Method for detecting liquid level of detergent box and clothes processing equipment having the same

Abstract

The invention provides a liquid level detection system for a detergent box, which includes a detergent box, a laser emitting device, a photosensitive device and an imaging panel; wherein, the laser emitting device is arranged on the inner wall of the detergent box to emit laser light to the detergent box The liquid surface in the interior; the photosensitive device is arranged on the opposite side wall of the detergent box corresponding to the installation surface of the laser emitting device to receive the laser signal emitted by the laser emitting device; the imaging panel is arranged on one or more of the detergent box wall The position receives the laser signal emitted by the laser emitting device; the laser emitted by the laser emitting device is reflected on the liquid surface and emits the laser signal to the photosensitive device and / or the imaging panel; through the photosensitive device and / or the imaging panel receives The laser signal reflected by the liquid surface of different liquid levels is used to obtain the actual liquid level in the detergent box through the detection signal of the photosensitive device and / or the imaging of the imaging panel.

Description

technical field [0001] The present invention relates to the technical field of clothing processing equipment, in particular, to a liquid level detection method and a clothing processing equipment having the same. Background technique [0002] Clothes processing equipment is a necessity of modern family life, and the remaining amount of detergent determines whether the user performs laundry operations or replenishes detergent. There are many kinds of liquid level detection methods for clothes processing equipment. The traditional ones are float type, probe type, etc., which rely on mechanical movement for detection. Such detection methods may have measurement errors and other phenomena. In order to perform liquid level detection more accurately and quickly, thereby improving user experience, sensors are also used for liquid level detection. [0003] Comparative document CN 109115305B records the emission time of light by the light emission module and the reception time of li...

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Problems solved by technology

[0003] Comparative document CN 109115305B records the emission time of light by the light emission module and the reception time of light by the light receiving module, and calculates the liquid level according to the principle of light reflection and the time difference of light transmission at different liquid levels due to the principle of light reflection, but this technical solution only Can support the same detergent or other liquids regardless of brand

Washing liquid and other liquids with different reflectivity will cause errors in the test data of the invention. In the detergent box, the accuracy of the receiving module is required to calculate the time difference of light transmission, which increases the cost of the equipment.

[0004] For how to optimize the method of detergent liquid level detection, no effective solution has been proposed so far

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