Vehicle collision warning apparatus and method
First Claim
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1. A vehicle collision warning apparatus comprising:
- a sensing module, sensing a first signal, the first signal comprising a first position;
a communication module, receiving a second signal, the second signal comprising a second position;
a computing unit, coupled to the sensing module and the communication module, receiving the first signal and the second signal, converting the first signal and the second signal respectively to a first velocity and a second velocity to obtain a relative velocity and a relative position, performing a vector computation to generate a normal distance, a time to closest point of approach (TCPA), and a first result, and determining, based on the first result, whether to perform a warning computation to generate a second result; and
a warning component, coupled to the computing unit to send a warning based on the second result;
wherein the normal distance is the perpendicular distance from the first position to the line indicating the direction of the relative velocity, and the TCPA is the time of arrival at the relative position from the second position based on the relative velocity; and
wherein the warning computation comprises determining, based on the first result, whether the normal distance is not greater than a warning distance, and generating the second result when the normal distance is not greater than the warning distance, and the warning distance is determined by a length, a width, and a steering angle of at least one vehicle.
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Abstract
Disclosed herein are an apparatus and a method for warning of vehicle collision. The positioning and state-reporting signal of a present vehicle is sensed and that of a target vehicle received. The signals are respectively converted to velocities. The relative velocity of the vehicles and the relative position of the vehicles after a time interval are obtained. The driver of the present vehicle is warned when the normal distance from the present vehicle to the line indicating the direction of the relative velocity is determined to be at a minimum and not greater than a warning distance.
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Citations
17 Claims
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1. A vehicle collision warning apparatus comprising:
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a sensing module, sensing a first signal, the first signal comprising a first position; a communication module, receiving a second signal, the second signal comprising a second position; a computing unit, coupled to the sensing module and the communication module, receiving the first signal and the second signal, converting the first signal and the second signal respectively to a first velocity and a second velocity to obtain a relative velocity and a relative position, performing a vector computation to generate a normal distance, a time to closest point of approach (TCPA), and a first result, and determining, based on the first result, whether to perform a warning computation to generate a second result; and a warning component, coupled to the computing unit to send a warning based on the second result; wherein the normal distance is the perpendicular distance from the first position to the line indicating the direction of the relative velocity, and the TCPA is the time of arrival at the relative position from the second position based on the relative velocity; and wherein the warning computation comprises determining, based on the first result, whether the normal distance is not greater than a warning distance, and generating the second result when the normal distance is not greater than the warning distance, and the warning distance is determined by a length, a width, and a steering angle of at least one vehicle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A vehicle collision warning method comprising:
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sensing, by a sensing module, a first signal, the first signal comprising a first position; receiving, by a communication module, a second signal, the second signal comprising a second position; converting, by a computing unit, the first position and the second position respectively to a first velocity of a first object and a second velocity of a second object, in order to obtain a relative velocity of the second object relative to the first object; obtaining, by the computing unit, a relative position based on the relative velocity; performing, by the computing unit, a vector computation to generate a normal distance, a time to closest point of approach (TCPA), and a first result; determining, by the computing unit based on the first result, whether to perform a warning computation to generate a second result; and sending, by a warning component, a warning based on the second result; wherein the normal distance is the perpendicular distance from the first position to the line indicating the direction of the relative velocity, and the TCPA is the time of arrival at the relative position from the second position based on the relative velocity; and wherein the warning computation comprises; determining, based on the first result, whether the normal distance is not greater than a warning distance, wherein the warning distance is determined by a length, a width, and a steering angle of at least one vehicle; and generating the second result when the normal distance is not greater than the warning distance. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification