System and method for updating a digital map in a driver assistance system
First Claim
1. A system that updates a digital map of a driver assistance system in a vehicle, wherein the digital map contains map data having coordinates and attributes characterizing subregions of an overall region depicted by the digital map, wherein the system comprises:
- a base station; and
a plurality of vehicles, each vehicle having a driver assistance system having;
a memory configured to store map data from at least a portion of the digital map;
a receiver configured to receive updated map data; and
a control unit configured to update the stored map data using the received updated map data;
a navigation receiver configured to ascertain coordinates of the vehicle; and
a transmitter configured to send the coordinates of the vehicle to the base station;
the base station having;
at least one base station transmitter configured to send the updated map data having updated attributes to the receiver of the driver assistance systems;
a base station receiver configured to receive the coordinates of the vehicles;
a base station memory configured to store the coordinates of the vehicles; and
a computation unit configured to select, for each of the subregions, those of the stored coordinates of the vehicles that are situated within the subregion, and to use these stored coordinates of the vehicle to update the attributes of this subregion,wherein each of the subregions is defined as a single square grid segment, each subregion covering a uniform area of the overall region defined by the digital map,wherein at least one of the vehicles has a respective sensor system configured to capture at least one driving dynamics measured variable from the vehicle, the sensor system being connected to the driver assistance system of the vehicle and transmitting the at least one driving dynamics measured variable,wherein each driver assistance system is configured to send the at least one driving dynamics measured variable together with the coordinates of the vehicle to the base station,wherein the computation unit of the base station is configured to update the attributes of the digital map using at least the received driving dynamics measured variables and the coordinates of the vehicles, the received driving dynamics measured variables and the coordinates of the vehicles being validated against one another and processed using statistical data evaluations by the computation unit of the base station, and to transmit the updated attributes of the digital map to the driver assistance systems of the vehicles,wherein the driver assistance systems are configured to actively engage in controlling the respective vehicles in which the driver assistance systems are located, based on the updated attributes of the digital map received from the base station,wherein the computation unit of the base station is configured to determine a time of the update of each of the attributes by the computation unit and to actuate the base station transmitter to send the times when each of the attributes were updated by the computation unit together with the updated attributes to the driver assistance systems, andwherein the time of the update of each of the attributes is used to determine whether the attributes are admissible for a particular driver assistance function of the driver assistance systems.
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Accused Products
Abstract
A system and method for updating a digital map for a driver assistance system in a vehicle. The digital map contains map data having coordinates and attributes for characterizing subregions of an overall region of the digital map. The system includes a base station and a plurality of vehicles, each equipped with a driver assistance system. The base station has at least one transmission unit for sending updated map data having updated attributes to the driver assistance systems. The driver assistance system has a memory unit for storing map data from at least a portion of the digital map, a receiver unit for receiving the updated map data sent by the base station and a control unit for updating the stored map data using the received updated map data.
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Citations
10 Claims
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1. A system that updates a digital map of a driver assistance system in a vehicle, wherein the digital map contains map data having coordinates and attributes characterizing subregions of an overall region depicted by the digital map, wherein the system comprises:
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a base station; and a plurality of vehicles, each vehicle having a driver assistance system having; a memory configured to store map data from at least a portion of the digital map; a receiver configured to receive updated map data; and a control unit configured to update the stored map data using the received updated map data; a navigation receiver configured to ascertain coordinates of the vehicle; and a transmitter configured to send the coordinates of the vehicle to the base station; the base station having; at least one base station transmitter configured to send the updated map data having updated attributes to the receiver of the driver assistance systems; a base station receiver configured to receive the coordinates of the vehicles; a base station memory configured to store the coordinates of the vehicles; and a computation unit configured to select, for each of the subregions, those of the stored coordinates of the vehicles that are situated within the subregion, and to use these stored coordinates of the vehicle to update the attributes of this subregion, wherein each of the subregions is defined as a single square grid segment, each subregion covering a uniform area of the overall region defined by the digital map, wherein at least one of the vehicles has a respective sensor system configured to capture at least one driving dynamics measured variable from the vehicle, the sensor system being connected to the driver assistance system of the vehicle and transmitting the at least one driving dynamics measured variable, wherein each driver assistance system is configured to send the at least one driving dynamics measured variable together with the coordinates of the vehicle to the base station, wherein the computation unit of the base station is configured to update the attributes of the digital map using at least the received driving dynamics measured variables and the coordinates of the vehicles, the received driving dynamics measured variables and the coordinates of the vehicles being validated against one another and processed using statistical data evaluations by the computation unit of the base station, and to transmit the updated attributes of the digital map to the driver assistance systems of the vehicles, wherein the driver assistance systems are configured to actively engage in controlling the respective vehicles in which the driver assistance systems are located, based on the updated attributes of the digital map received from the base station, wherein the computation unit of the base station is configured to determine a time of the update of each of the attributes by the computation unit and to actuate the base station transmitter to send the times when each of the attributes were updated by the computation unit together with the updated attributes to the driver assistance systems, and wherein the time of the update of each of the attributes is used to determine whether the attributes are admissible for a particular driver assistance function of the driver assistance systems. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for updating a digital map for a driver assistance system in a vehicle, wherein the digital map contains map data having coordinates and attributes for characterizing subregions of an overall region depicted by the digital map, wherein a plurality of vehicles each have a driver assistance system having a memory, comprising:
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storing at least one portion of the map data by each of the memories; receiving, by receivers in the driver assistance systems, updated map data having updated attributes to the driver assistance systems from at least one base station transmitter; updating the map data stored in the respective memory of the driver assistance systems by the control units of the driver assistance systems using the received updated map data; ascertaining coordinates for each of the vehicles using a navigation receiver in the driver assistance system of each of the vehicles; sending the coordinates to the base station by a transmitter in each of the driver assistance systems; receiving the coordinates by the base station using a receiver in the base station; storing the coordinates using a memory in the base station; selecting the stored coordinates of the vehicles that are situated within the subregion for each of the respective subregions by a computation unit in the base station; and updating the attributes of the subregion using the selected stored coordinates of the vehicles, wherein each of the subregions is defined as a single square grid segment, each subregion covering a uniform area of the overall region defined by the digital map, wherein at least one of the vehicles has a respective sensor system each respective sensor system capturing at least one driving dynamics measured variable from the vehicle, the sensor system connected to the driver assistance system of the vehicle transmitting the at least one driving dynamics measured variable, wherein each driver assistance system sends the at least one driving dynamics measured variable together with the coordinates of the vehicle to the base station, wherein the computation unit of the base station updates the attributes of the digital map using at least the received driving dynamics measured variables and the coordinates of the vehicles, the received driving dynamics measured variables and the coordinates of the vehicles being validated against one another and processed using statistical data evaluations by the computation unit of the base station, and transmits the updated attributes of the digital map to the driver assistance systems of the vehicles, wherein the driver assistance systems actively engage in controlling the respective vehicle in which the driver assistance systems are located, based on the updated attributes of the digital map received from the base station, wherein the computation unit of the base station is configured to determine a time of the update of each of the attributes by the computation unit and to actuate the base station transmitter to send the times when each of the attributes were updated by the computation unit together with the updated attributes to the driver assistance systems, and wherein the time of the update of each of the attributes is used to determine whether the attributes are admissible for a particular driver assistance function of the driver assistance systems.
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Specification