KR20120019829A - Apparatur for memorizing and analyzing vehicle accident - Google Patents

Abstract

PURPOSE: An apparatus for memorizing and analyzing vehicle accident is provided to record accident information in accident and transmit the accident information to an analysis device in order to analyze the accident automatically. CONSTITUTION: An apparatus for memorizing and analyzing vehicle accident comprises an accident recorder module(10) and an accident analysis module(20). The accident recorder module comprises a data signal processing unit(11), a memory unit(13), a data output processing unit(14), and a data operation processing unit(12). The data signal processing unit processes vehicle operation information to specific data which can be used to the accident analysis module. The memory unit stores the processed data. The data output processing unit transmits the processed data, storing in the memory unit, to the accident analysis module. The data operation processing unit controls so that the stored data is transmitted to the accident analysis module. The accident analysis module comprises a data input processing unit(21), an accident record analysis unit(22), and an analyzed information output unit(23).

Description

Vehicle accident record and analysis device {APPARATUR FOR MEMORIZING AND ANALYZING VEHICLE ACCIDENT}

The present invention relates to a vehicle accident recording and analysis device, and more particularly to a vehicle accident recording and analysis device using digital forensics.

The vehicle black box plays an important role in identifying the flight recorder in the vehicle and the cause of the accident. It analyzes all the driving conditions of the vehicle at the time of the accident, such as video and speed, to find out the cause of the accident. Most of the vehicle black boxes that have been filed so far are a digital driving recorder that periodically records the speed, time, and distance of the vehicle, or a drive recorder device that stores information such as steering wheel angle, brake strength, engine speed, or vehicle collision. Vehicle driving path tracking device that detects and stores the vehicle's moving path, speed, and time through the vehicle video storage device or GPS system that compresses / stores the video and audio data inside / outside the vehicle or theft, fire, traffic information, emergency Telematics technology to perform emergency signal transmission.

The vehicle black box device disclosed in Korean Patent Publication No. 10-0503303 includes a first longitudinal acceleration detecting means for detecting a first longitudinal acceleration of a vehicle, a second longitudinal acceleration detecting means for detecting a second longitudinal acceleration of a vehicle, and a transverse direction of the vehicle. Disclosed is a technique for calculating a yaw rate of a vehicle by substituting lateral acceleration detecting means for detecting acceleration, braking detecting means, vehicle speed detecting means, and first and second longitudinal accelerations.

Such a vehicle black box device disclosed in Korean Patent Publication No. 10-0503303 considerably simplified its structure than a conventional vehicle black box in that it uses a longitudinal acceleration sensing means and a lateral acceleration sensing means irrelevant to vehicle information. .

However, the vehicle black box device disclosed in Korean Patent Publication No. 10-0503303 still receives information from the vehicle braking detecting means and the vehicle speed detecting means, and the data calculated by the longitudinal acceleration detecting means and the lateral acceleration detecting means are accelerated. The vehicle's black box is still complicated in that the vertical / lateral acceleration detecting means still has a complicated structure because of the exact physical quantity required, and a configuration for using the information obtained from the vertical / lateral acceleration detecting means for the yaw rate calculation is added separately. It has a problem that it is difficult to commercialize. Therefore, in the case of an acceleration sensor or the like, the structure needs to be simple and capable of obtaining desired information.

In addition, there is a necessity to automatically handle a vehicle accident when it occurs. In this regard, the traffic accident processing method using the Internet of Korea Patent No. 10-0414158 is connected to an internet server through an internet network to generate a skid mark, When appropriate, the on-site situation is configured to inform the civil and criminal handling method accordingly and to provide a program for calculating the amount of damages. In this case, it is not useful when the accident driver is injured or unconscious because it is necessary to connect by using the internet and input the scene situation directly, not the traffic accident processing method automatically performed at the accident site. It is not really helpful because you have to connect to the Internet and enter the information.

