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2013 | Book

Ultrasonic Fluid Quantity Measurement in Dynamic Vehicular Applications

A Support Vector Machine Approach

Authors: Jenny Terzic, Edin Terzic, Romesh Nagarajah, Muhammad Alamgir

Publisher: Springer International Publishing

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About this book

Accurate fluid level measurement in dynamic environments can be assessed using a Support Vector Machine (SVM) approach. SVM is a supervised learning model that analyzes and recognizes patterns. It is a signal classification technique which has far greater accuracy than conventional signal averaging methods.

Ultrasonic Fluid Quantity Measurement in Dynamic Vehicular Applications: A Support Vector Machine Approach describes the research and development of a fluid level measurement system for dynamic environments. The measurement system is based on a single ultrasonic sensor. A Support Vector Machines (SVM) based signal characterization and processing system has been developed to compensate for the effects of slosh and temperature variation in fluid level measurement systems used in dynamic environments including automotive applications. It has been demonstrated that a simple ν-SVM model with Radial Basis Function (RBF) Kernel with the inclusion of a Moving Median filter could be used to achieve the high levels of accuracy required for fluid level measurement in dynamic environments.

Aimed toward graduate and postgraduate students, researchers, and engineers studying applications of artificial intelligence, readers will learn about a measurement system that is based on a single ultrasonic sensor which can achieve the high levels of accuracy required for fluid level measurement in dynamic environments.

Table of Contents

Frontmatter
Chapter 1. Introduction
Abstract
This book documents a research program undertaken to design and develop an ultrasonic sensor-based fluid level measurement system for dynamic environments, in particular automotive applications. This research is a subset of an overall research program titled “Smart Sensor for Fluid Level Measurement in Hazardous and Dynamic Environments.” The research work presented herein is based on the use of an ultrasonic sensors coupled with a support vector machines-based signal processing system for accurately determining the fluid level in dynamic environments. The objective of this research project is to design and develop a fluid level measurement system based on a nonmechanical and contactless sensor to accurately determine the level of fluid in a dynamic environment, especially in vehicular fuel tanks. The motivation for this research is the automotive industry’s requirement for a robust and accurate fuel level measurement system that would function reliably in the presence of slosh, and temperature variations.
Jenny Terzic, Edin Terzic, Romesh Nagarajah, Muhammad Alamgir
Chapter 2. Ultrasonic Sensing Technology
Abstract
This chapter describes the basic properties of ultrasonic technologies and their associated use in various ranges of sensors in industrial applications. Physical properties as well as the limitations of the piezoelectric devices used in ultrasonic sensors are described here. Particularly, the usage of ultrasonic sensors in fluid level measurement systems is discussed. Various configurations of ultrasonic sensors used with hazardous fluids, particularly gasoline-based fuels, in the application of level measurement have also been described in this section. In summary, this chapter provides the detailed background to ultrasonic type sensors and their application in dynamic environments.
Jenny Terzic, Edin Terzic, Romesh Nagarajah, Muhammad Alamgir
Chapter 3. Ultrasonic Sensor Based Fluid Level Sensing Using Support Vector Machines
Abstract
The characteristics, principles, and applications of ultrasonic type sensors, including some issues of the ultrasonic type level sensing applications in dynamic environments, were discussed in Chap. 2. In this chapter, first, the fundamental principles of signal classification and processing are discussed. Then the background and application of Support Vector Machines (SVM) in the context of this research are described. Finally, the use of SVM in providing solutions to the problems encountered in fluid-level measurement in dynamic environments is described.
Jenny Terzic, Edin Terzic, Romesh Nagarajah, Muhammad Alamgir
Chapter 4. Methodology and Experimental Program
Abstract
This chapter discusses the characteristics of the ultrasonic sensor signal obtained from a fuel level sensor under dynamic conditions and describes a methodology to be used to develop a fluid level measurement system that compensates for the effects of a dynamic environment. This involves using an intelligent signal classification approach based on support vector machines. This chapter also describes the signal filtration functions that will be implemented to enhance the performance of the SVM-based signal classification system.
Jenny Terzic, Edin Terzic, Romesh Nagarajah, Muhammad Alamgir
Chapter 5. Experimentation
Abstract
The implementation of the Support Vector Machine (SVM)-based ultrasonic signal classification system requires training samples of the system with actual data under various dynamic conditions. A detailed discussion of the experimental setup used for the research is provided in this section. There are three major experiments performed in this research. All experiments are carried out using a regular standard automobile fuel tank. The first experiment determines the influence of temperature, contamination, and sloshing factors. The second experiment determines the suitability and performance of different SVM kernel functions. Finally, extensive experimentation is carried out at a variety of different fuel levels in the tank. The data obtained from the third experiment will be used to train the SVM model having the Radial Basis Function (RBF), a widely used kernel function, while also applying the various signal filtration methods, namely, moving mean, moving median, and wavelet filters.
Jenny Terzic, Edin Terzic, Romesh Nagarajah, Muhammad Alamgir
Chapter 6. Results
Abstract
This chapter provides the results obtained from the three sets of experiments described in Chap. 5. The results showing the response of the ultrasonic sensor in a dynamic environment without using the SVM-based signal processing system are provided in Sect. 6.2. The ultrasonic sensor signals, the training samples, and validation results for Experiment Sets B and C are given in Sects. 6.3 and 6.4, respectively.
Jenny Terzic, Edin Terzic, Romesh Nagarajah, Muhammad Alamgir
Chapter 7. Discussion
Abstract
This chapter provides discussion on the selection and design of the SVM-based signal processing system. The selection parameters used for the SVM-based system and the results obtained from the experimentations, and the possible improvements to the design of the SVM-based system are all discussed in this section.
Jenny Terzic, Edin Terzic, Romesh Nagarajah, Muhammad Alamgir
Chapter 8. Conclusion and Future Work
Abstract
The support vector machine (SVM)-based signal processing and classification approach coupled with a single ultrasonic sensor have been used to accurately determine the fuel level in an automotive fuel tank under dynamic conditions. A thorough research review was conducted on the usage of ultrasonic sensors in dynamic environments and the effective use and properties of the support vector machines. Based on the findings of the research review, an ultrasonic sensor-based measurement system using the support vector machine (SVM)-based signal processing and classification was proposed to provide a robust and accurate fuel level measurement system in a dynamic environment.
Jenny Terzic, Edin Terzic, Romesh Nagarajah, Muhammad Alamgir
Backmatter
Metadata
Title
Ultrasonic Fluid Quantity Measurement in Dynamic Vehicular Applications
Authors
Jenny Terzic
Edin Terzic
Romesh Nagarajah
Muhammad Alamgir
Copyright Year
2013
Publisher
Springer International Publishing
Electronic ISBN
978-3-319-00633-8
Print ISBN
978-3-319-00632-1
DOI
https://doi.org/10.1007/978-3-319-00633-8

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