CN115928367A - Laundry appliance and weighing method thereof - Google Patents

Abstract

The embodiment of the application provides laundry equipment and a weighing method thereof, relates to the technical field of laundry equipment, and aims to at least solve the problems of poor washing effect and poor user experience caused by low precision of a clothes weighing value calculated by adopting a single technical index value in the related art. The laundry equipment comprises a controller, a motor and a collecting device, wherein the motor and the collecting device are connected with the controller; the controller is configured to: after the motor runs at a first preset rotating speed for a first preset time, controlling the acquisition device to acquire a first current and a first voltage of the motor so as to determine a first target power; after the motor runs at a second preset rotating speed for a second preset time, controlling the acquisition device to acquire a second current and a second voltage of the motor so as to determine a second target power; determining the clothes weight corresponding to the target power difference as the target weight of the target clothes according to the corresponding relation between the power difference and the clothes weight; the target power difference is a difference between the second target power and the first target power.

Description

Laundry appliance and weighing method thereof

Technical Field

The application relates to the technical field of laundry equipment, in particular to laundry equipment and a weighing method thereof.

Background

Along with the improvement of living standard of people, the performance requirement on the washing machine is higher and higher, so that the full-automatic washing machine is developed towards the direction of more energy conservation, environmental protection and intellectualization. Because the water consumption and the washing time of the washing machine are determined by the weight of clothes in the washing machine, and the water consumption and the washing time of the washing machine directly influence the washing effect, the water consumption and the power consumption of the washing machine, accurately acquiring the weight of the clothes in the washing machine becomes a key point for realizing energy conservation, environmental protection and intellectualization of the washing machine.

In the related art, the washing machine generally obtains the weight of the laundry in the washing machine through a single technical index, such as the rotation speed of the motor or the current of the motor. The precision of the clothes weighing value calculated by the single technical index value is not high, so that the washing effect is poor, and the use experience of a user is poor.

Disclosure of Invention

The embodiment of the application provides laundry equipment and a weighing method thereof, and aims to at least solve the problems of poor washing effect and poor user experience caused by low precision of a clothes weighing value calculated by adopting a single technical index value in the related technology.

In a first aspect, a laundry appliance is provided, which includes a controller, and a motor and a collection device connected to the controller; the motor is used for driving the washing equipment to rotate; the collecting device is used for collecting the current and the voltage of the motor; the controller is configured to: after the motor runs at a first preset rotating speed for a first preset time, controlling the acquisition device to acquire a first current and a first voltage of the motor so as to determine a first target power; after the motor runs at a second preset rotating speed for a second preset time, controlling the acquisition device to acquire a second current and a second voltage of the motor so as to determine a second target power; the second preset rotating speed is greater than the first preset rotating speed; determining the clothes weight corresponding to the target power difference as the target weight of the target clothes according to the corresponding relation between the power difference and the clothes weight; the target power difference is a difference between the second target power and the first target power.

The first preset rotating speed corresponds to the second preset rotating speed. And the first preset time and the first preset rotating speed are correspondingly set so as to ensure that the first current and the first voltage are collected under the condition of stably operating at the first preset rotating speed, so as to ensure the stability of the first current and the first voltage, and avoid the problem of low accuracy of the first target power caused by adopting unstable current or voltage.

Similarly, the second preset time and the second preset rotating speed are correspondingly set to ensure that the second current and the second voltage are collected under the condition of stably operating at the first preset rotating speed, so that the stability of the second current and the second voltage is ensured, and the problem of low accuracy of the second target power caused by unstable current or voltage is avoided.

In the process of determining the first target power and the second target power, the first target power and the second target power are determined based on a correspondence relationship in which the current and the voltage of the motor are positively correlated with the power.

It should be noted that, when the weight of the laundry loaded on the laundry device increases, the resistance to the rotation of the motor of the laundry device also increases. When the rotation speed of the washing device is increased, the rotation speed of the rotor of the motor and the rotating magnetic field intensity of the motor are also increased, the current input into the motor is also increased, and the corresponding voltage of the motor is also changed correspondingly, so that the power of the motor is also increased. Therefore, based on the operating principle of the laundry device, there is a positive correlation between the weight of the laundry loaded on the laundry device and the variation value of the power.

The technical scheme provided by the embodiment of the application at least has the following beneficial effects: the washing equipment collects corresponding current and voltage of the motor in two different preset rotating speeds and stable operation through the collecting device to determine two target powers of the motor in the two stable rotating speeds, so that a target power difference between the two target powers is obtained. And then obtaining the weight of the clothes corresponding to the target power difference based on the corresponding relation between the preset power difference and the weight of the clothes in the washing equipment, and determining the corresponding weight of the clothes as the target weight of the clothes. Therefore, in the process of executing each washing program, the target weight is determined according to the current parameter index and the voltage parameter index, and compared with the target weight determined by adopting a single parameter index in the related technology, the accuracy of the target weight determined by the washing equipment is higher, so that when the washing program is executed by the washing equipment, the operation parameters (such as water consumption, washing time, usage amount of laundry detergent and the like) determined according to the target weight are more accurate, the washing effect is improved, and the use experience of a user is improved.

In some embodiments, the controller executes the control of the collecting device to collect a first current and a first voltage of the motor to determine a first target power, and is specifically configured to: collecting a plurality of first currents and a plurality of first voltages; determining an average value of the plurality of first currents as a first target current, and determining an average value of the plurality of first voltages as a first target voltage; and determining the power corresponding to the first target current and the first target voltage as the first target power according to the positive correlation correspondence relationship among the current, the voltage and the power of the motor.

The plurality of first currents and the plurality of first voltages correspond to each other one by one.

In addition, based on the first currents and the first voltages acquired as described above, after the plurality of acquired first currents and the plurality of acquired first voltages are acquired, before an average value is determined, smoothing may be performed on the plurality of first currents and the plurality of first voltages to remove first currents and first voltages that are not uniformly distributed among the plurality of first currents and the plurality of voltages.

In this embodiment, in order to avoid the influence of the abnormal voltage or the abnormal current collected in the case of the sudden abnormality of the certain collected first current and the certain first voltage, the first target power is determined based on the average value of the collected first currents and the average value of the collected first voltages, so as to ensure the accuracy of the first target power.

In some embodiments, the controller, when executing to control the collecting device to collect the second current and the second voltage of the motor to determine the second target power, is specifically configured to: collecting a plurality of second currents and a plurality of second voltages; determining an average value of the plurality of second currents as a second target current; and determining an average of the plurality of second voltages as a second target voltage; and determining the power corresponding to the second target current and the second target voltage as the second target power according to the positive correlation correspondence relationship among the current, the voltage and the power of the motor.

As an obtaining manner, after it is determined that the motor stably operates at the second preset rotation speed, different second currents and different second voltages at different time intervals within a preset time threshold may be collected to obtain a plurality of second currents and a plurality of second voltages.

As another obtaining manner, after it is determined that the motor stably operates at the second preset rotation speed, different second currents and different second voltages corresponding to different turns within the preset turns of the rotation of the inner drum of the laundry device may be collected to obtain a plurality of second currents and a plurality of second voltages.

Based on the obtained second currents and second voltages, after obtaining a plurality of second currents and a plurality of second voltages, and before determining an average value, the plurality of second currents and the plurality of second voltages may also be smoothed, where a process of the smoothing is the same as a process of the plurality of first currents and the plurality of first voltages in the foregoing embodiment, and details are not repeated here.

In this embodiment, in order to avoid the influence of the collected abnormal voltage or the collected abnormal current under the condition that the collected certain second current and the collected certain second voltage are in the emergency abnormal condition, the second target power is determined based on the average value of the collected plurality of second currents and the average value of the plurality of second voltages, so as to ensure the accuracy of the second target power.

In some embodiments, the controller is further configured to: respectively determining a first target torque corresponding to the first target power and a second target torque corresponding to the second target power according to the corresponding relation among the power, the rotating speed and the torque of the motor; respectively determining a first rated weight corresponding to the first target torque and a second rated weight corresponding to the second target torque according to the corresponding relation between the torque and the rated weight of the motor; the rated weight represents the maximum weight of the motor load at a certain torque.

In some embodiments, the torque is also referred to as torque.

The corresponding relation between the power, the rotating speed and the torque of the motor can be represented by a representation form of a torque function or a representation form of a power model.

In this embodiment, the controller obtains the first target torque and the second target torque respectively according to the corresponding relationship between the power, the rotation speed and the torque of the motor. And then combining the corresponding relation between the torque and the rated weight of the motor to obtain a first rated weight and a second rated weight of the motor energy load, and using the first rated weight and the second rated weight as a basis for judging whether the target weight is reasonable or not so as to further ensure the accuracy of the target weight.

In some embodiments, the controller is further configured to: and when the target weight is greater than or equal to the first rated weight and less than or equal to the second rated weight, determining the operating parameters of the laundry device according to the target weight.

The operating parameters include at least one or more of the following: washing time, dehydration time, water inflow and the like.

In the embodiment, based on the target weight range to which the target weight belongs when the target weight is accurate, the target weight is determined to be in a reasonable range, and then the target weight is adopted to adjust the operation parameters of the laundry equipment so as to ensure the accuracy of the operation parameters and the reliability of the laundry equipment in the operation process.

In some embodiments, the controller is further configured to: and when the target weight is smaller than the first rated weight or larger than the second rated weight, sending early warning information, wherein the early warning information indicates that the target weight is inaccurate.

In the embodiment, after the target weight is determined to be unreasonable, the warning information is sent out to prompt a user that the laundry equipment has a weighing fault, so that the misoperation that the laundry equipment still executes the laundry program in a fault state is reduced.

In some embodiments, the first current and the second current each comprise a current in a first direction and a current in a second direction, and the first voltage and the second voltage each comprise a voltage in the first direction and a voltage in the second direction.

In a second aspect, there is provided a weighing method of a laundry device, the weighing method including: after the motor runs at a first preset rotating speed for a first preset time, controlling the acquisition device to acquire a first current and a first voltage of the motor so as to determine a first target power; after the motor runs at a second preset rotating speed for a second preset time, controlling the acquisition device to acquire a second current and a second voltage of the motor so as to determine a second target power; the second preset rotating speed is greater than the first preset rotating speed; determining the clothes weight corresponding to the target power difference as the target weight of the target clothes according to the corresponding relation between the power difference and the clothes weight; the target power difference is a difference between the second target power and the first target power.

In some embodiments, the controlling the collecting device to collect a first current and a first voltage of the motor to determine a first target power specifically includes: collecting a plurality of said first currents and a plurality of said first voltages; determining an average of a plurality of the first currents as a first target current, and determining an average of a plurality of the first voltages as a first target voltage; and determining the first target power corresponding to the first target current and the first target voltage according to the forward correlation corresponding relation between the current, the voltage and the target power.

