WO2014208881A1

WO2014208881A1 - Event data recorder for vehicles

Info

Publication number: WO2014208881A1
Application number: PCT/KR2014/003228
Authority: WO
Inventors: 안종영
Original assignee: 주식회사 유라테크
Priority date: 2013-06-28
Filing date: 2014-04-15
Publication date: 2014-12-31
Also published as: KR20150002305A; KR101524197B1

Abstract

An event data recorder for vehicles capable of improving power consumption is disclosed. The event data recorder for vehicles comprises: a camera; a shock sensor for sensing the impact applied to a vehicle; a motion sensor for sensing a motion of an object within a predetermined distance from the vehicle; a storage unit for storing image data from the camera; and a control unit which enters into a power-saving mode when the vehicle is parked, operates the camera upon motion of the object when it is determined that the motion of the object is generated on the basis of a motion sensing signal from the motion sensor, and stores image data, captured by the camera, for a predetermined time before and after an impact generation time, in the storage unit when it is determined that impact is applied to the vehicle on the basis of an impact sensing signal from the shock sensor.

Description

Car black box

The present invention relates to a vehicle black box, and more particularly to a vehicle black box that can improve the power consumption of the vehicle black box.

The black box is mounted on the aircraft and stores the operation information of the aircraft, and is used for cause analysis in case of an aircraft accident. On the other hand, a vehicle black box (EDR: Event Data Recorder) is mounted on the vehicle, and stores the vehicle driving information such as the speed, direction, brake operation of the vehicle.

The vehicle black box is installed inside the vehicle and mainly photographs the front and stores images and / or audio of the situation before and after the accident. Recently, the popularity of the vehicle black box is gradually increasing, and the trend of selling the built-in black box in the vehicle manufacturing stage.

Such a black box for a vehicle generally includes a continuous mode in which recording is performed at any time during driving, a shock mode for recording a situation before and after an accident, a parking mode for recording a situation for a certain time during a vehicle accident, and a user manually. It can be operated in various modes, such as manual mode for recording.

However, the conventional vehicle black box has a problem in that the battery of the vehicle is over discharged when the vehicle is parked in the parking mode because it operates in a constant mode so as to prepare for an accident related to the vehicle.

An example of a vehicle yaw black box for solving the above-described problem is disclosed in Korean Patent Laid-Open No. 10-2012-004144. The vehicle black box disclosed in Korean Patent Laid-Open No. 10-2012-004144 includes a camera for capturing an image; And compressing the image information photographed by the camera while the vehicle operation mode is operated in the parking monitoring mode, and determines whether an accident occurs based on a change value of the compressed compression size, and if it is determined that the accident occurs, for a predetermined time. And a microprocessor which controls to record the generated vehicle information and the accident information in a memory.

However, since the vehicle black box disclosed in the above-described Korean Patent Publication No. 10-2012-004144 determines whether there is an accident in comparison with the captured image data, the main device inside the vehicle black box is still operated to reduce power of the vehicle battery. There is a limit to that.

Therefore, there is a need to provide a vehicle black box that can improve the power consumption of the vehicle black box in the parking mode of the vehicle black box.

An object of the present invention is to provide a vehicle black box that can reduce the power consumption of the black box in the parking mode of the vehicle black box.

Vehicle black box according to the present invention for realizing the above object is a camera; A motion sensor for detecting a motion of an object within a predetermined distance from the vehicle; A storage unit for storing image data from the camera; And a controller configured to enter a power saving mode when the vehicle is parked and to operate the camera while the movement occurs when it is determined that the movement of the object is generated based on the movement detection signal from the movement detection sensor. do.

The motion sensor includes a plurality of infrared ray generator; At least one driving unit for driving each of the at least one infrared ray generating unit under the control of the controller; A receiving unit for receiving infrared rays from the outside; And a signal processor for processing the signal corresponding to the infrared light received by the receiver to generate the motion detection signal.

The control unit controls the at least one driving unit to selectively drive the at least one infrared ray generating unit, and based on the motion detection signal from the signal processing unit by the receiving unit together with the selective driving of the at least one infrared ray generating unit. It is characterized in that for determining the direction of movement of the detected object.

The control unit may control a shooting direction of the camera according to the detected movement direction of the object.

The controller may determine whether the vehicle is parked based on the gear mode of the gear box of the vehicle and the switch position of the start switch.

The vehicle black box further includes a shock sensor for detecting a shock of the vehicle, and when the controller determines that the shock has occurred in the vehicle based on the shock detection signal from the shock sensor, the impact time point And storing the image data photographed by the camera for a predetermined time before and after the storage unit.

The vehicle black box further includes a microphone, and the controller is configured to store the voice data generated by the microphone for a predetermined time before and after the impact occurs, when it is determined that the shock is generated in the vehicle through the shock sensor. It is characterized by storing in the wealth.

According to the present invention, by minimizing the power consumption of the black box in the parking mode of the vehicle black box, it is possible to prevent the battery over-discharge of the vehicle due to excessive power consumption of the vehicle black box when the vehicle is parked for a long time.

By using a plurality of IR generators, it is possible to prevent an error caused by the motion detection sensor.

By controlling the shooting direction of the camera according to the moving direction of the object, it is possible to provide more clear information to the user in the event of an accident.

1 is a block diagram showing a vehicle black box according to an embodiment of the present invention.

2 is a flowchart illustrating an operation of the vehicle black box shown in FIG. 1.

FIG. 3 is a schematic diagram showing an example of use states of the IR generator and receiver shown in FIG. 1; FIG.

4 is a graph showing an example of a signal state detected by a receiver for an infrared signal transmitted at a plurality of frequencies.

The following merely illustrates the principles of the invention. Therefore, those skilled in the art, although not explicitly described or illustrated herein, can embody the principles of the present invention and invent various devices that fall within the spirit and scope of the present invention. In addition, all conditional terms and embodiments listed herein are in principle clearly intended to be understood only for the purpose of understanding the concept of the invention and are not to be limited to the specifically listed embodiments and states. do.

In addition, it is to be understood that all detailed descriptions, including the specific embodiments, as well as the principles, aspects, and embodiments of the present invention, are intended to include structural and functional equivalents thereof. In addition, these equivalents should be understood to include not only equivalents now known, but also equivalents to be developed in the future, that is, all devices invented to perform the same function regardless of structure.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

1 is a block diagram illustrating a vehicle black box according to an embodiment of the present invention. 2 is a flowchart illustrating an operation of the vehicle black box shown in FIG. 1.

First, referring to FIG. 1, a vehicle black box according to an exemplary embodiment of the present invention includes a motion sensor 100, a controller 200, a camera 300, an impact sensor 400, and a storage 500. do.

The camera 300 may be one or more. Therefore, the present invention is not limited by the number of the camera 300.

The shock sensor 400 detects a shock of a vehicle equipped with the black box and provides a detection result to the controller 200.

The motion sensor 100 detects a motion of an object entering within a predetermined distance from the vehicle. There is no limitation on the number of motion detection sensors 100, but it is preferable that there are two or more.

FIG. 3 is a schematic diagram illustrating an example of a state of use of the IR generator and receiver shown in FIG. 1.

In FIG. 3, a configuration is disclosed in which the

IR generators

150 and 160 transmit infrared rays at different frequencies that can be distinguished from each other, and the receiver 140 receives them.

As such, when the plurality of

IR generators

150 and 160 transmit at different frequencies, the device may be prevented from malfunctioning due to various causes, including malfunction due to light that may affect the operation of the device such as sunlight. The direction of movement can also be detected.

The storage unit 500 stores image data from the camera 300.

The controller 200 enters a power saving mode when the vehicle is parked. The controller 200 determines whether an object enters within a predetermined distance of the vehicle based on the motion detection signal from the motion sensor 100. If it is determined that the movement of the object occurs within a predetermined distance of the vehicle based on the movement detection signal from the movement detection sensor 100, the controller 200 operates the camera 300 while the movement occurs. If it is determined that the vehicle is impacted by the impact sensor 400 while the movement of the object is detected, the controller 200 may record the image data photographed by the camera 300 for a predetermined time before and after the impact occurs. Store in the storage unit 500.

4 is a graph illustrating an example of a signal detected by a receiver for an infrared signal transmitted at a plurality of frequencies.

As shown in FIG. 4, the receiving unit detects a different signal for each of different frequencies, and when a movement occurs within a reference distance, the control unit transmits a control signal to the image system to record an image.

According to an embodiment, the motion sensor 100 includes first and

second drivers

110 and 120, first and

second IR generators

150 and 160, a receiver 140, and a signal processor 130. do.

The first and

second drivers

110 and 120 drive the first and

second IR generators

150 and 160, respectively, under the control of the controller 200.

Each of the first and

second IR generators

150 and 160 is driven by the first and

second drivers

110 and 120 to transmit infrared rays to the outside.

The receiver 140 receives infrared rays from the outside and generates a signal corresponding to the received infrared rays. Subsequently, the signal generated by the receiver 140 is provided to the signal processor 130.

The signal processor 130 processes the signal from the receiver 130 and provides the processed signal to the controller 200 as a motion detection signal.

Meanwhile, the controller 200 controls the first and

second drivers

110 and 120 to selectively drive the first and

second IR generators

150 and 160. Based on the selective driving of the first and

second IR generators

150 and 160, the moving direction of the detected object may be determined based on the motion detection signal from the signal processor 130 according to the infrared reception of the receiver 140. Can be.

Accordingly, the controller 200 may control the photographing direction of the camera 300 according to the detected direction of movement of the object.

The controller 200 may determine whether the vehicle is parked based on the gear mode of the gear box 610 of the vehicle circuit 600 and the switch position of the start switch 620.

According to an embodiment, the vehicle black box may further include a microphone 700.

When it is determined that the shock occurs in the vehicle through the shock sensor 400, the controller 200 stores the voice data generated by the microphone 700 in the storage unit 500 for a predetermined time before and after the shock occurs. .

Hereinafter, the operation of the vehicle black box will be described in detail with reference to FIG. 2.

