KR20220063021A - Apparatus for processing danger notice, control method thereof - Google Patents

Abstract

The present invention relates to a danger warning processing device and a control method thereof. The control method of a warning processing server that transmits a warning signal by communicating with a driver state monitoring (DSM) vehicle terminal that transmits a DSM event signal according to the present invention comprises: a step of receiving vehicle driving information from the DSM vehicle terminal; a step of determining whether the DSM event signal is erroneous by referring to the received vehicle driving information when the DSM event signal is received from the DSM vehicle terminal; and a step of not transmitting a warning signal when there is an error in the DSM event signal as a result of the determination, and transmitting a warning signal when there is no error in the DSM event signal as a result of the determination. Accordingly, the occurrence of indiscriminate warning notifications can be minimized.

Description

Apparatus for handling danger warning and control method thereof

The present invention relates to an apparatus for processing a danger warning and a control method thereof, and more particularly, to a server and a control method thereof for communicating with a vehicle terminal and processing a warning about a dangerous situation while communicating with a vehicle terminal, and to a corresponding vehicle terminal and control method .

Various types of vehicle accidents are occurring on the road, and there are far more cases that occur due to driver's negligence, etc. rather than due to defects in the vehicle itself.

Accidents occur, for example, because drivers are drowsy or, in particular, not properly looking ahead.

As such, a driver state monitoring (DSM) system, that is, a driver monitoring system, has been proposed to prevent drivers' carelessness while driving.

This conventional DSM system takes a picture of the driver's face through a camera in the vehicle, and then warns the driver or a third party by judging the time the driver is turning his head or looking to the other side without properly looking ahead. is a system that does

However, in the case of the conventional DSM system, since it relies on images captured by the driver, various cases occurring while driving are not taken into account, and indiscriminate warnings are generated, causing inconvenience to users.

Patent Publication No. 10-2016-0067694

The present invention has been devised to solve the above-mentioned disadvantages of the prior art, and its object is to provide an apparatus and a control method thereof for preventing generation of a warning by division through a verification process for an event signal of a conventional DSM system will do

In order to achieve the above object, the warning processing server communicating with a DSM vehicle terminal that transmits a DSM (Driver State Monitoring) event signal according to the present invention to transmit a warning signal is a receiver configured to receive vehicle driving information from the DSM vehicle terminal. Wow; an event error determining unit that, when the DSM event signal is received, determines whether the corresponding DSM event signal is in error by referring to the vehicle operation information received from the receiving unit; A warning signal for sending out a warning signal when there is no error in the DSM event signal as a result of the event error determining unit determining that there is an error in the DSM event signal. It consists of a transmitter.

In addition, in order to achieve the above object, the DSM vehicle terminal for detecting a DSM (Driver State Monitoring) event signal according to the present invention includes: a vehicle operation information generator configured to generate vehicle operation information; an event error determining unit that, when the DSM event signal is detected, determines whether the corresponding DSM event signal is in error by referring to the vehicle operation information generated by the vehicle operation information generation unit; If there is an error in the DSM event signal as a result of the event error determination unit, a warning signal is not transmitted, and when there is no error in the DSM event signal as a result of the event error determination unit determination, the transmission of a warning signal is controlled. It is configured to include a control unit.

In addition, in order to achieve the above object, according to the present invention, there is provided a control method of a warning processing server that transmits a warning signal by communicating with a DSM vehicle terminal that transmits a DSM (Driver State Monitoring) event signal, driving the vehicle from the DSM vehicle terminal. receiving information; when the DSM event signal is received from the DSM vehicle terminal, determining whether the corresponding DSM event signal is in error by referring to the received vehicle driving information; and not transmitting a warning signal when there is an error in the DSM event signal as a result of the determination, and transmitting a warning signal when there is no error in the DSM event signal as a result of the determination.

In addition, in order to achieve the above object, according to the present invention, there is provided a control method of a DSM vehicle terminal for detecting a DSM (Driver State Monitoring) event signal, the method comprising: generating vehicle operation information; when the DSM event signal is detected, determining whether the corresponding DSM event signal is in error by referring to the generated vehicle driving information; and not transmitting a warning signal when there is an error in the DSM event signal as a result of the determination, and transmitting a warning signal when there is no error in the DSM event signal as a result of the determination.

As described above, according to the present invention, it is possible to minimize the occurrence of indiscriminate warning notifications by verifying whether or not there is an error on the conventional DSM event signal.

In particular, it is possible to increase the accuracy of the DSM event signal by activating information on possible rotational directions such as left and right turns in a specific lane among road information.

In addition, in delivering a warning due to driver's negligence, damage to other drivers due to frequent warning notifications can be minimized by selectively selecting the transmission target rather than indiscriminately transmitting the warning to nearby vehicles.

1 is a schematic configuration diagram of an entire system including an alert processing server according to an embodiment of the present invention;
2 is a functional block diagram of the alert processing server of FIG. 1;
3 is an example of a table for error determination for a DSM event signal,
4 is an example of a table used to confirm an event level through event analysis,
5 is an overall control flow diagram of an alert processing server according to an embodiment of the present invention.

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

Hereinafter, each embodiment according to the present invention is merely an example for helping the understanding of the present invention, and the present invention is not limited to these embodiments. In particular, the present invention may be composed of a combination of at least any one of individual components, individual functions, or individual steps included in each embodiment.

In particular, some claims of the claims include an alphabet such as '(a)' for convenience, but the alphabet does not define the order of each step.

In addition, each signal referred to in each embodiment according to the present invention below may mean one signal transmitted by one connection, etc., but may also mean a series of signal groups transmitted for the purpose of performing a specific function to be described later. . That is, in each embodiment, a plurality of signals transmitted at a predetermined time interval or after receiving a response signal from a counterpart device may be expressed as one signal name for convenience.

A schematic configuration of the entire system including the alert processing server 100 according to an embodiment of the present invention is shown in FIG. 1 .

As shown in FIG. 1 , the entire system may include a DSM vehicle terminal 210 , a warning processing server 100 , and a warning target vehicle 300 terminal.

Here, the DSM vehicle terminal 210 is installed inside the vehicle and performs a function of monitoring the driver's condition. For example, the DSM vehicle terminal 210 captures the driver through a pre-equipped camera (not shown), and displays the captured image. It analyzes and performs the function of determining whether the driver is in a state of negligence.

When it is determined that the driver's careless state is determined as a result of the determination, the DSM vehicle terminal 210 generates a DSM event signal and transmits the generated DSM event signal to the warning processing server 100 .

As such, the technology for transmitting the DSM event signal by determining the driver's negligence state itself corresponds to a well-known technology, and thus a more detailed description thereof will be omitted.

In the present embodiment, the DSM vehicle terminal 210 may transmit not only the DSM event signal but also additional vehicle driving information to the warning processing server 100 .

Here, the vehicle operation information may include the vehicle's operating state, such as whether the vehicle is flickering, such as the speed of the vehicle, a direction change, and the like, and may further include the location coordinates of the vehicle.

Here, the driving state such as the speed of the vehicle may be acquired by an electronic control unit (ECU) provided in the vehicle, and the location coordinates of the vehicle may be acquired by a GPS module provided in the vehicle, and the process of acquiring such data Since it itself is only a known technique, a more detailed description will be omitted.

Meanwhile, the warning target vehicle 300 refers to a vehicle (ie, a vehicle terminal) that receives a warning signal based on information transmitted by the DSM vehicle terminal 210 .

Transmitting the warning signal to the warning target vehicle 300 is performed through the warning processing server 100, and a more detailed description thereof will be provided later.

As described above, the warning processing server 100 receives various types of information from the DSM vehicle terminal 210 and determines whether or not a warning is generated after determining or verifying it. It can also perform a function of transmitting a warning signal.

An example of a specific functional block of the alert processing server 100 is shown in FIG. 2 .

As shown in the figure, the warning processing server 100 includes a receiving unit 110 , an event error determining unit 120 , a warning signal transmitting unit 130 , a warning target selecting unit 140 , and a storage unit 150 . can be configured.

First, the storage unit 150 performs a function of storing information or data required during the operation of the warning processing server 100 as well as information or data generated during the operation of the warning processing server 100 or received from the outside. .

In particular, the storage unit 150 may store map information and road information on the map.

The receiver 110 performs a function of receiving various signals or information from the DSM vehicle terminal 210 , and as described above, performs a function of receiving not only the DSM event signal but also vehicle driving information. Since the type of vehicle driving information has been described above, a redundant description thereof will be omitted.

The receiver 110 may continuously or periodically receive vehicle driving information while maintaining communication with the DSM vehicle terminal 210 , and may receive the DSM event signal only at a specific time.

