CN106676818B - Detection method and system for dewatering barrel of pulsator washing machine - Google Patents
Detection method and system for dewatering barrel of pulsator washing machine Download PDFInfo
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Abstract
The invention provides a method and a system for detecting a dewatering barrel of a pulsator washing machine, wherein the method comprises the steps of obtaining an acceleration value detected by an acceleration sensor, wherein the acceleration sensor is used for detecting the acceleration value of the dewatering barrel; acquiring the eccentricity of the dewatering barrel according to the acceleration value; and comparing the relation between the eccentric amount and the critical eccentric amount, and generating a control command for the dewatering barrel according to the relation between the eccentric amount and the critical eccentric amount. The method solves the long-standing defects of the pulsator washing machine, not only can accurately sense the current state of clothes, but also saves the manufacturing cost of the washing machine.
Description
Technical Field
The invention relates to the technical field of washing machines, in particular to a detection method and a detection system for a dewatering barrel of a pulsator washing machine.
Background
At present, when a pulsator washing machine dehydrates, if clothes in a current dehydration barrel are wound and generate large unbalance, the clothes can be shaken and dispersed by the pulsator washing machine and then dehydrated. In the prior art, the unbalanced control is realized by a mechanical switch arranged at a certain position away from a dewatering barrel of a washing machine, wherein the mechanical switch has a certain breaking stroke, when the clothes in the inner barrel of the washing machine are greatly unbalanced due to winding and the like, the dewatering barrel can generate larger vibration during dewatering, and if the offset of the vibration reaches the set value of the breaking stroke of the mechanical switch, the mechanical switch is broken, and the clothes are shaken and dehydrated again.
However, there are problems in that the above method has several problems as follows:
1. the dependence on the motion track of the dewatering barrel is strong, and due to the uncertainty of the motion track of the dewatering barrel, the washing machine is often caused to generate abnormal phenomena such as barrel collision, displacement and the like;
2. the poor assembly consistency caused by the installation of the mechanical switch can cause the abnormal phenomena of tub collision, displacement and the like of the washing machine;
3. the unbalanced state of the laundry can be sensed only roughly at the starting stage of the dehydration tub, and the unbalanced state of the laundry cannot be sensed accurately in real time in the whole dehydration process.
Disclosure of Invention
The present invention aims to solve at least one of the above-mentioned technical problems to a certain extent.
Therefore, a first object of the present invention is to provide a method for detecting a spin-drying tub of a pulsator washing machine, which solves the long-standing drawbacks of pulsator washing machines, not only can accurately sense the current state of laundry, but also can save the manufacturing cost of washing machines.
The second purpose of the invention is to provide a detection system of a dewatering barrel of a pulsator washing machine.
In order to achieve the above object, a first embodiment of the present invention provides a method for detecting a spin-drying tub of a pulsator washing machine, including: acquiring an acceleration value detected by an acceleration sensor, wherein the acceleration sensor is used for detecting the acceleration value of the dewatering barrel; and comparing the relation between the acceleration value and a preset acceleration value, and generating a control instruction for the dewatering barrel according to the relation between the acceleration value and the preset acceleration value, wherein the preset acceleration value is the acceleration value of the dewatering barrel in a critical eccentricity state.
According to the detection method of the pulsator washing machine dehydration barrel, the acceleration value of the dehydration barrel of the washing machine is obtained through the acceleration sensor, so that the state of clothes in the dehydration barrel is judged according to the acceleration value of the dehydration barrel to control the next action of the dehydration barrel. Therefore, the acceleration sensor is used for carrying out all-dimensional vibration detection, the dependence on the movement track of the dewatering barrel is not needed, the acceleration sensor is embedded into the original PCB of the washing machine, the problem of assembly is avoided, the acceleration sensor is used for detecting the acceleration value of the dewatering barrel in real time in the dewatering process, and the unbalanced state of clothes can be detected in real time in the whole dewatering process. In addition, the acceleration sensor directly reacts to the vibration of the dewatering barrel, so that the detection precision is greatly improved compared with the traditional mode, the long-term defects of the pulsator washing machine are overcome, the current state of clothes can be accurately sensed, and the manufacturing cost of the washing machine is saved.
