| 摘要 |
The device used for collecting information on the condition of a sewer network. It includes a set of observation devices mounted on a floating housing (1) introduced in the sewer pipe flow and connected by the rear (8) to a check cable which the operator can unreel from the surface of an upstream manhole, and is completed by display, control and optional recording systems on the surface. The on-board devices comprise a pan and tilt surface camera housed behind a glass dome (2), a bottom camera (3), distance detectors (6 and 7), a system transmitting wireless signals (5), lights, and batteries (4). The signals run along the inside of the pipe to a receiver located at a manhole and from there are transmitted to the station on the surface. The components are compact, reliable and preferably derived from mass-produced devices such as video surveillance cameras, computers or video screens. |
