VEHICLE SYSTEM FOR CONTROL OF VEHICLE SAFETY PARAMETERS, A VEHICLE AND A METHOD FOR CONTROLLING SAFETY PARAMETERS
First Claim
1. A vehicle system for control of vehicle safety parameters, the system being arranged to determine a closing velocity between a host vehicle exterior portion and an external object, or a part thereof, in a road environment where the host vehicle and the external object approach each other, the system comprising:
- image capturing means arranged at a first position of the host vehicle, the image capturing means being arranged to detect a field of view in a first direction and an extension of the external object, or a part thereof, in the field of view;
processing means arranged to estimate a time to collision between the first position and the external object, or the part thereof, from a change of ratio between the field of view and the extension of the external object, or the part thereof; and
a sensor arrangement arranged to detect a collision between the host vehicle exterior portion and the external object;
wherein the processing means further are arranged to determine a closing velocity between the host vehicle exterior portion and the external object, or the part thereof, for each of a plurality of time instances by dividing a distance between the first position and the host vehicle exterior portion by the estimated time to collision between the first position and the external object, or the part thereof, and the vehicle system is arranged to control one or more vehicle safety parameters as a function of a determined closing velocity.
2 Assignments
0 Petitions
Accused Products
Abstract
A vehicle, a method and a vehicle system for control of vehicle safety parameters is provided. The system is arranged to determine a closing velocity between a host vehicle exterior portion and an external object in a road environment where the host vehicle and the external object approach each other. The system comprises image capturing means, processing means and a sensor arrangement. The processing means are arranged to determine the closing velocity for each time instance by forming a quota of a distance between a first position and the host vehicle exterior portion and the estimated time to collision between the first position and the external object. The vehicle system is arranged to control the one or more vehicle safety parameters as a function of the determined closing velocity.
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Citations
15 Claims
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1. A vehicle system for control of vehicle safety parameters, the system being arranged to determine a closing velocity between a host vehicle exterior portion and an external object, or a part thereof, in a road environment where the host vehicle and the external object approach each other, the system comprising:
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image capturing means arranged at a first position of the host vehicle, the image capturing means being arranged to detect a field of view in a first direction and an extension of the external object, or a part thereof, in the field of view; processing means arranged to estimate a time to collision between the first position and the external object, or the part thereof, from a change of ratio between the field of view and the extension of the external object, or the part thereof; and a sensor arrangement arranged to detect a collision between the host vehicle exterior portion and the external object; wherein the processing means further are arranged to determine a closing velocity between the host vehicle exterior portion and the external object, or the part thereof, for each of a plurality of time instances by dividing a distance between the first position and the host vehicle exterior portion by the estimated time to collision between the first position and the external object, or the part thereof, and the vehicle system is arranged to control one or more vehicle safety parameters as a function of a determined closing velocity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for controlling vehicle safety parameters, the method comprising:
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detecting a field of view in a first direction and an extension of an external object, or a part thereof, in the field of view; estimating a time to collision between image capturing means in a first position of a host vehicle and the external object, or a part thereof, from a change of ratio between the field of view and the extension of the external object, or the part thereof; determining a closing velocity between the host vehicle exterior portion and the external object, or the part thereof, for each time instance by dividing a distance between the first position and the host vehicle exterior portion by the estimated time to collision between the first position and the external object, or the part thereof; and controlling one or more vehicle safety parameters as a function of the determined closing velocity. - View Dependent Claims (14)
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15. A vehicle system for control of vehicle safety parameters, the system being arranged to determine a closing velocity between a host vehicle exterior portion and an external object, or a part thereof, in a road environment where the host vehicle and the external object approach each other, the system comprising:
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a camera arranged at a first position of the host vehicle, the camera being arranged to detect a field of view in a first direction and an extension of the external object, or a part thereof, in the field of view; and one or more processors arranged to estimate a time to collision between the first position and the external object, or the part thereof, from a change of ratio between the field of view and the extension of the external object, or the part thereof; wherein the one or more processors are further arranged to determine a closing velocity between the host vehicle exterior portion and the external object, or the part thereof, for each of a plurality of time instances by dividing a distance between the first position and the host vehicle exterior portion by the estimated time to collision between the first position and the external object, or the part thereof, and the vehicle system is arranged to control one or more vehicle safety parameters as a function of a determined closing velocity.
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Specification