CN201656945U - Capacitance type touch control device - Google Patents
Capacitance type touch control device Download PDFInfo
- Publication number
- CN201656945U CN201656945U CN2010201323394U CN201020132339U CN201656945U CN 201656945 U CN201656945 U CN 201656945U CN 2010201323394 U CN2010201323394 U CN 2010201323394U CN 201020132339 U CN201020132339 U CN 201020132339U CN 201656945 U CN201656945 U CN 201656945U
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- voltage
- capacitance touching
- touching control
- modulation device
- capacitive touch
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Abstract
A capacitance type touch control device comprises a miniature control device, a capacitance type touch control device connected with the miniature control device and a plurality of capacitance type touch control switches connected with the capacitance type touch control device. The capacitance type touch control device further comprises a pulse-width modulation device, a plurality of metal sheets and a voltage modulation device. The plurality of capacitance type touch control switches are connected with the pulse-width modulation device; and each metal sheet is correspondingly arranged under each capacitance type touch control switch. Both the pulse-width modulation device and the voltage modulation device are connected with the miniature control device.
Description
Technical field
The utility model relates to a kind of touch control device, particularly relevant for a kind of capacitive touch control device.
Background technology
Capacitance touching control equipment is the new application on touch controlled key at present, and the general button of the cost of capacitance touching control equipment is cheap.But in known technology, the many modes that discharge and recharge with RC of capacitance touching control equipment are calculated the equivalent capacity that user's human body produces, yet different human bodies is because of its physique difference, the equivalent capacity that it produced is also inequality, can cause same capacitance touching control equipment for different users, sometimes too sensitive but respond to bad situation sometimes, cause the puzzlement of user on operating capacitance touch equipment.Moreover, general capacitive touch device is when operation, be subjected to the interference of power supply noise and surrounding enviroment influence easily, when for example being placed on the capacitive touch control products on the metallic desk, because the metal desktop is a conductor, be subjected to the influence of metal desktop, the rate of change of capacitance touching control induction is descended, cause the capacitance touching control sensing apparatus problem that malfunction maybe can't be operated to occur.How to reduce the difficulty of user's operation, improve the precision of operation, be the problem of the utility model institute desire solution.
The utility model content
Main purpose of the present utility model disposes the charging supply of pulse-width modulation device as the capacitance touching control switch for a kind of capacitance touching control equipment is provided.The pulse-width modulation device can be detected user's the highest equivalent capacitance value rapidly, the automatic the highest equivalent capacitance value of modulation operating impulse to be produced corresponding to user's human body, therefore the sensitivity of touch-control sensing be can adjust at the different users rapidly, the convenience and the accuracy of user's operation improved.
Secondary objective of the present utility model is for providing a kind of capacitance touching control equipment, dispose the sheet metal of voltage modulation device and a plurality of anti-interference usefulness, sheet metal corresponds to each capacitance touching control switch, voltage modulation device can be detected ambient condition rapidly, but the operating voltage of modulation is bestowed sheet metal, can effectively reduce the interference that surrounding enviroment are caused the capacitance touching control switch.
In order to solve the desirable not to the utmost part of above-mentioned prior art, the utility model provides a kind of capacitance touching control equipment, includes capacitive touch device, a plurality of capacitance touching control switches that are connected to capacitive touch device, pulse-width modulation device (PWM), a plurality of sheet metal and the voltage modulation device of micro control unit (MCU), connection micro control unit.Wherein, the capacitance touching control switch is connected to the pulse-width modulation device, and sheet metal is connected to voltage modulation device, and each sheet metal correspondence is arranged at the below of each capacitance touching control switch, and pulse-width modulation device and voltage modulation device all are connected to micro control unit.
The beneficial effects of the utility model are: a kind of capacitance touching control equipment is provided, disposes the charging supply of pulse-width modulation device as the capacitance touching control switch.The pulse-width modulation device can be detected user's the highest equivalent capacitance value rapidly, the automatic the highest equivalent capacitance value of modulation operating impulse to be produced corresponding to user's human body, therefore the sensitivity of touch-control sensing be can adjust at the different users rapidly, the convenience and the accuracy of user's operation improved.
