JP2012203509A - Recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recording device capable of recording operation information in a dangerous scene for which determination cannot be made just by a G value.SOLUTION: A CPU 8 determines whether or not it is a scene of a right turn for which a speed reduction amount after the lapse of a fixed time after a right blinker is operated is a first prescribed value or larger (that is, whether or not it matches a confirmation condition of a safety action). When it is determined that it is the scene of a right turn, the CPU 8 then determines whether or not a speed of a vehicle has been accelerated without becoming 0 (that is, whether or not it matches an estimation condition of an unsafe action), and when it is determined that the speed of the vehicle has been accelerated without becoming 0, estimates that it is the unsafe action, and records that effect and operation information at the time inside a recording medium 9.

Description

  The present invention relates to a recording apparatus, and more particularly to a recording apparatus that is mounted on a vehicle and records vehicle operation information.

  Conventionally, for example, an operation management system described in Patent Document 1 has been proposed as the above-described recording apparatus. As shown in FIG. 7, every time the G value (= acceleration) detected by the G sensor becomes greater than or equal to the first threshold value and less than the second threshold value, the operation management system operates such as the vehicle speed and the number of revolutions at that time. Information is recorded in a recording medium. The operation information recorded at this time is overwritten in order from the oldest when the capacity increases.

  Moreover, the said operation management system records operation information, such as the vehicle speed at that time and rotation speed, in a recording medium, whenever the G value detected by G sensor becomes more than a 2nd threshold value. The operation information recorded at this time is recorded so as not to be overwritten.

  As a result, it was possible to record operation information when the G value would be a dangerous scene. However, in the operation management system described above, operation information is not recorded unless the G value is greater than or equal to the first threshold value. For example, when the vehicle does not stop temporarily when making a right turn at an intersection, There was a problem that operation information could not be recorded.

Japanese Patent No. 3229297

  Then, this invention makes it a subject to provide the recording device which can record the operation information in the dangerous scene which cannot be determined only by G value.

  The invention according to claim 1 for solving the above-described problem is that an acquisition unit that acquires vehicle operation information and a combination of one type of operation information acquired by the acquisition unit or two or more types of operation information are obtained in advance. The first determination means for determining whether or not the confirmation condition of the defined safety action is matched, and one type of operation information acquired by the acquisition means after that when determined by the first determination means Alternatively, if it is determined by the second determination means that the combination of two or more types of operation information matches a predetermined unsafe behavior estimation condition and the second determination means, it is determined that they match. And a first recording means for recording information indicating the above in a recording medium.

  According to a second aspect of the present invention, the acquisition means acquires the operation of the right turn signal, the speed of the vehicle as the operation information, and the condition for confirming the safety action is that a certain time has elapsed after the right signal is operated. 2. The deceleration amount is set to be equal to or higher than a first predetermined speed, and the unsafe behavior estimation condition is set to be accelerated without the vehicle speed becoming zero. It exists in the recording apparatus as described in.

  According to a third aspect of the present invention, the acquisition means acquires an operation of a right turn signal, a vehicle speed, an image in front of the vehicle as the operation information, and the safety action confirmation condition is that the right signal is operated. The deceleration amount after a lapse of a certain time is set to be equal to or higher than the first predetermined speed, and the estimation condition for the unsafe behavior is that an oncoming vehicle is captured in the image ahead of the vehicle and the vehicle speed is zero. The recording apparatus according to claim 1, wherein the recording apparatus is set to be accelerated.

  In the invention according to claim 4, the acquisition means acquires the current position of the vehicle and the speed of the vehicle as the operation information, and the confirmation condition of the safety action is that the current position of the vehicle is within a specified place at a specified time. 4. The method according to claim 1, wherein the unsafe behavior estimation condition is set such that the speed of the vehicle is equal to or higher than a second predetermined speed. It exists in the recording device.

  As described above, according to the first aspect of the present invention, the first determination unit is configured such that one type of operation information acquired by the acquisition unit or a combination of two or more types of operation information coincides with the safety action confirmation condition. It is determined whether or not it is a scene for which safety action is to be confirmed. When it is determined by the first determination means that the scene matches, that is, it is a scene to confirm the safety action, the second determination means is the one type of operation information or two or more types of operation information acquired by the acquisition means after that. It is determined whether or not the combination matches the unsafe behavior estimation condition, that is, whether or not the unsafe behavior has been performed. When the first recording unit determines that the second determination unit matches, that is, performs an unsafe action, information indicating that fact can be recorded in the recording medium. Therefore, it is possible to record operation information in a dangerous scene that matches the safety action confirmation condition and matches the unsafe action estimation condition and cannot be determined only by the G value.

