Obstacle avoidance and positioning method for sweeping robot

Abstract

The invention discloses a screen -sweeping robotic obstacle, positioning system and method. The collision detection consists of nine sections. The direction detection component is a three -axis magnetic resistance sensor. The outer surface of each motor is covered with magnetic shielding components.The distance detection component includes a multi -polar ring (16) and Hall sensor (17), and the multi -pole magnetic ring (16) is covered with a magnetic shielding layer (18) on the outer wall.The invention divides the semi -circular front cover of the floor -to -floor robot into nine sections for collision detection, which can accurately and specific identification of the collision position.The three -axis magnetic resistance sensor is used to achieve direction detection. The structure is simple and the cost is low, and the motor is tightly covered by magnetic shielding components, which further reduces the motor leakage interference.The Hall sensor is used with a universal wheel to achieve the ranging. The structure is simple and the cost is low. The strict magnetic shielding treatment is adopted to effectively avoid the motor leakage interference.The magnetic field constraint is within the radial range of the Hall sensor detection, and the accuracy of the ranging is high.

Description

technical field [0001] The invention relates to the field of intelligent cleaning robots, in particular to an obstacle avoidance and positioning system and method for a sweeping robot. Background technique [0002] With the continuous improvement of people's living standards, the application of smart home appliances is becoming more and more extensive, and has a very broad market prospect. Sweeping robot, also known as automatic cleaning machine, smart vacuum cleaner, robot vacuum cleaner, etc., is a kind of smart household appliances, which can automatically complete the floor cleaning work in the room by virtue of certain artificial intelligence. Generally, brushing and vacuuming are used to absorb the debris on the ground into its own garbage storage box, so as to complete the function of ground cleaning. Sweeping robots were first sold in European and American markets, and gradually entered the Chinese market with the improvement of domestic living standards. [0003] ...

AI Technical Summary

Problems solved by technology

[0011] A. Defects in the infrared detection method: the existing infrared detection of the front collision of the sweeping robot adopts a 3-stage (left, middle, right) infrared structure. Since the infrared emission and reception have strong directionality, therefore:

[0015] B. Defects of the front bumper collision device: due to the use of a whole piece of collision device, it can only identify whether the collision occurred on the left or right side, and cannot accurately and effectively provide the collision azimuth, and often misunderstands the obstacles directly in front. sentence

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