CN202261221U - General key board - Google Patents
General key board Download PDFInfo
- Publication number
- CN202261221U CN202261221U CN2011203747136U CN201120374713U CN202261221U CN 202261221 U CN202261221 U CN 202261221U CN 2011203747136 U CN2011203747136 U CN 2011203747136U CN 201120374713 U CN201120374713 U CN 201120374713U CN 202261221 U CN202261221 U CN 202261221U
- Authority
- CN
- China
- Prior art keywords
- resistance
- digital regulation
- regulation resistance
- button
- transmission ends
- 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 - Lifetime
Links
Images
Landscapes
- Input From Keyboards Or The Like (AREA)
Abstract
The utility model relates to the key technology. The utility model provides a general key board, which solves the problems of the existing electronic products that: a soft touch key board and / or a touch key board must be matched with a main board of the electronic products. The general keyboard comprises key device, a power supply input terminal, a first detection signal transmission terminal, a second detection signal transmission terminal, a ground line transmission terminal, a ground line, a control module, a resistor 3, a resistor 4, an independent adjustable digital potentiometer 1 with a switch and an independent adjustable digital potentiometer 2 with a switch. The general key board has the following beneficial effects: the user is facilitated and the general key board is applied to the soft touch key board and/or the touch key board.
Description
Technical field
The utility model relates to by key technology, particularly the technology of touch key-press plate.
Background technology
Operation voltage value mainly due to each button is different; Cause present electronic product touch keypad and/or touch key-press plate must with the supporting use of the mainboard of electronic product; Brought trouble so just for user and electronic product developer, the circuit theory diagrams that present keypad is connected with mainboard such as Fig. 1, one comprises two-way button, the first detection signal transmission ends KEY0 ', the second detection signal transmission ends KEY1 ', ground wire transmission ends GND ' and ground wire keypad; Wherein one road button is made up of M button and M resistance; M and N are the integer more than or equal to 1, and M button is respectively one tunnel first button K11, one tunnel second button K12 ..., M resistance is respectively one tunnel first resistance R 11, one tunnel second resistance R 12 ... Another road button is made up of N button and N resistance; N button is respectively two tunnel first button K21, two tunnel second button K22 ..., N resistance is respectively two tunnel first resistance R 21, two tunnel second resistance R 22 ..., wherein; One end of all buttons all is connected with the ground wire transmission ends; The ground wire transmission ends is connected with ground wire, and an end of one tunnel first resistance R 11 is connected with the first detection signal transmission ends, and the other end is connected with an end of one tunnel second resistance R 12; And be connected with the other end of one tunnel first button K11; The other end of one tunnel second resistance R 12 is connected with an end of one tunnel the 3rd resistance R 13, and is connected with the other end of one tunnel second button K12 ... The other end of one road M resistance R 1M is connected with the other end of one road M button K1M, and an end of two tunnel first resistance R 21 is connected with the second detection signal transmission ends; The other end is connected with an end of two tunnel second resistance R 22; And be connected with the other end of two tunnel first button K21, the other end of two tunnel second resistance R 22 is connected with an end of two tunnel the 3rd resistance R 23, and is connected with the other end of two tunnel second button K22 ... The other end of two road N resistance R 2N is connected with the other end of one road N button K2N; Link to each other with the mainboard ground wire with pull-up resistor one R1, pull-up resistor two R2, the mainboard processor MCU of mainboard respectively through socket XS1.The mainboard processor MCU comprises the first via button detection port KEY0 and the second road button detection port KEY1, and the operation voltage value of said one tunnel first button K11 is: U1=E*R11/ (R1+R11), when the detection voltage of first via button detection port KEY0 drops to the operation voltage value of one tunnel first button K11 by supply voltage E; One tunnel first button K11 action; Its operation voltage is worth error range to depend on the precision of the divider resistance of getting, and leaves certain surplus, in like manner; The operation voltage value of one tunnel second button K12 is: U2=E* (R11+R12)/(R1+R11+R12); The operation voltage value of one road M button K1M is: UM=E* (R1+R12+---R1M)/(R1+R11+R12+---R1M), two tunnel first button K21, two tunnel second button K22 by that analogy ... The operation voltage value of two road N button K2N, one; Also has power input in the touch key-press plate; On the corresponding with it mainboard power output end is arranged also, promptly have corresponding power delivery interface on its socket XS1 yet, touching does not then have power input in the keypad; Do not have power output end on the then corresponding with it mainboard yet, promptly do not have corresponding power delivery interface on its socket XS1 yet.
The utility model content
The purpose of the utility model be overcome present electronic product touch keypad and/or touch key-press plate must with the matching used shortcoming of the mainboard of electronic product, a kind of general keypad is provided.
The utility model solves its technical problem, and the technical scheme of employing is general keypad; Comprise key device, power input, the first detection signal transmission ends, the second detection signal transmission ends, ground wire transmission ends and ground wire, it is characterized in that, also comprise control module, resistance three, resistance four, independent adjustable and the digital regulation resistance one of belt switch and the digital regulation resistance two of independently adjustable and belt switch; One end of said resistance three is connected with an end of resistance four, and is connected with power input, and the other end of resistance three is connected with the first detection signal transmission ends; And be connected with an end of digital regulation resistance one; The other end of resistance four is connected with the second detection signal transmission ends, and is connected with an end of digital regulation resistance two, and the other end of digital regulation resistance one is connected with the other end of digital regulation resistance two; And be connected with ground wire; And be connected with the ground wire transmission ends, control module is connected with the control port of digital regulation resistance one and digital regulation resistance two respectively, and said key device is connected with control module.
Concrete, said control module comprises processor and memory, and said memory is connected with processor, and processor is connected with the control port of digital regulation resistance one and digital regulation resistance two respectively, and said key device is connected with processor.
Further, said memory is RAM (Random Access Memory, a random asccess memory) memory.
Concrete, said control module is a single-chip microcomputer.
Further again, said digital regulation resistance one and digital regulation resistance two are the two-channel digital potentiometer.
Concrete, said key device comprises that at least the digital regulation resistance resistance increases that button, digital regulation resistance resistance reduce button, numerical key, storage key and at least one waits to define the operating function button.
Further again, said key device also comprises decimal key.
Concrete, said to wait to define the operating function button be 64.
The beneficial effect of the utility model is; Through above-mentioned general keypad, utilize control module to regulate the resistance of digital regulation resistance one and/or digital regulation resistance two, can be connected with the mainboard of other electronic products; Electronic product is controlled; Make touch keypad and/or touch key-press plate no longer need with the supporting use of the mainboard of this electronic product, make things convenient for the user, also make things convenient for the electronic product developer simultaneously.
Description of drawings
Fig. 1 is the circuit theory diagrams that the keypad of prior art is connected with mainboard;
Fig. 2 is the circuit theory diagrams that the general keypad of the utility model is connected with mainboard.
Wherein, KEY0 ' is that the first detection signal transmission ends, KEY1 ' are that the second detection signal transmission ends, GND ' are the ground wire transmission ends, and E ' is a power input, and K11 is one tunnel first button; K12 is one tunnel second button, and K1M is one road M button, and R11 is one tunnel first resistance, and R12 is one tunnel second resistance; R1M is one road M resistance, and K21 is two tunnel first buttons, and K22 is two tunnel second buttons, and K2N is two road N buttons; R21 is two tunnel first resistance, and R22 is two tunnel second resistance, and R2N is two road N resistance, and R1 is a pull-up resistor one; R2 is a pull-up resistor two, and KEY0 is a first via button detection port, and KEY1 is the second road button detection port, and GND is a mainboard ground wire transmission ends; E is a motherboard power supply, and RT1 is a digital regulation resistance one, and RT2 is a digital regulation resistance two, and R3 is a resistance three; R4 is a resistance four, and MCU is the mainboard processor, and XS1 is a socket.
Embodiment
Below in conjunction with accompanying drawing and embodiment, describe the technical scheme of the utility model in detail.
The said general keypad of the utility model is made up of digital regulation resistance one RT1 of key device, power input E ', the first detection signal transmission ends KEY0 ', the second detection signal transmission ends KEY1 ', ground wire transmission ends GND ', ground wire, control module, resistance three R3, resistance four R4, independent adjustable and belt switch and independent adjustable and digital regulation resistance two RT2 belt switch; Wherein, The end of resistance three R3 is connected with the end of resistance four R4; And be connected with power input E '; The other end of resistance three R3 is connected with the first detection signal transmission ends KEY0 '; And be connected with the end of digital regulation resistance one RT1; The other end of resistance four R4 is connected with the second detection signal transmission ends KEY1 '; And be connected with the end of digital regulation resistance two RT2; The other end of digital regulation resistance one RT1 is connected with the other end of digital regulation resistance two RT2, and is connected with ground wire, and is connected with ground wire transmission ends GND '; Control module is connected with the control port of digital regulation resistance one RT1 and digital regulation resistance two RT2 respectively; Key device is connected with control module, and power input E ', the first detection signal transmission ends KEY0 ', the second detection signal transmission ends KEY1 ' and ground wire transmission ends GND ' that then will this general keypad is connected with power output end, first via button detection port KEY0, the second road button detection port KEY1 and the mainboard ground wire transmission ends GND of mainboard respectively through socket XS1 and gets final product, and the resistance value through control module control figure potentiometer one RT1 and/or digital regulation resistance two RT2 can be connected with the mainboard of other electronic products; Electronic product is controlled, make touch keypad and/or touch key-press plate no longer need with the supporting use of the mainboard of this electronic product.
