JP2023093569A - Operation management system - Google Patents

Abstract

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

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 or an accident occurs during operation of a vehicle.

Conventionally, using a drive recorder, based on driving data obtained from an acceleration sensor or speedometer installed in the vehicle, when a dangerous situation such as sudden braking or steering or an accident such as a rear-end collision occurs, An operation management system is used that records and displays operation information including location information and image information captured by an in-vehicle camera for a predetermined period before and after the occurrence of an event (phenomenon). Normally, when a predetermined value of travel data exceeds a predetermined threshold, it is determined that an event has occurred, and the recorded data of the operation information is held, and then the operation information related to the event is displayed. is being done.

Japanese Patent Application Laid-Open No. 2002-200003 discloses that a predetermined threshold value of driving data or the like used as a criterion for determining that an event has occurred is displayed at the same time as image information photographed at the time of event occurrence, and furthermore, setting for changing the threshold value is performed. 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 conditions for an event in which an image should be recorded.

In Patent Document 2, after detecting the occurrence of an event, it is monitored whether or not a specific vehicle state normally occurs due to an accident or the like, and if the vehicle state does not occur, the occurrence of the event is invalidated. A method is described for adding information indicating this to the image information and lowering the priority of holding the recorded data. As a result, it is possible to prevent important image data from being erased due to overwriting of event information in the memory due to malfunction determination, and to facilitate identification of important image data.

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

If the setting of the driving data threshold, which is the criterion for judging the occurrence of an event, is inappropriate, it will be mixed in with important events related to accidents, etc., and will occur even in ordinary vehicle driving that is not worthy of attention. Operation information in such a running state is recorded and held as an event and displayed, resulting in a problem of reduced attention to important events.

Generally, when traveling on a road, depending on the shape of the road and surrounding conditions, there are places where sudden braking or sudden acceleration is likely to occur. may be determined to occur frequently. It is desirable to exclude such operation information in a driving state that is not determined to be important and is not related to an accident from display targets as events.

In the method described in Patent Literature 1, when unimportant events occur frequently at the same point, it is necessary to reset the threshold each time the event occurs. Therefore, there is no choice but to judge all points with the same threshold value, and there is a problem that it is not possible to deal with situations peculiar to each point.

In the method described in Patent Literature 2, when an event occurs, it is necessary to always monitor the subsequent state and add invalid information, so the processing becomes complicated. Similarly, it is not possible to specify a point and set a threshold for event occurrence.

As described above, in the conventional operation management system, the determination of the occurrence of an event is made in common at all points almost unambiguously, and is displayed as a display target. It was not easy to add the driver's subjective judgment based on driving history.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide an operation management system capable of excluding operation information at a specific point that should not be determined as an event from being displayed. is to provide

In a first aspect, the present invention provides: first determination means for determining a time point at which a predetermined event occurs using operation information, which is information regarding operation of the vehicle including recorded information regarding the position of the vehicle; and 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 occurring at the specific point is displayed from the display target of the event display means. To provide an operation management system characterized by having a cancel function to exclude.

Therefore, for example, even if the operation information when traveling at the selected specific point is operation information corresponding to the time when the event occurred, the operation information at that time is not displayed. If the cancellation function of the present invention is used, for example, should the driver consider the road conditions, vehicle type, past operation information, and own past driving experience at that point, and display that point as an event occurrence point? It becomes possible to add a judgment of whether or not. The operation information at the time of event occurrence is operation information for a predetermined period including at least the event occurrence time. and so on.

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

In a third aspect, the present invention provides the operation management system according to the first or second aspect, further comprising point registration means for registering the specific point, and by the point registration means, before operation of the vehicle, It is characterized in that it is possible to register the specific spot. Although it is possible to set the specific point based on the number of times an event unrelated to the accident has occurred, the invention of this aspect enables the registration of the specific point in advance. It is.

For example, it is possible for the driver to set the point in advance by considering the road conditions, vehicle type, past operation information, and his/her past driving experience at that 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 type of vehicle, the driver, the number of past event occurrences, and the like.

In a fourth aspect of the present invention, in the operation management system according to any one of the first to third aspects, the specific point is set as a range including a road, and the position detection means mounted on the vehicle Information about the position is obtained based on the data, and whether or not the vehicle is at the specific point is determined based on the information about 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. , is determined based on the set range and data from 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 nearby roads where there is a possibility that an event has occurred, it is possible to determine that the point is the same even if the positions are slightly shifted.

