CN113186688A - Method and device for weighing clothes in drum washing machine - Google Patents
Method and device for weighing clothes in drum washing machine Download PDFInfo
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- CN113186688A CN113186688A CN202110472064.1A CN202110472064A CN113186688A CN 113186688 A CN113186688 A CN 113186688A CN 202110472064 A CN202110472064 A CN 202110472064A CN 113186688 A CN113186688 A CN 113186688A
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- 238000005406 washing Methods 0.000 title claims abstract description 245
- 238000000034 method Methods 0.000 title claims abstract description 79
- 238000005303 weighing Methods 0.000 title claims abstract description 50
- 230000008569 process Effects 0.000 claims description 27
- 238000012544 monitoring process Methods 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims description 13
- 230000004580 weight loss Effects 0.000 claims description 12
- 238000012806 monitoring device Methods 0.000 claims description 2
- 230000001186 cumulative effect Effects 0.000 claims 3
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F33/00—Control of operations performed in washing machines or washer-dryers
- D06F33/30—Control of washing machines characterised by the purpose or target of the control
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/04—Signal transfer or data transmission arrangements
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/14—Arrangements for detecting or measuring specific parameters
- D06F34/18—Condition of the laundry, e.g. nature or weight
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/02—Characteristics of laundry or load
- D06F2103/04—Quantity, e.g. weight or variation of weight
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/24—Spin speed; Drum movements
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/44—Current or voltage
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Abstract
The invention provides a method and a device for weighing clothes in a drum washing machine, wherein the method comprises the following steps: acquiring first power of the drum washing machine at a first preset rotating speed; acquiring second power of the drum washing machine from a first preset rotating speed to a second preset rotating speed; the second preset rotating speed is greater than the first preset rotating speed; judging whether the first power is greater than a first power threshold value or not and whether the second power is greater than a second power threshold value or not; if the judgment results are yes, judging whether the power difference value between the second power and the first power is smaller than a first preset threshold value; if so, determining that the drum washing machine is in a half-load state; if not, the drum washing machine is determined to be in a full load state. The scheme can improve the accuracy rate of the drum washing machine for weighing clothes.
Description
Technical Field
The invention relates to the technical field of electric appliances, in particular to a method and a device for weighing clothes in a drum washing machine.
Background
The present drum washing machine may determine the weight of laundry based on weighing detection, thereby determining the corresponding wash water level and rinse water level according to the weight of laundry. Generally, for a thin-wall washing machine, as the weight of the clothes increases, the clothes can be pushed against the door, so that the friction force increases when the clothes are pushed against the door, and the weighing detection result is affected. However, the existing drum washing machine does not consider the situation that the weight of the clothes reaches the half load, and the weight of the clothes is still determined based on the corresponding relation curve of the electric energy of the drum washing machine and the weight of the clothes, but because the weight of the clothes abuts against the door, the friction force is increased, a weighing result larger than the actual weight of the clothes is obtained, and even the half load is mistakenly weighed into full load, so that the clothes weighing accuracy of the drum washing machine is low.
Disclosure of Invention
The invention provides a method and a device for weighing clothes in a drum washing machine, which can improve the accuracy of weighing the clothes in the drum washing machine.
In a first aspect, an embodiment of the present invention provides a method for weighing laundry in a drum washing machine, including:
acquiring first operation data of the drum washing machine at a first preset rotating speed;
obtaining a first power of the drum washing machine according to the first operation data;
acquiring second operation data of the drum washing machine from the first preset rotating speed to a second preset rotating speed; the second preset rotating speed is greater than the first preset rotating speed;
obtaining a second power of the drum washing machine according to the second operation data;
judging whether the first power is greater than a first power threshold value or not and whether the second power is greater than a second power threshold value or not;
if the judgment results are yes, judging whether the power difference value between the second power and the first power is smaller than a first preset threshold value;
if the power difference value between the second power and the first power is smaller than the first preset threshold, determining that the drum washing machine is in a half-load state; wherein the half load condition is used in the drum washing machine to characterize laundry weight as half of a rated capacity of the drum washing machine;
if the power difference value between the second power and the first power is not less than the first preset threshold value, determining that the drum washing machine is in a full-load state; wherein the full load condition is used for representing that the weight of clothes in the drum washing machine is the rated capacity of the drum washing machine.
Optionally, the determining whether the first power is greater than a first power threshold and the second power is greater than a second power threshold includes;
if the judgment result is negative, determining that the drum washing machine is in a low-load state; wherein the low load state is used for representing that the weight of clothes in the drum washing machine is less than half of the rated capacity of the drum washing machine;
performing difference operation on the second power and the first power to obtain a power difference value;
determining the clothes weight corresponding to the power difference value from a preset clothes weight comparison table according to the power difference value; wherein, the preset clothes weight comparison table stores the corresponding relation between the power difference and the clothes weight.
Optionally, the first operation data includes current, voltage and accumulated rotation angle monitored at different times;
the obtaining of the first power of the drum washing machine according to the first operation data includes:
determining a first number of rotations of the drum washing machine according to the accumulated rotation angle;
determining the first power based on the current, the voltage, and the first number of revolutions included in the first operating data;
wherein the first power is determined by the following formula;
wherein, P1For characterizing the first power; gamma ray1The method is used for representing the m-th monitored accumulated rotation angle at the first preset rotation speed;
for the first number of revolutions; m is used for representing the number of times of monitoring the first operation data at different time; u shape1iThe voltage detection circuit is used for representing the voltage monitored at the ith time at the first preset rotating speed; i is1iFor characterizing the current monitored i-th time at said first preset rotation speed, a for characterizing a preset number of rotations.
