JP2010198214A - Drive recorder and video information display method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drive recorder and a video information display method, teaching driving skill while providing a user with concrete examples. <P>SOLUTION: The drive recorder (2) recording video information (600) captured by an imaging means (3) into a recording medium (6) includes: a position information acquisition means (9) acquiring present position information of a vehicle; and a control part (24) performing control to record the video information into the recording medium when position information recorded in advance in the recording medium coincides with the present position information obtained by the position information acquisition part or when the present position information becomes within a predetermined distance preset from the position information. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a drive recorder and a video information display method, and more particularly to a drive recorder and a video information display method for instructing a driving technique using the contents of recorded image information.

  2. Description of the Related Art A traffic safety education support system that performs traffic safety education using accident image data recorded by a drive recorder is known (see, for example, Patent Document 1). The traffic safety education support system includes a server computer that collects and manages accident image data captured by a drive recorder via a network, and is used for education on user traffic safety while using the server computer. .

  However, there is a problem that it is difficult to clearly show how dangerous driving can be avoided, even if only data that captures dangerous driving such as accident image data is shown to the user. It was. There is also a problem that even if only the situation where the accident occurred is displayed, it cannot be compared with the original safe driving.

JP 2007-11148 A

  Therefore, an object of the present invention is to provide a drive recorder and a video information display method that can solve the above-described problems.

  It is another object of the present invention to provide a drive recorder and a video information display method that enable a user to be instructed in driving skills by showing a specific example.

  In order to solve the above-described problem, a drive recorder that records image information captured by an imaging unit according to the present invention on a recording medium is recorded in advance on a recording medium and a position information acquiring unit that acquires current position information of the vehicle. Video information is recorded on the recording medium when the current position information matches the current position information acquired by the position information acquisition unit or when the current position information is within a predetermined distance from the position information. It has the control part which controls to.

  In order to solve the above problems, in the video information display method according to the present invention, video information relating to dangerous driving recorded in a recording medium in a drive recorder mounted on a vehicle is acquired together with point information where the dangerous driving is recorded. And acquiring video information related to safe driving recorded on the recording medium based on the point information recorded on the recording medium, and displaying video information related to dangerous driving and video information related to safe driving. .

  In the drive recorder and the video information display method according to the present invention, not only imaging data that images dangerous driving, but also imaging data that images safe driving can be presented to the user. It became possible to improve.

It is a figure which shows the example which mounted the drive recorder in the vehicle. It is a figure which shows the example which has arrange | positioned the drive recorder etc. in the vehicle. It is a figure which shows the example which installed the main body of the drive recorder in the vehicle. It is a figure which shows the example of an external appearance of a reproducing | regenerating apparatus. It is a block diagram which shows the electric constitution of a drive recorder. It is a block diagram which shows the electric constitution of a reproducing | regenerating apparatus. It is a flowchart of the operation example of a memory card. It is a figure which shows an example of the processing flow of a center terminal. It is a figure which shows the example of a reproduction | regeneration screen of video information.

  Hereinafter, a drive recorder and a video information display method according to the present invention will be described with reference to the drawings. However, it should be noted that the technical scope of the present invention is not limited to these embodiments, but extends to the invention described in the claims and equivalents thereof.

  First, information recording in the drive recorder will be described.

  FIG. 1 is a diagram showing an example in which a drive recorder 2 is mounted on a vehicle 1.

  A drive recorder 2 is installed in the vehicle 1 and is connected to a video camera 3 that captures the front of the vehicle 1. Video information from the video camera 3 is cyclically recorded in a semiconductor storage unit in the drive recorder 2. When a predetermined recording condition is satisfied, the video information recorded in the semiconductor storage unit is recorded in the memory card 6. The predetermined recording condition means a case where an impact is applied to the vehicle 1 due to the occurrence of an accident or the like, and details will be described later.

  In addition to the video information, the drive recorder 2 acquires operation information including vehicle speed information, and temporarily records it in a semiconductor storage unit in the drive recorder 2. The operation information is recorded in the memory card 6 together with the video information when the above-described recording conditions are satisfied, and the operation information recorded in the semiconductor storage unit at a predetermined time is collected separately from this. Recorded in the memory card 6. Details of the operation information will be described later.

  FIG. 2 is a diagram illustrating an example in which the drive recorder 2 is installed in the vehicle 1.

  The drive recorder 2 is electrically connected to the video camera 3, the microphone 7, and the shooting switch 8. The video camera 3 is attached to the front glass surface on the back side of the vehicle interior mirror, captures the front of the vehicle, and transmits video information to the drive recorder 2. The microphone 7 is installed in the vicinity of the feet on the passenger seat side and collects sound in the vehicle 1. The shooting switch 8 is installed in the vicinity of the handle, and can be recorded on the drive recorder 2 by the user operating the video switch 3.

