CN101526388A - Self-weighing method for drum-type washing machine - Google Patents

Self-weighing method for drum-type washing machine Download PDF

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CN101526388A
CN101526388A CN 200810007636 CN200810007636A CN101526388A CN 101526388 A CN101526388 A CN 101526388A CN 200810007636 CN200810007636 CN 200810007636 CN 200810007636 A CN200810007636 A CN 200810007636A CN 101526388 A CN101526388 A CN 101526388A
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motor
torque
washing machine
step
rotational speed
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CN 200810007636
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CN101526388B (en )
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吕佩师
升 许
张惠玉
皮晓杰
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海尔集团公司;青岛海尔洗衣机有限公司
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The invention relates to a self-weighing method for a drum-type washing machine. Firstly, controlling a motor to reach a first preset speed and to rotate at the first preset speed constantly, and measuring the torque of the motor rotating constantly at the first preset speed; secondly, controlling the motor to accelerate from the first preset speed to a second preset speed, and measuring the accelerating torque of the motor accelerating from the first preset speed to the second preset speed; thirdly, controlling the motor to rotate constantly at the second preset speed, and measuring the torque of the motor rotating constantly at the second preset speed; and finally, working out a corresponding load torque by subtracting an average value of the torque of the motor rotating constantly at the first preset speed and the torque of the motor rotating constantly at the second preset speed from the accelerating torque of the motor accelerating from the first preset speed to the second preset speed according to the test results, and after a correction step, comparing the obtained load torque with a curve, pre-stored in a computer controller of the washing machine, of the corresponding relation of a load torque and a load weight to obtain a most similar weight data. The method has the advantages of high test accuracy and short test time.

Description

一种滚筒洗衣机自动称重的方法 A drum washing machine of the automatic weighing method

技术领域 FIELD

本发明涉及一种滚筒洗衣机自动称重的方法,特别涉及一种通过测试电机在不同的负载条件下加速到一定转速所需的转矩和在某一速度匀速运转时的转矩的不同,从而精确地检测出洗衣机内待洗衣物重量的滚筒洗衣机自动称重的方法。 The present invention relates to a method for automatic weighing drum washing machine, and more particularly to a machine by testing the torque required to accelerate to constant different speed and torque at a uniform speed operating under different load conditions, whereby a method to accurately detect the laundry weight of a drum washing machine of the automatic weighing of the washing machine. 背景技术 Background technique

洗衣机包括机体、机门、盛水筒、衣物筒、驱动和控制系统,机门位于机体的正面或顶面以进行打开和关闭,盛水筒通过悬挂机构固定在机体内,为朝向机门打开的圆筒形,衣物筒安装在盛水筒内,驱动系统驱动电动机旋转,控制系统控制洗衣机的全部洗涤过程。 Washing machine includes a body, door, washing tub, the laundry drum, drive and control systems, door located body front or top surface for opening and closing the washing tub by a suspension mechanism fixed to the body, towards the door open circle a cylindrical laundry drum mounted in the water storage cylinder, rotary drive motor driving system, the control system controls the entire washing process in the washing machine.

现在的用户在洗衣时都希望洗衣机能根据衣物的重量自动给出合适的水位,从而避免盲目选择,造成洗不干净或费水费电的情况发生,所以,目前的洗衣机都具有自动检测洗涤衣物重量的功能,用户只要将洗涤衣物放入到衣物筒内,选择好洗涤方式,并按下启动开关,洗衣机就会自动检测被放入到衣物筒内的洗涤衣物的重量,再自动加入与洗漆衣物量相匹配的水,然后就开始全部的洗涤过程。 Now the user wants in the laundry washing machine can automatically give an appropriate level according to the weight of the laundry, so to avoid blind selection, resulting in the case of a clean or wash water electric charges occurs, Therefore, the current detection with automatic washing machines wash laundry weight function where the user put the laundry to the laundry washing cylinder, a good selection of washing, and the start switch is pressed, the washing machine will automatically detect the laundry washing the laundry is put into the barrel by weight, and then automatically added to the wash the amount of paint that matches the laundry water, and then began the entire washing process.

对于自动检测待洗涤衣物量的方法,目前滚筒洗衣机普遍采用的是加称重模块的方法,如公开号为CN1690291的中国专利"一种洗衣机的称重方法及其实现所述方法的洗衣机"就公开了一种利用称重模块进行检测衣物量的方法,该方法是将洗衣机中的一个弹性支撑减振器设为带位移传感器的空气阻尼式,由带连接环的气缸体、固定在气缸体上的线圈架、线圈、线圈接口、带连接环和内孔的铁磁活塞杆及密封环组成,位移传感器经称重模块与微处理器连接,称重模块包括整流、低通滤波、高增益放大、时序产生、方波等电路和接口,进而检测洗衣机内的待洗衣物的重量。 A method for automatically detecting an amount of laundry to be washed, the drum washing machine is currently widely used method is to add weighing module, as disclosed No. "weighing method and a washing method of the washing machine realized" on the Chinese patent CN1690291 discloses a method of using a weighing module detects the amount of laundry, which is a damper elastically supporting the washing machine is set to a displacement sensor with an air damped, the cylinder block is connected with the ring fixed to the cylinder body on a bobbin, a coil, a coil interface with a piston rod connected to the ferromagnetic ring and the inner bore and the seal rings, a displacement sensor and a microprocessor connected via a weighing module, weighing module includes a rectifier, a low pass filter, high-gain amplification, timing generator, and an interface circuit such as a square wave, thereby detecting the laundry weight inside the washing machine. 这种利用加称重模块的方法,不但成本高,而且安装也比较困难。 Plus weighing module using this method, not only costly, but also more difficult to install.

另外,为了提高检测精度及降低成本,在现有技术中,也有滚筒洗衣机利用检测电机在不同负载条件下的转速及达到某一转速所需要的时间、电压等参数,进行待洗衣物量的检测。 In order to improve the detection accuracy and reduce costs, in the prior art, there are drum type washing machine using the detected motor speed under different load conditions and reaches a rotational speed required time and voltage parameters, the laundry amount to be detected.

如公告号为CN1350086的中国专利"滚筒式洗衣机",就公开了一种洗涤物重量的检测方法,在开始洗漆运转的时刻,通过反馈控制使电动机的转速上升至100rpm 之后,在对电动机的供电为一定的状态下使电动机加速,检测电动机的转速从110rpm 变为230rpm为止的上升时间。 After the announcement as Chinese patent No. CN1350086 "drum-type washing machine", it is disclosed a method of detecting laundry weight, began to wash the paint at the time of operation by feedback control the motor speed up to 100 rpm, the motor of power to accelerate the motor at a constant state, the rotational speed of the motor detected from the rise time until changes 110rpm 230rpm. 电动机上升至300rpm之后,使其呈自由旋转状态, 检测电动机的转速从290rpm下降至200rpm为止的下降时间。 After the motor at 300 rpm to rise, so that in a free rotation state, the rotation speed of the motor detected from 290rpm to decrease until the fall time 200rpm. 此后,用上升时间和下降时间来检测洗涤物的重量。 Thereafter, the rise time and fall time to detect the weight of laundry. 在该重量检测中,根据上升时间与下降时间之比检测平衡状态,根据该检测结果修正重量,该种方法需要分别测试转速上升时间和转速下降时间,会造成测试的时间较长。 The weight detection in accordance with the rise time and fall time than the detection state of equilibrium, by weight based on the detection result of the correction, the test method two speed rise time and fall time of the rotational speed, will result in longer test times.

再如公开号为CN1566458的中国专利"洗衣机的衣物量检测方法",它在利用反相电机直接驱动洗涤桶或搅拌器的洗衣机中,包括由以下阶段组成,即如果有洗涤指令输入,使搅拌器加速的阶段;对搅拌器的旋转速度达到设定速度所需的时间进行计时的阶段;将计时得到的时间与己设定的按时间区分的衣物量表进行比较,从而检测出衣物量的阶段。 Another example is disclosed in Chinese patent No. CN1566458 "laundry amount detection method of the washing machine", directly by reverse-phase drive motor for washing machines a washing tub or an agitator, comprising consisting of a phase, i.e., if the washing command input, the stirring an acceleration stage; the rotation speed of the agitator of time required to reach the set speed stage clocking; distinguish the time of the laundry timing obtained had a set time scale compared to the amount of laundry detected stage.

又如公开号为CN1821477的中国专利"滚筒式洗衣机及其检测衣物重量的方法", 它能够计算通过相控施加至马达的输入电压的比,直到马达达到确定转数为止,从而精确地检测容置在与马达连接的滚筒中的衣物重量或衣物离心量。 Another example is disclosed in Chinese patent No. CN1821477 "drum type washing machine and a method of detecting laundry weight", it can be calculated by phasing than the input voltage applied to the motor until the motor reaches a determined number of revolutions, thereby accurately detecting the volume weight of the laundry or the amount of laundry placed in the centrifuge drum connected to the motor. 该滚筒式洗衣机包括:马达,用于使滚筒旋转;以及控制单元,用于依据洗涤操作来控制该马达的转数,并且计算施加到该马达的输入电压的比、即计算改变的电压值,以确定容置在该滚筒中的衣物重量。 The drum type washing machine comprising: a motor for rotating the drum; and a control unit for controlling the washing operation according to the number of revolutions of the motor, and calculates the input voltage is applied to the ratio of the motor, i.e., the voltage value of the calculated change, to determine received in the drum of the laundry weight.

上述这些方法在应用中,对于较小的负载或摩擦力很大的时候,误差可能会较大,达不到自动称重的要求。 Application of these methods, for the smaller load or a large frictional force when the error may be greater, reach automatic weighing requirements. 发明内容 SUMMARY

本发明主要目的在于解决上述问题,提供一种检测时间短,并可以高精度检测洗衣机内待测衣物重量的滚筒洗衣机自动称重的方法。 The main object of the present invention is to solve the above problems, there is provided a method of detecting a short time, and can accurately detect the weight of the laundry washing machine under test drum washing machine of the automatic weighing method.