Optionally, the second operation data includes current, voltage, and accumulated rotation angle monitored at different times;
the obtaining of the second power of the drum washing machine according to the second operation data includes:
determining a second number of rotations of the drum washing machine according to the accumulated rotation angle;
determining the second power according to the current, the voltage and the second number of revolutions included in the second operating data;
wherein the second power is determined by the following formula;
wherein, P2For characterizing the second power; gamma ray2The system is used for representing the k-th monitored accumulated rotation angle in the process from the first preset rotation speed to the second preset rotation speed;
for characterizing the second number of rotations; k is used for representing the number of times of monitoring the second operation data at different times; u shape2jThe voltage monitoring device is used for representing the monitored voltage at the jth time in the process from the first preset rotating speed to the second preset rotating speed; i is2jAnd a is used for representing the current monitored at the jth time in the process from the first preset rotating speed to the second preset rotating speed, and a is used for representing the preset number of rotations.
Optionally, after the determining that the drum washing machine is in a full load state, the method further comprises:
judging whether the power difference value between the second power and the first power is larger than a second preset threshold value or not; wherein the second preset threshold is greater than the first preset threshold;
if yes, determining that the drum washing machine is in an overload state, wherein the overload state is used for representing that the weight of clothes in the drum washing machine exceeds the rated capacity of the drum washing machine;
performing difference operation on the power difference and the second preset threshold to obtain an overload power difference;
determining the weight of the clothes corresponding to the overload power difference value in a preset overload weight comparison table as the weight loss according to the overload power difference value;
generating prompt information according to the weight loss weight, and sending the prompt information to a user; the prompt message is used for reminding a user to correspondingly take out the clothes with the reduced weight from the drum washing machine.
In a second aspect, an embodiment of the present invention further provides a laundry weighing device for a drum washing machine, including:
the acquisition module is used for acquiring first operation data of the drum washing machine at a first preset rotating speed;
the first operation module is used for obtaining first power of the drum washing machine according to the first operation data obtained by the obtaining module;
the acquisition module is further used for acquiring second operation data of the drum washing machine from the first preset rotating speed to a second preset rotating speed; the second preset rotating speed is greater than the first preset rotating speed;
the second operation module is used for obtaining second power of the drum washing machine according to the second operation data obtained by the obtaining module;
the first judgment module is used for judging whether the first power obtained by the first operation module is greater than a first power threshold value or not and whether the second power obtained by the second operation module is greater than a second power threshold value or not;
the second judging module is used for judging whether the power difference value between the second power and the first power is smaller than a first preset threshold value or not when the judging result of the first judging module is yes;
the weight determining module is used for determining that the drum washing machine is in a half-load state when the judgment result of the second judging module is yes; wherein the half-load state is used for representing that the weight of clothes in the drum washing machine is half of the rated capacity of the drum washing machine;
the weight determining module is further used for determining that the drum washing machine is in a full-load state when the judgment result of the second judging module is negative; wherein the full load condition is used for representing that the weight of clothes in the drum washing machine is the rated capacity of the drum washing machine.
Optionally, the first determining module is further configured to perform the following operations:
if the judgment result is negative, determining that the drum washing machine is in a low-load state; wherein the low load state is used for representing that the weight of clothes in the drum washing machine is less than half of the rated capacity of the drum washing machine;
performing difference operation on the second power and the first power to obtain a power difference value;
determining the clothes weight corresponding to the power difference value from a preset clothes weight comparison table according to the power difference value; wherein, the preset clothes weight comparison table stores the corresponding relation between the power difference and the clothes weight.
Optionally, the first operation data includes current, voltage and accumulated rotation angle monitored at different times;
the first operation module is further configured to perform the following operations:
determining a first number of rotations of the drum washing machine according to the accumulated rotation angle;
determining the first power based on the current, the voltage, and the first number of revolutions included in the first operating data;
wherein the first power is determined by the following formula;
wherein, P1For characterizing the first power; gamma ray1The method is used for representing the m-th monitored accumulated rotation angle at the first preset rotation speed;
for the first number of revolutions; m is used for representing the number of times of monitoring the first operation data at different time; u shape1iThe voltage detection circuit is used for representing the voltage monitored at the ith time at the first preset rotating speed; i is1iFor characterizing the current monitored i-th time at said first preset rotation speed, a for characterizing a preset number of rotations.
In a third aspect, the present invention further provides a laundry weighing device for a drum washing machine, comprising: at least one memory and at least one processor;
the at least one memory to store a machine readable program;
the at least one processor is configured to invoke the machine readable program to execute the method for weighing laundry in a drum washing machine provided by the first aspect or any one of the possible implementations of the first aspect.
In a fourth aspect, the present invention further provides a computer readable medium having stored thereon computer instructions, which, when executed by a processor, cause the processor to execute the method for weighing laundry in a drum washing machine provided in the first aspect or any one of the possible implementations of the first aspect.
