CN106775177A - A kind of induced key detection method and detection means - Google Patents
A kind of induced key detection method and detection means Download PDFInfo
- Publication number
- CN106775177A CN106775177A CN201710080762.0A CN201710080762A CN106775177A CN 106775177 A CN106775177 A CN 106775177A CN 201710080762 A CN201710080762 A CN 201710080762A CN 106775177 A CN106775177 A CN 106775177A
- Authority
- CN
- China
- Prior art keywords
- induced key
- signal
- pulse
- processor
- key detection
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/96—Touch switches
- H03K17/962—Capacitive touch switches
- H03K17/9622—Capacitive touch switches using a plurality of detectors, e.g. keyboard
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M11/00—Coding in connection with keyboards or like devices, i.e. coding of the position of operated keys
- H03M11/003—Phantom keys detection and prevention
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electronic Switches (AREA)
Abstract
The present invention discloses a kind of induced key detection means and detection method, detection method includes that pulse generation module receives the push button signalling selected through port selector, generation pulse signal, counter receives the pulse signal, the counter is arranged in processor, the processor is processed the pulse signal that different time sections are received, and judges induced key state.The present invention, by software and hardware combining, using less hardware, and is the hardware that integrated level is high, relative to analog circuit connection, reduces the interference between device, and sensitivity is high.
Description
Technical field
The present invention relates to induced key technical field, more particularly to a kind of induced key detection means and detection method.
Background technology
Capacitive induction button is a kind of common contactless electronic button, compared to traditional mechanical key, is had
Waterproof, long lifespan, stable performance, the advantages of be quick on the draw, thus it is widely used in the control version of various electric equipment products
In the middle of face.
The principle of capacitive induction button application " relaxation oscillator " of prior art, but because rely primarily on hardware unit
Part, and circuit structure is complicated, causes to generate the technical problem of hardware cost calibration high and inconvenient.
The content of the invention
For above-mentioned technical problem, the present invention provides a kind of induced key detection means, on hardware, by multiplexing
Processor generally due timer and counter, realize the technique effect for reducing hardware cost, solve hardware cost
The high and low technical problem of flexibility.
A kind of induced key detection method, pulse generation module receives the push button signalling selected through port selector, generation
Pulse signal, counter receives the pulse signal, and the counter is arranged in processor, and the processor is to different time
The pulse signal that section is received is processed, and judges induced key state.
Described processor is processed the pulse signal that different time sections are received, and judges the tool of induced key state
Body step is：
A1, initialization pulse generation module and processor；
The pulse data signal several times that A2, treatment are read from each passage, obtains reference signal；
A3, triggering interrupt routine；
A4, in interrupt routine from current channel read pulsatile once signal data, as live signal；
A5, benchmark signal and live signal, if the absolute value of both differences is more than the threshold value of setting, then it represents that in
When disconnected
Interior induced key is pressed, and otherwise represents that induced key is not pressed；
A6, switch to next passage；
A7, jump out interrupt routine；
A8, when produce Interruption when, perform A3-A7.
Preferably, A6 the step of switch to next passage, can after the step A4, the step A5 it
Before.
Preferably, the pulse data signal is the cycle of oscillation number in the set time.The set time is by timing
Device sets, and the timer is used to produce Interruption.
The pulse data signal can also be the timing length of built-in oscillation cycle times.
Present invention employs the combination of software and hardware, on hardware, by multiplex processor generally due timer and counting
Device, reduces hardware cost, while improve flexibility, value cycle, parameters of operating part etc. can be adjusted by software.
The present invention also provides a kind of induced key detection means, including port selector, the pulse life being electrical connected successively
Into module and counter, the counter is arranged in processor, and the processor is also comprising for producing determining for Interruption
When device.
The pulse generation module is preferably relaxor.
In the application, the other end of the port selector is electrical connected with button.
Present invention employs the combination of software and hardware, hardware cost is reduced, while flexibility is improve, value cycle, portion
Part parameter etc. can be adjusted by software.
Brief description of the drawings
Fig. 1 is the example structure block diagram of capacitive induction key detection device one；
Fig. 2 is the typical circuit figure of pulse generation module in capacitive induction key detection device embodiment；
Fig. 3 is the interrupt routine flow chart in the embodiment of capacitive induction key detecting method.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Embodiment 1
Fig. 1 be capacitive induction key detection device typical structure, its mainly include several buttons, port selector,
Pulse generation module and processor, are provided with counter and timer in processor.Pulse generation module is received through port selector
The push button signalling of selection, generates pulse signal, counter return pulse signal, the pulse that processor is received to different time sections
Signal is processed, and judges induced key state.
In one embodiment, the circuit structure of pulse generation module is as shown in Fig. 2 constant-current source a is used as power supply, realization
Current control, improves the voltage linear degree of generation signal, and b is cap-sensor.
The present embodiment control module simplifies hardware circuit by software control, interrupts and gathered data is automatically performed, and drops
Low error, improves the degree of accuracy and sensitivity.
