EP2766881A1 - Verfahren und vorrichtung zum kalibrieren eines umfeldsensors - Google Patents
Verfahren und vorrichtung zum kalibrieren eines umfeldsensorsInfo
- Publication number
- EP2766881A1 EP2766881A1 EP12762232.2A EP12762232A EP2766881A1 EP 2766881 A1 EP2766881 A1 EP 2766881A1 EP 12762232 A EP12762232 A EP 12762232A EP 2766881 A1 EP2766881 A1 EP 2766881A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sensor
- vehicle
- calibration
- environment
- server
- 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.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C5/00—Registering or indicating the working of vehicles
- G07C5/008—Registering or indicating the working of vehicles communicating information to a remotely located station
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D18/00—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
- G01D18/002—Automatic recalibration
-
- 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
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
Definitions
- the invention relates to a method and a device for calibrating an environment sensor for sensory detection of a vehicle environment of a vehicle.
- the invention further relates to a system for calibrating an environmental sensor and a computer program.
- the object underlying the invention can therefore be seen to provide an improved method and an improved apparatus for calibrating an environmental sensor for sensory detection of a vehicle environment of a vehicle.
- the object underlying the invention can also be seen to provide a corresponding system for calibrating an environmental sensor for sensory detection of a vehicle environment of a vehicle.
- the object underlying the invention can also be seen to provide a corresponding computer program.
- a method for calibrating an environmental sensor for sensory sensing of a vehicle environment of a vehicle. This therefore means, in particular, that the environment sensor is designed to sensory detect a vehicle environment.
- sensor data corresponding to a vehicle environment and formed by means of the environmental sensor are sent to a server arranged externally of the vehicle, so that the server can check the sensor data.
- the server provides calibration data for a sensor calibration based on the sensor data and reference sensor data.
- the reference sensor data correspond in particular to a reference vehicle environment assigned to the vehicle environment.
- This calibration data is sent to the environmental sensor so that a sensor calibration can be performed based on the calibration data.
- an error signal is sent to a controller, which then controls a vehicle component.
- an apparatus for calibrating an environment sensor for sensory detection of a vehicle environment of a vehicle is provided.
- a transmitter is provided which is set up to transmit sensor data formed by means of the environment sensor and corresponding to a vehicle environment to a server arranged externally of the vehicle for checking the sensor data.
- a receiver for receiving sensor calibration calibration data formed by the server for receiving sensor calibration calibration data formed by the server.
- the calibration data are based on the sensor data and reference sensor data corresponding to a vehicle environment associated with the reference vehicle environment.
- a control for controlling a vehicle component is provided. Furthermore, an error signal image is provided for forming and sending an error signal upon unsuccessful calibration to the controller.
- the controller is configured to control the vehicle component after receiving the error signal from the controller.
- a system is provided for calibrating an environmental sensor for sensory sensing a vehicle environment of a vehicle. The system includes the apparatus for calibrating an environmental sensor for sensory detection of a vehicle environment of a vehicle. Furthermore, the system comprises a server with a database in which reference sensor data are stored. The reference sensor data corresponds to reference vehicle environments.
- a computer program which comprises program code for carrying out the method for calibrating an environmental sensor for sensory detection of a vehicle environment of a vehicle when the computer program is executed on a computer, in particular a controller.
- the invention thus encompasses the idea of sensory detection of a vehicle environment.
- the corresponding sensor data is then sent to an external server.
- the server compares the sensor data with reference sensor data and forms calibration data based on the comparison.
- This calibration data is then sent from the server back to the environmental sensor so that a sensor calibration can be performed based on the calibration data. If sensor calibration is not possible or if the sensor calibration was unsuccessful, an error signal is generated.
- This error signal is sent to a controller, which then controls a vehicle component.
- the case of an unsuccessful sensor calibration is considered, with suitable measures being taken in the event of unsuccessful sensor calibration. can be fen.
- the case of unsuccessful sensor calibration in the prior art has not been described.
- an improved and expanded method, a corresponding device, a corresponding system and a corresponding computer program for calibrating an environment sensor are provided, since according to the invention still other situations, in particular the unsuccessful sensor calibration, can be detected and taken into account.