According to the scheme, the method and the device for weighing the clothes of the drum washing machine provided by the embodiment of the invention firstly obtain the first power of the drum washing machine at the first preset rotating speed and the second power of the drum washing machine in the process from the first preset rotating speed to the second preset rotating speed, and then determine the weight of the clothes in the drum washing machine by comparing the first power with the first power threshold, the second power with the second power threshold, so as to clearly distinguish the half-load state from the full-load state. Therefore, according to the power of the drum washing machine at different preset rotating speeds, the comparison and judgment are carried out by the method provided by the invention, the half-load state and the full-load state of the drum washing machine are clearly distinguished, and the condition that the half-load state is judged to be the full-load state by mistake due to the door-supporting condition is avoided, so that the clothes weighing accuracy of the drum washing machine is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a flow chart of a method for weighing laundry in a drum washing machine according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an apparatus for weighing laundry in a drum washing machine according to an embodiment of the present invention;
FIG. 3 is a schematic view of a drum washing machine clothes weighing apparatus according to one embodiment of the present invention;
FIG. 4 is a flow chart of another method for weighing laundry in a drum washing machine according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer and more complete, the technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention, and based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the scope of the present invention.
As described in the background art, in the prior art, the drum washing machine determines the weight of the laundry based on the corresponding relationship curve between the electric energy and the weight of the laundry during operation of the drum washing machine, and does not consider the situation that the laundry hits the door to affect the weighing result of the laundry, so that the laundry weighing accuracy of the drum washing machine is low.
For the thin-wall drum washing machine, the half-load has the door-abutting condition, the friction force changes greatly, the actual half-load weighing value sometimes exceeds the full load, the full half load is difficult to distinguish, and the automatic weighing water inlet level is influenced. It is therefore possible to consider a clear distinction between the half-loaded and full-loaded states based on the power variations of the drum washing machine.
The foregoing is the concept provided by the present invention, and specific implementations of the concept provided by the present invention are described below.
As shown in fig. 1, an embodiment of the present invention provides a method for weighing laundry in a drum washing machine, which is applied to a laundry weighing device of the drum washing machine, and the method may include the following steps:
step 101: acquiring first operation data of the drum washing machine at a first preset rotating speed;
step 102: obtaining a first power of the drum washing machine according to the first operation data;
step 103: acquiring second operation data of the drum washing machine from a first preset rotating speed to a second preset rotating speed; the second preset rotating speed is greater than the first preset rotating speed;
step 104: obtaining a second power of the drum washing machine according to the second operation data;
step 105: judging whether the first power is greater than a first power threshold value or not and whether the second power is greater than a second power threshold value or not;
step 106: if the judgment results are yes, judging whether the power difference value between the second power and the first power is smaller than a first preset threshold value; if yes, executing step 107, otherwise, executing step 108;
step 107: determining that the drum washing machine is in a half-load state; the half-load state is used for representing that the weight of clothes in the drum washing machine is half of the rated capacity of the drum washing machine;
step 108: determining that the drum washing machine is in a full-load state; wherein, the full load state is used for representing that the weight of clothes in the drum washing machine is the rated capacity of the drum washing machine.
The clothes weighing method of the drum washing machine provided by the embodiment of the invention comprises the steps of firstly obtaining the first power of the drum washing machine at a first preset rotating speed and the second power of the drum washing machine in the process from the first preset rotating speed to a second preset rotating speed, and then determining the weight of clothes in the drum washing machine by comparing the first power with a first power threshold, and comparing the second power with a second power threshold, so as to clearly distinguish a half-load state from a full-load state. Therefore, according to the power of the drum washing machine at different preset rotating speeds, the comparison and judgment are carried out by the method provided by the invention, the half-load state and the full-load state of the drum washing machine are clearly distinguished, and the condition that the half-load state is judged to be the full-load state by mistake due to the door-supporting condition is avoided, so that the clothes weighing accuracy of the drum washing machine is improved.
It should be noted that the first power threshold and the second power threshold are obtained by actually debugging the drum washing machine; wherein the first power threshold and the second power threshold of the drum washing machine of different product types are different. For example, for a drum washing machine with a rated capacity of 10Kg, first, the first power and the second power of the drum washing machine corresponding to different clothes weights (e.g., 0Kg, 0.5Kg, 1Kg, 1.5Kg, 2Kg, 2.5Kg, 3Kg, 3.5Kg, 4Kg) of 0Kg to 4Kg (i.e., low load) are repeatedly tested; the first and second powers of the drum washing machine corresponding to the weights of 5Kg (i.e., half load) and 10Kg (i.e., full load) of laundry were then repeatedly tested. The first power threshold value is more than the maximum first power under low load and less than the minimum first power under half load and full load; similarly, the second power threshold is greater than the maximum second power at low load and less than the minimum second power at half load and full load. Therefore, the corresponding first power threshold and the second power threshold can be determined more accurately corresponding to different types of products, and the weight of clothes in the drum washing machine can be determined accurately by setting the first power threshold and the second power threshold.
It should be noted that the first power is obtained when the drum washing machine stably operates at a first preset rotation speed; the second power is obtained during the process that the drum washing machine is increased from the first preset rotating speed to the second preset rotating speed at the preset acceleration.
Alternatively, on the basis of the method for weighing laundry in a drum washing machine as shown in fig. 1, step 105 determines whether the first power is greater than a first power threshold value, and whether the second power is greater than a second power threshold value, including;
if the judgment result is negative, determining that the drum washing machine is in a low-load state; wherein, the low-load state is used for representing that the weight of clothes in the drum washing machine is less than half of the rated capacity of the drum washing machine;
performing difference operation on the second power and the first power to obtain a power difference value;
determining the weight of the clothes corresponding to the power difference value from a preset clothes weight comparison table according to the power difference value; wherein, the preset clothes weight comparison table stores the corresponding relation between the power difference and the clothes weight.
