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Sensors

165-2 Sensors Physics Engineering and Embedded Systems - Apprenticeship S6
Lessons : 12 h TD : 9 h TP : 3 h Project : 0 h Total : 24 h
Co-ordinator : Herve Gilles
Prerequisite
Preparatory classes or undergraduate physics courses
Course Objectives
In a large number of industrial and scientific applications, it is necessary to use sensors to carry out the measurement of physical quantities. The sensors used combine both the transducer whose role is to convert the physical quantity to be measured into an electrical signal and a signal acquisition and processing chain. The objective of this course, mainly dedicated to the study of the physical transducer, is to present the most commonly used sensors in the industrial or scientific world. It exposes, from known physical principles, several examples of applications. It must allow the future engineer to be able, from a specification, to select the sensor or family of sensors suited to its application. This course is combined with other courses in the specialty such as signal processing and electronic instrumentation.
Syllabus
The course is divided into several distinct parts - General principles of measurements and measurement chains; definition of the characteristic quantities of a measurement. The rest of the course presents several principles of transducers. This presentation is made from the most commonly studied physical quantities. In each case, the principle of measurement is explained on the basis of known physical laws; the performances of the sensors are specified and examples of application are presented. Through these different examples, it is shown that a limited number of techniques (optical, mechanical, acoustic, electrical, magnetic) are used for all of the quantities studied. Three main categories of physical quantities are more particularly approached: - Measurement of mechanical quantities (distance, speed, forces, deformation, pressure…., Measurement of magnetic quantities (magnetic field, electric current) and measurement of temperature.
Practical work (TD or TP)
The purpose of the exercices is to deepen 4 to 5 marketed devices that concretely illustrate the education provided.
A 3h practical work session is proposed with the study of an optical triangulation sensor, piezoresistive strain gauge, Hall effect sensor. Handling of Arduino modules. Statistical data processing.
Acquired skills
Choice and implementation of sensors
Bibliography
- Les Capteurs en instrumentation industrielle, G. Asch, Editions Dunod
- Capteurs : principes et utilisations, F. Baudoin, M. Lavabre, Editions Casteilla

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