Traveling-path deduction apparatus and method for vehicles
First Claim
1. A traveling-path deduction apparatus which detects objects existing ahead of a vehicle and deduces a traveling path of the vehicle, comprising:
- (a) object detection means for detecting the positions of objects existing ahead of the vehicle;
(b) traveling-path temporary-setting means for setting at least one temporary traveling path as a line having a predetermined curvature, extending from the vehicle as an original point, based on results of detection by said object detection means;
(c) distance calculation means for calculating distances between the temporary traveling path set by said traveling-path temporary-setting means and the objects detected by said object detection means; and
(d) traveling-path deduction means for deducing the traveling path of the vehicle, based on a time change amount in the distances calculated by said distance calculation means.
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Abstract
A traveling-path temporary-setting unit 21 sets a plurality of temporary traveling paths with different curvatures, and a calculation unit 22 calculates distances between the temporary traveling paths and preceding vehicles detected by a radar unit 1. In case of a properly-set temporary traveling path, the path and running loci of the preceding vehicles are on a concentric circle. In this case, the preceding vehicles are running along this temporary traveling path, and a time change amount of calculated distances is approximately "0". A traveling-path determination unit 23 determines, one temporary traveling path having the minimum time change amount in the distances, as a traveling path of the vehicle.
22 Citations
34 Claims
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1. A traveling-path deduction apparatus which detects objects existing ahead of a vehicle and deduces a traveling path of the vehicle, comprising:
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(a) object detection means for detecting the positions of objects existing ahead of the vehicle; (b) traveling-path temporary-setting means for setting at least one temporary traveling path as a line having a predetermined curvature, extending from the vehicle as an original point, based on results of detection by said object detection means; (c) distance calculation means for calculating distances between the temporary traveling path set by said traveling-path temporary-setting means and the objects detected by said object detection means; and (d) traveling-path deduction means for deducing the traveling path of the vehicle, based on a time change amount in the distances calculated by said distance calculation means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A traveling-path deduction method for detecting objects existing ahead of the vehicle and deducing a traveling path of the vehicle, comprising:
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(a) an object detection step of detecting the positions of objects existing ahead of the vehicle; (b) a traveling-path temporary-setting step of setting at least one temporary traveling path as a line having a predetermined curvature, extending from the vehicle as an original point, based on results of detection at said object detection step; (c) a distance calculation step of calculating distances between the temporary traveling path set at said traveling path temporary-setting step and the objects detected at said object detection step; and (d) a traveling-path deduction step of deducing the traveling path of the vehicle, based on a time change amount in the distances calculated at said distance calculation step. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A traveling-path deduction apparatus which detects objects existing ahead of a vehicle and deduces a traveling path of the vehicle, comprising:
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(a) object detection means for detecting the positions of objects existing ahead of the vehicle; (b) traveling-path temporary-setting means for setting a plurality of temporary traveling paths as respective lines having predetermined different curvatures, extending from the vehicle as an original point, based on results of detection by said object detection means; (c) distance calculation means for calculating distances between the respective plurality of temporary traveling paths set by said traveling-path temporary-setting means and the objects detected by said object detection means; and (d) traveling-path deduction means for deducing the traveling path of the vehicle, based on a time change amount in the distances calculated by said distance calculation means, and wherein said traveling-path deduction means deduces a temporary traveling path having the minimum time change amount in the distances calculated by said distance calculation means, as the traveling path of the vehicle. - View Dependent Claims (21, 22, 23, 24, 25, 26)
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27. A traveling-path deduction method for detecting objects existing ahead of the vehicle and deducing a traveling path of the vehicle, comprising:
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(a) an object detection step of detecting the positions of objects existing ahead of the vehicle; (b) a traveling-path temporary-setting step of setting a plurality of temporary traveling paths as lines having respective predetermined curvatures, extending from the vehicle as an original point, based on results of detection at said object detection step; (c) a distance calculation step of calculating distances between the respective temporary traveling paths set by said traveling path temporary-setting step and the objects detected at said object detection step; and (d) a traveling-path deduction step of deducing the traveling path of the vehicle, based on a time change amount in the distances calculated at said distance calculation step, wherein a temporary traveling path, having the minimum time change amount in the distances calculated at said distance calculation step, is deduced as the traveling path of the vehicle. - View Dependent Claims (29, 30, 31, 32, 33, 34)
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28. A traveling-path deduction method for detecting objects existing ahead of the vehicle and deducing a traveling path of the vehicle, comprising:
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(a) an object detection step of detecting the positions of objects existing ahead of the vehicle; (b) a traveling-path temporary-setting step of setting a plurality of temporary traveling paths as lines having respective predetermined curvatures, extending from the vehicle as an original point, based on results of detection at said object detection step; (c) a distance calculation step of calculating distances between the respective temporary traveling paths set by said traveling-path temporary-setting step and the objects detected at said object detection step; and (d) a traveling-path deduction step of deducing the traveling path of the vehicle, based on a time change amount in the distances calculated at said distance calculation step, wherein at said traveling-path temporary-setting step, the plurality of temporary traveling paths are simultaneously set with different curvatures.
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Specification