CN203504522U - Touch key control circuit and air conditioner - Google Patents
Touch key control circuit and air conditioner Download PDFInfo
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- CN203504522U CN203504522U CN201320614918.6U CN201320614918U CN203504522U CN 203504522 U CN203504522 U CN 203504522U CN 201320614918 U CN201320614918 U CN 201320614918U CN 203504522 U CN203504522 U CN 203504522U
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Abstract
The utility model discloses a touch key control circuit and an air conditioner provided with the touch key control circuit. The touch key control circuit comprises a capacitor charging and discharging sub-circuit used for regulating the detection sensitivity and a control chip connected with the capacitor charging and discharging sub-circuit; the control chip comprises a control module used for controlling the air conditioner to operate and a detection module used for detecting the state of a touch key, wherein the detection module is connected with the capacitor charging and discharging sub-circuit and the touch key and outputs control signals to the capacitor charging and discharging sub-circuit so as to control the capacitor charging and discharging sub-circuit to carry out charging and discharging, and the detection module analyzes key information according to the discharging time of the capacitor charging and discharging sub-circuit and outputs the key information to the control module, and the control module carries out corresponding operations according to the key information. The touch key control circuit disclosed by the utility model improves the reliability of data transmission, and improves the pressing speed of the key.
Description
Technical field
The utility model relates to air-conditioning technical field, particularly a kind of touch key-press control circuit and air conditioner.
Background technology
As everyone knows, the touch key-press part of the air conditioner on present market, all by touching chip and main control chip, form, touching chip and main control chip is welded on respectively on pcb board, touch chip and only detect key-press status, and sending key-press status information to main control chip, concrete function is processed by main control chip.Therefore touching chip detection is transferred to main control chip to key-press status informational needs by data wire, because transmission needs the regular hour, and the easy distortion of process data of transmission data, the anti-dry ability of scratching, thereby cause the reliability of transfer of data poor, the speed of keystroke handling is slower.
Utility model content
Main purpose of the present utility model is to provide a kind of touch key-press control circuit, is intended to improve the reliability of transfer of data, improves the speed of keystroke handling.
To achieve these goals, the utility model provides a kind of touch key-press control circuit, and described touch key-press control circuit comprises for regulating the capacitor charge and discharge electronic circuit and the control chip being connected with this capacitor charge and discharge electronic circuit of detection sensitivity; Described control chip comprises for controlling the control module of air conditioner work and for detection of the detection module of touch key-press state, wherein said detection module is connected with touch key-press with described capacitor charge and discharge electronic circuit respectively, output control signals to described capacitor charge and discharge electronic circuit, to control described capacitor charge and discharge electronic circuit, discharge and recharge, described detection module is according to analysis button information discharge time of described capacitor charge and discharge electronic circuit, and exporting described key information to described control module, described control module is carried out corresponding operating according to described key information.
Preferably, described detection module comprises comparator, keystroke handling unit, the first adjustment of sensitivity end, charging control end, control of discharge end, the some links that are electrically connected to described touch key-press, the first electronic switch connecting one to one with described link, for controlling the second electronic switch of described the first adjustment of sensitivity end ground connection, for controlling the 3rd electronic switch of described control of discharge end ground connection, for controlling the quadrielectron switch that described charging control end is connected with preset voltage end, the one input reference voltage terminal preset with of wherein said comparator is connected, another input is connected with described the first adjustment of sensitivity end, output is connected with described keystroke handling unit, the control end of described the first electronic switch is connected with described keystroke handling unit, and described keystroke handling unit outputs control signals to described the first electronic switch, to control the connection status of described link and described the first adjustment of sensitivity end, described keystroke handling unit is connected with the control end of quadrielectron switch with the control end of described the second electronic switch, the control end of the 3rd electronic switch respectively.
Preferably, described capacitor charge and discharge electronic circuit comprises the first electric capacity, the second electric capacity and the first resistance, one end of wherein said the first electric capacity is connected with described the first adjustment of sensitivity end, and the other end is connected with one end of described the second electric capacity by the first resistance, the other end ground connection of described the second electric capacity; The public connecting end of described the first electric capacity and the first resistance is connected to described control of discharge end, and the public connecting end of described the second electric capacity and the first resistance is connected to described charging control end.
