JP6451959B2 - Operation management system - Google Patents

Description

  The present invention relates to an operation management system having a function of displaying operation information when an event such as a dangerous state or accident during operation of a recorded vehicle occurs.

  Conventionally, using a drive recorder, based on travel data from an acceleration sensor or speedometer mounted on a vehicle, a dangerous state such as a sudden brake or a sudden handle, or an accident such as a rear-end collision, that is, a pre-defined An operation management system that records and displays operation information including position information in a predetermined period before and after the occurrence of an event (event) and image information taken by an in-vehicle camera is used. Usually, it is determined that an event has occurred when a predetermined value of the travel data exceeds a predetermined threshold, and the record data of the operation information is retained, and then the operation information related to the event is displayed. Has been done.

  Patent Document 1 displays a predetermined threshold value such as traveling data that is a criterion for determining that an event has occurred at the same time as image information taken at the time of the event occurrence, and further, a setting for changing the threshold value A method is described in which a change screen is displayed and the threshold setting can be changed on the screen. This makes it possible to optimally set the event conditions for recording an image.

  In Patent Document 2, after detecting the occurrence of an event, it is monitored whether or not a specific vehicle state that usually occurs due to an accident or the like occurs. If the vehicle state does not occur, the occurrence of the event is invalid. A method is described in which information indicating this is added to image information to lower the priority of holding the recorded data. As a result, it is possible to prevent important image data from being erased by overwriting event information in the memory due to malfunction determination, and to further identify important image data.

Japanese Patent No. 4859756 JP 2012-3607 A

  Inappropriate setting of the threshold for driving data, which is a criterion for determining the occurrence of an event, will occur in important events related to accidents and occur even when driving a normal vehicle that is not worthy of attention. The operation information in such a running state is recorded and held as an event and displayed, and there is a problem that attention to an important event is lowered.

  Also, when driving on a road, there are places where sudden braking is likely to occur and places where sudden acceleration is likely to occur depending on the shape of the road and the surrounding conditions, and an event occurs at such a specific point. There are cases where it is determined that multiple occurrences occur. It is desirable to exclude operation information in a running state that is not determined to be important without being related to such an accident from being displayed as an event.

  In the method described in Patent Document 1, when an unimportant event frequently occurs at the same point, it is necessary to reset the threshold every time the event occurs, and it takes time and specifies the point by specifying the point. Therefore, there is a problem that all the points must be determined with the same threshold value, and the situation peculiar to the points cannot be handled.

  In the method described in Patent Document 2, it is necessary to monitor the subsequent state and add invalid information whenever an event occurs, so that the processing becomes complicated. Similarly, a threshold for event occurrence cannot be set by specifying a point.

  As described above, in the conventional operation management system, the determination of event occurrence is performed almost unambiguously in common at all points and is displayed, so even if there is a situation unique to that point, past driving experience and It was not easy to add a driver's subjective judgment based on the operation history.

  The present invention has been made to solve the above problems, and an object of the present invention is an operation management system capable of excluding operation information at a specific point that should not be determined as an event occurrence from a display target. Is to provide.

  In a first aspect, the present invention provides first determination means for determining the occurrence time of a predetermined event using operation information that is information related to the operation of the vehicle including information related to the recorded position of the vehicle, Event display means for displaying the operation information at the time of occurrence of the event, and when the vehicle travels at the selected specific point, the event generated at the specific point is displayed from the display target of the event display means An operation management system having a cancel function to be excluded is provided.

  Therefore, for example, even when the operation information when traveling at the selected specific point is the operation information corresponding to the time of occurrence of the event, the operation information at that time is not displayed. If the cancel function of the present invention is used, for example, whether the driver should display the point as an event occurrence point in consideration of the road condition, vehicle type, past operation information, past driving experience, etc. It is possible to make a determination as to whether or not. The operation information at the time of occurrence of the event is operation information for a predetermined period including at least the time of occurrence of the event. Examples of the operation information include travel data such as acceleration and speed, and image information captured by an in-vehicle camera. Etc. may be included.

  According to a second aspect, the present invention provides the operation management system according to the first aspect, further comprising: a second determination unit that determines an occurrence point of a predetermined abnormal state using the operation information; When it is determined by the determination means that the abnormal state has occurred, the operation information at the time of occurrence of the abnormal state is obtained regardless of the determination result of the first determination means and whether or not it is the specific point. It is a display target of the event display means. Even at the specific point, when an important event such as an accident actually occurs, it is necessary to determine the occurrence of the event and to display the event. In the invention of this aspect, the determination can be performed by providing the second determination unit different from the first determination unit.

  In a third aspect, the present invention is the operation management system according to the first or second aspect, further comprising point registration means for registering the specific point, and the point registration means before the vehicle is operated. It is possible to register the specific point. The specific point can be controlled to be set based on the number of times an event unrelated to the accident has occurred, but in the invention of this aspect, the specific point can be registered in advance. Is.

  For example, it is possible for the driver to set the point in advance in consideration of the road condition, vehicle type, past operation information, past driving experience, and the like of the point. Further, for example, it is possible to configure so that not only the driver but also the operation manager can register the point in advance based on the vehicle type, the driver, the number of past event occurrences, and the like.

  In a fourth aspect, the present invention provides the operation management system according to any one of the first to third aspects, wherein the specific point is set as a range including a road, and the position detection means mounted on the vehicle Information on the position is obtained based on data, and it is determined whether the vehicle is at the specific point based on the information on the position.

