| 摘要 |
A method for monitoring and navigating a vehicle with electric drive towards a target with an off-line navigation device, in which a table is prepared and stored with data related to the vehicle when moving with a predetermined speed and under a predetermined load; storing in the memory the consumption of the vehicle when it takes a unity distance along a horizontal road with the predetermined speed; then storing corrected consumption values as a function of positive or negative angles of inclination of a road section of unity length that represents the ratio of experimentally determined consumption values of the vehicle at any given angle of inclination to the consumption along the horizontal road of unity length; storing map data also including the altitude and/or steepness information; then after the start of the vehicle monitoring in given time intervals the momentary storage capacity of the battery of the vehicle; dividing the remaining route leading to the target into a plurality of road sections so that each road section has a respective uniform angle of inclination, and in case of each of said sections and based on the stored data the respective weighted costs associated with the section is calculated; the weighted costs are summarized to the remaining length of the route whereby the expected consumption of the vehicle till reaching the target is determined, and comparing the expected consumption with the measured available capacity of the battery, and if the expected consumption is higher than the available capacity of the battery, warning the driver of the vehicle.˙ |
