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Sensors and Infrastructure Health

Authored by: Mohammed M. Ettouney , Sreenivas Alampalli

Infrastructure Health in Civil Engineering

Print publication date:  September  2011
Online publication date:  April  2016

Print ISBN: 9780849320408
eBook ISBN: 9781420003758
Adobe ISBN:


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In a general overview, sensing can be defined as the process of knowing specific information about the system of interest. With this general definition, we can include human inspection as a sensing activity. A more technical definition of sensing is that it is a process where sensors interrogate (interact) the system, and produce certain information about the state of the system. We have thus identified several components in the sensing process: (a) the sensors, (b) the information, (c) the system. The sensors are those vehicles that will detect the state of the system and produce the appropriate information to the user. The information (defined later as type of measurements [ToM]) is transmitted to end user by the sensors: they describe specific states of the system. The system is the infrastructure on hand, or any component within it. Figure 5.1 shows this relationship.

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