Method for detecting relative travel direction of a vehicle
First Claim
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1. A method for detecting the relative travel direction of a vehicle, said method comprising:
- a calculating step for calculating travel locus vectors of the vehicle on the basis of data related to the rotational angle of a pair of wheels of the vehicle, said calculation step being carried out at time intervals having a prescribed value for a predetermined range of values of at least one traveling condition of the vehicle selected from its traveling speed and its turning angle;
a detecting step for detecting said traveling condition of the vehicle; and
,a setting step for changing said prescribed value of the time intervals in response to a value of said traveling condition of the vehicle outside of said predetermined range of values.
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Abstract
Travel locus vectors of a vehicle are calculated at prescribed time intervals on the basis of data related to the rotational angle of a pair of wheels of the vehicle. The relative travel direction of the vehicle is detected on the basis of the travel locus vectors. The prescribed time intervals are changed in response to at least one traveling condition of the vehicle selected from its traveling speed and its turning angle.
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Citations
8 Claims
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1. A method for detecting the relative travel direction of a vehicle, said method comprising:
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a calculating step for calculating travel locus vectors of the vehicle on the basis of data related to the rotational angle of a pair of wheels of the vehicle, said calculation step being carried out at time intervals having a prescribed value for a predetermined range of values of at least one traveling condition of the vehicle selected from its traveling speed and its turning angle; a detecting step for detecting said traveling condition of the vehicle; and
,a setting step for changing said prescribed value of the time intervals in response to a value of said traveling condition of the vehicle outside of said predetermined range of values. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification