WO2009156217A1

WO2009156217A1 - Method for calculating a journey route, method for controlling a drive mechanism, and apparatus

Info

Publication number: WO2009156217A1
Application number: PCT/EP2009/055114
Authority: WO
Inventors: Stefan Rychlak
Original assignee: Robert Bosch Gmbh
Priority date: 2008-06-23
Filing date: 2009-04-28
Publication date: 2009-12-30
Also published as: DE102008002580A1

Abstract

The invention relates to a method and an apparatus with a digital map, with a memory and with a computation unit, for calculating a journey route for a vehicle, wherein a starting position is taken as a basis for calculating a journey route on the digital map to a destination position, with at least one drive mechanism type for the vehicle being taken into account when calculating the journey route.

Description

METHOD FOR CALCULATING A DRIVE ROUTE, METHOD FOR CONTROLLING A DRIVE AND DEVICE

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 an apparatus for carrying out the method according to claim 16.

State of the art

In the prior art, various embodiments for calculating a driving route for a vehicle by means of a navigation device are known. As a rule, a driving route is selected between a starting point and a destination point according to a predetermined parameter, for example a shortest route or a fastest route.

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

Disclosure of the invention

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

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

An advantage of the method described is that the drive type of the vehicle is taken into account when determining the travel route. This offers the advantage that gig different driving routes can be advantageous from the existing drive of the vehicle and then selected. For example, a vehicle may include 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 hydrogen engine. In addition, a vehicle may only have a gas or hydrogen engine. The vehicle may also have other types of propulsion.

Depending on the existing drive type, different driving routes may be advantageous in relation to predefined parameters. These are adapted to the respective drive.

In a further embodiment, at least one of two existing drive types for the calculation of the driving route can be formed by an operator.

In a further embodiment, for the calculation of the travel route a simultaneous and / or a sectionwise

Operation of two types of drives considered. In this way, an optimization of the route for the existing drive types are taken into account.

In a further embodiment, information about the simultaneous or sectional operation of the two types of drive is output or the two drives are driven in accordance with a determined optimal operation simultaneously or in sections for driving the vehicle. In this way, an optimized choice of the route and an optimized operation of the two drives is possible. Depending on the selected embodiment, an optimized energy consumption and / or an optimized emission of pollutants can be used as parameters for the calculation of the driving route. In this way, an optimized route can be adapted to the existing drive (s) and an op- calculated energy consumption and optimized pollutant emissions.

Furthermore, the type of available energy can be taken into account for optimizing the route. For example, given quantities of different types of energy can be taken into account when calculating the driving route.

In addition, an energy recovery depending on the available drive can be taken into account as a parameter for calculating the travel route. In addition, information about parameters to be maintained in a traveled area, in particular a maximum energy consumption, the type of energy to be consumed or prescribed pollutant limit values can be taken into account in the calculation of the driving route. In this case, for example, areas with prescribed zero pollutant emissions can be driven by means of the electric drive, whereby after leaving the zero pollutant discharge area, an internal combustion engine can again be used to drive the vehicle.

In a further embodiment, predetermined quantities of at least two different types of energy are taken into account for the calculation of the driving route. In this case, a tuning of an optimized driving route to the existing quantities of energy types can be carried out.

In a further embodiment, an energy recovery by a drive is taken into account as a parameter. Thus, less energy may be needed for a longer distance if greater energy recovery on this route is possible.

In a further embodiment, information about the nature and manner of optimum operation, at least one vehicle drive, determined during the calculation of the vehicle is included in the control of the drive considered. Thus, the drive can be optimally controlled.

Brief description of the drawings

FIG. 1 shows a schematic representation of a vehicle,

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

FIG. 3 shows a schematic sequence for carrying out the method.

Embodiments of the invention

FIG. 1 shows a schematic representation of a vehicle 1 which has a device 2 for calculating a driving route in the form of a navigation device. The navigation device 2 is connected in one embodiment to a control unit 3. In addition, a data memory 4 is provided, which is connected to the device 2 and / or the control unit 3. In addition, a first drive 5, depending on the selected embodiment, a second drive 6 for driving the vehicle 1 is provided. The first and / or the second drive 5, 6 are in communication with a drive train which drives wheels of the vehicle 1. The first and the second drive 5, 6 are connected via a control line to the control unit 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 8. The device 2 has an ne arithmetic unit and a program for calculating a driving route, which is stored for example in the data memory 4. In addition, a digital road map is stored in the data memory 4. Furthermore, the device 2 has a location determination system, for example a GPS system 9. In addition, technical characteristics of the drives 5, 6 are stored in the data memory 4. 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 is connected to a first energy reservoir 11 and the second drive 6 is connected to a second energy reservoir 10 in connection. In the first and in the second energy reservoir 11, 10 measuring means 12, 13 are assigned, with which the level or the energy content of the energy reservoir 10, 11 can be transmitted directly or via the control unit 3 to the device 2. In the embodiment in which the first drive 5 is designed 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 a combustion engine for hydrogen, the first energy reservoir 11 is formed as a hydrogen tank.

The control unit 3 controls the drives 5, 6 for moving the vehicle in dependence on predetermined operating parameters such as, for example, the rotational speed of the drives 5, 6 or a driver request by means of control methods which are stored in the data memory 4. In a further embodiment form the control unit 3 information and / or control instructions, which are provided to the controller 3 of the device 2 available.

