JP2016055702A - Collision detection device and emergency notification device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a collision detection device and an emergency notification device for a vehicle, which allow for accurate detection of a vehicle condition upon collision.SOLUTION: A pair of pillar acceleration sensors 2a, 2b for detecting forward-and-backward acceleration Gx and lateral acceleration Gy are mounted on the left and right front pillars of a vehicle. Meanwhile, the front part, center pillar, door, locker, and so on are not provided with an acceleration sensor. The collision determination unit 3b of a controller 3 detects the collision of the vehicle on the basis of values detected by a floor acceleration sensor 3a and pillar acceleration sensors 2a, 2b, and actuates an air bag device 4. The condition-information creating block 3k of the controller 3 creates vehicle condition information on the basis of values detected by the pillar acceleration sensors 2a, 2b in the event of a collision. A communication unit 5 transmits a transmission signal including condition information created by the condition-information creating block 3k, to a rescue center 9.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a collision detection device that detects a vehicle collision and a vehicle emergency notification device that makes an emergency call to a rescue center at the time of a vehicle collision.

  Collision judgment based on the acceleration generated in the vehicle, in order to protect the occupant from the impact of the collision by operating the occupant protection device in the event of a vehicle collision, or to send information about the vehicle state at the time of the collision to an external rescue center There has been a conventional technique related to a collision detection apparatus that performs the above (see, for example, Patent Document 1). Usually, an acceleration sensor attached to a vehicle to detect a collision is often provided in the front part of the vehicle. Since the acceleration sensor attached to the front part of the vehicle is close to the collision part, it is possible to detect the collision of the vehicle at an early stage and to quickly operate the airbag device or the seat belt device with a pretensioner. To do.

JP 2011-225149 A

However, on the other hand, the front part of the vehicle is a crash zone, and there is an extremely high possibility that the vehicle will be deformed and destroyed by a collision. If the front part of the vehicle is deformed, the acceleration sensor in the crash zone may be damaged, or the connected wire cable may be disconnected. Even if the acceleration sensor or the wire cable breaks, the occupant protection device can be operated if the detected acceleration reaches a predetermined threshold or more before the breakage.
However, in order to transmit information about the vehicle that has collided to the rescue center, when trying to form state information of the collision vehicle, such as the vehicle's collision mode and the behavior of the passenger at the time of the collision, during a predetermined period after the collision Acceleration detection is required. On the other hand, when the acceleration sensor or the wire cable is damaged, it is impossible to detect the acceleration generated in the vehicle thereafter, and thus it becomes difficult to form the state information of the collision vehicle.

In general, in a vehicle, a floor acceleration sensor capable of detecting the longitudinal and lateral acceleration of the vehicle is provided in the airbag controller. The floor acceleration sensor is often disposed below the dashboard and is less likely to be damaged by a collision.
However, it is difficult to obtain early collision information because the floor sensor is disposed at the center of the vehicle away from the outer periphery of the vehicle, which is the collision position. In addition, since the floor sensor is near the center of the vehicle, the collision acceleration is attenuated and becomes a combined acceleration of various accelerations generated in the crash zone due to the collision, so it is difficult to obtain acceleration information for determining the collision mode. It is. Furthermore, in order to determine a collision, it is required from the viewpoint of ensuring reliability to use information at a plurality of positions of the vehicle. Therefore, it is difficult to acquire the acceleration for forming the state information only by the floor acceleration sensor because of the mounting position in the vehicle.
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a collision detection device and a vehicle emergency call device that can accurately detect the state of a vehicle at the time of a collision.

  In order to solve the above-described problem, the invention of the collision detection device according to claim 1 includes an impact detection means (2a, 2b, 3a, 6a, 6b, 7) for detecting an impact generated in the vehicle (8), A collision detection device (11, 11A, 11B) including a collision determination unit (3b) for detecting that the vehicle has collided based on a detection value by the impact detection unit. A pair of pillar impact sensors (2a, 2b) that are attached to the left and right front pillars (8a) and detect at least an impact (Gx) generated in the longitudinal direction of the vehicle are included.

  According to this configuration, the impact detection means includes a pair of pillar impact sensors that are attached to the left and right front pillars of the vehicle and detect at least an impact generated in the vehicle longitudinal direction. As described above, since the pillar impact sensor is not provided in the crash zone of the vehicle, even if the vehicle collides, acquisition of the impact detection value is not interrupted due to the damage of the pillar impact sensor. For this reason, after the collision, it is possible to accurately detect the state of the vehicle based on the detection value of the pillar impact sensor and form the state information of the collision vehicle. Further, the detected value can be acquired from the pillar impact sensor until the impact disappears after the occurrence of the collision, and the occupant protection device such as the airbag device can be operated accurately.

The figure which showed the vehicle with which the emergency call apparatus for vehicles by Embodiment 1 of this invention was attached, and a relief center The block diagram which showed the collision detection apparatus by Embodiment 1, the emergency call apparatus for vehicles, and a rescue center The figure which showed the detected value by the front acceleration sensor attached to the vehicle The figure which showed the detection value by the pillar acceleration sensor The figure which showed the acceleration which each acceleration sensor of the vehicle detects in the center pole collision The figure which showed the acceleration which each acceleration sensor of the vehicle detects in frontal collision The figure which showed the acceleration which each acceleration sensor of the vehicle detects in the offset collision The figure which showed the whole flowchart of the collision detection and emergency notification by Embodiment 1. The figure which showed the flowchart of the passenger | crew behavior determination represented to FIG. The figure which showed the flowchart of trauma level determination represented to FIG. The figure which showed the vehicle with which the emergency call apparatus for vehicles by Embodiment 2 was attached, and a relief center The block diagram which showed the collision detection apparatus by Embodiment 2, the emergency call apparatus for vehicles, and the rescue center The figure which showed the vehicle with which the emergency call apparatus for vehicles by Embodiment 3 was attached, and a relief center The block diagram which showed the collision detection apparatus by Embodiment 3, the emergency call apparatus for vehicles, and the rescue center

<Embodiment 1>
Based on FIG. 1 thru | or FIG. 7, the emergency call apparatus 1 for vehicles and the collision detection apparatus 11 by Embodiment 1 of this invention are demonstrated. A vehicle detection device 1 including the collision detection device 11 and the collision detection device 11 is attached to the right-hand drive vehicle 8. As shown in FIG. 1, the vehicle 8 is provided with a right pillar acceleration sensor 2a, a left pillar acceleration sensor 2b, and a floor acceleration sensor 3a (each corresponding to an impact detection means). The right pillar acceleration sensor 2a and the left pillar acceleration sensor 2b correspond to pillar impact sensors. Hereinafter, the right pillar acceleration sensor 2a, the left pillar acceleration sensor 2b, and the floor acceleration sensor 3a are collectively referred to as acceleration sensors 2a, 2b, and 3a, and the right pillar acceleration sensor 2a and the left pillar acceleration sensor 2b are comprehensively referred to as a pillar acceleration sensor. In some cases, 2a and 2b.
The pillar acceleration sensors 2 a and 2 b are respectively attached to left and right front pillars (A pillars) 8 a located in front of the front seat of the vehicle 8. The pillar acceleration sensors 2a and 2b are respectively the acceleration (front-rear direction acceleration Gx) generated in the front-rear direction of the vehicle 8 (the X-axis direction shown in FIG. 1 and corresponding to the vehicle front-rear direction) and the lateral direction (FIG. 1). It is possible to detect the acceleration (lateral acceleration Gy) generated in the Y-axis direction shown in FIG. In FIG. 1, a thick arrow indicates the direction of acceleration detectable by the pillar acceleration sensors 2a and 2b.

The floor acceleration sensor 3a is attached to the inside of the controller 3 attached to the lower side of the dashboard in front of the driver's seat. The floor acceleration sensor 3a is configured to be able to detect a longitudinal acceleration Gx and a lateral acceleration Gy generated in the vehicle 8. The floor acceleration sensor 3a may include a sensor that can detect the longitudinal acceleration Gx and a sensor that can detect the lateral acceleration Gy independently.
Each of the acceleration sensors 2a, 2b, and 3a detects an impact generated in the vehicle 8 at the time of a collision by detecting acceleration.
The collision detection device 11 according to the present embodiment does not include sensors other than the floor acceleration sensor 3a and the pillar acceleration sensors 2a and 2b (corresponding to other than the pillar impact sensor) in order to detect a collision of the vehicle 8, and the vehicle 8 is not provided with any shock detection means on the front side 8d of the vehicle 8, the driver side door 8b, the passenger side door 8c, the center pillar, and the locker.

