Robot Interference Threshold Setting for Tighter Collision Margins

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Solution Overview

Problem

Existing interference check methods in robot systems set thresholds for potential collisions based on summed distances, leading to unnecessarily large safety margins, which can hinder efficient operation and increase setup time.

Innovation Solution

An information processing method and apparatus that allows for individual and general threshold settings for components, using a greater value between set thresholds for interference confirmation, optimizing distance settings to minimize interference risks while enhancing operational efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a predetermined threshold is set for interference confirmation between components, then interference risks can be managed, but unnecessarily large safety margins are created which hinders operational efficiency

Engineering Contradiction:
Improveinterference risk managementVSAvoidoperational efficiency
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The patent divides the interference confirmation process into two distinct threshold settings: a predetermined threshold for general interference confirmation and individual thresholds for each component. This segmentation allows the system to use the predetermined threshold for most checks while applying individual thresholds only when needed, thereby reducing unnecessary safety margins and improving operational efficiency without compromising interference risk management

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent implements local quality by allowing individual threshold settings for specific components that require special attention, while using a general predetermined threshold for all other components. This means that only the necessary portions of the system have enhanced safety margins, while the rest operates with tighter, more efficient thresholds, resolving the contradiction between reliability and productivity

Inventive Principle:
Principle #3Local quality

2Measurement precision

If individual thresholds are set for each component, then interference checks become more precise, but setup time and complexity increase

Engineering Contradiction:
Improveinterference check precisionVSAvoidsetup time
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The patent implements a dynamic threshold selection mechanism where the system automatically determines whether to use the predetermined threshold or individual component thresholds based on the specific interference confirmation context. This dynamic approach eliminates the need for manual configuration of individual thresholds for every component, thereby maintaining high measurement precision while significantly reducing setup time and complexity

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system performs self-service by automatically selecting appropriate thresholds for interference confirmation without requiring extensive manual input. The predetermined threshold serves as a default that the system uses unless individual thresholds are specifically defined, allowing the system to maintain precision where needed while minimizing setup effort through automated decision-making

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS12600035B2Information processing method, information processing apparatus, robot system, manufacturing method of product, and storage medium
Publication Date: 2026.04.14 CANON KK
  • US12600035B2 patent drawing
  • US12600035B2 patent drawing
  • US12600035B2 patent drawing

AI summary

An information processing method includes in performing an interference confirmation between at least two components, executing an individual threshold setting processing of setting a threshold individually for at least one of the components for the interference confirmation, and executing an interference confirmation processing of performing the interference confirmation by setting a predetermined threshold to be used for the interference confirmation based on thresholds set for the components and a predetermined condition.