KR101738036B1

KR101738036B1 - Automatic Collision Notification System Using Telematics

Info

Publication number: KR101738036B1
Application number: KR1020150100331A
Authority: KR
Inventors: 권상구; 이상민
Original assignee: 현대자동차주식회사
Priority date: 2015-07-15
Filing date: 2015-07-15
Publication date: 2017-05-22
Also published as: KR20170010144A

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an automatic collision notification system using telematics, and more particularly, to an automatic collision notification system using telematics to receive an airbag crash signal output from an airbag controller (ACU) (DTC code) according to the type of vehicle collision output from the airbag control device in the ACN information, and confirms the failure code included in the ACN information at the telematics agent center, And the state of the vehicle.

Description

{Automated Collision Notification System Using Telematics}

In general, telematics refers to a new concept of vehicle wireless internet service that combines automobile and wireless communication. It is based on voice and data communication using wireless communication and position information system using satellite. And provides user-oriented information and communication services such as the Internet by exchanging information using a communication system.

Telematics is a combination of telecommunication and information science (inforMATICS), which means a combination of automobile, computer, and communication technology. Currently, the most widely known are the navigation system and the GPS Global Positioning System (GPS) system.

In addition, another function of the telematics device is to make remote diagnosis of the malfunction of the vehicle in the remote car service center, and to provide various contents such as wireless internet, remote diagnosis of the vehicle and emergency relief support, traffic information, It is also used as a function, and it supports mobile office or e-mail service.

The telematics technology has been expanding its functions and uses along with the development of information and communication technology. In recent years, the telematics technology has been applied to a variety of applications such as vehicle location information service using telematics technology, vehicle theft and accident detection, remote vehicle diagnosis, emergency rescue, The application scope of mobile office using wireless Internet and e-mail service is expanding.

Meanwhile, among various services using the telematics, there is an Automatic Collision Notification (ACN) service. The ACN service is a service developed to receive an emergency rescue service by automatically connecting to the telematics agent center by applying the telematics technology when the airbag is deployed due to a vehicle collision and delivering the collision situation to the agent center .

In other words, when the airbag of the vehicle is deployed, the control unit of the vehicle is an automation system that processes the information related to the vehicle collision through a predetermined standardized data message and provides it to the telematics agent server.

The ACN service of conventional telematics uses a PWM signal to check whether the airbag deployment of the vehicle has occurred. Figure 1 schematically shows an ACN service using such a PWM signal. However, in the case of the PWM signal, since it is constituted by a hard wire, it has a disadvantage that it is vulnerable to a novever. In fact, there are many problems such as misunderstanding of the airbag deployment due to generation of noise such as a horn of a vehicle, Respectively.

As a technique for improving this, a technology for simultaneously checking the CAN signal together with the PWM signal has been developed. FIG. 2 is a flow chart schematically showing an ACN service for simultaneously confirming the PWM signal and the CAN signal. As shown, the technique identifies both the PWM signal and the CAN signal at the initial airbag deployment and notifies the actual occurrence of an accident if the airbag deployment is confirmed from the two signals, and if only one of the signals is identified, And an accident confirmation step. However, in this case, too, there is a problem of reliability of the PWM signal, that is, there is a possibility of erroneous recognition due to the inflow of the unspecified noise to the PWM signal.

In order to address these drawbacks, namely the problems associated with the relatively low reliability of the PWM signal, recent ACN services have eliminated the unreliable PWM signal and recognized the airbag deployment based solely on the CAN signal, Technology. Figure 3 schematically illustrates this technique.

However, although the ACN service using the CAN signal may be relatively strong against external noise, it may cause a malfunction due to erroneous transmission of the CAN signal in an electronic parking brake (EPB) of a specific model, There is still a possibility of malfunction due to the use of the CAN signal by the non-product manufactured products.

Therefore, in providing ACN services, it is required to develop a technology capable of solving the above-mentioned problems and providing a reliable service.

The present invention has been made to solve the above problems,

An airbag system comprising: an airbag crash signal output from an airbag control unit (ACU) provided in a vehicle at the time of deployment of an airbag in response to a vehicle collision to generate ACN information, (DTC code) according to the type of the vehicle, the telematics agent center checks the failure code included in the ACN information to determine whether the vehicle is deployed in the airbag and the state of the vehicle, thereby increasing the reliability of the ACN information It has its purpose.

According to an aspect of the present invention,

An automatic crash notification system using telematics, the system comprising: a telematics terminal for receiving an airbag deployment signal output from an airbag control unit of a vehicle, generating ACN information, and transmitting the generated ACN information to a telematics agent center, (DTC code) output from the airbag control unit upon receipt of an airbag deployment signal from the airbag control unit.

Further, the telematics terminal may further confirm the door state signal output from the airbag control unit, and when it is determined that the door of the vehicle is open, the telematics terminal further includes a door state signal to generate ACN information.

