The aim of this work was to conduct a survey of current sensor measurement technologies and investigate sensor linearisation, cahbration and compensation methods m order to determine the methods most suitable for generic embedded sensor implementation.
The thesis contains a comprehensive survey of sensor technologies and their interfacing requirements as a prerequisite for determining modules required by the generic embedded sensor interface. Different linearisation and calibration techmques are investigated and the most promising techniques, curve fitting and progressive polynomial calibration method, are then examined in greater detail and simulations performed to compare their performance. The fundamental limitations and trade offs in design and implementation on the microprocessor of these methods are studied. The design of the compensation module is also presented and its implementation on the microprocessor m the form of the C code is described.
All methods are tested and implemented on a PIC microcontroller as a part of linearisation, cahbration and compensation module of the generic embedded sensor interface.