Device and method for detecting an emergency situation for a vehicle

Abstract

Device for detecting an emergency situation for a vehicle, comprising: a sensor unit (812) formed with one or more of a speed sensor (21), a wheel sensor (22), an acceleration sensor (23), a lateral acceleration sensor (24), a yaw rate sensor (25), and an inclination sensor (26); an emergency situation determination unit (11, 814) that receives a signal from the sensor unit (812) and determines whether a first vehicle in which the device is installed is in an emergency situation; a control device (13) configured to receive a signal from a second vehicle, which is a vehicle in a vicinity of the first vehicle, and to determine whether the second vehicle is in an emergency situation, and, when an emergency situation message is received from the second vehicle, to perform a process of verifying the emergency situation message from the second vehicle; and a communication unit (15, 115, 816) configured to generate an emergency situation message representing an emergency situation of the first vehicle and a release message representing a release of the emergency situation according to a determination result of the emergency situation determination unit (11, 814), to transmit the emergency situation message and the release message of the first vehicle and / or, when an emergency situation message from the second vehicle has been received and verified by the control device (13), the verified emergency situation message from the second vehicle to an external emergency situation dissemination device (820), and to enable the emergency situation dissemination device (820) to externally disseminate an emergency dissemination state of the first vehicle in which the emergency situation of the second vehicle is observed and it is determined that an abnormal state of the second vehicle is to be disseminated,to spread outwards.,

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention

[0001] The present invention relates to an apparatus and a method for detecting an emergency situation for a vehicle, and more particularly to an apparatus and a method for detecting an emergency situation for a vehicle in which, when an emergency situation for the vehicle is detected, the emergency situation is verified within a predetermined standby time and notified to a roadside unit, a vehicle in the vicinity, a rescue center and the like, thereby detecting the emergency situation for the vehicle more accurately and rescuing the vehicle more quickly. 2. Description of the state of the art

[0002] With the rapid proliferation of vehicles in the modern world, millions of people die or are injured in traffic accidents every year. Accordingly, various vehicle technologies have been developed to reduce the casualties and economic losses caused by traffic accidents. Such technologies include automatic cruise control (ACC) technology, lane change assistance technology, lane departure warning technology, parking assistance technology, and the like.

[0003] However, since these technologies use a sensor, camera, or the like installed in a vehicle, their detection ranges and effects are limited. Accordingly, technologies have been developed to detect a range of driving environments. One of these technologies is V2X technology. V2X, short for "Vehicle to Everything," includes vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I), and vehicle-to-nomadic device (V2N).

[0004] Here, roadside units (RSUs) installed along a road are used as an infrastructure to communicate with a vehicle. A vehicle communicates with roadside units installed along a road to establish a network and receives various types of information from the roadside units, thereby ensuring traffic safety and obtaining information such as guidance or various types of multimedia content to prevent traffic jams.

[0005] In order to rescue a vehicle quickly when the vehicle is in danger of an accident or in an emergency situation, it is necessary to accurately grasp the emergency situation for the vehicle and communicate the emergency situation for the vehicle to a rescue center or a vehicle in the surrounding area by expanding functions of the roadside units.

[0006] For example, the publication DE 10 2008 023 281 A1 refers to an emergency call device for direct emergency call transmission, in which a control unit selects a receiver from a stored set of receivers for transmitting an emergency call in a vehicle. The selected receiver, which directly corresponds to the organization that will provide immediate assistance in response to the emergency call, is contacted directly.

[0007] Another example of an emergency call system for vehicles is described in the document DE 199 17 207 A1. The emergency call system described therein sends an emergency call regardless of damage to the on-board electronics. This means that if sensors detect a critical driving situation, even before an actual accident occurs, it sends a message containing at least the geographical position of the vehicle.

[0008] Further examples of relevant emergency call systems are described in the documents US 2013 / 0325940 A1, EP 2 543 552 A1 and DE 10 2006 031 240 A1. SUMMARY OF THE INVENTION

[0009] The present invention provides a vehicle emergency situation detection system that can identify whether a vehicle is in an emergency situation and transmit it to the outside through a roadside unit, thereby enabling the vehicle to be rescued quickly.

