Adhesive Valve Stroke Detection Using Hall Sensors

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Solution Overview

Problem

Conventional adhesive valve systems in high-production manufacturing lines face challenges with wear and performance inconsistencies due to harsh operating conditions, lacking effective monitoring capabilities for valve status, requiring complex and additional components, and lacking data collection and troubleshooting features.

Innovation Solution

A valve module stroke detection system using a reciprocating valve pin with a magnet and Hall effect sensor outside the adhesive flow path to monitor valve module performance, providing real-time data analysis and troubleshooting capabilities with minimal additional components.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If conventional monitoring schemes are implemented to detect valve performance, then measurement precision is improved, but device complexity increases due to significant additional components

Engineering Contradiction:
Improvevalve performance monitoringVSAvoidsystem components
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent replaces complex mechanical monitoring systems with magnetic field-based sensing. A magnet is attached to the valve pin, and a Hall effect sensor detects its position through non-contact means, eliminating the need for complex mechanical linkages and reducing system complexity while maintaining measurement precision

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

Solution Approach 2:

The patent introduces a magnet as an intermediary element that enables non-contact position detection. The magnet attached to the valve pin interacts with the Hall effect sensor to provide positional information without requiring direct mechanical contact or complex transmission mechanisms

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If comprehensive monitoring capabilities are added to detect valve status and collect data, then reliability is improved, but device complexity increases

Engineering Contradiction:
Improvevalve operation assuranceVSAvoidmonitoring system
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The Hall effect sensor system serves multiple functions: it detects valve pin position, determines valve status (open/closed), provides data for troubleshooting, and enables predictive maintenance. This multi-functionality achieves comprehensive monitoring reliability without proportionally increasing system complexity

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

Solution Approach 2:

The system continuously monitors valve pin position through the Hall effect sensor and provides real-time feedback on valve status. This feedback mechanism enables ongoing reliability assurance by detecting deviations from expected operation and triggering appropriate responses

Inventive Principle:
Principle #23Feedback

3Loss of information

If multiple sensors and components are added to provide troubleshooting and predictive maintenance capabilities, then loss of information is reduced, but device complexity increases

Engineering Contradiction:
Improveoperational dataVSAvoiddata collection system
Core Design Contradiction:
Loss of informationVSDevice complexity

Solution Approach 1:

The system continuously collects and stores operational data from the Hall effect sensor before failures occur. By maintaining a historical record of valve pin position and timing information, the system prepares troubleshooting and predictive maintenance capabilities in advance, reducing information loss without requiring complex data acquisition systems at the moment of need

Inventive Principle:
Principle #10Preliminary action

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 system offers precise monitoring and data analysis of valve module status, enabling real-time troubleshooting, predictive maintenance, and cost-effective operation by using Hall effect sensors to track valve pin movement and generate trend data for multiple modules.

Implementation Method 1

A valve module stroke detection system uses a reciprocating valve pin with a magnet and Hall effect sensor outside the adhesive flow path to monitor valve module performance

Methodology Applied
Scientific EffectHall effect: Hall Effect

Data Source

PatentEP3713681B1Method for monitoring the performance of a valve module in an adhesive dispenser system
Publication Date: 2026.01.21 ILLINOIS TOOL WORKS INC
  • EP3713681B1 patent drawingFigure 1~2
  • EP3713681B1 patent drawingFigure 3
  • EP3713681B1 patent drawingFigure 4

AI summary

A valve module stroke detection system includes an adhesive valve module having a reciprocating valve pin. The pin reciprocates in a first direction by application of a compressed gas on one side of a piston and reciprocates in a second opposite direction. The reciprocating pin has a portion in an adhesive flowpath. A sensed element is positioned on the valve pin outside of the adhesive flow path. A sensor is positioned outside of the adhesive flow path. The sensor cooperates with the sensed element and generates a movement signal upon sensing a movement of the valve pin and generates a timing signal upon of the movement of the valve pin. A processor processes the movement signal and the timing signal and a recording medium records the movement signal and the timing signal.