  FIG. 3 is a diagram showing an example in which the main body of the drive recorder 2 is installed in the vehicle 1.

  The main body of the drive recorder 2 can be installed in the lower space of the passenger seat side seat 300. In order to record and control video information and the like when an impact or the like is applied to the vehicle 1, the main body is fixedly installed.

  FIG. 4 is a diagram illustrating an appearance example of the center terminal device.

  Video information, operation information, and the like recorded on the memory card 6 are reproduced by the center terminal 400 constituted by a personal computer or the like. The memory card 6 is inserted into an I / F connected to a personal computer, and video information, operation information, and the like are read. As will be described later, driving guidance is given to the user at the center terminal 400 by comparing and displaying dangerous driving and safe driving.

  FIG. 5 is a block diagram showing an electrical configuration of the drive recorder 2.

  The drive recorder 2 can be configured separately from the video camera 3 as a device dedicated to video recording. However, the drive recorder 2 may be housed in the same housing as the video camera 3 and the microphone 7 and may be configured integrally. Moreover, it can also be comprised as one function of a vehicle-mounted navigation apparatus.

  The video camera 3 is controlled so as to photograph the front of the vehicle 1 and output an analog video signal as the video information 600. For example, a CCD image sensor (Charge Coupled Device Image Sensor) or a CMOS image sensor (Complementary) is used as a two-dimensional image sensor. Metal Oxide Semiconductor Image Sensor).

  The acceleration sensor 5 is configured by a so-called G sensor (Gravity Accelerative Sensor) that detects the magnitude of an impact applied to the vehicle 1 as a gravitational acceleration. It is made of a semiconductor that generates an electric current based on the gravitational acceleration when it receives an impact, detects the magnitude of the gravitational acceleration in the longitudinal direction and the lateral direction of the vehicle, and outputs gravitational acceleration information 602 to the CPU 24.

  The memory card 6 is a recording medium that can be removed from the drive recorder 2 and includes a programmable nonvolatile semiconductor memory card such as a CF card (Compact Flash Card), an SD card (Secure Digital Memory Card), and a memory stick. The Video information and operation information are recorded in the memory card 6.

  In this embodiment, a memory card is used as a removable storage medium. However, the present invention is not limited to this, and other removable memory cards, hard disks, and the like can also be used. Further, instead of the memory card 6, the drive recorder 2 can be used with a built-in hard disk. In this case, the drive recorder 2 is provided with a transmission circuit, and the video information and operation information recorded on the hard disk by wireless communication are used. What is necessary is just to comprise so that it may transmit to the center terminal 400. Moreover, you may comprise so that the navigation apparatus mounted in the same vehicle as a reproducing | regenerating apparatus can be utilized.

  The microphone 7 is electrically connected to the CPU 24, and is configured to collect sound inside or outside the vehicle 1 and transmit it to the CPU 24 as sound information 603. The audio information 603 is converted into a digital signal by an analog / digital converter in the CPU 24. Note that a unidirectional microphone with high sensitivity on the front side of the microphone may be used so as not to unnecessarily collect noise on the road.

  The imaging switch (imaging SW) 8 transmits a signal to the electrically connected CPU 24 when operated by the user. Thereby, the CPU 24 controls the video card information and the operation information stored in the second RAM 15 to be recorded in the memory card 6. That is, the operation of the photographing SW 8 acts as the establishment of the recording condition. Note that only the video information at the moment when the photographing SW 8 is operated may be recorded in the memory card 6.

  A GPS (Global Positioning System) receiver 9 receives radio signals including satellite orbits from a plurality of GPS satellites and time data from atomic clocks mounted on the satellites, and the time difference between the received radio waves By calculating the relative distance difference with each satellite, current location information is obtained. The position on the earth can be determined by capturing radio waves from three satellites. When the GPS receiver 9 detects the current position information, the GPS receiver 9 transmits GPS information 604 including the current position information and current time information to the CPU 24.

  The vehicle speed sensor 10 outputs the rotation of a rotor provided on the wheel shaft of the vehicle 1 as a rotation pulse signal 605, and is configured by a magnetic sensor or an optical sensor. Note that the CPU 24 calculates speed information of the vehicle 1 by calculating the number of wheel rotations per unit time from the pulse signal received from the vehicle speed sensor 10.

  The interface (I / F) 11 constitutes a so-called slot portion of a memory card 6 provided in the drive recorder 2. The I / F 11 transfers recording information 606 including video information and operation information transmitted from the drive recorder 2 to the inserted memory card 6, and the I / F 11 is recorded in the memory card 6 in advance. It has a function to read information such as setting points.

  The image processing circuit 13 converts the video information 600 input from the video camera 3 into a digital signal, and creates and outputs image data 609. For example, it is composed of JPEG-IC (Joint Photographic coding Experts Group-Integrated Circuit) and creates data in JPEG format. In this case, since JPEG-IC does not have a function of designating an address and outputting data, 30 files are written to a first RAM (Random Access Memory) 14 per second, and overwriting is performed for each file.

  The first RAM 14 temporarily records the image data 609 converted by the image processing circuit 13. The first RAM 14 is connected to a DMA (Direct Memory Access) circuit in the CPU 24. For example, one out of three images, that is, 10 files per second are transferred to the second RAM 15 by the DMA function. And recorded cyclically.

  The second RAM 15 cyclically records the video information converted into the image data by the image processing circuit 13 and the operation information.

  For example, SDRAM (Synchronous Dynamic Random Access Memory) is used for the first RAM 14 and the second RAM 15. Since SDRAM is designed to operate in synchronization with the CPU clock, it has a short I / O waiting time, and can be accessed faster than conventional DRAM (Dynamic Random Access Memory). This is because it is suitable for the control for processing the video data at a high speed.

  The nonvolatile ROM 16 stores a control program 17 and the like for comprehensively controlling the hardware resources constituting the drive recorder 2. A mask ROM may be used as the nonvolatile ROM 16, but a program can be written and erased by using a flash memory which is a programmable nonvolatile semiconductor memory, an EEPROM (Erasable Programmable Read Only Memory), a ferroelectric memory, or the like. It becomes possible.

  The control program 17 is stored in the non-volatile ROM 16 and is read by the CPU 24 when the drive recorder 2 is activated, and functions as a program for controlling each part and for data calculation processing.

  The indicator lamp 18 is made up of a light emitting diode or the like, and is lit while the drive recorder 2 is activated when power is supplied from the CPU 24 to notify the user that it is being activated. Further, when an abnormality occurs in the drive recorder 2, the CPU 24 notifies the user of the occurrence of the abnormality by blinking the indicator lamp 18.

  The accessory switch (ACC switch) 19 is electrically integrated with an engine start key cylinder provided in the vehicle 1. When the switch is turned on by the user's key operation, an accessory on signal 610 is transmitted to the drive recorder 2. The drive recorder 2 receives the accessory on signal 610 of the ACC switch 19 and starts control. Note that an ignition key output signal can be used instead of the output signal of the ACC switch 19.

  The power switch (power SW) 20 transmits a power-on signal to the drive recorder 2 when the user performs a switch operation. This can be used when it is desired to operate the drive recorder 2 without turning on the ACC switch 19.

  The battery 21 is provided in the vehicle 1 and supplies power to the main body of the drive recorder 2. The battery supplies power to the power control circuit 22 and the backup battery 23. The battery 21 may be any battery that can be installed in a vehicle and can generate an electromotive force of 12V.

  The power supply control circuit 22 is connected to the CPU 24 and receives an ON signal from the ACC switch 19, thereby supplying power from the battery 21 to each part of the CPU 24 and the drive recorder 2. When it is detected that the power SW 20 has been operated, the power supply is started regardless of the state of the ACC switch 19. Furthermore, the power supply control circuit 22 transmits an end signal to the CPU 24 by detecting that the ACC switch 19 or the power supply SW 20 is turned off. The CPU 24 that has received the end signal transmits an off signal to the power supply control circuit 22 as a control end process. As a result, the power supply control circuit 22 stops supplying power.

  The backup battery (B / U battery) 23 is composed of a capacitor or the like, and is connected to supply power from the battery 21 to the CPU 24 and each part of the drive recorder 2. If an impact is applied to the vehicle due to a collision accident or the like, the battery 21 may be damaged, or the battery 21, the power control circuit 22, and the connection line may be disconnected. In this case, the B / U battery 23 backs up the power of the drive recorder 2 by supplying the stored power to the CPU 24 and the like.

  A CPU (Central Processing Unit) 24 operates as a control device of the drive recorder 2 and is configured by a microcomputer or the like. Based on the control program 17, the CPU 24 executes control of each part of the drive recorder 2 and data calculation processing.

  FIG. 6 is a block diagram showing an electrical configuration of the center terminal 400.

  The interface (I / F) 411 constitutes an insertion port of the memory card 6 provided in the center terminal 400, that is, a so-called slot portion. The I / F 411 transfers video information, operation information, and the like recorded on the memory card 6 to the center terminal 400 side, and the I / F 411 has a function of writing information such as a set point on the memory card 6.

  The RAM 414 is used to temporarily record data when the CPU 424 performs image processing of video information transferred from the memory card 6 and information processing of operation information. For example, an SDRAM is used as the RAM 414.