When the DSM event signal is received from the DSM vehicle terminal 210 , the event error determining unit 120 determines whether the corresponding DSM event signal is in error by referring to the vehicle operation information received by the receiving unit 110 . carry out

That is, in the prior art, when a DSM event signal is received from the DSM vehicle terminal 210 , it is immediately processed and a warning signal is transmitted. It is to perform a kind of verification processing on the DSM event signal based on the information.

For example, FIG. 3 shows an example of vehicle driving information in which the DSM event signal is determined as an error (ie, it is determined that a warning is not required) as a result of verifying the DSM event signal.

Briefly describing FIG. 3 , in FIG. 3 , in the first line, a vehicle equipped with the corresponding DSM vehicle terminal 210 is determined based on CAN (Controller Area Network) data, which is vehicle operation information received from the DSM vehicle terminal 210 . If the speed is 20 km/h or more and it is determined that the left turn is determined to be left (50 ° ~ 130 °) within 10 seconds, the DSM event signal indicating that the driver has turned his head to the left from the DSM vehicle terminal 210 is Even if it is received, it can be determined as an event error.

As another example, when the vehicle operation information received by the receiving unit 110 includes location coordinates, the event error determining unit 120 includes the location coordinates received from the DSM vehicle terminal 210 and road information on a predetermined map. It is also possible to determine whether there is an error in the corresponding DSM event signal with reference to .

After mapping the location coordinates received from the DSM vehicle terminal 210 on a map received from a pre-installed or real-time external server (not shown), and checking the road information of the mapped location, whether the corresponding DSM event signal is in error is to judge

For example, the road information on the map may include information that can change at least one of a left turn, a right turn, a U turn, and a P turn at the location of the vehicle. ), if a DSM event signal is received from the DSM vehicle terminal 210 indicating that the driver has turned to the left for more than a preset time, it is determined that the corresponding event signal is normal, and if As a result of checking the road information, if a vehicle equipped with the corresponding DSM vehicle terminal 210 is located in a lane that cannot go straight and only turn left, the DSM event signal indicating that the driver has turned his head to the left can be determined as an error.

As another example, when the event error determination unit 120 compares the information included in the DSM event signal received from the DSM vehicle terminal 210 with a preset reference value to check the event level, and the event level is higher than or equal to the preset warning level It is determined that it is a warning situation, and whether or not there is an error may be determined with reference to the received vehicle operation information for the determination of the warning situation.

4 shows an example of a table used to confirm an event level through event analysis.

Referring to the same drawing, for example, if the percentage of time the driver closes their eyes for 3 seconds is between 50% and 70%, it corresponds to event level 3 in relation to drowsy driving, and the percentage of time is between 70% and 80%. %, it can be seen that it corresponds to event level 4.

That is, the DSM event signal received from the DSM vehicle terminal 210 may include information about the percentage of time that the driver closes his/her eyes based on 3 seconds as described above. The included information can be compared with the table of FIG. 4 to confirm the event level, and, for example, when the warning criterion is set to level 4, the event error determination unit 120 says that when the checked event level is 4, the event level is a warning condition. it can be judged

After determining that it is a warning condition, the event error determining unit 120 may finally determine whether the warning condition determination is an error with reference to vehicle operation information as described above.

Of course, this event level check and warning situation determination may be made in the DSM vehicle terminal 210 , and in this case, the DSM vehicle terminal 210 transmits the DSM event signal to the warning processing server 100 only when the event level is 4 or higher. can

The warning signal transmitting unit 130 performs a function of whether to transmit a warning signal according to the determination result of the event error determining unit 120 .

For example, when the event error determining unit 120 determines that there is an error in the DSM event signal, a warning signal is not transmitted. can be sent.

Here, the transmission of the warning signal includes not only transmission through a communication line, but also visual transmission to the corresponding display unit when a display unit (not shown) is connected. Furthermore, since it is not limited to visual transmission, it goes without saying that transmission in the form of sound may be performed.

In particular, the warning signal transmitting unit 130 may transmit a warning signal to a predetermined warning target vehicle 300 (more precisely, a terminal provided in the warning target vehicle), and the warning target vehicle 300 is a warning target according to a preset algorithm. It may be selected by the selection unit 140 .

That is, the warning target selection unit 140 performs a function of selecting a target to receive a warning signal, that is, the warning target vehicle 300 according to a preset algorithm.

