Aisin Seiki Kabushiki Kaisha

Yusuke Takahashi

Isao Honda

Yoshiaki Tomatsu

Hiroyuki Fujii

Takahiro Izuno

Tomomi Tomizawa

A seat passenger determination apparatus includes: a first determination processing unit configured to determine a passenger is not seated on a vehicle seat by having gotten out of the vehicle and transfer the mode to a not-seated recognition mode when a load variation width detected by a load detection apparatus falls within a first threshold value in a state in which a non-fastened state of a seatbelt is detected; and a second determination processing unit configured to determine the passenger is not seated on the vehicle seat by having gotten out of the vehicle and transfer the mode to the not-seated recognition mode when the load variation width detected by the load detection apparatus falls within a second threshold value which is larger than the first threshold value during a predetermined time when the fact that the seatbelt has changed from the fastened state to the non-fastened state is detected.

Seat occupant determining apparatus

A seat occupancy determination device configured to be provided at one of seating portions of a plural vehicle seats includes a pair of seat occupancy amount detection devices detecting a seat occupancy amount increasing and decreasing in response to a change of a load applied to each portion of the seating portion, a seat occupancy state determination device determining a seat occupancy state of the vehicle seat, an unbalanced load detection device detecting a degree of unbalance of the load applied to a right portion and a left portion of the seating portion, and a seat occupancy threshold value setting device setting a seat occupancy threshold value and correcting the seat occupancy threshold value in response to the degree of unbalance of the load applied to the right portion and the left portion of the seating portion based on a detected signal transmitted from the unbalanced load detection device.

Seat occupancy determination device and seat occupancy determination method

A seat apparatus for a vehicle includes a load detection device placed at a front and a rear of one of a right-left pair of the attachment members so as to be spaced apart from each other, the load detection device measuring a load applied to a seat to distinguish an existence of a passenger and a type of a passenger, a detection influence determination device determining an existence of an influence on a passenger determination performance of the load detection device in a case where a collision load value detected by the load detection device in the case of a collision of the vehicle corresponds to a detected value between a preset first collision load value and a preset second collision load value, and a collision influence alert device outputting an alert in a case where the detection influence determination device determines that the passenger determination performance is influenced.

Seat apparatus for vehicle

A seat passenger determination apparatus includes: a door closing timing detector configured to detect door closing timing after having gotten out of the vehicle directly or indirectly; a counter unit configured to start counting when the load detected by the load detector falls within a threshold value and reset the count when the load is deviated from the threshold value; a determination processing unit configured to determine that no passenger is seated on the vehicle seat because the passenger has gotten out, and transfer the mode to the not-seated recognition mode when the state in which the load within the predetermined threshold value continues for a predetermined time is detected by the counter unit; and a count restricting unit configured to stop the counting process performed by the counter unit temporarily when the door-closed state is detected by the door closing timing detector during the determination by the determination processing unit.

Seat passenger determination apparatus

A seat load detection apparatus includes: a load detector detecting part of a load acting on a vehicle seat which is capable of changing the posture of a seatback forward from the first stage position as a most upright position of a seatable position to the forwardly inclined position which is a forwardly inclined position on which the passenger cannot be seated; a load body determination unit determining a load body acting on the vehicle seat on the basis of a detected load detected by the load detector; a seat posture detector detecting the forwardly inclined position of the seatback; and a state determination unit determining the state change of the vehicle seat on the basis of the variation of the detected load and restrict the determination of the state change of the vehicle seat on the basis of an output from the seat posture detector.

Seat load detection device

In a seatbelt warning apparatus, a control unit performs a transition process configured to transfer the mode to a baggage recognition mode on the condition that a load detection unit detects a load larger than a first load and smaller than a second load continuously for a preset time in the not-seated recognition mode, and to the not-seated recognition mode on the condition that the load detection unit detects a load smaller than a predetermined load continuously for a preset time in the baggage recognition mode, and a transfer time trequired to transferring to the baggage recognition mode in the transition process is set to be shorter than a time T required for increasing the load from the first load to the second load by the vehicle acceleration characteristics.

Seat belt warning device

A seating determination apparatus includes a transition processing unitconfigured to make a transition of the state between a first seating determination state in which an airbag apparatus is brought into an operation-permitted state and the second seating determination state in which the airbag apparatus is in the operation-prohibited state when a transition condition on the basis of a magnitude relationship between a seat load and a preset threshold value is satisfied, and configured to prohibit the transition of the state between the first seating determination state and the second eating determination state when the direction of variation of the seat load is determined to have inverted before a predetermined time set in advance has elapsed from a time point when the transition condition is satisfied.

Growing community of inventors

Toyota, Japan

Yusuke Takahashi