Embodiment 2
The method for detecting capacitive induction button using the device of above-described embodiment, by continuous acquisition pulse signal and right
Than whether electric capacity changes in judging the circuit of pulse generation module, accordingly, it is known that whether induced key is pressed, specifically
Comprise the following steps：
Step1, initialization pulse generation module and processor；
The pulse data signal several times that Step2, treatment are read from each passage, obtains reference signal；
Step3, triggering interrupt routine；
Step4, in interrupt routine from current channel read pulsatile once signal data, as live signal；
Step5, benchmark signal and live signal, if the absolute value of both differences is more than the threshold value of setting, table
Show that induced key is pressed in the break period, otherwise represent that induced key is not pressed；
Step6, switch to next passage；
Step7, jump out interrupt routine；
Step8, when produce Interruption when, perform step3-step7.
It it is above a sampling period, generally 1~2ms can set different cycles according to CPU disposal abilities.
Step1~step7 is repeated, reference signal and live signal is persistently contrasted, the state of induced key is detected.Interrupt journey
The triggering of sequence, is realized by the Interruption of the timer on hardware.
Fig. 3 is the interrupt routine flow chart in embodiment 2, and interrupt routine flow chart has specifically included step3~step7.
In some embodiments, " step6 switches to next passage " is between step4 and step5.
Pulse data signal can be that cycle of oscillation number, or pulse data signal in the set time are that fixation is shaken
Swing the timing length of cycle times.The wherein set time is set by timer.
In theory, the reading of live signal, it is also possible to realized by way of software main program is inquired about.
Technological means disclosed in the present invention program is not limited only to the technological means disclosed in above-mentioned implementation method, also includes
Constituted technical scheme is combined by above technical characteristic.
Claims (9)
1. a kind of induced key detection method, it is characterised in that：Pulse generation module receives the button selected through port selector
Signal, generates pulse signal, and counter receives the pulse signal, and the counter is arranged in processor, the processor
The pulse signal that different time sections are received is processed, induced key state is judged.
2. induced key detection method according to claim 1, it is characterised in that：Described processor is to different time sections
The pulse signal for receiving is processed, and judges concretely comprising the following steps for induced key state：
A1, initialization pulse generation module and processor；
The pulse data signal several times that A2, treatment are read from each passage, obtains reference signal；
A3, triggering interrupt routine；
A4, in interrupt routine from current channel read pulsatile once signal data, as live signal；
A5, benchmark signal and live signal, if the absolute value of both differences is more than the threshold value of setting, then it represents that during interruption
Interior induced key is pressed, and otherwise represents that induced key is not pressed；
A6, switch to next passage；
A7, jump out interrupt routine；
A8, when produce Interruption when, perform A3-A7.
3. induced key detection method according to claim 2, it is characterised in that：It is described the step of switch to next passage
A6, after the step A4, before the step A5.
4. the induced key detection method according to Claims 2 or 3, it is characterised in that：The pulse data signal is solid
Cycle of oscillation number in fixing time.
5. induced key detection method according to claim 4, it is characterised in that the set time is set by timer
Fixed, the timer is used to produce Interruption.
6. the induced key detection method according to Claims 2 or 3, it is characterised in that：The pulse data signal is solid
Determine the timing length of cycle of oscillation number of times.
7. a kind of induced key detection means, it is characterised in that：Including the port selector, the pulse generation mould that are electrical connected successively
Block and counter, the counter are arranged in processor, and the processor is also comprising the timer for producing Interruption.
8. induced key detection means according to claim 7, it is characterised in that the pulse generation module shakes for relaxation
Swing device.
