KR102029456B1 - A Digital Tachograph - Google Patents

Abstract

The present invention relates to a digital tachograph that is installed in a commercial or transport vehicle, and more specifically, even if no separate e-call (Emergency Call) terminal is installed, the minimum accident information data based on driving information secured while driving the vehicle. It relates to a digital driving recorder capable of generating an e-call service.

Description

e-call complex function tachograph {A Digital Tachograph}

The present invention relates to a digital tachograph installed in a commercial or transport vehicle, and more specifically, e-call service based on vehicle information secured when driving a vehicle even without installing a separate e-call (Emergency Call) terminal. A possible digital driving record apparatus is provided.

Currently, in developed countries centering on the EU, in the event of a car accident, it automatically detects whether an accident has occurred and saves the vehicle at the Public Safety Answering Point (PSAP) in order to save valuable lives within the Golden Time. Research on the e-Call terminal that informs by making an accident message including the accident location of the data message form,

Recently, e-Call terminals have been mandatory for small cars since March 2018, and in Russia, mandatory installation has been carried out in small cars.

Therefore, Korea is jointly pursuing R & D in order to decide the introduction of vehicle ICT-based emergency rescue system and to develop relevant standards and necessary technologies and to early settlement of related industries. It aims to equip the interlocking e-Call terminal.

However, e-Call terminals and vehicle status monitoring (VSM) terminals can be installed separately only for passenger cars or small commercial vehicles.In case of transportation or commercial vehicles such as medium and large vans, buses and taxis, the mandatory installation is already required inside the vehicle. Digital tachographs classified as are installed.

Therefore, in the case of a conventional commercial or transportation vehicle, the e-call terminal and the vehicle status monitoring (VSM) terminal must be separately installed, which can be economically burdened for vehicle manufacturers and consumers. The problem is that Korea's huge handset subsidies must be paid.

KR 10-2012-0050023 A KR 10-2015-0137555 A KR 10-1498367 B1

Therefore, the present invention does not need to install an e-Call terminal separately for commercial or transportation vehicles,

By using the existing digital tachograph to enable the e-Call service is to enable the combined use of one digital tachograph.

To this end, the present invention. In addition to being able to collect and record the driving information of the vehicle in real time, and to send and receive it in real time to the control center, the digital driving recorder is classified as mandatory

By automatically detecting and judging vehicle accidents and generating minimum accident information data (MSD), it is possible to send and receive to the control center or emergency rescue center (PSAP),

One digital tachograph is configured to enable e-Call service.

Therefore, the present invention does not need to have an e-call terminal separately because a digital tachograph installed in a commercial or transportation vehicle to secure driving information in real time is possible to use the e-call service. Came to be,

In particular, it is possible to minimize economic losses to the government or vehicle manufacturers and consumers.

In addition, the present invention can secure a number of advantages in terms of stability and management as the e-call function is also tested when acquiring the data of the digital tachograph at regular intervals.

1 is a conceptual diagram of a digital tachograph according to an embodiment of the present invention.
2 and 3 are perspective views of a digital tachograph according to an embodiment of the present invention.
4 and 5 are block diagrams of a digital tachograph according to an embodiment of the present invention.
6 is a state diagram used in the digital tachograph according to an embodiment of the present invention.
7 is a flowchart showing an accident determination process of the digital tachograph of the present invention.
8 is a table 1 showing criteria of accident judgment for each sensor of a digital tachograph according to an embodiment of the present invention.
9 is a table 2 showing criteria for determining a composite signal of a digital tachograph according to an embodiment of the present invention.
10 is a table 3 showing the format of the minimum accident information data (MSD) of the digital tachograph according to an embodiment of the present invention.

Hereinafter, specific details for carrying out the present invention will be described in detail with reference to the accompanying drawings.

1 is a brief view showing the overall configuration and concept of a digital tachograph according to an embodiment of the present invention, Figures 2 and 3 are perspective views showing the appearance of a digital tachograph according to an embodiment of the present invention, 5 is a block diagram showing the overall configuration of a digital tachograph according to an embodiment of the present invention, Figure 6 is a state diagram used in the digital tachograph according to an embodiment of the present invention.

