Aisin Seiki Kabushiki Kaisha

Aisin Corporation

Takahiro Izuno

Hiroyuki Fujii

Isao Honda

Yoshiaki Tomatsu

Yusuke Takahashi

Shintaro Nakaya

Masahiro Takeuchi

A tiptoe position estimating device includes: a camera configured to capture an image of an interior of a vehicle; and a human body information acquisition unit configured to acquire, from a captured image obtained by capturing an image of a person seated on a seat in the interior by the camera, position information of skeleton points at a plurality of positions of a body of the person. The human body information acquisition unit is configured to acquire thigh information which is position information of a skeleton point of a thigh of the person, and lower leg information which is position information of a skeleton point of a lower leg of the person. The human body information acquisition unit includes a tiptoe position estimating part configured to estimate a tiptoe position of a foot of the person based on the acquired thigh information and the acquired lower leg information.

Tiptoe position estimating device and fingertip position estimating device

A seating detection method includes: detecting whether a seat belt sensor in a vehicle seat is in an ON state or an OFF state; detecting whether a pressure sensitive sensor in a seat skin constituting a seating surface is in an ON state or an OFF state; and determining a foreign object insertion state in which a foreign object is inserted between the seating surface and a child seat based on whether the seat belt sensor is in the ON state or the OFF state and whether the pressure sensitive sensor is in the ON state or the OFF state. When the pressure sensitive sensor is changed from the ON state to the OFF state in a state in which the seat belt sensor is maintained in the ON state after the seat belt sensor is changed to the ON state, it is determined as the foreign object insertion state.

Seating detection method and seating detection device

An occupant detection method includes detecting a load applied to a seat for a vehicle, detecting that an occupant is seated at the seat, holding a local maximum of the load which is detected when the occupant becomes seated, setting a standard value of the load in a state in which the occupant is seated at the seat, and estimating a body height of the occupant on the basis of a comparison between the local maximum of the load and the standard value of the load, wherein when the body height of the occupant is estimated, the larger a difference between the local maximum of the load and the standard value of the load is, the higher body height of the occupant is estimated.

Occupant detection method and occupant detection apparatus

An occupant discrimination system of a vehicle seat includes a load detecting portion disposed on a lower side of a seat and detecting a load acting on the seat; an occupant discrimination portion discriminating a state of an occupant among a no occupant state, adult seated state, and child seat fixed states based at least on a load detected from the load detecting portion and a load continuation duration.

Occupant discrimination system of vehicle seat

An occupant sensing method includes steps of: sensing installation of a child seat on a seat of a vehicle; storing a detection value of a load sensor which is provided to be attached to the seat and detects an input load as a first load value, when the installation of the child seat is sensed; storing a detection value of the load sensor as a second load value when a predetermined time period has elapsed from a time point at which the installation of the child seat is sensed; and estimating a load change amount at the time of getting on/off which is a change amount of a load that is generated as the occupant gets on/off the child seat, based on a difference value between the first load value and the second load value.

Occupant sensing method and occupant sensing device

An occupant detection method includes detecting a load applied to a seat for a vehicle, determining whether or not an occupant is seated at the seat, calculating a load deviation value indicating deviation of the load, determining whether or not the deviation exists at the seat on the basis of the load deviation value, and estimating that a seating posture of the occupant is inclined in a direction in which the load is deviated in a case where it is determined that the deviation exists and that a stable state is established, the stable state corresponding to a state in which a difference between a first change amount in a first cycle and a second change amount in a second cycle is within a predetermined range.

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 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

Kariya, Japan

Takahiro Izuno