  According to the invention described in claim 2, the safety action confirmation condition is set such that the deceleration amount after a predetermined time has elapsed since the right turn signal is operated is equal to or higher than the first predetermined speed, and the unsafe action estimation condition However, since the vehicle speed is set to be accelerated without becoming 0, it can be recorded when the suspension is ignored at the time of a right turn.

  According to the invention described in claim 3, the safety action confirmation condition is set such that the deceleration amount after the elapse of a predetermined time after the right turn signal is operated is equal to or higher than the first predetermined speed, and the unsafe action estimation condition However, since it is set that the oncoming vehicle was captured in the image ahead of the vehicle and the vehicle speed was accelerated without becoming zero, when the oncoming vehicle was on the right turn, It can be recorded.

  According to the invention of claim 4, the safety action confirmation condition is set that the current position of the vehicle is within the designated place at the designated time, and the unsafe action estimation condition is that the vehicle speed is a second predetermined value. Since it is set to be higher than the speed, it can be recorded when the second predetermined speed or higher is output at the specified place at the specified time.

It is a block diagram which shows the drive recorder as a recording device of this invention. It is a flowchart which shows the 1st recording process procedure of CPU shown in FIG. 1 in 1st Embodiment. (A) is a speed time chart when the vehicle does not pause when making a right turn, (B) is a speed time chart when changing lanes, and (C) is a temporary vehicle when making a right turn. It is a time chart of the speed when it stops. It is a time chart which shows the relationship between G value in the recording apparatus of this invention, and the operation information recorded in a recording medium. It is a flowchart which shows the 1st recording process procedure of CPU shown in FIG. 1 in 2nd Embodiment. (A) is a time chart showing whether or not the current position of the vehicle is within the designated place, (B) is a time chart showing whether or not the time is the designated time, and (C) is the speed of the vehicle. It is a time chart which shows whether it is 40 km / h or more. It is a time chart which shows the relationship between G value in the conventional recording device, and the operation information recorded in a recording medium.

First Embodiment Hereinafter, a drive recorder as a recording apparatus of the present invention in the first embodiment will be described with reference to the drawings. FIG. 1 is a block diagram showing a drive recorder as a recording apparatus of the present invention. A drive recorder 1 shown in FIG. 1 is mounted on a vehicle.

  As shown in the figure, the drive recorder 1 is connected to the camera 2, the speed sensor 3, the engine rotation sensor 4, the winker 5, the G sensor 6, the GPS receiver 7, and the drive recorder 1 A CPU 8 that controls the whole and a recording medium 9 are provided.

  The camera 2 is disposed in front of the vehicle, and always images the front of the host vehicle while the ignition switch is on. The speed sensor 3 detects the speed of the vehicle and supplies the result to the CPU 8. The engine speed sensor 4 detects the engine speed of the vehicle and supplies the result to the CPU 8. The blinker 5 detects that the right blinker has been operated, and supplies a right blinker signal indicating that to the CPU 8. The G sensor 6 detects the G value (acceleration) of the vehicle and supplies the result to the CPU 8. These camera 2, speed sensor 3, engine rotation sensor 4, turn signal 5 and G sensor 6 are connected to CPU 8 via I / Fs 10-14.

  The GPS receiver 7 is provided to acquire the current position of the host vehicle. The GPS antenna 71 receives GPS information corresponding to the current position from a GPS satellite, and demodulates the GPS information received by the GPS antenna 71. And a GPS circuit 72 for supplying to the CPU 8. The camera 2, the speed sensor 3, the engine rotation sensor 4, the blinker 5, the G sensor 6, and the GPS receiver 7 described above correspond to the acquisition means in the claims, and the image captured by the camera 2, the acceleration, the engine speed, the right The turn signal, G value, and GPS information correspond to the operation information in the claims.

  When the G value exceeds the first threshold value and the second threshold value, the operation information at that time is recorded in the storage medium 9. The recording medium 9 records information indicating that when an unsafe action such as ignoring a temporary stop is performed in a scene where it is desired to confirm the safe action, for example, when turning right, and operation information at that time.

  Next, the operation of the drive recorder 1 having the above-described configuration will be described below with reference to FIGS. FIG. 2 is a flowchart showing a first recording processing procedure of the CPU 8 shown in FIG. 3A is a speed time chart when the vehicle does not stop temporarily when making a right turn, FIG. 3B is a speed time chart when the lane is changed, and FIG. It is a time chart of the speed when it pauses when making a right turn.

  Power is supplied to the drive recorder 1 in response to the ignition on of the vehicle. In response to this power supply, the CPU 8 starts the first recording process. First, the CPU 8 functions as a first determination unit, and the right turn signal output from the turn signal 5 and the speed detected by the speed sensor 3 are predetermined safety actions. It is determined whether it is a right turn scene that matches the confirmation condition (step S1).