Looking at another conventional technology, the traffic accident compensation business processing system and method using wireless data communication of Korea Patent Publication No. 10-0639346, the reception management system, damage assessment system, radio frequency identification system and location tracking system, state management Through the system, mobile authentication system and mobile remittance system, when the accident party provides the location of the traffic accident site through the wireless data communication to the control system, the site investigator is dispatched to the site, and the site investigator prepares the accident investigation report by Based on the incident investigation report received, it is sent to the reception management system, and the damage is corrected and transmitted to the field investigator's mobile communication terminal, the authentication number is transmitted to the accident communication party's mobile communication terminal, and the accident party receiving the authentication number is authenticated. Provide your number and social security number to pay your claim to your account. .

However, in this case, the accident party should use the wireless data, the operation of the data can be made in the interim process, there is a problem that is limited to only insurance-related tasks.

The present invention has been made to solve the above problems, to provide a device in which accident analysis information is automatically recorded by recording the accident record information of the vehicle when the vehicle accident occurs, and transmits it to the analysis device. In particular, it is intended to provide a device that prevents forgery of data in the process of transmitting data from the accident recorder to the accident analysis device.

In addition, the acceleration sensor includes a magnetic acceleration, and to provide an accident analysis device that can obtain the analysis data through the filtering and integration process. In particular, digital forensics is used to prevent data forgery and to provide a device that can obtain reliable analysis results.

The present invention provides the following problem solving means to solve the above problems.

Vehicle accident recording and analysis apparatus according to the present invention includes an accident recording module 10 and the accident analysis module 20, the accident recording module 10 is an acceleration sensor for obtaining a 3-axis acceleration value And a three-axis magnetic hall sensor capable of measuring a vehicle's posture and position, a camera module for acquiring an external image, and an accident record obtained by the acceleration sensor, the two-axis magnetic sensor, and the camera module. Information and vehicle operation information obtained through communication with the ECU of the vehicle; a data signal processing unit 11 for processing the data in a format used in the accident recording module 10; and a memory unit 13 for storing the processed data; A data output processor 14 for transmitting the processed data stored in the memory 13 to the accident analysis module 20, and storing the processed data in the memory 13, and analyzing the stored data. Transfer to module 20 And a data operation processing unit 12 for controlling, and the accident analysis module 20 converts the data input processing unit 21, which receives the data from the accident recording module 10, and the transmitted data into an electronic document file. And an accident record analysis unit 22 for extracting and analyzing collision information from the data, and an analysis information output unit 23 for visualizing and outputting the contents analyzed by the accident record analysis unit 22.

At this time, the memory unit 13 is preferably provided to be forged or modulated with respect to the externally stored data.

The accident recording module 10 may further include a GPS module and a timer, and the accident record information may further include location coordinate information obtained from the GPS module and date and time information obtained from the timer. .

The present invention has been made to solve the above problems, there is an effect of providing an apparatus for automatically analyzing the accident by recording the accident record information of the vehicle when the vehicle accident occurs, and transmitting it to the analysis device. In particular, there is an effect to provide a device for preventing the forgery of data in the process of transmitting data from the accident recording device to the accident analysis device.

In addition, in the case of the acceleration sensor, it is effective to provide an accident analysis apparatus including magnetic acceleration and obtaining analysis data through filtering and integration processes. In particular, digital forensics is used to prevent data forgery and to provide a device capable of obtaining highly reliable analysis results.

1 is a block diagram of an accident recording and analysis device of the present invention.
2 is a flow chart of an accident record of the present invention.
3 is a flowchart of an accident analysis of the present invention.

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

However, in describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. Even if the terms are the same, if the displayed portions are different, it is to be noted that the reference numerals do not match.

The terms to be described below are terms set in consideration of functions in the present invention, and may be changed according to a user's intention or custom such as an experimenter and a measurer, and the definitions should be made based on the contents throughout the present specification.

1 is a block diagram of an accident recording and analyzing apparatus according to the present invention. The present invention includes an accident record module 10 for receiving and storing information related to an accident record, and an accident analysis module 20 analyzing the accident record information when an accident occurs to find out the cause of the accident.

