DE102009053982A1 - Consumption-optimized route calculating system for motor vehicle, has computing unit calculating s consumption-optimized route by using vehicle individual and/or driver individual consumption-relevant data of storage unit - Google Patents

Abstract

The system (4) has a position determining unit (8) i.e. global positioning system (GPS) receiver, for determining a current position of a motor vehicle (2). A traffic information receiver (10) i.e. traffic message channel (TMC) receiver, receives current traffic information. A storage unit (12) for storing of vehicle individual and/or driver individual consumption-relevant data is connected to a computing unit (6) in a signal-conducting manner. The computing unit calculates a consumption-optimized route by using the vehicle individual and/or driver individual consumption-relevant data. An independent claim is also included for a method for calculating consumption-optimized route of a motor vehicle.

Description

The The invention relates to a system for calculating a consumption-optimized Route of a motor vehicle, a suitably equipped motor vehicle and a method for calculating a consumption-optimized route. The system includes a position receiver, a traffic information receiver and an arithmetic unit, by means of which a route to a destination is calculable.

such Navigation systems are known in the art. The well-known Navigation systems calculate in their simplest form Specifying a start location and a destination a route between Place of departure and destination. More advanced systems can use different routes Options selected eg "shortest route" or "fastest" Route".

Navigation systems, in a motor vehicle, such as a person or Commercial vehicle are used, regularly have a position determination unit on, usually one GPS unit. With the help of the position determination unit of the Starting location and the current position while driving are determined possibly also the current speed. With the help of this information can Navigation systems Route instructions depending on the current Position and possibly speed to a driver of the motor vehicle submit. More advanced known systems have receiving units to receive current traffic or congestion information. These Information is either displayed and / or left to the driver in the calculation of a proposed by the navigation system route one. The traffic or congestion information is about dynamic, time-variable Information that takes into account when calculating the route become. Often is therefore a routing option that incorporates such dynamic data as "dynamic Route ".

Also one as "ecological Route " Route option between the shortest and fastest route is settled, is known. there is usually proposed a static route, the z. Legs well-developed shorter Federal road across from recommends a motorway to reduce consumption in this way.

Of the road traffic as well as the traffic flow are for some time subject of scientific Research. So u. a. physical models for explanation and investigation of traffic events developed. As a suitable Model has emerged a phase model in which different Phases are defined analogous to phases in thermodynamics, such as "freer Traffic "," Synchronized Traffic "and" moving wide traffic jam ". Position and course of the phase transition between the different phases depending on different Variables, such as traffic density, can be compared with the model using this model empirical data in good agreement to be brought. Even the phases themselves have realistic properties on.

On the basis of such or similar models are in the past onboard autonomous traffic condition detection systems been developed, the respective traffic condition, ie "free Traffic "," Synchronized Traffic "or" more moving wide traffic jam ", can recognize by a combined speed-time evaluation.

On In addition, the basis of the traffic phase model are applications such as ASDA / PHOTO has been developed based on a traffic jam from stationary Recognize traffic measurements and distinguish from each other. With the help of ASDA / PHOTO can be a medium speed of motor vehicles be determined in the respective phase state. Furthermore can Predictions are made on the basis of the dynamics in traffic, the one short-term congestion prediction in a section of the route in the area allow the measuring station.

Farther It is known that different motor vehicles in different driving conditions different energy consumptions exhibit. In particular, it is known that motor vehicles with recuperative Systems, mostly hybrid or electric vehicles, in phase "moving wide traffic jam "one have lower energy consumption than motor vehicles without recuperative Systems, usually equipped with classic internal combustion engines motor vehicles.

Last It is known that motor vehicles with warning systems for consumption-optimized driving can be equipped for example, with switching displays or the like.

The However, systems known in the art are not in the Location, consumption-relevant information that the individual motor vehicle and / or relate to an individual motor vehicle driver, in support of the Motor vehicle driver, especially when routing, consider.

task The invention is therefore a system, a motor vehicle and a To improve the method of the type mentioned in that It can specify consumption-optimized individual driving instructions.

The The object of the invention is achieved through a system for calculating a consumption-optimized route of a motor vehicle according to claim 1, a motor vehicle with a corresponding system according to the sibling Claim 5 and a method for calculating a consumption-optimized Route according to the sibling Claim 6.

