| 摘要 |
An apparatus is described for providing navigation instructions in a motor vehicle, comprising at least one processing module (12) associated with memory means (16) and user interface means (11) configured to supply said navigation instructions (N) on the basis of at least one road route (P; P 1 ... P n ; P u ) between a first position (x 1 ) and a second position (x 2 ) selected from among one or more routes (P; P 1 ... P n ; P u ) constructed between said first position (x 1 ) and second position (x 2 ) selecting road route segments (T i ) stored in said memory means (16) based on a procedure for minimising a cost associated with one or more routes (P; P 1 ... P n ; P u ), said memory means (16) comprising stored road route parameters (C, F) employable by said processing module (12) to evaluate information on vehicle fuel or energy consumption associated with said one or more constructed routes (P; P 1 ... P n ; P u ),
according to the invention, said memory means (16) store said road route parameters (C, F) in a database element (13, 14, 15) comprising road route segments or points (T i ), consumption conditions (C(T i )) associated with said segments or points (T i ) and respective corresponding consumption penalisation factors (F(T i )),
said processing module (12) is configured to construct said at least one road route (P; P 1 ... P n ; P u ) between a first position x 1 and a second position x 2 by a cost minimisation procedure that provides selecting among said segments or points (T i ) in said database element (13, 14, 15) the segments or points for constructing the road route (P; P 1 ... P n ; P u ) minimising a cost determined by the corresponding consumption penalisation factors (F(T i )).
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