KR101544421B1 - METHOD AND APPARATUS FOR CONTROLLING BLACKBOX USING G sensor - Google Patents

Abstract

According to the present invention, disclosed is an apparatus for controlling a vehicle black box using an impact sensor. According to the present invention, the apparatus extracts event information on the basis of an impact signal supplied from the impact sensor installed at a position of a vehicle, and sets a focus distance of a camera lens on the basis of an image view angle which is previously defined in correspondence to the extracted event information, and adjusts a lens on the basis of the focus distance of the lens. Accordingly, the apparatus can remove the shortcomings that a vehicle speed is constant on a traveling road collected through the lens or the image view angle is fixed in a GPS shadow area. The apparatus extracts vehicle plate number among the road traveling information acquired from the image collected through the lens of the camera and stores the extracted information on a vehicle plate number in correspondence to a traveling time. Thus, the apparatus can search out a getaway vehicle on the basis of the stored vehicle plate number corresponding to the traveling time which is separately prepared as to a non-recorded image section as to a prior section where the vehicle speed is not received, and can minimize a storage space of the image as to the traveling road.

Description

TECHNICAL FIELD [0001] The present invention relates to a black box control device and a method for controlling a black box using a shock sensor,

The present invention relates to an apparatus and method for controlling a black box for a vehicle using a shock sensor, and more particularly, to an apparatus and method for setting a video recording area and a storage area on the basis of event information supplied from an impact sensor (G sensor) And methods.

A typical automobile black box is connected to a camera installed in the front and rear of the vehicle and various sensors inside the automobile, thereby recording the driving state of the vehicle and the state of the accident.

In such a black box, the recognition device using the situation image in the running state and the accident scene acquires the image of the target for recognition in the moving object by using a camera or the like, and then extracts the characteristic of the target using the digital image processing technique, In order to smoothly perform the functions of the image recognition apparatus, it is necessary to extract the target line more precisely from the moving object.

Most of the methods of acquiring the traveling road as the image as described above acquire the image of the running road using the camera. When the running road is recognized as the image using the camera, The sharpness according to the perspective of the object to be recognized and the image angle of view which is the viewing angle of the image recognized by the camera are determined. That is, when the focal length of the camera is short according to the lens provided in the camera, the viewing angle of the image captured by the camera, that is, the angle of view of the image is widened so that the image can be widely recognized. On the contrary, when the focal length of the camera is long, there is a merit that the distant view is clearly visible on the image taken on the driving road, but the view angle of the image recognized by the camera is reduced, and the near image is not recognized completely.

In order to compensate for these drawbacks, the angle of view of a picture in a general black box can be adjusted based on a vehicle speed signal. That is, the focal length of the camera is controlled so that the image can be captured at an angle of view set on the basis of the vehicle speed signal. For example, when the vehicle is cornering, the focal length of the camera is controlled so as to shorten the angle of view when traveling at low speed, so that the near vision image is more clearly recognized.

However, since the focal length of the camera is shortened in order to widen the angle of view when the vehicle is cornering at a high rotation speed, a long distance image is often taken, so that an image that is irrelevant to the image of the actual driving road occasionally occurs.

In addition, in the case of a general black box, in a shaded area of a GPS used to detect a vehicle speed, the image capturing angle of a road is fixed, and in a signal-waiting or temporary stop, 50 km / h), the focal length of the camera changes.

It is therefore an object of the present invention to extract event information based on an impact signal supplied from a shock sensor installed at a predetermined position of a vehicle, The focal length of the camera is set on the basis of the defined image angle of view, and the lens is adjusted based on the set focal distance, so that the vehicle speed is constant on the traveling road collected through the lens, And an object of the present invention is to provide a vehicle black box control apparatus and method using an impact sensor capable of fundamentally eliminating the disadvantage that the angle of view is fixed.

It is another object of the present invention to provide an image processing apparatus and method that extracts an image of a vehicle number among images collected through a lens of a camera and separately stores the image corresponding to the running time, And an object of the present invention is to provide an apparatus and method for controlling a vehicle black box using an impact sensor capable of detecting an escape vehicle on the basis of a stored vehicle number corresponding to a travel time separately provided when the escape vehicle is difficult to analyze.

