CN109324209A - The method and apparatus whether rotated for detecting drum for clothes drier - Google Patents
The method and apparatus whether rotated for detecting drum for clothes drier Download PDFInfo
- Publication number
- CN109324209A CN109324209A CN201710647716.4A CN201710647716A CN109324209A CN 109324209 A CN109324209 A CN 109324209A CN 201710647716 A CN201710647716 A CN 201710647716A CN 109324209 A CN109324209 A CN 109324209A
- Authority
- CN
- China
- Prior art keywords
- roller
- site
- variation
- resistance value
- oscillating circuit
- 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.)
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P13/00—Indicating or recording presence, absence, or direction, of movement
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/32—Control of operations performed in domestic laundry dryers
- D06F58/34—Control of operations performed in domestic laundry dryers characterised by the purpose or target of the control
- D06F58/50—Responding to irregular working conditions, e.g. malfunctioning of blowers
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Washing Machine And Dryer (AREA)
Abstract
The invention belongs to dryer technical fields, and in particular to a kind of method and apparatus whether rotated for detecting drum for clothes drier.In order to solve the problems, such as existing detection roller whether the method for normal rotation structure is complicated, at high cost, the method for the present invention includes the following steps: detecting the variation of resistance value between the first site and the second site in the roller；Variation based on the resistance value judges whether the roller rotates.The resistance value when contact with clothing of different humidity is to two sites in roller is different, and due to the rotation of roller, same part clothing will not be permanently connected on two sites, but different clothings can all touch two sites during operation, above-mentioned principle is cleverly utilized in inventor, utilize the variation of resistance value between two sites in roller, to judge whether roller rotates, relative to the existing mode for adding belt shipper, the configuration of the present invention is simple and the cost for reducing complete machine, convenient for promoting.
Description
Technical field
The invention belongs to dryer technical fields, and in particular to a method of for detecting whether drum for clothes drier rotates
And device.
Background technique
Dryer is usual to the drying mode of clothing are as follows: wet wash is directly placed in roller, with the rotation of roller,
Also with rotation, hot wind enters in roller to be contacted clothing with the wet wash in roller, the moisture on wet wash is taken away, until bucket
Until interior clothes drying.Currently, dryer be by motor belt drive roller rotation, once belt fracture will lead to roll
Cylinder does not turn, and causes dryer that cannot normally dry, or even since localized hyperthermia causes the safety accident of roller undergarment kindling.Cause
This, monitoring roller whether normal rotation be dryer safe operation in an important link.
In order to monitor roller whether normal rotation, the prior art use method be mainly: it is specific on motor belt periphery
A belt shipper is added in position, the meeting trigger switch movement when motor belt fracture, after control unit detects switch motion
Judge that motor belt is broken, is further processed to make.Whether the mode structure of normal rotation compares this monitoring roller
Complexity, and increase the cost of complete machine.
Therefore, this field needs a kind of new method and apparatus to solve the above problems.
Summary of the invention
In order to solve the above problem in the prior art, in order to solve existing detection roller whether the method for normal rotation
The problem that structure is complicated, at high cost, of the invention is used to detect the method whether drum for clothes drier rotates, and this method includes following
Step: the variation of resistance value between the first site and the second site in the roller is detected；Variation based on the resistance value
Judge whether the roller rotates.
In the preferred embodiment of the above method, first site and second site are respectively oscillating circuit
First contact jaw and the second contact jaw.
In the preferred embodiment of the above method, " detect between the first site and the second site in the roller
The step of variation of resistance value ", specifically includes: obtaining the variation of the frequency of oscillation of the oscillating circuit；According to the frequency of oscillation
Variation judge the variation of the resistance value.
In the preferred embodiment of the above method, the frequency of oscillation of the oscillating circuit is adjusted to 80Hz-2300Hz
Between.
In the preferred embodiment of the above method, " variation based on the resistance value judges whether the roller rotates "
The step of specifically include: obtain preset time in the resistance value variation；If the resistance value is within a preset time
Variation is lower than preset value, then the roller does not rotate；Conversely, then the roller is in rotary state.
In the preferred embodiment of the above method, first site is provided with the first metalwork, second site
It is provided with the second metalwork, first metalwork and second metalwork respectively constitute the first contact of the oscillating circuit
End and the second contact jaw.
The device whether the present invention also provides a kind of rotates for detecting drum for clothes drier, the device include oscillating circuit
And processing unit, the first contact jaw and the second contact jaw of the oscillating circuit are respectively arranged at the first site and in roller
Two sites；The processing unit is used to obtain the frequency variation of the oscillating circuit, and according to frequency variation judgement
Whether roller rotates.
