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US 6,618,691 B1Granted
Evaluation of alarm settings
AssigneeAlan J Hugo
InventorAlan Hugo
Life of this patent
Estimating the term…
Abstract
A method for evaluating alarm settings for continuous or semi-continuous processes that gives an indication of the probability that an alarm will occur for values preceding the alarm value, and the probability that the process will continue on to a value following the alarm value. The technique requires only a history of alarm events and process measurements.
Claims3
A novel method for evaluating the setting of an existing alarm applied to a continuous or semi-continuous process, the method comprising:
- a. steps for retrieving a historical record of past alarm values and associated times and past process measurements and associated times;
- b. steps for calculating two probability curves representing pre and post probabilities of the measurement in relation to the alarm from said historical record of past alarms and past process measurements;
- c. steps for displaying the said probabilities, either in numerical or graphical form.
Dependencies are inferred from the claim text.