CN102945596A - Signal reception method of remote controller - Google Patents
Signal reception method of remote controller Download PDFInfo
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- CN102945596A CN102945596A CN2012104263539A CN201210426353A CN102945596A CN 102945596 A CN102945596 A CN 102945596A CN 2012104263539 A CN2012104263539 A CN 2012104263539A CN 201210426353 A CN201210426353 A CN 201210426353A CN 102945596 A CN102945596 A CN 102945596A
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Abstract
The invention relates to a technology of remote control. The invention, solving the problem of low reliability of signal reception of existing air conditioner remote controller, provides a signal reception method of a remote controller, characterized in that: by applying a timer called timer 0 and determining the received pulse width time, the signal reception of the remote controller can effectively process and isolate interference signals. According to the invention, the reception efficiency and reliability of the remote controller signals are raised, and the method disclosed herein is suitable for the reception of the remote controller signals.
Description
Technical field
The present invention relates to telecontrol engineering, particularly the technology of air-conditioning remote control signal reception.
Background technology
At present, air conditioner generally receives remote controller signal and push button signalling by the indoor set processor, by decoding, control indoor horizontal wind direction, vertically-supplying air to, indoor electric heating, the operation of indoor fan motor and the sampling of indoor temperature, the indoor set processor is also controlled the demonstration of LED light or digitron display screen, simultaneously, the indoor set processor passes through the UART asynchronous communication with off-premises station processor carrying out shake communication, telepilot or key controlling command and control parameter etc. are delivered to off-premises station, operational factor with off-premises station is delivered to indoor set simultaneously, indoor set and off-premises station are controlled and shown by regulating further by indoor set, the off-premises station processor receives order from indoor set by the UART asynchronous communication, to outdoor compressor, four-way valve, outdoor fans etc. are controlled, and control the sampling that outdoor each temperature sensor is carried out.At present, the collection of air-conditioning remote control input signal receives, general time corresponding to mode ranging pulse width of adopting external interrupt (among external interrupt INT0～INTn some) and timer to combine receives remote controller signal, when the telepilot input signal is arranged, the rising edge or the negative edge that just have signal at processor external interrupt interface occur, this moment is by the timing of timer, just can obtain the time interval between twice input signal negative edge or the twice input signal rising edge, obtain pulse width time, again pulse width time is compared with the signal of telepilot emission, obtain digital " 0 " and the numeral " 1 " of input remote controller signal, obtain at last the array of telepilot input signal, obtain the telepilot control signal by decoding again.But because the circumstance complication of air conditioner operation, undesired signal frequently occurs, and temperature, humidity and other electromagnetic interference (EMI) all can affect the performance of electron device, particularly transducer air conditioning is when operation, because the operation that outdoor IPM controls compressor by frequent shutoff and the conducting of six road upper and lower bridge arm switching devices, a large amount of undesired signals certainly will will be caused, if undesired signal is not effectively processed, certainly will disturb the reception of remote controller signal, the serious problems such as malfunctioning that cause particularly that remote controller signal receives.Air-conditioning 0.1 degree accurate temperature controlling remote controller signal, comprise that the pulse width time that is comprised of high level and low level simultaneously is approximately a preamble code of 13 milliseconds, constituting of numeral " 1 " of 1 millisecond digital " 0 " and 2 milliseconds, whole frame remote controller signal longer duration, the signal message amount is large especially, fraction part and the integral part of the existing design temperature of information that every frame remote controller signal comprises, the air quantity that also has blower fan, pattern and/or airdoor control information, and the information such as timed power on/off time, special requirement guarantee efficient and reliable to the reception of remote controller signal.But in the present air conditioner remote controller signal method of reseptance, the integrity problem that all remote controller signal is not received is processed, and causes present air conditioner remote controller signal reception reliability not high.
Summary of the invention
The objective of the invention is to overcome the not high shortcoming of present air conditioner remote controller signal reception reliability, a kind of remote signal method of reseptance is provided.
