System and method for using a pneumatic line as a backup communication channel for first and second park brake controllers
AssigneeBendix Commercial Vehicle Systems LLC
InventorsThomas J. Hayes, Christopher H. Hutchins, Niket Mokashi, Vishawajeet More
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Abstract
A system and method are provided for using a pneumatic line as a backup communication channel for first and secondary park brake controllers. In one embodiment, a park brake system is provided comprising a first park brake controller and a second park brake controller. The first park brake controller is configured to selectively alter air pressure in an air line of a vehicle to pneumatically communicate a message to the second park brake controller after a loss of electronic communication with the second park brake controller. Other embodiments are provided.
Claims20
A park brake system comprising:
- a first park brake controller;
- and
- a second park brake controller;
- wherein the first park brake controller is configured to selectively alter air pressure in an air line of a vehicle to pneumatically communicate a message to the second park brake controller after a loss of electronic communication with the second park brake controller.
A method comprising:
- performing in a park brake system of a vehicle comprising first and second park brake controllers:
- with the second park brake controller, attempting to park the vehicle in response to detecting of a loss of electronic communication between the first and second park brake controllers;
- and
- with the first park brake controller:
- determining whether the second park brake controller was successful in parking the vehicle prior to a first countdown timer elapsing;
- and
- in response to determining that the second park brake controller was not successful in parking the vehicle prior to the first countdown timer elapsing, pneumatically communicating a message to the second park brake controller to indicate that a second countdown timer has started.
A park brake system comprising:
- a first park brake controller;
- a second park brake controller;
- and
- means for selectively altering air pressure in an air line of a vehicle to pneumatically communicate a message to the second park brake controller after a loss of electronic communication with the second park brake controller.
Dependencies are inferred from the claim text.