrangle of periodic scan capacitance plate.
S202: situation of change and the quadrangle electric current according to each mutual capacitance value relative to mutual capacitance a reference value
Value determines that the touch mode of the capacitance touch screen, the touch mode are one of following: water droplet touches, finger touches,
Wet hand touches；Wherein, the mutual capacitance a reference value is the mutual capacitance value of the capacitance touch screen each touch point when not touched.
Specifically, when capacitance plate is not when being touched, i.e., both without water droplet on capacitance plate, when also being touched without finger, each touch-control
Point mutual capacitance value be it is identical, mutual capacitance value when not touched capacitance plate in the present embodiment is known as mutual capacitance a reference value.
When water droplet drop is on capacitance plate, the mutual capacitance of corresponding touch point can be made to increase, quadrangle current value increases；When
When finger touches capacitance plate, the mutual capacitance of corresponding touch point can be made to reduce, and quadrangle current value increases.As it can be seen that no matter water
Drop or finger can make the mutual capacitance value of each touch point change relative to mutual capacitance a reference value when touch screen touches,
And quadrangle current value can be made to change.
Therefore, in the present embodiment, situation of change according to each mutual capacitance value relative to mutual capacitance a reference value, Yi Jisuo
Quadrangle current value is stated, determines the touch mode of the capacitance touch screen.Wherein, water droplet touch refers to only water droplet drop in capacitance plate
The case where, finger touch refers to the case where only finger touches capacitance plate, and wet hand touches the water for referring to and finger being touched to capacitance plate
It drips position or the finger with water touches capacitance plate.
S203: according to the touch mode of the capacitance touch screen, the position of touch point is determined.
Specifically, the touch mode that touch recognition device can also be determined according to identification, carries out different identification respectively
Processing, such as: when for water droplet touch, without carrying out the identification of touch point；When for finger touch, according to existing touch point
Recognition methods is identified；When for the touch of wet hand, improved touch point recognition methods can be used, or to existing side
The touch point that method identifies is modified, and obtains accurate touch point with identification.
The touch identification method of the capacitance touch screen of the present embodiment, comprising: obtain each touch point of the capacitance touch screen
Mutual capacitance value and the capacitance touch screen quadrangle current value；According to each mutual capacitance value relative to mutual capacitance benchmark
The situation of change of value and the quadrangle current value, determine the touch mode of the capacitance touch screen；According to the capacitance touch
The touch mode of screen determines the position of touch point；The method of the present embodiment can recognize that capacitance touch screen is water droplet touch, hand
Refer to that touch or wet hand touch, and be directed to different touch modes, the position of touch point is identified, capacitance touch is improved
The touch recognition accuracy of screen.
Fig. 3 is the flow diagram of the touch mode of determining capacitance touch screen provided in an embodiment of the present invention, such as Fig. 3 institute
Show, comprising:
S2021: if each mutual capacitance value is respectively less than the mutual capacitance a reference value, and the quadrangle current value is greater than second
Threshold value and be less than the first threshold, it is determined that the touch mode of the capacitance touch screen be finger touch.
S2022: if each mutual capacitance value is all larger than the mutual capacitance a reference value, and the quadrangle current value is greater than second
Threshold value and be less than the first threshold, it is determined that the touch mode of the capacitance touch screen be water droplet touch.
It should be understood that the mutual capacitance value of corresponding touch point can be made to become smaller, that is, finger when finger touches capacitance plate
The mutual capacitance value of the corresponding touch point of touch location can be less than mutual capacitance a reference value.Water droplet can make the mutual capacitance value of touch point become
Greatly, that is, the mutual capacitance value of the corresponding touch point of water droplet can be greater than mutual capacitance a reference value.
In addition, quadrangle current value can be made to become larger with finger touch both of which since water droplet is touched, in the present embodiment,
First threshold and second threshold are set, and first threshold is greater than second threshold.When quadrangle current value is greater than second threshold and less than the
When one threshold value, it is believed that may be that water droplet touch or finger touch；When quadrangle current value is greater than first threshold, it is believed that may be
Wet hand touches.