In addition, in the embodiment of the present invention, the acceleration sensor is disposed on a printed circuit board PCB hard-coupled to the spin-drying tub or the washing machine cabinet.
According to one embodiment of the invention, the acceleration sensor is a three-axis acceleration sensor.
According to an embodiment of the invention, the method for detecting the dewatering barrel of the pulsator washing machine further comprises the following steps: acquiring acceleration values a of the acceleration sensor in x, y and z directions in real timex、ay、az(ii) a Respectively according to the acceleration values ax、ay、azCalculating transient acceleration Deltaax、△ay、△az(ii) a And according to said transient acceleration Δ ax、△ay、△azAnd calculating the acceleration value delta a of the dewatering barrel.
According to an embodiment of the present invention, the control command includes a dewatering action and a shaking-out action, and the generating the control command for the dewatering barrel according to the relation between the acceleration value and the preset acceleration value specifically includes: if the acceleration value is smaller than the preset acceleration value, controlling the dewatering barrel to perform dewatering action; or if the acceleration value is greater than or equal to the preset acceleration value, controlling the dewatering barrel to shake apart.
To achieve the above object, an embodiment of a second aspect of the present invention provides a detection system for a spin-tub of a pulsator washing machine, comprising an acceleration sensor and a controller, wherein the acceleration sensor is used for detecting an acceleration value of the spin-tub; the controller is used for obtaining an acceleration value of the dewatering barrel, comparing the relation between the acceleration value and a preset acceleration value, and generating a control instruction for the dewatering barrel according to the relation between the acceleration value and the preset acceleration value, wherein the preset acceleration value is the acceleration value of the dewatering barrel in a critical eccentricity state.
According to the detection system of the pulsator washing machine dewatering barrel, the acceleration sensor is used for obtaining the acceleration value of the washing machine dewatering barrel, the controller is used for judging the state of clothes in the dewatering barrel according to the acceleration value of the dewatering barrel so as to control the next action of the dewatering barrel, therefore, the acceleration sensor is used for carrying out all-dimensional vibration detection, the dependence on the motion track of the dewatering barrel is not needed, the acceleration sensor is embedded into an original PCB of the washing machine, the problem of assembly is avoided, the acceleration sensor is used for detecting the acceleration value of the dewatering barrel in real time in the dewatering process, and the unbalanced state of the clothes can be detected in real time in the whole dewatering process. In addition, the acceleration sensor directly reacts to the vibration of the dewatering barrel, so that the detection precision is greatly improved compared with the traditional mode, the long-term defects of the pulsator washing machine are overcome, the current state of clothes can be accurately sensed, and the manufacturing cost of the washing machine is saved.
In addition, in the embodiment of the present invention, the acceleration sensor is disposed on a printed circuit board PCB hard-coupled to the spin-drying tub or the washing machine cabinet.
According to one embodiment of the invention, the acceleration sensor is a three-axis acceleration sensor.
According to an embodiment of the invention, the controller is specifically configured to: acquiring acceleration values a of the acceleration sensor in x, y and z directions in real timex、ay、az(ii) a Respectively according to the acceleration values ax、ay、azCalculating transient acceleration Deltaax、△ay、△az(ii) a And according to said transient acceleration Δ ax、△ay、△azAnd calculating the acceleration value delta a of the dewatering barrel.
According to an embodiment of the present invention, the control instruction includes a dehydration action and a shaking-out action, and the controller is specifically configured to: when the acceleration value is smaller than the preset acceleration value, controlling the dewatering barrel to perform dewatering action; or when the acceleration value is larger than or equal to the preset acceleration value, controlling the dewatering barrel to shake and disperse.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a flow chart of a method for detecting a spin-drying tub of a pulsator washing machine according to an embodiment of the present invention;
FIG. 2 is a schematic view of an acceleration sensor disposed on a printed circuit board PCB hard-wired to a tub or a washing machine cabinet according to an embodiment of the present invention;
FIGS. 3(a) - (c) are transient accelerations Δ a resulting from large, medium and small eccentricities, according to a specific embodiment of the present inventionx、△ay、△azRepeating the test values 20 times to generate a graph;
FIG. 4 is a graphical illustration of acceleration values corresponding to large eccentricity, medium eccentricity, and small eccentricity in accordance with a specific embodiment of the present invention; and
fig. 5 is a schematic structural diagram of a detection system of a pulsator washing machine dehydration barrel according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
The following describes a detection method and a system of a pulsator washing machine dehydration barrel according to an embodiment of the present invention with reference to the accompanying drawings.
