JP2022031773A - Operation management system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an operation management system capable of excluding, from a display target, operation information at a specific spot that is not to be determined as an event occurrence.

SOLUTION: An operation management system includes: first determination means for determining a temporal point of occurrence of a predetermined event by using operation information of a vehicle including the information related to a recorded position of the vehicle; event display means for displaying the operation information at the temporal point of the event occurrence; and a cancel function of excluding an event that has occurred at a selected specific spot from a display target of the event display means in the case that the vehicle travels the selected specific spot. This enables a driver to determine whether the spot is to be displayed as an event occurrence spot in consideration of a road condition of the spot, the past operation information and his/her own driving experience and the like.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2022,JPO&INPIT

Description

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

Conventionally, using a drive recorder, based on the driving data from the accelerometer and speedometer mounted on the vehicle, when a dangerous situation such as sudden braking or sudden steering or an accident such as a rear-end collision occurs, that is, it is specified in advance. An operation management system is used that records and displays operation information including position information and image information taken by an in-vehicle camera during a predetermined period before and after the occurrence of an event. Normally, it is determined that an event has occurred when a predetermined value of driving data exceeds a predetermined threshold value, the recorded data of the above-mentioned operation information is retained, and then the operation information related to the event is displayed. Is being done.

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

In Patent Document 2, after detecting the occurrence of an event, it is monitored whether a specific vehicle state that normally occurs due to an accident or the like occurs, and if the vehicle state does not occur, the occurrence of the event is invalid. A method of adding information indicating that to the image information and lowering the priority of retaining the recorded data is described. This prevents important image data from being erased by overwriting event information in the memory due to a malfunction determination, and makes it possible to further facilitate identification of important image data.

Japanese Patent No. 4859756 Japanese Unexamined Patent Publication No. 2012-3607

If the threshold value of the driving data, which is the standard for determining the occurrence of an event, is improperly set, it will be mixed with important events related to accidents, etc., and will occur even in normal vehicle driving that is not noteworthy. Operation information in such a driving state will be recorded and displayed as an event, and there will be a problem that attention to important events will be reduced.

In addition, when driving on a road, depending on the shape of the road and the surrounding conditions, there are places where sudden braking is likely to occur and places where sudden acceleration is likely to occur, and an event occurs at such a specific point. May occur frequently. It is desirable to exclude the operation information in the driving state, which is not related to such an accident and is not judged to be important, from the display target as an event.

In the method described in Patent Document 1, when an unimportant event occurs frequently at the same point, it is troublesome because it is necessary to reset the threshold value for each event occurrence, and the threshold value is set by specifying the point. Since it is not possible to do so, all points must be judged with the same threshold value, and there is a problem that the situation peculiar to that point cannot be dealt with.

The method described in Patent Document 2 is complicated in processing because it is necessary to monitor the subsequent state and add invalid information whenever an event occurs. Similarly, it is not possible to specify a point and set a threshold value for event occurrence.

As described above, in the conventional operation management system, the judgment of the occurrence of an event is almost uniquely made and displayed at all points, so even if there is a situation peculiar to that point, past driving experience and It was not easy to add the 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 the display target. Is to provide.

From the first aspect, the present invention comprises a first determination means for determining the time of occurrence of a predetermined event using operation information which is information on the operation of the vehicle including recorded information on the position of the vehicle, and the above-mentioned. It has an event display means for displaying the operation information at the time of occurrence of the event, and when the vehicle travels at a selected specific point, the event generated at the specific point is displayed from the display target of the event display means. Provided is an operation management system characterized by having a cancel function to be excluded.

Therefore, for example, even if the operation information when traveling at the selected specific point is the operation information corresponding to the time when the event occurs, the operation information at that time is not displayed. If the cancel function of the present invention is used, for example, should the driver display the point as an event occurrence point in consideration of the road condition, vehicle type, past operation information, own past driving experience, etc. at that point? It is possible to add a judgment 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, and the operation information includes, for example, travel data such as acceleration and speed, and image information captured by an in-vehicle camera or the like. Etc. may be included.

