摘要:
In an obstacle detection system for a vehicle which has a radar having an electromagnetic wave transmission device and a reflected wave reception device, the electromagnetic transmission device transmits electromagnetic waves in a direction in which the vehicle is traveling, and the reflected wave reception device receives reflected waves produced when the electromagnetic waves transmitted from the electromagnetic wave transmission device are reflected by an object present in the traveling direction of the vehicle. The system detects obstacles present in the traveling direction of the vehicle based on the result of a radar search operation, and it is possible to identify only those objects detrimental to the traveling of the vehicle as obstacles. An obstacle decision device decides whether or not the object detected by the radar is an obstacle, by using the detected value determined by a vehicle speed detection device which detects the speed of the vehicle, the calculated value determined by a relative distance calculation device that calculates a relative distance to the object present in the traveling direction of the vehicle based on the result of search operation by the radar, and the calculated value determined by an overlap calculation device that calculates an overlap in the width direction of the vehicle between the vehicle and the object according to the result of the search operation by the radar.
摘要:
A system for controlling running safety of a vehicle having an alarm and an automatic braking system. A plurality of decelerations &agr;2n of an obstacle such as another vehicle present ahead on the road is predicted and corresponding manipulated variables &agr;1n (braking amount) to be supplied to the vehicle which indicate possible deceleration of the vehicle are determined. Then threshold values L&agr;2n for alarming and automatic braking are determined corresponding to the predicted deceleration and are successively compared with the distance to the obstacle. When the distance falls below any of the threshold values, alarming or automatic braking is effected to avoid contact with the obstacle, thereby making the system relatively simple and enabling operation to match the driver's expectations.
摘要:
When a radar device S1 detects an object existing ahead of a vehicle in the movement direction of the vehicle, a determining device M1 determines a possibility of contact of the vehicle with the object from the relative positional relationship between the vehicle and the object, based on the result of such detection. If it is determined there is the possibility of contact, an automatic braking device M2 operates a vacuum booster 2 to carry out an automatic braking operation to avoid the contact of the vehicle with the object. When a braking-will detecting device M3 detects a driver's braking will during the automatic braking operation by the automatic braking device M2, an emergency-degree presuming device M4 presumes a degree of emergency in the driver's braking will, and the automatic braking device M2 generates the braking force corresponding to the degree of emergency to assist in the braking operation of the driver. This enables a smooth switch-over from the avoidance of the contact by the automatic braking operation to the avoidance of the contact by the driver's braking operation, and a high braking force assisted by the automatic braking operation can be generated to effectively avoid the contact.
摘要:
A vehicle control system having a laser radar for detecting an obstacle present ahead on a course of travel of the vehicle; and control device for operating a brake or an alarm based on an output of the laser radar when a distance from the vehicle to the obstacle is less than a first predetermined value or is less than a third predetermined value. In the system, a millimeter-wave radar, which is inferior to the laser radar in position detection accuracy, but is superior in weather-proof operation, is provided. When the laser radar is inoperative, the control device operates the brake or alarm based on the output of the millimeter-wave radar when the distance is less than a second predetermined value (less than the first predetermined value) or is less than a forth predetermined value (greater than the third predetermined value), thereby expediting the alarm initiation to alert the vehicle driver at an appropriate time, while ensuring the proper brake initiation, so as not to cause the vehicle driver to experience annoyance.
摘要:
The avoidance of an obstacle by a vehicle is enhanced by effective balancing an automatic braking operation and a turnability increasing control operation assisting in a steering operation of the vehicle whereby the obstacle avoiding capability is enhanced to the maximum. If a vehicle is being automatically controlled and the steering operation is carried out by the driver and if it is determined an obstacle can be avoided by a turnability increasing control operation, and if an avoiding space exists in a direction of turning of the vehicle, the turnability increasing control operation is carried out to perform the avoidance of the obstacle by the steering operation. If no avoiding space exists in the direction of turning of the vehicle, the avoidance of the obstacle by the steering operation is not performed, and a stability increasing control operation is carried out to effectively perform the avoidance of the obstacle by the automatic braking operation.
摘要:
A brake fluid pressure retaining unit for retaining brake fluid pressure within a wheel cylinder after releasing a brake pedal is disclosed. The brake fluid pressure retaining unit includes a brake fluid pressure reduction speed control device for retaining reduction speed of the brake fluid pressure within the wheel cylinder less than that of brake pedal load applied by a driver. The brake fluid pressure reduction speed control device may be formed by a restriction in a brake fluid pressure circuit arranged between a master cylinder at which the brake fluid pressure is generated in accordance with a brake pedal load applied by the driver and the wheel.
摘要:
A ground surface as an image acquiring object is acquired by a synthetic aperture radar mounted on an artificial satellite at a usual time before occurrence of a disaster and thereby radar image data are obtained. After the occurrence of the disaster, an image of the ground surface as the image acquiring object is acquired within days shorter than the number of orbit returning days and by comparing this radar image data with the radar image data acquired at the usual time so as to try to early grasp a damaged situation. At a recovering and rebuilding time after the occurrence of the disaster, images of the image acquiring object are periodically acquired so as to prepare a recovering and rebuilding plan and prevent secondary disasters.
摘要:
A travel safety apparatus for a vehicle, the apparatus includes: a first detector detecting an object in a first detection area; a second detector detecting the object in a second detection area; a braking device decelerating the vehicle; an alarm device which outputs an alarm to an occupant of the vehicle; a third detector measuring the traveling state of the vehicle; a collision determination device which determines a possibility of a collision between the vehicle and the object based on the traveling state; and a controller which operates at least one of the braking device and the alarm device when there is the possibility of collision, wherein the controller changes at least one of operation timing of the alarm device, operation timing of the braking device, and deceleration degree made by the braking device in accordance with whether or not the first detector and the second detector detect the object.
摘要:
A vehicle surroundings monitoring apparatus, a vehicle surroundings monitoring method, and a vehicle surroundings monitoring program which can rapidly determine an object such as a pedestrian to be avoided which must be avoided from coming into contact with the vehicle from an image of the surroundings of the vehicle and can provide information to a driver or control the vehicle behaviors. The vehicle surroundings monitoring apparatus includes an object extraction process unit (11) which extracts objects existing around a vehicle (10) from images taken by infrared cameras (2R, 2L), a pedestrian extraction process unit (12) which extracts a pedestrian from the extracted objects, a posture determination process unit (13) which determines the posture of the extracted pedestrian, an object-to-be-avoided determination process unit (14) which determines whether the extracted object is an object to be avoided which must be avoided from coming into contact with the vehicle (10) by executing a determination algorithm including at least a first determination process on the posture of the pedestrian determined by the posture determination process unit (13), and a vehicle equipment control process unit (15) which controls equipment of the vehicle (10) at least according to the determination result of the object-to-be-avoided determination process unit (14).
摘要:
A support apparatus for sense of vision includes: a filter device that extracts low frequency components, and respective high frequency components in at least a horizontal direction and a vertical direction from original images obtained by image capture by a plurality of image pickup devices, a frequency component combining device that combines the low frequency components of each of the original images extracted by the filter device to generate a combined low frequency component, and combines the high frequency components of each of the original images extracted by the filter device in at least the horizontal direction and the vertical direction to generate a combined horizontal high frequency component and a combined vertical high frequency component; and a composite image formation device that combines the low combined frequency component, the combined horizontal high frequency component, and the combined vertical high frequency component, generated by the frequency component combining device, to generate a composite image.