Method for judging pollution of dust sensor, wiping system and cleaning robot thereof

Abstract

The invention provides a method for judging the pollution of a dust sensor, a wiping system and a cleaning robot thereof. The dust sensor comprises a pair of optical signal elements, wherein the pair of optical signal elements are arranged at both sides of a dust passage and respectively used for transmitting and receiving optical signals; and one sides of the optical signal elements, which are close to the dust passage, are respectively provided with a transparent plate used for keeping dust out and protecting the dust sensor. The method for judging the pollution of the dust sensor comprises the following steps of: carrying out analog / digital conversion on a real signal received by the dust sensor, and then solving an arithmetic mean value; and when the obtained arithmetic mean value is less than a certain preset value, judging that the transparent plates of the dust sensor need to be wiped. Thus the pollution degree of the transparent plates of the dust sensor is judged in real time, a wiping mechanism of the wiping system of the dust sensor is automatically started in time to wipe the transparent plates, therefore the accurate judgment of the dust sensor on dust quantity is effectively ensured, and the intelligent cleaning robot can normally work all the time.

Description

technical field [0001] The invention relates to a method for judging the pollution degree of a light-transmitting plate of a dust sensor, a self-induction wiping system of a dust sensor applying the method for judging the pollution degree, and especially an intelligent cleaning robot with the self-induction wiping system. Background technique [0002] Among the existing intelligent cleaning robot products and related technologies, most intelligent cleaning robots cannot autonomously perceive the dust in the cleaning area. As described in US patent US2003025472, when there is a small area in the cleaning area that needs to be cleaned, the user needs to place the cleaning robot in the approximate center of the small area, and select the fixed-point cleaning mode for the robot. Clean under the set conditions. Although this method can solve the needs of key cleaning in small areas, it requires human intervention assistance, and the intelligent effect of the robot is not very pe...

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Problems solved by technology

[0004] However, since the robot itself is a cleaning device, and its job is to clean dust, it is inevitable that more or less dust will stick to the light-transmitting plate of the dust sensor. When the dust accumulated on the light-transmitting plate of the dust sensor When a certain amount is reached, the infrared induction between the above-mentioned two optical signal elements will be affected, and the infrared signal will become very weak. At this time, no matter what working environment the robot is in, it will mistakenly think that the cleaning area is dirty, so it will always be in the cleaning area. The area is being cleaned

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