Calculation apparatus and arithmetic method
AssigneeFaurecia Clarion Electronics Co., Ltd.
InventorsMitsunori Maru, Shinichi Amaya, Isamu Oda, Takefumi Kudo, Takaaki Shiina
Life of this patent
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Abstract
A calculation apparatus includes a control unit configured to calculate a necessary distance that is necessary for a vehicle to perform lane change from a first travel lane to a second travel lane by combining a first distance that the vehicle travels while the vehicle waits to start the lane change, a second distance that the vehicle travels while a speed of the vehicle is adjusted, and a third distance that the vehicle travels while executing the lane change.
Claims11
A navigation system for guiding a vehicle to make a lane change comprising:
- a control unit including a processor and memory, the processor configured to calculate a safe distance for the vehicle to perform lane change from a first travel lane to a second travel lane by adding
- a first distance that the vehicle travels in the first travel lane while the vehicle waits to start the lane change, wherein the first distance increases as traffic density in the second travel lane increases,
- a second distance that the vehicle travels before a speed of the vehicle is adjusted to traffic speed in the second travel lane, and
- a third distance that the vehicle travels while executing the lane change, wherein the third distance is calculated by the processor as a function of lateral-direction acceleration rate of the vehicle while executing the lane change.
A method, executed by a computer, for guiding a vehicle to make a lane change, the method comprising:
- calculating a safe distance for the vehicle to perform lane change from a first travel lane to a second travel lane, the calculation method calculating the safe distance by adding
- a first distance that the vehicle travels in the first travel lane while the vehicle waits to start the lane change, wherein the first distance increases as traffic density in the second travel lane increases,
- a second distance that the vehicle travels before a speed of the vehicle is adjusted to traffic speed in the second travel lane, and
- a third distance that the vehicle travels while executing the lane change, wherein the third distance is calculated by the processor as a function of lateral-direction acceleration rate of the vehicle while executing the lane change.
Dependencies are inferred from the claim text.