Control method of dishwasher and dishwasher

Abstract

The embodiment of the application provides a control method of a dishwasher and the dishwasher, and the method comprises the following steps: acquiring first noise data of the dishwasher in a historical washing stage in the process of executing a washing task; in the case that the first noise data represents that the dishwasher meets a first noise reduction starting condition, adjusting a working parameter of a current washing stage to reduce the noise of the dishwasher in the current washing stage, and the current washing stage is any washing stage in the washing task except the first washing stage. By collecting the noise data of each washing stage in real time, the working parameter of the washing motor is dynamically adjusted in combination with the preset noise reduction starting condition, so that the noise reduction program is executed in different washing stages in a segmented manner. The strategy of the above-mentioned phased noise perception and active noise reduction control realizes closed-loop suppression from a noise source to a propagation path.

Description

Technical Field

[0001] This application relates to the field of electronic appliances, and more particularly to a control method for a dishwasher and a dishwasher. Background Technology

[0002] With the increasing demand for smart and comfortable kitchen appliances from modern families and the catering industry, dishwashers, as efficient tableware cleaners, have been widely used in many scenarios such as home kitchens, hotel kitchens, and commercial catering. However, the noise generated by dishwashers during operation remains a key pain point affecting user experience.

[0003] Currently, dishwashers primarily address noise issues through passive noise reduction and structural optimization. Passive noise reduction suppresses noise propagation through physical materials or structural design, but this method only suppresses sheet metal resonance noise and is ineffective against the core noise source. Structural optimization reduces noise by increasing the cabinet wall thickness, improving the spray arm nozzle design, or adjusting the mechanical transmission path; however, this method is costly and offers limited design freedom. Summary of the Invention

[0004] This application provides a dishwasher control method and a dishwasher, which achieves dynamic sensing and active noise reduction effects.

[0005] In a first aspect, embodiments of this application provide a method for controlling a dishwasher, the method comprising:

[0006] During the washing process, acquire the first noise data of the dishwasher in the historical washing stages;

[0007] When the first noise data characterizes that the dishwasher meets the first noise reduction start-up condition, the operating parameters of the current washing stage are adjusted to reduce the noise of the dishwasher in the current washing stage. The current washing stage is any washing stage in the washing task other than the first washing stage.

[0008] In one possible implementation, the first noise data characterizes that the dishwasher meets a first noise reduction start-up condition, including:

[0009] Based on the first noise data of the historical washing stage, the first noise characteristic value of the dishwasher in the historical washing stage is determined.

[0010] If the first noise characteristic value is greater than the noise threshold corresponding to the historical washing stage, the dishwasher is determined to meet the first noise reduction start condition.

[0011] In one possible implementation, the historical washing phase includes multiple washing phases; the first noise characteristic value of the dishwasher in the historical washing phase is determined based on the first noise data of the multiple washing phases.

[0012] In one possible implementation, determining a first noise characteristic value of the dishwasher during a historical washing phase based on first noise data from the historical washing phase includes:

[0013] Based on the first noise data of multiple washing stages, the average noise value of multiple washing stages is determined, and the average noise value is used as the first noise feature value of the historical washing stages.

[0014] In one possible implementation, the noise threshold corresponding to the historical washing stage is determined based on environmental feature data, which includes at least one of the time when the washing task starts and the environmental noise data when the washing task is not performed.

[0015] In one possible implementation, the operating parameters include motor speed; adjusting the operating parameters for the current washing stage includes:

[0016] Switch the motor speed of the current washing stage from the first speed setting to the second speed setting; the first speed setting is higher than the second speed setting. The first speed setting indicates that the dishwasher is working normally, while the second speed setting indicates that the dishwasher is starting up with reduced noise.

[0017] In one possible implementation, each washing stage includes multiple work cycles; the method further includes:

[0018] During each washing stage, acquire the second noise data of the dishwasher within the historical work cycle;

[0019] When the second noise data characterizes the dishwasher as meeting the second noise reduction start-up conditions during operation in the historical work cycle, the operating parameters of the dishwasher during operation in the current work cycle are adjusted to reduce the noise in the current work cycle. The current work cycle is any work cycle in each washing stage except for the first work cycle.

[0020] In one possible implementation, the dishwasher includes multiple spray arms, which operate in a preset sequence once as one work cycle; the second noise data of the dishwasher in a historical work cycle includes sub-noise data of each spray arm in the historical work cycle;

[0021] If the dishwasher meets the second noise reduction start-up condition during historical work cycles, based on the second noise data characterization, adjust the operating parameters of the dishwasher during the current work cycle, including:

[0022] Based on the sub-noise data characterization of multiple spray arms, under the condition that the dishwasher meets the second noise reduction start-up condition during operation in the historical working cycle, the operating parameters of multiple spray arms during operation in the current working cycle are adjusted.

[0023] In one possible implementation, if the sub-noise data of multiple spray arms characterizes that the dishwasher meets the second noise reduction start-up condition during historical work cycles, the operating parameters of the multiple spray arms during the current work cycle are adjusted, including:

[0024] If the sub-noise data of any sub-spray arm indicates that the spray arm meets the second noise reduction start-up condition during operation in the historical working cycle, adjust the operating parameters of the spray arm during operation in the current working cycle.

[0025] Secondly, embodiments of this application provide a dishwasher, including: a processor, and a memory communicatively connected to the processor;

[0026] The memory stores instructions that the computer executes;

[0027] The processor executes computer execution instructions stored in memory, causing the processor to perform the first aspect and / or various possible implementations of the first aspect as described above.

[0028] The dishwasher control method and dishwasher provided in this application include: acquiring first noise data of the dishwasher during historical washing stages during the execution of a washing task; adjusting the operating parameters of the current washing stage to reduce the noise of the dishwasher in the current washing stage when the first noise data indicates that the dishwasher meets a first noise reduction start condition, wherein the current washing stage is any washing stage in the washing task other than the first washing stage. By collecting noise data of each washing stage in real time and combining it with preset noise reduction start conditions, the operating parameters of the washing motor are dynamically adjusted, thereby executing the noise reduction program in segments in different washing stages. The above-mentioned segmented noise perception and active noise reduction control strategy achieves closed-loop suppression from the noise source to the propagation path. Attached Figure Description

[0029] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0030] Figure 1 Flowchart of the dishwasher control method provided in this application Figure 1 ;

[0031] Figure 2 Flowchart of the dishwasher control method provided in this application Figure 2 ;

[0032] Figure 3 This is a schematic diagram of the phased noise reduction control process provided in this application;

[0033] Figure 4 A schematic diagram of the phased noise reduction control process provided in this application;

[0034] Figure 5 This is a schematic diagram of the dishwasher provided in this application.

[0035] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0036] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0037] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying 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 this application, "multiple" means two or more, unless otherwise explicitly specified.

[0038] With the increasing demand for intelligent and comfortable kitchen appliances from modern families and the catering industry, dishwashers, as efficient tableware cleaners, have been widely used in many scenarios such as home kitchens, hotel kitchens, and commercial catering. However, the noise generated during dishwasher operation remains a key pain point affecting user experience. For example, during the pre-rinse, main wash, and rinse stages, high-pressure water jets sprayed onto the tableware surface through the spray arms generate high-frequency pulsating noise; at the same time, the mechanical vibration of the washing motor running at high speed is also transmitted to the external environment through the cabinet structure. This noise not only interferes with normal communication and activities in the kitchen area, but may even affect the rest of family members when running at night. Especially with the increasing popularity of open kitchen designs, the noise reduction performance of dishwashers directly affects their market competitiveness.

[0039] In addition, the catering industry has more stringent requirements for the stability and low noise of equipment operation. For example, during peak business hours, dishwashers need to run continuously for a long time. If the noise is not properly controlled, it may have a negative impact on the working environment of employees and the customer experience.

[0040] Currently, noise reduction technologies for dishwashers mainly employ two categories: passive noise reduction and structural optimization. Passive noise reduction refers to suppressing noise propagation through physical materials or structural design. For example, adding sound-absorbing cotton or damping layers (such as asphalt sheets) to the inner wall of the dishwasher to absorb high-frequency vibration energy, or reducing noise radiation by optimizing the cabinet wall thickness and spray arm layout. However, these methods can only suppress sheet metal resonance noise, and their effectiveness in suppressing high-frequency vibration noise (such as the vibration energy transmission of the washing motor drive system) and core noise sources (such as water jet impact) is limited, and the material costs are relatively high. Structural optimization refers to reducing noise by increasing the cabinet wall thickness, improving the spray arm nozzle design, or adjusting the mechanical transmission path. This method usually requires sacrificing design freedom, leading to increased product size or significantly higher manufacturing costs.

