JP7071566B2 - Control device for occupant protection device, occupant protection system, and control method for occupant protection device - Google Patents

Description

The present invention relates to a control device for an occupant protection device, a occupant protection system, and a control method for the occupant protection device.

Conventionally, a vehicle is provided with an occupant protection device such as a seatbelt pretensioner, an airbag, etc. that protects an occupant in the event of a collision. If the posture of the occupant is not appropriate, the occupant protection device cannot fully exert the protection function of the occupant. Therefore, there is a device that controls the deployment of the airbag according to the angle between the seat surface and the backrest (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2009-179154

However, in recent years, the seat arrangements of recent vehicles have been diversified in consideration of the comfort of the occupants, and the degree of freedom of the occupant posture has been increased. In addition, when the automatic driving of the vehicle is put into practical use in the future, the vehicle will have a higher degree of freedom in the occupant's posture in the driver's seat.

In this way, when the degree of freedom of the occupant's posture is further increased and the occupant is in a free posture in the passenger compartment, the occupant protection device can be used by the occupant's protective device even when considering the angle between the seat surface and the backrest of the occupant. It may not be possible to fully demonstrate the protective function.

The embodiment of the present invention has been made in view of the above, and is a control device for an occupant protection device, a occupant protection system, and a control method for the occupant protection device, which can make the occupant protection device exert a occupant protection function. The purpose is to provide.

The control device of the occupant protection device according to the embodiment includes a control unit. The control unit is provided with air in front of the front seats in the passenger compartment when an impact is applied to the own vehicle having a seat whose front seats are rotatably configured so that the front seats and the rear seats face each other. Operation control is performed on a plurality of occupant protection devices including at least a bag and a center airbag provided between the front seat and the rear seat. The control unit selects an occupant protection device to be operated from the plurality of occupant protection devices according to the tilt angle of the backrest of the seat, and the front seat and the rear seat are directed in the forward direction of the own vehicle. When an impact is applied to the own vehicle in the above state, the airbag is deployed without deploying the center airbag, and the impact is applied to the own vehicle while the front seat and the rear seat are facing each other. , The center airbag is deployed without deploying the airbag.

The control device of the occupant protection device, the occupant protection system, and the control method of the occupant protection device according to the embodiment can make the occupant protection device exert the occupant protection function.

FIG. 1 is an explanatory diagram showing an example of a vehicle provided with a control device according to an embodiment. FIG. 2 is a block diagram showing the configuration of the occupant protection system and the control device according to the embodiment. FIG. 3 is an explanatory diagram showing an example of occupant protection device control information according to the embodiment. FIG. 4 is an explanatory diagram showing an example of operation control of the occupant protection device by the control unit according to the embodiment. FIG. 5 is an explanatory diagram showing an example of operation control of the occupant protection device by the control unit according to the embodiment. FIG. 6 is an explanatory diagram showing an example of operation control of the occupant protection device by the control unit according to the embodiment. FIG. 7 is an explanatory diagram showing an example of operation control of the occupant protection device by the control unit according to the embodiment. FIG. 8 is an explanatory diagram showing an example of operation control of the occupant protection device by the control unit according to the embodiment. FIG. 9 is an explanatory diagram showing an example of operation control of the occupant protection device by the control unit according to the embodiment. FIG. 10 is an explanatory diagram showing an example of operation control of the occupant protection device by the control unit according to the embodiment. FIG. 11 is a flowchart showing a process executed by the control unit according to the embodiment.

The control device of the occupant protection device, the occupant protection system, and the control method of the occupant protection device according to the embodiment will be described in detail with reference to the accompanying drawings. The present invention is not limited to this embodiment.

First, with reference to FIG. 1, an example of a vehicle provided with the control device according to the embodiment will be described. FIG. 1 is an explanatory diagram showing an example of a vehicle (hereinafter, referred to as “own vehicle 100”) provided with the control device 1 according to the embodiment. FIG. 1 shows the arrangement of the control device 1, the occupant protection device, various sensors, and the like. An example of a specific configuration of the occupant protection system according to the embodiment will be described later with reference to FIG.

Further, here, a case where the own vehicle 100 is a four-seater sedan type with a right-hand drive (the front right-hand seat is the driver's seat 41) will be described as an example, but the vehicle provided with the control device 1 has a left-hand drive. It may be a vehicle that can accommodate five or more people.

As shown in FIG. 1, the own vehicle 100 includes an automatic driving device 101. Although not shown here, the own vehicle 100 includes a camera that images the surroundings of the own vehicle and a radar that detects obstacles around the vehicle.

When the automatic driving mode is selected by the user, the automatic driving device 101 recognizes other vehicles, obstacles, lanes, etc. based on the image captured by the camera and the detection result of the radar, and accelerates / decelerates the own vehicle 100. It is a device that automatically controls the steering and steering to automatically drive the own vehicle 100.

