Drive assist system for vehicle
First Claim
1. A drive assist system for a vehicle, comprising:
- traffic conditions judging means for judging a traffic condition for said vehicle;
first safe inter-vehicle distance establishing means for establishing a first safe inter-vehicle distance according to said judged traffic condition;
first inter-vehicle distance comparing means for comparing a calculated inter-vehicle distance between the vehicle and a preceding vehicle with said first safe inter-vehicle distance and for outputting a first signal when said calculated inter-vehicle distance becomes smaller than said first safe inter-vehicle distance;
second safe inter-vehicle distance establishing means for establishing a second safe inter-vehicle distance smaller than said first safe inter-vehicle distance; and
second inter-vehicle distance comparing means for comparing said calculated inter-vehicle distance with said second safe inter-vehicle distance and for outputting a second signal when said calculated inter-vehicle distance becomes smaller than said second safe inter-vehicle distance.
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Accused Products
Abstract
In a vehicular drive assist system for warning a driver to pay attention to a preceding vehicle running ahead when a vehicle comes close to the preceding vehicle and the distance between these two vehicles becomes smaller than a safe inter-vehicle distance, this safe inter-vehicle distance is automatically established in two stages according to traffic conditions. One stage is where road is empty and another is where road is crowded. Since the safe inter-vehicle distance at the crowded condition is established to be a smaller value than the one at the empty condition, when road is crowded, due to the shortened safe inter-vehicle distance, warning is prevented from being issued so frequently.
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Citations
11 Claims
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1. A drive assist system for a vehicle, comprising:
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traffic conditions judging means for judging a traffic condition for said vehicle; first safe inter-vehicle distance establishing means for establishing a first safe inter-vehicle distance according to said judged traffic condition; first inter-vehicle distance comparing means for comparing a calculated inter-vehicle distance between the vehicle and a preceding vehicle with said first safe inter-vehicle distance and for outputting a first signal when said calculated inter-vehicle distance becomes smaller than said first safe inter-vehicle distance; second safe inter-vehicle distance establishing means for establishing a second safe inter-vehicle distance smaller than said first safe inter-vehicle distance; and second inter-vehicle distance comparing means for comparing said calculated inter-vehicle distance with said second safe inter-vehicle distance and for outputting a second signal when said calculated inter-vehicle distance becomes smaller than said second safe inter-vehicle distance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification
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- Resources
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Current AssigneeSubaru Corp.
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Original AssigneeFuji Jukogyo KK (Subaru Corp.)
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InventorsIkeda, Atsushi, Kinoshita, Masahiro
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Primary Examiner(s)Hofsass, Jeffery A.
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Assistant Examiner(s)Pope, Daryl C.
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Application NumberUS08/878,550Time in Patent Office544 DaysField of Search340/903, 340/904, 340/934, 340/435, 340/436, 701/45, 701/48, 701/70, 701/71, 701/78, 701/79, 701/96, 701/301US Class Current340/435CPC Class CodesB60T 7/22 initiated by contact of veh...G01S 11/12 using electromagnetic waves...