In some embodiments, the controlling the collecting device to collect a second current and a second voltage of the motor to determine a second target power specifically includes: collecting a plurality of the second currents and a plurality of the second voltages; determining an average value of a plurality of the second currents as a second target current; and determining an average of a plurality of the second voltages as a second target voltage; and determining the second target power corresponding to the second target current and the second target voltage according to the forward correlation corresponding relation between the current, the voltage and the target power.

In a third aspect, an embodiment of the present application provides a computer-readable storage medium, in which instructions are stored, and when the instructions are executed on any one of the apparatuses, the apparatus is caused to perform any one of the weighing methods of the laundry devices.

In a fourth aspect, an embodiment of the present application provides a chip, including: a processor and a memory; the memory is used for storing computer execution instructions, the processor is connected with the memory, and when the chip runs, the processor executes the computer execution instructions stored in the memory so as to enable the chip to execute any one of the weighing methods of the laundry equipment.

In a fifth aspect, embodiments of the present application provide a computer program product containing instructions that, when run on any one of the above apparatuses, cause the apparatus to perform any one of the above methods of weighing a laundry appliance.

In the embodiments of the present application, the names of the components of the above-mentioned apparatus do not limit the apparatus itself, and in actual implementation, the components may appear by other names. As long as the functions of the respective components are similar to those of the embodiments of the present application, they are within the scope of the claims of the present application and their equivalents.

In addition, the technical effects brought by any one of the design methods of the second aspect to the fifth aspect can be referred to the technical effects brought by the different design methods of the first aspect, and are not described herein again.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.

Fig. 1 is a schematic view of a frame of a laundry device according to an embodiment of the present application;

fig. 2 is a circuit architecture diagram of a laundry device according to an embodiment of the present application;

fig. 3 is a flowchart illustrating a weighing method of a laundry device according to an embodiment of the present application;

fig. 4 is a flowchart of another weighing method for a laundry device according to an embodiment of the present application;

fig. 5 is a flowchart illustrating another weighing method for a laundry device according to an embodiment of the present application;

fig. 6 is a flowchart illustrating another weighing method for a laundry device according to an embodiment of the present application;

fig. 7 is a flowchart illustrating another weighing method for a laundry device according to an embodiment of the present application;

fig. 8 is a flowchart illustrating a weighing method of another laundry device according to an embodiment of the present application;

fig. 9 is a schematic hardware structure diagram of a controller according to an embodiment of the present disclosure.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, the meaning of "a plurality" is two or more unless otherwise specified.

In the description of the present application, it is to be noted that the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, unless explicitly stated or limited otherwise. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art. In addition, when a pipeline is described, the terms "connected" and "connected" are used in this application to have a meaning of conducting. The specific meaning is to be understood in conjunction with the context.

In the embodiments of the present application, the words "exemplary" or "such as" are used herein to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "such as" is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present relevant concepts in a concrete fashion.

Along with the improvement of living standard of people, the performance requirement of the washing machine is higher and higher, so that the full-automatic washing machine is developed towards the direction of more energy conservation, environmental protection and intellectualization. Because the water consumption and the washing time of the washing machine are determined by the weight of the clothes in the washing machine, and the water consumption and the washing time of the washing machine directly influence the washing effect, the water consumption and the power consumption of the washing machine, accurately acquiring the weight of the clothes in the washing machine becomes a key point for realizing energy conservation, environmental protection and intellectualization of the washing machine.

In the related art, the washing machine generally obtains the weight of the laundry in the washing machine through a single technical index, such as the rotation speed of the motor or the current of the motor. The precision of the clothes weighing value calculated by the single technical index value is not high, so that the washing effect is poor, and the user experience is poor.

In view of this, an embodiment of the present application provides a laundry device, where the laundry device first acquires, through an acquisition device, current and voltage corresponding to a motor during stable operation at two different preset rotation speeds, so as to determine two target powers of the motor at the two stable rotation speeds, and thereby obtain a target power difference between the two target powers. And then obtaining the weight of the clothes corresponding to the target power difference based on the corresponding relation between the preset power difference and the weight of the clothes in the washing equipment, and determining the corresponding weight of the clothes as the target weight of the clothes.

Therefore, in the process of executing each washing program, the target weight is determined according to the current parameter index and the voltage parameter index, and compared with the target weight determined by adopting a single parameter index in the related technology, the accuracy of the target weight determined by the washing equipment is higher, so that when the washing program is executed by the washing equipment, the operation parameters (such as water consumption, washing time, usage amount of laundry detergent and the like) determined according to the target weight are more accurate, the washing effect is improved, and the use experience of a user is improved.

In the present embodiment, the laundry treating apparatus may be a drum laundry treating apparatus having a drying function, i.e., a drum washing machine, a pulsator laundry treating apparatus having a drying function, i.e., a pulsator laundry washing machine, or the like. To further describe the solution of the present application, a mechanical structure of a clothes treating apparatus provided in the embodiments of the present application will be described below by taking a drum clothes treating apparatus as an example.

Referring to fig. 1 and 2, the laundry appliance 10 may include one or more of the following: the drying device comprises a shell 101, a door body 102, a barrel assembly 103, a motor 104, a water inlet valve 105, a water discharge valve 106, a display 107, a controller 108, a fan 109, a drying heating pipe 110, a collecting device 111 and a temperature detection device 112.