From the second aspect, the present invention has the second determination means for determining the time point at which a predetermined abnormal state occurs by using the operation information in the operation management system according to the first aspect. 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 used regardless of the determination result of the first determination means and whether or not it is at the specific point. It is characterized in that it is a display target of the event display means. Even at the above-mentioned specific point, when an important event such as an accident actually occurs, it is necessary to determine the occurrence of the event, and it is necessary to display the event. In the invention of this aspect, the determination can be made by providing a second determination means different from the first determination means.

From a third aspect, the present invention has a point registration means for registering the specific point in the operation management system according to the first or second aspect, and the point registration means is used before the operation of the vehicle. It is characterized in that 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 the present viewpoint, the specific point can be registered in advance. It is a thing.

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

From the fourth aspect, in the operation management system according to any one of the first to third aspects, the present invention sets the specific point as a range including the road, and the position detecting means mounted on the vehicle is used. It is characterized in that information on the position is obtained based on the data, and it is determined whether or not 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, if the specific point is a curve or an intersection on the road, whether or not the vehicle is within the range is determined. , The determination is made based on the set range and the data from the position detecting means such as GPS mounted on the vehicle. In this way, if the range of a specific point is set in advance to the range of the road in the vicinity where the event may be determined to occur, it can be determined as the same point even if the position is slightly deviated.

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

From a sixth aspect, the present invention is 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 in that it is determined by whether or not it is similar to. In the invention of the present viewpoint, for example, acceleration data can be used for determining whether or not the operation information is similar to a predetermined pattern.

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

From the 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 continuously acquired at predetermined time intervals during the operation of the vehicle. It is characterized in that, 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 cancellation function at the specific point.

In the invention of this aspect, for example, the driver of the vehicle sets the threshold value of the event occurrence in the first determination means after the operation, so that the presence or absence of an accident and the degree of danger of the actual driving can be determined. Considering this, it is possible to more appropriately determine the time when the event occurs. 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, the on-board unit continuously acquires operation information at predetermined time intervals and stores it 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 show or hide. In this case, instead of the personal computer, the above processing and settings may be performed by a drive recorder main body to which a navigation device or a display device can be connected or built-in. In addition, since all the operation information during operation is stored until after the operation, the operation information that should cause an event is not deleted improperly.

From the eighth aspect, the present invention has a map display means for displaying map information and a map in the operation management system according to any one of the first to seventh viewpoints, and the event display means generates the event. It has a function of displaying a point and the specific point on a map, and is characterized by having a selection function of selecting whether or not to use the cancel function at the specific point on the display screen. do. In the invention of the present viewpoint, by displaying the event occurrence point and the specific point on the map, those points 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 becomes simple.

From a ninth aspect, the present invention is characterized in that, in the operation management system according to the eighth aspect, 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 at the same time displaying the level such as the type and risk of the event, it is possible to grasp the event more concretely and judge whether it is necessary to use the cancel function at a specific point. It can be done more appropriately. For example, the type of event includes the occurrence of acceleration or sudden deceleration above a predetermined value, and the level of the event includes the excess rate of acceleration or speed change with respect to a predetermined value.

From the tenth aspect, the present invention has the function of displaying the number of occurrences of the event at the point where the event has occurred in a predetermined period in the operation management system according to the eighth or ninth aspect. It is characterized by having. In the invention of the present viewpoint, since the operation information and the number of times of occurrence of the event can be displayed in relation to the occurrence point of the event, it is possible to easily grasp the point where the event is likely to occur. Thereby, for example, at the specific point, 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. In addition to using numbers, it is also possible to display the number of occurrences by using symbols or different colors.

From the eleventh aspect of the present invention, in the operation management system according to the tenth aspect, the event display means is generated for each type of the event and the type of the event at the point where the event occurs in a predetermined period. It is characterized by having 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 the events that are likely to occur, and it is possible to select whether or not to use the more appropriate cancel function.

From the twelfth aspect of the present invention, in the operation management system according to any one of the eighth to eleventh viewpoints, the event display means is an operation related to an event displayed at the event occurrence point on the map. It is characterized by having a function of displaying information in the form of a table.
By displaying the operation information of the event that occurred at the point on the map in the form of a table, the operation information related to the event can be easily seen, more information can be displayed, etc., and the cancel function is used. It is possible to appropriately select whether or not to use it.

