JP2009096372A - Controller for passive safety device and passive safety device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a controller for a passive safety device and a passive safety device, capable of appropriately protecting an occupant when a multiple collision occurs. <P>SOLUTION: This controller 70 for a passive safety device, which is a controller used for the passive safety device 10, is provided with a control portion 100 for controlling the operation of a seat belt pretensioner 50 and an occupant protection portion 60 for a side collision. The control portion makes a side collision determination of whether a side collision occurs or not based on signals from a plurality of side portion shock detection portions 30. Further, the control portion controls the operation of the occupant protection portion for a side collision based on the determination result of the side collision determination. After the seat belt pretensioner is operated, the control portion inhibits the side collision determination based on the signals from the side portion shock detection portions on the side where shock associated with the operation of the seat belt pretensioner is detected among the plurality of side portion shock detection portions. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an occupant protection device control device and an occupant protection device used in a vehicle.

  Conventionally, a front-impact airbag for protecting an occupant during a collision from the front of the vehicle (hereinafter referred to as a front collision) and an occupant during a collision from the side of the vehicle (hereinafter referred to as a side collision). There is known an occupant protection device including a side airbag for protecting the vehicle. In recent years, an occupant protection device that further includes a seat belt pretensioner that operates during a front collision has been developed in order to protect the occupant in cooperation with the front collision airbag.

  In an occupant protection device that includes a seat belt pretensioner, the seat belt pretensioner is generally disposed in each pillar portion of the vehicle. Further, the impact sensor for the side airbag is generally disposed in each pillar portion of the vehicle. In this case, if the side airbag impact sensor detects an impact when the seat belt pretensioner is activated, the side airbag may be activated.

  In order to suppress the operation of the side airbag associated with the operation of the seat belt pretensioner, the conventional control device for the occupant protection device is configured so that when the seat belt pretensioner is operated, The control which prohibits the action | operation of a side airbag was performed.

  In Patent Document 1, in an occupant protection device including a front-impact airbag and a side airbag, only a side airbag at a necessary position is operated according to a side-impact direction, and a side airbag at an unnecessary position is detected. A technology related to an occupant protection device that prohibits operation is disclosed.

JP-A-6-55996

  When the operation of all side airbags arranged in the vehicle is prohibited when the seat belt pretensioner is activated, for example, the side collision occurs at the same time as the front collision occurs or after the front collision occurs. It is difficult to activate the side airbag at the time of multiple collisions such as in the case of the case. In this case, it becomes difficult to properly protect the occupant during multiple collisions.

  An object of the present invention is to provide an occupant protection device control device and an occupant protection device that can appropriately protect an occupant during multiple collisions.

  A control device for an occupant protection device according to the present invention includes a plurality of side impact detection units for detecting an impact generated on a side portion of a vehicle, a seat belt pretensioner disposed on the side portion of the vehicle, and a side collision. A side collision occupant protection unit that protects the passenger at the time, and a control device used in an occupant protection device comprising a control unit that controls the operation of the seat belt pretensioner and the side collision occupant protection unit, The control unit determines whether or not a side collision has occurred based on signals from a plurality of side impact detection units, and controls the operation of the side collision occupant protection unit based on the determination result of the side collision determination. After the seat belt pretensioner is activated, the side collision determination based on the signal from the side impact detection unit that detects the impact associated with the operation of the seat belt pretensioner among the plurality of side impact detection units is prohibited. It is characterized by .

  According to the control device for an occupant protection device according to the present invention, after the seat belt pretensioner is operated, the control unit detects the impact associated with the operation of the seat belt pretensioner among the plurality of side impact detection units. Side impact determination based on a signal from the impact detection unit is prohibited. As a result, it is possible to suppress the operation of the side collision occupant protection unit due to the operation of the seat belt pretensioner and to detect the impact associated with the operation of the seat belt pretensioner among the plurality of side impact detection units. The side collision occupant protection unit can be operated based on the determination result of the side collision determination based on the signal from the side impact detection unit that has not been performed. As a result, an occupant can be properly protected during multiple collisions.

  A control device for an occupant protection device according to the present invention includes a plurality of side impact detection units for detecting an impact generated on a side portion of a vehicle, a seat belt pretensioner disposed on the side portion of the vehicle, and a side collision. A control device used in an occupant protection device including a side collision occupant protection unit that protects an occupant at the time, the control unit controlling the operation of the seat belt pretensioner and the side collision occupant protection unit, and a seat A storage unit that stores a signal related to an impact associated with the operation of the belt pretensioner, and the control unit has a predetermined magnitude of a signal from at least some of the side impact detection units. After the side impact occupant protection unit is activated and the seat belt pretensioner is activated, it is determined that the seat belt pretensioner has a plurality of side impact detection units. Operation After removing the signal stored in the storage unit from the signal from the side impact detection unit that detected the accompanying impact, the magnitude of the signal from the side impact detection unit that detected the impact associated with the operation of the seat belt pretensioner is It is characterized by determining whether it is higher than a predetermined value.

  According to the control device for an occupant protection device according to the present invention, after the seat belt pretensioner is operated, the control unit is based on a signal from the side impact detection unit that detects an impact caused by the operation of the seat belt pretensioner. Eliminates the impact signal associated with seat belt pretensioner operation. Thereby, the control part can acquire the signal corresponding to the impact at the time of a side collision. As a result, the control unit can suppress the operation of the side collision occupant protection unit due to the operation of the seat belt pretensioner, and the magnitude of the signal corresponding to the impact at the time of the side collision is a predetermined value. If larger than this, the side collision occupant protection unit can be activated. Thereby, the passenger | crew at the time of a multiple collision can be protected appropriately.

  In the above configuration, after prohibiting the side collision determination, the control unit further performs the side collision determination based on a signal from the side impact detection unit that detects an impact caused by the operation of the seat belt pretensioner. You may substitute by the side collision determination based on the signal from the side impact detection part except the side part impact detection part which detected the impact accompanying the action | operation of a seatbelt pretensioner among impact detection parts. According to this configuration, the side collision occupant protection unit that operates based on a signal from the side impact detection unit that detects an impact associated with the operation of the seat belt pretensioner is generated by the impact generated by the operation of the seat belt pretensioner. It can be operated by the determination result of the side collision determination based on the signal from the side impact detection unit that has not detected the. Thereby, the passenger | crew at the time of a multiple collision can be protected appropriately.

  In the above-described configuration, the plurality of side impact detection units are opposed to the side impact detection unit disposed on one side with the center line of the vehicle interposed therebetween, and the side facing the center line of the side impact detection unit. A side impact detection unit disposed on the side of the side impact detection unit, and after the control unit prohibits the side collision determination, the side impact detection unit further detects an impact associated with the operation of the seat belt pretensioner. And a signal from a side impact detector disposed on a side opposite to the center line of the side impact detector that detects an impact associated with the operation of the seat belt pretensioner. It may be determined whether or not a side collision has occurred, and the prohibition of the side collision determination may be canceled based on the determination result. According to this configuration, for example, after prohibiting the side collision determination, the control unit detects the magnitude of the signal from the side impact detection unit that detects the impact associated with the operation of the seat belt pretensioner, and the seat belt pretensioner. The difference between the magnitude of the signal from the side impact detector located on the opposite side across the center line of the side impact detector that detected the impact associated with the operation is the operation of the seat belt pretensioner If the accompanying impact is greater than the difference between the two, it is determined that a side collision has occurred, and if it is determined that a side collision has occurred, the prohibition of side collision determination can be lifted. Thereby, the passenger | crew at the time of a multiple collision can be protected appropriately.

