| 摘要 |
<P>PROBLEM TO BE SOLVED: To exactly determine presence/absence of a defect and a state of the defect of an analyte. <P>SOLUTION: This state determination device includes: a transmitting part; a receiving part; a detection part; and a determination part. The transmitting part generates ultrasonic waves and transmits a ultrasonic signal. The receiving part receives the ultrasonic signal which penetrates the analyte to acquire first reception signals, respectively. The detection part measures crest values of the first reception signals for every receiving part to detect whether or not there is a first reception signal whose crest value is more than a threshold. When there is the first reception signal whose crest value is more than the threshold, the determination part determines the first reception signal as a defect candidate signal. When there is the defect candidate signal, the detection part measures crest values of received second reception signals when time elapses for one or more integral multiples of a predetermined period of time from the time when the defect candidate signal is received in the receiving part which receives the defect candidate signal to detect whether or not there is a second reception signal whose crest value is more than the threshold. When there is the second reception signal whose crest value is more than the threshold, the determination part determines the defect candidate signal as a defect signal. <P>COPYRIGHT: (C)2012,JPO&INPIT |
