CN102332905A - Key signal input device, key signal input method and key board - Google Patents
Key signal input device, key signal input method and key board Download PDFInfo
- Publication number
- CN102332905A CN102332905A CN201110302339A CN201110302339A CN102332905A CN 102332905 A CN102332905 A CN 102332905A CN 201110302339 A CN201110302339 A CN 201110302339A CN 201110302339 A CN201110302339 A CN 201110302339A CN 102332905 A CN102332905 A CN 102332905A
- Authority
- CN
- China
- Prior art keywords
- signal
- input
- waveform
- push button
- keypad
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000011664 signaling Effects 0.000 claims description 75
- 238000009434 installation Methods 0.000 claims description 29
- 230000000052 comparative effect Effects 0.000 claims description 13
- 238000009413 insulation Methods 0.000 claims description 10
- 230000008676 import Effects 0.000 claims description 7
- 239000003990 capacitor Substances 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000005286 illumination Methods 0.000 description 4
- 238000012797 qualification Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 229910000737 Duralumin Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Images
Landscapes
- Switch Cases, Indication, And Locking (AREA)
Abstract
The invention discloses a key signal input device, a key signal input method and a key board. The key signal input method comprises the following steps of: 1) generating two lines of waveform signals with the same waveform, wherein the waveform of one line of the waveform signals can be interfered by an input key signal and becomes different from the waveform of the other line of the waveform signals; and 2) comparing the received two lines of the waveform signals: judging that the key signal is not input and outputting a first level signal when the waveforms of the received two lines of the waveform signals are same, and judging that the key signal is input and outputting a second level signal which is different from the first level signal when the waveforms of the received two lines of the waveform signals are different. By adopting the key signal input device, key signal input method and key board provided by the invention, the using area of a key circuit can be saved, the reliability is high, and the failure of keys can be effectively avoided.
Description
Technical field
The present invention relates to engineering machinery, particularly, relate to a kind of push button signalling input unit, push button signalling input method and keypad that is used for engineering machinery.
Background technology
In order to realize the operation control of operating personnel to engineering machinery; Existing engineering machinery; For example sub-base grader, excavator, cutting machine etc.; Be provided with keypad, said keypad is through will directly being welded on the button circuit board as the touch-switch of button, uses oak post and screw that button circuit board is fixed on then and forms on the installation panel.Yet; There is following problem in existing keypad: 1, existing keypad need be pushed button and realize that button triggers; Be out of shape when pushing for fear of keypad, cause keypad to sink, a plurality of fixing holes that are used for fixing touch-switch need be set on keypad; Reduce the usable floor area on the button circuit board thus, be unfavorable for the placement of components and parts; 2, because the distance between button circuit board and the installation panel is all definite by the height of oak post, exist a point tolerance will cause button malfunctioning, and the oak post in keypad centre position is adjusted also very trouble.
Summary of the invention
The purpose of this invention is to provide a kind of push button signalling input unit, a kind of push button signalling input method and a kind of keypad, the keypad that can solve existing engineering machinery is unfavorable for the bad control of distance between placement, button circuit board and the panel of components and parts, causes problems such as button is malfunctioning easily.
To achieve these goals; The invention provides a kind of push button signalling input unit; This input unit comprises signal generator and signal comparator; Said signal comparator has first input end, second input and output; The output of said signal generator is electrically connected with said signal comparator through the said first input end and second input, and said signal generator is used to generate waveform signal, and this waveform signal is input in the said signal comparator through the said first input end and second input; The first input end of said signal comparator also is used to import push button signalling; Said signal comparator is used for the waveform signal from the said first input end and second input is compared, and exports comparative result through said output: under the situation identical with the waveform signal waveform of second input from said first input end, said signal comparator is exported first level signal as said comparative result; Under the waveform signal waveform condition of different from the said first input end and second input, second level signal that said signal comparator output is different from first level signal is as said comparative result.
The present invention also provides a kind of push button signalling input method; This input method may further comprise the steps: generate the identical waveform signal of two-way waveform, the push button signalling that the waveform of wherein one road waveform signal of said two-way waveform signal can be transfused to disturbs and becomes different with the waveform of another road waveform signal; And the two-way waveform signal that receives compared: under the identical situation of the two-way waveform signal waveform that receives, judging does not have the push button signalling input, and exports first level signal; Under the two-way waveform signal waveform condition of different that receives, judging has the push button signalling input, and output is different from second level signal of first level signal.