In FIG. 2, the controller 200 determines whether the vehicle is parked (S1). If the determination result of step S1 indicates that the vehicle is currently being driven rather than parked, the controller 300 enters a normal mode which is a mode at the time of driving the vehicle (S2).

In the normal mode, the vehicle black box stores the image captured by the camera 300 and the audio data from the microphone 700 in the storage unit 500. At this time, the image and audio data stored in the storage unit 500 is deleted from the previously stored data under the control of the control unit 200 to secure the storage space in the storage unit 500 while newly input image data from the camera 300 and The newly input voice data from the microphone 700 is stored.

During the operation as described above, when the shock sensor 400 detects a shock of the vehicle, the controller 200 stops deleting and storing the video and audio data to detect a shock by the shock sensor 400. Video and audio data for a predetermined time before and after from the storage unit 500 to be stored. Therefore, the situation before and after the vehicle accident is recorded in the black box.

Meanwhile, when the driver parks the vehicle, it is determined that the vehicle is parked based on the gear mode of the gear box 610 of the vehicle circuit 600 and the switch position of the start switch 620. Then, the control unit 200 switches the driving mode of the black box seen in step S3 to the sleep (sleep) mode (S3).

In operation S4, the controller 200 determines whether an object approaches the vehicle in the power saving mode (S4).

In order to determine whether the vehicle enters a predetermined distance range from the vehicle, the controller 200 selectively drives the first and

second IR generators

150 and 160 through the first and

second drivers

110 and 120. Subsequently, the control unit 200 based on the motion detection signal from the signal processing unit 130 according to the infrared reception of the receiver 140 by selective driving of the first and

second IR generators

150 and 160. It may be determined whether an object enters within a predetermined range of. In addition, the controller 200 may also determine the moving direction of the object detected based on the infrared generation of the first and

second IR generators

150 and 160 and the reception intensity from the receiver 140.

If it is determined that the movement of the object occurs within a predetermined distance of the vehicle based on the movement detection signal from the movement detection sensor 100, the controller 200 operates the camera 300 while the movement occurs.

In step S5, when detecting the entry of the object within a predetermined range, the controller 200 drives the camera 300.

On the other hand, the controller 200 is a collision (or contact) with the object entered is determined by the impact (or contact) the impact through the impact sensor 400 (S6).

In step S6, when the collision of the vehicle is detected through the impact sensor 400, in step S7, the control unit 200 may record the image data and the microphone, which are captured by the camera 300, for a predetermined time before and after the impact occurs. The voice data generated by the 700 is stored in the storage unit 500. Preferably, the control unit 200 stores in the storage unit 500 for a predetermined time before and after the impact occurs (S7).

According to the above configuration, by minimizing the power consumption of the black box in the parking mode of the vehicle black box, it is possible to prevent the battery over-discharge of the vehicle due to excessive power consumption of the vehicle black box when the vehicle is parked for a long time.

In addition, by using two or

more IR generators

150 and 160, an error caused by the motion detection sensor 100 may be prevented. By controlling the photographing direction of the camera 300 according to the moving direction of the object, it is possible to provide more clear information to the user in the event of an accident.

While the above has been shown and described with respect to preferred embodiments of the invention, the invention is not limited to the specific embodiments described above, it is usually in the art to which the invention belongs without departing from the spirit of the invention claimed in the claims. Various modifications may be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or prospect of the present invention.

Claims

camera;

A motion sensor for detecting a motion of an object within a predetermined distance from the vehicle;

A storage unit for storing image data from the camera; And

If the vehicle is parked, enters a power saving mode, and if it is determined that the movement of the object based on the motion detection signal from the motion sensor, the controller for operating the camera while the movement occurs; Car black box, characterized in that.
The method of claim 1, wherein the motion sensor

A plurality of infrared ray generators;

At least one driving unit for driving each of the at least one infrared ray generating unit under the control of the controller;

A receiving unit for receiving infrared rays from the outside; And

And a signal processor for processing the signal corresponding to the infrared light received by the receiver to generate the motion detection signal.
The method of claim 2, wherein the control unit

Controlling the at least one driving unit to selectively drive the plurality of infrared ray generating units, and by the receiving unit together with the selective driving of the at least one infrared ray generating unit, the detected based on the motion detection signal from the signal processing unit; Vehicle black box, characterized in that for determining the direction of movement of the object.
The method of claim 3, wherein the control unit

Vehicle black box, characterized in that for controlling the shooting direction of the camera in accordance with the detected direction of movement of the object.
The vehicle black box of claim 1, wherein the controller determines whether the vehicle is parked based on the gear mode of the gear box of the vehicle and the switch position of the start switch.
The method of claim 1,

Further comprising a shock sensor for detecting a shock of the vehicle,

If it is determined that the shock occurs in the vehicle based on the shock detection signal from the shock sensor, the controller stores the image data photographed by the camera in the storage unit for a predetermined time before and after the shock occurs. Vehicle black box, characterized in that.
The vehicle black box of claim 6, wherein the vehicle black box further includes a microphone, and the controller is generated by the microphone for a predetermined time before and after the impact occurs when it is determined that an impact occurs in the vehicle through the impact sensor. Vehicle black box characterized in that for storing the voice data to be stored in the storage.