为实现上述发明目的,在本发明中提供了一种滚筒洗衣机自动称重的方法, To achieve the above object, there is provided a method of automatic weighing drum washing machine of the present invention,

洗衣机预先设定电机的第一预定转速、第二预定转速,及电机负载转矩与负载重量的对应关系参数,自动称重包括如下步骤: The washing machine is set in advance a first predetermined motor speed, a second predetermined rotational speed, and the corresponding relationship between the load torque and load parameters by weight, comprising the steps of automatic weighing:

第一步骤,控制电机使电机达到第一预定转速,并使电机以第一预定转速匀速旋转,测出此时电机的转矩; A first step of controlling the motor so that the motor reaches a first predetermined rotational speed and the motor at a first predetermined rotational speed of uniform rotation, measured at this time torque of the motor;

第二步骤,控制电机使电机从第一预定转速加速到第二预定转速,测出电机从第一预定转速上升到第二预定转速时的上升转矩; A second step of controlling the motor to accelerate the motor from a first predetermined rotational speed to a second predetermined rotational speed, measured from a first predetermined motor speed rises to increase torque when a second predetermined rotational speed;

第三步骤,控制电机以第二预定转速匀速旋转,测出此时电机的转矩;第四步骤,根据上述第一步骤至第三步骤的检测结果,计算相应的负载转矩;第五步骤,根据计算得出的负载转矩,进一步确定洗衣机的负载重量。 A third step of controlling the motor at a second predetermined rotational speed of uniform rotation, measured at this time torque of the motor; and a fourth step of, based on the detection result of the first step to the third step, calculating a corresponding load torque; a fifth step the calculated load torque, the washing machine further determines the load weight. 本发明的进一步改进在于,在上述第一步骤中还包括:在控制电机达到第一预 Further improvement of the present invention is characterized in that the first step further comprises: controlling the motor reaches a first pre-

定转速之前,还包括一个先控制电机使电机达到比第二预定转速更高的第三预定转 Before predetermined speed, further comprising a first motor to control the motor reaches a second predetermined rotational speed higher than a third predetermined rpm

速,再减速至第一预定转速的过程。 Speed, then to decelerate during a first predetermined speed.

在上述第一步骤中,控制电机使电机在开始启动后,以最大加速度达到第三预 In the first step, the control motor after the motor started at the maximum acceleration of the third pre-

定转速。 Constant speed.

在上述第二步骤中,控制电机使电机以最大加速度从第一预定转速达到第二预定转速。 In the second step, the motor control the motor reaches a second predetermined maximum acceleration speed from a first predetermined rotational speed.

上述第四步骤中的负载转矩,是基于用所述电机从第一预定转速上升至第二预定转速的上升转矩减去以第一预定转速和第二预定转速匀速旋转的转矩的平均值所得到的差值来确定的。 The fourth step in the load torque, based on a first predetermined speed up to the rising torque of the second motor with the predetermined rotational speed to a first predetermined rotation speed minus the average and the second predetermined rotational speed of uniform rotation torque the resulting difference value determined.

优选地,上述第四步骤中还包括一个修正步骤:当计算得出一个负载转矩后,再重复至少一次上述第一至第四步骤,将每次得出的负载转矩数值取平均值,作为最终的负载转矩。 Preferably, the fourth step of correcting further comprises a step of: when a load torque is calculated after repeated at least once the above-described first to fourth steps, the load torque obtained per averaged value, as a final load torque.

上述第五步骤中的洗衣机的负载重量,是基于所述计算得出的负载转矩与已存入在洗衣机电脑控制器中的负载转矩与负载重量的对应关系曲线进行比较,从而确定出一个最相近似的重量数据。 Weight of the load of the washing machine in the fifth step, the comparison is based on the corresponding relationship between the calculated loading torque and the washing machine has been stored in the controller in the load torque and the weight of the load curve, thereby determining a like most similar weight data.

综上内容,本发明通过测试电机在不同的负载条件下加速到一定转速的所需的转矩和在某一速度匀速运转时的转矩,用上升时测得的转矩减去匀速时测得的转矩,就得到在电机转动时负载的转矩,通过计算便可以得到负载的重量,此种方法更好地解决了小负载电流变化不明显和负载较多时摩擦力较大,测出的数值偏差较大的问题,从而使自动称重更为准确,精度更高,另外采用此种方法可以縮短测试时间,30秒左右就可以准确地测出数据。 SUMMARY In summary, the present invention is by testing the torque required to accelerate the motor to a certain rotational speed and torque at a uniform speed operating under different load conditions, when measured by the rising subtracting the measured torque uniform resulting torque, the load torque is obtained when the rotation of the motor, it can be obtained by calculating the weight of the load, this method better address the small load current and load change significantly greater frictional force is large, the measured the large deviation value of the question, so that the automatic weighing more accurate, higher accuracy, using this method can further shorten the test time, about 30 seconds can be accurately detected data.

