Weighing test method and device for dry cloth of washing machine

Abstract

The invention provides a washing machine dry cloth weighing test method and a test device, a distribution program is executed after a shaking program is executed and before a dry cloth weighing test, the distribution program enables dry cloth loads to be distributed on the inner wall of a roller under the action of centrifugal force, so that the dry cloth loads are prevented from being stacked together, then the dry cloth weighing test is executed, and during the test, the dry cloth loads are distributed on the inner wall of the roller under the action of centrifugal force. The dry cloth load is attached to the inner wall of the roller in a distributed state, so that centrifugal force with changing directions cannot be generated during weighing due to load accumulation, the roller cannot shake, a motor current signal based on weighing is a stable signal, a tested weighing value is accurate, and the weighing accuracy is improved. The problem that the fluctuation range of the weighing result is large due to uneven load distribution of the dry cloth is fundamentally solved. The weighing process is stable and accurate, and a plurality of weighing tests exceed a fluctuation range, so that reasons can be clearly checked from inherent defects, the checking range is greatly reduced, and the test efficiency can be remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of laundry care equipment, and in particular, relates to a method and device for testing the weight of dry cloth in a washing machine. BACKGROUND

[0002] In the production debugging and function verification process of the current variable frequency drum washing machine, the dry cloth load with a set weight (determined according to the washing machine model and rated load capacity) is used for weighing in the dry cloth weight test project, and the value obtained by weighing in each kilogram segment must be within the error range, and the error range is ±2%.

[0003] The accuracy of the test is directly related to the normal execution of the subsequent washing program, because the water inflow, washing strength and washing time, and detergent dosage selected in the subsequent washing program are all determined according to the weighing result. If the weighing result is inaccurate, it will have many negative effects on the subsequent washing, such as wasting resources and energy due to too high washing water level, reducing washing effect due to too low washing water level, and wearing clothes due to too high washing strength, etc.

[0004] At present, the conventional dry cloth weight test method adopted by most machine manufacturers in the industry is as follows: after the dry cloth load is put in, a shaking program is first executed to loosen and spread the dry cloth load, and then the weighing sampling test is performed. However, the existing test method has the following problems: the distribution state of the dry cloth load in the drum after shaking has randomness and uncontrollability, and it is possible that the dry cloth load will accumulate in a certain position after the shaking program without spreading out. In this uneven distribution state, the centrifugal force of the accumulated dry cloth load changes direction and causes the drum to shake, resulting in that the motor current signal on which the weighing is based is not a stable value, so that the weighing value fluctuates greatly, which means that the test cannot pass, and the reason for the test failure needs to be found. However, in the existing dry cloth weight test method, the test personnel do not know that the test failure is caused by the accumulation of dry cloth load, but need to exclude through experience, modify different test conditions and repeat a large number of trial and error to find out the reason, which obviously greatly increases the test difficulty and reduces the test efficiency. SUMMARY

[0005] The present application is directed to the above-mentioned problems existing in the dry cloth weighing test of the washing machine, and proposes a dry cloth weighing test method and test device for the washing machine, wherein after the load is shaken and scattered, before the dry cloth weighing test, the high-speed rotation of the drum is controlled to make the dry cloth load evenly adhere to the inner wall of the drum, and then the weighing and logical judgment are performed multiple times to determine the final load weight, thereby solving the problem of large fluctuation of the weighing result caused by the accumulation of the dry cloth load in the dry cloth weighing test, making the fluctuation of the weighing result stable within the error range of ±2%, and thereby ensuring the accuracy of the dry cloth weighing test; and if the test exceeds the fluctuation range under the premise of stable weighing, the cause can be checked from the hardware or software perspective, and the test efficiency can be significantly improved.

[0006] The present application is implemented by adopting the following technical solutions: A dry cloth weighing test method for the washing machine is proposed, comprising: S1, performing a shaking program to shake and scatter the dry cloth load; S2, performing a distribution program to make the dry cloth load distributed on the inner wall of the drum under the action of centrifugal force; S3, starting the dry cloth weighing test.

