KR20180043587A - Emergency call system - Google Patents

Abstract

The present invention relates to an emergency call system for providing accident information to the outside when an accident of a vehicle equipped with the system occurs. The emergency call system includes a camera for photographing the outside of the vehicle; an accident occurrence determination part for determining whether or not an accident has occurred by comparing the image of a current region photographed by the camera with the image of a region of interest extracted from a previous image and outputting an accident occurrence signal when it is determined that the accident has occurred; and an E-Call module for receiving the accident occurrence signal outputted from the accident occurrence determination part and providing accident information to external equipment.

Description

[0001] Emergency call system [0002]

The present invention relates to an emergency call system, and more particularly, to an emergency call system that can operate in various types of accidents in which an airbag is not deployed by determining whether an operation is performed based on signals input through various paths To an emergency call system.

e-Call System is an abbreviation of Emergency Call System. It sends out vehicle location, vehicle speed, vehicle direction and vehicle information to nearby PSAP (Public Safety Answering Point) .

Since 2015, the OEMs are investing heavily in the development of e-call systems while promoting legalization in Europe and Russia.

The e-Call system consists of three major functional components: IVS (In-Vehicle System), MNO (Mobile Network Operator), and PSAP for receiving and processing information. .

On the other hand, the operation of e-Call System is determined by the signal sent from ACU (Airbag Control Unit).

When an accident occurs, the impact sensor senses the amount of impact and sends it to the ACU. The ACU determines whether the airbag deployment is based on the value from the impact sensor, and determines whether or not the airbag deployment is used as an operating basis for the e-call system do.

When an accident occurs, the e-Call System transmits accident information data to the accident reception center, and if an audio channel is formed between the accidenter and the center operator, the accident situation is judged.

Since the operation of the e-Call System is performed based on the amount of impact detected by the impact sensor, the operation state of the ACU operating with the input of the amount of impact is a main factor .

However, in actuality, even if a vehicle accident occurs, the air bag is not deployed in many cases because the values determined by the ACU are limited to the values detected by the front impact sensor and the side impact sensor. That is, the airbag may not operate if an accident such as rear impact, slope collision, rollover, and cloud occurs.

In addition, the air bag can not be actuated even when the amount of impact detected by the impact sensor is insufficient, or when the collision angle is inconsistent. In the event of a vehicle accident due to rollover or rolling, .

In this way, even if a vehicle accident occurs, the e-Call System may not operate, so that an effective e-Call System can not be operated.

Therefore, there are limitations in determining the operation of the e-Call System based only on the operation of the ACU, so consideration should be given to setting various criteria for determining the operation of the e-Call System.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide an air conditioner, The present invention also provides an emergency call system that can operate even in the event of an accident.

According to another aspect of the present invention, there is provided an emergency call system for providing accident information to an external device in the event of an accident of a mounted vehicle, the emergency call system comprising: Camera; An accident occurrence judging unit for judging whether or not an accident has occurred by comparing an image of a current region photographed by the camera with an image of a region of interest extracted from a previous image and outputting an accident occurrence signal when it is judged that an accident has occurred; And an E-Call module for receiving an accident occurrence signal output from the accident occurrence determination unit and providing accident information to external equipment.

Further comprising a speed sensor for measuring a speed of the vehicle mounted on the vehicle, wherein the accident occurrence determination unit compares the speed measured by the speed sensor with a preset reference speed, , It is configured to output an accident occurrence signal.

Wherein the accident occurrence determination unit determines the current mode if the speed measured by the speed sensor is less than the reference speed and outputs the occurrence signal when the mode is the automatic mode, And output an accident occurrence signal.

Wherein the incident occurrence judging unit comprises: a receiving unit for receiving an image photographed by the camera; An image processing unit for extracting an image of a region of interest from the image received by the receiving unit, dividing the extracted image into a plurality of pixels and providing an image in units of pixels; And an analyzing unit for receiving an image of a pixel unit provided from the image processing unit and determining whether an accident has occurred based on a result of comparing pixel values of the same coordinates of the current image with the previous image.