S2023: if each mutual capacitance value meets the first preset condition, and the quadrangle current value is greater than first threshold,
Then determine the touch mode of the capacitance touch screen for the touch of wet hand；Wherein, first preset condition are as follows: at least partly described
Mutual capacitance value is greater than the mutual capacitance a reference value, and, the distribution of at least partly described mutual capacitance value divides in the conical surface of opening upwards
Cloth.
Under wet hand touch mode, under the collective effect of water droplet and finger, the electricity of the part touch point of capacitance plate can be made
Intermediate similar conical surface distribution low, surrounding is high is presented in capacitance.That is, along mutual capacitance on the tangent line of all directions of capacitance plate
Distribution in similar opening upwards parabolic distribution.
Fig. 4 A to Fig. 4 C is the distribution schematic diagram of mutual capacitance value under wet hand touch mode provided in an embodiment of the present invention,
In, abscissa indicates the position of the touch point of the tangent line in certain direction of capacitance plate, and ordinate indicates the mutual capacitance value of each touch point.
Fig. 4 A to Fig. 4 C illustrates the distribution of the mutual capacitance value in the case of three kinds respectively, wherein horizontal line indicates mutual capacitance a reference value, curve
Indicate the mutual capacitance value of each touch point, the distribution of each mutual capacitance is in the parabolic distribution similar to opening upwards.Meet in mutual capacitance
On the basis of this distribution, if quadrangle current value is greater than first threshold, it is determined that the touch mode of capacitance plate is the touch of wet hand.
Situation of change and quadrangle current value in the present embodiment, by each mutual capacitance value relative to mutual capacitance a reference value
Situation of change combines, and the touch mode of capacitance plate can be recognized accurately.
On the basis of recognizing the touch mode of capacitance plate, if water droplet touches, due to there is no finger input, without into
The further identification of row；If finger touches, due to the interference of not no water droplet, can according to existing touch recognition method into
The identification of row touch point；, may be inaccurate using the touch point that existing touch identification method obtains if wet hand touches, because
This, the present embodiment is improved also directed to the identification process of the touch point under wet hand touch mode.It is specific below with reference to one
Embodiment describe in detail.
Fig. 5 is the flow diagram of the position of identification touch point provided in an embodiment of the present invention, as shown in Figure 5, comprising:
S501: according to each mutual capacitance value, mutual capacitance minimum value, mutual capacitance mean value and mutual capacitance change rate are obtained.
Wherein, mutual capacitance change rate can be by asking single order to lead to obtain mutual capacitance curve shown in Fig. 4 A to Fig. 4 C.
S502: according to the mutual capacitance minimum value, the mutual capacitance mean value, the mutual capacitance change rate, the mutual capacitance
A reference value and mutual capacitance empirical value, determine the position of touch point, and the mutual capacitance empirical value is used to indicate under finger touch mode
The mutual capacitance value for the touch point that finger is touched.
In a kind of optional embodiment, the acquisition modes of mutual capacitance empirical value are as follows: due to Various Seasonal, geographical location
Equal environment are different, so that the mutual capacitance that finger touches capacitance plate generation is also variant, in the present embodiment, by the way of test,
It simulates various varying environments (Various Seasonal, diverse geographic location), and repeatedly records user's finger for every kind of environment and touch electricity
The mutual capacitance size generated when holding screen, obtains sample data.The corresponding sample data averaged of every kind of environment is obtained respectively
The corresponding mutual capacitance empirical value of environment.Such as: the mutual capacitance empirical value in summer, family is C1, the mutual capacitance in spring, office
Empirical value is C2, and winter, outdoor mutual capacitance empirical value are C3 etc..