As a result, the own vehicle 100 can freely change the inclination angle of the backrests of the driver's seat 41 and the passenger's seat 42 and the rotation position of the seat surface during automatic driving. On the other hand, during manual driving, the own vehicle 100 can freely change the tilt angle of the backrests of the driver's seat 41 and the passenger's seat 42, and the rotation position of the seat surface of the passenger's seat 42.

Further, the own vehicle 100 includes a control device 1 that controls the operation of the occupant protection device, and a detection device such as a collision sensor 21, a seat surface sensor 22, a backrest sensor 23, a foot sensor 24, and a three-dimensional sensor 25.

Further, the own vehicle 100 includes a seatbelt pretensioner 31, an airbag 32, a curtain airbag 33, a knee airbag 34, a side airbag 35, a center airbag 36, a slide lock 37, a rotation lock 38, and a reclining lock 39. To prepare for.

The pretensioner 31, airbag 32, curtain airbag 33, knee airbag 34, side airbag 35, center airbag 36, slide lock 37, rotary lock 38, and reclining lock 39 are examples of occupant protection devices. be.

The collision sensor 21 is, for example, a three-dimensional acceleration sensor that detects an impact applied to the own vehicle 100, and detects a collision of the own vehicle 100. Such collision sensors 21 are provided, for example, at the four corners of the vehicle (right side of the front part of the vehicle, left side of the front part of the vehicle, right side of the rear part of the vehicle, left side of the rear part of the vehicle) and at the center positions of both side surfaces of the vehicle.

The seat sensor 22 is, for example, a pressure-sensitive sensor. The seat surface sensor 22 is provided in the seat surface of the driver's seat 41 and the passenger seat 42, and detects the load applied to the seat surface. The backrest sensor 23 is, for example, a pressure-sensitive sensor. The backrest sensor 23 is provided in the backrests of the driver's seat 41 and the passenger's seat 42, and detects the load applied to the backrest.

The foot sensor 24 is, for example, an infrared sensor. The foot sensor 24 is provided below the driver's seat 41 and the passenger's seat 42, and detects the feet of the occupant seated in the driver's seat 41 and the passenger's seat 42. The three-dimensional sensor 25 is, for example, a TOF (Time Of Flight) sensor. The three-dimensional sensor 25 is provided in the center of the dashboard in the vehicle interior and in front of the driver's seat 41, and measures the presence / absence, position, and three-dimensional shape of an occupant.

When the collision sensor 21 detects a collision of the own vehicle 100, the pretensioner 31 instantly winds up the seat belt and restrains the occupant in the seat to prevent the occupant from being thrown out of the vehicle. ..

When the collision of the own vehicle 100 is detected, the airbag 32, the curtain airbag 33, the knee airbag 34, the side airbag 35, and the center airbag 36 are instantly expanded and expanded. Absorbs and mitigates the impact on the occupants.

The airbag 32 is provided, for example, in front of the driver's seat 41 and in front of the passenger's seat 42. The curtain airbag 33 is provided, for example, on the upper left and right windows of the vehicle interior. The knee airbag 34 is provided, for example, at the knees of the occupant of the driver's seat 41 and the knees of the occupant of the passenger seat 42.

The side airbag 35 is provided, for example, inside each door of the own vehicle 100 or between each door and the seat. The center airbag 36 is provided, for example, on the floor in the center of the vehicle interior (between the front seats (driver's seat 41 and passenger's seat 42) and the rear seat 43).

The slide lock 37 is a stopper that prohibits the driver's seat 41 and the passenger's seat 42 from sliding in the front-rear direction when the own vehicle 100 collides. The rotation lock 38 is a stopper that prohibits the rotation operation of the driver's seat 41 and the passenger's seat 42 when the own vehicle 100 collides. The reclining lock 39 is a stopper that prohibits the tilting operation of the backrests of the driver's seat 41 and the passenger's seat 42 when the own vehicle 100 collides.

When the collision sensor 21 detects a collision of the own vehicle 100, the control device 1 protects the occupants by operating the occupant protection device. In the event of a collision of the own vehicle 100, the control device 1 controls the operation of the occupant protection device according to the rotation position of the seat in the vehicle interior. As a result, the control device 1 can make the occupant protection device exert the occupant protection function according to the rotation position of the seat even when the occupant is in a free posture.

Next, with reference to FIG. 2, the configuration of the occupant protection system and the control device 1 according to the embodiment will be described. FIG. 2 is a block diagram showing the configuration of the occupant protection system and the control device 1 according to the embodiment. Of the components shown in FIG. 2, the same components as those shown in FIG. 1 are designated by the same reference numerals as those shown in FIG. 1, and detailed description thereof will be omitted.