在控制电机达到第一预定转速之前,增加了一个先控制电机使电机达到比第二预定转速更高的第三预定转速,再减速至第一预定转速的过程,这样可以使衣物筒内的干的衣物在较大的离心力作用下很好的贴于衣物筒的内壁上,不但可以提高检测精度,另外也可以縮短检测时间。 Before controlling the motor reaches a first predetermined rotational speed, increasing the dry motor to control a first motor reaches the predetermined rotational speed higher than the third predetermined second rotational speed, and then decelerated to the process of the first predetermined rotational speed so that the laundry can barrel the laundry is large centrifugal forces a good fit on the inner wall of the laundry drum, not only can improve detection accuracy, the detection time can be shortened further.

在对衣物筒内的衣物进行自动称重的过程中,衣物筒内衣物的平衡状态未必是一定的,即使是相同重量的衣物,由于平衡状态的不同,其电机在匀速旋转时的转矩及上升转矩都会有所差异,为了避免这种差异造成检测精度的降低,所以本发明增加了一个修正的步骤,也就是采用了多次检测计算得出负载转矩,然后取平均值的方法,这样就足以修正由于平衡状态的不同所造成的检测偏差,进一步提高检测精度。 In the process of the laundry in the laundry automatic weighing cylinder, the equilibrium state of laundry inside the drum the laundry is not constant, even for the same weight of the laundry, due to different equilibrium state, which is the motor torque at a constant speed of rotation and increase in torque will vary, resulting in differences in order to avoid this reduction in the detection accuracy, the present invention adds a correction step, is calculated using the load torque detected multiple times, and then averaging method, This correction detection sufficient bias due to different equilibrium states caused, further improving the detection accuracy. 附图说明 BRIEF DESCRIPTION

图1是本发明一种滚筒洗衣机的结构示意图; 图2是本发明流程图; FIG 1 is a schematic structural diagram of a drum washing machine of the present invention; FIG. 2 is a flowchart of the present invention;

图3是负载转矩与负载重量的关系曲线图。 FIG 3 is a graph of load torque with the load weight.

如图1至图3所示,机体l,机门2,盛水筒3,衣物筒4,电机5,供水管路6, 排水管路7,排水阀8,进水阀9。 As shown in FIG. 1 to FIG. 3, the body L, door 2, drum container 3, laundry drum 4, motor 5, supply line 6, the drain path 7, the drain valve 8, the inlet valve 9. 具体实施方式 detailed description

下面结合附图与具体实施方式对本发明作进一步详细描述: The present invention will be described in further detail in conjunction with the accompanying drawings DETAILED DESCRIPTION:

如图1所示,洗衣机包括机体1、机门2、盛水筒3、衣物筒4、控制面板、驱动和控制系统。 1, the washing machine includes a body 1, a door 2, water storage drum 3, laundry drum 4, the control panel, drive and control systems. 机体1整体呈矩形箱体状,机门2设置在其正面的中间部位,盛水筒3通过悬挂机构固定在机体1内,为朝向机门2打开的圆筒形,衣物筒4安装在盛水筒2内,打开机门2就可以向衣物筒4内投放要洗的衣物或者将其取出,控制面板设置在机体1的表面上,用于用户进行洗涤程序的选择,驱动系统可以驱动电机5旋转,衣物筒4通过轴承与电机5的转轴相连接,因此驱动电机5转动就可以直接带动衣物筒4旋转,从而洗涤衣物筒4内的衣物,控制系统控制洗衣机的全部洗涤过程,根据由控制单元检测的衣物量、水位以及根据用户设定的洗衣程序,全自动控制洗衣程序。 Whole body 1 has a rectangular box shape, the door 2 is provided at its front middle portion, drum container 3 is fixed in the body 1, the door 2 is opened toward the cylindrical laundry drum 4 is mounted in the water tub through the suspension mechanism 2, the door 2 can be opened to run the laundry into the laundry drum 4, or remove, the control panel is provided on a surface of the body 1 for a user to select the washing program, the system can drive the rotary drive motor 5 , laundry drum 4 is connected via a bearing to the spindle motor 5, the drive motor 5 rotates can directly drive the laundry drum 4 is rotated so that the laundry in the 4 washing laundry drum, the entire washing process of the system controlling the washing machine control, in accordance with the control unit detected amount of laundry, and the water level set by the user according to the washing program, the washing program automatic control.

洗衣机盛水筒3的上部接有供水管路6,用于向盛水筒3内供入洗漆所需的洗涤水,盛水筒3的下部接有排水管路7,排水管路7是用于当一个洗涤过程结束时将盛水筒3内的洗涤水排出,在排水管路7上设有一个排水阀8,在供水管路6上设有一个进水阀9。 An upper portion of the washing machine drum container 3 is connected to a water supply conduit 6, the washing water is supplied into the drum container 3 into the wash paint required for the lower portion of drum container 3 is connected with a drain line 7, when the drain line 7 is used when a washing process is finished the washing water in water tub 3 is discharged, it is provided with a drain valve 8 on the drain line 7, provided with a water inlet valve 9 in the supply line 6.

洗衣时,首先打开机门2,向衣物筒4内投入需洗涤的衣物,然后向设在供水管路6上的洗衣粉投入口中投入洗衣粉,接通电源开关,用户在控制面板上根据洗涤物的种类选择操作模式,输入启动操作的指令,洗衣机控制系统即开始控制全部操作过程。 When washing, first open the door 2, put clothes to be washed into the laundry drum 4, and then provided to the water supply line 6 into the detergent washing powder into the mouth, the power switch is turned on, according to the user on the control panel was washed species of the selected operation mode, the operation start instruction input, the control system starts the washing machine controls the overall operation.