For example, the warning target selection unit 140 may select surrounding vehicles as the warning target vehicle 300 based on the location coordinates received from the DSM vehicle terminal 210 .

That is, the warning target selection unit 140 may determine the reference position of the vehicle that has transmitted the DSM event signal using the position coordinates included in the DSM event signal, and select the vehicles located in the vicinity based on the reference position. It can be selected as the warning target vehicle 300 .

This is based on the premise that location information of surrounding vehicles can be acquired, and in this embodiment, it is assumed that the surrounding vehicles also periodically/continuously transmit their current locations.

Furthermore, the warning target selection unit 140 may select the warning target vehicle 300 by referring to the location coordinates received from the DSM vehicle terminal 210 and road information on a predetermined map.

For example, the warning target selection unit 140 may include a vehicle in the same lane as the vehicle (reference vehicle 200 ) that transmitted the DSM vehicle terminal 210 , a rear vehicle behind the reference vehicle 200 , and the reference vehicle 200 . ) and at least one of the vehicles traveling in the same direction may be selected as the warning target vehicle 300 .

As another example, the warning target selection unit 140 may also select a vehicle traveling in the opposite direction to the reference vehicle 200 as the warning target vehicle 300 , which may vary depending on whether or not a median is present.

For example, if the road information on the map includes the presence or absence of a median separator, the warning target selection unit 140 warns the vehicle traveling in the opposite direction, even if it is near the reference vehicle 200, because the risk of an accident is low. The target vehicle 300 is not selected.

Hereinafter, an overall control flow of the alert processing server 100 according to an embodiment of the present invention will be described with reference to FIG. 5 .

The warning processing server 100 receives vehicle driving information periodically or continuously from the DSM vehicle terminal 210 (step S1), and when a DSM event signal is received from the DSM vehicle terminal 210 at a point in time (step S3) , it is determined whether there is an error in the corresponding DSM event signal based on the vehicle operation information (step S5).

If it is determined that the corresponding DSM event signal is an error as a result of the determination (step S7), the warning processing server 100 enters a standby state without performing a function such as sending a warning signal.

When it is determined that the DSM event signal is not an error as a result of the determination (step S7), the warning processing server 100 selects a warning target vehicle 300 from among surrounding vehicles (step S9).

In selecting the warning target vehicle 300 , vehicle operation information received from the DSM vehicle terminal 210 and road information on a pre-installed map may be used.

When the warning target vehicle 300 is selected, the warning processing server 100 transmits a warning signal to the selected warning target vehicle 300 (step S11).

In the above-described embodiment, both the DSM event signal and vehicle driving information are received from the DSM vehicle terminal 210 as an example. However, the DSM vehicle terminal 210 is divided into two devices, one of which transmits only the DSM event signal. and the other one may transmit vehicle driving information.

In addition, in the above-described embodiment, as an example, the warning processing server 100 determines whether there is an error with respect to the DSM event signal transmitted by the DSM vehicle terminal 210 included in the predetermined reference vehicle 200, but this determination This may be done in the reference vehicle 200 .

For example, the DSM vehicle terminal 210 may generate a DSM event signal by analyzing a driver image captured by a camera as in the conventional method, and when the corresponding DSM event signal is detected, the collected vehicle operation information is used. Thus, it is possible to determine whether the corresponding DSM event signal is in error.

In particular, when predetermined map information is received from the outside or is already provided, the DSM vehicle terminal 210 can determine whether the DSM event signal is in error by referring to the location coordinates obtained by the GPS module and road information on the map. will be.

After verifying whether an error has occurred in the conventional DSM event signal, the DSM vehicle terminal 210 may transmit a warning transmission request signal to the warning processing server 100 to notify surrounding vehicles, and If direct communication is made between the two, the DSM vehicle terminal 210 may directly transmit a warning signal to nearby vehicles.

In this case, after the DSM vehicle terminal 210 selects the warning target vehicle 300 , the warning signal may be transmitted only to the corresponding warning target vehicles 300 .

Since the process of selecting the warning target vehicle 300 is the same as described above, a redundant description will be omitted.

Meanwhile, it goes without saying that the process of performing each of the above-described embodiments may be performed by a program or application stored in a predetermined recording medium (eg, computer-readable). Here, the recording medium includes an electronic recording medium such as a random access memory (RAM), a magnetic recording medium such as a hard disk, and an optical recording medium such as a compact disk (CD).

