CN107034621B - Washing machine and tub collision detection device and method thereof - Google Patents
Washing machine and tub collision detection device and method thereof Download PDFInfo
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- CN107034621B CN107034621B CN201710331124.1A CN201710331124A CN107034621B CN 107034621 B CN107034621 B CN 107034621B CN 201710331124 A CN201710331124 A CN 201710331124A CN 107034621 B CN107034621 B CN 107034621B
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- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
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Abstract
The invention discloses a washing machine and a barrel collision detection device and method thereof, wherein the barrel collision detection device comprises: the photoelectric coupling detection assembly comprises a first coupling element and a second coupling element, the first coupling element is arranged outside an inner barrel of the washing machine, the second coupling element is arranged inside a box body of the washing machine and matched with the first coupling element, and the first coupling element and the second coupling element are in signal transmission through photoelectric coupling; the detection circuit is connected with the second coupling element and is used for generating a detection signal according to the coupling condition between the first coupling element and the second coupling element; and the controller is connected with the detection circuit and used for judging whether the washing machine collides with the barrel according to the detection signal. According to the barrel collision detection device provided by the invention, the barrel collision phenomenon of the washing machine can be accurately detected, and the reliability is high.
Description
Technical Field
The invention relates to the technical field of washing appliances, in particular to a washing machine barrel collision detection device, a washing machine and a washing machine barrel collision detection method.
Background
When the washing machine performs a washing process or a dehydrating process, if the load in the inner tub, such as laundry, is not uniformly distributed, the inner tub may have an eccentric load, which may cause unbalance of the inner tub, such as deviation, and even tub collision. The continuous tub collision of the washing machine can cause the washing machine to work abnormally and even damage the washing machine.
At present, a washing machine can judge whether a tub collision phenomenon occurs by installing a mechanical tub collision switch, so that the phenomenon is corrected by water inflow when the tub collision phenomenon occurs, and the washing machine can maintain normal operation. However, when the mechanical barrel-impacting switch is used to determine whether the barrel-impacting phenomenon occurs, the mechanical barrel-impacting switch cannot accurately determine whether the barrel-impacting phenomenon occurs due to the influence of the production precision of the mechanical barrel-impacting switch and the installation precision of the whole machine. In addition, the mechanical barrel-impacting switch has the problem that the related components can be loosened after long-term use, and the sensitivity of the mechanical barrel-impacting switch is reduced. Therefore, it is impossible to determine whether the washing machine has a tub collision phenomenon.
Therefore, it is desirable to provide a solution capable of accurately detecting the barrel collision.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the art described above.
Therefore, an object of the present invention is to provide a tub collision detecting device for a washing machine, which can accurately detect a tub collision phenomenon occurring in the washing machine and has high reliability.
A second object of the present invention is to provide a washing machine.
The third objective of the present invention is to provide a tub collision detecting method of a washing machine.
In order to achieve the above object, a first embodiment of the present invention provides a tub collision detecting device for a washing machine, including: the photoelectric coupling detection assembly comprises a first coupling element and a second coupling element, the first coupling element is arranged outside an inner barrel of the washing machine, the second coupling element is arranged inside a box body of the washing machine and matched with the first coupling element, and the first coupling element and the second coupling element are in photoelectric coupling to transmit signals; the detection circuit is connected with the second coupling element and is used for generating a detection signal according to the coupling condition between the first coupling element and the second coupling element; and the controller is connected with the detection circuit and used for judging whether the washing machine has a barrel collision phenomenon according to the detection signal.
According to the tub collision detecting device of the washing machine of the embodiment of the present invention, the photoelectric coupling detecting assembly includes a first coupling element disposed at an outer side of the inner tub of the washing machine and a second coupling element disposed at an inner side of the cabinet of the washing machine, the first coupling element and the second coupling element perform signal transmission through photoelectric coupling, a detection signal is generated through a detection circuit according to a coupling condition between the first coupling element and the second coupling element, and whether the tub collision phenomenon occurs in the washing machine is judged through a controller according to the detection signal. The device can accurately detect the barrel collision phenomenon of the washing machine, has higher reliability, is convenient for taking corresponding measures in time when the barrel collision phenomenon of the washing machine occurs, effectively ensures the normal operation of the washing machine, and can prolong the service life of the washing machine.