[0041] To address the aforementioned technical problems, this application proposes a dishwasher control method. Based on the dynamic characteristics of noise during the dishwasher washing process, it achieves closed-loop suppression from the noise source to the propagation path through a phased noise perception and active noise reduction control strategy. Specifically, by collecting noise data in real time at each washing stage, such as water flow impact noise and washing motor operating noise, and combining this with preset noise thresholds, the operating parameters of the washing motor are dynamically adjusted, thereby executing a segmented noise reduction program in different washing stages. This application establishes a dynamic noise model of the washing process through progressive acquisition and analysis of noise data, and achieves active noise reduction based on the model results, rather than relying on traditional passive noise reduction static suppression methods.

[0042] The dishwasher control method provided in this application is applicable to dishwashers in scenarios such as home kitchens, hotel kitchens, and commercial catering. In typical application scenarios, dishwashers need to complete the dishwashing task in multiple washing stages while meeting low-noise operation requirements. The dishwasher control method provided in this application can be integrated into the dishwasher control system. Through embedded sensors, such as noise sensors and current sensors, noise data during the washing stages is collected in real time, and a central controller, such as a microprocessor, performs noise analysis and noise reduction decisions. In terms of network architecture, the system connects various sensors and execution units, such as the washing motor, through an internal communication bus (such as a CAN bus), realizing closed-loop data feedback and real-time control command transmission.

[0043] In one embodiment, such as Figure 1 As shown, the dishwasher control method provided in this application includes:

[0044] Step 101: During the execution of the washing task, acquire the first noise data of the dishwasher in the historical washing stage;

[0045] Step 102: If the first noise data indicates that the dishwasher meets the first noise reduction start-up condition, adjust the working parameters of the current washing stage to reduce the noise of the dishwasher in the current washing stage. The current washing stage is any washing stage in the washing task other than the first washing stage.

[0046] The washing task refers to the series of automated processes performed by the dishwasher to transform dirty dishes into clean and dry ones. This includes a series of ordered, parameter-adjustable physical operation stages. Based on the needs of different usage scenarios, dishwashers typically have multiple task modes. The differences between these modes lie in the selection of stages, parameter adjustments, and optimization of the sequence. For example, in standard mode, the washing task usually includes a pre-rinse stage, a main wash stage, a cold rinse stage, a hot rinse stage, and a drying stage; while in quick wash mode, the washing task may include a main wash stage, a cold rinse stage, a hot rinse stage, and a drying stage. In the embodiments of this application, the washing task is selected by the user based on usage needs or intelligently selected by the dishwasher based on sensors and algorithms; the task mode is not specifically limited.

[0047] The washing stages refer to the multiple stages that make up a washing task. A complete washing task typically includes a pre-rinse stage, a main wash stage, a cold rinse stage, and a hot rinse stage. The historical washing stages refer to the washing stages that have been completed in a single washing task; there can be one or more historical washing stages. The current washing stage refers to the stage that is about to begin; there is only one current washing stage. Taking multiple historical washing stages as an example, in the complete process of executing a washing task, if the current washing stage is the pre-rinse stage, then there is no historical washing stage; if the current washing stage is the main wash stage, then the historical washing stage is the pre-rinse stage; if the current washing stage is the cold rinse stage, then the historical washing stage includes both the pre-rinse stage and the main wash stage. When there is only one historical washing stage, the washing stage preceding the current washing stage is usually defined as the historical washing stage.

[0048] Noise data refers to the quantitative representation of noise signals generated during the operation of a dishwasher, including water flow impact noise and motor vibration noise. Noise data is the digital noise value obtained by analog-to-digital conversion of analog signals collected by a noise sensor. In this embodiment, during the washing process, noise data is collected in real time by a noise sensor; then, the noise data is divided according to washing stages to obtain noise data for each washing stage. It should be noted that complete noise data for a washing stage is generated only after that washing stage has finished running. The first noise data refers to the sum of all noise data from all historical washing stages.

[0049] The first noise reduction activation condition refers to the condition used to determine whether the dishwasher should activate the noise reduction program when entering the next washing stage after the current washing stage has ended. In other words, the first noise reduction activation condition is used to assess the noise generated during the washing stage and determine whether the dishwasher's noise is less than the noise threshold or within a preset noise range.

[0050] It should be noted that the initial noise reduction activation condition can be the same for different washing stages. For example, the initial noise reduction activation condition for the pre-rinse, main wash, and cold rinse stages is that the noise level exceeds 60dB. Taking the pre-rinse stage as an example, if the noise level exceeds 60dB during the pre-rinse stage, the noise reduction program will be activated during the main wash stage. The initial noise reduction activation condition can also be different for different washing stages. For example, the initial noise reduction activation condition for the main wash stage is a noise level exceeding 60dB, while the initial noise reduction activation condition for the cold rinse stage is a noise level exceeding 55dB.