As shown in FIG. 2, the occupant protection system according to the embodiment includes a control device 1, a detection device 2, an occupant protection device 3, and an automatic driving device 101. The control device 1 is connected to the detection device 2, the occupant protection device 3, and the automatic operation device 101, and when a signal indicating that the automatic operation is started is input from the automatic operation device 101, the control device 1 is input from the detection device 2. Based on the information, the operation of the occupant protection device 3 is controlled.

The detection device 2 includes a collision sensor 21, a seat surface sensor 22, a backrest sensor 23, a foot sensor 24, and a three-dimensional sensor 25. The occupant protection device 3 includes a pretensioner 31, an airbag 32, a curtain airbag 33, a knee airbag 34, a side airbag 35, a center airbag 36, a slide lock 37, a rotation lock 38, and a reclining lock 39.

The control device 1 includes a control unit 11 and a storage unit 12. The storage unit 12 stores the occupant protection device control information 13. The storage unit 12 is, for example, a semiconductor memory element such as a RAM (Random Access Memory) or a flash memory, or a storage device such as an HDD (Hard Disk Drive) or an optical disk.

The control unit 11 includes, for example, a microcomputer having a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), an input / output port, and various circuits.

Then, the control unit 11 is realized, for example, by the CPU reading and executing the program stored in the ROM. The control unit 11 may be configured by hardware such as an ASIC (Application Specific Integrated Circuit) or an FPGA (Field Programmable Gate Array).

When the control unit 11 inputs a signal indicating that the automatic operation has started from the automatic driving device 101, whether or not the collision sensor 21 inputs a signal indicating that the collision of the own vehicle 100 has been detected. To judge.

Then, when the collision of the own vehicle 100 is detected, the control unit 11 collides based on the information input from the collision sensor 21, the seat surface sensor 22, the backrest sensor 23, the foot sensor 24, and the three-dimensional sensor 25. Determine the situation. The collision situation here includes the collision direction of the own vehicle 100, the rotation position of the front seats (driver's seat 41 and passenger's seat 42), the angle of the backrest, the physique of the occupant, the posture of the occupant, the line-of-sight direction of the occupant, and the like. ..

The control device 1 has the collision direction of the own vehicle 100 from the arrangement position of the collision sensor 21 in the own vehicle 100 that has input a signal indicating that the collision of the own vehicle 100 has been detected among the six collision sensors 21. To judge.

Further, the control device 1 has the state of the driver's seat 41, the state of the passenger's seat 42, the presence / absence of an occupant, the posture, and the state of the driver's seat 41 based on the detection results of the seat surface sensor 22, the backrest sensor 23, the foot sensor 24, and the three-dimensional sensor 25. Determine the condition inside the vehicle at the time of a collision, including body shape.

Then, the control unit 11 selects a device to be operated from a plurality of devices included in the occupant protection device 3 based on the determined collision situation and the occupant protection device control information 13 stored in the storage unit 12. Further, the control unit 11 adjusts and operates the operation mode of the occupant protection device 3 according to the physique and posture of the occupant. An example of operation control of the occupant protection device 3 by the control unit 11 will be described later with reference to FIGS. 4 to 10.

Next, an example of the occupant protection device control information 13 according to the embodiment will be described with reference to FIG. FIG. 3 is an explanatory diagram showing an example of the occupant protection device control information 13 according to the embodiment. As shown in FIG. 3, the occupant protection device control information 13 includes an identification number (here, 01 to 07) assigned to each of a plurality of types of collision situations, and each collision to which each identification number (01 to 07) is assigned. It is the information associated with the operation control for the occupant protection device 3 in the situation.

Here, the collision situation of the identification number 01 is a situation in which the front seats (driver's seat 41, passenger's seat 42) and the rear seats 43 face each other and collide from the front of the own vehicle 100. The collision situation of the identification number 02 is a state in which the seat surface of the front seats (driver's seat 41, passenger's seat 42) is rotated diagonally (for example, 45 degrees toward the outside of the own vehicle 100) with respect to the front of the own vehicle 100. , It is a situation where the vehicle collides from the front of the own vehicle 100.

The collision situation of the identification number 03 is a situation in which the front seats (driver's seat 41, passenger's seat 42) collide from the rear of the own vehicle 100 with the front seats (driver's seat 41, passenger's seat 42) facing the center of the vehicle interior. The collision situation of the identification number 04 is a situation in which the occupants of the front seats (driver's seat 41, passenger's seat 42) collide from the front of the own vehicle 100 in a forward leaning posture.

The collision situation of the identification number 05 is a situation in which the occupants in the front seats (driver's seat 41, passenger's seat 42) collide from the front of the own vehicle 100 when the occupants are smaller than the standard adult physique. The collision situation of the identification number 06 is a situation in which the backrests of the front seats (driver's seat 41, passenger's seat 42) collide from the front of the own vehicle 100 with the backrest tilted until it becomes fully flat.

