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Embedded Measurement Systems

Abstract
The subject of Embedded Measurement Systems (EMS) is the merging of embedded systems and electrical measurement systems. This indicates that EMSs are hardware-software systems dedicated to measuring one or a few physical quantities. Applications are numerous; EMSs measure the temperature in refrigerators, freezers, irons, ovens and automobile combustion engines, they sense vibrations in tilt alarms and game consoles, they measure airflow in engines and ventilation systems, they measure shock impact in crash detectors and are used as shock and temperature loggers for transport goods, they measure air pressure in airplane cabins, humidity in air-conditioned environments, they measure liquid levels in fuel tanks, they detect smoke in fire alarms, they measure the viscosity of lubricant oil in engines, they measure the rotation speed of spinning wheels (in any engine), they measure torque in engines and are used as heart rate and ECG detectors in medicine etc. The commercial demand for ever cheaper products and worldwide environmental legislations force vendors to continuously look for more cost-efficient and less power-consuming solutions for their embedded measurement systems. This thesis is concerned most of all with the implementation of cost-efficient/low-power measurement systems in embedded controllers. This includes some novel ideas in voltage, time and resistance measurements with embedded controllers and it will demonstrate how these quantities, analog in nature, can be measured accurately and precisely by inherently digital embedded controllers.
Parts of work
I. Bengtsson, L.E., Direct Analog-to-Microcontroller Interfacing, Sens. Act. A., 179, pp. 105-113, (2012). ::doi:: 10.1016/j.sna.2012.02.048
 
II. Bengtsson, L.E., Implementation of High-Resolution TDC in 8-bit Microcontrollers, Rev. Sci. Instr., vol. 83(4), no 045107, (2012). ::doi:: 10.1063/1.3700192
 
III. Bengtsson, L.E., A microcontroller-based lock-in amplifier for sub-milliohm resistance measurements, Rev. Sci. Instr., vol. 83(4), no 075103, (2012). ::doi:: 10.1063/1.4731683
 
Degree
Doctor of Philosophy
University
Göteborgs universitet. Naturvetenskapliga fakulteten
Institution
Department of Physics ; Institutionen för fysik
Disputation
Onsdagen den 5 juni 2013, kl. 10.00, FB-salen, Origovägen 6b (Chalmers)
Date of defence
2013-06-05
E-mail
lars.bengtsson@physics.gu.se
URI
http://hdl.handle.net/2077/32648
Collections
  • Doctoral Theses / Doktorsavhandlingar Institutionen för fysik
  • Doctoral Theses from University of Gothenburg / Doktorsavhandlingar från Göteborgs universitet
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Thesis (1.193Mb)
Spikblad (28.90Kb)
Date
2013-04-30
Author
Bengtsson, Lars
Keywords
microcontroller
measurement system
direct sensor-to-controller
time-to-digital converter
phase detector
lock-in amplifier
Publication type
Doctoral thesis
ISBN
978-91-628-8688-2
Language
eng
Metadata
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