The present invention also provides a kind of keypad; This keypad comprises button, push button signalling input unit and button circuit board; Said push button signalling input unit is a push button signalling input unit provided by the invention; Said button is the conduction button, and said push button signalling input unit is welded on the said button circuit board and electrically contacts with button input contact on the said button circuit board, and the first input end of the signal comparator in said button and the said push button signalling input unit is electrically connected.
Push button signalling input unit provided by the invention and push button signalling input method have utilized human body that the interference of waveform is realized that button triggers; Its technical scheme is: generate the identical waveform signal of two-way waveform; Road waveform signal wherein can be disturbed by the push button signalling by the input of conduction button; Waveform is identical has judged whether the push button signalling input through this two-way waveform signal relatively; And export different level signals as judged result, and come analogue-key to trigger thus, realize operation control to engineering machinery.Adopt push button signalling input unit provided by the invention and push button signalling input method, can import push button signalling through the conduction button, operating personnel only need touch the conduction button can cause interference to one road waveform signal; Judging thus has the push button signalling input, realizes that button triggers, and has avoided the extruding to button; Need not to be provided with a plurality of fixing holes; Can save the usable floor area of key circuit, and reliability is high, can avoid button malfunctioning effectively.
Other features and advantages of the present invention will partly specify in embodiment subsequently.
Description of drawings
Accompanying drawing is to be used to provide further understanding of the present invention, and constitutes the part of specification, is used to explain the present invention with following embodiment, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the structural representation of push button signalling input unit provided by the invention;
Fig. 2 is the flow chart of push button signalling input method provided by the invention;
Fig. 3 is the structural representation of keypad provided by the invention.
Description of reference numerals
1 signal generator, 2 signal comparators
3 filters, 4 openings
5 buttons, 6 push button signalling input units
7 button circuit boards, 8 hard laminates
9 insulation boards 10 are installed guide pillar
21 first input ends, 22 second inputs
23 output F push button signallings
Embodiment
Be elaborated below in conjunction with the accompanying drawing specific embodiments of the invention.Should be understood that embodiment described herein only is used for explanation and explains the present invention, is not limited to the present invention.
Technical scheme of the present invention is: generate the identical waveform signal of two-way waveform; Road waveform signal wherein can be disturbed by the push button signalling by the input of conduction button; Waveform is identical has judged whether the push button signalling input through this two-way waveform signal relatively; And export different level signals as judged result, and come analogue-key to trigger thus, realize operation control to engineering machinery.
Thus; The invention provides a kind of push button signalling input unit; As shown in Figure 1; This input unit comprises signal generator 1 and signal comparator 2, and said signal comparator 2 has first input end 21, second input 22 and output 23, and the output of said signal generator 1 is electrically connected with said signal comparator 2 through the said first input end 21 and second input 22; Said signal generator 1 is used to generate waveform signal; And this waveform signal is input in the said signal comparator 2 through the said first input end 21 and second input 22, the first input end 21 of said signal comparator 2 also is used to import push button signalling F, and said signal comparator 2 is used for the waveform signal from the said first input end 21 and second input 22 is compared; And through said output 23 output comparative results: under the situation identical with the waveform signal waveform of second input 22 from said first input end 21, said signal comparator 2 is exported first level signal as said comparative result; Under the waveform signal waveform condition of different from the said first input end 21 and second input 22, second level signal that said signal comparator 2 outputs are different from first level signal is as said comparative result.
According to technical scheme of the present invention; Signal comparator 2 receives the waveform signal that is generated by signal generator 1 through the first input end 21 and second input 22; And the first input end 21 of signal comparator 2 also is used to be connected to the button of engineering machinery, to be used to import push button signalling F.For the waveform signal through first input end 21 inputs is caused interference; To realize that button triggers; Said button is the conduction button, but its keytop process by electric conductor, through as the directly contact or touch keytop of the human body of conductor through conducting medium; Can import push button signalling F, thereby produce conduction interference the waveform signal of importing by first input end 21.
Thus, signal comparator 2 can judge whether push button signalling F input through the waveform signal from the first input end 21 and second input 22 is compared, and exports comparative results through output 23:
If it is identical with the waveform signal waveform of second input 22 from first input end 21; The waveform signal that shows first input end 21 inputs does not receive the interference from push button signalling F; Then the decision operation personnel do not have touch key-press, and signal comparator 2 outputs first level signal is as comparative result thus; If it is different with the waveform signal of second input 22 from first input end 21; The waveform signal that shows first input end 21 inputs has received the interference from push button signalling F; Then the decision operation personnel have touched button, thus signal comparator 2 output be different from first level signal second level signal as comparative result.
