Classifications

• • G—PHYSICS
  • G08—SIGNALLING
  • G08G—TRAFFIC CONTROL SYSTEMS
  • G08G1/00—Traffic control systems for road vehicles
  • G08G1/01—Detecting movement of traffic to be counted or controlled
  • G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
• • G—PHYSICS
  • G08—SIGNALLING
  • G08G—TRAFFIC CONTROL SYSTEMS
  • G08G1/00—Traffic control systems for road vehicles
  • G08G1/09—Arrangements for giving variable traffic instructions
  • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
  • G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
  • G08G1/096708—Systems involving transmission of highway information, e.g. weather, speed limits where the received information might be used to generate an automatic action on the vehicle control
  • G08G1/096725—Systems involving transmission of highway information, e.g. weather, speed limits where the received information might be used to generate an automatic action on the vehicle control where the received information generates an automatic action on the vehicle control
• • G—PHYSICS
  • G08—SIGNALLING
  • G08G—TRAFFIC CONTROL SYSTEMS
  • G08G1/00—Traffic control systems for road vehicles
  • G08G1/09—Arrangements for giving variable traffic instructions
  • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
  • G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
  • G08G1/096766—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission
  • G08G1/096791—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission where the origin of the information is another vehicle
• • G—PHYSICS
  • G08—SIGNALLING
  • G08G—TRAFFIC CONTROL SYSTEMS
  • G08G1/00—Traffic control systems for road vehicles
  • G08G1/16—Anti-collision systems
  • G08G1/161—Decentralised systems, e.g. inter-vehicle communication
  • G08G1/163—Decentralised systems, e.g. inter-vehicle communication involving continuous checking

