JP2006321423A - Mounting state detection device, drive recorder and drive recorder analysis unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mounting state detection device having freedom in mounting to a vehicle. <P>SOLUTION: The mounting state detection device having a vehicle condition information detection means 25 and a gravity detection means 27 and detecting the mounting state relative to the vehicle of the drive recorder 2 for memorizing the vehicle condition information detected by the vehicle condition information detection means 25 before and after the impact generated on the vehicle has a relationship information taking-in means P1 for taking-in relationship information for indicating the relationship in a detection reference direction of each of the drive recorder 2 in the reference mounting state relative to the vehicle of the drive recorder 2 and the gravity detection means 27; a gravity information taking-in means P2 for taking-in the gravity information detected by the gravity detection means 27 attached to the drive recorder 2; and a mounting state detection means P3 for comparing the taken-in relationship information with the gravity information and detecting the mounting state relative to the vehicle of the drive recorder 2 based on the comparison result. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an attachment state detection device, a drive recorder, and a drive recorder analysis unit, and more specifically, detects an attachment state of the drive recorder that stores vehicle state information detected before and after an impact generated in the vehicle. The present invention relates to an attachment state detection device, a drive recorder having the attachment state detection device, and a drive recorder analysis unit.

  In recent years, a drive recorder that stores vehicle status information before and after an accident (forward image, vehicle speed, sudden acceleration / deceleration, etc.) can be an effective means to prevent an automobile accident. Introduction has begun. For example, a drive recorder mounted on a commercial vehicle such as a taxi or a bus is a traveling image showing a front image at the time of an accident or a sudden braking and a driving operation (brake operation, turn signal operation, travel route, etc.) status of the driver. The data can be stored. In addition to the functions described above, there is also known a high-function type drive recorder in which a video channel for storing the interior of a vehicle is added.

  The drive recorder described above incorporates a CCD (Charge Coupled Device) camera, an acceleration sensor, and a card-like storage medium (hereinafter also referred to as a card). And always memorize the front image of the vehicle and the surrounding situation from the driver's viewpoint (field of view), and when receiving an impact (0.4G or more) such as an accident or a sudden brake or sudden handle, The image and the running data for a predetermined time before and after the impact such as a total of 18 seconds such as 12 seconds before the impact and 6 seconds after the impact are stored in the card.

  When an accident occurs, it is possible to clearly testify the driver's legitimacy based on the vehicle status information stored in the card. In addition, when the drive recorder detects a rough and dangerous driving operation such as a sudden handle or a sudden brake, it may give a certain tension to the driver by alerting the driver with a warning sound or the like. it can.

As such a drive recorder, a method has been proposed in which image information and operation information of an image pickup means are stored in a storage means at the same time, and the information is saved by the operation of a collision sensor caused by an accident. Then, by reproducing the stored image information, it has been possible to verify, for example, whether there was a side-by-side driving or a drowsy driving (see Patent Document 1).
JP 2000-6854 A

  However, when the drive recorder described above is attached to a windshield of a vehicle, the inclination of the windshield differs depending on the type of the vehicle. Therefore, when there is only one attachment method, there is a problem that the drive recorder cannot be attached. It was. For this reason, there has been a demand for a drive recorder having an attachment structure that allows the angle and the attachment in the left-right direction to the windshield or the like to be freely set. Further, when the card for storing image information or the like is detachably attached to the vehicle drive recorder, there is a problem that the card cannot be attached / detached in a vehicle having a large windshield tilt.

  Therefore, in view of the above-described problems, an object of the present invention is to provide an attachment state detection device, a drive recorder, and a drive recorder analysis unit that can have a degree of freedom in attachment to a vehicle.

  In order to solve the above problems, the mounting state detecting device according to claim 1 according to the present invention detects vehicle status information indicating vehicle status when the vehicle is running as shown in the basic configuration diagram of FIG. It has information detection means 25 and gravity detection means 27 for detecting gravity information indicating gravity, and stores the vehicle situation information detected by the vehicle situation information detection means 25 before and after the impact generated on the vehicle. An attachment state detection device for detecting the attachment state of the drive recorder 2 to the vehicle, wherein each of the vehicle status information detection means 25 and the gravity detection means 27 in the reference attachment state of the drive recorder 2 to the vehicle is provided. The relationship information capturing means P1 for capturing the relationship information indicating the relationship of the detection reference direction and the gravity detecting means 27 mounted on the drive recorder 2 are detected. Gravity information fetching means P2 for fetching gravity information, relation information fetched by the relation information fetching means P1 and gravity information fetched by the gravity information fetching means P2 are compared, and based on the comparison result, It has attachment state detection means P3 which detects the attachment state with respect to the said vehicle of the drive recorder 2, It is characterized by the above-mentioned.

  According to the mounting state detection device 2 ′ of the present invention described in claim 1, the vehicle status information detecting means 25 in the reference mounting state of the drive recorder 2 according to the completion of the mounting operation of the drive recorder 2 to the vehicle, etc. Relation information indicating the relation of each detection reference direction with the gravity detection means 27 is taken in by the relation information taking means P1. And gravity information is taken in by gravity information taking-in means P2 from gravity detecting means 27 with which drive recorder 2 was equipped. And the attachment state with respect to the vehicle of the drive recorder 2 based on the comparison result of this gravity information and relationship information is detected by the attachment state detection means P3.

  In order to solve the above-mentioned problem, the invention described in claim 2 is that, as shown in the basic configuration diagram of FIG. The camera has a camera for imaging the vehicle situation, and the relation information is configured such that a detection reference direction of the vehicle situation information detection means 25 is an imaging direction of the camera. .

