Abstract:
A lane departure prevention apparatus is configured for reducing risk of a vehicle while preventing lane departure. The lane departure prevention apparatus basically comprises a lane departure tendency determining section, a running condition determining section and a braking force control section. The lane departure tendency determining section determines a lane departure tendency of the host vehicle from a driving lane. The running condition determining section determines a running condition of the host vehicle. The braking force control section controls a braking force to selectively produce at least one of a yaw moment on the host vehicle in accordance with the lane departure tendency of the host vehicle to avoid departure of the host vehicle from the driving lane, and a deceleration on the host vehicle in accordance with the running condition of the host vehicle.
Abstract:
A lane departure prevention apparatus is configured for improving safety of a vehicle while preventing lane departure. The lane departure prevention apparatus basically comprises a lane departure tendency determining section, a running condition determining section and a braking force control section. The lane departure tendency determining section determines a lane departure tendency of the host vehicle from a driving lane. The running condition determining section determines a running condition of the host vehicle. The braking force control section controls a braking force to selectively produce at least one of a yaw moment on the host vehicle in accordance with the lane departure tendency of the host vehicle to avoid departure of the host vehicle from the driving lane, and a deceleration on the host vehicle in accordance with the running condition of the host vehicle.
Abstract:
System for evaluating the driving environment of a motor vehicle and for influencing the speed of the motor vehicle in its own lane, with an electronic control unit, which is connected to a signal generator generating a signal which is characteristic of the desired speed of the motor vehicle, a signal generator generating a signal which is characteristic of the yaw rate of the motor vehicle about its vertical axis, a signal generator which generates, for objects located in the space lying in front of the motor vehicle in its direction of travel, a signal which is characteristic of the distance and orientation of the objects with respect to the motor vehicle and which reproduces the speed relative to the speed of the driver's motor vehicle, and/or the distance relative to the driver's motor vehicle, and/or the angular offset or the lateral deviation relative to the vehicle longitudinal axis of the driver's motor vehicle, and a signal generator generating a signal which is characteristic of the speed at least of one wheel of the motor vehicle, and which unit is connected to at least one control device influencing the road behavior of the motor vehicle in order to supply this with output signals which are derived from the road behavior of the motor vehicle located in front of the driver's motor vehicle, with characteristic values having fluid boundaries being established in the electronic control unit for at least two different road environments (town traffic, country road, motorway) in order to distinguish the type of road on which the driver's motor vehicle is traveling, wherein a quantity influencing the respective characteristic value is the “environmental speed” established from the speeds of the objects detected in the space in front of the driver's motor vehicle and preferably determined by averaging.
Abstract:
System for evaluating the traffic environment of a motor vehicle and for influencing the speed of the motor vehicle in its own traffic lane, comprising an electronic control unit, which is connected to a signal transmitter that produces a signal characteristic of the desired speed of the motor vehicle, a signal transmitter that produces a signal characteristic of the yaw of the motor vehicle about its vertical axis, a signal transmitter that produces a signal, which is characteristic of the articles situated, in the direction of travel of the motor vehicle, in front of the motor vehicle in terms of their spacing and orientation relative to the motor vehicle and which is the speed relative to the speed of the system motor vehicle and/or the spacing relative to the system motor vehicle and/or the angular offset or the cross track distance relative to the vehicle longitudinal axis of the system motor vehicle, and a signal transmitter that produces a signal characteristic of the speed of at least one wheel of the motor vehicle, and which is connected to at least one control device, which influences the performance of the motor vehicle, for supplying said device with output signals derived from the performance of the motor vehicle situated in front of the system motor vehicle, in which in the electronic control unit the behavior of the other articles moving in the space in front of the system motor vehicle is evaluated in order to infer therefrom how many traffic lanes the road has and along which of said traffic lanes the system motor vehicle is moving.
Abstract:
System for the evaluation of the driving environment of a vehicle and for influencing the speed of the vehicle in its own lane, with an electronic control unit that is connected to a signal generator generating a signal characteristic of the desired speed of the vehicle, to a signal generator generating a signal characteristic of the turning rate of the vehicle about its vertical axis, to a signal generator that generates for objects located in the space in front of the vehicle and in the direction of travel of the vehicle a characteristic signal with respect to their distance and orientation relative to the vehicle, said signal being the speed relative to the speed of the driver's vehicle and/or the distance relative to the driver's vehicle and/or the angular displacement or the lateral deviation relative to the longitudinal axis of the driver's vehicle, and to a signal generator that generates a signal characteristic of the speed of at least one wheel of the vehicle, and that is connected to at least one control device having an influence on the driving behaviour of the vehicle, in order to feed to said control device output signals that are derived from the driving behaviour of the vehicle located in front of the driver's vehicle, in which in order to define the mid line of the driver's lane in the space detected in front of the driver's vehicle the radius of curvature R of the path curve of the centre of gravity of the driver's vehicle is modified in the electronic control unit on the basis of the change of angular bearing of the objects driving in front, and/or on the absolute position of the objects driving in front relative to an instantaneously predicted lane.
Abstract:
A video amplifier for a radar receiver includes a temperature compensating attenuator. The attenuator includes a temperature sensitive device, such as a thermistor, arranged in a voltage divider network and is coupled in cascade between two filter stages. Each of the filter stages has a bandpass characteristic in order to filter low-frequency leakage signals and provide sensitivity control based on frequency and thus range, while also filtering high frequency signals to reduce aliasing.
Abstract:
Method and arrangement for controlling a subsystem of a vehicle dependent upon a sensed level of driver inattentiveness to vehicle driving tasks. A variable characteristic is measured, on a substantially real-time basis, which correlates to the driver's inattentiveness. The level of inattentiveness is assessed based at least in part on the measurement. The performance of a subsystem of the vehicle, such as cruise control or lane keeping support, is tailored, based thereupon, to assure that behavior of the vehicle appropriately matches the driver's present level of inattentiveness. The subsystem's operation is controlled in an effort to avoid or prevent the establishment of driving conditions that become inherently more dangerous as the driver's level of inattentiveness increases.
Abstract:
A method for assisting, in a passing maneuver, for motor vehicles having a distance and speed control device, in which vehicles in the passing lane are taken into account and, if the traffic situation detected by sensors or an intervention by the driver suggests a desire to pass, control is temporarily carried out to an increased passing speed. The distances to the vehicles located in the passing lane are measured and the passing speed is calculated as a function of the distances of the vehicle to be passed and at least the vehicle directly preceding in the passing lane.
Abstract:
A radar detection process includes computing a derivative of an FFT output signal to detect an object within a specified detection zone. In one embodiment, a zero crossing in the second derivative of the FFT output signal indicates the presence of an object. The range of the object is determined as a function of the frequency at which the zero crossing occurs. Also described is a detection table containing indicators of the presence or absence of an object within a respective radar beam and processing cycle. At least two such indicators are combined in order to detect the presence of an object within the detection zone and with changing range gates in each of the antenna beams the coverage of the detection zone can be varied.
Abstract:
In an automotive lane deviation avoidance system that prevents a host vehicle from deviating from its driving lane by correcting the host vehicle's course in a direction that avoids the host vehicle's lane deviation in the presence of a possibility of the host vehicle's lane deviation, the system calculates a desired yawing moment needed to avoid the host vehicle's lane deviation from the driving lane. The system compensates for the desired yawing moment by a correction factor or a gain, which is determined based on a throttle opening of the host vehicle.