CN201639564U - Capacitance induction type key - Google Patents
Capacitance induction type key Download PDFInfo
- Publication number
- CN201639564U CN201639564U CN2010201299179U CN201020129917U CN201639564U CN 201639564 U CN201639564 U CN 201639564U CN 2010201299179 U CN2010201299179 U CN 2010201299179U CN 201020129917 U CN201020129917 U CN 201020129917U CN 201639564 U CN201639564 U CN 201639564U
- Authority
- CN
- China
- Prior art keywords
- resistance
- processor
- induction type
- resistor
- comparator circuit
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Electronic Switches (AREA)
Abstract
The utility model relates to the key technology and provides a capacitance induction type key, which resolves problems that the existing capacitance induction type key is easy to cause faulty action of triggers. The technical scheme includes that the capacitance induction type key comprises an induction capacitor and a power input end, and is characterized by further comprising a resistor I, a resistor II, a resistor III, a resistor IV and a processor, the processor comprises a comparator circuit inside the processor, and the resistor I, together with the induction capacitor, the resistor II, the resistor III, the resistor IV and the comparator circuit inside the processor, forms an RC oscillating circuit. The capacitance induction type key has the advantages of reducing misjudgment and fault action. The utility model is applicable to capacitance induction type keys.
Description
Technical field
The utility model relates to by key technology, particularly the button control technology.
Background technology
Panel TV market mainly contains photoinduction key mode, touch key-press mode and three kinds of novel key modes of capacitor induction type key mode at present, but in the application process of reality, all there are certain technical problem and deficiency, thereby traditional capacitor induction type key mode is the inductance capacitance of human finger and reference capacitance to be compared the trigger level is overturn judge the operation of keypress function, because the value of reference capacitance is the pF level electric capacity below 10, and inductance capacitance also often changes with environmental impact, thereby is easy to cause the misoperation of trigger.
The utility model content
The purpose of this utility model is to overcome the shortcoming that above-mentioned existing capacitor induction type button causes the trigger misoperation easily, and a kind of capacitor induction type button is provided.
The utility model solves its technical problem, the technical scheme that adopts is, the capacitor induction type button, comprise inductance capacitance and power input, it is characterized in that, also comprise resistance one, resistance two, resistance three, resistance four and processor, processor comprises processor internal comparator circuit, and described resistance one is formed the RC oscillating circuit with inductance capacitance, resistance two, resistance three, resistance four and processor internal comparator circuit.
Concrete, described processor is that model is the single-chip microcomputer of MSP430.
Further, described RC oscillating circuit is that processor internal comparator circuit output end is connected with an end of resistance one, the other end of resistance one is connected with inductance capacitance one end and is connected with processor internal comparator circuit negative pole, inductance capacitance other end ground connection, power input is formed bleeder circuit with resistance two, resistance three and is connected with processor internal comparator circuit anode and resistance 41 ends, and processor internal comparator circuit output end is connected with resistance four other ends with resistance one.
Concrete, the value of described inductance capacitance is 10pF; The value of described resistance one, resistance two, resistance three, resistance four is about 100K Ω.
The beneficial effects of the utility model are, processor is by detecting the frequency of RC oscillating circuit in real time, the threshold value up and down that associative processor is set judges whether to be effective button operation, can judge by accident and misoperation thereby reduce by processor according to threshold value about the adjustment of environmental change self adaptation.
Description of drawings
Fig. 1 is the system block diagram of embodiment.
Embodiment
Below in conjunction with drawings and Examples, describe the technical solution of the utility model in detail.
Capacitor induction type button of the present utility model is made up of inductance capacitance C, processor, resistance one R1, resistance two R2, resistance three R3, resistance four R4 and power input VCC, and wherein resistance one R1, resistance two R2, resistance three R3, resistance four R4 and inductance capacitance C and processor internal comparator circuit are formed the RC oscillating circuit.
Embodiment
This routine processor model is that the single-chip microcomputer of MSP430 is an example with the model, its system block diagram such as Fig. 1.
At first be that processor internal comparator circuit output end is connected with the end of resistance one R1 with the RC oscillating circuit, the other end of resistance one R1 is connected with inductance capacitance C one end and is connected with processor internal comparator circuit negative pole, inductance capacitance C other end ground connection, power input VCC and resistance two R2, resistance three R3 form bleeder circuit and are connected with processor internal comparator circuit anode and resistance four R4 one end, processor internal comparator circuit output end is connected with the resistance four R4 other ends with resistance one R1, wherein the quiescent value of inductance capacitance C is about 10pF, resistance one R1, resistance two R2, resistance three R3, the value of resistance four R4 is about 100K Ω, like this, external resistance one R1, resistance two R, resistance three R, resistance four R have just formed a RC oscillating circuit with inductance capacitance C and processor internal comparator circuit.
Its judgment mode can for: inductance capacitance C is as the part of RC oscillating circuit, when human finger touch sensible capacitor C, inductance capacitance C changes, the frequency of oscillation of RC oscillating circuit is changed, by the internal timing or the counter of processor this frequency is accurately measured again, processor is according to the frequency change that successively detects, and with set after threshold value compares up and down, judge whether to be effective button operation, if then respond this operation and send it to the television set body, make television set finish the corresponding function operation, because button adopts processor (model is the single-chip microcomputer of MSP430) control, can detect RC oscillating circuit original frequency in real time, and can judge by accident and misoperation thereby reduce according to threshold value about the adjustment of environmental change self adaptation.
Because each several part circuit and software in the technical solutions of the utility model all belong to prior art, no longer describe in detail herein.Those of ordinary skill in the art according to foregoing description, can adopt various circuit to realize the technical solution of the utility model, and it all belongs to protection range of the present utility model.