In addition, the tub collision detecting device of the washing machine according to the above embodiment of the present invention may further have the following additional technical features:
according to an embodiment of the present invention, the first coupling element is a light emitting diode, and the second coupling element is a phototransistor.
According to an embodiment of the present invention, a collector of the phototransistor is connected to an anode of the light emitting diode and then connected to a predetermined power source, wherein the detection circuit includes: one end of the first resistor is connected with the emitting electrode of the phototriode, and the other end of the first resistor is connected with the controller; one end of the second resistor is connected with one end of the first resistor, and the other end of the second resistor is grounded; the anode of the first diode is connected with the other end of the first resistor, and the cathode of the first diode is connected to the preset power supply; the cathode of the second diode is connected with the anode of the first diode, and the anode of the second diode is grounded; and one end of the first capacitor is connected with the cathode of the second diode, and the other end of the first capacitor is grounded.
According to an embodiment of the present invention, the tub collision detecting apparatus of a washing machine further includes: the drive circuit is respectively connected with the cathode of the light emitting diode and the controller, and is used for driving the light emitting diode to emit light under the control of the controller, wherein the detection circuit generates a high level signal when the phototriode receives the light emitted by the light emitting diode, and generates a low level signal when the phototriode does not receive the light emitted by the light emitting diode.
According to an embodiment of the present invention, the driving circuit includes: one end of the third resistor is connected with the controller; one end of the fourth resistor is connected with the cathode of the light-emitting diode; and the base electrode of the first triode is connected with the other end of the third resistor, the collector electrode of the first triode is connected with the other end of the fourth resistor, and the emitting electrode of the first triode is grounded.
According to an embodiment of the present invention, the controller is configured to determine whether a tub crash phenomenon occurs in the washing machine according to a duration of the low level signal.
According to an embodiment of the present invention, the controller controls the retractor and the motor of the washing machine to be turned off and controls the washing machine to perform the balance washing to correct the unbalanced operation state of the washing machine if the washing machine collides with the tub during the dehydration of the washing machine.
According to an embodiment of the present invention, the controller is further configured to determine whether the number of times that the washing machine has the tub collision phenomenon reaches a preset number of times, and control the washing machine to send an alarm prompt message when the number of times that the washing machine has the tub collision phenomenon reaches the preset number of times.
In order to achieve the above object, a second embodiment of the present invention provides a washing machine, which includes the above mentioned tub collision detection device.
According to the washing machine provided by the embodiment of the invention, the tub collision detection device of the washing machine can accurately detect the tub collision phenomenon, and has high reliability, so that corresponding measures can be taken in time when the tub collision phenomenon occurs, normal operation is effectively ensured, and the service life can be prolonged.
In order to achieve the above object, a third aspect of the present invention provides a method for detecting a drum crash in a washing machine, wherein a first coupling element is disposed at an outer side of an inner drum of the washing machine, a second coupling element is disposed at an inner side of a cabinet of the washing machine, the second coupling element is matched with the first coupling element, and the first coupling element and the second coupling element are photoelectrically coupled for signal transmission, the method comprising the steps of: generating a detection signal according to the coupling condition between the first coupling element and the second coupling element; and judging whether the washing machine has a barrel collision phenomenon according to the detection signal.
According to the method for detecting the tub collision of the washing machine of the embodiment of the invention, firstly, a detection signal is generated according to the coupling condition between the first coupling element and the second coupling element, and then whether the tub collision phenomenon occurs in the washing machine is judged according to the detection signal. The method can accurately detect the tub collision of the washing machine, has high reliability, is convenient for taking corresponding measures in time when the tub collision of the washing machine occurs, effectively ensures the normal operation of the washing machine, and can prolong the service life of the washing machine.