Here, generally, a front acceleration sensor (refer to the front acceleration sensor 7 shown in FIG. 10) attached to the front portion 8 d of the vehicle 8 is a crash zone that is a position where the vehicle collides when the vehicle 8 collides. There is a high possibility of breakage because it is placed in. Therefore, as shown in FIG. 3A, the longitudinal acceleration Gx detected by the front acceleration sensor due to the collision of the vehicle 8 becomes undetectable at the time of its rising (indicated by Tin in FIG. 3A). Sometimes. As shown in FIG. 3A, if an acceleration greater than or equal to a predetermined first acceleration threshold Gth1 (corresponding to a predetermined threshold or more) can be detected before the front acceleration sensor is damaged, the operation of the airbag device 4 (described later) is started. Although it is possible, it is not possible to determine the collision type and estimate the occupant's behavior.
On the other hand, as described above, since the pillar acceleration sensors 2a and 2b are respectively attached to the front pillar 8a, the possibility of damage even when the vehicle 8 collides is extremely low. Therefore, as shown in FIG. 3B, the longitudinal acceleration Gx detected by the pillar acceleration sensors 2a, 2b due to the collision of the vehicle 8 is not interrupted midway. Thereby, based on the detection values by the pillar acceleration sensors 2a and 2b, it is possible to start the operation of the occupant protection device such as the airbag device 4 as well as to determine the collision mode and estimate the occupant behavior. It becomes possible.

  Returning to FIG. 1, the vehicle 8 is provided with a communication unit 5 (corresponding to notification means). In the present embodiment, the communication unit 5 is formed of DCM (Data Communication Module), but is not limited to this, and may be a mobile phone or the like. As described above, the communication unit 5 notifies the rescue center 9 based on the signal from the controller 3 when the collision determination unit 3b described later detects that a collision has occurred in the vehicle 8. . The communication unit 5 transmits the transmission signal formed by the controller 3 to the rescue center 9 when reporting.

The controller 3 described above is a control device formed by an input / output device (not shown), a CPU, a RAM, and the like. The controller 3 according to the present embodiment also serves as an airbag ECU of the vehicle 8. As shown in FIG. 2, the pillar acceleration sensors 2 a and 2 b, the communication unit 5, and the airbag device 4 are connected to the controller 3. The airbag device 4 is the same as the conventional type, and is formed by an inflator, a bag, and an ignition device (not shown).
The controller 3 includes a collision determination unit 3b, an airbag driving unit 3c, an acceleration comparison unit 3d, a collision form determination unit 3e, an acceleration integral calculation unit 3f, an occupant damage determination unit 3g, and a combined acceleration vector as configurations other than the floor acceleration sensor 3a. A calculation unit 3h, an occupant behavior estimation unit 3i, and a transmission signal formation unit 3j are provided. The collision determination unit 3b forms the collision detection device 11 together with the pillar acceleration sensors 2a and 2b and the floor acceleration sensor 3a described above.

The collision determination unit 3b (corresponding to a collision determination unit) detects that the vehicle 8 has collided based on detection values by the acceleration sensors 2a, 2b, and 3a.
When the collision determination unit 3b detects that the vehicle 8 has collided, the airbag driving unit 3c supplies the squib current to operate the airbag device 4.
The acceleration comparison unit 3d compares values detected by the acceleration sensors 2a, 2b, and 3a with each other when a collision occurs in the vehicle 8.
The collision form determination unit 3e estimates the collision pattern of the vehicle 8 based on the comparison result by the acceleration comparison unit 3d. The acceleration comparison unit 3d and the collision type determination unit 3e form a collision type determination unit 3m (corresponding to a collision type determination unit).

Hereinafter, based on FIG. 4A thru | or FIG. 4C, the estimation method of the collision pattern of the vehicle 8 by the collision mode determination unit 3m will be described with an example. As shown in FIG. 4A to FIG. 4C, the collision type determination unit 3m detects that the vehicle acceleration is greater than the first acceleration threshold GTh1 by the floor acceleration sensor 3a or the pillar acceleration sensors 2a and 2b. It is determined that a collision has occurred.
Further, as shown in FIG. 4B, the collision mode determination unit 3m is a case where a collision has occurred in the vehicle 8, and a predetermined second acceleration threshold value is obtained by both the right pillar acceleration sensor 2a and the left pillar acceleration sensor 2b. When acceleration larger than GTh2 (GTh1 <GTh2) is detected, it is determined that the vehicle 8 has made a frontal collision.
Further, as shown in FIG. 4C, the collision mode determination unit 3m is a case where a collision occurs in the vehicle 8, and the difference between the detection value by the right pillar acceleration sensor 2a and the detection value by the left pillar acceleration sensor 2b is If it is greater than the predetermined threshold, it is determined that the vehicle 8 has made an offset collision.
Further, as shown in FIG. 4A, the collision mode determination unit 3m is a case where a collision has occurred in the vehicle 8, it is not determined that the vehicle 8 has made a frontal collision, and an offset collision has occurred. When it is not determined, the vehicle 8 determines that a center pole collision has occurred.
The above-described content is an example of a method for estimating the collision pattern of the vehicle 8, and other methods may be used to estimate the collision pattern of the vehicle 8.

Returning to FIG. 2, the acceleration integral calculation unit 3 f calculates the acceleration integral values ∫Gx and ∫Gy by time-integrating the detection values by the pillar acceleration sensors 2 a and 2 b.
The occupant damage determination unit 3g determines damage caused to the occupant due to the collision of the vehicle 8 based on the acceleration integration values ∫Gx and ∫Gy calculated by the acceleration integration calculation unit 3f. The acceleration integration calculation unit 3f and the occupant damage determination unit 3g form an injury damage determination unit 3n (corresponding to injury damage determination means).
The combined acceleration vector calculation unit 3h calculates a combined acceleration vector Gxy representing the direction of acceleration generated in the vehicle 8 based on the detection values by the pillar acceleration sensors 2a and 2b.
The occupant behavior estimation unit 3i estimates the movement direction of the occupant due to the collision of the vehicle 8 based on the combined acceleration vector Gxy calculated by the combined acceleration vector calculation unit 3h. The combined acceleration vector calculation unit 3h and the occupant behavior estimation unit 3i form an occupant behavior estimation unit 3p (corresponding to occupant behavior estimation means).
The transmission signal forming unit 3j forms a transmission signal to be transmitted to the rescue center 9 based on the determination result or the estimation result by the collision determination unit 3b, the collision type determination unit 3m, the injury damage determination unit 3n, and the occupant behavior estimation unit 3p. .
The collision type determination unit 3m, injury damage determination unit 3n, and occupant behavior estimation unit 3p described above constitute a state information formation block 3k (corresponding to state information formation means). The state information formation block 3k forms the state information at the time of the collision of the vehicle 8 described above based on the detection values by the pillar acceleration sensors 2a and 2b. The state information includes the collision pattern of the vehicle 8 estimated by the collision type determination unit 3m, the damage received by the passenger determined by the injury damage determination unit 3n, and the movement direction of the passenger estimated by the passenger behavior estimation unit 3p. It is. The state information formed by the state information forming block 3k is included in the transmission signal described above and transmitted to the rescue center 9.

  Next, a collision detection method and an emergency notification method according to the present embodiment will be described based on the flowcharts shown in FIGS. First, as shown in FIG. 5, the longitudinal acceleration Gx and the lateral acceleration Gy are detected by the acceleration sensors 2a, 2b, 3a (step S101). Next, the collision determination unit 3b determines whether or not a collision has occurred in the vehicle 8 based on the longitudinal acceleration Gx or the lateral acceleration Gy detected by the acceleration sensors 2a, 2b, and 3a (step S102). . If it is determined that no collision has occurred in the vehicle 8, this flow ends. When it is determined in step S102 that a collision has occurred in the vehicle 8, as described above, the collision type determination unit 3m is based on the longitudinal acceleration Gx detected by the acceleration sensors 2a, 2b, and 3a. A collision pattern is estimated (step S103). Thereafter, the airbag device 4 is actuated by the airbag driving unit 3c according to the detected value (step S104). The airbag driving unit 3 c operates the corresponding airbag device 4 based on the estimated collision pattern of the vehicle 8.

  Next, the occupant behavior estimation unit 3p executes occupant behavior determination for estimating the occupant behavior due to the collision of the vehicle 8 based on the longitudinal acceleration Gx and the lateral acceleration Gy detected by the pillar acceleration sensors 2a and 2b ( Step S105). Next, the injury damage determination unit 3n executes the injury level determination for determining the damage caused to the passenger due to the collision of the vehicle 8, based on the longitudinal acceleration Gx and the lateral acceleration Gy detected by the pillar acceleration sensors 2a and 2b. (Step S106). Thereafter, the notification means 5 makes an emergency call to the rescue center 9 (step S107). At the time of an emergency call, a transmission signal including the state information formed by the state information forming block 3k is transmitted to the rescue center 9.

  Next, based on the flowchart shown in FIG. 6, the occupant behavior determination (step S105) processing by the occupant behavior estimation unit 3p described above will be described. The composite acceleration vector calculation unit 3h of the occupant behavior estimation unit 3p calculates a composite acceleration vector Gxy based on the longitudinal acceleration Gx and the lateral acceleration Gy detected by the pillar acceleration sensors 2a and 2b (step S201). The combined acceleration vector Gxy represents the direction of acceleration generated in the vehicle 8 due to the collision. Next, the occupant behavior estimation unit 3i of the occupant behavior estimation unit 3p estimates the movement direction of the occupant due to the collision of the vehicle 8 based on the combined acceleration vector Gxy calculated by the combined acceleration vector calculation unit 3h (step S202). . Specifically, the occupant behavior estimation unit 3i estimates the direction of the combined acceleration vector Gxy as the occupant movement direction.

  Next, based on the flowchart shown in FIG. 7, the process of the injury level determination (step S106) by the injury damage determination unit 3n described above will be described. The acceleration integration calculation unit 3f of the injury damage determination unit 3n time-integrates the longitudinal acceleration Gx and the lateral acceleration Gy detected by the pillar acceleration sensors 2a and 2b to calculate acceleration integrated values ∫Gx and ∫Gy, respectively. (Step S301). Next, the occupant damage determination unit 3g of the injury damage determination unit 3n determines the damage received by the occupant based on the acceleration integration values ∫Gx and ∫Gy calculated by the acceleration integration calculation unit 3f (step S302). Specifically, the calculated acceleration integral values ∫Gx and ∫Gy are compared with the integration threshold value Gv1, and if either of the acceleration integration values ∫Gx or ∫Gy is equal to or greater than the integration threshold value Gv1, When the acceleration integral values ∫Gx and ∫Gy are both less than the integration threshold value Gv1, the occupant suffered little damage (trauma level is low). ) (Step S304).

According to the present embodiment, the pillar acceleration sensors 2a and 2b are respectively attached to the left and right front pillars 8a of the vehicle 8, and detect the longitudinal acceleration Gx and the lateral acceleration Gy. Thus, since the pillar acceleration sensors 2a and 2b are not provided in the crash zone of the vehicle 8, even if the vehicle 8 collides, acquisition of the acceleration detection value may be interrupted due to the damage of the pillar acceleration sensors 2a and 2b. Absent. For this reason, after the collision, the state of the vehicle 8 can be accurately detected based on the detection values of the pillar acceleration sensors 2a and 2b, and the state information of the collision vehicle 8 can be formed.
Further, the detected value can be acquired from the pillar acceleration sensors 2a and 2b until the impact disappears from the occurrence of the collision, and the occupant protection device such as the airbag device 4 can be operated accurately.
Further, since the pillar acceleration sensors 2a and 2b are respectively attached to the left and right front pillars 8a of the vehicle 8, the impact of the collision at the front portion 8d of the vehicle 8 is transmitted via the side surface of the body 8, and As in the case where the front acceleration sensor arranged in the crash zone detects, the impact can be detected with high accuracy.