  This safety action confirmation condition (that is, a right turn scene) will be described with reference to FIG. As shown in FIGS. 3 (A) and 3 (C), in the case of a right turn, the vehicle speed greatly decreases after the right turn signal is output. On the other hand, as shown in FIG. 3B, in the case of changing the oblique line to the right lane, the vehicle speed does not drop significantly after the right turn signal is output. Therefore, the condition for confirming the safety action is set such that the deceleration amount Δv after the elapse of a certain time T1 after the right turn signal is output is equal to or higher than the first predetermined speed ΔV.

  When the right turn signal is not output, or as shown in FIG. 3B, the deceleration amount Δv after the elapse of a predetermined time T1 is less than the first predetermined speed ΔV even when the right turn signal is output. If not (N in step S1), the CPU 8 returns to step S1 again. On the other hand, as shown in FIG. 3A, the deceleration amount Δv after the elapse of a certain time T1 from the output of the right turn signal is equal to or higher than the first predetermined speed ΔV, which is a right turn scene ( Next, in step S1, Y), the CPU 8 functions as a second determination unit, and determines whether or not the speed detected by the speed sensor 3 matches a predetermined unsafe behavior estimation condition and the suspension is ignored. (Step S2).

  As shown in FIG. 3 (A), the unsafe behavior estimation condition (that is, disregarding the temporary stop) is determined to be a right turn scene, and the vehicle speed is accelerated without dropping to zero. Is set to be.

  As shown in FIG. 3C, after it is determined that the scene is a right turn, the vehicle is accelerated after dropping to 0, and the pause is not ignored (N in step S2). Returns to step S1 again. On the other hand, as shown in FIG. 3A, after it is determined that the scene is a right turn, the vehicle speed is accelerated without dropping to 0 and it is determined that the temporary stop is ignored (step S2). And Y), the CPU 8 functions as the first recording means and performs unsafe behavior, and records information indicating that in the recording medium 9 (step S3). After that, the CPU 8 functions as a second recording means, and the above-mentioned operation information, that is, the image in front of the vehicle, the speed, the engine speed, the G value, and the GPS information under the designated recording conditions (whether overwriting is possible) 9 (step S4), the process returns to step S1.

  In parallel with the first recording process described above, the CPU 8 records the operation information in the recording medium 9 when the G value is equal to or greater than the first threshold value and less than the second threshold value, as shown in FIG. When the threshold value is 2 or more, a second recording process is performed to record the operation information so that it cannot be overwritten in the recording medium 9.

  According to the drive recorder 1 described above, the CPU 8 determines whether or not the right turn signal and the vehicle speed acquired by the turn signal 5 and the speed sensor 3 coincide with the safety action confirmation condition (that it is a right turn scene). Then, it is determined whether or not it is a scene for which the safety action is desired to be confirmed. If it is determined that the scene is the scene for which the safety action is desired to be confirmed, then the vehicle speed acquired by the speed sensor 3 is the estimated condition for the unsafe behavior (temporary It is determined whether or not it is coincident with the disregard of stop), that is, whether or not unsafe behavior has been performed. When it is determined that the CPU 8 has performed an unsafe action, the CPU 8 records information indicating that in the recording medium 9. Therefore, as shown in FIG. 4, even if the G value is less than the first threshold, a dangerous scene that matches the safety action confirmation condition and that matches the unsafe action estimation condition and cannot be determined only by the G value. The operation information can be recorded.

  According to the drive recorder 1 described above, the confirmation condition for the safe action is set such that the deceleration amount after the elapse of a predetermined time after the right turn signal is operated is equal to or higher than the first predetermined speed, and the estimation condition for the unsafe action is Since it is set that the speed of the vehicle is accelerated without being zero after it is determined that the scene is a right turn in accordance with the confirmation condition of the safety action, that is when the temporary stop is ignored when turning right Can be recorded.

  In addition, according to 1st Embodiment mentioned above, after determining that the estimation conditions of unsafe action correspond to the confirmation conditions of safe action and are the scenes of a right turn, it accelerates without the vehicle speed becoming zero. However, the present invention is not limited to this. These estimation conditions for unsafe behavior can be changed and can be different for each company. For example, as an estimation condition for unsafe behavior, an oncoming vehicle is captured in an image ahead of the vehicle and the vehicle speed is set to 0 after it is determined that the scene is a right turn in accordance with the safety behavior confirmation condition. Instead, it may be set to be accelerated. By setting in this way, it is possible to record or report the operation when the oncoming vehicle is present at the time of a right turn and the suspension is ignored.

Second Embodiment Next, a drive recorder 1 of the present invention in a second embodiment will be described with reference to the drawings. Since the configuration of the drive recorder 1 of the present invention in the second embodiment is the same as that already described in the first embodiment with reference to FIG. 1, detailed description thereof is omitted here.

