Washing machine control method and washing machine

Abstract

The invention relates to the technical field of washing, in particular to a washing machine control method and a washing machine, and aims to solve the problem that small-amplitude and specific-direction shaking cannot be detected during barrel collision detection of an existing washing machine. In order to achieve the purpose, the washing machine comprises a box body, a drum assembly and a motor, the drum assembly and the motor are arranged in the box body, a capacitance induction circuit is arranged on the inner wall of the box body, and a first induction pole piece is arranged at the position, corresponding to the capacitance induction circuit, of the outer wall of the drum assembly; the control method comprises the following steps: acquiring an initial signal value and an actual signal value of the capacitive sensing circuit; calculating a signal value difference value between the initial signal value and the actual signal value; and selectively adjusting the operation parameters of the motor according to the difference value of the signal values. According to the invention, the shaking condition of the outer barrel of the washing machine can be detected in a non-contact induction mode, small-amplitude shaking can be detected, and the shaking trend can be estimated.

Description

Technical Field

[0001] The present invention relates to the technical field of washing, and in particular provides a control method for a washing machine and a washing machine. Background Art

[0002] Washing machines are one of the household appliances commonly used in people's daily lives. When the washing machine is in use, when the clothes are seriously overloaded, the outer drum will shake greatly, and even hit the washing machine.

[0003] Most of the existing washing machines install a safety detection swing rod between the washing machine outer barrel and the cabinet, detect the switch signal after the swing rod safety switch is hit, and then transmit it to the control unit to control the working process of the washing machine.

[0004] However, the above detection method relies on the impact of a physical rod. Due to limitations such as the position and deformation strength of the physical rod, it can only detect relatively large shaking, but cannot detect small shaking or shaking in a specific direction.

[0005] Therefore, this field needs a new technical solution to solve the above problems. Summary of the invention

[0006] The present invention aims to solve the above technical problem, that is, to solve the problem that the existing washing machine cannot detect small-amplitude and specific-direction shaking during drum collision detection.

[0007] In a first aspect, the present invention provides a control method for a washing machine, the washing machine comprising a housing, a drum assembly arranged in the housing, and a motor, the driving end of the motor being connected to the drum assembly, a capacitive sensing circuit being arranged on the inner wall of the housing, a first sensing electrode being arranged on the outer wall of the drum assembly at a position corresponding to the capacitive sensing circuit, and when the drum assembly shakes, the position between the first sensing electrode and the capacitive sensing circuit changes relative to each other, thereby causing a change in a signal value output by the capacitive sensing circuit; the control method comprises: obtaining an initial signal value and an actual signal value of the capacitive sensing circuit; calculating a signal value difference between the initial signal value and the actual signal value; and selectively adjusting the operating parameters of the motor according to the size of the signal value difference.

[0008] In a specific implementation of the control method of the above-mentioned washing machine, the capacitive sensing circuit includes a touch chip and a second sensing electrode, the first sensing electrode is communicatively connected to the first signal end of the touch chip, and the second sensing electrode is communicatively connected to the second signal end of the touch chip; "the signal value output by the capacitive sensing circuit" refers to the mutual inductance signal value output by the touch chip according to the signal values ​​respectively fed back by the first sensing electrode and the second sensing electrode.

[0009] In a specific implementation of the control method of the above-mentioned washing machine, a plurality of second sensing electrodes are provided and arranged in a matrix, and the plurality of second sensing electrodes are respectively communicatively connected to the second signal end of the touch chip; "the signal value output by the capacitive sensing circuit" refers to a plurality of mutual inductance signal values ​​output by the touch chip based on a plurality of signal values ​​respectively fed back by the first sensing electrode and a plurality of the second sensing electrodes.

[0010] In a specific implementation of the control method of the above-mentioned washing machine, the capacitive sensing circuit includes a touch chip and a second sensing electrode, the second sensing electrode is communicatively connected to the second signal end of the touch chip, and the first sensing electrode is grounded; "the signal value output by the capacitive sensing circuit" refers to the self-inductance signal value output by the touch chip according to the signal value fed back by the second sensing electrode.

[0011] In a specific implementation of the control method of the above-mentioned washing machine, a plurality of second sensing electrodes are provided and arranged in a matrix, and the plurality of second sensing electrodes are respectively communicatively connected to the second signal end of the touch chip; "the signal value output by the capacitive sensing circuit" refers to a plurality of self-inductance signal values ​​output by the touch chip based on the plurality of signal values ​​fed back by the plurality of second sensing electrodes.

