CN103546138B - Touch key-press control circuit - Google Patents
Touch key-press control circuit Download PDFInfo
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- CN103546138B CN103546138B CN201310476965.3A CN201310476965A CN103546138B CN 103546138 B CN103546138 B CN 103546138B CN 201310476965 A CN201310476965 A CN 201310476965A CN 103546138 B CN103546138 B CN 103546138B
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- microprocessor
- touch key
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- touch
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Abstract
The present invention discloses a kind of touch key-press control circuit, including from microprocessor and master microprocessor.It is used to receive touch signal caused by touch key-press from microprocessor.Master microprocessor is used to receive the touch signal through from microprocessor conversion, and an I/O ports of the master microprocessor are connected by resistance with the reseting port from microprocessor.The duration for the touch signal that the master microprocessor is changed to the warp of reception from microprocessor detects, and when the touch signal after detecting conversion does not change more than setting time T, master microprocessor is by its I/O port to being resetted from microprocessor.Due to inventive touch key control circuit master microprocessor by its I/O port to being resetted from microprocessor, so as to avoid because of touch key-press failure or failure and caused by operation irregularity.
Description
Technical field
The present invention relates to field of circuit technology, and in particular to a kind of touch key-press control circuit.
Background technology
With the development of control technology, more and more electrical equipment has used touch key-press now, uses the electricity of touch key-press
Device generally has two microprocessors, and a microprocessor is used for the touch signal for receiving and changing touch key-press, a microprocessor
Device is used to handle touch signal, but when touch key-press failure or failure, receive and change the touch signal of touch key-press
Microprocessor can lose transformation and be in deadlock state or other touch key-press signals can not be received, now processing is touched
Although the microprocessor for touching signal identifies that touch key-press failure can not but handle the touch signal of other touch key-press, if right
Electrical equipment resets the storage information or loss of state that can cause to work again, causes whole work not to be normally carried out.
The content of the invention
It is an object of the invention to provide a kind of touch key-press control circuit, it is intended to solves touch key-press failure or failure
Caused by operation irregularity technical problem.
In order to realize the purpose of the present invention, the present invention provides a kind of touch key-press control circuit, including：
For producing the touch key-press of touch signal；
For receive and change touch signal caused by touch key-press from microprocessor, should have from microprocessor and reset
Port, the reseting port connect voltage source by resistance；
For receiving the master microprocessor through the touch signal from microprocessor conversion, the master microprocessor has an I/O
Port, the I/O ports are connected by resistance with the reseting port from microprocessor；
The duration for the touch signal that the master microprocessor is changed to the warp of reception from microprocessor detects, and is detecting
When touch signal after to conversion does not change more than setting time T, master microprocessor controls itself and the reset from microprocessor
The I/O ports of port connection export low level with to being resetted from microprocessor.
Preferably, it is described that there is I/O ports from microprocessor, connected and touched by resistance from the I/O ports of microprocessor
Button.
Preferably, the master microprocessor and FPDP, the FPDP of master microprocessor are respectively provided with from microprocessor
It is connected with the FPDP from microprocessor, for receiving through the touch signal from microprocessor conversion.
Preferably, the master microprocessor and the FPDP from microprocessor are RX ports.
Preferably, it is also associated with electric capacity between the ground of the reseting port and voltage source from microprocessor.
Due to inventive touch key control circuit master microprocessor I/O ports by resistance with from microprocessor
Reseting port connects, and is connected from the reseting port of microprocessor by resistance with voltage source, the master microprocessor to reception from
The duration of touch signal after the conversion that microprocessor is sent is detected, if detecting, the touch signal after conversion is more than setting
Time, T did not change, then master microprocessor judges that corresponding touch key-press breaks down, then master microprocessor control its with from
The I/O ports of the reseting port connection of microprocessor export low level and made from microprocessor reset, so as to avoid because touching
Touch button malfunction or failure and cause operation irregularity.
Brief description of the drawings
Fig. 1 is the circuit diagram of inventive touch key control circuit.
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
It should be appreciated that specific embodiment described herein is not intended to limit the present invention only to explain the present invention.
The present invention provides a kind of touch key-press control circuit.Referring to Fig. 1, there is disclosed inventive touch by key control electricity
One embodiment on road, in the present embodiment, touch key-press control circuit include master microprocessor 100, from microprocessor 200 and touch
Touch button 300.