The inventive system for calculating a consumption-optimized route of a motor vehicle, For example, a passenger car or a truck points first a position receiver for determining the current position of the motor vehicle. Such a position receiver can according to the invention preferably a GPS receiver be, which the position of the motor vehicle by means of satellites in a manner known in the art. It is possible, that the position receiver also determine the current speed of the motor vehicle can.

Of Furthermore, the system has a traffic information receiver for Receiving current traffic information. Such a traffic information receiver can preferably a TMC and / or an RDS receiver, being in the frame the invention also other traffic information receivers are possible, especially regionally usual Systems.

Of Furthermore, the system has a computing unit that is based on the current position of the motor vehicle and an entered Target position can calculate a route, wherein the arithmetic unit both with the position receiver as well as signal-connected to the traffic information receiver is, so that the computing unit according to the invention is adapted to traffic information, the possible ones Regarding routes, to be considered when calculating a route.

According to the invention is the Further provided that the system comprises a memory unit, in which vehicle-individual and / or driver-individual consumption-relevant Data can be stored and / or stored. The storage unit is also signal-conducting connected to the arithmetic unit. The arithmetic unit is adapted to the route using the vehicle-individual and / or to calculate driver-individual consumption-relevant data.

With Help of the system according to the invention it possible for the first time the influences the individual motor vehicle and / or the driver of the motor vehicle to take into account based on this information, a consumption-optimized route to be able to determine.

Individual vehicle Consumption - relevant information can be consumption curves of the individual motor vehicle in different driving conditions, for example, at different speeds, different accelerations and / or different weather conditions.

It is known that the equipment of the individual motor vehicle huge Has influence on its consumption. The driving resistance changes considerably when using different tires, for example, when using from wide tires or in winter when using winter tires. Also, some motor vehicle drivers equip their motor vehicles consumption-relevant accessory components, For example, roof rack systems and the same.

Furthermore can These data change in the course of a motor vehicle life, if, for example the drive of the motor vehicle wears and thereby other friction conditions in Drive prevail. Conversely, it is known that in particular internal combustion engines have to be retracted at the beginning, before the motor vehicle reaches its optimal consumption.

Individual drivers consumption-relevant information, for example, the individual acceleration and / or braking behavior and a distribution of the switching times be the respective driver.

The For example, previously mentioned consumption-relevant information exist in the form of curves or maps for different driving conditions. In conjunction with the traffic information system of the invention thus for the route sections of different routes different expected Determine consumptions and thus for at least two different routes expected different total consumption determine and make a selection of the more fuel-efficient route.

in the Under the invention, it is also conceivable that the system is a most economical Route calculated, in the expected consumption and expected Travel time of different routes are taken into account and weighted into a determination of the appropriate route.

According to a first advantageous development of the system according to the invention, it is provided that the system, preferably the arithmetic unit, is signal-connected to a consumption detection device, wherein the system is designed to store information about the consumption of the motor vehicle in the storage unit. To this It is particularly easy to update information about the vehicle-specific consumption. Furthermore, by taking into account the current consumption of the motor vehicle, an additional differentiation of different phases in the aforementioned sense can be made, if this is not clear from the other available information.

According to one further advantageous embodiment of the invention can be provided be that the system has an on-board detection device the traffic flow, which is adapted to the current and / or prevailing in the present route section To determine traffic flow. This can be done, for example, with the help of physical phase-based traffic flow models happen that the respective traffic condition on the basis of a combined speed-time criterion determine. With the aid of such a traffic flow recognition device can The system has the right information to determine the current consumption be provided, which over the traffic information receiver can be provided because this usually a big one delay and therefore only for removed lying sections reliable consumption forecasts enable.

One first independent The invention relates to a motor vehicle, which with the system according to the preceding Invention equipped in one of the described embodiments is.

