Sweeping robot obstacle avoiding and positioning system and method

Abstract

The invention discloses a sweeping robot obstacle avoiding and positioning system and method. Collision detection is composed of nine sections. A direction detecting assembly is a three-axis magnetoresistive sensor. The outer surfaces of all motors are covered with magnetic shielding assemblies. A distance detecting assembly comprises a multi-pole magnetic ring (16) and a Hall sensor (17). The outer wall of the multi-pole magnetic ring (16) is covered with a magnetic shielding layer (18). A semi-circular front cover of a sweeping robot is divided into the nine sections to carry out collision detection, and the collision position can be accurately and specifically recognized. Direction detection is achieved through the three-axis magnetoresistive sensor, the structure is simple, cost is low, the motors are tightly covered with the magnetic shielding assemblies, and the leakage flux interference of the motors is further reduced. Distance measuring is achieved through the cooperation of the Hall sensor and universal wheels, the structure is simple, cost is low, strict magnetic shielding is adopted, the leakage flux interference of the motors is effectively avoided, a magnetic field produced on the multi-pole magnetic ring can be restrained within the radial range of Hall sensor detection through the magnetic shielding layer of the multi-pole magnetic ring, and the distance measuring accuracy 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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