| 摘要 |
The signalling device is used in automated systems for furrow irrigation. It automates the watering process. The signalling device consists of a box (5), while its bottom edge continues in a pipe (11) with a vertical knee, whose outlet is closed through a rubber gasket (12), fitted in a carrier (13), which is located loosely in a leading sleeve (14), affixed to the box (5). To the carrier (13), a cylindrical stem (15) is attached, shafted in a cap (15) of the leading sleeve (14). To the cylindrical stem (15), the one edge of a flexible thread (17) is attached. It passes through rolls (18), which are shafted on a frame (19), stationed in the soil through pillars (20). The other edge of the flexible thread (17) holds a reservoir (21), above which there is an effluent pipe (22).
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