In the embodiment of the invention, if the first power obtained in the current operation process is not more than the first power threshold value and the second power is not more than the second power threshold value, the drum washing machine is determined to be in a low-load state, namely, the weight of clothes in the drum washing machine is less than half of the rated capacity of the drum washing machine. Because the door-resisting condition does not exist in the drum washing machine in the low-load state, the power difference value can be obtained by carrying out difference operation on the second power and the first power, and then the weight of the clothes corresponding to the power difference value is determined according to the pre-stored clothes weight comparison table, so that the weight of the clothes in the current drum washing machine can be determined quickly and accurately.
Optionally, in the embodiment of the present invention, determining, according to the power difference, a laundry weight corresponding to the power difference from a preset laundry weight comparison table includes:
determining the laundry weight from the power difference value by the following formula;
wherein m is used for representing the weight of the clothes in the low-load state; c is used for characterizing constant term parameters of the corresponding drum washing machine; Δ P is used to characterize the power difference; gamma ray2The device is used for representing the monitored accumulated rotation angle in the process from the first preset rotation speed to the second preset rotation speed; omega1The device is used for representing a first preset rotating speed; omega2The second preset rotating speed is used for representing a second preset rotating speed; m is0For characterizing the drum dry weight of a drum washing machine.
In the embodiment of the invention, the drum washing machine is driven to accelerate from a first preset rotating speed to a second preset rotating speed, the first power of the drum washing machine at the first preset rotating speed and the second power of the drum washing machine in the accelerating process are obtained, namely the electric energy consumed by the drum washing machine is obtained, and the effective electric energy used for accelerating the rotation of the drum after removing the loss electric energy in the operation process is determined through a constant parameter, so that the effective electric energy is determined to be the added kinetic energy of the drum with a load (namely clothes), and the weight of the clothes in the drum is accurately calculated according to the kinetic energy.
It should be noted that the constant term parameters of the drum washing machine for different product types are different.
Optionally, on the basis of the method for weighing clothes in the drum washing machine shown in fig. 1, the first operation data comprises current, voltage and accumulated rotation angle monitored at different times;
determining a first number of rotations of the drum washing machine according to the accumulated rotation angle;
determining a first power based on the current, the voltage, and the first number of revolutions included in the first operating data;
wherein the first power is determined by the following formula;
wherein, P1For characterizing the first power; gamma ray1The method is used for representing the m-th monitored accumulated rotation angle at a first preset rotation speed;
for a first number of revolutions; m is used for representing the times of monitoring the first operation data at different time; u shape1iThe voltage detection circuit is used for representing the voltage monitored at the ith time at a first preset rotating speed; i is1iFor characterizing the current monitored i-th time at a first preset rotation speed, and a for characterizing a preset number of rotations.
In the embodiment of the invention, the first operation data comprises current, voltage and accumulated rotation angle of the drum washing machine which is monitored at different times and stably operates at the first preset rotation speed. Firstly, periodically acquiring the current, the voltage and the accumulated rotation angle of the drum washing machine in a first time period; secondly, calculating the current instantaneous power of the drum washing machine during each monitoring, summing and averaging to obtain the average power of the drum washing machine for the first rotating circle number; then, the total number of rotations in the time period is determined by accumulating the rotation angles, so as to calculate the average power of the drum washing machine for rotating a circles. Therefore, the power of the drum washing machine in the current running state can be accurately acquired through the periodically monitored current and voltage, and the half load and the full load can be further accurately distinguished in the follow-up process.
Optionally, on the basis of the method for weighing clothes in the drum washing machine shown in fig. 1, the second operation data comprises current, voltage and accumulated rotation angle monitored at different times;
determining a second number of rotations of the drum washing machine according to the accumulated rotation angle;
determining a second power based on the current, the voltage, and the second number of revolutions included in the second operating data;
wherein the second power is determined by the following formula;
wherein, P2For characterizing the second power; gamma ray2The method is used for representing the k-th monitored accumulated rotation angle in the process from the first preset rotation speed to the second preset rotation speed;
for characterizing a second number of rotations; k is used for representing the number of times of monitoring the second operation data at different time; u shape2jThe voltage detection circuit is used for representing the j-th monitored voltage in the process from the first preset rotating speed to the second preset rotating speed; i is2jThe method is used for representing the j-th monitored current in the process from the first preset rotating speed to the second preset rotating speed, and a is used for representing the preset number of rotations.
In an embodiment of the present invention, the second operation data includes current, voltage, and accumulated rotation angle of the drum washing machine accelerated from the first preset rotation speed to the second preset rotation speed, which are monitored at different times. Firstly, periodically acquiring the current, the voltage and the accumulated rotation angle of the drum washing machine in a second time period; secondly, calculating the current instantaneous power of the drum washing machine during each monitoring, summing and averaging to obtain the average power of the drum washing machine for the second number of rotating circles; then, the total number of rotations of the drum washing machine in the second time period is determined by accumulating the rotation angles, so that the average power of a rotations of the drum washing machine is calculated subsequently. Therefore, the first power and the second power are both limited to be the average power for calculating the rotation a circle, unnecessary errors in the process of obtaining the first power and the second power can be reduced as much as possible, and the detection precision of the weight of the clothes is further improved on the premise of keeping consistency.