According to a first aspect of the present invention, there is provided an apparatus for controlling a vehicle black box using a shock sensor,

A plurality of lenses

An impact sensor that is fixedly mounted on a predetermined area of the vehicle and outputs an impact signal generated by an impact of the vehicle body;

A controller for extracting event information by analyzing an impact signal of the impact sensor, deriving a previously stored image angle corresponding to the extracted event information, and adjusting a focal distance of the lens based on the derived image angle of view,

And an image processing unit for processing the image of the traveling road collected through the lens to obtain the road running information and storing the obtained road running information in the main memory.

Preferably, the impulse signal

And generates the three-dimensional coordinate system having the X, Y, and Z axes as the impact signal generated in the vehicle body.

Preferably, the event information

And the shock sensor is provided with an impact signal whose variation value of the impact signal is equal to or greater than a predetermined threshold value (set value) from the impact detection sensor collected at a predetermined period.

Preferably, the vehicle black box device using the impact sensor

Further comprising a GPS processing unit for receiving a vehicle speed signal at a predefined cycle,

Wherein,

Extracting event information on the basis of the vehicle speed information collected through the GPS processing unit and the impact signal of the impact detection sensor, deriving a previously stored image angle corresponding to the extracted event information, And adjusting the lens according to the focal distance of the lens.

Preferably, the image processing unit includes:

Extracting vehicle number information from the collected traveling road information, and storing the extracted vehicle number information in a sub-memory corresponding to the running time as a separate file from the image file.

According to a second aspect of the present invention, there is provided a vehicle black box control method using a shock sensor,

Collecting an impact signal of the impact detection sensor at predetermined intervals in a state in which the black box power supply is turned on in the control unit;

An event extracting step of analyzing the impact signal to extract event information;

An image angle extraction step of deriving an image angle of view corresponding to the extracted corresponding event information;

A lens control step of adjusting the lens to a focal length of a predefined lens based on the derived image angle of view; And

And an image processing step of processing the image collected from the lens of which the focal length of the lens is adjusted to obtain road running information and storing the obtained road running information in the main memory corresponding to the running time.

Preferably, the event information

And the shock sensor is provided with an impact signal whose fluctuation width of the impact signal is equal to or greater than a predetermined set value from the impact detection sensor collected at a predetermined period.

Preferably, the vehicle black box device using the impact sensor

Further comprising the step of receiving a vehicle speed signal supplied from the GPS processor at a predefined period,

In the event extracting step,

And extracts event information based on a vehicle speed signal collected through the GPS processor and an impact signal of the impact sensor.

Preferably, the image processing step includes:

Extracting vehicle number information from the collected traveling road information, and storing the extracted vehicle number information in a sub-memory corresponding to the traveling time.

As described above, the method and apparatus for controlling a vehicle black box using the impact sensor according to the present invention extracts event information based on an impact signal supplied from a shock sensor installed at a predetermined position of a vehicle, The focal length of the camera lens is set on the basis of the previously defined image angle of view corresponding to the information and the lens is adjusted based on the focal distance of the set lens so that the vehicle speed is constant on the traveling road collected through the lens, It is possible to fundamentally eliminate the disadvantage that the image field angle is fixed in the region.

In addition, according to the present invention, vehicle number information is extracted from road running information obtained from an image collected through a lens of a camera, and the extracted vehicle number information is separately stored in correspondence with the running time, It is possible to search for an escape vehicle on the basis of the stored vehicle number corresponding to the travel time separately provided for the unrecorded video segment for the segment, and to save the image storage space for the roadway to a minimum.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the description of the invention given below, serve to further understand the technical idea of the invention. And should not be construed as limiting.
FIG. 1 is a view illustrating a configuration of a vehicle black box control apparatus using a shock detection sensor according to an embodiment of the present invention. Referring to FIG.
2 is a diagram illustrating an impact signal and a vehicle speed signal of a shock sensor according to an embodiment of the present invention.
3 is a flowchart illustrating a vehicle black box control process using a shock sensor according to another embodiment of the present invention.

For a better understanding of the present invention and its operational advantages and the objects attained by the practice of the present invention, reference should be made to the accompanying drawings and the accompanying drawings which illustrate preferred embodiments of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the preferred embodiments of the present invention with reference to the accompanying drawings. Like reference symbols in the drawings denote like elements.

FIG. 1 is a view showing a configuration of a vehicle black box control apparatus using a shock detection sensor according to an embodiment of the present invention. FIG. 2 is an exemplary view showing an impact signal and a vehicle speed signal of the shock detection sensor shown in FIG.