在洗衣程序启动后,首先要检测投入到衣物筒4内的衣物量,然后打开进水阀9,通过供水管路6向盛水筒3内供入混有洗衣粉的洗涤水,进水一直持续到水达到与检测到的衣物量相匹配的水位为止。 After the washing process starts, first detected amount of clothes put into the laundry drum 4, and then open the inlet valve 9, supplied by supply line 6 into the drum container 3 into the wash water mixed with detergent, the water continues the amount of water reaches the laundry to match the detected level.

当洗衣机盛水筒3内的水位达不到设定水位时,进水阀9一直打开,当水位达到设定水位时,控制单元就会发出控制指令将进水阀9关闭,从而停止向盛水筒3内供水。 When the water level inside the washing machine drum container 3 reach the set water level, the inlet valve 9 has been opened, when the water level reaches the set level, the control unit will send a control instruction of the intake valve 9 is closed, thereby stopping the water tub 3 in the water supply. 此时,加入到盛水筒3内的水会被衣物筒4内的衣物所吸收,盛水筒3内的水位会发生下降,因此,还需要和上面相同的方法进行补充进水,直到完全达到规定的水位。 At this time, the water in water tub 3 to the laundry is absorbed by the laundry in the drum 4, the water level in the water tub 3 is lowered may occur, therefore, we need the same manner as above to supplement the water until fully specified the water level.

当盛水筒3内的水位达到规定水位后,洗衣机就可以开始洗涤程序了,洗涤操作过程完成后,盛水筒3下面的排水阀8就会打开,将盛水筒3内的洗涤水排出,然后再实行脱水操作。 When the water level inside the washing tub 3 reaches the predetermined water level, the washing machine can start the washing program, the washing operation is completed after the procedure, the following drum container 3 will open the drain valve 8, the washing water in water tub 3 is discharged, and then carry out dehydration operation.

在脱水操作进行了规定的时间后,再次将排水阀8关闭,打开进水阀9,向盛水筒3内加入新水,开始进行漂洗操作。 After a predetermined time in the dehydration operation, the drain valve 8 is closed again, the inlet valve 9 open, fresh water is added to the washing tub 3, rinsing operation is started.

在进行了规定时间的漂洗操作之后,再进行脱水操作,反复上述过程,至所有的洗衣操作过程全部结束,最后关闭电源开关,结束操作。 After performing the rinsing operation for a predetermined time, and then the dehydration operation, the above process is repeated to process all operation all over the laundry, and finally turn off the power switch, the operation ends.

下面参照图2和图3说明本发明的工作流程。 Referring to Figures 2 and 3 illustrate the operation of the present invention. 用户先打开机门2,向衣物筒4内投入需洗涤的衣物,关闭机门2,然后向设在供水管路6上的洗衣粉投入口中投入洗衣粉,接通电源开关,用户在控制面板上根据洗涤物的种类选择操作模式,输入启动操作的指令,洗衣机控制系统即开始控制全部操作过程。 Power user hit the door 2, put clothes to be washed into the laundry drum 4, close the door 2, and then into the mouth of the supply line 6 is provided on the detergent into the detergent, the power switch is turned on, the user control panel on selecting the operation mode according to the type of laundry, the operation start instruction input, the control system starts the washing machine controls the overall operation.

在洗衣程序启动后,首先要检测投入到衣物筒4内的衣物量,此时,洗衣机控制系统中的电脑控制器上的CPU发出称重指令给变频板,变频板上的CPU接受到指令后,通过CPU驱动电机5开始工作,进入称重程序。 After the washing program starts, first detected amount of clothes put into the laundry drum 4, this time, the CPU in the washing machine control system computer controller issues a load command to the inverter board, CPU board received frequency instruction , the CPU 5 starts the drive motor to work into the weighing procedure.

洗衣机预先设定电机5的第一预定转速、第二预定转速,及电机5负载转矩与负载重量的对应参数关系曲线,并存入洗衣机电脑控制器中,具体步骤如下: A first predetermined rotational speed is set in advance washing machine motor 5, a second predetermined rotational speed, and the corresponding parameters of the load torque curve of the motor 5 and the weight of the load, and stored in the washing machine controller, the specific steps are as follows:

第一步骤:首先,驱动电机5启动,带动衣物筒4旋转,对电机5进行反馈控制,以使电机5的转速快速上升至第三预定转速(例如为300 rpm),使得衣物筒4 内的洗涤衣物由于离心力的作用而较好地贴附在衣物筒4的圆周内壁上,为了能更好、更快速地将洗涤衣物贴附在衣物筒4的圆周内壁上,同时也为了縮短检测时间, 可以控制电机5以最大加速度上升至第三预定转速(300 rpm)。 First Step: First, the drive motor 5 is started, driving the laundry drum 4 is rotated, the motor 5 performs feedback control so that the speed of the motor 5 quickly rises to a third predetermined rotational speed (for example, 300 rpm), such that the laundry drum 4 washing the laundry by centrifugal force and is preferably affixed in the circumferential inner wall of the laundry drum 4, in order to better and more quickly washing the laundry stuck on the inner wall of laundry drum 4 circumference, but also in order to shorten the detection time, 5 may control the motor at the maximum acceleration up to a third predetermined rotational speed (300 rpm).