[0012] In a specific implementation of the above-mentioned washing machine control method, the step of "calculating the signal value difference between the initial signal value and the actual signal value" specifically includes: first calculating a plurality of signal value differences between a plurality of the initial signal values ​​and a corresponding plurality of the actual signal values; and determining the maximum signal value difference among the plurality of signal value differences as the signal value difference between the initial signal value and the actual signal value.

[0013] In a specific implementation of the control method of the above-mentioned washing machine, the step of "selectively adjusting the operating parameters of the motor according to the size of the signal value difference" specifically includes: when the signal value difference is higher than a first preset signal value difference, adjusting the operating parameters of the motor; when the signal value difference is higher than a second preset signal value difference, controlling the motor to stop, and correcting the operating parameters of the motor before re-controlling the motor to operate; wherein, the first preset signal value difference is smaller than the second preset signal value difference.

[0014] In a specific implementation of the control method of the above-mentioned washing machine, the step of "adjusting the working parameters of the motor" specifically includes: obtaining the actual rotational speed of the motor; determining the operating section of the motor according to the actual rotational speed; when the motor is in the first operating section, increasing the rotational speed or acceleration of the motor; when the motor is in the second operating section, reducing the rotational speed or acceleration of the motor; wherein the first operating section includes a resonance section, and the second operating section includes a starting section, a low-speed section, and a high-speed section.

[0015] In a specific implementation of the above-mentioned washing machine control method, the step of "selectively adjusting the operating parameters of the motor according to the size of the difference" further specifically includes: when the number of corrections is higher than the preset number of corrections, controlling the washing machine to issue an alarm reminder.

[0016] In a second aspect, the present invention further provides a washing machine, comprising a controller, wherein the controller is configured to execute the control method described above.

[0017] When adopting the above technical solution, by setting up a capacitive sensing circuit and a first sensing electrode, a contactless sensing method can be used to detect the shaking of the washing machine drum assembly. Compared with the contact detection method, it can detect small shaking and also predict the shaking trend, so that the operating parameters of the motor can be adjusted more accurately to reduce the shaking of the outer drum and reduce noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0019] Figure 1 It is a schematic diagram of the installation position of the capacitive sensing circuit and the first sensing electrode of the present invention in the washing machine;

[0020] Figure 2 is a working principle diagram of a capacitive sensing circuit and a first sensing electrode according to a first embodiment of the present invention;

[0021] Figure 3 is a working principle diagram of a capacitive sensing circuit and a first sensing electrode according to a second embodiment of the present invention;

[0022] Figure 4 is a working principle diagram of a capacitive sensing circuit and a first sensing electrode according to a third embodiment of the present invention;

[0023] Figure 5 is a working principle diagram of a capacitive sensing circuit and a first sensing electrode according to a fourth embodiment of the present invention;

[0024] Figure 6 It is a flow chart of the main steps of the control method of the washing machine of the present invention;

[0025] Figure 7 It is a distribution diagram of the operating sections of the motor in the present invention;

[0026] Figure 8 is a possible complete step flow chart of the control method of the washing machine of the present invention;

[0027] List of reference numerals:

[0028] 1. Box body; 2. Outer tube; 3. Capacitive sensing circuit; 31. Touch chip; 32. Second sensing electrode; 4. First sensing electrode. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not used to limit the scope of protection of the present invention. The washing machine of the present application can be a pulsator washing machine or a drum washing machine. For the convenience of description, the following embodiments all take a pulsator washing machine as an example. Of course, the technical solution of the present invention is not limited to this. The control method can obviously also be applied to other clothing processing equipment such as a washer-dryer and a washer-dryer. This change does not deviate from the principle and scope of the present invention. Those skilled in the art can make adjustments to it as needed to adapt to specific application scenarios.

[0030] It should be noted that in the description of the present invention, although the various steps of the control method of the present invention are described in this application in a specific order, these orders are not restrictive. Without departing from the basic principles of the present invention, those skilled in the art can perform the steps in a different order.

