CN104898763A - Turn button control-adjustment method and system of vehicle-mounted encoder - Google Patents
Turn button control-adjustment method and system of vehicle-mounted encoder Download PDFInfo
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Abstract
The invention provides a turn button control-adjustment method and system of a vehicle-mounted encoder. The potentials of a phase-A port and a phase-B port of an encoder circuit are collected every first preset time, and whether the collected potentials change in the first preset time is determined; if the potentials change, whether the phase-A port and a phase-B port output effective waveforms is determined, and if yes, the turning direction and adjustment amount of the turn button of the encoder are determined according to the effective waveforms, and a control and adjustment circuit implements corresponding adjustment. Thus, waveforms generated by jittering of a vehicle are prevented from interfering the turning and adjustment of the turn button of the encoder, and the vehicle-mounted encoder can realize accurate control and adjustment.
Description
Technical field
The present invention relates to vehicle navigation multimedia product scope, in particular a kind of method and system of vehicle-mounted encoder knob regulating and controlling.
Background technology
Scrambler is the control knob that vehicle navigation multimedia product is conventional, and user regulates volume, wireless channel etc. by the scrambler button on panel.
The scrambler that vehicle navigation multimedia product is conventional belongs to contact mechanical type (incremental), can produce some dither signals in manufacture and use procedure.Shake in manufacture process has: the burr that five metals punching produces; When plastic cement implanted by five metals, lap-joint is uneven and excessive glue etc.Assortedly to consider to be worth doing because contact brush and hardware contact piece and plastic cement friction can produce some in use procedure, these all can cause dither signal, make the waveform of output of products and reference waveform variant.Because the automotive environment of the scrambler work of vehicle-mounted product relatively badly, may export pulse and be more easily disturbed, produce burr than being easier to, such as, when car crosses hole or vibration, the disconnection conducting again of contact brush meeting moment, just produces pulse signal.When scrambler fast rotational, more easily cause the waveform of dither signal, thus after causing user's fast rotational scrambler button, the volume increase of vehicle navigation multimedia product does not reach user's rotate effect, or postpone to increase, even there is by mistake process, cause the result of the constant or step-down of volume.
Therefore, prior art awaits further improvement.
Summary of the invention
In view of above-mentioned weak point of the prior art, the object of the present invention is to provide a kind of method and system of vehicle-mounted encoder knob regulating and controlling, to solve in prior art vehicle-mounted scrambler when running into vibration, the waveform signal of inefficacy may be produced, thus causing encoder knob after rotation, the volume of vehicle navigation multimedia product does not reach the defect of user's needs.
The technical scheme that technical solution problem of the present invention adopts is as follows:
A method for vehicle-mounted encoder knob regulating and controlling, wherein, comprising:
S1, current potential every the first schedule time capturing and coding device circuit A phase port and B phase port, and judge whether collect current potential changes within described first schedule time; If change, then perform step S2; Otherwise repeat this step;
S2, detect described A phase port and whether B phase port exports effective waveform, if effective waveform, then perform step S3, otherwise return step S1;
S3, judge the sense of rotation of encoder knob and the size of regulated quantity according to described effective waveform;
The sense of rotation of encoder knob that S4, basis are judged and the size of regulated quantity, regulating and controlling circuit regulates accordingly;
In described step S2, described effective waveform, in one-period, meets:
When the signal waveform of A phase port leads over the signal waveform of B phase port, the sequence that the potential change of its waveform is corresponding is: { 11,01,00,10}, { 01,00,10,11}, { 00,10,11,01} or { 10,11,01,00}; When the signal waveform of A phase port lags behind the signal waveform of B phase port, the sequence that the potential change of its waveform is corresponding is: { 11,10,00,01}, { 10,00,01,11}, { 00,01,11,10} or { 01,11,10,00}.
The method of described vehicle-mounted encoder knob regulating and controlling, wherein, described step S3 also comprises:
S31, when the signal waveform of A phase port leads over the signal waveform of B phase port, then judge the sense of rotation of encoder knob as rotating forward, otherwise judges sense of rotation as reverse.
The method of described vehicle-mounted encoder knob regulating and controlling, wherein, described step S4 also comprises:
The sense of rotation of scrambler that S41, basis are judged and the size of regulated quantity carry out rotating forward counting or reversion counting;
S42, perform corresponding adjustment according to described rotating forward counting or reversion tally control regulating circuit.
The method of described vehicle-mounted encoder knob regulating and controlling, wherein, described step S4 also comprises:
S43, according to described rotating forward counting or reversion counting, control progress bar vision-control result.