Optionally, on the basis of the method for weighing the laundry in the drum washing machine shown in fig. 1, after determining that the drum washing machine is in the full load state, the method further includes:
judging whether the power difference value between the second power and the first power is larger than a second preset threshold value or not; the second preset threshold is larger than the first preset threshold;
if so, determining that the drum washing machine is in an overload state, wherein the overload state is used for representing that the weight of clothes in the drum washing machine exceeds the rated capacity of the drum washing machine;
performing difference operation on the power difference and a second preset threshold to obtain an overload power difference;
determining the weight of the clothes corresponding to the overload power difference value in a preset overload weight comparison table as the weight loss according to the overload power difference value;
generating prompt information according to the weight loss weight, and sending the prompt information to a user; the prompt message is used for reminding a user to correspondingly take out the clothes with reduced weight from the drum washing machine.
In the embodiment of the invention, after the drum washing machine is determined to be in the full load state, whether the drum washing machine is in the overload state or not can be determined according to the power difference value between the second power and the first power, if the power difference value is larger than a second preset threshold value, the weight of clothes in the drum washing machine is determined to exceed the rated capacity of the drum washing machine, the current drum washing machine needs to be lightened, the lightened weight is determined, and the lightened weight is sent to a user in the form of prompt information, so that the weight of the residual clothes in the drum washing machine cannot exceed the rated capacity, abnormal operation of the drum washing machine is avoided, and the service life of the drum washing machine is prolonged.
Specifically, the power difference and a second preset threshold are subjected to difference operation, so that an overload power difference can be obtained; determining the weight of clothes corresponding to the overload power difference value in a preset overload weight comparison table as a weight loss weight according to the overload power difference value, generating prompt information according to the weight loss weight, and sending the prompt information to a user; the prompt information is used for reminding a user of correspondingly taking out the clothes with the reduced weight from the drum washing machine; the preset overload weight comparison table stores the corresponding relation between the overload power difference and the weight of the clothes.
As shown in fig. 2 and 3, the embodiment of the invention provides a clothes weighing device of a drum washing machine. The device embodiments may be implemented by software, or by hardware, or by a combination of hardware and software. From a hardware level, as shown in fig. 2, a hardware structure diagram of an apparatus in which a laundry weighing device of a drum washing machine according to an embodiment of the present invention is located is provided, where the apparatus in the embodiment may generally include other hardware, such as a forwarding chip responsible for processing a message, in addition to the processor, the memory, the network interface, and the nonvolatile memory shown in fig. 2. Taking a software implementation as an example, as shown in fig. 3, as a logical apparatus, the apparatus is formed by reading, by a CPU of a device in which the apparatus is located, corresponding computer program instructions in a non-volatile memory into a memory for execution. As shown in fig. 3, an embodiment of the present invention provides a laundry weighing device for a drum washing machine, including:
an obtaining module 301, configured to obtain first operation data of the drum washing machine at a first preset rotation speed;
a first operation module 302, configured to obtain a first power of the drum washing machine according to the first operation data obtained by the obtaining module 301;
the obtaining module 301 is further configured to obtain second operation data of the drum washing machine from a first preset rotating speed to a second preset rotating speed; the second preset rotating speed is greater than the first preset rotating speed;
a second operation module 303, configured to obtain a second power of the drum washing machine according to the second operation data obtained by the obtaining module 301;
a first determining module 304, configured to determine whether the first power obtained by the first calculating module 302 is greater than a first power threshold, and whether the second power obtained by the second calculating module 303 is greater than a second power threshold;
a second determining module 305, configured to determine whether a power difference between the second power and the first power is smaller than a first preset threshold when the determination result of the first determining module 304 is yes;
a weight determining module 306, configured to determine that the drum washing machine is in a half-load state when the determination result of the second determining module 305 is yes; the half-load state is used for representing that the weight of clothes in the drum washing machine is half of the rated capacity of the drum washing machine;
a weight determining module 306, further configured to determine that the drum washing machine is in a full load state when the determination result of the second determining module 305 is negative; wherein, the full load state is used for representing that the weight of clothes in the drum washing machine is the rated capacity of the drum washing machine.
Optionally, on the basis of the laundry weighing device of the drum washing machine shown in fig. 3, the first determining module 304 is further configured to:
if the judgment result is negative, determining that the drum washing machine is in a low-load state; wherein, the low-load state is used for representing that the weight of clothes in the drum washing machine is less than half of the rated capacity of the drum washing machine;
performing difference operation on the second power and the first power to obtain a power difference value;
determining the weight of the clothes corresponding to the power difference value from a preset clothes weight comparison table according to the power difference value; wherein, the preset clothes weight comparison table stores the corresponding relation between the power difference and the clothes weight.
Optionally, on the basis of the laundry weighing device of the drum washing machine shown in fig. 3, the first operation data includes current, voltage and accumulated rotation angle monitored at different times;
the first operation module 302 is further configured to perform the following operations:
determining a first number of rotations of the drum washing machine according to the accumulated rotation angle;
determining a first power based on the current, the voltage, and the first number of revolutions included in the first operating data;
wherein the first power is determined by the following formula;
wherein, P1For characterizing the first power; gamma ray1The method is used for representing the m-th monitored accumulated rotation angle at a first preset rotation speed;
for a first number of revolutions; m is used for representing the times of monitoring the first operation data at different time; u shape1iThe voltage detection circuit is used for representing the voltage monitored at the ith time at a first preset rotating speed; i is1iFor characterizing the current monitored i-th time at a first preset rotation speed, and a for characterizing a preset number of rotations.