The collision situation of the identification number 07 is a situation in which the occupants in the front seats (driver's seat 41, passenger's seat 42) collide from the front of the own vehicle 100 while looking away. Note that FIG. 3 shows a part of the occupant protection device control information 13, and the occupant protection device control information 13 includes more than seven types of collision situations and the occupant protection device 3 in each collision situation. Contains information associated with motion control for.

Further, ◯ shown in FIG. 3 means that the operation control for the occupant protection device 3 is activated. On the other hand, x shown in FIG. 3 means that the operation control for the occupant protection device 3 is not activated. The operation control described as ◯ (adjustment) in FIG. 3 indicates a control in which the occupant protection device 3 is not simply operated but is operated while adjusting the operation mode. The adjustment of the operation mode will be described later with reference to FIGS. 7 and 8.

Returning to FIG. 3, the control unit 11 determines the collision situation at the time of the collision of the own vehicle 100, and identifies the identification number assigned to the determined collision situation. Then, the control unit 11 refers to the occupant protection device control information 13, and selectively operates the occupant protection device 3 to which the identified identification number is associated with and is marked with a circle.

Further, when the own vehicle 100 collides, the control unit 11 operates all of the occupant protection device 3, the pretensioner 31, the slide lock 37, the rotation lock 38, and the reclining lock 39, regardless of the collision situation. As a result, the control unit 11 can prevent the occupant from being injured due to sliding of the front seats (driver's seat 41, passenger's seat 42) in the front-rear direction, rotation of the seat surface, and tilting of the backrest in the event of a collision. can.

Next, an example of operation control of the occupant protection device 3 by the control unit 11 according to the embodiment will be described with reference to FIGS. 4 to 10. 4 to 10 are explanatory views showing an example of operation control of the occupant protection device 3 by the control unit 11 according to the embodiment.

Note that FIG. 4 shows a collision situation with an identification number of 01, FIG. 5 shows a collision situation with an identification number of 02, and FIG. 6 shows a collision situation with an identification number of 03. FIG. 7 shows a collision situation in which the identification number is 04.

Further, FIG. 8 shows a collision situation with an identification number of 05, FIG. 9 shows a collision situation with an identification number of 06, and FIG. 10 shows a collision situation with an identification number of 07. ing. Further, in FIGS. 4 to 10, other than FIGS. 7 and 8, the occupants are not shown in order to facilitate understanding of the seat condition, but it is assumed that the occupants are seated in all the seats. ..

As shown in FIG. 4, the collision situation in which the identification number is 01 is a situation in which the driver's seat 41, the passenger's seat 42, and the rear seat 43 face each other and collide from the front of the own vehicle 100. In such a situation, the occupants of the driver's seat 41 and the passenger's seat 42 do not need to operate the airbag 32 and the knee airbag 34 because the back of the head is protected by the headrest and the back surface is protected by the backrest.

Further, in the situation shown in FIG. 4, since the collision is not from the side, it is not necessary to operate the curtain airbag 33 and the side airbag 35. However, since there is a possibility of collision between the occupants of the driver's seat 41 and the passenger's seat 42 and the occupants of the rear seat 43, it is necessary to operate the center airbag 36.

Therefore, in the situation shown in FIG. 4, the control unit 11 deactivates the airbag 32, the curtain airbag 33, the knee airbag 34, and the side airbag 35. Then, the control unit 11 operates the center airbag 36, the pretensioner 31, the slide lock 37, the rotation lock 38, and the reclining lock 39.

As a result, the control unit 11 can make the center airbag 36 exert the occupant protection function according to the relative orientations of the driver's seat 41 and the passenger's seat 42 and the rear seat 43. Moreover, the control unit 11 can prevent the airbag 32, the curtain airbag 33, the knee airbag 34, and the side airbag 35, which cannot be restarted once operated, from being operated unnecessarily.

Further, as shown in FIG. 5, in the collision situation where the identification number is 02, the seat surfaces of the driver's seat 41 and the passenger's seat 42 are rotated at an angle of 45 degrees with respect to the front of the own vehicle 100 (outside the own vehicle 100). It is a situation where the vehicle collides from the front of the own vehicle 100 (in the state of facing).

In such a situation, it is not necessary to operate the center airbag 36 because the possibility of collision between the occupants of the driver's seat 41 and the passenger's seat 42 and the occupants of the rear seat 43 is low. Further, in the situation shown in FIG. 5, the airbag 32 and the knee airbag 34 are not located in front of the occupants of the driver's seat 41 and the passenger's seat 42, and it is difficult to exert the occupant's protection function even if they operate. , No operation is required.

