METHOD AND ACOUSTIC DEVICE FOR MEASURING SURFACE MOVEMENTS

• Main Authors: SIMILOWSKI THOMAS, ING ROS KIRI, FINK MATHIAS, JEGER-MADIOT NATHAN
• Format: Patent
• Language: Chinese; English
• Published: 29.10.2019
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; DIAGNOSIS; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; MEDICAL OR VETERINARY SCIENCE; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; SURGERY; TESTING

The invention relates to a method for detecting movements of a plurality of points (P) of a surface (21), comprising a measuring step during which an incident ultrasonic wave is emitted into the air towards the surface and an ultrasonic wave reflected into the air by the surface (21) is detected. During the measuring step, each measuring point is illuminated by the incident ultrasonic wave at a multiplicity of angles of incidence, and the reflected ultrasonic wave is detected by a network of receiving transducers (3) comprising a plurality of ultrasonic receiving transducers (3a). The movements of the surface are determined at a measuring point by determining a delay and/or phase shift between two path-forming signals for said measuring point. 一种用于检测表面(21)上多个点(P)的运动的方法，包括测量步骤，在该测量步骤中，将入射超声波朝向表面发射到空气中，并检测在空气中经表面(21)反射得到的超声波。在该测量步骤中，用入射超声波以多个入射角照射每个测量点，并且由多个超声接收换能器(3a)组成的接收换能器网络(3)来检测反射超声波。通过确定所述测量点的两个波束成形信号之间的延迟和/或相移来确定表面在该测量点处的运动。