[0007] Compared with the prior art, the advantages and positive effects of the present application are that: in the dry cloth weighing test method for the washing machine proposed by the present application, a distribution program is performed before the shaking program is completed and before the dry cloth weighing test, which makes the dry cloth load distributed on the inner wall of the drum under the action of centrifugal force, thereby avoiding the accumulation of the dry cloth load, and then performing the dry cloth weighing test, in the test, since the dry cloth load is attached to the inner wall of the drum in a distributed state, the centrifugal force changing in direction will not be generated during the weighing, and the drum will not shake, the motor current signal on which the weighing is based is a stable signal, and the weighing value of the test is accurate, thereby fundamentally solving the problem of large fluctuation range of the weighing result caused by the uneven distribution of the dry cloth load. Since the weighing process is stable and accurate, it can ensure that the load is in an approximately ideal and predictable uniform distribution state during each dry cloth weighing test, and the randomness of the result is reduced, at this time, if the dry cloth weighing test exceeds the fluctuation range, the cause can be checked from the inherent defects of the hardware design or core software, the checking range is greatly reduced, and based on the stable and repeatable test environment, the subsequent directional checking process changes from the existing blind trial and error to verification and fine-tuning, making the checking process faster, and thereby the test efficiency can be significantly improved.

[0008] In some embodiments of the present application, the distribution program in S2 comprises: controlling the rotation of the drum at a first set speed for a first set time, wherein the first set speed at least makes the dry cloth load distributed on the inner wall of the drum under the action of centrifugal force.

[0009] The distribution procedure of the embodiment controls the roller to run at a first set rotating speed for a first set time length after the shaking operation and before the dry cloth weighing test, under the first set rotating speed, the dry cloth load is evenly thrown on the inner wall of the roller by the centrifugal force, and then is evenly distributed on the inner wall of the roller under the rotation of the first set time length.

[0010] In some embodiments of the application, the distribution procedure in S2 further comprises: After the roller is controlled to rotate at the first set rotating speed for the first set time length, the roller is controlled to rotate at a second set rotating speed for a second set time length; wherein the second set rotating speed is lower than the first set rotating speed; and the second set time length is shorter than the first set time length.

[0011] The distribution procedure of the embodiment controls the roller to run at a first set rotating speed for a first set time length after the shaking operation and before the dry cloth weighing test, under the first set rotating speed, the dry cloth load is evenly thrown on the inner wall of the roller by the centrifugal force, and then is evenly distributed on the inner wall of the roller under the rotation of the first set time length; and then the roller is run at a second set rotating speed lower than the first set rotating speed for a second set time length, so as to stabilize the distribution state of the dry cloth load and quickly dock to the rotating speed of the dry cloth weighing, thereby saving the test time of the dry cloth weighing test.

[0012] In some embodiments of the application, S3 specifically comprises: At least three dry cloth weighing samples are performed to obtain at least three weighing test values; When all the at least three weighing test values fall within the preset weighing value domain, the load amount corresponding to the preset weighing value domain is determined as the weighing test result.

[0013] The embodiment establishes a repeated and reinforced test mechanism by means of multiple weighing sampling and judging whether the multiple weighing test values fall within the preset weighing value domain, when the weighing results of the multiple repeated tests all fall within the preset weighing value domain, the test result is stable and reliable, the tedious repeated test of the test personnel is saved, and the test difficulty is reduced.

[0014] In some embodiments of the application, S3 further comprises: When there is a weighing test value not falling within the preset weighing value domain, at least two dry cloth weighing samples are performed again; The number of the weighing test values falling within the preset weighing value domain is judged; When the number of the weighing test values falling within the preset weighing value domain is higher than a preset number, the load amount corresponding to the preset weighing value domain is determined as the weighing test result; otherwise, the test fails.

