WO2019154549A1 - Système et procédé de détection d'un risque de collision entre un véhicule automobile et un objet secondaire situé sur les voies de circulation adjacentes audit véhicule lors d'un changement de voie - Google Patents
Système et procédé de détection d'un risque de collision entre un véhicule automobile et un objet secondaire situé sur les voies de circulation adjacentes audit véhicule lors d'un changement de voie Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 13
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- 230000006870 function Effects 0.000 claims description 9
- 230000008447 perception Effects 0.000 claims description 6
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Classifications
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- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/08—Active safety systems predicting or avoiding probable or impending collision or attempting to minimise its consequences
- B60W30/095—Predicting travel path or likelihood of collision
- B60W30/0953—Predicting travel path or likelihood of collision the prediction being responsive to vehicle dynamic parameters
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
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- B60W30/09—Taking automatic action to avoid collision, e.g. braking and steering
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- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
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- B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
- B60R21/0132—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to vehicle motion parameters, e.g. to vehicle longitudinal or transversal deceleration or speed value
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- B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
- B60R21/0132—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to vehicle motion parameters, e.g. to vehicle longitudinal or transversal deceleration or speed value
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Definitions
- the present invention relates to the field of driving aids to driving a vehicle and to a secondary object located on the traffic lanes adjacent to said vehicle when changing lanes. a motor vehicle, including obstacle avoidance systems.
- the invention relates to methods and systems for detecting a risk of an imminent collision between a vehicle located on a main traffic lane with an object, mobile or immobile, located on the traffic lanes adjacent to the main lane. the change of track of the said vehicle.
- the driver may misjudge the distance between his vehicle and an object, mobile or immobile, located on an adjacent lane, which may lead to a frontal collision with said object.
- Some motor vehicles are now equipped with active safety devices capable of evaluating their trajectory and recognizing the environment in order to determine a risk of collision depending on the situation. Actions can then be undertaken automatically or in sharing with the driver of the vehicle to keep the vehicle in its lane.
- the object of the present invention is therefore to provide a method and system for detecting an imminent collision risk with an object, mobile or stationary, located on tracks adjacent to the main track.
- the object of the invention is a system for detecting a risk of collision between a motor vehicle and a secondary object located on traffic lanes adjacent to the main traffic lane of said motor vehicle, in the event of a lane change of said vehicle.
- said motor vehicle comprising detection means comprise in particular at least one perception sensor, for example an infrared camera, directed on the main track at the front of the vehicle for acquiring the coefficients of the lines of track limits necessary for the virtual reconstruction of the main track, and at least one frontal or side radar to detect the coordinates of each secondary object located in the field of view of the radar.
- the collision risk detection system comprises an object detection module in a determined danger zone comprising a module for calculating a real distance between the motor vehicle and each object detected by the radar corresponding to the length of the vehicle. 'a segment between two points, whatever the form of the track, in a straight line or curve, a module for determining a danger zone according to the lines of the main track and the width of the main track, and a verification module, for each object and detected by the radar, if its coordinates are in the previously determined danger zone and transmits to a calculator a flag value for each object detected in the danger zone.
- the actual distance is derived from a transformation of the distance transmitted by the radar corresponding to the distance as the crow flies between the motor vehicle and each object detected by the radar.
- the flag is, for example a binary value of true or false type associated with the channel concerned, true designating the presence of an object on the adjacent lane, false designating the absence of an object on the adjacent lane.
- the collision detection system further comprises a time estimation module before collision, called “Time to collision” in Anglo-Saxon terms.
- the system can detect an object on the adjacent lanes to the right and left of the main track on which the motor vehicle is traveling and calculate a real distance between a motor vehicle and an object regardless of the shape of the driving lane. , rectilinear or curved.
- the pre-collision time estimation module comprises a module for calculating an angle between the motor vehicle and the detected object, assuming that the trajectory of the object is parallel to the main track, a module projecting the relative velocities transmitted by the radar on the road axis to obtain a relative speed that follows the road in order to exploit these data whatever the speed of the road, and a module for calculating the time before collision for each object detected by the radar for each obj and detected according to the actual distance and the relative speed.
