Driving support system, driving support method and computer program
First Claim
1. A driving support system characterized by comprising:
- a vehicle speed pulse acquisition unit that acquires a vehicle speed pulse that is output at predetermined intervals as a vehicle runs;
a vehicle position detecting unit that detects a position of the vehicle on the basis of the vehicle speed pulse acquired by the vehicle speed pulse acquisition unit;
a vehicle direction detecting unit that detects a direction of the vehicle;
a running direction acquisition unit that acquires a normal running direction, which is a running direction specified for a road on which the vehicle runs, on the basis of the position of the vehicle detected by the vehicle position detecting unit; and
a wrong-way driving detecting unit that detects whether the vehicle is placed in a wrong-way driving situation where the vehicle runs a wrong way on the road, on the basis of the direction of the vehicle detected by the vehicle direction detecting unit and the normal running direction, in a state where the vehicle speed pulse is acquired by the vehicle speed pulse acquisition unit at the predetermined intervals, whereinthe wrong-way driving detecting unit compares a wrong-way driving detecting direction with the normal running direction to determine whether a difference between the wrong-way driving detecting direction and the normal running direction is larger than or equal to a predetermined angle and, when the wrong-way driving detecting, unit determines that the difference between the wrong-way driving detecting direction and the normal running direction is larger than or equal to the predetermined angle. the wrong-way driving detecting unit detects that the vehicle is placed in the wrong-way driving situation;
when the vehicle speed pulse is acquired by the vehicle speed pulse acquisition unit at the predetermined intervals the wrong-way driving detecting unit updates the wrong-way driving detecting direction with the direction of the vehicle detected by the vehicle direction detecting unit; and
when the vehicle speed pulse is not acquired by the vehicle speed pulse acquisition unit at the predetermined intervals, the wrong-way driving detecting unit does not update the wrong-way driving detecting direction.
1 Assignment
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Accused Products
Abstract
Various sensors, such as a GPS and a vehicle speed sensor, are used to detect a current position and direction of a vehicle. A normal running direction, which is a running direction specified for a road on which the vehicle runs, is acquired. In a state where a vehicle speed pulse is acquired at the predetermined intervals, it is detected whether the vehicle is placed in a wrong-way driving situation on the basis of the detected current direction of the vehicle and the normal running direction; whereas, in a state where a vehicle speed pulse is not acquired, it is not detected whether the vehicle is placed in the wrong-way driving situation on the basis of the detected current direction of the vehicle.
16 Citations
7 Claims
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1. A driving support system characterized by comprising:
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a vehicle speed pulse acquisition unit that acquires a vehicle speed pulse that is output at predetermined intervals as a vehicle runs; a vehicle position detecting unit that detects a position of the vehicle on the basis of the vehicle speed pulse acquired by the vehicle speed pulse acquisition unit; a vehicle direction detecting unit that detects a direction of the vehicle; a running direction acquisition unit that acquires a normal running direction, which is a running direction specified for a road on which the vehicle runs, on the basis of the position of the vehicle detected by the vehicle position detecting unit; and a wrong-way driving detecting unit that detects whether the vehicle is placed in a wrong-way driving situation where the vehicle runs a wrong way on the road, on the basis of the direction of the vehicle detected by the vehicle direction detecting unit and the normal running direction, in a state where the vehicle speed pulse is acquired by the vehicle speed pulse acquisition unit at the predetermined intervals, wherein the wrong-way driving detecting unit compares a wrong-way driving detecting direction with the normal running direction to determine whether a difference between the wrong-way driving detecting direction and the normal running direction is larger than or equal to a predetermined angle and, when the wrong-way driving detecting, unit determines that the difference between the wrong-way driving detecting direction and the normal running direction is larger than or equal to the predetermined angle. the wrong-way driving detecting unit detects that the vehicle is placed in the wrong-way driving situation; when the vehicle speed pulse is acquired by the vehicle speed pulse acquisition unit at the predetermined intervals the wrong-way driving detecting unit updates the wrong-way driving detecting direction with the direction of the vehicle detected by the vehicle direction detecting unit; and when the vehicle speed pulse is not acquired by the vehicle speed pulse acquisition unit at the predetermined intervals, the wrong-way driving detecting unit does not update the wrong-way driving detecting direction. - View Dependent Claims (2, 3, 4, 5)
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6. A driving support method characterized by comprising:
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acquiring a vehicle speed pulse that is output at predetermined intervals as a vehicle runs; detecting a position of the vehicle on the basis of the acquired vehicle speed pulse; detecting a direction of the vehicle; acquiring a normal running direction, which is a running direction specified for a road on which the vehicle runs, on the basis of the detected position of the vehicle; and detecting whether the vehicle is placed in a wrong-way driving situation where the vehicle runs a wrong way on the road, on the basis of the detected direction of the vehicle and the normal running direction, in a state where the vehicle speed pulse is acquired at the predetermined intervals, wherein the detecting whether the vehicle is placed in a wrong-way driving situation includes comparing a wrong-way driving detecting direction with the normal running direction to determine whether a difference between the wrong-way driving detecting direction and the normal running direction is larger than or equal to a predetermined angle, and. when it is determined that the difference between the wrong-way driving detecting direction and the normal running direction is larger than or equal to the predetermined angle, it is determined that the vehicle is placed in the wrong-way driving situation; when the vehicle speed pulse is acquired at the predetermined intervals, a wrong-way driving detecting unit updates the wrong-way driving detecting direction with the direction of the vehicle detected by a vehicle direction detecting unit; and when the vehicle speed pulse is not acquired at the predetermined intervals, no updating of the wrong-way driving detecting direction is performed.
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7. A computer program that is installed on a computer and that causes a processor to perform a driving support function, the driving support function characterized by comprising:
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acquiring a vehicle speed pulse that is output at predetermined intervals as a vehicle runs; detecting a position of the vehicle on the basis of the acquired vehicle speed pulse; detecting a direction of the vehicle; acquiring a normal running direction, which is a running direction specified for a road on which the vehicle runs, on the basis of the detected position of the vehicle; and detecting whether the vehicle is placed in a wrong-way driving situation where the vehicle runs a wrong way on the road, on the basis of the detected direction of the vehicle and the normal running direction, in a state where the vehicle speed pulse is acquired at the predetermined intervals, wherein the detecting whether the vehicle is placed in a wrong-way driving situation includes comparing a wrong-way driving detecting direction with the normal running direction to determine whether a difference between the wrong-way driving detecting direction and the normal running direction is larger than or equal to a predetermined angle, and, when it is determined that the difference between the wrong-way driving detecting direction and the normal running direction is larger than or equal to the predetermined angle, it is determined that the vehicle is placed in the wrong-way driving situation; when the vehicle speed pulse is acquired at the predetermined intervals, a wrong-way driving detecting unit updates the wrong-way driving detecting direction with the direction of the vehicle detected by a vehicle direction detecting unit; and when the vehicle speed pulse is not acquired at the predetermined intervals, no updating of the wrong-way driving detecting direction is performed.
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Specification