Embodiment
This routine control module comprises processor and memory, its circuit theory diagrams such as Fig. 2.
This general keypad is made up of digital regulation resistance one RT1 of key device, power input E ', the first detection signal transmission ends KEY0 ', the second detection signal transmission ends KEY1 ', ground wire transmission ends GND ', ground wire, control module, resistance three R3, resistance four R4, independent adjustable and belt switch and independent adjustable and digital regulation resistance two RT2 belt switch; Wherein, The end of resistance three R3 is connected with the end of resistance four R4; And be connected with power input E '; The other end of resistance three R3 is connected with the first detection signal transmission ends KEY0 '; And be connected with the end of digital regulation resistance one RT1, the other end of resistance four R4 is connected with the second detection signal transmission ends KEY1 ', and is connected with the end of digital regulation resistance two RT2; The other end of digital regulation resistance one RT1 is connected with the other end of digital regulation resistance two RT2; And be connected with ground wire, and be connected with ground wire transmission ends GND ', control module is connected with the control port of digital regulation resistance one RT1 and digital regulation resistance two RT2 respectively; Here digital regulation resistance one RT1 and digital regulation resistance two RT2 can be the two-channel digital potentiometer; Key device is connected with control module, and control module comprises processor and memory, and memory is connected with processor; Memory can be the RAM memory; Processor is connected with the control port of digital regulation resistance one RT1 and digital regulation resistance two RT2 respectively, and key device is connected with processor, and this control module can be single-chip microcomputer; This key device comprises that at least the digital regulation resistance resistance increases that button, digital regulation resistance resistance reduce button, numerical key, storage key and at least one waits to define operating function button etc.; Can also comprise decimal key, wait to define the operating function button and can be provided with 64 that power input E ', the first detection signal transmission ends KEY0 ', the second detection signal transmission ends KEY1 ' and ground wire transmission ends GND ' that then will this general keypad is connected with power output end, first via button detection port KEY0, the second road button detection port KEY1 and the mainboard ground wire transmission ends GND of mainboard respectively through socket XS1 and gets final product.
During use, as if the mainboard supporting, then because it does not have power output end with touching keypad; At this moment; Power input E does not have input, and then resistance three R3 and resistance four R4 are in open-circuit condition, and are inoperative; And the mainboard supporting with respect to the touch key-press plate; Because one all arrives the resistance of its pull-up resistor one R1 and pull-up resistor two R2 between a few M Ω at hundreds of K Ω, and the maximum value of digital regulation resistance (comprising digital regulation resistance one RT1 and digital regulation resistance two RT2) is merely 50K Ω, for obtaining required branch pressure voltage; Need therefore need resistance three R3 and resistance four R4 to be its dividing potential drop in pull-up resistor one R1 and pull-up resistor two R2 two ends parallel resistances to reduce the pull-up resistor resistance.When the user knows needed each the button magnitude of voltage of the mainboard that is connected with this general keypad; Can select one to wait to define the operating function button and directly increase button or digital regulation resistance resistance and reduce button or numerical key and regulate the keypress function that the resistance value of digital regulation resistance one RT1 or digital regulation resistance two RT2 reaches selection through the digital regulation resistance resistance; And the resistance value of storing needed digital regulation resistance one RT1 of corresponding button or digital regulation resistance two RT2 through storage key, choose the resistance value of needed digital regulation resistance one RT1 of corresponding keypress function or digital regulation resistance two RT2 when when connecting, using each button after reaching automatically with this mainboard.
Because each the module physical circuit in the utility model technical scheme belongs to prior art, no longer detail here.Those of ordinary skill in the art according to foregoing description, can adopt various physical circuits to realize the technical scheme of the utility model, and it all belongs to the protection range of the utility model.
Claims (8)
1. general keypad comprises key device, power input, the first detection signal transmission ends, the second detection signal transmission ends, ground wire transmission ends and ground wire, it is characterized in that; Also comprise control module, resistance three, resistance four, independent adjustable and the digital regulation resistance one of belt switch and the digital regulation resistance two of independently adjustable and belt switch; One end of said resistance three is connected with an end of resistance four, and is connected with power input, and the other end of resistance three is connected with the first detection signal transmission ends; And be connected with an end of digital regulation resistance one; The other end of resistance four is connected with the second detection signal transmission ends, and is connected with an end of digital regulation resistance two, and the other end of digital regulation resistance one is connected with the other end of digital regulation resistance two; And be connected with ground wire; And be connected with the ground wire transmission ends, control module is connected with the control port of digital regulation resistance one and digital regulation resistance two respectively, and said key device is connected with control module.
