Sensor-triggering of friction and regenerative braking
First Claim
Patent Images
1. A method for automatically activating simultaneously a friction braking system and a regenerative braking system of a vehicle, the method comprising the steps of:
- detecting a position and a movement of one or more objects in surroundings of a vehicle;
detecting an operation of a brake pedal of the vehicle;
calculating a risk of collision of the vehicle with the one or more objects based upon the position and the movement of the one or more objects, the calculated risk of collision representing a probability that a collision of the vehicle with the one or more objects is unavoidable without an immediate intervention of the friction braking system and the regenerative braking system;
in response to the brake pedal being operated with an operating speed exceeding a predetermined operating speed, or the calculated risk of collision exceeding a predetermined risk of collision, automatically activating simultaneously the friction braking system and the regenerative braking system of the vehicle;
receiving, from a camera on the vehicle, a continuous video stream into buffer storage;
receiving, from a sensor on the vehicle, a signal to transfer the continuous video stream from the buffer storage to a memory, wherein receiving from the sensor on the vehicle a signal to transfer the continuous video stream comprises receiving a signal that the regenerative braking system has been automatically activated;
receiving, from a system controller on the vehicle, a first predefined time, the first predefined time indicating a time prior to the receiving of the signal to transfer in which to initiate a transfer of the continuous video stream from the buffer storage to the memory;
receiving, from the system controller on the vehicle, a second predefined time, the second predefined time indicating a time after the receiving of the signal to transfer in which to stop the transfer of the continuous video stream from the buffer storage to the memory; and
saving the continuous video stream in the memory.
9 Assignments
0 Petitions
Accused Products
Abstract
In an emergency stop situation, the regenerative braking system is used to assist in rapid deceleration, by combining regenerative braking with conventional friction brakes. Sensors can also be used to trigger the braking systems, even before the driver is able to react. These sensors might include external cameras, ABS activation detection, radar and ultrasound.
-
Citations
17 Claims
-
1. A method for automatically activating simultaneously a friction braking system and a regenerative braking system of a vehicle, the method comprising the steps of:
-
detecting a position and a movement of one or more objects in surroundings of a vehicle; detecting an operation of a brake pedal of the vehicle; calculating a risk of collision of the vehicle with the one or more objects based upon the position and the movement of the one or more objects, the calculated risk of collision representing a probability that a collision of the vehicle with the one or more objects is unavoidable without an immediate intervention of the friction braking system and the regenerative braking system; in response to the brake pedal being operated with an operating speed exceeding a predetermined operating speed, or the calculated risk of collision exceeding a predetermined risk of collision, automatically activating simultaneously the friction braking system and the regenerative braking system of the vehicle; receiving, from a camera on the vehicle, a continuous video stream into buffer storage; receiving, from a sensor on the vehicle, a signal to transfer the continuous video stream from the buffer storage to a memory, wherein receiving from the sensor on the vehicle a signal to transfer the continuous video stream comprises receiving a signal that the regenerative braking system has been automatically activated; receiving, from a system controller on the vehicle, a first predefined time, the first predefined time indicating a time prior to the receiving of the signal to transfer in which to initiate a transfer of the continuous video stream from the buffer storage to the memory; receiving, from the system controller on the vehicle, a second predefined time, the second predefined time indicating a time after the receiving of the signal to transfer in which to stop the transfer of the continuous video stream from the buffer storage to the memory; and saving the continuous video stream in the memory. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A method for automatically activating simultaneously a friction braking system and a regenerative braking system of a vehicle, the method comprising the steps of:
-
detecting a position and a movement of one or more objects in surroundings of a vehicle; detecting an operation of a brake pedal of the vehicle; calculating a risk of collision of the vehicle with the one or more objects based upon analyzing 2-dimensional or 3-dimensional vectors representing the velocity and direction of the vehicle and the one or more objects, the calculated risk of collision representing a probability that, based on the vector analysis, the vehicle and the one or more objects will reach a point in space at approximately the same time without an immediate intervention of the friction braking system and the regenerative braking system; in response to the brake pedal being operated with an operating speed exceeding a predetermined operating speed, or the calculated risk of collision exceeding a predetermined risk of collision, automatically activating simultaneously the friction braking system and the regenerative braking system of the vehicle; receiving, from a camera on the vehicle, a continuous video stream into buffer storage; receiving, from a sensor on the vehicle, a signal to transfer the continuous video stream from the buffer storage to a memory, wherein receiving from the sensor on the vehicle a signal to transfer the continuous video stream comprises receiving a signal that the regenerative braking system has been automatically activated; receiving, from a system controller on the vehicle, a first predefined time, the first predefined time indicating a time prior to the receiving of the signal to transfer in which to initiate a transfer of the continuous video stream from the buffer storage to the memory; receiving, from the system controller on the vehicle, a second predefined time, the second predefined time indicating a time after the receiving of the signal to transfer in which to stop the transfer of the continuous video stream from the buffer storage to the memory; and saving the continuous video stream in the memory. - View Dependent Claims (13)
-
-
14. A system for automatically activating simultaneously a friction braking system and a regenerative braking system of a vehicle, the system comprising:
-
a first sensor on the vehicle to detect a position and movement of one or more objects in surroundings of a vehicle; a second sensor on the vehicle to detect operation of a brake pedal of the vehicle; a regenerative braking system of the vehicle; a friction braking system of the vehicle; a system controller on the vehicle communicatively coupled to the first sensor, the second sensor, the regenerative braking system and the friction braking system, the system controller configured to calculate a risk of collision of the vehicle with the one or more objects based upon the position and the movement of the one or more objects, and in response to the brake pedal being operated with an operating speed exceeding a predetermined operating speed, or the calculated risk of collision exceeding a predetermined risk of collision, automatically activate simultaneously the friction braking system and the regenerative braking system of the vehicle; a camera on the vehicle communicatively coupled to the system controller and producing a continuous video stream; a buffer storage communicatively coupled to the camera and the system controller and storing the continuous video stream for a period of time; and a memory communicatively coupled to the camera, the buffer storage, and the system controller; the system further configured to; receive, from the camera, the continuous video stream into the buffer storage; receive, from at least one of the first and second sensors, a signal to transfer the continuous video stream from the buffer storage to the memory, wherein the signal to transfer the continuous video stream comprises a signal that the regenerative braking system has been automatically activated; receive, from the system controller, a first predefined time, the first predefined time indicating a time prior to the receiving of the signal to transfer in which to initiate a transfer of the continuous video stream from the buffer storage to the memory; receive, from the system controller, a second predefined time, the second predefined time indicating a time after the receiving of the signal to transfer in which to stop the transfer of the continuous video stream from the buffer storage to the memory; and save the continuous video stream in the memory. - View Dependent Claims (15, 16, 17)
-
Specification