[0010] In addition, the present invention provides a vehicle emergency situation detection system that can verify an emergency situation for a vehicle within a predetermined standby time and then forward the emergency situation for the vehicle when it is determined that the vehicle is in the emergency situation, whereby the emergency situation for the vehicle can be detected more accurately.

[0011] According to one aspect of the present invention, an emergency situation detection device for a vehicle includes: a sensor unit formed with one or more of a speed sensor, a wheel sensor, an acceleration sensor, a lateral acceleration sensor, a yaw rate sensor, and a tilt sensor; an emergency situation determination unit that receives a signal from the sensor unit and determines whether a first vehicle in which the device is installed is in an emergency situation; a control device configured to receive a signal from a second vehicle, which is a vehicle in a vicinity of the first vehicle, and determine whether the second vehicle is in an emergency situation, and, when an emergency situation message is received from the second vehicle, perform a process of verifying the emergency situation message from the second vehicle;and a communication unit configured to generate an emergency situation message representing the emergency situation for the first vehicle and a release message representing the release of the emergency situation according to the determination result of the emergency situation determination unit, to transmit the emergency situation message and the release message of the first vehicle and / or, when an emergency situation message from the second vehicle has been received and verified by the control device, the verified emergency situation message from the second vehicle to an external emergency situation relay device, and to enable the emergency situation relay device to externally broadcast an emergency relay state of the first vehicle in which an emergency situation of the second vehicle is observed and it is determined that an abnormal state of the second vehicle is to be broadcast.

[0012] According to another aspect of the present invention, a method for detecting an emergency situation for a vehicle includes: a signal receiving step of receiving a signal from a sensor unit of a first vehicle formed with one or more of a speed sensor, a wheel sensor, an acceleration sensor, a lateral acceleration sensor, a yaw rate sensor, and a tilt sensor, and an emergency situation message from a second vehicle that is a vehicle in a vicinity of the first vehicle; an emergency situation determining step of verifying the emergency situation message from the second vehicle and determining whether at least one of the first and second vehicles is in an emergency situation based on the signal from the sensor unit and the verified emergency situation message from the second vehicle;and a message transmission step of generating an emergency situation message representing the emergency situation of the first vehicle and a release message representing the release of the emergency situation according to the determination result of an emergency situation determination unit, transmitting the emergency situation message and the release message of the first vehicle and / or the verified emergency situation message of the second vehicle to an external emergency situation relay device, and enabling the emergency situation relay device to externally broadcast an emergency relay state of the first vehicle in which an emergency situation of the second vehicle is observed and it is determined that an abnormal state of the second vehicle is to be broadcast.

[0013] In the vehicle emergency situation detection system according to the present invention, when information that a vehicle is in an emergency situation is collected, the emergency situation is verified in a predetermined standby time and notified to a rescue center, a roadside unit, a vehicle in the vicinity, and the like, whereby it is possible to quickly notify the emergency situation for the vehicle to the rescue center and provide accurate information, thereby achieving effective rescue. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings in which: Fig. 1 is a block diagram illustrating a configuration of a vehicle emergency situation detection system according to an embodiment of the present invention; Fig. 2 is a block diagram illustrating an embodiment of a vehicle having an emergency situation detecting device according to Fig. 1 contains; Fig. 3 is a block diagram showing an embodiment of the roadside unit according to Fig. 1 illustrated; Fig. 4 is a flowchart illustrating a process of detecting an emergency situation for a vehicle by the vehicle emergency situation detecting system according to the embodiment of the present invention; Fig. 5 is a flowchart illustrating a process of processing an emergency situation message by a surrounding vehicle and a roadside unit receiving the emergency situation message in the vehicle emergency situation detection system according to the embodiment of the present invention; Fig. 6 is a block diagram illustrating a configuration of a vehicle emergency situation detection system according to another embodiment of the present invention; Fig. 7 is a flowchart illustrating a process of detecting and forwarding the emergency situation for a vehicle by the vehicle emergency condition detecting system according to the other embodiment of the present invention; and Fig. 8 is a diagram of an emergency situation detection system according to the present invention, shown in a different form. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] Hereinafter, some embodiments of the present invention will be described in detail with reference to the accompanying illustrative drawings. In the following description, the same components are denoted by the same reference numerals even though they are shown in different drawings. Furthermore, in the following description of the present invention, a detailed description of known functions and configurations included herein will be omitted if it would impair the clarity of the subject matter of the present invention.