Fig. 1 is a flowchart of a method for detecting a spin-drying tub of a pulsator washing machine according to an embodiment of the present invention.
As shown in fig. 1, the method for detecting a spin-drying tub of a pulsator washing machine according to the embodiment of the present invention includes the following steps:
and S110, acquiring an acceleration value detected by an acceleration sensor, wherein the acceleration sensor is used for detecting the acceleration value of the dewatering barrel.
In one embodiment of the present invention, the acceleration sensor is disposed on a printed circuit board PCB that is hard-wired to the dehydration tub or the washing machine cabinet. For example, as shown in fig. 2, an acceleration sensor may be disposed on a PCB board hard-connected to the spin tub or the cabinet of the washing machine, and an acceleration signal collected by the acceleration sensor may directly reflect the vibration level of the spin tub, thereby detecting whether the laundry in the spin tub of the washing machine is unbalanced. Of course, the acceleration sensor may be disposed at other positions of the washing machine as long as the vibration magnitude of the spin-drying tub can be detected. That is, the acceleration sensor can be embedded in various ways according to different requirements to achieve the effect of detecting the acceleration value of the dewatering drum of the washing machine in real time.
It should be understood that the acceleration sensor is disposed on the original PCB of the washing machine, so that there is no need to add a new PCB, and the PCB provided with the acceleration sensor can detect the acceleration signal of the spin-drying tub in addition to performing the original function of the washing machine. The PCB board that sets up acceleration sensor can select the PCB board of being connected with the dehydration, also can select the PCB board of being connected with the washing machine box, however requires this PCB board and dehydration bucket to carry out the hard joint to can realize the detection to dehydration bucket vibration.
And S120, comparing the relation between the acceleration value and a preset acceleration value, and generating a control instruction for the dewatering barrel according to the relation between the acceleration value and the preset acceleration value, wherein the preset acceleration value is the acceleration value of the dewatering barrel in a critical eccentricity state.
When the washing machine dehydrates the clothes, if the clothes in the dehydration barrel are in an unbalanced state, the dehydration barrel generates certain eccentricity. The vibration displacement generated by the corresponding dehydration barrel is different according to the different magnitude of the eccentric amount, so that the acceleration signal collected by the PCB reflects the vibration displacement of the dehydration barrel according to the equivalent relation of the vibration displacement and the acceleration value of the dehydration barrel, and further reflects the eccentric amount of the dehydration barrel. That is, the acceleration value collected by the PCB is compared with the acceleration value corresponding to the critical eccentricity, that is, the unbalanced state of the laundry in the washing machine can be directly reflected according to the signal of the acceleration sensor, wherein the critical eccentricity is the critical state when the displacement of the spin-drying tub does not occur.
Specifically, when the washing machine dewatering barrel works, the movement of the washing machine dewatering barrel can be equivalent to simple harmonic movement with a single degree of freedom, and the expression is as follows:
wherein, the amplitude A represents the maximum displacement of the vibration and reflects the strength of the vibration; the angular frequency omega is a constant determined by the system, is irrelevant to the initial condition of dehydration and reflects the speed of vibration; the period T is 2 pi/omega, which represents the time for completing one-time full vibration and reflects the speed of vibration; the frequency V is omega/2 pi, the frequency V represents the number of times of complete full vibration in unit time, and reflects the speed of vibration; phase (ω t + φ) trueAnd determining the vibration state of the object at any time. Therefore, the acceleration: a ═ 2x)/(dt ^2) ═ a ω ^2cos (ω t + Φ) ═ a ω [ (a ω) · 2cos ((ω t + Φ ± pi): in other words, for the same type of washing machine, ω is the same and the phase is the same under the same speed control, acceleration a is positively correlated with amplitude a, i.e., a ^ a.
