DE102004005152A1 - Method and device for outputting position data to a mobile terminal - Google Patents

Abstract

The invention relates to a method for outputting position data (P) to at least one mobile terminal (2), in which raw data (R) are acquired by means of a navigation unit (4) of a vehicle from which position data (P) are extracted, which are determined on the basis of vehicle-specific operating data (B) are processed to extended position data (PE), wherein the extended position data (PE) are converted into a standardized format suitable for data transmission and transmitted via a data bus (10a, 10b) to the mobile terminal (2). Furthermore, the invention relates to a device (1) which is particularly suitable for carrying out the method.

Description

The The invention relates to a method and an apparatus for dispensing of position data, in particular of GPS data, to a mobile terminal, for. B. a mobile phone, a PDA device or a Pocket PC, in particular for use in an information service.

From the EP 0 919 787 B1 a navigation data receiving device is known, which has on a common PC card (PC = personal computer) a modem block for receiving navigation data and a GPS block (GPS = Global Positioning System) for receiving GPS data of a GPS system. The device allows the digital navigation data such as map data, restaurant data and city data to be linked and output with the GPS data. The modem block represents a possible information service, such. B. a map service, z. B. for city maps, a guide service, z. B. for restaurant or a city service, z. For city information.

Furthermore, from the DE 100 16 674 A1 a driving information device for outputting data such as vehicle data or driving information known in the vehicle, in which an output unit is connected to computing devices via a data bus. As a result, an output can be made centrally for all the computing devices connected to the data bus in the output unit, whereby only one output unit is required for a plurality of computing devices. As computing devices are understood in example as a navigation device, a car radio unit, an on-board computer or a portable computer. In this case, the data from each computing device are generated and processed separately and output at the central output unit, if necessary together or separately.

Both is based on known from the prior art devices, that when outputting information or data the position data with navigation data or other data of different information services, such as travel information services, map services, etc., linked together and be issued.

Of the Invention is based on the object, a method and a for execution specify the method suitable device, the automatic computer-aided Output of position data to a mobile terminal to be improved.

The Task is by means of a method with the specified in claim 1 Characteristics solved. The object is further provided by means for carrying out the method Device solved with the features specified in claim 9.

The Invention is based on the consideration, that not only the output of information about the position should be improved in terms of accuracy, but the raw position data should be processed in such a way that this for a variety can be applied by various information services. there the position data should be independent from the subsequent Application on a mobile device and thus separate from the mobile device terminal be detected, corrected and refined. Under refinement of the position data will extract data over Vehicle position and vehicle movement from various sensor sources, such as received GPS data and vehicle sensors, e.g. Wheel pulse counter, yaw gyro, Reverse signal etc. and their processing to extended position data understood. The enhanced, especially in terms of accuracy improved Position data are in the processing regarding presentation format standardized and standardized for different applications or information services, in particular in a mobile terminal, such as a Pocket PC (PC = personal computer) or a PDA device (PDA = Personal Digital Assistant) to be used. For this it is envisaged that the extended position data in a for data transmission implemented appropriate and position-based standardized format and over a data bus is transmitted to the mobile terminal.

at the processing or refinement of the position data on the basis of vehicle-specific operating data are already recorded and available operating data in the vehicle, such as driving speed, yaw rate, etc., taken into account, but also kinematic Gesetzmäigkeiten the vehicle movement. This can provide additional hardware for finishing or processing the position data omitted because as a vehicle-specific Operating data stored in control units, like the engine control unit or the onboard supply control unit, existing information or that of sensors, such as speedometer or gyrometer, recorded operating data and used become. About that can out next to the on the mobile device implemented information service also integrated in the vehicle or used information services with the refined or extended Position data are supplied, so that the respective information service in particular, its accuracy is improved.

Preferably, as vehicle-specific travel data, wheel revolution data, yaw rate data, speed, direction angle data, map data and / or sensor error estimation data. On the basis of, for example, by means of an odometer or Radumdrehungsmesser detected distance data and Radumdrehungsdaten depending on the wheel circumference extracted with a coarse resolution of, for example, 5 m, but noise distorted by measurement position position data from GPS measurements can be extended or refined, so that these errors are at least greatly reduced and results in a more realistic distribution of the position data.

in the Generally, to capture the raw data or GPS data (GPS = Global Positioning System) a radio connection to at least four Satellites required. In inner cities, under bridges or in Tunnels can therefore lead to unreliable measurements or even to Failure of the navigation unit come. Advantageously Therefore, based on previous position data and the vehicle-specific Operating data extended position data determined so that, for example despite the failure of the GPS connection, a predicted position continues can be determined and issued. It can be based on direction angle data and / or Reverse indicator also direction change determined and in the determination of the extended Position data taken into account become.

