KR20200005914A - Car black box with security function - Google Patents

Abstract

The present invention relates to a black box for a vehicle having a security function and, more specifically, to a method for controlling a function of a black box for a vehicle installed in a vehicle entering a security area. The black box for a vehicle having a security function comprises: a communication unit to receive a security mode setting signal or a security mode cancelation signal from the outside; a control unit to switch a photographing mode to a security mode or a general mode depending on the security mode setting signal or the security mode cancelation signal received via the communication unit; an image information generation unit including a camera sensor for photographing an image; a storage unit including a temporary storage unit to temporarily store images photographed by the camera sensor, and a permanent storage unit to permanently store an image requiring permanent storage among images stored in the temporary storage unit; and a vehicle driving state sensing unit to sense one dynamic force among acceleration, vibration, and impact of a vehicle from the sensor to measure acceleration information of the vehicle. If an external impact is determined to have been applied based on acceleration information measured by the vehicle driving state sensing unit, some images among the images stored in the temporary storage unit are stored in the permanent storage unit.

Description

Car black box with security function

The present invention relates to a vehicle black box having a security function, and more particularly to a method for controlling the function of the vehicle black box installed in a vehicle entering the security area.

The black box was originally developed for an aircraft, and serves to record the state and communication contents of the aircraft's altitude, route, speed, engine status, and the like. In the event of an aircraft accident, a black box can be collected and analyzed to help determine the exact situation of the aircraft. Today, black boxes are installed in vehicles as well as aircraft. Car black boxes are also called 'EDR (Event Data Recorder)', and many camera type products. It is mainly installed near the room mirror inside the vehicle or on the dashboard. It records the video in front of the vehicle and records it as a video, and is mainly used to cover sisbibi in the event of a traffic accident.

Depending on the product, two or more cameras may be installed to photograph not only the front, but also the rear and the side at the same time.In the case of a vehicle such as a taxi or a bus used by an unspecified number, a black box that records the inside of the vehicle while recording voice do. In addition, there are products that always shoot during driving regardless of a collision, a product that detects a sudden movement of a vehicle and shoots only a moment of collision, or a product that works only when parking. There are many. There's also an all-in-one black box with navigation and high-pass features.

In addition to a separate black box for a vehicle, a car black box may be mounted from the beginning by a car manufacturer. At this time, whether the pedal (accelerator, brake) or steering wheel (handle) is operated, the speed of the vehicle, the state of the seat belt, etc. are recorded, so that the accident situation can be investigated more systematically and accurately. This type of black box is widely used in the United States and Europe, where car black boxes have a high penetration rate.

However, when a vehicle with a vehicle black box enters a military security facility or an industrial security facility, there is a need to prevent a vehicle black box with a built-in camera in areas requiring confidential information or military security.

Therefore, there is a problem in that it is not possible to check, recover or return the power of the black box for the vehicle that enters and exits each time.

Korean Registered Patent No. 10-1515582 (Invention name: Facility security management device and method using short-range communication) Korean Registered Patent No. 10-1234347 (Name of the invention: Method of providing security-enhanced vehicle black box service based on watermarking technology)

An object of the present invention is to propose a method for controlling a vehicle black box installed in a vehicle entering the security area.

Another object of the present invention is to propose a method of limiting image capturing and storage of a camera built in a black box in a secure area.

Another problem to be solved by the present invention is to propose a method for differentiating the storage method of the image according to the location of the impact.

Another object of the present invention is to propose a method of deleting a captured image and a stored image according to a specific event signal.

To this end, a vehicle black box with a security function of the present invention includes a communication unit for receiving a security mode setting signal or a security mode release signal from the outside; A control unit for switching a shooting mode to a security mode or a normal mode according to a security mode setting signal or a security mode release signal received through the communication unit; An image information generator including a camera sensor to capture an image; A storage unit including a temporary storage unit for temporarily storing an image photographed by the camera sensor and a permanent storage unit for permanently storing an image requiring permanent storage among the images stored in the temporary storage unit; A vehicle driving state sensing unit configured to measure acceleration information of the vehicle by detecting a dynamic force of at least one of acceleration, vibration, and impact of the vehicle from a sensor; And when it is determined that an external shock is applied based on the acceleration information measured by the vehicle driving state sensing unit, some of the images stored in the temporary storage unit are stored in the permanent storage unit.

The vehicle black box according to the present invention may implement a security function by setting only the security mode in a security area where security is required and storing only necessary images among images captured by the camera sensor. In addition, the existing security forcibly cut off the power or remove the memory forcibly, but the present invention can implement a security function simply compared to the existing by setting the software program in the vehicle black box security mode.