Preferably, described detection module also comprises at least one the second adjustment of sensitivity end and the 5th electronic switch connecting one to one with described the second adjustment of sensitivity end, and described the second adjustment of sensitivity end is connected with described the first adjustment of sensitivity end; The control end of described the 5th electronic switch is connected with described keystroke handling unit, and described keystroke handling unit outputs control signals to described the 5th electronic switch, to control described the second adjustment of sensitivity end ground connection; Described capacitor charge and discharge electronic circuit also comprises the 3rd electric capacity, and one end of described the 3rd electric capacity is connected with described the first adjustment of sensitivity end, and the other end is connected with described the second adjustment of sensitivity end.
Preferably, described touch key-press control circuit also comprises the second resistance connecting one to one with described link, and one end of described the second resistance is connected with link, and the other end touches the corresponding connection of end with one of described touch key-press.
The utility model also provides a kind of air conditioner, and described air conditioner comprises the button of touch key-press control circuit and the touch being connected with described touch key-press control circuit; Described touch key-press control circuit comprises for regulating the capacitor charge and discharge electronic circuit and the control chip being connected with this capacitor charge and discharge electronic circuit of detection sensitivity; Described control chip comprises for controlling the control module of air conditioner work and for detection of the detection module of touch key-press state, wherein said detection module is connected with touch key-press with described capacitor charge and discharge electronic circuit respectively, output control signals to described capacitor charge and discharge electronic circuit, to control described capacitor charge and discharge electronic circuit, discharge and recharge, described detection module is according to analysis button information discharge time of described capacitor charge and discharge electronic circuit, and exporting described key information to described control module, described control module is carried out corresponding operating according to described key information.
Preferably, described touch key-press is capacitance touch display screen.
The utility model is by by the detection module for detection of touch key-press state and integrated in the middle of same chip for controlling the control module of air conditioner work, so the utility model has improved the integrated level of chip.With respect to prior art, pass through a chip detection key information, and by data wire, export the key information detecting to another control chip, thereby by another control chip, control air conditioner and carry out corresponding operation, the utility model can reduce key information transmission range, thereby improve the reliability of transfer of data, improve the speed of keystroke handling.
Accompanying drawing explanation
Fig. 1 is the electrical block diagram of the utility model touch key-press control circuit one embodiment;
Fig. 2 is the electrical block diagram of another embodiment of the utility model touch key-press control circuit.
The realization of the utility model object, functional characteristics and advantage, in connection with embodiment, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
The utility model provides a kind of touch key-press control circuit.
See figures.1.and.2, Fig. 1 is the electrical block diagram of the utility model touch key-press control circuit one embodiment; Fig. 2 is the electrical block diagram of another embodiment of the utility model touch key-press control circuit.The touch key-press control circuit that the present embodiment provides comprises for regulating the capacitor charge and discharge electronic circuit 10 and the control chip 20 being connected with this capacitor charge and discharge electronic circuit 10 of detection sensitivity, described control chip 20 comprises for controlling the control module 21 of air conditioner work and for detection of the detection module 22 of touch key-press 30 states, wherein said detection module 22 is connected with touch key-press 30 with described capacitor charge and discharge electronic circuit 10 respectively, output control signals to described capacitor charge and discharge electronic circuit 10, to control described capacitor charge and discharge electronic circuit 10, discharge and recharge, described detection module 22 is according to analysis button information discharge time of described capacitor charge and discharge electronic circuit 10, and export described key information to described control module 21, described control module 21 is carried out corresponding operating according to described key information.
In the present embodiment, above-mentioned touch key-press 30 is capacitance touch display screen.Capacitance touch display screen comprises a plurality of touch ends 31 with predetermined capacitance, and when human body does not touch this touch end 31, this capacitance that touches end 31 is less; When human body touch, this touches and holds 31, this capacitance that touches end 31 will increase.During work, above-mentioned capacitor charge and discharge electronic circuit 10 discharges the touch end 31 by above-mentioned touch key-press 30, owing to touching the capacitance of end 31, will change with finger touch condition, whether the touch end 31 of the current detection of can discharging the discharge time that therefore can discharge and recharge electronic circuit 10 by Detection capacitance is touched by finger.
The utility model is by being integrated in the middle of same chip by the detection module 22 for detection of touch key-press 30 states with for controlling the control module 21 of air conditioner work, so the utility model has improved the integrated level of chip.With respect to prior art, pass through a chip detection key information, and by data wire, export the key information detecting to another control chip, thereby by another control chip, control air conditioner and carry out corresponding operation, the utility model can reduce key information transmission range, thereby improve the reliability of transfer of data, improve the speed of keystroke handling.