[0051] In this embodiment, before the dishwasher enters the current washing stage, a judgment is made based on the first noise data from the historical washing stages and the corresponding first noise reduction activation conditions to determine whether a noise reduction program needs to be activated in the current washing stage. The first noise data includes data collected at multiple time points; therefore, there are multiple judgment methods when making a judgment based on the first noise reduction activation conditions corresponding to the historical washing stages. For example, if instantaneous values ​​are used for judgment, once the noise at a certain instant meets the first noise reduction activation conditions, it is determined that a noise reduction program needs to be activated in the current washing stage. However, the above method has poor anti-interference capabilities. Therefore, the overall noise situation of the historical washing stages can be evaluated based on the first noise data, thereby performing noise reduction processing based on the operation of the entire historical washing stages.

[0052] In one embodiment, the first noise data characterizes that the dishwasher meets a first noise reduction start-up condition, including:

[0053] Based on the first noise data of the historical washing stage, the first noise characteristic value of the dishwasher in the historical washing stage is determined.

[0054] If the first noise characteristic value is greater than the noise threshold corresponding to the historical washing stage, the dishwasher is determined to meet the first noise reduction start condition.

[0055] The first noise feature value is used to characterize the noise level of the dishwasher throughout the entire historical washing cycle. For example, it can be calculated based on the noise levels collected at multiple time points in the first noise data, using the average noise level over the entire historical washing cycle as the first noise feature value. In some embodiments, to improve the robustness of the system, more informative features, such as short-time energy or power, short-time zero-crossing rate, frequency domain features, and statistical features, can be extracted as the first noise feature value to better capture the noise performance of the dishwasher during washing tasks.

[0056] The noise threshold corresponding to the washing stage determines the first noise reduction activation condition for that washing stage. If the first noise characteristic value is greater than the corresponding noise threshold, it indicates that the noise generated in the previous washing stage is too large, and noise reduction processing needs to be activated in the next washing stage (i.e., the current washing stage).

[0057] Operating parameters refer to the dishwasher's operational parameters during the current washing cycle, including the washing motor speed, spray arm rotation mode and speed, and water pump pressure. Among these, the noise generated by the dishwasher during operation is positively correlated with the washing motor speed. Specifically, the higher the motor speed, the faster the internal cooling fan or rotor rotates, resulting in more intense airflow and greater wind shearing and air turbulence noise. Therefore, noise reduction programs can be implemented by adjusting the washing motor speed.

[0058] Specifically, the dishwasher program has multiple speed settings for the washing motor. Ideally, different speed settings correspond to different noise levels. When it is determined that the dishwasher needs to activate a noise reduction program, noise reduction is achieved by lowering the speed setting of the washing motor. It should be noted that in this embodiment, the speed setting is gradually reduced when the noise reduction program is activated. For example, if the washing motor has three speed settings, in order of speed magnitude, they are setting 1, setting 2, and setting 3; during the pre-rinse stage, the washing motor speed setting is setting 1. If the average noise level during the pre-rinse stage is detected to be greater than the noise threshold, the washing motor speed setting is adjusted to setting 2 during the main wash stage.

[0059] In one embodiment, when the spin speed settings only include a first spin speed setting and a second spin speed setting, adjusting the operating parameters of the current washing stage includes:

[0060] Switch the motor speed of the current washing stage from the first speed setting to the second speed setting; the first speed setting is higher than the second speed setting. The first speed setting indicates that the dishwasher is working normally, while the second speed setting indicates that the dishwasher is starting up with reduced noise.

[0061] The first speed setting is higher than the second speed setting; that is, the first speed setting represents the washing motor in high-speed mode, and the second speed setting represents the washing motor in low-speed mode. The low-speed mode is matched with the control range values ​​for low operating noise and low water flow impact noise, while the high-speed mode is the normal operating setting. When the dishwasher meets the first noise reduction start-up condition indicated by the first noise data, the washing motor's operating mode is switched from high-speed mode to low-speed mode during the current washing stage.