Further, in the situation shown in FIG. 5, the occupants of the driver's seat 41 and the passenger's seat 42 may collide with the side surface of the own vehicle 100 due to the rotation of the seat surface. Therefore, the curtain airbag 33 and the side airbag 35 need to be operated.

Therefore, the control unit 11 deactivates the airbag 32, the knee airbag 34, and the center airbag 36. Then, the control unit 11 operates the pretensioner 31, the curtain airbag 33, the side airbag 35, the slide lock 37, the rotation lock 38, and the reclining lock 39.

As a result, the control unit 11 can make the curtain airbag 33 and the side airbag 35 exert the occupant protection function according to the rotation positions of the driver's seat 41 and the passenger's seat 42. Moreover, the control unit 11 can prevent the airbag 32, the knee airbag 34, and the center airbag 36, which cannot be restarted once operated, from being operated unnecessarily.

Note that FIG. 5 shows a state in which the seat surfaces of the driver's seat 41 and the passenger's seat 42 are rotated toward the outside of the own vehicle 100. On the other hand, when the seat surfaces of the driver's seat 41 and the passenger's seat 42 are rotated toward the inside of the own vehicle 100, the occupants of the driver's seat 41 and the passenger's seat 42 can collide with the side surface of the own vehicle 100. The sex is low. Therefore, in this state, the operation of the curtain airbag 33 and the side airbag 35 may not be necessary.

Further, as shown in FIG. 6, the collision situation in which the identification number is 03 is a situation in which the driver's seat 41 and the passenger's seat 42 collide from the rear of the own vehicle 100 with the driver's seat 41 and the passenger's seat 42 facing the center of the vehicle interior. In such a situation, the occupants of the driver's seat 41 and the passenger's seat 42 do not need to operate the airbag 32 and the knee airbag 34 because the back of the head is protected by the headrest and the back surface is protected by the backrest.

Further, since the occupants of the driver's seat 41 and the passenger's seat 42 are unlikely to collide with the side surface of the own vehicle 100, it is not necessary to operate the curtain airbag 33 and the side airbag 35. However, since there is a possibility of collision between the occupants of the driver's seat 41 and the passenger's seat 42 and the occupants of the rear seat 43, it is necessary to operate the center airbag 36.

Therefore, the control unit 11 deactivates the airbag 32, the curtain airbag 33, the knee airbag 34, and the side airbag 35. Then, the control unit 11 operates the pretensioner 31, the center airbag 36, the slide lock 37, the rotation lock 38, and the reclining lock 39.

As a result, the control unit 11 can make the center airbag 36 exert the occupant protection function according to the rotation positions of the driver's seat 41 and the passenger's seat 42. Moreover, the control unit 11 can prevent the airbag 32, the curtain airbag 33, the knee airbag 34, and the side airbag 35, which cannot be restarted once operated, from being unnecessarily operated.

Further, as shown in FIG. 7, the collision situation of the identification number 04 is, for example, a situation in which the occupant 51 of the driver's seat 41 collides from the front of the own vehicle 100 in a forward leaning posture. In such a situation, the driver's seat 41 faces the front of the own vehicle 100. And the collision direction is not from the side. Therefore, it is not necessary to operate the curtain airbag 33, the side airbag 35, and the center airbag 36.

Therefore, the control unit 11 deactivates the curtain airbag 33, the side airbag 35, and the center airbag 36. Then, the control unit 11 operates the pretensioner 31, the airbag 32, the knee airbag 34, the slide lock 37, the rotation lock 38, and the reclining lock 39.

However, in the situation shown on the left side of FIG. 7, since the occupant 51 is in a forward leaning posture, the airbag 32 may apply more pressure than necessary to the face of the occupant 51 if the bag body expands instantaneously. .. Although not shown here, the knee airbag 34 may also apply more pressure than necessary to the occupant 51.

Further, in the situation shown on the left side of FIG. 7, in the pretensioner 31, since the occupant 51 is in the forward leaning posture, the seatbelt 6 is in the stretched state, and the seatbelt is in the stretched state as compared with the case where the occupant 51 is not in the forward leaning posture. It takes time to wind 6 to an appropriate length.

Therefore, the control unit 11 adjusts to lower the deployment speed (expansion speed of the bag body) of the airbag 32 as compared with the case where the occupant 51 is not in the forward leaning posture, and the airbag 32 is in the state shown in the left figure of FIG. Transition to the state shown on the right.

Further, the control unit 11 also adjusts the knee airbag 34 to reduce the deployment speed (expansion speed of the bag body) in the same manner. As a result, the control unit 11 can prevent the occupant 51 from being subjected to excessive pressure from the airbag 32 and the knee airbag 34.