In this case, the program stored in the recording medium may be executed on hardware such as a computer or smart phone to perform each of the above-described embodiments. In particular, at least one of the functional blocks of the alert processing server 100 according to the present invention described above may be implemented by such a program or application.

In addition, the present invention is not limited to the specific embodiments described above, but can be practiced with various modifications and modifications within the scope without departing from the gist of the present invention. It will be apparent that such modifications and variations are included in the present invention provided they fall within the scope of the appended claims.

100: warning processing server 200: reference vehicle
210: DSM vehicle terminal 300: warning target vehicle
110: receiving unit 120: event error determining unit
130: warning signal transmitting unit 140: warning target selection unit
150: storage

Claims (26)

In the control method of a warning processing server that transmits a warning signal by communicating with a DSM vehicle terminal that transmits a DSM (Driver State Monitoring) event signal,
(a) receiving vehicle driving information from the DSM vehicle terminal;
(b) when the DSM event signal is received from the DSM vehicle terminal, determining whether the corresponding DSM event signal is in error by referring to the vehicle operation information received in step (a);
(c) If there is an error in the DSM event signal as a result of the determination in step (b), a warning signal is not transmitted, and if there is no error in the DSM event signal as a result of the determination in step (b), a warning signal is transmitted A control method of an alert processing server comprising the step of: According to claim 1,
In step (c), a warning signal is transmitted to the warning target vehicle. 3. The method of claim 2,
The vehicle operation information received from the DSM vehicle terminal in step (a) includes location coordinates,
(d) A control method of a warning processing server, characterized in that the warning target vehicle is selected by referring to the location coordinates received from the DSM vehicle terminal and the obtained road information on the map. According to claim 1,
The control method of the warning processing server, characterized in that the vehicle operation information received from the DSM vehicle terminal in step (a) includes at least one of a vehicle speed, whether a vehicle is flickering, such as a direction change, and a vehicle traveling direction. According to claim 1,
The vehicle operation information received from the DSM vehicle terminal in step (a) includes location coordinates,
In step (b), it is determined whether the corresponding DSM event signal is in error by referring to the location coordinates received from the DSM vehicle terminal and the obtained road information on the map. 6. The method of claim 5,
The control method of the warning processing server, characterized in that the information on the road on the map includes at least one of a left turn, a right turn, a U-turn, and a P-turn direction changeable information at the location of the vehicle. According to claim 1,
In the step (b), after checking the event level by comparing the information included in the DSM event signal received from the DSM vehicle terminal with a preset reference value, if the event level is higher than the preset warning level, it is determined as a warning situation, and the corresponding determining whether there is an error with reference to the vehicle operation information received in step (a) for determining the warning situation;
In step (c), if there is an error in determining the warning condition as a result of the determination in step (b), no warning signal is sent, and if there is no error in determining the warning condition as a result of the determination in step (b) A control method of a warning processing server, characterized in that transmitting a warning signal. In the control method of a DSM vehicle terminal for detecting a DSM (Driver State Monitoring) event signal,
(a) generating vehicle driving information;
(b) when the DSM event signal is detected, determining whether the corresponding DSM event signal is in error by referring to the vehicle operation information generated in step (a);
(c) If there is an error in the DSM event signal as a result of the determination in step (b), a warning signal is not transmitted, and if there is no error in the DSM event signal as a result of the determination in step (b), a warning signal is transmitted A control method of a DSM vehicle terminal comprising the step of: 9. The method of claim 8,
The vehicle operation information of step (a) includes location coordinates,
(d) A control method of a DSM vehicle terminal, characterized in that after selecting a warning target vehicle by referring to the location coordinates and the obtained road information on the map, controlling the warning signal to be transmitted to the corresponding warning target vehicle. 9. The method of claim 8,
The control method of the DSM vehicle terminal, characterized in that the vehicle operation information includes at least one of a vehicle speed, whether a vehicle is flickering, such as a direction change, and a vehicle traveling direction. 9. The method of claim 8,
The vehicle operation information of step (a) includes location coordinates,
In step (b), the control method of the DSM vehicle terminal, characterized in that it is determined whether the corresponding DSM event signal is in error by referring to the location coordinates and the obtained road information on the map. According to claim 1,
In step (b), after checking the event level by comparing the information included in the DSM event signal with a preset reference value, if the event level is higher than or equal to the preset warning level, it is determined as a warning situation, and the (a) determining whether there is an error by referring to the vehicle operation information generated in step (a);