In the preferred embodiment of above-mentioned apparatus, first site is provided with the first metalwork, second site
It is provided with the second metalwork, first metalwork and second metalwork respectively constitute the first contact of the oscillating circuit
End and the second contact jaw.
In the preferred embodiment of above-mentioned apparatus, the frequency of oscillation of the oscillating circuit is adjusted to 80Hz-2300Hz
Between.
In the preferred embodiment of above-mentioned apparatus, the oscillating circuit is RC oscillating circuit.
In the inventive solutions, using in roller between two sites resistance value variation, to judge that roller is
No rotation.Since the resistance value after the contact with clothing to two sites of different humidity in roller is different, and turn due to roller
Dynamic, same part clothing will not be permanently connected on two sites, but the clothing of different humidity can all connect during operation
Contact two sites.Therefore, if the resistance value between two sites is stable at some value within a certain period of time, illustrate roller
It does not rotate, conversely, then roller rotates.Further, since the resistance value between the first site and the second site constantly changes, cause
The frequency of oscillation of RC oscillating circuit also can constantly change.Therefore, by obtaining the variation of the frequency of oscillation of RC oscillating circuit, i.e.,
The variation of resistance value can be judged according to the variation of the frequency of oscillation.Above-mentioned principle is cleverly utilized in inventor, to judge roller
Whether rotate, relative to the existing scheme for adding belt shipper on belt, the solution of the present invention structure is simple, but also reduces
The cost of complete machine, convenient for promoting.
Detailed description of the invention
Fig. 1 is the present invention for detecting the flow chart for the method whether drum for clothes drier rotates；
Fig. 2 is a kind of detail flowchart of embodiment of the present invention for detecting the method whether drum for clothes drier rotates；
Fig. 3 is the present invention for detecting the structural schematic diagram for the device whether drum for clothes drier rotates.
Specific embodiment
The preferred embodiment of the present invention described with reference to the accompanying drawings.It will be apparent to a skilled person that this
A little embodiments are used only for explaining technical principle of the invention, it is not intended that limit the scope of the invention.For example, although
Describe each step of method of the invention in the application according to particular order, but these be not sequentially it is restrictive,
Under the premise of without departing from basic principle of the invention, those skilled in the art can execute the step in a different order
Suddenly.
As shown in Figure 1, the present invention includes the following steps: S110, inspection for detecting the method whether drum for clothes drier rotates
Survey the variation of resistance value between the first site and the second site in roller；S120, the variation based on resistance value judge that roller is
No rotation.
Specifically, during roller rotation, the clothing of different humidity can constantly contact the first site and with the
Two sites, to make clothing as load the first site of access and between the second site.Due to the clothing conduct of different humidity
Resistance value when load is different, and roller in the course of rotation, will constantly access not between the first site and the second site
Clothing with humidity is as load, and in this case, the resistance value between the first site and the second site is also continually changing.Hair
Bright people dexterously utilizes above-mentioned principle, and the variation by resistance value between the first site of detection and the second site is to judge roller
No rotation.Specifically, illustrating the clothing of different humidity if the resistance value between the first site and the second site constantly changes
In alternately the first site of contact and the second site, namely prove that roller is in the state of rotation., whereas if the first site and
Resistance value between two sites does not change within certain time, illustrates do not have during this period of time between the first site and the second site
There is the clothing of access different humidity, namely proves that roller is during this period of time in the state not rotated.Once detecting roller
In non-rotary state, then illustrate that dryer has been likely to occur accident, such as the belt of roller is broken, it at this time can be direct
Stop drying operation, to prevent clothes from the events such as occurring catching fire at high temperature.
As one preferred embodiment of the invention, in step s 110, the first site and the second site are respectively RC
The first contact jaw and the second contact jaw of oscillating circuit.When the clothing in roller connects with the first site and the second site respectively
After touch, which is the load for being used as RC oscillating circuit；Conversely, RC oscillating circuit is unloaded.Due to the first site and the second site
Between resistance value constantly change, cause the frequency of oscillation of RC oscillating circuit also can constantly change.By obtaining RC oscillation electricity
The variation of the frequency of oscillation on road can judge the variation of resistance value according to the variation of the frequency of oscillation.
Specifically, illustrating the first site and the second site when the frequency of oscillation of RC oscillating circuit is in variable condition
Between resistance value be also variation, i.e., the clothing of different humidity alternately and the first site and second point contact, Jin Erke
To judge that roller is in the state of rotation.Conversely, without access clothing or clothing between the first site of explanation and the second site
Do not change alternately, and then may determine that roller is in non-rotary state.Further, the parameter for adjusting RC oscillating circuit makes to vibrate
Frequency accurately judges in some sections (such as: between 80Hz-2300Hz) variation so as to the variation according to frequency of oscillation
Whether roller rotates.The section of the frequency of oscillation can be adjusted according to actually detected sensitivity, to guarantee testing result
Accuracy.
In the step s 120, the variation based on resistance value judges that mode that whether roller rotates can be with are as follows: obtains first
The variation of resistance value within a preset time between point and the second site；Within a preset time, if the changing value is lower than default
Value, then roller does not rotate；Conversely, then roller is in rotary state.Specifically, if in preset time, between two sites
Change in resistance very little or have almost no change, illustrate not access the load (clothing of load (clothing) or access between two sites
Object) do not change alternately, it can determine whether out that roller is in non-rotary state；Conversely, the resistance value between i.e. two sites constantly changes
Among, then it can determine whether out that roller is in rotary state.
In a preferred embodiment of the present invention, when the change in resistance between the first site and the second site, RC
The frequency of oscillating circuit can also change, and hence it is also possible to judge first by the frequency variation for detecting RC oscillating circuit
Change in resistance between site and the second site.It in other words, can also be by detecting the frequency variation of RC oscillating circuit come directly
Judge whether roller rotates.For example, a frequency anomaly value is preset first, once detect that the frequency of RC oscillating circuit becomes
Change and be lower than the exceptional value, illustrates that the frequency of the RC oscillating circuit varies less or has almost no change, i.e. between two sites not
The load (clothing) of access load (clothing) or access does not change alternately, can determine whether out that roller is in as rotary state；Conversely, i.e.
Resistance value between two sites constantly changes, then can determine whether out that roller is in rotary state.Illustrate this hair referring to Fig. 2
It is bright to be used to detect the specific method whether drum for clothes drier rotates.
As shown in Fig. 2, after dryer is started to work, frequency of oscillation value f of the acquisition RC oscillating circuit at the T0 moment firstT0,
RC oscillating circuit is acquired again in the frequency of oscillation value f at T1 momentT1, then calculate fT1With fT0Difference, and by the difference and Δ F
Compare, wherein Δ F is the exceptional value of preset frequency of oscillation.Work as fT1With fT0Difference be less than Δ F, then roller rotation is abnormal；When
fT1With fT0Difference be not less than Δ F, then by fT1Value be assigned a value of fT0, then proceed to the frequency of oscillation value of acquisition subsequent time
“fT1", it so recycles, when there is fT1With fT0Difference when being less than Δ F, then judge that roller rotation is abnormal, stop detection；If fT1
With fT0Difference be not less than Δ F, then illustrate that roller is constantly in normal rotation.
It will be appreciated to those of skill in the art that the time is preset time Δ T between T1 moment and T0 moment, that is,
In roller operational process, the frequency change of a RC oscillating circuit is obtained every Δ T.That is, the first moment T0 is obtained
Take the vibration frequency value f of RC oscillating circuitT0, the second moment T1 after interval delta T obtains the vibration frequency f of RC oscillating circuitT1,
If fT1With fT0Difference be not less than Δ F, then in preset time Δ T, the frequency of RC oscillating circuit is in constantly to be become explanation
In change, i.e. load (clothing) between the first site and the second site also changes constantly, can determine whether out that roller is in rotation
State.At this point, fT1Value as fT0, current T1 is to be used as the T0 moment, opens next detection circulation.Passing through again
Cross the frequency of oscillation value f that the T1 moment after Δ T time obtains RC oscillating circuitT1, multilevel iudge monitors roller repeatedly again
Rotation situation.When there is fT1With fT0Difference be less than Δ F when, illustrate in preset time Δ T, the oscillation of RC oscillating circuit
Frequency does not change or has almost no change, i.e. does not access between the first site and the second site load (clothing), or access
Load remain static, can determine whether out that roller is in non-rotary state.Dryer is made further according to the result detected
Processing, to prevent clothing from catching fire because of localized hyperthermia, causes safety accident.
Preferably, the first site in roller is provided with the first metalwork (such as metal strip), is provided in the second site
Second metalwork (such as metal strip), the first metalwork and the second metalwork respectively constitute the first contact jaw and of RC oscillating circuit
Two contact jaws.So, by judging the variation of resistance value between two metalworks, that is, it can determine whether roller rotates, root
Judge whether belt is broken according to the rotation situation of roller, is further processed to make.Relative to the existing belt shipper added
The structure of scheme, this programme is simple, it is only necessary to using two metal strips being set in roller, further reduced complete machine at
This.