The present invention solves its technical matters, and the technical scheme of employing is that the remote signal method of reseptance is characterized in that, may further comprise the steps:
Step 1, default some external interrupt INTx trigger exterior I NTx interruption at negative edge or rising edge, and x is natural number;
The exterior I NTx that step 2, wait telepilot input signal cause interrupts occuring;
If step 3 exterior I NTx interrupts occuring, processor is carried out interrupt service routine, judges whether the value of register step is 0, does not enter step 5 if be not 0, if 0 enters step 4;
Step 4, timer timer0 timing is set, starts timer timer0 and begin counting, simultaneously register step value is set to 1, withdraw from interrupt service routine, get back to step 2;
Step 5, the current counter time value that reads timer timer0 are put into the second register, calculate timer timer0 since last time regularly to time that current counter time value experiences, draw twice pulse width time between the exterior I NTx interruption and put into the 3rd register T0, again set the timing of timer timer0, restart timer timer0 and begin counting;
Step 6, judge whether the value of register step is 1, if 1 enters step 7, does not enter step 8 if be not 1;
Step 7, judge according to the value of the 3rd register T0 whether input signal is effective preamble code, if then register step value is set to 2, withdraws from interrupt service routine, gets back to step 2, enters step 13 if not then be judged to be undesired signal;
Step 8, judge according to the value of the 3rd register T0 whether input signal is serial digital signal " 0 " or " 1 ", if serial digital signal " 0 " or " 1 " then shifting processing are to store reception buffer zone into behind the byte byte of 8bit, and enter step 9, if do not enter step 13 for serial digital signal " 0 " or " 1 " then are judged to be undesired signal;
Step 9, judge whether that all bytes all finish receiving, if then enter step 10, if not then withdraw from interrupt service routine, get back to step 2;
The effect of the data that step 10, judgement receive and whether correct if then enter step 11, enters step 13 if not then be judged to be undesired signal;
Step 11, setting receive the remote controller signal sign, the decoding of wait decoding program, this remote controller signal finishes receiving, register step value is set to 0, initialization the second register and the 3rd register T0, initialization external interrupt INTx and timer timer0 stop timer timer0, get back to step 2 and wait for that receive next time;
In step 12, the whole timer timer0 operational process, if timer timer0 count value surpasses timing, what then think reception is that undesired signal directly enters step 13;
The information data that step 13, deletion have received, this remote controller signal finishes receiving, and register step value is set to 0, initialization the second register and the 3rd register T0, initialization external interrupt INTx and timer timer0 stop timer timer0, get back to step 2 and wait for that receive next time.
Further, described timing is 15 milliseconds.
Concrete, in the step 7, described value according to the 3rd register T0 judges that whether input signal is that the method for effective preamble code is: when the value of the 3rd register T0 is in the certain error range of preamble code standard time width, is judged to be effective preamble code, otherwise is judged to be invalid preamble code.
Further, described preamble code standard time width is designated as T1, and then the certain error range of preamble code standard time width refers to [T1 * (1-n0%), T1 * (1+n0%)], and wherein, n0 is positive number.
Concrete, the span of described n0 is 10 to 30.
Further, in the step 8, described value according to the 3rd register T0 judges that whether input signal is that the method for serial digital signal " 0 " or " 1 " is: when the value of the 3rd register T0 is in the certain error range of the standard time width of serial digital signal " 0 ", be judged to be serial digital signal " 0 ", when the value of the 3rd register T0 is in the certain error range of the standard time width of serial digital signal " 1 ", be judged to be serial digital signal " 1 ", other situations are judged to be invalid preamble code.
Concrete, the standard time width of described serial digital signal " 0 " is designated as T2, and then the certain error range of standard time width of serial digital signal " 0 " refers to [T2 * (1-n1%), T2 * (1+n1%)], and wherein, n1 is positive number.
Further, the span of described n1 is 10 to 30.
Concrete, the standard time width of described serial digital signal " 1 " is designated as T3, and then the certain error range of standard time width of serial digital signal " 1 " refers to [T3 * (1-n2%), T3 * (1+n2%)], and wherein, n2 is positive number.
Further, the span of described n2 is 10 to 30.
The invention has the beneficial effects as follows, by above-mentioned remote signal method of reseptance, the pulse width time that application and judgement by timer timer0 receives not only can reliable reception air-conditioning 0.1 degree accurate temperature controlling remote controller signal, and can also effectively process and isolate undesired signal.
Embodiment
Below in conjunction with embodiment, describe technical scheme of the present invention in detail.