In some embodiments, a motor 104 is used to drive the inner barrel in rotation. The collecting device is used for collecting the current and the voltage of the motor to determine a power water inlet valve 105 of the motor, and is used for continuously opening a first time length of the water inlet valve and continuously closing the water inlet valve for a second time length according to a control time sequence in the drying process of the washing equipment so as to continuously inject water into the water inlet channel for the first time length and stop injecting water into the water inlet channel for the second time length. And a drying heating pipe 110 for heating the inside of the cavity of the inner cylinder. And the fan 109 is used for providing wind energy for the cavity of the inner cylinder. And a temperature detecting device 112 for detecting the temperature inside the inner cylinder.

In some embodiments, the collection device 111 is disposed on the motor 104.

In some embodiments, a water level detecting device (not shown) is further included for detecting the water level of the water in the water inlet channel. Specifically, when the water level height is greater than or equal to the height threshold, the water discharge process is performed to discharge the water in the water inlet passage.

In some embodiments, the housing 101 may form an overall appearance of the laundry device 10 and close the access between the inside and the outside of the laundry device 10 to prevent damage to the electrical components. In the embodiment provided in the present application, the casing 101 is provided in a substantially rectangular parallelepiped shape.

In some embodiments, the door 102 may be rotatably disposed on the casing 101, and the door 102 is opened and closed to access the laundry inside the laundry appliance 10. Specifically, the door body 102 may be rotatably connected to the casing 101 by a door rotation shaft.

In some embodiments, the laundry device 10 further includes a water heating pipe 117, and the water heating pipe 117 is disposed at the bottom of the water inlet passage of the laundry device; for heating the water in the water inlet channel.

Optionally, the door 102 may be made of a transparent material, so that a user can observe the state of the clothes when the laundry apparatus 10 operates.

In some embodiments, the cartridge assembly 103 is disposed inside the casing 101 for performing functions of the laundry device to wash laundry or dry laundry.

In some embodiments, the cartridge assembly 103 can include an inner cartridge 1031 and an outer cartridge 1032. Wherein, the inner tub 1031 is used for containing the target laundry, and the inner tub 1031 includes dehydration holes. The tub 1032 may be used to store wash water. When the drain valve 106 is closed, since the outer tub 1032 does not include other drain outlets, the washing water may be temporarily stored in the outer tub 1032.

In some embodiments, a gap is provided between the inner barrel 1031 and the outer barrel 1032. For example, when the laundry machine performs a spin-drying process, the laundry remains in the inner tub 1031, the motor 104 is controlled to drive the tub assembly 103 to rotate at a target spin-drying speed to spin the laundry, and during this process, the water flows out of the spin-drying holes, passes through the gap between the inner tub 1031 and the outer tub 1032, and flows into the drain duct, so as to spin-dry or dry the laundry.

In some embodiments, the motor 104 is configured to drive the rotation of the drum assembly 103 such that the rotating drum assembly 103 rotates the laundry and wash water within the drum assembly 103 to provide a power support for the washing machine 10 to run the washing program.

In some embodiments, the inlet valves 105 may be used to control the flow of water into the cartridge assembly 103. For example, when the inlet valve 105 receives a water inlet command from the controller 108, the inlet valve 105 is opened to allow water to flow into the cartridge assembly 103 of the laundry apparatus 10, so that the laundry apparatus 10 performs a washing process, a dehydration process, and other subsequent processes.

In some embodiments, the drain valve 106 is used for receiving a drain command from the controller 108 when the drain is required at the end of the washing process, and the drain valve 106 is opened to smoothly drain the washing wastewater.

In some embodiments, the display 107 may be a liquid crystal display, an organic light-emitting diode (OLED) display. The particular type, size, resolution, etc. of the display 107 are not limiting, and those skilled in the art will appreciate that the display 107 may be modified in performance and configuration as desired.

In some embodiments, the display 107 may be used to display a control panel or other image information of the laundry appliance 10. For example, the laundry device 10 may display current operation information of the laundry device, such as a type of a washing program, an operation time period of the washing program, a remaining operation time period, a washing water amount, and the like, through the display 107.

In some embodiments, the controller 108 refers to a device that can generate an operation control signal according to the instruction operation code and the timing signal, and instruct the laundry apparatus 10 to execute the control instruction. Illustratively, the controller 108 may be a Central Processing Unit (CPU), a general purpose processor Network Processor (NP), a Digital Signal Processor (DSP), a Programmable Logic Device (PLD), a microprocessor, a microcontroller, or any combination thereof. The controller may also be other devices with processing functions, such as a circuit, a device, or a software module, which is not limited in any way by the embodiments of the present application.

For example, the controller 108 may start to control the collecting device to collect a first current and a first voltage of the motor 104 after detecting that the motor operates at a first preset rotation speed for a first preset time, and determine a first target power according to a preset corresponding relationship among the current, the voltage, and the power. After the washing machine 10 continues to operate for a certain time, after detecting that the motor 104 operates at the second preset rotating speed for the second preset time, the collecting device is controlled to collect the second current and the second voltage of the motor to determine the second target power. Therefore, the target power difference is obtained based on the second target power and the first target power, so that the target weight of the target laundry is estimated according to the preset corresponding relationship between the power difference and the laundry weight.

Fig. 2 schematically shows a circuit system architecture diagram of the laundry appliance 10.

As shown in fig. 2, the laundry device 10 may further include: an early warning device 114, a communication device 115, a man-machine interaction device 116 and a power supply 113.

The motor 104, the water inlet valve 105, the water discharge valve 106, the display 107, the early warning device 114, the blower 109, the drying heating pipe 110, the acquisition device 111, the temperature detection device 112, the water heating pipe 117, the communication device 115, the human-computer interaction device 116 and the power supply 113 are all connected with the controller 108.