Optionally, on the basis of the laundry weighing device of the drum washing machine shown in fig. 3, the second operation data includes current, voltage and accumulated rotation angle monitored at different times;
the second operation module 303 is further configured to perform the following operations:
determining a second number of rotations of the drum washing machine according to the accumulated rotation angle;
determining a second power based on the current, the voltage, and the second number of revolutions included in the second operating data;
wherein the second power is determined by the following formula;
wherein, P2For characterizing the second power; gamma ray2For characterizing the kth time of monitoring from the first preset rotation speed to the second preset rotation speedThe measured accumulated rotation angle;
for characterizing a second number of rotations; k is used for representing the number of times of monitoring the second operation data at different time; u shape2jThe voltage detection circuit is used for representing the j-th monitored voltage in the process from the first preset rotating speed to the second preset rotating speed; i is2jIs used for representing the j monitored current in the process from the first preset rotating speed to the second preset rotating speed, and a is used for representing the preset number of rotations
Optionally, on the basis of the laundry weighing device of the drum washing machine shown in fig. 3, the device further comprises: an overload determination module that applies the following operations:
judging whether the power difference value between the second power and the first power is larger than a second preset threshold value or not; the second preset threshold is larger than the first preset threshold;
if so, determining that the drum washing machine is in an overload state, wherein the overload state is used for representing that the weight of clothes in the drum washing machine exceeds the rated capacity of the drum washing machine;
performing difference operation on the power difference and a second preset threshold to obtain an overload power difference;
determining the weight of the clothes corresponding to the overload power difference value in a preset overload weight comparison table as the weight loss according to the overload power difference value;
generating prompt information according to the weight loss weight, and sending the prompt information to a user; the prompt message is used for reminding a user to correspondingly take out the clothes with reduced weight from the drum washing machine.
It is understood that the illustrated structure of the embodiment of the present invention does not constitute a specific limitation to the laundry weighing apparatus of the drum washing machine. In other embodiments of the present invention, the drum washing machine laundry weighing apparatus may include more or fewer components than illustrated, or some components may be combined, some components may be separated, or a different arrangement of components. The illustrated components may be implemented in hardware, firmware, or a combination of firmware and hardware.
Because the content of information interaction, execution process, and the like among the modules in the device is based on the same concept as the method embodiment of the present invention, specific content can be referred to the description in the method embodiment of the present invention, and is not described herein again.
As shown in fig. 4, the following describes in further detail a method for weighing laundry in a drum washing machine according to an embodiment of the present invention, and the method may include the following steps:
step 401: a first power of the drum washing machine at a first preset rotating speed is obtained.
Specifically, first operation data of the drum washing machine at a first preset rotating speed is obtained; the first operation data comprise current, voltage and accumulated rotation angle which are monitored at different time;
obtaining a first power of the drum washing machine according to the first operation data, comprising:
determining a first number of rotations of the drum washing machine according to the accumulated rotation angle;
determining a first power based on the current, the voltage, and the first number of revolutions included in the first operating data;
wherein the first power is determined by the following formula;
wherein, P1For characterizing the first power; gamma ray1The method is used for representing the m-th monitored accumulated rotation angle at a first preset rotation speed;
for a first number of revolutions; m is used for representing the times of monitoring the first operation data at different time; u shape1iThe voltage detection circuit is used for representing the voltage monitored at the ith time at a first preset rotating speed; i is1iFor characterizing the current monitored i-th time at a first preset rotation speed, and a for characterizing a preset number of rotations.
Step 402: and acquiring second power of the drum washing machine from the first preset rotating speed to the second preset rotating speed.
Specifically, second operation data of the drum washing machine from a first preset rotating speed to a second preset rotating speed are obtained; the second preset rotating speed is greater than the first preset rotating speed; the second operation data comprises current, voltage and accumulated rotation angle which are monitored at different time;
obtaining a second power of the drum washing machine according to the second operation data, comprising:
determining a second number of rotations of the drum washing machine according to the accumulated rotation angle;
determining a second power based on the current, the voltage, and the second number of revolutions included in the second operating data;
wherein the second power is determined by the following formula;
wherein, P2For characterizing the second power; gamma ray2The method is used for representing the k-th monitored accumulated rotation angle in the process from the first preset rotation speed to the second preset rotation speed;
for characterizing a second number of rotations; k is used for representing the number of times of monitoring the second operation data at different time; u shape2jThe voltage detection circuit is used for representing the j-th monitored voltage in the process from the first preset rotating speed to the second preset rotating speed; i is2jThe method is used for representing the j-th monitored current in the process from the first preset rotating speed to the second preset rotating speed, and a is used for representing the preset number of rotations.
Step 403: judging whether the first power is greater than a first power threshold value and whether the second power is greater than a second power threshold value, if so, executing a step 404; if the determination results are yes, go to step 405.
Step 404: and determining that the drum washing machine is in a low-load state.
In particular, the amount of the solvent to be used,
determining that the drum washing machine is in a low-load state; wherein, the low-load state is used for representing that the weight of clothes in the drum washing machine is less than half of the rated capacity of the drum washing machine;
performing difference operation on the second power and the first power to obtain a power difference value;
determining the weight of the clothes corresponding to the power difference value from a preset clothes weight comparison table according to the power difference value; wherein, the preset clothes weight comparison table stores the corresponding relation between the power difference and the clothes weight.
