KR101039246B1 - Apparatus and Method for recording event using variable threshold - Google Patents

Abstract

An apparatus and method for storing information such as a video corresponding to an event using a variable threshold value are disclosed. According to an aspect of the present invention, there is provided an apparatus for storing events generated in a vehicle, the apparatus comprising: a vehicle information receiving unit for receiving vehicle information about the vehicle; A threshold value adjuster for adjusting a threshold value based on the received vehicle information; An event detection unit for detecting the occurrence of the event based on the adjusted threshold value; And an event information storage unit for storing event information corresponding to the event when it is detected that an event has occurred. According to this, event information such as video recording can be efficiently stored.

Vehicle, Event, Storage, Threshold, Variable

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an event storage apparatus and method using variable threshold values,

The present invention relates to an apparatus and method for storing information such as a video corresponding to an event using a variable threshold value.

As vehicles become everyday necessities, side effects such as parking problems, traffic problems and traffic accidents are also increasing.

In particular, traffic accidents can be resolved satisfactorily by agreement between the parties, but when the judgment of degree of error is ambiguous, agreement between the parties is not easy, and in the case of hit-and-run accident, it causes serious aftereffects from the moral point of view .

Therefore, the necessity of handling traffic accidents based on objective data is getting more urgent. Considering this necessity, there are various methods that can be used as objective data in case of actual mounting of devices such as an airplane's black box in a vehicle It is getting out.

The car black box system currently being developed is mainly based on a method of recording and storing image data of the surroundings of a vehicle using a camera. In addition to this, a method of recording and storing voice in an accident situation and driving information of various vehicles is also being developed. The running information of the vehicle to be recorded may include information such as the speed of the vehicle, the steering angle, and the like.

Image data for the outside of the vehicle and / or the inside of the vehicle is recorded and stored when a shock is applied to the vehicle or a predetermined event such as a sudden break occurs in the vehicle black box system including the video recording apparatus. Generally, an image photographed by a camera provided to the outside of the vehicle or the inside of the vehicle using a power source supplied from the vehicle battery is processed and stored in a storage medium. The storage medium stores information such as images photographed while the vehicle is running. In this case, it is possible to recognize that an event has occurred only when the system has preset thresholds or thresholds directly set by the user and the threshold value is exceeded.

When the user directly sets the threshold value, when the threshold value is set low, the system recognizes the event as an event even in a non-event situation, and stores unnecessary image data. Thus, there is a limitation in that a certain storage area of a storage device having a finite capacity is unnecessarily used. In addition, when the threshold value is set to a high value, the event may not be recognized as an event and may not be stored in the storage device.

In addition, unnecessary event information that a real user does not want may be stored in a storage device when a manufacturer arbitrarily sets a threshold value.

Even if the same event occurs, the detection may be very weak when the vehicle is stationary, and when the threshold value is fixed, the event may not be recognized and important information may not be stored.

The above-described background technology is technical information that the inventor holds for the derivation of the present invention or acquired in the process of deriving the present invention, and can not necessarily be a known technology disclosed to the general public prior to the filing of the present invention.

Accordingly, the present invention prevents the storage of unnecessary event information that the user does not desire, changes the threshold value for detecting the event according to the speed of the vehicle, and stores important event information according to the situation, thereby efficiently storing event information such as video recording And to provide an event storage device and method capable of storing the event data.

According to an aspect of the present invention, there is provided an apparatus for storing events generated in a vehicle, the apparatus comprising: a vehicle information receiving unit for receiving vehicle information about the vehicle; A threshold value adjuster for adjusting a threshold value based on the received vehicle information; An event detection unit for detecting the occurrence of the event based on the adjusted threshold value; And an event information storage unit for storing event information corresponding to the event when it is detected that an event has occurred.

The threshold value adjuster may vary the threshold value according to the vehicle speed acquired from the vehicle information.

The event sensing unit may be one of a gyroscope sensor, an acceleration sensor, an angular velocity sensor, a shock sensor, a vibration sensor, or a combination thereof.

The event information may include image information for one or more of the inside and the outside of the vehicle.

Wherein the event information storage unit comprises: a video input unit for receiving video data photographed for at least one of the inside and the outside of the vehicle; An encoding unit encoding the image data; And a storage unit for permanently storing the encoded image data.

The vehicle information may be GPS information, self-diagnostic information, sensor information, or a combination thereof. Here, the threshold adjusting unit may obtain the vehicle speed of the vehicle from at least one of the GPS information, the self-diagnosis information, and the sensor information.

The threshold value adjuster may determine whether the threshold value needs to be adjusted based on the vehicle information, and may adjust the threshold value when it is determined that adjustment of the threshold value is necessary.

According to another aspect of the present invention, there is provided a method of storing an event occurring in a vehicle provided in a vehicle, and a recording medium recording a program for performing the method.

An event storage method according to an exemplary embodiment includes: (a) receiving vehicle information about the vehicle; (b) adjusting a threshold value based on the received vehicle information; (c) detecting the occurrence of the event based on the adjusted threshold value; And (d) storing event information corresponding to the event when the event is detected to have occurred.

The step (b) may vary the threshold value according to the vehicle speed acquired from the vehicle information.

The event information may include image information for one or more of the inside and the outside of the vehicle.

The step (d) includes the steps of: (d-1) receiving photographed image data for at least one of the inside and the outside of the vehicle; (d-2) encoding the image data; And (d-3) permanently storing the encoded image data.

The vehicle information may be GPS information, self-diagnostic information, sensor information, or a combination thereof.

(B-1) obtaining the vehicle speed of the vehicle from at least one of the GPS information, the self-diagnostic information, and the sensor information before the step (b).

The step (b) includes the steps of: (b-1) determining whether adjustment of the threshold value is necessary based on the vehicle information; And (b-2) adjusting the threshold value when it is determined that the adjustment of the threshold value is necessary.

Other aspects, features, and advantages will become apparent from the following drawings, claims, and detailed description of the invention.

According to the preferred embodiment of the present invention, it is possible to prevent unnecessary storage of event information by the user, to change threshold values for event detection according to the vehicle speed, to store important event information according to the situation, Can be stored.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

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

FIG. 1 is a schematic block diagram of an event storage apparatus according to an embodiment of the present invention. FIG. 2 is a graph of a threshold value fixed regardless of conventional vehicle information. FIG. And a threshold value that can be variably set according to the vehicle information.

Referring to FIG. 1, an event storage unit 100, a vehicle information receiving unit 110, a threshold adjusting unit 120, an event detecting unit 130, and an event information storing unit 140 are illustrated.

In this embodiment, the vehicle information is provided to the vehicle, and by using the received vehicle information, a threshold value serving as a reference for detecting an event is adjusted, thereby enabling efficient and accurate detection of an event occurring in the vehicle and storing the information.

The event storage apparatus 100 includes a vehicle information receiving unit 110, a threshold adjusting unit 120, an event sensing unit 130, and an event information storage unit 140.

The vehicle information receiving unit 110 receives vehicle information capable of acquiring the vehicle speed.

The vehicle information may be self-diagnostic information such as OBD1 (On-Board Diagnostic I) information, OBD2 information, KOBD (Korean OBD) information, GPS information, or sensor information.

The self-diagnosis information includes mechanical control information related to the vehicle received from the self-diagnosis apparatus provided in the vehicle, for example, whether or not to wear the seat belt, vehicle speed, steering angle, gear position, The self-diagnosis device is connected to an electronic control unit (ECU) of the vehicle that controls all parts of the vehicle such as the drive system, the braking system, and the steering system, as well as the automatic transmission control, and diagnoses various information related to the running of the vehicle. The self-diagnosis information can be transmitted from the self-diagnosis apparatus to the vehicle information receiving unit 110 through OBD communication such as CAN (Controller Area Network) communication and K-line communication.

The GPS information includes coordinates, azimuth, time, velocity, direction values, etc. related to the GPS of the vehicle received from the GPS device of the vehicle. The GPS device is connected to a navigation device or the like to provide data on the current position of the vehicle, the vehicle speed, the direction of the vehicle, and the like. In this embodiment, the GPS device can transmit such data to the vehicle information receiving unit 110.

The sensor information includes an acceleration sensing value, an angular velocity sensing value, a gyroscope sensing value, and an impact sensing value received from various sensors such as a gyroscope sensor, an acceleration sensor, an angular velocity sensor, and an impact sensor.

The vehicle speed can be directly extracted from the self-diagnosis information. Alternatively, the vehicle speed can be calculated using GSP coordinates and time among the GPS information, or the calculated vehicle speed can be extracted. Alternatively, the vehicle speed can be calculated using the acceleration sensing value and the angular velocity sensing value among the sensor information.

The process of acquiring the vehicle speed from the vehicle information may be performed by the vehicle information receiving unit 110 or may be performed by the threshold adjusting unit 120 to be described later.

The threshold value adjuster 120 adjusts a threshold value that is a criterion for determining whether an event is generated based on the vehicle information received through the vehicle information receiver 110. [

Here, the threshold value is a reference value in detecting the occurrence of an event in the event detecting unit 130, which will be described later. For example, when the sensing value measured by various sensors included in the event sensing unit 130 or connected to the event sensing unit 130 is equal to or greater than a threshold value, the threshold adjusting unit 120 The threshold value can be varied according to the obtainable vehicle speed by calculating based on the received vehicle information or extracting it from the vehicle information. The sensing value may be set to be detected as an event occurrence or may be set to be opposite to the case where the sensing value exceeds or exceeds the threshold depending on the type and nature of the event sensing unit 130. [

Referring to FIG. 2, the conventional threshold has a fixed value, such as reference numeral 10, regardless of the vehicle speed. When the threshold value is set to a low value, an error may be recognized as an event even in a non-event situation. If the threshold value is set to a high value, the event may not be recognized as an event there was.

If the event is recognized as an event even in a non-event situation, unnecessary capacity is occupied for a storage medium having a finite storage capacity, and the lifetime of the storage medium is shortened by repeating nonsense read / write operations. In addition, when the vehicle is in a stop state or a runner state, a light vehicle contact accident or the like may be recognized as an event, but the measured value by the sensor may be low, so that the event may not be recognized. There is a limit to not storing data that can be important evidence for users.

Accordingly, in this embodiment, as shown in FIG. 3, the threshold value is adjusted to one of 20a, 20b, 20c, 20d, 20e, 20f, 20g, do. For example, if the vehicle is stationary, parked, or running at very low speeds, the threshold is set at a low value such as 20g or 20h so that even if the vehicle has a weak measurement due to light vehicle contact or light vehicle damage, Can be detected. In addition, when the vehicle is running at a high speed, the threshold value is set to a high value such as 20a or 20b, so that it is possible to prevent an ordinary event such as a vehicle swaying, a vertical motion, a left / right shock,

As such, the threshold value adjuster 120 may increase or decrease the threshold value as the vehicle speed increases. It is possible to increase / decrease the threshold value stepwise for every constant increase of the vehicle speed as shown in Fig. Or increase / decrease the threshold value in proportion to the increase of the vehicle speed or increase / decrease the threshold value in accordance with the increase of the vehicle speed.

The threshold value adjuster 120 may determine whether adjustment of a threshold value according to the currently received vehicle information is necessary based on a preset threshold value. When the threshold value needs to be adjusted, the threshold value is adjusted for the sensor so that event detection can be performed according to the new threshold value. If the adjustment of the threshold value is not necessary, event detection based on the predetermined threshold value is performed .

The event detection unit 130 detects whether an event has occurred according to the threshold value adjusted by the threshold value adjustment unit 120. It can be detected that an event has occurred when the vehicle is in a non-normal emergency condition. An event can be a running or stopping, a contact or damage done to a parked vehicle, a sudden break in a running vehicle, a rollover, a slip, a horizontal rotation, etc.

The event detection unit 130 generates a sensing signal based on the detection result and provides the sensing signal to the event information storage unit 140. The detection of such events is performed by various sensors such as a gyroscope sensor, an acceleration sensor, an angular velocity sensor, an impact sensor, and a vibration sensor provided in a vehicle.

The gyroscope sensor measures the orientation of the vehicle in the traveling direction so that it can check whether the vehicle has been rotated in the horizontal direction or the like. The acceleration sensor measures the change in the longitudinal acceleration or / and the lateral acceleration of the vehicle to determine whether the vehicle has undergone rapid braking, whether the vehicle has slipped, whether the vehicle has been rollover, whether the rotation has been made in the horizontal direction, The movement trajectory of the vehicle can be confirmed. The angular velocity sensor measures changes in the angular velocity of the vehicle, thereby determining whether the vehicle has been rolled or rotated in the horizontal direction. The impact sensor or the vibration sensor can detect a vehicle contact accident, a traffic accident, and a damage accident by detecting an impact amount or a vibration amount due to contact with the vehicle from outside or damage to the vehicle.

A threshold value for detecting an event may be set for each sensor, and the threshold value may be automatically variable depending on the vehicle information by the threshold value adjuster 120 described above.

The event information storage unit 140 stores event information about the event when it is detected by the event detection unit 130 that an event has occurred in the current vehicle. The stored event information can be used for checking whether the user is negligent or intentional according to the event, identifying the injured vehicle and the damaged vehicle, identifying the perpetrator, and identifying the cause of the accident.

The event information stored in the event information storage unit 140 may be vehicle information received through the vehicle information receiving unit 110, image information recorded inside and / or outside the vehicle, and the like.

The vehicle information may be self-diagnostic information such as OBD1, OBD2, KOBD information, GPS information, or sensor information. The self-diagnosis information, the GPS information, and the sensor information have been described in detail above, and a description thereof will be omitted here.

The image information includes an image or a recorded moving image photographed through a camera facing the inside and / or the outside of the vehicle with the event occurrence time before and after.

The configuration of the event information storage unit 140 for storing such image information is shown in FIG. 4 is a block diagram of an image recording apparatus as an event information storage unit according to an embodiment of the present invention.

The video recording apparatus as the event information storage unit 140 includes an image input unit 141, an encoding unit 142, and a storage unit 143. And may be connected to the display unit in some cases.

The image input unit 141 generates and outputs an image signal corresponding to the input external image. The image input unit 141 may include at least one of a lens, an image sensor, an image signal processor (ISP), and the like.

The encoding unit 142 encodes the image information corresponding to the image signal input from the image input unit 141 and stores the generated image data in the storage unit 143. [

The storage unit 143 is a space for permanently storing the image data processed by the encoding unit 142. Here, the persistent storage means that the corresponding image data is stored in the storage unit 143 when deletion according to the intention of the user, random deletion according to the cause of error occurring in the storage unit 143 does not occur, and the like. For example, the storage unit 143 may be implemented as a nonvolatile memory such as NAND FLASH, NOR FLASH, SD CARD, MMC CARD, and CF CARD.

And may be connected to the display unit as necessary, so that at least one of the operation state of the video recording apparatus, the power supply state, and the video data decoded by the decoding unit (not shown) may be output as visual information.

Some of these event storage devices 100 are in the form of software that can be executed in digital processing devices such as a vehicle black box system, a digital video recorder (DVR), a digital recording system (DRS) Can be implemented. In addition, each component constituting the event storage device 100 may be divided into two or more components to perform the same function or functions performed in two or more components may be performed in one component.

5 is a flowchart of an event storing method according to an embodiment of the present invention.

The vehicle information receiving unit 110 acquires current vehicle information including at least one of self-diagnosis information such as OBD1, OBD2, and KOBD information, GPS information, and sensor information (step S210).

The threshold adjuster 120 adjusts the threshold value according to the acquired vehicle information (step S220). The vehicle information on which the threshold value adjustment is based may be the vehicle speed. The vehicle speed can be extracted from the vehicle information or calculated by a predetermined algorithm or the like.

The threshold value adjuster 120 may increase or decrease the threshold value as the vehicle speed increases. The threshold value can be incremented / decremented step by step for every constant increment of the vehicle speed as shown in FIG. Or increase / decrease the threshold value in proportion to the increase of the vehicle speed or increase / decrease the threshold value in accordance with the increase of the vehicle speed.

The threshold to be adjusted is a reference value in detecting the occurrence of an event in the event detection unit 130. [ A case where the sensing value exceeds or exceeds the threshold value according to the type and nature of the event sensing unit 130 may be set to detect occurrence of an event or vice versa.

Prior to step S220, the threshold adjusting unit 120 may determine whether threshold adjustment according to the acquired vehicle information is necessary. If it is determined that the threshold value adjustment is necessary, the process proceeds to step S220 where the threshold value can be adjusted. If it is determined that the threshold value adjustment is not necessary, the event storage device 100 can perform event detection with a predetermined threshold value have.

When the threshold value is adjusted in step S220 while the event detection unit 130 detects the occurrence of an event with a predetermined threshold value, the event detection unit 130 detects the occurrence of an event based on the adjusted threshold value.

FIG. 5 shows an embodiment in which an event is detected when the currently sensed sensing value is greater than or equal to a threshold value (step S230). However, it is also possible to detect that an event has occurred when the currently sensed sensing value is less than or equal to the threshold value according to the embodiment.

If it is detected that an event has occurred, the event information is stored (step S240). The storage of the event information may include storing the vehicle information received before and / or after a predetermined time based on the event occurrence time, or recording related images inside and / or outside the vehicle.

It will be appreciated that the above-described event storage method may be performed by an automated procedure in a time-series sequence by means of a software program or the like embedded in the event storage device. The codes and code segments that make up the program can be easily deduced by a computer programmer in the field. In addition, the program is stored in a computer readable medium, readable and executed by a computer, thereby implementing the method. The information storage medium includes a magnetic recording medium, an optical recording medium, and a carrier wave medium.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It will be understood that the invention may be varied and varied without departing from the scope of the invention.

1 is a schematic block diagram of an event storage device according to an embodiment of the present invention;

FIG. 2 is a graph of a threshold value fixed regardless of the conventional vehicle information. FIG.

3 is a graph of a threshold that can be variably set according to vehicle information according to an embodiment of the present invention.

4 is a block diagram of an image recording apparatus as an event information storage unit according to an embodiment of the present invention.

5 is a flowchart of an event storing method according to an embodiment of the present invention;

Claims (16)

An apparatus for storing an event occurring in a vehicle, the apparatus comprising: A vehicle information receiving unit for receiving vehicle information about the vehicle; A threshold value adjuster that variably adjusts a threshold value in accordance with the vehicle speed acquired from the vehicle information, based on the received vehicle information; An event detection unit for detecting the occurrence of the event based on the adjusted threshold value; And And an event information storage unit for storing event information corresponding to the event when it is detected that an event has occurred. delete The method according to claim 1, Wherein the event detection unit is one of a gyroscope sensor, an acceleration sensor, an angular velocity sensor, an impact sensor, a vibration sensor, and a combination thereof. The method according to claim 1, Wherein the event information includes image information of at least one of inside and outside of the vehicle. 5. The method of claim 4, The event information storage unit stores, An image input unit for receiving image data photographed for at least one of inside and outside of the vehicle; An encoding unit encoding the image data; And a storage unit for permanently storing the encoded image data. The method according to claim 1, Wherein the vehicle information is any one of GPS information, self-diagnosis information, sensor information, and combinations thereof. The method according to claim 6, Wherein the threshold adjustment unit obtains the vehicle speed of the vehicle from at least one of the GPS information, the self-diagnosis information, and the sensor information. The method according to claim 1, Wherein the threshold adjusting unit determines whether or not the threshold value needs to be adjusted based on the vehicle information, and adjusts the threshold value when it is determined that the threshold value should be adjusted. A method for storing an event in a vehicle, the method comprising: (a) receiving vehicle information for the vehicle; (b) variably adjusting a threshold value in accordance with the vehicle speed acquired from the vehicle information, based on the received vehicle information; (c) detecting the occurrence of the event based on the adjusted threshold value; And (d) storing event information corresponding to the event when it is detected that the event has occurred. delete 10. The method of claim 9, Wherein the event information includes image information of at least one of the inside and the outside of the vehicle. 12. The method of claim 11, wherein step (d) (d-1) receiving photographed image data for at least one of the inside and the outside of the vehicle; (d-2) encoding the image data; And and (d-3) permanently storing the encoded image data. 10. The method of claim 9, Wherein the vehicle information is one of GPS information, self-diagnosis information, sensor information, and combinations thereof. 14. The method of claim 13, wherein before step (b) (b-1) acquiring the vehicle speed of the vehicle from at least one of the GPS information, the self-diagnosis information, and the sensor information. 10. The method of claim 9, wherein step (b) (b-1) determining whether adjustment of the threshold value is necessary based on the vehicle information; And (b-2) adjusting the threshold value when it is determined that the adjustment of the threshold value is necessary. A program for tangibly embodying a program of instructions executable by a digital processing apparatus to perform the event storage method according to any one of claims 9, 11, 15, Is recorded.

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