EP3755595A1 - Detection d'irregularites sur les routes - Google Patents
Detection d'irregularites sur les routesInfo
- Publication number
- EP3755595A1 EP3755595A1 EP19708132.6A EP19708132A EP3755595A1 EP 3755595 A1 EP3755595 A1 EP 3755595A1 EP 19708132 A EP19708132 A EP 19708132A EP 3755595 A1 EP3755595 A1 EP 3755595A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- road
- vehicle
- irregularity
- characteristic
- processing unit
- 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- Withdrawn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
- 238000012545 processing Methods 0.000 claims abstract description 32
- 230000001133 acceleration Effects 0.000 claims abstract description 19
- 238000001514 detection method Methods 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000013016 damping Methods 0.000 claims description 9
- 230000005484 gravity Effects 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 208000031872 Body Remains Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- 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
- G01C21/3697—Output of additional, non-guidance related information, e.g. low fuel level
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
- B60G17/016—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input
- B60G17/0165—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input to an external condition, e.g. rough road surface, side wind
-
- 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
- B60W40/02—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 related to ambient conditions
- B60W40/06—Road conditions
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V20/00—Scenes; Scene-specific elements
- G06V20/50—Context or environment of the image
- G06V20/56—Context or environment of the image exterior to a vehicle by using sensors mounted on the vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
- B60G2400/10—Acceleration; Deceleration
- B60G2400/102—Acceleration; Deceleration vertical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
- B60G2400/20—Speed
- B60G2400/202—Piston speed; Relative velocity between vehicle body and wheel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
- B60G2400/25—Stroke; Height; Displacement
- B60G2400/252—Stroke; Height; Displacement vertical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
- B60G2400/60—Load
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
- B60G2400/60—Load
- B60G2400/61—Load distribution
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
- B60G2400/80—Exterior conditions
- B60G2400/82—Ground surface
- B60G2400/821—Uneven, rough road sensing affecting vehicle body vibration
-
- 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
- B60W2420/00—Indexing codes relating to the type of sensors based on the principle of their operation
- B60W2420/40—Photo, light or radio wave sensitive means, e.g. infrared sensors
- B60W2420/403—Image sensing, e.g. optical camera
-
- 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
- B60W2422/00—Indexing codes relating to the special location or mounting of sensors
- B60W2422/40—Indexing codes relating to the special location or mounting of sensors on a damper
-
- 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
- B60W2552/00—Input parameters relating to infrastructure
- B60W2552/35—Road bumpiness, e.g. potholes
-
- 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
- B60W2556/00—Input parameters relating to data
- B60W2556/45—External transmission of data to or from the vehicle
-
- 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
- B60W2556/00—Input parameters relating to data
- B60W2556/45—External transmission of data to or from the vehicle
- B60W2556/55—External transmission of data to or from the vehicle using telemetry
Definitions
- the invention relates to the field of the automobile and more particularly to the management and feedback of information on the quality of roads through the data collected by a vehicle.
- the published patent document DE 10 2014 214 729 A1 discloses a system for detecting irregularities on a road traveled by a vehicle.
- a sensor of the vehicle detects an irregularity
- the vehicle sends this information, along with the position of the vehicle, to a database.
- This is mainly the detection of a pothole.
- This information is incomplete because to assess the quality of a road, the size (depth, width in the direction transverse to the road, length) of the irregularities is important, and in particular to relate to the speeds practiced / practicable on the road in question.
- a speed bump is an irregularity of the road that must be tolerated in the city but an equivalent bump on a portion of the departmental road must not be tolerated.
- the system described in the document mentioned above needs to be improved, and for this purpose, the information collected by the vehicle need to be processed more finely.
- the invention aims to overcome at least one of the disadvantages of the state of the art mentioned above. More particularly, the invention aims to provide a vehicle, as well as a system and a method of processing the information collected by the vehicle that improves the interpretation that can be made irregularities of the road.
- the invention relates to a motor vehicle comprising: a chassis; at least four wheels and their respective damping devices connecting each wheel to the chassis; and means for detecting irregularities of the road traveled by said vehicle; remarkable in that the irregularity detection means comprise sensors for the position, the speed and / or the acceleration of a characteristic point of each of the damping devices, the vehicle further comprising a unit for processing the irregularities. data detected by the detection means, the processing unit being programmed to determine, at any moment, a geometric surface characteristic of the position, speed and / or acceleration characteristic points, the processing unit being also programmed to determine an irregularity information of the road when said geometric surface varies over time, beyond a predetermined threshold.
- the position, the velocity and the acceleration of the characteristic points can be measured in the three directions of the space, by means of known devices, for example accelerometers.
- the parameters of the equation of the geometrical surface are tracked over time and when the derivative of the curve over time of one of these parameters exceeds (in absolute value) a threshold value, it means that the geometrical surface changes abruptly.
