Force Measuring Device Mobility Sensor Monitoring

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Solution Overview

Problem

Existing force measuring devices, such as weighing devices, face challenges in maintaining measurement accuracy due to force shunts caused by restricted mobility and environmental factors like dust and improper installation, which are difficult to detect manually, especially under challenging conditions.

Innovation Solution

A method and device that utilize a mobility sensor to monitor the free mobility of the force transmission system, comparing detected parameters with threshold values to trigger actions and alert users to potential restrictions, thereby reducing manual checks and improving accuracy and stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If manual inspection methods are used to detect force shunts and mobility restrictions, then device complexity remains low, but measurement precision and reliability deteriorate due to undetected issues

Engineering Contradiction:

Improvemeasurement accuracyVSAvoiddevice complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent replaces manual mechanical inspection with an automated sensor-based detection system. A sensor is integrated into the force transmission system to automatically detect mobility restrictions and force shunts, eliminating the need for manual checking while improving measurement accuracy and reliability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent implements a feedback mechanism where the sensor continuously monitors the force transmission system and provides real-time information about mobility restrictions. This feedback enables automatic detection and alerting, improving measurement precision without requiring complex manual inspection procedures.

Inventive Principle:

Principle #23Feedback

2Reliability

If automated sensor monitoring is implemented to detect force shunts, then reliability improves, but device complexity increases

Engineering Contradiction:

ImprovereliabilityVSAvoiddevice complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces manual inspection with an automated sensor-based detection system. A sensor is integrated into the force transmission system to automatically detect mobility restrictions and force shunts, eliminating the need for manual checking while improving measurement accuracy and reliability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent implements a self-monitoring capability where the force transmission system automatically detects its own mobility restrictions and force shunts through integrated sensors. This self-service approach improves reliability by continuously monitoring without requiring external manual inspection.

Inventive Principle:

Principle #25Self-service

3Difficulty of detecting and measuring

If mobility sensors are integrated into the force transmission system, then detection capability improves, but manufacturing complexity increases

Engineering Contradiction:

Improvedetection capabilityVSAvoidmanufacturing complexity

Core Design Contradiction:

Difficulty of detecting and measuringVSEase of manufacture

Solution Approach 1:

The patent segments the force transmission system into modular components, with the sensor integrated into a specific section of the force transmission. This modular approach enables independent manufacturing and assembly of the sensor unit, reducing overall manufacturing complexity while maintaining high detection capability.

Inventive Principle:

Principle #1Segmentation

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 solution effectively detects and alerts users to potential force shunts and wear issues, enhancing measurement accuracy and maintenance efficiency while reducing costs by automating the monitoring process.

Implementation Method 1

The mobility sensor (50) is designed to detect movements of the force transmission (40), in particular in a direction orthogonal to the direction of the force flow

Methodology Applied

Scientific EffectAcceleration measurement: Accelerometer

Data Source

PatentEP2329236B1Method for monitoring the status of a power measuring device, power measuring device and power measuring module

Publication Date: 2019.09.18 METTLER TOLEDO GMBH

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AI summary

The invention relates to a method and an apparatus, which is suitable for said method, for monitoring the state of a force-measuring apparatus, in particular a weighing apparatus, having a moving force-transmission means which conducts a force acting on the force-measuring apparatus to a measurement transformer which generates a measuring signal which corresponds to the active force, said measurement signal then being displayed or forwarded for further processing. In this case, at least one parameter which characterizes the movement of the force-transmission means or the change in said force transmission means with respect to time is determined, the parameter is then compared with at least one threshold value and an action of the force-measuring apparatus is triggered as a function of said comparison.