Remote signal method of reseptance of the present invention is: at first default some external interrupt INTx trigger exterior I NTx interruption at negative edge or rising edge, x is that natural number (namely refers to select some external interrupt INTx as the external interrupt that triggers external interrupt, the value of x is relevant with the quantity that this equipment peripheral interrupts), then wait for that the exterior I NTx that the telepilot input signal causes interrupts occuring, if exterior I NTx interrupts occuring, processor is carried out interrupt service routine, whether the value of judging register step is 0, if 0 arranges timer timer0 timing, start timer timer0 and begin counting, simultaneously register step value is set to 1, withdraw from interrupt service routine, get back to and wait for that the exterior I NTx that the telepilot input signal causes interrupts occuring that step, if be not that 0 current counter time value that reads timer timer0 is put into the second register, calculate timer timer0 since last time regularly to time that current counter time value experiences, draw twice pulse width time between the exterior I NTx interruption and put into the 3rd register T0, again set the timing of timer timer0, restart timer timer0 and begin counting, whether the value of then judging register step is 1, if 1 value according to the 3rd register T0 judges whether input signal is effective preamble code, if then register step value is set to 2, withdraw from interrupt service routine, get back to and wait for that the exterior I NTx that the telepilot input signal causes interrupts occuring that step, if not then be judged to be the information data that the undesired signal deletion has received, this remote controller signal finishes receiving, register step value is set to 0, initialization the second register and the 3rd register T0, initialization external interrupt INTx and timer timer0, stop timer timer0, get back to and wait for that step wait reception next time occurs in the exterior I NTx interruption that the telepilot input signal causes, if be not that 1 value according to the 3rd register T0 judges whether input signal is serial digital signal " 0 " or " 1 ", if be not that serial digital signal " 0 " or " 1 " then are judged to be the information data that the undesired signal deletion has received, this remote controller signal finishes receiving, register step value is set to 0, initialization the second register and the 3rd register T0, initialization external interrupt INTx and timer timer0, stop timer timer0, get back to and wait for that step wait reception next time occurs in the exterior I NTx interruption that the telepilot input signal causes, if serial digital signal " 0 " or " 1 " then shifting processing are to store reception buffer zone into behind the byte byte of 8bit, and judge whether that all bytes all finish receiving, if not then withdraw from interrupt service routine, get back to and wait for that step wait reception next time occurs in the exterior I NTx interruption that the telepilot input signal causes, if then judge the effect of the data receive and whether correct, if not then be judged to be the information data that the undesired signal deletion has received, this remote controller signal finishes receiving, register step value is set to 0, initialization the second register and the 3rd register T0, initialization external interrupt INTx and timer timer0, stop timer timer0, get back to and wait for that step wait reception next time occurs in the exterior I NTx interruption that the telepilot input signal causes, if then arrange and receive the remote controller signal sign, the decoding of wait decoding program, this remote controller signal finishes receiving, register step value is set to 0, initialization the second register and the 3rd register T0, initialization external interrupt INTx and timer timer0, stop timer timer0, get back to step 2 and wait for that receive next time; In addition, in whole timer timer0 operational process, if timer timer0 count value surpasses timing, what then think reception is the information data that the direct deletion of undesired signal has received, this remote controller signal finishes receiving, register step value is set to 0, initialization the second register and the 3rd register T0, initialization external interrupt INTx and timer timer0, stop timer timer0, get back to and wait for that step wait reception next time occurs in the exterior I NTx interruption that the telepilot input signal causes.
