CN109445630A - Touch key-press panel and touch key-press method - Google Patents
Touch key-press panel and touch key-press method Download PDFInfo
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- CN109445630A CN109445630A CN201811221510.6A CN201811221510A CN109445630A CN 109445630 A CN109445630 A CN 109445630A CN 201811221510 A CN201811221510 A CN 201811221510A CN 109445630 A CN109445630 A CN 109445630A
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- Prior art keywords
- touch key
- detecting electrode
- capacitor
- surface layer
- key
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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
- G06F3/0412—Digitisers structurally integrated in a display
-
- 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
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
-
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/96—Touch switches
- H03K17/962—Capacitive touch switches
- H03K17/9622—Capacitive touch switches using a plurality of detectors, e.g. keyboard
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04104—Multi-touch detection in digitiser, i.e. details about the simultaneous detection of a plurality of touching locations, e.g. multiple fingers or pen and finger
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Push-Button Switches (AREA)
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
Abstract
The embodiment of the invention discloses a kind of touch key-press panel, this method comprises: pcb board, at least one detecting electrode is provided in the one side of the pcb board;Matallic surface layer is set to the one side that the pcb board has detecting electrode, has setting spacing, and the matallic surface layer floating between matallic surface layer and the detecting electrode;The matallic surface layer is provided at least one consistent pierced pattern corresponding with the position of the detecting electrode as key;The detecting electrode and matallic surface layer form the first capacitor that can be detected;The detecting electrode and the finger surface for touching pierced pattern form the second capacitor that can be detected.The embodiment of the invention provides a kind of touch key-press panel and touch key-press methods, realize the shielding to electromagnetic interference, improve the safety of touch key-press panel.Also, improve the structural strength of touch key-press panel.
Description
Technical field
The present embodiments relate to touch key-press technology more particularly to a kind of touch key-press panel and touch key-press methods.
Background technique
With the development of science and technology, touch key-press panel has obtained extensively in the electronic equipments such as intelligent door lock, elevator
Application.
At present, it is common to use touch key-press panel mainly include the light guide plate of plastics or acrylic material, be provided with touching
Touch the pcb board and illuminator of key press detecting circuit.
When we are when using such touch key-press panel, it usually needs press specific key wake up touch by
The detection of key is very inconvenient in operation.Further, since the plastics or acrylic material as light guide plate cannot shield electricity
Magnetic disturbance influences the detection to capacitance variations, to make so above-mentioned touch key-press panel is highly susceptible to external electromagnetic attack
, there is safety difference in the maloperation of key in pairs of touch key-press panel.Meanwhile this kind of touch key-press panel there is also
The problem of structural strength is weak, cracky.
Summary of the invention
The embodiment of the present invention provides a kind of touch key-press panel and touch key-press method, is called out with simplifying the touch of detection key
It wakes up and operates, realize the shielding to electromagnetic interference, improve the safety of touch key-press panel.Also, improve touch key-press panel
Structural strength.
In a first aspect, the embodiment of the invention provides a kind of touch key-press panels, comprising:
Pcb board is provided at least one detecting electrode in the one side of the pcb board;
Matallic surface layer, is set to the one side that the pcb board has detecting electrode, matallic surface layer and the detecting electrode it
Between there is setting spacing, and the matallic surface layer floating;
The matallic surface layer is provided at least one consistent pierced pattern corresponding with the position of the detecting electrode and makees
For key;
The detecting electrode and matallic surface layer form the first capacitor that can be detected;
The detecting electrode and the finger surface for touching pierced pattern form the second capacitor that can be detected.
Optionally, the pcb board is printed with touch key-press detection circuit, if the touch key-press detection circuit is for detecting
It is greater than the threshold value of setting to the first capacitor between the matallic surface layer and the detecting electrode, then to the second electricity of each key
Appearance is detected.
Optionally, the shape of the detecting electrode is consistent with the pierced pattern.
Optionally, be provided at least one illuminator in the one side of the pcb board, wherein each illuminator be arranged close in
Each corresponding detecting electrode.
Optionally, the pierced pattern is the number for having mark action, symbol and/or setting pattern.
