US 2025/0170952 A1 · DYNAMICALLY-CONTROLLED AUTOMATIC TURN SIGNAL CANCELLATION IN A VEHICLE

Abstract

Dynamic speed-controlled automatic turn signal cancellation in a vehicle. An automatic turn signal cancellation system is configured detect steering wheel angle changes to indicate a vehicle turn and then a steering wheel angle returning towards turn neutral position for canceling turn signal. If steering wheel angle remains in the turn neutral position for a determined stability time, the turn is deemed completed and the turn signal is automatically cancelled. The stability time is dynamically determined inversely related to maximum steering wheel angle of the turn, because a steering wheel will return to a stable position faster from a larger steering wheel motion from a sharper turn. The automatic turn signal cancellation system can also dynamically set a threshold angle used to determine initial vehicle turn based on the speed of the vehicle because the faster the vehicle speed, the less steering wheel angle change is required to perform a turn.

Claims20

Dependent claims

An automatic turn signal cancellation system comprising processing circuitry configured to, in response to activation of a turn signal in a vehicle:

detect a steering wheel angle related to turning of a steering wheel of the vehicle exceeding a first threshold angle from a turn neutral position indicating a turn;
and
in response to detecting the steering wheel exceeding the first threshold angle:
detect that the steering wheel angle has fallen below a second threshold angle less than the first threshold angle and towards the turn neutral position;
determine a maximum steering wheel angle related to turning of the steering wheel after the steering wheel angle exceeded the first threshold angle;
and
in response to detecting that the steering wheel angle has fallen below the second threshold angle:
set a stability time based on the determined maximum steering wheel angle;
determine whether the steering wheel angle remains in a turn neutral angle window for the set stability time;
and
in response to determining the steering wheel angle remains in the turn neutral angle window for the set stability time, cancel the turn signal.

8 more elements

A method of automatically canceling a turn signal in a vehicle, comprising:

detecting, by a processing circuitry, activation of a turn signal in the vehicle;
and
in response to detecting activation of the turn signal:
detecting, by the processing circuitry, a steering wheel angle related to turning of a steering wheel of the vehicle exceeding a first threshold angle from a turn neutral position indicating a turn;
and
in response to the processing circuitry detecting the steering wheel angle exceeding the first threshold angle:
detecting, by the processing circuitry, that the steering wheel angle has fallen below a second threshold angle less than the first threshold angle and towards the turn neutral position;
determining, by the processing circuitry, a maximum steering wheel angle related to turning of the steering wheel after the steering wheel angle exceeded the first threshold angle;
and
in response to the processing circuitry detecting that the steering wheel angle has fallen below the second threshold angle:
setting, by the processing circuitry, a stability time based on the determined maximum steering wheel angle;
determining, by the processing circuitry, whether the steering wheel angle remains in a turn neutral angle window for the set stability time;
and
canceling, by the processing circuitry, the turn signal in response to determining the steering wheel angle remains in the turn neutral angle window for the set stability time.

11 more elements

Dependencies are inferred from the claim text.

Dynamically-controlled automatic turn signal cancellation in a vehicle

Life of this patent

Dynamically-controlled automatic turn signal cancellation in a vehicle

Life of this patent

Abstract

Claims20