JP5165192B2 - Driving recorder - Google Patents

Description

  The present invention relates to a driving recorder that records status data of a vehicle, particularly a business vehicle such as a taxi.

The driving recorder is mounted on a vehicle and records status data such as image data, acceleration data, speed data, and position data during traveling. Some driving recorders record all the situation data while the vehicle is running. In this case, a large-capacity recording medium is required, so it is necessary to select situation data for collision accidents and so-called “near-miss” etc. There is also a driving recorder configured to store only status data when a serious driving error occurs in a recording medium.

In a driving recorder that selects only highly important situation data and saves it on a recording medium, acceleration data is generally used as a detection trigger, and if the acceleration exceeds a certain level, the acceleration is used. The situation data before and after including the time point at which is detected is stored in the recording medium (see Patent Document 1).
Japanese Patent Laid-Open No. 5-197858

  However, when the situation data is selected using the acceleration data as a detection trigger, there is a problem that the situation data regarding a minor contact accident with a small acceleration is not recorded.

  Therefore, the present invention is intended to provide a driving recorder that can record situation data related to an accident without omission.

That is, the driving recorder according to the present invention stores a detection device that detects a vehicle state, a determination unit that determines the presence or absence of a selection signal that is generated when a driver operates the vehicle after an accident, and vehicle state data A situation data storage unit, and when the determination unit determines that the selection signal is generated, the situation data storage unit is configured to select and store the situation data of the vehicle before and after the selection signal. It is characterized by being. Here, the selection signal generated when the driver operates the vehicle after the occurrence of the accident means, for example, that the driver generates an accident such as opening / closing a door, pulling a side brake, turning off an ignition switch, etc. It is a signal generated by actions that can be taken after recognition.

Normally, regardless of the size of the accident, when a vehicle accident occurs, the driver tries to open the door and go outside to check the damage. Therefore, in the case of a driving recorder having such a configuration, the opening / closing of the vehicle door is used as a criterion for selecting the situation data by utilizing the driver's action. In this case, it is possible to detect a minor contact accident that is likely to cause a record omission with high accuracy and record the situation data.

  Also, in the event of a vehicle accident, the driver would normally pull the side brake before opening the door. Therefore, instead of opening / closing the door, or in conjunction with opening / closing the door, a slight contact accident can be detected with high accuracy as a criterion for selecting the situation data that the side brake has been applied. .

  Further, if it is determined that it takes time to handle the accident after confirming the damage situation of the vehicle accident, it is considered that the driver turns off the ignition switch. Therefore, even if it is used that the ignition switch is turned off as a criterion for selecting the situation data, it is possible to detect a slight contact accident with high accuracy.

  However, the driver may go out of the car by simply pulling the side brake, turning off the ignition switch, and opening the door for a simple break or occupant change. For this reason, when the necessity of recording is low, it is activated when the storage of the situation data of the vehicle in the situation data storage unit is canceled so that the saving of the situation data can be canceled by the judgment of the driver. It is preferable to provide a manual switch that generates a release signal.

In addition, in order to prevent situation data from being missed even if there is a minor contact accident, a manual switch that issues an instruction signal to store the situation data so that the situation data can be recorded at the discretion of the driver And a determination unit that determines whether the manual switch is turned on or off, and the situation data storage unit stores vehicle situation data when the determination unit determines that the manual switch is turned on. May be.

  As described above, according to the present invention, the action that is likely to be performed by the driver in the event of an accident is used as a determination criterion for selecting the situation data. Even minor contact accidents that are likely to cause record omissions can be detected with high accuracy, and situation data related to the accidents can be recorded without omissions.

  An embodiment of the present invention will be described below with reference to the drawings.

  As shown in FIGS. 1 and 2, the driving recorder 1 according to the present embodiment is adhered to the windshield W, and records the behavior of the vehicle V, the surrounding conditions, and the like during a certain period before and after an accident or near accident. In a single casing CA, the overall shape of which is generally oval, the basic components, that is, the detection devices 11, 12, 13, microcomputer 10, notification device 17, manual switch A14, the transmitter 16, the external recording device 15 and the like are integrated.