In addition, the telematics terminal determines that an ACN error has occurred if a failure code (DTC code) is not received after receiving the airbag deployment signal, counts the number of ACN error occurrences, and if the number of ACN error occurrences exceeds a predetermined reference value And outputs an over error occurrence signal when the value exceeds the threshold value.

In addition, the telematics terminal determines that an ACN error has occurred if the door of the vehicle is not opened after receiving the airbag deployment signal and the failure code, counts the number of times of ACN error occurrence, And outputs an over error occurrence signal if the value exceeds the threshold value.

When the ACN information is received from the telematics terminal, the telematics agent center determines the state of the vehicle by checking the DTC code and the door state signal in the ACN information, and upon receiving the excess error occurrence signal from the telematics terminal, And to send a vehicle check guide message to the vehicle.

The present invention having the above-

Based on the airbag deployment signal output from the airbag control unit, recognizes whether the vehicle has collided or not, and further includes a malfunction code (DTC code) in the ACN information for transmitting the vehicle collision to the telematics agent center Therefore, there is an effect of solving the problem of occurrence of malfunction due to a mistake in the conventional automatic collision notifying service.

The telematics agent center notifies the telematics agent center of the number of judging errors caused by the erroneous recognition based on the airbag deployment signal and counts the number of judging errors according to the erroneous expression. If the number of judging errors exceeds the reference value, It is possible to provide a vehicle inspection guide service, thereby improving customer satisfaction.

Figure 1 schematically shows an ACN service using such a PWM signal.
FIG. 2 is a flow chart schematically showing an ACN service for simultaneously confirming the PWM signal and the CAN signal.
Figure 3 schematically illustrates an ACN service that recognizes the deployment of an airbag based only on the CAN signal.
4 is a block diagram showing a basic configuration of an automatic collision notifying system using telematics according to a preferred embodiment of the present invention,
FIG. 5 is a flow chart showing the flow of signals in each step when ACN service is provided through the structure of FIG.

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

FIG. 4 is a block diagram showing a basic configuration of an automatic collision notifying system using telematics according to a preferred embodiment of the present invention, FIG. 5 is a flowchart showing the flow of signals in each step when ACN service is provided through the structure of FIG. Chart.

As shown in FIG. 4, the automatic collision notification system using telematics of the present invention is implemented through an airbag control unit 10, a telematics terminal 20, and a telematics agent center 30 installed in a vehicle.

The airbag control unit (ACU) 10 is a component provided to control the deployment of one or more airbags provided in the vehicle, And deploys the airbag in the shortest time in the event of a vehicle collision to secure the safety of the driver. The vehicle collision detection and the airbag deployment structure of the airbag control unit 10 are well-known matters, and a detailed description thereof will be omitted.

The airbag control unit 10 is configured to deploy the airbag in the shortest time when a vehicle collision is determined, and to generate an airbag crash signal to output through the CAN communication line in the vehicle to notify that the airbag has been deployed. The airbag deployment signal may be output from the airbag control unit 10 and transmitted to various control units of the vehicle through the CAN communication line,

The present invention uses the output airbag deployment signal as a criterion for generating the ACN information by receiving the airbag deployment signal from the telematics terminal 20. The telematics terminal 20 detects the airbag deployment signal output from the airbag control unit 10 from the in-vehicle CAN signal as described above, and determines whether the airbag has been deployed (step S001).

For example, if it is assumed that the airbag deployment signal is the CF_ACU_CshAct Signal in the CAN signal, the telematics terminal 20 checks the CF_ACU_CshAct Signal from the CAN signal, and if the value is 1 (CF_ACU_CshAct Signal = 1) It can be configured to determine that the airbag of the vehicle has been deployed.

Meanwhile, the telematics terminal 20 is a known device for constructing a telematics system in a vehicle. The telematics terminal 20 is connected to the airbag control unit 10 through a wired or wireless connection, or via a CAN communication line provided in the vehicle Thereby receiving the airbag deployment signal from the airbag control unit 10, thereby recognizing the deployment of the airbag.

When the deployment of the airbag is recognized, the telematics terminal 20 generates ACN information and transmits it to the telematics agent center 30. At this time, the mechanical configuration of the telematics terminal 20, for example, a mobile communication module provided for the mobile communication with the telematics center 20 can be configured in the same manner as any conventional telematics terminal 20 .

In the preferred embodiment of the present invention, the telematics terminal 20 further confirms a failure code (DTC code) output from the airbag control unit 10 when ACN information is generated, and when the reception of the failure code is confirmed To generate ACN information. (Step S002)

The DTC (Diagnostic Trouble Codes) code is a code that diagnoses various devices required for vehicle control from various controllers of the vehicle, for example, a failure of a sensor or an actuator and stores the code as a stored code. This is the code used.

