Analyzing Time Delays in Electrical Circuits via Temperature Profiles

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Solution Overview

Problem

Existing methods for analyzing the effects of environmental influences on electrical circuits fail to accurately account for time delays caused by heat flows, leading to an indirect relationship between temperature and component behavior, making it difficult to analyze the impact of external parameters like temperature and pressure.

Innovation Solution

A method and device that measure the time profiles of both a characteristic parameter of the electrical circuit and the external influence, such as temperature, and display them in a two-dimensional diagram, allowing for easy visualization of displacement effects and indirect influences, using local sensors for precise temperature measurements and graphical or numerical representations to highlight these relationships.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a direct relationship is shown between characteristic parameter and temperature, then the analysis is simple, but the time delay caused by heat flow cannot be detected

Engineering Contradiction:
Improveease of analysisVSAvoiddetection of time delay
Core Design Contradiction:
Ease of operationVSMeasurement precision

Solution Approach 1:

The patent transitions from a direct two-dimensional plot of parameter versus temperature to a time-based analysis approach. By plotting the characteristic parameter against time and simultaneously displaying the temperature profile against time, the solution adds a temporal dimension that reveals the causal relationship and time delay between temperature changes and component response, resolving the contradiction between simple analysis and accurate detection.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Measurement precision

If the electrical circuit is placed in a test room with controlled external influences, then the measurement accuracy is improved, but the device complexity increases

Engineering Contradiction:
Improvemeasurement accuracyVSAvoidtest room setup
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent introduces a test room as an intermediary system that controls and isolates external environmental influences. This mediator allows precise measurement of the electrical circuit's response to controlled temperature and pressure conditions, achieving measurement accuracy while containing the complexity within a dedicated testing environment rather than requiring complex analysis to compensate for uncontrolled variables.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Measurement precision

If local sensors are used to measure temperature at specific locations, then the measurement precision is improved, but the device complexity increases

Engineering Contradiction:
Improvelocal temperature measurementVSAvoidsensor arrangement
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent applies local quality by placing temperature sensors at specific locations within the test room and on the electrical circuit components. This localized measurement approach enables precise detection of temperature gradients and heat flow patterns, improving measurement precision while the structured placement of sensors manages the complexity through targeted rather than comprehensive coverage.

Inventive Principle:
Principle #3Local quality

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

This approach enables a direct and clear analysis of the relationship between environmental influences and electrical circuit behavior over time, facilitating the identification of displacement effects and indirect influences, thereby improving the understanding of component behavior under varying conditions.

Implementation Method 1

a first sensor for detecting a measured value of the first parameter

Methodology Applied
Scientific EffectTemperature measurement:

Implementation Method 2

a second sensor for detecting a second parameter characterizing an external influence

Methodology Applied
Scientific EffectTemperature measurement:

Implementation Method 3

As a result of heat flows within components, for example, the reaction of a component of the electrical circuit only occurs with a time delay in relation to the temperature profile of the environment

Methodology Applied
Scientific EffectHeat flow: Conduction (thermal)

Data Source

PatentEP1890166B1Method for analysing the effects of exterior influences on electric switches and analytic device
Publication Date: 2010.07.07 ROHDE & SCHWARZ GMBH & CO KG
  • EP1890166B1 patent drawingFigure 1
  • EP1890166B1 patent drawingFigure 2
  • EP1890166B1 patent drawingFigure 3

AI summary

Method for impact analysis of external effects on electrical circuits, involves regulating electrical circuit in testing room and generating selected effect, where temporal method of one parameter, involves measuring one value : The method involves regulating an electrical circuit in a testing room and generating a selected effect. A temporal method of one parameter, involves measuring one value from multiple points of time for performance of the electrical circuit. The temporal method of another parameter, involves measuring another value from multiple points of time for an external effect. The temporal method of the former parameter in a two dimensional diagram, is released, where a temporal method is applied as a time function. A diagram background (22), is determined by the later parameter.