From the thirteenth aspect, the present invention is characterized in that, in the operation management system according to the twelfth aspect, 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, the possibility of an event occurring depends on the traveling direction of the vehicle even at the same point, so we will focus on displaying the table displaying the operation information of the event as a different table according to the traveling direction of the vehicle. Information on the event in the direction of travel can be easily grasped.

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

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

The figure which shows the schematic structure of the operation management system which concerns on Example 1. The figure which shows an example of the procedure when the judgment of an event at a specific point is made. The figure which conceptually shows the data structure of the contents recorded in a memory card. The figure explaining the state of the acceleration change at the time of an event, and the storage period of operation information. The figure which shows the acceleration change in the case of a steep steering wheel. The figure which shows the acceleration change in the case of a vehicle collision. It is a figure which shows the display example of the event display screen, and is the screen before excluding the event at a specific point from the display target. It is a figure which shows the display example of the event display screen, and is an operation screen which excludes an event of a specific point from a display target. It is a figure which shows the display example of the event display screen, and is the screen after excluding the event of a specific point from the display target. The figure which shows the schematic structure of the operation management system which concerns on Example 2. 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 examples shown in the figure. This does not limit the invention. In the description of the drawings, the same elements are designated by the same reference numerals, and the duplicated description thereof will be omitted.

FIG. 1 is a diagram showing a schematic configuration of an operation management system according to the first embodiment. As shown in FIG. 1, the operation management system of this 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. It is composed of an operation management device 30 for displaying and managing the operation information.

The drive recorder 10 has a first control unit 11, an acceleration sensor (G sensor) 12, a gyro sensor 13, a pressure sensor 14, a GPS antenna 15, and a GPS that measures the GPS position information of the vehicle from the 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 primary storage of images, a slot for inserting a memory card 25, and a memory card 25. A first IF (interface) 19 for writing information to, 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. It has a power supply unit 22 and the like for supplying power to each element of 10.

Further, the drive recorder 10 may be configured to reproduce an image on the display of the navigation device in cooperation with the navigation device (not shown). Further, although the GPS receiver 16 is not necessarily indispensable, it may be configured to acquire the 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 composed of a microcomputer or the like including a storage device such as a CPU, ROM, and RAM, and controls the entire operation of the drive recorder 10. Further, the first control unit 11 uses the operation information including the position information obtained from the GPS signal, the traveling data obtained from the above-mentioned various sensors and vehicle signals, and the image information obtained from the CCD camera to generate a predetermined event. It has a first determination unit 26 which is a first determination means for determining. The first determination unit 26 is configured as a part of the above-mentioned 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 for determining the time when the event occurs. To. Further, in the first control unit 11, the CCD camera 20 captures one image every 100 milliseconds, and the captured image is sequentially and cyclically stored in the first memory 18 together with the time data (memory card described later). It is controlled to be the primary memory) for the memory to 25. For example, the image data for 24 seconds (240 images) captured by the CCD camera 20 is always stored in the first memory 18. 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. Further, it may be configured to store the moving image taken by the CCD camera 20.

The G-sancer 12 detects accelerations in biaxial directions (X-axis and Y-axis) orthogonal to each other, and transmits the detected accelerations (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.

It is assumed that Gx indicates acceleration in the X-axis direction (front-back direction of the vehicle) and Gy indicates acceleration in the Y-axis direction (left-right direction of the vehicle). Further, the G sensor 12 may be a 3-axis sensor 12 including the Z-axis direction (vertical direction of the vehicle), or the 3-axis sensor 12 does not use the acceleration Gz data in the Z-axis direction. Is also good.

The gyro sensor 13 detects the angular acceleration (rotation) of the vehicle, and mainly detects the change in the traveling direction of the vehicle (that is, the rotation of the yaw (Z axis) which is the vertical axis), and 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 the angular acceleration data output from the gyro sensor 13 at intervals of, for example, 10 milliseconds, and determine the value (magnitude) of the angular acceleration from the angular acceleration data.

