Automatic braking system with proximity detection to a preceding vehicle
First Claim
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1. A braking system for a vehicle comprising:
- first means for monitoring vehicle speed of a system vehicle incorporating said braking system to provide a signal indicative thereof;
second means for monitoring a distance between the system vehicle and a preceding vehicle to provide a signal indicative thereof;
third means for monitoring speed relative to the preceding vehicle to provide a signal indicative thereof;
fourth means responsive to the signals from said first, second, and third means for providing a preselected braking control parameter indicative of proximity to the preceding vehicle to determine close proximity to the preceding vehicle and for providing a control signal indicative of the close proximity;
fifth means including a brake unit responsive to said control signal from said fourth means for reducing vehicle speed of the system vehicle;
sixth means for learning a driver'"'"'s braking command characteristics based on the preselected braking control parameter determined by said fourth means when a braking operation is effected by the driver; and
seventh means for storing the driver'"'"'s braking command characteristics;
said fourth means comparing the preselected braking control parameter with the driver'"'"'s braking command characteristics stored in said seventh means to determine the close proximity to the preceding vehicle and to provide said control signal to said fifth means for reducing the speed of the system vehicle.
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Abstract
An automatic braking system for a vehicle is provided. This system includes generally a speed sensor for monitoring speed of the vehicle and a distance sensor for monitoring a distance between the vehicle and the preceding vehicle. The system determines a marginal time required for the vehicle to collide with the preceding vehicle based on speed relative to the preceding vehicle and the distance to the preceding vehicle to automatically actuate a brake when the marginal time is shorter than a preselected marginal time.
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Citations
34 Claims
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1. A braking system for a vehicle comprising:
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first means for monitoring vehicle speed of a system vehicle incorporating said braking system to provide a signal indicative thereof; second means for monitoring a distance between the system vehicle and a preceding vehicle to provide a signal indicative thereof; third means for monitoring speed relative to the preceding vehicle to provide a signal indicative thereof; fourth means responsive to the signals from said first, second, and third means for providing a preselected braking control parameter indicative of proximity to the preceding vehicle to determine close proximity to the preceding vehicle and for providing a control signal indicative of the close proximity; fifth means including a brake unit responsive to said control signal from said fourth means for reducing vehicle speed of the system vehicle; sixth means for learning a driver'"'"'s braking command characteristics based on the preselected braking control parameter determined by said fourth means when a braking operation is effected by the driver; and seventh means for storing the driver'"'"'s braking command characteristics; said fourth means comparing the preselected braking control parameter with the driver'"'"'s braking command characteristics stored in said seventh means to determine the close proximity to the preceding vehicle and to provide said control signal to said fifth means for reducing the speed of the system vehicle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A braking system for a vehicle comprising:
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intervehicle distance detecting means for detecting an intervehicle distance to a preceding vehicle and for generating an intervehicle distance signal; vehicle speed detecting means for detecting vehicle speed of a system vehicle incorporating said braking system and for generating a vehicle speed signal; means receiving said intervehicle distance signal and said vehicle speed signal for activating an automatic braking unit responsive to said intervehicle distance detecting means and said vehicle speed detecting means; driver learning means for learning a driver'"'"'s driving characteristics; means for detecting a condition wherein a driver intentionally brings the system vehicle close to the preceding vehicle and for generating a condition signal indicative thereof; and receiving means receiving said condition signal and responsive to said driver learning means for inactivating said automatic braking unit when the driver intentionally brings the system vehicle close to the preceding vehicle, said receiving means inactivating said automatic braking unit at a timing corresponding to the driver'"'"'s driving characteristic learned by said driver learning means.
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33. A system for a vehicle comprising:
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intervehicle distance detecting means for detecting an intervehicle distance to a preceding vehicle and for generating an intervehicle distance signal; vehicle speed detecting means for detecting vehicle speed of a system vehicle incorporating said braking system and for generating a vehicle speed signal; means receiving said intervehicle distance signal and said vehicle speed signal for activating an automatic braking unit responsive to said intervehicle distance detecting means and aid vehicle speed detecting means; means for detecting a condition wherein a driver intentionally brings the system vehicle close to the preceding vehicle and for generating a condition signal indicative thereof; and means receiving said condition signal for inactivating said automatic braking unit when the driver intentionally brings the system vehicle close to the preceding vehicle, wherein said means detecting the condition wherein the driver intentionally brings the system vehicle close to the preceding vehicle operates to detect said condition within a preselected period of time following activation of an alarm.
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34. A system for a vehicle comprising:
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intervehicle distance detecting means for detecting an intervehicle distance to a preceding vehicle and for generating an intervehicle distance signal; vehicle speed detecting means for detecting vehicle speed of a system vehicle incorporating said braking system and for generating a vehicle speed signal; means receiving said intervehicle distance signal and said vehicle speed signal for activating an automatic braking unit responsive to said intervehicle distance detecting means and said vehicle speed detecting means; means for detecting a condition wherein a driver intentionally brings the system vehicle close to the preceding vehicle and for generating a condition signal indicative thereof; and means receiving said condition signal for inactivating said automatic braking unit when the driver intentionally brings the system vehicle close to the preceding vehicle, wherein said means detecting the condition wherein the driver intentionally brings the system vehicle close to the preceding vehicle operates for determining whether or not an intervehicle distance to the preceding vehicle after actuating an alarm is smaller than a preselected value.
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Specification