[0062] The method provided in the above embodiments achieves dynamic suppression of dishwasher operating noise through a closed-loop process of phased noise perception and active noise reduction control. Specifically: Noise data acquisition stage: During the washing task execution, noise sensors collect noise signals of each washing stage in real time, and obtain motor operating parameters (such as speed and current) through current sensors to monitor the status of the washing motor in real time; Noise analysis stage: The central controller processes the collected noise data in stages, calculates the noise characteristic value of each washing stage, and compares it with the preset noise threshold; Noise reduction strategy execution stage: If the noise characteristic value of a historical washing stage exceeds the corresponding noise threshold, the noise reduction program is triggered to adjust the speed of the washing motor (such as switching from high speed to low speed) to reduce water flow impact noise and motor vibration noise; Dynamic monitoring stage: During the execution of the noise reduction program, the system continuously collects noise data and dynamically monitors the noise characteristic value to ensure that it is always within the preset range; if the noise of a subsequent washing stage exceeds the standard again, the noise reduction program is triggered again. Through the above process, the system achieves closed-loop control from the noise source (such as motor speed adjustment) to the propagation path (such as noise suppression), while taking into account both washing effect and energy efficiency.

[0063] In one embodiment, the historical washing phase includes multiple washing phases; the first noise characteristic value of the dishwasher in the historical washing phase is determined based on the first noise data of the multiple washing phases.

[0064] When the current washing stage is the third or subsequent stage in the entire washing process, its historical washing stages include multiple washing stages. For example, if a complete washing process includes a pre-rinse stage, a main wash stage, a cold rinse stage, and a hot rinse stage, then for the cold rinse stage, its historical washing stages include the pre-rinse stage and the main wash stage. For the hot rinse stage, its historical washing stages include the pre-rinse stage, the main wash stage, and the cold rinse stage. The first noise characteristic value is determined based on the noise data from all preceding washing stages.

[0065] Specifically, taking the first noise characteristic value as the average noise value as an example, after the pre-rinse stage, the average noise value of the pre-rinse stage is calculated based on the first noise data of the pre-rinse stage and compared with the noise threshold. When the average noise value is greater than the noise threshold, the noise reduction program is started in the main wash stage. After the main wash stage, the average noise value of the pre-rinse stage is calculated based on the first noise data of the pre-rinse stage and the main wash stage and compared with the noise threshold. When the average noise value is greater than the noise threshold, the noise reduction program is started in the cold rinse stage. The hot rinse stage is similar.

[0066] The method provided in the above embodiments, based on the progressive acquisition and analysis of noise data, enables the system to achieve closed-loop suppression from the noise source to the propagation path, ensuring that the noise during the entire washing process remains within a controllable range and improving the user experience.

[0067] In one embodiment, the noise threshold corresponding to the historical washing stage is determined based on environmental feature data, which includes at least one of the time when the washing task starts and the environmental noise data when the washing task is not performed.

[0068] The noise threshold for the washing stage is related to the start time of the washing task and the ambient noise. For example, when performing a washing task at night, the noise threshold for the washing stage can be appropriately reduced compared to daytime to avoid disturbing the user's rest. In a quiet environment, the noise of a dishwasher will be particularly noticeable compared to a noisy environment, and in this case, the noise threshold for the washing stage can be appropriately reduced.

[0069] In addition, the noise threshold during the washing stage can be dynamically adjusted based on the user's noise reduction preferences, such as "silent mode" or "high-efficiency mode".

[0070] The dynamic noise threshold mechanism can flexibly adjust the noise reduction strategy according to changes in ambient noise and user needs, avoiding excessive or insufficient noise reduction caused by a fixed threshold. For example, during nighttime operation, the system can automatically lower the noise threshold to reduce interference with family members' rest; while during peak business hours, the system can relax the threshold to balance cleaning efficiency. In addition, the introduction of user-defined modes can enhance the personalized experience of the product and meet the noise reduction needs of different scenarios.

[0071] In one embodiment, such as Figure 2 As shown, each washing stage includes multiple work cycles; the method also includes:

[0072] Step 201: In each washing stage, acquire the second noise data of the dishwasher within the historical working cycle;

[0073] Step 202: If the second noise data characterizes that the dishwasher meets the second noise reduction start-up conditions during operation in the historical working cycle, adjust the operating parameters of the dishwasher during operation in the current working cycle to reduce the noise in the current working cycle. The current working cycle is any working cycle in each washing stage except for the first working cycle.

[0074] For multiple work cycles within each washing stage, the same sensing and control strategy can be employed, achieving noise reduction control precise down to the individual work cycle level. Correspondingly, the second noise data is collected based on the work cycle, and the second noise reduction activation condition is also the noise reduction judgment condition corresponding to the work cycle level; it can be the same as or different from the first noise reduction activation condition. The difference between noise reduction by work cycle and noise reduction by washing stage lies in the different levels of noise reduction judgment.

