JP2014067087A - Drive recorder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drive recorder capable of suppressing the occurrence of an accident related to opening and closing of a passenger door.SOLUTION: A micro computer 101 determines whether or not a person is recognized within a photographed range of a passenger door area 31 in a first image obtained by photographing the vicinity of a passenger door 43 by a first camera 102, and as a result of the determination, while determining that a person is recognized within the range, when receiving information indicating that the passenger door is opened and closed from an open/close sensor 107, determines that a recording trigger is generated.

Description

  The present invention relates to a drive recorder.

  A general drive recorder is mounted on a vehicle and used as a recording trigger (that is, a recording start condition) with detection of an impact caused by the occurrence of a collision accident in a time zone before and after the time when the recording trigger occurs. And has a function of recording image data acquired by photographing the front of the vehicle (see, for example, Patent Document 1).

JP 2012-3607 A

  According to the drive recorder having such a function, recurrence of a collision accident can be prevented by, for example, instructing the driver using the recorded image data.

  However, although the conventional drive recorder can suppress the occurrence of the collision accident in this way, it cannot suppress the recurrence of an accident other than the collision accident, for example, an accident related to opening and closing of the passenger door.

  The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a drive recorder capable of suppressing the recurrence of an accident related to opening and closing of a passenger door.

In order to achieve the above object, a drive recorder according to the present invention is characterized by the following (1) to (4).
(1) a control unit;
A first imaging unit that captures a first image by photographing the vicinity of the entrance where passengers get on and off inside the vehicle;
An opening / closing information acquisition unit for acquiring information indicating an opening / closing state of a door provided at the boarding gate;
With
In the state where the control unit determines whether a person is recognized within a predetermined range of the first image and determines that a person is recognized within the range as a result of the determination. When the information indicating that the door has been opened / closed is received from the opening / closing information acquisition unit, it is determined that a recording trigger has occurred,
about.
(2) A drive recorder configured as described in (1) above,
A recording unit for storing various types of information;
A second photographing unit that obtains a second image that is an image relating to the vehicle,
When it is determined that the recording trigger has occurred, the control unit causes the recording unit to store the second image.
about.
(3) A drive recorder configured as described in (1) above,
It further comprises a recording unit for storing various information,
When the control unit determines that the recording trigger has occurred, the control unit causes the recording unit to store the first image.
about.
(4) A drive recorder having any one of the constitutions (1) to (3),
An alarm output unit that outputs an alarm is further provided,
When the control unit determines that a person is recognized within the range as a result of the determination, the control unit causes the alarm output unit to output the alarm.
about.

In the drive recorder having the above configuration (1), it is determined whether or not there is a passenger near the boarding gate depending on whether or not a person is recognized within a predetermined range of the first image. Then, in a state where there are passengers in the vicinity of the boarding gate, when the boarding door provided at the boarding gate is opened and closed, it is determined that a recording trigger has occurred. Therefore, for example, using the recording trigger as a recording start condition, it is possible to record an image of the vicinity of the driver's seat or the vicinity of the entrance in the time zone before and after the recording trigger occurs. As a result, by using the recorded image, for example, by instructing the driver, the occurrence of a recurrence of an accident caused by the opening / closing of the boarding door despite the presence of passengers near the boarding gate. Can be suppressed. In addition, when an image obtained by photographing the vicinity of the entrance is recorded, when an in-vehicle accident occurs due to the opening / closing of the boarding door, the image at the time of occurrence of the accident can be recorded. The recorded image can also be used as a judgment material for driver's evaluation.
In the drive recorder having the configuration (2), when it is determined that a recording trigger has occurred, a second image, which is an image relating to the vehicle, acquired by the second imaging unit is recorded. That is, the second image acquired by the second imaging unit, which is an imaging unit different from the first imaging unit that acquires the first image used to determine whether there are passengers near the boarding gate. Is recorded. Unlike the first photographing unit that needs to photograph the vicinity of the entrance, the second photographing unit can be installed at any location of the vehicle. You can take pictures, take pictures of the vicinity of the driver's seat, and take pictures of the vicinity of the entrance. In other words, the user can set a location where an image is captured and an image is recorded when a recording trigger occurs to an arbitrary location.
In the drive recorder configured as described in (3) above, when it is determined that a recording trigger has occurred, a first image that is an image of the vicinity of the entrance obtained by the first imaging unit is recorded. Is done. As a result, when a recording trigger occurs, the image used for the determination of the recording trigger occurrence is recorded, so that information relating to the determination can be obtained. In addition, when a recording trigger occurs, an image of the vicinity of the boarding entrance in the time zone before and after the recording trigger occurrence time is recorded, so information about the boarding entrance at the time of the recording trigger occurrence can be obtained. .
In the drive recorder having the configuration (4), an alarm is output when a passenger is near the boarding gate. As a result, the driver can be alerted to passengers near the boarding gate, and it is possible to prevent the boarding door from being opened and closed even though there are passengers near the boarding gate.

  According to the drive recorder of the present invention, it is possible to provide a drive recorder capable of suppressing the recurrence of an accident related to opening / closing of a passenger door.

  The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through a mode for carrying out the invention described below (hereinafter referred to as “embodiment”) with reference to the accompanying drawings. .

FIG. 1 is a block diagram illustrating a hardware configuration example of the drive recorder 100 according to the present embodiment. FIG. 2 is a flowchart showing a processing routine executed by the drive recorder 100 according to the present embodiment. FIG. 3 is an explanatory diagram for explaining the interior of the vehicle in which the drive recorder 100 according to the present embodiment is mounted and the installation positions of the first camera 102 and the second camera 103 in the interior of the vehicle.

  Specific embodiments according to the drive recorder of the present invention will be described below with reference to the drawings.

First, the drive recorder 100 according to the present embodiment will be schematically described.
The drive recorder 100 according to the present embodiment is mounted and used in a vehicle such as a route bus. In the drive recorder 100, in the stop state where the vehicle is stopped, it is determined whether or not there is a passenger near the boarding gate based on the first image obtained by photographing the vicinity of the boarding gate. As a result of the determination, if it is determined that there is a passenger near the boarding gate, an alarm sound indicating that there is a passenger near the boarding gate is output. And when it is determined that there are passengers near the boarding gate, when the boarding door provided at the boarding gate is opened and closed, it is determined that a recording trigger has occurred, and the recording trigger has occurred. A second image obtained by photographing the vicinity of the driver's seat is recorded in a time zone extending before and after the time point.

  In the present embodiment, as shown in FIG. 3, the drive recorder 100 is used for seating a seat portion 41 on which a seat for a passenger is seated, and for passengers to ride in a standing state because they move inside the vehicle. A description will be given of a case where the vehicle is used by being mounted on a route bus provided with a passage portion 42 where no seat is installed and a boarding opening 43 provided in the middle in the front-rear direction of the passenger compartment for passengers to get on and off. .

Next, a specific configuration of the drive recorder 100 will be described.
As shown in FIG. 1, the drive recorder 100 includes a microcomputer (CPU: Central Processing Unit) 101, a first camera 102, a second camera 103, an acceleration sensor 104, a speed sensor 105, and a GPS (Grobal Positioning System) receiving unit 106. An open / close sensor 107, a random access memory (RAM) 108, a read only memory (ROM) 109, a memory card 110, an external monitor 111, a speaker 112, and an interface 113 to an interface 120. Below, these each structure is demonstrated.

  The microcomputer 101 is a control unit, executes a program prepared in advance, and performs various processes necessary for realizing the functions of the drive recorder 100. For example, the microcomputer 101 performs the process shown in the flowchart of FIG.

  Further, the microcomputer 101 has an image processing unit 101a. The image processing unit 101a has a function of processing image data input from a first camera 102, which will be described later, and determining whether there is a passenger near the boarding gate. Details of the process for determining whether or not there are passengers in the vicinity of the entrance will be described later.