- the term “externally” refers to an area that is outside the vehicle
- internal is in particular a region arranged in the vehicle.
- Sensor data in the sense of the present invention includes in particular information about the vehicle environment.
- Such information may, for example, relate to physical objects.
- a physical object may be, for example, a traffic sign, a signal system or a boundary post of the road.
- the sensor data include physical characteristics of the road, such as a road width, a lane width, curve radii, and / or departures.
- the sensor data includes dimensions and / or positions of the physical objects, in particular the relative positions to each other. This means, for example, that a width, a height and / or a length of the physical object are detected.
- the respective position and dimensions are also stored in the sensor data.
- sensor data may also include information about current conditions, such as, for example, that there is a construction site with changed road characteristics at the corresponding position.
- sensor data may also include lane data that includes information about a lane line color, for example.
- Sensor data in the sense of the present invention include images and / or videos in particular.
- the sensor data is assigned in particular a corresponding position.
- a vehicle position at the time of sensory detection of the vehicle surroundings is determined so that the determined
- Vehicle position can be assigned to the detected vehicle environment.
- INS In particular, a corresponding position is also assigned to the reference vehicle environment so that an assignment of the vehicle surroundings to the reference vehicle environment can be carried out via the position.
- the environmental sensor may be a video sensor, a radar sensor, an ultrasonic sensor or a lidar sensor.
- the environmental sensor may preferably be comprised by an environmental sensor system for sensory detection of the vehicle environment.
- the environmental sensor system may also have further environmental sensors, which may preferably be identical or different.
- the environmental sensor system may include a video camera, preferably a 3D video camera, an environment camera system for image capturing a 360 ° environment of the vehicle, a time-of-flight sensor, and / or a photonic mixer detector, also known as "photonic mixing device” (PMD) sensor
- a PMD sensor may be used as an image sensor in a TOF camera, where TOF stands for "time of flight” and is based on the light transit time method.
- the video camera may in particular be a stereo video camera.
- it can be provided that the sensor data of a respective sensor are fused and sent as fused sensor data to the server for checking.
- a simultaneous calibration of the respective sensors is advantageously made possible.
- the vehicle component is a signaling device for a driver to provide the information regarding the unsuccessful sensor calibration.
- the signaling device can signal to the driver that the sensor calibration was unsuccessful.
- the signaling device can preferably be set up for audible and / or graphic or visual and / or haptic signaling. This means in particular that the driver is signaled acoustically and / or visually and / or haptically that the sensor calibration was unsuccessful.
- the vehicle component is a transmitter for communicating the information relating to the unsuccessful sensor calibration to a relative one to the vehicle externally arranged further server and / or to send to the server.
- the controller controls the transmitter in such a way that it sends the information relating to the unsuccessful sensor calibration to the further server and / or to the server.
- the further server can be operated, for example, by the vehicle manufacturer, so that the vehicle manufacturer obtains knowledge that a sensor calibration was unsuccessful. This information can be used by the vehicle manufacturer, for example for quality control.
- the further server can also be used, for example, by a service service, for example a breakdown company, which thus advantageously receives the information relating to the unsuccessful sensor calibration, whereupon the service service can carry out suitable measures.
- the service may send a repair vehicle to the vehicle.
- several other servers can be provided, which can be operated, for example, by the vehicle manufacturer and the service.
- the vehicle component is a vehicle system which can be operated by means of the sensor data and which is deactivated in the event of unsuccessful sensor calibration.
- the controller deactivates the vehicle system if the sensor calibration is unsuccessful.
- the vehicle component may be a driver assistance system.
- a driver assistance system in the sense of the present invention designates in particular a system which partially autonomously or autonomously engages in a drive system and / or a control system, for example gas and / or brake and / or clutch, and / or a steering system and / or signaling devices of the vehicle Alternatively or additionally, a warning can be issued by a suitable human-machine interface to the driver shortly before or during critical driving situations.
- a driver assistance system can, for example, be a system which receives data from video cameras and determines a lane based on the data and when the vehicle leaves the lane involuntarily returns to this lane. tonomously returns.
- a system may be referred to in English as a "lane-keeping support” (LKS) system, which is also referred to as a lane keeping assistance system in German.
- LLS lane-keeping support
- the driver assistance system can also be a traffic sign recognition system that can determine the prescribed speed on the basis of visual environment sensor systems comprising, for example, a video camera.
- the driver assistance system is preferably an object detection system which can detect and classify objects by means of visual sensors such as a video camera, for example.
- a plurality of driver assistance systems may be provided, which may be formed the same or different.
- the driver assistance system is deactivated in an unsuccessful sensor calibration, this can not perform any actions, ie interventions in a vehicle operation. If the driver assistance system were not deactivated, it could perform appropriate actions based on uncalibrated sensor data, which could lead to critical situations. For example, the system could brake too early or too late because the information underlying this decision is incorrect. In particular, the driver assistance system could output incorrect information to the driver. For example, a traffic sign recognition system based on the uncalibrated sensor data could output a wrongly prescribed speed to the driver.
- the controller controls the vehicle system, in particular the driver assistance system, in such a way that a corresponding functionality is provided to a limited extent.
- the vehicle component is a navigation system for displaying a location of a workshop on a digital map.
- the vehicle component is a navigation system for displaying a location of a workshop on a digital map.
- the position of a workshop in particular a nearest workshop relative to a current vehicle position, is displayed on the digital map of the navigation system.
- the driver advantageously receives the information about where the workshop, in particular the nearest workshop, is located and can if necessary control it immediately, in order to have a sensor calibration performed there. It can preferably be provided that a route to the workshop is displayed on the digital map.
- the error message is sent to the workshop, in particular automatically sent to the workshop.
- the workshop can prepare in an advantageous manner for the upcoming sensor calibration.
- an electronic calendar of a driver of the vehicle is compared with an electronic workshop calendar of the workshop, in particular automatically adjusted to find an overlapping time interval for a sensor calibration or for a sensor repair.
- An electronic calendar of the driver can be, in particular, an electronic calendar, as implemented, for example, in a smartphone.
- the unsuccessful sensor calibration is determined by comparing the calibration data to a predetermined calibration threshold and determining a predetermined deviation between the calibration data and the calibration threshold.
- the unsuccessful sensor calibration is determined by detecting an environmental sensor error signal of the environmental sensor.
- an error is detected in the environment sensor system itself.
- Such an error may be, for example, a mechanical and / or electrical and / or physical error.
- the environmental sensor system itself carries out a diagnostic procedure and outputs a surrounding sensor error signal if the result is negative. As a result, it is signaled in an advantageous manner that the environment sensor is working incorrectly. Although a theoretical calibration is possible here too, such a calibrated sensor still can not provide correct sensor data due to its faulty operation.
- further sensor data are sent to the server for checking the sensor calibration that has been carried out.
- a further vehicle environment is sensed.
- the corresponding sensor data are then sent again to the server, which can check the other sensor data based on the reference sensor data.
- a successful sensor calibration can be assumed.
- From a predetermined deviation of the further sensor data relative to the reference sensor data can be assumed in particular by an unsuccessful sensor calibration.
- further appropriate calibration data are preferably formed and sent to the environment sensor for further sensor calibration.
- a plurality of vehicle components may be provided.
- the controller can control a plurality of vehicle components, in particular simultaneously or sequentially.
- the vehicle components may preferably be the same or different.
- a communication between the environment sensor and the external server or the further server is performed, for example, by means of a C2I method.
- C2I stands for the English expression "car to infrastructur”.
- a C2l communication method refers to a communication method from a vehicle to an infrastructure or a physical object, which is not a vehicle, such as a signaling system or a base station.
- a communication can also be carried out by means of a mobile radio communication method.
- a mobile radio communication method can be the "long-term evolution" (LTE) communication method .
- LTE long-term evolution
- wireless communication methods can also be used to the other server.
- the calculations to be carried out relating to the sensor calibration are carried out based on the calibration data in the server, that is, externally from the vehicle.
- the calculations to be performed are carried out internally in the vehicle by means of a corresponding calculation device, for example by means of a computer.
- a combination of internal and external calculation can be provided. This means in particular that the calculations to be performed are partly carried out externally and partly internally.
