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we removal CH3

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Robin P. Clark 2013-09-11 15:37:01 +01:00
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commit 9d85c08ea0
1 changed files with 2 additions and 3 deletions
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submission_thesis/CH3_FMEA_criticism/copy.tex
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@ -294,7 +294,7 @@ analogue electronics only~\cite{smart_instruments_1514209}.
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It is termed `smart' because it has some software, or intelligence incorporated into it. It is termed `smart' because it has some software, or intelligence incorporated into it.
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For instance, an AVO-8 multi-meter circa 1970, uses only analogue electronics,it can be determined For instance, an AVO-8 multi-meter circa 1970, uses only analogue electronics and it can therefore be determined
using FMEA how component failures within it could affect readings. using FMEA how component failures within it could affect readings.
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A modern multi-meter will have a small dedicated micro-processor and sensing electronics, all on the same chip, A modern multi-meter will have a small dedicated micro-processor and sensing electronics, all on the same chip,
@ -310,8 +310,7 @@ FMEA), to ensure that failure modes within the instrument cannot lead to invalid
Some work has been performed to offer black~box---or functional testing---of these instruments instead of Some work has been performed to offer black~box---or functional testing---of these instruments instead of
static analysis~\cite{Bishop:2010:ONT:1886301.1886325}. static analysis~\cite{Bishop:2010:ONT:1886301.1886325}.
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However, black box testing of smart instruments is However, black box testing of smart instruments is yet to be an approved method of validation.
yet to be an approved method of validation.
Most modern instruments now use highly integrated electronics coupled to micro-controllers, which read and filter the measurements, Most modern instruments now use highly integrated electronics coupled to micro-controllers, which read and filter the measurements,
and interface to an LCD readout. and interface to an LCD readout.