Referring to this, the present invention relates to a digital driving recorder (3) installed in a transportation or commercial vehicle (hereinafter referred to as a vehicle) to collect and record driving information in real time.

In particular, when the control center (1) can transmit and receive real-time driving information, and detects and judges a vehicle accident, the emergency rescue center (2) has the minimum accident information data in the form of a message containing the accident location and the contents of the vehicle (hereinafter, Create and send incident data, or MSD messages, or MSD information).

At this time, the digital tachograph (3) is mandatory to be installed in each commercial or transportation vehicle such as a medium-large truck, bus or taxi, and the control center (1) secures the driving information of each vehicle periodically to read the driving record of the vehicle. The emergency rescue center 2 reads the minimum accident information data transmitted from the digital tachograph to provide an emergency service.

For reference, the main body 10 of the digital tachograph 3 has a structure in which the upper case 11 and the lower case 12 having an inner space are assembled or disassembled while being engaged with each other.

Inside, separate control boards 20 and wireless communication boards 40 are separately mounted on the upper and lower sides so that they can be used as digital tachographs or digital tachographs that can be serviced as needed. .

At this time, the main body 10 is equipped with a vehicle I / O interface (speed, RPM, CAN, brakes, seat belts, other signals) in order to be linked with the vehicle, as well as a communication module interface (transmit, receive) connected to the wireless communication board. , Hard reset, etc.) to collect and record the driving information of the vehicle in real time, and to detect and judge the vehicle accident based on this, generate the corresponding MSD message, and send it to the emergency recovery center (PSAP) or the management center. Install the composite control board 20 to instruct to transmit.

In addition, the main body 10 has a wireless communication module 41 for accessing a mobile communication network such as GSM / UMTS or LTE family, or a portable Internet network such as WAVE, Wifi, Wimax, and is connected to the composite control board. It comprises a wireless communication board 40 for transmitting a message to the emergency rescue center (2) or management center (1).

In addition, the front panel 13 mounted on the front of the upper case 11 and the lower case 12 in a state of being connected to a DTG Control Board or a Communication Board on a front surface of the main body 10. Is installed,

The front panel 13 includes a user menu selection button unit 16 consisting of a plurality of buttons along with an LCD window 14 through which specific menus or specific information are exposed according to collected driving information or button manipulation, and an accident occurrence fact. And a SOS button unit 19 for notification.

At this time, the front panel 13 is made in a modular state according to the embodiment, and the front panel 13 can be easily installed around the dashboard or the driver's seat by being connected to the main body and wired or wirelessly.

In addition, the SOS button unit 19 installed on the front panel is covered with a transparent cap 17 on the front surface, and the SOS button located inside only when the transparent cap 17 is rotated upward or broken ( 18) can be pressed to notify the emergency rescue center (2) or the management center (1).

For reference, the composite control board 20 includes a 2-axis acceleration sensor 22, a GNSS module 23, a compass sensor / gyro sensor 24, an RTC 25, and a 3-axis acceleration sensor around the controller 21. It includes a built-in three-axis gyroscope sensor 26, CAN transceiver 27, the vehicle I / O interface 28, the communication module interface 29 and the front interface 30,

Receives vehicle speed, RPM, brake status, and other signals in real time from a running vehicle through the vehicle's sensor signals or vehicle I / O interface 28, and via its own board GNSS (or GPS) module 23 Collect the vehicle latitude and longitude position, azimuth, time information, longitudinal and transverse acceleration information in real time and securely store in the internal storage device 31,

After completing the vehicle driving, the auxiliary storage device mounted on the USB port 15 is submitted or the driving information downloaded to the smart phone or the tablet PC or the notebook through the short range communication module is transmitted to the remote control center 1.