  The major difference between the first embodiment and the second embodiment is the operation of the drive recorder 1. The operation of the drive recorder 1 in the second embodiment will be described below with reference to FIG. FIG. 5 is a flowchart showing a first recording processing procedure of the CPU 8 shown in FIG. 1 in the second embodiment.

  Power is supplied to the drive recorder 1 in response to the ignition on of the vehicle. In response to this power supply, the CPU 8 starts the first recording process. First, the GPS information from the GPS receiver 7 matches a predetermined safety action confirmation condition, and the current position of the vehicle is within the designated location at the designated time. It is determined whether or not (step S5).

  If it is not the designated location or the designated time is not reached (N in step S5), the CPU 8 immediately returns to step S5. On the other hand, when the current position of the vehicle is the designated place at the designated time (Y in step S5), the CPU 8 then determines the unsafe behavior estimation condition in which the speed detected by the speed sensor 3 is predetermined. It is determined whether or not the speed is 40 km / h (= second predetermined speed) or more (step S6).

  If it is less than 40 km / h (N in step S6), the CPU 8 returns to step S1 again. On the other hand, when it is determined that the speed is 40 km / h or more (Y in step S6), the CPU 8 records the information to that effect in the recording medium 9 (step S7). After that, the CPU 8 records the above-mentioned operation information such as the image ahead of the vehicle, the speed, the engine speed, the G value, and the GPS information in the recording medium 9 under the designated conditions (whether or not overwriting is possible) (step S1). S8), the process returns to step S5.

  According to the second embodiment described above, as shown in FIG. 6, the CPU 8 determines that it is a scene where safety is to be confirmed when traveling in a specified place at a specified time, and determines that it is a scene where safety has been confirmed. If the speed is 40 km or more during the operation, it is estimated that the action is unsafe, and the fact and operation information are recorded.

  According to the second embodiment described above, the confirmation condition for the safety action is set that the current position of the vehicle is within the designated place at the designated time, and the estimation condition for the unsafe action is that the speed of the vehicle is 40 km / h or more. Therefore, it is possible to record the fact and the operation information when a speed of 40 km / h or more is output at a specified place at a specified time.

  In the second embodiment described above, the same first recording process as in the first embodiment may be performed in parallel. In addition, the safety action confirmation conditions and unsafe action estimation conditions described in the first embodiment and the second embodiment described above are examples, and these conditions can be changed as appropriate, and are set to different conditions for each company. can do.

  Further, the above-described embodiments are merely representative forms of the present invention, and the present invention is not limited to the embodiments. That is, various modifications can be made without departing from the scope of the present invention.

1 Drive recorder (recording device)
2 Camera (Acquisition means)
3 Speed sensor (acquisition means)
4 Engine rotation sensor (acquisition means)
5 Winker (Acquisition means)
6 G sensor (acquisition means)
7 GPS receiver (acquisition means)
8 CPU (first determination means, second determination means, first recording means, second recording means)
9 Recording media

Claims (4)

Obtaining means for obtaining vehicle operation information;
First determination means for determining whether one type of operation information acquired by the acquisition means or a combination of two or more types of operation information matches a predetermined safety action confirmation condition;
If it is determined by the first determination means that the two types of operation information or a combination of two or more types of operation information acquired by the acquisition means matches the predetermined unsafe behavior estimation condition Second determination means for determining whether or not,
A first recording unit that records information indicating that in the recording medium when it is determined by the second determination unit that they match,
A recording apparatus comprising: The acquisition means acquires the operation of the right turn indicator, the speed of the vehicle as the operation information,
The safety action confirmation condition is set such that a deceleration amount after a lapse of a predetermined time after the right turn signal is operated is equal to or higher than a first predetermined speed,
The recording apparatus according to claim 1, wherein the unsafe behavior estimation condition is set such that the vehicle speed is accelerated without becoming zero. The acquisition means acquires a turn right turn signal operation, a vehicle speed, an image ahead of the vehicle as the operation information,
The safety action confirmation condition is set such that a deceleration amount after a lapse of a predetermined time after the right turn signal is operated is equal to or higher than a first predetermined speed,
2. The estimation condition for the unsafe behavior is set such that an oncoming vehicle is captured in an image in front of the vehicle and the vehicle speed is accelerated without becoming zero. The recording device described. The acquisition means acquires the current position of the vehicle and the speed of the vehicle as the operation information,
The confirmation condition of the safety action is set that the current position of the vehicle is within a designated place at a designated time,
The recording apparatus according to claim 1, wherein the unsafe behavior estimation condition is set such that the speed of the vehicle is equal to or higher than a second predetermined speed.

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