Electrically operated parking brake control system
First Claim
1. An electronically operated parking brake for a vehicle comprising:
- (a) a switch adapted to be operated by a user;
(b) a control system receiving at least two parameters and informing from the switch;
wherein (c) the first parameter being the vehicle'"'"'s speed and wherein (d) if the vehicle'"'"'s speed does not equal zero and the control system receives information from the switch indicating that the switch has been activated for a predetermined period of time, then the control system enters a manual override mode where the control system permits actuation of the parking brake;
(e) the second parameter being related to a position of a brake pedal; and
wherein if the position of the brake pedal is in an actuate position then the control system enters an emergency stop mode where braking force is progressively applied.
1 Assignment
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Accused Products
Abstract
A system and method for controlling an electrically operated parking brake-by-wire system is disclosed. More particularly to a method and system for control of electrically operated parking brake-by-wire systems that interfaces with various elements and systems of a motor vehicle; processes information obtained from vehicle systems, parking brake by wire systems, and the driver/user; and uses this information to safely control the operation of the parking brake-by-wire system, alerting the driver/user to potential problems associated with operation of the parking brake-by-wire system and related vehicle systems. The present invention also includes provisions to provide feedback to users and handle situations where the parking brake is actuated while the vehicle is in motion.
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Citations
16 Claims
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1. An electronically operated parking brake for a vehicle comprising:
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(a) a switch adapted to be operated by a user;
(b) a control system receiving at least two parameters and informing from the switch;
wherein(c) the first parameter being the vehicle'"'"'s speed and wherein (d) if the vehicle'"'"'s speed does not equal zero and the control system receives information from the switch indicating that the switch has been activated for a predetermined period of time, then the control system enters a manual override mode where the control system permits actuation of the parking brake;
(e) the second parameter being related to a position of a brake pedal; and
wherein if the position of the brake pedal is in an actuate position then the control system enters an emergency stop mode where braking force is progressively applied.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
the control system attempts to confirm proper operation by using software and wherein if the control system fails to confirm proper operation, then the control system continues to illuminate the fault light and sets a residual fault.
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6. The electronically operated parking brake according to claim 5, wherein the residual fault remains for at least one ignition cycle.
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7. The electronically operated parking brake according to claim 5, wherein the residual fault can only be cleared by software.
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8. The electronically operated parking brake according to claim 1, wherein the control system includes at least one sub-system and wherein a default condition of the sub-system is set at a fault condition unless the control system confirms proper operation of the sub-system, and wherein
after the control system has determined proper operation of the sub-system, then the control system changes the fault condition to an operating condition.
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9. An electronically operated parking brake for a vehicle comprising:
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(a) a receiving means for receiving an input from a user;
(b) a control means for controlling a system receiving at least two parameters and information from the receiving means;
wherein(c) the first parameter being the vehicle'"'"'s speed and wherein (d) if the vehicle'"'"'s speed does not equal zero and the control means receives information from the receiving means indicating that the receiving means has been activated for a predetermined period of time, then the control means enters a manual override mode where the control means permits actuation of the parking brake;
(e) the second parameter being related to a position of a brake pedal; and
wherein if the position of the brake pedal is in an actuate position then the control means enters an emergency stop mode where braking force is progressively applied.- View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
the control means attempts to confirm proper operation by using software and wherein if the control means fails to confirm proper operation, then the control means continues to illuminate the fault light and sets a residual fault.
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14. The electronically operated parking brake according to claim 13, wherein the residual fault remains for at least one ignition cycle.
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15. The electronically operated parking brake according to claim 13, wherein the residual fault can only be cleared by software.
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16. The electronically operated parking brake according to claim 9, wherein the control means includes at least one sub-system and wherein a default condition of the sub-system is set at a fault condition unless the control means confirms proper operation of the sub-system, and wherein
after the control means has determined proper operation of the sub-system, then the control means changes the fault condition to an operating condition.
Specification