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US 8,558,718 B2Granted
Method of controlling a collision warning system using line of sight
AssigneeHonda Motor Co., Ltd.
InventorsYutaka Mochizuki, Radovan Miucic
Life of this patent
Estimating the term…
Abstract
A collision warning system for a motor vehicle is disclosed. The collision warning system includes a first mode and a second mode. The system operates in the first mode when there is line of sight with a target vehicle. The system operates in the second mode where there is no line of sight with the target vehicle.
Claims20
A method of operating a collision warning system in a motor vehicle, comprising the steps of:
- receiving information related to a target vehicle;
- determining if the target vehicle is in a line of sight of the motor vehicle;
- the collision warning system including multiple alert modes;
- operating the collision warning system in a normal alert mode when the target vehicle is in the line of sight of the motor vehicle;
- operating the collision warning system in an enhanced alert mode when the target vehicle is not in the line of sight of the motor vehicle;
- wherein the normal alert mode is different than the enhanced alert mode;
- wherein the step of operating the collision warning system further includes the steps of:
- determining that the collision warning system is operating in the normal alert mode;
- calculating a threat level, the threat level being associated with a threat of collision between the motor vehicle and the target vehicle and wherein the threat level is associated with a first threat level and a second threat level that is higher than the first threat level;
- issuing a warning alert when the threat level is the second threat level;
- and
- issuing no alert when the threat level is the first threat level.
9 more elements
A method of operating a collision warning system in a motor vehicle, comprising the steps of:
- receiving a signal transmitted by a target vehicle;
- determining a measured signal characteristic from the signal transmitted by the target vehicle;
- retrieving a reference signal characteristic corresponding to the measured signal characteristic;
- determining a line of sight condition for the motor vehicle with respect to the target vehicle using the measured signal characteristic and the reference signal characteristic;
- operating the collision warning system in a normal alert mode when the target vehicle is in the line of sight of the motor vehicle;
- operating the collision warning system in an enhanced alert mode when the target vehicle is not in the line of sight of the motor vehicle;
- wherein the normal alert mode is different than the enhanced alert mode;
- wherein the step of operating the collision warning system further includes the steps of:
- determining that the collision warning system is operating in the enhanced alert mode;
- calculating a threat level, the threat level being associated with a threat of collision between the motor vehicle and the target vehicle and wherein the threat level is associated with a first threat level and a second threat level that is higher than the first threat level;
- issuing a warning alert when the threat level is the second threat level;
- and
- issuing an informing alert when the threat level is the first threat level.
10 more elements
A method of operating a collision warning system in a motor vehicle, comprising the steps of:
- receiving information related to a target vehicle;
- receiving information related to an intermediate vehicle;
- determining if the intermediate vehicle obstructs the line of sight between the motor vehicle and the target vehicle;
- operating the collision warning system in a normal alert mode when the target vehicle is in the line of sight of the motor vehicle;
- operating the collision warning system in an enhanced alert mode when the target vehicle is not in the line of sight of the motor vehicle;
- wherein the step of determining if the intermediate vehicle obstructs the line of sight further includes the steps of:
- receiving information related to a location of the intermediate vehicle;
- calculating a headway distance between the motor vehicle and the intermediate vehicle;
- retrieving a predetermined headway distance;
- determining that the intermediate vehicle does not obstruct the line of sight between the motor vehicle and the target vehicle when the headway distance is greater than the predetermined headway distance;
- and
- determining that the intermediate vehicle does obstruct the line of sight between the motor vehicle and the target vehicle when the headway distance is less than the predetermined headway distance.
9 more elements
Dependencies are inferred from the claim text.