The pair of pillar acceleration sensors 2a and 2b are formed so as to be able to detect the lateral acceleration Gy. That is, the front pillar 8a to which the pillar acceleration sensors 2a and 2b are attached is an optimal position for detecting both the impact applied to the front portion 8d of the vehicle 8 and the impact applied to the side portion of the vehicle. It is in. Therefore, the pillar acceleration sensors 2a and 2b can be formed so as to detect the lateral acceleration Gy. Thereby, the pillar acceleration sensors 2a and 2b can detect the lateral acceleration Gy without being damaged by the collision, and the state of the vehicle 8 can be accurately detected.
Further, it is not necessary to attach an acceleration sensor or pressure sensor capable of detecting the lateral acceleration Gy to the driver's seat side door 8b, the passenger seat side door 8c, and the like. The sensor mounting process can be simplified.
Further, as the impact detection means, the vehicle 8 includes only the pillar acceleration sensors 2a and 2b and the floor acceleration sensor 3a, the front portion 8d of the vehicle 8, the center pillar, the driver's seat side door 8b, the passenger seat side door 8c, the locker Such an acceleration sensor as an impact detection means is not provided on the side surface of the vehicle 8. Thereby, in the vehicle 8, the mounting space of the acceleration sensor can be further reduced, and the mounting process of the acceleration sensor at the time of manufacturing the vehicle can be further simplified.

Further, the vehicle emergency call device 1 according to the present embodiment includes the above-described collision detection device 11 and a state information forming block 3k that forms state information of the vehicle 8 based on detection values by the pillar acceleration sensors 2a and 2b. When the collision detection device 11 detects that a collision has occurred in the vehicle 8, the communication unit 5 notifies the rescue center 9 and transmits the state information formed by the state information forming block 3k. I have. Thus, after the collision, the state information forming block 3k can form appropriate state information of the vehicle 8 based on the detection values of the pillar acceleration sensors 2a and 2b. Can be transmitted to the rescue center 9. Therefore, the rescue center 9 can accurately perform the rescue work for the vehicle 8.
The vehicle emergency call device 1 includes the state information forming block 3k that forms the state information of the vehicle 8 based on the detection values by the pillar acceleration sensors 2a and 2b, thereby forming the state information. No need for a front camera or indoor camera. Therefore, the operation system of the collision detection device 11 and the vehicle emergency notification device 1 is not complicated, and the operation reliability can be improved.

In addition, the state information forming block 3k includes a collision type determination unit 3m that estimates a collision pattern of the vehicle 8. For this reason, the collision pattern determination unit 3m can accurately determine the collision pattern of the vehicle 8. Therefore, the rescue center 9 can perform the rescue work for the vehicle 8 more accurately.
Further, the state information forming block 3k includes an injury damage determination unit 3n that determines damage caused to the passenger due to the collision of the vehicle 8. For this reason, it becomes possible to determine accurately the damage which the passenger | crew received by the collision of the vehicle 8 by the injury damage determination unit 3n. Therefore, the rescue center 9 can perform the rescue work for the vehicle 8 more accurately.
Further, the injury damage determination unit 3n includes an acceleration integration calculation unit 3f that time-integrates detection values Gx and Gy detected by the pillar acceleration sensors 2a and 2b to calculate acceleration integration values ∫Gx and ∫Gy, and an acceleration integration calculation unit 3f. An occupant damage determination unit 3g that determines damage to the occupant based on the calculated acceleration integration values ∫Gx, ∫Gy. Thereby, the occupant damage determination unit 3g accurately determines the damage caused by the occupant based on the acceleration integration values ∫Gx and ∫Gy calculated by time-integrating the detection values Gx and Gy by the pillar acceleration sensors 2a and 2b. can do.

The state information forming block 3k includes an occupant behavior estimation unit 3p that estimates the occupant behavior due to the collision of the vehicle 8. Therefore, the occupant behavior estimation unit 3p can accurately estimate the occupant behavior due to the collision of the vehicle 8. Therefore, the rescue center 9 can perform the rescue work for the vehicle 8 more accurately.
The occupant behavior estimation unit 3p includes a combined acceleration vector calculation unit 3h that calculates a combined acceleration vector Gxy that represents the direction of acceleration generated in the vehicle 8 based on the detection values Gx and Gy detected by the pillar acceleration sensors 2a and 2b. An occupant behavior estimation unit 3i that estimates the movement direction of the occupant due to the collision of the vehicle 8 based on the combined acceleration vector Gxy calculated by the acceleration vector calculation unit 3h. Accordingly, the occupant behavior estimation unit 3i can accurately estimate the occupant movement direction due to the collision of the vehicle 8 based on the combined acceleration vector Gxy calculated by the combined acceleration vector calculation unit 3h.