The device whether the present invention also provides a kind of rotates for detecting drum for clothes drier.As shown in Figure 1, the device packet
Include oscillating circuit and processing unit.Wherein, the first contact jaw of oscillating circuit and the second contact jaw are respectively arranged in roller
First site and the second site.Preferably, the first site is provided with the first metalwork, and the second site is provided with the second metalwork,
First metalwork and the second metalwork respectively constitute the first contact point and the second contact point of oscillating circuit.When the clothing in roller
After being in contact respectively with the first contact jaw and the second contact jaw, for oscillating circuit access load；Conversely, oscillating circuit is unloaded.
Processing unit is used to obtain the frequency variation of oscillating circuit, and judges whether roller rotates according to frequency variation.
Preferably, which is RC oscillating circuit, and frequency of oscillation is adjusted between 80Hz-2300Hz.This hair
The bright concrete operating principle for being used to detect the device whether drum for clothes drier rotates, the explanation seen above, details are not described herein.
So far, it has been combined preferred embodiment shown in the drawings and describes technical solution of the present invention, still, this field
Technical staff is it is easily understood that protection scope of the present invention is expressly not limited to these specific embodiments.Without departing from this
Under the premise of the principle of invention, those skilled in the art can make equivalent change or replacement to the relevant technologies feature, these
Technical solution after change or replacement will fall within the scope of protection of the present invention.
Claims (10)
1. a kind of method whether rotated for detecting drum for clothes drier, which is characterized in that this method includes the following steps:
Detect the variation of resistance value between the first site and the second site in the roller；
Variation based on the resistance value judges whether the roller rotates.
2. the method according to claim 1, wherein first site and second site are respectively to vibrate
The first contact jaw and the second contact jaw of circuit.
3. according to the method described in claim 2, it is characterized in that, " detecting the first site and the second site in the roller
Between resistance value variation " the step of specifically include:
Obtain the variation of the frequency of oscillation of the oscillating circuit；
The variation of the resistance value is judged according to the variation of the frequency of oscillation.
4. according to the method described in claim 3, it is characterized in that, the frequency of oscillation of the oscillating circuit is adjusted to 80Hz-
Between 2300Hz.
5. according to the method described in claim 4, it is characterized in that, " variation based on the resistance value judges that the roller is
The step of no rotation ", specifically includes:
Obtain the variation of the resistance value in preset time；
If the variation of the resistance value within a preset time is lower than preset value, the roller is not rotated；Conversely, the then rolling
Cylinder is in rotary state.
6. the method according to any one of claim 2 to 5, which is characterized in that first site is provided with the first gold medal
Belong to part, second site is provided with the second metalwork, and first metalwork and second metalwork respectively constitute described
The first contact jaw and the second contact jaw of oscillating circuit.
7. a kind of device whether rotated for detecting drum for clothes drier, which is characterized in that the device includes oscillating circuit and place
Unit is managed,
The first contact jaw and the second contact jaw of the oscillating circuit are respectively arranged at the first site and the second site in roller；
The processing unit is used to obtain the frequency variation of the oscillating circuit, and judges the roller according to frequency variation
Whether rotate.
8. device according to claim 7, which is characterized in that first site is provided with the first metalwork, and described
Two sites are provided with the second metalwork, and first metalwork and second metalwork respectively constitute the of the oscillating circuit
One contact jaw and the second contact jaw.
9. device according to claim 8, which is characterized in that the frequency of oscillation of the oscillating circuit is adjusted to 80Hz-
Between 2300Hz.
10. device according to any one of claims 7 to 9, which is characterized in that the oscillating circuit is RC oscillation electricity
Road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710647716.4A CN109324209A (en) | 2017-08-01 | 2017-08-01 | The method and apparatus whether rotated for detecting drum for clothes drier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710647716.4A CN109324209A (en) | 2017-08-01 | 2017-08-01 | The method and apparatus whether rotated for detecting drum for clothes drier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109324209A true CN109324209A (en) | 2019-02-12 |
Family
ID=65245829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710647716.4A Pending CN109324209A (en) | 2017-08-01 | 2017-08-01 | The method and apparatus whether rotated for detecting drum for clothes drier |
Country Status (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112202528A (en) * | 2020-08-17 | 2021-01-08 | 北京海泰方圆科技股份有限公司 | Communication baud rate correction method and device, electronic equipment and storage medium |
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Application publication date: 20190212 |
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