Embodiment
In this routine remote signal method of reseptance, because the preamble code pulse width time of air-conditioning 0.1 degree accurate temperature controlling remote controller signal is about 13 milliseconds, so timer timer0 timing can adopt 15 milliseconds, and concrete method is:
Step 1, default some external interrupt INTx trigger exterior I NTx interruption at negative edge or rising edge, and x is natural number (namely referring to select some external interrupt INTx as the external interrupt that triggers external interrupt);
The exterior I NTx that step 2, wait telepilot input signal cause interrupts occuring;
If step 3 exterior I NTx interrupts occuring, processor is carried out interrupt service routine, judges whether the value of register step is 0, does not enter step 5 if be not 0, if 0 enters step 4;
Step 4, timer timer0 timing is set is 15 milliseconds, starts timer timer0 and begins counting, simultaneously register step value is set to 1, withdraws from interrupt service routine, gets back to step 2;
Step 5, the current counter time value that reads timer timer0 are put into the second register, calculate timer timer0 since last time regularly to time that current counter time value experiences, draw twice pulse width time between the exterior I NTx interruption and put into the 3rd register T0, the timing of again setting timer timer0 is 15 milliseconds, restarts timer timer0 and begins counting;
Step 6, judge whether the value of register step is 1, if 1 enters step 7, does not enter step 8 if be not 1;
Step 7, judge according to the value of the 3rd register T0 whether input signal is effective preamble code, if then register step value is set to 2, withdraws from interrupt service routine, gets back to step 2, enters step 13 if not then be judged to be undesired signal;
Here, judge that according to the value of the 3rd register T0 whether input signal is that the method for effective preamble code is: when the value of the 3rd register T0 is in the certain error range of preamble code standard time width, be judged to be effective preamble code, otherwise be judged to be invalid preamble code, if preamble code standard time width is designated as T1, then the certain error range of preamble code standard time width refers to [T1 * (1-n0%), T1 * (1+n0%)], wherein, n0 is positive number, should choose according to the condition of code of remote control signal pulse width, general span is 10 to 30.
Step 8, judge according to the value of the 3rd register T0 whether input signal is serial digital signal " 0 " or " 1 ", if serial digital signal " 0 " or " 1 " then shifting processing are to store reception buffer zone into behind the byte byte of 8bit, and enter step 9, if do not enter step 13 for serial digital signal " 0 " or " 1 " then are judged to be undesired signal;
Here, judge that according to the value of the 3rd register T0 whether input signal is that the method for serial digital signal " 0 " or " 1 " is: when the value of the 3rd register T0 is in the certain error range of the standard time width of serial digital signal " 0 ", be judged to be serial digital signal " 0 ", when the value of the 3rd register T0 is in the certain error range of the standard time width of serial digital signal " 1 ", be judged to be serial digital signal " 1 ", other situations are judged to be invalid preamble code, if the standard time width of serial digital signal " 0 " is designated as T2, then the certain error range of standard time width of serial digital signal " 0 " refers to [T2 * (1n1%), T2 * (1+n1%)], the standard time width of serial digital signal " 1 " is designated as T3, then the certain error range of standard time width of serial digital signal " 1 " refers to [T3 * (1-n2%), T3 * (1+n2%)], wherein, n1 and n2 are positive number, should choose according to the condition of code of remote control signal pulse width, general span all is 10 to 30.
Step 9, judge whether that all bytes all finish receiving, if then enter step 10, if not then withdraw from interrupt service routine, get back to step 2;
The effect of the data that step 10, judgement receive and whether correct if then enter step 11, enters step 13 if not then be judged to be undesired signal;
Step 11, setting receive the remote controller signal sign, the decoding of wait decoding program, this remote controller signal finishes receiving, register step value is set to 0, initialization the second register and the 3rd register T0, initialization external interrupt INTx and timer timer0 stop timer timer0, get back to step 2 and wait for that receive next time;
In step 12, the whole timer timer0 operational process, if timer timer0 count value surpasses 15 milliseconds of timings, what then think reception is that undesired signal directly enters step 13;
The information data that step 13, deletion have received, this remote controller signal finishes receiving, and register step value is set to 0, initialization the second register and the 3rd register T0, initialization external interrupt INTx and timer timer0 stop timer timer0, get back to step 2 and wait for that receive next time.