接着,再控制电机5的转速以最大减速度降至第一预定转速(例如为100rpm), 此时,也可以以电机5的默认减速度下降,并控制电机5在第一预定转速(100rpm) 匀速运转,通过转矩检测装置测出此时电机5的转矩M1,并存储转矩M1。 Next, the motor 5 and then controls the rotational speed at a maximum speed to a first predetermined speed reduction (for example, 100 rpm), at this time, may be lowered to a default deceleration of the motor 5, and controls the motor 5 at a first predetermined rotational speed (100 rpm) constant speed operation, the motor M1 torque measured at this time by the torque detecting means 5, and stores the torque M1.

第二步骤:控制电机5使电机5从第一预定转速(100rpm)加速到第二预定转速(例如为150rpm),测出电机5从第一预定转速(100rpm)上升到第二预定转速(150rpm)时的上升转矩M3,并存储转矩M3。 Second Step: 5 controls the motor to accelerate the motor 5 from a first predetermined rotational speed (100 rpm) to a second predetermined rotational speed (for example 150rpm), the measured motor 5 rises from a first predetermined rotational speed (100 rpm) to a second predetermined rotational speed (150 rpm rise when) torque M3, and storage torque M3.

从第一预定转速(lOOrpm)上升到第二预定转速(150rpm)时,可以控制电机5 以最大加速度上升,也可以以电机的默认加速度上升。 Rising from a first predetermined rotational speed (lOOrpm) to a second predetermined rotational speed (150 rpm), the motor 5 may be controlled to increase the maximum acceleration, a default may be increased acceleration of the motor.

第三步骤:控制电机5以第二预定转速(150rpm)匀速旋转,通过转矩检测装置测出此时电机5的转矩M2,并存储转矩M2。 A third step of: controlling the motor 5 at a second predetermined rotational speed (150 rpm) for uniform rotation, the motor M2 detected at this time the torque by the torque detecting means 5, and stores the torque M2.

第四步骤:根据上述第一步骤至第三步骤的检测结果,计算相应的负载转矩M, 负载转矩M的依据如下公式计算: Fourth Step: The detection result of the first step to the third step, calculating a load torque corresponding to M, M load torque calculated based on the following equation:

M=M3- (Ml+M2) /2 M = M3- (Ml + M2) / 2

在理想状态下,依据上述一次的检测结果所得出的负载转矩M就可以对衣物筒4 内的衣物筒进行判断,但是衣物筒4内的衣物的平衡状态未必是一定的,即使是相同重量的衣物,由于平衡状态的不同,其电机在匀速旋转时的转矩及上升转矩都会有所差异,为了避免这种差异造成检测精度的降低,所以本发明增加了一个修正的步骤。 Under ideal conditions, based on the above detection result derived primary load torque M can be determined in the laundry drum the laundry drum 4, but the balance of the laundry inside the laundry drum 4 is not constant, even if the same weight clothes, due to different equilibrium state of uniform rotation at which the motor torque will vary and increase torque, caused by differences in order to avoid this reduction in the detection accuracy, the present invention adds a correction step.

修正的步骤包括:当通过前四个步骤计算得出一个负载转矩M后,再重复至少一次上述第一至第四步骤,较理想的情况是再重复两次上述步骤,次数少会得不到较理想的修正结果,次数过多则会延长检测时间。 Correction step comprises: when a load torque M calculated by the first four steps, repeated at least once the above-described first to fourth steps, the ideal situation is repeated two more times the above steps, could not be fewer times will amendments to the ideal result, too many times the detection time will be extended.

将每次得出的负载转矩M的数值取平均值,作为最终的负载转矩M'。 The resulting value of each load torque M are averaged, as the final load torque M '. 第五步骤:根据计算得出的负载转矩M',进一步确定洗衣机的负载重量G。 Fifth Step: The calculated load torque M ', the washing machine further determines the load weight G. 洗衣机的负载重量G是基于所述计算得出的负载转矩M'与已存入在洗衣机电脑控制器中的负载转矩与负载重量的对应关系曲线进行比较,从而确定出一个最相近似的重量数据。 Load weight G of the washing machine is calculated based on the load torque M 'has been stored in corresponding relationship in the washing machine control load torque curve and the weight of the load, thereby determining a most approximating weight data.

如图3所示,负载转矩与负载重量的对应关系曲线是通过反复比较试验得出的,并事先存入洗衣机电脑控制器中,图3中的横坐标为负载重量,纵坐标为负载转矩。 3, the curve corresponding to the load torque and the load weight is obtained by repeating the comparison test, and stored in advance in the washing machine controller, the abscissa in FIG. 3 is a load weight, the ordinate is the load transfer moment.

