Tunnel measuring apparatus and method

Details Tunnel measuring apparatus and method Tunnel measuring apparatus and method

1987-12-07

1989-12-19

Lall, Parshotam S.

Boots, shoes, and leggings

364550, 364560, 364512, 73786, 73787, G01N 2904

Patent

active

048887200

ABSTRACT:
Apparatus and method for automatically measuring the interior dimensions of tunnels. The apparatus is mounted on an inspection vehicle and comprises a plurality of ultrasonic transducers which are arranged to form an imaginary template a predetermined distance from the tunnel wall. The transducers are periodically operated by a computer to derive measurement information as the inspection vehicle moves through the tunnel. The results of each measurement are stored by the computer for subsequent analysis.

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patent: 4495816 (1985-01-01), Schlumberger
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patent: 4571999 (1986-02-01), Arita et al.
patent: 4578665 (1986-03-01), Yang
patent: 4619143 (1986-10-01), Franken

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