Said signal generator 1 can oneself not produce the signal source equipment of the output waveform signals with fixed frequency for not needing external signal arbitrarily, for example can be square wave signal generator or sine wave signal generator.Under the preferable case, said signal generator 1 is for being used to produce the square wave signal generator of the square wave with balancing waveform, for example square-wave oscillator circuit.
Said signal comparator 2 is electrically connected with said signal generator 1 through the first input end 21 and second input 22; For can two waveform signals of input being compared arbitrarily; And the output different level signals is as the signal comparator circuit of comparative result; It for example can be NOR gate circuit; Judge two waveform signals of input whether waveform is identical that the output low level signal is as judged result when two waveform signal waveforms identical (promptly importing identical) through carrying out two input XOR computings, the output high level signal is as judged result when two waveform signal waveforms different (promptly input is different); It perhaps can be same OR circuit; Through carry out two inputs with or logical operation judge two waveform signals of input whether waveform be identical that the output high level signal is as judged result when two waveform signal waveforms identical (promptly importing identical), the output low level signal is as judged result when two waveform signal waveforms different (promptly input is different).Said NOR gate circuit and be the logic gates commonly used that is used to realize basic logic operations in the integrated circuit application with OR circuit; Its structure and principle are conventionally known to one of skill in the art, for example can adopt the integrated gate circuit chip of CD4000 series to come as signal comparator 2.
Thus, first level signal that the button controller of engineering machinery can be through acquired signal comparator 2 output and second level signal are come whether touch key-press of decision operation personnel, and then the output control instruction corresponding, to realize the operation control to engineering machinery.
Voltage fluctuation for the push button signalling F that reduces input; Under the preferable case; First input end 21 places of said signal comparator 2 also are connected with a filter capacitor (not shown), and said push button signalling F is input to the first input end 21 of said signal comparator 2 through said filter capacitor.The capacitance of said filter capacitor can be selected according to the magnitude of voltage of the push button signalling F that imports, does not limit at this.
Produce burr when the saltus step for fear of the level signal of signal comparator 2 output; Cause interference to circuit; Under the preferable case, as shown in Figure 1, push button signalling input unit provided by the invention also comprises filter 3; This filter 3 is electrically connected with the output 23 of said signal comparator 2, is used for the level signal of said signal comparator 2 outputs is carried out denoising.
Said filter 3 is arbitrarily can be to being carried out Filtering Processing by the signal of signal comparator 2 output to eliminate the device of burr signal, RC filter circuit for example, and its structure and principle are that the signal processing technology those skilled in the art are known.Adopt the antijamming capability that filter 3 can intensifier circuit.
The present invention also provides a kind of push button signalling input method, and is as shown in Figure 2, and this input method may further comprise the steps:
Generate the identical waveform signal of two-way waveform, the push button signalling that the waveform of wherein one road waveform signal of said two-way waveform signal can be transfused to disturbs and becomes different with the waveform of another road waveform signal; And the two-way waveform signal that receives compared: under the identical situation of the two-way waveform signal waveform that receives, judging does not have the push button signalling input, and exports first level signal; Under the two-way waveform signal waveform condition of different that receives, judging has the push button signalling input, and output is different from second level signal of first level signal.
According to technical scheme of the present invention; Can judge whether the push button signalling input through the identical waveform signal of two-way waveform that generates is compared: if two-way waveform signal waveform is identical; Show that wherein one road waveform signal does not receive the interference from push button signalling; Then judging does not have the push button signalling input, exports first level signal thus; If two-way waveform signal waveform is different, show that wherein one road waveform signal has received the interference from push button signalling, then judging has the push button signalling input, exports second level signal thus.
Thus,, just can judge whether button is touched through gathering first level signal and second level signal of being exported, and then the operation control of performance of work machinery accordingly.
Said two-way waveform signal can be square-wave signal or sine wave signal, and under the preferable case, said two-way waveform signal is a square-wave signal.
For the burr in the level signal of removing output, to avoid interference, under the preferable case, push button signalling input method provided by the invention is further comprising the steps of: first level signal or second level signal to output are carried out denoising.