In addition, the present invention can simply implement a function proposed in the present invention because only a software program is installed in the existing vehicle black box. In particular, the present invention is to be forced to block the operation of the camera sensor in the security area, or to select to store only the minimum image, it can be operated differently according to the security level.

1 is a view showing the configuration of a vehicle black box according to an embodiment of the present invention.
2 is a flowchart illustrating an operation of a vehicle black box according to an embodiment of the present invention.

The foregoing and further aspects of the present invention will become more apparent through the preferred embodiments described with reference to the accompanying drawings. Hereinafter will be described in detail to enable those skilled in the art to easily understand and reproduce through this embodiment of the present invention.

1 is a view showing the configuration of a vehicle black box according to an embodiment of the present invention. Hereinafter, the configuration of the vehicle black box according to an embodiment of the present invention will be described in detail with reference to FIG. 1.

Referring to FIG. 1, a vehicle black box includes an image information generator 110, a vehicle driving state detector 120, a speed calculator 130, an operation mode determiner 140, a controller 150, and a storage 160. ) And the communication unit 170.

The image information generator 110 captures an image of the front or rear of the vehicle from the camera sensor and generates image information accordingly. Here, the camera sensor may be mounted in the vehicle black box 100 according to an embodiment of the present invention, and in some embodiments, may be located inside the vehicle.

According to an embodiment, the image information generating unit 110 may include a front camera sensor photographing the front of the vehicle, a rear camera sensor photographing the rear of the vehicle, and a side camera sensor photographing the left and right directions of the vehicle, respectively. Image capturing may be performed in all directions, and image information may be generated accordingly, and types, numbers, and positions of camera sensors are not limited.

The camera sensor may include a fixed front camera sensor or a rear camera sensor cabled together with the front camera sensor, or both a side camera sensor cabled together with the front camera sensor and the rear camera sensor according to a function or a purpose. Can be.

In addition, the image information generating unit 110 may rewritable image information photographed from a camera sensor including RAM, EEPROM, SD memory, NAND memory, SSD, hard disk, and flash memory. A memory module may be stored in at least one of the storage media, and the memory module may convert and store the captured image information into a set resolution and size, and include data including the shooting position and time information of the vehicle. You can also save it.

According to an exemplary embodiment, the memory module may include an event generation storage module for separately storing a captured image for a predetermined time according to an event occurrence from the controller 150.

The image information generator 110 may generate image information using at least one of a radar, a rider, and a camera sensor, and is not limited to the type and number of devices.

The vehicle driving state sensor 120 detects a dynamic force of any one of acceleration, vibration, and impact of the vehicle from the acceleration sensor, and measures the acceleration information of the vehicle.

For example, the vehicle driving state detector 120 may measure acceleration information including slope information of the vehicle from the acceleration sensor. Here, the acceleration sensor may be mounted in the intelligent vehicle black box 100 according to an embodiment of the present invention, and depending on the embodiment may be located inside the vehicle, but the type, number and location of the acceleration sensor are not limited. Do not. In addition, the acceleration sensor may be a three-axis acceleration sensor that can calculate the acceleration of all of the X, Y, Z axis with respect to the vehicle.

According to an exemplary embodiment, the vehicle driving state detecting unit 120 may detect the longitudinal acceleration and the lateral acceleration of the vehicle by calculating the acceleration on the X, Y, and Z axes using the acceleration sensor. In addition to the acceleration sensor, the present invention can operate on a 9-axis sensor including a gyro sensor, a geomagnetic sensor, and a temperature sensor.

The speed calculator 130 calculates speed information of the vehicle based on the measured acceleration information. The speed calculator 130 may calculate a rate of change of the acceleration of the vehicle based on the measured change in speed, determine a state of movement of the vehicle based on the calculated change rate, and calculate speed information of the vehicle indicating the speed. .

For example, the speed calculator 130 may calculate the speed information of the vehicle by integrating the acceleration information including the tilt information of the vehicle.

The speed calculator 130 may measure the measured acceleration information for a predetermined time and measure the standard deviation A of the acceleration change rate of the vehicle indicating the acceleration change, the current acceleration information, and the immediately previous acceleration information.

In addition, according to an embodiment, the speed calculator 130 may accelerate or decelerate the vehicle by determining the speed of the vehicle at a constant speed if the deviation of the current acceleration information is greater than the measured previous acceleration information. And speed information of the vehicle including the constant speed state.