  The first camera 102 is an in-vehicle camera as a first imaging unit, and is installed in the middle of the vehicle, for example, as shown in FIG. 3, and is a boarding port that is a predetermined range in the vicinity of the boarding port 43. Image data representing a first image acquired by photographing a range including at least a part of the region (region indicated by a dotted line in FIG. 3) 31 is output to the microcomputer 101 via the interface 113.

  The second camera 103 is an in-vehicle camera as a second imaging unit, and is installed in the front of the vehicle, for example, as shown in FIG. 3, and is a driver seat area (a predetermined range in the vicinity of the driver seat) ( Image data representing a second image acquired by photographing a range including at least a part of (a region indicated by a dotted line in FIG. 3) 33 is output to the microcomputer 101 via the interface 114.

  The acceleration sensor 104 is an acceleration information acquisition unit, detects acceleration in the three-axis direction of the vehicle, and outputs the detected acceleration value to the microcomputer 101 via the interface 115.

  The speed sensor 105 is a speed information acquisition unit, detects the speed of the vehicle, and outputs the detected speed value to the microcomputer 101 via the interface 116.

  The GPS reception unit 106 is a position information acquisition unit, receives a GPS signal, and outputs the current vehicle position information to the microcomputer 101 via the interface 117.

  The open / close sensor 107 is an open / close information acquisition unit that detects the open / closed state of the boarding door provided at the boarding port 43 and outputs information indicating the current open / closed state of the door to the microcomputer 101 via the interface 118. To do.

  The RAM 108 is a memory that can freely read and write data as one of the recording units, and is used to hold various data used temporarily.

  A ROM 109 is a read-only memory as one of recording units, and holds in advance a program to be executed by the microcomputer 101 and necessary data. For example, the ROM 109 holds various data referred to by the microcomputer 101 in the processing shown in FIG.

  The memory card 110 is an external storage medium as a recording unit, is detachably connected to the drive recorder 100, and is configured to record various information such as image data. The memory card 110 is detachably attached to, for example, an external device (PC (Personal Computer) or the like, not shown) included in the office system. Accordingly, the drive recorder 100 according to the present embodiment transmits image data and the like to the external device via the memory card 110. When the drive recorder 100 is operated, the memory card 110 is connected to the drive recorder 100.

  The external monitor 111 is a display unit as one of the alarm output units, and is configured by, for example, a liquid crystal device. Desired information such as an image can be displayed graphically. In the present embodiment, the external monitor 111 is configured as a housing separate from the housing of the drive recorder 100, and is installed in the vicinity of the driver's seat in a manner that is visible to the driver so as to present various information to the driver. Used for Instead of the external monitor 111 or in addition to the external monitor 111, various types of information may be presented to the driver by a display unit provided on the side of the housing of the drive recorder 100.

  The speaker 112 is an audio output unit as one of alarm output units, and outputs predetermined audio in accordance with an input signal received from the microcomputer 101 via the interface 120.

Next, the operation of the drive recorder 100 will be described.
FIG. 2 is a flowchart showing a processing routine executed by the drive recorder 100 according to the present embodiment.
First, the driver turns on the ignition switch. As a result, a DC voltage (Vcc) is supplied to the microcomputer 101, and the microcomputer 101 starts operation.

  In step S21, the microcomputer 101 determines whether or not the vehicle is stopped. More specifically, the microcomputer 101 determines whether or not the current vehicle speed value received from the speed sensor 105 is smaller than a predetermined threshold value. As a result of the determination, if it is determined that the vehicle is in a stopped state, the microcomputer 101 executes the process of step S22. On the other hand, as a result of the determination, if it is determined that the vehicle is not in a stopped state (that is, the vehicle is traveling), the microcomputer 101 executes the process of step S21 again.

  In step S <b> 22, the microcomputer 101 determines whether there is a passenger near the boarding opening 43. More specifically, the image processing unit 101a of the microcomputer 101 recognizes a person within a range in which the boarding area 31 is captured in the first image acquired by the first camera 102 by image recognition processing. It is determined whether or not. The image processing unit 101 a determines that there is a passenger near the boarding opening 43 when a person is recognized within the range where the boarding area 31 is captured. If the microcomputer 101 determines that there are passengers near the boarding opening 43, the microcomputer 101 executes the process of step S23. On the other hand, when the microcomputer 101 determines that there are no passengers near the boarding opening 43, the microcomputer 101 executes the process of step S21 again.