For as possible multiple use of extended position data in different Information services of various mobile terminals the extended position data into a position-related standard format, z. As the NMEA format implemented. In addition, the extended position data depending on the type and structure of the data bus, for example in a radio network for one wireless data transmission implemented in Bluetooth standard. For a wired data transfer the extended position data are preferred in CAN standard or MOST standard implemented. The implementation of extended position data in a standardized Format allows a communication about a standardized data protocol of the data bus, so that a unified data transfer to various, attached to the data bus mobile devices is possible. The conversion of the extended position data into a position-related Standard format allows the use in any mobile information service Terminal.

For as possible Universal use of extended position data in one of the Information services on a mobile terminal become the extended location data in the standardized format on the receiver side linked to informational data. Preferably, the information data comprises map data, video data, Audio data, navigation data, travel data, service data, customer data, safety data and / or vehicle data. As a result, the stored in the respective information service Information data with the advanced position data, which also at Failure of the navigation unit based on the vehicle-specific operating data be determined continuously for a dynamic and up-to-date edition of information about, for example Security and warning functions, about sights, about opening times or about restaurants used on the preceding and thus expected route become.

In a possible embodiment be as a mobile device a car radio, a CD player, a mobile device, a Pocket PC and / or a PDA devices (PDA = Personal Digital Assistant), wherein on the respective mobile terminal at least an associated Information service, eg. A travel information service, a city plan service City information service and / or a navigation service implemented is.

Regarding the Device for outputting position data on a mobile terminal is the task solved by a navigation unit for acquiring raw data and a Data processing unit for extracting position data the raw data as well as for the processing of the position data on the basis of vehicle-specific operating data for extended position data, wherein the navigation unit and the data processing unit via a data bus are connected to at least one mobile terminal, wherein a Converter for implementing the extended position data in a for data transfer appropriate standardized format is provided and the extended Position data in standardized format transferable to the mobile device are. Depending on the type and design can while the navigation unit, the data processing unit and the converter is a unit, z. As a navigation system form. The Navigation system is in this embodiment via the data bus with at least a mobile device connected. Alternatively you can the navigation unit, the data processing unit and the converter be designed as separate hardware and / or software modules. Also the converter can be a module of another control unit, eg. B. a telematics control unit form. The control unit is via a Data bus, z. B. an in-vehicle data bus, with the navigation unit connected.

The data bus is preferably designed as a CAN bus (CAN = Controller Area Network) or a MOST (MOST = Media Orientated System Transport) bus. The CRN bus is designed as a wire or copper cable network; The MOST bus is designed as an optical or fiber optic network. Both bus systems enable secure data transmission, especially when used in a vehicle. Alternatively or additionally, the data bus can be configured wirelessly as a radio network, in particular as a Bluetooth connection or UMTS connection (UMTS = Universal Mobile Telecommunications System). Depending on the type and structure of the respective mobile terminal, various types of data buses can be used between the respective mobile terminal and the navigation unit or the data processing unit.

Prefers is to the data bus as a mobile terminal a car radio, a CD player, a mobile device, a Pocket PC and / or a PDA device connected. Depending on the nature and structure of the process are used as information the extended position data associated with further information data on the respective mobile terminal, in particular for the on this implemented information service issued. For this purpose can the respective mobile device with an output unit, in particular a display unit and / or an audio unit, be provided. Alternatively or additionally, the Information directly about an output unit, e.g. B. over an instrument cluster in the cockpit of the vehicle to be issued.

The particular advantages of the invention are that without additional hardware on mobile devices, such as B. on a mobile phone, a PDA device, extended position data in standardized format for any information service, e.g. For mobile dynamic navigation, a mobile travel guide, a mobile logbook or other location-based information services, can be used.

following is an embodiment of Invention explained in more detail with reference to a drawing. Show:

1 and 2 schematically different embodiments of a device for outputting position data to a mobile terminal.

each other corresponding items or elements are in all figures with the same reference numerals Mistake.