In some embodiments, the early warning device 114 is configured to send a corresponding prompt message to prompt the user of the stage of the drying process when the drying operation procedure is started or stopped.

In some embodiments, the communication device 115 is a component for communicating with an external device or an external server according to various communication protocol types. For example: the communication device may include at least one of a Wi-Fi chip, a bluetooth communication protocol chip, a wired ethernet communication protocol chip, or other network communication protocol chip or near field communication protocol chip, and an infrared receiver.

In some embodiments, the laundry device 10 may transmit the control signal and the data signal with a terminal device (e.g., a mobile phone, a tablet computer, a wearable mobile device, etc.) used by a user, other household devices (e.g., an air conditioner, a monitoring device, etc.), and a server through the communication device 115. For example, a user may arrive at an instruction to turn on the quiet mode through a cellular phone, the laundry apparatus 10 may receive the instruction through the communication device 115, and the controller 108 of the laundry apparatus 10 may turn on the quiet mode in response to the instruction to turn on the quiet mode.

In some embodiments, the human interaction device 116 is used for realizing the interaction between the user and the laundry apparatus 10. The human-computer interaction device 116 may include one or more of a physical key, a touch display panel, or a voice recognition device. For example, the user may start the washing machine 10 to operate through the human-computer interaction device, or set the washing program operated by the washing machine 10 through the human-computer interaction device 116.

In some embodiments, the power supply 113 provides power supply support for the laundry appliance 10 from power input from an external power source under the control of the controller 108.

Based on the laundry device, as shown in fig. 3, an embodiment of the present application provides a weighing method, which includes the following steps:

step S301, after the motor runs for a first preset time at a first preset rotating speed, controlling the acquisition device to acquire a first current and a first voltage of the motor so as to determine a first target power.

The first preset rotating speed corresponds to the second preset rotating speed. Generally, different motor performances correspond to different first and second preset rotation speeds.

For example, when the laundry device is weighed during the start-up phase, if the first preset rotation speed is 65 rpm, the second preset rotation speed is correspondingly set to 85 rpm. If the first preset rotating speed is 70 revolutions per minute, the second preset rotating speed is correspondingly set to be 90 revolutions per minute.

The first current and the second current each include a current in a first direction and a current in a second direction, and the first voltage and the second voltage each include a voltage in the first direction and a voltage in the second direction.

Illustratively, the first direction is a q-axis direction of the motor; the second direction is the d-axis direction of the motor.

The first preset time corresponds to the first preset rotating speed, so that the first current and the first voltage are acquired under the condition of stable operation at the first preset rotating speed, the stability of the first current and the first voltage is ensured, and the problem that the accuracy of the first target power is low due to the adoption of unstable current or unstable voltage is solved.

Step S302, after the motor runs for a second preset time at a second preset rotating speed, controlling the collecting device to collect a second current and a second voltage of the motor so as to determine a second target power.

The second preset rotating speed is greater than the first preset rotating speed. The second preset time and the first preset time may be equal duration or unequal duration, and both the second preset time and the first preset time may be specifically set according to the performance of the motor.

Corresponding to the corresponding relationship between the first preset time and the first preset rotation speed in step S301, the second preset time and the second preset rotation speed in this step are also correspondingly set, so as to ensure that the second current and the second voltage are collected under the condition of stably operating at the first preset rotation speed, so as to ensure the stability of the second current and the second voltage, and avoid the problem of low accuracy of the second target power caused by using unstable current or voltage.

In the process of determining the first target power and the second target power, the first target power and the second target power are determined based on a correspondence relationship in which the current and the voltage of the motor are positively correlated with the power. The corresponding relation can be embodied in the form of table correlation of currents with different values, voltages with different values and powers with different values, or embodied in the form of power function representation or power model among three parameters of the currents, the voltages and the powers.

For example, the correspondence relationship between the current and the voltage and the power can be obtained by the following formula (1).

P = K1 (Vd Id + Vq Iq) formula (1)

Where K1 is a power constant greater than or equal to 2 and less than 7, P is power, vd is a voltage in a first direction, vq is a voltage in a second direction, id is a current in the first direction, and Id is a current in the second direction.

The K1 is obtained after a plurality of tests and data analysis. Specifically, put into different weight and the known article of weight in the washing machine, the circulation is repeatedly carried out and is obtained electric current, voltage and power corresponding relation, obtain a large amount of data through many times of tests, then fit a large amount of data and obtain electric current, the relation curve that voltage and power correspond, be electric current, the corresponding relation that voltage and power are positive correlation promptly, thereby guarantee that the washing machine that the user used weighs the perception accurate, make washing machine can select suitable water level, promote the user to the washing effect of washing machine, the satisfaction of water consumption and power consumption, bring intelligent service experience for the user simultaneously.

According to the data analysis result, when the laundry device is ready to enter the dehydration stage, the target weight is determined by the following parameters: the first preset rotating speed is selected to be 75 revolutions per minute, and when the second preset rotating speed is correspondingly set to be 100 revolutions per minute, K1 of the first preset rotating speed is 5.5.

Step S303, determining the clothes weight corresponding to the target power difference as the target weight of the target clothes according to the corresponding relation between the power difference and the clothes weight.

The correspondence of the power difference to the laundry weight may be characterized as: and carrying out differentiation, integration or proportional operation on the corresponding power difference to obtain the weight of the clothes.

The target power difference is a difference between the second target power and the first target power. That is, the second target power subtracts the first target power to obtain a target power difference.