In this case, the composite control board 20 may automatically or manually detect and determine an accident of the vehicle based on the collected vehicle information. In particular, when determining that the accident is the minimum accident information data (MSD: Minimal Set of Data) Generated and sent to the Emergency Safety Center (PSAP: Public Safety Answering Point) through the wireless communication module 41 to perform a rescue request,

In some cases, when the accident occurs, the operation information recorded in the management center 1 may be transmitted to be used as a basis for screening the correct accident judgment and the time and expense ratio.

For reference, FIG. 7 illustrates an accident determination process according to an embodiment of the present invention, FIG. 8 illustrates criteria of accident determination for each sensor, FIG. 9 illustrates criteria for determining a complex signal, and FIG. 10 illustrates minimal accidents. Shows the format of the information data (MSD).

Referring to this, the composite control board 20 detects whether the "SOS button" 18 of the front panel 13 is pressed by the driver.

At this time, if the "SOS button" (18) is pressed, proceed with the "process to distinguish whether the manual e-Call or test e-Call" (S100), if the "SOS button" is not pressed "automatic judgment judgment Process ”. (S120)

For reference, “Process to distinguish whether it is a manual e-Call or a test e-Call” checks whether the “SOS button” has been pressed for more than the set time (eg 5 seconds), and if it is pressed for less than the set time, it is the minimum accident information data. Create (MSD) and send it to the Emergency Rescue Center (PSAP),

If it is pressed for more than the set time (5 seconds) and is in the standby state for a certain time (for example, 10 seconds) and presses the “SOS button” again, it will be reset and terminated (S110). At this time, the “SOS button” will not be pressed again. If not, a test minimum accident information data (MSD) is generated and instructed to transmit to the emergency recovery center (PSAP) or management center (1).

For reference, the "automatic accident determination process" is the first to check the high / low signal or the CAN message to determine whether the airbag is deployed in the vehicle, and if the airbag is deployed (high signal), the minimum Instructs to generate and transmit the accident information data (MSD) (S130)

If the CAN message that the airbag is deployed is not detected, if the Z value of the three-axis acceleration sensor is compared with the threshold value, it is determined that the vehicle is overturned and generates minimal accident information data (S140).

At this time, if the Z value is less than the threshold value (if the vehicle is not rolled over), if the value of the gyroscope sensor is compared with the threshold value, it is determined that it is spin (Spin) to generate the minimum accident information data (MSD), (S150 )

If the value of the gyroscope sensor is less than or equal to the threshold value (if not spun), if the acceleration X, Y, X + Y values of the vehicle are exceeded by comparing with the respective threshold values, it is determined to be a collision accident and the minimum accident information data is determined. (S160)

At this time, if the acceleration X, Y, X + Y value of the vehicle is below the threshold value (non-collision accident), the composite signal is compared with the threshold value to determine whether an accident occurs,

The composite signal determines whether or not an accident is determined by determining various information such as vehicle speed, RPM, ADAS data, brake signal, azimuth, acceleration, and time information together (S170).

In other words, if the vehicle is decelerated at 7.5km / h to 40km / h, it is judged to have suddenly decelerated, and if it has decelerated to 7.5km / h to 40km / h, it is considered to have stopped suddenly, and it is judged to have stopped suddenly for two seconds at a speed of 15km / h or more. If you turn left or right (60-120 degrees) while you turn right or left sharply, if you turn left or right (160-180 degrees) for 3 seconds at a speed of 15km / h or more Judging by a U-turn, and accelerating at a speed of 11 km / h or more and changing the lane to the left or right (30 to 60 degrees), it is determined to be ahead. At a speed of 30 km / h or more, the driving direction is left or right. In the case of acceleration and deceleration to ± 5km / h while changing lanes by more than 15 to 30 degrees, it is determined that the course has been changed rapidly.

In addition, the minimum accident information data (MSD) is composed of a header (Header), payload (Trail), and the trail (Trail) based on the MSD format set by international and Korean standards,

The header consists of a 1-byte device ID, a 2-byte data length and a 2-byte command for event response or request, together with an identifier indicating the start of a 1-byte MSD message.

