Autonomous Lawn Mower Design Application System

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Solution Overview

Problem

There is a lack of systems that allow users to request and manage the mowing of lawns with specific designs, such as images or letters, on large gardens, as existing autonomous travel work systems do not facilitate the application of designs to the garden surface during mowing.

Innovation Solution

An autonomous travel work system that includes an information terminal for inputting and transmitting design information, a computer for processing and managing the design, and an electric lawn mower that autonomously travels to implement the design on the lawn, allowing users to input the garden boundary, select or create designs, and schedule mowing operations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a design is applied to a large garden lawn, then the aesthetic value and customization of the lawn is improved, but the complexity of the mowing system and operation increases

Engineering Contradiction:
Improvedesign application capabilityVSAvoidsystem complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent introduces a computer as an intermediary between the information terminal and the lawn mower. The computer receives design information, generates corresponding mowing patterns, and transmits navigation instructions to the lawn mower. This intermediary processing layer simplifies the overall system by handling the complex design-to-path conversion centrally, rather than requiring direct integration between the terminal and mower systems.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The system is divided into distinct functional modules: an information terminal for design input, a computer for pattern generation and path planning, and an autonomous lawn mower for execution. This segmentation allows each component to specialize in specific tasks, reducing the complexity burden on any single device while enabling sophisticated design application capabilities.

Inventive Principle:
Principle #1Segmentation

2Ease of operation

If autonomous travel work system adds design allocation functionality, then the ease of operation for users is improved, but the device complexity increases

Engineering Contradiction:
Improveuser operation simplicityVSAvoidsystem structure complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The system enables users to easily input design requirements through a graphical interface on the information terminal, where they can visually select or draw patterns on a map of their lawn. The computer then automatically converts these simple user inputs into complex navigation paths without requiring users to understand the underlying complexity of path generation algorithms or system coordination.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The computer acts as an intelligent intermediary that translates simple user-friendly design specifications into detailed navigation instructions. Users interact with the system through intuitive graphical interfaces rather than directly programming mowing paths, significantly easing operation while the backend handles the computational complexity of converting designs into executable navigation sequences.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Manufacturing precision

If the system processes and manages design information, then the manufacturing precision of the design application is improved, but the loss of time for processing increases

Engineering Contradiction:
Improvedesign application precisionVSAvoidprocessing time
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The computer generates the complete mowing path and navigation instructions before the lawn mower begins execution. By performing preliminary path planning and processing all design conversions in advance, the system ensures precise design application while minimizing processing time during the actual mowing operation. The navigation instructions are prepared and ready for immediate execution.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system replaces manual trial-and-error design application with automated computer-based path generation. The computer algorithmically converts design specifications into precise navigation paths, ensuring consistent and accurate design application. This automated processing, while requiring computational time, eliminates the need for manual adjustment and rework, ultimately improving precision efficiency.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS9332691B2Autonomous travel work system
Publication Date: 2016.05.10 YANMAR POWER TECH CO LTD
  • US9332691B2 patent drawing
  • US9332691B2 patent drawing
  • US9332691B2 patent drawing

AI summary

An autonomous travel work system works, regarding a garden LD as a canvas and applying an arbitrary design to the garden LD, according the design. The autonomous travel work system includes an information terminal configured to be input means and transmit input information, a computer configured to receive the input information, and at least one electric lawn mower configured to work autonomously traveling in the garden LD. The information terminal includes a display, a work ground input, a design allocation input, and a work request device. The information terminal or the computer includes a work ground designation device, a design allocation device, a mapping route generator, and a work pattern generator.