The accident recording module 10 includes an acceleration sensor that acquires a 3-axis acceleration value, a three-axis magnetic sensor that can measure the attitude and position of the vehicle, and an external image. Accident record information acquired by the camera module, the acceleration sensor, the two-axis magnetic sensor and the camera module, and vehicle operation information acquired through communication with the ECU of the vehicle as data of a format used in the accident record module 10. The data signal processor 11 for processing, the memory 13 for storing the processed data, and the data output processor 14 for transmitting the processed data stored in the memory 13 to the accident analysis module 20. And a data operation processing unit 12 for storing the processed data in the memory unit 13 and controlling the stored data to be transmitted to the accident analysis module 20.

The accident analysis module 20 converts the transmitted data into an electronic document file and the data input processing unit 21 which receives data from the accident recording module 10, and records an accident by extracting and analyzing collision information from the data. It is preferable to include an analysis unit 22, and an analysis information output unit 23 for visualizing and outputting the analysis of the accident record analysis unit 22.

In the present specification, the accident record information is information of a predetermined time before and after the collision based on the time of the collision of the vehicle, and accident management information such as the accident time and the unique identification information of the vehicle, acceleration of the vehicle, angular velocity, collision physical quantity, and the like. Car movement information related to the vehicle's motility, vehicle operation information such as the speed of the vehicle, engine RPM, and external input information obtained through an external device such as GPS information and camera image information.

The accident recording module 10 is a device capable of storing in an electronic recording medium. The accident recording module 10 generally includes a data signal processing unit 11, a data operation processing unit 12, a memory unit 13, and a data output processing unit 14.

The data signal processing unit 11 performs a function of processing the acquired accident record information so that the data operation processing unit 12 can process it.

The data operation processing unit 12 stores the signal processed through the data signal processing unit 11 in the memory unit 13 and simultaneously stores the accident record information stored in the memory unit 13 through the data output processing unit 14. 20 to perform the function. In general, the data operation processing unit 12 is provided with an algorithm for a vehicle collision detection and a method of storing data before and after a collision in a memory.

The accident analysis module 20 converts the accident record information transmitted from the accident record module 10 into an electronic document file, analyzes the converted electronic document file, and visualizes and provides the converted electronic document file. And an input processor 21, an accident record analyzer 22, a drive-based device 24, and an analysis information output 23.

The data input processing unit 21 performs a function of receiving accident record information stored in the memory unit 13 of the accident recording module 10.

The accident record analyzer 22 converts the electronic record transmitted through the data input processor 21 into an electronic document file and analyzes the converted electronic document file. In addition, the collision information is extracted and obtained from the accident record information.

The driving base unit 24 provides an executable environment for the accident record analyzing unit 22 to process the accident record information transmitted through the data input processing unit 21.

The analysis information output unit 23 performs a function of visualizing and outputting the contents analyzed by the accident record analyzer 22.

The accident recording module 10 may include an acceleration sensor or may be connected to an external acceleration sensor. The acceleration sensor preferably has the function of a three-axis magnetic sensor to obtain the attitude and position of the vehicle body as well as a 3-axis accelerometer. However, it is also possible to use two types of sensors respectively. These acceleration sensors are used to measure and calculate vehicle motion information to reproduce accident situations.

In addition, the accident recording module 10 may include a camera module for acquiring an external image, or may be connected to an external camera module. The camera module should have a shooting angle of 140 degrees or more to minimize the blind area. A fisheye lens having an angle of view close to 180 may be used, and in this case, it is preferable to add a module for correcting the distorted image.

In general, the camera module continuously photographs an image of an external situation, and the image is subjected to a buffering process for a predetermined time from the current time point through the data signal processor 11. Then, when a vehicle accident occurs, a value greater than or equal to a predetermined size is measured by the acceleration sensor. In this case, the data signal processing unit 11 records the measured value through the image object and the acceleration sensor for a predetermined time before and after the data. It is processed through the arithmetic processing unit 12 and stored in the memory unit 13.

The accident recording apparatus 10 includes a timer unit. The timer unit controls the current date and time. When a vehicle accident occurs, the timer unit stores the date and time in the memory unit 13 through the data operation processing unit 12.