Furthermore, after the washing machine starts to dewater, the acceleration sensor collects the acceleration value of the dewatering barrel in real time, and the vibration of the dewatering barrel can be judged after the acceleration value is compared with the preset acceleration value corresponding to the critical eccentricity because different acceleration values correspond to different eccentricities.
Further, if the acceleration value is smaller than the preset acceleration value, a control instruction for controlling the dehydration action of the dehydration barrel is generated, and the dehydration action of the dehydration barrel is controlled according to the control instruction. And if the acceleration value is greater than or equal to the preset acceleration value, generating a control instruction for controlling the dewatering barrel to shake apart, and controlling the dewatering barrel to shake apart the clothes according to the control instruction.
In one embodiment of the present invention, the acceleration sensor may preferably be a three-axis acceleration sensor. Specifically, the acceleration values a of the acceleration sensor in the x, y and z directions are acquired in real timex、ay、azRespectively according to said acceleration values ax、ay、azCalculating transient acceleration Deltaax、△ay、△azAnd according to said transient acceleration Δ ax、△ay、△azAnd calculating the acceleration value delta a of the dewatering barrel.
For example, the invention is verified based on rotary drum washing machine TB85-6188 IDCL:
1. an acceleration sensor is embedded in a PCB connected to the dehydration tub, and as shown in fig. 2, a small eccentricity (1000g), a middle eccentricity (1500g), and a large eccentricity (2700g) are respectively placed in the washing machine. The dewatering beat of the washing machine according to the model is added in the transient stage (DT stage) of dewatering starting within 15sThe speed sensor collects acceleration values a in x, y and z directions in real timex、ay、az。
2. Calculating the transient acceleration Delta ax、△ay、△az，
△ax＝MAX(a0x:aTx)-MIN(a0x:aTx)；
△ay＝MAX(a0y:aTy)-MIN(a0y:aTy)；
△az＝MAX(a0z:aTz)-MIN(a0z:aTz)；
3. Calculating delta a, delta a ═ delta ax+△ay+△az。
4. And (4) carrying out eccentricity judgment:
delta a < [ Delta a _ limit1 → small eccentricity, and the next dehydration action;
deltaa ≧ Deltaa _ limit1 → large eccentricity, stopping dithering; Δ a _ limit1 is an acceleration value corresponding to the critical eccentricity.
As shown in FIGS. 3(a) - (c), the transient acceleration Δ a obtained for different eccentricitiesx、△ay、△azEach eccentricity was tested by repeating 20 times. As shown in fig. 4, acceleration values corresponding to the large eccentricity, the medium eccentricity, and the small eccentricity have certain discrimination. It can thus be seen that the method proposed by the embodiments of the present invention is feasible.
Further, in the dehydration high-speed steady-state stage (ST stage), Δ a is calculated in the same manner as in T2 of 5s, and the eccentricity determination is verified.
According to the detection method of the pulsator washing machine dehydration barrel, the acceleration value of the dehydration barrel of the washing machine is obtained through the acceleration sensor, and therefore the state of clothes in the dehydration barrel is judged according to the acceleration value of the dehydration barrel so as to control the next action of the dehydration barrel. Therefore, the acceleration sensor is used for carrying out all-dimensional vibration detection, the dependence on the movement track of the dewatering barrel is not needed, the acceleration sensor is embedded into the original PCB of the washing machine, the problem of assembly is avoided, the acceleration sensor is used for detecting the acceleration value of the dewatering barrel in real time in the dewatering process, and the unbalanced state of clothes can be detected in real time in the whole dewatering process. In addition, the acceleration sensor directly reflects the vibration of the dewatering barrel, so that the detection accuracy is greatly improved compared with the traditional mode.
The detection method of the spin-drying tub of the pulsator washing machine solves the long-standing defects of the pulsator washing machine, not only can accurately sense the current state of clothes, but also saves the manufacturing cost of the washing machine.
In order to realize the embodiment, the invention further provides a detection system of the dewatering barrel of the pulsator washing machine. Fig. 5 is a schematic structural diagram of a detection system of a pulsator washing machine dewatering tub according to an embodiment of the present invention. As shown in fig. 5, the detection system of the dewatering drum of the pulsator washing machine comprises: an acceleration sensor 510 and a controller 520.
