| 摘要 |
The device includes a velocity measuring device and a velocity meter(16). The velocity measuring device includes: a vertical rod(7); a inclined rod cylinder(10) fixed to the vertical rod cylinder(8) perpendicularly; an angle sensor(15) for measuring the angle between the vertical rod(7) and the inclined rod(9); a plurality of supersonic vibrators(4,4',6,6') installed the ends of the rods(7)(9)(14); a level(11) attached to the top of the vertical rod(7). The velocity meter(16) includes; circuits of generating supersonic pulse, amplifying and pulse forming, measuring wave propagation time, transforming analog to digital, and memory; a microprocessor including a digital signal processing and operating unit and a display; and a high frequency cable.
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