The present invention also provides a kind of keypad; As shown in Figure 3; This keypad comprises button 5, push button signalling input unit 6 and button circuit board 7; Said push button signalling input unit 6 is a push button signalling input unit provided by the invention; Said button 5 is the conduction button, and said push button signalling input unit 6 is welded on the said button circuit board 7 and electrically contacts with button input contact on the said button circuit board 7, and the first input end 21 of the signal comparator 2 in said button 5 and the said push button signalling input unit 6 is electrically connected.
Owing to adopted push button signalling input unit provided by the invention; When operating personnel's touch key-press; Push button signalling F can disturb the waveform signal by first input end 21 inputs; Whether the waveform of two-way waveform signal that thus can be through relatively being input to signal comparator 2 identical has judged whether push button signalling F input to realize that thus button triggers.
Push button signalling input unit provided by the invention, input method and keypad have utilized human body that the interference of waveform is realized that button triggers; Adopt push button signalling input unit provided by the invention, input method and keypad; The conductive contact surfaces that operating personnel only need touch button 5 can be realized the triggering of button 5; Avoided extruding, need not on keypad, to be provided with a plurality of fixing holes and fix button 5, can save the usable floor area of button circuit board button 5; And reliability is high, can avoid button 5 malfunctioning effectively.
For push button signalling input unit 6 and button 5 are fixed; Keypad provided by the invention also comprises installation panel, the last installation panel with opening 4 and installation guide pillar 10 down; Said button circuit board 7 through install guide pillar 10 be fixedly mounted on said go up installation panel with said down between the installation panel forming layer structure, and make said button 5 be embedded in the said opening 4 of said upward installation panel.
Fracture for fear of keypad, under the preferable case, said installation guide pillar 10 has multirow, and the setting of staggering between row and the row.The method to set up that adopts every trade to stagger is installed between the guide pillar 10 and can be formed the triangle layout, can improve the bending strength of keypad thus.
For bending strength that guarantees keypad and the insulation property that guarantee button circuit board 7; More preferably under the situation; Said upward installation panel and said installation panel down are the layer structure that comprises hard laminate 8 and insulation board 9; And said insulation board 9 is as shown in Figure 3 between said button circuit board 7 and said hard laminate 8.Said hard laminate 8 can adopt the hard material of any high rigidity to process, and utilization can be adopted the duralumin plate of thickness for 2-5mm.The said thickness of going up the hard laminate 8 in installation panel and the following installation panel can confirm according to the needs of actual conditions, and can be for identical or different, and the present invention does not carry out any qualification to it.In order to guarantee the insulation property of button circuit board 7, the said installation panel of going up comprises insulation board 9 with following installation panel, and this insulation board 9 is arranged between hard laminate 8 and the button circuit board 7, is used for realizing the conduction isolation.Said insulation board 9 can be processed by any insulating material, and its thickness can confirm that for example can be 1-3mm, the present invention does not carry out any qualification to it according to the needs of actual conditions.
In order to guarantee the anti-seismic performance of keypad, under the preferable case, said installation guide pillar 10 is provided with elastic washer with the junction of said button circuit board 7.Said elastic washer is a damper element commonly used in this area, and its principle is conventionally known to one of skill in the art.Becoming flexible or fracture of the installation guide pillar 10 that causes greatly owing to vibrations when the setting of elastic washer can be avoided engineering machinery work increased the anti-seismic performance of keypad.
Because engineering machinery often need for operating personnel, usually owing to button 5 settings that can't see clearly on the keypad cause misoperation, be easy to take place security incident in the occasion construction of night or lighting condition difference.In order to improve safety of construction, under the preferable case, keypad provided by the invention also comprises the LED-backlit lamp, and said LED-backlit lamp is arranged on said the above opening 4 side of installation panel of going up.
Can be at each said opening 4 other LED-backlit lamp that are provided with, so that the button 5 that embeds in the said opening 4 is thrown light on.In order to improve brightness, can select the LED-backlit lamp of high brightness, and can increase and decrease setting the number of LED-backlit lamp, the present invention does not carry out any qualification to it.