The accident recording apparatus 10 is provided to enable communication with a control unit such as an ECU of a vehicle. From this, information such as vehicle speed, engine speed (RPM), steering angle, brake switch contact point, headlight switch contact point, turn signal switch contact point, seat belt switch, and the like are obtained, and the data is processed through the memory 12. It is stored in the unit 13. In order to collect such vehicle operation information, a communication interface between the in-vehicle network and the accident recording module 10 is used based on a protocol of a link layer of CAN communication and K-line communication or an application layer such as KWP2000 and UDS.

Incident recording device 10 is provided to be able to communicate with the GPS device. Data such as latitude and longitude, such as an accident position at the time of an accident, is stored in the memory unit 13 through the data calculation processing unit 12.

While the above-described accident record information maintains a buffer for a predetermined time, it is preferable that data for a predetermined time before and after the time when the accident occurs is stored based on the accident occurrence time.

The accident record information stored in the memory unit 13 of the accident record module 10 is transmitted to and analyzed by the accident analysis module 20 by communication between the data output processor 14 and the data input processor 21. It can use wired and wireless communication interfaces such as CDMA and USB.

However, the core of the present invention is to eliminate the possibility of forgery in the process of transmitting the accident record information from the accident record module 10 to the accident analysis module 20. Therefore, the memory unit 13 of the accident recording module 10 is preferably designed to be sealed to be passively accessible from the outside. In addition, the accident record information is preferably transmitted to the accident analysis module 20 by a wireless communication method when a vehicle accident occurs.

The storage data according to the present invention is classified into essential storage data and selective storage data, which are as follows.

Required storage data item Saved item unit Precision resolution Data measurement range Storage time (sec) Save cycle (Hz) Minimum Maximum value Motor Movement Information x-axis speed change km / h ± 5% One -100 100 0 ~ 0.25 100 y-axis speed change km / h ± 5% One -100 100 0-0.25 100 Car operation information Vehicle speed km / h ± 1 One 0 200 -5 to 0 2 Throttle Position
% ± 5 One 0 100 -5 to 0 2 brake on / off -5 to 0 2 Safety belt wearing (driver's seat) Wear / non-wear -One

Saved data item Saved item
unit
Precision
resolution
Data measurement range Storage time
(sec) Storage cycle
(Hz) Minimum Maximum value

car
Exercise Information


Acceleration Gx G ± 0.1 0.01 -50 50 -0.1 ~ 0.3 500 Acceleration Gy G ± 0.1 0.01 -50 50 -0.1 ~ 0.3 500 Acceleration Gz G ± 0.1 0.01 -50 50 -0.1 ~ 0.3 500 Speed deg / s ± 0.1 5 -635 630 -0.1 ~ 0.3 10 Roll speed deg / s ± 0.1 5 -635 630 -0.1 ~ 0.3 10 Impact N.s Multiple collisions satellite
system
Information
GPS Latitude / Longitude -8 ~ 5 One GPS driving direction -8 ~ 5 One GPS speed -8 ~ 5 One Accident Date




car
Operational Information






Gear only -8 ~ 5 One Steering Wheel Angle deg ± 5 5 -250 250 -8 ~ 5 2 Engine Torque % One 0 100 -8 ~ 5 One Ignition cycle cycle ± 1 One 0 60000 -One Seat belt (passenger seat) Wear / non-wear -One ESP / TCS Up / down -8 ~ 5 2 ABS Up / down -8 ~ 5 2 Direction indicator (right, left) on / off -8 ~ 5 2 headlight on / off -8 ~ 5 One Engine RPM rpm ± 100 100 0 -8 ~ 5 2 Door open warning light on / off -8 ~ 5 One Tire pressure warning light on / off -8 ~ 5 One Front airbag warning light on / off -One Airbag deployment time ms ± 2 One 0 250 Passenger seat airbag -8 ~ 5 One accident
Management Information Vehicle Identification Number Whether data recording is completed Video Information Front camera image -8 ~ 5 10

2 is a flowchart illustrating an operation of an apparatus for recording and analyzing an accident according to the present invention.

