Logic and a method for detecting a vehicle rollover
AssigneeDelphi Technologies, Inc.
InventorsMariusz Geborek, Abtin Darvish, Jens Haun
Life of this patent
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Abstract
A logic for detecting vehicle rollover includes a first main activation path activated by vehicle lateral acceleration and a second main activation path activated by vehicle vertical acceleration. The logic also includes a first additional activation path activated by vehicle roll angle, a second additional activation path activated by vehicle roll rate, and a third additional activation path activated by vehicle longitudinal acceleration. Activation of each path results from the sensor specific for that path when the output exceeds a threshold value. Logic activation occurs when at least one main activation path and at least one additional activation path are activated.
Claims18
A logic for detecting a vehicle rollover comprises
- a first main activation path that is activated if a signal of a vehicle lateral acceleration sensor exceeds a predefined threshold value;
- a second main activation path that is activated if a signal of a vehicle vertical acceleration sensor exceeds a predefined threshold value;
- a first additional activation path that is activated if a vehicle roll angle exceeds a predefined threshold value and a signal of a vehicle roll rate sensor exceeds a predefined threshold value;
- a second additional activation path that is activated if the signal of the vehicle roll rate sensor exceeds a predefined second threshold value;
- and
- a third additional activation path that is activated if a signal of a vehicle longitudinal acceleration sensor exceeds a predefined threshold value;
- wherein activation of at least one of the first main activation path and the second main activation path and activation of at least one of the first additional activation path, the second additional activation path and the third additional activation path is needed for activation of the logic.
A method of determining a rollover of a vehicle, comprising the steps of:
- detecting a lateral acceleration of a vehicle;
- activating a first main activation path if the lateral acceleration exceeds a predefined threshold value;
- detecting a vertical acceleration of a vehicle;
- activating a second main activation path if the vertical acceleration exceeds a predefined threshold value;
- detecting a roll angle and a roll rate of a vehicle;
- activating a first additional activation path if the roll angle exceeds a predefined threshold value and simultaneously the roll rate exceeds a first predefined threshold value;
- activating a second additional activation path if the roll rate exceeds a predefined second threshold value;
- detecting a longitudinal acceleration of the vehicle;
- activating a third activation path if the longitudinal acceleration exceeds a predefined value;
- generating an output activation signal determining a possibility of rollover of the vehicle when at least one of the first main activation path and the second main activation path is activated and at least one of the first additional path, the second additional path and the third additional path is activated.
Dependencies are inferred from the claim text.