Wherein the incident occurrence judging unit further comprises an illuminance sensor and the image processing unit judges based on an external illumination value sensed by the illuminance sensor that it is night, And then extracts the image of the region of interest from the color-inverted image.

If the difference between the pixel value of the previous image and the pixel value of the current image is within the error range, the analyzing unit determines that the pixel value of the previous image is the same as the pixel value of the current image, And judges that the resultant image is the same image if the result matching rate is equal to or greater than a preset reference.

Wherein the analyzing unit compares a region of the upper end of the current image with a region of the upper end of the previous image and a region of the lower end of the previous image, And the area of the lower end of the upper end portion of the wafer W is compared.

The analyzing unit determines that the area of the upper end of the current image is different from the area of the upper end of the previous image and the area of the lower end of the current image is the same as the area of the upper end of the previous image, It is determined that an accident has occurred, and in the other cases, it is determined that an accident has not occurred.

The emergency call system according to the embodiment of the present invention can detect the occurrence of an accident even if an accident is detected by using an image of the outside of the vehicle obtained through a camera and a vehicle speed measured by the speed sensor, Can be determined.

Accordingly, it is possible to determine whether an accident occurs in various types of accidents in which the airbag is not deployed, by judging the presence or absence of an operation based on signals inputted through various paths.

Therefore, it is possible to promptly cope with an accident that has not been able to determine the occurrence of an accident, so that the safety of an occupant in an accident can be improved.

1 is a diagram showing an exemplary configuration of an emergency call system according to an embodiment of the present invention.
2 is a diagram showing the configuration of an accident occurrence judging unit of the emergency call system according to the embodiment of the present invention.
Fig. 3 shows two images having a predetermined time interval when no accident occurs. Fig. 3 (a) is a current image, and Fig. 3 (b) is a previous image.
Fig. 4 shows two images having a predetermined time interval when an accident occurs. Fig. 4 (a) is a current image, and Fig. 4 (b) is a previous image.
FIG. 5 is a flowchart illustrating a procedure according to a first operation of the emergency call system according to the embodiment of the present invention. FIG.
FIG. 6 is a flow chart showing a procedure according to a second operation of the emergency call system according to the embodiment of the present invention.

For the embodiments of the invention disclosed in the tent, certain structural and functional descriptions are merely illustrative for the purpose of illustrating embodiments of the invention, and the embodiments of the invention may be embodied in various forms, And should not be construed as limited to the embodiments described.

The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It should be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

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. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between. Other expressions that describe the relationship between components, such as "between" and "between" or "neighboring to" and "directly adjacent to" should be interpreted as well.

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 " comprising ", or " having ", and the like, are intended to specify the presence of stated features, integers, But do not preclude the presence or addition of steps, operations, elements, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

On the other hand, if an embodiment is otherwise feasible, the functions or operations specified in a particular block may occur differently from the order specified in the flowchart. For example, two consecutive blocks may actually be performed at substantially the same time, and depending on the associated function or operation, the blocks may be performed backwards.

Hereinafter, the construction and operation of the emergency call system according to the embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram showing an exemplary configuration of an emergency call system according to an embodiment of the present invention.

1, an emergency call system 100 according to an exemplary embodiment of the present invention includes an impact detection sensor 110, an airbag control unit 120, a camera 130, An incident occurrence judging unit 150, and an E-Call module 160. [0034] FIG.

At this time, the system 100 determines accident information through the E-Call module 160 according to the determination result of the airbag initiation of the airbag control unit 120 based on the impact information sensed by the impact sensing sensor 110 To the equipment (eg, nearby vehicles, PSAP, etc.).

The system 100 further includes an E-Call module 160 (not shown) according to the determination result of the accident occurrence determination unit 150 based on the image information obtained from the camera 130 and the speed information obtained from the speed sensor 140 ) To the external equipment (ex. Peripheral vehicle, PSAP).

In detail, the impact sensor 110 detects an impact applied to the vehicle body when a vehicle accident occurs, and outputs an impact amount. The amount of impact output by the impact sensor 110 is input to the airbag control unit 120.

The airbag controller 120 determines whether the airbag is started based on the amount of impact from the impact sensor 110. If the airbag controller 120 determines that the airbag should be started, / RTI >

For example, the airbag control unit 120 compares the amount of impact from the impact sensor 110 with a predetermined reference amount of impact, determines that the airbag should be started if it is greater than the reference amount of impact, It can be judged that it is not necessary.

Of course, the above-described determination of whether or not the airbag initiation of the airbag control section 120 is an example is possible, and the airbag control section 120 can judge whether or not the airbag is started by other methods.

The camera 130 photographs the outside of the vehicle on which the system 100 is mounted, for example, the front of the vehicle or the rear of the vehicle, and provides the photographed image to the accident occurrence determining unit 150.

For example, the camera may be a front camera installed to photograph the front of the vehicle, or a rear camera installed to photograph the rear of the vehicle.

The speed sensor 140 measures the speed of the vehicle on which the system 100 is mounted, and provides the measured speed to the accident occurrence determination unit 150.

The accident occurrence judging unit 150 receives the image from the camera 130 and the speed from the speed sensor 140 to judge whether or not an accident has occurred. If it is judged that an accident has occurred, Provide an incident signal.

The incident occurrence determination unit 150 may be configured to determine whether an accident has occurred based on the image from the camera 130. The incident occurrence determination unit 150 may determine the occurrence of an accident based on the image from the camera 130 and the speed from the speed sensor 140 To determine whether or not an accident has occurred.

When the camera 130 detects the occurrence of an accident, it is advantageous in that it takes a short time to determine the occurrence of an accident. In addition, by using the image from the camera 130 and the speed from the speed sensor 140, There is an advantage that the judgment accuracy can be improved when it is judged whether or not it occurs.

The detailed configuration and function of the accident occurrence determination unit 150 will be described later with reference to the accompanying drawings.

When the E-Call module 160 receives an airbag start signal from the airbag control unit 120 or receives an accident occurrence signal from the accident occurrence determination unit 150, , PSAP, etc.).

For example, the E-Call module 160 may transmit incident information using wireless communication such as 3G / 4G.

The method of transmitting the accident information to the external equipment by the E-Call module 160 is not limited to any particular method and can be implemented by applying a known accident information transmission method, A detailed description thereof will be omitted.

The overall configuration and functions of the emergency call system according to the embodiment of the present invention have been described above. Hereinafter, an accident occurrence determination unit of the emergency call system according to an embodiment of the present invention will be described in detail.

2 is a diagram showing the configuration of an accident occurrence judging unit of the emergency call system according to the embodiment of the present invention.

Referring to FIG. 2, the accident occurrence determination unit 200 of the emergency call system according to the embodiment of the present invention can be applied to the accident occurrence determination unit 150 of FIG. 1, Based on the speed from the speed sensor 140, it is determined whether an accident has occurred. If it is determined that an accident has occurred, the E-Call module 160 provides an accident occurrence signal.

The incident occurrence determination unit 150 may include a reception unit 210, an image processing unit 220, and an analysis unit 230.

The receiving unit 210 receives the image transmitted from the camera 130 and the speed transmitted from the speed sensor 140 and provides the received image to the image processing unit 220. The received speed is transmitted to the analysis unit 230, .

The manner in which the receiving unit 210 is connected to the camera 130 and the method in which the receiving unit 210 is connected to the speed sensor 140 can be variously set. Accordingly, the receiving unit 210 has a proper communication module for communication.

The image processing unit 220 receives an image provided from the receiving unit 210, extracts an image of a region of interest (ROI) previously set for determining an occurrence of an accident, and outputs the extracted image to a plurality of pixels and provides an image in units of pixels to the analysis unit 230. [

At this time, since the image processor 220 must be able to grasp the pattern of the image through the pixels classified by the image processor 220, if the image processor 220 divides the image into pixels so as to grasp the pattern of the image, The extracted image can be divided into 10,000 pixels.