In addition, the tub collision detecting device of the washing machine according to the above embodiment of the present invention may further have the following additional technical features:
according to an embodiment of the present invention, the first coupling element is a light emitting diode, and the second coupling element is a phototransistor.
According to an embodiment of the present invention, the method for detecting tub collision of a washing machine further includes: and driving the light emitting diode to emit light, wherein a high level signal is generated when the phototriode receives the light emitted by the light emitting diode, and a low level signal is generated when the phototriode does not receive the light emitted by the light emitting diode.
According to an embodiment of the present invention, whether the tub crash phenomenon occurs in the washing machine is determined according to the duration of the low level signal.
According to an embodiment of the present invention, in the dehydration process of the washing machine, if the washing machine has a tub collision phenomenon, the tractor and the motor of the washing machine are controlled to be turned off, and the washing machine is controlled to perform a balance washing to correct an unbalanced operation state of the washing machine.
According to an embodiment of the present invention, in the dehydrating process of the washing machine, further comprising: judging whether the frequency of the tub collision phenomenon of the washing machine reaches a preset frequency or not, and controlling the washing machine to send out alarm prompt information when the frequency of the tub collision phenomenon of the washing machine reaches the preset frequency.
Drawings
Fig. 1 is a block schematic view of a tub collision detecting apparatus of a washing machine according to an embodiment of the present invention;
FIG. 2 is a schematic view illustrating an installation position of a photoelectric coupling detecting assembly on a washing machine according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a tub collision detecting apparatus of a washing machine according to an embodiment of the present invention;
fig. 4 is a waveform diagram of a time ratio of detection signals in a normal state and a tub hitting state of a washing machine according to an embodiment of the present invention;
fig. 5 is a flowchart for correcting an unbalanced operation state of a washing machine according to an embodiment of the present invention;
FIG. 6 is a flowchart for processing three times of tub bumping of a washing machine according to an embodiment of the present invention;
FIG. 7 is a block schematic diagram of a washing machine according to an embodiment of the present invention; and
fig. 8 is a flowchart of a tub collision detection method of a washing machine 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.
The washing machine and the tub collision detecting apparatus and method thereof according to the embodiments of the present invention will be described with reference to the accompanying drawings.
Fig. 1 is a block schematic view of a tub collision detecting apparatus of a washing machine according to an embodiment of the present invention.
It should be noted that the washing machine according to the embodiment of the present invention may be a pulsator washing machine or a washing and drying integrated machine, and the following further description of the washing machine may be regarded as an example of the pulsator washing machine.
As shown in fig. 1, the tub collision sensing apparatus of the washing machine according to the embodiment of the present invention may include a photo coupling sensing assembly 10, a sensing circuit 20, and a controller 30.
The photoelectric coupling detecting assembly 10 may include a first coupling element 11 and a second coupling element 12, as shown in fig. 2, the first coupling element 11 may be disposed outside an inner tub of the washing machine, the second coupling element 12 may be disposed inside a cabinet of the washing machine and matched with the first coupling element 11, and the first coupling element 11 and the second coupling element 12 perform signal transmission through photoelectric coupling. The detection circuit 20 is connected to the second coupling element 12, and the detection circuit 20 is configured to generate a detection signal according to a coupling condition between the first coupling element 11 and the second coupling element 12. The controller 30 is connected to the detection circuit 20, and the controller 30 is used for determining whether the washing machine has a tub collision phenomenon according to the detection signal.
In one embodiment of the present invention, as shown in fig. 3, the first coupling element 11 may be a light emitting diode LED, and the second coupling element 12 may be a phototransistor VT. The collector of the phototransistor VT is connected to the anode of the light emitting diode LED and then connected to a predetermined power VCC (e.g., 5V) through a terminal 1 of a connection terminal CN 1.
