EP3729412A1 - Système de calcul d'une probabilité d'erreur de données de capteur de véhicule - Google Patents

Système de calcul d'une probabilité d'erreur de données de capteur de véhicule

Info

Publication number
EP3729412A1
EP3729412A1 EP18830435.6A EP18830435A EP3729412A1 EP 3729412 A1 EP3729412 A1 EP 3729412A1 EP 18830435 A EP18830435 A EP 18830435A EP 3729412 A1 EP3729412 A1 EP 3729412A1
Authority
EP
European Patent Office
Prior art keywords
sensor data
data
central computer
sensor
error probability
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP18830435.6A
Other languages
German (de)
English (en)
Inventor
Susanne EYRISCH
Rene Alexander Körner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Continental Automotive Technologies GmbH
Original Assignee
Continental Automotive GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Continental Automotive GmbH filed Critical Continental Automotive GmbH
Publication of EP3729412A1 publication Critical patent/EP3729412A1/fr
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B29/00—Maps; Plans; Charts; Diagrams, e.g. route diagram
    • G09B29/003—Maps
    • G09B29/006—Representation of non-cartographic information on maps, e.g. population distribution, wind direction, radiation levels, air and sea routes
    • G09B29/007—Representation of non-cartographic information on maps, e.g. population distribution, wind direction, radiation levels, air and sea routes using computer methods
    • 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
    • G08G1/0125—Traffic data processing
    • G08G1/0129—Traffic data processing for creating historical data or processing based on historical data
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
    • B60W50/0205—Diagnosing or detecting failures; Failure detection models
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
    • G01C21/34—Route searching; Route guidance
    • G01C21/3453—Special cost functions, i.e. other than distance or default speed limit of road segments
    • G01C21/3492—Special cost functions, i.e. other than distance or default speed limit of road segments employing speed data or traffic data, e.g. real-time or historical
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
    • G01C21/34—Route searching; Route guidance
    • G01C21/36—Input/output arrangements for on-board computers
    • G01C21/3602—Input other than that of destination using image analysis, e.g. detection of road signs, lanes, buildings, real preceding vehicles using a camera
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
    • G06N7/00—Computing arrangements based on specific mathematical models
    • G06N7/01—Probabilistic graphical models, e.g. probabilistic networks
    • 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
    • G08G1/0108—Measuring and analyzing of parameters relative to traffic conditions based on the source of data
    • G08G1/0112—Measuring and analyzing of parameters relative to traffic conditions based on the source of data from the vehicle, e.g. floating car data [FCD]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
    • B60W50/0205—Diagnosing or detecting failures; Failure detection models
    • B60W2050/0215—Sensor drifts or sensor failures