  In step S <b> 23, the microcomputer 101 causes the speaker 112 to output a passenger presence alarm, which is an alarm sound that is emitted to the driver when there are passengers near the boarding opening 43. More specifically, for example, the microcomputer 101 causes the speaker 112 to output a sound saying “There are passengers near the entrance / exit. Be careful when opening and closing the door” on the speaker 112.

  Subsequently, in step S <b> 24, the microcomputer 101 determines whether the boarding door has been opened or closed based on the signal received from the opening / closing sensor 107. As a result of the determination, if it is determined that the boarding door has been opened and closed, the microcomputer 101 determines that a recording trigger has occurred and executes the process of step S25. On the other hand, if it is determined that the boarding door is not opened or closed as a result of the determination, the microcomputer 101 executes the process of step S21 again.

  In step S25, the microcomputer 101 obtains the second time acquired by the second camera 103 during a time period before and after the time when it is determined in step S24 that the boarding door is opened and closed (for example, 5 seconds). Are stored in the memory card 110.

  By the processing described above, it is determined whether or not there is a passenger near the entrance based on the first image obtained by photographing the vicinity of the entrance 43 while the vehicle is stopped (step S21, Step S22). As a result of the determination, if it is determined that there is a passenger near the boarding opening 43, an alarm sound indicating that there is a passenger near the boarding opening is output (step S23). When it is determined that there are passengers near the boarding port 43, when the boarding door provided at the boarding port 43 is opened and closed, it is determined that a recording trigger has occurred (step S24). A second image obtained by photographing the vicinity of the driver's seat is recorded in a time zone spanning the time before and after the recording trigger is generated (step S25).

  Below, the effect | action and effect of the drive recorder 100 which concern on this embodiment are demonstrated.

Until now, in the case of a route bus, there have been cases where accidents have occurred due to opening and closing of the boarding doors even though there are passengers near the boarding gate. For example, a passenger is injured by being sandwiched between a closed door and a boarding gate, or when the door suddenly opens, the passenger falls to the outside of the passenger compartment and is injured. In some cases, passengers could fall and get injured when they left the car before they left.
On the other hand, the drive recorder 100 according to the present embodiment obtains a first image by photographing the vicinity of the microcomputer 101 (control unit) and the entrance 43 where passengers get on and off inside the vehicle. A camera 102 (first imaging unit) and an open / close sensor 107 (open / close information acquisition unit) that acquires information indicating the open / closed state of the boarding door provided at the boarding port 43 are provided. Then, the microcomputer 101 determines whether or not a person is recognized within a range in which the boarding area 31 is captured within the predetermined range in the first image. When a signal indicating that the boarding door is opened and closed is received from the open / close sensor 107 in a state where it is determined that a person has been recognized, it is determined that a recording trigger has occurred.
Thereby, in the drive recorder 100, it is determined whether there is a passenger in the vicinity of the entrance 43 depending on whether or not a person is recognized within the range in which the entrance area 31 is captured in the first image. When a passenger is near the boarding port 43 and the boarding door provided at the boarding port 43 is opened and closed, it is determined that a recording trigger has occurred. For this reason, the drive recorder 100 can record a second image obtained by photographing the vicinity of the driver's seat in the time zone before and after the recording trigger occurrence time, using the recording trigger as a recording start condition. Thus, by using the recorded second image, for example, the driver is instructed to open and close the boarding door as described above even though there are passengers near the boarding port 43. The occurrence of accidents due to this can be suppressed. In addition, when an in-vehicle accident occurs due to the opening / closing of the boarding door, an image at the time when the accident occurs can be recorded. The recorded second image can also be used as a judgment material for driver's evaluation.
Thus, according to the drive recorder 100 which concerns on this embodiment, the drive recorder which can suppress generation | occurrence | production of the accident regarding opening / closing of a boarding door can be provided.

