Tool Communication Adapter for Pre-Activation Filter Darkening

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Solution Overview

Problem

Existing communication systems between tools and personal protective devices often fail to ensure the protective filter is in a darkened state before the tool is activated, potentially exposing users to intense light sources like welding arcs.

Innovation Solution

A tool communication adapter that attaches between the tool and its power controller, providing a control unit to generate a command signal to move a protective filter to a closed position before tool activation, ensuring user safety by preventing tool operation until the filter is in place.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a communication system is implemented to ensure the protective filter is darkened before tool activation, then user safety is improved, but device complexity increases

Engineering Contradiction:
Improveuser safetyVSAvoidcommunication system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

A communication adapter is introduced as an intermediary device that couples between the tool and personal protective equipment (PPE). The adapter includes a control unit that receives signals from the tool and transmits commands to the PPE, enabling indirect communication without requiring direct integration between the tool and PPE systems. This resolves the contradiction by adding a dedicated mediation layer that ensures safety protocol execution while maintaining modular system architecture.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The communication system is segmented into distinct functional modules: the tool with its controller, the communication adapter with its control unit, and the PPE with its own control system. Each segment operates independently but communicates through standardized interfaces. This segmentation allows the safety function to be implemented without requiring complete system redesign, thus improving safety while limiting the increase in overall complexity.

Inventive Principle:
Principle #1Segmentation

2Reliability

If automatic filter positioning is implemented before tool activation, then protection reliability is improved, but ease of operation deteriorates

Engineering Contradiction:
Improveprotection reliabilityVSAvoidmanual intervention requirement
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The system automatically positions the protective filter to a closed position before the tool is activated by receiving a signal from the tool controller and transmitting a command to the PPE. This preliminary action ensures the filter is in the correct protective position before operation begins, improving reliability. The automation reduces the need for manual intervention, actually improving ease of operation despite the initial complexity addition.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The communication system establishes a feedback loop where the tool controller signals the adapter, which then commands the PPE to position the filter, and the system confirms when the filter reaches the closed position. This automated feedback mechanism ensures reliable filter positioning without requiring manual verification or adjustment, resolving the contradiction between reliability and ease of operation.

Inventive Principle:
Principle #23Feedback

3Manufacturing precision

If a communication adapter is added between the tool and power controller, then filter positioning control is improved, but device complexity increases

Engineering Contradiction:
Improvefilter positioning controlVSAvoidsystem component count
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The communication adapter is designed with multi-functionality, serving as both a physical coupling interface and a communication bridge between the tool and PPE. The adapter body provides mechanical attachment while the integrated control unit handles signal reception and command transmission. This universal design consolidates multiple functions into a single component, improving filter positioning control without proportionally increasing overall system complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentEP3193797B1Personal protective system tool communication adapter
Publication Date: 2022.05.25 3M INNOVATIVE PROPERTIES CO
  • EP3193797B1 patent drawingFigure 1A
  • EP3193797B1 patent drawingFigure 1B
  • EP3193797B1 patent drawingFigure 2A~2C

AI summary

A tool communication adapter system is provided. One exemplary system described herein includes a tool communication adapter having an adapter body including first and second mechanical attachment ends, a first electrical connector proximate the first mechanical attachment end and a second electrical connector proximate the second mechanical attachment end, a first supply channel having an opening extending through the body between the first and second mechanical attachment ends, and including a first supply channel connector at the first attachment end and a second supply channel connector at the second mechanical attachment end, and a control unit in communication with the first and second electrical connectors. The control unit is configured to provide a filter command signal to a protective filter in response to a signal received at the first electrical connector. An exemplary tool communication adapter thus allows communication between a tool and personal protective equipment.