Definitions

• the invention relates to a method for determining a driving strategy as information for the driver of a motor vehicle, in which, in particular, local information of further, in particular preceding motor vehicles is detected by means of a receiving device and information derived therefrom for the motor vehicle driver is provided. Furthermore, the invention relates to a device for carrying out the method.
• Road traffic is one of the most important complex systems of our modern world.
• the complexity levels that arise here range from individual actions of individual motor vehicle drivers to local phenomena such as density fluctuations and traffic jams, the choice of route and time of the road users, local and temporal traffic patterns and transregional traffic flows to long-term traffic development and traffic regulation.
• Communication systems between multiple vehicles are designed as an ad hoc network. They are therefore not dependent on any pre-installed network infrastructure and in particular allow the exchange of data in the local or regional environment of a motor vehicle.
• these wireless networks will support traffic-related applications, such as hazard warnings and cooperative driver assistance systems.
• Communication across multiple automobiles opens up a new dimension to the delivery of telematics applications by making data available from systems of preceding vehicles, such as the vehicle's driving situation sensed by sensors or data from camera or radar systems.
• a vehicle-to-vehicle communication device for communication between motor vehicles is generally known from DE 10 2007 053 738 A1, in which the transmitting motor vehicle communicates not only its own data but also information about adjacent motor vehicles.
• US 2005/0225457 A1 describes a technique in which not only the position information of a motor vehicle equipped with the communication device is transmitted, but also the position information of surrounding appropriately equipped motor vehicles picked up by a camera or the like.
• the information is generally displayed by visualization on a display.
• pictograms with an information content such as "congestion hazard” or "construction site” are used for this purpose.
• DE 102 00 883 B4 shows a method for displaying information on a screen, for example that of a navigation device in a motor vehicle.
• assistance systems which should ensure increased ride comfort and increased safety.
• cruise control system also known as “cruise control”.
• Adaptive Cruise Control which also take into account the driving behavior of the immediately preceding vehicle detected by the vehicle's own sensors.
• DE 103 49 434 A1 discloses how such a distance and speed control can be brought into a different mode in stop-and-go situations so as not to jerk constantly and brake. Such methods are based on information that is determined by corresponding sensors of the motor vehicle, in particular at its own speed. An exchange of information between several vehicles is not provided.
• the behavior of a vehicle driving ahead is also detected by sensors.
• DE 10 2007 037 329 A1 describes a method for determining a driving strategy in order to optimize operating costs, in particular fuel consumption. For this purpose, information can be detected by sensors of the motor vehicle and measures for improving the operating state can be displayed. The method is an optimization of various - presumed as expected - parameters that play a role in the choice of route.
• DE 101 30 768 C2 discloses a channel access method for ad hoc radio networks for the exchange of data between motor vehicles.
• DE 197 50 942 A1 discloses a method and a device for determining a driving strategy as information for the driver of a motor vehicle, wherein information of further motor vehicles detected by a receiving device and derived therefrom for the motor vehicle driver information is provided as a signal to reduce the speed.
• DE 100 29 816 A1 relates to a driver-assisting assistance system for optimum driving.
• data for recording one's own driving situation and the preceding traffic situation are included of GPS data for determining the current location of the vehicle and including digital road maps for detecting the local road guidance and an output of computer-assisted determined driving recommendations to the calling system user considered.
• traffic control systems improve the traffic flow on one or more sections, nodes or in the entire network by means of collective influencing.
• the traffic management system's task is to increase traffic safety by reducing the speed variance in the motor vehicle collective and optimally distributing the trips to the available infrastructure.
• Stationary signals and traffic signs serve to implement the switched strategy into visual symbols for the motorists, for example to limit the speed.
• the electronically coupled motor vehicle is oriented with the aid of a computer-controlled image processing system on the preceding motor vehicle.
• a video camera detects a specific pattern at the rear of the front vehicle.
• the computer calculates direction, distance and relative speed and adjusts the following vehicle precisely.
• infrared light sources can generate the pattern, which increases the effort, but also the evaluation reliability. Aside from the high demands placed on the technical safety of such systems, the problem of liability for damage caused by faults also proves to be disadvantageous.
• the invention has for its object to provide a way to simultaneously reduce energy consumption as well as travel times and the risk of accidents and thereby improve the flow of traffic.
• a method for determining a driving strategy is provided as information for the driver of a motor vehicle in which information of further motor vehicles is detected by means of a receiving device and information derived therefrom for the motor vehicle driver is provided, wherein the provision of information comprises at least one recommended action for a recommended speed is determined from the average speed of several vehicles driving ahead and relevant to the traffic and the desired speed of the motor vehicle.
• the motor vehicle driver thus recognizes the instruction as a real advantage for his driving behavior and will increasingly base his action on the positive experiences that are associated with it.
• the motor vehicle driver In contrast to the car-to-car radio networks known hitherto, not only status data are transmitted, but concrete optimization suggestions derived therefrom, which offer the expected benefits to the motor vehicle driver, if he follows them.
• the energy consumption is significantly reduced in a surprisingly simple manner and also improves the flow of traffic, at the same time the risk of accidents decreases.
• the derived information can be transmitted to an assistance system, for example an adaptive cruise control.
• v emp min (v d ⁇ s , ⁇ v d ⁇ S + (1 ⁇ ) v avg )
• Vd ⁇ s desired speed, in particular depending on physical aspects and safety aspects
• v avg average speed of preceding vehicles
• ⁇ compensation parameter.
• the method already proves to be helpful with a single preceding vehicle.
• the information is recorded by a plurality of motor vehicles, in particular at least five preceding vehicles, so as to avoid possible congestion. Even with a small number of detected motor vehicles, the inventive method leads to a more comfortable and stress-free driving without unnecessary braking and acceleration operations.
• the compensation parameter could be determined dynamically based on acquired information, in particular on the basis of empirical values. However, it has proved particularly useful proved, if as compensation parameter ⁇ a value between O and 1, but in particular between 1/2 to 2/3 is determined.
• a particularly advantageous embodiment of the method according to the invention is achieved in that the optimum speed is determined from measured values of the speed of the own motor vehicle as well as the received information of the speed of several preceding motor vehicles.
• the risk of stowage is reduced by the motor vehicle driver being presented with a speed recommendation at a reduced speed, which already takes into account the time change of the traffic situation, in particular of the vehicles in front, with regard to their density, average speed or local distribution.
• the deviation of the proposed driving speed from the self-desired is lower.
• the transmitted information at least the position and speed of a respective preceding motor vehicle include so as to draw conclusions on the change of the future traffic situation on the one hand, and the corresponding own optimal speed on the other.
• the speed recommendation determining factor in turn may be dependent on the average speed.
• the method according to the invention works without a stationary infrastructure, because all relevant information is captured by the motor vehicles involved. A meaningful supplement is then realized, if in addition also information of stationary or local sources of information is recorded, so also further available knowledge about the traffic situation in the calculation of the optimal speed to be able to involve.
• motor vehicles that are not equipped with the requirements for car-to-car information transmission can also be detected in this way.
• the determined recommended speed is visualized on a display and thus can be read directly by the driver as an amount.
• the deviation of the optimal speed from the current speed can be visualized, in particular a multi-colored representation facilitates the readability.
• additional or alternative acoustic indications are conceivable.
• the thus determined recommended speed can also be transferred to an assistance system.
• the information provided to the motor vehicle driver can be transmitted according to a particularly meaningful modification to other motor vehicles, so that not only the current, but also the expected traffic situation can be taken into account.
• the information, in particular derived information are transmitted to other motor vehicles by means of a transmitting unit, so that the motor vehicles located in the vicinity can also include the derived information in their own information provision.
• devices are suitable which not only provide information about the corresponding vehicle equipment by means of visually perceptible markings or instructions, but also about the current active participation in the system.
• the method is not limited to motor vehicles. Rather, the method can also be used for the optimization of traffic flows of cyclists, pedestrians and athletes in the exercise of various sports or even by watercraft are used.

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• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Life Sciences & Earth Sciences (AREA)
• Atmospheric Sciences (AREA)
• Chemical & Material Sciences (AREA)
• Analytical Chemistry (AREA)
• Traffic Control Systems (AREA)
• Control Of Driving Devices And Active Controlling Of Vehicle (AREA)

Applications Claiming Priority (2)

Publications (2)

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• 2008
  • 2008-09-12 DE DE102008047143A patent/DE102008047143B4/de not_active Expired - Fee Related
• 2009
  • 2009-09-04 EP EP09776125A patent/EP2335233B1/fr not_active Not-in-force
  • 2009-09-04 WO PCT/DE2009/001242 patent/WO2010028626A1/fr active Application Filing
  • 2009-09-04 AT AT09776125T patent/ATE555463T1/de active
  • 2009-09-04 US US13/063,776 patent/US8666629B2/en not_active Expired - Fee Related

Non-Patent Citations (1)

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