Touch key-press 300 is connected from the I/O ports of microprocessor 200 by resistance, when pressing touch key-press 300, is touched
Touch signal can be produced by touching button 300, and touch signal caused by touch key-press 300 is received from microprocessor 200 by I/O ports
And touch signal is changed, and from microprocessor 200 by the touch signal after conversion by FPDP be sent to master it is micro-
Processor 100, in the present embodiment, the touch signal after conversion is sent to by RX ports from microprocessor 200 and led from micro-
Manage device 100.The quantity of the touch key-press 300 is depending on real needs, when the quantity of touch key-press 300 is more than from microprocessor
During the I/O port numbers of device 200, multiple it can be produced by setting from microprocessor 200 to receive and change touch key-press 300
Touch signal.
The FPDP of master microprocessor 100 is connected with from the FPDP of microprocessor 200, so as to master microprocessor 100
Receive from microprocessor 200 send conversion after touch signal, in the present embodiment, the RX ports of master microprocessor 100 with
Connected from the RX ports of microprocessor 200 to realize the transmission of the touch signal after conversion.Master microprocessor 100 is changed to receiving
Touch signal afterwards is handled to control miscellaneous equipment to work, so as to perform function corresponding to corresponding touch key-press 300.
For avoid because of the failure of touch key-press 300 or failure and caused by operation irregularity, an I/O ends of master microprocessor 100
Mouth also passes through resistance R01 and the reseting port from microprocessor 200（RES）Connection, and lead to from the reseting port of microprocessor 200
Cross resistance R02 to be connected with voltage source VDD, the master microprocessor 100 is to the touch after receiving the conversion sent from microprocessor 200
The duration of signal is detected, if detecting, the touch signal after conversion does not change more than setting time T, master microprocessor
100 judge that corresponding touch key-press breaks down, so as to which master microprocessor 100 controls itself and the reset terminal from microprocessor 200
The I/O ports output low level of mouth connection, so as to drag down the level of the reseting port from microprocessor 200, thus make from micro-
Processor 200 reset to avoid because of the failure of touch key-press 300 or failure and caused by operation irregularity.
In addition, to prevent when from 200 initial turn-on power supply of microprocessor, because master microprocessor 100 does not control in time
Its I/O port being connected with from the reseting port of microprocessor 200 exports high level and causes to reset by mistake from microprocessor 200,
The present embodiment touch key-press control circuit is also associated between the reseting port of microprocessor 200 and voltage source VDD ground
Electric capacity C01, therefore when from 200 initial turn-on power supply of microprocessor, voltage source VDD charges to electric capacity C01, so as to maintain
High level is in from the reseting port of microprocessor 200 to prevent from resetting from microprocessor 200 by mistake.
Due to inventive touch key control circuit master microprocessor 100 an I/O ports by resistance R01 with from micro-
The reseting port connection of processor 200, and be connected from the reseting port of microprocessor 200 by resistance R02 with voltage source VDD,
The master microprocessor 100 detects to the duration of the touch signal after receiving the conversion sent from microprocessor 200, if detection
Touch signal after to conversion does not change more than setting time T, then master microprocessor 100 judges that corresponding touch key-press occurs
Failure, then master microprocessor 100 control its I/O port for be connected with from the reseting port of microprocessor 200 to export low level
And make to reset from microprocessor 200, so as to avoid because of the failure of touch key-press 300 or failure and caused by operation irregularity.
The preferred embodiments of the present invention are these are only, are not intended to limit the scope of the invention, it is every to utilize this hair
The equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (3)
- A kind of 1. touch key-press control circuit, it is characterised in that including：For producing the touch key-press of touch signal；For receive and change touch signal caused by touch key-press from microprocessor, should have reset terminal from microprocessor Mouthful, the reseting port connects voltage source by resistance；For receiving the master microprocessor through the touch signal from microprocessor conversion, the master microprocessor has an I/O ports, The I/O ports are connected by resistance with the reseting port from microprocessor；The duration for the touch signal that the master microprocessor is changed to the warp of reception from microprocessor detects, and turns detecting When touch signal after changing does not change more than setting time T, master microprocessor controls itself and the reseting port from microprocessor The I/O ports of connection export low level with to being resetted from microprocessor；The master microprocessor and be respectively provided with FPDP from microprocessor, the FPDP of master microprocessor with from microprocessor FPDP connection, for receive through from microprocessor conversion touch signal；Electric capacity is also associated between the ground of the reseting port and voltage source from microprocessor.