Here, the speed calculator 130 checks whether the measured standard deviation A of the acceleration change rate is smaller than the preset acceleration threshold, and if the speed is smaller than the preset acceleration threshold, the speed of the vehicle is determined in the stop mode, that is, the speed and speed of the vehicle. All accelerations in the advancing direction can be set to "0".

In addition, the speed calculator 130 checks whether the absolute value J between the current acceleration information and the immediately previous acceleration information is greater than the threshold JTH of the preset acceleration difference value, if it is not smaller than the preset acceleration threshold value. If it is larger than the threshold JTH of the preset acceleration difference value, the speed information of the vehicle may be calculated from the acceleration change rate of the vehicle.

Here, the threshold JTH of the preset acceleration difference value may mean a set value for determining whether the vehicle is slow. Therefore, the speed calculator 130 may calculate speed information of a predetermined slow speed or more by comparing a predetermined speed designated as a slow speed with an absolute acceleration J of the current acceleration information of the vehicle and the immediately preceding acceleration information.

In addition, according to the exemplary embodiment, the speed calculator 130 may include a difference between the first longitudinal acceleration and the second longitudinal acceleration measured from the first acceleration sensor and the second acceleration sensor of the vehicle driving state detection unit 120, and The rotation angle of the vehicle can be inferred from the distance value between the first acceleration sensor and the second acceleration sensor, and the speed information with high accuracy can be calculated based on the rotation angle of the inferred vehicle and the acceleration change rate according to the measured acceleration change. It may be.

The operation mode determination unit 140 determines the operation mode of the vehicle by using the calculated speed information and the generated image information. The operation mode determination unit 140 may determine at least one operation mode among the emergency braking, lane departure, forward collision, and preceding vehicle departure using the calculated speed information and the generated image information.

The storage unit 160 is divided into a temporary storage unit and a permanent storage unit, the temporary storage unit stores the image taken from the camera sensor for a set time, the permanent storage unit stores the image that requires permanent storage of the image stored in the temporary storage unit do. The image requiring permanent storage stores an image of a time period set before and after a corresponding time point when the acceleration, vibration, and impact of the vehicle measured by the vehicle driving state detecting unit 120 are greater than or equal to a set threshold. In addition, the present invention includes a security mode storage unit for storing the image in the security mode. As described above, when the security mode setting signal is received, the present invention enters the security mode, and the image captured in the entered security mode is stored in the security mode storage unit.

The communication unit 170 communicates with an external device, and particularly, receives a security mode setting signal and a security mode release signal in connection with the present invention. The security mode setting signal is a signal for requesting to set the mode of the vehicle black box to the security mode, and the security mode release signal is a signal for canceling the set security mode. The security mode will be described later.

The controller 150 controls the operation of the vehicle black box 100 according to the present invention. That is, the controller sets the mode of the vehicle black box 100 to the security mode according to the security mode setting signal provided from the outside, and sets the mode of the vehicle black box 100 to the general mode according to the security mode release signal.

In addition, the vehicle black box according to the present invention may include a display unit and a power supply unit. The display unit indicates the current state of the vehicle black box or displays an image captured by the camera sensor. In addition, the display unit indicates whether the mode of the vehicle black box is in a security mode or a security mode release state, and displays information for receiving necessary information from the driver. The display unit may not display an image captured by the camera sensor in the security mode. In addition, the display unit may include a light emitting device, and may display necessary information using the light emitting device.

The power supply unit may receive power from an external separate component or may be built in. The power supply unit supplies power for driving the vehicle black box, and in connection with the present invention, the power supply unit may block the power supply provided to the camera sensor in the security mode at the request of the controller.

2 is a flowchart illustrating an operation performed in a vehicle black box according to an embodiment of the present invention. Hereinafter, the operation performed in the vehicle black box according to an embodiment of the present invention will be described in detail with reference to FIG. 2.

In operation S200, the vehicle black box performs driving. That is, the vehicle black box temporarily stores the image photographed from the camera sensor and, if necessary, permanently stores the image necessary for the permanent storage unit.

In operation S205, the vehicle black box checks whether the security mode setting signal is received. The security mode setting signal may be received using GPS location information or through local area communication. That is, the vehicle black box may receive the security mode setting signal through short-range communication or may set the security mode using GPS location information without receiving a separate signal. In addition, the vehicle black box may set a security mode in various ways.

In step S210, the vehicle black box displays the security mode state through the display unit as Display, LED, ..., and if necessary, the security mode outputs the voice (or transmits the security state to an external device).