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

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

For example, it can be performed by comparing the combination of amplitude and frequency components in three coordinate axes of acceleration orthogonal to each other, or their data and velocity data, with a preset data pattern. This enables appropriate determination processing to be performed. In addition, by using the cancellation function at the specific point and making the determination by the second determination means while the vehicle is running, it is possible to appropriately determine the occurrence of an event each time, and record the information to be recorded. capacity can be reduced.

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 continuously acquired at predetermined time intervals while the vehicle is operating. It is characterized in that, after the operation, it is possible to set or change the judgment condition in the first judging means and to 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 can determine whether or not an accident has occurred and the degree of risk of the actual driving by setting a threshold for event occurrence in the first determination means after driving. Considering this, it becomes possible to more appropriately determine the event occurrence time point. Also, after operation, it is possible to decide whether or not to use the cancel function, and to select events to be displayed.

Specifically, for example, the vehicle-mounted device continuously acquires operation information at predetermined time intervals and stores it in a memory device such as a memory card. 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 navigation device or a drive recorder main body to which a display device can be connected or built-in. In addition, since all the operation information during operation is stored until after the operation, operation information that should be regarded as an event occurrence is not deleted inappropriately.

In an eighth aspect of the present invention, the operation management system according to any one of the first to seventh aspects has map display means for displaying map information and a map, and the event display means causes the event to occur. It has a function of displaying a point and the specific point on a map, and has 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 this aspect, by displaying the event occurrence point and the specific point on the map, it is possible to easily grasp those points. 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 events from display objects is simplified.

According to a ninth aspect of the present invention, 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 location of the event on the map and the type of event and the level of risk, etc., the event can be identified more concretely, and it is possible to determine whether or not to use the cancellation function at a specific location. can be done better. For example, event types include occurrence of acceleration exceeding a predetermined value or sudden deceleration, and event levels include the rate of acceleration or speed change exceeding a predetermined value.

In a tenth aspect of the present invention, in the operation management system according to the eighth or ninth aspect, the event display means has a function of displaying the number of occurrences of the event at the point where the event occurred during a predetermined period. characterized by having In the invention of this aspect, since the operation information and the number of occurrences of the event can be displayed in relation to the location where the event occurs, it is possible to easily grasp the location 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 cancellation function in consideration of the content of the event and the number of occurrences. As a method of displaying the number of occurrences, it is also possible to use symbols or different colors instead of using numbers.

In an eleventh aspect of the present invention, in the operation management system according to the tenth aspect, the event display means displays the type of the event at the point where the event occurred in a predetermined period and the occurrence of each type of event. It is characterized by having a function of displaying the number of times. It displays not only the total number of occurrences of events but also the number of occurrences 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 to select whether or not to use the cancel function more appropriately.

In a twelfth aspect of the present invention, in the operation management system according to any one of the eighth to eleventh aspects, the event display means comprises an event-related operation 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, it becomes easier to see the operation information related to the event, more information can be displayed, etc., so that the cancellation function can be used. It is possible to appropriately select whether or not

According to a thirteenth aspect of the present invention, in the operation management system according to the twelfth aspect, the table is displayed as a different table depending on the traveling direction of the vehicle at the time of occurrence of the event. As described above, the possibility of occurrence of an event depends on the traveling direction of the vehicle even at the same location. It is possible to easily grasp the information of the event with respect to the traveling direction.

In a fourteenth aspect, the present invention provides a program for causing a computer to 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 from being displayed.

1 is a diagram showing a schematic configuration of an operation management system according to Embodiment 1; FIG. FIG. 4 is a diagram showing an example of a procedure for judging an event at a specific point; FIG. 2 is a diagram conceptually showing the data structure of contents recorded on a memory card; The figure explaining the state 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 steering wheel. The figure which shows the acceleration change in the case of a vehicle collision. FIG. 10 is a diagram showing a display example of an event display screen, and is a screen before excluding an event at a specific point from the display target. FIG. 10 is a diagram showing a display example of an event display screen, and is an operation screen for excluding an event at a specific point from the display target. FIG. 10 is a diagram showing a display example of an event display screen, and is a screen after excluding an event at a specific point from display targets. 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 examples shown in the drawings. This does not limit the invention. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant descriptions thereof are omitted.