  A control device for an occupant protection device according to the present invention includes a plurality of side impact detection units for detecting an impact generated on a side portion of a vehicle, a seat belt pretensioner disposed on the side portion of the vehicle, and a side collision. A side collision occupant protection unit that protects the passenger at the time, and a control device used in an occupant protection device comprising a control unit that controls the operation of the seat belt pretensioner and the side collision occupant protection unit, The control unit determines that a side collision has occurred when the magnitude of a signal from at least some of the plurality of side impact detection units is higher than a predetermined value, and the side collision occupant protection unit After the seatbelt pretensioner is actuated, the predetermined value is changed to a value higher than the value before the seatbelt pretensioner is actuated.

  According to the control device for an occupant protection device according to the present invention, after the seat belt pretensioner is activated, the control unit changes the predetermined value to a value higher than the value before the seat belt pretensioner is activated. To do. As a result, it is possible to suppress the operation of the side collision occupant protection unit due to the operation of the seat belt pretensioner, and there was a large impact from the side of the vehicle exceeding the impact associated with the operation of the seat belt pretensioner. In this case, the side collision occupant protection unit can be activated. Thereby, the passenger | crew at the time of a multiple collision can be protected appropriately.

  An occupant protection device according to the present invention includes a plurality of side impact detection units for detecting an impact generated on a side portion of a vehicle, a seat belt pretensioner disposed on the side portion of the vehicle, and an occupant in a side collision. And a control device for controlling the operation of the seat belt pretensioner and the side collision occupant protection unit, wherein the control device is any one of claims 1 to 5. It is a control apparatus as described in above. The occupant protection device according to the present invention includes the control device according to any one of claims 1 to 5. Thereby, the passenger | crew at the time of a multiple collision can be protected appropriately.

  According to the present invention, it is possible to provide an occupant protection device control device and an occupant protection device that can appropriately protect an occupant during multiple collisions.

  Hereinafter, the best mode for carrying out the present invention will be described.

  An occupant protection device control device 70 (hereinafter referred to as a control device 70) according to Embodiment 1 of the present invention will be described. FIG. 1 is a block diagram schematically showing an overall configuration of a vehicle 200 in which a control device 70 according to Embodiment 1 of the present invention is incorporated. As shown in FIG. 1, the vehicle 200 includes a right front seat 2, a left front seat 4, a right rear seat 6, a left rear seat 8, and an occupant protection device 10. In the present embodiment, the right front seat 2 corresponds to the driver's seat.

  The occupant protection device 10 includes a plurality of front collision impact detection units 20 for detecting an impact at the time of a front collision of the vehicle 200, and a plurality of side impact detection units for detecting an impact generated on a side portion of the vehicle 200. 30, a front-impact airbag 40 that protects an occupant during a front impact, a seat belt pretensioner 50, a side impact occupant protection unit 60 that protects an occupant during a side impact, a seat belt pre-tensioner 50, and a side impact And a control device 70 that controls the operation of the passenger occupant protection unit 60.

  The right front sensor 22, the left front sensor 24, and the floor X-axis sensor 26 correspond to the front impact detection unit 20, respectively. The right front sensor 22 is disposed on the right front portion of the vehicle 200. The left front sensor 24 is disposed on the left front portion of the vehicle 200. The floor X-axis sensor 26 is disposed on the floor portion of the vehicle 200. As the right front sensor 22, the left front sensor 24, and the floor X-axis sensor 26, known acceleration sensors can be used, respectively. In this case, the front collision impact detection unit 20 detects the longitudinal acceleration of the vehicle 200 at the time of the front collision, and transmits the detection result to the control device 70.

  The signals from the right front sensor 22 and the left front sensor 24 are A / D converted by the control device 70, offset corrected, noise is removed, and the acceleration is calculated. Further, the signal from the floor X-axis sensor 26 is A / D converted, offset corrected, noise is removed, integrated, and calculated by the control device 70.

  The right front seat B pillar sensor 32, the left front seat B pillar sensor 33, the right rear seat C pillar sensor 35, the left rear seat C pillar sensor 36, and the floor Y-axis sensor 38 correspond to the side impact detection unit 30, respectively. The right front seat B pillar sensor 32 is disposed on the window side surface (right front seat B pillar portion) of the right front seat 2 of the vehicle 200. The left front seat B pillar sensor 33 is disposed on the window side surface (left front seat B pillar portion) of the left front seat 4 of the vehicle 200. The right rear seat C pillar sensor 35 is disposed on the window side surface (right rear seat C pillar portion) of the right rear seat 6 of the vehicle 200. The left rear seat C pillar sensor 36 is disposed on the window side surface (left rear seat C pillar portion) of the left rear seat 8 of the vehicle 200. Floor Y-axis sensor 38 is disposed on the floor portion of vehicle 200. As the right front seat B pillar sensor 32, the left front seat B pillar sensor 33, the right rear seat C pillar sensor 35, the left rear seat C pillar sensor 36, and the floor Y-axis sensor 38, known acceleration sensors can be used. In this case, the side impact detection unit 30 detects lateral acceleration when an impact is applied to the side of the vehicle 200 and transmits the detection result to the control device 70.

  Signals from the right front seat B pillar sensor 32, the left front seat B pillar sensor 33, the right rear seat C pillar sensor 35, and the left rear seat C pillar sensor 36 are A / D converted and offset corrected by the control device 70. The noise is removed and the acceleration is calculated. The signal from the floor Y-axis sensor 38 is A / D converted, offset corrected, noise is removed, integrated, and calculated by the control device 70.

  The right front airbag 42 and the left front airbag 44 correspond to the front airbag 40, respectively. The right front airbag 42 is disposed in front of the right front seat 2 of the vehicle 200. The left front airbag 44 is disposed in front of the left front seat 4 of the vehicle 200.

  The front collision airbag 40 is actuated by an instruction from the control device 70 based on signals from the right front sensor 22, the left front sensor 24, and the floor X-axis sensor 26. As the front-impact airbag 40, a well-known inflator airbag can be used. For example, the front-impact airbag 40 is filled with an igniter called squeeze, an igniter (powder) ignited by the igniter, and a gas generating agent (for example, a nitrogen gas generating agent) burned by the igniting agent. An inflator and a bag for enclosing gas generated from the gas generating agent. In the front-impact airbag 40, a squeeze ignites the igniting agent according to a signal from the control device 70, and nitrogen gas is generated by burning the gas generating agent. Then, the bag is developed with the generated nitrogen gas. The unfolded bag receives the occupant after it is inflated. Thereby, it is suppressed that the passenger | crew at the time of a front collision collides with the inside of the vehicle 200. FIG.