1 shows a device 1 for outputting position data P to at least one mobile terminal 2 , In this case, the device comprises 1 on the vehicle side or on another movable object, such as a bicycle, an airplane, a navigation unit 4 for the acquisition of raw data R. The raw data R, for example, by means of a navigation receiver 6 , z. As a GPS receiver, in a format, z. B. the NMEA format (NMEA = National Marine Electronics Association) received. From the raw data R are by means of a data processing unit 8th Position data P extracted, z. As coordinates such as longitude and / or latitude, time, speed and number of satellites. Alternatively, the position data P may be extracted from raw data R which is referred to as GPS data over a data bus 10a , z. As a MOST or CAN bus, and a data bus interface 12a a data processing unit 14 the navigation unit 4 from another bus participant 16 , z. As a GPS receiver supplied. In other words: the data processing unit 14 extracted from the received or transmitted raw data R in the format concerned, z. B. NMEA format, the position data P.

Subsequently, the position data P by means of the data processing unit 14 processed on the basis of vehicle-specific operating data B to extended position data PE. As vehicle-specific operating data B of the navigation unit 4 For example, not shown sensors, z. An odometer, a gyrometer and a tachometer, odometer data, wheel revolution data, yaw rate data, speed data, direction angle data, map data and / or offset data. Alternatively or additionally, the vehicle-specific operating data B can be transmitted via the data bus 10 from another bus participant 16 , z. As another control device or a bus-capable sensor to the navigation unit 4 be transmitted.

The extended position data PE are by means of a converter 18 for using the extended position data PE in any information service 20 of the mobile terminal 2 implemented in a standardized format and via another data bus interface 12b another data bus 10b to the mobile device 2 transfer. As a mobile device 2 is used for example a car radio, a mobile device, a Pocket PC (PC = personal computer) or a PDA device. As a data bus 12b A radio network, in particular a Bluetooth connection, or a mobile radio connection, such as a UMTS connection, is preferably provided. Alternatively, the further data bus 12b also wired, z. B. as a CAN or MOST data bus, be formed.

When operating the device 1 First, the raw data R from the navigation receiver 6 received or from another bus subscriber 16 , z. As a telematics control unit, read. Subsequently, the position data P are extracted from the raw data R and based on vehicle spec zifischen operating data B in advanced position data PE processed or refined.

Processing or refinement of the position data P based on the vehicle-specific operating data B is understood, for example, as the so-called map-matching method. In contrast to freely moving vehicles, such as ships or aircraft, motor vehicles are bound to a road network. Therefore, in the refinement of the position data P acquired from the raw data R, the accurate position or location determination is supported by digital map data. Ie. The location and movement information of the position data P obtained from the GPS or raw data are processed to extended position data PE on the basis of the digital map data. In addition, vehicle-specific operating data B, such as odometer distance data or yaw rate data of a gyrometer, can be taken into account in the map matching method, so that permanent location and position determination independently of the received or transmitted raw data R alone based on previous position data P, the operating data B and the map data is enabled. In this case, the instantaneous position is determined by means of the continuously acquired operating data B and the map data, without simultaneously performing a GPS measurement. Ie. even in case of failure of the navigation receiver 6 Be determined based on the operating data B extended position data PE, which predict the current location. With a sufficient reception of the navigation receiver 6 and a later GPS measurement, the estimated position can then be corrected on the basis of the current position data P.

at another refining or processing procedure will be the GPS position determination by means of a so-called coupling location method supported. It will not be closer by means of represented sensors, such as an odometer (= odometer or Radumdrehungsmesser) and a yaw rate gyroscope (= gyrometer), recorded vehicle-specific operating data B and to determine the exact position used. For example, by means of the Odometers detects the wheel revolutions and processes them with the wheel circumference of the vehicle, so that as a result the length of the already traveled Way and the current speed can be determined. Alternatively or additionally This information can also be recorded by the odometer and / or speedometer become. The yaw rate gyro measures how fast the vehicle is when cornering the direction changes. Thus, based on the determined operating data B on the driven way in connection with those of the yaw rate gyros Determined direction change the current position in shape the extended position data PE are determined. This method is also called dead reckoning or Koppelor device. Odometer and Yaw rate gyros thus provide undisturbed by external influences permanently information about the position change of the vehicle.

Subsequently, these refined or extended position data PE is used for any information service 20 any mobile device 2 implemented in a standardized format and over the data bus 10b to the relevant mobile device 2 transfer. The implementation of the extended position data PE in a standard format is preferably again in the NMEA format of the raw data R. The NMEA format is particularly suitable because this is used as a standard format for position data from various applications. In other words, from the raw data R received in the NMEA format, the readable position data P are extracted and then processed by means of the vehicle-specific operating data B to extended or refined position data PE, which are then converted again into the NMEA format for standardized transmission.

In addition, the implementation is determined by the nature of the data bus 10b , In a designed as a radio network with a Bluetooth connection data bus 10b the refined or extended position data PE are converted in addition to the NMEA format in Bluetooth standard.

