Fault tolerant multipoint control and data collection system
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United States of America Patent
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Nov 11, 1997
Grant Date -
N/A
app pub date -
Jun 30, 1995
filing date -
Dec 11, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A multipoint data collection system uses multiple parallel data buses connecting a central controller to addressable sensor interfaces to permit any sensor to be connected to a central controller over any one of the data buses. Both ends of each data bus are connected to the central controller, allowing sensor interfaces to be addressed even if all data buses are cut. Faults on a data bus and defective sensor interfaces may be bypassed through one or more bypass buses that may be addressably switched into use as desired.
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