- 1 shows a device for calibrating an environmental sensor
- 3 shows a system for calibrating an environmental sensor
- 4 shows a vehicle
- Fig. 5 shows the vehicle of FIG. 4 on a road.
- the device 101 for calibrating an environment sensor for sensory detection of a vehicle environment of a vehicle.
- the device 101 comprises a transmitter 103 for transmitting sensor data formed by the environmental sensor, which correspond to a vehicle environment.
- the sensor data are sent to a server arranged externally of the vehicle, so that it can advantageously check the sensor data.
- the apparatus 101 further includes a receiver 105 for receiving sensor calibration data formed by the server based on the sensor data and reference sensor data corresponding to a reference vehicle environment associated with the vehicle environment.
- the device 101 comprises a controller 107 for controlling a vehicle component. Furthermore, an error signal image 109 is provided, which forms an error signal in case of unsuccessful calibration and sends it to the controller 107.
- the controller 107 is further configured, after receiving the corresponding error signal, to control the vehicle component.
- FIG. 2 shows a flow chart of a method for calibrating an environment sensor for sensory detection of a vehicle environment of a vehicle.
- sensor data formed by the environmental sensor and corresponding to a vehicle environment are sent to an external server for checking.
- the server sends calibration data to the environment sensor.
- the calibration data is formed based on the sensor data and reference sensor data, the reference sensor data corresponding to a vehicle environment associated with the reference vehicle environment.
- a step 205 if the sensor calibration is unsuccessful, an error signal is sent to a controller, whereupon it then controls a vehicle component according to a step 207.
- the controller may control a signaling device so that it signals to a driver that the sensor calibration was unsuccessful.
- an acoustic and / or graphic or visual and / or haptic signaling to the driver may preferably be provided.
- the controller controls a transmitter to send the information regarding the unsuccessful sensor calibration to the external server and / or to one or more other external servers.
- a further external server may be available from or operated by a vehicle manufacturer or a service provider, in particular a breakdown service.
- the controller controls a navigation system so that the navigation system displays a position of a workshop on a digital map.
- the driver thus advantageously receives the information directly indicates where a workshop is to calibrate the sensor.
- the controller controls a vehicle system, in particular a driver assistance system.
- the controller deactivates the vehicle system, preferably the driver assistance system.
- the vehicle system can no longer provide corresponding functionality.
- the controller controls the vehicle system, in particular the driver assistance system, in such a way that a corresponding functionality is provided to a limited extent.
- the vehicle system can no longer provide its full functionality, but only limited functions.
- the driver assistance system no longer autonomously brakes or accelerates and / or steers, but only signals to the driver that it would have made an autonomous intervention to the specific driving situation.
- the aforementioned vehicle systems are in particular systems, control devices or components of the vehicle which operate with the sensor data of the environment sensor. This means, in particular, that these systems are operated based on the sensor data. This means, in particular, that the systems in a corresponding decision-making process use the sensor data in particular as the basis for a decision-making choice.
- FIG. 3 shows a system 301 for calibrating an environmental sensor for detecting a vehicle surroundings of a vehicle by sensor.
- the system 301 comprises the device 101 according to FIG. 1.
- the system 301 comprises a server 303 comprising a database 305 in which reference vehicle surroundings corresponding reference sensor data are stored.
- the server 303 has a corresponding transmitter and a corresponding receiver, which are not shown in FIG. 3 for the sake of clarity.
- the vehicle 401 has a driver assistance system 403.
- the driver assistance system 403 comprises a sensor system 405 with an environment sensor 407.
- the environment sensor system 405 has a plurality of environment sensors 407.
- the plurality of environment sensors 407 may be formed in particular the same or different.
- the vehicle 401 has a plurality of driver assistance systems, which may be formed in particular the same or different.
- the vehicle 401 comprises the device 101 according to FIG. 1.
- server 303 with the database 305 according to FIG. 3 is also shown.
- the environment sensor 407 of the environmental sensor system 405 senses a vehicle environment of the vehicle 401.
- the corresponding sensor data are sent by the transmitter 103 to the server 303. He checks the send- soraries by comparing them with the reference sensor data stored in the database 305. Based on a result of this comparison, calibration data is formed, which is sent from the server 303 to the receiver 105 of the device 101.