FIG. 1 is a diagram showing a schematic configuration of an operation management system according to a first embodiment. As shown in FIG. 1, the operation management system of this embodiment includes a drive recorder 10 mounted on a vehicle, a memory card 25 for storing operation information when an event occurs in the drive recorder 10, and a and an operation management device 30 for displaying and managing 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 for positioning the vehicle's GPS position information from the GPS signal received by the GPS antenna 15. (Global Positioning System) A memory card 25 having a receiver 16, a first operation unit 17 including switches, buttons, etc., a first memory 18 for temporarily storing images, and a slot for inserting a memory card 25. A first IF (interface) 19 for writing information etc. 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 electric power to each of the 10 elements.

Further, the drive recorder 10 may be configured to cooperate with a navigation device (not shown) so that images can be reproduced on the display of the navigation device. Furthermore, the GPS receiver 16 is not an essential component, 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 composed of a microcomputer or the like including storage devices such as a CPU, ROM, and RAM, and controls the overall operation of the drive recorder 10 . Further, the first control unit 11 uses operation information including position information obtained from GPS signals, travel data obtained from the various sensors and vehicle signals described above, and image information obtained from a CCD camera to determine the time of occurrence of a predetermined event. It has a first judging section 26 which is a first judging means for judging. The first determination unit 26 is configured as part of the microcomputer or the like.

The above operation information excluding the image information is temporarily stored in the storage device within the first control unit 11, and the data used by the first determination unit 26 are sequentially read out and used to determine the time of occurrence of the event. be. In addition, the first control unit 11 causes the CCD camera 20 to pick up one image every 100 milliseconds, and sequentially and cyclically stores the picked-up images together with time data in the first memory 18 (a memory card to be described later). 25 (temporary storage). For example, image data for 24 seconds (240 images) captured by the CCD camera 20 is always stored in the first memory 18 . Note that the image captured by the CCD camera 20 may not be one image every 100 milliseconds, but may be one image every 50 milliseconds, for example. Also, it may be configured to store moving images captured by the CCD camera 20 .

The G sensor 12 detects acceleration in two mutually orthogonal directions (X-axis and Y-axis), 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 10 milliseconds, for example, and determine the acceleration value (magnitude) from the G data.

Gx indicates acceleration in the X-axis direction (vehicle front-rear direction), and Gy indicates acceleration in the Y-axis direction (vehicle left-right direction). Further, the G sensor 12 may use a 3-axis sensor in addition to the Z-axis direction (vehicle vertical direction). Also good.

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

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

The vehicle signal acquisition unit 21 is connected to a failure diagnosis connector of the vehicle, acquires various signals and information (vehicle data) of the vehicle, for example, at intervals of 100 milliseconds, and uses the acquired vehicle data together with the time data for the first control. Send to section 11. Vehicle data includes, for example, [1] a signal that detects a brake operation during vehicle operation, [2] a signal that similarly detects a blinker operation, [3] a signal that similarly detects an accelerator operation, and [4] a signal that similarly detects a steering wheel rotation. Detected signals, [5] Signals that similarly detect the shift lever position, [6] Signals that similarly detect the side brake operation, and [7] 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 vehicle's ECU (Electronic Control Unit), external networks, etc.) communication data from other vehicles, etc.).

As an example, when the vehicle signal acquisition unit 21 acquires a signal that detects a brake operation, the vehicle signal acquisition unit 21 acquires brake operation data indicating whether or not the brake of the vehicle has been operated, and brake operation start time data indicating the time when the brake operation was 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, 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 the brake operation has been performed, the time at which the brake operation was started, and It is possible to determine the time when the braking operation is terminated.

As another example, when the vehicle signal acquisition unit 21 acquires a signal indicating that the steering wheel has been rotated, the vehicle signal acquisition unit 21 acquires steering wheel rotation data indicating whether or not the steering wheel of the vehicle has been rotated, and steering wheel rotation start data indicating the time at which the steering wheel rotation was started. Time data and steering wheel rotation end time data indicating the time when the steering wheel rotation is ended 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 the steering wheel is rotated, the time when the steering wheel rotation is started, and the It is possible to determine the time when the steering wheel rotation is finished.