[0016] Additionally, terms such as first, second, A, B, (a), (b), or the like may be used herein when describing components of the present invention. These terms are used merely to distinguish one structural element from other structural elements, and a property, order, sequence, and the like of a corresponding structural element are not limited by the term. It should be noted that where the description states that the component is "connected," "coupled," or "joined" to another component, a third component may be "connected," "coupled," and "joined" between the first and second components, although the first component may be directly connected, coupled, or joined to the second component.

[0017] Fig. 1 is a block diagram illustrating a configuration of a vehicle emergency situation detection system according to an embodiment of the present invention, and Fig. 2 is a block diagram illustrating an embodiment of a vehicle having an emergency situation detecting device according to Fig. 1 contains.

[0018] In the vehicle emergency situation detection system 1 according to the embodiment of the present invention, when an emergency situation detection device 10 installed in the vehicle detects an emergency situation for the vehicle and generates an emergency situation message, a vehicle in the vicinity and a roadside unit that receive the emergency situation message may have a predetermined standby time and determine that the vehicle is in an emergency situation to generate a rescue request for rescuing the vehicle if a release message for the emergency situation is not received during the standby time.

[0019] The vehicle emergency situation detection system 1 may include an emergency situation detection device 10 installed in a vehicle to monitor an emergency situation for the vehicle, and a roadside unit 30 installed on a road side to communicate with the emergency situation detection device 10 and request rescue from a rescue center 50 when the vehicle is verified to be in an emergency situation.

[0020] The emergency situation detection device 10 is installed in each vehicle and performs two main functions. One is a function of monitoring an emergency situation of a driver's vehicle and broadcasting information about the emergency situation to the surrounding area, and the other is a function of receiving information about the emergency situation from a surrounding vehicle, verifying the corresponding information, and broadcasting the verified information to the surrounding area.

[0021] For this purpose, the emergency situation detection device 10 may include an emergency situation determination unit 11 that determines an emergency situation for a vehicle, a communication unit 15 for communicating with the outside, and a control device 13 that controls the transmission and reception of information according to a determination of an emergency situation.

[0022] The emergency situation determination unit 11 may receive detected information from various types of sensors and devices installed in the vehicle and determine whether the vehicle is in an emergency situation. The emergency situation determination unit 11 may be connected to an on-board diagnostic (OBD) terminal using a control area network (CAN) communication line to receive signals detected by the various types of sensors and devices. Here, the emergency situation determination unit 11 may collect information using, for example, a speed sensor 21, a wheel sensor 22, an acceleration sensor 23, a lateral acceleration sensor 24, a yaw rate sensor 25, a rollover detection sensor 26, and the like, and may also collect information from various other sensors or devices in addition to the aforementioned sensors.

[0023] The acceleration sensor 23 can detect a change in the vehicle's traveling speed, and the emergency situation determination unit 11 can determine that the vehicle is in an emergency situation when a change in acceleration detected by the acceleration sensor 23 exceeds a predetermined threshold, that is, when the acceleration changes rapidly beyond the physical limit of the vehicle. For example, when the vehicle performs emergency braking to avoid an emergency situation or is stopped due to a collision with another vehicle, the acceleration is rapidly reduced, and therefore, it is necessary to determine the rapid change in acceleration as an emergency situation.

