| 摘要 |
<p>The invention relates to an identification device (3) for an automotive vehicle that comprises : at least one first electronic unit (15) for realising at least one comfort function; at least one second electronic unit (17) for realising at least one base function; a rechargeable electric source (S1) and a backup electric source (S2) for supplying said electronic units (15, 17). The device further includes a unit (25) for controlling the charge state of the rechargeable source, and a switching unit (27) having first (31) and second (33) supply inputs respectively connected to the rechargeable source (S1) and to the backup source (S2), a control input (35) connected to a related output (29) of said control unit (25) and a supply output (37) connected to said second electronic unit (17), wherein the switching unit (27) includes a switch (39) for insulating said backup source (S2) when the charge state of the rechargeable source is higher than or equal to a predetermined threshold, and for connecting said backup source (S2) to said second electronic unit when the charge state of said rechargeable source is lower than a predetermined threshold in order to supply the second unit (17) for realising the base functions.</p> |