[0031] Embodiment 1

[0032] See first Figure 1 , which is a schematic diagram of the installation position of the capacitive sensing circuit 3 and the first sensing electrode 4 in the washing machine of the present invention. Figure 1 As shown, the washing machine includes a housing 1, a drum assembly and a motor (not shown in the figure) arranged in the housing 1, wherein the drum assembly includes an outer drum 2, an inner drum (not shown in the figure) and a motor, the inner drum is rotatably arranged in the outer drum 2, the driving end of the motor is connected to the inner drum, a capacitive sensing circuit 3 is arranged on the inner wall of the housing 1, and a first sensing electrode 4 is arranged on the outer wall of the outer drum 2 at a position corresponding to the capacitive sensing circuit 3, that is, the capacitive sensing circuit 3 and the first sensing electrode 4 are arranged in pairs, and are arranged in at least one of the front or rear side, left side or right side, and lower side of the washing machine housing 1. When the outer drum 2 shakes, the position between the first sensing electrode 4 and the capacitive sensing circuit 3 will change relatively, thereby causing the signal value output by the capacitive sensing circuit 3 to change.

[0033] Exemplarily, a capacitive sensing circuit 3 is provided on the front or rear side, the left or right side, and the lower side of the box 1. Accordingly, the first sensing electrode 4 is provided on the outer wall of the outer tube 2 and corresponds to the setting position of the capacitive sensing circuit 3. In this way, according to the change of the signal value output by the capacitive sensing circuit 3 in different directions, not only can the shaking of the outer tube 2 be known, but also the movement trend of the shaking of the outer tube 2 can be known, so that corresponding adjustments can be made more accurately. Specifically, when the capacitive sensing circuit 3 and the first sensing electrode 4 are provided on the front or rear side, according to the change of the output signal value of the capacitive sensing circuit 3, it can be known that the outer tube 2 shakes in the front and rear directions in the box 1. When the capacitive sensing circuit 3 and the first sensing electrode 4 are provided on the left or right side, according to the change of the output signal value of the capacitive sensing circuit 3, it can be known that the outer tube 2 changes in the left and right directions in the box 1. When the capacitive sensing circuit 3 and the first sensing electrode 4 are provided on the lower side, according to the change of the output signal value of the capacitive sensing circuit 3, it can be known that the outer tube 2 changes in the upper and lower directions in the box 1.

[0034] It should be noted that, in addition to the structure of "outer cylinder + inner cylinder" described above, the cylinder assembly may also include only the inner cylinder, and accordingly, the first induction electrode is arranged on the outer wall of the inner cylinder.

[0035] Then see Figure 2 , which is a working principle diagram of the capacitance sensing circuit 3 and the first sensing electrode 4 of this embodiment, as shown Figure 2 As shown, the capacitive sensing circuit 3 includes a touch chip 31 and a second sensing electrode 32, the first sensing electrode 4 is communicatively connected to the first signal end of the touch chip 31, the second sensing electrode 32 is communicatively connected to the second signal end of the touch chip 31, the first sensing electrode 4 and the second sensing electrode 32 adopt a mutual induction mode, and the touch chip 31 can obtain a mutual induction signal value according to the signal values ​​respectively fed back by the first sensing electrode 4 and the second sensing electrode 32. Among them, the "signal value output by the capacitive sensing circuit 3" refers to the mutual induction signal value output by the touch chip 31 according to the signal values ​​respectively fed back by the first sensing electrode 4 and the second sensing electrode 32.

[0036] It should be noted that the first sensing electrode 4 and the second sensing electrode 32 can be a structure covered with copper on a PCB board, a structure covered with a metal sheet on a PCB board, or a structure directly using a metal sheet, and those skilled in the art will not limit this.

[0037] See below Figure 6 , which is a flow chart of the main steps of the control method of the washing machine of the present invention. Figure 6 As shown, the control method of the present invention includes:

[0038] S1, obtaining an initial signal value and an actual signal value of a capacitance sensing circuit 3;

[0039] S2, calculating the signal value difference between the initial signal value and the actual signal value;

[0040] S3, selectively adjusting the operating parameters of the motor according to the size of the signal value difference.

[0041] In step S3, the step of “selectively adjusting the operating parameters of the motor according to the magnitude of the signal value difference” specifically includes:

[0042] S31, when the signal value difference is higher than the first preset signal value difference, adjusting the operating parameters of the motor;

[0043] S32, when the signal value difference is higher than the second preset signal value difference, the motor is controlled to stop, and the motor operation parameters are corrected before the motor is controlled to operate again;

[0044] The first preset signal value difference is smaller than the second preset signal value difference.

[0045] Step S3 further comprises:

[0046] S33, when the number of corrections is higher than the preset number of corrections, the washing machine is controlled to issue an alarm.