  The right front seat belt pretensioner 52, the left front seat belt pretensioner 54, the right rear seat belt pretensioner 56, and the left rear seat belt pretensioner 58 correspond to the seat belt pretensioner 50, respectively. The seat belt pretensioner 50 is disposed on each side of the vehicle 200. Specifically, the right front seat belt pretensioner 52 is disposed in the right front seat B pillar portion. The left front seat belt pretensioner 54 is disposed in the left front seat B pillar portion. The right rear seat belt pretensioner 56 is disposed in the right rear seat C pillar portion. The left rear seat belt pretensioner 58 is disposed in the left rear seat C pillar portion.

  The seat belt pretensioner 50 is operated by an instruction from the control device 70 based on signals from the right front sensor 22, the left front sensor 24, and the floor X-axis sensor 26. As the seat belt pretensioner 50, a well-known inflator type seat belt pretensioner can be used. For example, the seat belt pretensioner 50 includes an ignition unit called a squeeze, an igniting agent (explosive) ignited by the igniting unit, and a gas generating agent (for example, a nitrogen gas generating agent) burned by the igniting agent. An inflator and a winding unit for winding the seat belt using the pressure of the gas generated from the gas generating agent as power. In the seat belt pretensioner 50, the squeeze ignites the igniting agent according to a signal from the control device 70, and the gas generating agent is burned to generate nitrogen gas. And the winding-up part winds up a seatbelt by using the pressure of the generated nitrogen gas as power. Thereby, it is suppressed that a passenger | crew collides with the inside of the vehicle 200 at the time of a front collision.

  The right front seat side airbag 62, the left front seat side airbag 64, the right rear seat side airbag 66, and the left rear seat side airbag 68 correspond to the side collision occupant protection unit 60, respectively. The right front seat side airbag 62 is disposed on the window side surface of the right front seat 2 of the vehicle 200. The left front seat side airbag 64 is disposed on the window side surface of the left front seat 4 of the vehicle 200. The right rear seat side airbag 66 is disposed on the window side surface of the right rear seat 6 of the vehicle 200. The left rear seat side airbag 68 is disposed on the window side surface of the left rear seat 8 of the vehicle 200.

  The right front seat side airbag 62 is operated by the control device 70 based on signals from the right front seat B pillar sensor 32 and the floor Y-axis sensor 38. The left front seat side airbag 64 is operated by the control device 70 based on signals from the left front seat B pillar sensor 33 and the floor Y-axis sensor 38. The right rear seat side airbag 66 is operated by the control device 70 based on signals from the right rear seat C pillar sensor 35 and the floor Y-axis sensor 38. The left rear seat side airbag 68 is operated by the control device 70 based on signals from the left rear seat C pillar sensor 36 and the floor Y-axis sensor 38.

  Each of the right front seat side airbag 62, the left front seat side airbag 64, the right rear seat side airbag 66, and the left rear seat side airbag 68 may be a well-known inflator side airbag. Since the configuration of a known inflator type side airbag is the same as that of the known inflator type airbag described above, description thereof is omitted.

  The control device 70 is disposed on the floor portion of the vehicle 200. In FIG. 1, the control device 70 is illustrated outside the vehicle 200 in order to simplify the illustration. Note that when the control device 70 is disposed on the floor portion of the vehicle 200, the floor X-axis sensor 26 and the floor Y-axis sensor 38 may be disposed inside the control device 70.

  FIG. 2 is a block diagram schematically showing the overall configuration of the occupant protection device 10. As shown in FIG. 2, the control device 70 includes an I / O unit 72, a CPU 74, a ROM 76, a RAM 78, and a drive circuit unit 80. In the present embodiment, the floor X-axis sensor 26 and the floor Y-axis sensor 38 are arranged inside the control device 70.

  In FIG. 2, the I / O unit 72 has a function as an input / output interface for the CPU 74 to receive signals from the front impact detection unit 20 and the side impact detection unit 30. Signals from the front impact detection unit 20 and the side impact detection unit 30 are transmitted to the calculation unit 90 of the CPU 74 via the I / O unit 72.

  The CPU 74 includes a calculation unit 90 and a control unit 100. The calculation unit 90 calculates information required when the control unit 100 controls the front collision airbag 40, the seat belt pretensioner 50, and the side collision occupant protection unit 60. In the present embodiment, the calculation unit 90 calculates acceleration and speed based on the signal from the front impact detection unit 20 and transmits the calculation result to the control unit 100. In addition, the calculation unit 90 calculates acceleration and speed based on the signal from the side impact detection unit 30 and transmits the calculation result to the control unit 100.

  The control unit 100 controls the operations of the front collision airbag 40, the seat belt pretensioner 50, and the side collision occupant protection unit 60. In the present embodiment, the control unit 100 performs a front collision determination as to whether or not a front collision has occurred based on a signal from the front collision impact detection unit 20, and based on the determination result of the front collision determination, the front collision airbag. 40 and the operation of the seat belt pretensioner 50 are controlled. Further, the control unit 100 determines whether or not a side collision has occurred based on a signal from the side impact detection unit 30, and determines whether the side collision occupant protection unit 60 is in accordance with the determination result of the side collision determination. Control the operation. Further, in the present embodiment, after the seat belt pretensioner 50 is activated, the control unit 100 detects a side impact that detects an impact associated with the operation of the seat belt pretensioner 50 among the plurality of side impact detection units 30. The side collision determination based on the signal from the detection unit 30 is prohibited. Details of the operation of the control unit 100 will be described later.

  The ROM 76 stores a program, data, and the like for operating the CPU 74 in a nonvolatile manner. The ROM 76 has a function as a storage unit of the control device 70. The RAM 78 stores data for operating the CPU 74 in a volatile manner. The drive circuit unit 80 is a circuit for operating the front collision airbag 40, the seat belt pretensioner 50, and the side collision occupant protection unit 60 in response to a signal from the control unit 100.

  FIG. 3 is a functional block diagram illustrating an example of processing of the calculation unit 90. In FIG. 3, the process of the calculation unit 90 when an impact is applied to the side portion of the vehicle 200 is shown as an example of the process of the calculation unit 90. As shown in FIG. 3, an impact applied to the side of the vehicle 200 (hereinafter referred to as a side impact) is detected by at least some of the side impact detectors 30. The For example, the side impact is caused by the right front seat B pillar sensor 32, the left front seat B pillar sensor 33, the right rear seat C pillar sensor 35, and the left rear seat C pillar sensor 36 (hereinafter collectively referred to as a pillar sensor). Detected by at least one. Side impact is also detected by the floor Y-axis sensor 38.

  The output signal from the side impact detection unit 30, that is, the output signal from the pillar sensor and the output signal from the floor Y-axis sensor 38 are A / D converted by the I / O unit 72, respectively. As a result, the output signal from the pillar sensor and the output signal from the floor Y-axis sensor 38 are converted from analog signals to digital signals, respectively.

  The signal converted into the digital signal is offset-corrected by the arithmetic unit 90. For example, the low frequency component of the signal converted into the digital signal is removed by the high pass filter (HPF) of the calculation unit 90. Thereby, the signal converted into the digital signal is offset-corrected by the calculation unit 90.

  Of the offset-corrected signal, noise included in the signal from the pillar sensor is removed by the calculation unit 90. For example, the high-frequency component of the signal from the pillar sensor in the offset-corrected signal is removed by a low-pass filter (LPF). Thereby, noise of the signal from the pillar sensor is removed from the offset-corrected signal. As a result, the impact applied to the side of the vehicle 200 is calculated as acceleration.