Specifically, the user can selectively control the washing machine to execute washing and/or dewatering program according to the requirement, and the inner tub loaded with load of the washing machine is in the working state of rotating intermittently or always when the washing machine executes the washing and/or dewatering program. In the process of rotating the inner tub of the washing machine, if the light emitting diode LED is aligned with the phototransistor VT, the phototransistor VT may receive a light signal emitted from the light emitting diode LED, and then the phototransistor VT is turned on, and a high level detection signal may be generated by the detection circuit 20. If the light emitting diode LED deviates from the phototransistor VT, the light signal from the light emitting diode LED is not received by the phototransistor VT, and the phototransistor VT is not turned on, and a low level detection signal can be generated by the detection circuit 20.
The inner tub of the washing machine may shake in different amplitudes during the rotation. If the inner barrel is in a normal state, the light emitting diode LED and the phototriode VT have a certain alignment time within a period of one rotation of the inner barrel, and a time ratio of the high and low level detection signal generated by the detection circuit 20 can be as shown in fig. 4 (a). If the inner barrel is greatly shaken, such as barrel collision, that is, in a barrel collision state, the time for aligning the light emitting diode LED with the phototriode VT is relatively shortened, and the time for deviation is relatively prolonged, and the time ratio for generating the high and low level detection signal by the detection circuit 20 can be as shown in fig. 4 (b). Therefore, in one embodiment of the present invention, the controller 30 may determine whether the tub crash phenomenon occurs in the washing machine according to the duration of the low level signal.
In one embodiment of the present invention, as shown in fig. 3, the detection circuit 20 may include a first resistor R1, a second resistor R2, a first diode D1, a second diode D2, and a first capacitor C1. One end of the first resistor R1 is connected to the emitter of the phototransistor VT through the 2 terminal of the connection terminal CN1, and the other end of the first resistor R1 is connected to the controller 30 through the MCU _ SENSE port. One end of the second resistor R2 is connected to one end of the first resistor R1, and the other end of the second resistor R2 is grounded to GND. An anode of the first diode D1 is connected to the other end of the first resistor R1, and a cathode of the first diode D1 is connected to a predetermined power source VCC (e.g., 5V). The cathode of the second diode D2 is connected to the anode of the first diode D1 and has a first node J1, and the anode of the second diode D2 is grounded GND. One end of the first capacitor C1 is connected to the cathode of the second diode D2, and the other end of the first capacitor C1 is grounded to GND.
Specifically, a high level detection signal may be generated by the detection circuit 20 when the phototransistor VT is conductive, and a low level detection signal may be generated by the detection circuit 20 when the phototransistor VT is non-conductive. When the phototransistor VT is turned on and the voltage value generated at the first node J1 is greater than the sum of the predetermined voltage VCC and the conduction voltage drop of the first diode D1, the first diode D1 is turned on, and the output voltage can be clamped to the sum of the predetermined voltage VCC and the conduction voltage drop of the first diode D1. When the phototransistor VT is not turned on and the voltage value generated at the first node J1 is smaller than the difference between the 0 potential and the conduction voltage drop of the second diode D2, the second diode D2 is turned on, and the output voltage clamp is located between the 0 potential and the conduction voltage drop of the second diode D2, thereby preventing the controller from being damaged due to the overhigh voltage value.
In an embodiment of the present invention, as shown in fig. 3, the tub collision detecting apparatus of the washing machine may further include a driving circuit 40. The driving circuit 40 is connected to the cathode of the light emitting diode LED and the controller 30, respectively, and the driving circuit 40 is configured to drive the light emitting diode LED to emit light under the control of the controller 30, wherein the detection circuit 20 generates a high level signal when the phototriode VT receives the light emitted by the light emitting diode LED, and generates a low level signal when the phototriode VT does not receive the light emitted by the light emitting diode LED.
In one embodiment of the present invention, as shown in fig. 4, the driving circuit 40 may include a third resistor R3, a fourth resistor R4, and a first transistor Q1. Wherein, one end of the third resistor R3 is connected to the controller 30 through the MCU _ DRIVER port. One end of the fourth resistor R4 is connected to the cathode of the light emitting diode LED through the 3 terminal of the connection terminal CN 1. The base of the first triode Q1 is connected with the other end of the third resistor R3, the collector of the first triode Q1 is connected with the other end of the fourth resistor R4, and the emitter of the first triode Q1 is grounded to GND.