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

The vehicle signal acquisition unit 21 is connected to a vehicle failure diagnosis connector to acquire various vehicle signals and information (vehicle data) at intervals of, for example, 100 milliseconds, and first controls the acquired vehicle data together with time data. Send to unit 11. The vehicle data includes, for example, [1] a signal for detecting a brake operation during vehicle operation, [2] a signal for detecting a winker operation, [3] a signal for detecting an accelerator operation, and [4] a signal for rotating the handle. The detected signal, [5] the signal that also detected the shift lever position, [6] the signal that also detected the side brake operation, and [7] the vehicle failure diagnosis information obtained from the vehicle failure diagnosis system (OBD) in the vehicle ( Vehicle speed, engine speed, cooling water temperature, etc.), [8] Various vehicle information obtained via the in-vehicle LAN (CAN) (each function control data from the ECU (Electronic Control Unit) of the own vehicle, network outside the vehicle, etc. Communication data from the vehicle, etc.).

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 brake of the vehicle has been operated and the brake operation start time data indicating the time when the brake operation is started are shown. And the brake operation end time data indicating the time when the brake operation is completed is transmitted to the first control unit 11. That is, based on 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 or not the brake operation has been performed, the time when the brake operation was started, and the time when the brake operation was started. It is possible to determine the time when the brake operation is completed.

As another example, when the vehicle signal acquisition unit 21 acquires a signal for detecting the rotation of the steering wheel, the steering wheel rotation data indicating whether or not the steering wheel of the vehicle has been rotated and the steering wheel rotation start indicating the time when the steering wheel rotation has started are started. The time data and the steering wheel rotation end time data indicating the time when the steering wheel rotation is completed are transmitted to the first control unit 11. That is, based on 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 or not the steering wheel has been rotated, the time when the steering wheel rotation has started, and the time when the steering wheel rotation has started. It is possible to determine the time when the steering wheel rotation is completed.

A part 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 need a function such as a GPS receiver 16, so that the cost of the drive recorder 10 can be kept low by that amount.

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

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

The drive recorder 10 supports each of a plurality of camera images for several seconds to ten and several seconds (for example, 15 seconds before, 5 seconds after, etc.) from the time when an event to be recorded occurs and a trigger is detected. Attached, various data of operation information is recorded in the memory card 25.

The memory card 25 is a rewritable non-volatile semiconductor memory card having a storage capacity of 2 GB. The memory card 25 is inserted into the slot constituting the first IF 19, and is always cyclically and primarily stored in the first memory 18 for a predetermined period before and after the occurrence of the event (for example, of the event). The image for 15 seconds before the time of occurrence and the image for 5 seconds after the occurrence) are stored. After that, the memory card 25 is ejected from the slot constituting the first IF 19 and reinserted into the slot constituting the second IF 36 of the operation management device 30, and operates the operation information including the stored image at the time of event occurrence. Output to device 30.

Although a semiconductor memory card is used as the memory card 25, the semiconductor memory card other than the card type, a portable hard disk (HD), other storage media, and the like can be used without limitation. Further, the storage capacity of the memory card or the like is arbitrary and can be freely determined according to the intended use.

The operation management device 30 displays a second control unit 31, a display unit 32 composed of a display, and a display screen in order to realize an event display means for displaying operation information at the time of event occurrence and output other information. Insert an output unit 33 composed of a printer or the like for printing on paper, a second operation unit 34 including an input device such as a keyboard and a mouse, a second memory 35 for primary storage of images, and a memory card 25. It includes a second IF (interface) 36 for reading an image from the memory card 25, and an image processing unit 37 for performing predetermined image processing on an input image. The operation information at the time of occurrence of the event is displayed on the display unit 32.

The second control unit 31 is a personal computer (PC) that includes a CPU, ROM, RAM, and the like and has operation management software installed, and interprets and executes a program included in the operation management software to execute the operation management device 30. Operate each component of the above to realize various functions.

Further, the operation management device 30 allows the operator to register a specific point, and further, when the operation information at the time of occurrence of the event is the operation information generated in the running of the specific point, the operation information is displayed as an event. It is configured so that it can be excluded from the target of, that is, the cancel function can be realized. Specifically, the second operation unit 34 registers a specific point by specifying on the displayed map, inputting latitude and longitude data, and the like using a keyboard, a mouse, and the like.

