CN104090513B - A kind of new pulse signal detection method - Google Patents
A kind of new pulse signal detection method Download PDFInfo
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- CN104090513B CN104090513B CN201410335456.3A CN201410335456A CN104090513B CN 104090513 B CN104090513 B CN 104090513B CN 201410335456 A CN201410335456 A CN 201410335456A CN 104090513 B CN104090513 B CN 104090513B
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Abstract
The present invention relates to washing machine field, specifically a kind of new pulse signal detection method, its step includes,（1）Preset collection period T1, calculating cycle T2 and constant C numerical value；（2）Then judge in whether the T1 times have timing, if so, performing（3）；No, repeat（2）；（3）Add up high level and low level number in the T1 times, is designated as Thigh, Tlow respectively, until counting down to the predetermined T2 times；（4）Thigh, Tlow are substituted into formula F, obtain a result r, wherein formula F is as follows：R=| Thigh Tlow |, and r is determined whether into pulse signal more afterwards compared with the default constant C of program；（5）After having judged pulse signal, marker position, return to step are updated（2）.The present invention can be eliminated all because power network fluctuation and the caused false alarm phenomenon without effective grounding, extend the washing machine life-span.
Description
Technical field
The present invention relates to washing machine field, and in particular to a kind of new pulse signal detection method of roller washing machine.
Background technology
At present, roller washing machine market is constantly expanding, and rural market therein has been developed as roller washing machine city
The important part in field.Known, the rural area in China or the power network of remote mountain areas are extremely unstable, voltage and frequency fluctuation model
Enclose very greatly, and the power network in many places all lacks effective grounding.Unstable and without dead ground the situation of power network
Very big influence be present to the normal use of roller washing machine, the detection especially to roller washing machine pulse signal produces very big
Influence, or even the phenomenon that false alarm occurs because of pulse signal detection mistake occurs, eventually results in the mistake of user of service
Operation, it is impossible to carry out normal washing work, reduce the service life of washing machine.
The content of the invention
The purpose of the present invention is to be directed to the deficiency of existing signal detecting method in background technology, it is proposed that a kind of improvement side
Case, specifically a kind of new pulse signal detection method, this method are based on the basis of current roller washing machine configuration
, it can correctly detect pulse signal.
In order to solve described technical problem, the technical solution adopted by the present invention is：A kind of new pulse signal detection
Method, it is characterised in that this method comprises the following steps,（1）The pre-set collection first in the program of roller washing machine
The numerical value of cycle T 1, calculating cycle T2 and constant C these three parameters；（2）Then roller washing machine, normal operation journey are started
Sequence, after the collection period T1 times of setting are run to, if program timing is interrupted, carry out next step（3）Operation, if journey
Sequence does not have Interruption, then continues repeat step（2）Operation, until next step can be run（3）Operation；（3）Laundry
The MCU of machine is scanned with T1 periodic pulse signal, in scanning process, constantly reads the level of pulse signal, and constantly
Cumulative high level and low level number, number are designated as Thigh, Tlow respectively, after predetermined calculating cycle T2 is count down to, then
Carry out next step（4）Operation, if just stopped counting after predetermined calculating cycle T2 is not reaching to, return repeat walk
Suddenly（2）Operation, until can be with operating procedure（3）, step（4）；（4）By the high level recorded within the calculating cycle T2 times
Number Thigh, low level number Tlow substitute into formula F, obtain a result r, and wherein formula F is as follows：r= |Thigh - Tlow
|, and by r compared with the default constant C of program, if r<C, then judge it is not after pulse is believed, flag bit to be zeroed out, return is held
Row step（2）If r >=C, pulse signal is confirmed as, order performs next step（5）；（5）It is right after having judged pulse signal
Flag bit carries out set, again returns to step（2）Carry out the detection of next round pulse signal.
Preferably：Described constant C scope is 29≤C≤31, i.e. constant C can use 29,30,31 3 numerical value.
The beneficial effects of the invention are as follows：Pass through the detection method proposed by the present invention to existing roller washing machine pulse signal
Improvement, fully ensured that washing machine can be normal in the case of line voltage, the larger and no dead ground of frequency fluctuation
Operation, be not in the phenomenon of false alarm, can all eliminate because of the unstable erroneous procedures the brought operation of power network, extend
The service life of washing machine, it ensure that user correctly operates.
Brief description of the drawings
Fig. 1, flow chart of the method for the present invention.
Embodiment
Flow chart in below in conjunction with the accompanying drawings, the embodiment of the present invention is described in further detail.
As shown in figure 1, being flow chart of the method for the present invention, this method comprises the following steps that：It is step first（1）,
Pre-set collection period T1 in the program of roller washing machine, calculating cycle T2 and constant C these three parameters numerical value；So
After be step（2）, and then start roller washing machine, normal operation program, after the collection period T1 times of setting are run to,
If program timing is interrupted, next step is carried out（3）Operation, if program does not have Interruption, continue repeat step（2）'s
Operation, until next step can be run（3）Operation；Step（3）The MCU of washing machine is swept with T1 periodic pulse signal
Retouch, in scanning process, constantly read the level of pulse signal, and constantly cumulative high level and low level number, number point
Thigh, Tlow are not designated as, after predetermined calculating cycle T2 is count down to, then carries out next step（4）Operation, if not having
Counting is just stopped after reaching predetermined calculating cycle T2, then returns to repeat step（2）Operation, until can be with operating procedure
（3）, step（4）；Step（4）, by the high level number Thigh recorded within the calculating cycle T2 times, low level number Tlow
Formula F is substituted into, obtains a result r, wherein formula F is as follows：R=| Thigh-Tlow |, and by r and the default constant of program
C compares, if r<C, then judge it is not that after pulse is believed, flag bit is zeroed out, return and perform step（2）If r >=C, confirm
For pulse signal, order performs next step（5）；（5）After having judged pulse signal, set is carried out to flag bit, again returned to
Step（2）Carry out the detection of next round pulse signal.
