| 摘要 |
The surveillance device uses a surveillance unit such as a video camera, the signals from which are received by a detection unit, the device being mounted on a mobile chassis driven by propulsion means inside a tube equipped with a longitudinal window through which passes the the transverse axis of sight of the surveillance unit, wherein the window is covered by a longitudinal elastic flap one side of which is attached to the tube, the other side remaining free, shaped elements attached to the chassis raising the longitudinal flap on either side of the axis of sight and beyond this axis. This device can be used for surveillance over long distances. |
