CALIBRATION METHOD AND CONTROL METHOD OF A DEVICE FOR DETECTING OBJECTS BY ULTRASOUND IN AIR

摘要

The invention relates to a method for controlling a device for detecting objects by ultrasound in air, comprising a plurality of transducers used as transmitters intended to operate in a phased network and at least one transducer used as a receiver mounted on a support, in which a calibration step is carried out prior to at least one detection operation to determine a constructive phase shift of the transmitter relative to a reference transmitter, which is memorized so as to subsequently correct the theoretical phase shifts transmitters of the value of the constructive phase offset during subsequent fire orders.