[0075] In one embodiment, the dishwasher includes multiple spray arms, and the multiple spray arms operate in a preset sequence once as one working cycle. For example, the dishwasher includes upper, middle and lower spray arms. The noise characteristics of each spray arm are different in its independent working state. Therefore, the operation of each spray arm can be judged and controlled individually by monitoring the sub-noise data of the upper, middle and lower spray arms when they are running separately.

[0076] Specifically, the second noise data of the dishwasher during the historical operating cycle includes sub-noise data for each spray arm during the historical operating cycle;

[0077] If the dishwasher meets the second noise reduction start-up condition during historical work cycles, based on the second noise data characterization, adjust the operating parameters of the dishwasher during the current work cycle, including:

[0078] If the sub-noise data characterizes that the corresponding spray arm meets the second noise reduction start-up condition during operation in the historical working cycle, adjust the operating parameters of the spray arm during operation in the current working cycle.

[0079] The spray arms of a dishwasher are independent components used to spray water to clean dishes. Multiple spray arms are located in different positions within the dishwasher, such as the upper, middle, and lower spray arms. During a work cycle, the multiple spray arms operate sequentially according to a preset order; therefore, a work cycle consists of the operation of multiple spray arms.

[0080] When judging and controlling each spray arm individually, the operating parameters of each spray arm in the current working cycle are adjusted based on its noise performance during historical working cycles. Based on the sub-noise data of the targeted spray arm during historical working cycles, a second noise characteristic value is determined for each spray arm during historical working cycles. Based on the second noise characteristic value of each spray arm during historical working cycles, it is determined whether the second noise reduction start-up condition is met for that spray arm during historical working cycles.

[0081] The second noise characteristic value characterizes the noise performance of the corresponding spray arm during its historical working cycle. The second noise characteristic value can be an instantaneous value, an average noise value, or determined in other ways, and can be referred to the first noise characteristic value for details.

[0082] Specifically, if the second noise characteristic value is greater than the noise threshold corresponding to the spray arm, it is determined that the spray arm meets the second noise reduction start-up condition during operation within the historical working cycle. It should be noted that, in individual judgment and control, each spray arm has a corresponding noise threshold, which is determined based on the noise characteristics of each spray arm in independent working state.

[0083] Furthermore, noise throughout the entire historical working cycle can be analyzed using the sub-noise data of each spray arm, thereby enabling overall control of multiple spray arms. Specifically, for each spray arm, based on the second noise characteristic value of the spray arm during its historical working cycle, if the second noise characteristic value of any spray arm is greater than the noise threshold corresponding to that spray arm, then at the beginning of the current working cycle, a noise reduction program is initiated. That is, starting from the first spray arm of the current working cycle, the operating parameters are adjusted to achieve noise reduction.

[0084] In one embodiment, a third noise characteristic value of multiple spray arms during the operation of a historical working cycle can be determined based on the second noise characteristic value of each spray arm; if the third noise characteristic value is greater than the noise threshold corresponding to the historical working cycle, it is determined that the spray arm meets the second noise reduction start-up condition during the operation of the historical working cycle.

[0085] The third noise characteristic value characterizes the noise performance throughout the entire working cycle. In one embodiment, the third noise characteristic value can be obtained by averaging the second noise characteristic values ​​of multiple spray arms. In the above scheme, although the multiple spray arms operate separately, the entire historical working cycle is treated as a whole. When the third noise characteristic value is greater than the noise threshold corresponding to the historical working cycle, noise reduction is activated for each spray arm during the current working cycle.

[0086] It should be noted that, in one embodiment, if the second noise feature value is an average value and the third noise feature value is also an average value, then the third noise feature value can be directly determined based on the sub-noise data of multiple spray arms, simplifying the judgment process.

[0087] The difference between noise reduction based on work cycles and noise reduction based on washing stages lies in the different levels of noise reduction assessment and the different objects targeted. Noise reduction based on work cycles is refined to each individual spray arm, while noise reduction based on washing stages applies to the entire washing stage. By combining the two, in the second and subsequent washing stages, the working parameters of the first work cycle of the current washing stage can be determined based on the historical washing stages. Then, within the current washing stage, the working parameters of the current work cycle are dynamically adjusted based on the historical work cycles, achieving staged and cycle-based noise reduction.