When the washing machine executes a washing and/or dewatering program, a high level signal can be output through the MCU _ DRIVER port of the controller 30, and the first transistor Q1 is turned on, thereby driving the light emitting diode LED to emit light. The detection circuit 20 generates a high level signal when the phototriode VT receives the light emitted by the light emitting diode LED, and generates a low level signal when the phototriode VT does not receive the light emitted by the light emitting diode LED, and the controller 30 can judge whether the washing machine has the phenomenon of tub collision according to the duration time of the low level signal, so that the tub collision phenomenon of the washing machine can be accurately detected, the reliability is high, corresponding measures can be taken in time when the tub collision phenomenon of the washing machine occurs, the normal operation of the washing machine is effectively ensured, and the service life of the washing machine can be prolonged.
Corresponding measures are taken respectively aiming at the unbalanced operation state of the washing machine and the phenomenon of three times of tub collision.
In the dehydration process of the washing machine, if the washing machine has a tub collision phenomenon, the controller 30 controls the retractor and the motor of the washing machine to be turned off, and controls the washing machine to perform a balance washing to correct an unbalanced operation state of the washing machine.
As shown in fig. 5, the correction of the unbalanced operation state of the washing machine according to the embodiment of the present invention may include the steps of:
s501, the washing machine executes a dehydration program.
And S502, judging whether the barrel collision phenomenon occurs or not. If yes, go to step S503; if not, return to step S501.
And S503, controlling the tractor and the motor of the washing machine to be closed.
And S504, water is fed to the set water level.
And S505, washing for a preset time such as 1 minute.
And S506, controlling the washing machine to carry out balance washing.
And S507, judging whether the water drainage is finished. If yes, returning to the step S501; if not, step S507 is executed next. It should be noted that steps S503 to S507 are the automatic calibration process of the washing machine.
And S508, judging whether the preset time set by the dehydration program is reached. If so, ending the dehydration program; if not, return to step S501.
In a single dehydration process, when the unbalanced state of the washing machine cannot be automatically corrected through the above steps S503 to S507, it is also possible to judge whether the number of times the washing machine has the tub collision phenomenon reaches a preset number of times through the controller 30, and control the washing machine to send out an alarm prompt message, for example, an audible and visual alarm prompt message, when the number of times the washing machine has the tub collision phenomenon reaches the preset number of times. The preset number of times may be set according to actual conditions, for example, three times.
As shown in fig. 6, the flow chart of the process of the third tub collision phenomenon of the washing machine according to the embodiment of the present invention may include the following steps:
s601, a single dehydration program is executed.
S602, judging whether a barrel collision phenomenon occurs for three times. If yes, go to step S603; if not, step S604 is performed.
And S603, sending out alarm prompt information.
And S604, automatically correcting the unbalance.
And S605, judging whether the alarm prompt is released or not through the opening and closing of the door. If yes, returning to the step S601; if not, return to step S603.
S606, judging whether the dehydration time is reached. If yes, ending the execution; if not, return to step S601.
It should be noted that, in the embodiment of the present invention, parameters of each component in fig. 3 may be set according to actual needs, for example, the first resistor R1 may be 150 ohms, the second resistor R2 may be 5.6K ohms, the third resistor R3 may be 4.7K ohms, the fourth resistor R4 may be 150 ohms, and the first capacitor C1 may be 0.1 uF.
In summary, according to the tub collision detecting apparatus of the washing machine of the embodiment of the present invention, the photoelectric coupling detecting assembly includes a first coupling element disposed at an outer side of the inner tub of the washing machine and a second coupling element disposed at an inner side of the cabinet of the washing machine, the first coupling element and the second coupling element perform signal transmission through photoelectric coupling, the detecting circuit generates a detecting signal according to a coupling condition between the first coupling element and the second coupling element, and the controller determines whether the tub collision phenomenon occurs in the washing machine according to the detecting signal. The device can accurately detect the barrel collision phenomenon of the washing machine, has high reliability, is convenient for taking corresponding measures in time when the barrel collision phenomenon of the washing machine occurs, effectively ensures the normal operation of the washing machine, and can prolong the service life of the washing machine.