  In the invention of this aspect, the range of the specific point is set on the road. For example, when the specific point is a curve or an intersection on the road, whether the vehicle is in the range or not is determined. The determination is made based on the set range and data from position detection means such as GPS mounted on the vehicle. In this way, if the range of a specific point is set in advance as a range of a nearby road where an event may be determined to occur, it can be determined as the same point even if the position is slightly shifted.

  In a fifth aspect, according to the fifth aspect of the present invention, in the operation management system according to any one of the first to fourth aspects, the cancel function can be used according to a traveling direction of the vehicle at the specific point. It is characterized by determining whether or not. Normally, the driving state of a vehicle on a road varies depending on the traveling direction of the vehicle. For example, even at an intersection on the same road, the possibility of an event depends on the traveling direction of the vehicle such as turning left, turning right, or going straight. To do. Therefore, in the invention of this aspect, it is determined whether or not the cancel function can be used according to the traveling direction of the vehicle.

  In a sixth aspect, the present invention provides the operation management system according to any one of the second to fifth aspects, wherein the second determination means has a predetermined pattern in which the operation information indicates the occurrence of the predetermined abnormal state. It is characterized by determining by whether or not it is similar to. In the invention of this aspect, for example, acceleration data can be used to determine whether or not the operation information is similar to a predetermined pattern.

  For example, it can be performed by comparing a combination of amplitude and frequency components on three coordinate axes orthogonal to each other of acceleration, or their data and velocity data with a preset data pattern. This makes it possible to perform appropriate determination processing. In addition, by using the cancel function at the specific point and performing the determination by the second determination means while the vehicle is traveling, it is possible to determine the appropriate event occurrence each time, and to record information Can reduce the capacity.

  In a seventh aspect, the present invention is the operation management system according to any one of the first to sixth aspects, wherein the operation information is operation information acquired continuously at predetermined time intervals during operation of the vehicle. Yes, after the operation, it is possible to set or change the determination condition in the first determination means and select whether or not to use the cancel function at the specific point.

  In the invention of this aspect, for example, the driver of the vehicle sets the occurrence threshold of the event in the first determination means after the operation, thereby determining whether or not an accident has occurred and the actual driving risk. It is possible to more appropriately determine the event occurrence time in consideration. In addition, after the operation, it is possible to determine whether or not to use the cancel function and select an event to be displayed.

  Specifically, for example, operation information is continuously acquired at a predetermined time interval in the vehicle-mounted device and stored in a storage element such as a memory card. After the operation, the memory card is read into a personal computer and the above determination process is performed. Can be set to display or not. In this case, instead of the personal computer, the above processing and settings may be performed by a navigation device or a drive recorder main body to which a display device can be connected or built. In addition, since all the operation information during operation is stored until after the operation, the operation information that should be an event occurrence is not inappropriately deleted.

  In an eighth aspect, the present invention is the operation management system according to any one of the first to seventh aspects, further comprising map display means for displaying map information and a map, wherein the event display means is the occurrence of the event. A function of displaying a point and the specific point on a map, and a selection function for selecting whether or not to use the cancel function at the specific point on the display screen. To do. In the invention of this aspect, by displaying the event occurrence point and the specific point on the map, the point can be easily grasped. Furthermore, since it is possible to select whether or not to use the cancel function at a specific point on the display screen, the procedure for excluding the event from the display target is simplified.

  In a ninth aspect, the present invention is the operation management system according to the eighth aspect, wherein the event display means has a function of displaying the type of the event and the level of the event. By displaying the event occurrence point on the map and the level of the event type and risk level, the event can be grasped more specifically, and the necessity of using the cancel function at a specific point can be determined. It can be done more appropriately. For example, the type of event includes the occurrence of acceleration greater than or equal to a predetermined value or the occurrence of sudden deceleration, and the event level includes an acceleration with respect to a predetermined value or an excess rate of speed change.

  In a tenth aspect, the present invention provides the operation management system according to the eighth or ninth aspect, wherein the event display means displays the number of occurrences of the event at a point where the event has occurred in a predetermined period. It is characterized by having. In the invention of this aspect, since it is possible to display the operation information and the number of event occurrences in relation to the event occurrence point, it is possible to easily grasp the point where the event is likely to occur. Thereby, for example, it is possible to select whether or not to use the cancel function in consideration of the content of the event and the number of occurrences at the specific point. In addition, as a method of displaying the number of occurrences, in addition to using numbers, it is also possible to represent by the difference in symbols and colors.

  In an eleventh aspect, the present invention provides the operation management system according to the tenth aspect, wherein the event display means is configured to generate the event type and the event type at a point where the event has occurred in a predetermined period. It has a function of displaying the number of times. Not only the total number of occurrences of events, but also the number of occurrences is displayed separately for each type of event. As a result, when a plurality of types of events occur at the same point, it is possible to easily grasp events that are likely to occur, and to select whether or not to use a more appropriate cancel function.

In a twelfth aspect, the present invention is the operation management system according to any one of the eighth to eleventh aspects, wherein the event display means is an operation related to an event displayed at the event occurrence point on the map. It has a function of displaying information in the form of a table.
By displaying the operation information of the event that occurred at a point on the map in the form of a table, it becomes easier to see the operation information related to the event, more information can be displayed, etc., so the cancel function is used It is possible to appropriately select whether or not.

  In a thirteenth aspect, the present invention is the operation management system according to the twelfth aspect, wherein the table is displayed as a different table according to the traveling direction of the vehicle at the time of occurrence of the event. As mentioned above, since the possibility of the occurrence of an event depends on the traveling direction of the vehicle even at the same point, pay attention by displaying a table displaying event operation information as a different table depending on the traveling direction of the vehicle. It is possible to easily grasp event information for the traveling direction.