Particularly, based on above-described embodiment, in the present embodiment, above-mentioned detection module 22 comprises comparator 221, keystroke handling unit 222, the first adjustment of sensitivity end A1, charging control end A2, control of discharge end A3, the some link A4 that are electrically connected to described touch key-press, the the first electronic switch K1 connecting one to one with described link A4, for controlling the second electronic switch K2 of described the first adjustment of sensitivity end A1 ground connection, for controlling the 3rd electronic switch K3 of described control of discharge end A3 ground connection, for controlling the quadrielectron K switch 4 that described charging control end A2 is connected with preset voltage end, the one input reference voltage terminal Vref preset with of wherein said comparator 221 is connected, another input is connected with described the first adjustment of sensitivity end A1, output is connected with described keystroke handling unit 222, the control end of described the first electronic switch K1 is connected with described keystroke handling unit 222, and described keystroke handling unit 222 outputs control signals to described the first electronic switch K1, to control the connection status of described link A4 and described the first adjustment of sensitivity end A1, described keystroke handling unit 222 is connected with the control end of quadrielectron K switch 4 with the control end of described the second electronic switch K2, the control end of the 3rd electronic switch K3 respectively.
It should be noted that above-mentioned the first adjustment of sensitivity end A1 can be connected to positive input or the reverse input end of comparator 221, does not limit further at this.The positive input of the first adjustment of sensitivity end A1 and comparator 221 of take in following examples is made detailed description as example.The voltage swing of said reference voltage end Vref can arrange according to actual needs, as long as guarantee in discharge process, can make the output of comparator 221 produce turnover voltage.Above-mentioned preset voltage end can be the power end VCC of control chip 20.
Above-mentioned capacitor charge and discharge electronic circuit 10 comprises the first capacitor C 1, the second capacitor C 2 and the first resistance R 1, one end of wherein said the first capacitor C 1 is connected with described the first adjustment of sensitivity end A1, the other end is connected with one end of described the second capacitor C 2 by the first resistance R 1, the other end ground connection of described the second capacitor C 2; The public connecting end of described the first capacitor C 1 and the first resistance R 1 is connected to described control of discharge end A3, and the public connecting end of described the second capacitor C 2 and the first resistance R 1 is connected to described charging control end A2.
Particularly, above-mentioned touch key-press control circuit also comprises the second resistance R 2 connecting one to one with described link A4, and one end of described the second resistance R 2 is connected with link A4, and the other end touches end 31 corresponding connections with one of described touch key-press 30.The quantity that it should be noted that above-mentioned link A4 can arrange according to actual needs, and in the present embodiment, this link A4 is preferably 16.
When work, first by keystroke handling unit 222, output control signals to the first electronic switch K1, make one first electronic switch K1 closed, thereby a link A4 is connected with the positive input of comparator 221.Then export control signal and control the second electronic switch K2 disconnection, the 3rd electronic switch K3 disconnection, quadrielectron K switch 4 closures, by power end VCC, the second capacitor C 2 is charged, now the voltage of comparator 221 positive inputs is greater than the voltage of reference voltage terminal Vref, and the output of comparator 221 is exported a high level; When charging makes the voltage at the second capacitor C 2 two ends reach preset value, by keystroke handling unit 222 output control signals, control the second electronic switch K2 closure, the 3rd electronic switch K3 closure, 4 disconnections of quadrielectron K switch, thereby the second capacitor C 2 is carried out to discharge process.In the process of electric discharge, the voltage of the positive input of comparator 221 reduces gradually, and when the voltage of comparator 221 positive inputs is less than the voltage of reference voltage terminal Vref, the output of comparator 221 is by output low level.
The touch that touches above-mentioned touch key-press 30 due to human finger is held and will be changed to touching the capacitance of end 31 for 31 o'clock, when the touch that does not touch above-mentioned touch key-press 30 when human finger holds 31, the capacitance that touches end 31 is less, the velocity of discharge of the second capacitor C 2 is slower, thereby it is longer to make the voltage of comparator 221 positive inputs arrive time of the voltage be less than reference voltage terminal Vref; When the touch that touches above-mentioned touch key-press 30 when human finger holds 31, the capacitance that touches end 31 increases, the velocity of discharge of the second capacitor C 2 is accelerated, thereby the voltage that makes comparator 221 positive inputs arrives the time of the voltage be less than reference voltage terminal Vref and shortens, whether keystroke handling unit 222 there is situation about being touched by human finger according to the touch end 31 of time series analysis current detection that receives the trailing edge triggering signal of comparator 221.After having detected a touch end 31, by above-mentioned same mode cyclic switching, touch the annexation of end 31 and comparator 221 positive inputs, thus the detection of realization to touch key-press.