Below for three kinds of situations in Fig. 4 A to Fig. 4 C, the identification process of touch point position is introduced, respectively in order to describe
It is convenient, each mutual capacitance value is recorded as Ai, mutual capacitance minimum value is recorded as Amin, and mutual capacitance mean value is recorded as B, mutual capacitance experience
Value is recorded as C, and mutual capacitance a reference value is recorded as X, and mutual capacitance change rate is recorded as R, quadrangle current value be recorded as Q1, Q2, Q3,
Q4。
For the situation in Fig. 4 A, mutual capacitance minimum value is greater than mutual capacitance a reference value (i.e. Amin > X), and, mutual capacitance variation
Rate R is less than third threshold value, and, the absolute value of the difference of mutual capacitance mean value and mutual capacitance a reference value is less than mutual capacitance a reference value and mutually electricity
Hold empirical value absolute value of the difference (i.e. | B-X | < | X-C |), illustrate that influence of the water droplet to capacitance plate mutual capacitance is smaller, it is believed that
Only have water droplet that the situation can be determined as to water droplet mode, the position without the touch point to capacitance plate without finger on screen
It is identified.
For the situation in Fig. 4 B, if mutual capacitance minimum value is greater than mutual capacitance a reference value (i.e. Amin > X), and, mutual capacitance becomes
Rate R is greater than third threshold value, and, the absolute value of the difference of mutual capacitance mean value and mutual capacitance a reference value is greater than mutual capacitance a reference value and mutually
Capacitor empirical value absolute value of the difference (i.e. | B-X | > | X-C |), illustrate that water droplet is affected to capacitance plate mutual capacitance, further
, if quadrangle current value Q1, Q2, Q3, Q4 are greater than first threshold, illustrate that finger touches on capacitance plate.
In this case, determining first candidate touch point of the finger on capacitance plate according to the proportionate relationship of quadrangle current value
Position；Minimum value, minimum further according to each capacitance determine the position of second candidate touch point of the finger on capacitance plate.
Wherein, the quantity of the first candidate touch point and the second candidate touch point may each be multiple.
According to the position of the position of the described first candidate touch point and the second candidate touch point, the touch point is determined
Position.Optionally, using the point being overlapped in the first candidate touch point and the second candidate touch point as finger touch point.
Illustrate finger if mutual capacitance minimum value is less than mutual capacitance a reference value (i.e. Amin < X) for the situation in Fig. 4 C
It touches in water droplet, in this case, in addition to minimum value and other than less than the point of mutual capacitance reference values X being finger touch position,
It is also likely to be finger touch position for the critical point slightly larger than mutual capacitance reference values X.Therefore, it is necessary to rectify to mutual capacitance value
Just.
In a kind of optional embodiment, according to mutual capacitance minimum value, mutual capacitance mean value and mutual capacitance empirical value, determine to
Modified mutual capacitance value is simultaneously treated modified mutual capacitance value and is modified；Such as: if mutual capacitance a reference value and mutual capacitance minimum value
Absolute value of the difference be less than mutual capacitance mean value and mutual capacitance a reference value absolute value of the difference (i.e. | X-Amin | < | B-X |), then to small
It is modified in the mutual capacitance value of mutual capacitance reference values X, for example, the point of Ai < B is modified to Ai-C.
In turn, according to the mutual capacitance value of revised each touch point, the position of touch point is determined.Such as: after amendment
Minimum value, the minimum of each mutual capacitance etc. determine the position of touch point, alternatively, each touch point of mutual capacitance a reference value will be less than
As touch point.
The touch identification method of capacitance touch screen provided in an embodiment of the present invention, can recognize that capacitance touch screen whether be
Band water touches, and further, when capacitance touch screen is that band water touches, can be modified, obtain to the touch location of identification
Accurate touch location, to improve the touch recognition accuracy of capacitance touch screen.
Fig. 6 is the structural schematic diagram of the touch recognition device of capacitance touch screen provided in an embodiment of the present invention；Such as Fig. 6 institute
Show, the touch recognition device 600 of the capacitance touch screen of the present embodiment, comprising: obtain module 601, the first determining module 602 and the
Two determining modules 603.
