System and Method for Controlling an Electronic Parking Brake System
First Claim
1. A brake system controller comprising:
- a first port;
a second port; and
a processing unit comprising control logic, the processing unit in electrical communication with the first port and the second port;
wherein the processing unit is capable of;
receiving a parking brake control message at the first port, andtransmitting a check message at the second port in response to the parking brake control message being received at the first port.
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Accused Products
Abstract
Various embodiments of a system and method of controlling an electronic parking brake system for an air braked vehicle are disclosed. A dash switch module receives a signal indicative of a parking brake request. The dash switch module transmits a parking brake control message using a first communication path in response to the parking brake request. A braking system controller transmits a check message in response to the parking brake control message using a second communication path. The dash switch module transmits a confirmation message using the second communication path in response to the confirmation message. The brake system controller transmits a control signal to the park control module to park or un-park the vehicle in response to the confirmation message.
20 Citations
27 Claims
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1. A brake system controller comprising:
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a first port; a second port; and a processing unit comprising control logic, the processing unit in electrical communication with the first port and the second port; wherein the processing unit is capable of; receiving a parking brake control message at the first port, and transmitting a check message at the second port in response to the parking brake control message being received at the first port. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A dash switch controller comprising:
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a first port; a second port; and a processing unit comprising control logic, the processing unit in electrical communication with the first port and the second port; wherein the processing unit is capable of; receiving a signal indicative of a parking brake request; transmitting a parking brake control message at the first port in response to the signal indicative of a parking brake request being received; receiving a check message at the second port after the parking brake control message being transmitted at the first port; and transmitting a confirmation message at the second port in response to the check message. - View Dependent Claims (9, 10, 11, 12)
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13. An electronic parking brake system comprising:
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a dash switch controller, the dash switch controller comprising a processing unit that is capable of;
receiving a signal indicative of a parking brake request;
transmitting a parking brake control message in response to the signal indicative of a parking brake request being received;
receiving a check message after the parking brake control message is transmitted; and
transmitting a confirmation message in response to the check message; anda brake system controller communicatively coupled to the dash switch controller comprising a processing unit that is capable of;
receiving a parking brake control message; and
transmitting a check message in response to the parking brake control message being received. - View Dependent Claims (14, 15, 16)
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17. A system to control an electronic parking brake system comprising:
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a dash switch controller capable of;
receiving a parking brake request;
transmitting a parking brake control message on one of a first communication path and a second communication path in response to the parking brake request;
receiving a check message in response to the parking brake control message; and
transmitting a confirmation message on one of the first communication path and the second communication path in response to the check message;a brake system controller capable of;
receiving the parking brake control message;
transmitting the check message on one of the first communication path and the second communication path; and
receiving the confirmation message in response to the check message;means for communicating the parking brake control message, the confirmation message and the check message between the dash switch controller and the braking system controller; and means for determining the parking brake control message was received by the brake system controller prior to the brake system controller controlling a park control module.
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18. A method for controlling an electronic parking brake system comprising:
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receiving in a dash switch controller a parking brake request; transmitting a parking brake control message from the dash switch controller to a brake system controller through a first communication path in response to the parking brake request; receiving a check message from the brake system controller to the dash switch controller through a second communication path in response to the parking brake control message, wherein the first communication path is different than the second communication path; transmitting a confirmation message from the dash switch controller to the brake system controller through the second communication path in response to the check message. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25)
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26. A method for controlling an electronic parking brake system comprising:
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receiving in a dash switch controller a parking brake request; communicating from the dash switch controller to a brake system controller a parking brake control message using a first communication path in response to the parking brake request; communicating from the brake system controller to the dash switch controller a check message using a second communication path in response to the parking brake control message, wherein the first communication path is different from the second communication path; and communicating from the dash switch controller to the brake system controller a confirmation message using the second communication path, the brake system controller controlling the electronic parking brake system in response to the parking brake control message and the confirmation message.
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27. A method for communicating a parking brake control request, the method comprising:
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transmitting a parking brake control message from a dash switch controller to a brake system controller using a first communication path; determining whether the dash switch controller receives a check message in response to the parking brake control message; transmitting the parking brake control message through a second communication path if the brake system controller does not receive the parking brake control message within a predetermined period of time after transmitting the parking brake control message; transmitting a check message using the second communication path from the brake system controller in response to the brake system controller receipt of the parking brake control message; and receiving the confirmation message at the brake system controller, the brake system controller controlling the parking brakes in response to the parking brake control message.
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Specification