Further, the control unit 11 makes adjustments to increase the winding speed of the seatbelt 6 by the pretensioner 31 as compared with the case where the occupant 51 is not in the forward leaning posture. The control unit 11 adjusts to increase the winding speed of the seat belt 6 by the pretensioner 31 in the event of a collision of the own vehicle 100 even when the occupant of the rear seat 43 is in the forward leaning posture. As a result, the control unit 11 can wind the seatbelt 6 to an appropriate length when the own vehicle 100 collides, even when the occupant 51 is in a forward leaning posture.

Further, as shown in FIG. 8, in the collision situation of the identification number 05, for example, when the occupant 52 of the driver's seat 41 is smaller than the standard adult physique, the collision occurs from the front of the own vehicle 100. The situation.

In such a situation, the driver's seat 41 faces the front of the own vehicle 100. And the collision direction is not from the side. Therefore, it is not necessary to operate the curtain airbag 33, the side airbag 35, and the center airbag 36.

Therefore, the control unit 11 deactivates the curtain airbag 33, the side airbag 35, and the center airbag 36. Then, the control unit 11 operates the pretensioner 31, the airbag 32, the knee airbag 34, the slide lock 37, the rotation lock 38, and the reclining lock 39.

However, in the situation shown in FIG. 8, when the airbag 32 is inflated in a position suitable for protecting an occupant having a standard adult physique in the driver's seat 41 (see the dotted line shown in FIG. 8). It may not be possible to properly protect the relatively small occupant 52.

Also, in the situation shown in FIG. 8, since the occupant 52 is smaller than the occupant having a standard adult physique, the pressure to jump forward in the event of a collision is smaller than that of the occupant having a standard adult physique. For this reason, the pretensioner 31 preferably applies an excessive load to the small occupant 51 when the seatbelt 6 is wound at the same winding speed as when the occupant has a standard adult physique. not.

Therefore, the control unit 11 has a deployment position suitable for an occupant having a standard adult physique (dotted line shown in FIG. 8) in accordance with the small occupant 52, as in the airbag 32 shown by the solid line in FIG. Make adjustments to make it lower than (see).

The control unit 11 also adjusts the knee airbag 34 to be lower than the position suitable for a occupant having a standard adult physique. As a result, the control unit 11 can make the airbag 32 and the knee airbag 34 exert the occupant protection function.

Further, the control unit 11 adjusts the winding speed of the seatbelt 6 by the pretensioner 31 to be lower than that of an occupant having a standard adult physique. The control unit 11 adjusts to reduce the winding speed of the seatbelt 6 by the pretensioner 31 in the event of a collision of the own vehicle 100 even when the occupant of the rear seat 43 is small. As a result, the control unit 11 can exert the occupant protection function by the pretensioner 31.

Further, as shown in FIG. 9, the collision situation of the identification number 06 is a situation in which the backrests of the driver's seat 41 and the passenger's seat 42 are tilted until they are fully flat and collide from the front of the own vehicle 100. .. In such a situation, the control unit 11 can prevent the occupant from jumping forward by operating the pretensioner 31 without operating the airbag 32, the knee airbag 34, and the center airbag 36. can. However, in the situation shown in FIG. 9, there is a possibility of being shaken laterally at the time of a collision.

Therefore, the control unit 11 deactivates the airbag 32, the knee airbag 34, and the center airbag 36. Then, the control unit 11 operates the pretensioner 31, the curtain airbag 33, the side airbag 35, the slide lock 37, the rotation lock 38, and the reclining lock 39.

As a result, the control unit 11 attaches the occupant to the pretensioner 31, the curtain airbag 33, and the side airbag 35 according to the state in which the backrests of the driver's seat 41 and the passenger's seat 42 are tilted until they are fully flat. It can exert a protective function. Moreover, the control unit 11 can prevent the airbag 32 and the knee airbag 34, which cannot be restarted once operated, from being operated unnecessarily.

Further, the collision situation of the identification number 07 is, for example, a situation in which the occupant of the driver's seat 41 or the passenger's seat 42 collides from the front of the own vehicle 100 while looking away. In such a situation, the airbag 32 is not located in front of the occupant's face of the driver's seat 41 and the passenger's seat 42, and even if it is activated, it is difficult to exert the occupant's protection function, so that the operation is unnecessary. ..

However, as shown in FIG. 10, the orientation of the driver's seat 41 and the passenger's seat 42 and the angle of the backrest are set in a state where the occupant protection device 3 other than the airbag 32 can exert the occupant protection function (default state). be.

Therefore, the control unit 11 deactivates the airbag 32. Then, the control unit 11 operates the pretensioner 31, the curtain airbag 33, the knee airbag 34, the side airbag 35, the center airbag 36, the slide lock 37, the rotation lock 38, and the reclining lock 39.