[0015] The embodiment establishes a fault-tolerant and anti-interference mechanism by judging whether the number of the preset weighing value range in the multiple weighing test values meets the number of the weighing test values, so that reliable conclusion can be drawn by the system without the need of the tester to trace the fluctuation cause even if single weighing fluctuation occurs, and the test difficulty is greatly reduced A laundry dryer lint weighing detection device is provided, comprising: A distribution control unit is configured to execute a distribution program to distribute the dryer lint load on the inner wall of the drum under the action of centrifugal force. A distribution control unit is configured to execute a distribution program to distribute the dryer lint load on the inner wall of the drum under the action of centrifugal force. A dryer lint weighing test unit is configured to start the dryer lint weighing test after the distribution program is executed.

[0016] Compared with the prior art, the advantages and positive effects of the laundry dryer lint weighing test device are that: before the distribution program is executed and the dryer lint weighing test is performed, a distribution program is executed to distribute the dryer lint load on the inner wall of the drum under the action of centrifugal force, thereby avoiding the dryer lint load from piling up, and then performing the dryer lint weighing test. In the test, the dryer lint load is attached to the inner wall of the drum in a distributed state, so that the centrifugal force in the direction changes during the weighing period due to the piling up of the load, and the drum does not shake, the motor current signal on which the weighing is based is a stable signal, and the weighing value of the test is accurate, thereby fundamentally solving the problem of large fluctuation range of the weighing result caused by uneven distribution of the dryer lint load. Since the weighing process is stable and accurate, it can ensure that the load is in an approximately ideal and predictable uniform distribution state during each dryer lint weighing test, and the randomness of the result is reduced. At this time, if the dryer lint weighing test exceeds the fluctuation range, the cause can be traced from inherent defects such as hardware design or core software, thereby greatly reducing the troubleshooting range, and based on the stable and repeatable test environment, the subsequent directional troubleshooting process changes from the existing blind trial and error to verification and fine-tuning, making the troubleshooting process faster, and therefore the test efficiency can be significantly improved.

[0017] In some embodiments of the present application, the distribution control unit controls the drum to rotate at a first set speed for a first set duration, and the first set speed at least causes the dryer lint load to be distributed on the inner wall of the drum under the action of centrifugal force.

[0018] In some embodiments of the present application, the distribution control unit controls the drum to rotate at a first set speed for a first set duration, and the first set speed at least causes the dryer lint load to be distributed on the inner wall of the drum under the action of centrifugal force.

[0019] In some embodiments of the present application, the dry cloth weighing test unit performs dry cloth weighing sampling at least three times to obtain at least three weighing test values; when all the at least three weighing test values fall within the preset weighing value range, the load amount corresponding to the preset weighing value range is determined as the weighing test result.

[0020] In some embodiments of the present application, when there is a weighing test value not falling within the preset weighing value range, the dry cloth weighing test unit performs dry cloth weighing sampling at least two more times; the number of weighing test values falling within the preset weighing value range is determined; when the number of weighing test values falling within the preset weighing value range is higher than a preset number, the load amount corresponding to the preset weighing value range is determined as the weighing test result; otherwise, the test fails.

[0021] Other features and advantages of the present application will become more apparent from the following detailed description of the embodiments of the present application when read in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0023] Figure 1 The execution steps of the dry cloth weighing test method of the washing machine according to Embodiment One of the present application are shown in the following table. Figure 2 The execution steps of the dry cloth weighing test method of the washing machine according to Embodiment One of the present application are shown in the following table. Figure 3 The execution steps of the dry cloth weighing test method of the washing machine according to Embodiment Two of the present application are shown in the following table. Figure 4 The execution steps of the dry cloth weighing test method of the washing machine according to Embodiment Three of the present application are shown in the following table. Figure 5 The device structure of the dry cloth weighing test device of the washing machine according to the present application is shown in the following table. DETAILED DESCRIPTION

[0024] The technical solutions of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0025] In the description of the present application, it needs to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0026] In the description of the present application, it needs to be understood that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0027] The terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "multiple" is two or more.

