Basic Building Blocks for Biomedical Ontologies Barry Smith 1.
Basic Components of a Biomedical System
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Transcript of Basic Components of a Biomedical System
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Basic components of a
Biomedical system
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The basic objectives of any instrumentation system are
1.Information-gathering system: instrumentation isused to measure natural phenomena and other variables
2. Diagnosis: Measurements are made to help in thedetection of some malfunction of the system beingmeasured.
3. Evaluation: Measurements are used to determine theability of a system to meet its functional requirements.
4. Monitoring: Instrumentation is used to monitor someprocess or operation in order to obtain continuous orperiodic information about the state of the system beingmeasured.
. Control: Instrumentation is sometimes used to
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! bloc" diagram of the man#instrument system is sho$n in%i ure
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Subject The subject is the human being on $hom the measurements aremade.
StimulusIn many measurements& the response to some form of e'ternalstimulus isrequired. The stimulus may be visual or tactile
TransducerIn general& a transducer is de(ned as a device capable of convertingone form of energy or signal to another. In the man#instrumentsystem& each transducer is used to produce an electric signal that isan analog of the phenomenon being measured. The transducer maymeasure temperature& pressure& )o$& or any of the other variables
that can be found in the body& but its output is al$ays an electricsignal.
Signal-Conditioning Equipment The part of the instrumentation system that ampli(es& modi(es& or in
anyother $ay changes the electric output of the transducer is called
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Display Equipment The electrical output of the signal#conditioning equipment must beconverted into a form that can be perceived by one of man*s sensesand that can convey the information obtained by the measurement ina meaningful $ay.
Recording, Data-Processing, and Transmission Equipment The measured information is recorded for possible later use or totransmit it from one location to another.
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