Can be by operating personnel's manually opened LED-backlit lamp when illuminance is not enough, to realize illumination to button 5.Operating personnel's operation for ease can realize through pulse width modulation (PWM) the opening and closing of LED-backlit lamp.Therefore, under the preferable case, the opening and closing of said LED-backlit lamp can be controlled through pulse width modulation (PWM) signal.Through regulating the duty ratio of pwm control signal, can control the conducting and the turn-off time of LED-backlit lamp, PWM control is control method commonly used in the power electronics control field, its principle is conventionally known to one of skill in the art.
Energy-conservation in order under the situation of handled easily personnel work, to realize; Under the preferable case; Said keypad also comprises light control sensor, and this light control sensor is electrically connected with said LED-backlit lamp, and this light control sensor is used for regulating according to the illuminance of external environment the brightness of said LED-backlit lamp.Said light control sensor is the illumination probe that utilizes the photovoltaic special efficacy of photodiode to make; When the illumination probe receives a certain amount of illuminance; With photoelectric effect is the basis, converts light signal to the signal of telecommunication and outputs to the electric elements that are attached thereto, so that these electric elements are carried out various control procedures; Realize light control functionality, its operation principle is conventionally known to one of skill in the art.Therefore; Can light control sensor be electrically connected with said LED-backlit lamp, regulate the brightness of LED-backlit lamp, when the illuminance of external environment is sufficient through the illuminance of external environment; The brightness of LED-backlit lamp is turned down; When the illuminance of external environment is not enough, the brightness of LED-backlit lamp is heightened, be the operation push-button plate provide realize under the situation of adequate illumination energy-conservation.
More than combine accompanying drawing to describe preferred implementation of the present invention in detail; But; The present invention is not limited to the detail in the above-mentioned execution mode; In technical conceive scope of the present invention, can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
Need to prove that in addition each the concrete technical characterictic described in above-mentioned embodiment under reconcilable situation, can make up through any suitable manner.
In addition, also can carry out combination in any between the various execution mode of the present invention, as long as it is without prejudice to thought of the present invention, it should be regarded as the disclosed content of the present invention equally.
Claims (15)
1. push button signalling input method, wherein, this input method may further comprise the steps:
Generate the identical waveform signal of two-way waveform, the push button signalling that the waveform of wherein one road waveform signal of said two-way waveform signal can be transfused to disturbs and becomes different with the waveform of another road waveform signal; And
Two-way waveform signal to receiving compares:
Under the identical situation of the two-way waveform signal waveform that receives, judging does not have the push button signalling input, and exports first level signal;
Under the two-way waveform signal waveform condition of different that receives, judging has the push button signalling input, and output is different from second level signal of first level signal.
2. input method according to claim 1, wherein, the two-way waveform signal in the step 1) is square-wave signal or sine wave signal.
3. input method according to claim 1, wherein, this input method is further comprising the steps of:
First level signal or second level signal to said output are carried out denoising.
4. push button signalling input unit; Wherein, This input unit comprises signal generator (1) and signal comparator (2); Said signal comparator (2) has first input end (21), second input (22) and output (23); The output of said signal generator (1) is electrically connected with said signal comparator (2) through said first input end (21) and second input (22); Said signal generator (1) is used to generate waveform signal, and this waveform signal is input in the said signal comparator (2) through said first input end (21) and second input (22), and the first input end (21) of said signal comparator (2) also is used to import push button signalling (F); Said signal comparator (2) is used for the waveform signal from said first input end (21) and second input (22) is compared, and exports comparative result through said output (23):
Under the situation identical with the waveform signal waveform of second input (22) from said first input end (21), said signal comparator (2) output first level signal is as said comparative result;
Under the waveform signal waveform condition of different from said first input end (21) and second input (22), second level signal that said signal comparator (2) output is different from first level signal is as said comparative result.
5. input unit according to claim 4; Wherein, The first input end (21) of said signal comparator (2) locates also to be connected with a filter capacitor, and said push button signalling (F) is input to the first input end (21) of said signal comparator (2) through said filter capacitor.
6. input unit according to claim 4, wherein, said signal generator (1) is square wave signal generator or sine wave signal generator.
7. input unit according to claim 4, wherein, said signal comparator (2) is NOR gate circuit or is same OR circuit.
8. input unit according to claim 4; Wherein, This input unit also comprises filter (3), and this filter (3) is electrically connected with the output (23) of said signal comparator (2), is used for the level signal of said signal comparator (2) output is carried out denoising.