As shown in FIGS. 1 and 2, an apparatus for controlling a vehicle using a shock sensor according to an embodiment of the present invention determines an image angle of view based on an impact signal and a vehicle speed signal supplied from an impact sensor, Interrupts the lens with the focal length of the lens set according to the image angle of view, and processes and stores the image obtained from the lens.

1, the vehicle black box control apparatus includes a plurality of lenses 10, an impact detection sensor 23, a GPS processing unit 21, a control unit 30, an image processing unit 40, A memory 51, and a sub-memory 53 as shown in Fig.

The plurality of lenses 10 are installed in the main body so as to photograph the state of the traveling road. Usually, the plurality of lenses 10 are adjusted so that the angle of view is 20 to 180 degrees.

Meanwhile, the impact sensor 23 is fixed to a predetermined position of the main body, and detects the variation of the vehicle body to generate an impact signal for each of the three-dimensional X, Y, and Z axes. The process of detecting the variation of the vehicle body by the impact sensor 23 and generating the impact signal is similar to or the same as the process of generating the fluctuation and the impact signal by the general impact sensor, do.

The impact signals for the three-dimensional X, Y, and Z axes are as shown in A ', A' ', A' '' in FIG.

Meanwhile, the GPS processor 21 derives a vehicle speed signal based on position information supplied from a GPS (Global Position System), and the derived vehicle speed signal is supplied to the controller 30.

The vehicle speed signal supplied from the GPS processor 23 is generated in units of 1 sec as shown in Fig. 2B. That is, at 100 km / h, the vehicle speed signal is received every 27 m / sec. Therefore, with respect to the travel section within 27 m, the vehicle angle is not changed and the angle of view is fixed.

Accordingly, the predetermined period 50 msec for collecting the impact signal from the impact sensor 21 is shorter than the period (27 m / sec) at which the vehicle speed signal is received by the GPS processor 23, When the impact signal is used, it is possible to adjust the angle of view 20 times.

That is, for the travel section within 27 m, the image angle of view is derived on the basis of the impact signal of the impact sensor, and the lens is adjusted to the focal distance of the lens based on the derived image angle of view, And acquires the road running information from the received image.

The control unit 30 analyzes the vehicle speed signal of the GPS processing unit 23 and the impact signal of the impact sensor 21 to generate event information and outputs the generated event information to the camera lens 10) is adjusted.

For example, as shown in the area a in FIG. 2, the control unit 30 determines that the fluctuation width of the impact signal A? Of the Y axis is equal to or less than a preset threshold value ), It is determined that an event has occurred and event information is generated.

2, when the shock signals for the X, Y, and Z axes are all constant while the vehicle speed signal B is 0 Hz, ), It is determined that an event has occurred and event information is generated.

The control unit 30 derives the image angle of view corresponding to each of the event information described above and sets the focal distance of the lens 10 corresponding to the derived image angle of view, (10).

That is, the focal length of the lens 10 corresponding to the image angle of view and the angle of view is stored as a lookup table value corresponding to the event information of the controller 30. For example, as a result of analysis of the vehicle speed signal and the impact signal at the control unit 30, if the fluctuation width of the impact signal is equal to or greater than a predetermined threshold value (set value) despite the vehicle speed signal being constant, the control unit 30 may rotate leftward or rightward And the focal length of the lens is stored so that the focal length of the camera lens is shortened in accordance with the obtained angle of view of the maximum value to capture the near image clearly.

At this time, the image collected through the lens of the camera is provided to the image processing unit 40, and the image processing unit 40 converts the collected image into a digital signal and converts the converted digital image data so that the boundary between the object and the background becomes clear And obtains road running information by filtering.

The obtained road driving information includes the driving time of the image, and the main memory 51 stores the obtained driving information corresponding to the driving time.

In addition, the image processing unit 40 extracts the vehicle number from the converted digital image data, and transmits the extracted vehicle number and the obtained travel time to the sub-memory 53 separately provided.

The server memory 53 stores the vehicle number corresponding to the received running time.

In the present embodiment, the case where the control section 30, the image processing section 40, the main memory 51, and the server memory 53 are mounted has been described. However, these configurations do not necessarily require the control unit 30, the image processing unit 40, the main memory 51, and the sub memory 53 to be separately mounted as components in the black box. One or a plurality of these structures may be realized by another member or a management apparatus, or may be integrated as a single apparatus.

According to this configuration, the controller 30 receives an impact signal from the impact sensor 23 after a predetermined period of time, and receives a vehicle speed signal from the GPS processor 21 at a predetermined cycle.