  In a fourteenth aspect, the present invention provides a program for causing a computer to function as the operation management system according to any one of the first to fourteenth aspects.

  As described above, according to the present invention, an operation management system capable of excluding operation information at a specific point that should not be determined as an event occurrence from being displayed is obtained.

The figure which shows schematic structure of the operation management system which concerns on Example 1. FIG. The figure which shows an example of the procedure in the case of determining the event in a specific point. The figure which shows notionally the data structure of the content recorded on a memory card. The figure explaining the mode of the acceleration change at the time of event occurrence, and the storage period of operation information. The figure which shows the acceleration change in the case of a sudden handle. The figure which shows the acceleration change in the case of a vehicle collision. It is a figure which shows the example of a display of an event display screen, and is the screen before excluding the event in a specific point from display object. It is a figure which shows the example of a display of an event display screen, and is the operation screen which excludes the event of a specific point from display object. It is a figure which shows the example of a display of an event display screen, and is the screen after excluding the event of a specific point from display object. The figure which shows schematic structure of the operation management system which concerns on Example 2. FIG. A map screen showing an example of a display screen. A map screen showing an example of a display screen.

  Hereinafter, the present invention will be described in more detail with reference to the embodiments shown in the drawings. This does not limit the present invention. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant description thereof is omitted.

  FIG. 1 is a diagram illustrating a schematic configuration of an operation management system according to the first embodiment. As shown in FIG. 1, the operation management system of the present embodiment is stored in a drive recorder 10 mounted on a vehicle, a memory card 25 that stores operation information when an event occurs in the drive recorder 10, and the memory card 25. The operation management device 30 is configured to display and manage the operation information.

  The drive recorder 10 includes a first control unit 11, an acceleration sensor (G sensor) 12, a gyro sensor 13, an atmospheric pressure sensor 14, a GPS antenna 15, and a GPS that measures GPS position information of a vehicle from a GPS signal received by the GPS antenna 15. (Global Positioning System) A first operation unit 17 including a receiver 16, a switch, a button, etc., a first memory 18 for temporarily storing images, a slot for inserting a memory card 25, and a memory card 25 A first IF (interface) 19 for writing information to the vehicle, a CCD camera 20 installed in the vehicle so as to continuously image the front of the vehicle at a predetermined rate, a vehicle signal acquisition unit 21, and a drive recorder The power supply unit 22 for supplying power to each of the ten elements is included.

  Further, the drive recorder 10 may be configured to be able to reproduce an image on a display of the navigation device in cooperation with a navigation device (not shown). Further, the GPS receiver 16 is not necessarily an essential configuration, but may be configured to acquire position information received by an external device such as an AVM (Automatic Vehicle Monitoring) system or a navigation device.

  The first control unit 11 is configured by a microcomputer including a storage device such as a CPU, a ROM, and a RAM, and controls the overall operation of the drive recorder 10. Further, the first control unit 11 generates a predetermined event using operation information including position information obtained from the GPS signal, travel data obtained from the various sensors and vehicle signals, and image information obtained from the CCD camera. The first determination unit 26 is a first determination unit for determining whether or not. The first determination unit 26 is configured as a part of the microcomputer or the like.

  The above operation information excluding the image information is temporarily stored in the storage device in the first control unit 11, and the data used in the first determination unit 26 is sequentially read out and used to determine the event occurrence time point. The In addition, the first control unit 11 causes the CCD camera 20 to capture one image every 100 milliseconds, and sequentially stores the captured image together with time data in the first memory 18 (a memory card described later). 25 to be stored for the first time). For example, the first memory 18 is configured to always store image data for 24 seconds (240 images) captured by the CCD camera 20. The image captured by the CCD camera 20 is not limited to one image every 100 milliseconds, but may be one image every 50 milliseconds, for example. Moreover, you may comprise so that the moving image image | photographed with the CCD camera 20 may be memorize | stored.

  The G sensor 12 detects accelerations in two axial directions (X axis and Y axis) orthogonal to each other, and transmits the detected acceleration (also referred to as G data) to the first control unit 11 together with time data. The first control unit 11 can acquire G data (Gx, Gy) output from the G sensor 12 at intervals of, for example, 10 milliseconds, and determine the acceleration value (magnitude) from the G data.

  Note that Gx represents acceleration in the X-axis direction (front-rear direction of the vehicle), and Gy represents acceleration in the Y-axis direction (left-right direction of the vehicle). Further, the G sensor 12 may use a three-axis sensor including the Z-axis direction (the vertical direction of the vehicle), and the three-axis sensor does not use the acceleration Gz data in the Z-axis direction. Also good.

  The gyro sensor 13 detects the angular acceleration (rotation) of the vehicle, mainly detects the change in the traveling direction of the vehicle (that is, the rotation of the yaw (Z axis) that is the vertical axis), and detects the detected angular acceleration data. Is transmitted to the first control unit 11 together with the time data. The first control unit 11 can acquire angular acceleration data output from the gyro sensor 13 at intervals of, for example, 10 milliseconds, and determine the value (magnitude) of angular acceleration from the angular acceleration data.

  The atmospheric pressure sensor 14 detects atmospheric pressure outside the vehicle, calculates the altitude based on the detected atmospheric pressure value, and transmits the atmospheric pressure value and altitude value (atmospheric pressure / altitude data) to the first control unit 11 together with time data. . For example, the first control unit 11 can acquire the atmospheric pressure / altitude data output from the atmospheric pressure sensor 14 at intervals of 10 milliseconds, and determine the value (size) of the atmospheric pressure / altitude from the atmospheric pressure / altitude data.

  The vehicle signal acquisition unit 21 is connected to a vehicle failure diagnosis connector, acquires various signals and information (vehicle data) of the vehicle at intervals of, for example, 100 milliseconds, and performs first control on the acquired vehicle data together with time data. To the unit 11. Vehicle data includes, for example, [1] a signal that detects a brake operation while driving the vehicle, [2] a signal that also detects a blinker operation, [3] a signal that also detects an accelerator operation, and [4] a steering wheel rotation. The detected signal, [5] the same signal that detected the shift lever position, [6] the same signal that detected the side brake operation, and [7] the vehicle fault diagnosis information (OBD) obtained from the vehicle fault diagnosis system (OBD) in the vehicle ( Vehicle speed, engine speed, cooling water temperature, etc.] [8] Various vehicle information obtained via in-vehicle LAN (CAN) (functional control data from the vehicle's ECU (Electronic Control Unit), network outside the vehicle, etc. Communication data from other vehicles).

  As an example, when the vehicle signal acquisition unit 21 acquires a signal for detecting a brake operation, the brake operation data indicating whether or not the vehicle brake is operated, and the brake operation start time data indicating the time when the brake operation is started. And the brake operation end time data indicating the time when the brake operation is ended is transmitted to the first control unit 11. That is, according to the brake operation data, the brake operation start time data, and the brake operation end time data from the vehicle signal acquisition unit 21, the first control unit 11 determines whether the brake operation is performed, the time when the brake operation is started, and The time when the brake operation is finished can be determined.

  As another example, when the vehicle signal acquisition unit 21 acquires a signal that detects steering wheel rotation, steering wheel rotation data that indicates whether or not the steering wheel of the vehicle has been rotated, and steering wheel rotation start that indicates the time at which steering wheel rotation has started. The time data and the handle rotation end time data indicating the time when the handle rotation is ended are transmitted to the first control unit 11. That is, according to the steering wheel rotation data, the steering wheel rotation start time data, and the steering wheel rotation end time data from the vehicle signal acquisition unit 21, the first control unit 11 determines whether the steering wheel rotation is performed, the steering wheel rotation start time, and The time when the steering wheel rotation is completed can be determined.

  Note that some or all of the GPS antenna 15, the GPS receiver 16, the first IF 19, the CCD camera 20, the vehicle signal acquisition unit 21, and the like may be configured separately from the drive recorder 10. For example, when linked with an existing navigation device having a GPS function, the drive recorder 10 does not require a function such as the GPS receiver 16, so that the cost of the drive recorder 10 can be reduced by that amount.

  The first determination unit 26 in the first control unit 11 of the drive recorder 10 has a predetermined condition (that is, when an event to be recorded by the drive recorder 10 occurs), specifically, (A) The G data output from the G sensor 12 provided in the vehicle when an impact is applied to the vehicle due to the occurrence of an event (event) corresponding to the occurrence of sudden braking, sudden steering, collision, or other accidents. When the value (magnitude) exceeds a predetermined threshold or when (b) the emergency switch of the first operation unit 17 is pressed, the event occurrence time is determined. This determination is realized by a process executed by the CPU constituting the microcomputer or the like. Various data of several seconds to several tens of seconds before and after (for example, 15 seconds before and 5 seconds after) are acquired together with event occurrence time data using the detection of the event occurrence time as a trigger, and the memory card 25 as one operation information. To record.

  The operation information recorded in the memory card 25 includes G data output from the G sensor 12, angular acceleration data output from the gyro sensor 13, atmospheric pressure / altitude data output from the atmospheric pressure sensor 14, and positioning by the GPS receiver 16. GPS position information, camera image data captured by the CCD camera 20, various signals and information of the vehicle acquired by the vehicle signal acquisition unit 21 (detection data such as brake operation and steering wheel rotation, vehicle speed data, etc.).

  The drive recorder 10 supports a plurality of camera images one by one for several seconds to several tens of seconds before and after the trigger is detected when an event to be recorded occurs (for example, 15 seconds before and 5 seconds after). In addition, various data of operation information is recorded in the memory card 25.

  The memory card 25 is a rewritable nonvolatile semiconductor memory card having a storage capacity of 2 Gbytes. The memory card 25 is inserted into a slot constituting the first IF 19 and is stored in a predetermined image (for example, an event An image for 15 seconds before the time of occurrence and an image for 5 seconds after) are stored. Thereafter, the memory card 25 is discharged from the slot constituting the first IF 19 and re-inserted into the slot constituting the second IF 36 of the operation management device 30 to manage the operation information including the stored image at the event occurrence time. Output to device 30.

  Although a semiconductor memory card is used as the memory card 25, the present invention is not limited thereto, and a semiconductor memory other than the card type, a portable hard disk (HD), other storage media, and the like can be used. Further, the storage capacity of the memory card or the like is arbitrary and can be freely determined according to the application.

  The operation management device 30 implements an event display means for displaying operation information at the time of event occurrence, and outputs other information. The operation control device 30 includes a second control unit 31, a display unit 32 including a display, and a display screen. An output unit 33 composed of a printer for printing on a paper surface, a second operation unit 34 composed of input devices such as a keyboard and a mouse, a second memory 35 for temporarily storing images, and a memory card 25 are inserted. A second IF (interface) 36 for reading an image from the memory card 25, an image processing unit 37 for performing predetermined image processing on the input image, and the like. The operation information at the time of event occurrence is displayed on the display unit 32.

  The second control unit 31 includes a CPU, a ROM, a RAM, and the like, and is a personal computer (PC) in which operation management software is installed. The operation control device 30 interprets and executes a program included in the operation management software. Each component is operated to realize various functions.

  In addition, the operation management device 30 allows the operator to register a specific point, and when the operation information at the time of occurrence of the event is the operation information generated in traveling at the specific point, the operation information is displayed as an event. In other words, the cancel function can be realized. Specifically, a specific point is registered by the second operation unit 34 using a keyboard, a mouse, or the like by designation on the displayed map or input of latitude and longitude data.

  The registered specific point is set as a range including roads, and when the event occurrence position is within the range of the specific point, the event is excluded from display by using the cancel function on the event display screen. be able to. The operator determines whether or not to use this cancel function, and performs the operation using the keyboard or mouse of the second operation unit 34.

  Note that data at a specific point is sent to the first control unit 11 of the drive recorder 10 via the second IF 36, the memory card 25, and the first IF 19, and the first determination unit 26 performs an event at the specific point in the first control unit 11. It is also possible to exclude events determined as occurring from event targets. That is, in this case, the operation information related to the event is controlled not to be the operation information to be recorded in the memory card 25.

  Further, in this case, as shown in FIG. 1, a second determination unit 27, which is a second determination unit that determines the occurrence of an abnormal state based on operation information, is provided in the first control unit 11. When it is determined that an abnormal state has occurred, the operation information at the time of occurrence of the abnormal state is recorded in the memory card 25 as an event regardless of whether or not the determination result of the first determination unit 26 is a specific point. Is also possible. In this case, the second determination unit 27 is also configured as a part of the microcomputer or the like, and the determination is realized by processing executed by the CPU. When an important event such as an accident actually occurs, it is necessary to determine the occurrence of the event, and an event display is required. The determination in the second determination unit can be determined based on whether or not the operation information is similar to a predetermined pattern indicating the occurrence of an abnormal state.

  For example, the combination of the amplitude and frequency components of the acceleration data Gx, Gy, and Gz, or the data and the velocity data can be compared with a preset data pattern.

  As described above, FIG. 2 shows an example of a flowchart of a procedure when the first control unit 11 having the second determination unit 27 determines an event at a specific point. First, operation information necessary for determining when an event occurs is read out. Next, the first determination unit 26 determines whether or not the event generation condition is satisfied based on the operation information. When the event occurrence condition is not satisfied, the operation returns to the beginning, and the operation information at the next time point is read out. When the event occurrence condition is satisfied, it is determined whether or not the event occurrence point is within the range of the registered specific point. When the event occurrence point is not within the range of the specific point, the time point of the operation information is determined as the event occurrence time point, and the operation information is recorded in the memory card 25. When the event occurrence point is within the range of the specific point, the second determination unit 27 corresponds to the occurrence of the abnormal state by determining whether or not the operation information is similar to a predetermined pattern. It is determined whether or not to do. If it does not correspond to the abnormal state, the event occurrence is canceled and the operation returns to the beginning, and the operation information at the next time is read. When it corresponds to an abnormal state, the time of the operation information is determined as the event occurrence time, and the operation information is recorded in the memory card 25. As described above, by using the cancel function at a specific point and performing the determination by the second determination unit 27 while the vehicle is traveling, it is possible to determine the occurrence of an appropriate event each time. The amount of information to be recorded can be reduced.

  Next, the data structure of the contents recorded on the memory card 25 will be described with reference to FIG. FIG. 3 is a diagram conceptually showing the data structure of the contents recorded on the memory card 25.

  As shown in FIG. 3, in the memory card 25, corresponding operation information is divided and recorded as operation information 1, operation information 2, and operation information 3 for each event occurrence. The operation information 1 is obtained from 240 camera images 1 to 240 corresponding to 20 seconds before and after the event occurrence (15 seconds before and 5 seconds after) and image related information including other operation information other than the camera images. Composed. The image related information includes G data at the time of event occurrence, main item data including time data thereof, and related data 1 to 240 corresponding to 240 camera images 1 to 240, respectively. The same applies to the operation information 2 and 3.

  Main item data includes G data, angular acceleration data, barometric pressure / altitude data, and time data. Image-related data includes the date and time of shooting of the camera image, and various signals and information of the vehicle at the time of shooting the camera image. (Detection data such as brake operation and steering wheel rotation, vehicle speed data, etc.) and vehicle GPS position information are included.

  Next, referring to FIG. 4, when an event such as an impact is applied to the vehicle, the change in acceleration (G data) detected by the G sensor 12 (see FIG. 1) of the drive recorder 10; A method for storing images and the like in the drive recorder 10 will be described.

  4A shows a time-series change of G data (combined value of Gx and Gy) output from the G sensor 12, and FIG. 4B shows an example of an image period stored in the memory card 25. Show.

  The value (size) of the G data output from the G sensor 12 suddenly increases from almost zero from when the vehicle is impacted. As shown in FIG. 4A, when the value (magnitude) of G data of the G sensor 12 reaches a threshold acceleration Gs (for example, 0.3 G) at time tp (time tp), The first determination unit 26 of the first control unit 101 recognizes this as a trigger and determines that an event has occurred. As a result, the first control unit 101 stores the image captured by the CCD camera 20 and always temporarily stored in the first memory 18 in the memory card 25 in the memory card 25, and the time tp is the event occurrence determination time data. As shown in FIG.

  Specifically, as shown in FIG. 4B, the memory card 25 is controlled to store the image PA for TA seconds before the time tp and the image PB for TB seconds after the time tp. For example, TA can be 15 seconds and TB can be 5 seconds. It should be noted that the TA and TB periods can be set freely. For example, while displaying the set time (seconds) on the setting screen (not shown) of the drive recorder 10, the time is set by operating the time setting button of the first operation unit 17 of the drive recorder 10, and the set information By saving, you can set any time.

  When an event such as an impact is applied to the vehicle as described above and the value (size) of the G data detected by the G sensor 12 exceeds a predetermined threshold, the first control unit 11 is provided for each event. Is the event occurrence time data (tp), the detected G data (Gx, Gy) of the G sensor 12 and its time data, the detected angular acceleration data of the gyro sensor 13 and its time data, the atmospheric pressure / altitude data of the atmospheric pressure sensor 14 and its data Time data, vehicle data for TA seconds before the time tp acquired by the vehicle signal acquisition unit 21 and TB seconds for the time tp after the time tp, and time data thereof (for example, brake operation data and its time data, steering wheel rotation data and its Time data, vehicle speed data and time data, etc.) are stored in the memory card 25 together with the image data. Note that only a part of the data described above may be stored in the memory card 25.

  The number of events stored in the memory card 25 can be varied according to the storage capacity of the memory card 25. For example, it is preferable that data for 500 events or more can be stored. In addition, the first control unit 11 creates a folder in the memory card 25 for each event, image data, event occurrence time data (tp), G data (Gx, Gy) of the G sensor 12 and time data, corners thereof. It is preferable to store acceleration data and its time data, atmospheric pressure / altitude data and its time data, vehicle data and its time data.

  Note that, when the above-described event occurs, exceeding the threshold acceleration Gs is set as the event generation trigger. For example, when the amount of change in acceleration per unit time exceeds a certain value (in 0.1 seconds, G It may be recognized that an event has occurred when the data value (size) changes by 0.1 G or more. In the above example, the event generation trigger is set when the combined value of Gx and Gy exceeds a predetermined value, but the determination is made using the magnitudes of the acceleration components Gx, Gy, and Gz. Also good. For example, when Gx exceeds a predetermined threshold and then Gy exceeds a predetermined threshold within a predetermined time, a trigger occurs when the pattern of temporal change in the value of each component takes a predetermined pattern (event It may be determined that (occurrence). Further, the determination may be made in consideration of the acceleration Gz in the Z direction (vertical direction).

  The acceleration change exceeding the threshold acceleration Gs includes, for example, sudden braking or sudden steering. FIG. 5 is a diagram showing a change in acceleration in the case of a sharp handle, and shows a time-series change in G data (combined value of Gx and Gy) output from the G sensor 12.

  As shown in FIG. 5, when the sudden handle is started to be turned at time t3, the G sensor 12 mainly detects the lateral acceleration (Gy) of the vehicle, and the acceleration changes. The acceleration (G data) from the G sensor 12 gradually increases from the time t3 (that is, the acceleration in the direction opposite to the direction in which the vehicle bends increases), and becomes a threshold acceleration Gs (for example, 0.3 G). At time (time tp), the first control unit 11 recognizes this as a trigger, determines that an event has occurred, and the CCD camera 20 captures an image that is always stored cyclically in the first memory 108. The memory card 25 is stored, and the time tp is operated to be stored in the memory card 25 as event occurrence determination time data.

  After the time tp, the acceleration continues to increase, reaches a maximum value (maximum value), then gradually decreases instead of decreasing (that is, the acceleration in the direction opposite to the vehicle turning direction decreases) and then decreases rapidly. After the zero point, it further decreases (ie, the acceleration in the direction of turning of the vehicle increases), becomes a minimum value (minimum value), and increases rapidly instead of increasing (ie, the acceleration in the direction of turning of the vehicle decreases) When the vehicle has finished turning and the steering wheel has been turned (ie, the steering wheel has been returned) (time t4), it becomes zero.

  In FIG. 5, a period Tf from time t3 to time tp is “a period from the beginning of dangerous driving to immediately before the occurrence of a trigger”, and a period Tg from time tp to time t4 is a period of “dangerous driving behavior”.

  FIG. 6 is a diagram showing a change in acceleration in the case of a vehicle collision, and shows a time-series change in G data (combined value of Gx and Gy) output from the G sensor 12.

  As shown in FIG. 6, when the vehicle collides with something at time t5, the G sensor 12 detects and changes the vehicle longitudinal acceleration (Gx) and the lateral acceleration (Gy), respectively. The acceleration (G data) from the G sensor 12 suddenly increases immediately after time t5 and then suddenly increases / decreases, and then increases rapidly, which becomes a threshold acceleration Gs (for example, 0.3G). (Time tp), the first control unit 11 recognizes this as a trigger, determines that an event has occurred, the CCD camera 20 picks up an image, and is always stored in the first memory 18 in a cyclic manner. Are stored in the memory card 25, and the time tp is stored in the memory card 25 as event occurrence determination time data.

  Specifically, similarly to FIG. 4, control is performed so that the image PA for TA seconds before the time tp and the image PB for TB seconds after the time tp are stored in the memory card 25.

  After time tp, the acceleration increases, decreases rapidly after reaching the maximum value (maximum value), increases rapidly after reaching the minimum value (minimum value) after passing through the zero point, and then increases again after passing through the zero point. After the value (maximum value) is reached, it rapidly decreases, and after passing through the zero point again, sudden increase and decrease are repeated, and then the vehicle stops and becomes zero when the acceleration converges (t6).

  In FIG. 6, a period Th from time t5 to time tp is an “impact period before a large impact”, and an impact waveform due to impact mitigation due to the effect of a bumper, a guard rail, or the like of the vehicle appears in this period Th. A period Ti from time tp to time t6 is a period of “impact behavior”.

  7, 8, and 9 are diagrams illustrating display examples of the event display screen displayed on the display unit of the operation management device 30, and FIG. 7 is a diagram before an event at a specific point is excluded from display targets. FIG. 8 is an operation screen for excluding an event at a specific point from the display target, and FIG. 9 is a screen after the event at the specific point is excluded from the display target. This display example is mounted in the drive recorder 10 and the memory card 25 in which operation information including camera images and image related information is recorded is taken out and displayed on the display unit 32 of the operation management device 30 at a specific point. The example in the case of performing operation which excludes these events from display object in the operation management apparatus 30 is shown.

In FIG. 7, on the map screen 50 displayed at the lower right, four event occurrence points <1> to <4> that occurred within a predetermined period within the range are displayed on the map screen 50. The four images 52 at the time of occurrence of each event are arranged and displayed in order from the left in the upper left part of the display screen. The certain period can be, for example, within one year, within several months, within several weeks, or the like. In addition, the date and time of occurrence of each event and the type of event are displayed in the upper right image 51. Further, the operation information of the second event <2> selected in the image 51, that is, the numerical data of the speed, acceleration and position at the time of the event occurrence is displayed in the lower left image 53, and the acceleration time before and after the event occurrence is displayed. Various changes are displayed in the lower image 54. Furthermore, the map screen 50 displays specific points A and B registered within the range.
In FIG. 7, only one image at the time of event occurrence of each event is displayed. However, for a certain period before and after the event occurrence time of each event recorded in the memory card 25, for example, several seconds to several tens of times. It is also possible to display a plurality of images in a second in time series in the portion of the image 55 that is a space in FIG.

  When excluding an event at a specific point from the display target, the operation screen of FIG. 8 is displayed. This display operation is performed by, for example, performing a click operation by moving the pointer to a specific point surrounded by a square displayed on the map, or a portion of the image 56 on the screen, or by an input using a keyboard. . On this display screen, an image 56 indicating specific points A and B included in the map screen 50 is displayed above the map screen 50. The specific point is set as a range including the road as described above. Since the occurrence position of the event <4> is within the range of the specific point B in FIG. 8, the event <4> is selected. Next, when excluding the event <4> from the display target based on the operator's judgment such as the level of the event <4> and past driving experience, the event <4> is displayed on the image 57 between the image 56 and the map screen 50. Press the cancel button. As a result, the event <4> is excluded from the display target. FIG. 9 is an image showing a state where the event <4> is excluded from the display target after the above operation.

  FIG. 10 is a diagram illustrating a schematic configuration of an operation management system according to the second embodiment. As shown in FIG. 10, the operation management system of this embodiment includes a drive recorder 60 mounted on a vehicle, a memory card 65 that stores operation information in the drive recorder 60, and operation information stored in the memory card 65. Is used to determine the event occurrence time, and display and manage the event.

  In this embodiment, the operation information is continuously acquired at a predetermined time interval during the operation of the vehicle, and all the operation information is recorded in the memory card 65 together with the time data. For example, the operation unit to be recorded is from engine on to off. Moreover, as the fixed time interval, for example, about several milliseconds to several tens of milliseconds can be selected. In the present embodiment, the first determination unit 76 as the first determination unit that determines the occurrence time of the event and the second determination unit 77 as the second determination unit that determines the occurrence of the abnormal state are the operation management device. 70 in the second control unit 71. The CCD camera 20 captures one image every 50 to 100 milliseconds, and sequentially stores the captured images in the first memory 18 together with time data. The stored image data may be recorded on the memory card 65 as it is, or the change rate of the image may be detected and the time interval for recording the image on the memory card 65 may be adjusted according to the change rate. . Further, the moving picture taken by the CCD camera 20 may be stored in the memory card 65. About the part other than the above, the structure of the drive recorder 60 and the operation management apparatus 70 is the same as that of the structure of FIG.

  The method of determining the event occurrence time based on the operation information in the first determination unit 76 and the second determination unit 77 is the same as that in the first embodiment, but in this embodiment, the operation management device 70 is operated after the operation. The determination conditions in the first determination unit 76 can be set or changed. In addition, it is possible to select whether or not to use the cancel function at a specific point after operation.

  Although the display image in the operation management apparatus 70 can also be made into the display image similar to the display example of FIGS. 7-9, the other display method is also possible. FIG. 11 is a map screen showing an example of the display screen. In the map screen of FIG. 11, information related to the event displayed at the event occurrence point on the map is displayed in the form of a table. In the table 81, the event level is displayed as H or L, and the number of occurrences of the same event at the same point in a predetermined period is also displayed.

  FIG. 12 is a map screen showing an example of another display screen. In FIG. 12, three events that occurred in a predetermined period at the point of event <2> are displayed in table 82. This event occurs when the traveling direction of the vehicle is directed downward from above the map screen. In Table 82, the traveling direction is indicated by an arrow.

  As another display method, it is also possible to collectively display the number of occurrences of all the events that have occurred within the range of the map displayed in a certain period for each point and for each event type. As described above, when event information is displayed in the form of a table on the map screen, the operation of removing the event at that point from the display target using the cancel function at a specific point can be performed as follows, for example. it can. One method is to display a specific point at the same time as the event occurrence point on the map screen in the same way as the map screen of FIG. 7, and move the pointer to the event in the specific point and click to remove it from the display. As a setting method and other methods, move the pointer to the event in the table or the event on the map and click to display whether or not the event occurrence point is in a specific point. In the case of the above, a cancel button is displayed to enable cancellation. It is also possible to implement a cancel function by inputting an event number or the like using a keyboard.

<Modification>
The present invention is not limited to the description of the embodiment of the present invention described above, and various modifications are possible. For example, the following modifications may be made.