- the threshold value can be fixed, obtained empirically during vehicle development, customizable, variable by learning, or variable depending on the context.
- an irregularity is by definition an event different from the majority of the road that is traveled, so depending on the context, a small hump can be tolerable (on a broken forest path for example) while the same bump does not take place to be on the highway.
- the geometric surface can therefore vary "gently", for example in curves or inclined road, without generating an identification of a non-existent irregularity.
- Raad Irregularity Information means any type of data relating to the irregularity of the road.
- the roughness information of the road may be information of presence of the irregularity, position information, type of irregularity, etc.
- the detection means comprise weight sensors measuring the weight carried by each of the wheels, the processing unit being programmed to receive the weight data, and to deduce a weight relative displacement of the characteristic points and / or torsional moment of the frame around the longitudinal axis of the vehicle and passing through its center of gravity.
- the characteristic geometrical surface is the average geometrical plane of the set of characteristic points.
- a geometric plane is defined by three points.
- the four characteristic points may be coplanar, if they are chosen to correspond to identical locations on each damper.
- the four points are no longer coplanar.
- an average plane which is the plane that minimizes the distances from each of the points to the plane, in the least squares sense.
- the characteristic geometric surface is the elliptical paraboloid with less deviation from the characteristic points.
- each characteristic point is the respective center of gravity of a wheel, or corresponds to a point which at all times has the same speed and acceleration in the three directions as the center of gravity of each wheel. , respectively.
- the characteristic point can be theoretical, as is the center of gravity of a wheel, or physical.
- Properly positioned sensors allow to deduce the position, speed and acceleration of such points. These sensors may for example be positioned on the suspension triangles, or on the rod or the body of the damper.
- the processing unit consolidates the information over a given period of time before and after the detection of an irregularity in order to determine consolidated information over said period of time of the irregularity, in particular the length in the direction of the road.
- the processing unit collects data from a camera to consolidate information related to the detection of an irregularity.
- the cameras allow to observe the profile of the road or the nature of its coating. By combining the data from the camera, it is possible to avoid misinterpreting some of the car's vibrations as road irregularities. For example, it is possible to avoid interpreting as unevenness of the road the white stripes on the ground in relief, the speed bumps or the temporary irregularities (mud, snow, animal remains, etc.) that could occur. find on the road.
- the vehicle's rearview camera can be used for this purpose.
- the vehicle comprises communication means for sending the information relating to the irregularity detected towards a central server which collects data relating to road irregularities provided by several vehicles.
- This information may, if necessary, be accompanied by the geolocation of the vehicle if it is equipped with a navigation system.
- the invention also relates to a method for detecting irregularities of a road, the method being remarkable in that it comprises the following steps: detecting the position, speed and / or acceleration of a characteristic point associated with each of the wheels of a vehicle; the processing of the data thus detected, the processing operation comprising the determination, at any moment, of a geometric surface characteristic of the position, speed and / or acceleration of the characteristic points, and the identification, if the geometrical surface varies with course of time beyond a predetermined threshold of variation, an irregularity on the road.
- the method may further include communicating data related to the detected irregularity to others.
- the invention also relates to a system for detecting irregularities of a road
- a system for detecting irregularities of a road comprising: a motor vehicle with a chassis, at least four wheels and their respective damping devices for connecting each wheel to the chassis, and means for detecting irregularities in the road traveled by the said vehicle; a central server collecting information on the irregularities of the road; and means of communication between the vehicle and the central server; remarkable in that the irregularity detection means comprise sensors for the position, the speed and / or the acceleration of a characteristic point of each of the damping devices; the detected data are sent in real time to the central server via the means of communication, accompanied by the geolocation of the car; the central server further comprising a data processing unit detected by the detection means, the processing unit being programmed to determine, at any moment, a geometric surface characteristic of the position, speed and / or acceleration of the characteristic points; and the processing unit is also programmed to determine an information of irregularity of the road when the geometric surface varies over time, beyond a predetermined threshold.
- the system described here decentralizes the calculation operations by arranging the processing unit at the central server.
- FIG. 2 describes a system according to the invention
- FIG. 1 shows a vehicle 1 according to the invention.
- the vehicle 1 has four wheels 2, 4, 6, 8, each linked to the chassis of the vehicle via a damping device.
- the points E, F, G and H are points of each damper in which an accelerometer is arranged.
- the accelerometers detect the movements of each of the wheels independently.
- a processing unit 10 is provided. This collects the data sent by the accelerometers.
- the vehicle has peripherals such as wireless communication means, a camera and / or a navigation system.
- the peripherals can communicate with the processing unit 10.
- Figure 1 illustrates the x, y, z axes and the center of gravity of the vehicle W.
- FIG. 2 shows a system according to the invention.