Step 405: and judging whether the power difference value between the second power and the first power is smaller than a first preset threshold value, if so, executing step 406, otherwise, executing step 407.
Step 406: and determining that the drum washing machine is in a half-load state.
Specifically, the drum washing machine is determined to be in a half-load state; wherein, the half-load state is used for representing that the weight of clothes in the drum washing machine is half of the rated capacity of the drum washing machine.
Step 407: and judging whether the power difference value between the second power and the first power is larger than a second preset threshold value, if so, executing step 408, otherwise, executing step 409.
Specifically, the second preset threshold is greater than the first preset threshold.
Step 408: and determining that the drum washing machine is in an overload state.
Specifically, the method comprises the steps of determining that the drum washing machine is in an overload state, wherein the overload state is used for representing that the weight of clothes in the drum washing machine exceeds the rated capacity of the drum washing machine;
performing difference operation on the power difference and a second preset threshold to obtain an overload power difference;
determining the weight of the clothes corresponding to the overload power difference value in a preset overload weight comparison table as the weight loss according to the overload power difference value;
generating prompt information according to the weight loss weight, and sending the prompt information to a user; the prompt message is used for reminding a user to correspondingly take out the clothes with reduced weight from the drum washing machine.
Step 409: the drum washing machine is determined to be in a full load state.
Specifically, the drum washing machine is determined to be in a full load state; wherein, the full load state is used for representing that the weight of clothes in the drum washing machine is the rated capacity of the drum washing machine.
The present invention also provides a computer readable medium storing instructions for causing a machine to perform a method of weighing laundry in a drum washing machine as described herein. Specifically, a system or an apparatus equipped with a storage medium on which firmware program codes that realize the functions of any of the above-described embodiments are stored may be provided, and a computer (or a CPU or MPU) of the system or the apparatus is caused to read out and execute the program codes stored in the storage medium.
In this case, the program code itself read from the storage medium can realize the functions of any of the above-described embodiments, and thus the program code and the storage medium storing the program code constitute a part of the present invention.
Examples of the storage medium for supplying the program code include a floppy disk, a hard disk, a magneto-optical disk, an optical disk (e.g., CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-RAM, DVD-RW, DVD + RW), a magnetic tape, a nonvolatile memory card, and a ROM. Alternatively, the program code may be downloaded from a server computer via a communications network.
Further, it should be clear that the functions of any one of the above-described embodiments may be implemented not only by executing the program code read out by the computer, but also by causing an operating system or the like operating on the computer to perform a part or all of the actual operations based on instructions of the program code.
Further, it is to be understood that the program code read out from the storage medium is written to a memory provided in an expansion board inserted into the computer or to a memory provided in an expansion module connected to the computer, and then causes a CPU or the like mounted on the expansion board or the expansion module to perform part or all of the actual operations based on instructions of the program code, thereby realizing the functions of any of the above-described embodiments.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a" does not exclude the presence of other similar elements in a process, method, article, or apparatus that comprises the element.
Those of ordinary skill in the art will understand that: all or part of the steps for realizing the method embodiments can be completed by hardware related to program instructions, the program can be stored in a computer readable storage medium, and the program executes the steps comprising the method embodiments when executed; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Finally, it is to be noted that: the above description is only a preferred embodiment of the present invention, and is only used to illustrate the technical solutions of the present invention, and not to limit the protection scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (10)
1. The drum washing machine clothes weighing method comprises the following steps:
acquiring first operation data of the drum washing machine at a first preset rotating speed;
obtaining a first power of the drum washing machine according to the first operation data;
acquiring second operation data of the drum washing machine from the first preset rotating speed to a second preset rotating speed; the second preset rotating speed is greater than the first preset rotating speed;
obtaining a second power of the drum washing machine according to the second operation data;
judging whether the first power is greater than a first power threshold value or not and whether the second power is greater than a second power threshold value or not;
if the judgment results are yes, judging whether the power difference value between the second power and the first power is smaller than a first preset threshold value;
if the power difference value between the second power and the first power is smaller than the first preset threshold, determining that the drum washing machine is in a half-load state; wherein the half-load state is used for representing that the weight of clothes in the drum washing machine is half of the rated capacity of the drum washing machine;
if the power difference value between the second power and the first power is not less than the first preset threshold value, determining that the drum washing machine is in a full-load state; wherein the full load condition is used for representing that the weight of clothes in the drum washing machine is the rated capacity of the drum washing machine.
2. The method of claim 1, wherein said determining whether said first power is greater than a first power threshold and said second power is greater than a second power threshold comprises;
if the judgment result is negative, determining that the drum washing machine is in a low-load state; wherein the low load state is used for representing that the weight of clothes in the drum washing machine is less than half of the rated capacity of the drum washing machine;
performing difference operation on the second power and the first power to obtain a power difference value;
determining the clothes weight corresponding to the power difference value from a preset clothes weight comparison table according to the power difference value; wherein, the preset clothes weight comparison table stores the corresponding relation between the power difference and the clothes weight.
3. The method of claim 1, wherein the first operational data includes current, voltage, cumulative angle of rotation monitored at different times;
the obtaining of the first power of the drum washing machine according to the first operation data includes:
determining a first number of rotations of the drum washing machine according to the accumulated rotation angle;
determining the first power based on the current, the voltage, and the first number of revolutions included in the first operating data;
wherein the first power is determined by the following formula;
wherein, P1For characterizing the first power; gamma ray1The method is used for representing the m-th monitored accumulated rotation angle at the first preset rotation speed;
for the first number of revolutions; m is used for representing the number of times of monitoring the first operation data at different time; u shape1iThe voltage detection circuit is used for representing the voltage monitored at the ith time at the first preset rotating speed; i is1iFor characterizing the current monitored i-th time at said first preset rotation speed, a for characterizing a preset number of rotations.
