A method for detecting imbalance of washing machine, and a washing machine

Abstract

A washing machine and method for detecting imbalance of the washing machine, comprising the following steps: running a dehydration process, and performing an eccentricity detection action in a test dehydration process performing eccentricity detection test dehydration action; a sensor module performing a eccentricity detection action to detect the eccentricity of a machine in real time, and setting a preliminary dehydration curve; when running a low-speed drain, the sensor module detects the low-speed eccentricity in real time; determining whether the detected low-speed eccentricity exceeds a set value; if yes, then correcting the low-speed eccentricity, and if not, then proceeding to the next step; when running a high-speed drain, the sensor module detects a high-speed eccentricity in real time; determining whether the high-speed eccentricity of the high-speed drain exceeds a set value; if yes, then correcting the high-speed eccentricity, and if not, then ending with a high-speed draining.

1 . A method for detecting imbalance of a washing machine, comprising the following steps:
 S 1 , Running a dehydration process and performing an eccentricity detection action in a test dehydration process;   S 2 , Performing, with a sensor module, an eccentricity detection operation to detect an eccentricity state of the washing machine in real time and setting a preliminary dehydration curve;   S 3 , Performing a low-speed dehydration action in accordance with the preliminary dehydration curve, and the sensor module detecting a low-speed eccentricity in real time;   S 4 , Determining whether or not the detected low-speed eccentricity exceeds a first limit value;   S 5 , If a first determination result is YES, performing a low-speed eccentricity correcting operation, and if the first determination result is NO, proceeding to next step;   S 6 , Performing a high-speed dehydration action, and the sensor module detecting a high-speed eccentricity in real time;   S 7 , Determining whether or not the high-speed eccentricity exceeds a second limit value;   S 8 , If a second determination result is YES, performing a high-speed eccentricity correcting operation, and if the second determination result is NO, ending with the high-speed dehydration action.   
     
     
         2 . The method for detecting imbalance of the washing machine according to  claim 1 , wherein, the low-speed eccentricity correcting operation in step S 5  comprises the following steps:
 S 51 , Stopping the low-speed dehydration action; 
 S 52 , Correcting a dehydration curve; 
 S 53 , Performing the low-speed dehydration action in accordance with a corrected dehydration curve and returning to S 3 . 
 
     
     
         3 . The method for detecting imbalance of the washing machine according to  claim 2 , wherein, the low-speed eccentricity correcting operation is executed up to N times in S 5 , and the N satisfies: 0<N≦10. 
     
     
         4 . The method for detecting imbalance of the washing machine according to  claim 3 , wherein, when a number of performing the low-speed eccentricity correcting operation is more than N times in step S 5 , the following steps are performed:
 S 54 , Performing a correction operation of inflooding water for washing;   S 55 , Performing a drain operation;   S 56 , Returning to S 1 .   
     
     
         5 . The method for detecting imbalance of the washing machine according to  claim 4 , wherein, S 54  is executed up to M times, and M satisfies: 0<M≦10, if S 54  is executed more than M times, an alarm action is executed. 
     
     
         6 . The method for detecting imbalance of the washing machine according to  claim 1 , wherein, the high-speed eccentricity correcting operation in step S 8  comprises following steps:
 S 81 , Performing speed, acceleration correction action, the sensor module detecting the high-speed eccentricity in real time; 
 S 82 , Determining whether or not the high-speed eccentricity exceeds the second limit value; 
 S 83 , If the determination result is YES, executing a deceleration eccentricity correcting operation is executed and proceeding to the next step; if the determination result is NO, end with the high-speed dehydration action; 
 S 84 , Ending with a relative low-speed dehydration action. 
 
     
     
         7 . The method for detecting imbalance of the washing machine according to  claim 1 , wherein, the sensor module comprises a six-axis sensor,
 the six-axis sensor comprises a three-axis accelerometer and a three-axis gyroscope,   the three-axis accelerometer detects a linear acceleration and an inclination angle of an outer tub, and detects amplitude and direction of linear and gravitational acceleration combined,   the three-axis gyroscope detects a rotational angular velocity of the outer tub and tracks a moving direction of the outer tub and a rotational movement.   
     
     
         8 . The method for detecting imbalance of the washing machine according to  claim 7 , wherein, the sensor module further comprises an arithmetic control chip:
 in the eccentricity detection action in the test dehydration process and the low-speed dehydration action stages, the arithmetic control chip corrects the first and second limit value of the eccentricity and analyzes an algorithm to calculate the dehydration curve of not thumping a casing according to data detected by the three-axis accelerometer and the three-axis gyroscope and a distance between the outer tub and the casing;   during the high-speed dehydration action stage or relative low-speed dehydration action stage, running in accordance with the dehydration curve corrected by the velocity and acceleration based on the algorithm, and doing a real-time correction based on data from three-axis accelerometer and three-axis gyroscope, maintaining a not thumping the casing state until the dehydration process is complete.   
     
     
         9 . The method for detecting imbalance of the washing machine according to  claim 1 , wherein, the sensor module is installed on a bottom of the outer tub or on a side of the outer tub or on a boom. 
     
     
         10 . The method for detecting imbalance of the washing machine according to  claim 1 , wherein, a real-time detection position of the sensor module is set at least at one clock point on an upper part of the outer tub, in a middle of the outer tub, and/or on a lower part of the outer tub. 
     
     
         11 . A washing machine using the method according to  claim 1 , wherein, the washing machine comprises an eccentricity detecting device,
 the eccentricity detecting device comprises a control module, a motor driving module and a sensor module,   the motor drive module and the sensor module are respectively connected with the control module, or the motor driving module and the sensor module are communicated through the control module in real time.   
     
     
         12 . A washing machine using the method according to  claim 1 , comprising a main control module and function control modules respectively connected with corresponding loads,
 wherein, the function control modules comprise a sensor module,   the sensor module and the main control module are mutually independent;   the main control module and the sensor module are respectively connected with a data bus and a power bus,   a sensor module load corresponding to the sensor module is an acceleration sensor, a six-axis sensor, or a nine-axis sensor for unbalance detection of the washing machine.   
     
     
         13 . The washing machine using the method according to  claim 12 , wherein, the sensor module load is set on a bottom of an outer tub or on a side wall of the outer tub or at a boom;
 the sensor module is arranged on the sensor module load or near the sensor module load.   
     
     
         14 . The washing machine using the method according to  claim 12 , wherein,
 the function control modules at least comprise a motor control module, a water inlet control module and a drainage control module,   at least one of the function control modules is provided independently from the main control module,   the main control module and each independent setting function control module are respectively connected with the data bus and the power bus.   
     
     
         15 . The washing machine using the method according to  claim 12 , wherein,
 the function control modules also include: a door lock control module, a drying control module, an automatic delivery control module, or a heating control module, or a combination of at least two of them.   
     
     
         16 . The method for detecting imbalance of the washing machine according to  claim 1 , wherein, the real-time detection position of the sensor module is respectively set at 8 clock points of three levels of the upper part, the middle part and the lower part of the outer tub. 
     
     
         17 . The washing machine using the method according to  claim 14 , wherein,
 all of the function control modules are independently set with the main control module.   
     
     
         18 . The washing machine using the method according to  claim 13 , wherein,
 the function control modules also include: a door lock control module, a drying control module, an automatic delivery control module, or a heating control module, or a combination of at least two of them.   
     
     
         19 . The washing machine using the method according to  claim 14 , wherein,
 the function control modules also include: a door lock control module, a drying control module, an automatic delivery control module, or a heating control module, or a combination of at least two of them.