  The nonvolatile ROM 416 stores a control program 417 and the like for comprehensively controlling the hardware resources constituting the center terminal 400. As the nonvolatile ROM 416, for example, an EEPROM, a ferroelectric memory, or the like is used.

  The control program 417 is recorded in the non-volatile ROM 416, read out to the CPU 424 when the center terminal 400 is activated, and functions as a program for control of each unit and data calculation processing.

  The CPU 424 operates as a control device for the center terminal 400 and is configured by a microcomputer or the like. The CPU 424 executes control of each part of the center terminal 400, data calculation processing, and the like based on the control program 417.

  The operation unit 430 includes a keyboard, a mouse, and the like, and is used as a means for performing an operation input to the CPU 424 when the operator operates the center terminal 400.

  The display unit 440 includes a liquid crystal display device and the like, and is used to appropriately display video information, operation information, and the like recorded on the memory card 6.

  The map information recording unit 450 is composed of a recording medium such as a hard disk or a DVD, and records map information including road information and speed limit information.

  The card information recording unit 460 is configured by a recording medium such as a hard disk and is used for recording video information, operation information, and the like recorded on the memory card 6.

  Next, a recording procedure for video information and operation information in the drive recorder 2 will be described.

  The CPU 24 acquires still image data captured by the video camera 3 at a rate of 10 frames per second, and records it cyclically in the second RAM 15 via the first RAM 14. In addition, every time the CPU 24 acquires still image data from the video camera 3, the CPU 24 acquires operation information and records it cyclically in the second RAM 15. Further, the CPU 24 periodically records operation information in the second RAM 15 separately from the acquisition timing of the still image data. The time interval and the number of still image data acquired by the CPU 24 described above are examples, and the present invention is not limited to this.

  Next, when the CPU 24 detects that a recording condition to be described later is satisfied, video information for a total of 20 seconds, 12 seconds before the recording condition is satisfied and 8 seconds after the recording condition is satisfied (200 still image data for each time the recording condition is satisfied). ) And operation information corresponding to the video information is transferred from the second RAM 15 to the memory card 6 and recorded. Since the video information, operation information, and the like recorded on the memory card 6 can be displayed on the center terminal 400, the user of the drive recorder 2 can verify the running state and accident situation of the vehicle 1. . Note that the above-described period (12 seconds before the recording condition is satisfied and 8 seconds after the recording condition is satisfied) that the CPU 24 records on the memory card 6 when the recording condition is satisfied is an example, and the present invention is not limited to this.

  In addition, the CPU 24 transfers operation information stored every second in the operation information stored in the second RAM 15 from the second RAM 15 to the memory card 6 and records it every 10 seconds independently of the establishment of the recording condition. To do. That is, the operation information every 1 second is recorded in the memory card 6 every 10 seconds irrespective of the establishment of the recording condition described later. In addition, the interval of the operation information recorded by the CPU 24 and the recording timing to the memory card 6 are examples, and are not limited thereto. The reason why the operation information is recorded in the memory card 6 every 10 seconds is that if the recording is performed every second, the memory card is frequently accessed and an overhead may occur.

  The case where the recording condition is satisfied means the following four cases.

1. “G detection”: When the acceleration sensor 5 detects gravitational acceleration equal to or greater than a predetermined threshold. Specifically, when the gravitational acceleration in the front-rear direction of the vehicle 1 is Gy and the gravitational acceleration in the left-right direction of the vehicle 1 is Gx, the CPU 24 outputs the absolute value (Gx ² + Gy ²⁾ of the combined gravitational acceleration output from the acceleration sensor 5. ) 0 ^{- 5} was detected every 10 ms, the value of the threshold value or more acceleration, when it is detected continuously threshold duration or more, it is determined that the recording condition is established. Although the threshold acceleration can be set to 0.40 G and the threshold duration can be set to 100 milliseconds, these values are merely examples and are not limited to these. The reason why the recording condition is satisfied is that when the acceleration sensor 5 detects such a value, it can be recognized that a dangerous driving is performed or a collision accident of the vehicle 1 has occurred. It is.

    2. “Speed trigger”: When the speed difference within a predetermined period of the vehicle 1 detected from the vehicle speed sensor 10 is equal to or greater than a threshold value. Specifically, when traveling at 60 km / h or more and the deceleration for one second becomes 14 km / h or more, it is determined that the recording condition is satisfied. The case where the recording condition is satisfied is that the vehicle 1 recognizes that a dangerous driving was performed, an accident occurred, or an accident urgency occurred when such a speed change occurred. Because it can.