Wherein, module 601 is obtained, for obtaining the mutual capacitance value of each touch point of the capacitance touch screen and described
The quadrangle current value of capacitance touch screen；
First determining module 602, for the situation of change according to each mutual capacitance value relative to mutual capacitance a reference value, with
And the quadrangle current value, determine that the touch mode of the capacitance touch screen, the touch mode are one of following: water droplet
It touches, finger touches, wet hand touches；Wherein, the mutual capacitance a reference value is that the capacitance touch screen is respectively touched when not touched
Control the mutual capacitance value of point；
Second determining module 603 determines the position of touch point for the touch mode according to the capacitance touch screen.
Optionally, second determining module 603, if the touch mode specifically for the capacitance touch screen is the touching of wet hand
It touches, then according to each mutual capacitance value, the mutual capacitance a reference value and the quadrangle current value, determines the position of touch point.
Optionally, first determining module 602 is specifically used for:
If each mutual capacitance value meets the first preset condition, and the quadrangle current value is greater than first threshold, it is determined that
The touch mode of the capacitance touch screen is the touch of wet hand；
Wherein, first preset condition are as follows: at least partly described mutual capacitance value is greater than the mutual capacitance a reference value, and,
The distribution of at least partly described mutual capacitance value is distributed in the conical surface of opening upwards.
Optionally, first determining module 602 is specifically used for:
If each mutual capacitance value is respectively less than the mutual capacitance a reference value, and the quadrangle current value be greater than second threshold and
Less than the first threshold, it is determined that the touch mode of the capacitance touch screen is finger touch；
If each mutual capacitance value is all larger than the mutual capacitance a reference value, and the quadrangle current value be greater than second threshold and
Less than the first threshold, it is determined that the touch mode of the capacitance touch screen is water droplet touch；
The second threshold is less than the first threshold.
Optionally, second determining module 603 is specifically used for:
According to each mutual capacitance value, mutual capacitance minimum value, mutual capacitance mean value and mutual capacitance change rate are obtained；
According to the mutual capacitance minimum value, the mutual capacitance mean value, the mutual capacitance change rate, the mutual capacitance a reference value
With mutual capacitance empirical value, the position of touch point is determined, the mutual capacitance empirical value is used to indicate finger institute under finger touch mode
The mutual capacitance value of the touch point of touch.
Optionally, second determining module 603 is specifically used for:
If the mutual capacitance minimum value be less than the mutual capacitance a reference value, according to the mutual capacitance minimum value, it is described mutually
Capacitor mean value and the mutual capacitance empirical value determine mutual capacitance value to be modified and repair to the mutual capacitance value to be modified
Just；
According to the mutual capacitance value of revised each touch point, the position of touch point is determined.
Optionally, second determining module 603 is specifically used for:
If the mutual capacitance minimum value is greater than the mutual capacitance a reference value, and, the mutual capacitance change rate is greater than third threshold
Value, and, the absolute value of the difference of the mutual capacitance mean value and the mutual capacitance a reference value greater than the mutual capacitance a reference value with it is described
The absolute value of the difference of mutual capacitance empirical value then determines the position of the first candidate touch point according to the quadrangle current value；
According to minimum value, the minimum of each capacitance, the position of the second candidate touch point is determined；
According to the position of the position of the described first candidate touch point and the second candidate touch point, the touch point is determined
Position.
The touch recognition device of the capacitance touch screen of the present embodiment can be used for executing the technology of any of the above-described embodiment of the method
Scheme, it is similar that the realization principle and technical effect are similar, and details are not described herein again.
Fig. 7 is the structural schematic diagram of electronic equipment provided in an embodiment of the present invention, and the electronic equipment of the present embodiment includes electricity
Hold touch screen (not shown), as shown in Figure 7, further includes: at least one processor 701 and memory 702.Wherein, processor
701, memory 702 is connected by bus 703.
During specific implementation, at least one processor 701 executes the computer execution that the memory 702 stores and refers to
It enables, so that at least one processor 701 executes the technical solution of any of the above-described embodiment of the method.
The specific implementation process of processor 701 can be found in above method embodiment, and it is similar that the realization principle and technical effect are similar,
Details are not described herein again for the present embodiment.