4. The method of claim 1, wherein the second operational data includes current, voltage, cumulative angle of rotation monitored at different times;
the obtaining of the second power of the drum washing machine according to the second operation data includes:
determining a second number of rotations of the drum washing machine according to the accumulated rotation angle;
determining the second power according to the current, the voltage and the second number of revolutions included in the second operating data;
wherein the second power is determined by the following formula;
wherein, P2For characterizing the second power; gamma ray2The system is used for representing the k-th monitored accumulated rotation angle in the process from the first preset rotation speed to the second preset rotation speed;
for characterizing the second number of rotations; k is used for representing the number of times of monitoring the second operation data at different times; u shape2jThe voltage monitoring device is used for representing the monitored voltage at the jth time in the process from the first preset rotating speed to the second preset rotating speed; i is2jAnd a is used for representing the current monitored at the jth time in the process from the first preset rotating speed to the second preset rotating speed, and a is used for representing the preset number of rotations.
5. The method according to any one of claims 1 to 4, wherein after the determining that the drum washing machine is in a full load state, further comprising:
judging whether the power difference value between the second power and the first power is larger than a second preset threshold value or not; wherein the second preset threshold is greater than the first preset threshold;
if yes, determining that the drum washing machine is in an overload state, wherein the overload state is used for representing that the weight of clothes in the drum washing machine exceeds the rated capacity of the drum washing machine;
performing difference operation on the power difference and the second preset threshold to obtain an overload power difference;
determining the weight of the clothes corresponding to the overload power difference value in a preset overload weight comparison table as the weight loss according to the overload power difference value;
generating prompt information according to the weight loss weight, and sending the prompt information to a user; the prompt message is used for reminding a user to correspondingly take out the clothes with the reduced weight from the drum washing machine.
6. A drum washing machine clothes weighing device is characterized by comprising:
the acquisition module is used for acquiring first operation data of the drum washing machine at a first preset rotating speed;
the first operation module is used for obtaining first power of the drum washing machine according to the first operation data obtained by the obtaining module;
the acquisition module is further used for acquiring second operation data of the drum washing machine from the first preset rotating speed to a second preset rotating speed; the second preset rotating speed is greater than the first preset rotating speed;
the second operation module is used for obtaining second power of the drum washing machine according to the second operation data obtained by the obtaining module;
the first judgment module is used for judging whether the first power obtained by the first operation module is greater than a first power threshold value or not and whether the second power obtained by the second operation module is greater than a second power threshold value or not;
the second judging module is used for judging whether the power difference value between the second power and the first power is smaller than a first preset threshold value or not when the judging result of the first judging module is yes;
the weight determining module is used for determining that the drum washing machine is in a half-load state when the judgment result of the second judging module is yes; wherein the half-load state is used for representing that the weight of clothes in the drum washing machine is half of the rated capacity of the drum washing machine;
the weight determining module is further used for determining that the drum washing machine is in a full-load state when the judgment result of the second judging module is negative; wherein the full load condition is used for representing that the weight of clothes in the drum washing machine is the rated capacity of the drum washing machine.
7. The apparatus of claim 6, wherein the first determining module is further configured to:
if the judgment result is negative, determining that the drum washing machine is in a low-load state; wherein the low load state is used for representing that the weight of clothes in the drum washing machine is less than half of the rated capacity of the drum washing machine;
performing difference operation on the second power and the first power to obtain a power difference value;
determining the clothes weight corresponding to the power difference value from a preset clothes weight comparison table according to the power difference value; wherein, the preset clothes weight comparison table stores the corresponding relation between the power difference and the clothes weight.
8. The apparatus of claim 6, wherein the first operational data comprises current, voltage, cumulative angle of rotation monitored at different times;
the first operation module is further configured to perform the following operations:
determining a first number of rotations of the drum washing machine according to the accumulated rotation angle;
determining the first power based on the current, the voltage, and the first number of revolutions included in the first operating data;
wherein the first power is determined by the following formula;
wherein, P1For characterizing the first power; gamma ray1The method is used for representing the m-th monitored accumulated rotation angle at the first preset rotation speed;
for the first number of revolutions; m is used for representing the number of times of monitoring the first operation data at different time; u shape1iThe voltage detection circuit is used for representing the voltage monitored at the ith time at the first preset rotating speed; i is1iFor characterizing the current monitored i-th time at said first preset rotation speed, a for characterizing a preset number of rotations.
9. A drum washing machine clothes weighing device is characterized by comprising: at least one memory and at least one processor;
the at least one memory to store a machine readable program;
the at least one processor, for invoking the machine readable program, to perform the method of drum washing machine laundry weighing of any of claims 1 to 5.
10. Computer readable medium, characterized in that it has stored thereon computer instructions which, when executed by a processor, cause said processor to carry out the method for weighing laundry in a drum washing machine according to any one of claims 1 to 5.
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| CN113957659A (en) * | 2021-12-07 | 2022-01-21 | 四川虹美智能科技有限公司 | Weighing method and device of drum washing machine and drum washing machine |
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