| 摘要 |
PURPOSE:To make it possible to detect the speed in a specimen body with high accuracy, by sending the continuous or pulse wave of an ultrasonic wave into the specimen body and changing over the same to a detection range corresponding to a speed to detect an echo while displaying said echo by a function scale. CONSTITUTION:An ultrasonic vibrator 10 receiving control by a high voltage exciting part 20 and a trigger pulse generation part 30 is closely contacted with a body to be inspected to send a pulse or continuous ultrasonic wave and the echo from the interior of the body is received as an electric signal. After output is amplified by a high frequency amplifier part 40, it is supplied to a speed detection part 50 and processed along with the reference signal from a reference signal generation part 60 to detect the speed. Further, a detection range control part 70 for controlling the generation parts 30, 60, the detection part 50 and a display control part 80 are provided and the speed detected by the detection part 50 is displayed in a function scale by a display part 90 through the control part 80. By this method, a detection range is selected over a wide range and a speed can be read with high accuracy. |