- the processing unit which collects the information from the accelerometers and identifies the presence of an irregularity is decentralized.
- This is noted 210 and is integrated or communicates with a central server 200.
- Communication means 120 between the vehicle 100 and the central server 200 are provided.
- Figure 3a shows a geometric surface at a time when the vehicle is traveling on a portion of road without irregularity.
- the points E, F, G and H are located at identical locations on each of the wheels, so that the four points are coplanar in the absence of irregularity.
- the characteristic geometrical surface is the plane P passing through the four points E, F, G and H.
- Figure 3b shows a geometric surface at a moment when the four points E, F, G and H are no longer coplanar.
- the points E, F and G are in the same place (relative to the center of gravity W of the vehicle) as in Figure 2a but the right rear wheel moves vertically so that the point H is moved upwards.
- the characteristic geometrical surface is the plane Q.
- the points E, F, G and H are respectively distant from the plane Q by a value DE, AF, AG and DH.
- a, b, c and d are no longer the same as for the plane P. If the variations of a, b, c and d are significant, that is to say above a certain threshold, it means that the displacement of the rear wheel is significant and that an irregularity on the road is obvious.
- Step 1000 is the detection, at any moment, of the position, speed and / or acceleration of points E, F, G and H.
- Step 2000 is the determination, at any time, of the parameters defining the characteristic geometrical surface.
- the plane can be defined by the parameters a, b, c and d.
- Step 3000 is the monitoring over time of the variations of the parameters a, b, c and d.
- a threshold shown by the dotted line in FIG. 4 at step 3000
- Step 4000 consists of the transmission from the processing unit to third parties of the information of the irregularity, accompanied if necessary by the geolocation of the vehicle at times t 1 and t 2.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Remote Sensing (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Physics (AREA)
- Transportation (AREA)
- Multimedia (AREA)
- Traffic Control Systems (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1851462A FR3078154B1 (fr) | 2018-02-21 | 2018-02-21 | Detection d’irregularites sur les routes |
PCT/FR2019/050178 WO2019162587A1 (fr) | 2018-02-21 | 2019-01-28 | Detection d'irregularites sur les routes |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3755595A1 true EP3755595A1 (fr) | 2020-12-30 |
Family
ID=62816662
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19708132.6A Withdrawn EP3755595A1 (fr) | 2018-02-21 | 2019-01-28 | Detection d'irregularites sur les routes |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3755595A1 (fr) |
FR (1) | FR3078154B1 (fr) |
WO (1) | WO2019162587A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112784814A (zh) * | 2021-02-10 | 2021-05-11 | 中联重科股份有限公司 | 车辆倒车入库的姿态识别方法及输送车倒车入库引导系统 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3124437B1 (fr) * | 2021-06-25 | 2023-10-13 | Renault Sas | Procédé de commande d’un véhicule muni d’au moins une suspension commandée par apprentissage. |
DE102022204127A1 (de) | 2022-04-28 | 2023-11-02 | Psa Automobiles Sa | In Abhängigkeit eines Straßentyps adaptierte Fahrzeugkomponenten |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014201532A1 (de) * | 2014-01-28 | 2015-07-30 | Bayerische Motoren Werke Aktiengesellschaft | Ermittlung der Fahrgeschwindigkeit eines Fahrzeugs |
GB2525839B (en) * | 2014-02-18 | 2017-09-27 | Jaguar Land Rover Ltd | Method of and system for collecting data relating to road irregularities |
DE102014214729A1 (de) | 2014-07-25 | 2016-01-28 | Continental Teves Ag & Co. Ohg | Schlaglocherkennung im Fahrzeug |
FR3039690B1 (fr) * | 2015-07-28 | 2018-12-07 | Psa Automobiles Sa. | Dispositif pour estimer un indicateur d’etat d’une voie de circulation empruntee par un vehicule terrestre |
-
2018
- 2018-02-21 FR FR1851462A patent/FR3078154B1/fr active Active
-
2019
- 2019-01-28 EP EP19708132.6A patent/EP3755595A1/fr not_active Withdrawn
- 2019-01-28 WO PCT/FR2019/050178 patent/WO2019162587A1/fr unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112784814A (zh) * | 2021-02-10 | 2021-05-11 | 中联重科股份有限公司 | 车辆倒车入库的姿态识别方法及输送车倒车入库引导系统 |
CN112784814B (zh) * | 2021-02-10 | 2024-06-07 | 中联重科股份有限公司 | 车辆倒车入库的姿态识别方法及输送车倒车入库引导系统 |
Also Published As
Publication number | Publication date |
---|---|
FR3078154B1 (fr) | 2020-01-17 |
FR3078154A1 (fr) | 2019-08-23 |
WO2019162587A1 (fr) | 2019-08-29 |
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