Claims (5)
1. capacitor induction type button, comprise inductance capacitance and power input, it is characterized in that, also comprise resistance one, resistance two, resistance three, resistance four and processor, processor comprises processor internal comparator circuit, and described resistance one is formed the RC oscillating circuit with inductance capacitance, resistance two, resistance three, resistance four and processor internal comparator circuit.
2. according to the described capacitor induction type button of claim 1, it is characterized in that described processor is that model is the single-chip microcomputer of MSP430.
3. according to the described capacitor induction type button of claim 2, it is characterized in that, described RC oscillating circuit is that processor internal comparator circuit output end is connected with an end of resistance one, the other end of resistance one is connected with inductance capacitance one end and is connected with processor internal comparator circuit negative pole, inductance capacitance other end ground connection, power input is formed bleeder circuit with resistance two, resistance three and is connected with processor internal comparator circuit anode and resistance 41 ends, and processor internal comparator circuit output end is connected with resistance four other ends with resistance one.
4. according to the described capacitor induction type button of claim 3, it is characterized in that the quiescent value of described inductance capacitance is about 10pF.
5. according to claim 3 or 4 described capacitor induction type buttons, it is characterized in that the value of described resistance one, resistance two, resistance three, resistance four is about 100K Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201299179U CN201639564U (en) | 2010-03-12 | 2010-03-12 | Capacitance induction type key |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201299179U CN201639564U (en) | 2010-03-12 | 2010-03-12 | Capacitance induction type key |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201639564U true CN201639564U (en) | 2010-11-17 |
Family
ID=43084070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201299179U Expired - Fee Related CN201639564U (en) | 2010-03-12 | 2010-03-12 | Capacitance induction type key |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201639564U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102332906A (en) * | 2011-10-11 | 2012-01-25 | 中联重科股份有限公司 | Method and system for outputting key signal |
| CN104184448A (en) * | 2014-07-31 | 2014-12-03 | 松下家电研究开发（杭州）有限公司 | Control method for preventing false detection of capacitive touch button, and electric appliance |
| CN105208423A (en) * | 2015-07-07 | 2015-12-30 | 深圳Tcl数字技术有限公司 | Method and system for remote control based on electromagnetic induction |
| CN107295333A (en) * | 2016-03-31 | 2017-10-24 | 青岛海信电器股份有限公司 | A kind of display device and its control method |
| CN110322667A (en) * | 2019-06-04 | 2019-10-11 | 广州杰赛科技股份有限公司 | A kind of Anti-dismantling wearable device and its monitoring method |
-
2010
- 2010-03-12 CN CN2010201299179U patent/CN201639564U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102332906A (en) * | 2011-10-11 | 2012-01-25 | 中联重科股份有限公司 | Method and system for outputting key signal |
| CN104184448A (en) * | 2014-07-31 | 2014-12-03 | 松下家电研究开发（杭州）有限公司 | Control method for preventing false detection of capacitive touch button, and electric appliance |
| CN104184448B (en) * | 2014-07-31 | 2017-07-21 | 松下家电研究开发（杭州）有限公司 | Prevent control method and electrical appliance that capacitance type touch key flase drop is known |
| CN105208423A (en) * | 2015-07-07 | 2015-12-30 | 深圳Tcl数字技术有限公司 | Method and system for remote control based on electromagnetic induction |
| CN107295333A (en) * | 2016-03-31 | 2017-10-24 | 青岛海信电器股份有限公司 | A kind of display device and its control method |
| CN107295333B (en) * | 2016-03-31 | 2019-08-02 | 青岛海信电器股份有限公司 | A kind of display equipment and its control method |
| CN110322667A (en) * | 2019-06-04 | 2019-10-11 | 广州杰赛科技股份有限公司 | A kind of Anti-dismantling wearable device and its monitoring method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201639564U (en) | Capacitance induction type key | |
| CN104104375B (en) | Strengthen the method and circuit of the anti-mobile phone interference of capacitance type touch key | |
| CN103543344B (en) | A kind of method solving capacitance plate inefficacy and capacitance plate abnormity detecting circuit | |
| CN100550634C (en) | A kind of control board transducer and display device | |
| CN209070501U (en) | A kind of active auto sleep capacitance pen | |
| CN203504522U (en) | Touch key control circuit and air conditioner | |
| CN200956611Y (en) | Keyboard detecting circuit and television receiver with same | |
| CN102394622B (en) | Capacitive touch key and key judging method thereof | |
| CN209462355U (en) | Time-delay reset circuit and electronic equipment | |
| CN208588984U (en) | On/off circuit and unmanned plane for unmanned plane monitoring equipment | |
| CN202889317U (en) | Capacitance type touch key circuit | |
| CN109581227A (en) | A kind of intelligent door lock energy-saving voltage detection circuit | |
| CN102411837A (en) | Double sided remote control | |
| CN202798060U (en) | Cell energy saving device and electronic equipment | |
| CN201315630Y (en) | DVB-S set top box with standby touch key | |
| CN201369096Y (en) | Touch remote controller based on capacitance change | |
| CN207304514U (en) | Low-power consumption touch sensible wakes up system | |
| CN204652345U (en) | A kind of novel switched amount input circuit | |
| CN103838346B (en) | The method and its control circuit of automatic unlocking after intelligent control system of domestic electric appliances wake-up | |
| CN202713263U (en) | Self-learning correction touch button circuit | |
| CN111106820B (en) | Touch key control system and control method thereof | |
| CN209471217U (en) | A kind of intelligent door lock energy-saving voltage detection circuit | |
| CN201397345Y (en) | Electric energy meter | |
| CN205883191U (en) | A touch recognition system for solving unable discernment touch action of touch button | |
| CN102640250A (en) | Human body electromagnetic induction switchgear and method for starting electrical equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101117 Termination date: 20160312 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |