| Patent application number | Description | Published |
|---|
| 20090292951 | METHOD AND DEVICE FOR FAULT LOCATION IN A SYSTEM - The invention relates to a method and a device for locating a fault in a system. The system includes a set of elements. The elements are connected in a network. Each element is associated with an operational status and a probability of failure. The method according to an embodiment of the invention includes, for each of the elements having a status indicating a malfunction, denoted as a defective element, the creation, from the system topology, of an expression comprising terms corresponding to functional elements connected to said defective element. If several expressions have been created in the preceding step, then merge expressions having at least one term in common. For each expression, delete terms in the expression corresponding to elements having a “healthy” status. Calculate a minimal expression from the preceding expression. Calculate failure probabilities for selected members of the minimal expression based on failure probabilities of the corresponding elements. Calculate the location of the fault to the elements corresponding to the members of the minimal expression for which the ratio of failure probabilities to exposure time is greater than a threshold. | 11-26-2009 |
| 20090306838 | METHOD AND DEVICE FOR AIDING THE MAINTENANCE OF A SYSTEM - The invention relates to a method for aiding the maintenance of a system, the system comprising a set of networked elements, the system being accompanied by indications defining subsets of networked elements E | 12-10-2009 |
| 20110040441 | DEVICE FOR SYSTEM DIAGNOSIS - The invention relates to a device for system diagnosis of an aircraft. The device includes: means for the monitoring of equipment of the system, the means for emitting messages of observations on the basis of effects produced by equipment; means for the determination of a set of observations on the basis of the messages of observations arising from the monitoring of a log of the messages of observations and of a model representing a current state of the system; means for the determination of indictments on the basis of observations of the set of observations and of a behavioural model of the system, the indictments being logical relations between operating modes of equipment having produced effects; and means for the determination of maintenance operations on the basis of the indictments. | 02-17-2011 |
| Patent application number | Description | Published |
|---|
| 20080215194 | FORMULATION OF A PREVENTIVE MAINTENANCE MESSAGE RELATING TO THE FUNCTIONAL DEGRADATIONS OF AN AIRCRAFT - A method of preventive maintenance is disclosed for an aircraft. The aircraft includes components, including items of equipment of the aircraft and/or electronic modules and/or physical links. The lifetime information for the components is known. The aircraft also includes means for monitoring the components, a centralized maintenance system, and means for estimating the life time of the components. The aircraft carries out a set of functions, each being ensured by a chain of components. The method comprises several steps including, a first step of locating the degradations of the items of equipment, a second step making it possible to allocate the located degradations to the various functions of the aircraft, a third step of estimating the lifetime of the functions identified in the second step, and a fourth step of formulating the maintenance message constructed on the basis of the previous steps. | 09-04-2008 |
| 20080269982 | Fault Validation Method and System for Aerodynes - The present invention relates to a fault validation method and system for aerodynes. The method includes at least a configuration step associating with each detectable fault equipment units for which a copy of memory segments is to be made. Verification tests to be performed include a step for copying memory segments and a step for verifying equipment units. | 10-30-2008 |
| 20080304418 | MAINTENANCE SYSTEM FOR A SET OF EQUIPMENT - The invention relates to a maintenance system for a set of equipment of an aircraft, forming a physical network ( | 12-11-2008 |
| 20100010708 | Methods of Identifying Flight Profiles in Aircraft Maintenance Operations - The method of identifying a flight profile of an aircraft, the aircraft including a centralized maintenance system and an item of equipment including a component designed to measure the environmental conditions, comprises:
| 01-14-2010 |
| 20100125379 | Device Allowing Improvement in Maintenance Procedures for Onboard Equipment - The present invention relates to the field of aiding ground maintenance of an aircraft. More particularly, the invention consists of a portable access terminal intended to aid maintenance, commonly designated by the acronym PMAT for Portable Maintenance Access Terminal. | 05-20-2010 |