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

Specifically, when a predetermined condition is satisfied (that is, when an event that should be recorded by the drive recorder 10 occurs), the first determination unit 26 in the first control unit 11 of the drive recorder 10 (a) G data output from the internal G sensor 12 due to an impact applied to the vehicle due to sudden braking, sudden steering, a 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 has occurred. This determination is realized by the processing executed by the 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-odd 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 as one piece of operation information. to record.

The operation information recorded on the memory card 25 includes G data output from the G sensor 12, angular acceleration data output from the gyro sensor 13, pressure/altitude data output from the pressure sensor 14, and positioning data obtained by the GPS receiver 16. It includes GPS position information, camera image data captured by the CCD camera 20, various vehicle signals and information 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 corresponds to a plurality of camera images one by one from several seconds to ten-odd seconds (for example, 15 seconds before, 5 seconds after, etc.) before and after an event to be recorded occurs and a trigger is detected. Various data of operation information are recorded in the memory card 25.

The memory card 25 is a rewritable non-volatile semiconductor memory card having a storage capacity of 2 Gbytes. This memory card 25 is inserted into a slot constituting the first IF 19, and a predetermined image (for example, an An image for 15 seconds before the time of occurrence and an image for 5 seconds after the time of 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 the stored operation information including the image at the time of event occurrence is transferred to the operation management device. output to device 30;

Although a semiconductor memory card is used as the memory card 25, it is not limited to this, and a semiconductor memory other than the card type, a portable hard disk (HD), other storage media, etc. can be used. Moreover, 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 includes a second control unit 31, a display unit 32 configured by a display, etc., and a display screen in order to realize event display means for displaying operation information at the time of event occurrence and to output other information. A second operation unit 34 including input devices such as a keyboard and a mouse, a second memory 35 for temporarily storing images, and a memory card 25 are inserted. and a second IF (interface) 36 for reading images from the memory card 25, an image processing unit 37 for performing predetermined image processing on input images, and the like. Operation information at the time of event occurrence is displayed on the display unit 32 .

The second control unit 31 is a personal computer (PC) that includes a CPU, a ROM, a RAM, and the like, and is a personal computer (PC) in which operation management software is installed. It operates each component of and realizes various functions.

Further, when the operator can register a specific point and the operation information at the time of occurrence of the event is the operation information generated during traveling at the specific point, the operation management device 30 displays the operation information as an event. It is configured so that it can be excluded from the targets of the above, that is, a cancel function can be realized. Specifically, a specific point is registered by specifying it on the displayed map or by inputting latitude and longitude data using a keyboard, mouse, etc., through the second operation unit 34 .

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, etc. of the second operation unit 34 .

Data of 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 in the first control unit 11, the event is detected by the first determination unit 26 at the specific point. It is also possible to exclude an event determined to have occurred from the event target. That is, in this case, the operation information about the event is controlled so as not to be the operation information to be recorded in the memory card 25 .

Also, in this case, as shown in FIG. 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 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 microcomputer or the like, and the determination is realized by the 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 display the event. The determination by the second determination unit can be made based on whether or not the operation information resembles a predetermined pattern indicating the occurrence of an abnormal state.

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

FIG. 2 shows an example of a flow chart of the procedure when the first control unit 11 having the second determination unit 27 determines an event at a specific point as described above. First, the operation information necessary to determine when an event occurs is read. Next, the first determination unit 26 determines whether or not the conditions for the occurrence of the event are 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 point in time is read. When the event generation condition is established, it is determined whether or not the event generation point is within the range of the registered specific points. If the event occurrence point is not within the range of the specific point, the time of the operation information is determined as the event occurrence time, and the operation information is recorded in the memory card 25.例文帳に追加If the event occurrence point is within the range of a specific point, the second determination unit 27 determines whether or not the operation information resembles a predetermined pattern. determine whether or not to If it does not correspond to an abnormal state, the occurrence of the event is canceled and the process returns to the beginning, and the operation information at the next point in time is read. If 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. - 特許庁In this way, by using the cancel function at a specific point and making the determination by the second determination unit 27 while the vehicle is running, it is possible to make an appropriate determination of the occurrence of an event each time. The amount of information to be recorded can be reduced.

