Speed limiter
AssigneeFuji Jukogyo Kabushiki Kaisha
InventorsYuji Kii, Tasuku Maruyama, Munenori Matsuura
Life of this patent
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Abstract
Provided is a speed limiter, wherein a vehicle speed is detected, and a speed limit displayed on a speed sign is detected based on an image captured by a front monitoring camera. A speed difference between the vehicle speed and the speed limit is calculated, and an accelerator sensitivity gain is set using the speed difference as a parameter. Then an accelerator opening degree is corrected with the accelerator sensitivity gain to obtain a pseudo accelerator opening degree. A target throttle opening degree is set based on the pseudo accelerator opening degree and an engine rpm.
Claims4
A speed limiter comprising:
- a capturer for capturing a front of a subject vehicle;
- a vehicle speed detector for detecting a speed of the subject vehicle;
- an accelerator opening detector for detecting an accelerator opening degree;
- an engine rpm detector for detecting an engine rpm;
- a speed limit detector for detecting a speed limit displayed on a speed sign, based on an image captured by the capturer;
- an accelerator sensitivity gain setter for setting an accelerator sensitivity gain corresponding to a speed excess if an overspeed is detected based on a speed difference between a vehicle speed detected by the vehicle speed detector and a speed limit detected by the speed limit detector;
- a pseudo accelerator opening setter for setting a pseudo accelerator opening degree by correcting an accelerator opening detected by the accelerator opening detector with an accelerator sensitivity gain set by the accelerator sensitivity gain setter;
- and
- a target throttle opening setter for setting a target throttle opening degree based on an pseudo accelerator opening degree set by the pseudo accelerator opening setter and an engine rpm detected by the engine rpm detector.
Dependencies are inferred from the claim text.