The payload is an accident occurrence time consisting of 1 byte of MSD version, 1 byte of MSD sequence, and 6 bytes of year / month / day / hour / minute / second, 1 byte of automatic or manual control type, Accident location including 1 byte vehicle type, 17 byte vehicle number, latitude and longitude value, 2 byte vehicle azimuth angle, 2 previous vehicle positions, number of occupants or passengers, gasoline / Vehicle fuel information such as diesel,

The trail includes a checksum item for error detection of 1 byte and an identifier indicating the end of the MSD message.

At this time, the payload is an additional 1 byte of airbag status (deployment status) and 1 byte so as to accurately determine the vehicle accident contents and accident level such as overturn, spin, collision, etc. in the emergency rescue center (PSAP). You can check the seatbelt status (wearing status) and the door status (openness) of the system, acceleration of 2 bytes of X, Y axis and tracking start time of 6 bytes (year / month / day / hour / minute / second), And a 1-byte vehicle speed, a 2-byte vehicle RPM, a 1-byte brake state (operation), and 609-byte section information data.

In this case, the 609 byte section information data is based on the TTC value of the ADAS system in the vehicle, the current vehicle speed change rate, and whether the brake is used in the TTC section. Until is information buffered for a certain time.

In addition, the wireless communication board 40 includes a wireless communication module 41, and the MSD message generated by the composite control board 20 in the Emergency Safety Center (PSAP: Public Safety Answering Point) through a mobile communication network or a portable Internet network. To send or request

In addition, according to an exemplary embodiment, the driving information recorded in the storage device 31 is transmitted to the management center 1 according to the operation of the menu selection button unit 16.

At this time, the wireless communication board 40 transmits the MSD message to the emergency rescue center when an accident occurs, and simultaneously transmits the driving information of the vehicle recorded in real time to the management center 1 to cover the correct accident judgment and the time and death ratio. It can also be used as a basis for this.

In addition, the wireless communication board 40 includes an interface such as a power supply, a transmission / reception port, a reset port, and the like so that other modules that can be independently operated can be easily used. Ports 42, 43, 44, etc., to which external microphones and speakers are connected, are provided.

In addition, the wireless communication board 40 has various types of wireless communication services, and a case of applying different communication systems according to a system and an application environment is frequently used, so that the wireless communication board 40 can be easily replaced and removed / mounted, and the communication module interface 29 is provided. Connect with the composite control board 20 through.

Therefore, in the present invention, a digital tachograph installed in a commercial or transport vehicle to record driving information in real time realizes an e-call terminal function, and thus it is necessary to separately provide an e-call terminal or a vehicle status monitoring (VSM) terminal. This will make the most of the space inside the vehicle and minimize the financial burden on government, vehicle manufacturers and consumers.

In addition, in the present invention, when the data of the digital tachograph is acquired at regular intervals, the e-call function is also tested to secure many advantages in terms of stability and management.

1: Management center 2: Emergency rescue center
3: digital tachograph 10: body
11: upper case 12: lower case
13: Front panel 14: LCD window
15: USB port 16: Menu selection button
17: Perspective cap 18: SOS button
19: SOS button part 20: Composite control board
21: control unit 22: 2-axis acceleration sensor
23: GNSS module 24: compass sensor
25: RTC 26: 3-axis gyroscope sensor
27: CAN Transceiver 28: Vehicle I / O Interface
29: Communication module interface 30: Front interface
31: Storage device 40: Wireless communication board
41: wireless communication module 42: microphone port
43: Speaker port 44: Reservation port

Claims (16)

