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Audio Signal Processing

Monitoring-apparatus-and-method

Method and apparatus for automatic shock electrode enabling

Systems and methods useful for maximizing the likelihood of successful defibrillation or ...

Monitoring apparatus and method

Details

Inventors: Gimblett, Christopher Francis; Essam, Derek Mark;
Assignee: Drallium Industries, Ltd (Bexhill-on-Sea, GB2)
Primary Examiner: Barlow; John
Assistant Examiner: Vo; Hien
Attorney, Agent or Firm: Wilson Sonsini Goodrich & Rosati

The present invention provides a method of monitoring a cyclic system comprising a plurality of cyclic means, comprising measuring a single parameter for the complete cyclic system, and, during a learning mode, cycling the cyclic system a plural number of times, and from the measured value of the parameter, providing a range of acceptable values, and during a subsequent monitoring mode comparing the measured value of said parameter with said range of values, and providing an output signal if the measured value of the parameter is outside said range of values. An apparatus for monitoring such a cyclic system is also provided, including a transducer means connected to detect one parameter of the cyclic system, a means to distinguish a learning mode of the system from a monitoring mode, a receive means to receive the output signal from the transducer means at predetermined points in the cycle of the cyclic system, a memory means operable during the learning mode to store values, a means to provide ranges of said values for each point in the cycle, a comparison means operable during the monitoring mode to compare for each point in the cycle the value of the output signals detected with the range of values for that point, and a means to provide a signal if the detected values are outside their range.

DETAILED DESCRIPTION We claim: 1.
A cyclic system comprising; a plurality of cyclic means comprising a plurality of separately operable means provided with a common source of power, transducer means connected to detect one parameter related to the source of power of the cyclic system common to the plurality of cyclic means; and monitoring apparatus comprising; means to distinguish a learning mode of the system from a monitoring mode; receive means to receive the output signal from said transducer means at predetermined points in the cycle of the cyclic system; memory means operable during said learning mode to store values relating to the output signal from said transducer means at said predetermined points in the cycle; means to provide ranges of said values for each said point in the cycle; calculator means, operable during the monitoring mode, to compare, for each said point in the cycle the value of the output signal detected with the range of values for that point, and indicator means to provide an indication signal if detected values are outside their range.
2.
A system as claimed in claim 1 in which distinguishing means is provided to distinguish at which point or points in the cycle the detected value lies outside its range.
3.
A system as claimed in claim 2 in which said distinguishing means includes a further transducer means to detect another parameter.
4.
A system as claimed in claim 2 which said distinguishing means comprises timing means for timing from the beginning of the cycle.
5.
A system as claimed in claim 4 in which means is provided to detect the start signal of a cycle.
6.
A system as claimed in claim 1 in which said means to provide ranges of said values for each point in the cycle provides said ranges of values during repetitive cycling of said system during said learning mode.
7.
A system as claimed in claim 1 in which said means to provide ranges of said values for each point in the cycle provides at least some of said ranges as predetermined ranges.
8.
A system as claimed in claim 1 including means to provide said range of values by an algorithm using standard deviation (SD) techniques

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