    3. Shooting SW: When shooting SW8 is operated.

    4). “Setting point”: When the vehicle 1 matches the preset setting point information. The set point information includes GPS data indicating a predetermined point and vector information on the traveling direction of the vehicle indicating a predetermined traveling direction. The setting point information is recorded in advance on the memory card 6 in the center terminal 400 (see S11 in FIG. 7). When the memory card 6 is inserted into the I / F 11 of the drive recorder 2, the CPU 24 stores the memory card 6 in advance. Is read out and temporarily recorded in the internal memory or the like. Further, the CPU 24 determines that the recording condition is satisfied when the vehicle 1 matches the set point information with the acquisition of operation information (GPS data and vector information on the traveling direction) described later.

  The case where the vehicle 1 matches the set point information means that the GPS data (current position information) of the vehicle 1 matches the GPS data indicating a predetermined point included in the set point information and the vehicle 1 travels. This refers to a case where the direction vector information (current traveling direction information) matches the vehicle traveling direction vector information indicating a predetermined traveling direction included in the set point information. Further, when the GPS data (current position information) of the vehicle 1 matches the GPS data indicating a predetermined point included in the set point information, the GPS data (current position information) is included in the set point information in advance. The GPS data (current position information) of the vehicle 1 is within a predetermined distance (for example, within 100 m) from a predetermined point, not only when the GPS data indicating the predetermined point is completely matched. May be included. Further, when the vector information of the traveling direction of the vehicle 1 (current traveling direction information) matches the vector information of the traveling direction of the vehicle indicating the predetermined traveling direction included in the set point information, the traveling direction of the vehicle 1 Vector information (current traveling direction information) of the vehicle 1 not only completely matches the vector information of the traveling direction of the vehicle indicating the predetermined traveling direction included in the set point information, A case where the current traveling direction information) is within a predetermined angle difference (for example, 10 degrees) from a predetermined traveling direction may be included.

  Furthermore, if the GPS data (current position information) of the vehicle 1 matches GPS data indicating a predetermined point included in the set point information, it may be determined that the vehicle 1 matches the set point information. That is, the vector information in the traveling direction may not be considered.

  By the way, when the video information and the operation information are recorded in the memory card 6 when they coincide with the set point information, when the recording conditions by “G detection” and “speed trigger” are satisfied at the same time, The information recorded when the recording condition of “is satisfied is deleted. The video information and operation information recorded when the recording condition by the “setting point” is established are for use as a sample of safe driving, but at the same time, the recording condition by “G detection” and “speed trigger” This is because when the above is established, it can no longer be used as a sample for safe driving.

  When any one of the above recording conditions is satisfied, the CPU 24 transfers the video information and operation information for a total of 20 seconds, 12 seconds before the recording conditions are satisfied and 8 seconds after the recording conditions are satisfied, to the memory card 6 for recording. If the recording condition is satisfied, data indicating the type of the satisfied recording condition is recorded on the memory card 6 together. When the recording condition is satisfied, the audio information acquired from the microphone 7 is recorded on the memory card 6 together with the video information for a total of 20 seconds, 12 seconds before the recording condition is satisfied and 8 seconds after the recording condition is satisfied. You may comprise. Further, the recording conditions are not limited to the four described above, and other conditions can be defined.

  The operation information is the following information.

1. Gravity acceleration information (Gy, Gx) detected from the acceleration sensor 5.
2. Current position information (latitude and longitude information) and current time information of the vehicle 1 detected from the GPS receiver 9.
3. Speed information detected from the vehicle speed sensor 10.
4). ON / OFF information of the ACC switch 19.
5). Vector information of the traveling direction of the vehicle (data indicating the direction of the traveling direction). It is assumed that the CPU 24 obtains the vector information of the traveling direction of the vehicle from the transition of the current position information of the vehicle 1 detected from the GPS receiver 9 by calculation.

  Note that the content of the operation information is not necessarily limited to the above information, and may include information related to the operation and traveling of the vehicle 1 such as the lighting state of lights such as a blinker and the steering angle of the steering wheel. good.

  The predetermined recording area of the memory card 6 includes a unique ID of the memory card 6, an ID (or name data) of a user (for example, taxi crew) using the memory card 6, and set point information (multiple May be recorded separately from the image information and the operation information.

  FIG. 7 is a diagram showing a flow of an operation example of the memory card 6.

  First, the user inserts the memory card 6 into the I / F 411 of the center terminal 400 and initializes the card (S10). In the initialization of the card, the data previously recorded on the memory card 6 is deleted by the CPU 424, and the unique ID of the memory card 6 and the ID of the user (for example, taxi crew) using the memory card 6 or Name data is written to a predetermined address of the memory card 6.

  Next, the CPU 424 writes set point information (which may be plural) determined by a procedure described later (see S21 in FIG. 8) to a predetermined address of the memory card 6 (S11).

