Route planning device and route planning system

A route planning system, comprising:

• a route plan transmission device;
• and
• a route plan reception device installed in a moving object equipped with a motor driven with a battery, wherein:
• the route plan transmission device comprises:
• a minimum-cost route calculation unit that calculates costs of a plurality of road links included in map information and calculates a minimum-cost route achieving a smallest sum of the costs, which extends from a current position of the moving object to a destination;
• a search unit that searches through the map information for a plurality of facilities located near the minimum-cost route, where the battery can be charged or replaced;
• a guided route calculation unit that sets a waypoint on the minimum-cost route via which the moving object can be guided to each of the plurality of facilities and calculates in advance a guided route from the waypoint to the each of the plurality of facilities and a first power requirement indicating an amount of power required to travel through the guided route;
• and
• a first communication unit that transmits to the route plan reception device first information indicating the waypoint calculated by the guided route calculation unit, the each of the plurality of facilities, the guided route and the first power requirement and receives second information from the route plan reception device;
• and
• the route plan reception device comprises:
• an input unit via which a user input is entered by a user;
• a position calculation unit that determines the current position by using a sensor installed in the moving object;
• a second communication unit that receives the first information transmitted via the first transmission unit and transmits to the route plan transmission device the second information indicating the destination entered by the user via the input unit and the current position;
• a facility designating unit that designates a facility, among the plurality of facilities, as a target facility to which the moving object is to be guided, based upon third power requirements each calculated by adding a second power requirement, indicating an amount of power required to allow the moving object to travel from the current position on the minimum-cost route to the waypoint, to the first power requirement having been calculated in advance and remaining power in the battery;
• and
• a display unit at which a position of the each of the plurality of facilities and the guided route corresponding to the target facility are displayed.