| 摘要 |
<p>A device for detecting the passage of the grass in a collecting tunnel (1) of a lawnmower; is disclosed the lawnmower comprises at least a cutting blade (2) and a container (3) and the tunnel that is suitable for conveying the cut grass into the container. The device comprises at least a pair of elements (10-11, 50-51, 60-61) that are sensitive to the humidity of the grass the elements of which are arranged opposite one another inside the tunnel and are supplied electrically (80). The at least a pair of sensitive elements (10-11, 50-51, 60-61) generates a detecting signal (IR1-IR3) when a quantity of wet grass covers the pair of sensitive elements (10-11, 50-51, 60-61) so as to form an electric path between the sensitive elements of the pair ( Fig. 3 ).</p> |
