Control panel and washing machine and eccentricity sensing system control method for washing machine

Abstract

The present application provides a control disc seat, a washing machine and a control method of an eccentricity sensing system of the washing machine. The control disc seat comprises an upper magnet and a detection rod which can form an eccentricity sensing system. The present application also provides a washing machine, wherein an upper magnet and a detection rod are arranged on the control disc seat, and a lower magnet is arranged on the center of a rotating wheel of a pulsator. The detection rod is located in a magnetic field generated by the upper magnet and the lower magnet. Sensors for detecting instantaneous current value I and fluctuation frequency R are arranged at both ends of the detection rod. The present application also provides a control method of an eccentricity sensing system of a washing machine, which is executed on the washing machine provided with the eccentricity sensing system and the control disc seat. The washing machine starts to dehydrate. The dehydration stability Q is determined according to the instantaneous current value I and the fluctuation frequency R generated by the detection rod cutting the magnetic induction lines. The dehydration start speed and acceleration of the washing machine are determined according to the stability level. The above technical scheme and device can ensure the success rate of one-time dehydration and the stable dehydration of the whole machine.

Description

Technical Field

[0001] This invention belongs to the field of washing machines, specifically, it relates to a control panel, a washing machine, and a control method for an eccentric sensing system of the washing machine. Background Technology

[0002] After the washing machine finishes washing, the smoothness of the spin-drying process depends on whether the load inside the drum is even. If the load is uneven, the spin-drying process is prone to imbalance, causing the drum to collide with the machine body. Whether a current washing machine can correct its deviation in time during the spin-drying start depends on whether the mechanical safety switch can activate in time. Due to the uncertainty of eccentricity, the outer drum often hits the machine body but avoids the safety switch, causing the entire machine to shift.

[0003] Chinese patent application No. 201810270940.0 discloses a "washing machine, spin-drying control method, spin-drying control device and storage medium". The bottom of the spin-drying tub is provided with a balance block assembly to balance the eccentricity of the tub before the washing machine executes the spin-drying program; the top of the spin-drying tub is provided with a balance ring to balance the eccentricity of the tub when the washing machine executes the spin-drying program, but it cannot effectively guarantee stable spin-drying.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a control panel, a washing machine, and an eccentric sensing system control method for the washing machine, which can better ensure the smooth dehydration of the whole machine.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0007] A control panel base includes an upper magnet and a probe rod. The probe rod has sensors at both ends for detecting instantaneous current value I and fluctuation frequency R. The probe rod is located in the magnetic field generated by the upper magnet and the lower magnet installed on the washing machine impeller.

[0008] An upper magnet and a lower magnet that can jointly generate a magnetic field, and a probe rod located in the magnetic field. The probe rod has relative motion with the magnetic field, thereby cutting the magnetic field lines. Sensors that detect the instantaneous current value I and the fluctuation frequency R are respectively provided at both ends of the probe rod. The above devices work together to form an eccentric sensing system.

[0009] Utilizing the principle of generating induced current by a conductor cutting a magnetic field, in the closed magnetic field generated by the combined action of the upper and lower magnets, the probe rod has relative motion with the magnetic field, thereby cutting the magnetic field lines and generating an induced current in the probe rod. The instantaneous current value I is obtained by a sensor installed at the end of the probe rod to detect the instantaneous current value I. At the same time, since the current value is not stable, the fluctuation frequency R of the current value also needs to be collected. Therefore, a sensor is also installed at the end of the probe rod to collect the fluctuation frequency R of the induced current.

[0010] The magnetic field is a rotating magnetic field, which can fix the probe rod. This creates a relative motion between the rotating magnetic field and the probe rod. The probe rod, located in the magnetic field, can cut the magnetic field, thereby generating an induced current in the probe rod.

[0011] The control panel is equipped with an upper magnet and a detection rod for the eccentric sensing system. This allows the control panel to serve as a carrier for the eccentric sensing system, enabling its application in washing machines and making the eccentric sensing system a practical application in washing.

[0012] Furthermore, the upper magnet is a magnetic ring or a magnetized coating.

[0013] The upper magnet only needs to generate a magnetic field; therefore, it can be made of either a magnetic ring or a magnetizing coating. The upper magnet can be formed by installing an existing magnetic ring or by designing a spray pattern to apply the magnetizing coating.

