# US 8,150,566 B2 · System for selecting data representing an air parameter, process and computer program relating to the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,150,566 B2 - Document ID: US8150566B2 - Status: Granted - Kind: B2 - Application number: 12/122,260 - Filed: 2008-05-16 - Published: 2008-11-20 - Granted: 2012-04-03 - Earliest claimed: 2007-05-18 - Assignees: Airbus Operations GmbH - Inventors: Julien Feau - Web page: https://patentgrep.com/patent/US8150566B2 ## CPC - G01P 13/025: {indicating air data, i.e. flight variables of an aircraft, e.g. angle of attack, side slip, shear, yaw} - G01P: MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT (measuring or recording blood flow A61B5/02, A61B8/06; monitoring speed or deceleration of electrically-propelled vehicles B60L3/00; vehicle lighting systems adapted to indicate speed B60Q1/54; determining position or course in navigation, measuring ground distance in geodesy or surveying G01C; combined measuring devices for measuring two or more variables of movement G01C23/00; measuring velocity of sound G01H; measuring velocity of light G01J7/00; measuring direction or velocity of solid objects by reception or emission of radiowaves or other waves and based on propagation effects, e.g. Doppler effect, propagation time, direction of propagation, G01S; measuring speed of nuclear radiation G01T; measuring acceleration of gravity G01V; {measuring or recording the speed of trains B61L23/00; speed indicators incorporated in motor vehicles B60K35/00; measuring frequency or phase G01R; traffic control G08G}) ## Abstract A system for selecting a datum among a set of data representing an air parameter, this set comprising at least two engine data obtained by measurement respectively in the zone of two engines of an aircraft and at least two reference data obtained by measurement in the zone of the fuselage of the aircraft, the system comprising: means for verifying pairwise agreement of three data of the set of data; means for selecting a reference datum among the said three data if such agreement is verified. A process and a computer program relating thereto are also proposed. ## Claims ### Claim 1 A system for selecting a datum among a set of data representing an air parameter, the set of data including at least two engine data respectively obtained in two control units by measurement respectively in a zone of two engines of an aircraft and at least two reference data respectively obtained in two processing units by measurement in a zone of a fuselage of the aircraft, the system comprising: at least one of the control units configured to verify pairwise agreement of three data of the set of data, and to select a reference datum among the said three data if the agreement is verified, wherein at least one of the processing units is configured to compare the two engine data from at least one of the control units, and produce a signal resulting from the comparison of the two engine data and to send the resulting signal to at least one of the control units. ### Claim 2 (depends on 1) The selection system according to claim 1, wherein the at least one control unit is configured to verify agreement of a reference datum with another datum of the set of data if no pairwise agreement of three data is verified, and to select a reference datum for which the agreement with another datum is verified. ### Claim 3 (depends on 1, 2) The selection system according to claim 1 or 2, wherein to verify the agreement of three data, the at least one control unit is configured to determine if a first reference datum is in agreement with a second reference datum and if the first reference datum is in agreement with an engine datum, and to select the first reference datum when the first reference datum is in agreement with the second reference datum and the engine datum. ### Claim 4 (depends on 3) The selection system according to claim 3, wherein to verify the agreement of three data, the at least one control unit is configured to determine, when the first reference datum is not in agreement with the second reference datum and with the engine datum, if a third reference datum, which may be the same as the first reference datum or the second reference datum, is in agreement respectively with the two engine data, and to select the third reference datum when the third reference datum is in agreement respectively with the two engine data. ### Claim 5 (depends on 4) The selection system according to claim 4, wherein to verify the agreement of three data, the at least one control unit is configured to determine, when the third reference datum is not in agreement respectively with the two engine data, if a reference datum is in agreement respectively with two other reference data, and to select the reference datum if it is in agreement with the two other reference data. ### Claim 6 (depends on 1) The selection system according to claim 1, wherein the at least one processing unit is configured to determine a reference datum as a function of signals measured by an associated sensor, and compare the determined reference datum with each of the engine data. ### Claim 7 (depends on 1) The selection system according to claim 1, wherein the at least one control unit is configured to compare one reference datum with another reference datum. ### Claim 8 (depends on 1) An aircraft, comprising: an engine control system; and the system according to claim 1 for selecting a datum to be used in the engine control system. ### Claim 9 A process for selecting one datum among a set of data representative of an air parameter, the set of data including at least two engine data respectively obtained in two control units by measurement respectively in a zone of two engines of an aircraft and at least two reference data respectively obtained in two processing units by measurement in a zone of a fuselage of the aircraft, the process comprising: comparing the two engine data by at least one of the processing units; sending a signal resulting from the comparing to at least one of the control units; verifying pairwise agreement of three data of the set of data; and selecting, if agreement is verified, a reference datum among the three data. ### Claim 10 (depends on 9) A computer program embodied on a non-transitory medium that when executed by a data processing system, causes the data processing system to perform the process according to claim 9.