The words ‘sensor’ and ‘transducer’ are both widely used in the description of measurement systems. The former is popular in the USA whereas the latter has been used in Europe for many years. The word ‘sensor’ is derived from entire meaning ‘to perceive’ and ‘transducer’ is from transducer meaning ‘to lead scross’. A dictionary definition of ‘sensor’ is `a device that detects a change in a physical stimulus and turns it into a signal which can be measured or recorded; a corresponding definition of ‘transducer’ is ‘a device that transfers power from one system to another in the same or in the different form’. A sensible distinction is to use ‘sensor’ for the sensing element itself and ‘transducer’ for the sensing element plus any associated circuitry. All transducers would thus contain a sensor and most (though not all) sensors would also be transducers. Any sensor is based on a simple concept that physical property of a sensor must be altered by an external stimulus to cause that property either to produce an electric signal or to modulate (to modify) an external electric signal. Quite often, the same stimulus may be measured by using quite different physical phenomena, and subsequently, by different sensors. Selection criteria depend on many factors, such as availability, cost, power consumption, environmental conditions, etc. The best choice can be done only after all variables are considered. This book covers the fundamental principles of Sensors & Transducers and their applications. Beginning with an introduction to the subject, the book discusses at length the mechanical, electronics/electrical and computer engineering aspects of Sensors and Transducers.
AUTOR: Jeorge Phillip
EDITORA: Auris Reference
DISPONIBILIDADE DO PRODUTO: Sob Encomenda - Até 40 dias ( Importação )