It should be noted that, when the weight of the laundry device loaded with the laundry increases, the resistance to the rotation of the motor of the laundry device also increases. When the rotation speed of the washing machine is increased, the rotation speed of the rotor of the motor and the intensity of the rotating magnetic field of the motor are also increased, the current input into the motor is also increased, and meanwhile, the corresponding voltage of the motor is also changed correspondingly, so that the power of the motor is also increased. Therefore, the corresponding relation of positive correlation exists between the weight of the clothes loaded on the washing equipment and the change value of the power, and the working principle of the washing equipment is met.

The technical solution shown in fig. 3 brings at least the following beneficial effects: this laundry device is in carrying out each item program process of doing washing, the target weight of foundation is based on two parameter index of electric current and voltage and determines, compare in the relevant art and adopt the target weight that single parameter index was confirmed, the precision of the target weight that this laundry device confirmed is higher to make laundry device when carrying out the program of doing washing, the operating parameter (for example, water consumption, washing time, the use amount of laundry agent etc.) that confirms according to target weight is more accurate, and then improve the washing effect, promote user's use and experience.

As an embodiment, referring to fig. 3, as shown in fig. 4, the step S301 may be specifically implemented by the following steps to obtain a more accurate first target power.

Step S301A, collecting a plurality of first currents and a plurality of first voltages after a motor runs for a first preset time at a first preset rotating speed; an average of the plurality of first currents is determined as a first target current, and an average of the plurality of first voltages is determined as a first target voltage.

In step S301B, the power corresponding to the first target current and the first target voltage is determined as the first target power, based on the correspondence relationship of the positive correlations of the current, the voltage, and the power of the motor.

The plurality of first currents and the plurality of first voltages correspond to each other one by one.

As an obtaining manner, after it is determined that the motor stably operates at the first preset rotation speed, different first currents and different first voltages at different time intervals within a preset time threshold may be collected to obtain the plurality of first currents and the plurality of first voltages.

As another obtaining manner, after it is determined that the motor stably operates at the first preset rotation speed, different first currents and different first voltages corresponding to different turns of rotation within preset turns of rotation of the inner drum of the laundry device may be collected to obtain the plurality of first currents and the plurality of first voltages.

Based on the acquired first currents and first voltages, after the acquired first currents and first voltages are acquired, and before an average value is determined, smoothing may be performed on the first currents and first voltages to remove the first currents and first voltages that are not uniformly distributed from the first currents and first voltages.

Illustratively, in a profile formed by the plurality of first currents and the plurality of first voltages, the currents and voltages corresponding to the non-smooth points in the profile are removed. The uneven point is a point at which the rate of change of the slope is too large.

In this embodiment, in order to avoid the influence of the abnormal voltage or the abnormal current collected in the case where the collected first current and the collected first voltage are abnormal suddenly, the first target power is determined based on the average value of the collected first currents and the average value of the collected first voltages, so as to ensure the accuracy of the first target power.

As another embodiment, referring to fig. 3, as shown in fig. 5, the step S302 may be implemented in detail by the following steps to determine the second target power more accurately.

Step S302A, after the motor runs for a second preset time at a second preset rotating speed, collecting a plurality of second currents and a plurality of second voltages; determining an average value of the plurality of second currents as a second target current; and determining an average value of the plurality of second voltages as a second target voltage.

Step S302B determines power corresponding to the second target current and the second target voltage as second target power according to a positive correlation between the current, the voltage, and the power of the motor.

As an obtaining manner, after it is determined that the motor stably operates at the second preset rotation speed, different second currents and different second voltages at different time intervals within a preset time threshold may be collected to obtain a plurality of second currents and a plurality of second voltages.

As another obtaining mode, after it is determined that the motor stably operates at the second preset rotating speed, different second currents and different second voltages corresponding to different turns within the preset turns of the rotation of the inner drum of the washing device can be collected to obtain a plurality of second currents and a plurality of second voltages.

Based on the obtained second currents and second voltages, after obtaining the plurality of second currents and the plurality of second voltages, and before determining an average value, the plurality of second currents and the plurality of second voltages may also be smoothed, and a process of the smoothing is the same as a process of the plurality of first currents and the plurality of first voltages in the above embodiment, and is not described herein again.

In this embodiment, in order to avoid the influence of the collected abnormal voltage or abnormal current in the case where the collected certain second current and certain second voltage are abnormal suddenly, the second target power is determined based on the average value of the collected second currents and the average value of the collected second voltages, so as to ensure the accuracy of the second target power.

As an embodiment, referring to fig. 3, as shown in fig. 6, after the controller performs step S303, the following steps may be further performed to determine the bearable weight range of the motor at different powers and rotation speeds.

Step S601, respectively determining a first target torque corresponding to the first target power and a second target torque corresponding to the second target power according to the correspondence between the power, the rotation speed, and the torque of the motor.

In the step, according to the corresponding relation among the power, the rotating speed and the torque of the motor, the torque corresponding to the first target power and the first preset rotating speed is determined as a first target torque, and the torque corresponding to the second target power and the second preset rotating speed is determined as a second target torque.

Step S602, respectively determining a first rated weight corresponding to the first target torque and a second rated weight corresponding to the second target torque according to a corresponding relationship between the torque and the rated weight of the motor.

Wherein the nominal weight represents the maximum weight of the motor load at a certain torque.

In this step, the torque of the motor reflects the maximum weight that the motor can bear, i.e., the rated weight, and based on this, the corresponding relationship between the rated weight and the torque is preset in the laundry device.

In some embodiments, the torque is also referred to as torque.