As shown in detail in FIG. 3, the components of the driving recorder 1 include detection devices that detect the situation of the vehicle, that is, an imaging device 11 that captures the situation around the vehicle, and a GPS that detects the position of the vehicle. The receiver 12, the acceleration sensor 13 for detecting acceleration applied to the vehicle, the data receiving unit 101 for receiving data detected by these detection devices, and the data sent from the data receiving unit 101 are temporarily stored. A selection signal generated when the door 3 is opened / closed, the side brake 4 is pulled, or the ignition switch 5 is turned off is added to the temporary data storage unit 102 and the status data stored in the temporary data storage unit 102. A determination unit 105 that determines whether or not it is included, and a determination to store parameter data relating to a selection signal that is a determination criterion in the determination unit 105 When the semi-parameter storage unit 106 and the determination unit 105 determine that the selection signal is included in the situation data, the notification device 17 that notifies the driver of the situation signal, and the driver who receives the notification from the notification device 17 Manual switch A14 that operates when it is determined that the storage of the situation data is unnecessary, and the operation when the driver determines that the situation data should be stored even though the notification from the notification device 17 has not been received. Manual switch B19, a data transfer unit 103 for transferring the situation data stored in the temporary data storage unit 102 according to an instruction from the determination unit 105, and a situation data storage unit for storing the situation data transferred from the data transfer unit 103 104, the transmitter 16 that transmits the situation data stored in the situation data storage unit 104 to the outside, and the situation data storage unit 104. An external recording device 15 for recording the situation data, and an auxiliary power supply 18.

Further, the data receiving unit 101 is configured to receive data from the vehicle speedometer 2, the door 3, the side brake 4, and the ignition switch 5 built in the vehicle. Received via. The connector CN is also used for power supply.

Each part will be described in detail. The imaging device 11 uses, for example, a CCD camera that can shoot a moving image. The GPS receiver 12 detects the position of the mounted vehicle based on a signal sent from an artificial satellite. The acceleration sensor 13 is configured by using, for example, a piezoresistive effect, and senses 1-3-dimensional acceleration (for example, front-rear, left-right, up-down in the case of three-dimensional) that acts on the vehicle.

  The data temporary storage unit 102 sequentially stores data detected by the detection devices incorporated in the driving recorder 1, data generated from the vehicle speedometer 2, the door 3, the side brake 4, and the ignition switch 5 in time series. And is overwritten one after another when the capacity is satisfied.

In the determination unit 105, the status data stored in the temporary data storage unit 102 includes a selection signal generated by opening / closing the door 3, the side brake 4 being pulled, or the ignition switch 5 being turned off. If the selection signal is included, the determination result is transmitted to the notification device 17.

  When the notification device 17 is notified that the selection signal is included in the situation data from the determination unit 105, the notification device 17 notifies the driver with light or sound, and is exposed to the surface of the casing CA. LED 171 that is a light emitting body, and an audio output body (not shown) such as a buzzer and a speaker built in the casing CA.

  The manual switch A14 is a button switch provided on the surface of the casing CA, and the driver who is notified that the selection signal is included in the situation data by light or sound emitted from the notification device 17 When the selection signal is generated due to a simple break or occupant change and it is determined that it is not necessary to save the situation data, the situation data storage unit for the situation data is turned on by turning on the manual switch A14. A release signal for instructing to cancel the storage in is transmitted to the determination unit 105.

  The determination parameter storage unit 106 determines whether or not there is a selection signal generated by opening / closing the door 3, the side brake 4 being pulled, or the ignition switch 5 being turned off in the situation data. This stores parameter data that is a criterion for determination.

  The data transfer unit 103 transfers the vehicle situation data stored in the data temporary storage unit 102 to the situation data storage unit 104 in accordance with an instruction from the determination unit 105. When the determination unit 105 determines that the selection signal is included in the situation data, the situation data of the vehicle stored in the temporary data storage unit 102 is stored in the situation data from the determination unit 105 to the data transfer unit 103. A signal instructing the transfer to the unit 104 is issued. However, when a release signal instructing to cancel the storage is transmitted from the manual switch A14 to the determination unit 105, a signal instructing to transfer the vehicle situation data to the situation data storage unit 104 is not issued.

  The situation data storage unit 104 stores vehicle situation data stored in the data temporary storage unit 102 received via the data transfer unit 103.

The external recording device 15 uses, for example, a CF card, a hard disk or the like that is detachably attached to a slot 15b that opens to the side of the casing CA, and stores the status data stored in the status data storage unit 104. It is recorded as necessary.

  The transmitter 16 uses a wireless LAN or the like. For example, when the vehicle equipped with the driving recorder 1 of the present embodiment is a business vehicle such as a taxi, the situation data stored in the situation data storage unit 104 is stored as office work. It is sent to the place.