9. keypad; This keypad comprises button (5), push button signalling input unit (6) and button circuit board (7); Wherein, Said push button signalling input unit (6) is the described push button signalling input unit of each claim among the claim 1-4; Said button (5) is the conduction button, and said push button signalling input unit (6) is welded on that said button circuit board (7) is gone up and electrically contacts with button input contact on the said button circuit board (7), and the first input end (21) of the signal comparator (2) in said button (5) and the said push button signalling input unit (6) is electrically connected.
10. keypad according to claim 9; Wherein, This keypad also comprises installation panel, the last installation panel with opening (4) and installation guide pillar (10) down; Said button circuit board (7) through install guide pillar (10) be fixedly mounted on said go up installation panel with said down between the installation panel forming layer structure, and make said button (5) be embedded in the said opening (4) of said upward installation panel.
11. keypad according to claim 10, wherein, said installation guide pillar (10) has multirow, and the setting of staggering between row and the row, and said installation guide pillar (10) is provided with elastic washer with the junction of said button circuit board (7).
12. keypad according to claim 10; Wherein, Said upward installation panel and said installation panel down are the layer structure that comprises hard laminate (8) and insulation board (9), and said insulation board (9) is positioned between said button circuit board (7) and the said hard laminate (8).
13. keypad according to claim 9, wherein, this keypad also comprises the LED-backlit lamp, and said LED-backlit lamp is arranged on said the above opening of installation panel (4) side of going up.
14. keypad according to claim 13, wherein, the opening and closing of said LED-backlit lamp are controlled through pulse width modulating signal.
15. keypad according to claim 13, wherein, said keypad also comprises light control sensor, and this light control sensor is electrically connected with said LED-backlit lamp, and this light control sensor is used for regulating according to the illuminance of external environment the brightness of said LED-backlit lamp.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110302339A CN102332905A (en) | 2011-09-28 | 2011-09-28 | Key signal input device, key signal input method and key board |
| CN2012101664424A CN102684667A (en) | 2011-09-28 | 2012-05-25 | Key signal input device, key signal input method and key board |
| CN 201220241112 CN202585199U (en) | 2011-09-28 | 2012-05-25 | Keypad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110302339A CN102332905A (en) | 2011-09-28 | 2011-09-28 | Key signal input device, key signal input method and key board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102332905A true CN102332905A (en) | 2012-01-25 |
Family
ID=45484536
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110302339A Pending CN102332905A (en) | 2011-09-28 | 2011-09-28 | Key signal input device, key signal input method and key board |
| CN2012101664424A Pending CN102684667A (en) | 2011-09-28 | 2012-05-25 | Key signal input device, key signal input method and key board |
| CN 201220241112 Expired - Fee Related CN202585199U (en) | 2011-09-28 | 2012-05-25 | Keypad |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101664424A Pending CN102684667A (en) | 2011-09-28 | 2012-05-25 | Key signal input device, key signal input method and key board |
| CN 201220241112 Expired - Fee Related CN202585199U (en) | 2011-09-28 | 2012-05-25 | Keypad |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN102332905A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013053106A1 (en) * | 2011-10-11 | 2013-04-18 | 中联重科股份有限公司 | Method and system for outputting key pressing signal |
| CN108134617A (en) * | 2016-12-06 | 2018-06-08 | 北京希格玛和芯微电子技术有限公司 | Control processing method, system and the device of signal |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103066969B (en) * | 2012-12-24 | 2015-09-09 | 无锡中星微电子有限公司 | A kind of electronic equipment with crash reset function |
| CN104124953A (en) * | 2013-04-25 | 2014-10-29 | 原相科技股份有限公司 | High-precision capacitive switch |
| CN110311688B (en) * | 2019-06-13 | 2023-05-02 | 广汽零部件有限公司 | Two-way acquisition and verification physical key |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100642497B1 (en) * | 2004-06-03 | 2006-11-02 | 주식회사 애트랩 | electrical touch sensor |