A system for vehicle-mounted encoder knob regulating and controlling, wherein, comprising: the first judge module, detection signal module, the second judge module, and regulating and controlling module;
Described first judge module, for the current potential every the first schedule time capturing and coding device circuit A phase port and B phase port, and judges whether collect current potential changes within described first schedule time;
Whether described detection signal module, export effective waveform for the described A phase port of detection and B phase port;
Described second judge module, for judging the sense of rotation of encoder knob and the size of regulated quantity according to described effective waveform;
Described regulating and controlling module, the sense of rotation of encoder knob judged for basis and the size of regulated quantity, regulating and controlling circuit regulates accordingly;
In described detection signal module, described effective waveform, in one-period, meets:
When the signal waveform of A phase place leads over the signal waveform of B phase place, the sequence that the potential change of its waveform is corresponding is: { 11,01,00,10}, { 01,00,10,11}, { 00,10,11,01} or { 10,11,01,00}; When the signal waveform of A phase place lags behind the signal waveform of B phase place, the sequence that the potential change of its waveform is corresponding is: { 11,10,00,01}, { 10,00,01,11}, { 00,01,11,10} or { 01,11,10,00}.
The system of described vehicle-mounted encoder knob regulating and controlling, wherein, the second judge module comprises walking direction unit;
Described walking direction unit, for when the signal waveform of A phase port leads over the signal waveform of B phase port, then judges that the sense of rotation of encoder knob is as rotating forward, otherwise judges that sense of rotation is as reversion.
The system of described vehicle-mounted encoder knob regulating and controlling, wherein, described regulating and controlling module comprises: counting unit and regulation unit;
Described counting unit, for carrying out rotating forward counting or reversion counting according to the sense of rotation of scrambler judged and the size of regulated quantity;
Described regulation unit, for performing corresponding adjustment according to described rotating forward counting or reversion tally control regulating circuit.
The system of described vehicle-mounted encoder knob regulating and controlling, wherein, described regulating and controlling module also comprises adjustment display unit;
Described adjustment display unit, for according to described rotating forward counting or reversion counting, controls progress bar vision-control result.
Beneficial effect, the method and system of a kind of vehicle-mounted encoder knob regulating and controlling provided by the present invention, by the current potential every the first schedule time capturing and coding device circuit A phase port and B phase port, and judge whether collect current potential changes within described first schedule time; If change, then detect the current potential collected and whether export effective waveform, if effectively waveform, the sense of rotation of encoder knob and the size of regulated quantity is judged according to described effective waveform, regulating and controlling circuit regulates accordingly, thus effectively avoid because the waveform of vehicle shake generation is to the interference caused when being rotated regulated by encoder knob, achieve the object of the accurate regulating and controlling of vehicle-mounted scrambler.
Accompanying drawing explanation
Fig. 1 is the flow chart of steps of the method for vehicle-mounted encoder knob regulating and controlling of the present invention.
Fig. 2 is the schematic diagram of the specific embodiment of the method for vehicle-mounted encoder knob regulating and controlling of the present invention.
Fig. 3 is the concrete steps process flow diagram filtering undesired signal in the method for the invention.
Fig. 4 a is when the effective waveform schematic diagram of A phase leading B phase time in the method for the invention.
Fig. 4 b is when A phase falls behind the effective waveform schematic diagram of B phase time in the method for the invention.
Fig. 5 is the system principle structural drawing that vehicle-mounted scrambler of the present invention rotates regulating and controlling.
Embodiment
For making object of the present invention, technical scheme and advantage clearly, clearly, developing simultaneously referring to accompanying drawing, the present invention is described in more detail for embodiment.Should be appreciated that specific embodiment described herein only for explaining the present invention, being not intended to limit the present invention.
In prior art, the mix mode of signal of the filtration that contact mechanical type (incremental) encoder circuit module is commonly used has two kinds: Hardware Method, adds RC circuit in circuit, filter out undesired signal.Software Method, in a program algorithm for design, filter out undesired signal.Software mode is lower than the cost of Hardware Method, better effects if, and therefore, hardware of the present invention and general vehicle-mounted encoder knob design class seemingly, mainly carry out the effect of optimal design vehicle navigation multimedia product encoder knob from software.
The Software for Design related to of the present invention comprises the driver (BSP) that vehicle navigation multimedia products C PU runs, application software (APP), and the program that single-chip microcomputer runs (MCU).Above-mentioned software how is used to be described in detail knob regulating and controlling to the present invention below.
The method of a kind of vehicle-mounted encoder knob regulating and controlling provided by the present invention, as shown in Figure 1, described method comprises:
S1, current potential every the first schedule time capturing and coding device circuit A phase port and B phase port, and judge whether collect current potential changes within described first schedule time; If change, then perform step S2; Otherwise repeat this step.
