| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method and device for maintenance of a conduit that can perform maintenance work in a region in which the conduit cannot directly be seen from a manhole side, based on an image signal taken by a wireless communication camera. <P>SOLUTION: An imaging part 12 of the wireless communication camera 14 is arranged at a side opposite to a manhole D rather than the region in which the maintenance work is performed in lateral piping 11, the image signal imaged by the imaging part 12 of the wireless communication camera 14 is transmitted, by electromagnetic waves, to the manhole D side in a space 13 in the lateral piping 11 by a transmission and reception part 15 of the wireless communication camera 14 arranged at the side opposite to the manhole D rather than the region in which the maintenance work is performed in the lateral piping 11, the image signal which is transmitted, by the electromagnetic waves, by a transmission and reception part 18 of a radio relay 17 arranged in a space which communicates with a space 13 in the lateral piping 11 and with a space 16 in the manhole D, and the maintenance work is performed to the region in which the conduit cannot directly be seen from the manhole D side at the internal peripheral face 11a of the lateral piping 11 on the basis of the image signal which is received by the transmission and reception part 18 of the radio relay 17. <P>COPYRIGHT: (C)2012,JPO&INPIT |
