Transcription of INSTRUMENTATION AND CONTROL SYSTEMS
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1 INSTRUMENTATION AND COMPUTER CONTROL SYSTEMS SENSORS AND SIGNAL CONDITIONING Steve Collins Michaelmas Term 2012 Introduction An INSTRUMENTATION system obtains data about a physical system either for the purpose of collecting information about that physical system or for the feedback CONTROL of the physical system Any INSTRUMENTATION system must include an input transducer (sensor), such as a strain gauge, whose response to a particular stimulus can be measured electrically. The other component that is generally present in modern INSTRUMENTATION SYSTEMS is a digital processor, such as a computer or a micro-controller.
As shown in Figure 1 the characteristics of typical sensors and ADCs mean that the data collection (or acquisition) part of a typical modern instrumentation system can be split into the three functional blocks, a
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