Also, a plurality of regions of interest may be set in one image, and may be regions located at the upper and lower ends of the image.

Although it is possible to increase the accuracy of the accident judgment, the time required for the accident determination is long and the burden of using an expensive high-specification image processing device is required to shorten the time required. It is desirable that the number and position of the regions to be set are appropriately adjusted by those skilled in the art.

The image processing unit 220 provides the image of the pixel unit to the analyzing unit 230 and performs the same processing on the image input at a predetermined time interval (eg 0.03 second) and provides the analyzed image to the analyzing unit 230 do.

The time interval of the image input to the image processing unit 220 can be variously set. When the vehicle is traveling at a speed of 100 km / h, the vehicle is moved 1 m for 0.03 second, Is 0.03 seconds as an example in the present embodiment.

Meanwhile, the image processing unit 220 can process images differently according to external illuminance (day / night) in the event of an accident.

That is, unlike the daytime, the illuminance at night is low, and the pixel distribution of the image at the upper end of the image is very similar to the pixel distribution of the image at the lower end of the image.

Accordingly, the image processing unit 220 processes the image as mentioned above during the daytime, but applies the color inversion technique to the image at night, and applies the color inversion technique to the image of the region of interest (ROI) Extracts the extracted image, and divides the extracted image into a plurality of pixels.

For this, the incident occurrence determination unit 200 may further include an illuminance sensor 240 for measuring an external illuminance.

In this case, the image processing unit 220 is provided with illuminance values for distinguishing between day and night, and the illuminance values can be variously set.

In other words, if the image processing unit 220 is configured to process an image without distinguishing between day and night, the image processing unit 220 receives the image provided from the receiving unit 210 and extracts a region of interest (ROI) Extracts the image, and divides the extracted image into a plurality of pixels.

On the other hand, if the image processing unit 220 is configured to process images by distinguishing day and night, it is determined whether it is night or night based on the illuminance value provided from the illuminance sensor 240.

If it is determined to be low, the image processing unit 220 receives the image provided from the receiving unit 210, extracts an image of a region of interest (ROI) in the image, and outputs the extracted image to a plurality of pixels (pixels).

On the other hand, if it is determined to be the night, the image processing unit 220 applies a color inversion technique to the image provided from the receiving unit 210, extracts an image of a region of interest (ROI) in the color- The extracted image is divided into a plurality of pixels.

The analysis unit 230 analyzes an image of a pixel unit provided from the image processing unit 220 to determine whether an accident has occurred. If it is determined that an accident has occurred, the analysis unit 230 transmits an accident occurrence signal to the E-Call module 160 .

At this time, the analyzer 230 compares pixel values of the same coordinates of the previously received image (In-1) with the currently received image (In). Here, the pixel value to be compared is an RGB value.

If the difference between the pixel value of the previously received image In-1 and the pixel value of the currently received image In is within the tolerance range (e.g., ± 10%), the analyzer 230 analyzes the received image (In-1) and the pixel value of the currently received image In are the same.

The analysis unit 230 determines that the received image is the same image if the matching rate is equal to or greater than a preset reference (eg, 80%) by matching the pixels of the same coordinates between the previously received image and the currently received image.

Particularly, the analysis unit 230 compares the upper region A of the current image In with the upper region A of the previous image In-1 and the lower region B, The area B at the lower end of the first image In is compared with the area A at the upper end of the previous image In-1 and the area B at the lower end.

At this time, the analysis unit 230 determines that the upper region In_A of the current image is different from the upper region In-1_A of the previous image (In_A? In-1_A) and the lower region of the previous image In- (In_B = In-1_A), and the area (In_B = In-1_B) of the lower end of the current image is the same as the area (In_1_A) -1_B) and another (In_B? In-1_B), it is determined that an accident has occurred, and otherwise, it is determined that no accident has occurred.

Fig. 3 shows two images having a predetermined time interval when no accident occurs. Fig. 3 (a) is a current image and Fig. 3 (b) is a previous image.

3 is analyzed by the analyzing unit 230, the analyzing unit 230 determines that the upper region In_A of the current image is equal to the upper region In-1_A of the previous image (In_A = In- 1_A of the current image is different from the area In-1_B of the lower end of the previous image (In_A? In-1_B), the area In_B of the lower end of the current image is different from the area In- In-1_A) is the same as the area (In-1_B) at the lower end of the previous image (In_B = In-1_B).

On the other hand, FIG. 4 shows two images having a predetermined time interval when an accident occurs. FIG. 4A shows the current image and FIG. 4B shows the previous image.

4 is analyzed by the analysis unit 230, the analysis unit 230 determines that the upper region In_A of the current image is different from the upper region In-1_A of the previous image (In_A? In- (In_B) of the lower portion of the current image is the same as the upper region (In-1_A) of the previous image (In_B = In_B) = In-1_A) is different from the area (In-1_B) in the lower end of the previous image (In_B? In-1_B).

Meanwhile, the analyzer 230 can determine whether or not an accident has occurred based on only the image, but can also determine whether an accident has occurred by considering the speed of the vehicle in addition to the image.

In this case, it is assumed that the driver can directly operate the e-call in the case of a low speed (for example, less than 30 km) in consideration of the speed of the vehicle when the occurrence of an accident is determined. It is determined that an accident has occurred through the analysis based on the current speed, and an accident occurrence signal is provided to the E-Call module 160 when the current speed is equal to or higher than the predetermined reference speed.

In addition, when the analysis unit 230 continuously judges occurrence of the overturning accident through the image analysis, the analysis unit 230 determines that it is not an overturning accident on the road but an overturning accident on a cliffside, and provides it to the E-Call module 160 can do.

The configuration and function of the emergency call system according to the embodiment of the present invention have been described in detail above. Hereinafter, the operation of the emergency call system according to the embodiment of the present invention will be described in more detail.

FIG. 5 is a flowchart illustrating a procedure according to a first operation of the emergency call system according to the embodiment of the present invention. FIG.

The operation shown in FIG. 5 may be performed by the emergency call system 100 described with reference to FIGS. 1-4, wherein the operation of the system 100 in response to an impact sensed by the impact sensing sensor 110 A detailed description thereof will be omitted and the operation of the system 100 based on the image acquired by the camera 130 will be mainly described.

First, the camera 130 photographs the outside of the vehicle (S500), and provides the photographed image to the accident occurrence judging unit 150. [ At this time, the camera 130 can photograph the rear of the vehicle and photograph the front of the vehicle.

Then, the incident occurrence determination unit 150 extracts an image of a region of interest set in the image provided from the camera 130 (S510), and divides the extracted image into a plurality of pixels (S520).

At this time, in the step S510, the predetermined region of interest is two and may be the top and bottom of the image.

Meanwhile, in step S510, the incident occurrence determination unit 150 determines whether it is night or night based on the external illuminance measured by the illuminance sensor 240 before extracting the image of the area of interest, , A color inversion technique may be applied to an image, and then an image of a region of interest may be extracted from the color-inverted image.

Thereafter, the incident occurrence determination unit 150 compares the pixel values of the same coordinates of the current image and the previous image (S530), and determines whether an accident has occurred (S540).

In step S530, the incident occurrence determination unit 150 compares the upper end area of the current image with the upper end area of the previous image and the lower end area, and determines the lower end area of the current image as the upper end area of the previous image Compare the area at the bottom.

In step S540, the incident occurrence determination unit 150 determines that the upper end of the current image is different from the upper end of the previous image and is the same as the lower end of the previous image, It is judged that an accident has occurred if it is the same as the area of the upper end and is different from the area of the lower end of the previous image, and otherwise, it is judged that no accident has occurred.

If the difference between the pixel value of the previous image and the pixel value of the current image is within the error range, the occurrence determination unit 150 determines that the pixel value of the previous image is the same as the pixel value of the current image do.

In step S540, the incident occurrence determination unit 150 determines that the current image is the same image if the matching rate of pixels matching the same coordinates of the previous image and the current image is greater than a predetermined reference.

If it is determined in step S540 that an accident has occurred (YES in step S540), the occurrence determination unit 150 transmits an incident occurrence signal to the E-Call module 160, (E.g., near vehicle, PSAP, etc.) (S550).

On the other hand, if it is determined in step S540 that an accident has not occurred (S540: NO), the accident occurrence determination unit 150 is fed back to step S510.

FIG. 6 is a flow chart showing a procedure according to a second operation of the emergency call system according to the embodiment of the present invention.

The operation shown in Fig. 6 can be performed by the emergency call system 100 shown in Figs. 1 to 4, in which the operation in Fig. 4 is based on an image obtained by the camera 130 In addition to the image obtained by the camera 130, the speed of the vehicle measured by the speed sensor 140 is also used.

Referring to FIG. 6, the camera 130 photographs the outside of the vehicle (S500), and the speed sensor 140 measures the speed of the vehicle (S510). At this time, the camera 130 can photograph the rear of the vehicle and photograph the front of the vehicle.

Then, the incident occurrence determination unit 150 extracts an image of a region of interest set in the image provided from the camera 130 (S610), and divides the extracted image into a plurality of pixels (S620). In step S610, the two regions of interest that have been set are the upper and lower ends of the image.

On the other hand, in step S610, the accident occurrence determining unit 150 determines whether it is night or night based on the external illuminance measured by the illuminance sensor 240 before extracting the image of the ROI, , A color inversion technique may be applied to an image, and then an image of a region of interest may be extracted from the color-inverted image.

Thereafter, the incident occurrence determining unit 150 compares pixel values of the same coordinates of the current image and the previous image (S630), and determines whether an accident has occurred (S640).

In step S630, the incident occurrence determination unit 150 compares the upper end region of the current image with the upper end region of the previous image and the lower end region, and determines the lower end region of the current image as the upper end region of the previous image Compare the area at the bottom.

In step S640, the incident occurrence determination unit 150 determines that the current upper end area of the image is different from the upper end area of the previous image and is the same as the lower end area of the previous image, It is judged that an accident has occurred if it is the same as the area of the upper end and is different from the area of the lower end of the previous image, and otherwise, it is judged that no accident has occurred.

If the difference between the pixel value of the previous image and the pixel value of the current image is within the error range, the incident occurrence determination unit 150 determines that the pixel value of the previous image is the same as the pixel value of the current image in step S640 do.

In step S640, the incident occurrence determination unit 150 determines that the image is the same if the matching rate of the pixels of the same coordinates of the previous image and the current image is greater than a preset reference.

If it is determined in step S640 that no accident has occurred (NO in step S640), the occurrence determination unit 150 feeds back the information to step S610.

On the other hand, if it is determined in step S640 that an accident has occurred (YES in step S540), the occurrence determination unit 150 compares the speed measured in step S600 with a preset reference speed (step S650) It is determined whether the speed is equal to or higher than the reference speed (S660).

If it is determined in step S660 that the measured speed is equal to or higher than the reference speed (YES in step S660), the occurrence determination unit 150 transmits an accident occurrence signal to the E-Call module 160, 160 provides accident information to the outside (ex. Peripheral vehicle, PSAP, etc.) (S670).

If it is determined in step S660 that the measured speed is less than the reference speed (NO in step S660), the occurrence determination unit 150 determines whether the current mode is the automatic mode in step S680.

If it is determined in step S680 that the current mode is the automatic mode, the occurrence determination unit 150 transmits an incident occurrence signal to the E-Call module 160, and the E-Call module 160 And provides the information to the outside (ex. Peripheral vehicle, PSAP, etc.) (S670).

