Travel control unit for vehicle
First Claim
1. A travel control unit comprising:
- a map information outputting means for outputting map information representing an output map;
a subject-vehicle position indicating means for indicating a position of a subject vehicle on said output map;
a course setting means which outputs a set travel course to a destination;
a course travel judging means for judging whether the subject vehicle is traveling on said set course;
a deviation-possibility judging means for judging a possibility that the subject vehicle may deviate from said set course;
a deviatable course setting means for setting a deviatable course into which the subject vehicle may possibly deviate from said set course;
a travel control means for controlling the traveling state of the subject vehicle based on at least one of said set course and said deviatable course; and
an alarm means for giving an alarm to a driver of the vehicle;
whereinwhen said deviation-possibility judging means judges that there is a possibility that the subject vehicle may deviate from said set course, an alarm is given to the driver, and said travel control means switches from said control based on the set course to said control based on said deviatable course and said set course.
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Accused Products
Abstract
A course travel judging device judges based on outputs from a map information outputting device and a subject vehicle position outputting device whether a subject vehicle is traveling on a course set by a course setting device. If the subject vehicle is traveling on the set course, a vehicle speed is controlled by a travel control device, so that the subject vehicle can safely pass through a curve ahead thereof. If the subject vehicle has deviated from the set course, an alarm is given to an occupant by an alarm device, and the control of vehicle speed by the travel control device is stopped. If a departing possibility judging device judges that there is a possibility of departing of the subject vehicle from the set course, a deviatable course is set by a deviatable course determining device, and the vehicle speed is controlled by the travel control device, so that the subject vehicle can safely pass through a curve having a severest passing condition on either of the set course or the deviatable course. Therefore, even if a vehicle has deviated from a course determined through a navigation system, an appropriate control of vehicle speed can be carried out.
30 Citations
12 Claims
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1. A travel control unit comprising:
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a map information outputting means for outputting map information representing an output map; a subject-vehicle position indicating means for indicating a position of a subject vehicle on said output map; a course setting means which outputs a set travel course to a destination; a course travel judging means for judging whether the subject vehicle is traveling on said set course; a deviation-possibility judging means for judging a possibility that the subject vehicle may deviate from said set course; a deviatable course setting means for setting a deviatable course into which the subject vehicle may possibly deviate from said set course; a travel control means for controlling the traveling state of the subject vehicle based on at least one of said set course and said deviatable course; and an alarm means for giving an alarm to a driver of the vehicle;
whereinwhen said deviation-possibility judging means judges that there is a possibility that the subject vehicle may deviate from said set course, an alarm is given to the driver, and said travel control means switches from said control based on the set course to said control based on said deviatable course and said set course. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A travel control unit comprising:
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a map information outputting means for outputting map information representing an output map; a subject-vehicle position indicating means for indicating a position of a subject vehicle on said output map; a course setting means which outputs a set travel course to a destination; a course travel judging means for judging whether the subject vehicle is traveling on said set course; a deviation possibility judging means for judging a possibility that the subject vehicle may deviate from said set course; a deviatable course setting means for setting a deviatable course into which the subject vehicle may possibly deviate from said set course; a travel control means for controlling the traveling state of the subject vehicle based on at least one of said set course and said deviatable course; and an alarm means for giving an alarm to a driver of the vehicle;
whereinwhen said deviation-possibility judging means judges that there is a possibility that the subject vehicle may deviate from said set course, an alarm is given to the driver, and said travel control means switches from said control based on the set course to said control based on said deviatable course and said set course; and said deviation-possibility judging means judges said possibility that the subject vehicle may deviate from said set course based on an output from a direction-indicator operational state detecting means which detects an operational state of a turn indicator of said subject vehicle operated by the driver, and an output from a direction-indicator operation necessity judging means which judges whether it is necessary to operate the turn indicator at a position of the subject vehicle on said set course.
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10. A travel control unit comprising:
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a map information outputting means for outputting map information representing an output map; a subject-vehicle position indicating means for indicating a position of a subject vehicle on said output map; a course setting means which outputs a said travel course to a destination; a course travel judging means for judging whether the subject vehicle is traveling on said set course; a deviation possibility judging means for judging a possibility that the subject vehicle may deviate from said set course; a deviatable course setting means for setting a deviatable course into which the subject vehicle may possibly deviate from said set course; a travel control means for controlling the traveling state of the subject vehicle based on at least one of said set course and said deviatable course; an alarm means for giving an alarm to a driver of the vehicle;
whereinwhen said deviation-possibility judging means judges that there is a possibility that the subject vehicle may deviate from said set course, an alarm is given to the driver, and said travel control means switches from said control based on the set course to said control based on said deviatable course and said set course; a deviated course setting means for determining a deviated course departing from the said set course when the course travel judging means determines that the subject vehicle has deviated from the set course; and when said set course travel judging means determines that the subject vehicle has deviated from said set course, said alarm means gives an alarm to the driver and said travel control means switches from said travel control based on said set course to said control based on said deviated course.
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11. A travel control unit, comprising:
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a map information outputting means for outputting map information representing an output map; subject-vehicle position indicating means for indicating a position of a subject vehicle on said output map; a course setting means which outputs a set travel course to a destination; a course travel judging means for judging whether the subject vehicle is traveling on said set course; a deviated course determining means for determining a deviated course departing from the set course; a travel control means for controlling the traveling state of the subject vehicle based on the shape of a road on either of said set course or said deviated course in front of the subject vehicle in a traveling direction thereof; an alarm means for giving an alarm to the driver; wherein when said course travel judging means determines that the subject vehicle has deviated from said set course, said alarm means gives the alarm to the driver, and said travel control means switches from said control based on said set course to said control based on said deviated course; a deviatable course setting means for setting a deviatable course into which the subject vehicle may possibly deviate from said set course; and said travel control means controls the traveling state of the subject vehicle based on said set course, said deviatable course and said deviated course. - View Dependent Claims (12)
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Specification