Definitions

  • the invention relates to an analysis of sensor data from
  • the invention relates to a system and method for calculating an error probability of sensor data of a vehicle.
  • an update device for updating a digital map for a vehicle which has a plurality of sensors that measure the current traffic situation, the movement of the vehicle or even the road conditions. These measured values are transferred to a central office which evaluates them and then sends corresponding update data for updating the digital map to other vehicles.
  • Embodiments of the invention may increase data quality and reliability of vehicle-based sensor data, thereby reducing or avoiding erroneous information for subsequent applications.
  • the invention described in the following is based on the following considerations: In order to significantly improve the up-to-dateness of the digital map data, it would be desirable, ideally in real time or with only slight delays, for possible changes in the environment of one
  • the system includes a sensor unit with sensors in a vehicle.
  • the vehicle is, for example, a motor vehicle, such as a car, bus or truck, or else a rail vehicle, a ship, an aircraft, such as a helicopter or airplane, or, for example, a bicycle.
  • the sensor unit is configured to provide a sensor dataset to an object in the vicinity of the vehicle.
  • object should be interpreted in this context very broad and should be static objects such as traffic signs, obstacles, road signs, other vehicles, people and animals, etc., but also dynamic objects such as traffic lights, weather phenomena, road conditions such as black ice, fog, Describe gradient changes of a track marker and the like.
  • all conditions that can be detected by sensors, ie impressions, events and observations can also be understood as an object.
  • the environment of the vehicle can consequently mean the vehicle itself, but also several meters or several hundred meters around the vehicle.
  • the system further includes a central computer configured to receive the sensor record from the sensor unit.
  • this central computer may be a cloud-based server located at one or more central sites. It is essential here that the sensor data sets of different vehicles can be evaluated in a logically central location in their entirety.
  • a wireless transmission of the sensor data sets from the sensor unit to the central computer can be achieved via a wide range of radio standards, such as Bluetooth, WLAN (eg WLAN 802.1 la / b / g / n or WLAN 802.11p), ZigBee, WiMax or even cellular radio systems like GPRS, UMTS or LTE. It is also possible to use other transmission protocols.
  • the GE- mentioned protocols offer the advantage of already existing standardization.
  • the system further comprises a reference database with reference data, the reference data having a reference to a position of the vehicle at the time of generation of the Sens orkorsatzes.
  • Reference data can be a variety of types of information and data that are in a context with the sensor data. For example, these may be reference data from a database of a traffic control center if the sensor data represents the optical detection of a dynamic traffic sign.
  • the reference to the position of the vehicle as well as the time point has the advantage that both the sensor data and the reference data relate to the same object or event or observation, and thus have a relation to each other.
  • the central computer is designed to calculate an error probability of the sensor data set with the reference data from the reference database.
  • an error probability of the sensor data set with the reference data from the reference database is calculated based on the reference information from the reference data records. Consequently, a plurality of reference data from different sources can make a statement as to whether or not a sensor data record is erroneous with a certain probability.
  • Advantage of a now known error probability may be that in particular outliers and unlikely Ext remute can be better recognized and possibly discarded.
  • the reference data is generated from sensor data of other vehicles. This is to describe the case where a correctness of a sensor data record of a vehicle is checked by a certain number of other vehicles transmitting identical or similar data records. However, especially in rural areas, a number of vehicles passing through an object can be very small within a period of time, so that possibly wrong information can be corrected much later.
  • Advantage of the solution presented here is that a variety of other, external data sources and databases used as a reference and can be used to calculate a probability of error even in Abwe senheit other vehicles.
  • the central computer is designed to classify the sensor data into object classes and to select the reference data object-specifically.
  • the central computer is designed in such a way that it first analyzes and recognizes the type and origin of the sensor data, and uses the identified object class to select and apply the appropriate reference data for calculating the error probability.
  • Under an object class can be, for example, typical national signage, road conditions, weather phenomena, traffic flow data, data from comparable road objects or previous observations of objects. What is meant here is a rough classification into the type of observation to which suitable reference data are then assigned for a meaningful calculation of an error probability.
  • This assignment of reference data to object classes can, for example, be defined in advance and stored in the central computer.
  • the reference data in the reference database is assigned a respective error probability.
  • the central computer takes into account the error probability of the reference data in such a way that the associated reference data are weighted less with increasing error probability. For example, if ice is reported on a road section by a sensor record, information from a social network may be consulted. If information about road conditions is published there in relation to the same geographical position and time, these are generally not tested and therefore more susceptible to incorrect information. An error probability of the reference data record can incorporate this circumstance into a calculation of the error probability of the sensor data record.
  • the central computer is designed to calculate the error probability of the reference data on the basis of further reference data and / or on the basis of the sensor data.
  • the central computer is able to calculate reliability or credibility of reference data based on previous calculations in the context of the other reference data and the sensor data. Thus, if history reveals that a reference data set has predominantly conflicting information compared to the other reference data, it is likely that this reference data set will be less credible and thus increase the probability of error of this reference data source.
  • the sensor unit in the vehicle calculates a preliminary probability of error of the sensor data. This can be done for example on the basis of further sensor data of the vehicle, but also on the basis of reference data from reference databases.