On the other hand, if it is determined in step S680 that the current mode is not the automatic mode, that is, if the current mode is the manual mode, the accident occurrence determining unit 150 determines whether an accident information providing command is input from the outside S690).

If it is determined in step S690 that an accident information providing instruction from the outside is input (S690-YES), the accident occurrence determining unit 150 transmits an accident occurrence signal to the E-Call module 160, The call module 160 provides incident information to the outside (ex. Peripheral vehicle, PSAP, etc.) (S670).

On the other hand, if it is determined in the step S690 that no accident information providing instruction from the outside is input (S690-No), the occurrence determination unit 150 ends the operation.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the scope of the invention is not limited to the disclosed exemplary embodiments, And various alternatives, modifications, and alterations can be made within the scope.

Therefore, the embodiments described in the present invention and the accompanying drawings are intended to illustrate rather than limit the technical spirit of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments and accompanying drawings . The scope of protection of the present invention should be construed according to the claims, and all technical ideas within the scope of equivalents should be interpreted as being included in the scope of the present invention.

100: Emergency call system
110: Shock sensor
120: air bag control unit
130: camera
140: Speed sensor
150, 200: an accident occurrence judging unit
160: E-Call module
210:
220:
230:
240: illuminance sensor

Claims (8)

1. An emergency call system for providing accident information to an outside when an accident of a mounted vehicle occurs,
A camera for photographing the exterior of the mounted vehicle;
An accident occurrence judging unit for judging whether or not an accident has occurred by comparing an image of a current region photographed by the camera with an image of a region of interest extracted from a previous image and outputting an accident occurrence signal when it is judged that an accident has occurred; And
And an E-Call module for receiving an accident occurrence signal output from the accident occurrence determination unit and providing accident information to external equipment
Emergency call system. The method according to claim 1,
Further comprising a speed sensor for measuring the speed of the mounted vehicle,
The accident occurrence judging unit compares the speed measured by the speed sensor with a predetermined reference speed and outputs an accident occurrence signal if the estimated speed is equal to or higher than the reference speed
Emergency call system. 3. The method of claim 2,
Wherein the accident occurrence judging unit judges the current mode if the speed measured by the speed sensor is less than the reference speed and outputs the accident occurrence signal if it is in the automatic mode, Being configured to output an incident signal
Emergency call system. The method according to claim 1,
Wherein,
A receiving unit for receiving an image captured by the camera;
An image processing unit for extracting an image of a region of interest from the image received by the receiving unit, dividing the extracted image into a plurality of pixels and providing an image in units of pixels; And
And an analyzing unit that receives an image in units of pixels provided from the image processing unit and determines whether an accident has occurred based on a result of comparing pixel values of the same coordinates of the current image with the previous image
Emergency call system. 5. The method of claim 4,
The accident occurrence determining unit may further include an illuminance sensor,
Wherein the image processing unit applies a color inversion technique to the image received by the receiving unit when determining that the image is night based on an external illuminance value sensed by the illuminance sensor, .
Emergency call system. 5. The method of claim 4,
If the difference between the pixel value of the previous image and the pixel value of the current image is within the error range, the analyzing unit determines that the pixel value of the previous image is the same as the pixel value of the current image, If the result matching rate is equal to or greater than a preset reference, it is determined that the image is the same image
Emergency call system. 5. The method of claim 4,
Wherein the region of interest is a region of an upper end portion of an image and a lower end portion of the image,
The analyzing unit compares the upper end region of the current image with the upper end region and the lower end region of the previous image and compares the lower end region of the current image with the upper end region and the lower end region of the previous image
Emergency call system. 8. The method of claim 7,
The analyzing unit determines that the area of the upper end of the current image is different from the area of the upper end of the previous image and the area of the lower end of the current image is the same as the area of the upper end of the previous image, If it is different from the area, it is judged that an accident has occurred. Otherwise, it is judged that the accident does not occur
Emergency call system.

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