[0088] The method provided in the above embodiments, through the acquisition of noise data from individual spray arms, enables the system to more accurately identify the noise characteristics of different spray arms during operation. For example, if the water flow impact noise of the upper spray arm is significantly higher than that of other spray arms, the system can specifically adjust the motor speed or water pressure corresponding to the upper spray arm, rather than uniformly reducing noise throughout the entire washing process. This refined noise data acquisition method improves the targeting of the noise reduction strategy, avoiding over- or under-reduction caused by generalized processing, while also reducing energy waste. In addition, the acquisition of noise data from individual spray arms can also assist in optimizing the spray arm design, such as the nozzle layout, further improving the overall noise reduction effect.

[0089] In one embodiment, the method further includes:

[0090] During the washing process, the operating status parameters of the washing motor are acquired at each washing stage or each working cycle.

[0091] If the operating status parameters indicate that the dishwasher meets the third noise reduction start condition, adjust the operating parameters for the next washing stage or the next work cycle.

[0092] The operating status parameters describe the operating status of the washing motor, including speed, current, and power. During the washing process, the operating status parameters are monitored in real time to assess the noise level of the dishwasher and determine whether the third noise reduction start-up condition is met. This is to avoid situations where abnormal operation occurs, such as motor idling or water pump empty suction. Based on the first and second noise data, the average noise value cannot determine abnormal noise conditions.

[0093] In one specific embodiment, a control method for intelligent noise reduction in a dishwasher is provided, comprising the following three parts:

[0094] (I) Noise Data Acquisition:

[0095] 1. Noise data for each washing stage in a complete washing task, including water flow impact noise and motor operating noise;

[0096] 2. During each washing stage, one work cycle, the second noise data of the upper, middle and lower spray arms during operation, including water flow impact noise and motor operating noise;

[0097] 3. Washing motor operating speed / current value.

[0098] (II) Data Analysis and Processing:

[0099] 1. A complete washing process: Calculate the average noise level of all historical washing stages after the completion of one washing stage.

[0100] For example: the average value during the pre-rinse stage;

[0101] Average noise levels during the pre-wash and main wash stages;

[0102] Average noise levels during the pre-rinse, main wash, and cold rinse stages.

[0103] 2. One washing stage: Calculate the average noise level of each component of the upper, middle and lower spray arms after one working cycle, based on the historical working cycle.

[0104] (III) Noise Reduction Procedure:

[0105] 1. The program presets noise thresholds for the upper spray arm, middle spray arm, and lower spray arm; as well as noise thresholds for each washing stage. The noise thresholds for each washing stage include: noise threshold for the pre-rinse stage; noise thresholds for the pre-rinse and main wash stages; and noise thresholds for the pre-rinse, main wash, and cold rinse stages.

[0106] 2. The program presets the operating parameters of the washing motor, which are divided into high and low speeds; the low speed is matched with the control range of low operating noise and low water flow impact noise, while the high speed is the normal operating speed.

[0107] 3. Noise reduction program during the washing stage:

[0108] A complete washing process: Based on the noise data collected in the previous washing stage, the average noise level is analyzed to determine whether to activate the noise reduction mode in the next washing stage. If the average noise level in the previous washing stage exceeds the preset noise threshold, the program will activate the noise reduction program in the next washing stage, such as... Figure 3 As shown.

[0109] By switching between high and low speed operating modes of the washing motor, the operating noise of the washing motor itself and the water pressure in the water circuit can be adjusted, thereby regulating the water flow impact noise of the upper, middle and lower spray arms.

[0110] By collecting and analyzing the average noise value from the start of the washing stage to the current washing stage in real time, dynamic collection and monitoring are carried out to ensure that the overall average noise value is always within the preset range.

[0111] Within a single washing cycle: Multiple work cycle modes are set for the upper, middle, and lower spray arms. When the average noise level of the upper, middle, and lower spray arms in one work cycle exceeds a preset noise threshold, the program activates a noise reduction program in the next work cycle. Figure 4 As shown.

[0112] It should be understood that although the steps in the flowcharts of the above embodiments are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the above embodiments may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0113] Figure 5 This is a structural diagram of the dishwasher provided in this application. Figure 5 As shown, the dishwasher 50 provided in this embodiment includes at least one processor 501 and a memory 502. Optionally, the device 50 also includes a communication component 503. The processor 501, memory 502, and communication component 503 are connected via a bus 504.

[0114] In a specific implementation, at least one processor 501 executes computer execution instructions stored in memory 502, causing at least one processor 501 to perform the above-described method.

[0115] The specific implementation process of processor 501 can be found in the above method embodiments, and its implementation principle and technical effect are similar. It will not be repeated here.

[0116] In the above embodiments, it should be understood that the processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), etc. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in this invention can be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules within the processor.