  • the vehicle itself can incorporate external reference data or information from its own on-board system via its own communication devices and calculate a preliminary error probability, which is then optionally calculated in a second step with further data in the central computer to a resulting error probability.
  • Advantage may be here that, for example, for the direct use of the sensor data in the vehicle already an evaluation based on reference data takes place and thus an error rate of the sensor data sets may decrease.
  • cameras may have a lower detection rate in situations with limited viewing conditions, such as fog.
  • the sensor unit knows from on-board information, for example by the fog light switched on, that obviously fog conditions prevail and can thus calculate a provisional error probability autonomously without having to draw external data sources.
  • the reference data are, for example, weather data, traffic flow data, traffic control data, sensor data of the same vehicle, sensor data of other vehicles and / or digital map data.
  • digital maps or “digital map data” is also understood to mean maps for advanced driver assistance systems (ADAS) without navigation.
  • the objects are, for example, traffic signs, lane markings, weather conditions, lanes, traffic light conditions, road conditions, vehicles, obstacles and / or barriers.
  • a method for calculating an error probability of sensor data sets of a sensor which has the steps described below. There is a reception of sensor data by a central computer. Thereafter, the sensor data is classified by the central computer. This means that, as described above, object classes are recognized which allow a rough classification into similar objects. In a further step, selecting and reading object class-specific reference data from a reference database is performed by the central computer. On the basis of the object class identified in the previous step, therefore, suitable reference data for validating and assessing a correctness or plausibility of the sensor data are selected and read from the reference database.
  • an error probability of the sensor data is calculated on the basis of the selected reference data by the central computer.
  • This calculated error The device may be provided by the central computer, according to an embodiment of the invention, together with the sensor data including position data of a digital map application. This means that the data obtained can be displayed graphically on a map surface using position data, for example, possibly displaying the calculated error probability.
  • the central computer performs a comparison of the calculated error probability of the sensor data with a predetermined threshold and marks the sensor data as faulty if this threshold is exceeded.
  • sensor data recognized as defective are discarded and can thus advantageously prevent a corruption or misinterpretation of the sensor data, for example in the context of an application based thereon.
  • FIG. 1 shows a prior art system for centrally processing vehicle-based sensor data in digital maps.
  • Fig. 2 shows a schematic representation of a system according to the invention for calculating an error probability of sensor data.
  • FIG. 3 shows a method according to the invention for calculating an error probability of sensor data of a vehicle.
  • FIG. 1 shows an example of a prior art system in which vehicle-based sensor data sets 12 are centrally merged, processed and processed as digital map data.
  • object 20 On a road section 22 is an object 20, which is concretely a variable traffic sign for speed limit, which is often found on signs bridges of highways.
  • the displayed maximum speed can be dynamically adjusted by a traffic control center. If, for example, the displayed maximum speed changes, a first vehicle 14 visually detects the object 20 when passing the object with a sensor 24.
  • the sensor 24 is, for example, a camera which is aligned in the direction of travel of the vehicle 14.
  • the first vehicle 14 now reports a sensor data record 12 to a central computer 26. This can be done for example via wireless transmission methods such as 4G / 5G, UMTS, Wi-Fi or WLAN. If a second vehicle 16 and a third vehicle 18 now pass the object 20, their sensor data 12 are likewise transmitted to the central computer 26. If the central computer 26 receives matching sensor data sets 12, it can be assumed that the reported sensor data records 12 are correct, whereupon the central computer generates digital map data 28 for a mapping application 30 and updates any existing digital map data 28 to the same object 20. It can be problematic here if sensor data 12 which does not match are received by the central computer 26 and it remains unclear to what extent the transmitted sensor data sets 12 are possibly faulty.
  • a sensor unit 32 in the vehicle can perform various functions within a vehicle. This can be, for example, a pre-processing or Conditioning of signals of the sensors 24 or a control of the sensors 24 be. In one example, the sensor unit 32 assumes the calculation of a provisional error probability 38 (see below).
  • the sensor unit 32 is designed such that it generates from the totality of the sensor signals of the connected sensors 24 a sensor data record 12 which describes an object 20 (see FIG. 1) in the vicinity of the vehicle 14.
  • a central computer 26 receives this sensor data record 12.
  • the central computer 26 classifies the received sensor data record 12 with respect to predefined object classes.
  • Several reference databases 34 are connected to the central computer 26.
  • the central computer 26 selects suitable reference databases 34 on the basis of the identified object classes and reads out reference data 36.
  • these reference data 36 have a reference to a position of the vehicle 14 at the time of generation of the sensor data set 12.
  • the central computer 26 calculates with these reference data 36 a King sensitivity 38 of the sensor data set 12. This Hyundaiwahr probability 38 of the sensor data set 12 is together with the sensor data 12th and position data is converted into digital map data 28 and provided to a mapping application 30, shown here as a database.
  • a method according to the invention for calculating an error probability 38 of sensor data 12 is Darge.
  • a reception 110 of a sensor data record 12 is performed by a central computer 26.
  • the data is classified 120 of the sensor data record 12 into object classes by the central computer 26.
  • a selection and readout of object class-specific reference data 36 from a reference database 34 takes place completed by the central computer 26.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Remote Sensing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Analytical Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Human Computer Interaction (AREA)
  • Algebra (AREA)
  • Computing Systems (AREA)
  • Software Systems (AREA)
  • Data Mining & Analysis (AREA)
  • Computational Mathematics (AREA)
  • Artificial Intelligence (AREA)
  • Mathematical Analysis (AREA)
  • Probability & Statistics with Applications (AREA)
  • Mathematical Optimization (AREA)
  • Evolutionary Computation (AREA)
  • Pure & Applied Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • Business, Economics & Management (AREA)
  • Ecology (AREA)
  • Computer Hardware Design (AREA)
  • Traffic Control Systems (AREA)
  • Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)