  Next, the user drives the memory card 6 in which the set point information is written at the start of operation (for example, when the taxi crew starts day shift work (7:45 to 17:15)). Is inserted into the I / F 11 of the drive recorder 2 and information recording is started (S12). Accordingly, when any of the four recording conditions described above is satisfied, the video information and the operation information are recorded in the memory card 6 in units of folders, and the operation information acquired every 1 s is stored in the memory card 6 every 10 s. (The operation information is recorded on the memory card 6 as one folder as a whole).

  Next, the user pulls out the memory card 6 inserted into the I / F 11 of the drive recorder 2 of the vehicle 1 at the end of the operation (for example, when the taxi manager finishes the day shift work), and the center terminal 400 Inserted into the I / F 411, the recorded video information and operation information are transferred to the card information storage unit 460 of the playback device and recorded (S13), and the series of processing is terminated. In addition, the transfer of the data recorded on the memory card 6 to the center terminal 400 is in principle performed for one operation unit of one vehicle. However, one memory card 6 may be used for a plurality of vehicles or used for a plurality of operations.

  On the center terminal 400 side, the CPU 424 reads the video information and operation information for each folder when the recording conditions recorded in the memory card 6 are satisfied, and the operation information collected in one folder as a whole. The memory card ID, user ID, and read date / time data are added and recorded in the card information storage unit 460.

  FIG. 8 is a diagram illustrating an example of a processing flow of the center terminal.

  First, the CPU 424 extracts, from all folders recorded in the card information storage unit 460, all folders in which the recording condition is satisfied (“G detection” and “speed trigger”) as corresponding to dangerous driving. (S20). Note that it is preferable that a predetermined flag is set in the folder for which the setting point information has been created in S21 to be described later so as not to be extracted again.

  Next, using the operation information in each extracted folder, the CPU 424 uses the GPS position data and the traveling direction vector information at the time when the recording condition is satisfied, and sets the set point information corresponding to each extracted folder. Create (S21). The created set point information is recorded in predetermined recording means (RAM 414, card information storage unit 460, etc.). Further, the recorded set point information is sequentially recorded in the memory card 6 that is initialized in the center terminal 400 in S11 of FIG.

  Next, the CPU 424 extracts all the folders for which the recording condition is satisfied (“setting point”) as corresponding to the created setting point information group (list) (S22). Note that it is preferable to once set a predetermined flag in the linked folder in S24 to be described later so that it is not extracted again.

  The CPU 424 determines whether or not there is a folder extracted in S22 (S23). If there is a target folder, the created setting point information is linked to the corresponding folder (S24). Then, a series of processing is completed. By the process of S24, it becomes possible to easily determine in which of the created set point information group (list) the corresponding folder exists. In addition, you may set so that a some folder may be linked corresponding to one setting point information.

  The processing flow shown in FIG. 8 is executed by the CPU 424 in cooperation with each component of the center terminal 400 in accordance with a control program recorded in advance in the nonvolatile ROM 416. Further, the process shown in FIG. 8 is repeatedly executed at a predetermined timing or in accordance with an instruction from the operator.

  7 and 8 described above are repeatedly executed for data recorded on a memory card in a plurality of vehicles managed by the sales office at a sales office or the like having the center terminal 400. As a result, video information as a sample of dangerous driving recorded by the establishment of the recording condition by “G detection” or “speed trigger”, and a sample of safe driving recorded by the establishment of the recording condition by “setting point” The set of video information and the like is gradually accumulated. Therefore, an operator who uses the center terminal 400 has an environment in which driving technology guidance for safe driving can be performed using the dangerous driving sample and the safe driving sample.

  FIG. 9 is a diagram showing an example of a video information playback screen.

  FIG. 9 is a diagram showing an example of the screen 140 displayed on the display unit 440 of the center terminal 400. All the screen display processing described later and processing based on the operator's operation on the screen are executed by the CPU 424. .

  The screen 140 shown in FIG. 9 is a reproduction of image information when the operator has a sample of dangerous driving (predetermined folder) and a sample of safe driving (predetermined folder) for the set point information recorded in advance. It is an example of a screen.

  On the left side of the screen 140, a folder as a sample of dangerous driving recorded by the establishment of the recording condition by “G detection” or “speed trigger”, the vehicle ID 141 recorded together with the folder, and the recording condition are satisfied. The area 145 for reproducing the video information as a sample of dangerous driving included in the folder is arranged. Further, on the right side of the screen 140, a folder as a sample of safe driving recorded by the establishment of the recording condition by the “setting point” corresponding to the setting point information 144 and the vehicle ID 151 recorded together with the folder, A date and time 152 when the recording condition is established, a type 153 of establishment of the recording condition, and an area 155 for reproducing video information as a safe driving sample included in the folder are arranged. Further, on the lower side of the screen 140, an operation button 160 for controlling reproduction of video information as a dangerous driving sample and video information as a safe driving sample is displayed.