Wherein the acceleration sensor 510 user detects an acceleration value of the dehydration tub. Wherein, the acceleration sensor 510 is disposed on a printed circuit board PCB hard connected to the spin-drying tub or the washing machine cabinet, for example, the acceleration sensor 510 may be disposed on a printed circuit board PCB hard connected to the spin-drying tub or the washing machine cabinet, and an acceleration signal collected by the acceleration sensor 510 may directly reflect the vibration magnitude of the spin-drying tub, thereby detecting whether the laundry in the spin-drying tub of the washing machine is unbalanced. Of course, the acceleration sensor 510 may be disposed at other positions of the washing machine as long as the vibration magnitude of the spin-drying tub can be detected. That is, the acceleration sensor 510 may be embedded in various ways according to different requirements to achieve the effect of detecting the acceleration value of the dewatering tub of the washing machine in real time.
It should be understood that the acceleration sensor 510 is disposed on the original PCB of the washing machine, and thus there is no need to add a new PCB, and the PCB provided with the acceleration sensor 510 can detect the acceleration signal of the spin-drying tub in addition to performing the original function of the washing machine. The PCB board that sets up acceleration sensor 510 can select the PCB board of being connected with the dehydration, also can select the PCB board of being connected with the washing machine box, nevertheless requires this PCB board and dehydration bucket to carry out the hard joint to can realize the detection to dehydration bucket vibration.
The controller 520 is configured to obtain an acceleration value of the spin-drying tub, compare a relationship between the acceleration value and a preset acceleration value, and generate a control command for the spin-drying tub according to the relationship between the acceleration value and the preset acceleration value, wherein the preset acceleration value is an acceleration value of the spin-drying tub in a critical eccentricity state. Specifically, after the washing machine starts to spin, the acceleration sensor 510 collects acceleration values of the spin-drying tub in real time, and since different acceleration values correspond to different eccentricities, the controller 520 may determine the vibration magnitude of the spin-drying tub by comparing the acceleration values with a preset acceleration value corresponding to a critical eccentricity.
Further, if it is judged that the acceleration value is less than the preset acceleration value, the controller 520 generates a control command for controlling the dehydration operation of the dehydration tub and controls the dehydration operation of the dehydration tub according to the control command. If the acceleration value is greater than or equal to the preset acceleration value, the controller 520 generates a control command for controlling the spin-drying tub to perform a shaking motion, and controls the spin-drying tub to shake the laundry according to the control command.
In one embodiment of the present invention, the acceleration sensor 510 may preferably be a three-axis acceleration sensor. Specifically, the acceleration sensor 510 collects acceleration values a of the acceleration sensor in x, y, z directions in real timex、ay、azRespectively according to said acceleration values ax、ay、azCalculating transient acceleration Deltaax、△ay、△azAnd according to said transient acceleration Δ ax、△ay、△azAnd calculating the acceleration value delta a of the dewatering barrel.
According to the detection system of the pulsator washing machine dewatering barrel, the acceleration sensor is used for obtaining the acceleration value of the washing machine dewatering barrel, the controller is used for judging the state of clothes in the dewatering barrel according to the acceleration value of the dewatering barrel so as to control the next action of the dewatering barrel, therefore, the acceleration sensor is used for carrying out all-dimensional vibration detection, the dependence on the motion track of the dewatering barrel is not needed, the acceleration sensor is embedded into an original PCB of the washing machine, the problem of assembly is avoided, the acceleration sensor is used for detecting the acceleration value of the dewatering barrel in real time in the dewatering process, and the unbalanced state of the clothes can be detected in real time in the whole dewatering process. In addition, the acceleration sensor directly reacts to the vibration of the dewatering barrel, so that the detection precision is greatly improved compared with the traditional mode, the long-term defects of the pulsator washing machine are overcome, the current state of clothes can be accurately sensed, and the manufacturing cost of the washing machine is saved.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (6)
1. A detection method of a dewatering barrel of a pulsator washing machine is characterized by comprising the following steps:
acquiring acceleration values a of a three-axis acceleration sensor acquired in the x, y and z directions in real time within a preset time periodx、ay、az；
Respectively collecting the acceleration values a according to the preset time periodx、ay、azCalculating the transient acceleration Deltaax、Δay、ΔazWherein Δ ax ═ MAX (a0 x: aTx) -MIN (a0 x: aTx), Δ ay ═ MAX (a0 y: aTy) -MIN (a0 y: aTy), Δ az ═ MAX (a0 z: aTz) -MIN (a0 z: aTz), where T represents the preset time period; and
calculating the transient acceleration Δ ax、Δay、ΔazSumming to obtain an acceleration value delta a of the dewatering barrel; and
and comparing the relation between the acceleration value delta a and a preset acceleration value, and generating a control instruction for the dewatering barrel according to the relation between the acceleration value delta a and the preset acceleration value, wherein the preset acceleration value is the acceleration value of the dewatering barrel in a critical eccentricity state.