Based on the above embodiment, the present invention further provides a washing machine 1000.
Fig. 7 is a block schematic view of a washing machine according to an embodiment of the present invention. As shown in fig. 7, a washing machine 1000 according to an embodiment of the present invention may include the tub collision detecting apparatus 100 of the washing machine described above.
It should be noted that details not disclosed in the washing machine 1000 according to the embodiment of the present invention refer to details disclosed in the tub collision detecting device 1000 of the washing machine according to the embodiment of the present invention, and detailed descriptions thereof are omitted here.
According to the washing machine provided by the embodiment of the invention, the tub collision detection device of the washing machine can accurately detect the tub collision phenomenon, and has high reliability, so that corresponding measures can be taken in time when the tub collision phenomenon occurs, normal operation is effectively ensured, and the service life can be prolonged.
Fig. 8 is a flowchart of a tub collision detection method of a washing machine according to an embodiment of the present invention.
In the embodiment of the invention, a first coupling element can be arranged outside the inner tub of the washing machine, a second coupling element can be arranged inside the box body of the washing machine, the second coupling element is matched with the first coupling element, and the first coupling element and the second coupling element are in photoelectric coupling for signal transmission. The first coupling element may be a light emitting diode, and the second coupling element may be a phototransistor.
As shown in fig. 8, the method for detecting tub collision of a washing machine according to an embodiment of the present invention may include the following steps:
and S1, generating a detection signal according to the coupling condition between the first coupling element and the second coupling element.
In one embodiment of the present invention, the light emitting diode is driven to emit light, wherein the photo transistor generates a high level signal when receiving light emitted from the light emitting diode, and generates a low level signal when the photo transistor does not receive light emitted from the light emitting diode.
It can be understood that the user can selectively control the washing machine to perform washing and/or dewatering process according to the requirement, and the inner tub loaded with the load of the washing machine is in the working state of rotating intermittently or always when the washing machine performs the washing and/or dewatering process. In the process of rotating the inner barrel of the washing machine, a high level signal can be sent out by the controller to drive the light emitting diode to emit light, if the light emitting diode is aligned with the phototriode, the phototriode can receive the light signal sent out by the light emitting diode, then the phototriode is conducted, and a high level detection signal can be generated by the detection circuit. If the light emitting diode deviates from the phototriode, the phototriode does not receive the light signal emitted by the light emitting diode, and then the phototriode is not conducted, and a low-level detection signal can be generated by the detection circuit.
And S2, judging whether the washing machine has the phenomenon of tub collision according to the detection signal.
The inner tub of the washing machine may be shaken in different amplitudes during the rotation. If the inner barrel is in a normal state, the light emitting diode and the phototriode have certain alignment time within the time when the inner barrel rotates for one circle, and the time ratio of the high-low level detection signal generated by the detection circuit can be shown as fig. 4 (a). If the inner barrel shakes greatly, such as barrel collision occurs, that is, the inner barrel is in a barrel collision state, the alignment time of the light emitting diode and the phototriode is relatively shortened, the deviation time is relatively prolonged, and the time ratio of the detection circuit generating the high-low level detection signal can be shown as a graph (b) in fig. 4. Therefore, the controller can accurately judge whether the washing machine has the phenomenon of barrel collision according to the duration time of the low level signal, so that corresponding measures can be taken in time when the washing machine has the phenomenon of barrel collision, the normal operation of the washing machine is effectively ensured, and the service life of the washing machine can be prolonged.
Corresponding measures are taken respectively aiming at the unbalanced operation state of the washing machine and the phenomenon of three times of tub collision.
In the dehydration process of the washing machine, whether the tub collision phenomenon occurs is judged. If the washing machine has the phenomenon of barrel collision, controlling the tractor and the motor of the washing machine to be closed, controlling the washing machine to feed water to a set water level, washing for 1 minute, and controlling the washing machine to carry out balanced washing so as to correct the unbalanced operation state of the washing machine. After correcting the unbalanced operation state of the washing machine, judging whether the water drainage is finished, if so, executing a dehydration program; if not, then the draining is completed. After the drainage is finished, judging whether the set time of the dehydration program is reached, if so, finishing the dehydration program; if not, then a drain procedure is performed.
