Park brake logic
First Claim
1. A braking system for a vehicle comprising:
- a first brake;
a parking brake associated with a parking brake system, wherein the parking brake system is adapted to allow an operator to selectively engage the parking brake;
a warning system; and
a control system associated with the first brake, the parking brake, and the warning system, wherein the control system comprises;
a first brake state detector adapted to output a first brake signal when the first brake is engaged,a parking brake state detector adapted to output a parking brake signal when the parking brake is engaged, anda door state detector adapted to output a door position signal when a door is in an open position,wherein the control system is adapted to;
activate a portion of the parking brake system in response to receiving the first brake signal,activate the warning system in response to receiving the door position signal without receiving the parking brake signal, andactivate the warning system in response to receiving the door position signal indicating the door is open, the parking brake signal indicating the parking brake is engaged, and the first brake signal indicating the first brake is engaged.
1 Assignment
0 Petitions
Accused Products
Abstract
A braking system may include a first brake, a parking brake, a warning system, and a control system. A parking brake system may allow an operator to selectively engage the parking brake. The control system may include a first brake detector that indicates when the first brake is engaged, a parking brake detector that indicates when the parking brake is engaged, and a door state detector that indicates when a door open. The control system may selectively activate a portion of the parking brake system when the first brake is engaged, activate the warning system when the door is open and the parking brake is engaged, and activate the warning system when the door is open, the parking brake is engaged, and the first brake is engaged. A speed sensor may be used to prevent the parking brake from engaging above a predetermined speed.
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Citations
20 Claims
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1. A braking system for a vehicle comprising:
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a first brake; a parking brake associated with a parking brake system, wherein the parking brake system is adapted to allow an operator to selectively engage the parking brake; a warning system; and a control system associated with the first brake, the parking brake, and the warning system, wherein the control system comprises; a first brake state detector adapted to output a first brake signal when the first brake is engaged, a parking brake state detector adapted to output a parking brake signal when the parking brake is engaged, and a door state detector adapted to output a door position signal when a door is in an open position, wherein the control system is adapted to; activate a portion of the parking brake system in response to receiving the first brake signal, activate the warning system in response to receiving the door position signal without receiving the parking brake signal, and activate the warning system in response to receiving the door position signal indicating the door is open, the parking brake signal indicating the parking brake is engaged, and the first brake signal indicating the first brake is engaged. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for controlling a brake system of a vehicle to properly engage a parking brake and provide warnings to an operator, the method comprising the steps of:
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receiving, at a control system; a first brake signal from a first brake detector if a first brake is engaged, a parking brake signal from a parking brake detector if the parking brake is engaged, a door position signal from a door state detector if a door of the vehicle is open, and a vehicle speed signal indicative of the speed of the vehicle from a speed sensor; and preventing, at the control system, the parking brake from engaging if the speed signal is above a predetermined value or if the control system fails to receive the first brake signal; and activating a warning system if; the door position signal is received by the control system without receiving the parking brake signal, and the door position signal that indicates the door is open, the parking brake signal that indicates the parking brake is engaged, and the first brake signal that indicates the first brake is engaged are received by the control system. - View Dependent Claims (15, 16, 17, 18)
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19. A braking system for a vehicle comprising:
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a load brake; a parking brake; a warning system; a speed sensor adapted to determine a speed of the vehicle; and a control system associated with the load brake, the parking brake, the warning system, and the speed sensor, wherein the control system comprises; a load brake state detector adapted to determine if the load brake is engaged, a parking brake state detector adapted to determine if the parking brake is engaged, and a door state detector adapted to determine if a door is in an open position, wherein the control system is adapted to; prevent the parking brake from engaging if the load brake state detector indicates the load brake is disengaged or the speed sensor indicates the speed of the vehicle is above a predetermined level, activate the warning system if the door state detector indicates that the door is in the open position without receiving the parking brake state detector, and activate the warning system if the door state detector indicates that the door is in the open position, the parking brake state detector indicates that the parking brake is engaged, and the load brake state detector indicates the load brake is engaged. - View Dependent Claims (20)
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Specification