2. The method for detecting the dehydration barrel of the pulsator washing machine as claimed in claim 1, wherein the triaxial acceleration sensor is disposed on a printed circuit board PCB board hard-connected to the dehydration barrel or the washing machine cabinet.
3. The method for detecting the spin-drying tub of the pulsator washing machine as claimed in claim 1, wherein the control command includes a spin-drying action and a shaking-out action, and the generating of the control command for the spin-drying tub according to the relationship between the Δ a acceleration value and the preset acceleration value specifically includes:
if the delta a acceleration value is smaller than the preset acceleration value, controlling the dewatering barrel to perform dewatering action; or
And if the delta a acceleration value is greater than or equal to the preset acceleration value, controlling the dewatering barrel to shake apart.
4. A detection system of a dewatering barrel of a pulsator washing machine is characterized by comprising a triaxial acceleration sensor and a controller, wherein,
the three-axis acceleration sensor is used for acquiring acceleration values a acquired by the three-axis acceleration sensor in the x, y and z directions in a preset time period in real timex、ay、az；
The controller is used for respectively acquiring the acceleration values a according to the preset time periodsx、ay、azCalculating the transient acceleration Deltaax、Δay、ΔazAnd calculating the transient acceleration Δ ax、Δay、ΔazAnd summing, acquiring an acceleration value delta a of the dewatering barrel, comparing the acceleration value delta a with a preset acceleration value, and generating a control instruction for the dewatering barrel according to the relation between the acceleration value delta a and the preset acceleration value, wherein the preset acceleration value is the acceleration value of the dewatering barrel in a critical eccentricity state, and the acceleration value delta a is MAX (a0 x: aTx) -MIN (a0 x: aTx), the acceleration value delta ay is MAX (a0 y: aTy) -MIN (a0 y: aTy), the acceleration value delta az is MAX (a0 z: aTz) -MIN (a0 z: aTz), wherein T represents the preset time period.
5. The detecting system of the pulsator washing machine dehydration barrel of claim 4, wherein said triaxial acceleration sensor is provided on a printed circuit board PCB board hard-connected with said dehydration barrel or washing machine cabinet.
6. The detection system of the pulsator washing machine dehydration barrel of claim 4, wherein the control command comprises a dehydration action and a shaking-out action, and the controller is specifically configured to:
when the acceleration value delta a is smaller than the preset acceleration value, controlling the dewatering barrel to perform dewatering action; or
And when the acceleration value delta a is greater than or equal to the preset acceleration value, controlling the dewatering barrel to shake up.
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| CN108360212B (en) * | 2018-02-01 | 2023-11-28 | 惠而浦（中国）股份有限公司 | Method for judging washing effect through acceleration sensor |
| CN111485365B (en) * | 2019-01-28 | 2022-12-20 | 无锡飞翎电子有限公司 | Washing machine and control method and device of clothes treatment device |
| CN113026296A (en) * | 2019-12-09 | 2021-06-25 | 青岛海尔洗衣机有限公司 | Washing machine control method and washing machine |
| CN111607937B (en) * | 2020-05-30 | 2023-07-14 | 广东蓝水花智能电子有限公司 | Efficient washing control method for washing machine |
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