  On the other hand, the signal from the floor Y-axis sensor 38 out of the offset-corrected signal is integrated after the noise included in the signal is removed by the arithmetic unit 90. As a result, the impact applied to the side of the vehicle 200 is calculated as the speed.

  The impact applied to the vehicle 200 at the time of the front collision is also calculated as acceleration and speed in the same manner as in FIG. For example, the impact applied to the vehicle 200 at the time of the front impact is detected by the front impact detection section 20 and then A / D converted. The A / D converted signal is offset corrected. Among the offset-corrected signals, signals from the right front sensor 22 and the left front sensor 24 are calculated as accelerations after removing noise. Of the offset-corrected signal, the signal from the floor X-axis sensor 26 is integrated after the noise contained in the signal is removed, and calculated as a speed.

  Next, the operation of the control unit 100 will be described. FIG. 4A is an example of a map that is referred to when the control unit 100 performs the front collision determination. FIG. 4B is an example of a map that is referred to when the control unit 100 performs a side collision determination. In FIG. 4A, the vertical axis represents acceleration and the horizontal axis represents speed. That is, in FIG. 4A, the vertical axis indicates the calculation result obtained by calculating the signals from the right front sensor 22 and the left front sensor 24 into acceleration by the calculation unit 90. In FIG. 4A, the horizontal axis indicates the calculation result obtained by calculating the signal from the floor X-axis sensor 26 to the speed by the calculation unit 90. The vertical axis in FIG. 4A corresponds to the magnitude of the signal from the front impact detection unit 20.

  In FIG. 4B, the vertical axis represents acceleration and the horizontal axis represents speed. That is, in FIG. 4B, the vertical axis indicates the calculation result obtained by calculating the signal from the pillar sensor into the acceleration by the calculation unit 90. In FIG. 4B, the horizontal axis indicates the calculation result obtained by calculating the signal from the floor Y-axis sensor 38 by the calculation unit 90. The vertical axis in FIG. 4B corresponds to the magnitude of the signal from the side impact detector 30.

  In FIG. 4A, the determination line 120 corresponds to a threshold when the control unit 100 determines whether or not a front collision has occurred. The area above the determination line 120 (area where the acceleration value is large) is an area where the control unit 100 determines that a front collision has occurred. On the other hand, the region below the determination line 120 (region where the acceleration value is small) is a region where the control unit 100 determines that no front collision has occurred. That is, the control unit 100 determines that the magnitude of the signal from the front impact detection unit 20 (the magnitude of the acceleration after the signal from the front impact detection unit 20 is calculated by the calculation unit 90) is a predetermined value (determination line). 120), it is determined that a front collision has occurred. Note that the map shown in FIG. 4A may be stored in advance in the ROM 76 of the control device 70.

  In FIG. 4B, the determination line 122 corresponds to a threshold when the control unit 100 determines whether or not a side collision has occurred. The region above the determination line 122 (region where the acceleration value is large) is a region where the control unit 100 determines that a side collision has occurred. On the other hand, the area below the determination line 122 (area where the acceleration value is small) is an area where the control unit 100 determines that no side collision has occurred. That is, the control unit 100 determines that the magnitude of the signal from the side impact detection unit 30 (the magnitude of the acceleration after the signal from the side impact detection unit 30 is computed by the computation unit 90) is a predetermined value (determination line). 122), it is determined that a side collision has occurred. Note that the map shown in FIG. 4B may be stored in advance in the ROM 76 of the control device 70.

  FIG. 5 is an example of a flowchart showing processing of the control unit 100. As shown in FIG. 5, the control unit 100 acquires the calculation result of the calculation unit 90 (step S1). For example, the control unit 100 acquires the acceleration and speed obtained by calculating the signal from the front impact detection unit 20 by the calculation unit 90.

  Next, the control unit 100 determines whether or not a front collision has occurred (step S2). For example, the control unit 100 determines whether or not the magnitude of acceleration and the magnitude of velocity acquired in step S1 are included in a region above the determination line of the map shown in FIG. When it is determined that the magnitude of acceleration and the magnitude of velocity acquired in step S1 are included in the region above the determination line 120 of the map shown in FIG. It is determined that a collision has occurred. On the other hand, when it is not determined that the magnitude of acceleration and the magnitude of velocity acquired in step S1 are included in the region above the determination line 120 of the map shown in FIG. Determines that no frontal collision has occurred.

  When it is determined in step S2 that a front collision has occurred, the control unit 100 activates the front collision airbag 40 and the seat belt pretensioner 50 (step S3). For example, the control unit 100 sends a signal to the drive circuit unit 80 so that the right front collision airbag 42 and the left front collision airbag 44 are deployed. At the same time, the control unit 100 sends a signal to the drive circuit unit 80 so that the right front seat belt pretensioner 52 and the left front seat belt pretensioner 54 operate.

  Next, the control unit 100 prohibits side collision determination based on a signal from the side impact detection unit 30 that has detected an impact associated with the operation of the seat belt pretensioner 50 (step S4). For example, the control unit 100 prohibits a side collision determination based on a signal from the side impact detection unit 30 disposed at the site of the vehicle 200 where the activated seat belt pretensioner 50 is disposed. For example, when the right front seat belt pretensioner 52 is activated, the control unit 100 prohibits the side collision determination based on the signal from the right front seat B pillar sensor 32. Further, when the left front seat belt pretensioner 54 is activated, the control unit 100 prohibits the side collision determination based on the signal from the left front seat B pillar sensor 33.

  Next, the control unit 100 acquires the calculation result of the calculation unit 90 (step S5). For example, the control unit 100 acquires the acceleration and the speed at which the signal from the side impact detection unit 30 is calculated by the calculation unit 90.

  Next, the control unit 100 is based on a signal based on a signal from the side impact detection unit 30 excluding the side impact detection unit 30 that detects an impact associated with the operation of the seat belt pretensioner 50 among the plurality of side impact detection units 30. A collision determination is performed (step S6). That is, the control unit 100 performs a side collision determination based on a signal from the side impact detection unit 30 that has not detected an impact associated with the operation of the seat belt pretensioner 50. For example, when the side collision determination based on the signal from the right front seat B pillar sensor 32 and the side collision determination based on the signal from the left front seat B pillar sensor 33 are prohibited in step S4, the control unit 100 Signals from the right rear seat C pillar sensor 35 and the left rear seat C pillar sensor 36, which are the side impact detectors 30 excluding the seat B pillar sensor 32 and the left front seat B pillar sensor 33, and the floor Y axis sensor 38 Based on these signals, a side collision determination is made as to whether or not a side collision has occurred.

  In the above case, the control unit 100 determines whether or not the magnitude of the acceleration calculated from the signal from the right rear seat C pillar sensor 35 is included in the region above the determination line 122 shown in FIG. Determine. As a result, if it is determined that the magnitude of the acceleration calculated from the signal from the right rear seat C pillar sensor 35 is included in the region above the determination line 122 shown in FIG. The part 100 determines that a side collision has occurred from the vicinity of the right rear seat C pillar part. On the other hand, if it is not determined that the magnitude of the acceleration calculated from the signal from the right rear seat C pillar sensor 35 is included in the region above the determination line 122 shown in FIG. The part 100 determines that a side collision from the vicinity of the right rear seat C-pillar part has not occurred.