Further, the drive recorder 100 according to the present embodiment includes a memory card 110 (recording unit) that stores various information, a second camera 103 (second imaging unit) that acquires a second image that is an image related to the vehicle, and the like. Are further provided. If the microcomputer 101 determines that a recording trigger has occurred, the microcomputer 101 stores the second image in the memory card 110.
In the drive recorder 100 according to the present embodiment, the second camera 103 captures the vicinity of the driver's seat. For this reason, when it is determined that the recording trigger has occurred, the second image obtained by photographing the vicinity of the driver's seat by the second camera 103 is recorded. As a result, for example, by providing guidance to the driver using the recorded image of the vicinity of the driver's seat, as described above, there are passengers in the vicinity of the entrance 43 for getting on. Occurrence of an accident caused by opening and closing of the door can be suppressed.
By the way, in the drive recorder 100 according to the present embodiment, when it is determined that a recording trigger has occurred, the second image acquired by the second camera 103 is recorded. That is, the second image acquired by the second camera 103, which is a photographing unit different from the first camera 102 that acquires the first image used for determining whether or not there are passengers near the entrance 43. To be recorded. Unlike the first camera 102 that needs to photograph the vicinity of the entrance 43, the second camera 103 can be installed at any location of the vehicle. For this reason, for example, the front of the vehicle can be photographed or the rear of the vehicle can be photographed by the second camera 103. For this reason, when the recording trigger occurs, the user can determine the location where the image is captured and the image is recorded as an arbitrary location.
That is, in the drive recorder 100 according to the present embodiment, the second camera 103 is configured to capture the vicinity of the driver's seat and acquire the second image, but the second camera 103 is the vehicle as the second image. For example, the second camera 103 may be attached to the upper part of the vehicle interior, and the second image may be acquired by photographing the front of the vehicle.

The drive recorder 100 according to the present embodiment further includes a speaker 112 as an alarm output unit that outputs an alarm. When the microcomputer 101 determines that a person is recognized within the range as a result of the determination as to whether or not the person is recognized within the range in which the boarding area 31 is captured in the first image. Causes the speaker 112 to output a passenger presence warning.
Accordingly, the driver can be alerted to passengers near the boarding opening 43, and the boarding door can be prevented from being opened and closed despite the presence of passengers near the boarding opening 43.

  The technical scope of the present invention is not limited to the embodiment described above. The above-described embodiments can be accompanied by various modifications and improvements within the technical scope of the present invention.

For example, in the drive recorder 100 according to the present embodiment, the second image is stored in the memory card 110 when it is determined that a recording trigger has occurred, but instead of the second image, A configuration may be adopted in which a first image obtained by photographing the vicinity of the entrance 43 where passengers get on and off inside the vehicle is stored. In other words, the image used for determining whether there is a passenger near the boarding opening 43 and the image stored in the memory card 110 when the recording trigger is generated may be the same image.
That is, the drive recorder 100 includes a microcomputer 101, a first camera 102 that captures a first image by capturing the vicinity of the entrance 43 where passengers get on and off inside the vehicle, and a boarding provided in the entrance 43. An open / close sensor 107 that acquires information indicating the open / closed state of the door, and the microcomputer 101 recognizes the person within the range in which the boarding area 31 is captured within the predetermined range in the first image. When a signal indicating that the boarding door is opened / closed is received from the opening / closing sensor 107 in a state where it is determined that a person is recognized within the range as a result of the determination. May be configured to determine that a recording trigger has occurred and cause the memory card 110 to record the first image. In this case, the drive recorder 100 does not necessarily need to include the second camera 103.
According to the drive recorder 100 having this configuration, when a recording trigger occurs, the first image used for the determination of the recording trigger occurrence is recorded, so information relating to the determination can be obtained. In addition, when a recording trigger occurs, it is possible to record an image of the vicinity of the boarding opening 43 in the time zone before and after the recording triggering time, so that information about the boarding opening at the time of the recording trigger occurrence is obtained. be able to.

