摘要:
A method of testing the quality of a fruit including applying a dynamic impact force to the fruit, detecting the mechanical response of the fruit to the dynamic force via a piezoelectric film transducer supported on a displaceable resilient base member such that the film transducer is bent by the dynamic impact force, to induce a strain in the film transducer, and the film transducer outputs an electrical signal corresponding to the change of the induced strain in the film transducer caused by the dynamic force and analyzing the electrical signal to indicate the quality of the fruit. Apparatus for carrying out the method is also described and claimed.
摘要:
A method and a system for a non-destructive determination of quality parameters in fresh produce. Ultrasonic sound waves are transmitted into the produce from a transducer and are received by a nearby transducer, both gripped via special arrangement cage, allowing local ultrasonic tests on the produce. Various acoustical parameters such as wave velocity and signal attenuation of the detected sound waves are analyzed in conjunction with the maturity of the sample.