In implementation process, carry 2 GPIO pin of navigation multimedia products C PU to be connected with A, B phase port of encoder circuit, driver starts timer, current potential every first schedule time by 2 GPIO pin capturing and coding device circuit A, B phase ports, according to the electric potential signal obtained, CPU judges whether the current potential of A phase port and B phase port in the given time changes, if change, then perform step S2, otherwise continue to carry out timing detection to the current potential of A, B phase port.
S2, detect described A phase port and whether B phase port exports effective waveform, if effective waveform, then perform step S3, otherwise return step S1.
If detect and can collect effective waveform, then judge this effective waveform exported, the signal herein collected is the signal that knob regulates, the undesired signal that non-shake causes, then perform next step, otherwise judge that this signal is as undesired signal, return previous step and continue to detect the current potential of A, B phase port.
In described step S2, described effective waveform, in one-period, meets:
When the signal waveform of A phase port leads over the signal waveform of B phase port, the sequence that the potential change of its waveform is corresponding is: { 11,01,00,10}, { 01,00,10,11}, { 00,10,11,01} or { 10,11,01,00}; When the signal waveform of A phase port lags behind the signal waveform of B phase port, the sequence that the potential change of its waveform is corresponding is: { 11,10,00,01}, { 10,00,01,11}, { 00,01,11,10} or { 01,11,10,00}.
S3, judge the sense of rotation of encoder knob and the size of regulated quantity according to the pulse signal of described effective waveform.
According to the waveform signal that A, B phase port exports, namely the pulse signal of described effective waveform judges the sense of rotation of encoder knob and the size of regulated quantity.
Concrete, according to the current potential of the encoder circuit A phase port collected and B phase port, whether the current potential of A phase port is first changed relative to B phase port current potential in one-period and judges, if, then judge that the sense of rotation of encoder knob is as rotating forward, otherwise judge that sense of rotation is as reversion.
S4, according to the sense of rotation of encoder knob and the size of regulated quantity, regulating and controlling circuit regulates accordingly.
Described step S4 also comprises:
The sense of rotation of scrambler that S41, basis are judged and the size of regulated quantity carry out rotating forward counting or reversion counting;
S42, perform corresponding adjustment according to described rotating forward counting or reversion tally control regulating circuit.
S43, according to described rotating forward counting or reversion counting, control progress bar vision-control result.
Concrete, as described in Figure 2, in specific implementation process, effectively control to realize regulating knob, driver, application software (APP) is adopted in embody rule, and the program that single-chip microcomputer runs (MCU) realizes the function that said method has, it realizes said method and comprises the following steps:
H1, driver monitor effective rotation, send one and detect that message that scrambler effectively rotates is to application software;
If H2 application software current interface does not show the progress bar of volume adjusting, then eject volume adjusting progress bar;
After effective rotation of scrambler being detected in the timer of H3, driver, produce a weaken rock every 20ms, send rotation amount (the little lattice on the corresponding encoder knob) message of the rotating forward (reversion) in (20ms) once during this period of time to application software by SetEventData () and SetEvent ();
H4, application software are by serial communication, and the message in forwarding step H3 is to single-chip microcomputer;
H5, Single Chip Microcomputer (SCM) program parse the rotation data of the rotating forward (reversion) in message, control sound control circuit and carry out corresponding adjustment;
Control circuit in step H5 regulates result to return to application program by H6, single-chip microcomputer;
Up-to-date volume adjusting result in the adjustment progress bar step display H5 of H7, application software.
In above-mentioned steps H1, in order to filter out impact when undesired signal regulates knob rotation, concrete, as shown in Figure 3, it is further comprising the steps of:
H11 a: timer of driver starts;
H12: A, B port current potential of the timer interval 1ms capturing and coding device circuit module in step H11;
H13: judge that the current potential collecting A, B port changes (from high step-down, or uprising from low), if so, then perform step H14, otherwise return step H12;
H14: the current potential according to collecting A, B port obtains waveform;
H15: according to the various combination situation of effective waveform in cycle T shown in Fig. 4 a and Fig. 4 b, judges whether the waveform of A, B port in cycle T meets the effective waveform of scrambler;
If do not meet effective waveform character, then judge it is assorted signal, return step H12, continue the current potential gathering A, B port.If effective waveform, then perform H16;
H16: according to the phase determination of the waveform of A, B port in cycle T, namely in one-period, if the waveform of A point relative B point waveform first changes, 4 kinds of waveform combination as shown in fig. 4 a, are judged to rotate forward; Otherwise, namely in one-period, if changed after the waveform of A point relative B point waveform, 4 kinds of waveform combination as shown in Fig. 4 b, be judged to be reversion;
H17: if step H16 is judged to rotate forward, perform H181; Otherwise, perform H182;
H181: carry out rotating forward counting;
H182: carry out reversion counting.