[0047] In the above steps, when the signal value in one or more directions changes and the signal value difference is higher than the first preset signal value difference, it indicates that the shaking amplitude of the outer drum 2 is too large. At this time, it is necessary to adjust the operating parameters of the motor in time to reduce the shaking of the outer drum 2, thereby reducing noise. When the signal value in one or more directions changes and the signal value difference is higher than the second preset signal value difference, it indicates that the shaking amplitude of the outer drum 2 exceeds the limit of adjusting the operating parameters of the motor. At this time, it is necessary to control the motor to stop, and re-correct and set the operating parameters of the motor before re-controlling the motor to operate according to the newly set operating parameters. If the signal value difference in one or more directions is still higher than the second preset signal value difference after the motor has re-corrected and set its operating parameters, and exceeds the set number of times, the washing machine will issue an alarm to remind you to check the fault in time.

[0048] In step S31, the step of “adjusting the working parameters of the motor” specifically includes:

[0049] S311, obtaining the actual speed of the motor;

[0050] S312, determining the operating section of the motor according to the actual speed;

[0051] S313, when the motor is in the first operation section, increasing the speed or acceleration of the motor;

[0052] S314, when the motor is in the second operation section, reducing the rotation speed or acceleration of the motor;

[0053] The first operating section includes a resonance section, and the second operating section includes a start-up section, a low-speed section and a high-speed section.

[0054] The running sections of the motor include the starting section, low-speed section, resonance section and high-speed section. The specific distribution is as follows: Figure 7 Specifically, when the signal value difference is higher than the first preset signal value difference, and the motor speed is in the resonance section, the motor speed or acceleration is increased to allow the motor to quickly skip the resonance section to avoid the inner cylinder and the outer cylinder 2 from continuing to resonate. When the signal value difference is higher than the first preset signal value difference, and the motor speed is in any of the starting section, the low-speed section, and the high-speed section, the motor speed or acceleration is reduced to avoid shaking of the outer cylinder 2 due to excessive motor speed.

[0055] In addition, when the signal value in one or more directions changes but the signal value difference is lower than the first preset signal value difference, it indicates that the outer cylinder 2 shakes, but the amplitude is not large. At this time, the operating parameters of the motor can be adjusted in real time as needed to reduce the shaking of the outer cylinder 2.

[0056] Embodiment 2

[0057] The difference from the first embodiment is that the following Figure 3 , which is a working principle diagram of the capacitance sensing circuit 3 and the first sensing electrode 4 of this embodiment, as shown Figure 3 As shown, the capacitive sensing circuit 3 includes a touch chip 31 and a plurality of second sensing electrodes 32 arranged in a matrix, the first sensing electrode 4 is connected to the first signal end of the touch chip 31 for communication, and the plurality of second sensing electrodes 32 are connected to the second signal end of the touch chip 31 for communication, and the first sensing electrode 4 and the second sensing electrode 32 adopt a mutual induction mode. The touch chip 31 can obtain a plurality of mutual induction signal values ​​according to the plurality of signal values ​​respectively fed back by the first sensing electrode 4 and the plurality of second sensing electrodes 32. Among them, the "signal value output by the capacitive sensing circuit 3" refers to the plurality of mutual induction signal values ​​output by the touch chip 31 according to the plurality of signal values ​​respectively fed back by the first sensing electrode 4 and the plurality of second sensing electrodes 32.

[0058] In the above structure, by providing a plurality of second sensing pole pieces 32 arranged in a matrix, when the outer cylinder 2 shakes, a plurality of changing signal values ​​can be obtained in the same direction, and the position corresponding to the change in the direction of the output signal value can be obtained, thereby obtaining the shaking trajectory of the outer cylinder 2 in the box body 1, and then the shaking trend of the outer cylinder 2 can be estimated. Exemplarily, taking the case where the capacitive sensing circuit 3 is arranged on the left side of the box body 1 as an example, correspondingly, the first sensing pole piece 4 is arranged on the outer wall of the outer cylinder 2 at the position corresponding to the capacitive sensing circuit 3, and a plurality of second sensing pole pieces 32 are arranged in a matrix on the left side of the box body 1. When the outer cylinder 2 shakes, the shaking trajectory of the outer cylinder 2 can be obtained according to the position corresponding to the output changing signal value, so that it can be known whether the outer cylinder 2 shakes to the left front or the left rear, for example, and then the operating parameters of the motor can be adjusted more accurately to reduce the shaking of the outer cylinder 2, thereby reducing noise.