- a sensor calibration is then carried out, wherein in the case of an unsuccessful sensor calibration it can be provided, in particular, that the error signal image 109 forms a corresponding error signal and sends it to the controller 107.
- the controller 107 will thereupon deactivate the driver assistance system 403 or, in particular, limit its functionality. This means, in particular, that the driver assistance system 403 can no longer provide its full functionality.
- the controller 107 may control other vehicle components, in particular further driver assistance systems, in particular deactivate or limit their functionality.
- FIG. 5 shows the vehicle 401 according to FIG. 4 on a road 503.
- the device 101 and the driver assistance system 403 are not shown in FIG. 5 for the sake of clarity.
- the vehicle 401 detects a vehicle environment, which is identified here by a triangle with the reference numeral 505.
- the surroundings sensor 407 detects, for example, a stationary physical object 507 and a branch 509.
- the dimensions of the detected objects are determined by means of the environment sensor 407.
- the surroundings sensor 407 detects a width, a height, and a depth of the stationary object 507.
- the surroundings sensor 407 also detects a width of the road 503, the branch 509, and corresponding lanes 503a and 503b of the road 503 indicated by a dashed line Lane boundary line 510 are separated from each other.
- a respective width of the lanes 503a, 503b, the road 503 and the branch 509 is indicated schematically in FIG. 5 by means of a corresponding double arrow with the reference numeral 51 1.
- the surroundings sensor 407 also detects, in particular, a relative position of the individual objects detected relative to one another, that is to say, in particular, the corresponding distances from one another.
- the aforementioned information that is the dimensions, the positions and in particular the relative positions are encompassed by the sensor data.
- This sensor data is then sent to the server 303, which is not shown in FIG. 5 for the sake of clarity.
- This compares the dimensions and the positions, in particular the relative positions, with the reference sensor data, which include reference dimensions and reference positions, in particular relative reference positions, of the detected objects. From a corresponding difference, corresponding calibration parameters are then formed, which are sent back to the vehicle 401 as calibration data.
- a calibration of the surroundings sensor 407 can be carried out, wherein, in the case of unsuccessful calibration, provision may be made in particular for the driver assistance system 403 to be deactivated.
- quality data or quality factors are assigned or integrated in the database for the objects and the corresponding reference sensor data. This means, in particular, that a statement is made as to how good or of what quality the reference sensor data are. These quality factors are then preferably used for the calculation of the calibration data.
- the invention particularly includes the idea of providing a calibration method for an environment sensor, wherein the environment sensor forms sensor data which are compared with reference sensor data of a database. If, for example, a difference is determined here, corresponding calibration parameters are calculated based thereon. By means of these calibration parameters, a sensor calibration is then performed. But is a correction of the deviation, so a sensor calibration, not possible or no longer possible by means of the calibration data, because for example, the deviations are too large or there is a mechanical and / or electrical and / or physical error in the system or in the environmental sensor system, Thus, an error signal is formed and sent to a controller, which then controls a vehicle component.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Mathematical Physics (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
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Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011084264A DE102011084264A1 (de) | 2011-10-11 | 2011-10-11 | Verfahren und Vorrichtung zum Kalibrieren eines Umfeldsensors |
PCT/EP2012/066518 WO2013053528A1 (de) | 2011-10-11 | 2012-08-24 | Verfahren und vorrichtung zum kalibrieren eines umfeldsensors |
Publications (1)
Publication Number | Publication Date |
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EP2766881A1 true EP2766881A1 (de) | 2014-08-20 |
Family
ID=46889007
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12762232.2A Withdrawn EP2766881A1 (de) | 2011-10-11 | 2012-08-24 | Verfahren und vorrichtung zum kalibrieren eines umfeldsensors |
Country Status (5)
Country | Link |
---|---|
US (1) | US20150066412A1 (de) |
EP (1) | EP2766881A1 (de) |
CN (1) | CN103946897B (de) |
DE (1) | DE102011084264A1 (de) |
WO (1) | WO2013053528A1 (de) |
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CN103946897A (zh) | 2014-07-23 |
US20150066412A1 (en) | 2015-03-05 |
CN103946897B (zh) | 2016-12-07 |
WO2013053528A1 (de) | 2013-04-18 |
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