One last independent The invention relates to a method for calculating a consumption-optimized Route, where route profiles of at least two alternative routes loaded to the destination, current traffic information at least the respective route are received and vehicle-individual and / or Driver-specific information relevant to consumption are loaded. According to the invention for the at least two alternative routes based on traffic information, the route profiles and the vehicle-individual and / or driver-individual Consumption-relevant information Consumption forecasts created and the more fuel-efficient Route determined.

route profiles in the sense of the invention can information about streets be that the type of street, Speed limits as well as possibly further information, for Example of slopes, Kurvigkeit or the like, may include. With the help of such Information can for track sections the appropriate expected consumption information is retrieved which of the respective route profile and of the corresponding Section of the route prevailing traffic flow, in particular in Meaning of the opening explained Traffic phase model, determine.

According to one first possible Further development of the method according to the invention can be provided that the calculation with changed traffic information and / or modified vehicle-specific and / or driver-specific information relevant to consumption carried out again will and when a change the more fuel-efficient Route the new more fuel-efficient route is determined. This system is due to its dynamic adaptability even better suited to current, changing traffic conditions to react.

According to one further advantageous embodiment of the invention can be provided be that an expected driving time for the at least two alternatives Routes is determined and an economic Route is determined in the consumption forecasts and travel times for the at least two routes weighted flow. This is a compromise between consumption and time with different prioritizations To be received.

According to one other possible Further development of the invention provides that the more fuel-efficient and / or the more economical route be proposed.

The present invention is applicable both to motor vehicles with internal combustion engines, as well as for Motor vehicles with hybrid or electric motors applicable.

The Invention is based on an embodiment described. The single FIGURE shows a motor vehicle with the system according to the invention.

The motor vehicle according to the invention 2 has a system according to the invention 4 on, which allows a consumption-optimized route calculation.

Centerpiece of the system 4 is an arithmetic unit 6 , which is designed to calculate a consumption-optimized route and vehicle navigation.

The arithmetic unit 6 is with a position determination unit 8th as well as with a traffic information receiver 10 signal-conducting connected. The position determination unit 8th may preferably be designed as a GPS receiver, the traffic information receiver 10 preferred as TMC receiver.

Furthermore, the arithmetic unit 6 with egg ner memory unit 12 signal-conducting connected, in which vehicle-individual and / or driver-individual consumption-relevant information is stored. The arithmetic unit 6 is designed to the storage unit 12 to rewrite with changed values. The previous values can be overwritten or supplemented, or the new values can be stored in memory areas other than those already occupied.

The system according to the invention 4 moreover has a traffic flow recognition device 14 on, with the help of which the motor vehicle 2 bordautonom can determine the prevailing traffic condition.

In one possible embodiment, the traffic flow recognition device 14 as an algorithm in the arithmetic unit 6 be stored when the arithmetic unit 6 can access both information of a timer, as well as information about the current vehicle speed, for example by a coupling with a speedometer as well as by a speed measurement via the position detection device 8th ,

In the storage unit 12 depending on the type of vehicle vehicle-specific attributes, such as engine, equipment, etc. as well as dependent consumption curves or consumption maps are stored.

The Consumption curves or consumption maps can be determined, for example, by that every motor vehicle, with the system according to the invention equipped, for example, before delivery or even to certain Time during operation, is measured at a test bench and the resulting consumption curves or consumption maps in the Memory unit to be stored.

The Consumption curves or consumption maps are preferably such designed that both different speed, than also different acceleration values are shown.

Preferably, the consumption curves or consumption maps are adaptable by real consumption of the motor vehicle, which, for example via a motor vehicle own consumption measuring device 16 be determined, thereby influencing both influences on changes of the motor vehicle 2 are detectable, as well as influences, which are due to the driver.

The Consumption curves or consumption maps are in the illustrated embodiment created and categorized according to the phases described above. Such categories can additionally or alternatively done according to speed classes and / or according to street categories. Preference is given to a combination of all of the aforementioned information, whereby the precision the forecast of the expected consumption increases.

In the illustrated embodiment, the method according to the invention is realized as follows:
The driver of the motor vehicle 2 enters the navigation system 4 a destination. The current position of the motor vehicle 2 determines the navigation system 4 with the help of the position receiver 8th , In a manner known per se, the arithmetic unit determines 6 at least two different alternative routes from the current position to the destination.

The arithmetic unit 6 divides the at least two alternative routes into sections which, by virtue of their nature, ie, for example, type of road, permissible maximum speed, gradient and / or curvature and, if appropriate, more recent, via the traffic information receiver 10 received traffic information for sections fall into the same consumption categories. Depending on the previously mentioned values, the appropriate fuel consumption curves or consumption maps are called up for the respective route sections and expected consumption for the route sections is calculated. From these consumptions, the expected total consumption is determined. The consumptions of the at least two alternative routes are compared with one another and the more fuel-efficient route is determined.

An adaptation of the more fuel-efficient route can be achieved by the traffic flow recognition device 14 with the help of which the prevailing traffic conditions in the subsequent section can be included in the calculation.

In Another embodiment may be provided that an economic Route is calculated, both the expected consumption as also determined the expected travel times and weighted both in a determination of a more economical route incorporated. The weighting of travel time and consumption can be specified or be specified by the driver. This can be done, for example, by default one for the consumer acceptable extra time done by the driver is accepted.

The fuel consumption curves or consumption maps are determined by the respective driving or driving behavior, the respective surrounding traffic and learn changes to the motor vehicle by the stored consumption curves or consumption maps are adapted to deviations from the determined values. In this way, the predictions can be improved over time.

Of Furthermore, it can be provided that the consumption information the specific individual motor vehicle user-specific also as personalized data in a database, for example via a Internet portal, can be managed. So is an exchange possible with other user data, around for certain routes to make more accurate forecasts. The transfer can over Communication means of the motor vehicle directly to the user portal or over Detours, for example, reading the memory via USB, be made.

In addition, with the help of such a database in the navigation system 4 updated maps or route information.

2

motor vehicle

4

system

6

computer unit

8th

Position Determination Entity

10

Traffic information receiver

12

storage unit

14

Traffic flow detection device

16

Consumption measuring device

Claims (9)

System for calculating a consumption-optimized route of a motor vehicle ( 2 ), with - a position receiver ( 8th ) for determining the current position of the motor vehicle ( 2 ), - a traffic information receiver ( 10 ) for receiving current traffic information, - one with the position receiver ( 8th ) and the traffic information receiver ( 10 ) computer-connected computing unit ( 6 ) for calculating the route on the basis of the available information about position and traffic information, characterized in that a memory unit ( 12 ) for storing vehicle-individual and / or driver-individual consumption-relevant data signal-conducting with the arithmetic unit ( 6 ), wherein the arithmetic unit ( 6 ) is adapted to the consumption-optimized route using the vehicle-individual and / or driver-individual consumption-relevant data of the memory unit ( 12 ) to calculate. System according to claim 1, characterized in that the system ( 4 ), preferably the arithmetic unit ( 6 ), with a consumption detection device ( 16 ) is signal-conducting connected, wherein the system ( 4 ) is adapted to be stored in the memory unit ( 12 ) Information on the consumption of the motor vehicle ( 2 ). System according to claim 1 or 2, characterized in that in the memory unit ( 12 ) Consumption characteristics, preferably depending on different driving conditions, stored and / or can be stored. System according to one of claims 1 to 3, characterized in that the system ( 4 ) a traffic flow recognition device ( 14 ), which is designed to determine the current and / or prevailing in the upcoming route section traffic flow. Motor vehicle with a system ( 4 ) according to one of the preceding claims. Method for calculating a consumption-optimized route, preferably with a system ( 4 ) according to one of claims 1 to 4, wherein route profiles of at least two alternative routes are loaded to the destination, current traffic information of the alternative routes are received, characterized in that vehicle-individual and / or driver-individual consumption-relevant information is loaded and for the at least two alternative routes on the basis the traffic information, route profiles and the vehicle-individual and / or driver-individual consumption-relevant information consumption forecasts are created and the more fuel-efficient route is determined. Method according to Claim 6, characterized that the calculation changed at Traffic information and / or modified vehicle-individual and / or driver-specific information relevant to consumption carried out again will and when a change the more fuel-efficient Route the new more fuel-efficient route is determined. Method according to claim 6 or 7, characterized that is an expected travel time for the at least two alternative Routes is determined and an economic Route is calculated in the consumption forecasts and travel times the at least two routes weighted flow. Method according to one of claims 6 to 8, characterized in that the more fuel-efficient and / or the more economical route vorla be gene.