  Similarly, the control unit 100 determines whether or not the magnitude of the acceleration calculated from the signal from the left rear seat C pillar sensor 36 is included in a region above the determination line 122 shown in FIG. judge. Thereby, it is possible to determine whether or not a side collision has occurred from the vicinity of the left rear seat C pillar portion.

  When it is determined in step S6 that a side collision has occurred, the control unit 100 activates the side collision occupant protection unit 60 (step S7). For example, when it is determined in step S6 that a side collision from the vicinity of the right rear seat C pillar portion has occurred, the control unit 100 causes the drive circuit unit 80 to operate the right rear seat side airbag 66. Send a signal. Thereby, the right rear seat side airbag 66 is operated.

  If it is determined in step S6 that a side collision from the vicinity of the left rear seat C pillar portion has occurred, the control unit 100 sets the drive circuit unit 80 to operate the left rear seat side airbag 68. Send a signal. As a result, the left rear seat side airbag 68 is activated. Next, the control unit 100 ends the execution of the flowchart.

  On the other hand, if it is not determined in step S2 that a front collision has occurred, the control unit 100 executes step S5. In Step S6, when it is not determined that a side collision has occurred, the control unit 100 ends the execution of the flowchart.

  According to the control device 70 according to the present embodiment, after the seat belt pretensioner 50 is operated, the control unit 100 detects an impact associated with the operation of the seat belt pretensioner 50 among the plurality of side impact detection units 30. The side collision determination based on the signal from the side impact detection unit 30 is prohibited. Accordingly, the side impact occupant protection unit 60 can be prevented from operating due to the operation of the seat belt pretensioner 50, and the side impact in which the impact associated with the operation of the seat belt pretensioner 50 was not detected. The side collision occupant protection unit 60 can be operated based on the determination result of the side collision determination based on the signal from the detection unit 30. As a result, it is possible to appropriately protect passengers at the time of multiple collisions such as when a side collision occurs at the same time as the front collision occurs or after a front collision occurs.

  In the present embodiment, the control unit 100 operates the seat belt pretensioner 50 when it is determined that a front collision has occurred, but is not limited thereto. For example, the control unit 100 may operate the seat belt pretensioner 50 when it is determined that a rollover has occurred. In this case, vehicle 200 further includes a curtain airbag (not shown) for protecting an occupant during rollover. The occupant protection device 10 further includes a roll rate detector (not shown) for detecting a roll rate at the time of rollover. The control unit 100 determines whether a rollover has occurred based on the detection result of the roll rate detection unit. If it is determined that rollover has occurred, the control unit 100 operates the seat belt pretensioner 50 and the curtain airbag.

  As described above, even when the seat belt pretensioner 50 is operated when the control unit 100 determines that a rollover has occurred, according to the control device 70 according to the present embodiment, the control unit 100 After the belt pretensioner 50 is activated, side collision determination based on a signal from the side impact detection unit 30 that detects an impact associated with the operation of the seat belt pretensioner 50 among the plurality of side impact detection units 30 is prohibited. To do. Thereby, the passenger | crew at the time of the multiple collision which the side collision produced after the roll over occurred can be protected appropriately.

(Modification 1)
In addition, after prohibiting the side collision determination based on the signal from the side impact detection unit 30 that detects the impact caused by the operation of the seat belt pretensioner 50, the control unit 100 further operates the seat belt pretensioner 50. The side collision detection based on the signal from the side impact detection unit 30 that has detected the accompanying impact is performed, and the side impact detection unit 30 that detects the impact associated with the operation of the seat belt pretensioner 50 among the plurality of side impact detection units 30. Alternatively, a side collision determination based on a signal from the side impact detection unit 30 may be substituted. FIG. 6 is an example of a flowchart illustrating processing of the control unit 100 of the control device 70 according to the first modification of the first embodiment. The flowchart shown in FIG. 6 is different from the flowchart shown in FIG. 5 in that it further includes step S4-1, step S4-2, step S4-3, step S4-4, and step S4-5. . Other configurations are the same as those in the flowchart shown in FIG. In addition, illustration is abbreviate | omitted about step S5 of FIG. 6, step S6, and step S7.

  In step S4-1 in FIG. 6, the control unit 100 determines whether or not the front seat seat belt pretensioner is activated. For example, the control unit 100 determines whether the right front seat belt pretensioner 52 and the left front seat belt pretensioner 54 are operated. If it is not determined in step S4-1 that the front seat seat belt pretensioner has been operated, the control unit 100 executes step S5.

  On the other hand, when it is determined in step S4-1 that the front seat seat belt pretensioner has been operated, the control unit 100 determines whether or not the rear seat seat belt pretensioner has been operated (step S4). -2). For example, the control unit 100 determines whether the right rear seat belt pretensioner 56 has been operated and whether the left rear seat belt pretensioner 58 has been operated.

  When it is determined in step S4-2 that the rear seat seat belt pretensioner has been operated, the control unit 100 detects an impact associated with the operation of the front seat seat belt pretensioner that has been operated in step S4-1. The side impact detection based on the signal from the side impact detection unit 30 is prohibited, and the impact from the side impact detection unit 30 that detected the impact associated with the operation of the rear seat belt pretensioner that was activated in step S4-2 is detected. The side collision determination based on the signal is prohibited (step S4-3).

  For example, it is determined in step S4-1 that the right front seat belt pretensioner 52 and the left front seat belt pretensioner 54 have been operated, and in step S4-2, the right rear seat belt pretensioner 56 and the left rear seat belt pretensioner. When it is determined that 58 is activated, the control unit 100 determines the side collision based on the signal from the right front seat B pillar sensor 32, the side collision determination based on the signal from the left front seat B pillar sensor 33, and the right rear seat. Side collision determination based on the signal from the C pillar sensor 35 and side collision determination based on the signal from the left rear seat C pillar sensor 36 are prohibited. Next, the control unit 100 executes Step S5.

  On the other hand, if it is not determined in step S4-2 that the rear seat seat belt pretensioner has been operated, the control unit 100 accompanies the operation of the front seat seat belt pretensioner that has been operated in step S4-1. The side collision determination based on the signal from the side impact detection unit 30 that has detected the impact is prohibited (step S4-4). Next, the control unit 100 determines a side collision based on a signal from the side impact detection unit 30 that has detected an impact associated with the operation of the front seat seat belt pretensioner, and determines an impact associated with the operation of the front seat seat belt pretensioner. The side collision detection based on the signal from the side impact detection unit 30 excluding the side impact detection unit 30 that has detected this is substituted (step S4-5).

  For example, if it is determined in step S4-1 that the right front seat belt pretensioner 52 and the left front seat belt pretensioner 54 have been operated, the control unit 100 determines in step S4-4 that the right front seat B pillar sensor. The side collision determination based on the signal from 32 and the side collision determination based on the signal from the left front seat B pillar sensor 33 are prohibited. Next, in step S4-5, the control unit 100 substitutes the side collision determination based on the signal from the right front seat B pillar sensor 32 with, for example, the side collision determination based on the signal from the right rear seat C pillar sensor 35. In step S4-5, the control unit 100 substitutes the side collision determination based on the signal from the left front seat B pillar sensor 33 with, for example, the side collision determination based on the signal from the left rear seat C pillar sensor 36. Next, the control unit 100 executes Step S5.