- the danger zone comprises a first zone portion delimited by two lines substantially parallel to each other which follow the traffic lane and transversely spaced from a first distance calculated according to the widths of adjacent lanes from the camera, or as a function of a reference lane width, and a second zone portion delimited by two lines, inclined towards each other with respect to the first lines and spaced transversely a second distance smaller than the first distance to reduce the radar detection errors over long distances.
- the lateral offset of the detected object is increased before being considered to be situated in the danger zone.
- the total length of the danger zone is fixed regardless of the shape of the taxiway of the vehicle, and predetermined in the computer by the manufacturer.
- the system comprises in addition to a filtering module of the objects detected by the radar in order to identify the most critical of them according to the flags of presence of objects in the danger zone and times before collision.
- the filtering module of the detected objects comprises a first filter retaining only the detected objects whose flag is true, that is to say, the objects located in the danger zone, a module for determining the object located in the most critical danger zone depending on the distance to the vehicle and / or time before collision, and a time-to-collision comparison module of the most critical object with a threshold value.
- the filtering module of the detected objects could include a module retaining only moving objects.
- the system may also include an alert module transmitting a presence warning signal of a critical obj to the driver by indicating the time before collision with the most critical object when the time before collision with the object the most critical is less than or equal to said threshold value.
- the system thus makes it possible to isolate an obj and considered as critical and to emit an alert and / or intervention signal in case of risk presence of a obj and critic and thus an imminent risk of collision with said targeted object.
- the invention relates to a motor vehicle comprising a computer and a system for detecting a risk of collision as described above between said motor vehicle and a secondary object located on the traffic lanes adjacent to the lane principal of the said motor vehicle, in the event of a change of lane of the said vehicle.
- the invention relates to a method for detecting a risk of collision between a motor vehicle and a secondary object located on the traffic lanes adjacent to the main traffic lane of said motor vehicle, said motor vehicle comprising detection means comprise in particular at least one perception sensor, for example an infrared camera, directed on the main track at the front of the vehicle, making it possible to acquire the coefficients of the lines of track limits necessary for the virtual reconstruction of the main track , and at least one front or side radar for detecting the coordinates of each secondary object located in the field of view of the radar,
- detection means comprise in particular at least one perception sensor, for example an infrared camera, directed on the main track at the front of the vehicle, making it possible to acquire the coefficients of the lines of track limits necessary for the virtual reconstruction of the main track , and at least one front or side radar for detecting the coordinates of each secondary object located in the field of view of the radar,
- the method detects the presence of objects in a given danger zone, and it is estimated time before collision, called “Time to collision” in Anglo-Saxon terms between the vehicle and a detected object.
- the real distance between the motor vehicle and each object is calculated and detected by the radar resulting from a transformation of the distance transmitted by the radar corresponding to the flight distance. of bird between the motor vehicle and each object detected by the radar, the actual distance corresponding to the length of an arc between two points regardless of the shape of the track, online right or curve, a danger zone is determined according to the lines of the main track and the width of the main track, and for each object detected by the radar, it is checked whether its coordinates are in the determined danger zone and transmitting to the calculator a flag value for each obj and detected in the danger zone.
- the actual distance is derived from a transformation of the distance transmitted by the radar corresponding to the distance as the crow flies between the motor vehicle and each object detected by the radar.
- the flag is, for example a binary value of true or false type associated with the channel concerned, true designating the presence of an object on the adjacent lane, false designating the absence of an object on the adjacent lane.
- the time estimation step before collision it is possible to calculate an angle between the motor vehicle and the detected object, assuming that the trajectory of the object is parallel to the main track, it is possible to calculate the relative speed as the projection on the axis of the road relative velocities transmitted by the radar to exploit these data regardless of the pace of the road, and it can calculate the time before collision for each object detected by the radar for each obj and detected based on actual distance and relative speed.
- the most critical detected object is determined by filtering the detected objects whose flag is true, that is, the objects in the danger zone, and determining the most critical of them. depending on the distance to the vehicle and / or the time before collision.
- FIG. 1 shows schematically a system for detecting a risk of collision between a motor vehicle and a secondary object according to the invention
- FIG. 2 diagrammatically illustrates the danger zone determined by the collision risk detection system of FIG. 1;
- FIG. 3 illustrates the steps of a method for detecting a collision risk according to the invention implemented by the system of FIG. 1.