<Embodiment 2>
Based on FIG. 8 and FIG. 9, the difference from Embodiment 1 is demonstrated regarding 11 A of collision detection apparatuses and emergency notification apparatus 1A for vehicles by Embodiment 2. FIG. As shown in FIG. 8, in this embodiment, the right door acceleration sensor 6a is attached in the driver's seat side door 8b, and the left door acceleration sensor 6b is attached in the passenger seat side door 8c. Hereinafter, the right door acceleration sensor 6a and the left door acceleration sensor 6b may be collectively referred to as door acceleration sensors 6a and 6b. The door acceleration sensors 6a and 6b (each corresponding to impact detection means) detect the lateral acceleration Gy. Further, the pillar acceleration sensors 2a and 2b according to the present embodiment detect only the longitudinal acceleration Gx. In the present embodiment, the collision determination unit 3b determines the collision of the vehicle 8 based on the detection values of the door acceleration sensors 6a and 6b and the pillar acceleration sensors 2a and 2b, and the state information forming block 3k is Status information is formed (shown in FIG. 9). In FIG. 8, thick arrows indicate the directions of acceleration that can be detected by the pillar acceleration sensors 2a, 2b and the door acceleration sensors 6a, 6b.

  According to this embodiment, the right door acceleration sensor 6a and the left door acceleration sensor 6b attached to the driver's seat side door 8b and the passenger seat door 8b are provided. As a result, it is possible to accurately detect the impact in the lateral direction that occurs when the vehicle 8 collides with the door acceleration sensors 6a and 6b.

<Embodiment 3>
Based on FIG. 10 and FIG. 11, the difference from the above-mentioned Embodiment 2 is demonstrated regarding the collision detection apparatus 11B and the vehicle emergency call apparatus 1B by Embodiment 3. FIG. As shown in FIG. 10, in this embodiment, in addition to the door acceleration sensors 6a and 6b, a front acceleration sensor 7 (corresponding to an impact detection means and a front impact sensor) is attached to the front portion 8d of the vehicle 8. ing. The front part 8d is a part located in front of the engine 8e of the vehicle 8 (shown in FIG. 10). The front acceleration sensor 7 detects the longitudinal acceleration Gx together with the pillar acceleration sensors 2a and 2b. In the present embodiment, the collision determination unit 3b determines the collision of the vehicle 8 based on the detection values of the door acceleration sensors 6a and 6b, the pillar acceleration sensors 2a and 2b, and the front acceleration sensor 7, and the state information forming block 3k is the vehicle. 8 state information at the time of collision is formed (shown in FIG. 11). In FIG. 10, thick arrows indicate directions of acceleration that can be detected by the pillar acceleration sensors 2 a and 2 b, the door acceleration sensors 6 a and 6 b, and the front acceleration sensor 7.

  According to the present embodiment, the front acceleration sensor 7 that is attached to the front portion 8d located in front of the engine 8e of the vehicle 8 and detects the longitudinal acceleration Gx is provided as the impact detection means. Thereby, the collision determination part 3b can detect the collision of the vehicle 8 at an early stage based on the detection value by the front acceleration sensor 7 provided in the crash zone of the vehicle 8, and the airbag device 4 can be operated quickly. On the other hand, based on the detection values of the door acceleration sensors 6a and 6b and the pillar acceleration sensors 2a and 2b that are not easily damaged by a collision, the state information forming block 3k can accurately form the state information at the time of the collision of the vehicle 8. .

<Other embodiments>
The present invention is not limited to the above-described embodiments, and can be modified or expanded as follows.
In all the embodiments described above, an acceleration sensor for rear impact may be provided.
In the second and third embodiments, instead of the door acceleration sensors 6a and 6b, pressure sensors may be attached in the driver's seat side door 8b and in the passenger seat door 8b.
In the third embodiment, a pair of left and right front acceleration sensors 7 may be provided in the front portion 8 d of the vehicle 8.
Further, the vehicle 8 may be provided with the pillar acceleration sensors 2a and 2b in the first embodiment and the front acceleration sensor 7 in the third embodiment without providing the door acceleration sensors 6a and 6b.
Further, instead of the right pillar acceleration sensor 2a, the left pillar acceleration sensor 2b, and the front acceleration sensor 7, a pressure sensor may be provided.