In above-mentioned embodiment shown in Fig. 7, it should be appreciated that processor can be central processing unit (English:
Central Processing Unit, referred to as: CPU), can also be other general processors, digital signal processor (English:
Digital Signal Processor, referred to as: DSP), specific integrated circuit (English: Application Specific
Integrated Circuit, referred to as: ASIC) etc..General processor can be microprocessor or the processor is also possible to
Any conventional processor etc..Hardware processor can be embodied directly in conjunction with the step of invention disclosed method to have executed
At, or in processor hardware and software module combination execute completion.
Memory may include high speed RAM memory, it is also possible to and it further include non-volatile memories NVM, for example, at least one
Magnetic disk storage.
Bus can be industry standard architecture (Industry Standard Architecture, ISA) bus, outer
Portion's apparatus interconnection (Peripheral Component, PCI) bus or extended industry-standard architecture (Extended
Industry Standard Architecture, EISA) bus etc..Bus can be divided into address bus, data/address bus, control
Bus etc..For convenient for indicating, the bus in illustrations does not limit only a bus or a type of bus.
The embodiment of the present invention also provides a kind of computer readable storage medium, stores in the computer readable storage medium
There are computer executed instructions, when processor executes the computer executed instructions, realizes the skill of any of the above-described embodiment of the method
Art scheme.
Above-mentioned computer readable storage medium, above-mentioned readable storage medium storing program for executing can be by any kind of volatibility or non-
Volatile storage devices or their combination realize that, such as static random access memory (SRAM), electrically erasable is only
It reads memory (EEPROM), Erasable Programmable Read Only Memory EPROM (EPROM), programmable read only memory (PROM) is read-only to deposit
Reservoir (ROM), magnetic memory, flash memory, disk or CD.Readable storage medium storing program for executing can be general or specialized computer capacity
Any usable medium enough accessed.
A kind of illustrative readable storage medium storing program for executing is coupled to processor, to enable a processor to from the readable storage medium storing program for executing
Information is read, and information can be written to the readable storage medium storing program for executing.Certainly, readable storage medium storing program for executing is also possible to the composition portion of processor
Point.Processor and readable storage medium storing program for executing can be located at specific integrated circuit (Application Specific Integrated
Circuits, referred to as: ASIC) in.Certainly, processor and readable storage medium storing program for executing can also be used as discrete assembly and be present in equipment
In.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above-mentioned each method embodiment can lead to
The relevant hardware of program instruction is crossed to complete.Program above-mentioned can be stored in a computer readable storage medium.The journey
When being executed, execution includes the steps that above-mentioned each method embodiment to sequence；And storage medium above-mentioned include: ROM, RAM, magnetic disk or
The various media that can store program code such as person's CD.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of touch identification method of capacitance touch screen characterized by comprising
Obtain the mutual capacitance value of each touch point of the capacitance touch screen and the quadrangle current value of the capacitance touch screen；
Situation of change and the quadrangle current value according to each mutual capacitance value relative to mutual capacitance a reference value, determine institute
The touch mode of capacitance touch screen is stated, the touch mode is one of following: water droplet touches, finger touches, wet hand touches；
Wherein, the mutual capacitance a reference value is the mutual capacitance value of the capacitance touch screen each touch point when not touched；
According to the touch mode of the capacitance touch screen, the position of touch point is determined.
2. the method according to claim 1, wherein the touch mode according to the capacitance touch screen, really
Determine the position of touch point, comprising:
If the touch mode of the capacitance touch screen is the touch of wet hand, according to each mutual capacitance value, the mutual capacitance benchmark
Value and the quadrangle current value, determine the position of touch point.
3. the method according to claim 1, wherein it is described according to each mutual capacitance value relative to mutual capacitance base
The situation of change of quasi- value and the quadrangle current value, determine the touch mode of the capacitance touch screen, comprising:
If each mutual capacitance value meets the first preset condition, and the quadrangle current value is greater than first threshold, it is determined that described
The touch mode of capacitance touch screen is the touch of wet hand；
Wherein, first preset condition are as follows: at least partly described mutual capacitance value is greater than the mutual capacitance a reference value, and, at least
The distribution of the part mutual capacitance value is distributed in the conical surface of opening upwards.