As a result, the control unit 11 can make the occupant protection device 3 other than the airbag 32 exert the occupant protection function according to the state in which the occupant of the driver's seat 41 or the passenger's seat 42 is looking away. Moreover, the control unit 11 can prevent the airbag 32, which cannot be restarted once it is operated, from being unnecessarily operated.

Next, with reference to FIG. 11, a process executed by the control unit 11 according to the embodiment will be described. FIG. 11 is a flowchart showing a process executed by the control unit 11 according to the embodiment. When the power is turned on to the own vehicle 100, the control unit 11 repeatedly executes the process shown in FIG. 11 at a predetermined cycle.

Specifically, when the power is turned on to the own vehicle 100, the control unit 11 first determines whether or not the own vehicle 100 has collided, as shown in FIG. 11 (step S101). Then, when it is determined that the own vehicle 100 does not collide (step S101, No), the control unit 11 ends the process. After that, the control unit 11 starts the process from step S101 after a predetermined time (for example, several msec) has elapsed.

On the other hand, when it is determined that the own vehicle 100 has collided (step S101, Yes), the control unit 11 determines the collision direction (step S102). Subsequently, the control unit 11 determines the rotation position of the seat and the tilt angle of the backrest (step S103), and determines the physique, posture, and line-of-sight direction of the occupant (step S104).

Then, the control unit 11 selects the occupant protection device 3 to be operated based on the determination results of steps S102, S103, and S104 and the occupant protection device control information 13 (step S105). Further, the control unit 11 adjusts the operation mode of the occupant protection device 3 according to the physique and posture of the occupant (step S106). After that, the control unit 11 activates the occupant protection device 3 (step S107) to end the process.

As described above, the control device of the occupant protection device according to the embodiment includes a control unit that controls the operation of the occupant protection device according to the rotation position of the seat in the vehicle interior when an impact is applied to the own vehicle. Be prepared. As a result, the control device of the occupant protection device can make the occupant protection device exert the occupant protection function.

Further, a plurality of occupant protection devices according to the embodiment are provided in the own vehicle. Then, the control unit of the control device according to the embodiment selects the occupant protection device to be operated from the plurality of occupant protection devices according to the rotation position of the seat. As a result, the control device of the occupant protection device can make the occupant protection device exert the occupant protection function even when the occupant rotates the seat and takes a free posture, for example.

Further, the control unit of the control device selects a occupant protection device to be operated from a plurality of occupant protection devices according to the relative orientation of the seats in the vehicle interior. As a result, the control device of the occupant protection device can make the occupant protection device exert the occupant protection function even when the seats face each other, for example.

Further, the control unit of the control device according to the embodiment selects an occupant protection device to be operated from a plurality of occupant protection devices according to the tilt angle of the backrest of the seat. As a result, the control device of the occupant protection device can make the occupant protection device exert the occupant protection function even when the backrest of the seat is tilted and takes a free posture, for example.

Further, the control unit of the control device according to the embodiment selects a occupant protection device to be operated from a plurality of occupant protection devices according to the line-of-sight direction of the occupant of the seat. As a result, the control device of the occupant protection device can make the occupant protection device exert the occupant protection function even when the occupant is looking away, for example.

Further, the control unit of the control device according to the embodiment adjusts the operation mode of the occupant protection device according to the posture of the occupant of the seat. As a result, the control device of the occupant protection device can make the occupant protection device exert the occupant protection function according to the posture of the occupant.

Further, the control unit of the control device according to the embodiment adjusts the operation mode of the occupant protection device according to the physique of the occupant of the seat. As a result, the control device of the occupant protection device can make the occupant protection device exert the occupant protection function according to the physique of the occupant.

Further effects and variations can be easily derived by those skilled in the art. For this reason, the broader aspects of the invention are not limited to the particular details and representative embodiments described and described above. Thus, various modifications can be made without departing from the spirit or scope of the overall concept of the invention as defined by the appended claims and their equivalents.

1 Control device 2 Detection device 3 Crew protection device 6 Seat belt 11 Control unit 12 Storage unit 13 Crew protection device Control information 21 Collision sensor 22 Seat sensor 23 Backrest sensor 24 Foot sensor 25 Three-dimensional sensor 31 Pretensioner 32 Airbag 33 Curtain Airbag 34 Knee airbag 35 Side airbag 36 Center airbag 37 Slide lock 38 Rotation lock 39 Reclining lock 41 Driver's seat 42 Passenger's seat 43 Rear seat 51, 52 Crew 100 Own vehicle 101 Automatic driving device

Claims (6)