  In the drawings, 1, 1A, 1B are vehicle emergency call devices, 2a is a right pillar acceleration sensor (impact detection means, pillar impact sensor), 2b is a left pillar acceleration sensor (impact detection means, pillar impact sensor), and 3a is a floor. Acceleration sensors (impact detection means), 3b is a collision determination section (collision determination means), 3f is an acceleration integral calculation section, 3g is an occupant damage determination section, 3h is a composite acceleration vector calculation section, 3i is an occupant behavior estimation section, and 3k is State information formation block (state information formation means), 3m is a collision form determination unit (collision form determination means), 3n is an injury damage determination unit (injury damage determination means), 3p is an occupant behavior estimation unit (occupant behavior estimation means), 5 is a communication unit (notification means), 6a is a right door acceleration sensor (impact detection means), 6b is a left door acceleration sensor (impact detection means), Is a front acceleration sensor (impact detection means, front impact sensor), 8 is a vehicle, 8a is a front pillar, 8d is a front part, 8e is an engine, 9 is a relief center, and 11, 11A and 11B are collision detection devices. .

Claims (10)

Impact detection means (2a, 2b, 3a, 6a, 6b, 7) for detecting an impact generated in the vehicle (8);
A collision determination means (3b) for detecting that the vehicle has collided based on a detection value by the impact detection means;
A collision detection device (11, 11A, 11B) comprising:
The impact detection means includes
A collision detection device including a pair of pillar impact sensors (2a, 2b) attached to the left and right front pillars (8a) of the vehicle and detecting an impact (Gx) generated at least in the longitudinal direction of the vehicle.   The collision detection device (11) according to claim 1, wherein each of the pillar impact sensors can detect an impact (Gy) generated in a lateral direction of the vehicle.   The collision detection device (11) according to claim 1 or 2, wherein the impact detection means other than the pillar impact sensor is not provided at a front portion (8d) and a side surface of the vehicle. The impact detection means includes
The collision detection device (11B) according to claim 1 or 2, further comprising a front impact sensor (7) that is attached in front of the engine (8e) of the vehicle and detects an impact generated in a longitudinal direction of the vehicle. A collision detection device according to any one of claims 1 to 4,
State information forming means (3k) for forming state information of the vehicle based on a detection value by the pillar impact sensor;
Notification means for notifying the rescue center (9) and transmitting the state information formed by the state information forming means when the collision detection device detects that a collision has occurred in the vehicle. (5) and
Vehicle emergency call device (1, 1A, 1B). The state information forming means
The emergency notification device for a vehicle according to claim 5, further comprising a collision type determination unit (3 m) for estimating a collision pattern of the vehicle. The state information forming means
The vehicle emergency call device according to claim 5 or 6, further comprising injury damage determination means (3n) for determining damage to a passenger caused by the vehicle collision. The injury damage determination means is
An acceleration integral calculation unit (3f) for calculating an acceleration integral value (∫Gx, ∫Gy) by time-integrating a detection value by the pillar impact sensor;
An occupant damage determination unit (3g) that determines damage to the occupant based on the acceleration integral value calculated by the acceleration integral calculation unit;
The vehicle emergency notification device according to claim 7. The state information forming means
The vehicular emergency notification device according to any one of claims 5 to 8, further comprising occupant behavior estimation means (3p) for estimating occupant behavior due to a collision of the vehicle. The occupant behavior estimation means includes
A combined acceleration vector calculation unit (3h) that calculates a combined acceleration vector (Gxy) representing the direction of acceleration generated in the vehicle based on a detection value by the pillar impact sensor;
An occupant behavior estimating unit (3i) for estimating a moving direction of the occupant due to the collision of the vehicle based on the combined acceleration vector calculated by the combined acceleration vector calculating unit;
The vehicle emergency notification device according to claim 9.

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