The registered specific point is set as a range including the road, and if the event occurrence position is within the range of the above specific point, the event is excluded from the display target 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, mouse, or the like of the second operation unit 34.

The 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 control unit 11 causes an event by the first determination unit 26 at the specific point. It is also possible to exclude the event determined to occur from the event target. That is, in this case, the operation information related to the event is controlled so as not to be the operation information to be recorded on the memory card 25.

Further, in this case, as shown in FIG. 1, a second determination unit 27, which is a second determination means for determining the occurrence of an abnormal state based on operation information, is provided in the first control unit 11, and the second determination unit 27 provides the second determination unit 27. When it is determined that an abnormal condition has occurred, the operation information at the time of the occurrence of the abnormal condition is recorded in the memory card 25 as an event regardless of the determination result of the first determination unit 26 and whether or not it is a specific point. Is also possible. In this case, the second determination unit 27 is also configured as a part of the above-mentioned microcomputer or the like, and the determination is realized by a process 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 it is necessary to display the event. The determination in the second determination unit can be determined by whether or not the operation information resembles a predetermined fixed 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 described above, 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 for determining an event at a specific point in the first control unit 11 having the second determination unit 27. First, the operation information necessary for determining the time when the event occurs is read out. Next, the first determination unit 26 determines whether or not the above-mentioned event occurrence condition is satisfied based on the operation information. If the condition for event occurrence is not satisfied, it returns to the beginning and reads the operation information at the next time. When the condition for event occurrence is satisfied, it is determined whether or not the event occurrence point is within the range of the registered specific point. If 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 on the memory card 25. When the event occurrence point is within the range of a specific point, the second determination unit 27 corresponds to the occurrence of the above-mentioned abnormal state by judging whether or not the operation information is similar to a predetermined pattern. Determine whether or not to do so. If it does not correspond to the abnormal state, the event occurrence is canceled and the process returns to the beginning, and the operation information at the next time is read. If it corresponds to an abnormal state, the time of the operation information is determined as the time of event occurrence, and the operation information is recorded on the memory card 25. In this way, by using the cancel function at a specific point and performing the determination by the second determination unit 27 while the vehicle is running, it is possible to determine an appropriate event occurrence each time, and the memory card 25 can be determined. The amount of information to be recorded can be reduced.

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

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

The main item data includes G data, angular acceleration data, pressure / altitude data, and each time data, and the image-related data includes the shooting date and shooting time of the camera image, and various signals and information of the vehicle at the time of shooting the camera image. Includes (detection data such as brake operation and steering wheel rotation, vehicle speed data, etc.) and GPS position information of the vehicle.

Next, with reference to FIG. 4, the state of change in acceleration (G data) detected by the G sensor 12 (see FIG. 1) of the drive recorder 10 when an event such as an impact is applied to the vehicle occurs. A method of storing an image or the like in the drive recorder 10 will be described.

FIG. 4A shows time-series changes in G data (combined values 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. Shows.

From the time when the impact is applied to the vehicle, the value (magnitude) of the G data output from the G sensor 12 rapidly increases from almost zero. Then, as shown in FIG. 4A, when the value (magnitude) of the G data of the G sensor 12 reaches the threshold acceleration Gs (for example, 0.3 G) at the time tp (time tp), the th. 1 The first determination unit 26 of the control unit 101 recognizes it as a trigger and determines that an event has occurred. As a result, the first control unit 101 stores in the memory card 25 an image imaged by the CCD camera 20 and always cyclically primarily stored in the first memory 18, and sets the time tp as event occurrence determination time data. It operates so as to be stored in the memory card 25.

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. 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 is set. You can set it to any time by saving.