[0028] When weighing test is carried out with dry cloth load, the range interval [M0, Mn] to be weighed is determined according to the specific model of the washing machine and the rated load capacity, and a plurality of weighing test intervals are determined with a set weight interval in the range interval, for example, 1KG interval, dividing several weighing test intervals [M0, M0+1], [M0+1, M0+2], … [M0-1, M0].

[0029] During the weighing test, it is required that the value obtained by weighing each kilogram segment is within the error range, and the error range is ±2%. In each kilogram segment, the minimum weighing precision is progressive, and each weighing test point corresponds to a dry cloth load. For example, in the [1KG, 2KG] kilogram segment, the weighing precision is 0.2 kilograms, and five dry cloth loads of 1KG, 1.2KG, 1.4KG, 1.6KG, 1.8KG and 2KG are provided in the kilogram segment for weighing test.

[0030] The washing machine dry cloth weighing test method provided by the present application is applied to each weighing test point, as shown in Figure 1 , comprising: S1: putting the dry cloth load of the target weighing test point into the washing machine drum.

[0031] After placing the dry cloth load to be tested in the drum of the washing machine, the test procedure is started.

[0032] S2: a shaking procedure is executed to shake the dry cloth load.

[0033] The shaking procedure is executed first after the test procedure is started, and the dry cloth load is spread out through the operation of the shaking procedure to avoid the dry cloth load from piling up together.

[0034] S3: a distribution procedure is executed to distribute the dry cloth load on the inner wall of the drum.

[0035] To avoid the dry cloth load from piling up together after the shaking procedure is executed and affecting the accuracy of the weighing, the distribution procedure is executed before the dry cloth weighing test is executed after the shaking procedure, and under the distribution procedure, the dry cloth load is distributed on the entire inner wall of the drum under the action of the centrifugal force, so that the centrifugal force in the direction is not generated during the weighing due to the piling up of the load, and the drum is not shaken, and the motor current signal on which the weighing is based is a stable signal.

[0036] S3: a dry cloth weighing test is executed.

[0037] The dry cloth weighing test procedure is started, the drum is driven to rotate at a set speed, the current required for the motor to drag the drum at the set speed is measured, and the weight of the dry cloth load is indirectly calculated through the current signal.

[0038] Specifically, the current value of the empty drum rotation at the set speed (reference current) is pre-stored in the memory of the washing machine, and then the current value measured at present is compared with the empty drum reference current, and the difference between the two reflects the weight of the dry cloth load in the drum, and through a pre-set model, the washing machine controller converts the current difference into a specific weight value.

[0039] S4: whether the current weighing result falls within a pre-set weighing value range is judged.

[0040] Taking the current weighing test point of 2KG as an example, in the case of an error of ±2%, the pre-set weighing value range corresponding to the current dry cloth load is [1.96KG, 2.04KG].

[0041] If the current weighing result falls within the pre-set weighing value range, the current weighing test point passes the test, the next weighing test point is updated as the target weighing test point according to the test interval, and step S1 is returned. If the current weighing result does not fall within the pre-set weighing value range, a test unqualified prompt information is issued.

[0042] The present application avoids the dry cloth load from piling up by executing a distribution program before the dry cloth weighing test after the shaking program is executed, the distribution program makes the dry cloth load distribute on the inner wall of the drum under the action of centrifugal force, and then the dry cloth weighing test is executed, in the test, the dry cloth load adheres to the inner wall of the drum in a distributed state, so that the centrifugal force in the direction changes during the weighing due to the piling of the load, and the drum does not shake, the motor current signal for the weighing is a stable signal, and the weighing value of the test is accurate, thereby fundamentally solving the problem of large fluctuation range of the weighing result caused by uneven distribution of the dry cloth load.