  Further, in the drive recorder 100 according to the present embodiment, whether or not a person is recognized within the range in which the entrance area 31 of the first image acquired by the first camera 102 is captured by the image recognition process. However, it is determined whether there is a person standing or moving within the range by the image recognition process. By doing so, it may be configured to determine whether there is a standing passenger near the entrance 43.

  In the drive recorder 100 according to the present embodiment, the alarm is output as audio information from the speaker 112 in step S23. However, the alarm is output as visual information, for example, by text on the external monitor 111. A configuration presented to the driver may be used. Alternatively, the various alarms may be output as audio information by a headset (not shown) that can be worn by the driver.

Further, in the drive recorder 100 according to the present embodiment, the first camera 102 causes the entrance area 31 that is a predetermined range in the vicinity of the entrance 43 provided in the middle in the front-rear direction of the passenger compartment. The image obtained by photographing is used as a first image, and based on the first image, it is determined whether or not there is a passenger near the entrance 43, but the entrance provided in the front of the passenger compartment A configuration in which a boarding area 32 that is a predetermined range in the vicinity of 44 is photographed by the second camera 103 and whether or not there is a passenger in the vicinity of the boarding opening 44 is determined based on the acquired image. I do not care.
In this case, for example, the vicinity of the entrance 43 is photographed by the first camera 102 and the vicinity of the entrance 44 is photographed by the second camera 103, and either one of the entrance 43 or the entrance 44 is boarded. It is determined whether there is a passenger near the mouth, and it is determined that a recording trigger has occurred when there is a passenger near one of the entrances, and an image of the entrance that is determined to have a passenger is taken. It may be configured to be recorded, or the first camera 102 is not installed and only the second camera 103 is used to photograph the vicinity of the entrance 44 and the vicinity of the driver's seat, and whether there are passengers in the vicinity of the entrance 44 It is possible to determine that a recording trigger has occurred when there is a passenger near the boarding port 44 and the image acquired by the second camera 103 is recorded.

  In addition, regarding the drive recorder 100 according to the present embodiment, only the function of determining that a recording trigger has occurred and recording an image when the boarding door is opened and closed in a state where passengers are in the vicinity of the entrance 43 is described. However, the drive recorder 100 is the same as a general drive recorder that records image data acquired in the time zone before and after the point of time when the impact is detected, with the detection of the impact associated with the occurrence of a collision accident as a recording start condition. Needless to say, the above-described function may be provided.

DESCRIPTION OF SYMBOLS 100 Drive recorder 101 Microcomputer 101a Image processing part 102 1st camera 103 2nd camera 104 Acceleration sensor 105 Speed sensor 106 GPS receiving part 107 Opening / closing sensor 108 RAM
109 ROM
110 Memory card 111 External monitor 112 Speaker 113-120 Interface 31 Boarding area 32 Boarding area 33 Driver's seat area 41 Seat part 42 Passage part 43 Boarding opening

Claims (4)

A control unit;
A first imaging unit that captures a first image by photographing the vicinity of the entrance where passengers get on and off inside the vehicle;
An opening / closing information acquisition unit for acquiring information indicating an opening / closing state of a door provided at the boarding gate;
With
In the state where the control unit determines whether a person is recognized within a predetermined range of the first image and determines that a person is recognized within the range as a result of the determination. When the information indicating that the door has been opened / closed is received from the opening / closing information acquisition unit, it is determined that a recording trigger has occurred,
A drive recorder characterized by that. A recording unit for storing various types of information;
A second photographing unit that obtains a second image that is an image relating to the vehicle,
When it is determined that the recording trigger has occurred, the control unit causes the recording unit to store the second image.
The drive recorder according to claim 1. It further comprises a recording unit for storing various information,
When the control unit determines that the recording trigger has occurred, the control unit causes the recording unit to store the first image.
The drive recorder according to claim 1. An alarm output unit that outputs an alarm is further provided,
When the control unit determines that a person is recognized within the range as a result of the determination, the control unit causes the alarm output unit to output the alarm.
The drive recorder according to any one of claims 1 to 3, characterized in that:

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