Method for acoustically determining characteristics of a medium and device for acoustically determining characteristics of a medium

摘要

The invention relates to method and a device for determining characteristics of a medium, the method comprising the steps of:
a) providing a container (1, 1') delimiting an interior space filled with the medium (2) to be characterized such that an inner surface of a side wall (111) of the container (1, 1') forms an interface with the medium (2),
b) exciting acoustic waves (B) in the container side wall (111) by means of at least one transmitter (3),
c) converting at least a part of the energy associated with the acoustic waves (B) excited in the side wall (111) of the container (1, 1') into volume sound waves (A) of the medium (2),
d) reconverting at least a part of the energy associated with the volume sound waves (A) into acoustic waves in container side wall (111),
e) receiving acoustic waves evoked by the transmitter (3) by at least one receiver (4, 5, 6),
f) determining characteristics of the medium (2) from a signal generated by the receiver upon receipt of acoustic waves generated by reconverting energy of the volume sound waves (A) according to step d), and
g) determining a temperature of the medium (2) and/or the container side wall (111) from a signal generated by the receiver upon receipt of acoustic waves (B) travelling from the transmitter (3) to the receiver in the container side wall (100, 111).