[0043] Since the weighing process is stable and accurate, it can ensure that the load is in an approximately ideal and predictable uniform distribution state during each dry cloth weighing test, and the randomness of the result is reduced, at this time, if the dry cloth weighing test exceeds the fluctuation range, the cause can be definitely investigated from inherent defects such as hardware design or core software, the investigation range is greatly reduced, and based on the stable and repeatable test environment, the subsequent directional investigation process changes from the existing blind trial and error to verification and fine tuning, which makes the investigation process faster, and therefore the test efficiency can be significantly improved.

[0044] The dry cloth weighing test method of the washing machine proposed by the present application will be described in detail below with specific embodiments. Embodiment

[0045] This embodiment takes the current test weighing test points 2.2KG, 2.4KG, 2.6KG, 2.8KG and 3KG in the [2KG, 3KG] kilogram section as an example, as shown in Figure 2 , which includes: S21: Put the dry cloth load of the target weighing test point into the washing machine drum.

[0046] For example, the target weighing test point to be tested is 2.4KG, then place the 2.4KG dry cloth load in the washing machine drum, and start the test program.

[0047] S22: Execute the shaking program to shake the dry cloth load.

[0048] The test program is started first to execute the shaking program, which spreads the dry cloth load through the operation of the shaking program, so as to avoid the dry cloth load from piling up.

[0049] S23: Control the drum to rotate at a first set speed for a first set time.

[0050] To avoid the dry cloth load from piling up after the shaking program runs and affecting the accuracy of the weighing, the embodiment executes a distribution program before the dry cloth weighing test after the shaking program. Under the distribution program, the drum is driven to rotate at a speed of 200 rpm for 30 seconds, during which the dry cloth load is distributed on the inner wall of the entire drum under the action of centrifugal force, so that the centrifugal force in different directions during the weighing caused by the load piling up does not cause the drum to shake, and the motor current signal on which the weighing is based is a stable signal.

[0051] S24: control the drum to rotate at a second set speed for a second set time length.

[0052] Then run at a speed of 90 rpm, which is lower than the first set speed, for 10 seconds, to stabilize the distribution state of the dry cloth load and quickly connect to the dry cloth weighing speed, saving the test time of the dry cloth weighing test.

[0053] S25: execute the dry cloth weighing test.

[0054] Directly cut into the dry cloth weighing test program from the speed of 90 rpm of the drum, drive the drum into the set speed under the weighing test, measure the current required by the motor to drag the drum at the set speed, and indirectly calculate the weight of the dry cloth load through the current signal.

[0055] Specifically, the current value of the empty drum rotation at the set speed (reference current) is pre-stored in the memory of the washing machine, and then the currently measured current value is compared with the empty drum reference current. The difference between the two reflects the weight of the dry cloth load in the drum, and through a pre-set model, the washing machine controller converts the current difference into a specific weight value.

[0056] S26: determine whether the current weighing result falls within the pre-set weighing value range.

[0057] Taking the current weighing test point of 2.4 kg as an example, the error is ±2%, and the pre-set weighing value range corresponding to the current dry cloth load is [2.352 kg, 2.448 kg].

[0058] If the current weighing result falls within the pre-set weighing value range, the current weighing test point passes the test, the target weighing test point is updated to 2.6 kg, and step S21 is returned.

[0059] If the current weighing result does not fall within the pre-set weighing value range, step S27 is executed.

[0060] S27: issue a prompt information of unqualified test. Embodiment

[0061] The present embodiment takes the current testing of the weighing test points 2.2KG, 2.4KG, 2.6KG, 2.8KG and 3KG in the [2KG, 3KG] kilogram section as an example, as shown in Figure 3 S31: Put the dry cloth load of the target weighing test point into the washing machine drum.

[0062] For example, the current target weighing test point to be tested is 3KG, then place the 3KG dry cloth load in the washing machine drum, and start the test program.

[0063] S32: Execute the shaking program to shake the dry cloth load.

[0064] The shaking program is executed first after the test program is started, and the dry cloth load is spread out through the operation of the shaking program to avoid the dry cloth load from piling up together.

[0065] S33: Control the drum to rotate at a first set speed for a first set duration.