Further, because above-mentioned the first capacitor C 1 only can realize the adjusting that 8 tunnels touch the sensitivity of end 31, in the present embodiment, also can pass through a plurality of electric capacity in parallel, thereby realize the adjusting of the sensitivity of Multi-way touch end 31.Particularly, in the present embodiment, above-mentioned detection module 22 also comprises at least one the second adjustment of sensitivity end A5 and the 5th electronic switch K5 connecting one to one with described the second adjustment of sensitivity end A5, and described the second adjustment of sensitivity end A5 is connected with described the first adjustment of sensitivity end A1; The control end of described the 5th electronic switch K5 is connected with described keystroke handling unit 222, and described keystroke handling unit 222 outputs control signals to described the 5th electronic switch K5, to control described the second adjustment of sensitivity end A5 ground connection; Described capacitor charge and discharge electronic circuit 10 also comprises the 3rd capacitor C 3, and one end of described the 3rd capacitor C 3 is connected with described the first adjustment of sensitivity end A1, and the other end is connected with described the second adjustment of sensitivity end A5.
The utility model also provides a kind of air conditioner, this air conditioner comprises the button of touch key-press control circuit and the touch being connected with described touch key-press control circuit, this touch key-press is capacitance touch display screen, and the structure of this touch key-press control circuit can, with reference to above-described embodiment, not repeat them here.Naturally, because the air conditioner of the present embodiment has adopted the technical scheme of above-mentioned touch key-press control circuit, so this air conditioner has all beneficial effects of above-mentioned touch key-press control circuit.
These are only preferred embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model specification and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (7)
1. a touch key-press control circuit, is characterized in that, comprises for regulating the capacitor charge and discharge electronic circuit and the control chip being connected with this capacitor charge and discharge electronic circuit of detection sensitivity; Described control chip comprises for controlling the control module of air conditioner work and for detection of the detection module of touch key-press state, wherein said detection module is connected with touch key-press with described capacitor charge and discharge electronic circuit respectively, output control signals to described capacitor charge and discharge electronic circuit, to control described capacitor charge and discharge electronic circuit, discharge and recharge, described detection module is according to analysis button information discharge time of described capacitor charge and discharge electronic circuit, and exporting described key information to described control module, described control module is carried out corresponding operating according to described key information.
2. touch key-press control circuit as claimed in claim 1, it is characterized in that, described detection module comprises comparator, keystroke handling unit, the first adjustment of sensitivity end, charging control end, control of discharge end, the some links that are electrically connected to described touch key-press, the first electronic switch connecting one to one with described link, for controlling the second electronic switch of described the first adjustment of sensitivity end ground connection, for controlling the 3rd electronic switch of described control of discharge end ground connection, for controlling the quadrielectron switch that described charging control end is connected with preset voltage end, the one input reference voltage terminal preset with of wherein said comparator is connected, another input is connected with described the first adjustment of sensitivity end, output is connected with described keystroke handling unit, the control end of described the first electronic switch is connected with described keystroke handling unit, and described keystroke handling unit outputs control signals to described the first electronic switch, to control the connection status of described link and described the first adjustment of sensitivity end, described keystroke handling unit is connected with the control end of quadrielectron switch with the control end of described the second electronic switch, the control end of the 3rd electronic switch respectively.
3. touch key-press control circuit as claimed in claim 2, it is characterized in that, described capacitor charge and discharge electronic circuit comprises the first electric capacity, the second electric capacity and the first resistance, one end of wherein said the first electric capacity is connected with described the first adjustment of sensitivity end, the other end is connected with one end of described the second electric capacity by the first resistance, the other end ground connection of described the second electric capacity; The public connecting end of described the first electric capacity and the first resistance is connected to described control of discharge end, and the public connecting end of described the second electric capacity and the first resistance is connected to described charging control end.
