Method and system for classifying vehicle conditions
AssigneeRobert Bosch GmbH
InventorKyle W. Williams
Life of this patent
Estimating the term…
Abstract
A method and system for classifying vehicle conditions. Lateral acceleration information, vertical acceleration information, and roll angle information is acquired and the roll angle information is used for compensating the acceleration information for the effects of gravity. The compensated acceleration information is compared with one or more thresholds to change calibrate able counter values and additional threshold comparisons are used to determine the vehicle condition or rollover type.
Claims18
A method for detecting a rollover condition of a vehicle having x, y, and z-axes, a laterally oriented reference frame corresponding to the y-axis, and a vertically oriented reference frame corresponding to the z-axis, the method comprising:
- acquiring first lateral acceleration information representative of an acceleration of the vehicle in the direction of the y-axis;
- acquiring first vertical acceleration information representative of an acceleration of the vehicle in the direction of the z-axis;
- acquiring roll angle information based on an angle of the vehicle about the x-axis and relative to the y-axis;
- processing the roll angle information to provide second lateral acceleration information and second vertical acceleration information;
- determining compensated lateral acceleration information based on a combination of the first and second lateral acceleration information;
- determining compensated vertical acceleration information based on a combination of the first and second vertical acceleration information;
- changing a counter value based on a comparison of compensated acceleration information and a first threshold value;
- and
- comparing the counter value with a second threshold value to determine a type of vehicle condition.
A system for classifying a rollover condition of a vehicle having x, y, and z-axes, the system comprising:
- one or more sensors operable to sense an acceleration of the vehicle;
- and
- a processor operable to receive information from the one or more sensors;
- compensate the information received from the one or more sensors based on an angle of the vehicle;
- compare a value based on the compensated information to a threshold value;
- change a value associated with a counter;
- and
- determine a type of vehicle condition based on the value associated with the counter.
A vehicle having x, y, and z reference axes and a laterally and vertically oriented reference frame corresponding to the y and z-axis respectively, the vehicle comprising:
- a frame;
- one or more sensors coupled to the frame and operable to sense an acceleration of the vehicle;
- and
- a processor coupled to the vehicle and operable to receive information from the one or more sensors, and including
- a gravity compensation module;
- an acceleration counter module;
- and
- a classification module;
- wherein the processor is operable to compensate the information received from the one or more sensors based on an angle of the vehicle, change a value associated with a counter in response to the compensated information, and determine a type of vehicle condition based on the value associated with the counter.
Dependencies are inferred from the claim text.