[0024] The lateral acceleration sensor 24 can detect acceleration generated in a lateral direction during vehicle travel, and the vehicle may overturn or drift out of a lane if the lateral acceleration increases sharply. Accordingly, if the lateral acceleration increases rapidly to an extent sufficient to cause the vehicle to overturn, the emergency situation determination unit 11 can determine that the vehicle is in an emergency situation.

[0025] The yaw rate sensor 25 can detect the rotational force around a vertical axis of the vehicle while the vehicle is traveling. It can be determined that if the yaw rate value is above a predetermined value, the vehicle is rotating while skidding, and if the yaw rate value is unstable and fluctuates, the vehicle is uncontrollable. Accordingly, if the yaw rate value is above a predetermined value or fluctuates, the emergency situation determination unit 11 can determine that the vehicle is in an emergency situation.

[0026] The rollover detection sensor 26 may be a tilt sensor. The rollover detection sensor 26 may detect a tilt of the vehicle, and it may detect the rollover of the vehicle together with the lateral acceleration sensor 24. If a tilt of the vehicle detected by the rollover detection sensor 26 is above a predetermined value, the emergency situation determination unit 11 may determine that the vehicle is likely to roll over or has overturned.

[0027] When the emergency situation determining unit 11 determines that the vehicle is in an emergency situation based on information supplied from the sensors and devices in this manner, the emergency situation determining unit 11 may determine the state of the vehicle by processing the information supplied from the sensors and devices as described above, or it may also determine the state of the vehicle depending on whether the information supplied from the sensors and devices is in mutual agreement.

[0028] For example, in cases where the vehicle overturns to one side while traveling obliquely on an inclined road, the vehicle speed detected by the speed sensor 21 is zero, but the acceleration sensor 23 detects acceleration. Furthermore, if the vehicle is a front-wheel drive vehicle, immediately after the vehicle overturns while traveling, the rear wheels do not rotate while the front wheels rotate. In these cases, the emergency situation determining unit 11 can determine that the vehicle is in an emergency situation because signals detected by the speed sensor 21 and the acceleration sensor 23 do not agree with each other, and drive signals of the front and rear wheels detected by the wheel sensor 22 do not agree with each other.

[0029] If it is determined that the vehicle is in an emergency situation, the emergency situation determination unit 11 can send the corresponding information to the control device 13. Furthermore, when values ​​detected by the sensors and devices return to a normal range, the emergency situation determination unit 11 can send information to the control device 13 to notify the control device 13 that the vehicle is not in an emergency situation.

[0030] The communication unit 15 can support communication between the driver's vehicle and the surrounding vehicle and communication between the driver's vehicle and the roadside unit 30, and it can use a radio communication scheme such as Wi-Fi, Wibro, etc. Alternatively, the communication unit 15 can also use a 5.8 GHz band of the dedicated short range communication (DSRC) scheme, which is highly accurate and has a high instantaneous communication speed.

[0031] Through the communication unit 15, the driver's vehicle can transmit signals generated by its emergency situation detection device 10 to a surrounding vehicle or the roadside unit 30, and can also receive signals transmitted from the surrounding vehicle or the roadside unit 30.

[0032] The control device 13 can perform a function of processing information generated by the driver's vehicle and sending the information to the outside, and can also perform a function of processing information received from the outside.

[0033] First, the function of the control device 13 for processing information generated from the driver's vehicle and sending the information to the outside will be described as follows.

[0034] The control device 13 may continuously monitor a signal supplied from the emergency situation determination unit 11, create an emergency situation message representing an emergency situation for the vehicle or a release message representing that an emergency situation is released according to a determination result of the emergency situation determination unit 11, and broadcast the created message to a vehicle in the vicinity and the roadside unit 30 through the communication unit 15.