[0014] Furthermore, the upper magnet is disposed on the upper cover of the control panel base, or on the control panel base portion surrounding the upper cover.

[0015] Since the control panel base has an opening and closing cover with a large area, the upper magnet can be placed on the cover. This provides sufficient area for installation, and because the cover is a flexible component, its production and installation are relatively flexible. Installing the upper magnet on the cover facilitates overall manufacturing, installation, and subsequent maintenance. Furthermore, since the upper magnet is a magnetic ring or coated with magnetizing material, its size can be arbitrarily set within the cover area, as long as it can generate a magnetic field with the lower magnet and partially or completely cover the probe rod. This allows for a reduction in the size of the magnetic ring or the area of ​​the magnetizing coating, thus reducing costs. Alternatively, the upper magnet can be placed on the control panel base outside the cover—meaning it's still on the base but not on the cover. This arrangement provides better concealment, but requires a larger size due to its location on the outer edge of the cover.

[0016] Furthermore, the probe is located on the control panel base on the periphery of the upper cover, and the probe is suspended and fixed.

[0017] Because the probe needs to cut through the magnetic field, has a certain length, and has sensors at both ends, it needs to be placed on the control panel base outside the top cover. This allows the probe to be partially or completely placed in the magnetic field formed by the upper and lower magnets, and also conceals it to prevent damage during use. The probe is suspended and fixed. This structure serves two purposes: firstly, the magnetic field formed by the upper and lower magnets is downward, requiring the probe to be suspended downward to place it partially or completely within this magnetic field; secondly, its suspension allows it to better vibrate with the outer tub during spin-drying due to uneven load on the inner tub causing it to impact the casing, thus enabling more sensitive acquisition of the induced current fluctuation frequency R.

[0018] The present invention also provides a washing machine, wherein an upper magnet and a probe rod are provided on the control panel base, a lower magnet is provided on the rotating wheel at the center of the impeller, the probe rod is located in the magnetic field jointly generated by the upper magnet and the lower magnet, and sensors for detecting instantaneous current value I and fluctuation frequency R are respectively provided at both ends of the probe rod.

[0019] By installing an upper magnet and a probe rod on the control panel of the washing machine, and a lower magnet on the rotating wheel at the center of the washing machine's pulsator, the upper and lower magnets together form a magnetic field. Since the pulsator rotates during spin-drying, the magnetic field formed by the upper and lower magnets is a rotating magnetic field. The probe rod on the control panel is located within this rotating magnetic field. Therefore, during spin-drying, the probe rod can cut off the magnetic field, inducing a current in the probe rod. Sensors at both ends of the probe rod detect the instantaneous current value I and the fluctuation frequency R. Thus, during the washing machine's spin-drying process, the instantaneous current value I and the fluctuation frequency R of the induced current in the probe rod can be collected, providing a basis for judging the stability of the washing machine's spin-drying process. Based on the stability level, the system determines whether to continue spin-drying and adjusts the acceleration of the spin-drying rotation.

[0020] Furthermore, the washing machine includes the aforementioned control panel base, wherein the upper magnet on the control panel base is a magnetic ring or a magnetized coating. The upper magnet can be optionally located on the upper cover of the control panel base, or on the control panel base portion surrounding the upper cover. The detection rod is located on the control panel base portion surrounding the upper cover and is suspended and fixed in place.

[0021] As mentioned earlier, mounting the upper magnet on the top cover facilitates overall manufacturing, installation, and subsequent maintenance. It also reduces the size of the magnetic ring and the area requiring magnetizing coating, thus lowering costs. Positioning the upper magnet on the control panel around the top cover provides good concealment. The probe rod is also mounted on the control panel around the top cover and is suspended in the air. This is because the magnetic field formed by the upper and lower magnets is downward, requiring the probe rod to be suspended to place it partially or entirely within this magnetic field. Furthermore, its suspension allows it to better respond to vibrations caused by the outer tub impacting the casing during spin-drying due to uneven load on the inner tub, resulting in more sensitive acquisition of the induced current fluctuation frequency R.