For a universal use of the extended position data PE for any information service 20 of the mobile terminal 2 the extended position data PE with information data I, z. As map data, video data, audio data, navigation data, travel data, service data, customer data, security data and / or other track-relevant data or vehicle data linked. This is an output of more accurate navigation instructions, eg. As with traffic lane information of information on attractions and their opening times or restaurants, as well as driving functions, such as legal maximum speeds on the route ahead, possible.

Depending on the type and design of the device 1 may be the output of the extended position data PE on a mobile terminal 2 take place within a vehicle, not shown. Alternatively, the extended position data PE in the standardized format to a mobile terminal 2 be transmitted outside the vehicle. In this case, the respective mobile terminal 2 with an output unit 22 , in particular a display unit and / or an audio unit, be provided.

2 shows an alternative embodiment of the device 1 for outputting extended position data PE on a mobile terminal 2 , In this case, the acquisition of the raw data R and its processing in position data P and their refinement or processing to the extended position data PE is separated from the implementation of the extended position data PE in a standardized format, eg. B. in the NMEA format.

For example, the navigation unit includes 4 for acquiring the raw data R and the operating data B and processing them to the extended position data PE, the data processing unit 14 , The actual implementation in a standard format for a multiple use of the extended position data PE for different applications on one or more mobile devices 2 is done by another bus user 16 , z. B. a control device, such as a telematics control unit executed. This is the navigation unit 4 via an in-vehicle data bus 10a with the bus participant 16 connected. The bus participant 16 , z. As the telematics control unit, comprises a data processing unit 14 with a converter 18 which converts the refined or extended position data PE into the standard format and via a data bus interface 12b over the data bus 10b to one or more mobile devices 2 transfers.

Claims (13)

Method for outputting position data (P) to at least one mobile terminal ( 2 ), in which by means of a navigation unit ( 4 A vehicle raw data (R) are detected from which position data (P) are extracted, which are processed on the basis of vehicle-specific operating data (B) to extended position data (PE), wherein the extended position data (PE) in a suitable for data transmission standardized format implemented and via a data bus ( 10a . 10b ) to the mobile terminal ( 2 ) be transmitted. Method according to Claim 1, in which the vehicle-specific Operating data (B) route data, wheel revolution data, travel direction data, yaw rate data, Speed data, direction angle data, map data and / or Estimated data about sensor errors be used. Method according to Claim 1 or 2, in which the extended position data (PE) for use in any information service ( 20 ) in a position-based standard, preferably in NMEA standard implemented. Method according to one of claims 1 to 3, wherein the extended Position data (PE) for a wireless data transmission be implemented in Bluetooth standard. Method according to one of claims 1 to 4, wherein the extended Position data (PE) for a wired data transmission be implemented in CAN standard or MOST standard. Method according to one of claims 1 to 5, in which the extended position data (PE) in the standardized format on the receiver side with information data (I) of the mobile terminal ( 2 ). The method of claim 6, wherein the information data (I) map data, video data, audio data, navigation data, travel data, Service data, customer data, safety data and / or vehicle data include. Method according to one of Claims 1 to 7, in which as a mobile terminal ( 2 ) a car radio, a CD player, a mobile device, a Pocket PC and / or a PDA device are used. Contraption ( 1 ) for outputting position data (P) to at least one mobile terminal ( 2 ) comprising a navigation unit ( 4 ) of a vehicle for acquiring raw data (R) and for extracting position data (P) from the raw data (R) and for processing the position data (P) based on vehicle - specific operating data (B) to extended position data (P, PE), wherein the Navigation unit ( 4 ) via a data bus ( 10a . 10b ) with at least one mobile terminal ( 2 ) and a converter ( 18 ) is provided for the implementation of the extended position data (PE) in a standard format suitable for data transmission and the extended position data (PE) in a standardized format to the information service ( 20 ) are transferable. Contraption ( 1 ) according to claim 9, wherein the data bus ( 10a . 10b ) is designed as a wired CAN bus or as a MOST bus. Contraption ( 1 ) according to claim 9 or 10, wherein the data bus ( 10a . 10b ) is designed wirelessly as a radio network, in particular as a Bluetooth connection or UMTS connection. Contraption ( 1 ) according to one of claims 9 to 11, in which the data bus ( 10a . 10b ) as an information service ( 20 ) a car radio, a CD player, a mobile device, a Pocket PC and / or a PDA device is connected. Contraption ( 1 ) according to one of claims 9 to 12, in which the respective information service ( 20 ) with an output unit ( 22 ), in particular a display unit and / or an audio unit hen is.