Optionally, the matallic surface layer generates first capacitor as between shared electrode and each detecting electrode.
Second aspect, the embodiment of the invention also provides a kind of touch key-press methods, comprising:
Detection matallic surface layer and detecting electrode between first capacitor capacitance whether be more than setting threshold value;
If so, triggering detects the second capacitor of each key.
Optionally, if so, triggering the second capacitor of each key is detected after, further includes:
Detection is touched whether there is the second capacitor between the finger surface and detecting electrode of pierced pattern;
If detecting second capacitor, the corresponding key command of the pierced pattern is triggered.
Surface of the embodiment of the present invention by using metal as touch key-press panel shields extraneous electromagnetic interference,
External electromagnetic is avoided to improve the safety of touch key-press panel to the attack of touch key-press panel.Also, because metal material
Have the characteristics that structural strength is big, so also improving the structural strength of touch key-press panel.
In addition, user touches matallic surface layer, matallic surface layer is arranged by floating generates first between detecting electrode
Capacitor, detecting electrode and the finger surface for touching pierced pattern form the second capacitor that can be detected.So that being based on first
Capacitor and the second capacitor, if the threshold for detecting that the first capacitor between matallic surface layer and detecting electrode is greater than setting can be executed
Value is then opened and is detected to the second capacitor of each key, and the arbitrary region for realizing user's touch matallic surface layer is ok
Start the detection to each key, so that very convenient to the wake operation of each key detection.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram for touch key-press panel that the embodiment of the present invention one provides;
Fig. 2 is a kind of structural schematic diagram of touch key-press panel provided by Embodiment 2 of the present invention;
Fig. 3 is the structural schematic diagram of matallic surface layer in a kind of touch key-press panel provided by Embodiment 2 of the present invention;
Fig. 4 is the structural schematic diagram of pcb board in a kind of touch key-press panel provided by Embodiment 2 of the present invention;;
Fig. 5 is the structural schematic diagram of light guide plate in a kind of touch key-press panel provided by Embodiment 2 of the present invention;
Fig. 6 is a kind of structural schematic diagram of luminous touch key-press panel provided by Embodiment 2 of the present invention;
Fig. 7 is a kind of flow chart for touch key-press method that the embodiment of the present invention three provides;
Fig. 8 is a kind of flow chart for touch key-press method that the embodiment of the present invention four provides.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
Embodiment one
Fig. 1 is a kind of structural schematic diagram for touch key-press panel that the embodiment of the present invention one provides.The present embodiment can be applied
In the electronic equipments such as smart lock, elevator, safety box.User is touched by the matallic surface layer to touch key-press panel,
To wake up the detection of touch key-press.Referring to Fig. 1, the touch key-press panel that the present embodiment 1 provides includes: matallic surface layer 1, PCB
Plate 3 and detecting electrode 31.
Wherein, at least one detecting electrode 31 is provided in the one side of pcb board 3.
Matallic surface layer 1 is set to the one side for being provided with detecting electrode 31 of pcb board 3, and matallic surface layer 1 is provided with and examines
The position for surveying electrode 31 corresponds at least one consistent pierced pattern as key, for realizing by touching pierced pattern to phase
Answer the triggering of key.Wherein there is between matallic surface layer 1 and detecting electrode 31 setting spacing, and 1 floating of matallic surface layer.
The detecting electrode 31 forms the first capacitor that can be detected with matallic surface layer 1.When finger touches metal surface
When layer 1, matallic surface layer 1 is connected to ground, and first capacitor can change.
Typically, above-mentioned matallic surface layer 1 generates first capacitor as between shared electrode and each detecting electrode 31.Work as hand
Refer to touch matallic surface layer 1 key (namely in the matallic surface layer it is corresponding with the position of the detecting electrode it is consistent extremely
A few pierced pattern) when, detecting electrode 31 and the finger surface for touching pierced pattern form the second capacitor that can be detected.
Typically, the pcb board 3 is printed with touch key-press detection circuit, if the touch key-press detection circuit is for examining
The threshold value that the first capacitor between the matallic surface layer 1 and the detecting electrode 31 is greater than setting is measured, then to each key
Second capacitor is detected.
Touch key-press detection circuit may be implemented user touch matallic surface layer 1 arbitrary region can wake up touch by
Detection of the key detection circuit to each key, so that wake operation is very convenient.
The technical solution of the embodiment of the present invention, the surface using metal as touch key-press panel shield extraneous electricity
Magnetic disturbance avoids external electromagnetic from improving the safety of touch key-press panel to the attack of touch key-press panel.Also, because
Metal material has the characteristics that structural strength is big, so also improving the structural strength of touch key-press panel.
In addition, user touches matallic surface layer, matallic surface layer is arranged by floating generates first between detecting electrode
Capacitor, detecting electrode and the finger surface for touching pierced pattern form the second capacitor that can be detected.So that being based on first
Capacitor and the second capacitor, if the threshold for detecting that the first capacitor between matallic surface layer and detecting electrode is greater than setting can be executed
Value is then opened and is detected to the second capacitor of each key, and the arbitrary region for realizing user's touch matallic surface layer is ok
Start the detection to each key, so that very convenient to the wake operation of each key detection.
Optionally, the shape of the detecting electrode can be the arbitrary shape for covering the pierced pattern.To save production
Cost, the shape of the detecting electrode is consistent with the pierced pattern, so that finger is when touching pierced pattern, with detection
Capacitor is formed between electrode.The touching to the corresponding touch key-press of pierced pattern is realized to the variation by the capacitor detected
Hair.
Optionally, the pierced pattern is the number for having mark action, symbol and/or setting pattern.
Further, at least one connecting with touch key-press detection circuit is provided in the one side of the pcb board to shine
Body, wherein each illuminator is arranged close in each corresponding detecting electrode.
Preferably, matallic surface layer is bigger using hardness, and the metal material of electromagnetism interference.For example, stainless steel
Plate, aluminium alloy etc., the big metal material of hardness can be enhanced the structural strength of touch key-press panel, and equipment not cracky extends
Longer life expectancy.
Preferably, the thickness range of matallic surface layer is 0.2 millimeter to 0.6 millimeter.
In order to save production cost, matallic surface layer can be wholely set with the metal surface of equipment.Matallic surface layer can be with
The integrated setting in the metal surface of equipment can be detained dust namely convenient for cleaning to avoid the gap of junction.
Embodiment two
Fig. 2 is a kind of structural schematic diagram of touch key-press panel provided by Embodiment 2 of the present invention.The present embodiment is upper
State a kind of optinal plan proposed on the basis of embodiment.Referring to fig. 2, touch key-press panel provided in this embodiment includes: gold
Metal surface layer 1, light guide plate 2 and pcb board 3.
Wherein, pcb board 3 are printed with touch key-press detection circuit on pcb board 3.At least one is provided in the one side of pcb board 3
A detecting electrode 31.
Specifically, touch key-press detection circuit judges key by micro-control unit (Micro Control Unit, MCU)
Whether it is triggered.
Detecting electrode 31 is formed by pcb board 3 by the method that copper is covered on surface.Optionally, it can be formed with other modes, this
Embodiment is to this and without any restrictions.
Light guide plate 2, the corresponding one side for being provided with detecting electrode for fitting in pcb board 3, distributes for transmission equipment inner light source
Light out.
Referring to figs. 2 and 3, matallic surface layer 1, the one side of the corresponding separate pcb board 3 for fitting in light guide plate 2, metal surface
Layer 1 is provided at least one consistent pierced pattern 12 corresponding with the position of detecting electrode 31, and each pierced pattern 12 is equivalent to
One touch key-press, for by touching triggering of the realization of pierced pattern 12 to respective keys.
Optionally, which is number, symbol and/or the pattern of setting of mark action.
With continued reference to Fig. 2, the hollowed out area of matallic surface layer 1 is filled using anisotropic acrylic 11.Metal surface
Layer 1, optical waveguide layer 2, pcb board 3 are arranged successively in accordance with the order from top to bottom.
The technical solution of the embodiment of the present invention, the surface by using metal as touch key-press panel, shields the external world
Interference of the electromagnetism to internal detecting electrode, enhances the safety of touch key-press panel.In addition, hard metal surface enhances
The structural strength of touch key-press panel makes its not cracky, prolongs its service life.
