DE102008002580A1 - Method for calculating a driving route, method for controlling a drive and device - Google Patents

Abstract

The invention relates to a method for calculating a driving route for a vehicle, wherein, starting from a starting position, a driving route on a digital map is calculated to a destination position, wherein at least one driving mode of the vehicle is taken into account in the calculation of the driving route.

Description

The The invention relates to a method for calculating a driving route according to claim 1, a method for controlling a drive according to claim 14 and a device for carrying out the method according to claim 16th

State of the art

in the State of the art are various embodiments for calculating a driving route for a vehicle with the help of a navigation device known. Usually will between a starting point and a destination point a route to a predetermined parameter, for example, a shortest one Selected route or a fastest route.

The The object of the invention is an improved method for calculating a travel route and an improved device.

Disclosure of the invention

The The object of the invention is achieved by the method according to claims 1 and 14 and by the device according to claim 15 solved.

Further advantageous embodiments of the invention are in the dependent claims specified.

One Advantage of the described method is that in the Determination of the driving route takes into account the drive type of the vehicle becomes. This offers the advantage that depending on the existing drive the vehicle different driving routes can be beneficial and this then selected become. For example, a vehicle may have a gasoline engine, a Gas engine, a diesel engine, an electric motor, a hybrid engine with a gasoline or diesel engine and an electric motor or a Have hydrogen engine. In addition, a vehicle can only one Gas or hydrogen engine have. The vehicle can also others Have drive types.

Depending on the existing drive can advantageous in relation to predetermined parameters different routes be. These are adapted to the respective drive.

In a further embodiment can be from an operator at least one of two existing Drive types for the calculation of the driving route are formed.

In a further embodiment will for the Calculation of the route one simultaneous and / or one sectionwise Operation of two types of drives considered. In this way can be an optimization of the route for the existing drive types considered become.

In a further embodiment Be informed about the simultaneous or sectional operation of the two types of drives output or the two drives are determined according to a determined optimal operation simultaneously or in sections for driving of the vehicle. This way is an optimized Choice of route and optimized operation of the two drives allows. Dependent from the chosen one embodiment can as a parameter for the calculation of the route an optimized energy consumption and / or optimized pollutant emissions are used. To this Way, an optimized route can be adapted to the one or the existing ones Drives and optimized energy consumption and optimized Pollutant emissions calculated become.

Farther can for an optimization of the route takes into account the type of energy available become. For example, you can given quantities of different types of energy in the calculation the route taken into account become.

moreover can be used as a parameter for the calculation of the driving route energy recovery depends on available considered stationary drive become. In addition, you can information about to be observed parameters of a busy area, in particular a maximum energy consumption, the type of energy to be consumed or prescribed pollutant limit values in the calculation of Travel route taken into account become. It can For example, areas with mandatory zero pollutant emissions the electric drive are driven, after leaving the Nullschadstoffausstoßgebietes again an internal combustion engine can be used to drive the vehicle can.

In a further embodiment become predetermined quantities of at least two different types of energy for the Calculation of the route taken into account. It can be a vote of an optimized route on the existing Quantities of energy types performed become.

In a further embodiment is an energy recovery as a parameter considered by a drive. Thus, for a longer driving distance less energy needed if greater energy recovery possible on this route is.

In a further embodiment Be informed about the nature and manner of optimal operation, at least one Drive of the vehicle, which determines the calculation of the vehicle were taken into account in the control of the drive. Thus, the Drive can be controlled optimally.

Brief description of the drawings

1 shows a schematic representation of a vehicle,

2 shows a schematic representation of a road map with a digital road network, and

3 shows a schematic sequence for carrying out the method.

Embodiments of the invention

1 shows a schematic representation of a vehicle 1 that a device 2 for calculating a driving route in the form of a navigation device. The navigation device 2 is in one embodiment with a controller 3 connected. There is also a data store 4 provided with the device 2 and / or the controller 3 connected is. In addition, a first drive 5 , Depending on the selected embodiment, a second drive 6 to drive the vehicle 1 intended. The first and / or the second drive 5 . 6 communicate with a powertrain, the wheels of the vehicle 1 drives. The first and the second drive 5 . 6 are connected to the control unit via a control line 3 in connection. Depending on the selected embodiment, only one drive or more than two drives can be provided. In addition, several energy sources can be available for one drive type. For example, an internal combustion engine can be operated with gasoline or gas.

The device 2 has an output means, for example in the form of a display 7 and an input means, for example in the form of a keyboard 8th on. The device 2 has a computing unit and a program for calculating a driving route, for example in the data memory 4 is stored. In addition, in the data memory 4 filed a digital road map. Furthermore, the device has 2 via a location system, such as a GPS system 9 , In addition, in the data memory 4 technical characteristics of the drives 5 . 6 stored. These include, for example, the torque curve, energy consumption or pollutant emissions. The torque curve, the energy consumption and the pollutant emissions can be stored in the form of maps depending on the speed and / or the speed.