 The data signal processing unit 11 communicates with an external device such as a camera module or a GPS module when power on of the accident recording and analysis device is detected, and communicates with the engine controller, the transmission controller, and the chassis controller through can communication or K-line communication. It communicates with the vehicle body controller and collects various vehicle motion data.

In the process of collecting data as described above, information of the acceleration sensor is read (S201), and it is determined whether an impact amount equal to or greater than the set deceleration is detected (S202). The detection of the impact amount is calculated by multiplying the vehicle mass by the acceleration by setting the amount of impact generated when the vehicle collides with the fixed object at a predetermined speed, such as 10 km / h, as a reference value.

If the detected amount of shock is accelerated or exceeded in the determination of step S202, it is determined that an accident occurs, and the accident record information for a predetermined time before the occurrence of the accident and the accident record information for a predetermined time after the occurrence of the accident are processed and stored in the memory unit; S203), and transmits it to the accident analysis module 20 (S204).

The accident record analysis unit 22 analyzes the received accident record information (S205), and visually outputs it to the output device (S206).

3 is a flowchart of a process of obtaining information from the acceleration value measured by the acceleration sensor in the accident record analyzer 22.

Acceleration in three directions (Aax, Aay, Aaz) and magnetic acceleration in three directions (Max, May, Maz) are obtained from the acceleration sensor (S301). The obtained acceleration information is mixed with the vehicle behavior frequency, the body vibration frequency, and the noise frequency. Therefore, only the components of the body vibration frequency are extracted through appropriate filtering. 0-level correction and error correction are performed on the filtered values (S302).

The accident analysis performed in the accident analysis module has the following features.

It should have the function of analyzing the accident record information item and visualizing it in the form of graph or table. In the graph-type analysis information display method, the horizontal axis is the storage time, and the interval is the storage period of the accident record information. The vertical axis is preferably displayed the size or state of the items prescribed in the accident record information.

Based on the vehicle motion information, a speed change graph, a speed graph, and a position analysis graph can be provided. It is possible to provide a three-dimensional analysis graphically of driving conditions immediately before and after an accident through vehicle operation information measurement records such as vehicle speed, throttle position, brake, and seat belt wearing. Multi-dimensional stereoscopic analysis can be provided through video, audio, GPS recording, and various vehicle status records.

The present invention is not limited to the scope of the embodiments by the above embodiments, all having the technical spirit of the present invention can be seen to fall within the scope of the present invention, the present invention is the scope of the claims by the claims Note that is determined.

10: accident recording module, 11: data signal processing unit, 12: data operation processing unit, 13: memory unit, 14: data output processing unit, 20: accident analysis module, 21: data input processing unit, 22: accident record analysis unit, 23: Analysis information output unit, 24: drive base unit, 30: output device

Claims (3)

In the vehicle accident recording and analysis device comprising an accident recording module 10 and an accident analysis module 20,
The accident recording module 10 includes an acceleration sensor that acquires a 3-axis acceleration value, a three-axis magnetic sensor that can measure the attitude and position of the vehicle, and an external image. Accident record information acquired by the camera module, the acceleration sensor, the two-axis magnetic sensor and the camera module, and vehicle operation information acquired through communication with the ECU of the vehicle as data of a format used in the accident record module 10. The data signal processor 11 for processing, the memory 13 for storing the processed data, and the data output processor 14 for transmitting the processed data stored in the memory 13 to the accident analysis module 20. And a data operation processing unit 12 for storing the processed data in the memory unit 13 and controlling the stored data to be transmitted to the accident analysis module 20.
The accident analysis module 20 converts the transmitted data into an electronic document file and the data input processing unit 21 which receives data from the accident recording module 10, and records an accident by extracting and analyzing collision information from the data. Analysis unit 22, and analysis information output unit 23 for visualizing and outputting the analysis of the accident record analysis unit 22,
Vehicle accident record and analysis device. The method according to claim 1,
The memory unit 13 is provided to be forged or modulated with respect to externally stored data,
Vehicle accident record and analysis device. The method according to claim 1,
The accident recording module 10 further includes a GPS module and a timer,
The accident record information further includes location coordinate information obtained from the GPS module and date and time information obtained from the timer.
Vehicle accident record and analysis device.

Images