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    • 9. 发明申请
    • Multiple-Stage Collision Avoidance Braking System and Method
    • US20180236984A1
    • 2018-08-23
    • US15439261
    • 2017-02-22
    • Arnaldo C. Gomes
    • Arnaldo C. Gomes
    • B60T7/22B60T8/26B60T13/26B60T13/68B60T13/66
    • B60T7/22B60T8/263B60T8/266B60T13/268B60T13/662B60T13/683B60T17/22B60T2201/022
    • An apparatus and method for automatic actuation and control of an air braking system on a commercial vehicle, under a warning of collision conditions, has multiple stages of operation, which supplements the normal brake pedal activation and control of the air brake operation under the driver's foot control. Automatic actuation has two stages: (1) impending collision automatic activation and control for 1.4 second closure; and (2) imminent collision automatic activation and control for 0.9 seconds closure. A determination of closure occurring in excess of 1.6 seconds, turns off the warning, and also deactivates the automatic activation and control. A modification to a standard air brake system structure enables the addition of the automatic activation and control stages. When an impending collision signal is received, an activation component operates valves to pressurize the rear brakes to 40 psi. When the air pressure at the rear brakes rises to 20 psi, other valves pressurize the front brakes. This first stage automatic operation stops or slows the vehicle with 40 psi on the rear brakes and 20 psi on the front brakes. When an imminent collision signal is received, the activation component opens valves to pressurize the rear brakes to 120 psi. Once the air pressure at the rear brakes rises to 20 psi, the front brakes are also pressurized. This second stage automatic operation stops the vehicle with 120 psi on the rear brakes and 80 psi on the front brakes, unless restricted to a lower pressure by the brake system manufacturer. The driver can deactivate the automatic braking functions by stepping on the brake pedal or by operating the vehicle turn signals.