本发明将第一预定转速和第二预定转速分别设定为100rpm和150rpm,并不是特定的数值,第一预定转速可设定在100rpm至150rpm之间的任意数值,第二预定转速可相应地设定为150rpm至200rpm之间的任意数值,100rpm和150rpm是最优选的数值,检测精度会更高。 The present invention is a first predetermined rotational speed and the second predetermined speed set to 100rpm and 150 rpm, respectively, are not specific numerical values, a first predetermined rotational speed can be set to any value between 150 rpm 100rpm, the second predetermined speed can be correspondingly set to any value between 150rpm to 200rpm, 100rpm and 150rpm values ​​are most preferred, the detection accuracy will be higher.

在第一步骤中,首先将电机5的转速以最大加速度上升至第三预定转速(300rpm),将第三预定转速设定为比第二预定转速(150rpm)高,是为了使衣物筒4内的衣物更好地贴于衣物筒4的内壁上,进一步提高检测精度。 In a first step, first, the rotational speed of the motor 5 is increased to a third predetermined rotational speed to a maximum acceleration (at 300 rpm), the third predetermined rotational speed is set (150 rpm) higher than the second predetermined rotational speed, the laundry is to make the inner cylinder 4 laundry better conform to the inner wall of laundry drum 4, to further improve the detection accuracy.

洗衣机在依据上述步骤检测出待洗衣物的重量后,就可以根据衣物量确定相应的标准水位,进而开始所有洗涤程序。 After washing machine detects the weight of the laundry according to the above steps, the water level can be determined according to the corresponding standard amount of laundry, wash program further starts all.

如上所述,结合附图和实施例所给出的方案内容,可以衍生出类似的技术方案。 As described above, in conjunction with drawings and embodiments scheme given herein, may be derived similar technical solutions. 但凡是未脱离本发明技术方案的内容,依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化与修饰,均仍属于本发明技术方案的范围内。 However, all without departing from the technical solutions of the present invention, any simple modification based on the technical essence of the present invention is made to the above embodiment of the embodiment, the equivalent changes and modifications, provided they fall within the scope of the present invention.

Claims (7)

  1. 1、一种滚筒洗衣机自动称重的方法,其特征在于:洗衣机预先设定电机的第一预定转速、第二预定转速,及电机负载转矩与负载重量的对应关系参数,自动称重包括如下步骤: 第一步骤,控制电机使电机达到第一预定转速,并使电机以第一预定转速匀速旋转,测出此时电机的转矩; 第二步骤,控制电机使电机从第一预定转速加速到第二预定转速,测出电机从第一预定转速上升到第二预定转速时的上升转矩; 第三步骤,控制电机以第二预定转速匀速旋转,测出此时电机的转矩; 第四步骤,根据上述第一步骤至第三步骤的检测结果,计算相应的负载转矩; 第五步骤,根据计算得出的负载转矩,进一步确定洗衣机的负载重量。 1. A method for automatic weighing drum washing machine, characterized in that: the washing machine is set in advance a first predetermined motor speed, a second predetermined rotational speed, and the corresponding relationship between the load torque and load parameters by weight, comprising the automatic weighing steps: a first step of controlling the motor so that the motor reaches a first predetermined rotational speed and the motor at a first predetermined rotational speed of uniform rotation, measured at this time torque of the motor; a second step of controlling the motor to accelerate the motor from a first predetermined rotational speed to a second predetermined rotational speed, measured from a first predetermined motor speed rises to increase torque when a second predetermined rotational speed; a third step of controlling the motor at a second predetermined rotational speed of uniform rotation, measured at this time torque of the motor; first step four, according to the detection result of the first step to the third step, calculating a corresponding load torque; a fifth step, according to the calculated load torque, the washing machine further determines the load weight.
  2. 2、 根据权利要求l所述的滚筒洗衣机自动称重的方法,其特征在于,上述第一步骤中还包括:在控制电机达到第一预定转速之前,还包括一个先控制电机使电机达到比第二预定转速更高的第三预定转速,再减速至第一预定转速的过程。 2. The method of claim l drum washing machine as claimed in claim automatic weighing, wherein the first step further comprises: prior to controlling the motor reaches a first predetermined rotational speed, further comprising a first motor to control the motor to achieve than the first two third predetermined rotational speed higher predetermined speed, then decelerate to a first predetermined process speed.
  3. 3、 根据权利要求2所述的滚筒洗衣机自动称重的方法,其特征在于:在上述第一步骤中,控制电机使电机在开始启动后,以最大加速度达到第三预定转速。 3. The method of claim 2 automatic weighing drum type washing machine as claimed in claim, wherein: in the first step, the control motor after the motor started in order to reach the third predetermined maximum acceleration speed.
  4. 4、 根据权利要求1至3任意项所述的滚筒洗衣机自动称重的方法,其特征在于: 在上述第二步骤中,控制电机使电机以最大加速度从第一预定转速达到第二预定转速。 4. The method of any of the drum washing machine 13 to the automatic weighing claim, wherein: in the second step, the motor control the motor reaches a second predetermined maximum acceleration speed from a first predetermined rotational speed.
  5. 5、 根据权利要求l所述的滚筒洗衣机自动称重的方法,其特征在于:上述第四步骤中的负载转矩,是基于用所述电机从第一预定转速上升至第二预定转速的上升转矩减去以第一预定转速和第二预定转速匀速旋转的转矩的平均值所得到的差值来确定的。 5. The method for the drum washing machine of claim l automatic weighing claim, wherein: the fourth step in the load torque, the motor is increased by a first predetermined rotational speed from a rotational speed is increased to a second predetermined based torque minus the mean value of a first predetermined rotational speed and the second predetermined rotational speed of uniform rotation torque obtained determined.
  6. 6、 根据权利要求5所述的滚筒洗衣机自动称重的方法,其特征在于,上述第四步骤中还包括一个修正步骤:当计算得出一个负载转矩后,再重复至少一次上述第一至第四步骤,将每次得出的负载转矩数值取平均值,作为最终的负载转矩。 6. The method of claim 5 automatic weighing drum type washing machine as claimed in claim, wherein said fourth step further includes a correction step: When a load torque is calculated, and then repeated at least once to the above-described first a fourth step of each load torque values ​​obtained were averaged, as the final load torque.
  7. 7、 根据权利要求5或6所述的滚筒洗衣机自动称重的方法,其特征在于:上述第五步骤中的洗衣机的负载重量,是基于所述计算得出的负载转矩与已存入在洗衣机电脑控制器中的负载转矩与负载重量的对应关系曲线进行比较,从而确定出一个最相近似的重量数据。 7. The method as claimed in claim 5 or drum washing machine of the automatic weighing 6, characterized in that: the load weight of the washing machine in the fifth step, based on the calculated load torque and have been deposited in a correspondence relationship with the load weight of the load torque controller washing machine curve, thereby determining a most approximating the weight data.
CN 200810007636 2008-03-03 2008-03-03 Self-weighing method for drum-type washing machine CN101526388B (en)

