US 5,479,346 AGranted

Process and device for detecting the current phase of operation of a system with multiple phases of operation

AssigneesAerospatiale Societe Nationale Industrielle, Aerospatiale Protection Systemes Apsys

InventorsPierre Lecomte, Laurent Coquin

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Abstract

A process and device for detecting the current phase of operation of a system with multiple phases of operation. According to the invention, the operation is partitioned into a set of phases (I to X) from which is chosen a reference phase (I). The set of possible switches to the other phases is determined for each phase. And, a set of parameters is defined for each of the switches, the set of parameters being characteristic of the switch. The sets of parameters are continuously detected. The chain of switches actually involved is determined on the basis of the reference phase (I) with the aid of variations in the parameters, and the current phase of operation is deduced from the chain of switches. Although the invention is applicable to numerous systems, one such system to which it is applicable is the operation of a transport airplane.

Claims6

Dependent claims

A process for detecting the current phase of a multi-phase operation of an aircraft, comprising the steps of:

partitioning said operation into a set of phases, so that each phase corresponds to a partial domain of said operation, and so that said set of phases covers the whole of said operation;
choosing a reference phase among said phases;
determining for each phase, the set of possible transitions to the other phases;
defining for each of said transitions, a set of variable parameters characteristic of each of said transitions;
continuously detecting said sets of variable parameters during said multi-phase operation;
continuously detecting variations in said variable parameters;
using said variations in said sets of variable parameters, determining the chain of transitions actually carried out relative to said reference phase;
and
deducing said current phase of operation from said determined chain of transitions.

6 more elements

Dependencies are inferred from the claim text.