The DTC code is also output from the airbag control unit. For example, when the vehicle is in frontal collision, the DTC code is output as Code AAAA, and when the vehicle rolls over, the DTC code is output as CODE BBBB. It will be understood by those skilled in the art that the above codes are merely one embodiment, and that other codes not described may be output depending on the vehicle type.

The present invention generates the DTC code as described above in the ACN information, analyzes the DTC code included in the information by the telematics agent center 30 that received the ACN information, determines whether the vehicle is malfunctioning, So as to increase the reliability of the signal.

As a result, when the telematics terminal recognizes the airbag deployment from the airbag deployment signal received via the CAN communication signal, the telematics terminal generates ACN information including the failure code output from the airbag control unit 10, The telematics agent center 30 which has received the ACN information including the failure code judges the state of the vehicle by referring to the failure code contained in the ACN information and judges the reliability of the deployment of the airbag And can provide an appropriate service corresponding thereto. (Step S003)

On the other hand, the telematics terminal 20 may further receive a vehicle door signal (Door Status Signal) when it is determined that the airbag deployment according to the reception of the airbag deployment signal as described above is used to generate ACN information. (Step S004)

In other words, when the telematics terminal 20 receives the airbag deployment signal from the CAN signal, it further verifies the door state signal output from the ACU. If it is determined that the door of the vehicle is opened, May further comprise a status signal.

This configuration is a configuration for a vehicle configured to open the door of the vehicle at the same time as the deployment of the airbag, and is a configuration for increasing the reliability of deployment of the airbag from the opening or closing of the door of the vehicle.

Accordingly, the telematics agent center 30 further checks the door status signal of the vehicle in the received ACN information. If it is determined that the door is opened, the telematics agent center 30 determines that the airbag of the vehicle has been deployed, have.

Meanwhile, the telematics terminal 20 determines whether or not an error has occurred due to ACN information generation (hereinafter, referred to as 'ACN error') through the above procedures, and counts the ACN error. The determination of the ACN error may be based on the fact that despite the airbag deployment signal being received via the CAN communication line, the failure of the door (DTC code) has not been received or the airbag deployment signal and the failure code have been received It can be determined that an error has occurred, and the telematics terminal 20 is caused to count the occurrence of such an error. (Step S005)

The telematics terminal 20 transmits to the telematics agent center 30 an excess error occurrence signal indicating that an ACN error has occurred when the number of counted ACN errors exceeds a preset reference value N, The control unit 30 may provide a vehicle inspection guidance service for guiding the vehicle to be inspected, for example, by issuing an outbound call to the corresponding vehicle when receiving the excess error occurrence signal. (Step S006)

Here, the reference value N may be set arbitrarily when manufacturing the telematics terminal 20 or using the telematics terminal 20 for the first time, and may be varied as needed.

The telematics service center 30 includes a known mobile communication module and communicates with the telematics terminal 20 through the mobile communication module. The telematics service center 30 uses the mobile communication network Receives the ACN information received, and provides an incident response service in response to the received ACN information.

The incident response service of the telematics agent center 30 detects and analyzes location information from the received ACN information, searches for the position of the rescue units closest to the detected location information, and transmits the corresponding service The telematics agent center 30 may include any action of transmitting signals through a communication network and the corresponding structure of the telematics agent center 30 may be the same as any known telematics agent center 30. Therefore, do.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. . It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.

10: Airbag control unit
20: Telematics terminal
30: Telematics Agent Center

Claims

In an automatic collision notification system using telematics,
And a telematics terminal for receiving the airbag deployment signal output from the airbag control unit of the vehicle, generating ACN information, and transmitting the ACN information to the telematics agent center,
The telematics terminal includes:
(DTC code) output from the airbag control unit upon receiving an airbag deployment signal from the airbag control unit,
If a failure code (DTC code) is not received after receiving the airbag deployment signal, it is determined that an ACN error has occurred and the number of ACN error occurrence counts,
And outputs an over error occurrence signal when the ACN error occurrence count exceeds a preset reference value.

The method according to claim 1,
The telematics terminal includes:
Further confirming a door state signal output from the airbag control unit,
When the door of the vehicle is determined to be open, ACN information is further generated by including a door state signal.

delete

3. The method of claim 2,
The telematics terminal includes:
If the door of the vehicle is not opened after receiving the airbag deployment signal and the failure code, it is determined that an ACN error has occurred and the number of ACN errors is counted. If the ACN error occurrence number exceeds a preset reference value, Wherein the automatic collision notifying system uses telematics.

3. The method according to any one of claims 1 to 3,
The telematics agent center
Upon receipt of the ACN information from the telematics terminal, checks the DTC code and the door state signal in the ACN information to determine the vehicle state,
Wherein the controller is configured to transmit a vehicle inspection guidance message to the vehicle when receiving an over error occurrence signal from the telematics terminal.