[0066] To avoid the dry cloth load from piling up together after the shaking program is run and affecting the accuracy of the weighing, the present embodiment executes a distribution program before the dry cloth weighing test, under which the drum is driven to rotate at a speed of 200 revolutions per second for 30 seconds, during which the dry cloth load is distributed on the entire inner wall of the drum under the action of centrifugal force, so that the centrifugal force does not change direction during the weighing due to the load piling up, and the drum does not shake, and the motor current signal on which the weighing is based is a stable signal.

[0067] S34: Control the drum to rotate at a second set speed for a second set duration.

[0068] Then run at a speed of 90 revolutions per second, which is lower than the first set speed, for 10 seconds, to stabilize the distribution state of the dry cloth load and quickly connect to the dry cloth weighing speed, saving the test time of the dry cloth weighing test.

[0069] S35: Loop and execute the dry cloth weighing test three times.

[0070] Directly cut into the dry cloth weighing test program from the speed of 90 revolutions per second of the drum, drive the drum to enter the set speed under the weighing test, and measure the motor to loop and weigh three times to obtain A, B, C three weighing test values.

[0071] S36: Determine whether all three weighing test values fall within the preset weighing value range.

[0072] The current weighing test point is 3KG, and the error is within ±2%, so the preset weighing value range corresponding to the current dry cloth load is [2.94KG, 3.06KG].

[0073] ​If all the three times of weighing result fall in the preset weighing value range, the current weighing test point passes the test, the target weighing test point is updated to 3.2KG, and the step S31 is returned.

[0074] If there is a weighing test value not falling in the preset weighing value range, the step S37 is executed.

[0075] S37: prompt information of test failure is sent out. Embodiment

[0076] The embodiment is implemented based on the embodiment two, as shown in the figure, in S36, if it is judged that there is a weighing test value not falling in the preset weighing value range, S38 is executed: twice dry cloth weighing sampling is executed again. Figure 4

[0077] Two weighing test values D and E are obtained by recycling weighing twice.

[0078] S39: the number of weighing test values falling in the preset weighing value range is judged.

[0079] The number of five weighing test values A, B, C, D and E falling in the preset weighing value range is judged.

[0080] S40: if the number of weighing test values falling in the preset weighing value range is higher than the preset number, the load corresponding to the preset weighing value range is determined as the weighing test result.

[0081] For example, if the preset number is 4, if four values of the five weighing test values fall in the preset weighing value range, the load corresponding to the preset weighing value range is determined as the weighing test result, in the embodiment, the weighing test result is 3KG.

[0082] S41: if the number of weighing test values falling in the preset weighing value range is lower than the preset number, prompt information of test failure is sent out.

[0083] The application also proposes a dry cloth weighing test device of a washing machine, for implementing the dry cloth weighing test method of the washing machine proposed in the above embodiment, as shown in the figure, comprising: Figure 5 The shaking control unit 51 is used for executing a shaking program to shake the dry cloth load.

[0084] The distribution control unit 52 is used for executing a distribution program to make the dry cloth load distributed on the inner wall of the drum under the action of centrifugal force.

[0085] The dry cloth weighing test unit 53 is used for starting the dry cloth weighing test after executing the distribution program.

[0086] ​​In some embodiments, the distribution control unit controls the rotation of the drum at a first set speed for a first set duration; wherein the first set speed is at least sufficient to cause the dry cloth to be distributed on the inner wall of the drum under the action of centrifugal force.

[0087] In some embodiments, after controlling the rotation of the drum at the first set speed for the first set duration, the rotation of the drum is controlled at a second set speed for a second set duration; wherein the second set speed is lower than the first set speed.

[0088] In some embodiments, the test unit performs dry cloth weighing sampling at least three times to obtain at least three weighing test values; when all of the at least three weighing test values fall within a preset weighing value range, the load amount corresponding to the preset weighing value range is determined as the weighing test result.