  In this case, in step S6, the control unit 100 has caused a side collision to the vicinity of the right front seat B pillar portion based on the signal from the right rear seat C pillar sensor 35 and the signal from the floor Y-axis sensor 38. A side collision judgment is made. Further, based on the signal from the right rear seat C pillar sensor 35 and the signal from the floor Y-axis sensor 38, a side collision determination is made as to whether or not a side collision has occurred near the right rear seat C pillar portion. Similarly, in step S6, the control unit 100 determines whether or not a side collision has occurred near the left front seat B pillar portion based on the signal from the left rear seat C pillar sensor 36 and the signal from the floor Y axis sensor 38. The side collision is determined. Further, based on the signal from the left rear seat C pillar sensor 36 and the signal from the floor Y-axis sensor 38, a side collision determination is made as to whether or not a side collision has occurred near the left rear seat C pillar portion.

  In addition, as an alternative method of step S4-5, for example, as shown in FIG. In such a map, a method of newly setting a second determination line having a higher value than the determination line can be used in addition to the determination line for determining the side collision to the vicinity of the right rear seat C pillar portion. . In this case, when the magnitude of the acceleration calculated from the signal from the right rear seat C pillar sensor 35 by the calculation unit 90 is included in the region above the second determination line, the control unit 100 It can be determined that a side collision near the B pillar portion has occurred.

  According to the control device 70 according to the present modification, after the control unit 100 prohibits the side collision determination based on the signal from the side impact detection unit 30 that detects the impact associated with the operation of the seat belt pretensioner 50. Further, the side collision determination based on the signal from the side impact detection unit 30 that detects the impact associated with the operation of the seat belt pretensioner 50 is performed according to the operation of the seat belt pretensioner 50 among the plurality of side impact detection units 30. A side collision determination based on a signal from the side impact detection unit 30 excluding the side impact detection unit 30 that has detected the impact is substituted. As a result, a side collision occupant protection unit 60 that operates based on a signal from the side impact detection unit 30 that has detected an impact associated with the operation of the seat belt pretensioner 50 is generated along with the operation of the seat belt pretensioner 50. The operation can be performed according to the determination result of the side collision determination based on the signal from the side impact detection unit 30 that did not detect the impact. Thereby, the passenger | crew at the time of a multiple collision can be protected appropriately.

(Modification 2)
In addition, after prohibiting the side collision determination, the control unit 100 further detects a signal from the side impact detection unit 30 that detects an impact associated with the operation of the seat belt pretensioner 50 and the operation of the seat belt pretensioner 50. Whether or not a side collision has occurred based on a signal from the side impact detection unit 30 disposed on the side of the side impact detection unit 30 that has detected the accompanying impact on the side opposite to the center line of the vehicle 200 The prohibition of the side collision determination may be canceled based on the determination result. As a specific example of the processing of the control unit 100 of the control device 70 according to the second modification of the first embodiment, for example, a case where the right front seat belt pretensioner 52 and the left front seat belt pretensioner 54 are operated will be described.

  For example, when the right front seat belt pretensioner 52 and the left front seat belt pretensioner 54 are activated, the control unit 100 first determines the side collision based on signals from the right front seat B pillar sensor 32 and the left front seat B pillar sensor 33. Is prohibited.

  Next, the control unit 100 receives the signal from the right front seat B pillar sensor 32 and the left front seat B pillar sensor 33 disposed on the side of the right front seat B pillar sensor 32 facing the center line of the vehicle 200. Whether or not a side collision has occurred. More specifically, the control unit 100 determines the magnitude of the acceleration obtained by calculating the signal from the right front seat B pillar sensor 32 by the calculating unit 90 and the acceleration obtained by calculating the signal from the left front seat B pillar sensor 33 by the calculating unit 90. It is determined whether or not the difference between the two is larger than a predetermined value. As a result, when it is determined that the difference between the two is larger than a predetermined value, it is determined that a side collision has occurred. In this case, the control unit 100 cancels the prohibition of the side collision determination.

  On the other hand, if it is not determined that the difference between the two is larger than the predetermined value, the control unit 100 does not cause a side collision, that is, the impact caused by the operation of the right front seat belt pretensioner 52 and the left front seat. It is determined that an impact accompanying the operation of the seat belt pretensioner 54 has occurred. In this case, the prohibition of side collision determination is not released.

  The predetermined values include, for example, the magnitude of the acceleration calculated by the calculation unit 90 from the signal from the right front seat B pillar sensor 32 when an impact due to the operation of the right front seat belt pretensioner 52 occurs, The difference between the magnitude of the acceleration calculated by the calculation unit 90 from the signal from the left front seat B pillar sensor 33 when an impact due to the operation of the seat belt pretensioner 54 occurs can be used.

  FIG. 7 is an example of a flowchart illustrating processing of the control unit 100 of the control device 70 according to the present modification. The flowchart shown in FIG. 7 is different from the flowchart shown in FIG. 5 in that step S4-10 and step S4-11 are further included. Other configurations are the same as those in the flowchart shown in FIG. Note that step S5, step S6, and step S7 in FIG. 7 are not shown.

  In step S4-10, the control unit 100 detects a signal from the side impact detection unit 30 that detects an impact associated with the operation of the seat belt pretensioner 50, and a side portion that detects an impact associated with the operation of the seat belt pretensioner 50. It is determined whether or not a side collision has occurred based on a signal from the side impact detection unit 30 disposed on the side of the impact detection unit 30 that is opposed to the center line of the vehicle 200. For example, when the side collision determination based on the signal from the right front seat B pillar sensor 32 and the side collision determination based on the signal from the left front seat B pillar sensor 33 are prohibited, the control unit 100 causes the right front seat B pillar sensor to Whether or not the difference between the magnitude of the acceleration calculated from the signal from 32 by the calculation unit 90 and the magnitude of the acceleration calculated from the signal from the left front seat B pillar sensor 33 by the calculation unit 90 is greater than a predetermined value. Determine. As a result, when it is determined that the difference between the two is larger than a predetermined value, it is determined that a side collision has occurred. In this case, the control unit 100 cancels the prohibition of the side collision determination (step S4-11). Next, the control unit 100 executes Step S5.

  On the other hand, when it is not determined in step S4-10 that a side collision has occurred, the control unit 100 executes step S5. In this case, the prohibition of side collision determination is not released.

  Here, the difference in the magnitude of the signal from the side impact detectors 30 arranged on the left and right of the vehicle 200 when a side collision occurs is the difference between the case where an impact is generated due to the operation of the seat belt pretensioner 50. This is considered to be large compared to the difference in signal magnitude. For example, when the right front seat belt pretensioner 52 and the left front seat belt pretensioner 54 are activated during a front collision, and a side collision occurs from either the left or right side of the vehicle 200 during a side collision, The difference in signal magnitude from the left and right side impact detectors 30 when a protrusion occurs is the difference in signal magnitude from the left and right side impact detectors 30 when the seat belt pretensioner 50 is activated. Bigger than that. That is, the control unit 100 determines whether the impact is due to a side collision or the impact due to the operation of the seat belt pretensioner 50 by acquiring the difference in signal magnitude from the left and right side impact detection units 30. be able to.