[0022] Furthermore, the probe is located on the left or right side of the control panel. Since the washing machine control panel has a control keypad at the front for user convenience and a water inlet valve at the rear, the probe is installed on the left or right side of the control panel to allow for easy installation without being affected by other devices and to allow it to suspend and vibrate with the machine.

[0023] Furthermore, a lower magnet is installed at the top of the impeller at the center of the impeller. This lower magnet is installed at the top of the impeller to better separate the magnetic field generated by the motor coil at the bottom of the impeller.

[0024] This invention also provides a control method for an eccentric sensing system of a washing machine, which is executed on the aforementioned washing machine equipped with an eccentric sensing system and a control panel. When the washing machine begins spin-drying, the spin-drying stability Q is determined based on the instantaneous current value I generated by the probe cutting magnetic field lines and the fluctuation frequency R. Based on the stability level, the starting speed and acceleration of the spin-drying process are determined.

[0025] When the washing machine starts spinning, the impeller at the center rotates with the inner tub. Therefore, the upper magnet installed on the control panel and the lower magnet installed on the impeller together generate a rotating magnetic field. This causes the induced current generated by the probe cutting the magnetic field lines to vary when the inner tub is unbalanced, causing the outer tub to impact the casing and cause vibration. The instantaneous current value I and the fluctuation frequency R of the induced current are different. Therefore, the spin-drying stability Q is determined by the instantaneous current value I and the fluctuation frequency R generated by the probe cutting the magnetic field lines. The spin-drying stability level Q is then used to determine whether the washing machine should start spinning and the acceleration.

[0026] Furthermore, if the dehydration stability Q is less than the set value q, the dehydration acceleration is matched according to the dehydration stability Q; if the dehydration stability Q is greater than the set value q, the dehydration is terminated, water is added again to correct the inner barrel balance, and then the dehydration is restarted.

[0027] By comparing the instantaneous dehydration stability Q with the set value q, it is determined whether to continue or terminate dehydration. If it is determined to continue dehydration, the acceleration of the dehydration rotation is matched according to the instantaneous dehydration stability Q to ensure the success rate of dehydration.

[0028] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0029] This invention discloses a control panel, a washing machine, and a control method for an eccentric sensing system within the washing machine. The control panel includes an upper magnet and a probe rod that form the eccentric sensing system. The invention also provides a washing machine with an upper magnet and a probe rod on the control panel, a lower magnet on a rotating wheel at the center of the impeller, and the probe rod located in the magnetic field generated by the upper and lower magnets. Sensors for detecting instantaneous current value I and fluctuation frequency R are respectively provided at both ends of the probe rod. The invention further provides a control method for the eccentric sensing system of the washing machine, which is executed on the aforementioned washing machine equipped with the eccentric sensing system and control panel. When the washing machine begins spin-drying, the spin-drying stability Q is determined based on the instantaneous current value I generated by the probe cutting magnetic field lines and the fluctuation frequency R. The stability level determines whether the washing machine should initiate spin-drying and its acceleration. Using the above technical solution and device, the success rate of spin-drying in one pass can be ensured, and the entire machine can spin-dry smoothly.

[0030] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0031] The accompanying drawings, as part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0032] Figure 1 This is a schematic diagram of the structure of a control panel base according to the present invention;

[0033] Figure 2 This is a schematic diagram of the installation of a probe rod in a control panel base according to the present invention;

[0034] Figure 3 This is a schematic diagram of the installation of a probe rod in a control panel base according to the present invention;

[0035] Figure 4 This is a schematic diagram of the impeller structure of the washing machine of the present invention.

[0036] Figure 5 This is a schematic diagram illustrating the working principle of the eccentric sensing system of the present invention.

[0037] Figure 6 This is a schematic diagram of a control method for an eccentricity sensing system in a washing machine.

[0038] In the diagram: 1. Control panel base; 2. Top cover; 3. Upper magnet; 4. Detector rod; 41. Sensor for detecting instantaneous current value I; 42. Sensor for detecting fluctuation frequency R; 5. Impeller; 51. Rotary wheel; 6. Magnetic field.

[0039] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0041] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0042] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0043] This invention discloses an eccentric sensing system, including an upper magnet and a lower magnet that can jointly generate a magnetic field, and a probe rod located in the magnetic field. The probe rod has relative motion with the magnetic field, thereby cutting the magnetic field lines. Sensors for detecting instantaneous current value I and fluctuation frequency R are respectively provided at both ends of the probe rod.