(1) In the embodiment described above, the time (time tp) when the value (size) of the G data output from the G sensor 12 reaches the threshold acceleration Gs is recognized as a trigger, and it is determined that an event has occurred. However, the present invention is not limited to this. For example, when the value (size) of the angular acceleration data output from the gyro sensor 13 or the atmospheric pressure / altitude data output from the atmospheric pressure sensor 14 becomes a predetermined value, it is recognized as a trigger. It may be determined that an event has occurred. Further, it may be determined that an event has occurred from the result of analyzing the recorded video.
In addition, when an emergency switch of the first operation unit 17 is pressed, when a signal is input from an external port, and communication from an external device such as an AVM-ECU (Automatic Vehicle Monitoring-Engine Control Unit) (for example, The time when an event occurs may be when a command is received by RS-232C).

(2) As a method for displaying an image relating to an event, four times before and after the event are selected for each event such as sudden braking, sudden steering, or vehicle collision from images of a predetermined period stored for each event. It is possible to display a photographed image, select and display a plurality of images photographed at a plurality of different time points other than the four time points, and the like. The plurality of different time points may be various combinations depending on the type of event, but is preferably a combination of time points at which event characteristics appear (a specific period within a predetermined period).
The combination of the time when the feature of the event appears is obtained by using various data such as “data detecting the behavior of the vehicle” and “data relating to the functional state of the vehicle” stored in the memory card 25 together with the image data alone or in combination. Based on these data, it is preferable to select a plurality of images taken at an appropriate timing and display the selected images.

  The “data detecting the behavior of the vehicle” may be, for example, acceleration data, angular acceleration data, atmospheric pressure / altitude data, video analysis data, or the like. Examples of the “data relating to the functional state of the vehicle” include data relating to operation of any one of brake, turn signal, accelerator, steering wheel rotation, shift lever position, and side brake during vehicle operation, and a vehicle failure diagnosis system. Data obtained from OBD (On Board Diagnosis) and CAN (Controller Area Network) which is an in-vehicle LAN may be used.

(3) Not limited to the above-described embodiment, but is different from information used to determine that an event has occurred (for example, G data (Gy) in the left-right direction of the vehicle by a sudden handle) (for example, a vehicle by sudden braking) An image captured when the G data (Gx) in the front-rear direction becomes a predetermined value (for example, a maximum value) may be selected and displayed. Thereby, information (for example, G data (Gx) by sudden braking) different from information (for example, G data (Gy) by sudden steering) used to determine that an event has occurred becomes a predetermined value. Images related to events can be easily found.

(4) Not limited to the above-described embodiment, for example, when the G data value (magnitude) reaches the threshold acceleration Gs and it is determined that an event has occurred (time tp), for example, the G data Sub-events that caused the occurrence of events such as the time when it becomes a local minimum, the time when it becomes an inflection point of time series change of G data, and the time when G data changes characteristically such as sudden increase and decrease in a short time It is also possible to select and display an image picked up at the time when the occurrence time is estimated. As a result, for example, it is possible to easily find an image related to an event at the time of estimating the occurrence time of a sub-event that caused the occurrence of an event, such as a time when a characteristic change such as a sudden increase or decrease in G data occurs. it can.

(5) In the above-described embodiment, the operation management system of the present invention has been described with a configuration in which a drive recorder and an operation management device are combined as in the configuration example of FIG. 1 or FIG. It can be implemented as a function. For example, you may incorporate as a function of a navigation apparatus, a drive recorder, a radar detector, and a car audio.

(6) Not limited to the above-described embodiment, a control program stored in advance in the ROM of the second control unit 31 or 71 of the operation management device 30 or 70 is used as a general-purpose personal computer, mobile phone, smartphone, or portable game machine. Download to a portable terminal, etc., cause the computer mounted on the portable terminal to execute the control process of the second control unit 31 or 71, and read and read the image and various data stored in the memory card 25 or 65. You may display the image created from the image and various data.

(7) Each function of the above embodiment is realized by describing the function in a computer-readable program language and causing the computer of the second control unit 31 or 71 to execute the program. For example, the program may be distributed to a plurality of computers and distributedly processed.

10, 60 Drive recorder 11, 61 First control unit 12 Acceleration sensor (G sensor)
DESCRIPTION OF SYMBOLS 13 Gyro sensor 14 Barometric pressure sensor 15 GPS antenna 16 GPS receiver 17 1st operation part 18 1st memory 19 1st IF (interface)
20 CCD camera 21 Vehicle signal acquisition unit 22 Power supply unit 25, 65 Memory card 26, 76 First determination unit 27, 77 Second determination unit 30, 70 Operation management device 31, 71 Second control unit 32 Display unit 33 Output unit 34 Second operation unit 35 Second memory 36 Second IF (interface)
37 Image processing unit 38 Display processing unit 50 Map screen

Claims (3)

First determination means for determining the occurrence time of a predetermined event using operation information that is information relating to the operation of the vehicle including information relating to the position of the recorded vehicle, and displaying the operation information at the time of occurrence of the event An operation management system having a cancel function for excluding an event generated at the specific point from a display target of the event display unit when the vehicle travels at the selected specific point. There,
Even if it is a point excluded from the display target of the event display means by the cancel function, it is determined that the abnormal state has occurred by the second determination means for determining the occurrence of a predetermined abnormal state using the operation information. The operation management system is characterized in that the operation information at the point is the display target of the event display means.   The operation management system according to claim 1, wherein the second determination unit determines whether or not the operation information is similar to a predetermined pattern indicating the occurrence of the predetermined abnormal state. A program for causing a computer to function as the operation management system according to claim 1 .