The present invention relates generally to driver assistance systems for vehicles and, more particularly, to a driver assistance system that utilizes one or more sensors or cameras at a vehicle.
Use of imaging sensors in vehicle imaging systems and/or driver assistance systems is common and known. Examples of such known systems are described in U.S. Pat. Nos. 5,949,331; 5,670,935 and/or 5,550,677, which are hereby incorporated herein by reference in their entireties.
The present invention provides a driver assistance system or vehicle control system that determines, identifies or classifies the type(s) of occupant(s) in the vehicle and adjusts a driving style of the vehicle (when operating in an autonomous or semi-autonomous mode) associated with the determination/identification/classification of occupant(s) in the vehicle. For example, if the system determines that an elderly person or a child or baby is present in the vehicle, the system may, when operating in an autonomous or semi-autonomous mode, control the vehicle in a less aggressive, more conservative manner. The system may learn different control characteristics by processing inputs when an individual is driving the vehicle (when the vehicle is not operating in an autonomous or semi-autonomous mode), such that the system may control the vehicle in a manner similar to that individual's preferences when it is determined that that individual is an occupant in the vehicle. The driving style or mode applied when the system is operating in an autonomous or semi-autonomous mode may also be responsive to other inputs, such as, for example, the geographical location of the vehicle, the current weather conditions at the vehicle, the time of day, and/or the like.
These and other objects, advantages, purposes and features of the present invention will become apparent upon review of the following specification in conjunction with the drawings.
Legend:
10—Vehicle
12—Vision System
14
a-d—Exterior viewing cameras
16—Display device
18—Electronic Control Unit
20—Interior rearview mirror
22—Interior monitoring system
100—Driver behavior learning algorithm
102—Vehicle behavior profile
104—Driver profile
106—Time of day information
108—Location information
110—Occupant type information
112—Vehicle data
114—Weather information
116—World model (surrounding environment information)
118—Similar inputs as during the learning phase
120—Learned behavior data base
121—Driving behavior selection
122—Vehicle control
200—Driver behavior learning state determination
202—Driver behavior leaning routine
204—Erratic driving determination
206—DBL off state
208—DBL stand by state
210—DBL active state
212—DBL non-learning state
214—DBL learning enabled state
A vehicle vision system and/or driver assist system and/or object detection system and/or alert system operates to capture images exterior of the vehicle and may process the captured image data to display images and to detect objects at or near the vehicle and in the predicted path of the vehicle, such as to assist a driver of the vehicle in maneuvering the vehicle in a rearward direction. The vision system includes an image processor or image processing system that is operable to receive image data from one or more cameras and provide an output to a display device for displaying images representative of the captured image data. Optionally, the vision system may provide display, such as a rearview display or a top down or bird's eye or surround view display or the like.
Referring now to the drawings and the illustrative embodiments depicted therein, a vehicle 10 includes an imaging system or vision system 12 that includes at least one exterior facing imaging sensor or camera, such as a rearward facing imaging sensor or camera 14a (and the system may optionally include multiple exterior facing imaging sensors or cameras, such as a forward facing camera 14b at the front (or at the windshield) of the vehicle, and a sideward/rearward facing camera 14c, 14d at respective sides of the vehicle), which captures images exterior of the vehicle, with the camera having a lens for focusing images at or onto an imaging array or imaging plane or imager of the camera (
The system of the present invention provides for learning of different driving style characteristics according to different circumstances. Every driver has a unique driving signature. A system with an artificial intelligence (Al) or machine learning algorithm may find use to firstly learn the driver's driving style upon certain conditions or parameters, see
The system may learn the driving behavior or style associated with the occupants (or characteristics of or types of occupants) present in the vehicle. There may be a certain driving condition without any occupants which may comply to a specific driving style or mode as well. That driving style or mode may be customized or may comprise a blend of modes which have been learned or trained when the vehicle has a driver. The system may additionally learn the driving behavior or style associated with condition parameters, such as time of day, date, season, location (including road type, lane, nation and town), weather, traffic conditions, legislative condition (eventually according road type and national law) and vehicle condition and/or the like.