The control center (1), which periodically acquires driving information of each vehicle and reads the driving information of each vehicle, and an emergency rescue center for providing emergency services by reading minimum accident information data (MSD) 2) and a digital tachograph 3 which is mandatoryly mounted on a commercial or transportation vehicle and collects and records driving information of the vehicle in real time,
The digital driving recorder 3 includes minimum accident information data (MSD) consisting of a header, a payload, and a trail based on driving information collected and recorded in real time when a vehicle accident is detected. Create a,
The digital tachograph 3 is a header having an identifier indicating the start of an MSD message of 1 byte, a device ID of 1 byte, a length of 2 bytes of data, and a command item of 2 bytes for an event response or request. Payload consists of 1 byte MSD version, 1 byte MSD sequence, 6 byte accident time, 1 byte control type, 1 byte vehicle type, 17 byte vehicle number, latitude and longitude value It consists of accident location, 2 byte vehicle azimuth angle, 2 previous vehicle positions, number of occupants and vehicle fuel information.Trail is an identifier item indicating the end of checksum and MSD message for error detection of 1 byte. By generating a minimum accident information data (MSD: Minimal Set of Data) to the Emergency Rescue Center (PSAP),
E-Call multi-function digital tachograph, characterized in that the e-Call service is implemented as one digital tachograph even without a separate e-Call terminal. The method of claim 1,
The digital tachograph 3 not only has a vehicle I / O interface 28 so as to be interlocked with the vehicle, but also has a communication module interface 29 connected to a wireless communication board to collect driving information of the vehicle in real time. The composite control board 20 not only records, but also detects and determines whether a vehicle accident is generated based on this, and generates a minimum accident information data (MSD) corresponding thereto and transmits it to the emergency rescue center (2). And a wireless communication module 41 for accessing a mobile communication network or a portable internet network, connected to the composite control board 20 and according to the instructions of the composite control board 20, the minimum accident information data (MSD: Minisum). Set of Data) connected to the wireless communication board 40 and the composite control board 20 or the wireless communication board 40 to transmit to the emergency rescue center (2) according to a button operation E-Call multifunction digital driving recorder comprising an LCD window 14 to which specific information is exposed, and a front panel 13 forming a SOS button unit 19 for notifying an accident occurrence. The method of claim 2,
The composite control board 20 includes a 2-axis acceleration sensor 22, a GNSS module 23, a compass sensor 24, an RTC 25, and a 3-axis acceleration sensor centering on the control unit 21. 3-axis gyroscope sensor 26, CAN transceiver 27, vehicle I / O interface 28, communication module interface 29 and the front interface 30,
Receives signals of the vehicle's speed, RPM, brake status, door status, airbag status, seat belt status from the vehicle in real time via the vehicle's sensors or the vehicle I / O interface 28, and the GNSS or GPS module 23 E-Call multifunction digital recorder, characterized in that the vehicle collects the latitude and longitude position, azimuth, time information, longitudinal and transverse acceleration information in real time, and securely records and stores in the internal storage device (31). delete The method of claim 1,
The digital driving recorder (3) is an e-Call combined function digital driving recorder, characterized in that to record the transmission of the operation information recorded in the internal storage device 31 to the remote control center (1) in the event of an accident. delete The method of claim 1,
The payload is an additional 1 byte airbag state, 1 byte seat belt state, so that the emergency recovery center (PSAP) can accurately determine the vehicle accident contents and accident level of overturn, spin, and collision, E-Call multi-function digital tachograph, characterized in that it further comprises a 1-byte door open status. The method of claim 1,
Payload is an additional 2 bytes of X and Y axis acceleration and 6 bytes of tracking start to accurately determine vehicle accident contents and accident level of rollover, spin, and collision in the PSA. E-Call multifunction digital operation further comprising time (year / month / day / hour / minute / second), vehicle speed of 1 byte, vehicle RPM of 2 byte, and brake state of 1 byte recorder. The method of claim 8,
The payload is made by further including interval information data of 609 bytes,
The section information data is based on the TTC value of the ADAS system, the current vehicle speed change rate, and whether the brake is used in the TTC section to determine whether the vehicle collided with the preceding vehicle for a predetermined time from the vehicle position to the brake state. E-Call multi-function digital odometer, characterized in that the buffered driving information. A control center (1) that periodically acquires driving information of each vehicle to read the driving information of the vehicle, and an emergency rescue center that provides emergency services by reading minimum accident information data (MSD) (2) ), And a digital tachograph (3) mandatoryly mounted on a commercial or transportation vehicle to collect and record driving information of the vehicle in real time,