  According to the operation of the operation button 160 by the operator, video information (200 still images for 12 seconds before the recording condition is established and 8 seconds after the recording condition is established) as a sample of dangerous driving and video information (recording) as a sample of safe driving 200 still images for 12 seconds before the condition is satisfied and 8 seconds after the condition is satisfied are sequentially displayed in the regions 145 and 155 in parallel. Note that playback, slow playback, rewind, fast forward, and the like using the operation button 160 are all set to synchronize the image information of both.

  Since the video information as a sample of dangerous driving and the video information as a sample of safe driving are video information corresponding to the same traveling direction at the same point (one is dangerous driving and the other is safe driving), It becomes the most suitable teaching material for driving technical guidance. In particular, for drivers who tend to commit dangerous driving, what kind of safe driving can be presented while comparing specific samples, the effect is very great.

  In the example of FIG. 9, only video information is mainly displayed, but acceleration or speed information included in the operation information recorded corresponding to the still image is used to accelerate or decelerate. Or how fast the vehicle is traveling may be displayed on the display screen 140 together with the video information.

  In the example of FIG. 9, the first still image recorded as a sample of dangerous driving and the first still image recorded as a sample of safe driving are synchronized so that the 200th still image sequentially. Until it is displayed in the areas 145 and 155 every 0.1 seconds. However, it may be set so that still images are displayed simultaneously in the regions 145 and 155 in synchronization with the coordinates of the GPS data of the operation information corresponding to each still image.

  In the example of FIG. 9, video information as a dangerous driving sample and video information as a safe driving sample are displayed on one display unit 440 of the center terminal 400 at the same time. However, two displays may be connected to one PC so that video information as a dangerous driving sample and video information as a safe driving sample are displayed on separate displays. In the case where the display is performed separately by the two displays, there is an advantage that the display area for displaying the respective video information becomes large and is easy to see. In addition, the center terminal 400 is configured by a plurality of PCs, and synchronization between the plurality of PCs is performed, and video information as a sample of dangerous driving and a video as a sample of safe driving are displayed on a display connected to each of the plurality of PCs. You may comprise so that information may be displayed separately.

  In the example of FIG. 9, video information as a dangerous driving sample and video information as a safe driving sample are displayed on one display unit 440 of the center terminal 400 at the same time. However, the video information as a dangerous driving sample and the video information as a safe driving sample may be displayed separately. Moreover, you may comprise so that an operator can select the mode which displays both on the same screen, and the mode which displays separately.

  In the example of FIG. 9, video information as a dangerous driving sample and video information as a safe driving sample are displayed on one display unit 440 of the center terminal 400 at the same time. However, when video information as a plurality of safe driving samples exists for video information as one dangerous driving sample, three or more areas are provided in the display screen 140 to provide a plurality of video information. These may be synchronized and displayed in each region simultaneously in parallel. Conversely, video information as a plurality of dangerous driving samples may be displayed simultaneously with respect to video information as one safe driving sample. Furthermore, video information as a plurality of dangerous driving samples may be displayed simultaneously with respect to video information as a plurality of safe driving samples.

  In the example of FIGS. 7 to 9, in principle, the set point information is recorded on a memory card inserted in the drive recorder of all vehicles. However, the reason for setting the “set point” as the condition for establishing the recording condition is to obtain a sample of safe driving for dangerous driving. The set point information may be recorded only on a memory card inserted into a vehicle operated by a hand or a specific driver group. Further, in the center terminal 400, a driver with less information on dangerous driving (“G detection” and “speed trigger”) is automatically selected as a driver who easily performs safe driving, and a memory used by such a driver. The setting point information may be automatically recorded only on the card.

  In the examples of FIGS. 7 to 9, in principle, the lengths of the video information and the operation information that are recorded when all types of recording conditions are satisfied are the same. In consideration of the position error and the like, it is preferable to record the video information and the operation information longer than usual (for example, a total of 30 seconds of 17 seconds before the recording condition is satisfied and 13 seconds after the recording condition is satisfied).

  In the example of FIGS. 7 to 9, in principle, all the plurality of set point information created in S <b> 21 of FIG. 8 are set to be recorded in the memory card 6 in S <b> 11 of FIG. 7. However, if the number of registered setting point information is too large, the amount of information originally recorded in the memory card 6 may be limited. It is preferable to set an upper limit (for example, 100) of the number.