- FIG. 1 very schematically shows a system for detecting a collision risk between a motor vehicle and a secondary object located on the traffic lanes adjacent to the main traffic lane of said motor vehicle, in case of lane change of said vehicle, i.e. when said vehicle moves from the main traffic lane to an adjacent traffic lane.
- a stationary object such as a safety barrier or a mobile object, such as a secondary motor vehicle moving in the same direction or in the opposite direction to the main vehicle.
- the collision risk detection system 10 comprises a data recovery module 12 from detection means (not shown) provided on the motor vehicle.
- the detection means comprise in particular at least one perception sensor, for example an infrared camera, directed on the main track at the front of the vehicle, making it possible to acquire the coefficients a, b, c, d of the necessary lines of track limits. virtual reconstruction of the main track.
- at least one perception sensor for example an infrared camera
- the detection means also comprise at least one frontal or lateral radar (not shown) for detecting the coordinates X, Y of each obj and secondary located in the field of vision of the radar.
- the collision risk detection system 10 further comprises a module 20 for detecting objects in a determined danger zone Z and a time-of-collision estimation module 30, called "Time to collision" in English terms. -saxons.
- the module 20 for detecting objects in a determined danger zone Z comprises a module 22 for reconstructing the Yline road equation from the coefficients a, b, c, d according to FIG. the following equation:
- the module 20 for detecting objects in a determined danger zone Z then comprises a module 24 for calculating the actual distance LAB between the motor vehicle and each object detected by the radar.
- the actual distance LAB is derived from a transformation of the distance X transmitted by the radar corresponding to the distance as the crow flies between the motor vehicle and each object detected by the radar.
- the actual distance LAB corresponds to the length of an arc between two points A, B according to the following Cartesian equation:
- XB the position on the same axis of the object detected by the radar
- Yline ' the derivative of Yline
- the actual distance LAB thus calculated corresponds to the length of a segment between two points A and B, regardless of the shape of the path, in a straight or curved line.
- the module 20 for detecting objects in a determined danger zone Z comprises a module 26 for determining a danger zone Z.
- Hazard zone Z illustrated in detail in FIG. 2, comprises a first zone portion Z 1 delimited by two lines L 1, substantially parallel to one another, which follow the taxiway, the two lines L 1 being transversely spaced from each other. a distance D i calculated as a function of the widths of adjacent lanes coming from the camera, or as a function of a reference lane width.
- the danger zone Z comprises a second zone portion Z2 delimited by two lines L2 inclined towards each other with respect to the first lines L 1 so as to form a bevel shape.
- the two lines L2 are transversely spaced by a distance D2 to reduce the radar detection errors over long distances. Indeed, by reducing the distance between the lines of the second danger zone Z2, the lateral offset Y2 of the detected object is increased before being considered to be situated in the danger zone Z.
- the total length of the danger zone Z is fixed regardless of the shape of the traffic lane of the vehicle, and predetermined in the computer by the manufacturer.
- the object detection module 20 comprises a verification module 28, for each object and detected by the radar, if its coordinates (LAB, Y) lie in the previously determined danger zone Z.
- a flag F or flag in Anglo-Saxon terms is raised.
- the flag is, for example a binary value of true or false type associated with the channel concerned, true designating the presence of an object on the adjacent lane, false designating the absence of an object on the adjacent lane.
- the TTC time-collision estimation module 30 comprises a module 32 for calculating an angle a 0 bj and between the motor vehicle and the detected object, assuming that the trajectory of the obj and is parallel to the main track.
- the angle at 0 bj and is defined according to the following equation: cc bjet dx 2 + cx + b (Eq.5)
- the module 30 further comprises a module 34 for transforming the relative velocities Vreix, Vreiy at x and y, transmitted by the radar to exploit this data regardless of the pace of the road.
- the estimation module 30 of the TTC finally comprises a module 34 for calculating the time before collision TTC for each object and detected by the radar for each object detected according to the following equation:
- the collision detection system 10 further comprises a module 40 for filtering the objects detected by the radar in order to identify the most critical of them.