In a single dehydration process, when the unbalanced state of the washing machine can not be corrected through balanced washing, whether the frequency of the tub collision phenomenon of the washing machine reaches a preset frequency, such as three times, can be judged, and when the frequency of the tub collision phenomenon of the washing machine does not reach the preset frequency, the washing machine is controlled to execute unbalanced automatic correction; when the frequency of the tub collision phenomenon of the washing machine reaches the preset frequency, the washing machine is controlled to send alarm prompt information such as sound and light alarm prompt, a user can release the alarm prompt through opening and closing a door, then whether the alarm prompt is released is judged, if yes, then a dewatering program is executed, and if not, the alarm prompt information is continuously sent to remind the user that the washing machine is in the tub collision phenomenon.
According to the method for detecting the tub collision of the washing machine of the embodiment of the invention, firstly, a detection signal is generated according to the coupling condition between the first coupling element and the second coupling element, and then whether the tub collision phenomenon occurs in the washing machine is judged according to the detection signal. The method can accurately detect the tub collision of the washing machine, has high reliability, is convenient for taking corresponding measures in time when the tub collision of the washing machine occurs, effectively ensures the normal operation of the washing machine, and can prolong the service life of the washing machine.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of 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.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. 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 present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
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 (13)
1. A tub detection device that hits of washing machine which characterized in that includes:
the photoelectric coupling detection assembly comprises a first coupling element and a second coupling element, the first coupling element is arranged outside an inner barrel of the washing machine, the second coupling element is arranged inside a box body of the washing machine and matched with the first coupling element, and the first coupling element and the second coupling element are in photoelectric coupling to transmit signals;
a detection circuit connected to the second coupling element, the detection circuit being configured to generate a detection signal according to a coupling condition between the first coupling element and the second coupling element,
during the rotation of the inner tub of the washing machine, the detection circuit generates a high level detection signal if the first coupling element is aligned with the second coupling element, and generates a low level detection signal if the first coupling element is misaligned with the second coupling element;
the controller is connected with the detection circuit and used for judging whether the washing machine has a barrel collision phenomenon according to the detection signal,
wherein, compared with the normal state of the inner barrel, if the inner barrel has a barrel collision phenomenon, the time for generating the high-level detection signal by the detection circuit is relatively shortened, and the time for generating the low-level detection signal by the detection circuit is relatively prolonged.
2. The apparatus of claim 1, wherein the first coupling element is a light emitting diode, and the second coupling element is a phototransistor.
3. The tub collision detecting device of a washing machine according to claim 2, wherein a collector of the photo transistor is connected to an anode of the light emitting diode and then connected to a preset power source, wherein the detecting circuit includes:
one end of the first resistor is connected with the emitting electrode of the phototriode, and the other end of the first resistor is connected with the controller;
one end of the second resistor is connected with one end of the first resistor, and the other end of the second resistor is grounded;
the anode of the first diode is connected with the other end of the first resistor, and the cathode of the first diode is connected to the preset power supply;
the cathode of the second diode is connected with the anode of the first diode, and the anode of the second diode is grounded;
and one end of the first capacitor is connected with the cathode of the second diode, and the other end of the first capacitor is grounded.
4. The tub collision detecting apparatus of a washing machine according to claim 3, further comprising:
the driving circuit is respectively connected with the cathode of the light-emitting diode and the controller and is used for driving the light-emitting diode to emit light under the control of the controller,
the detection circuit generates a high level signal when the phototriode receives light emitted by the light emitting diode, and generates a low level signal when the phototriode does not receive the light emitted by the light emitting diode.
