G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 22/02 (2006.01) G01B 15/00 (2006.01) G01B 15/04 (2006.01) G01S 11/06 (2006.01) G01S 13/04 (2006.01) G06T 7/60 (2006.01)
Patent
CA 2121311
A method of inspecting an abnormality occurring inside a pipe to be inspected and an apparatus for practicing the method, includes the steps of transmitting an electric wave having a predetermined frequency from an antenna of a transmitter located at a predetermined position inside the pipe, receiving the transmitted electric wave by an antenna of a receiver located at a predetermined position inside the pipe, and discriminating the characteristic of the received electric wave. The characteristic of the received electric wave is the intensity of the electric wave, and an attenuation amount is detected in the first example. On the other hand, the characteristic of the received electric wave is a time required to reflect the transmitted electric wave until it is received by the receiver, and a time interval between transmission of the electric wave and reception of the reflected electric wave is measured in the second example.
Furusawa Hajime
Hosohara Yasuharu
Kobori Takashi
Suyama Kiichi
Mcfadden Fincham
Tokyo Gas Co. Ltd.
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