The system learns the driving style or behavior of a particular occupant or driver of the vehicle, such as when that particular occupant or driver is driving the vehicle (such as when the control or system is operating in a non-autonomous mode and/or in a learning mode). The system with the artificial intelligence (Al) or machine learning algorithm includes three sub-functions as shown in
Driver Behavior Learning (DBL) systems shall, at a minimum, provide the functionality and state transitions shown in
For the same driver the driving signature varies with factors such as “baby on board”, “location”, “time of the day” and/or the like. In Machine Learning this is called “features”. Different machine learning algorithms can be used. For example, the features can be clustered using an “unsupervised” algorithm to assign it to one of the pre-determined clusters (Vehicle Behavior Profiles in this case). Another example is to use a “supervised” algorithm in which the system is “trained” using the features and a label (Vehicle Behavior Profile in this case) associated with each set of these features. The system is then presented with a similar set of features and the system predicts the label. Both these systems can be online, that is, they learn over the period that a driver uses the vehicle. It improves over-time. In another example, a memory based or “one-shot” learning Machine Learning algorithm can be used. This allows the system to learn using a single or very few training features. An “Anomaly Detection” or similar algorithm can also be used to remove outliers. A typical use case would be to ignore erratic driving behavior.
For autonomous vehicles suitable for deployment with the system of the present invention, an occupant of the vehicle may, under particular circumstances, be desired or required to take over operation/control of the vehicle (when the control is operating in the autonomous mode) and drive the vehicle so as to avoid potential hazard for as long as the autonomous system relinquishes such control or driving. Such occupant of the vehicle thus becomes the driver of the autonomous vehicle. As used herein, the term “driver” refers to such an occupant, even when that occupant is not actually driving the vehicle, but is situated in the vehicle so as to be able to take over control and function as the driver of the vehicle (or had been previously functioning as the driver while the control was operating in a learning mode) when the vehicle control system hands over control to the occupant or driver or when the vehicle control system is otherwise not operating in an autonomous mode. When operating in the autonomous mode, the control controls or drives or maneuvers the vehicle without human intervention, while, when operating in the semi-autonomous mode, the occupant controls or drives or maneuvers the vehicle and the control may or may not provide some control or driving assistance (such as, for example, a steering correction for a lane keep assist system, or a braking or speed adjustment for an adaptive cruise control system or the like).
There may be various modes that the vehicle may adapt to in driving style when driving autonomously—from a slower, less aggressive driving style to more aggressive driving, and the reason for having them is that not everyone is willingly to always commute in the slower, less aggressive driving mode. However, automated driving should be always safe in all modes. The system of the present invention takes it to another level by recognizing occupants and adjusting the mode accordingly (these modes may be different from the above non-aggressive and aggressive modes). For example, the system may operate in a less aggressive driving mode responsive to determination that the driver is distracted or is using his or her hands, such as holding a cup of coffee or the like.
One characteristic mode may be the ‘child present in vehicle’—mode. The child present driving behavior learning feature is a part of the driving behavior learning that takes into account the occupants and type of occupants present in the vehicle. The type of occupant or characteristic of the occupant is determined based on biometric characteristics of the occupant (e.g., size, age, etc.) and/or based on activities or other characteristics of the occupant (e.g., holding food or a beverage, etc.). For example, if there is a child present in the vehicle, the driver's driving behavior may be different compared to when there is no child present in the vehicle. When a child (or more than one child) is present in the vehicle, the driver may select a driving style that is less abrupt in braking and accelerating and in changes in positive or negative acceleration, so jerk is minimized. Additionally, the driver may take curves less fast and/or may avoid side accelerations and changes in side accelerations. There may be another different driving style when one or more child or baby is/are present and at least one is crying. The driving style may be to drive soft s-curves even when the road goes straight (if there is no danger in maneuvering the vehicle in that manner, such as when there are no other vehicles present in the lanes adjacent to the lane in which the subject vehicle is traveling).
The “baby on board” mode is one of the scenarios in which the driving behavior of the driver may be conservative and not aggressive. Aggressive driving may be characterized by frequent changing of lanes, frequent overtaking, hard braking and less time-gap or low distance to other traffic participants. Because the vehicle is learning to imitate the driver's driving style, there may be different styles on the scale of different input parameters (occupancy and condition parameters) but without judging or labeling whether the style is more or less comfortable, fuel saving, vehicle wearing, lullabying, enervating for the elderly or slower responding, less aggressive, more conservative driver or occupant.
The system may determine the occupancy of the vehicle responsive to a user input or to a vehicle interior monitoring system, which may include one or more cameras with a field of view interior the vehicle and encompassing the seats of the vehicle. The system may recognize or identify particular occupants or types of occupants or categories of occupants in determining the driving style or mode. The system may determine, for example (and such as via processing of image data captured by one or more interior monitoring cameras of the vehicle), whether an occupant is small (such as a baby or child), whether an occupant is elderly, that the occupant is consuming food or a beverage (such as by determining that the occupant is holding a cup or other object), and/or whether the occupant has a physical characteristic that is indicative of a category of occupants who may prefer or require a less aggressive driving style, whereby the system may adjust the control of the vehicle to a less aggressive driving style.
The system may utilize aspects of head and face direction and position tracking systems and/or eye tracking systems and/or gesture recognition systems. Such head and face direction and/or position tracking systems and/or eye tracking systems and/or gesture recognition systems may utilize aspects of the systems described in U.S. Publication Nos. US-2016-0137126; US-2015-0352953; US-2015-0296135; US-2015-0294169; US-2015-0232030; US-2015-0022664; US-2015-0015710; US-2015-0009010 and/or US-2014-0336878, which are hereby incorporated herein by reference in their entireties.
When the occupant(s) in the vehicle is/are identified or classified or characterized, the system may then control the vehicle in an autonomous or semi-autonomous mode and in a manner set by the determination/classification/identification of the occupant(s) in the vehicle. When operating in the autonomous or semi-autonomous mode, the system controls vehicle movement and maneuvering responsive to multiple exterior viewing/sensing sensors and/or cameras of the vehicle.
For example, the vision system and/or processing and/or camera and/or circuitry may utilize aspects described in U.S. Pat. Nos. 9,233,641; 9,146,898; 9,174,574; 9,090,234; 9,077,098; 8,818,042; 8,886,401; 9,077,962; 9,068,390; 9,140,789; 9,092,986; 9,205,776; 8,917,169; 8,694,224; 7,005,974; 5,760,962; 5,877,897; 5,796,094; 5,949,331; 6,222,447; 6,302,545; 6,396,397; 6,498,620; 6,523,964; 6,611,202; 6,201,642; 6,690,268; 6,717,610; 6,757,109; 6,802,617; 6,806,452; 6,822,563; 6,891,563; 6,946,978; 7,859,565; 5,550,677; 5,670,935; 6,636,258; 7,145,519; 7,161,616; 7,230,640; 7,248,283; 7,295,229; 7,301,466; 7,592,928; 7,881,496; 7,720,580; 7,038,577; 6,882,287; 5,929,786 and/or 5,786,772, which are all hereby incorporated herein by reference in their entireties.
The system may also communicate with other systems, such as via a vehicle-to-vehicle communication system or a vehicle-to-infrastructure communication system or the like. Such car2car or vehicle to vehicle (V2V) and vehicle-to-infrastructure (car2X or V2X or V2I or 4G or 5G) technology provides for communication between vehicles and/or infrastructure based on information provided by one or more vehicles and/or information provided by a remote server or the like. Such vehicle communication systems may utilize aspects of the systems described in U.S. Pat. Nos. 6,690,268; 6,693,517 and/or 7,580,795, and/or U.S. Publication Nos. US-2014-0375476; US-2014-0218529; US-2013-0222592; US-2012-0218412; US-2012-0062743; US-2015-0251599; US-2015-0158499; US-2015-0124096: US-2015-0352953; US-2016-0036917 and/or US-2016-0210853, which are hereby incorporated herein by reference in their entireties.
The system may utilize sensors, such as radar or lidar sensors or the like. The sensing system may utilize aspects of the systems described in U.S. Pat. Nos. 9,753,121; 9,689,967; 9,599,702; 9,575,160; 9,146,898; 9,036,026; 8,027,029; 8,013,780; 6,825,455; 7,053,357; 7,408,627; 7,405,812; 7,379,163; 7,379,100; 7,375,803; 7,352,454; 7,340,077; 7,321,111; 7,310,431; 7,283,213; 7,212,663; 7,203,356; 7,176,438; 7,157,685; 6,919,549; 6,906,793; 6,876,775; 6,710,770; 6,690,354; 6,678,039; 6,674,895 and/or 6,587,186, which are hereby incorporated herein by reference in their entireties.
Changes and modifications in the specifically described embodiments can be carried out without departing from the principles of the invention, which is intended to be limited only by the scope of the appended claims, as interpreted according to the principles of patent law including the doctrine of equivalents.
The present application is a continuation of U.S. patent application Ser. No. 15/787,836, filed Oct. 19, 2017, now U.S. Pat. No. 11,119,480, which claims the filing benefits of U.S. provisional application Ser. No. 62/410,461, filed Oct. 20, 2016, which is hereby incorporated herein by reference in its entirety.
Number | Date | Country | |
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62410461 | Oct 2016 | US |
Number | Date | Country | |
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Parent | 15787836 | Oct 2017 | US |
Child | 17447451 | US |