A method for autonomous charging of a lawn mower

Abstract

The invention discloses a method for autonomous charging of a lawn mower, which includes: walking to the range near the charging pile through a navigation and positioning system; collecting surrounding environment information to identify the location of the charging pile; analyzing the data collected by the laser radar Information, walk to the designated position facing the center of the charging pile; judge whether the lawn mower is facing the center of the charging pile, if not, you need to adjust the posture, and rotate on the spot with itself as the axis, so that you are facing the center of the charging pile. Charging pile: Lidar collects information around the charging pile from time to time when the lawn mower enters the charging pile, and judges whether the lawn mower is offset relative to the center of the charging pile. Fine-tune until the mower charging port is plugged into the charging post. The invention is not easy to be interfered by interference signals, has wide coverage, simple and convenient equipment arrangement, and can guide the mower to enter the charging pile accurately and quickly for charging.

Description

technical field [0001] The invention belongs to the field of robots, and in particular relates to a method for guiding a lawn mower to charge autonomously based on a laser radar. Background technique [0002] A smart lawnmower is a lawnmower that can replace people to cut grass autonomously. While undertaking the heavy and complex mowing tasks, it does not require too much control by humans, and can efficiently and perfectly complete the tasks assigned by humans independently, saving human and material resources, and greatly saving people's time. [0003] In the process of self-mowing, the lawn mower consumes a lot of electricity, and there is a shortage of electricity in the middle of the work. In order to achieve better autonomy, the lawnmower needs to automatically enter the charging pile without human assistance to achieve autonomous charging. Because the working range of the lawn mower is relatively wide, when the lawn mower is far away from the charging pile, it is d...

AI Technical Summary

Problems solved by technology

Among them, the flexibility of electronic fence guidance is poor. Different fences need to be laid out for different environments, and they are easily damaged and difficult to maintain. Most importantly, electronic fence guidance is easily affected by electromagnetic interference, and the corresponding accuracy requirements cannot be guaranteed.

The way of ultrasonic guidance is greatly disturbed by the outdoor environment, and the accuracy is difficult to guarantee when the external environment is complex

The method of machine vision requires the camera to continuously collect the surrounding environment images to judge the location of the charging pile. This method has high hardware costs and complex algorithms, and is not suitable for low-cost lawn mowers.

[0005] To sum up, the autonomous charging method of intelligent lawn mowers in the prior art mainly has the problems of poor flexibility, small coverage, great influence from the external environment, difficulty in ensuring accuracy, and high cost.

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