- the module 40 for filtering the detected objects thus receives a set of vectors Fi flags of presence of objects in the danger zone Z, as well as the times before TTCi collision of the detected objects, with i an integer between 1 and n.
- the filtering module 40 comprises a first filter 42 retaining only the detected objects whose flag is true, that is to say, the objects located in the danger zone Z.
- the module 40 for filtering the detected objects could comprise a module retaining only moving objects.
- the filter module 40 comprises a module 44 for determining the object located in the most critical zone of danger Z as a function of the distance LAB with the vehicle and / or the time before collision TTC.
- the filtering module 40 then comprises a module 46 for comparing the time to collision TTC of the most critical object with a threshold value S TTC. If the collision time TTC with the most critical object is less than or equal to said threshold value S TTC, an alert module 50 transmits a presence alert signal of a critical object to the driver indicating the time before collision TTC with the obj and the most critical.
- FIG. 3 represents a flowchart for implementing a method 60 for detecting a risk of collision between a motor vehicle and a secondary object located on the traffic lanes adjacent to the main traffic lane of said motor vehicle, in case lane changeover from the main track to an adjacent lane.
- a first step 62 data from detection means (not shown) provided on the motor vehicle are recovered.
- the detection means comprise, in particular, at least one perception sensor, for example an infrared camera, directed on the main track at the front of the vehicle, making it possible to acquire the coefficients a, b, c, d of the line limit lines. necessary for the virtual reconstruction of the main track.
- at least one perception sensor for example an infrared camera
- the detection means also comprises at least one frontal or lateral radar (not shown) for detecting the X, Y coordinates of each secondary object and located in the field of view of the radar.
- step 90 the most critical detected object is determined and finally, in step 100, an alert signal is emitted in case of presence of an obj and critical.
- the actual distance LAB between the motor vehicle and each object is calculated and detected by the radar resulting from a transformation of the distance X transmitted by the corresponding radar. at the distance as the crow flies between the motor vehicle and each object detected by the radar.
- the actual distance LAB corresponds to the length of an arc between two points A, B according to equation 2:
- the actual distance LAB thus calculated corresponds to the length of a segment between two points A and B, regardless of the shape of the path, in a straight line or a curve.
- a danger zone Z illustrated in detail in FIG. 2, is determined, comprising a first zone portion Z 1 delimited by two lines L 1 substantially parallel to each other which follow the traffic lane. , the two lines L 1 being transversely spaced by a distance D 1 or offset calculated in depending on the width of adjacent channels from the camera, or based on a reference channel width.
- the danger zone Z comprises a second zone portion Z2 delimited by two lines L2 inclined towards each other with respect to the first lines L 1 so as to form a bevel shape.
- the two lines L2 are transversely spaced by a distance D2 to reduce the radar detection errors over long distances.
- the total length of the danger zone Z is fixed regardless of the shape of the traffic lane of the vehicle, and predetermined in the computer by the manufacturer.
- step 78 for each object detected by the radar, it is checked whether its coordinates (LAB, Y) lie in the danger zone Z previously determined in step 76.
- a flag F or flag in Anglo-Saxon terms is raised.
- the flag is, for example a binary value of true or false type associated with the channel concerned, true designating the presence of an object on the adjacent lane, false designating the absence of an object on the adjacent lane.
- step 82 is calculated at an angle a 0 bj and between the motor vehicle and the detected object, in FIG. assuming that the trajectory of the object is parallel to the main track.
- the angle 0 bj and is defined using the following equation: (. Eq 5)
- Vre ix route that follows the route according to the following equation:
- step 90 of determining the most critical detected object in step 92, the detected objects whose flag is true, that is, the objects located in the danger Z.
- step 94 the object located in the most critical danger zone Z is determined as a function of the distance L AB with the vehicle and / or the time before collision TTC and is compared, in step 96 , the time before collision TTC of the most critical object with a threshold value S TTC . If the time before collision TTC with the most critical object is lower than or equal to said threshold value S TTC , one emits, in step 100, a signal of alert of presence of a critical object to the driver indicating time before collision TTC with the most critical object.