Claims (10)
1. the remote signal method of reseptance is characterized in that, may further comprise the steps:
Step 1, default some external interrupt INTx trigger exterior I NTx interruption at negative edge or rising edge, and x is natural number;
The exterior I NTx that step 2, wait telepilot input signal cause interrupts occuring;
If step 3 exterior I NTx interrupts occuring, processor is carried out interrupt service routine, judges whether the value of register step is 0, does not enter step 5 if be not 0, if 0 enters step 4;
Step 4, timer timer0 timing is set, starts timer timer0 and begin counting, simultaneously register step value is set to 1, withdraw from interrupt service routine, get back to step 2;
Step 5, the current counter time value that reads timer timer0 are put into the second register, calculate timer timer0 since last time regularly to time that current counter time value experiences, draw twice pulse width time between the exterior I NTx interruption and put into the 3rd register T0, again set the timing of timer timer0, restart timer timer0 and begin counting;
Step 6, judge whether the value of register step is 1, if 1 enters step 7, does not enter step 8 if be not 1;
Step 7, judge according to the value of the 3rd register T0 whether input signal is effective preamble code, if then register step value is set to 2, withdraws from interrupt service routine, gets back to step 2, enters step 13 if not then be judged to be undesired signal;
Step 8, judge according to the value of the 3rd register T0 whether input signal is serial digital signal " 0 " or " 1 ", if serial digital signal " 0 " or " 1 " then shifting processing are to store reception buffer zone into behind the byte byte of 8bit, and enter step 9, if do not enter step 13 for serial digital signal " 0 " or " 1 " then are judged to be undesired signal;
Step 9, judge whether that all bytes all finish receiving, if then enter step 10, if not then withdraw from interrupt service routine, get back to step 2;
The effect of the data that step 10, judgement receive and whether correct if then enter step 11, enters step 13 if not then be judged to be undesired signal;
Step 11, setting receive the remote controller signal sign, the decoding of wait decoding program, this remote controller signal finishes receiving, register step value is set to 0, initialization the second register and the 3rd register T0, initialization external interrupt INTx and timer timer0 stop timer timer0, get back to step 2 and wait for that receive next time;
In step 12, the whole timer timer0 operational process, if timer timer0 count value surpasses timing, what then think reception is that undesired signal directly enters step 13;
The information data that step 13, deletion have received, this remote controller signal finishes receiving, and register step value is set to 0, initialization the second register and the 3rd register T0, initialization external interrupt INTx and timer timer0 stop timer timer0, get back to step 2 and wait for that receive next time.
2. described remote signal method of reseptance according to claim 1 is characterized in that, described timing is 15 milliseconds.
3. described remote signal method of reseptance according to claim 1, it is characterized in that, in the step 7, described value according to the 3rd register T0 judges that whether input signal is that the method for effective preamble code is: when the value of the 3rd register T0 is in the certain error range of preamble code standard time width, be judged to be effective preamble code, otherwise be judged to be invalid preamble code.
4. described remote signal method of reseptance according to claim 3 is characterized in that, described preamble code standard time width is designated as T1, and then the certain error range of preamble code standard time width refers to [T1 * (1-n0%), T1 * (1+n0%)], and wherein, n0 is positive number.
5. described remote signal method of reseptance according to claim 4 is characterized in that, the span of described n0 is 10 to 30.
6. according to claim 1 and 2 or 3 or 4 or 5 described remote signal method of reseptances, it is characterized in that, in the step 8, described value according to the 3rd register T0 judges that whether input signal is that the method for serial digital signal " 0 " or " 1 " is: when the value of the 3rd register T0 is in the certain error range of the standard time width of serial digital signal " 0 ", be judged to be serial digital signal " 0 ", when the value of the 3rd register T0 is in the certain error range of the standard time width of serial digital signal " 1 ", be judged to be serial digital signal " 1 ", other situations are judged to be invalid preamble code.
7. described remote signal method of reseptance according to claim 6, it is characterized in that, the standard time width of described serial digital signal " 0 " is designated as T2, then the certain error range of standard time width of serial digital signal " 0 " refers to [T2 * (1-n1%), T2 * (1+n1%)], wherein, n1 is positive number.
8. described remote signal method of reseptance according to claim 7 is characterized in that, the span of described n1 is 10 to 30.
9. described remote signal method of reseptance according to claim 6, it is characterized in that, the standard time width of described serial digital signal " 1 " is designated as T3, then the certain error range of standard time width of serial digital signal " 1 " refers to [T3 * (1-n2%), T3 * (1+n2%)], wherein, n2 is positive number.
10. described remote signal method of reseptance according to claim 9 is characterized in that, the span of described n2 is 10 to 30.
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| CN104299402A (en) * | 2014-08-15 | 2015-01-21 | 恬家（上海）信息科技有限公司 | Infrared learning method using AD mode |
| CN106448129A (en) * | 2016-10-26 | 2017-02-22 | 青岛海信电器股份有限公司 | Method and device for removing interference pulse in infrared remote control data |
| CN111768609A (en) * | 2020-06-29 | 2020-10-13 | 珠海格力电器股份有限公司 | Infrared signal processing method and device |
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