  The auxiliary power supply 18 is normally supplied with electric power from a battery mounted on the vehicle. However, even if the battery is damaged due to a collision accident or the like, the auxiliary power source 18 supplies electric power to the driving recorder 1 to obtain vehicle status data. It is possible to record.

  When the selection signal is not detected from the situation data for some reason or immediately after the driver recognizes the occurrence of the accident, the manual switch B19 is turned on by the driver himself, toward the determination unit 105. A signal instructing to store the situation data in the situation data storage unit 104 is transmitted. The manual switch B19 is not shown in FIG.

The data receiving unit 101, the temporary data storage unit 102, the data transfer unit 103, the situation data storage unit 104, the determination unit 105, and the determination criterion parameter storage unit 106 are configured using the microcomputer 10. The microcomputer 10 includes a CPU, an internal memory, an AD converter, and the like. Then, by operating the CPU and its peripheral devices according to the program set in the predetermined area of the internal memory, the data receiving unit 101, the temporary data storage unit 102, the data transfer unit 103, the status data storage unit 104, the determination unit 105, and the determination The reference parameter storage unit 106 is configured to function. The microcomputer 10 may be a general-purpose computer or a dedicated computer.

The operation of the driving recorder 1 configured as described above will be described below.

  The vehicle situation data such as continuously captured image data is first stored in the data temporary storage unit 102. When new situation data is stored in the data temporary storage unit 102, as shown in FIG. The determination unit 105 determines whether or not the selection signal is included in the situation data (step S1). If it is determined that the selection signal is included in the situation data, the determination unit 105 operates the notification device 17. A signal is sent to notify the driver, and the notification device 17 notifies the driver that the selection signal has been detected by light or sound (step S2). The driver who has received the notification turns on the manual switch A14 when determining that the selection signal is generated due to a simple break or occupant change, while the selection signal is caused by a contact accident or the like. If this occurs, the manual switch A14 is not turned on. When the determination unit 105 determines whether or not the manual switch A14 is turned on (step S3) and determines that the manual switch A14 is not turned on (it remains off), for example, image data In the case of moving images and images taken continuously as still images such as 30 frames per second, image data of several tens of seconds before and after the selection signal is generated is transferred to the data storage unit 104, and the situation data storage unit It stores in 104 (step S4). The time length of the situation data stored in the situation data storage unit 104 can be arbitrarily set.

According to the present embodiment as described above, the action that is likely to be performed by the driver in the event of an accident is used as the determination criterion for selecting the situation data. Can detect minor contact accidents that are prone to record omissions with high accuracy and record the situation data. Further, when a selection signal is generated due to a simple break or occupant change, it can be canceled by turning on the manual switch A14, so that unnecessary data storage can be avoided.

The present invention is not limited to the above embodiment. For example, the situation data acquired by the driving recorder 1 may include brake information such as the time, length, and number of times the brake is depressed, and blinker operation information.

  The determination unit 105 is not limited to the presence / absence of the selection signal, but as a criterion for determining whether or not to record the situation data by appropriately combining acceleration, speed, stoppage of power supply from the main power source (battery), and the like. It may be used. Further, by using a combination of parameters resulting from a plurality of events, the situation data may be classified according to the importance and stored separately in the storage unit A, the storage unit B, or the like of the situation data storage unit 104.

  In addition, it goes without saying that the present invention can be variously modified without departing from the spirit of the present invention.

  According to the present invention, it is possible to provide a driving recorder that can select and record situation data related to an accident with high accuracy.

The typical front view showing the case where the driving recorder concerning one embodiment of the present invention is attached to the car. The perspective view at the time of seeing from the vehicle inside of the driving recorder in the embodiment. The functional block diagram of the driving recorder in the embodiment. The flowchart which shows operation | movement of the driving recorder in the same embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Driving recorder 3 ... Door 104 ... Situation data storage part 105 ... Determination part

Claims (2)

A detection device for detecting the status of the vehicle;
A data temporary storage for storing vehicle status data detected by the detection device;
A determination unit that determines the presence or absence of a selection signal generated by the driver operating the vehicle after the accident;
When the determination unit determines that the selection signal is generated, the vehicle status data before and after the selection signal is generated is selectively stored among the vehicle status data stored in the data temporary storage unit. A situation data storage unit ,
Driving characterized in that the selection signal is generated by opening / closing a door, is generated by pulling a side brake , or is generated by turning off an ignition switch. Recorder. The situation abort the storage in the data storage unit, the driving recorder of claim 1 wherein a manual switch for release signal is generated by operating situation data of the vehicle.

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