The corresponding relation among the power, the rotating speed and the torque of the motor can be represented by a representation form of a torque function or a representation form of a power model.

Illustratively, the three parameters of power, rotation speed and torque are expressed by the following formula (2).

Te = K2 × P/ω formula (2)

Where K2 is a constant, te is the torque of the motor, P is the power of the motor, and ω is the rotational speed of the motor.

The value of K2 is usually in the range of 9 to 16. Typically, K2 is 13.05.

In some embodiments, a range of the first rated weight and the second rated weight is used as the target weight range, so that the target weight is determined to be reasonable by determining that the target weight is within the target weight range.

Illustratively, if the first nominal weight is 1 and the second nominal weight is 9, then the target weight range [ first nominal weight, second nominal weight ] is [1,9].

In this embodiment, the controller first obtains the first target torque and the second target torque according to the power, the rotation speed, and the torque correspondence relationship of the motor. And then combining the corresponding relation between the torque and the rated weight of the motor to obtain a first rated weight and a second rated weight of the motor energy load, and using the first rated weight and the second rated weight as a basis for judging whether the target weight is reasonable or not so as to further ensure the accuracy of the target weight.

Based on the embodiment of fig. 6, a specific implementation process of further determining the accuracy of the target weight in the target weight range formed by the first rated weight and the second rated weight, i.e., the range greater than or equal to the first rated weight and less than or equal to the second rated weight, is as follows in the step of fig. 7.

And step S701, when the target weight is greater than or equal to the first rated weight and less than or equal to the second rated weight, determining the operation parameters of the washing equipment according to the target weight.

The operating parameters include at least one or more of: washing time, dewatering time, water inflow and the like.

In the implementation step, after the target weight is determined to be in a reasonable range based on the target weight range to which the target weight belongs when the target weight is accurate, the target weight is adopted to adjust the operation parameters of the laundry equipment so as to ensure the accuracy of the operation parameters and the reliability of the laundry equipment in the operation process.

Step S702, when the target weight is smaller than the first rated weight or larger than the second rated weight, early warning information is sent, and the early warning information indicates that the target weight is inaccurate.

In the implementation step, based on the target weight range to which the target weight belongs when the target weight is accurate, warning information is sent out after the target weight is determined to be in an unreasonable range so as to prompt a user that the laundry equipment has a weighing fault, and therefore misoperation that the laundry equipment still executes a laundry program in a fault state is reduced.

As a specific embodiment, the weighing process of the laundry device is described in detail below with reference to fig. 8.

In step S801, the controller controls the detection device to detect the rotation speed of the motor.

And S802, judging whether the rotating speed of the motor reaches a first preset rotating speed, if not, returning to S801, and if so, entering S803.

Step S803, after it is detected that the motor stably operates at the first preset rotation speed, acquiring first current and first voltage in the q-axis direction and the d-axis direction of the motor to obtain a first target power.

In this step, the first current and the first voltage are collected and determined with 32-bit accuracy.

And step S804, judging whether the rotating speed of the motor reaches a second preset rotating speed, if so, entering step S805, and if not, returning to step S804.

Step S805, after detecting that the motor stably operates at a second preset rotation speed, acquiring a second current and a second voltage in the q-axis direction and the d-axis direction of the motor to obtain a second target power.

In this step, the second current and the second voltage are acquired with 32-bit accuracy.

In step S806, the difference between the second target power and the first target power is used as the target power difference.

In step S807, a target weight is determined based on the correspondence between the power difference and the weight.

In this step, the target weight is determined with 16-bit accuracy.

Step 808, determining whether the target weight is within the preset accuracy range, if yes, entering step 809, and if no, returning to step 801.

And step S809, finishing weighing, and entering a related washing program after weighing.

It can be seen that the foregoing describes the solution provided by the embodiments of the present application primarily from a methodological perspective. In order to implement the functions, the embodiments of the present application provide corresponding hardware structures and/or software modules for performing the respective functions. Those of skill in the art will readily appreciate that the various illustrative modules and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

In the embodiment of the present application, the controller may be divided into the functional modules according to the above method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. Optionally, the division of the modules in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation.

The embodiment of the application also provides a hardware structure schematic diagram of the controller. As shown in fig. 9, the controller 108 includes a processor 901, and optionally, a memory 902 and a communication interface 903 connected to the processor 901. The processor 901, memory 902, and communication interface 903 are connected by a bus 904.

The processor 901 may be a Central Processing Unit (CPU), a Network Processor (NP), a Digital Signal Processor (DSP), a microprocessor, a microcontroller, a Programmable Logic Device (PLD), or any combination thereof. The processor 901 may also be any other device having a processing function, such as a circuit, a device, or a software module. The processor 901 may also include a plurality of CPUs, and the processor 901 may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, or processing cores that process data (e.g., computer program instructions).

The memory 902 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that can store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a compact disk read-only memory (CD-ROM) or other optical disk storage, optical disk storage (including compact disk, laser disk, optical disk, digital versatile disk, blu-ray disk, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, which are not limited by the embodiments of the present application. The memory 902 may be separate or integrated with the processor 901. The memory 902 may include, among other things, computer program code. The processor 901 is configured to execute the computer program codes stored in the memory 902, so as to implement the weighing method of the laundry device provided by the embodiment of the present application.

Communication interface 903 may be used for communicating with other devices or communication networks (e.g., ethernet, radio Access Network (RAN), wireless Local Area Networks (WLAN), etc.).

The bus 904 may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus 904 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown in FIG. 9, but this does not indicate only one bus or one type of bus.