When an event such as an impact is applied to the vehicle as described above and the value (magnitude) of the detected G data of the G sensor 12 exceeds a predetermined threshold value, the first control unit 11 is used 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 angle acceleration data of the gyro sensor 13 and its time data, the pressure / altitude data of the pressure sensor 14 and its time. Time data, vehicle data for TA seconds before time tp and TB seconds after time tp acquired by the vehicle signal acquisition unit 21 and its time data (for example, brake operation data and its time data, handle rotation data and its). Time data, vehicle speed data and its time data, etc.) are stored in the memory card 25 together with image data. It should be noted that only a part of the above-mentioned data 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, but for example, it is preferable to be able to store data for 500 events or more. Further, the first control unit 11 creates a folder in the memory card 25 for each event, and image data, event occurrence time data (tp), G data (Gx, Gy) of the G sensor 12, and the time data, corners. It is preferable to store acceleration data and its time data, pressure / altitude data and its time data, vehicle data and its time data.

When the above-mentioned event occurs, the trigger for the event is to exceed the threshold acceleration Gs. For example, when the amount of change in acceleration per unit time exceeds a certain value (G in 0.1 seconds). It may be recognized that the event has occurred when the value (magnitude) of the data changes by 0.1 G or more. Further, in the above example, when the combined value of Gx and Gy exceeds a predetermined value, the trigger for event generation is used, but the determination is made using the respective magnitudes of each component Gx, Gy and Gz of the acceleration. May be good. For example, there is a trigger when the pattern of temporal change of the value of each component adopts a predetermined pattern, such as when Gx exceeds a predetermined threshold value and then Gy exceeds a predetermined threshold value within a predetermined time. It may be determined that it has occurred). Further, the determination may be made in consideration of the acceleration Gz in the Z direction (vertical direction).

The change in acceleration exceeding the threshold acceleration Gs may be, for example, when a sudden brake is applied or when a sudden steering wheel is applied. FIG. 5 is a diagram showing a change in acceleration in the case of a steep steering wheel, 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 steering wheel is started to be turned at time t3, the G sensor 12 mainly detects the left-right acceleration (Gy) of the vehicle, and the acceleration changes. The acceleration (G data) from the G sensor 12 gradually increased from time t3 (that is, the acceleration in the direction opposite to the turning direction of the vehicle increased), and it became the threshold acceleration Gs (for example, 0.3 G). At the time (time tp), the first control unit 11 recognizes it as a trigger, determines that an event has occurred, takes an image of the CCD camera 20, and constantly periodically stores the image in the first memory 108. It operates so as to store the time tp in the memory card 25 and store the time tp 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 turning direction of the vehicle decreases), and then suddenly decreases. , After the zero point, it further decreases (that is, the acceleration of the vehicle in the bending direction increases), becomes a local minimum (minimum value), and then increases instead of increasing (that is, the acceleration of the vehicle in the bending direction decreases). , When the vehicle has finished turning and the steering wheel has been turned (that is, the steering wheel has been returned) (time t4), it becomes zero.

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

FIG. 6 is a diagram showing changes in acceleration in the case of a vehicle collision, and shows time-series changes in G data (combined values 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 acceleration in the front-rear direction (Gx) and the acceleration in the left-right direction (Gy) of the vehicle, respectively. The acceleration (G data) from the G sensor 12 rapidly increases immediately after time t5, and after repeating a rapid increase / decrease in which it decreases further, it rapidly increases and becomes the threshold acceleration Gs (for example, 0.3 G). At that time (time tp), the first control unit 11 recognizes it as a trigger, determines that an event has occurred, takes an image of the CCD camera 20, and always periodically stores the image in the first memory 18. Is stored in the memory card 25, and the time tp is stored in the memory card 25 as event occurrence determination time data.

Specifically, as in FIG. 4, 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.

After the time tp, the acceleration increases, decreases sharply after reaching the maximum value (maximum value), rapidly increases after reaching the minimum value (minimum value), passes through the zero point, and reaches the maximum again. After reaching the value (maximum value), it decreases sharply, passes through the zero point again, repeats rapid increase and decrease, and then stops and becomes zero when the acceleration converges (t6).

In FIG. 6, the period Th from the time t5 to the time tp is the “period of the impact before a large impact”, and the impact waveform due to the impact reduction due to the effect of the bumper or guardrail of the vehicle appears in this period Th. Further, the period Ti from the time tp to the time t6 is the period of "impact behavior".

7, 8 and 9 are diagrams showing a display example of the event display screen displayed on the display unit of the operation management device 30, and FIG. 7 is a diagram before excluding the event at a specific point from the display target. The screen, FIG. 8 is an operation screen for excluding the event at a specific point from the display target, and FIG. 9 is a screen after excluding the event at the specific point from the display target. In this display example, the memory card 25 mounted in the drive recorder 10 and recording the operation information including the camera image and the image-related information is taken out and displayed on the display unit 32 of the operation management device 30 at a specific point. This is an example of the case where the operation management device 30 performs an operation of excluding the event of the above from the display target.

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

When excluding the event at a specific point from the display target, the operation screen of FIG. 8 is displayed. This display operation is performed, for example, by moving the pointer to a specific point surrounded by a square displayed on the map or the part of the image 56 on the screen and performing a click operation, or by inputting with a keyboard. .. In this display screen, an image 56 showing 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, and in FIG. 8, since the occurrence position of the event <4> is within the range of the specific point B, the event <4> is selected. Next, when the event <4> is excluded from the display target based on the operator's judgment such as the level of the event <4> and the past driving experience, it 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 in which the event <4> is excluded from the display target after the above operation.

FIG. 10 is a diagram showing a schematic configuration of the 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. It is composed of an operation management device 70 for determining the time when an event occurs using the above and displaying and managing the event.

In this embodiment, the operation information is continuously acquired at predetermined fixed time intervals 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 recorded operation unit is from engine on to off. Further, as a constant 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 means for determining the occurrence time of the event and the second determination unit 77 as the second determination means for determining the occurrence of the abnormal state are operation management devices. It is provided in the second control unit 71 of 70. The CCD camera 20 captures one image every 50 to 100 milliseconds, and sequentially stores the captured image together with the time data in the first memory 18. The stored image data may be recorded on the memory card 65 as it is, or the rate of change 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 rate of change. .. Further, the moving image taken by the CCD camera 20 may be stored in the memory card 65. Except for the above parts, the configurations of the drive recorder 60 and the operation management device 70 are the same as those of FIG.

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

The display image in the operation management device 70 can be a display image similar to the display example of FIGS. 7 to 9, but other display methods are also possible. FIG. 11 is a map screen showing an example of the display screen. On 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 Table 81, the level of the event is indicated by H or L, and the number of occurrences of the same event at the same point in a predetermined period is also indicated.

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 goes downward from the upper part of the map screen, and the traveling direction is indicated by an arrow in Table 82.

As another display method, it is also possible to display all the events that occurred within the range of the map displayed in a certain period at once for each point and for each event type. As described above, when the event information is displayed in the form of a table on the map screen, the operation of excluding the event at a specific point from the display target by using the cancel function can be performed as follows, for example. can. One method is to display a specific point at the same time as the event occurrence point on the map screen as in the map screen of Fig. 7, and move the pointer to the event in the specific point and click it to remove it from the display. Another way to set it is to move the pointer to an event in the table or an event on the map and click to display whether the event occurrence point is within a specific point and within the specific point. If it is in, a cancel button is displayed to enable cancellation. It is also possible to realize the cancel function by inputting an event number or the like with the keyboard.

<Modification example>
The present invention is not limited to the contents described in the above-described embodiment of the present invention, and various modifications can be made. As a modification thereof, for example, the following may be carried out.

(1) In the above-described embodiment, when the value (magnitude) of the G data output from the G sensor 12 reaches the threshold acceleration Gs (time tp) is recognized as a trigger, and it is determined that an event has occurred. However, the trigger is not limited to this, and for example, when the value (magnitude) of the angular acceleration data output from the gyro sensor 13 or the pressure / altitude data output from the pressure sensor 14 reaches a predetermined value, it is recognized as a trigger. , It may be determined that an event has occurred. Further, it may be determined that the event has occurred from the result of analyzing the recorded video.
In addition, when the emergency switch of the first operation unit 17 is pressed, when there is a signal 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 event may be generated when a command is received by RS-232C).