[0059] The control method of this embodiment is different from that of the first embodiment in that:

[0060] In step S2, the step of "calculating the signal value difference between the initial signal value and the actual signal value" specifically includes:

[0061] S21, first calculating a plurality of signal value differences between a plurality of initial signal values ​​and a plurality of corresponding actual signal values;

[0062] S22, determining a maximum signal value difference among a plurality of signal value differences as a signal value difference between an initial signal value and an actual signal value.

[0063] Specifically, in step S21, when the outer cylinder 2 shakes, the capacitive sensing circuit 3 outputs a plurality of changing signal values, i.e., a plurality of signal value differences, and by establishing an XYZ coordinate system, the positional relationship corresponding to the plurality of signal value differences on the coordinate system is obtained, thereby obtaining the shaking trajectory of the outer cylinder 2 in the box body 1, and further being able to predict the shaking trend of the outer cylinder 2.

[0064] In step S22, the maximum signal value difference is determined according to the multiple signal value differences, and the difference is used as the critical value of the shaking trajectory of the outer cylinder 2, and the critical value is compared with the first preset signal value difference and the second preset signal value difference respectively to adjust the operating parameters of the motor in real time.

[0065] Embodiment 3

[0066] The difference from the first embodiment is that the following Figure 4 , which is a working principle diagram of the capacitance sensing circuit 3 and the first sensing electrode 4 of this embodiment, as shown Figure 4As shown, the capacitive sensing circuit 3 includes a touch chip 31 and a second sensing electrode 32, the second sensing electrode 32 is communicatively connected to the second signal end of the touch chip 31, the first sensing electrode 4 is grounded, the first sensing electrode 4 and the second sensing electrode 32 adopt a self-sensing mode, and the touch chip 31 can obtain a self-sensing signal value according to the signal value fed back by the second sensing electrode 32. Among them, the "signal value output by the capacitive sensing circuit 3" refers to the self-sensing signal value output by the touch chip 31 according to the signal value fed back by the second sensing electrode 32.

[0067] Embodiment 4

[0068] The difference from the first embodiment is that the following Figure 5 , which is a working principle diagram of the capacitance sensing circuit 3 and the first sensing electrode 4 of this embodiment, as shown Figure 5 As shown, the capacitive sensing circuit 3 includes a touch chip 31 and a plurality of second sensing electrodes 32 arranged in a matrix, the plurality of second sensing electrodes 32 are respectively connected to the second signal end of the touch chip 31 for communication, the first sensing electrode 4 is grounded, the first sensing electrode 4 and the plurality of second sensing electrodes 32 adopt a self-sensing mode, and the touch chip 31 can obtain a plurality of self-sensing signal values ​​according to the signal values ​​fed back by the plurality of second sensing electrodes 32. Among them, the "signal value output by the capacitive sensing circuit 3" refers to a plurality of self-sensing signal values ​​output by the touch chip 31 according to the plurality of signal values ​​fed back by the plurality of second sensing electrodes 32.

[0069] The control method of this embodiment is the same as the control method of the second embodiment, and will not be described again here.

[0070] like Figure 8 As shown, a possible complete process of the control method of the washing machine of the present invention is:

[0071] S101, obtaining an initial signal value and an actual signal value of a capacitance sensing circuit 3;

[0072] S102, calculating the signal value difference between the initial signal value and the actual signal value;

[0073] S103, comparing whether the signal value difference is higher than a first preset signal value difference;

[0074] If yes, execute step S104;

[0075] If not, run normally or execute step S104;

[0076] S104, obtaining the actual speed of the motor;

[0077] S105, determining the operating section of the motor according to the actual speed;

[0078] S106, when the motor is in the first operation section, increasing the speed or acceleration of the motor;

[0079] S107, when the motor is in the second operation section, reducing the rotation speed or acceleration of the motor;

[0080] S108, comparing whether the signal value difference is higher than a second preset signal value difference;

[0081] If yes, execute step S109;

[0082] S109, controlling the motor to stop, and correcting the motor's operating parameters before re-controlling the motor to run;

[0083] S110, whether the number of corrections is higher than the preset number of corrections;

[0084] If yes, execute step S120;

[0085] If not, execute step S109;

[0086] S120, controlling the washing machine to issue an alarm reminder.

[0087] The above-mentioned implementation mode and various extended embodiments, by setting the capacitive sensing circuit 3 and the first sensing electrode 4, can realize a contactless sensing method to detect the shaking of the outer drum 2 of the washing machine. Compared with the contact detection method, it can detect small-amplitude shaking and also predict the shaking trend, so as to more accurately adjust the operating parameters of the motor to reduce the shaking of the outer drum 2 and reduce noise.

