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Water level frequency self-calibration method of washing machine and washing machine

A technology of water level frequency and washing machine, which is applied to the control device of washing machine, other washing machines, washing devices, etc., and can solve the problems of increasing the cost of washing machine

Pending Publication Date: 2021-07-06
QINGDAO HAIER WASHING MASCH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Although the above-mentioned patent solves the problem of water level frequency value calibration, it adds other parts (second water level sensor), which increases the cost of the washing machine

Method used

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  • Water level frequency self-calibration method of washing machine and washing machine

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Embodiment Construction

[0049] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention , but not to limit the scope of the present invention.

[0050] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, ...

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Abstract

The invention discloses a water level frequency self-calibration method of a washing machine. The washing machine comprises a control system, and a drainage pump and a water level sensor electrically connected with the control system respectively. The method comprises the following steps: a, the control system controls the drainage pump to start working; b, the control system obtains a water level frequency value F measured by a water level sensor; and c, the control system calibrates a reference water level frequency value F0 according to the obtained water level frequency value F. According to the water level frequency self-calibration method, an error between a set water feeding quantity and an actual water feeding quantity can be eliminated without additionally adding other devices, and thus the water feeding quantity of the washing machine can be controlled more accurately.

Description

technical field [0001] The invention belongs to the technical field of household appliances, and in particular relates to a control method of a washing machine. Background technique [0002] The water level detection of present full-automatic washing machine is to judge according to the air pressure in the water pressure air pipe that links to each other with washing tub inner cylinder. The higher the water level, the greater the water pressure, resulting in a larger inductance L of the inductance coil in the sensor, and then according to the parallel resonance frequency formula of inductance L and capacitance C: F=1 / (2π*√LC) It is concluded that the higher the water level, the smaller the resonance frequency, and vice versa, the lower the water level, the higher the frequency. Then the generated resonant frequency F is processed by the single-chip microcomputer to determine the level of the water level. The higher the frequency, the lower the water level. [0003] The cur...

Claims

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Application Information

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IPC IPC(8): D06F33/34D06F39/08
CPCD06F39/087Y02B40/00
Inventor 梁青逯迎丁焕琪高秋英史海兵
Owner QINGDAO HAIER WASHING MASCH CO LTD