초록 ▼

Grain-destroying insects, and those which may infect other types of particulate matter, when feeding and moving about, induce vibrations in the grain or particulate material affected which is modified and amplified to an audible level. The detection is performed using a crystal with piezoelectric pr

Grain-destroying insects, and those which may infect other types of particulate matter, when feeding and moving about, induce vibrations in the grain or particulate material affected which is modified and amplified to an audible level. The detection is performed using a crystal with piezoelectric properties directly and physically connected to a vibratory receiving structure such as an elongated probe, a thin, flat diaphragm or the like which mechanically amplifies the vibrations to the crystal. The vibratory sounds are then analyzed, such as by comparison with other records of known destructive insects to determine the probable species of insect and its location.

대표청구항 ▼

An apparatus for detecting the presence of insects in particulate matter comprising: (a) a vibration receiving structure; (b) a piezoelectric transducer means physically contacted by the vibration receiving structure at an off-center location on the transducer means for directly detecting the vibrat

An apparatus for detecting the presence of insects in particulate matter comprising: (a) a vibration receiving structure; (b) a piezoelectric transducer means physically contacted by the vibration receiving structure at an off-center location on the transducer means for directly detecting the vibrations in the particulate matter via the vibration receiving structure and generating electrical signals in response to the detected vibrations; (c) means for selectively amplifying the portion of the electrical signals representative of the frequency range of vibrations generated by insects which may be present in the particulate matter; and (d) means for analyzing the electrical signals representative of the vibrations to identify the species within the particulate matter.