Occupant protection device
First Claim
1. A vehicle occupant protection device comprising:
- a headrest configured to be movable forward with respect to a vehicle;
a processor configured to determine whether a collision can be avoided;
an actuator configured to receive collision information from the processor and to implement the forward movement of the headrest in a pre-crash stage before an object crashes into a backside of the vehicle, the pre-crash stage indicating that a crash cannot be avoided; and
an electrical capacitance sensor disposed in the headrest and connected to the processor, andwherein the processor is configured to control an amount of the forward movement of the headrest during the pre-crash stage according to an electrical capacitance change gradient, which is derived from a change in a ratio of a detected electrical capacitance and a reference electrical capacitance with respect to a change in time, andwherein said detected electrical capacitance is detected by the electrical capacitance sensor when the headrest moves forward.
1 Assignment
0 Petitions
Accused Products
Abstract
A vehicle occupant protection device comprising a headrest configured to be movable forward with respect to a vehicle, and an actuator configured to implement the forward movement is disclosed. The device is configured to protect a vehicle occupant by operating the actuator to move the headrest forward in a pre-crash stage in the course of an object crashing into the vehicle from backside of the vehicle. The headrest is provided with an electrical capacitance sensor. The device is configured to control an amount of the forward movement of the headrest according to a variation manner of electrical capacitance, which electrical capacitance is detected by the electrical capacitance sensor when the headrest moves forward.
44 Citations
11 Claims
-
1. A vehicle occupant protection device comprising:
-
a headrest configured to be movable forward with respect to a vehicle; a processor configured to determine whether a collision can be avoided; an actuator configured to receive collision information from the processor and to implement the forward movement of the headrest in a pre-crash stage before an object crashes into a backside of the vehicle, the pre-crash stage indicating that a crash cannot be avoided; and an electrical capacitance sensor disposed in the headrest and connected to the processor, and wherein the processor is configured to control an amount of the forward movement of the headrest during the pre-crash stage according to an electrical capacitance change gradient, which is derived from a change in a ratio of a detected electrical capacitance and a reference electrical capacitance with respect to a change in time, and wherein said detected electrical capacitance is detected by the electrical capacitance sensor when the headrest moves forward.
-
-
2. A vehicle occupant protection device, comprising:
-
a headrest; a processor configured to determine whether a collision can be avoided; and a driving mechanism configured to receive collision information from the processor and to drive the headrest forward with respect to a vehicle at a collision pre-stage before collision of an object with a back of the vehicle to protect an occupant of the vehicle, wherein an electrostatic capacity sensor is arranged in the headrest, and wherein the processor is configured to control an amount of forward movement of the headrest during the collision pre-stage according to a change gradient of the electrical capacitance detected by the electrostatic capacity sensor upon forward movement of the headrest. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11)
-
Specification