  According to the mounting state detection device 2 ′ of the present invention described in claim 2, the relationship information indicating the relationship between the imaging direction of the camera in the drive recorder 2 and the detection reference direction of the gravity detection means 27 is the relationship information capturing means P1. Is taken in by. And the attachment state with respect to the vehicle of the drive recorder 2 based on the comparison result of this relationship information and the acquired gravity information is detected by the attachment state detection means P3.

  In order to solve the above-mentioned problem, the drive recorder according to claim 3 according to the present invention, as shown in the basic configuration diagram of FIG. 1, detects vehicle status information indicating vehicle status information when the vehicle travels. The drive recorder 2 having the means 25 and storing the vehicle situation information detected by the vehicle situation information detection means 25 before and after the impact generated on the vehicle, the attachment state detection device 2 according to claim 1 or 2. And gravity detecting means 27 for detecting gravity information indicating the direction of gravity, and based on the mounting state of the drive recorder 2 detected by the mounting state detecting means P3 of the mounting state detecting device 2 ′. If it is determined that the vehicle situation information detected by the vehicle situation information detection means 25 needs to be corrected, the vehicle situation information corresponding to the detection reference direction is corrected. To and stored, or, characterized in that the mounting state information indicating the mounting state of said attachment state detection means P3 is detected and configured to store in association with the vehicle status information information.

  According to the drive recorder 2 of the present invention described in claim 3, when the mounting state of the drive recorder 2 with respect to the vehicle is detected by the mounting state detection device 2 ', the vehicle state information detecting means 25 is based on this mounting state. It is determined whether or not the vehicle status information detected by is necessary. When it is determined that correction is necessary, the vehicle status information detected by the vehicle status information detection means 25 is corrected and stored so as to correspond to the detection reference direction in the drive recorder based on the mounting state. . Alternatively, the attachment state information indicating the attachment state is stored in association with the vehicle state information detected by the vehicle state information detection unit 25.

  In order to solve the above-mentioned problem, the invention according to claim 4 is the drive recorder 2 according to claim 3, as shown in the basic configuration diagram of FIG. A holding member that is held in an attachment state selected from the attachment states and is fixed to the vehicle is further included, and the relation information includes the vehicle status information detection means 25 and the gravity in the reference attachment state of the housing. It is configured to show the relationship of each detection reference direction with the detection means 27, and based on the relationship information, the attachment state detection device 2 ′ detects the attachment state of the housing with respect to the vehicle. Features.

  According to the drive recorder 2 of the present invention described in claim 4, the casing is held by the holding member in a mounting state selected from a plurality of mounting states such as up, down, left and right directions, and held in this state. The member is fixed to the vehicle. Then, the mounting state of the housing with respect to the vehicle is detected by the mounting state detection device 2 ′ based on the relationship information indicating the relationship between the detection reference directions of the vehicle status information detecting means 25 and the gravity detecting means 27 in the housing. The

  The drive recorder analysis unit according to claim 5, which is made according to the present invention to solve the above problem, detects vehicle status information indicating vehicle status when the vehicle is running, as shown in the basic configuration diagram of FIG. 1. The vehicle status information detected by the vehicle status information detection means 25 before and after the impact generated on the vehicle, and the information detection means 25 and gravity detection means 27 for detecting gravity information indicating the direction of gravity. Drive recorder analysis that supports the analysis of the cause of the impact and the like by taking in the stored vehicle status information and the gravity information from the drive recorder 2 that stores the gravity information detected by the gravity detecting means in association with each other The apparatus further comprises an attachment state detection device 2 ′ according to claim 1 or 2, and the gravity information capturing means P2 is included in the vehicle status information. The vehicle status information detecting means is configured to take in the gravity information stored in association and based on the mounting state of the drive recorder 2 detected by the mounting state detecting means P3 of the mounting state detecting device 2 ′. When it is determined that the vehicle status information detected by the vehicle 25 needs to be corrected, the vehicle status information corresponding to the detection reference direction is corrected.

  According to the drive recorder analysis unit of the present invention described in claim 5, the gravity information stored in association with the vehicle situation information by the drive recorder 2 is taken in, and the attachment state of the drive recorder 3 to the vehicle is determined as the attachment state detection device 2. If it is detected by ', it is determined whether or not the vehicle status information detected by the vehicle status information detecting means 25 needs to be corrected based on this attachment state. If it is determined that correction is necessary, the vehicle status information detected by the vehicle status information detection means 25 is corrected based on the attachment state so as to correspond to the detection reference direction in the drive recorder, and the correction is performed. Analysis of accident occurrence is supported based on the vehicle status information.

  As described above, according to the mounting state detecting device of the present invention described in claim 1, the relationship information indicating the detection reference directions of the vehicle status information detecting means and the gravity detecting means in the reference mounting state of the drive recorder. In addition, the gravity information detected by the gravity detection means of the drive recorder is captured, and the mounting state of the drive recorder to the vehicle is detected based on these information. Even if it is attached in a state, the attachment state can be grasped by the attachment state detection device, so that even if the attachment state changes according to the type of the vehicle or the like, accurate stored contents can be obtained from the drive recorder. Therefore, since the drive recorder can be attached to various places in vehicles of different vehicle types, it is possible to give a degree of freedom to the attachment of the drive recorder to the vehicle.

  According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, since the imaging direction of the camera is set as the detection reference direction, the drive recorder is attached to the vehicle in various attachment states. Even if the drive recorder is captured, the direction of the drive recorder can be detected accurately, so if the drive recorder mounting state changes depending on the type of vehicle, etc., the camera will assist in correcting images captured in different imaging directions. can do. Therefore, it is possible to provide a degree of freedom in mounting the drive recorder having the camera to the vehicle.

  As described above, according to the drive recorder of the present invention described in claim 3, it is necessary to provide an attachment state detection device to detect the attachment state with respect to the vehicle, and to correct the vehicle state information based on the attachment state. Since the vehicle situation information is corrected and stored so as to be the detection reference direction in the drive recorder, even if the mounting state changes depending on the type of vehicle, the detection reference direction is common. Vehicle status information can be stored. Alternatively, when it is determined that correction of the vehicle state information is necessary, the attachment state information indicating the attachment state is stored in association with the vehicle state information, so that the vehicle state information stored by the attachment state information Since it is possible to recognize that the detection reference directions are different, it is possible to support correction of vehicle status information at the time of analysis or output of vehicle status information. Therefore, since the drive recorder can be attached to various places in vehicles of different vehicle types, it is possible to give a degree of freedom to the attachment of the drive recorder to the vehicle.

  According to the invention of claim 4, in addition to the effect of the invention of claim 3, the holding member holds the housing of the drive recorder in a mounting state selected from a plurality of mounting states and is fixed to the vehicle. Since the mounting state detection device detects the mounting state of the housing with respect to the vehicle, the holding member can fix the housing with respect to the vehicle in a plurality of mounting states. Since the drive recorder can be attached to various locations in the vehicle of this type, it is possible to give a further degree of freedom to the attachment to vehicles of different vehicle types.

  As described above, according to the drive recorder analysis unit of the present invention described in claim 5, the vehicle to be analyzed based on the mounting state is provided by detecting the mounting state of the drive recorder with respect to the vehicle by providing the mounting state detecting device. When it is determined that the situation information needs to be corrected, the vehicle situation information is corrected so that it is in the detection reference direction in the drive recorder, so even if the mounting state changes depending on the type of vehicle, etc. It is possible to support the analysis of the occurrence of an accident with vehicle status information having a common reference direction. Therefore, since the drive recorder can be attached to various places in vehicles of different vehicle types, it is possible to give a degree of freedom to the attachment of the drive recorder to the vehicle.

  Hereinafter, an embodiment of a drive recorder system using an attachment state detection device, a drive recorder, and a drive recorder analysis unit according to the present invention will be described with reference to the drawings of FIGS.

  2 is a system configuration diagram showing an example of the configuration of the drive recorder system, FIG. 3 is a diagram showing an example of mounting the drive recorder of FIG. 2 on the windshield of the vehicle, and FIG. 4 is a drive diagram of FIG. 5 is a front view of the recorder, FIG. 5 is a top view of the drive recorder of FIG. 2, FIG. 6 is a block diagram showing an example of a schematic configuration of the drive recorder of FIG. 2, and FIG. FIG. 8 is a block diagram showing an example of a schematic configuration of a unit, FIG. 8 is a flowchart showing an example of a processing outline according to the present invention executed by the CPU of FIG. 6, and FIG. 9 shows the present invention executed by the CPU of FIG. It is a flowchart which shows an example of the analysis assistance process which concerns.

  As shown in FIG. 2, the drive recorder system 1 is provided in a drive recorder 2 mounted on a vehicle such as a freight transport truck or a taxi, and a company or sales office that owns the vehicle. And a drive recorder analysis unit 5 that supports analysis of the storage contents stored in the card-like storage medium (card) C.

  The card C uses a memory card such as Compact Flash, for example. As is well known, the card C includes a memory that does not lose its stored contents even if it is not energized, and a controller circuit that handles external input / output. Yes. For the card C, various types of memory cards can be used depending on the system configuration.

  As shown in FIGS. 3 to 5, the drive recorder 2 is attached to the inner surface of the windshield 3 of the vehicle at substantially the same position as a rearview mirror (not shown) so as not to obstruct the driver's view. It is done. The drive recorder 2 includes a housing 20A formed in a substantially rectangular parallelepiped box shape, and a holding member 20B that is fixed to the vehicle in a plurality of attachment states in which the housing 20A is held at a desired angle. is doing.

  The holding member 20B has a width smaller than that of the housing 20A and a substantially U-shaped cross section. The holding member 20B has a pair of locking pieces 20B1 and 2 that sandwich the housing 20A, and the locking pieces 20B1 and 20B1. And a connecting portion 20B3 for connecting the two. Then, a disc-shaped fixing member 20C is attached to the locking piece 20B1 from the windshield 3 via a connecting member 20D formed in a substantially rod shape, and this fixing member 20C is attached to the windshield 3 by, for example, a double-sided tape. The holding member 20B is fixed to the windshield 3 by being fixed by an adhesive or the like.

  The locking piece 20B1 is formed with a slide groove 20E along the X direction (the traveling direction of the vehicle) in FIG. 3, so that the contact member 20F contacting the housing 20A can slide on the slide groove 20E. Is provided. Further, the locking piece 20B2 corresponding to the lower side in the Y direction (gravity direction) in FIG. 3 is provided with a fixing knob 20G for fixing the housing 20A to the holding member 20B, and is in contact with the fixing knob 20G. The housing 20A is fixed with the member 20F so as to be held at a desired angle.

  The housing 20A is provided with an openable / closable lid 20A1 that covers a card insertion portion 28 into which a card C to be described later is inserted. When the lid 20A1 is open, the slot of the card insertion portion 28 and an eject button are provided. Becomes visible from the outside, and the card insertion portion 28 becomes invisible from the outside in the closed state of the lid 20A1. In the best mode, when storing the vehicle status information detected before and after the impact generated on the vehicle in the card (storage medium) C that is detachable from the housing 20A, the holding member 20B holds the lid portion 20A1. The casing 20A is held so as not to be covered, that is, so as not to prevent the card C from being attached to and detached from the casing 20A.

  On one surface of the housing 20A in the X direction, a part of a lens of a camera 25 to be described later protrudes, and a tapered portion 20B4 that covers the protruding portion is formed on the connecting portion 20B3 so that the camera 25 can take an image. Yes. The tapered portion 20B4 gradually decreases in diameter toward the X direction in a conical shape, and the tip portion is an opening. The camera 25 has a structure that images the front of the vehicle in the X direction from the opening.

  In this best mode, the case where the taper portion 20B4 is formed in the connecting portion 20B3 will be described. However, there are various differences such as providing a simple opening in the connecting portion 20B3 and providing a fitting hole for fitting the protruding portion of the camera 25. It can be in the form.

  Further, the casing 20A is provided with a power cable 20H for supplying power to the drive recorder 2, and the power cable 20H is routed along the windshield 3. In addition, a cap 20K that covers a connector for connecting a cable from a sub camera 26, which will be described later, is detachably attached to the housing 20A so as to take an image of the inside of the vehicle, a driver, and the like. The cap 20K is removed when the sub camera 26 is installed.

  The housing 20A is detachably provided with a connection cap 20L that covers a connection portion such as a USB (Universal Serial Bus) for connection to an external device, so that the drive recorder 2 can be connected to a personal computer or the like. Connection is possible, and various settings of the drive recorder 2 can be made.

  Next, an example of a method for attaching the drive recorder 2 to the windshield 3 will be described below. First, the mounting direction of the housing 20A is determined in consideration of the inclination of the windshield 3 of the vehicle. Specifically, when the inclination of the windshield 3 is small, that is, the distance between the cover 20A1 of the housing 20A and the windshield 3 is large, and there is no problem in removing the card C from the card insertion portion 28. The mounting direction of the housing 20A is determined so that the lid 20A1 is on the upper side in the Y direction and the camera 25 can capture images in the X direction. On the other hand, when the inclination of the windshield 3 is large, that is, when the distance between the cover 20A1 of the housing 20A and the windshield 3 is short and it is difficult to remove the card C from the card insertion portion 28, the cover 20A1 The mounting direction of the housing 20 </ b> A is determined so that it is on the lower side in the Y direction and the camera 25 can capture images in the X direction.

  Note that the attachment of the housing 20A to the holding member 20B is the same in the basic attachment method except that the housing 20A is different in the vertical direction. Therefore, the case where the lid portion 20A1 is on the upper side in the Y direction will be described below. explain.

  The holding member 20 </ b> B is fixed to the windshield 3 by fixing the fixing member 20 </ b> C to a desired position of the windshield 3. Then, the housing 20A is brought into contact with the contact member 20F of the locking piece 20B1 of the holding member 20B, and the contact member 20F is slid so that the imaging range of the camera is optimized in this state. By turning the fixing knob 20G in this state, the housing 20A is fixed by the fixing knob 20G and the contact member 20F so as to be held at a desired angle.

  As described above, in the best mode, the camera 25 of the housing 20A is used as the holding member 20B that holds the housing of the drive recorder 2 in a mounting state selected from a plurality of mounting states and is fixed to the vehicle. The housing 20 </ b> A can be mounted upside down with the X facing in the X direction. That is, when the cover 20A1 for mounting the card C is in the upper direction in the Y direction, the first mounting state, which is the reference mounting state, is used, and when the windshield 3 is inclined and the card C is difficult to attach and detach, the lid 20A1. A description will be given of a configuration in which the housing 20 </ b> A is mounted in the second mounting state so as to be downward in the Y direction.

  Note that the holding member 20B can have various different forms such as a form in which the housing 20A is changed in the vertical and horizontal directions to select an arbitrary mounting state from the four mounting states. Further, the case where the holding member 20B sandwiches the upper surface and the lower surface of the housing 20A in the Y-axis direction will be described. Various holding methods such as a sandwiching configuration can be used.

  Next, an example of the configuration of the drive recorder 2 described above will be described. As shown in FIG. 6, the drive recorder 2 includes a central processing unit (CPU) 21 that performs various processes and controls according to a predetermined program, and a ROM 22 that is a read-only memory that stores programs for the CPU 21. The RAM 23 is a readable / writable memory that stores various data and has an area necessary for the processing operation of the CPU 21.

  The CPU 21 is connected to an electrically erasable / rewritable read-only memory 24 that can retain stored contents even while the apparatus main body is in an off state. This memory 24 is a vehicle such as an image captured by a camera. It has a temporary storage area for storing status information in a time-series over a predetermined range.

  The drive recorder 2 further includes a camera 25, a sub camera 26, an acceleration sensor 27, a card insertion unit 28, and the like. Each of the camera 25 and the sub camera 26 is connected to the CPU 21 via interface circuits (I / F) 25i and 26i.

  The camera 25 corresponds to vehicle status information detection means in the claims, and various cameras such as a CCD (Charge Coupled Device) camera, a digital camera, a video camera, and an infrared camera can be used. The camera 25 continuously captures a front image of the vehicle, and the captured image signal is converted and compressed by the interface circuit 25i and input to the CPU 21 as image information.

  As described above, the sub camera 26 is selectively installed outside the housing 20 </ b> A, and various cameras can be used similarly to the camera 25. When this sub-camera 26 is also installed, the inside of a commercial vehicle, a driver, etc. are always imaged, and the captured image signal is also converted and compressed by the interface circuit 26i, and image Information is input to the CPU 21.

  The acceleration sensor 27 uses a triaxial acceleration sensor that detects acceleration, inclination, impact, etc. in the triaxial (X, Y, Z) directions. As is well known, the triaxial acceleration sensor supports a weight by a thin silicon beam (beam), the weight is moved by acceleration, the beam is distorted, and this distortion is applied to a piezoresistive element or the like formed on the beam. The acceleration is detected by resistance change. Then, the acceleration sensor 27 outputs an acceleration signal indicating the detected acceleration to the CPU 21.

  In the present best mode, the acceleration sensor 27 is functioned as the gravity detecting means in the claims, and the acceleration sensor 27 detects the gravity based on the gravitational acceleration in the Z direction. If possible, other sensors such as a geomagnetic sensor can be used.

  The card insertion unit 28 writes and reads various data designated by the CPU 21 with respect to the loaded card C. The card C is manually inserted into the insertion unit 28, and the card C is discharged. A discharge mechanism (not shown) in the card insertion unit 20 is automatically performed according to the key operation.

  In the best mode, a case will be described in which various types of information are stored in the card C in response to detection of an impact such as an accident, sudden braking, or sudden steering. However, the present invention is not limited to this, and the memory 24 is not limited thereto. It is possible to adopt various forms such as storing the data in a network or transmitting to a predetermined transmission destination using a communication device.

  The drive recorder 2 further includes an interface unit 29, and the interface unit 29 is connected to the CPU 21. A vehicle speed sensor 31 is connected to the interface unit 29, and a speed signal corresponding to the vehicle speed output from the speed sensor 31 is input to the CPU 21. And this speed signal is detected and memorize | stored by CPU21 as one item in the vehicle condition information. Depending on the configuration contents of the vehicle status information stored in the card C, various signals such as the vehicle brake, turn, and steering angle can be input from the vehicle to the CPU 21 via the interface unit 29.

  Next, the drive recorder analysis unit 5 described above uses a well-known personal computer (personal computer) 50. As shown in FIG. 7, the personal computer 50 controls the operation of the entire apparatus according to a predetermined program. A central processing unit (CPU) 50a for performing The CPU 50a is a readable / writable memory having a ROM 50b, which is a read-only memory storing a program for the CPU 50a via the bus B, and a work area for storing various data necessary for processing operations of the CPU 50a. A certain RAM 50c is connected.

  A storage device 50d is further connected to the CPU 50a via a bus B, and a hard disk device or the like is used as the storage device 50d. The storage device 50d stores a program file in which an analysis support processing program for causing the CPU 50a (computer) to function as the drive recorder analysis unit 5 is stored.

  The CPU 50a further includes an input device interface (I / F) 50e, a display device interface (I / F) 50f, a reader / writer interface (I / F) 50g, and a printer interface (I / F) 50h via the bus B. It is connected.

  When an input device 51 having a keyboard and a mouse is connected to the input device I / F 50e, various input data input from the input device 51 are supplied to the bus B and input to the CPU 50a.

  A display device 52 configured using a CRT, a liquid crystal display, or the like is connected to the display device I / F 50f. And this display apparatus I / F50f controls the display content of the display apparatus 52 based on the instruction | indication from CPU50a.

  A reader / writer 53 having a slot 53a for inserting / ejecting the card C is connected to the reader / writer I / F 50g. The card C loading state and read data input from the reader / writer 53 to the reader / writer I / F 50g are input to the CPU 11a via the bus B. Further, when various data such as data to be written and ejection request data for the card c are input from the CPU 11a to the reader / writer I / F 50g via the bus B, these data are output to the reader / writer 53, whereby the reader / writer 53 performs writing of data, ejection of the card C, and the like.

  A well-known printer 54 is connected to the printer I / F 50h, and the printer 54 prints on various types of information designated by the CPU 50a.

[First best mode]
Next, a case where the mounting state detection device of the present invention is realized by the drive recorder 2 described above will be described.

  The ROM 22 of the drive recorder 2 causes the CPU 21 (computer) to function as the related information fetching means, the gravity information fetching means, and the mounting state detecting means described in the claims, and the drive recorder 2 detects the mounting state. Various programs for realizing the apparatus are stored. Furthermore, in the first best mode, it is necessary to correct the vehicle status information detected by the vehicle status information detecting means based on the mounting status of the drive recorder 2 detected by the mounting status detecting means of the mounting status detecting device. If it is determined that there is a program stored in the card C, the vehicle status information corresponding to the detection reference direction is corrected and stored.

  In the memory 24, the imaging direction of the camera (vehicle status information detecting means) 25 in the first mounting state (reference mounting state) of the housing 20A of the drive recorder 2 (for example, the X direction in which the vehicle moves forward is positive, etc.) Relationship information indicating the relationship with the detection reference direction (for example, the Y direction is positive) of the acceleration sensor (gravity detection means) 27 is stored in advance. That is, the relationship information includes a threshold value, a setting range, and the like for determining the first attachment state and the second attachment state described above from image information from the camera 25 and acceleration information (gravity information) from the acceleration sensor 27. It has become.

  In addition, about the relationship information, after completion | finish of attachment with respect to the vehicle of the drive recorder 20, it can be set as various forms, such as making it set from an external setting device, providing an operation key, and setting.

  Next, an example of a processing outline according to the present invention executed by the CPU 21 of the drive recorder 2 will be described with reference to a flowchart of FIG.

  When power is supplied via the power cable 20H and the CPU 21 is activated, and initial processing is executed in step S1, predetermined initial values are set in various areas of the RAM 23, and step S2 (retrieve relation information) is executed. Means), the related information is fetched from the memory 24 and stored in the RAM 23. Thereafter, the process proceeds to step S3. It should be noted that the related information can be captured in various forms such as by capturing from the outside of the drive recorder 2 by communication or the like as necessary.

  In step S3 (gravity information fetching means), when the acceleration signal output from the acceleration sensor 27 is input, the acceleration signal indicates acceleration information indicating acceleration, inclination, impact, etc. in three axes (X, Y, Z) directions. Is stored in the memory 24 in time series, and the acceleration, inclination, impact, etc. in the Z direction are taken in as gravity information indicating the direction of gravity and stored in the memory 24 in time series, and then the process proceeds to step S4. .

  In step S4 (vehicle condition information detecting means), the image signal indicating the front image of the vehicle input from the camera 25, the image signal indicating the image of the inside of the vehicle and the driver input from the sub camera 26, and the memory 24 are stored. Acceleration information and a speed signal input from the vehicle sensor 31 via the interface unit 29 are captured, and when vehicle status information indicating the vehicle status when the vehicle is running is detected based on these acceleration information, The vehicle status information is stored in time series in the memory 24, and then the process proceeds to step S5.

  In this best mode, the vehicle status information includes, for example, vehicle information such as a front image, vehicle speed, travel information related to vehicle travel such as sudden acceleration / deceleration, a driver's image, an image inside a business vehicle, and the like. And occupant information related to the occupant. The vehicle status information can be configured with only passenger information as occupant information as an option, and it can also be configured with a plurality of information necessary to grasp the vehicle status at the time of the accident. You may make it do.

  In step S5 (attachment state detection means), the relation information captured in the memory 24 is compared with the gravity information, and the attachment state of the drive recorder 2 with respect to the vehicle is detected based on the comparison result. The data is stored in the RAM 23, and then the process proceeds to step S6. In addition, as an example of detection of the attachment state, when the gravity direction indicated by the gravity information is the positive direction of gravity indicated by the related information, the first attachment state, and when the gravity direction is the negative direction, the second attachment state. It detects that it is.

  In step S6, it is determined whether correction is necessary based on the comparison result between the attachment state information of the RAM 23 and the determination condition corresponding to the predetermined relationship information. If it is determined that correction is not necessary (N in S6), it is regarded as the reference first attachment state, and the process proceeds to step S9. On the other hand, when it is determined that correction is necessary (Y in S6), it is considered that the second attachment state is set, and the process proceeds to step S7.

  In step S7, the vehicle state information stored in the memory 24 is corrected so as to be reversed left and right. In step S8, the gravity information stored in the memory 24 is corrected so as to be reversed left and right, and then the process proceeds to step S9. .

  In step S9, it is determined whether or not an impact has occurred based on a comparison result between the vehicle situation information stored in the memory 24 and a determination condition set in advance for determining the occurrence of the impact. In this best mode, when a predetermined impact (0.4 G or more) is detected based on acceleration acceleration, deceleration, turning, etc. according to the determination condition, and a time after collision (several seconds or the like) has elapsed. Judgment conditions are such that it is considered that an impact has occurred.

  If it is determined in step S9 that no impact has occurred (N in S9), the process returns to step S3 and a series of processes are repeated. On the other hand, if it is determined that an impact has occurred (Y in S9), the process proceeds to step S10.

  In step S10, vehicle status information corresponding to a predetermined time before and after the collision is extracted from the memory 24, and writing of this information to the card C is instructed to the card insertion unit 28, and the vehicle status information is transmitted to the card C. When it is stored and the saving process ends, the process proceeds to step S11.

  In step S11, as in step S10, gravity information corresponding to a predetermined time before and after the collision is extracted from the memory 24, and the card insertion unit 28 is instructed to write this information to the card C. When the gravity information is stored and the saving process ends, the process ends.

  Next, an example of the operation (action) of the drive recorder system 1 according to the first best mode configured as described above will be described below.

  The drive recorder 2 is in the second attachment state, that is, is held by the holding member 20B so that the housing 20A is inverted, and the holding member 20B is fixed to the windshield 3 of the vehicle, thereby It is attached to the windshield 3.

  When the drive recorder 2 is activated in response to power supply, the drive recorder 2 takes in gravity information and vehicle status information, compares them and detects that the second mounting state is detected, and determines that correction is necessary. Then, the gravitational information and the vehicle status information taken in are corrected so as to correspond to the detection reference direction in the drive recorder 2, that is, to correspond to the first attachment state. Then, when an impact generated on the vehicle is detected based on the corrected vehicle status information, the vehicle status information and the gravity information captured within a predetermined time before and after the collision are stored in the card C.

  When the card C is removed from the drive recorder 2 and brought into a company, sales office, police station or the like that owns the vehicle, the drive recorder analysis unit 5 takes in the vehicle status information stored in the card C, and the vehicle The image data included in the situation information is reproduced and displayed on the display device 52, or the impact generated in the vehicle is analyzed based on the vehicle situation information, and the result is displayed on the display device 52.

  When the drive recorder 2 detects that the drive recorder 2 is attached to the vehicle in the first attachment state, the detected vehicle status information is stored in the memory 24 without correction, and in response to the occurrence of an impact, The vehicle status information is stored and stored in the card C.

  As described above, according to the drive recorder 2 of the present invention, when the mounting state with respect to the vehicle is detected and it is determined that correction of the vehicle state information is necessary based on the mounting state, the vehicle state information is stored in the drive recorder 2. Therefore, even if the mounting state changes according to the type of the vehicle or the like, it is possible to store the vehicle status information having the same detection reference direction. Therefore, since the drive recorder can be attached to various places in vehicles of different vehicle types, it is possible to give a degree of freedom to the attachment of the drive recorder to the vehicle.

  Further, the holding member 20B holds the housing 20A of the drive recorder 2 in the mounting state selected from the two mounting states and fixes it to the vehicle windshield 3, and detects the mounting state of the housing 20A with respect to the vehicle. Since it did in this way, it becomes possible by this holding member 20B to fix the housing | casing 20A with respect to a vehicle in two attachment states, and since the drive recorder 2 can be attached to the various places in the vehicle of a different vehicle type. Further, it is possible to give a further degree of freedom to attachment to vehicles of various types of vehicles.

  Further, since the housing 20A is held by the holding member 20B so that the drive recorder 2 does not prevent the card (storage medium) C for storing vehicle status information from being attached to and detached from the housing 20A, the housing in the vehicle Since it becomes possible to fix the holding member 20B to an attachment location where the card C can be attached / detached from the 20A, and even if the vehicle type is different, it is possible to prevent the card C from being attached / detached from the housing 20A. Further flexibility can be given to attachment to vehicles of different types of vehicles.

  In the first best mode described above, the case where the drive recorder 2 corrects the detected vehicle status information when the drive recorder 2 is attached to the vehicle in the second attachment state has been described. However, the present invention is not limited to this. The mounting state information indicating the mounting state detected by the drive recorder 2 is stored in the card C or the like in association with the vehicle state information, and the drive recorder analysis unit 5 side based on the mounting state information. It is possible to adopt various forms such as determining the necessity of correction and correcting and using the vehicle situation information when it is determined to be necessary.

  According to the drive recorder 2 configured as described above, when it is determined that the correction of the vehicle situation information is necessary, the attachment state information indicating the attachment state is stored in association with the vehicle situation information. Since it is possible to recognize that the detection reference direction of the stored vehicle status information is different depending on the information, it is possible to support correction of the vehicle status information at the time of analysis or output of the vehicle status information. Therefore, since the drive recorder can be attached to various places in vehicles of different vehicle types, it is possible to give a degree of freedom to the attachment of the drive recorder to the vehicle.

[Second best mode]
Next, the case where the mounting state detection apparatus of the present invention is realized by the drive recorder analysis unit 5 described above will be described.

  The storage device 50d of the personal computer 5 is attached by the personal computer 5 with the CPU 50a (computer) functioning as the related information fetching means, the gravity information fetching means, and the mounting status detection means of the mounting state detecting device in the claims. Various programs for realizing the state detection device are stored. Furthermore, in the second best mode, the gravity information capturing means is configured to capture gravity information stored in association with the vehicle status information, and the mounting state detecting means of the mounting state detecting device. If it is determined that correction of the vehicle situation information detected by the vehicle situation information detection means is necessary based on the mounting state of the drive recorder detected by the vehicle recorder, the vehicle situation information corresponding to the detection reference direction is corrected. Then, an analysis support process program for executing the analysis support process shown in FIG. 9 for supporting the analysis of the occurrence of the accident is stored.

  The drive recorder 2 has the same configuration as that described in the first best mode, except that it does not use an attachment state detection device. That is, as is well known, the above-described vehicle status information is always stored in the memory 24 and the vehicle status information for a predetermined time before and after the impact when an impact such as an accident or sudden braking is received. Is stored in the card C. In addition, the case where vehicle status information is the same structure as what was demonstrated in the 1st best form is demonstrated.

  Next, an example of the analysis support process according to the present invention executed by the CPU 50a of the drive recorder analysis unit 5 will be described with reference to the flowchart of FIG.

  When the analysis support process shown in FIG. 9 is executed by starting the application program, an input screen for inputting related information is displayed on the display device 52 in step T1 (related information fetching means). Accordingly, various data input from the input device 51 is taken in as related information, and then the process proceeds to step T2. As for the method of taking in the related information, when the related information is stored in the card C on the drive recorder 2 side, it is taken in from the card C mounted on the reader / writer 53.

  In step T2 (gravity information fetching means), all gravity information stored in the card C attached to the reader / writer 53 is fetched via the reader / writer 53 and stored in the RAM 50c. In the taking-in means), all the vehicle state information stored in the card C is taken in via the reader / writer 53 and stored in the RAM 50c, and then the process proceeds to step T4.

  In step T4 (attachment state detection means), as in the first best mode, the relation information fetched into the RAM 50c is compared with the gravity information, and the drive recorder 2 is attached to the vehicle based on the comparison result. The state is detected and stored as attachment state information in the RAM 50c, and then the process proceeds to step T5.

  In step T5, it is determined whether correction is necessary based on the comparison result between the attachment state information of the RAM 50c and the determination condition corresponding to the predetermined relationship information. When it is determined that correction is not necessary (N in T5), it is regarded as the reference first attachment state, and the process proceeds to Step T8. On the other hand, if it is determined that correction is necessary (Y in T5), the second attachment state is considered, and the process proceeds to Step T6.

  In step T6, a correction for reversing the left and right of the vehicle status information stored in the RAM 50c is performed. In step T7, a correction for reversing the left and right of the gravity information stored in the RAM 50c is performed, and then the process proceeds to step T8.

  In step T8, data for displaying the vehicle status information stored in the RAM 50c on the display device 52 is output to the display device I / F 50f, so that the vehicle status information or the like is displayed on the display device 52 and is generated in the vehicle. The analysis of the impact is supported, and the process is terminated in response to a termination request from the user.

  Next, an example of the operation (action) of the drive recorder system 1 according to the second best mode configured as described above will be described below.

  The drive recorder 2 is in the second attachment state, that is, is held by the holding member 20B so that the housing 20A is inverted, and the holding member 20B is fixed to the windshield 3 of the vehicle, thereby It is attached to the windshield 3.

  When the drive recorder 2 is activated in response to power supply, it always stores the vehicle status information described above in the memory 24 or the like, and when it receives an impact such as an accident or sudden braking, before and after the impact. The vehicle status information over a predetermined time is stored in the card C.

  When the card C is removed from the drive recorder 2 and brought into the company, sales office, police station, etc. that owns the vehicle, the drive recorder analysis unit 5 captures the gravity information and vehicle status information stored in the card C. When these are compared to detect that the second mounting state is detected, it is determined that correction is necessary, and the captured gravity information and vehicle status information correspond to the detection reference direction in the drive recorder 2, that is, Then, correction is performed so as to correspond to the first attachment state. The vehicle status information and the like are displayed on the display device 52 of the drive recorder analysis unit 5 to support the analysis of the impact generated on the vehicle.

  When it is detected that the drive recorder analysis unit 5 is attached to the vehicle in the first attachment state, the vehicle situation information captured from the card C is not corrected, and the impact generated on the vehicle is analyzed as it is. Is supported.

  As described above, according to the drive recorder analyzing unit 5 of the present invention, when the mounting state of the drive recorder 2 with respect to the vehicle is detected, it is determined that it is necessary to correct the vehicle state information to be analyzed based on the mounting state. Since the vehicle situation information is corrected so as to be the detection reference direction in the drive recorder 2, even if the mounting state changes according to the type of the vehicle, the vehicle has the common detection reference direction. It is possible to support the analysis of the impact generated in Therefore, since the drive recorder 2 can be attached to various locations in vehicles of different vehicle types, the drive recorder 2 can be freely attached to the vehicle.

  Similarly to the first best mode described above, the holding member 20B holds the housing 20A of the drive recorder 2 in the mounting state selected from the two mounting states and fixes it to the windshield 3 of the vehicle. Since the mounting state of the casing 20A with respect to the vehicle is detected, the holding member 20B enables the casing 20A to be fixed to the vehicle in two mounting states. Since the drive recorder 2 can be attached to various places, it is possible to give a further degree of freedom in attachment to vehicles of various different vehicle types.

  Further, since the housing 20A is held by the holding member 20B so that the drive recorder 2 does not prevent the card (storage medium) C for storing vehicle status information from being attached to and detached from the housing 20A, the housing in the vehicle Since it becomes possible to fix the holding member 20B to an attachment location where the card C can be attached / detached from the 20A, and even if the vehicle type is different, it is possible to prevent the card C from being attached / detached from the housing 20A. Further flexibility can be given to attachment to vehicles of different types of vehicles.

It is a figure which shows the basic composition of the attachment state detection apparatus which concerns on this invention. It is a system configuration figure showing an example of the composition of a drive recorder system. It is a figure which shows the example of mounting | wearing with the drive recorder of FIG. 2 with respect to the windshield of a vehicle. FIG. 3 is a front view of the drive recorder of FIG. 2. FIG. 3 is a top view of the drive recorder of FIG. 2. It is a block diagram which shows an example of schematic structure of the drive recorder of FIG. It is a block diagram which shows an example of schematic structure of the drive recorder analysis unit of FIG. It is a flowchart which shows an example of the process outline | summary which concerns on this invention which CPU of FIG. 6 performs. It is a flowchart which shows an example of the analysis assistance process which concerns on this invention which CPU of FIG. 7 performs.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Drive recorder system 2 Drive recorder 5 Drive recorder analysis unit 25 Vehicle condition information detection means 27 Gravity detection means P1 Relation information acquisition means (CPU)
P2 Gravity information capture means (CPU)
P3 Mounting state detection means (CPU)

Claims (5)

Vehicle status information detecting means for detecting vehicle status information indicating the vehicle status when the vehicle is running, and gravity detecting means for detecting gravity information indicating gravity, and before and after the impact generated in the vehicle An attachment state detection device for detecting an attachment state of the drive recorder for storing the vehicle state information detected by the vehicle state information detection means with respect to the vehicle,
Relationship information capturing means for capturing relationship information indicating the relationship between the detection reference directions of the vehicle status information detection means and the gravity detection means in the reference attachment state of the drive recorder to the vehicle;
Gravity information capturing means for capturing gravity information detected by the gravity detection means mounted on the drive recorder;
A mounting state detection for comparing the relation information captured by the relationship information capturing unit with the gravity information captured by the gravity information capturing unit, and detecting the mounting state of the drive recorder with respect to the vehicle based on the comparison result. Means,
An attachment state detecting device characterized by comprising:   The vehicle situation information detection means includes a camera that images the vehicle situation, and the relation information is configured such that a detection reference direction of the vehicle situation information detection means is an imaging direction of the camera. The attachment state detection device according to claim 1, wherein A drive having vehicle status information detecting means for detecting vehicle status information indicating a vehicle status when the vehicle is running, and storing the vehicle status information detected by the vehicle status information detecting means before and after an impact generated on the vehicle In the recorder,
3. A drive recorder further comprising: the mounting state detection device according to claim 1; and gravity detecting means for detecting gravity information indicating a direction of gravity; and the drive recorder detected by the mounting state detection unit of the mounting state detection device. If it is determined that correction of the vehicle situation information detected by the vehicle situation information detection means is necessary based on the mounting state of the vehicle, the vehicle situation information corresponding to the detection reference direction is corrected and stored. Alternatively, a drive recorder characterized in that attachment state information indicating the attachment state detected by the attachment state detection means is stored in association with the vehicle state information information.   A holding member that holds the drive recorder housing in a mounting state selected from the plurality of mounting states and is fixed to the vehicle; and the relation information is in a reference mounting state of the housing. The vehicle state information detecting unit and the gravity detecting unit are configured to indicate a relationship between detection reference directions, and the mounting state detecting device detects a mounting state of the casing with respect to the vehicle based on the relationship information. The drive recorder according to claim 3, wherein the drive recorder is configured as described above. Before and after the impact generated in the vehicle, vehicle status information detection means for detecting vehicle status information indicating the vehicle status when the vehicle is running, and gravity detection means for detecting gravity information indicating the direction of gravity From the drive recorder that stores the vehicle situation information detected by the vehicle situation information detection means in association with the gravity information detected by the gravity detection means, the stored vehicle situation information and the gravity information are captured, A drive recorder analysis unit that supports analysis of the cause of the impact, etc.
The apparatus further comprises an attachment state detection device according to claim 1, and the gravity information capturing means is configured to capture gravity information stored in association with the vehicle status information, and When it is determined that correction of the vehicle status information detected by the vehicle status information detection means is necessary based on the mounting status of the drive recorder detected by the mounting status detection means of the mounting status detection device, the detection reference direction corresponds to the detection reference direction. A drive recorder analyzing unit, wherein the vehicle recorder information is corrected to be the vehicle status information.

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