Lidar-Guided Robotic Mower Mapping Without Manual Field Setup

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Solution Overview

Problem

Existing mowers require manual input for field detection and data transmission to build electronic maps, leading to low working efficiency and the need for re-measurement in different lawns, especially in new environments.

Innovation Solution

An intelligent mower equipped with a lidar scanning module, master control module, walking control module, and mowing control module that enables automatic scanning and map building without manual input, using a lidar scanning module for 360-degree rotation and data processing to create and update electronic maps, along with proximity detection and user interaction modules for real-time monitoring and path planning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If manual field detection and data transmission are used to build electronic maps, then the mower can operate in new environments, but the working efficiency is low and re-measurement is required for different lawns

Engineering Contradiction:

Improveworking efficiencyVSAvoidtime for field detection and map building

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The mower is equipped with a lidar scanning module that enables it to autonomously scan the lawn environment and automatically build electronic maps without requiring manual field detection. The system self-services by independently completing tasks that previously required human workers to physically measure and input data, thereby eliminating the need for re-measurement in different lawns and significantly improving working efficiency

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent replaces the manual mechanical process of field detection with an automated optical scanning system (lidar). The lidar scanning module uses laser beams to detect and map the lawn environment, substituting the mechanical approach of manual measurement and data entry with an automated optical-electronic system that rapidly captures spatial information and generates electronic maps

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Area of stationary object

If a lidar scanning module with constant-speed circumferential rotation is used, then 360-degree scanning coverage is achieved, but the device complexity increases

Engineering Contradiction:

Improvescanning coverage areaVSAvoidcomplexity of scanning system

Core Design Contradiction:

Area of stationary objectVSDevice complexity

Solution Approach 1:

The patent combines the constant-speed circumferential rotation unit with the laser transmitting and receiving unit into an integrated lidar scanning module. This merging of the rotation mechanism and laser sensing components allows the system to achieve 360-degree scanning coverage while managing device complexity through functional integration rather than separate independent systems

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The lidar scanning module serves multiple functions: it performs 360-degree environmental scanning, detects lawn boundaries and obstacles, builds electronic maps, and provides navigation data. This multi-functionality reduces the need for separate specialized components, thereby achieving comprehensive scanning coverage while controlling overall system complexity

Inventive Principle:

Principle #6Universality (Multi-functionality)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The intelligent mower achieves automatic scanning and map building, reducing manual effort and improving efficiency by allowing real-time monitoring and path planning, enabling autonomous operation and efficient lawn maintenance.

Implementation Method 1

a lidar scanning module arranged on the mower body, connected with the master control module and used for acquiring data and building an electronic map

Methodology Applied

Scientific EffectLIDAR: LIDAR

Implementation Method 2

the laser transmitting and receiving unit used for outputting a laser ranging signal and a laser intensity signal

Methodology Applied

Scientific EffectLaser: Laser

Implementation Method 3

a constant-speed circumferential rotation unit used for controlling a laser transmitting and receiving unit to rotate at constant speed

Methodology Applied

Scientific EffectCentrifugal force: Centrifugal Force

Data Source

PatentEP3613270B1Intelligent mower based on lidar map building

Publication Date: 2021.03.31 NINGBO DELIN MACHINERY

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AI summary

The present invention discloses an intelligent mower based on lidar map building, relates to a mower and solves the problem of low working efficiency caused by the requirements for manual re-measurement and parameter input implemented by working staff when different lawns are cut by using the mower, and the technical solution of the intelligent mower has the key points that the intelligent mower further comprises a master control module, a feature information module and a lidar scanning module; a lidar scanning module, a walking control module and a mowing control module; when a mower body is started, the master control module sends a starting signal and activates a constant-speed circumferential rotation unit and a laser transmitting and receiving unit to build an electronic map; and the master control module controls the walking control module to continuously walk and corrects the electronic map on different positions. According to the intelligent mower based on lidar map building, disclosed by the present invention, the mower body may realize automatic scanning without manual input and may automatically build and update the electronic map for cutting.