[0044] Utilizing the principle of generating induced current by a conductor cutting a magnetic field, in the closed magnetic field generated by the combined action of the upper and lower magnets, the probe rod has relative motion with the magnetic field, thereby cutting the magnetic field lines and generating an induced current in the probe rod. The instantaneous current value I is obtained by a sensor installed at the end of the probe rod to detect the instantaneous current value I. At the same time, since the current value is not stable, the fluctuation frequency R of the current value also needs to be collected. Therefore, a sensor is also installed at the end of the probe rod to collect the fluctuation frequency R of the induced current.

[0045] In this invention, the closed magnetic field generated by the combined action of the upper and lower magnets is a rotating magnetic field.

[0046] The magnetic field is a rotating magnetic field, which can fix the probe rod. This creates a relative motion between the rotating magnetic field and the probe rod. The probe rod, located in the magnetic field, can cut the magnetic field, thereby generating an induced current in the probe rod.

[0047] Combination Figure 1 , 2 As shown in Figures 1 and 3, the present invention also provides a control panel base 1, which includes the upper magnet 3 and the detection rod 4 of the above-mentioned eccentric sensing system.

[0048] In the control panel 1, the upper magnet 3 and the detection rod 4 of the eccentric sensing system are set. In this way, the control panel 1 can serve as a carrier for the eccentric sensing system, so that it can be applied in the washing machine and the eccentric sensing system can be put into practical use in washing.

[0049] The upper magnet 3 is a magnetic ring or a magnetized coating.

[0050] The upper magnet 3 only needs to generate a magnetic field; therefore, it can be made of either a magnetic ring or a magnetizing coating. The upper magnet 3 can be formed by installing an existing magnetic ring or by designing a spray pattern to apply the magnetizing coating.

[0051] The upper magnet 3 is located on the upper cover 2 of the control panel base 1, or on the control panel base 1 portion surrounding the upper cover 2.

[0052] Since the control panel base 1 has an opening and closing upper cover 2, and the upper cover 2 has a large area, the upper magnet 3 can be installed on the upper cover 2 of the control panel base 1. This provides sufficient area for the upper magnet 3 to be installed. Furthermore, since the upper cover 2 is a flexible component, its production and installation are relatively flexible. Installing the upper magnet 3 on the upper cover 2 facilitates overall manufacturing, installation, and subsequent maintenance. Because the upper magnet 3 is installed on the upper cover 2 using a magnetic ring or sprayed magnetizing material, its size can be arbitrarily set within the area of ​​the upper cover 2, as long as it can generate a magnetic field together with the lower magnet and the magnetic field can partially or completely cover the probe rod 4. Therefore, the size of the magnetic ring or the area of ​​the magnetizing coating can be reduced, thereby reducing costs. Alternatively, if the upper magnet 3 is placed on the control panel base 1 outside the upper cover 2, that is, the upper magnet 3 is still on the base but not on the upper cover 2, this arrangement provides better concealment of the upper magnet 3. However, since it is placed on the outside of the upper cover 2, a larger size is required.

[0053] The probe rod 4 is located on the control panel base 1 on the periphery of the upper cover 2, and the probe rod 4 is suspended and fixed, vibrating with the vibration of the whole machine.

[0054] Since the probe rod 4 needs to cut the magnetic field, has a certain length, and has sensors at both ends, it needs to be placed on the control panel base 1 outside the upper cover 2. This allows the probe rod 4 to be partially or completely placed in the magnetic field formed by the upper magnet 3 and the lower magnet, while also concealing it to prevent damage during use. The probe rod 4 is suspended and fixed. This structure serves two purposes: firstly, the magnetic field formed by the upper magnet 3 and the lower magnet is downward, requiring the probe rod 4 to be suspended downward to place it partially or completely within this magnetic field; secondly, because it is suspended, when the inner tub is unbalanced during dehydration, causing the outer tub to impact the casing and vibrate, the probe rod 4 can better vibrate with this vibration, thus more sensitively collecting the fluctuation frequency R of the induced current.

