Discrete hardware safing circuit
First Claim
Patent Images
1. A discrete hardware safing circuit, comprising:
- a sensor that provides a signal indicating a vehicle acceleration in a direction;
at least one comparator that determines if the vehicle acceleration exceeds a predetermined threshold;
a capacitive switch activated based on a determination from the at least one comparator that the predetermined threshold was exceeded and remaining activated as long as the predetermined threshold is exceeded and for an additional time period; and
a router that routes an enable signal based on the activation of the capacitive switch.
2 Assignments
0 Petitions
Accused Products
Abstract
A discrete hardware safing circuit includes a sensor the provides a signal indicating a vehicle acceleration in a direction and at least one comparator that determines if the vehicle acceleration exceeds a predetermined threshold. A capacitive switch is activated based on a determination from the at least one comparator that the predetermined threshold was exceeded and remains activated as long as the predetermined threshold is exceeded and for an additional time period. A router routes an enable signal based on the activation of the capacitive switch.
-
Citations
20 Claims
-
1. A discrete hardware safing circuit, comprising:
-
a sensor that provides a signal indicating a vehicle acceleration in a direction;
at least one comparator that determines if the vehicle acceleration exceeds a predetermined threshold;
a capacitive switch activated based on a determination from the at least one comparator that the predetermined threshold was exceeded and remaining activated as long as the predetermined threshold is exceeded and for an additional time period; and
a router that routes an enable signal based on the activation of the capacitive switch. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A vehicle occupant protection system, comprising:
-
a sensor that provides a signal indicating a vehicle acceleration in a direction;
at least one comparator that determines if the vehicle acceleration exceeds a predetermined threshold;
a capacitive switch activated based on a determination from the at least one comparator that the predetermined threshold was exceeded and remaining activated as long as the predetermined threshold is exceeded and for an additional time period;
a router that routes an enable signal based on the activation of the capacitive switch to an enable logic circuit for pin activation a processor providing a vehicle crash condition signal;
a deployment device that deploys an occupant protection device based on the vehicle crash condition signal and the pin activation. - View Dependent Claims (10, 11, 12, 13, 14)
-
-
15. A method for operating a discrete hardware safing circuit, comprising:
-
providing a signal indicating a vehicle acceleration in a direction;
determining if the vehicle acceleration exceeds a predetermined threshold;
activating a capacitive switch based on a determination that the predetermined threshold was exceeded and keeping the capacitive switch activated as long as the predetermined threshold is exceeded and for an additional time period; and
routing an enable signal based on the activation of the capacitive switch. - View Dependent Claims (16, 17, 18, 19, 20)
-
Specification