- 2. touch key-press control circuit as claimed in claim 1, it is characterised in that it is described that there is I/O ports from microprocessor, Touch key-press is connected by resistance from the I/O ports of microprocessor.
- 3. touch key-press control circuit as claimed in claim 1, it is characterised in that the master microprocessor and from microprocessor FPDP be RX ports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310476965.3A CN103546138B (en) | 2013-10-12 | 2013-10-12 | Touch key-press control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310476965.3A CN103546138B (en) | 2013-10-12 | 2013-10-12 | Touch key-press control circuit |
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| Publication Number | Publication Date |
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| CN103546138A CN103546138A (en) | 2014-01-29 |
| CN103546138B true CN103546138B (en) | 2017-11-14 |
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| CN201310476965.3A Active CN103546138B (en) | 2013-10-12 | 2013-10-12 | Touch key-press control circuit |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104090690A (en) * | 2014-07-18 | 2014-10-08 | 开平市玛格纳卫浴有限公司 | Touch-type water feeding control device |
| CN109831567B (en) * | 2018-11-15 | 2021-01-19 | 芯海科技（深圳）股份有限公司 | Method and system for improving reliability of pressure sensing power key of mobile terminal |
| CN112486303A (en) * | 2020-11-27 | 2021-03-12 | 深圳创维汽车智能有限公司 | Vehicle-mounted display screen reset control method, device and system and computer storage medium |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102411981A (en) * | 2011-11-15 | 2012-04-11 | 北京百纳威尔科技有限公司 | Mobile terminal and voice recording and displaying method |
| CN102541167A (en) * | 2010-12-23 | 2012-07-04 | 鸿富锦精密工业（深圳）有限公司 | Electronic device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050056662A1 (en) * | 2003-09-16 | 2005-03-17 | Graham Packaging Company, L.P. | Contour for tube seals to facilitate mounting of a product evacuation device |
| CN101599769A (en) * | 2009-06-01 | 2009-12-09 | 康佳集团股份有限公司 | A kind of fault-tolerance approach of touch induction buttons |
| CN102368171B (en) * | 2011-09-19 | 2013-07-03 | 惠州Tcl移动通信有限公司 | Automatic recovering system of touch screen controller |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102541167A (en) * | 2010-12-23 | 2012-07-04 | 鸿富锦精密工业（深圳）有限公司 | Electronic device |
| CN102411981A (en) * | 2011-11-15 | 2012-04-11 | 北京百纳威尔科技有限公司 | Mobile terminal and voice recording and displaying method |
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| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yang Liping Inventor after: Qiao Weijun Inventor after: Yang Le Inventor after: Fang Zhen Inventor after: Huang Bing Inventor after: Yuan Hongbin Inventor after: Li Xinhe Inventor after: Huang Shufeng Inventor after: Huang Kaiping Inventor after: Ma Baizhong Inventor after: Lei Jun Inventor after: Dong Yuan Inventor after: Zhang Yongliang Inventor before: Li Xinhe Inventor before: Yuan Hongbin Inventor before: Yang Le Inventor before: Fang Zhen Inventor before: Huang Bing Inventor before: Yang Liping Inventor before: Huang Shufeng Inventor before: Huang Kaiping Inventor before: Ma Baizhong Inventor before: Lei Jun Inventor before: Dong Yuan Inventor before: Zhang Yongliang Inventor before: Qiao Weijun |
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Free format text: CORRECT: INVENTOR; FROM: LI XINHE YANG LIPING HUANG SHUFENG HUANG KAIPING MA BAIZHONG LEI JUN DONG YUAN ZHANG YONGLIANG QIAO WEIJUN YUAN HONGBIN YANG LE FANG ZHEN HUANG BING TO: YANG LIPING YUAN HONGBIN LI XINHE HUANG SHUFENG HUANG KAIPING MA BAIZHONG LEI JUN DONG YUAN ZHANG YONGLIANG QIAO WEIJUN YANG LE FANG ZHEN HUANG BING |
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