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

As shown in FIG. 3, the memory card 25 records the operation information corresponding to each occurrence of each event, classified into operation information 1, operation information 2, and operation information 3. FIG. 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 camera images. Configured. The image related information includes main item data including G data and time data at the time of event occurrence, and related data 1 to 240 corresponding to 240 camera images 1 to 240, respectively. Operation information 2 and 3 are the same.

Main item data includes G data, angular acceleration data, atmospheric pressure/altitude data, and their respective time data. (Detection data such as brake operation and steering wheel rotation, vehicle speed data, etc.), including GPS position information of the vehicle.

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

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

The value (magnitude) of the G data output from the G sensor 12 rapidly increases from almost zero from the moment the vehicle is impacted. Then, as shown in FIG. 4A, at time tp, when the value (magnitude) of the G data of the G sensor 12 reaches the threshold acceleration Gs (for example, 0.3 G) (time tp), the second The first determination unit 26 of the 1 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 temporarily stored in the first memory 18 cyclically in the memory card 25, and also stores the time tp as event occurrence determination time data. It operates so as to be stored in the memory card 25 as .

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

When an event such as an impact on the vehicle occurs as described above and the value (magnitude) of G data detected by the G sensor 12 exceeds a predetermined threshold value, the first control unit 11 is event occurrence time data (tp), G data (Gx, Gy) detected by the G sensor 12 and its time data, angular acceleration data detected by the gyro sensor 13 and its time data, atmospheric pressure/altitude data of the atmospheric pressure sensor 14 and its 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 their time data (for example, brake operation data and its time data, steering wheel rotation data and its time data, vehicle speed data and its time data, etc.) are stored in the memory card 25 together with the image data. Note that the memory card 25 may be configured to store only part of the data described above.

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

It should be noted that when the above-described event occurs, exceeding the threshold acceleration Gs is used as a trigger for event occurrence. It may be recognized that an event has occurred when the value (magnitude) of the data changes by 0.1 G or more. Also, in the above example, the trigger for event generation is when the combined value of Gx and Gy exceeds a predetermined value, but the magnitude of each of the acceleration components Gx, Gy, and Gz can be used for determination. good too. For example, after Gx exceeds a predetermined threshold, Gy exceeds a predetermined threshold within a predetermined period of time. A trigger is present (event occurrence). In addition, the acceleration Gz in the Z direction (vertical direction) may also be taken into account for determination.

Acceleration changes exceeding the threshold acceleration Gs are caused by, for example, sudden braking or sudden steering. FIG. 5 is a diagram showing changes in acceleration in the case of abrupt steering, showing time-series changes in G data (synthetic value of Gx and Gy) output from the G sensor 12. In FIG.

As shown in FIG. 5, when the steering wheel starts to be turned sharply 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 time t3 (that is, the acceleration in the direction opposite to the direction in which the vehicle is turning increases), reaching a threshold acceleration Gs (eg, 0.3 G). At time (time tp), the first control unit 11 recognizes this as a trigger, determines that an event has occurred, captures the image captured by the CCD camera 20, and always cyclically stores the image in the first memory 108. The data is stored in the memory card 25, and the time tp is stored in the memory card 25 as event occurrence determination time data.

After time tp, the acceleration continues to increase, reaches a local maximum (maximum value), then changes to a decrease and gradually decreases (that is, the acceleration in the direction opposite to the turning direction of the vehicle decreases), and then suddenly decreases. , after passing the zero point, it further decreases (i.e., the acceleration in the direction in which the vehicle is turning increases), reaches a local minimum (minimum value), changes to an increase, and then increases rapidly (i.e., the acceleration in the direction in which the vehicle is turning decreases). , becomes zero when the vehicle has finished turning and the steering wheel has been turned (that is, the steering wheel has been returned) (time t4).

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 changes in acceleration in the case of a vehicle collision, showing time-series changes in G data (composite value of Gx and Gy) output from the G sensor 12. In FIG.

As shown in FIG. 6, when the vehicle collides with something at time t5, the G sensor 12 detects and changes the longitudinal acceleration (Gx) and lateral acceleration (Gy) of the vehicle. The acceleration (G data) from the G sensor 12 rapidly increases immediately after time t5, and after repeating a rapid decrease of further rapid decrease, it rapidly increases to reach the threshold acceleration Gs (for example, 0.3 G). (time tp), the first control unit 11 recognizes it as a trigger, determines that an event has occurred, captures the image captured by the CCD camera 20, and cyclically stores the image in the first memory 18 at all times. 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 an image PA for TA seconds before time tp and an image PB for TB seconds after time tp.