In step (c), if there is an error in determining the warning condition as a result of the determination in step (b), no warning signal is sent, and if there is no error in determining the warning condition as a result of the determination in step (b) A control method of a warning processing server, characterized in that transmitting a warning signal. A computer-readable recording medium recording a program for executing the method of any one of claims 1 to 12. 13. An application program stored in a computer-readable recording medium in combination with hardware to execute the method of any one of claims 1 to 12. In the warning processing server for transmitting a warning signal by communicating with a DSM vehicle terminal that transmits a DSM (Driver State Monitoring) event signal,
a receiver for receiving vehicle driving information from the DSM vehicle terminal;
an event error determining unit that, when the DSM event signal is received, determines whether the corresponding DSM event signal is in error by referring to the vehicle operation information received from the receiving unit;
A warning signal to transmit a warning signal when there is no error in the DSM event signal as a result of the determination of the event error determining unit as a result of the event error determination unit not sending out a warning signal if there is an error in the DSM event signal Alert processing server comprising a transmitter. 16. The method of claim 15,
The warning signal transmitter transmits a warning signal to a predetermined warning target vehicle. 17. The method of claim 16,
The vehicle operation information received by the receiver includes location coordinates,
Further comprising a warning target selection unit for selecting a warning target vehicle by referring to the location coordinates received from the DSM vehicle terminal and the obtained road information on the map,
The warning signal transmitting unit transmits the warning signal to the warning target vehicle selected by the warning target selection unit. 16. The method of claim 15,
The vehicle operation information received by the receiver includes at least one of a vehicle speed, whether a vehicle is flickering, such as a direction change, and a vehicle traveling direction. 16. The method of claim 15,
The vehicle operation information received by the receiver includes location coordinates,
The event error determining unit determines whether the corresponding DSM event signal is in error by referring to the location coordinates received from the DSM vehicle terminal and the obtained road information on the map. 20. The method of claim 19,
The warning processing server, characterized in that the road information on the map includes at least one direction changeable information of a left turn, a right turn, a U-turn, and a P-turn at the location of the vehicle. 16. The method of claim 15,
The event error determination unit compares the information included in the DSM event signal received from the DSM vehicle terminal with a preset reference value to determine the event level, and determines that the event level is greater than or equal to the preset warning level as a warning situation, Determining whether there is an error with reference to the received vehicle operation information for the warning situation determination,
The warning signal sending unit does not transmit a warning signal when there is an error in determining the warning condition as a result of the determination of the event error determination unit, and a warning when there is no error in determining the warning condition as a result of the determination of the event error determination unit Alert processing server, characterized in that for transmitting a signal. In the DSM vehicle terminal for detecting a DSM (Driver State Monitoring) event signal,
a vehicle operation information generator configured to generate vehicle operation information;
an event error determining unit that, when the DSM event signal is detected, determines whether the corresponding DSM event signal is in error by referring to the vehicle operation information generated by the vehicle operation information generation unit;
If there is an error in the DSM event signal as a result of the event error determination unit, a warning signal is not transmitted, and when there is no error in the DSM event signal as a result of the event error determination unit determination, the transmission of a warning signal is controlled. DSM vehicle terminal comprising a control unit. 23. The method of claim 22,
The vehicle operation information includes location coordinates,
The DSM vehicle terminal further comprising: a warning target selection unit that selects a warning target vehicle by referring to the location coordinates and the acquired road information on the map, and then controls to transmit a warning signal to the warning target vehicle. 23. The method of claim 22,
The DSM vehicle terminal, characterized in that the vehicle operation information includes at least one of a vehicle speed, whether a vehicle is flickering, such as a direction change, and a vehicle traveling direction. 23. The method of claim 22,
The vehicle operation information includes location coordinates,
The event error determining unit determines whether the corresponding DSM event signal is in error by referring to the location coordinates and the acquired road information on the map. 23. The method of claim 22,
The event error determining unit compares the information included in the DSM event signal with a preset reference value to determine the event level, and determines that the event level is greater than or equal to the preset warning level as a warning situation, and determines the warning status Determining whether there is an error by referring to the received vehicle operation information,
The control unit controls so as not to transmit a warning signal when there is an error in the determination of the warning situation as a result of the determination of the event error determination unit, and a warning signal when there is no error in determination of the warning condition as a result of the determination of the event error determination unit Alert processing server, characterized in that the control to be sent.

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