Embodiment one：Collection period T1=1ms set in advance, calculating cycle T2=100ms in the present embodiment, and constant
C=29, the detection of line-pulse signal is entered according to above-mentioned method flow, the high level number recorded within the calculating cycle T2 times
Thigh=18, low level number Tlow=13, by Thigh=18, Tlow=13 substitute into formula r=| Thigh-Tlow |, draw
R=5, r ＜ C, then it is judged as it not being pulse signal.
Embodiment two：Collection period T1=1ms set in advance, calculating cycle T2=120ms in the present embodiment, and constant
C=30, the detection of line-pulse signal is entered according to above-mentioned method flow, the high level number recorded within the calculating cycle T2 times
Thigh=180, low level number Tlow=150, by Thigh=180, Tlow=150 substitute into formula r=| Thigh-Tlow |,
R=30 is drawn, r=C, is then judged as pulse signal.
Embodiment three：Collection period T1=1ms set in advance, calculating cycle T2=200ms in the present embodiment, and constant
C=31, the detection of line-pulse signal is entered according to above-mentioned method flow, the high level number recorded within the calculating cycle T2 times
Thigh=280, low level number Tlow=200, by Thigh=280, Tlow=200 substitute into formula r=| Thigh-Tlow |,
R=80 is drawn, r ＞ C, is then judged as pulse signal.
A kind of detection method of new pulse signal proposed by the present invention is the improvement to existing detection method, is improved
Method afterwards can ensure that washing machine can be transported normally in the case of line voltage, the larger and no dead ground of frequency fluctuation
OK, be not in the phenomenon of false alarm, can all eliminate because of the unstable erroneous procedures the brought operation of power network, extend and wash
The service life of clothing machine so that user's safe operation.
Claims (2)
- A kind of 1. new pulse signal detection method, it is characterised in that this method comprises the following steps：Step（1）, start roller washing machine, and pre-set collection period T1, meter in the program of roller washing machine first Calculate the numerical value of these three parameters of cycle T 2 and constant C；Step（2）, then this detection of normal operation program, when this detection program runs to the collection period T1 times of setting, if Program timing is interrupted, then carries out next step（3）Operation, if program does not have Interruption, continue repeat step（2）Behaviour Make, until next step can be run（3）Operation；Step（3）, the MCU of washing machine is scanned using T1 as collection period to signal, in scanning process, constantly reads signal Level, and constantly cumulative high level and low level number, number are designated as Thigh, Tlow respectively, when reaching predetermined calculating After the time of cycle T 2, then next step is carried out（4）Operation, if just stopped meter after predetermined calculating cycle T2 is not reaching to Number, then return to repeat step（2）Operation, until can be with operating procedure（3）, step（4）；Step（4）, the high level number Thigh recorded in calculating cycle T2, low level number Tlow are substituted into formula F, obtained Take a result r, wherein formula F is as follows：R=| Thigh-Tlow |, and by r compared with the default constant C of program, if r<C, then Judgement is not that after pulse is believed, flag bit is zeroed out, and returns and performs step（2）If r >=C, pulse signal is confirmed as, it is suitable Sequence performs next step（5）；（5）After having judged pulse signal, set is carried out to flag bit, again returns to step（2）Carry out down The detection of one wheel pulse signal.
- 2. new pulse signal detection method according to claim 1, it is characterized in that：Described constant C scope exists 29≤C≤31, constant C are rounded.
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| CN201410335456.3A CN104090513B (en) | 2014-07-15 | 2014-07-15 | A kind of new pulse signal detection method |
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| CN201410335456.3A CN104090513B (en) | 2014-07-15 | 2014-07-15 | A kind of new pulse signal detection method |
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| CN104090513B true CN104090513B (en) | 2018-02-23 |
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| US20010003286A1 (en) * | 1999-07-14 | 2001-06-14 | Jay E. Philippbar | Flood control device |
| CN1187915C (en) * | 2003-01-24 | 2005-02-02 | 杭州国芯科技有限公司 | Method for detecting impulse interference in digital signal transmission |
| CN1536151A (en) * | 2003-04-11 | 2004-10-13 | 乐金电子(天津)电器有限公司 | Clutch motor control method for full-automatic washing machine |
| CN101173474B (en) * | 2006-11-01 | 2011-11-30 | 海尔集团公司 | Method for checking failures of washing machine electric motor loop and clothes amount detection circuit |
| CN103486068B (en) * | 2013-09-16 | 2016-03-30 | 福建星网锐捷网络有限公司 | The control detecting method of intelligent fan and device, intelligent fan |
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