In step S215 the vehicle black box enters the security mode. Hereinafter, the operation of the vehicle black box in the security mode will be described.

The vehicle black box may be driven in two forms depending on the security state in the security mode. First, the car black box blocks the operation of the camera sensor. That is, the vehicle black box blocks the image shooting. In detail, the image of the camera sensor is blocked by using a program stored in the vehicle black box.

The second method is to store only minimal images. In the security mode, check whether the power of the car black box is forcibly cut off or if there is a change in the external storage device.If the power is forcibly cut off or the external storage device is changed, it is transferred to an external server or a user terminal. Notify me.

To this end, the vehicle black box proposed by the present invention first checks whether the power-on operation state before the power-off is a specific mode memory value or a security mode program operation state in the initial booting mode. If the security mode state value is not, the vehicle black box enters the normal mode and performs the corresponding operation. If the security mode state value, the vehicle black box is determined to have arbitrarily removed the power or the external storage device has entered the black box security notification operation state. In addition, as described above, a voice alarm message, a vibration, or a video is output or the external server or a set user terminal is notified that the power is forcibly shut down or the external storage device is changed in the security mode.

Referring to the second driving method in detail among the two security mode driving methods described above, when the vehicle black box proposed in the present invention is powered on, before the power-off in a specific area memory value or the security mode program operation state in the initial boot mode First check whether the operation status is the start in the security mode state. If the security mode state value, the vehicle black box is determined to have removed the power arbitrarily or changes in the external storage device forcibly delete (discard) the image stored in the security mode storage unit.

In addition, the security mode setting signal includes location information on the security area, and thus the vehicle black box receiving the security board setting signal stores the information on the security area. In the vehicle black box proposed in the present invention, when the power is turned on, the vehicle black box first checks whether a specific region memory value or a security mode program operation state before the power-off is a security mode state value in the initial booting mode. If the security mode state value, the vehicle black box is determined to remove the power arbitrarily, and thus determine whether the current location is a security area. If the current location is a secure area, the stored image is not discarded. If not, the stored image is discarded. By doing so, the vehicle black box can prevent the images taken in the security area to be carried out to the area outside the security area to the minimum.

As described above, a separate image is not taken in the security area, but in the case of a lot of vehicle movement, an unintended collision or collision of the vehicle may occur, so the minimum image is stored. To this end, in the security mode, instead of storing the image in the existing permanent storage area, the image is stored in the security mode storage unit managed separately in the security mode. Of course, the image stored in the security mode storage unit can be confirmed by releasing information or a device having a separate security mode release key. Of course, you can limit the number of checks if necessary. In particular, when the user wants to confirm the image stored in the security mode storage without the security mode release key, the stored image is forcibly discarded.

In addition, when the security mode is released, the image stored in the security mode storage unit is forcibly discarded. Therefore, the image stored in the security mode storage can be checked only in the security area. In addition, when the security mode is released, the remaining images other than the image stored by the external shock among the images stored in the security mode storage may be forcibly discarded. That is, the image stored by the external shock (the image stored in the security mode storage unit) may be forcibly discarded when the security mode is released or, if necessary, may not be discarded even if the security mode is released. In contrast, images stored in the temporary storage unit are forcibly discarded when the security mode is released.

In addition, if necessary, the image stored in the security mode storage unit may add a watermark to check image history information, or store the image as a secure image so that it can be viewed only in a specific password-coded app.

In addition, in general, when the battery voltage of the vehicle is a low voltage, the power of the black box is automatically turned off, the present invention outputs that the battery voltage of the vehicle is low voltage in the security mode to the outside after turning off the black box.

In step S220, the vehicle black box checks whether the security mode release signal is received. The security mode release signal may be received using GPS location information or through local area communication. That is, the vehicle black box may receive the security mode release signal through short-range communication or may release the security mode using GPS location information without receiving a separate signal. In addition, the vehicle black box may release the security mode in various ways.

In operation S225, the vehicle black box indicates that the security mode is released through the display unit, and outputs a voice that the security mode is released if necessary.

In step S230 the vehicle black box enters the normal mode. In the normal mode, the vehicle black box performs the operation of a commonly used black box.

In connection with the present invention, the vehicle driving state detecting unit 120 detects a dynamic force of any one of acceleration, vibration, and impact of the vehicle from the acceleration sensor to measure information of the acceleration of the vehicle. In addition, when an impact is detected to the outside by using the acceleration sensor, it may be determined in which direction the impact is detected. That is, when the acceleration increases, it may be determined that an impact (collision) is applied from the rear, and when the acceleration decreases, it may be determined that an impact (collision) is applied from the front. In addition, when the acceleration increases in the left direction, it may be determined that an impact is applied in the left direction, and when the acceleration increases in the right direction, it may be determined that an impact is applied in the right direction.

The present invention stores only the image of the portion taken in accordance with the impact direction. That is, when it is determined that the impact is applied from the front, the image taken by the camera photographing the front is stored, and the image taken from the other direction is not stored. In addition, when it is determined that an impact is applied from the rear side, the image captured by the camera photographing the rear side is stored, and the image shot from the other direction is not stored. Of course, the stored image stores the image for a set time based on the time point at which the impact is applied among the temporarily stored images.

In addition, the storage length of the image photographing the direction in which the external shock is applied and the image photographing the direction in which the impact is not applied may be different according to the user's setting. For example, if the storage time of the image photographing the direction to which the impact is applied is 5 seconds, the storage time of the image photographing the direction to which the impact is not applied may be 3 seconds. As described above, the present invention may determine the direction in which the impact is applied by using the acceleration sensor, and store only an image photographing the direction, or store the image photographing a direction other than the direction relatively short. In this way, in the event of an accident in a secure area, only minimal images can be stored.

In addition, when it is determined that the image is taken in the direction of the external impact, or when it is determined that the impact is greater than the measured value, the movement of the impact was applied to the black box vehicle by reading the object movement in the captured image Temporarily stored images can be permanently stored only if they are read, and the number of facilities in the secure area can be reduced.

In addition, the present invention may further install a camera for photographing the driver in the vehicle, by using it to register the necessary to access the driver's or occupant's face, ID card, etc. when moving to the security area in the state temporarily stored in the memory The vehicle black box that receives the security mode setting signal at the door of the security area transmits the image taken by the camera and the boarding (picture) information to the access control server (server), and checks whether it is a registered person at the access control center (server). Transmit access signal to vehicle black box and access control device. The access control officer confirms the access permission notification of the access control device or the vehicle black box and opens the door. If the driver or the occupant is not a predetermined driver, the vehicle black box that receives the confirmation necessary information is output and a warning sound is output, or the external access controller notifies the external control manager that the driver is not a preset driver. In this way, the security area is more smoothly entering and exiting the driver or passengers.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. .

100: vehicle black box 110: image information generating unit
120: vehicle driving state detection unit 130: speed calculation unit
140: operation mode determination unit 150: control unit
160: storage unit 170: communication unit

Claims (6)

A communication unit configured to receive a security mode setting signal or a security mode release signal from the outside;
A control unit for switching a shooting mode to a security mode or a normal mode according to a security mode setting signal or a security mode release signal received through the communication unit;
An image information generator including a camera sensor to capture an image;
A storage unit including a temporary storage unit for temporarily storing an image photographed by the camera sensor and a permanent storage unit for permanently storing an image requiring permanent storage among the images stored in the temporary storage unit;
A vehicle driving state sensing unit configured to measure acceleration information of the vehicle by detecting a dynamic force of at least one of acceleration, vibration, and impact of the vehicle from a sensor; And
If it is determined that an external shock is applied based on the acceleration information measured by the vehicle driving state detection unit, a vehicle black box having a security function for storing some of the image stored in the temporary storage unit in the permanent storage unit.
The method of claim 1,
In the security mode, a playback length of an image of which the camera sensor itself is turned off or the photographed image is not stored in the temporary storage unit or the image is required to be stored in the permanent storage unit among the images stored in the temporary storage unit according to a security state is used. Vehicle black box with a security feature, characterized by changing the storage.
The method of claim 2, wherein the control unit,
When the security mode release signal is received, the vehicle black box with a security function, characterized in that for discarding the image meeting the set condition among the image stored in the temporary storage and the permanent storage in the security mode.
The method of claim 2, wherein the control unit,
When the power is turned on, the vehicle black box with a security function, characterized in that the initial boot mode checks whether the operation mode before the power off was the security mode.
The method of claim 2, wherein the control unit,
When it is determined that an external shock is applied based on the measured acceleration information, the image photographing the direction in which the impact is applied is stored in the permanent storage, and the image photographing the direction in which the impact is not applied is not stored in the permanent storage. Car black box with security features, characterized in that not.
The method of claim 2, wherein the control unit,
When it is determined that the image is taken in the direction of the external impact or when the impact is greater than the set value, if the movement of the object is read from the temporarily stored image is stored temporarily when there is a movement that is read from the external impact Car black box with a security function, characterized in that the image is stored in the permanent storage.

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