Under the prerequisite of said method, present invention also offers a kind of system of vehicle-mounted encoder knob regulating and controlling, as shown in Figure 5, comprising: the first judge module 110, detection signal module 120, second judge module 130, and regulating and controlling module 140;
Described first judge module 110, for the current potential every the first schedule time capturing and coding device circuit A phase port and B phase port, and judges whether collect current potential changes within described first schedule time;
Whether described detection signal module 120, export effective waveform for the described A phase port of detection and B phase port;
Described second judge module 130, for judging the sense of rotation of encoder knob and the size of regulated quantity according to described effective waveform;
Described regulating and controlling module 140, the sense of rotation of encoder knob judged for basis and the size of regulated quantity, regulating and controlling circuit regulates accordingly;
In described detection signal module, described effective waveform, in one-period, meets:
When the signal waveform of A phase port leads over the signal waveform of B phase port, the sequence that the potential change of its waveform is corresponding is: { 11,01,00,10}, { 01,00,10,11}, { 00,10,11,01} or { 10,11,01,00}; When the signal waveform of A phase port lags behind the signal waveform of B phase port, the sequence that the potential change of its waveform is corresponding is: { 11,10,00,01}, { 10,00,01,11}, { 00,01,11,10} or { 01,11,10,00}.
Second judge module comprises walking direction unit;
Described walking direction unit, for when the signal waveform of A phase port leads over the signal waveform of B phase port, then judges that the sense of rotation of encoder knob is as rotating forward, otherwise judges that sense of rotation is as reversion.
Described regulating and controlling module comprises: counting unit and regulation unit;
Described counting unit, for carrying out rotating forward counting or reversion counting according to the sense of rotation of scrambler judged and the size of regulated quantity;
Described regulation unit, for performing corresponding adjustment according to described rotating forward counting or reversion tally control regulating circuit.
Described regulating and controlling module also comprises adjustment display unit;
Described adjustment display unit, for according to described rotating forward counting or reversion counting, controls progress bar vision-control result.
Described method and system of the present invention, due to the mode adopting software to filter assorted signal, therefore cost is low, and determines whether that the algorithm effectively rotated thoroughly eliminates the interference of assorted signal by the output potential waveform in encoder cycle; Interval 20ms sends message that a direction determining and rotation amount count to application software, and be transmitted to Single-chip Controlling sound (or other) control circuit and regulate, the adjustment progress bar of application program shows up-to-date adjustment result, real-time is high, can achieve the effect that improve vehicle-mounted scrambler regulating and controlling accuracy and practicality.
The method and system of a kind of vehicle-mounted encoder knob regulating and controlling provided by the present invention, by the current potential every the first schedule time capturing and coding device circuit A phase port and B phase port, and judge whether collect current potential changes within described first schedule time; If change, then detect described A phase port and whether B phase port exports effective waveform, if effectively waveform, the sense of rotation of encoder knob and the size of regulated quantity is judged according to described effective waveform, regulating and controlling circuit regulates accordingly, thus effectively avoid because the waveform of vehicle shake generation is to the interference caused when being rotated regulated by encoder knob, achieve the object of the accurate regulating and controlling of vehicle-mounted scrambler.
Be understandable that, for those of ordinary skills, can be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, and all these change or replace the protection domain that all should belong to the claim appended by the present invention.
Claims (8)
1. a method for vehicle-mounted encoder knob regulating and controlling, is characterized in that, comprising:
S1, current potential every the first schedule time capturing and coding device circuit A phase port and B phase port, and judge whether the current potential collected changes within described first schedule time; If change, then perform step S2; Otherwise repeat this step;
S2, detect described A phase port and whether B phase port exports effective waveform, if effective waveform, then perform step S3, otherwise return step S1;
S3, judge the sense of rotation of encoder knob and the size of regulated quantity according to described effective waveform;
S4, according to the sense of rotation of encoder knob and the size of regulated quantity, regulating and controlling circuit regulates accordingly;
In described step S2, described effective waveform, in one-period, meets:
When the signal waveform of A phase port leads over the signal waveform of B phase port, the sequence that the potential change of its waveform is corresponding is: { 11,01,00,10}, { 01,00,10,11}, { 00,10,11,01} or { 10,11,01,00}; When the signal waveform of A phase port lags behind the signal waveform of B phase port, the sequence that the potential change of its waveform is corresponding is: { 11,10,00,01}, { 10,00,01,11}, { 00,01,11,10} or { 01,11,10,00}.
