Fault monitoring
July 14, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesPay telephone station monitor system Monitoring system Process control system with improved fault isolation Abnormality detecting apparatus for means for sensing operating parameters of an internal combustion engine Method for controlling output of alarm information Method and apparatus for measuring the liquid level in tanks subjected to varying accelerations Remote supervisory monitoring and control apparatus connected to monitored equipment Digital audio data muting system and method Protection and recovery of telephone line interface circuits Event correlation in telecommunications networks Patent #: 5646864 InventorsAssigneeApplicationNo. 860049 filed on 07/14/1997US Classes:340/506, Alarm system supervision340/500, CONDITION RESPONSIVE INDICATING SYSTEM340/526, Predetermined rate of occurrence455/423, Diagnostic testing, malfunction indication, or electrical condition measurement700/80Warning or alarmExaminersPrimary: Crosland, Donnie L.Attorney, Agent or FirmForeign Patent References
International ClassG08B 026/00Foreign Application Priority Data1994-12-23 EPAbstractFaults occurring in a telecommunications system are monitored identifying their time of onset and reporting them to an operator through an interface if they have not cleared within a predetermined interval. Transient faults, which do clear within that interval, are not reported directly, but only if such faults occur more frequently than a predetermined rate. This is determined by establishing a scan interval, and an analysis period equal to a plurality of scan intervals, monitoring the system continuously for the occurrences of faults, and storing their times of occurrence in a store. At the end of each scan interval, the number of occurrences of the fault during the analysis period which ends at the end of the scan interval are counted by a counter. If the number of occurrences of the fault in the analysis period is equal to or greater than a threshold value selected by user input an alarm indicator is activated. This allows isolated transient faults to be disregarded, allowing the user to concentrate on recurrent intermittent faults.Other References
Field of SearchAlarm system supervisionCONDITION RESPONSIVE INDICATING SYSTEM With particular system function (e.g., temperature compensation, calibration) Threshold or window (e.g., of analog electrical level) Predetermined rate of occurrence Diagnostic testing, malfunction indication, or electrical condition measurement | |
