A system installed on an aircraft comprising a memory storing static information at least one optical fibre grating 302; and an interrogator 308 which includes a light source 314 to transmit interrogation light to memory, a receiver 316 to receive return light from the memory, and an analyser 318 configured to analyse return light reading the stored static information. The memory and (or) the interrogator may form a part of a replaceable unit, removable through breakage of optical connections between memory and system, and which may comprise sensors (502 fig 5). The replaceable unit may include an actuator, avionics computer or remote data concentrator. The optical fibre may include Fibre Bragg Gratings (FBG) arranged in an optical fibre grating chain, each fibre grating storing static information in binary format (figure 1). In another embodiment the system comprises first and second memories each holding different static information and which are interrogated simultaneously by a single light source, receiver and analyser (figure 7) to provide first and second static information, and based on wavelength characteristics of the first and second light emanating from the first and second memories. More than one systems may also be installed on an aircraft.
System installed on an aircraft
19.06.2019
Patent
Elektronische Ressource
Englisch
IPC: | G01K MEASURING TEMPERATURE , Messen der Temperatur / G01D MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE , Anzeigen oder Aufzeichnen in Verbindung mit Messen allgemein / B64C AEROPLANES , Flugzeuge / G11B Informationsspeicherung mit Relativbewegung zwischen Aufzeichnungsträger und Wandler , INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT / G11C Statische Speicher , STATIC STORES |
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