When the hollowed out area of the matallic surface layer of finger touching simultaneously, the second capacitor can be generated between finger and detecting electrode,
And there is a certain distance between finger and detecting electrode, which improves the penetration power of detection.Also, matallic surface layer
Shielding to external electromagnetic, so that MCU is not necessarily to be timed amendment to interference electromagnetism threshold value according to external electromagnetic interference, with mistake
It is filtered dry and disturbs electromagnetism.Because for according to external electromagnetic interference due to interference electromagnetism threshold value be timed amendment, so also reducing simultaneously
The overall power of touch key-press panel.
Preferably, the thickness range of the light guide plate is 1 millimeter to 6 millimeters.
To light touch key-press, referring to fig. 4 and Fig. 5, it is provided at least one illuminator 32 on pcb board 3, light guide plate 2 is right
At least one blind hole 21. should be set
Wherein, the one side that the pcb board 3 is provided with detecting electrode 31 is arranged in illuminator 32.Illuminator 32 is pressed with touch
Key detection circuit is electrically connected.Wherein each illuminator 32 is arranged close to by each corresponding detecting electrode 31.It is typical
Ground, illuminator 32 can be LED.
The one side that the light guide plate 2 is bonded with the pcb board 3 is arranged in blind hole 21, for accommodating on the pcb board 3
Illuminator 32, so that the light of the illuminator 32 is appeared through the light guide plate 2 from the pierced pattern 12.Wherein, blind hole
21 size, number and position each depends on size, number and the position that illuminator 32 is arranged in pcb board 3.
It should be further noted that illuminator 32 can also be correspondingly disposed in the two sides of light guide plate 2 referring to Fig. 6, this
Shi Ze does not need that corresponding blind hole 21 is arranged on light guide plate 2.Light guide plate 2 has good light conductivity, the material of the light guide plate
It can be acrylic, it being capable of light source is issued in transmission equipment light.
Embodiment three
Fig. 7 is a kind of flow chart for touch key-press method that the embodiment of the present invention three provides.The present embodiment can be adapted for
The case where touch key-press detection wakes up.This method can be executed by a kind of touch button device, the device can by software and/
Or the mode of hardware is realized.Typically, this method can be realized with touch key-press panel provided by the above embodimen.Referring to Fig. 7,
Touch key-press method provided in this embodiment includes:
S110, detection matallic surface layer and detecting electrode between first capacitor capacitance whether be more than setting threshold value.
When user touches matallic surface layer, matallic surface layer is connected by user and the earth at this time, at this time metal surface
From as a first capacitor that can be detected is generated between shared electrode and detecting electrode, the detection of touch key-press detection circuit is golden
Between metal surface layer and detecting electrode the capacitance of first capacitor whether be more than setting threshold value.
S120, the second capacitor of each key is detected if so, triggering.
Specifically, detect that first capacitor illustrates that user touches matallic surface layer.The electricity of touch key-press detection at this time
Road is opened and is detected to the second capacitor of each key, realizes the wake operation of touch key-press panel.
Whether the embodiment of the present invention is surpassed by the capacitance of the first capacitor between detection matallic surface layer and detecting electrode
The threshold value of setting is crossed, touch key-press panel is realized in detection of the Lai Kaiqi touch key-press detection circuit to the second capacitor of each key
Wake operation.Touch key-press detection circuit can be waken up to respectively pressing to realize that user touches the arbitrary region of matallic surface layer
The detection of key, so that wake operation is very convenient.
Example IV
Fig. 8 is a kind of flow chart for touch key-press method that the embodiment of the present invention four provides.The present embodiment is in above-mentioned reality
Apply a kind of optinal plan proposed on the basis of example three.Include: referring to Fig. 8 touch key-press method provided in this embodiment
S210, detection are touched whether there is the second capacitor between the finger surface and detecting electrode of pierced pattern.
Specifically, when there is finger to press the hollowed out area in key panel, meeting between finger and corresponding detecting electrode
Capacitor is generated, which is the second capacitor.