The capacitance touching control equipment that the utility model provides, dispose the sheet metal of voltage modulation device and a plurality of anti-interference usefulness, sheet metal corresponds to each capacitance touching control switch, voltage modulation device can be detected ambient condition rapidly, but the operating voltage of modulation is bestowed sheet metal, can effectively reduce the interference that surrounding enviroment are caused the capacitance touching control switch.
Description of drawings
For further specifying technology contents of the present utility model, below in conjunction with embodiment and accompanying drawing describes in detail as after, wherein:
Fig. 1 is a block schematic diagram, and first preferred embodiment for the utility model provides is a kind of capacitance touching control equipment.
Fig. 2 is a structural representation, is first preferred embodiment that the utility model provides, and is a capacitance touching control equipment partial structurtes schematic diagram.
Embodiment
Because the utility model discloses a kind of capacitance touching control equipment, the capacitance touching control principle of wherein being utilized knows usually that for correlative technology field has the knowledgeable can understand, so with hereinafter explanation, no longer do complete description.Simultaneously, with the accompanying drawing that is hereinafter contrasted, be to express the structural representation relevant with the utility model feature, also do not need according to the complete drafting of actual size explanation in advance.
At first please refer to Fig. 1, be first preferred embodiment that the utility model proposes, be a kind of capacitance touching control equipment, a plurality of capacitance touching control switches 31,32,33,34 and 35 that include micro control unit 11, are connected to the capacitive touch device 12 of this micro control unit 11 and are connected to this capacitive touch device.Wherein, capacitance touching control equipment further includes pulse-width modulation device 13, a plurality of sheet metal 41,42,43,44 and 45 and voltage modulation device 14.Wherein, a plurality of capacitance touching control switches 31,32,33,34 and 35 are connected to pulse-width modulation device 13, a plurality of sheet metals 41,42,43,44 and 45 are connected to this voltage modulation device 14, and each sheet metal 41,42,43,44 and 45 correspondences are arranged at the below of each capacitance touching control switch 31,32,33,34 and 35, and pulse-width modulation device 13 all is connected to micro control unit 11 with voltage modulation device 14.Under preferable situation, sheet metal 41,42,43,44 and 45 and capacitance touching control switch 31,32,33,34 and 35 between, be provided with a printed circuit board (PCB) 50.
Please continue with reference to figure 1, when the user touches capacitance touching control switch 31,32,33, during 34 and 35 wherein any one capacitance touching control switch, capacitive touch device 12 transfers to micro control unit 11 with signal, by micro control unit 11, make pulse-width modulation device 13 at first do charging to the capacitance touching control switch of being touched with certain specific individual operating impulse, detect the equivalent capacity that is produced when user's operating capacitance touch is opened, then pulse-width modulation device 13 apace the size of modulation operating impulse to detect the equivalent capacity that the user is produced under various operating impulse, automatically find out wherein the highest equivalent capacitance value again, best equivalence electric capacity when setting user's operating capacitance touch switch for this reason, thus, the user just can obtain best accuracy when this capacitance touching control switch of operation and capacitance touching control equipment.What is more, when being replaced by another different new user, system can automatically implement said process, and best equivalence electric capacity and best accuracy in the time of just can obtaining new user's operating capacitance touch switch in the shortest time effectively solve the difficult problem in the background technology.
The mode of above-mentioned pulse-width modulation device 13 modulation operating impulses, can progressively change with the modulation operating impulse with the frequency of operation between the 72KHz to 91KHz, perhaps progressively change with the modulation operating impulse with the maximum power (duty) between 40% to 60%, both all can find out the highest equivalent capacitance value that the user produces in the very short time.