The first drive 5 stands with a first energy reservoir 11 and the second drive 6 stands with a second energy reservoir 10 in connection. In the first and in the second energy reservoir 11 . 10 are measuring instruments 12 . 13 associated with which the level or the energy content of the energy reservoir 10 . 11 directly or via the control unit 3 to the device 2 can be transmitted. In the embodiment in which the first drive 5 is formed in the form of an internal combustion engine, the first energy reservoir is a fuel tank for gasoline, diesel or gas. The second drive 6 is designed for example in the form of an electric motor, so that the second energy reservoir 10 is formed in the form of a battery. The two drives can be designed as different combinations of drive types.

In the embodiment in which the first drive 5 is designed in the form of an internal combustion engine for hydrogen, is the first energy reservoir 11 designed as a hydrogen tank.

The control unit 3 controls the drives 5 . 6 for moving the vehicle in response to predetermined operating parameters such as the speed of the drives 5 . 6 or a driver's request using control methods stored in the data store 4 are stored. In a further embodiment form, the control unit takes into account 3 Information and / or control instructions provided to the control unit 3 from the device 2 to provide.

The device 2 provides functions of a navigation device, in particular a location determination and a route planning ready. The device has this 2 via a location system 9 , which is formed for example in the form of a GPS system. In addition, the device is 2 a digital map available in the data store 4 is stored. Using the digital map and specifying a start position and a target position, the device can 2 determine a driving route depending on preset parameters. The following parameters, for example, can be used as predefined parameters: Fastest distance; shortest route; Route with the lowest energy consumption; Route with the lowest consumption of a first type of energy; Route with the lowest pollutant emissions; Track with maximum energy recovery; Route where energy recovery is taken into account in the calculation of energy consumption; Distance where areas with predefined emission limits are avoided; Distance, at the given parameters to be respected such. B. Pollutant emissions, energy consumption, prescribed drive, maximum speed, maximum Pollutant emissions, in particular soot emissions are respected or taken into account. In addition, a combination of the predefined parameters can also be selected automatically for the calculation of a driving route or by an operator, for example via the input means 8th be entered. The start position and the destination position can also be accessed via the input means 8th be entered. In addition, the starting position can be equated with the current position of the vehicle. The device 2 stand the technical characteristics of the available drive types 5 . 6 available. Furthermore, the device 2 the amount of available energy over the first and second level sensors 12 . 13 to capture. Furthermore, areas with predetermined emission limits and / or stored for a given type of drive in the digital map.

moreover contains the digital map information about the elevation of the road network, which is important in energy recovery, for example. For example, a track with a slope for energy recovery using an electric motor that also serves as a generator can be used.

In the described embodiment, the first drive 5 an internal combustion engine for gasoline or diesel. The second drive 6 represents an electric motor, which additionally has the function of a generator in overrun operation. Thus, in overrun operation, the electric motor can be used as a generator to recover energy and the second energy reservoir 10 , which is designed in the form of a battery to recharge. Depending on the chosen embodiment, one of the two drives 5 . 6 be designed as a hydrogen engine. The associated energy reservoir is then designed accordingly as a hydrogen storage.

moreover can the digital card data over the expected possible Traffic flow included. The number of existing traffic lights and / or the average speed on the corresponding road sections be stored.

2 shows a schematic representation of a section of a digital map, the streets are shown in the form of straight lines. In the form of points branches, junctions, intersections or points of importance are shown. In the illustrated embodiment, a starting point S for the start of the route to be calculated is shown. In addition, a destination Z is shown as a destination for the route to be calculated. Different driving routes can be chosen between the starting point and the destination point. In this case, for example, information about the length, the permissible speed, the route topology, the number of traffic lights, the type of permissible drives and / or limits for the sections, for example a maximum energy consumption, for at least part of the sections. a maximum pollutant emissions, etc. stored.

at the determination of the route from the starting point S to the destination point Z is based on a parameter for the driving route is a driving route, taking into account the type of drive of the vehicle.

3 shows a schematic representation of a program sequence for carrying out the method. At the first program point 100 the method is started and a start position S and a target position Z are entered or selected. At a following program point 110 captures the device 2 the existing drive and technical characteristics of the existing drive types. In addition, the information about the available drive and / or the type of drive used by the controller 3 to the device 2 be handed over. The properties can be taken into account, for example, energy consumption, pollutant emissions, the amount of energy available for the drive type or an individually allocatable value factor. Using the value factor, the user can set a preferred drive type in the presence of multiple drive types. Thus, for example, in a patchy network for the power supply of a particular type of drive another type of drive be preferred. This is particularly advantageous in the case of electric motors as drive type if the network of charging stations or the network of the service station for replacing the batteries is low. The digital map may also contain information about the location of service stations for various types of energy, such as gasoline, diesel, electrical charging stations, battery replacement, gas filling station or hydrogen refueling station.