[0055] The present invention also provides a washing machine, wherein an upper magnet 3 and a detection rod 4 are provided on the control panel 1, and a lower magnet is provided on the rotating wheel 51 at the center of the impeller 5, the rotating wheel 51 being able to rotate freely. The detection rod 4 is located in the magnetic field jointly generated by the upper magnet 3 and the lower magnet, and a sensor 41 for detecting the instantaneous current value I and a sensor 42 for detecting the fluctuation frequency R are respectively provided at both ends of the detection rod 4.

[0056] Combination Figure 1 , 2As shown in Figures 3, 4, and 5, an upper magnet 3 and a probe rod 4 are installed on the control panel 1 of the washing machine, and a lower magnet is installed on the rotating wheel 51 at the center of the impeller 5. The upper and lower magnets together form a magnetic field. Because the impeller rotates during spin-drying, the magnetic field formed by the upper and lower magnets is a rotating magnetic field. The probe rod 4 on the control panel 1 is located within this rotating magnetic field. Therefore, during spin-drying, the probe rod 4 can cut off the magnetic field, thus generating an induced current. A sensor 41 for detecting the instantaneous current value I and a sensor 42 for detecting the fluctuation frequency R are respectively installed at both ends of the probe rod 4. Therefore, during spin-drying, the instantaneous current value I and the fluctuation frequency R of the induced current in the probe rod 4 can be collected, providing a basis for judging the stability of the washing machine's spin-drying process. Based on the stability level, the decision to continue spin-drying and the acceleration of the spin-drying rotation can be determined.

[0057] The washing machine includes the aforementioned control panel base 1, wherein the upper magnet 3 installed on the control panel base 1 is a magnetic ring or a magnetized coating. The upper magnet 3 can be optionally installed on the upper cover 2 of the control panel base 1, or on the control panel base 1 portion surrounding the upper cover 2. The detection rod 4 is installed on the control panel base 1 portion surrounding the upper cover 2, and is suspended and fixed in place.

[0058] As mentioned above, installing the upper magnet 3 on the upper cover 2 facilitates overall manufacturing, installation, and subsequent maintenance, and reduces the size of the magnetic ring or the size of the magnetizing coating, thereby reducing costs. Positioning the upper magnet 3 on the control panel base 1 around the upper cover 2 provides good concealment. The probe 4 is positioned on the control panel base 1 around the upper cover 2 and is suspended in the air. This is because the magnetic field formed by the upper and lower magnets is downward, requiring the probe 4 to be suspended downwards to place it partially or entirely within this magnetic field. Furthermore, its suspension allows it to better vibrate with the outer tub during dehydration due to uneven load on the inner tub causing vibration, thus enabling more sensitive acquisition of the induced current fluctuation frequency R.

[0059] The probe rod 4 is located on the left or right side of the control panel 1. Since the control panel of the washing machine has a control keyboard at the front for user convenience and a water inlet valve and other devices at the rear, the probe rod 4 is installed on the left or right side of the control panel 1 so that it can be installed easily and is not affected by other devices, and can be suspended in the air and vibrate with the vibration of the whole machine.

[0060] A lower magnet is installed on top of the rotating wheel 51 at the center of the impeller. This lower magnet is installed on top of the rotating wheel 51 at the center of the impeller to better separate the magnetic field generated by the motor coil at the bottom of the impeller.

[0061] This invention also provides a control method for a washing machine eccentricity sensing system, which is executed on a washing machine equipped with the aforementioned eccentricity sensing system and control panel 1. When the washing machine begins spin-drying, the spin-drying stability Q is determined based on the instantaneous current value I generated by the probe 4 cutting magnetic field lines and the fluctuation frequency R. Based on the stability level, the starting speed and acceleration of the spin-drying process are determined.

[0062] like Figure 6 As shown, when the washing machine starts to spin-dry, the rotating wheel 51 at the center of the washing machine impeller 5 rotates with the inner tub. Therefore, the upper magnet 3 installed on the control panel base 1 and the lower magnet installed on the rotating wheel 51 at the center of the impeller 5 jointly generate a rotating magnetic field. This causes the induced current generated by the probe rod 4 cutting the magnetic field lines to have different instantaneous current values ​​I and fluctuation frequencies R when the load on the inner tub of the washing machine is unbalanced, causing the outer tub to hit the cabinet and cause vibration. Therefore, the spin-drying stability Q is judged based on the instantaneous current value I and fluctuation frequency R generated by the probe rod 4 cutting the magnetic field lines. The spin-drying stability Q is then used to determine whether the washing machine should start the spin-drying speed and acceleration based on the stability level to which the spin-drying stability Q belongs.

