A method for detecting faults in washing machine motor circuit and laundry quantity detection circuit

A technology of clothes count and detection circuit, which is applied in the field of washing machines, can solve the problems of delaying user time, increasing costs, waste of resources, etc., and achieve the effect of avoiding empty water consumption

Active Publication Date: 2011-11-30
HAIER GRP CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • A method for detecting faults in washing machine motor circuit and laundry quantity detection circuit
  • A method for detecting faults in washing machine motor circuit and laundry quantity detection circuit
  • A method for detecting faults in washing machine motor circuit and laundry quantity detection circuit

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Embodiment Construction

[0050] Please see figure 1 , is the laundry quantity detection circuit of the washing machine. This circuit receives the AC voltage frequency signal generated when the washing machine motor rotates, and generates pulse output accordingly, which is input to the single-chip microcomputer. When the amount of laundry in the washing machine is large, the rotation speed of the motor will decrease. Therefore, according to the number of pulses entering the microcontroller per unit time, the rotation speed of the motor can be calculated and the information about the amount of laundry in the washing machine can be obtained. Since the circuit belongs to the prior art, the method proposed by the present invention only utilizes the existing circuit, so the composition of the circuit will not be described in detail here.

[0051] because figure 1 The circuit shown can be used to detect the motor speed of the washing machine, therefore, this circuit can also be used to know the working cond...

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Abstract

The invention discloses a method for detecting a circuit fault of a washing machine motor, which includes: inputting a driving power to the motor for a period of time; stopping inputting the driving power to the motor, and detecting the number of pulses obtained from the clothes quantity detection circuit per unit time after the stop; judging Whether the pulse number per unit time is normal; if yes, the working state of the motor is normal; if not, the working state of the motor is abnormal. The invention also discloses a method for detecting the fault of the clothes quantity detection circuit, which includes: inputting a driving power to the motor for a period of time; detecting the pulse number obtained from the clothes quantity detection circuit per unit time; judging whether the pulse number per unit time is normal; if yes, the clothes quantity detection circuit is working normally; if not, the clothes quantity detection circuit is working abnormally. The invention solves the fault detection problem of the motor circuit of the washing machine and the clothes amount detection circuit without increasing the 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06F39/00G01R31/34
Inventor 姜德志许升张惠玉宋军徐忠朝
Owner HAIER GRP CORP
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