The control unit 30 analyzes the received impact signal and the vehicle speed signal, determines whether an event has occurred according to the analysis result, and generates event information. Then, the control unit 30 derives a previously stored view angle corresponding to the event information, The lens is adjusted according to the focal distance of the predetermined lens 10.

The control unit 30 transmits the image received through the adjusted lens 10 to the image processing unit 40. The image processing unit 40 converts the received image into digital data, And the road running information is obtained after filtering so that the boundary of the background is clarified.

The image processing unit 40 provides road driving information to the main memory 51, and the main memory 51 stores the received driving information corresponding to the driving time.

On the other hand, the image processing unit 40 extracts the vehicle number among the obtained road driving information, and then transmits the extracted vehicle number to the sub-memory 53.

The sub memory 53 stores the received vehicle number corresponding to the running time.

According to the embodiment of the present invention, the image angle of view is derived based on the vehicle speed signal and the impact signal of the vehicle body, and the lens is adjusted to the focal distance of the predefined lens according to the derived image angle of view. As the information is acquired and stored, the image viewing angle can be maximized with a large number of lenses, so that the image of the road can be recognized more vividly and clearly. The cause of the accident occurring instantaneously and the vehicle number recognition for the escape vehicle Can be correctly read.

And a controller for setting the focal distance of the camera lens based on a predefined image angle of view corresponding to the extracted event information, By adjusting the lens with respect to the focal length, it is possible to fundamentally eliminate the disadvantage that the vehicle speed is constant on the traveling road collected through the lens, or the image angle of view is fixed in the shadow area of the GFS.

In addition, according to the present invention, vehicle number information is extracted from road running information obtained from an image collected through a lens of a camera, and the extracted vehicle number information is separately stored in correspondence with the running time, It is possible to search for the escape vehicle on the basis of the stored vehicle number corresponding to the travel time separately provided for the unrecorded video segment for the segment and to save the image storage space for the travel road to a minimum.

On the other hand, the imaging angle is determined on the basis of the vehicle speed signal and the impact signal, the lens is adjusted to the focal distance of the predetermined lens based on the determined imaging angle, and the driving road information and the vehicle number information are acquired from the received image through the adjusted lens And storing it in a storage space will be described with reference to FIG.

FIG. 3 is a flowchart illustrating a control process of the control unit of FIG. 1. Referring to FIG. 3, a process of controlling a vehicle black box using the impact sensor according to another embodiment of the present invention will be described.

First, the control unit 30 receives an impact signal and a vehicle speed signal supplied from the outside after starting the engine (step 101), and derives a video image angle based on the received vehicle speed signal and the impact signal.

That is, the controller 30 analyzes the vehicle speed signal and the impact signal (step 103), determines whether the variation of the impact signal of the predetermined period is equal to or greater than a preset threshold value (step 105) If it is determined that the event has occurred, event information is generated (step 107), the previously stored image angle of view corresponding to the generated event information is derived, the focal distance of the lens corresponding to the derived image angle of view is set, (Steps 109 and 111).

Then, the image received through the adjusted lens is transmitted to the image processing unit 40, and the image processing unit 40 converts the image collected through the lens through the step 111 into a digital signal, The main memory 51 stores the road driving information corresponding to the driving time through step 111, in step 115. In step 115, the road driving information is obtained.

The image processing unit 40 extracts the vehicle number from the obtained road running information and transmits the extracted vehicle number information to the sub memory 53 in step 117. The sub memory 53 stores the received vehicle number information And stores it in correspondence with the running time (step 119).

Then, the control unit 30 determines whether the black box power supply is off (step 121). If the black box power supply is off, the control unit 30 terminates the program. If the black box power supply is not off, the control unit 30 proceeds to step 101 do.

Meanwhile, in the embodiment of the present invention, it is determined that the recording speed can be controlled according to the vehicle speed signal, and the process of controlling the recording speed according to the vehicle speed can be easily performed by those skilled in the art. Therefore, Is omitted. In addition, when the ignition key is turned off, the vehicle mode is switched to the parking mode, and it is determined whether the vehicle is to be recorded or not according to the remaining amount of the battery. A detailed description thereof will be omitted.

In addition, in the embodiment of the present invention, the event information is generated based on the behavior of the vehicle speed signal and the impact signal. However, the present invention is not limited to this, and the event information may be generated only by the behavior of the impact signal

And a controller for setting the focal distance of the camera lens based on a predefined image angle of view corresponding to the extracted event information, By adjusting the lens with respect to the focal length, it is possible to fundamentally eliminate the disadvantage that the vehicle speed is constant on the traveling road collected through the lens, or the image angle of view is fixed in the shadow area of the GFS.

