Abstract:
A vehicle impact-sensing system is disclosed which discriminates a severe impact event from a minor impact incident. The sensing system is enabled by a preliminary stage of the sensing algorithm in response to an occurrence of an acceleration in excess of an enabling threshold. In the sensing algorithm, a first phase evaluates the likelihood potential of an impact event using a measure derived from the signals provided by a remote sensor at the front end of the vehicle. A second phase determines the timing to trigger the deployment of airbags by using the predicted occupant movement as the measure. A third phase determines the severity of the impact event using a measure derived from accelerometer signals and deploys either a single-stage or a multi-stage inflation of airbags.
Abstract:
A belt tension and energy absorbing apparatus for a motor vehicle seat belt including a stationary tube attached to a body of the motor vehicle, a piston slidable in the stationary tube, a connecting member between the seat belt and the piston, a source of gas at elevated pressure, and an energy absorber. A bulkhead in the stationary tube between the ends thereof cooperates with the piston in defining a pressure chamber in the stationary tube. When sensors on the motor vehicle detect rapid deceleration, gas from the source of gas at elevated pressure is introduced into the pressure chamber and propels the piston through a tension stroke in a first direction. After the tension stoke, the thrust of an occupant on the seat belt propels the piston in a second direction through an energy absorbing stroke during which the piston displaces the bulkhead a fraction of the occupant's kinetic energy is converted into work. Because the volume of the pressure chamber can be made relatively small without compromising the length of the energy absorbing stroke of the piston, the required volume of gas at elevated pressure and the expense attributable to producing that volume of gas are reduced.
Abstract:
A method and system for recognizing and verifying the identity of a driver and front seat passenger of a vehicle. A vehicle owner uploads profile data for several individuals who may be a driver or passenger to a database in the vehicle. When a driver or passenger enters the vehicle, the system uses the profile data—which can include height, weight, and gender information about the individual—along with vehicle data such as seat position, to identify the driver or passenger from the database. The profile data for the known individual is then used to adjust the position of the seat and other components in the cockpit. The profile data is also used by various safety and convenience systems onboard the vehicle.
Abstract:
A vehicle includes at least one reconfigurable system having a plurality of selectively variable parameters, and a controller that is operatively connected to the at least one reconfigurable system to control the values of the plurality of selectively variable parameters. The controller is also configured to receive data indicative of physical characteristics of a person from at least one data storage medium, and configured to determine values of the selectively variable parameters according to a predetermined algorithm based on the data indicative of physical characteristics of a person. The controller is also configured to cause the selectively variable parameters to assume the determined values.
Abstract:
An occupant restraint device includes an inflatable airbag cushion, a tether including a first end connected to the airbag cushion and a second end connected to a tether control mechanism. The tether control mechanism including a tether payout mechanism and a tether length adjustment mechanism. The tether length adjustment mechanism controls a length of tether available for payout by the tether payout mechanism, and the tether payout mechanism is operationally decoupled from the tether length adjustment mechanism.
Abstract:
A method and system for automatically adjusting a driver seat, steering wheel, pedals, mirrors, and other components of a vehicle, based on information about the size of the driver. The method uses basic information about the driver's size—including standing height, sitting height, and gender—in a model which estimates all anthropometric data for the driver. The anthropometric data for the driver—including upper and lower arm and leg lengths, torso length, and other dimensions—is used in inverse kinematic calculations to determine optimal positions and orientations for the adjustable components of the vehicle's cockpit. The method then pre-adjusts the components before the driver enters the vehicle, and makes compatible adjustments to the mirrors and other components if the driver adjusts the driver seat.
Abstract:
A seat assembly for a vehicle includes a lower seat portion and a seatback portion. The seatback portion is selectively movable to vary the reclination angle of the seatback portion. The seat assembly is configured so that a first part of the lower seat portion rises relative to a second part of the lower seat portion so that the lower seat portion acts as an occupant restraint when a predetermined condition exists. Exemplary predetermined conditions include the reclination angle changing, the reclination angle exceeding a predetermined amount, and conditions indicative of an elevated risk of vehicle impact.
Abstract:
An adjustable head tool (AHT) is configured for positioning a free motion headform (FMH) having a regulated FMH backoff requirement prior to an impact between the FMH and a target surface having a target point. The AHT has a built-in or a variable backoff angle relative to the position of the target point, and includes a cranial portion and an adjustable facial template. The cranial portion encloses a linkage assembly, and the facial template has one or more facial features. A rotary dial translates the facial template with respect to the cranial portion to maintain the regulated FMH backoff requirement. The cranial portion includes a forehead impact zone having a first set of demarcations, and the rotary dial has a second set of demarcations corresponding to the first set of demarcations. The dial is set so the second set of demarcations matches the first set during positioning of the AHT.
Abstract:
An occupant restraint device includes an inflatable airbag cushion, a tether including a first end connected to the airbag cushion and a second end connected to a tether control mechanism. The tether control mechanism including a tether payout mechanism and a tether length adjustment mechanism. The tether length adjustment mechanism controls a length of tether available for payout by the tether payout mechanism, and the tether payout mechanism is operationally decoupled from the tether length adjustment mechanism.
Abstract:
An algorithm that is part of a collision preparation system that provides selective and limited vehicle braking to avoid undesirable intrusive high-G braking while still giving the system adequate time to activate collision mitigation devices on the vehicle before impact with an object. If a predicted time to collision between the vehicle and the object is less than a required time to collision, which is determined by how much time is necessary for a certain collision mitigation device to be activated, the algorithm calculates a time dilation deceleration. The system causes the vehicle to automatically brake to decelerate the vehicle at the time dilation deceleration until the time dilation deceleration reaches a predetermined decelerating threshold so that more time is available for the collision preparation system to determine whether to activate the collision mitigation device.