[0063] If the dehydration stability Q is less than the set value q, the dehydration acceleration is matched according to the dehydration stability Q; if the dehydration stability Q is greater than the set value q, the dehydration is terminated, water is added again to correct the inner barrel balance, and then the dehydration is restarted.

[0064] By comparing the instantaneous dehydration stability Q with the set value q, it is determined whether to continue or terminate dehydration. If it is determined to continue dehydration, the acceleration of the dehydration rotation is matched according to the instantaneous dehydration stability Q to ensure the success rate of dehydration.

[0065] This invention discloses a control panel, a washing machine, and a control method for an eccentric sensing system within the washing machine. The control panel includes an upper magnet and a probe rod that form the eccentric sensing system. The invention also provides a washing machine with an upper magnet and a probe rod on the control panel, a lower magnet on a rotating wheel at the center of the impeller, and the probe rod located in the magnetic field generated by the upper and lower magnets. Sensors for detecting instantaneous current value I and fluctuation frequency R are respectively provided at both ends of the probe rod. The invention further provides a control method for the eccentric sensing system of the washing machine, which is executed on the aforementioned washing machine equipped with the eccentric sensing system and control panel. When the washing machine begins spin-drying, the spin-drying stability Q is determined based on the instantaneous current value I generated by the probe cutting magnetic field lines and the fluctuation frequency R. The stability level determines whether the washing machine should initiate spin-drying and its acceleration. Using the above technical solution and device, the success rate of spin-drying in one pass can be ensured, and the entire machine can spin-dry smoothly.

[0066] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A control panel base, characterized in that: Includes an upper magnet and a probe rod, with the upper magnet located on the upper cover of the control panel base, or on the control panel base portion surrounding the upper cover; The probe rod is located on the control panel base outside the upper cover, and the probe rod is suspended and fixed. One end of the probe is equipped with a sensor to detect the instantaneous current value I, and the other end is equipped with a sensor to detect the fluctuation frequency R. The probe rod is located in the magnetic field generated by the upper magnet and the lower magnet installed on the washing machine impeller; When the washing machine starts to spin-dry, the rotating wheel at the center of the washing machine's pulsator rotates with the inner tub. The upper magnet installed on the control panel and the lower magnet installed on the rotating wheel at the center of the pulsator together generate a rotating magnetic field, causing the probe rod to cut the magnetic field lines and generate an induced current.

2. A control panel base according to claim 1, characterized in that: The upper magnet is a magnetic ring or a magnetized coating.

3. A washing machine, characterized in that: Includes the control panel base as described in any one of claims 1-2; An upper magnet and a probe rod are installed on the control panel base, and a lower magnet is installed on the rotating wheel at the center of the impeller. The probe rod is located in the magnetic field generated by the upper and lower magnets. One end of the probe rod is equipped with a sensor to detect the instantaneous current value I, and the other end is equipped with a sensor to detect the fluctuation frequency R.

4. The washing machine according to claim 3, characterized in that: The probe is located on the left or right side of the control panel.

5. The washing machine according to claim 3, characterized in that: A lower magnet is placed on top of the rotating wheel at the center of the impeller.

6. A control method for an eccentric sensing system of a washing machine as described in any one of claims 3-5, characterized in that: The washing machine starts spinning. The stability of spinning is judged by the instantaneous current value I generated by the probe cutting the magnetic field lines and the fluctuation frequency R. The stability level determines whether the washing machine should start spinning and the acceleration.

7. The eccentricity sensing system control method for a washing machine according to claim 6, characterized in that: If the dehydration stability Q is less than the set value q, then the dehydration acceleration is matched according to the dehydration stability Q; If the dehydration stability Q is greater than the set value q, the dehydration process will terminate, and the inner tank balance will be corrected by refilling with water before restarting the dehydration process.

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