After the time tp, the acceleration also increases, reaches a local maximum (maximum value), then rapidly decreases, passes through the zero point, reaches a local minimum (minimum value), then rapidly increases, passes through the zero point, and again reaches a local maximum. After reaching the value (maximum value), it rapidly decreases, passes through the zero point again, and after repeating the rapid decrease, the vehicle stops and becomes zero at the time (t6) when the acceleration converges.

In FIG. 6, a period Th from time t5 to time tp is a "period of impact before a large impact", and in this period Th, an impact waveform appears due to impact reduction due to the effects of bumpers and guardrails of the vehicle. A period Ti from time tp to time t6 is a period of "impact behavior".

7, 8, and 9 are diagrams showing display examples of the event display screen displayed on the display unit of the operation management device 30, and FIG. FIG. 8 is an operation screen for excluding an event at a specific point from being displayed, and FIG. 9 is a screen after excluding an event at a specific point from being displayed. In this example of display, the memory card 25 mounted in the drive recorder 10, on which operation information including camera images and image-related information is recorded, is taken out, displayed on the display unit 32 of the operation management device 30, and displayed at a specific point. 2 shows an example of a case where the operation management device 30 performs an operation for excluding the event from the display target.

In FIG. 7, on the map screen 50 displayed in the lower right, four events <1> to <4> occurring within the range within a certain period of time are displayed on the map screen 50. 4 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 of time can be, for example, within one year, within several months, within several weeks, or the like. Also, 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 the event occurred is displayed in the lower left image 53, and the temporal acceleration of the event before and after the event is displayed. changes are displayed in the image 54 on the lower side. Further, on the map screen 50, specific points A and B registered within the range are displayed.
In FIG. 7, only one image of each event at the time of occurrence of the event is displayed. It is also possible to display a plurality of images per second in chronological order in the portion of the image 55 that is a space in FIG.

When excluding an event at a specific point from the display targets, 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 a portion 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, the event <4> occurs within the range of the specific point B, so the event <4> is selected. Next, when excluding the event <4> from the display targets based on the operator's judgment such as the level of the event <4> and past driving experience, an image 57 between the image 56 and the map screen 50 is displayed. press the Cancel button. As a result, event <4> is excluded from display targets. FIG. 9 is an image showing a state in which event <4> is excluded from the display targets after the above operation.

FIG. 10 is a diagram showing 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 for storing operation information in the drive recorder 60, and operation information stored in the memory card 65. and an operation management device 70 for judging the event occurrence time using , and for displaying and managing the event.

In this embodiment, the operation information is continuously acquired at predetermined time intervals while the vehicle is running, and all of 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. Also, as the constant time interval, for example, several milliseconds to several tens of milliseconds can be selected. In this embodiment, the first determination unit 76 as first determination means for determining the time of occurrence of an event, and the second determination unit 77 as second determination means for determining the occurrence of an abnormal state are provided by the operation management apparatus. 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 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. . In addition, it is also possible to store moving images captured by the CCD camera 20 in the memory card 65 . The configuration of the drive recorder 60 and the operation management device 70 is the same as that of FIG. 1 except for the above.

The method of determining the event occurrence time point based on the operation information in the first determination unit 76 and the second determination unit 77 is the same as in the first embodiment. , it is possible to set or change the determination conditions in the first determination unit 76 . It is also possible to choose whether or not to use the cancel function at a particular point after the trip.

The display image in the operation management device 70 can be the display image similar to the display examples 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 the table 81, the event level 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, a table 82 displays three events that occurred in a predetermined period at the point of event <2>. This event occurs when the direction of travel of the vehicle goes from the top to the bottom of the map screen, and the direction of travel is indicated by an arrow in Table 82 .

As another display method, it is also possible to collectively display the number of occurrences of all events that have occurred within the range of the displayed map during a certain period, for each point and for each type of event. As described above, when event information is displayed in the form of a table on the map screen, an operation to remove the event at a specific point from the display target using the cancel function can be performed, for example, as follows. can. One method is to display a specific point on the map screen at the same time as the event occurrence point in the same way as the map screen in FIG. Another method is to move the pointer to an event in the table or an event on the map and click to display whether or not the event occurs within a specific point. If it is in , it is a method to display a cancel button and make it cancelable. Also, it is possible to realize a cancel function by inputting an event number or the like with a keyboard.