  Therefore, according to the control device 70 according to the present modification, the control unit 100 further detects the impact associated with the operation of the seat belt pretensioner 50 after prohibiting the side collision determination. From the side impact detection unit 30 disposed on the opposite side of the vehicle 200 center line of the side impact detection unit 30 that detects the signal from the vehicle and the impact associated with the operation of the seat belt pretensioner 50 Whether or not a side collision has occurred, and the prohibition of the side collision determination is canceled based on the determination result. For example, after the control unit 100 prohibits the side collision determination, the difference in the magnitude of the signal from the left and right side impact detection units 30 is caused when the impact caused by the operation of the seat belt pretensioner 50 occurs. If it is greater than the difference, it is determined that a side collision has occurred, and if it is determined that a side collision has occurred, the prohibition of side collision determination can be cancelled. Thereby, the passenger | crew at the time of a multiple collision can be protected appropriately.

  Next, the control device 70 according to the second embodiment of the present invention will be described. After the seat belt pretensioner 50 is activated, the control unit 100 of the control device 70 according to the present embodiment detects the seat belt from a signal from the side impact detection unit 30 that detects an impact associated with the operation of the seat belt pretensioner 50. The figure which the magnitude of the signal from the side part impact detection part 30 which detected the impact accompanying the operation | movement of the seatbelt pretensioner 50 after removing the signal regarding the impact accompanying the action | operation of the pretensioner 50 refers at the time of side collision determination. It is determined whether it is higher than the determination line 122 of the map shown in 4 (b). First, the control unit 100 of the control device 70 according to the present embodiment relates to an impact associated with the operation of the seat belt pretensioner 50 from a signal from the side impact detection unit 30 that has detected an impact associated with the operation of the seat belt pretensioner 50. A process for removing a signal will be described.

  FIG. 8A is an example of a signal related to an impact associated with the operation of the seat belt pretensioner 50. Specifically, FIG. 8A shows an example of a signal in which the impact generated by the operation of the right front seat belt pretensioner 52 detected by the right front seat B-pillar sensor 32 is processed into acceleration by the calculation unit 90. ing. In FIG. 8A, the vertical axis represents acceleration and the horizontal axis represents time.

  FIG. 8B is an example of a signal from the side impact detector 30 that detects an impact associated with the operation of the seat belt pretensioner 50. Specifically, FIG. 8B shows the impact acquired by the right front seat B pillar sensor 32 when a side collision occurs near the right front seat B pillar portion simultaneously with the operation of the right front seat belt pretensioner 52. Shows an example of a signal that has been arithmetically processed by the arithmetic unit 90. In FIG. 8B, the vertical axis represents acceleration and the horizontal axis represents time.

  FIG. 8C illustrates an impact caused by the operation of the seat belt pretensioner 50 based on a signal from the side impact detection unit 30 in which the control unit 100 according to the present embodiment detects an impact caused by the operation of the seat belt pretensioner 50. It is an example of the signal after the signal regarding is removed. Specifically, FIG. 8C is an example of a signal after the signal illustrated in FIG. 8A is removed from the signal illustrated in FIG. 8B by the control unit 100 according to the present embodiment. . In FIG. 8C, the vertical axis represents acceleration and the horizontal axis represents time. That is, the control part 100 can acquire the signal corresponding to the impact at the time of a side collision by removing the signal shown in FIG. 8A from the signal shown in FIG. It should be noted that a signal relating to the impact associated with the operation of the seat belt pretensioner 50 shown in FIG.

  FIG. 9 is an example of a flowchart illustrating processing of the control unit 100 of the control device 70 according to the present embodiment. The flowchart shown in FIG. 9 is different from the flowchart shown in FIG. 5 in that step S4 is not included and step S5-1 is further included. Other configurations are the same as those in the flowchart shown in FIG.

  In step S <b> 5-1, the control unit 100 removes a signal related to the impact associated with the operation of the seat belt pretensioner 50 from the signal from the side impact detection unit 30 that has detected the impact associated with the operation of the seatbelt pretensioner 50. Specifically, the control unit 100 removes the signal shown in FIG. 8A from the signal shown in FIG. Thereby, the control part 100 can acquire the signal corresponding to the impact at the time of a side collision. Next, the control unit 100 executes Step S6. In step S6, the magnitude of the signal corresponding to the impact caused by the side collision, that is, the magnitude of the acceleration corresponding to the impact caused by the side collision is shown in the area above the determination line 122 of the map shown in FIG. When it is determined that it is included, the control unit 100 activates the side collision occupant protection unit 60 (step S7).

  According to the control device 70 according to the present embodiment, after the seat belt pretensioner 50 is operated, the control unit 100 detects a signal from the side impact detection unit 30 that detects an impact caused by the operation of the seat belt pretensioner 50. Thus, a signal relating to an impact caused by the operation of the seat belt pretensioner 50 is removed. Thereby, the control part 100 can acquire the signal corresponding to the impact at the time of a side collision. As a result, the control unit 100 can suppress the operation of the side collision occupant protection unit 60 due to the operation of the seat belt pretensioner 50, and the magnitude of the signal corresponding to the impact at the time of the side collision, That is, when the magnitude of acceleration corresponding to the impact at the time of a side collision is included in the region above the determination line 122, the side collision occupant protection unit 60 can be operated. Thereby, the passenger | crew at the time of a multiple collision can be protected appropriately.

  Subsequently, a control device 70 according to a third embodiment of the present invention will be described. After the seat belt pretensioner 50 is activated, the control unit 100 of the control device 70 according to the present embodiment displays the determination line 122 of the map shown in FIG. The value is changed to a value higher than the value before the tensioner 50 is operated. FIG. 10 is an example of a map that the control unit 100 of the control device 70 according to the present embodiment refers to when making a side collision determination. The map shown in FIG. 10 is different from the map shown in FIG. 4B in that a determination line 124 is further illustrated in addition to the determination line 122.

  As illustrated in FIG. 10, the control unit 100 of the control device 70 according to the present embodiment changes the determination line 122 to the determination line 124 after the seat belt pretensioner 50 is operated. The determination line 124 is not particularly limited as long as it is a determination line corresponding to an acceleration magnitude higher than the acceleration magnitude corresponding to the determination line 122. For example, as the determination line 124, a determination line corresponding to an acceleration magnitude about 1.5 times that of the acceleration magnitude corresponding to the determination line 122 can be used.

  FIG. 11 is an example of a flowchart illustrating processing of the control unit 100 of the control device 70 according to the present embodiment. The flowchart shown in FIG. 11 differs from the flowchart shown in FIG. 5 in that step S4a is included instead of step S4. Other configurations are the same as those in the flowchart shown in FIG. In addition, about step S5 of FIG. 11, step S6, and step S7, illustration is abbreviate | omitted.

  In step S4a, the control unit 100 changes the determination line 122 to the determination line 124 as shown in FIG. Next, the control unit 100 executes Step S5. In this case, in the side collision determination of step S6, the control unit 100 includes the magnitude of the acceleration calculated by the calculation unit 90 from the side impact detection unit 30 in the region above the determination line 124. In this case, it is determined that a side collision has occurred.