In addition, capacitance touching control equipment has operating voltage (VDD), but and voltage modulation device 14 have the operating voltage of the first default voltage, second voltage and modulation, second voltage is higher than first voltage.Wherein, the preferred values of first voltage is 0.6V, and the preferred values of second voltage is than the low 0.6V of operating voltage.Please also refer to Fig. 1 and Fig. 2, when the user touches 31,32,33,34 and 35 wherein any one capacitance touching control switch, by micro control unit 11, starting resistor changing device 14, voltage modulation device 14 is the detecting ambient condition rapidly, and but the operating voltage of modulation bestowed anti-interference sheet metal 41,42,43,44 and 45, can effectively isolate external environment (especially below metal desktop 60) to capacitance touching control switch 31,32,33,34 and 35, sensitivity and accuracy when improving 40 operations of capacitance touching control switch.
The above is preferred embodiment of the present invention only, is not in order to limit interest field of the present invention; Simultaneously above description should be understood and be implemented for those skilled in the art, so other does not break away from the equivalence of being finished under the disclosed spirit and change or modification, all should be included in the claim of application.
Claims (8)
1. a capacitive touch device includes a micro control unit, a plurality of capacitance touching control switches that are connected to the capacitive touch device of this micro control unit and are connected to this capacitive touch device, it is characterized in that:
This capacitance touching control equipment further includes a pulse-width modulation device, a plurality of sheet metal and a voltage modulation device, wherein, these a plurality of capacitance touching control switches are connected to this pulse-width modulation device, these a plurality of sheet metals are connected to this voltage modulation device, and each sheet metal correspondence is arranged at the below of each capacitance touching control switch, and this pulse-width modulation device and this voltage modulation device all are connected to this micro control unit.
2. according to the described capacitive touch device of claim 1, it is characterized in that wherein the area of each sheet metal is same as the area of each capacitance touching control switch.
3. according to the described capacitive touch device of claim 1, it is characterized in that wherein these a plurality of sheet metals are connected to each other.
4. according to the described capacitive touch device of claim 1, it is characterized in that, wherein these a plurality of capacitance touching control switches have a highest equivalent capacitance value, but this pulse-width modulation device has the operating impulse of a modulation, and this operating impulse is corresponding to this highest equivalent capacitance value.
5. according to the described capacitive touch device of claim 4, it is characterized in that wherein this operating impulse has a frequency of operation, this frequency of operation is between 72KHz and 91KHz.
6. according to the described capacitive touch device of claim 1, it is characterized in that wherein this pulse-width modulation device has a maximum power, this operating impulse has an operand power, this operand power between this maximum power 40% to 60% between.
7. according to the described capacitive touch device of claim 1, it is characterized in that, wherein this capacitance touching control equipment has an operating voltage, and but this voltage modulation device has the operating voltage of the first default voltage, second voltage and modulation, this operating voltage is between this first voltage and second voltage, and this first voltage and second voltage are all less than this operating voltage.
8. according to the described capacitive touch device of claim 7, it is characterized in that wherein this first voltage is 0.6V, this second voltage is higher than this first voltage, and this second voltage is than the low 0.6V of this operating voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201323394U CN201656945U (en) | 2010-02-26 | 2010-02-26 | Capacitance type touch control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201323394U CN201656945U (en) | 2010-02-26 | 2010-02-26 | Capacitance type touch control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201656945U true CN201656945U (en) | 2010-11-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201323394U Expired - Fee Related CN201656945U (en) | 2010-02-26 | 2010-02-26 | Capacitance type touch control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201656945U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI616795B (en) * | 2012-08-16 | 2018-03-01 | 微晶片科技德國公司 | Signal processing for a capacitive sensor system with robustness to noise |
-
2010
- 2010-02-26 CN CN2010201323394U patent/CN201656945U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI616795B (en) * | 2012-08-16 | 2018-03-01 | 微晶片科技德國公司 | Signal processing for a capacitive sensor system with robustness to noise |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20140226 |