4. touch key-press control circuit as claimed in claim 3, it is characterized in that, described detection module also comprises at least one the second adjustment of sensitivity end and the 5th electronic switch connecting one to one with described the second adjustment of sensitivity end, and described the second adjustment of sensitivity end is connected with described the first adjustment of sensitivity end; The control end of described the 5th electronic switch is connected with described keystroke handling unit, and described keystroke handling unit outputs control signals to described the 5th electronic switch, to control described the second adjustment of sensitivity end ground connection; Described capacitor charge and discharge electronic circuit also comprises the 3rd electric capacity, and one end of described the 3rd electric capacity is connected with described the first adjustment of sensitivity end, and the other end is connected with described the second adjustment of sensitivity end.
5. touch key-press control circuit as claimed in claim 2, it is characterized in that, described touch key-press control circuit also comprises the second resistance connecting one to one with described link, and one end of described the second resistance is connected with link, and the other end touches the corresponding connection of end with one of described touch key-press.
6. an air conditioner, is characterized in that, comprise touch key-press control circuit as described in any one in claim 1 to 5 with as described in the button of the touch that is connected of touch key-press control circuit.
7. air conditioner as claimed in claim 6, is characterized in that, described touch key-press is capacitance touch display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320614918.6U CN203504522U (en) | 2013-09-29 | 2013-09-29 | Touch key control circuit and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320614918.6U CN203504522U (en) | 2013-09-29 | 2013-09-29 | Touch key control circuit and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203504522U true CN203504522U (en) | 2014-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320614918.6U Expired - Lifetime CN203504522U (en) | 2013-09-29 | 2013-09-29 | Touch key control circuit and air conditioner |
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| CN (1) | CN203504522U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110791A (en) * | 2014-04-29 | 2014-10-22 | 邯郸美的制冷设备有限公司 | Method and device for controlling display and key integrated air conditioner |
| CN104535876A (en) * | 2015-02-03 | 2015-04-22 | 深圳芯邦科技股份有限公司 | Determination method and system of charging/discharging frequency of capacitor |
| CN105015664A (en) * | 2015-07-30 | 2015-11-04 | 徐开友 | Touch display screen bicycle speed meter and manufacturing method thereof |
| CN109302188A (en) * | 2017-07-25 | 2019-02-01 | 厦门雅迅网络股份有限公司 | A kind of detection method and circuit of the line control push-button of electric resistance partial pressure type |
| CN109656417A (en) * | 2019-01-11 | 2019-04-19 | 深圳市乔威电源有限公司 | A kind of touch control device |
| CN110793150A (en) * | 2019-11-18 | 2020-02-14 | 珠海格力电器股份有限公司 | Adaptive adjustment method of capacitive touch key, wire controller and air conditioner |
-
2013
- 2013-09-29 CN CN201320614918.6U patent/CN203504522U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110791A (en) * | 2014-04-29 | 2014-10-22 | 邯郸美的制冷设备有限公司 | Method and device for controlling display and key integrated air conditioner |
| CN104110791B (en) * | 2014-04-29 | 2017-07-04 | 邯郸美的制冷设备有限公司 | The control method and device of the air-conditioner that display and button are integrated |
| CN104535876A (en) * | 2015-02-03 | 2015-04-22 | 深圳芯邦科技股份有限公司 | Determination method and system of charging/discharging frequency of capacitor |
| CN104535876B (en) * | 2015-02-03 | 2017-10-03 | 深圳芯邦科技股份有限公司 | A kind of capacitor charging/discharging frequency determination methods and system |
| CN105015664A (en) * | 2015-07-30 | 2015-11-04 | 徐开友 | Touch display screen bicycle speed meter and manufacturing method thereof |
| CN109302188A (en) * | 2017-07-25 | 2019-02-01 | 厦门雅迅网络股份有限公司 | A kind of detection method and circuit of the line control push-button of electric resistance partial pressure type |
| CN109656417A (en) * | 2019-01-11 | 2019-04-19 | 深圳市乔威电源有限公司 | A kind of touch control device |
| CN109656417B (en) * | 2019-01-11 | 2024-05-07 | 深圳市乔威电源有限公司 | Touch control equipment |
| CN110793150A (en) * | 2019-11-18 | 2020-02-14 | 珠海格力电器股份有限公司 | Adaptive adjustment method of capacitive touch key, wire controller and air conditioner |
| CN110793150B (en) * | 2019-11-18 | 2020-10-27 | 珠海格力电器股份有限公司 | Adaptive adjustment method of capacitive touch key, wire controller and air conditioner |
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Granted publication date: 20140326 |