  In the example of FIGS. 7 to 9, there is a possibility that a recording condition by multiple “set points” may be satisfied in correspondence with the same set point information during one operation (that is, points determined by the set point information) May drive multiple times in the same direction). However, if similar information is recorded a plurality of times, information that is originally recorded on the memory card 6 is limited. Therefore, the CPU 24 sets a predetermined flag for the set point information that has already been recorded during one operation. Even if the recording condition is satisfied again, control is performed so that the video information and the operation information are not recorded in the memory card 6.

  In the examples of FIGS. 7 to 9, the setting point information is set to include only the GPS position data and the traveling direction vector information. However, the setting point information may be set to include only GPS position data. In addition to the GPS position data and the traveling direction vector information, the set point information further includes current date / time information, month / day information, time zone information, day information, and / or weather information from the GPS receiver 9. You may set so that In that case, since the recording condition by the “set point” is satisfied not only when traveling at the same point in the same direction but also when other conditions (for example, date and time information) match, a closer situation ( It is possible to obtain a sample of safe driving in the same traffic situation and the same surrounding situation (dusk, night, rain, snow, etc.). Note that when the date and time information matches, it is preferable to include not only a case where the date and time information completely match but also a case where the date and time information is within a predetermined time difference (for example, 30 minutes) determined in advance. .

  In the examples of FIGS. 7 to 9, even if the recording condition based on the “set point” is satisfied, the recording condition based on the “set point” is satisfied if it corresponds to a dangerous driving such as “G detection” or “speed trigger”. It was set to delete (or not record) the information recorded in the event. However, even if the recording condition is not satisfied by “G detection” or “speed trigger”, the CPU 24 uses the acceleration value, speed data, etc. included in the operation information to set other criteria corresponding to the dangerous driving. If the standard is not satisfied, the information recorded when the recording condition by the “set point” is satisfied may be set to be deleted (or not recorded).

  The vehicle type information may be recorded in the memory card 6 so that the “setting point” recording condition is satisfied only in the case of the same vehicle type.

  The memory card 6 preferably has a recording capacity capable of recording a folder including video information and operation information recorded when at least 15 recording conditions are satisfied. When 16 or more recording conditions are satisfied by one operation of the vehicle 1, in principle, the first recorded folder is overwritten sequentially, and at least the folder by the satisfaction of the latest recording condition remains. It is preferable to do so. In addition, a specific flag may be set in the folder recorded when the recording condition is established by the “setting point” so that the folder is not overwritten.

  Since the capacity of the card information storage unit 460 of the center terminal 400 is limited, the center terminal 400 preferably has an automatic deletion function for automatically deleting from a data folder with a later capture date and time. In this case, it is preferable that the folder linked with the video information as the dangerous driving sample as the video information as the safe driving sample is set so as not to be deleted by the automatic deletion function. Furthermore, it is preferable that a folder linked with video information as a safe driving sample is set so as not to be deleted by the automatic deletion function as video information as a dangerous driving sample.

1 vehicle 2 drive recorder 3 video camera 5 acceleration sensor,
6 Memory card 7 Microphone 8 Shooting switch 9 GPS receiver,
10 Vehicle speed sensor 11 Interface 12 Video switch,
13 Image Processing Circuit 14 First RAM
15 Second RAM
16 Non-volatile ROM,
17 Control program 18 Indicator light 19 Accessory switch 20 Power switch,
21 battery 22 power supply control circuit 23 backup battery 24 CPU,
300 sheet 400 playback device 424 CPU
430 Operation unit 440 Display unit 450 Map information storage unit 460 Card information storage unit

Claims (4)

In a drive recorder for recording video information imaged by an imaging means on a recording medium,
Position information acquisition means for acquiring current position information of the vehicle;
When the position information recorded in advance on the recording medium matches the current position information acquired by the position information acquisition unit, or when the current position information falls within a predetermined distance from the position information, A control unit that controls to record the video information on a recording medium;
The drive recorder characterized by having. It further has a traveling direction acquisition means for acquiring current traveling direction information of the vehicle,
The control unit further sets in advance when the traveling direction information recorded in advance on the recording medium matches the current traveling direction information acquired by the traveling direction acquisition unit, or the current traveling direction information is preset from the traveling direction information. 2. The drive recorder according to claim 1, wherein the video information is controlled to be recorded on a recording medium when the angle difference is within a predetermined angle difference. Acquire video information about dangerous driving recorded on a recording medium in a drive recorder mounted on the vehicle together with point information where the dangerous driving is recorded,
Obtaining video information relating to safe driving recorded on the recording medium based on the spot information recorded on the recording medium;
Displaying video information about the dangerous driving and video information about the safe driving;
A video information display method comprising steps.   The video information display method according to claim 3, wherein in the display step, video information related to the dangerous driving and video information related to the safe driving are displayed on the same screen in synchronization.

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