摘要 |
<p>The detection unit (1) has an inclinometer (5) that can measure variation of the absolute angle relative to the vertical line of reference surface of the housing (2), a portion of housing and a group of internal functional elements (3), and can deliver a measuring signal that can be exploited by the detection unit. An integrated circuit (8) stores an angular reference position relative to the vertical line. The integrated circuit compares the difference between the value measured by the inclinometer and the reference value, with a threshold value for triggering the signaling to the system.</p> |