Method for checking failures of washing machine electric motor loop and clothes amount detection circuit

Abstract

The invention discloses a method of detecting circuit fault for a washing machine motor, comprising the following steps: to input driving power to the motor and continue the input for a while; to stop inputting driving power to the motor and detect pulse count that is obtained in detection circuit of the amount of clothing per unit time after stop; to judge whether the pulse count per unit time is normal or not; if the pulse count per unit time is normal, the working state of the motor is normal; if not, the working state of the motor is abnormal. The invention meanwhile discloses a method of fault detection of the detection circuit of the amount of clothing, comprising the following steps: to input driving power to the motor and continue the input for a while; to detect pulse count that is obtained in detection circuit of the amount of clothing per unit time; to judge whether the pulse count per unit time is normal or not; if the pulse count per unit time is normal, the working state of the detection circuit of the amount of clothing is normal; if not, the working state of the detection circuit of the amount of clothing is abnormal. The invention solves the problems of fault detection of circuit for a washing machine motor and fault detection of detection circuit of the amount of clothing under the condition without increasing cost.

Description

technical field [0001] The invention relates to a washing machine, in particular to a method for detecting faults in the motor circuit of the washing machine and the clothes quantity detection circuit. Background technique [0002] Ordinary washing machines do not have the motor circuit detection function. When the motor circuit fails, if the user is not nearby, the washing machine will continue the washing process, but in fact the motor does not rotate, resulting in the clothes not being washed, but the water and electricity are still used, causing resource waste. Waste, but also delay the user's time. [0003] A fault judgment circuit can be specially set up for the motor circuit of the washing machine to realize the fault detection of the washing machine motor. However, this method will increase the cost. It is not advisable to set up a special fault judgment circuit to increase the cost due to faults. [0004] Due to the above reasons, it becomes a problem to be solved...

AI Technical Summary

Problems solved by technology

[0002] Ordinary washing machines do not have the motor circuit detection function. When the motor circuit fails, if the user is not nearby, the washing machine will continue the washing process, but in fact the motor does not rotate, resulting in the clothes not being washed, but the water and electricity are still used, causing resource waste. Waste, but also delay the user's time

[0003] A fault judgment circuit can be specially set up for the motor circuit of the washing machine to realize the fault detection of the washing machine motor. However, this method will increase the cost. It is not advisable to set up a special fault judgment circuit to increase the cost

Images