Abstract

L'invention concerne un système (10) et un procédé (100) de calcul d'une probabilité d'erreur (38) d'un ensemble de données de capteur (12) basé sur un véhicule, comprenant une unité de détection (32) et des capteurs (24), une base de données de référence (34) contenant des données de référence (36) et un ordinateur central (26). Les données de référence (36) ont une relation temporelle et spatiale par rapport à l'ensemble de données de capteur (12). L'ordinateur central (26) calcule une probabilité d'erreur (38) de l'ensemble de données de capteur (12) sur la base de données de référence appropriées (36) à partir des bases de données de référence (34).
EP18830435.6A 2017-12-21 2018-12-17 Système de calcul d'une probabilité d'erreur de données de capteur de véhicule Pending EP3729412A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017223632.9A DE102017223632A1 (de) 2017-12-21 2017-12-21 System zur Berechnung einer Fehlerwahrscheinlichkeit von Fahrzeugsensordaten
PCT/EP2018/085194 WO2019121510A1 (fr) 2017-12-21 2018-12-17 Système de calcul d'une probabilité d'erreur de données de capteur de véhicule

Publications (1)

Publication Number Publication Date
EP3729412A1 true EP3729412A1 (fr) 2020-10-28

Family

ID=65003348

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18830435.6A Pending EP3729412A1 (fr) 2017-12-21 2018-12-17 Système de calcul d'une probabilité d'erreur de données de capteur de véhicule

Country Status (6)

Country Link
US (1) US11657707B2 (fr)
EP (1) EP3729412A1 (fr)
JP (1) JP7021355B2 (fr)
CN (1) CN111465972B (fr)
DE (1) DE102017223632A1 (fr)
WO (1) WO2019121510A1 (fr)

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Also Published As

Publication number Publication date
CN111465972B (zh) 2022-08-23
JP2021507417A (ja) 2021-02-22
CN111465972A (zh) 2020-07-28
US20210012648A1 (en) 2021-01-14
DE102017223632A1 (de) 2019-06-27
US11657707B2 (en) 2023-05-23
WO2019121510A1 (fr) 2019-06-27
JP7021355B2 (ja) 2022-02-16

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