4. the method according to claim 1, wherein it is described according to each mutual capacitance value relative to mutual capacitance base
The situation of change of quasi- value and the quadrangle current value, determine the touch mode of the capacitance touch screen, comprising:
If each mutual capacitance value is respectively less than the mutual capacitance a reference value, and the quadrangle current value is greater than second threshold and is less than
First threshold, it is determined that the touch mode of the capacitance touch screen is finger touch；
If each mutual capacitance value is all larger than the mutual capacitance a reference value, and the quadrangle current value is greater than second threshold and is less than
First threshold, it is determined that the touch mode of the capacitance touch screen is water droplet touch；
The second threshold is less than the first threshold.
5. according to the method described in claim 2, it is characterized in that, described according to each mutual capacitance value, the mutual capacitance base
Quasi- value and the quadrangle current value, determine the position of touch point, comprising:
According to each mutual capacitance value, mutual capacitance minimum value, mutual capacitance mean value and mutual capacitance change rate are obtained；
According to the mutual capacitance minimum value, the mutual capacitance mean value, the mutual capacitance change rate, the mutual capacitance a reference value and mutually
Capacitor empirical value, determines the position of touch point, and the mutual capacitance empirical value is used to indicate finger under finger touch mode and is touched
Touch point mutual capacitance value.
6. according to the method described in claim 5, it is characterized in that, described according to the mutual capacitance minimum value, the mutual capacitance
Mean value, the mutual capacitance change rate, the mutual capacitance a reference value and mutual capacitance empirical value, determine the position of touch point, comprising:
If the mutual capacitance minimum value is less than the mutual capacitance a reference value, according to the mutual capacitance minimum value, the mutual capacitance
Mean value and the mutual capacitance empirical value determine mutual capacitance value to be modified and are modified to the mutual capacitance value to be modified；
According to the mutual capacitance value of revised each touch point, the position of touch point is determined.
7. according to the method described in claim 5, it is characterized in that, described according to the mutual capacitance minimum value, the mutual capacitance
Mean value, the mutual capacitance change rate, the mutual capacitance a reference value and mutual capacitance empirical value, determine the position of touch point, comprising:
If the mutual capacitance minimum value is greater than the mutual capacitance a reference value, and, the mutual capacitance change rate is greater than third threshold value,
And the absolute value of the difference of the mutual capacitance mean value and the mutual capacitance a reference value is greater than the mutual capacitance a reference value and the mutual electricity
Hold the absolute value of the difference of empirical value, then determines the position of the first candidate touch point according to the quadrangle current value；
According to minimum value, the minimum of each capacitance, the position of the second candidate touch point is determined；
According to the position of the position of the described first candidate touch point and the second candidate touch point, the position of the touch point is determined
It sets.
8. a kind of touch recognition device of capacitance touch screen characterized by comprising
Module is obtained, for obtaining the mutual capacitance value and the capacitance touch screen of each touch point of the capacitance touch screen
Quadrangle current value；
First determining module, for according to each mutual capacitance value relative to the situation of change of mutual capacitance a reference value and described
Quadrangle current value determines that the touch mode of the capacitance touch screen, the touch mode are one of following: water droplet touch,
Finger touches, wet hand touches；Wherein, the mutual capacitance a reference value is the capacitance touch screen each touch point when not touched
Mutual capacitance value；
Second determining module determines the position of touch point for the touch mode according to the capacitance touch screen.
9. a kind of electronic equipment, including capacitance touch screen, which is characterized in that further include: at least one processor and memory；
The memory stores computer executed instructions；
At least one described processor executes the computer executed instructions of the memory storage, so that at least one described processing
Device executes method as described in any one of claim 1 to 7.
10. a kind of computer readable storage medium, which is characterized in that be stored with computer in the computer readable storage medium
It executes instruction, when processor executes the computer executed instructions, realizes method as described in any one of claim 1 to 7.
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