System controller and remote fault annunciator with cooperative storage, sharing, and presentation of fault data

An annunciator for the conduction status of individual switches wired into a series circuit records this status as status history at regular intervals in a memory. The status history is preferably recorded as individual entries having the identification number of an open switch along with a time sta...

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Bibliographic Details
Main Author PAUL B. PATTON
Format Patent
LanguageEnglish
Published 16.11.1995
Edition5
Subjects
ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDEDFOR ELSEWHERE
BLASTING
CHECKING-DEVICES
COMBUSTION APPARATUS
COMBUSTION PROCESSES
GENERATING RANDOM NUMBERS
HEATING
LIGHTING
MECHANICAL ENGINEERING
PHYSICS
REGISTERING OR INDICATING THE WORKING OF MACHINES
REGULATING OR CONTROLLING COMBUSTION
TIME OR ATTENDANCE REGISTERS
VOTING OR LOTTERY APPARATUS
WEAPONS
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Summary:An annunciator for the conduction status of individual switches wired into a series circuit records this status as status history at regular intervals in a memory. The status history is preferably recorded as individual entries having the identification number of an open switch along with a time stamp specifying the length of time which that switch has been open. The current entry is recorded in the memory and a new entry started each time the switch for which an entry in the memory is being created closes or a switch currently receiving power opens. A controller separate from the annunciator generates a request signal and provides a request time value to the annunciator specifying the time which has elapsed since the request condition was detected. The annunciator uses the request time value to determine the probable switch conduction status at the time of the request.
Bibliography:Application Number: AU19930044044