2. according to the said general keypad of claim 1; It is characterized in that said control module comprises processor and memory, said memory is connected with processor; Processor is connected with the control port of digital regulation resistance one and digital regulation resistance two respectively, and said key device is connected with processor.
3. according to the said general keypad of claim 2, it is characterized in that said memory is the RAM memory.
4. according to claim 1 or 2 or 3 said general keypads, it is characterized in that said control module is a single-chip microcomputer.
5. according to the said general keypad of claim 1, it is characterized in that said digital regulation resistance one and digital regulation resistance two are the two-channel digital potentiometer.
6. according to the said general keypad of claim 1, it is characterized in that said key device comprises that at least the digital regulation resistance resistance increases that button, digital regulation resistance resistance reduce button, numerical key, storage key and at least one waits to define the operating function button.
7. according to the said general keypad of claim 6, it is characterized in that said key device also comprises decimal key.
8. according to claim 6 or 7 said general keypads, it is characterized in that said to wait to define the operating function button be 64.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203747136U CN202261221U (en) | 2011-09-29 | 2011-09-29 | General key board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203747136U CN202261221U (en) | 2011-09-29 | 2011-09-29 | General key board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202261221U true CN202261221U (en) | 2012-05-30 |
Family
ID=46122400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203747136U Expired - Lifetime CN202261221U (en) | 2011-09-29 | 2011-09-29 | General key board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202261221U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105978576A (en) * | 2016-05-06 | 2016-09-28 | 京东方科技集团股份有限公司 | Key circuit and using method thereof, TV key panel, display device |
| CN112172525A (en) * | 2020-10-14 | 2021-01-05 | 上海博泰悦臻电子设备制造有限公司 | Steering wheel key board and method for realizing steering wheel function |
-
2011
- 2011-09-29 CN CN2011203747136U patent/CN202261221U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105978576A (en) * | 2016-05-06 | 2016-09-28 | 京东方科技集团股份有限公司 | Key circuit and using method thereof, TV key panel, display device |
| CN105978576B (en) * | 2016-05-06 | 2019-04-12 | 京东方科技集团股份有限公司 | Key circuit and its application method, television key plate, display device |
| US10447299B2 (en) | 2016-05-06 | 2019-10-15 | Boe Technology Group Co., Ltd. | Press-button circuit and driving method thereof, keypad, and display device |
| CN112172525A (en) * | 2020-10-14 | 2021-01-05 | 上海博泰悦臻电子设备制造有限公司 | Steering wheel key board and method for realizing steering wheel function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202455337U (en) | Key circuit based on analog-to-digital conversion | |
| CN110166868A (en) | A kind of charging box and charging system communicated with wireless headset | |
| CN201039440Y (en) | A cable control earphone for multi-key and single detection end | |
| CN107168452B (en) | A kind of key-press input processing circuit | |
| CN202261221U (en) | General key board | |
| CN204116988U (en) | Temperature controller | |
| CN105530339B (en) | A kind of mobile terminal and its circuit for forced shutdown | |
| CN102789319A (en) | Keyboard, key detection device and electronic equipment | |
| US20130275632A1 (en) | Key detection circuit | |
| CN102857231B (en) | A kind of key press detecting circuit | |
| CN105403838A (en) | Voltages measurement device of multiple portable cell monomers | |
| CN202634405U (en) | Multi-button acquisition circuit used for single input port | |
| CN204926765U (en) | Automatic regulating electrical resistance's digital regulation resistance | |
| CN206671419U (en) | A kind of current measurement system | |
| CN207636643U (en) | Portable calibration grade resistance source | |
| CN203537553U (en) | An Interface circuit realizing serial port and infrared multiplex functions | |
| CN201217193Y (en) | Numerical display type power supply for electric screwdriver | |
| CN202931275U (en) | Button circuit and electronic apparatus | |
| CN206611400U (en) | Multiple point touching circuit based on ADC voltage detectings | |
| CN205827188U (en) | Interactive communication system based on auspicious sa MCU | |
| CN204314351U (en) | A kind of test source device | |
| CN202230403U (en) | Temperature and humidity monitoring terminal with adjustable communication port address | |
| CN203217297U (en) | Full electronic type program controlled resistor | |
| CN202548595U (en) | Variable selection device of tandem type two-terminal elements | |
| CN203490663U (en) | Mouse with multiple control units |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |
|
| CX01 | Expiry of patent term |