[0117] The memory may include random access memory (RAM) and may also include non-volatile memory (NVM), such as at least one disk storage device.

[0118] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of illustration, the buses shown in the accompanying drawings are not limited to a single bus or a single type of bus.

[0119] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the above-described method.

[0120] This application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the above-described method.

[0121] The aforementioned readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The readable storage medium can be any available medium accessible to a general-purpose or special-purpose computer.

[0122] An exemplary readable storage medium is coupled to a processor, enabling the processor to read information from and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can reside in an Application Specific Integrated Circuit (ASIC). Alternatively, the processor and the readable storage medium can exist as discrete components in the device.

[0123] The division of units is merely a logical functional division; in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0124] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0125] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0126] If a function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0127] Those skilled in the art will understand that all or part of the steps of the above-described method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0128] Finally, it should be noted that other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A method for controlling a dishwasher, characterized in that, The method includes: During the washing process, acquire the first noise data of the dishwasher in the historical washing stages; When the first noise data indicates that the dishwasher meets the first noise reduction start condition, the operating parameters of the current washing stage are adjusted to reduce the noise of the dishwasher in the current washing stage. The current washing stage is any washing stage in the washing task other than the first washing stage.

2. The method according to claim 1, characterized in that, The first noise data indicates that the dishwasher meets the first noise reduction start-up condition, including: Based on the first noise data of the historical washing stage, the first noise characteristic value of the dishwasher in the historical washing stage is determined; If the first noise characteristic value is greater than the noise threshold corresponding to the historical washing stage, it is determined that the dishwasher meets the first noise reduction start condition.

3. The method according to claim 2, characterized in that, The historical washing phase includes multiple washing phases; the first noise characteristic value of the dishwasher in the historical washing phase is determined based on the first noise data of the multiple washing phases.

4. The method according to claim 3, characterized in that, The step of determining the first noise characteristic value of the dishwasher in the historical washing stage based on the first noise data of the historical washing stage includes: Based on the first noise data of the multiple washing stages, the average noise value of the multiple washing stages is determined, and the average noise value is used as the first noise feature value of the historical washing stages.

5. The method according to claim 2, characterized in that, The noise threshold corresponding to the historical washing stage is determined based on environmental feature data, which includes at least one of the time when the washing task starts and the environmental noise data when the washing task is not performed.

6. The method according to claim 1, characterized in that, The operating parameters include motor speed; adjusting the operating parameters for the current washing stage includes: The motor speed of the current washing stage is switched from the first speed setting to the second speed setting; the first speed setting is greater than the second speed setting, the first speed setting indicates that the dishwasher is working normally, and the second speed setting indicates that the dishwasher starts up with noise reduction.

7. The method according to claim 1, characterized in that, Each washing stage includes multiple work cycles; the method further includes: In each washing stage, the second noise data of the dishwasher within the historical working cycle is acquired; When the second noise data indicates that the dishwasher meets the second noise reduction start-up condition during operation in the historical work cycle, the operating parameters of the dishwasher during operation in the current work cycle are adjusted to reduce the noise in the current work cycle, wherein the current work cycle is any work cycle other than the first work cycle in each washing stage.

8. The method according to claim 7, characterized in that, The dishwasher includes multiple spray arms, and the multiple spray arms operate in a preset sequence once as one working cycle; the second noise data of the dishwasher in the historical working cycle includes the sub-noise data of each spray arm in the historical working cycle. The step of adjusting the operating parameters of the dishwasher during the current working cycle, when the second noise data indicates that the dishwasher meets the second noise reduction start-up condition during the historical working cycle, includes: When the sub-noise data of the multiple spray arms indicates that the dishwasher meets the second noise reduction start-up condition during the operation of the historical working cycle, the operating parameters of the multiple spray arms during the operation of the current working cycle are adjusted.

9. The method according to claim 8, characterized in that, When the sub-noise data of the multiple spray arms indicates that the dishwasher meets the second noise reduction start-up condition during operation in the historical work cycle, the operating parameters of the multiple spray arms during operation in the current work cycle are adjusted, including: If the sub-noise data of any sub-spray arm indicates that the spray arm meets the second noise reduction start-up condition during the operation of the historical working cycle, the operating parameters of the spray arm during the operation of the current working cycle are adjusted.

10. A dishwasher, characterized in that, include: A processor, and a memory communicatively connected to the processor; The memory stores computer-executed instructions; The processor executes computer execution instructions stored in the memory to implement the method as described in any one of claims 1 to 9.

Images