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1. (WO1982000886) INDICATEUR DE DUREE DE VIE
Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

CLAIMS :
1. Apparatus for determining the deterioration of a component operable over a range of operating conditions that result in component deterioration at different rates, said component being arranged to have associated therewith an operating parameter monitor for providing a monitor signal representing the level of an operating parameter of the component, said apparatus including conditioning means for receiving said monitor signal and operative to condition said monitor signal for further processing, a deterioration data memory having stored therein deterioration data for said component for a plurality of operating parameter levels, and a deterioration calculator connected to receive said conditioned monitor signal and connected to said deterioration data memory, said deterioration calculator being operative to calculate a measure of component deterioration.
2. Apparatus according to claim 1, wherein said deterioration calculator is operative to calculate said measure of component deterioration at known time intervals and each said measure of component deterioration calculated constitutes an incremental deterioration since each respective immediately previous calculation.
3. Apparatus according to claim 2, wherein said time intervals are constant and said conditioned monitor signal is updated at said time intervals, said memory having stored therein measures of deterioration of said component at
increments of level of the operating parameter for said time intervals, said calculator being operative to determine which of said increments of level corresponds to said conditioned monitor signal and to retrieve the respective measure of deterioration from said memory.

4. Apparatus according to claim 2, wherein said time intervals are variable and said conditioned monitor signal is updated at said time intervals, said memory having stored therein measures of the rate of deterioration of said component at increments of level of the operating parameter, said
calculator being operative to determine which of said increments of level corresponds to said conditioned monitor signal and to retrieve the respective measure of deterioration rate from said memory and to calculate from said time interval and said
retrieved measure of deterioration rate a measure of component deterioration.
5. Apparatus according to claim 1 and further including output display means connected to said deterioration calculator and operative to provide a cumulative indication of component deterioration.
6. Apparatus according to claim 5, wherein said deterioration calculator includes a deterioration register for storing a value of component deterioration, said calculated measure of component deterioration being added to the value in said register to provide an updated value of component deterioration, said calculator being further operative to determine whether said updated value exceeds a predetermined unit of deterioration and, if so, to generate an output signal which is supplied to said output display means and to reduce the updated value in said deterioration register by said unit of deterioration.
7. Apparatus according to claim 2 and further including a parameter level range memory for storing cumulatively the total time the component has operated in each of a plurality of mutually exclusive operating parameter ranges, said calculator being operative to determine in which one of the ranges the level of the operating parameter represented by said conditioned monitor signal falls for the instant time interval and to add the respective time interval to the total time stored in the respective range portion of the parameter level range memory, said apparatus including printing means for printing the total times stored in the parameter level range memory.
8. Apparatus according to claim 1, wherein said operating parameter monitor is operable to generate an analogue signal representing said operating parameter level, said conditioning means including an amplifier stage having a zero adjust means enabling the preselection of a non-zero monitor signal level below which the conditioned monitor signal represents a zero level of the operating parameter.
9. Apparatus according to claim 1 and operative to
determine the deterioration of two or more components, each said component being arranged to have a respective operating parameter monitor associated therewith, said conditioning means including a multiplexer for switching respective monitor signals to said deterioration calculator, said multiplexer being
switchable at a predetermined channel select rate.
10. Apparatus according to claim 8, wherein said conditioning means includes an analogue to digital converter for
converting said analogue signal to a digital signal upon
receiving a convert command signal from said deterioration calculator.