Object recognition apparatus for vehicle, and inter-vehicle distance control unit
First Claim
1. An object recognition apparatus for a vehicle, comprising:
- a radar unit capable of emitting a transmission wave throughout a predetermined angular range in vertical and horizontal directions of said vehicle to receive a reflected wave from a reflecting object;
recognition means for recognizing said reflecting object on the basis of a result of the transmission and reception of said waves in said radar unit;
setting means for, on the basis of a result of transmission/reception of a wave relative to a predetermined target in said radar unit, setting an angular range of emission of a transmission wave in at least one of vertical and horizontal directions of said vehicle to an angular range smaller than said predetermined angular range so that, for recognition of said reflecting object, said radar unit emits said transmission wave in the smaller angular range set by said setting means.
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Accused Products
Abstract
In an object recognition apparatus using a radar unit for a vehicle, in mounting the radar unit on the vehicle, a transmission wave is outputted throughout an appropriate angular range in a forward direction of the vehicle in a state where a margin is given to a tolerance of the mounting angle of the radar unit on the vehicle. Laser beams are radiated at a target placed at a predetermined positional relationship relative to the radar unit mounted on the vehicle to extract a laser beam which provides the maximum light-reception intensity in each of the X-axis and Y-axis directions. Moreover, a predetermined angular range is set in each of the X-axis and Y-axis directions so that the laser beam which provides the maximum light-reception intensity is centered therein, and the predetermined angular range is used as a recognition area.
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Citations
19 Claims
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1. An object recognition apparatus for a vehicle, comprising:
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a radar unit capable of emitting a transmission wave throughout a predetermined angular range in vertical and horizontal directions of said vehicle to receive a reflected wave from a reflecting object;
recognition means for recognizing said reflecting object on the basis of a result of the transmission and reception of said waves in said radar unit;
setting means for, on the basis of a result of transmission/reception of a wave relative to a predetermined target in said radar unit, setting an angular range of emission of a transmission wave in at least one of vertical and horizontal directions of said vehicle to an angular range smaller than said predetermined angular range so that, for recognition of said reflecting object, said radar unit emits said transmission wave in the smaller angular range set by said setting means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An inter-vehicle distance control unit comprising:
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measurement means for emitting a transmission wave around one'"'"'s vehicle to detect a distance up to a reflecting object and an emission angle of said transmission wave on the basis of a result of detection of a reflected wave of said transmission wave;
calculation means for calculating a relative position and a relative speed of said reflecting object with respect to said one'"'"'s vehicle on the basis of said distance and said emission angle detected by said measurement means;
object state decision means for, on the basis of said relative speed calculated by said calculation means, making a decision as to whether said reflecting object is in a moving state or in a stopping state;
one'"'"'s-lane probability calculating means for changing a probability of the existence of said reflecting object on the same lane as that of said one'"'"'s vehicle, to be allocated to said reflecting object, on the basis of said relative position calculated by said calculation means in accordance with the moving/stopping state of said reflecting object determined by said object state decision means; and
inter-vehicle distance control means for selecting a preceding vehicle for inter-vehicle distance control on the basis of the probability allocated by said one'"'"'s-lane probability calculating means to control an inter-vehicle distance relative to the selected preceding vehicle. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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Specification