(2) As a method of displaying images related to an event, from the images of a predetermined period stored for each event, for each event such as sudden braking, sudden steering, and vehicle collision, at four time points before and after the event. It is possible to display captured images, select and display a plurality of images captured at a plurality of different time points other than the four time points, and the like. Further, for a plurality of different time points, various combinations may be used depending on the type of event, but it is preferable to use a combination of time points at which the characteristics of the event appear (a specific period within a predetermined period).
For the combination at the time when the characteristics of the event appear, various data such as "data for detecting the behavior of the vehicle" and "data regarding the functional state of the vehicle" stored in the memory card 25 together with the image data are used alone or in combination. , It is preferable to select a plurality of images taken at an appropriate timing based on the data and display the selected images.

The "data that detects the behavior of the vehicle" may be, for example, acceleration data, angular acceleration data, barometric pressure / altitude data, video analysis data, or the like. Further, the "data related to the functional state of the vehicle" is, for example, data related to any operation of the brake, blinker, accelerator, handle rotation, shift lever position, and side brake during vehicle driving, 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, information different from the information used for determining that an event has occurred (for example, G data (Gy) in the left-right direction of the vehicle by a sudden steering wheel) (for example, a vehicle due to sudden braking). The image captured at the time when the G data (Gx) in the front-rear direction of the above reaches a predetermined value (for example, a maximum value) may be selected and displayed. As a result, when the information different from the information used for determining that the event has occurred (for example, G data (Gy) due to sudden steering) and the information different from the information (for example, G data (Gx) due to sudden braking) reaches a predetermined value. Images related to the event can be easily found.

(4) Not limited to the above-described embodiment, the G data has a maximum value, for example, going back from the time (time tp) when it is determined that an event has occurred when the value (magnitude) of the G data becomes the threshold acceleration Gs. Sub-events that caused events such as when the value reaches a minimum, when the G data changes over time, and when the G data undergoes characteristic changes such as rapid increases and decreases in a short period of time. The image captured at the time of estimating the time of occurrence of the above may be selected and displayed. This makes it easy to find an image related to the event at the time of estimating the time of occurrence of the sub-event that caused the occurrence of the event, for example, the time of characteristic change such as a sudden increase or decrease of G data. 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 of. For example, it may be incorporated as a function of a navigation device, 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 can be used in a general-purpose personal computer, mobile phone, smartphone, or portable game machine. Download to a mobile terminal such as, have the computer mounted on the mobile terminal execute the control process of the second control unit 31 or 71, and read the image and various data stored in the memory card 25 or 65 to read. An image created from a computer or various data may be displayed.

(7) Each function of the above embodiment is realized by describing the function in a computer-readable programming language and causing the computer of the second control unit 31 or 71 to execute the program. The program is not limited to the above, and for example, the program may be distributed and distributed on a plurality of computers to perform distributed processing.

10, 60 Drive recorder 11, 61 First control unit 12 Accelerometer (G sensor)
13 Gyro sensor 14 Barometric pressure sensor 15 GPS antenna 16 GPS receiver 17 1st operation unit 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 judgment unit 27, 77 Second judgment unit 30, 70 Operation management device 31, 71 Second control unit 32 Display unit 33 Output unit 34 2nd operation unit 35 2nd memory 36 2nd IF (interface)
37 Image processing unit 38 Display processing unit 50 Map screen

Claims (4)

When the condition for event occurrence is satisfied, if the event occurrence point is not within the range of a specific point, the device determines that the time point is the event occurrence time point and records the operation information in the recording means.
Even if the event occurrence point is within the range of a specific point, it is determined whether or not the abnormal state occurs by judging whether or not the operation information is similar to a predetermined pattern, and the abnormal state is determined. If the above applies, it shall be provided with a function to determine that the time point is also the time point when the event occurs and record the operation information in the recording means.
An operation information recording device characterized by. When it is determined that the abnormal state has occurred, the operation information at the time of occurrence of the abnormal state is determined to be the time of occurrence of the event regardless of whether or not the event occurrence point is within the range of the specific point. Recording operation information in the recording means
The operation information recording device according to claim 1. The pattern is a combination of amplitude and frequency components of acceleration data, or a pattern of these data and velocity data.
The operation information recording device according to claim 1 or 2. A program for operating a computer as an operation information recording device according to any one of claims 1 to 3.

Images