Auxiliary Device Pairing Memory Deletion for Tool Link Setup

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Solution Overview

Problem

Existing communication systems in construction environments struggle to ensure that auxiliary devices connect reliably and efficiently with the intended main tool device, often leading to unintended connections due to lack of memory-based pairing and manual intervention requirements.

Innovation Solution

A method involving the deletion of a pairing memory in main tool devices triggered by an auxiliary device, using a whitelist mechanism to ensure only desired connections are maintained, allowing for automated reconnection without manual intervention.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If an auxiliary device is configured to interact with several main tool devices, then the auxiliary device can work with multiple tools throughout its service life, but the auxiliary device cannot reliably identify which main tool it should connect to when multiple tools are within range

Engineering Contradiction:
Improveauxiliary device compatibilityVSAvoidconnection reliability
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The patent implements preliminary pairing actions where the auxiliary device stores identification data of main tool devices during an initial pairing phase. This pre-established memory enables the auxiliary device to later identify and connect to the correct main tool without confusion, even when multiple tools are available. The pairing memory is populated in advance with authorized tool identifiers, solving the reliability issue while maintaining versatility.

Inventive Principle:
Principle #10Preliminary action

2Speed

If the fastest connection is established automatically, then connection speed is maximized, but the connection may be to the wrong main tool rather than the intended one

Engineering Contradiction:
Improveconnection speedVSAvoidconnection accuracy
Core Design Contradiction:
SpeedVSReliability

Solution Approach 1:

The patent implements a feedback mechanism where the auxiliary device checks its pairing memory against available main tools before establishing a connection. Instead of simply connecting to the fastest signal, the device uses feedback from its stored pairing information to verify and select the correct main tool. This ensures both speed and accuracy by combining fast scanning with intelligent selection based on pre-stored pairing data.

Inventive Principle:
Principle #23Feedback

3Reliability

If manual search and deactivation of wireless links is required, then non-targeted communication can be prevented, but significant time and manpower are consumed

Engineering Contradiction:
Improvecommunication securityVSAvoidsetup time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent implements self-service functionality where the auxiliary device automatically manages its connections based on stored pairing information. The device independently identifies and connects to the correct main tool without requiring manual intervention to search for or deactivate other links. This automation maintains communication security through reliable targeted connections while eliminating the time-consuming manual setup process.

Inventive Principle:
Principle #25Self-service

Data Source

PatentEP3967064B1Method for establishing a communication link between selected components of a system for carrying out work by means of tools and auxiliary devices
Publication Date: 2026.04.22 HILTI AG
  • EP3967064B1 patent drawingFigure 1

AI summary

The present invention relates to a method for setting up a communication connection between selected components of a system for performing work by means of tool and auxiliary devices, wherein the connection setup is rendered possible between the "correct" communication partners by erasing a pairing memory on a main tool device, this erasing of the pairing memory being initiated by actions of an auxiliary device of a work and communication system. The auxiliary device and a selected main tool device are the "selected" communication partners for the purposes of the invention.