The digital driving recorder 3 not only collects and records the driving information of the vehicle in real time, but also transmits the minimum accident information data (MSD: Miniset Set of Data) generated at the time of the vehicle accident to the emergency rescue center 2 based on this. Directed to the composite control board 20 and the composite control board 20, according to the instructions of the composite control board 20, the minimum accident information data (MSD: Minimum Set of Data) to the emergency rescue center (2) Connected to the wireless communication board 40 to transmit, the composite control board 20 or the wireless communication board 40, the LCD window 14 to expose a specific menu or specific information according to a button operation, and the fact that an accident occurred A front panel 13 forming a SOS button 18 for notification,
When the SOS button 18 is pressed, the composite control board 20 proceeds with the "process for distinguishing whether it is a manual e-Call or a test e-Call", and when the SOS button 18 is not pressed, E-Call multi-function digital tachograph, characterized by the "automatic accident determination process". The method of claim 10,
The composite control board 20 checks whether the SOS button is pressed for a predetermined time or more when the process of distinguishing whether the manual e-Call or the test e-Call is performed. Instructs to create and transmit to the emergency rescue center (2),
If it is pressed for more than the set time and is in the standby state for a certain time, if it is pressed again, it is reset and terminated.
In this case, if the SOS button is not pressed again, the e-call all-in-one digital driving recorder, characterized in that the instruction to generate the minimum accident information data for testing and to transmit to the emergency rescue center (2) or management center (1). The method of claim 10,
The composite control board 20 may cause an accident of a vehicle through a high / low signal or a CAN (Controller Area Network) message that determines whether the airbag of the vehicle is deployed during the “automatic accident determination process”. E-Call multi-function digital driving recorder, characterized in that it automatically detects whether to generate the minimum accident information data, and instructs to transmit to the emergency rescue center (2). The method of claim 12,
The composite control board 20 determines that the vehicle is overturned when the Z value of the 3-axis gyroscope sensor 26 is exceeded when the CAN message indicating that the airbag is deployed is exceeded, and the threshold value is exceeded. E-Call multi-function digital recorder, characterized in that to generate the minimum accident information data, and to transmit to the emergency rescue center (2). The method of claim 13,
When the composite control board 20 is less than or equal to the threshold of the three-axis gyroscope sensor 26, the control board 20 compares the value of the gyro sensor 24 with the threshold and determines that the vehicle is spin when exceeded, and the minimum accident information. E-Call multi-function digital tachograph, characterized in that to generate data and instruct to transmit to the emergency rescue center (2). The method of claim 14,
When the value of the gyro sensor 24 is less than or equal to the threshold value, the composite control board 20 may have exceeded the acceleration X, Y, X + Y values of the vehicle through the two-axis acceleration sensor 22 compared with the respective threshold values. When it is determined that the collision accident, and generates the minimum accident information data and instructed to transmit to the emergency rescue center (2). The method of claim 15,
The composite control board 20, when the X, Y, X + Y value through the two-axis acceleration sensor 22 is less than the threshold, by comparing the composite signal with the threshold to determine the occurrence of an accident,
The composite signal is based on vehicle speed, RPM, ADAS data, brake signal, azimuth, acceleration, time information,
If the vehicle is decelerated at 7.5km / h to 40km / h, it is judged to have suddenly decelerated.If it has decelerated to 7.5km / h to 40km / h, it is considered to have stopped suddenly and for 2 seconds at a speed of 15km / h or more If it turns left or right (60 to 120 degrees), it is judged to turn left or right sharply, and if it turns to the left or right (160 to 180 degrees) for 3 seconds at a speed of 15 km / h or more, If it is accelerated at a speed of 11km / h or more and the lane is changed to the left or right (30 to 60 degrees), it is determined to be ahead, and the moving direction is left or right at a speed of 30km / h or more. E-Call multi-function digital tachograph, characterized in that it is determined that the change to the radical path in the case of acceleration / deceleration to ± 5km / h while changing the lane over ~ 30 degrees.

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