ULTRASONIC BODY RECOGNIZING DEVICE

PURPOSE:To take a measurement of distance while reducing the evil influence of multiple reflection by exciting an ultrasonic vibrator periodically by an oscillator which has >=2 kinds oscillation frequencies, and selecting the reflected wave of an ultrasonic wave signal from an obstacle as to a f...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	OKAWA SHUJI, KAKO MASAO
Format:	Patent
Sprache:	eng
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING
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