- the present invention makes it possible to isolate an obj and considered as critical and to emit an alert and / or intervention signal in the event of the presence of a critical object.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Transportation (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Remote Sensing (AREA)
- Radar, Positioning & Navigation (AREA)
- Human Computer Interaction (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mathematical Physics (AREA)
- Traffic Control Systems (AREA)
- Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
Description
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Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR112020013885-1A BR112020013885A2 (pt) | 2018-02-08 | 2018-12-18 | sistema e processo de detecção de um risco de colisão entre um veículo automotivo e um objeto secundário situado sobre vias de circulação adjacentes à via de circulação principal do dito veículo automotivo, em caso de mudança de via do dito veículo automotivo, e, veículo automotivo |
CN201880088968.0A CN111712415A (zh) | 2018-02-08 | 2018-12-18 | 用于在变换车道时检测机动车辆与位于同所述车辆相邻的行车道中的第二物体之间的碰撞风险的系统和方法 |
US16/964,790 US11577721B2 (en) | 2018-02-08 | 2018-12-18 | System and method for detecting a risk of collision between a motor vehicle and a secondary object located in the traffic lanes adjacent to said vehicle when changing lanes |
KR1020207025635A KR20200115640A (ko) | 2018-02-08 | 2018-12-18 | 차선 변경시 차량과 인접한 차선에 위치한 2차 물체와 차량 간의 충돌 위험을 검출하기 위한 시스템 및 방법 |
JP2020542306A JP7279053B2 (ja) | 2018-02-08 | 2018-12-18 | 車線を変更するときに、自動車両と、車両の隣の走行車線にある2次物体との間の衝突リスクを検知するためのシステムおよび方法 |
EP18830236.8A EP3749561A1 (fr) | 2018-02-08 | 2018-12-18 | Système et procédé de détection d'un risque de collision entre un véhicule automobile et un objet secondaire situé sur les voies de circulation adjacentes audit véhicule lors d'un changement de voie |
Applications Claiming Priority (2)
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FR1851054A FR3077547A1 (fr) | 2018-02-08 | 2018-02-08 | Systeme et procede de detection d'un risque de collision entre un vehicule automobile et un objet secondaire situe sur les voies de circulation adjacentes audit vehicule lors d'un changement de voie |
FR1851054 | 2018-02-08 |
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WO2019154549A1 true WO2019154549A1 (fr) | 2019-08-15 |
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PCT/EP2018/085612 WO2019154549A1 (fr) | 2018-02-08 | 2018-12-18 | Système et procédé de détection d'un risque de collision entre un véhicule automobile et un objet secondaire situé sur les voies de circulation adjacentes audit véhicule lors d'un changement de voie |
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US (1) | US11577721B2 (fr) |
EP (1) | EP3749561A1 (fr) |
JP (1) | JP7279053B2 (fr) |
KR (1) | KR20200115640A (fr) |
CN (1) | CN111712415A (fr) |
BR (1) | BR112020013885A2 (fr) |
FR (1) | FR3077547A1 (fr) |
WO (1) | WO2019154549A1 (fr) |
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CN113257036A (zh) * | 2020-02-13 | 2021-08-13 | 宁波吉利汽车研究开发有限公司 | 一种车辆碰撞预警方法、装置、设备和存储介质 |
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KR102496518B1 (ko) | 2021-01-26 | 2023-02-07 | 주식회사 에이치엘클레무브 | 차량 안전주행 제어장치 및 그 방법 |
FR3120040B1 (fr) | 2021-02-19 | 2023-02-24 | Renault Sas | Procédé d’activation d’un système d’évitement d’obstacle pour véhicule automobile |
FR3120039A1 (fr) | 2021-02-19 | 2022-08-26 | Renault S.A.S | Procédé d’évitement d’obstacles |
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CN111712415A (zh) | 2020-09-25 |
JP2021513159A (ja) | 2021-05-20 |
US11577721B2 (en) | 2023-02-14 |
FR3077547A1 (fr) | 2019-08-09 |
US20210053560A1 (en) | 2021-02-25 |
JP7279053B2 (ja) | 2023-05-22 |
KR20200115640A (ko) | 2020-10-07 |
BR112020013885A2 (pt) | 2020-12-01 |
EP3749561A1 (fr) | 2020-12-16 |
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