If S220, detecting second capacitor, the corresponding key command of the pierced pattern is triggered.
Specifically, if detecting corresponding second capacitor of certain pierced pattern, it is determined that touch of the user to the pierced pattern
Or press, to trigger the corresponding instruction of the pierced pattern.
For example, finger touches the finger on the pierced pattern of 1 printed words of number of touch key-press panel by taking smart lock as an example
The second capacitor is formed between detecting electrode.If detecting second capacitor, the instruction for executing input number 1 is triggered.
The technical solution of the embodiment of the present invention passes through the second capacitor between the button object and detecting electrode on pierced pattern
The presence or absence of realize triggering and execution to the corresponding key command of pierced pattern.To realize touch key-press effect.
But in touch key-press, it is frequently encountered when touching target key, while having touched the feelings of other keys
Condition.
Based on the above situation, the detection efficiency to improve touch key-press.It detects second capacitor, is then engraved described in triggering
The corresponding key command of null pattern includes:
If detecting at least two second capacitors between button object and at least two detecting electrodes, relatively it is described at least
The capacitance of two the second capacitors;
Using the corresponding detecting electrode of maximum second capacitor of capacitance as target detection electrode;
Trigger the corresponding key command of target detection electrode.
Because inventor's discovery touches the touch area phase of target key in user by finger when touching multiple keys
To bigger, so that the capacitance of the second capacitor detected is also bigger.So the comparison of the capacitance by the second capacitor
It can determine target key, and then realize the triggering to target key.
The key being triggered is determined by the comparison to multiple capacitance variations values, which can support that multiple spot is same
When incude.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (8)
1. a kind of touch key-press panel characterized by comprising
Pcb board is provided at least one detecting electrode in the one side of the pcb board;
Matallic surface layer is set to the one side that the pcb board has detecting electrode, has between matallic surface layer and the detecting electrode
There are setting spacing, and the matallic surface layer floating;
The matallic surface layer be provided at least one consistent pierced pattern corresponding with the position of the detecting electrode be used as by
Key;
The detecting electrode and matallic surface layer form the first capacitor that can be detected;
The detecting electrode and the finger surface for touching pierced pattern form the second capacitor that can be detected.
2. touch key-press panel according to claim 1, which is characterized in that the pcb board is printed with touch key-press detection
Circuit, if the touch key-press detection circuit is used to detect the first electricity between the matallic surface layer and the detecting electrode
Hold the threshold value for being greater than setting, then the second capacitor of each key is detected.
3. touch key-press panel according to claim 1, which is characterized in that the shape of the detecting electrode and the hollow out
Pattern is consistent.
4. touch key-press panel according to claim 1, which is characterized in that be provided at least in the one side of the pcb board
One illuminator, wherein each illuminator is arranged close in each corresponding detecting electrode.
5. touch key-press panel according to claim 1, which is characterized in that the pierced pattern is the number for having mark action
Word, symbol and/or setting pattern.
6. touch key-press panel according to claim 1, which is characterized in that the matallic surface layer as shared electrode with
First capacitor is generated between each detecting electrode.
7. a kind of touch key-press method is applied to touch key-press panel as claimed in any one of claims 1 to 6, which is characterized in that
Comprising steps of
Detection matallic surface layer and detecting electrode between first capacitor capacitance whether be more than setting threshold value;
If so, triggering detects the second capacitor of each key.
8. the method according to the description of claim 7 is characterized in that if so, triggering carries out the second capacitor of each key
After detection, further includes:
Detection is touched whether there is the second capacitor between the finger surface and detecting electrode of pierced pattern;
If detecting second capacitor, the corresponding key command of the pierced pattern is triggered.
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CN113874308A (en) * | 2019-04-30 | 2021-12-31 | 因温特奥股份公司 | Elevator operation panel and operation method thereof |
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CN113874308A (en) * | 2019-04-30 | 2021-12-31 | 因温特奥股份公司 | Elevator operation panel and operation method thereof |
CN113874308B (en) * | 2019-04-30 | 2023-07-25 | 因温特奥股份公司 | Elevator operation panel and operation method thereof |
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Application publication date: 20190308 |