The project shall contribute to the further development of a prototypical implementation for an assistance solution supporting measurement uncertainty analysis within the existing framework. The main tasks in this project will be:
Familiarisation with the topic of measurement uncertainty analysis and the handling of software GUM Workbench®, definition of an design outline for the user support during measurement uncertainty analysis, including an analysis of required supporting function and the subsequent definition of a possible system structure, selection of one aspect in the process and development of a draft for an adequate support solution, containing elements to enable partial automation or increase of efficiency for the process step as well as explanatory information for the users, prototypical implementation and testing of the defined elements within the outlined framework.
In the "Guide to the Expression of Uncertainty in Measurement" (GUM), jointly issued by ISO and BIPM, a standard procedure for the determination of measurement uncertainty is defined. Yet, although this document is supported by many international organisations and the consideration of measurement uncertainty is of high importance in many fields of application, ranging from industrial quality control to scientific research, still often the determination of measurement uncertainty is omitted.
This is mainly due to difficulties of the metrologists to apply the general rules of the GUM to the task at hand. To ease this task and support the determination of measurement uncertainty, the software GUM Workbench® performs all required mathematical evaluations based on a model of the measurement. Additionally, a concept for an assistance system as well as a graphic modelling editor has been developed to facilitate the definition of a suitable model.
But, the existing concepts are not yet fit for practical testing under industrial conditions.
IV TABLE OF CONTENTS
I ABSTRACT
II ACKNOWLEDGEMENTS
III DEDICATION
IV TABLE OF CONTENTS
V LIST OF FIGURES
VII LIST OF TABLES AND DESIGNS
CHAPTER 1
1. INTRODUCTION TO UNCERTAINTY MEASUREMENT
1.1 The Definition of Uncertainty Measurement
1.1.1 The Explanation of the Definition
1.1.2 Specification of Measurand
1.1.3 Error, Precision and Uncertainty
1.2 Sources of Uncertainty
1.3 Estimation of Uncertainties
1.3.1 Model the Process
1.3.2 ‘Type A’ Evaluation of Standard Uncertainty
1.3.3 ‘Type B’ Evaluation of Standard Uncertainty
CHAPTER 2
2. GUM WORKBENCH®
2.1 The Software
2.2 Uncertainty Analysis Steps
CHAPTER 3
3. EVALUATION OF THE UNCERTAINTY USING THE GUM WORKBENCH SOFTWARE
3.1 Project
Calibration and Measurement Uncertainty of a Power Sensor at a Frequency of 19 GHz Using the Gum Workbench Software
3.1.1 Introduction
3.1.2 The Model Equation and the Input Quantities
3.1.3 Results
3.1.4 Uncertainty budget (Kx)
3.1.5 Discussion
3.2 Project
Calibration And Measurement Uncertainty Of Radio Frequency Field Strength Meters Using Broad-Band E Or H-Field Sensor in the Frequency Range up to 18GHz
3.2.1 Introduction
3.2.2 The Evaluation of Uncertainty and Results using GUM
3.2.3 Discussion
CHAPTER 4
4. DEVELOPMENT OF A SUPPORT USER GUIDE DESIGN FOR MEASUREMENT UNCERTAINTY ANALYSIS
4.1 Introduction
4.1.1 The Need of an Assistance System for the Evaluation of the Uncertainty
4.2 General User Guide Procedures
4.2.1 Understanding the Main Experiment
4.2.2 The Measurement Setup
4.2.3 Evaluation of the Uncertainty
4.2.4 Stating Results
4.3 Design Outline for the User Support
4.3.1 Design Outline for First Step
4.3.2 Design Outline for Second Step
4.3.3 Design Outline for Third Step
4.3.4 Design Outline for Fourth Step
4.4 Design Outline for Finding the Model Equation
CHAPTER 5
5. IMPLEMENTATION OF THE USER GUIDE DESIGN AND OTHER SUGGESTED IDEAS
5.1 Introduction
5.1.1 Ways of Implementation and Suggested Ideas
5.2 User Guide Design
6. CONCLUSION
7. REFERENCES
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