| EP1777821B1 (en) * | 2005-08-31 | 2008-07-09 | Electrolux Home Products Corporation N.V. | Electronic circuit with capacitative switching ability |
| JP2007119250A (en) * | 2005-10-26 | 2007-05-17 | Inventio Ag | Control panel for elevator, and elevator having the control panel |
| CN100517201C (en) * | 2005-11-10 | 2009-07-22 | 鸿富锦精密工业（深圳）有限公司 | Touch induction system |
| CN1968558A (en) * | 2005-11-17 | 2007-05-23 | 建美电子股份有限公司 | Method for updating light brightness of luminous component of portable electronic device |
| JP4264558B2 (en) * | 2006-11-10 | 2009-05-20 | ソニー株式会社 | Backlight device, backlight driving method, and color image display device |
| CN102054607B (en) * | 2009-10-28 | 2013-08-21 | 群康科技(深圳)有限公司 | Backlight key |
| CN201577081U (en) * | 2009-12-18 | 2010-09-08 | 宁波舜韵电子有限公司 | Capacitive touch induction key circuit |
-
2011
- 2011-09-28 CN CN201110302339A patent/CN102332905A/en active Pending
-
2012
- 2012-05-25 CN CN2012101664424A patent/CN102684667A/en active Pending
- 2012-05-25 CN CN 201220241112 patent/CN202585199U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013053106A1 (en) * | 2011-10-11 | 2013-04-18 | 中联重科股份有限公司 | Method and system for outputting key pressing signal |
| CN108134617A (en) * | 2016-12-06 | 2018-06-08 | 北京希格玛和芯微电子技术有限公司 | Control processing method, system and the device of signal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN202585199U (en) | 2012-12-05 |
| CN102684667A (en) | 2012-09-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102684667A (en) | Key signal input device, key signal input method and key board | |
| EP2495766A1 (en) | Safety system to reduce risk of electrocution at photovoltaic panels level | |
| JP2008079475A5 (en) | ||
| ATE500715T1 (en) | CIRCUIT ARRANGEMENT AND METHOD FOR OPERATING AT LEAST ONE LED AND AT LEAST ONE FLUORESCENT LAMP | |
| CN103828163A (en) | Improved reliability in semiconductor device control | |
| EP2222135A2 (en) | Switch for controlling an operating device for a light assembly, operating device and method for operating the switch | |
| CN102801144A (en) | Surge suppressors of switch for power supply and distribution | |
| RU2017134150A (en) | ISOLATED DRIVER | |
| WO2021147031A1 (en) | Safe torque off (sto) circuit and method for sto circuit | |
| CN207689630U (en) | A kind of TE plates function detection device | |
| CN101730337A (en) | Frequency jitter technique for effectively reducing electromagnetic interference in LED drive circuit | |
| US20090267806A1 (en) | Electrical Circuit | |
| US10778224B2 (en) | Method for lighting backlight of capacitive touch switch module | |
| US9692407B2 (en) | Circuit and method for detection of failure of the driver signal for parallel electronic switches | |
| CN102968957A (en) | A light-emitting diode (led) device, and an led driving circuit and method | |
| CN207339810U (en) | A kind of power supply delay control circuit | |
| US20040136131A1 (en) | Electrical inertial load controlling apparatus having gate drive for proctecting igbt | |
| CN215734218U (en) | Touch button of time-of-flight mass spectrometer | |
| KR20090098451A (en) | Apparatus for breaking leakage current of led lighting fixture | |
| CN1835166A (en) | Multifunction tripping device | |
| RU161998U1 (en) | PROTECTION SCHEME OF MODULATOR OUTPUT KEY CASCADE | |
| CN201477400U (en) | Control circuit and electrical apparatus adopting same | |
| CN104035366A (en) | Electric energy control device and method thereof | |
| CN204259198U (en) | Electromagnetic resonant circuit | |
| CN100342649C (en) | Capacitance induction system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 410013 Yuelu District, Hunan, silver basin Road, No. 361, No. Applicant after: ZOOMLION HEAVY INDUSTRY SCIENCE&TECHNOLOGY Co.,Ltd. Address before: 410013 Yuelu District, Hunan, silver basin Road, No. 361, No. Applicant before: CHANGSHA ZOOMLION HEAVY INDUSTRY SCIENCE AND TECHNOLOGY DEVELOPMENT Co.,Ltd. |
|
| CB03 | Change of inventor or designer information |
Inventor after: Chen Qinghuai Inventor after: Yuan Hai Inventor after: Wu Ke Inventor after: Wang Desheng Inventor after: Wang Qi Inventor before: Chen Qinghuai Inventor before: Yuan Hai Inventor before: Wu Ke Inventor before: Wang Desheng |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: CHEN QINGHUAI YUAN HAI WU KE WANG DESHENG TO: CHEN QINGHUAI YUAN HAI WU KEWANG DESHENG WANG QI |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20120125 |