  According to the control device 70 according to the present embodiment, the control unit 100 compares the determination line 122 (predetermined value) with the value before the seat belt pretensioner 50 operates after the seat belt pretensioner 50 operates. Then, the value is changed to a higher value (judgment line 124). Accordingly, it is possible to suppress the side collision occupant protection unit 60 from operating due to the operation of the seat belt pretensioner 50, and there is a large impact from the side exceeding the impact associated with the operation of the seat belt pretensioner 50. In other words, that is, when there is an impact corresponding to the magnitude of acceleration included in the region above the determination line 124 from the side of the vehicle 200, the side collision occupant protection unit 60 can be operated. . Thereby, the passenger | crew at the time of a multiple collision can be protected appropriately.

  Although the preferred embodiments of the present invention have been described in detail above, the present invention is not limited to such specific embodiments, and various modifications and changes can be made within the scope of the gist of the present invention described in the claims. It can be changed.

1 is a block diagram schematically showing an overall configuration of a vehicle in which a control device according to Embodiment 1 of the present invention is incorporated. 1 is a block diagram schematically illustrating an overall configuration of an occupant protection device according to a first embodiment. FIG. 5 is a functional block diagram illustrating an example of processing of a calculation unit according to the first embodiment. FIG. 4A is an example of a map that is referred to when the control unit of the control device according to the first embodiment performs the front collision determination. FIG. 4B is an example of a map that is referred to when the control unit of the control device according to the first embodiment performs the side collision determination. 3 is an example of a flowchart illustrating processing of a control unit of the control device according to the first embodiment. 6 is an example of a flowchart illustrating a process of a control unit of a control device according to a first modification of the first embodiment. 10 is an example of a flowchart illustrating processing of a control unit of a control device according to a second modification of the first embodiment. FIG. 8A is an example of a signal related to an impact associated with the operation of the seat belt pretensioner of the control device according to the second embodiment. FIG. 8B is an example of a signal from a side impact detector that detects an impact associated with the operation of the seat belt pretensioner of the control device according to the second embodiment. FIG. 8C illustrates an impact associated with the operation of the seat belt pretensioner based on a signal from a side impact detection unit in which an impact associated with the operation of the seat belt pretensioner is detected by the control unit of the control device according to the second embodiment. It is an example of the signal after a signal is removed. 9 is an example of a flowchart illustrating processing of a control unit of a control device according to a second embodiment. It is an example of the map which the control part of the control apparatus which concerns on Example 3 refers in the case of side collision determination. 12 is an example of a flowchart illustrating processing of a control unit of a control device according to a third embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Crew protection device 20 Front collision impact detection part 22 Right front sensor 24 Left front sensor 26 Floor X-axis sensor 30 Side impact detection part 32 Right front seat B pillar sensor 33 Left front seat B pillar sensor 35 Right rear seat C pillar sensor 36 Left Rear seat C pillar sensor 38 Floor Y-axis sensor 40 Front impact airbag 42 Right front impact airbag 44 Left front impact airbag 50 Seat belt pretensioner 52 Right front seat seat belt pretensioner 54 Left front seat seat belt pretensioner 56 Right rear seat belt Pretensioner 58 Left rear seat seatbelt pretensioner 60 Side collision occupant protection unit 62 Right front seat side airbag 64 Left front seat side airbag 66 Right rear seat side airbag 68 Left rear seat side airbag 70 Control device 100 Control unit 120 , 122, 124 Decision line 200 Vehicle

Claims (6)

A plurality of side impact detectors for detecting an impact generated on a side portion of the vehicle, a seat belt pretensioner disposed on the side portion of the vehicle, and a side impact occupant protection for protecting an occupant during a side impact A control device used for an occupant protection device comprising:
A control unit for controlling the operation of the seat belt pretensioner and the side collision occupant protection unit;
The control unit performs a side collision determination as to whether or not a side collision has occurred based on signals from the plurality of side impact detection units, and the side collision occupant protection unit based on a determination result of the side collision determination After the seat belt pretensioner is actuated, after the seat belt pretensioner is actuated, it is based on a signal from a side impact detector that detects an impact associated with the operation of the seat belt pretensioner among the plurality of side impact detectors. A control device for an occupant protection device, wherein side collision determination is prohibited. A plurality of side impact detectors for detecting an impact generated on a side portion of the vehicle, a seat belt pretensioner disposed on the side portion of the vehicle, and a side impact occupant protection for protecting an occupant during a side impact A control device used for an occupant protection device comprising:
A control unit for controlling the operation of the seat belt pretensioner and the side collision occupant protection unit;
A storage unit for storing a signal relating to an impact associated with the operation of the seat belt pretensioner,
The control unit determines that a side collision has occurred when a magnitude of a signal from at least some of the plurality of side impact detection units is higher than a predetermined value, and uses the side collision. After the occupant protection unit is activated and the seat belt pretensioner is activated, from the side impact detection unit that detects an impact associated with the operation of the seat belt pretensioner among the plurality of side impact detection units. After removing the signal stored in the storage unit from the signal, it is determined whether or not the magnitude of the signal from the side impact detection unit that detects the impact associated with the operation of the seat belt pretensioner is higher than the predetermined value. A control device for an occupant protection device, characterized in that a determination is made.   After the control unit prohibits the side collision determination, the control unit further performs a side collision determination based on a signal from a side impact detection unit that detects an impact associated with the operation of the seat belt pretensioner. 2. A side collision determination based on a signal from a side impact detection unit excluding a side impact detection unit that detects an impact associated with the operation of the seat belt pretensioner among the impact detection units is substituted. Control device for passenger protection device. The plurality of side impact detectors are arranged on the side facing the side impact detector disposed on one side across the center line of the vehicle and across the center line of the side impact detector. A side impact detector disposed on the side, and
After prohibiting the side collision determination, the control unit further includes a signal from a side impact detection unit that detects an impact associated with the operation of the seat belt pretensioner, and an operation of the seat belt pretensioner. It is determined whether or not a side collision has occurred based on a signal from the side impact detection unit disposed on the side portion facing the center line of the side impact detection unit that has detected the impact, The control device for an occupant protection device according to claim 1, wherein the prohibition of the side collision determination is canceled based on the determination result. A plurality of side impact detectors for detecting an impact generated on a side portion of the vehicle, a seat belt pretensioner disposed on the side portion of the vehicle, and a side impact occupant protection for protecting an occupant during a side impact A control device used for an occupant protection device comprising:
A control unit for controlling the operation of the seat belt pretensioner and the side collision occupant protection unit;
The control unit determines that a side collision has occurred when a magnitude of a signal from at least some of the plurality of side impact detection units is higher than a predetermined value, and uses the side collision. After the occupant protection unit is activated and the seat belt pretensioner is activated, the predetermined value is changed to a value higher than the value before the seat belt pretensioner is activated. Control device for occupant protection device. A plurality of side impact detectors for detecting an impact generated on the side of the vehicle;
A seat belt pretensioner disposed on a side of the vehicle;
A side impact occupant protection unit that protects the occupant during a side impact;
A control device for controlling the operation of the seat belt pretensioner and the side collision occupant protection unit,
The said control apparatus is a control apparatus of any one of Claims 1-5, The passenger | crew protection apparatus characterized by the above-mentioned.

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