The embodiment of the present application further provides a computer-readable storage medium, which includes computer-executable instructions, and when the computer-executable instructions are run on a computer, the computer is enabled to execute any one of the weighing methods of the laundry devices provided in the above embodiments.

The embodiment of the present application further provides a computer program product containing computer executable instructions, which when run on a computer, causes the computer to execute any one of the weighing methods of the laundry devices provided in the above embodiments.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented using a software program, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer-executable instructions. The processes or functions according to the embodiments of the present application are generated in whole or in part when the computer-executable instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer executable instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, the computer executable instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). Computer-readable storage media can be any available media that can be accessed by a computer or can comprise one or more data storage devices, such as servers, data centers, and the like, that can be integrated with the media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a Solid State Disk (SSD)), among others.

While the present application has been described in connection with various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed application, from a review of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

Although the present application has been described in conjunction with specific features and embodiments thereof, it will be evident that various modifications and combinations can be made thereto without departing from the spirit and scope of the application. Accordingly, the specification and figures are merely exemplary of the present application as defined in the appended claims and are intended to cover any and all modifications, variations, combinations, or equivalents within the scope of the present application. It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

The above description is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A laundry appliance is characterized by comprising a controller, a motor and a collecting device, wherein the motor and the collecting device are connected with the controller;

the motor is used for driving the washing equipment to rotate;

the collecting device is used for collecting the current and the voltage of the motor;

the controller is configured to:

controlling the acquisition device to acquire a first current and a first voltage of the motor after the motor runs at a first preset rotating speed for a first preset time so as to determine a first target power;

after the motor runs at a second preset rotating speed for a second preset time, controlling the acquisition device to acquire a second current and a second voltage of the motor so as to determine a second target power; the second preset rotating speed is greater than the first preset rotating speed;

determining the clothes weight corresponding to the target power difference as the target weight of the target clothes according to the corresponding relation between the power difference and the clothes weight; the target power difference is a difference between the second target power and the first target power.

2. A laundry appliance as claimed in claim 1, wherein the controller is further configured to control the pick-up device to pick up a first current and a first voltage of the motor to determine a first target power, and is further configured to:

collecting a plurality of said first currents and a plurality of said first voltages;

determining an average of a plurality of the first currents as a first target current, and determining an average of a plurality of the first voltages as a first target voltage;

and determining the power corresponding to the first target current and the first target voltage as the first target power according to the positive correlation correspondence relationship among the current, the voltage and the power of the motor.

3. A laundry appliance as claimed in claim 1, wherein the controller, when executing the control of the collecting device to collect the second current and the second voltage of the motor to determine the second target power, is configured to:

collecting a plurality of second currents and a plurality of second voltages;

determining an average value of a plurality of the second currents as a second target current; and determining an average of a plurality of the second voltages as a second target voltage;

and determining the power corresponding to the second target current and the second target voltage as the second target power according to the positive correlation correspondence relationship among the current, the voltage and the power of the motor.

4. A laundry appliance as claimed in claim 1, wherein the controller is further configured to:

respectively determining a first target torque corresponding to the first target power and a second target torque corresponding to the second target power according to the corresponding relation among the power, the rotating speed and the torque of the motor;

according to the corresponding relation between the torque and the rated weight of the motor, respectively determining a first rated weight corresponding to the first target torque and a second rated weight corresponding to the second target torque; the nominal weight characterizes the maximum weight of the motor load at a certain torque.

5. A laundry appliance as claimed in claim 4, wherein the controller is further configured to:

and when the target weight is greater than or equal to the first rated weight and less than or equal to the second rated weight, determining the operation parameters of the laundry device according to the target weight.

6. A laundry appliance as claimed in claim 5, wherein the controller is further configured to:

and when the target weight is smaller than the first rated weight or larger than the second rated weight, sending early warning information, wherein the early warning information indicates that the target weight is inaccurate.

7. A laundry appliance as claimed in any one of claims 1 to 6, wherein the first and second currents each comprise a current in a first direction and a current in a second direction, and the first and second voltages each comprise a voltage in the first direction and a voltage in the second direction.

8. A method of weighing a laundry appliance, the method comprising:

after the motor runs at a first preset rotating speed for a first preset time, controlling a collecting device to collect a first current and a first voltage of the motor so as to determine a first target power;

after the motor runs at a second preset rotating speed for a second preset time, controlling the acquisition device to acquire a second current and a second voltage of the motor so as to determine a second target power; the second preset rotating speed is greater than the first preset rotating speed;

determining the clothes weight corresponding to the target power difference as the target weight of the target clothes according to the corresponding relation between the power difference and the clothes weight; the target power difference is a difference between the second target power and the first target power.

9. The weighing method according to claim 8, wherein the controlling the collection device to collect a first current and a first voltage of the motor to determine a first target power comprises:

collecting a plurality of said first currents and a plurality of said first voltages;

determining an average of a plurality of the first currents as a first target current, and determining an average of a plurality of the first voltages as a first target voltage;

and determining the first target power corresponding to the first target current and the first target voltage according to the forward correlation corresponding relation between the current, the voltage and the target power.

10. The weighing method according to claim 8, wherein the controlling the collecting device to collect a second current and a second voltage of the motor to determine a second target power comprises:

collecting a plurality of second currents and a plurality of second voltages;

determining an average value of a plurality of the second currents as a second target current; and determining an average of a plurality of the second voltages as a second target voltage;

and determining the second target power corresponding to the second target current and the second target voltage according to the forward correlation corresponding relation between the current, the voltage and the target power.

Images