| 摘要 |
<P>PROBLEM TO BE SOLVED: To allow accurate determination of the presence or absence of a defect of an analyte and a state of the defect. <P>SOLUTION: A device for state determination includes a transmission unit, reception units, a detection unit, and a determination unit. The transmission unit generates an ultrasonic wave and transmits an ultrasonic signal. Each of the reception units receives the ultrasonic signal which penetrates an analyte to acquire first reception signals. The detection unit measures crest values of the first reception signals of respective reception units to detect whether or not there is a first reception signal whose crest value is equal to or larger than a threshold. When there is the first reception signal whose crest value is equal to or larger than the threshold, the determination unit determines the first reception signal as a defect candidate signal. When there is the defect candidate signal, the detection unit 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 reception unit which receives the defect candidate signal to detect whether or not there is a second reception signal whose crest value is equal to or larger than the threshold. When there is the second reception signal whose crest value is equal to or larger than the threshold, the determination unit determines the defect candidate signal as a defect signal. <P>COPYRIGHT: (C)2013,JPO&INPIT |