5. The tub collision detecting apparatus of a washing machine according to claim 4, wherein the driving circuit includes:
one end of the third resistor is connected with the controller;
one end of the fourth resistor is connected with the cathode of the light-emitting diode;
and the base electrode of the first triode is connected with the other end of the third resistor, the collector electrode of the first triode is connected with the other end of the fourth resistor, and the emitting electrode of the first triode is grounded.
6. The tub collision sensing apparatus of a washing machine as claimed in claim 5, wherein the controller controls the tractor and the motor of the washing machine to be turned off and controls the washing machine to perform a balance washing to correct an unbalanced operation state of the washing machine if the tub collision occurs in the washing machine during the dehydration of the washing machine.
7. The apparatus as claimed in claim 6, wherein the controller is further configured to determine whether the number of times the washing machine has collided with the tub reaches a preset number of times, and control the washing machine to send an alarm notification when the number of times the washing machine has collided with the tub reaches the preset number of times.
8. A washing machine characterized by comprising the tub collision detecting device of the washing machine according to any one of claims 1 to 7.
9. A tub collision detection method of a washing machine, characterized in that a first coupling element is arranged outside an inner tub of the washing machine, a second coupling element is arranged inside a cabinet of the washing machine, the second coupling element is matched with the first coupling element, and the first coupling element and the second coupling element are photoelectrically coupled for signal transmission, the tub collision detection method comprising the steps of:
generating a detection signal according to a coupling condition between the first coupling element and the second coupling element, the detection circuit generating a high level detection signal if the first coupling element is aligned with the second coupling element and generating a low level detection signal if the first coupling element is misaligned with the second coupling element during rotation of the inner tub of the washing machine;
judging whether the washing machine has a barrel collision phenomenon according to the detection signal,
wherein, compared with the normal state of the inner barrel, if the inner barrel has a barrel collision phenomenon, the time for generating the high-level detection signal by the detection circuit is relatively shortened, and the time for generating the low-level detection signal by the detection circuit is relatively prolonged.
10. The method of claim 9, wherein the first coupling element is a light emitting diode and the second coupling element is a phototransistor.
11. The tub collision detecting method of a washing machine according to claim 10, further comprising: the light-emitting diode is driven to emit light,
the light emitting diode is used for emitting light, the phototriode generates a high level signal when receiving the light emitted by the light emitting diode, and the phototriode generates a low level signal when not receiving the light emitted by the light emitting diode.
12. The tub collision detecting method of a washing machine as claimed in claim 11, wherein if the tub collision occurs in the washing machine during the dehydration of the washing machine, the tractor and the motor of the washing machine are controlled to be turned off, and the washing machine is controlled to perform the balance washing to correct the unbalanced operation state of the washing machine.
13. The tub collision detecting method of a washing machine according to claim 12, further comprising:
judging whether the frequency of the tub collision phenomenon of the washing machine reaches a preset frequency or not, and controlling the washing machine to send out alarm prompt information when the frequency of the tub collision phenomenon of the washing machine reaches the preset frequency.
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| CN108708135B (en) * | 2018-04-11 | 2022-10-21 | 青岛海尔洗衣机有限公司 | Washing control method and washing machine |
| CN109183352B (en) * | 2018-10-24 | 2022-08-05 | 天津海尔洗涤电器有限公司 | Washing apparatus and control method thereof |
| CN111764101B (en) * | 2019-03-13 | 2023-04-21 | 青岛海尔洗衣机有限公司 | Balance ring liquid leakage detection method and device and washing machine |
| CN113046999A (en) * | 2019-12-26 | 2021-06-29 | 青岛海尔洗衣机有限公司 | Washing apparatus and dewatering method thereof |
| CN111118819A (en) * | 2019-12-27 | 2020-05-08 | 无锡飞翎电子有限公司 | Rinsing treatment method, rinsing treatment device and clothes treatment device |
| CN113818202A (en) * | 2020-06-18 | 2021-12-21 | 青岛海尔洗衣机有限公司 | Clothes treatment equipment, operation method thereof and storage medium |
| CN114941230A (en) * | 2022-06-30 | 2022-08-26 | 海信冰箱有限公司 | Washing machine and control method thereof |
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