[0089] In some embodiments, when there is a weighing test value that does not fall within the preset weighing value range, the test unit performs dry cloth weighing sampling at least twice again; the number of weighing test values that fall within the preset weighing value range is determined from the at least five weighing test values; when the number of weighing test values that fall within the preset weighing value range is higher than a preset number, the load amount corresponding to the preset weighing value range is determined as the weighing test result; otherwise, the test fails.

[0090] The method for performing dry cloth weighing test by the test device will be described in detail below, and will not be repeated here.

[0091] It should be noted that the above description is not a limitation of the present application, and the present application is not limited to the above examples. Changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present application, such as splitting and combining the above embodiments to achieve several safety control schemes, should also be within the scope of the present application.

Claims

1. A method for testing the weight of a dry cloth in a washing machine, characterized in that, include: S1, execute the shaking procedure to shake off the dry cloth load; S2, execute the distribution program to distribute the dry cloth load onto the inner wall of the drum under the action of centrifugal force; S3, start the dry cloth weighing test.

2. The washing machine dry cloth weighing test method according to claim 1, characterized in that, The distribution procedure described in S2 includes: controlling the rotation of the drum to a first set speed for a first set time; wherein the first set speed at least causes the dry cloth load to be distributed on the inner wall of the drum under the action of centrifugal force.

3. The method for testing the weight of a dry cloth in a washing machine according to claim 2, characterized in that, The distribution procedure described in S2 also includes: After the drum is controlled to rotate for a first set time at a first set speed, it is then controlled to rotate for a second set time at a second set speed; wherein the second set speed is lower than the first set speed and the second set time is shorter than the first set time.

4. The method for testing the weight of a dry cloth in a washing machine according to claim 1, characterized in that, S3 specifically includes: Perform at least three dry cloth weighing samples to obtain at least three weighing test values; When at least three weighing test values ​​all fall within the preset weighing value range, the load corresponding to the preset weighing value range is determined as the weighing test result.

5. The washing machine dry cloth weighing test method according to claim 4, characterized in that, S3 also includes: If there is a weighing test value that does not fall within the preset weighing value range, perform at least two more dry cloth weighing samples. Determine the number of weighing test values ​​that fall within the preset weighing range at least five times; If the number of weighing test values ​​falling within the preset weighing range is higher than the preset number, the load corresponding to the preset weighing range is determined as the weighing test result; otherwise, the test fails.

6. A washing machine dry cloth weighing and detection device, characterized in that, include: The shaking control unit is used to execute the shaking program to shake the dry cloth load; The distribution control unit is used to execute the distribution program so that the dry cloth load is distributed on the inner wall of the drum under the action of centrifugal force; The dry cloth weighing test unit is used to start the dry cloth weighing test after the distribution program is executed.

7. The washing machine dry cloth weighing test device according to claim 6, characterized in that, The distribution control unit controls the drum to rotate for a first set time at a first set speed; wherein the first set speed at least ensures that the dry cloth load is distributed on the inner wall of the drum under the action of centrifugal force.

8. The washing machine dry cloth weighing test device according to claim 7, characterized in that, After controlling the roller to rotate for a first set time at a first set speed, the distributed control unit then controls the roller to rotate for a second set time at a second set speed; wherein the second set speed is lower than the first set speed.

9. The washing machine dry cloth weighing test device according to claim 6, characterized in that, The dry cloth weighing test unit performs at least three dry cloth weighing samples to obtain at least three weighing test values; when all at least three weighing test values ​​fall within the preset weighing value range, the load corresponding to the preset weighing value range is determined as the weighing test result.

10. The washing machine dry cloth weighing test device according to claim 9, characterized in that, When there is a weighing test value that does not fall within the preset weighing value range, the dry cloth weighing test unit performs at least two more dry cloth weighing samples; and determines the number of at least five weighing test values ​​that fall within the preset weighing value range. If the number of weighing test values ​​falling within the preset weighing range is higher than the preset number, the load corresponding to the preset weighing range is determined as the weighing test result. Otherwise, the test will fail.

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