<Modification>
The present invention is not limited to the description of the embodiments of the present invention described above, and various modifications are possible. As a modification thereof, for example, it may be implemented as follows.

(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), it is recognized as a trigger, and it is determined that an event has occurred. However, not limited to this, 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. Also, it may be determined that an 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 the external port, and communication from external equipment such as AVM-ECU (Automatic Vehicle Monitoring-Engine Control Unit) (for example, The event may be generated when a command is received via RS-232C).

(2) As a method of displaying images related to an event, for each event such as sudden braking, sudden steering, or vehicle collision, four images before and after the event are selected from the images for a predetermined period stored for each 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 four time points, and the like. Further, the plurality of different points in time may be combined in various ways depending on the type of event, but it is preferable to use a combination of points in time at which the characteristics of the event appear (a specific period within a predetermined period).
The combination of the points in time when the characteristics of the event appear can be determined by using 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, either singly or in combination. , based on these data, a plurality of images shot at appropriate timing may be selected and the selected images may be displayed.

The "data obtained by detecting the behavior of the vehicle" may be, for example, acceleration data, angular acceleration data, air pressure/altitude data, video analysis data, and the like. In addition, the "data regarding the functional state of the vehicle" includes, for example, data regarding the operation of any of the 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, information different from the information used to determine that an event has occurred (for example, G data (Gy) in the lateral direction of the vehicle due to sudden steering) It is also possible to select and display an image captured at the time when the G data (Gx) in the front-rear direction of the image reaches a predetermined value (eg, maximum value). As a result, when information (eg, G data (Gx) due to sudden braking) different from information (eg, G data (Gy) due to abrupt steering) used to determine that an event has occurred reaches a predetermined value. Images related to events can be easily found.

(4) The value (magnitude) of the G data is not limited to the above-described embodiment. Sub-events that caused the occurrence of events such as the time when the value becomes a minimum value, the time when the G data becomes an inflection point in the time series change, and the time when the G data undergoes a characteristic change such as repeated rapid decrease in a short period of time. may be selected and displayed. As a result, it is possible to easily find an image related to an event at the time of estimating the time of occurrence of a sub-event that caused the occurrence of the event, such as the time of a characteristic change such as a rapid decrease in G data. can.

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

(6) Not limited to the above-described embodiment, the control program pre-stored in the ROM of the second control unit 31 or 71 of the operation management device 30 or 70 can etc., and cause the computer mounted on the mobile terminal to execute the control processing of the second control unit 31 or 71, and read the image and various data stored in the memory card 25 or 65. Alternatively, an image generated from the data or an image created from various data may be displayed.

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

10, 60 drive recorder 11, 61 first control unit 12 acceleration sensor (G sensor)
13 gyro sensor 14 atmospheric pressure sensor 15 GPS antenna 16 GPS receiver 17 first operation unit 18 first memory 19 first 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 (6)

The first screen, which is the screen before excluding the event at the specific point from the display target, is shifted to the second screen, which is the operation screen for excluding the event at the specific point from the display target, and the second screen is displayed. Equipped with a function to shift from the screen to the third screen, which is the screen after excluding the event at a specific point from the display target
An operation management system characterized by displaying map screens on the first screen, the second screen, and the third screen;
providing a function of displaying on the map screen the occurrence points of events that have occurred within a predetermined period of time within the range of the map screen of the first screen;
The operation control system according to claim 1, characterized by: The first screen has a function of displaying, in chronological order, a plurality of images in a certain period before and after the occurrence of the event.
The operation control system according to claim 1 or 2, characterized by: The transition from the first screen to the second screen is performed based on a click operation performed by moving the pointer to a specific point on the map displayed on the first screen.
The operation control system according to any one of claims 1 to 3, characterized by: The transition from the second screen to the third screen is performed based on the cancellation operation for the event selected on the second screen.
The operation management system according to any one of claims 1 to 4, characterized by: A program for causing a computer to implement the functions of the operation management system according to any one of claims 1 to 5.

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