At program point 120 a parameter to be optimized is selected for the determination of the driving route. The following parameters can be considered individually or in combination with different values: energy consumption of the different types of energy, total energy consumption, energy recovery, pollutant emissions, torque output, etc. Depending on the chosen embodiment, different parameters for the optimization or for the different sections or areas Compliance be chosen. For example, when planning the route, an area G having a limit value to be observed may be taken into account. For example, the area G, which vice with a dashed line ben, prescribe a specific type of drive or set a maximum pollutant emissions.

At the following program point 130 determines the device 2 desired or to be followed regulations for the planning of the route. The requirements to be met may be areas G with prescribed types of propulsion or prescribed pollutant limit values, a network of supply stations for the different types of energy, etc.

At a following program point 140 Information about the supply of available energy types of the existing drives is queried.

At the following program point 150 a travel route between the starting position S and the target position Z is determined taking into account the predetermined parameter to be optimized. Subsequently, at a program point 160 the route is spent. The output can, for example, by a representation on the display 7 respectively. In addition, at a following program point 170 the device 2 Control information to the control unit 3 give up to the drives 5 . 6 to operate in the desired manner. The control parameters can be continuous depending on the position of the vehicle to the controller 3 be delivered. In this case, for example, the type of drive to be used, the amount of pollutant emissions and / or the amount of energy consumption can be specified.

If, for example, the distance with the lowest energy consumption between the starting point S and the target point Z is predetermined, wherein the limit values of the area G can be maintained, then in the illustrated embodiment the 2 determines the following route that leads from the starting point S via the first point P1, the second point P2, the third point P3 to the destination point Z. During the journey within the area G, the limits to be observed by the area G are observed. For example, only a certain type of drive, for example the electric motor, may be permitted in region G. Thus, the vehicle is operated in the area G only with the electric motor. In addition, in area G, for example, the maximum pollutant emissions per kilometer can be determined. Thus, during transit through the area G, the drive mode (s) are operated in such a way that the maximum emission of pollutants per kilometer is maintained. Furthermore, for example, for the operation of two drive data, a percentage distribution of the drive work to be performed on the two types of drive can be determined as a function of the selected travel route and / or of the selected position.

aid of the described method, the drive type can be selected by means of an option menu of the vehicle can be selected automatically or by a user. For example, a hybrid drive can be selected. Thus, the existing drive type for takes into account the calculation of the route to optimize a parameter become. In addition, using the method described an optimal Use of existing drives can be calculated and this information to the control unit dependent on the control of the drives be predetermined by the position of the vehicle. Furthermore, can the route in dependence from the available standing different torque ranges of different Drive types considered become. In this case, in particular, a mean average speed of a section of the route when planning the route become. Thus, overall, an optimized routing for the determination provided the route.

Claims (15)

Method for calculating a driving route for a vehicle, starting from a starting position, a driving route on a digital map is calculated to a target position, where at the calculation of the driving route at least one drive of the vehicle considered becomes. The method of claim 1, wherein one of at least two existing drive types via a Input for the calculation of the route can be selected. The method of claim 1, wherein at least two Drive types for simultaneous and / or sectional operation in the calculation the route taken into account becomes. The method of claim 3, wherein the travel route with information about a simultaneous or sectional operation of the two types of drive output or the two drives to drive the vehicle accordingly be controlled individually or in sections individually. Method according to one of claims 1 to 4, wherein as drive types at least two types of the following group are provided: electric motor, internal combustion engine, Hybrid engine with electric, combustion engine and / or hydrogen engine. Method according to one of claims 1 to 5, wherein as a parameter for the Calculation of the route uses energy consumption and / or pollutant emissions becomes. Method according to one of claims 1 to 6, whereby the type of energy to be consumed is taken into account as a parameter for the calculation of the driving route. Method according to claim 7, wherein as fuel type liquid fuel, Gas, electrical energy or hydrogen is considered. Method according to claim 8, wherein for the calculation the driving route predetermined amounts of different types of energy considered become. Method according to one of claims 1 to 9, wherein as a parameter for the Calculation of the driving route energy recovery by the drive considered becomes. Method according to one of claims 1 to 10, wherein data for the digital road network are stored, the parameters to be observed, in particular energy consumption, Type of energy consumed or emission limit values and wherein the parameters to be kept in the calculation of the route considered become. Method according to one of claims 1 to 11, wherein as a parameter predetermined quantities of available energy types considered become. Method according to one of claims 1 to 12, wherein technical Characteristics of the at least two drives are stored, and where the technical characteristics in the calculation of the route considered become. Method for controlling at least one drive a vehicle, wherein a driving route and information about the Use of the drive is determined according to one of claims 1 to 13, wherein the information in the control of the drive during the Driving the calculated route is taken into account. Device with a digital map, with one Memory, with a computing unit for performing a method according to one of the claims 1 to 14.