When an impact is applied to an own vehicle having a seat in which the front seat is rotatably configured so that the front seat and the rear seat face each other, an airbag provided in front of the front seat in the passenger compartment and the above-mentioned A control unit that controls the operation of a plurality of occupant protection devices including at least a center airbag provided between the front seat and the rear seat and a pretensioner for winding the seat belt is provided.
The control unit
The occupant protection device to be operated from the plurality of occupant protection devices is selected according to the tilt angle of the backrest of the seat, and the front seat and the rear seat are directed in the forward direction of the own vehicle , and the front seat When an impact from the front of the own vehicle is applied in a state where the backrest is tilted until it becomes fully flat, the pretensioner is operated without deploying the airbag and the center airbag to operate the front seat and the front seat. A control device for an occupant protection device, which deploys the center airbag without deploying the airbag when an impact is applied to the own vehicle in a state where the rear seats face each other. When an impact is applied to an own vehicle having a seat in which the front seat is rotatably configured so that the front seat and the rear seat face each other, an airbag provided in front of the front seat in the passenger compartment and the above-mentioned A control unit that controls operation for a plurality of occupant protection devices including at least a center airbag provided between the front seat and the rear seat is provided.
The control unit
The occupant protection device to be operated from the plurality of occupant protection devices is selected according to the line-of-sight direction of the occupant of the seat, and the front seat and the rear seat are oriented in the forward direction of the own vehicle. When an impact is applied to the vehicle, the airbag is deployed without deploying the center airbag, and when the impact is applied to the own vehicle while the front seat and the rear seat are facing each other, the airbag is installed. A control device for an occupant protection device, characterized in that the center airbag is deployed without being deployed. An airbag provided in the own vehicle having a seat in which the front seat is rotatably configured so that the front seat and the rear seat face each other and provided in front of the front seat in the passenger compartment, and the front seat. A plurality of occupant protection devices including at least a center airbag provided between the rear seats and a pretensioner for winding the seat belt .
When an impact is applied to the own vehicle, the occupant protection device to be operated from the plurality of occupant protection devices is selected according to the tilt angle of the backrest of the seat, and the front seat and the rear seat are the own vehicle. When an impact from the front of the own vehicle is applied in a state of being directed in the forward direction and tilted until the backrest of the front seat is fully flat, the airbag and the center airbag are not deployed. An occupant protection device including a control unit that activates a pretensioner to deploy the center airbag without deploying the airbag when an impact is applied to the own vehicle in a state where the front seat and the rear seat face each other. An occupant protection system characterized by including a control device. An airbag provided in the own vehicle having a seat in which the front seat is rotatably configured so that the front seat and the rear seat face each other and provided in front of the front seat in the passenger compartment, and the front seat. A plurality of occupant protection devices including at least a center airbag provided between the rear seats and the rear seats.
When an impact is applied to the own vehicle, the occupant protection device to be operated from the plurality of occupant protection devices is selected according to the line-of-sight direction of the occupant of the seat, and the front seat and the rear seat of the own vehicle are selected. When an impact is applied to the own vehicle in a state of being directed in the forward direction, the airbag is deployed without deploying the center airbag, and the own vehicle is in a state where the front seat and the rear seat face each other. An occupant protection system comprising: a control device of an occupant protection device including a control unit for deploying the center airbag without deploying the airbag when an impact is applied. When an impact is applied to an own vehicle having a seat in which the front seat is rotatably configured so that the front seat and the rear seat face each other, an airbag provided in front of the front seat in the passenger compartment and the above-mentioned The control unit of the control device that controls the operation of a plurality of occupant protection devices including at least a center airbag provided between the front seat and the rear seat and a pretensioner for winding the seat belt .
When an impact is applied to the own vehicle, the occupant protection device to be operated from the plurality of occupant protection devices is selected according to the tilt angle of the backrest of the seat.
The airbag is applied when an impact from the front of the own vehicle is applied in a state where the front seat and the rear seat are directed in the forward direction of the own vehicle and the backrest of the front seat is tilted until it becomes fully flat. Activating the pretensioner without deploying the bag and the center airbag,
A occupant protection device comprising: deploying the center airbag without deploying the airbag when an impact is applied to the own vehicle in a state where the front seat and the rear seat face each other. Control method. When an impact is applied to an own vehicle having a seat in which the front seat is rotatably configured so that the front seat and the rear seat face each other, an airbag provided in front of the front seat in the passenger compartment and the above-mentioned The control unit of the control device that controls the operation of a plurality of occupant protection devices including at least the center airbag provided between the front seat and the rear seat is
When an impact is applied to the own vehicle, the occupant protection device to be operated from the plurality of occupant protection devices is selected according to the line-of-sight direction of the occupant of the seat.
When an impact is applied to the own vehicle while the front seat and the rear seat are directed in the forward direction of the own vehicle, the airbag is deployed without deploying the center airbag.
A occupant protection device comprising: deploying the center airbag without deploying the airbag when an impact is applied to the own vehicle in a state where the front seat and the rear seat face each other. Control method.

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