[0088] Based on the above embodiments, the present invention further provides a washing machine, comprising a controller, wherein the controller is configured to execute the above control method.

[0089] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A method for controlling a washing machine, characterized in that: The washing machine comprises a housing, a drum assembly and a motor arranged in the housing, wherein a driving end of the motor is connected to the drum assembly, a capacitive sensing circuit is arranged on the inner wall of the housing, and a first sensing electrode is arranged on the outer wall of the drum assembly at a position corresponding to the capacitive sensing circuit, and when the drum assembly shakes, a relative position between the first sensing electrode and the capacitive sensing circuit changes, thereby causing a change in a signal value output by the capacitive sensing circuit; The control method comprises: Obtaining an initial signal value and an actual signal value of the capacitance sensing circuit; Calculating a signal value difference between the initial signal value and the actual signal value; The operating parameters of the motor are selectively adjusted according to the magnitude of the signal value difference.

2. The control method of the washing machine according to claim 1, characterized in that: The capacitive sensing circuit includes a touch chip and a second sensing electrode, wherein the first sensing electrode is communicatively connected to a first signal terminal of the touch chip, and the second sensing electrode is communicatively connected to a second signal terminal of the touch chip; “The signal value output by the capacitive sensing circuit” refers to the mutual inductance signal value output by the touch chip according to the signal values ​​respectively fed back by the first sensing electrode and the second sensing electrode.

3. The control method of the washing machine according to claim 2, characterized in that: The second sensing electrode pieces are provided in plurality and arranged in a matrix, and the plurality of second sensing electrode pieces are respectively connected to the second signal end of the touch chip for communication; “The signal value output by the capacitive sensing circuit” refers to a plurality of mutual inductance signal values ​​output by the touch chip according to a plurality of signal values ​​respectively fed back by the first sensing electrode piece and a plurality of the second sensing electrode pieces.

4. The control method of the washing machine according to claim 1, characterized in that: The capacitive sensing circuit includes a touch chip and a second sensing electrode, the second sensing electrode is communicatively connected to a second signal terminal of the touch chip, and the first sensing electrode is grounded; “The signal value output by the capacitive sensing circuit” refers to the self-inductance signal value output by the touch chip according to the signal value fed back by the second sensing electrode.

5. The control method of the washing machine according to claim 4, characterized in that: The second sensing electrode pieces are provided in plurality and arranged in a matrix, and the plurality of second sensing electrode pieces are respectively connected to the second signal end of the touch chip for communication; “The signal value output by the capacitive sensing circuit” refers to a plurality of self-inductance signal values ​​output by the touch chip according to a plurality of signal values ​​fed back by a plurality of the second sensing electrodes.

6. The control method of the washing machine according to claim 3 or 5, characterized in that: The step of "calculating the signal value difference between the initial signal value and the actual signal value" specifically includes: First, a plurality of signal value differences between a plurality of the initial signal values ​​and a plurality of the corresponding actual signal values ​​are calculated; A maximum signal value difference value among the plurality of signal value differences is determined as a signal value difference value between the initial signal value and the actual signal value.

7. The control method of a washing machine according to any one of claims 1 to 6, characterized in that: The step of "selectively adjusting the operating parameters of the motor according to the magnitude of the signal value difference" specifically includes: When the signal value difference is higher than a first preset signal value difference, adjusting the operating parameters of the motor; When the signal value difference is higher than a second preset signal value difference, the motor is controlled to stop, and the motor is controlled to run again after the operating parameters of the motor are corrected; Among them, the first preset signal value difference is smaller than the second preset signal value difference.

8. The control method of the washing machine according to claim 7, characterized in that: The step of "adjusting the operating parameters of the motor" specifically includes: Obtaining the actual rotation speed of the motor; Determine the operating section of the motor according to the actual rotation speed; When the motor is in the first operation section, increasing the rotation speed or acceleration of the motor; When the motor is in the second operation section, reducing the rotation speed or acceleration of the motor; Wherein, the first operating section includes a resonance section, and the second operating section includes a starting section, a low-speed section and a high-speed section.

9. The control method of the washing machine according to claim 7, characterized in that: The step of "selectively adjusting the operating parameters of the motor according to the size of the difference" further specifically includes: When the number of corrections is higher than a preset number of corrections, the washing machine is controlled to issue an alarm.

10. A washing machine, comprising a controller, characterized in that: The controller is configured to be able to execute the control method according to any one of claims 1 to 9.

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