In addition, according to the present invention, vehicle number information is extracted from road running information obtained from an image collected through a lens of a camera, and the extracted vehicle number information is separately stored in correspondence with the running time, It is possible to search for the escape vehicle on the basis of the stored vehicle number corresponding to the travel time separately provided for the unrecorded video segment for the segment and to save the image storage space for the travel road to a minimum.

The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied in the form of a program form which may be performed via a variety of computing means and recorded in a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like, alone or in combination. The program instructions recorded on the medium may be those specially designed and constructed for the present invention or may be available to those skilled in the art of computer software. Examples of computer-readable media include magnetic media such as hard disks, floppy disks and magnetic tape; optical media such as CD-ROMs and DVDs; magnetic media such as floppy disks; Magneto-optical media, and hardware devices specifically configured to store and execute program instructions such as ROM, RAM, flash memory, and the like. Examples of program instructions include machine language code such as those produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

And a controller for setting the focal distance of the camera lens based on a predefined image angle of view corresponding to the extracted event information, By adjusting the lens based on the focal length, it is possible to fundamentally eliminate the disadvantage that the vehicle speed is constant on the running road collected through the lens, or the image angle of view is fixed in the shaded area of the GPS satellites, And the extracted vehicle number information is stored separately in correspondence with the driving time so as to correspond to the traveling time separately provided for the unrecorded video section for the existing vehicle speed signal non- Based on the stored vehicle number, it is possible to identify the escape vehicle, It is possible to make a great progress in terms of the accuracy and reliability of operation of the vehicle black box control device and method using the shock sensor which can reduce the storage space of the image about the road to a minimum and further to the performance efficiency, It is not only a possibility that a black box for a vehicle is commercially available, but it is also an industrially applicable invention since it is practically possible to carry out clearly.

Claims (9)

A plurality of lenses
An impact sensor that is fixedly mounted on a predetermined area of the vehicle and outputs an impact signal generated by an impact of the vehicle body;
A controller for extracting event information by analyzing an impact signal of the impact sensor, deriving a previously stored image angle corresponding to the extracted event information, and adjusting a focal distance of the lens based on the derived image angle of view,
And an image processor for processing road images collected through the lens to obtain road driving information and storing the obtained road driving information in a main memory. The method of claim 1,
Wherein the impact signal generated in the vehicle body is generated in a three-dimensional coordinate system having X, Y, and Z axes. The method of claim 1,
Wherein the shock sensor is provided with an impact signal whose fluctuation range of the impact signal is greater than or equal to a predetermined threshold value.
. The apparatus of claim 1, wherein the vehicle black box device using the impact sensor
Further comprising a GPS processing section for receiving a vehicle speed signal at a predetermined cycle
Wherein,
Extracting event information on the basis of the vehicle speed information collected through the GPS processing unit and the impact signal of the impact detection sensor, deriving a previously stored image angle corresponding to the extracted event information, Wherein the controller is configured to adjust the lens according to the focal distance of the lens. The image processing apparatus according to claim 1,
And extracting the vehicle number information from the collected traveling road information, and storing the extracted vehicle number information in the sub-memory corresponding to the traveling time. Collecting an impact signal of the impact detection sensor at predetermined intervals in a state in which the black box power supply is turned on in the control unit;
An event extracting step of analyzing the impact signal to extract event information;
An image angle extraction step of deriving an image angle of view corresponding to the extracted corresponding event information;
A lens control step of adjusting the lens to a focal length of a predefined lens based on the derived image angle of view; And
And an image processing step of processing the image collected from the lens of which the focal length of the lens is adjusted to obtain road running information and storing the obtained road running information in the main memory in correspondence with the running time. Control method of vehicle black box using sensor. 7. The method of claim 6,
Wherein the shock sensor is provided with an impact signal whose fluctuation width of an impact signal is greater than a predetermined threshold value (set value) The apparatus of claim 6, wherein the vehicle black box device using the impact sensor
Further comprising the step of receiving the vehicle speed signal supplied from the GPS processing unit at a predefined period,
In the event extracting step,
Wherein the event information is extracted based on a vehicle speed signal collected through the GPS processor and an impact signal of the impact sensor. 9. The image processing method according to claim 8,
And storing the extracted car number information in a sub-memory corresponding to the driving time after extracting the car number information from the collected traveling road information.

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