2. the method for vehicle-mounted encoder knob regulating and controlling according to claim 1, it is characterized in that, described step S3 also comprises:
S31, lead over the signal waveform of B phase port when the signal waveform of A phase port, then judge that the sense of rotation of encoder knob is as rotating forward, otherwise judges that sense of rotation is as reversing.
3. the method for vehicle-mounted encoder knob regulating and controlling according to claim 2, it is characterized in that, described step S4 also comprises:
The sense of rotation of scrambler that S41, basis are judged and the size of regulated quantity carry out rotating forward counting or reversion counting;
S42, perform corresponding adjustment according to described rotating forward counting or reversion tally control regulating circuit.
4. the method for vehicle-mounted encoder knob regulating and controlling according to claim 3, it is characterized in that, described step S4 also comprises:
S43, according to described rotating forward counting or reversion counting, control progress bar vision-control result.
5. a system for vehicle-mounted encoder knob regulating and controlling, is characterized in that, comprising: the first judge module, detection signal module, the second judge module, and regulating and controlling module;
Described first judge module, for the current potential every the first schedule time capturing and coding device circuit A phase port and B phase port, and judges whether collect current potential changes within described first schedule time;
Described detection signal module, for detecting described A phase port and whether B phase port exports effective waveform;
Described second judge module, for judging the sense of rotation of encoder knob and the size of regulated quantity according to described effective waveform;
Described regulating and controlling module, the sense of rotation of encoder knob judged for basis and the size of regulated quantity, regulating and controlling circuit regulates accordingly;
In described detection signal module, described effective waveform, in one-period, meets:
When the signal waveform of A phase place leads over the signal waveform of B phase place, the sequence that the potential change of its waveform is corresponding is: { 11,01,00,10}, { 01,00,10,11}, { 00,10,11,01} or { 10,11,01,00}; When the signal waveform of A phase place lags behind the signal waveform of B phase place, the sequence that the potential change of its waveform is corresponding is: { 11,10,00,01}, { 10,00,01,11}, { 00,01,11,10} or { 01,11,10,00}.
6. the system of vehicle-mounted encoder knob regulating and controlling according to claim 5, it is characterized in that, the second judge module comprises walking direction unit;
Described walking direction unit, for when the signal waveform of A phase port leads over the signal waveform of B phase port, then judges that the sense of rotation of encoder knob is as rotating forward, otherwise judges that sense of rotation is as reversion.
7. the system of vehicle-mounted encoder knob regulating and controlling according to claim 6, it is characterized in that, described regulating and controlling module comprises: counting unit and regulation unit;
Described counting unit, for carrying out rotating forward counting or reversion counting according to the sense of rotation of scrambler judged and the size of regulated quantity;
Described regulation unit, for performing corresponding adjustment according to described rotating forward counting or reversion tally control regulating circuit.
8. the system of vehicle-mounted encoder knob regulating and controlling according to claim 7, it is characterized in that, described regulating and controlling module also comprises adjustment display unit;
Described adjustment display unit, for according to described rotating forward counting or reversion counting, controls progress bar vision-control result.
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| CN107290991A (en) * | 2017-05-27 | 2017-10-24 | 温州长江汽车电子有限公司 | Encoder knob control method and equipment based on Vehicle Controller |
| CN109445329A (en) * | 2018-10-22 | 2019-03-08 | 四川虹美智能科技有限公司 | A kind of refrigerator functions selection system and method |
| CN112504316A (en) * | 2019-09-16 | 2021-03-16 | 西安诺瓦星云科技股份有限公司 | Rotary encoder detection method, device and system |
| CN110967538A (en) * | 2020-02-28 | 2020-04-07 | 深圳市鼎阳科技股份有限公司 | Knob acceleration method and control and adjustment method of oscilloscope and digital oscilloscope |
| CN110967538B (en) * | 2020-02-28 | 2020-06-09 | 深圳市鼎阳科技股份有限公司 | Knob acceleration method and control and adjustment method of oscilloscope and digital oscilloscope |
| CN112596693A (en) * | 2020-12-10 | 2021-04-02 | 惠州市德赛西威汽车电子股份有限公司 | Method for removing jitter of knob type volume encoder and storage medium |
| CN117031990A (en) * | 2023-08-02 | 2023-11-10 | 大拓(山东)物联网科技有限公司 | Household appliance control method, device, equipment and storage medium based on knob screen |
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