Patent ID: 8078343

Claim:
A device for controlling two attitude reference units of the AHRS type for aircraft, each AHRS comprising at least a first set of magnetometer measurements and at least a second set of gyroscopic measurements, each AHRS having two modes of operation, the first mode, called “slave” mode, supplying the flight system with the information coming from the first set, the second mode, called “DG” mode, supplying the flight system with the information coming from the second set, said device comprising at least one man-machine interface, at least one display device, connection means for connecting the man-machine interface and the display device, and the display device and the AHRS units, wherein the display device comprises means for displaying a window for controlling the two attitude reference units, said window comprises three regions, the first region dedicated to the first AHRS unit, the second region dedicated to the second AHRS unit, the third region dedicated to the simultaneous control of the two AHRS units, the first set of symbols presented in the first region and the second set of symbols presented in the second region comprise: representations means for selecting the first or the second mode of operation of the first or of the second AHRS; a representation of the value of the magnetic heading of the aircraft; and a representation of the difference in heading existing between the heading indication supplied by the first set and the heading indication supplied by the second set; and the third set of symbols presented in the third region comprises representation means for simultaneous selection on the two AHRS of one of the two types of mode.