The device 2 provides functions of a navigation device, in particular a location determination and route planning. For this purpose, the device 2 has a location determination system 9, which is designed, for example, in the form of a GPS system. In addition, the device 2 is a digital map available, which is stored in the data memory 4. By means of the digital map and the specification of a start position and a target position, the device 2 can determine a travel route depending on predetermined parameters. The following parameters can be used, for example, as the following 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. As pollutant emissions, energy consumption, prescribed drive, maximum speed, maximum pollutant emissions, especially 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 entered by an operator, for example via the input means 8. The start position and the target position can also be input via the input means 8. In addition, the starting position can be equated with the current position of the vehicle. The device 2 are the technical characteristics of the available drive types 5, 6 are available. Furthermore, the device 2 can detect the amount of available energy types via the first and the second fill level sensor 12, 13. Furthermore, there are areas in the digital map predetermined pollutant limits and / or stored for a given drive.

In addition, the digital map contains information about the height of the road network, which is of importance, for example, in energy recovery. For example, a track with a slope for energy recovery can be used by means of an electric motor that can be used simultaneously as a generator.

In the described embodiment, the first drive 5 is an internal combustion engine for gasoline or diesel. The second drive 6 is 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 to recharge the second energy reservoir 10, which is in the form of a battery. Depending on the selected embodiment, one of the two drives 5, 6 may be designed as a hydrogen engine. The associated energy reservoir is then designed accordingly as a hydrogen storage.

In addition, the digital map may contain data about the expected possible traffic flow. In this case, the number of existing traffic lights and / or the average speed can be stored on the corresponding road sections.

Figure 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. Between the starting point and You can choose different routes for the destination. 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.

When determining the travel route from the starting point S to the destination point Z, a travel route is calculated on the basis of a parameter for the driving route, taking into account the type of drive of the vehicle.

FIG. 3 shows a schematic diagram 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 input or selected. In a subsequent program item 110, the device 2 detects the existing drive and technical characteristics of the existing drive types. In addition, the information about the available drive type and / or the type of drive used can be transferred from the control unit 3 to the device 2. 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 the case of an incomplete network for supplying energy to a certain type of drive, a different type of drive may 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 can also provide information about the location of service stations for various types of energy, such as gasoline, diesel, electric charging stations. include, battery replacement, gas filling station or hydrogen tank parts.

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

At the following program item 130, the device 2 determines desired or to be complied 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.

In a following program item 140 information about the supply of available energy types of existing drives are queried.

At the following program point 150, a travel route between the start position S and the destination position Z is determined taking into account the predetermined parameter to be optimized. Subsequently, at a program point 160, the travel route is output. The output can be done for example by a representation on the display 7. In addition, in a subsequent program item 170, the device 2 can be control information. Give tionen to the controller 3 to operate the drives 5, 6 in the desired manner. The control parameters can be delivered continuously depending on the position of the vehicle to the control unit 3. 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 route with the lowest energy consumption between the starting point S and the destination point Z is specified, whereby the limit values of the area G can be maintained, the following route is determined in the exemplary embodiment shown in FIG. 2, starting from the starting point S via the first one Point Pl, the second point P 2, the third point P3 leads 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 drive types can be determined as a function of the selected travel route and / or of the selected position.

Using the described method, the drive type of the vehicle can be selected automatically or by a user with the aid of an option menu. For example, a hybrid drive can be selected. Thus, the existing drive type for the calculation of the route can be taken into account for optimizing a parameter. In addition, by means of the described method, an optimal use of the existing drives can be calculated and this information the control unit for controlling the drives depending on the position of the vehicle are predetermined. Furthermore, the travel route can be taken into account as a function of the available different torque ranges of the different drive types. In this case, in particular an average average speed of a section of the route can be taken into account when planning the route. Thus, an optimized routing for the determination of the route is provided overall.

Claims

claims

1. A method for calculating a driving route for a vehicle, wherein, starting from a start position, a route is calculated on a digital map to a destination position, wherein in the calculation of the route at least one drive type of the vehicle is taken into account.

2. The method of claim 1, wherein one of at least two existing drive types can be selected via an input for the calculation of the driving route.

3. The method of claim 1, wherein at least two types of drive for simultaneous and / or sectional operation in the calculation of the travel route is taken into account.

4. The method of claim 3, wherein the driving route is output with information on a simultaneous or sectional operation of the two types of drive or the two drives are driven to drive the vehicle according to simultaneously or in sections individually.

5. The method according to any one of claims 1 to 4, wherein at least two types of the following group are provided as drive types: electric motor, internal combustion engine, hybrid engine with electric, internal combustion engine and / or hydrogen engine.

6. The method according to any one of claims 1 to 5, wherein as parameters for the calculation of the driving route an energy consumption and / or pollutant emissions is used.

7. The method according to any one of claims 1 to 6, wherein the type of energy to be consumed is taken into account as a parameter for the calculation of the driving route.

8. The method of claim 7, wherein as the type of energy liquid fuel, gas, electrical energy or hydrogen is taken into account.

9. The method according to claim 8, wherein predefined quantities of different types of energy are taken into account for the calculation of the driving route.

10. The method according to any one of claims 1 to 9, wherein as a parameter for the calculation of the driving route an energy recovery by the drive is taken into account.

11. The method according to any one of claims 1 to 10, wherein data for the digital road network are stored, the parameters to be respected, in particular energy consumption, type of energy to be consumed or pollutant limit values, and wherein the parameters to be observed in the calculation of the route are taken into account ,

12. The method according to any one of claims 1 to 11, wherein as predetermined parameter quantities of the available types of energy are taken into account.

13. The method according to any one of claims 1 to 12, wherein technical characteristics of the at least two drives are stored, and wherein the technical Eigen- Shafts are taken into account when calculating the route.

14. A method for controlling at least one drive of a vehicle, wherein a travel route and information about the use of the drive according to one of claims 1 to 13 is determined, wherein the information is taken into account in the control of the drive during the driving of the calculated travel route.

15. Device with a digital map, with a memory, with a computing unit for carrying out a method according to one of claims 1 to 14.