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CN102538922A (en) * 2011-12-31 2012-07-04 无锡小天鹅股份有限公司 Weighing method of rolling drum washing machine driven by asynchronous motor
CN102733142A (en) * 2012-06-26 2012-10-17 无锡小天鹅股份有限公司 Device and method for detecting unbalance of washing machine
WO2014186992A1 (en) * 2013-05-23 2014-11-27 无锡小天鹅股份有限公司 Method for judging weight of clothes for series motor drum washing machine
CN105155188A (en) * 2015-08-06 2015-12-16 无锡飞翎电子有限公司 Weighing method for variable- frequency pulsator washing machine
CN105256508A (en) * 2015-10-30 2016-01-20 珠海格力电器股份有限公司 Weighing method and device of washing machine
WO2016078337A1 (en) * 2014-11-21 2016-05-26 无锡小天鹅股份有限公司 Washing machine and method for determining load weight of washing machine
CN106544814A (en) * 2016-09-30 2017-03-29 无锡小天鹅股份有限公司 Washing machine and wet cloth weighing method and device thereof
CN106661797A (en) * 2014-08-29 2017-05-10 海尔亚洲株式会社 Drum washing machine
CN106757974A (en) * 2016-11-24 2017-05-31 四川长虹电器股份有限公司 Clothes weighing method of roller washing machine

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KR100425723B1 (en) 2001-07-10 2004-04-03 엘지전자 주식회사 Method of detecting the weight of laundry in washing machine of sensorless bldc motor

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Publication number Priority date Publication date Assignee Title
CN102538922A (en) * 2011-12-31 2012-07-04 无锡小天鹅股份有限公司 Weighing method of rolling drum washing machine driven by asynchronous motor
CN102733142A (en) * 2012-06-26 2012-10-17 无锡小天鹅股份有限公司 Device and method for detecting unbalance of washing machine
WO2014186992A1 (en) * 2013-05-23 2014-11-27 无锡小天鹅股份有限公司 Method for judging weight of clothes for series motor drum washing machine
CN106661797A (en) * 2014-08-29 2017-05-10 海尔亚洲株式会社 Drum washing machine
CN105671848B (en) * 2014-11-21 2017-12-26 无锡小天鹅股份有限公司 Washing machine and a washing machine load weight determination method
WO2016078337A1 (en) * 2014-11-21 2016-05-26 无锡小天鹅股份有限公司 Washing machine and method for determining load weight of washing machine
CN105671848A (en) * 2014-11-21 2016-06-15 无锡小天鹅股份有限公司 Washing machine and method for determining load weight of washing machine
CN105155188A (en) * 2015-08-06 2015-12-16 无锡飞翎电子有限公司 Weighing method for variable- frequency pulsator washing machine
CN105155188B (en) * 2015-08-06 2018-03-16 无锡飞翎电子有限公司 Weighing method of frequency Washing Machine
CN105256508A (en) * 2015-10-30 2016-01-20 珠海格力电器股份有限公司 Weighing method and device of washing machine
CN106544814A (en) * 2016-09-30 2017-03-29 无锡小天鹅股份有限公司 Washing machine and wet cloth weighing method and device thereof
CN106757974A (en) * 2016-11-24 2017-05-31 四川长虹电器股份有限公司 Clothes weighing method of roller washing machine

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