9. induced key detection means according to claim 7, it is characterised in that the other end of the port selector with
Button is electrical connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710080762.0A CN106775177A (en) | 2017-02-15 | 2017-02-15 | A kind of induced key detection method and detection means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710080762.0A CN106775177A (en) | 2017-02-15 | 2017-02-15 | A kind of induced key detection method and detection means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106775177A true CN106775177A (en) | 2017-05-31 |
Family
ID=58958306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710080762.0A Pending CN106775177A (en) | 2017-02-15 | 2017-02-15 | A kind of induced key detection method and detection means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106775177A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108696271A (en) * | 2018-05-28 | 2018-10-23 | 珠海慧联科技有限公司 | A kind of slip gesture recognition methods and system based on capacitance touch button |
| CN109474266A (en) * | 2017-09-08 | 2019-03-15 | 佛山市顺德区美的电热电器制造有限公司 | Input unit, the detection method of input unit and household electrical appliance |
| CN112506095A (en) * | 2020-11-26 | 2021-03-16 | 杭州广安汽车电器有限公司 | Automatic test system and method for touch keys |
| CN112532226A (en) * | 2020-11-05 | 2021-03-19 | 广东瑞德智能科技股份有限公司 | Novel touch man-machine interaction processing method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101060321A (en) * | 2006-04-19 | 2007-10-24 | 北京希格玛和芯微电子技术有限公司 | Charge transport device, touch induction device and method |
| US20140333369A1 (en) * | 2013-05-08 | 2014-11-13 | Ite Tech. Inc. | Key module and signal generating method thereof |
| CN104253602A (en) * | 2013-06-27 | 2014-12-31 | 富泰华工业（深圳）有限公司 | Capacitive touch induction key and electronic device |
| CN102594327B (en) * | 2011-01-14 | 2015-04-15 | 苏州路之遥科技股份有限公司 | Capacitive sensing key and key detection method |
-
2017
- 2017-02-15 CN CN201710080762.0A patent/CN106775177A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101060321A (en) * | 2006-04-19 | 2007-10-24 | 北京希格玛和芯微电子技术有限公司 | Charge transport device, touch induction device and method |
| CN102594327B (en) * | 2011-01-14 | 2015-04-15 | 苏州路之遥科技股份有限公司 | Capacitive sensing key and key detection method |
| US20140333369A1 (en) * | 2013-05-08 | 2014-11-13 | Ite Tech. Inc. | Key module and signal generating method thereof |
| CN104253602A (en) * | 2013-06-27 | 2014-12-31 | 富泰华工业（深圳）有限公司 | Capacitive touch induction key and electronic device |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109474266A (en) * | 2017-09-08 | 2019-03-15 | 佛山市顺德区美的电热电器制造有限公司 | Input unit, the detection method of input unit and household electrical appliance |
| CN109474266B (en) * | 2017-09-08 | 2023-04-14 | 佛山市顺德区美的电热电器制造有限公司 | Input device, detection method of input device and household appliance |
| CN108696271A (en) * | 2018-05-28 | 2018-10-23 | 珠海慧联科技有限公司 | A kind of slip gesture recognition methods and system based on capacitance touch button |
| CN108696271B (en) * | 2018-05-28 | 2022-02-25 | 珠海慧联科技有限公司 | Sliding gesture recognition method and system based on capacitive touch keys |
| CN112532226A (en) * | 2020-11-05 | 2021-03-19 | 广东瑞德智能科技股份有限公司 | Novel touch man-machine interaction processing method |
| CN112532226B (en) * | 2020-11-05 | 2024-05-10 | 广东瑞德智能科技股份有限公司 | Novel touch man-machine interaction processing method |
| CN112506095A (en) * | 2020-11-26 | 2021-03-16 | 杭州广安汽车电器有限公司 | Automatic test system and method for touch keys |
| CN112506095B (en) * | 2020-11-26 | 2021-10-01 | 杭州广安汽车电器有限公司 | Automatic test system and method for touch keys |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106775177A (en) | A kind of induced key detection method and detection means | |
| US8797049B2 (en) | Low power capacitive touch detector | |
| JP4830789B2 (en) | Body motion detection device, information transmission device, Nordic walking stock, and walking exercise amount calculation system | |
| CN106168520B (en) | Sensor device and electric power steering apparatus using the same | |
| HK1080139A1 (en) | Device for monitoring the operating condition of a balance | |
| KR102374869B1 (en) | Method and device for sensor synchronization | |
| EP2290822A8 (en) | Counter circuit, AD conversion method, AD converter, semiconductor device for detecting distribution of physical quantities, and electronics apparatus | |
| CN102160290A (en) | Sensor, sensing method thereof, and filter therefor | |
| CN104939927A (en) | Wearing state detecting method and device of intelligent wearable device and intelligent wearable device | |
| KR20140012701A (en) | Measuring device and method for the detection of an approach to a hand-held device | |
| CN107884616A (en) | One kind is home-use can digital display multi-angle bending electroscope | |
| CN105318918A (en) | A non-magnetic flow metering device and a metering method thereof | |
| NO20044220L (en) | System and method for monitoring an electronic area | |
| CN108873763A (en) | Operating mode adjusting method, device and equipment | |
| KR101059079B1 (en) | Method for reducing power consumption of a device of touch sensing and the device | |
| JP4800782B2 (en) | Biological information measuring device | |
| GB2439019A (en) | Error recovery within processing stages of an integrated circuit | |
| CN105411544A (en) | Health wristwatch having power-saving switching function and power saving method of wristwatch | |
| FR2873298B1 (en) | IMPLANTABLE CARDIAC STIMULATOR WITH AUTOMATIC SENSOR PLACEMENT DETECTION AND HOUSING IMPLANTATION | |
| CN107884635A (en) | A kind of Current Mutual Inductance wireless timer and clocking method | |
| JP2015061103A (en) | Pulse reception circuit | |
| KR100695905B1 (en) | Apparatus for detecting variation of capacitance multi channel and method thereof | |
| JP2004328103A (en) | Error detector circuit | |
| CN105591642A (en) | Capacitive sensing relaxation oscillator | |
| EP2722985B1 (en) | Method of differential measurement of voltage levels of capacitive change. |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170531 |
|
| RJ01 | Rejection of invention patent application after publication |