Communications – electrical: acoustic wave systems and devices – Distance or direction finding – With electromagnetic wave
Patent
1978-07-24
1980-11-18
Ciarlante, Anthony V.
Communications, electrical: acoustic wave systems and devices
Distance or direction finding
With electromagnetic wave
343112D, G01S 1100
Patent
active
042349427
ABSTRACT:
Pipe measuring apparatus is disclosed. In the preferred embodiment, a transmitter is arranged at one end and a receiver at the other end of the pipe. At the transmitter, there is a tone generator which transmits acoustic signal along the pipe. In addition, a power amplifier drives an output diode which transmits light of a specified frequency, and both are funneled along the pipe to be measured. At the receiving end, an amplifier picks up the sound. In like manner, the light which is transmitted through the pipe is also detected. Both detected signals are amplified. After amplification, their modulating envelopes are compared to one another. There is a time shift which is a function of transmission distance, treating the transmitted light as the reference. This time shift is converted by a scale factor into a multi-digit output. The conversion occurs through the use of a clock connected through a decimal counter which is gated on by the light signal and which is gated off by the advent of the sound signal. The output is proportionate to pipe length, and, with appropriate calibrations, length can be measured directly.
REFERENCES:
patent: 3566348 (1971-02-01), Leyden et al.
patent: 4055830 (1977-10-01), Wilson et al.
Meyers John D.
Prause Benjamin G.
Ciarlante Anthony V.
D & W International, Inc.
LandOfFree
Apparatus for measuring the length of pipe and other hollow memb does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for measuring the length of pipe and other hollow memb, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for measuring the length of pipe and other hollow memb will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-600939