[0035] That is, when the emergency situation determination unit 11 determines that the vehicle is in an emergency situation, the control device 13 can perform control to create an emergency situation message and transmit it through the communication unit 15, and when the emergency situation determination unit 11 determines that the emergency situation has ended, the control device 13 can perform control to create a release message and transmit it through the communication unit 15. It is apparent that the control device 13 can also broadcast all the information collected by the emergency situation determination unit 11, that is, information about a vehicle state collected by the sensors or devices, as well as the emergency situation message and the release message.

[0036] The emergency situation message and the release message can be a type of flag, and they can be represented as SystemFailureSuspectFlag and SystemFailureRecoveryFlag, respectively.

[0037] A message that the vehicle control device 13 uses when transmitting through the communication unit 15 to the outside (to a surrounding vehicle, a roadside unit, etc.) may be defined as a Basic Safety Message (BSM) predefined in a vehicle communication scheme.

[0038] The BSM may include a Part I message, which is always sent in each communication period, and a Part II message, which is optionally sent as needed. The Part I message may include: DSRmsg ID (1 byte), MsgCount (1 byte), Temporary ID (4 bytes), DSecond (2 bytes), Latitude / Longitude (4 bytes each), Altitude (2 bytes), Position Accuracy (4 bytes), Gear and Speed ​​(2 bytes), Heading (2 bytes), Steering Wheel Angle (1 byte), Acceleration Set 4-Way (7 bytes), Braking System State (2 bytes), Vehicle Size (3 bytes), and the like. And the Part II message may contain Vehicle Safety Extension and Vehicle Status messages.

[0039] An emergency situation message (SystemFailureSuspectFlag) and a release message (SystemFailureRecoveryFlag) used in the present invention may be sent outward (to a surrounding vehicle, a roadside unit, etc.) while included in the aforementioned Part II message.

[0040] The function of the control device 13 for processing information received from the outside is described as follows.

[0041] The control device 13 can receive a signal from a nearby vehicle and determine whether the nearby vehicle is in an emergency situation. When an emergency situation message is received from the nearby vehicle, the control device 13 performs a process of verifying the emergency situation messages.

[0042] The control device 13 may be on standby during a preset time period from the receipt of the emergency situation message to monitor whether an additional message is received from the relevant vehicle in the vicinity.

[0043] When a release message is received from the relevant vehicle in the vicinity within the standby time, the control device 13 may determine that the emergency situation for the relevant vehicle in the vicinity has been released or canceled.

[0044] On the other hand, if the emergency situation message is received again within the standby time, or if the control device is in a non-response state in which an additional message is not received, the control device 13 determines that the emergency situation is maintained for the relevant vehicle in the vicinity. In this case, since no additional message means that the relevant vehicle in the vicinity cannot create a message, the control device 13 can determine that the relevant vehicle in the vicinity is in an emergency situation.

[0045] If it is determined that the emergency situation of the surrounding vehicle is maintained, the control device 13 broadcasts the emergency situation message to the surrounding vehicle, which is received by the relevant vehicle in the surrounding vehicle. Accordingly, information notifying that the relevant vehicle in the surrounding vehicle is in the emergency situation can be sent to the roadside unit 30, another vehicle in the surrounding vehicle, and the rescue center 50. Here, the rescue center 50 refers to an institution such as 119, a fire station, a police station, etc., that can control a vehicle emergency situation.

[0046] Each emergency situation detection device 10 may have a unique number, and a vehicle can be identified using the unique number of the emergency situation detection device 10. The control device 13 transmits the unique number to the emergency situation detection device 10 along with the transmission of the emergency situation message and the release message. Accordingly, when the emergency situation message and the release message are received, the vehicle that sent the messages can be identified, and in particular, the rescue center 50 can easily identify the vehicle.

[0047] Fig. Figure 3 is a block diagram illustrating a configuration of the roadside unit according to Figure 1.

[0048] The roadside unit 30 may include: a wired communication unit 31 for communicating with another roadside unit 30 and the rescue center 50, a radio communication unit 33 for communicating with a vehicle, and a device control unit 35 that sends an emergency situation of the vehicle to the rescue center 50 through a verification process when an emergency situation message is received from an emergency situation detecting device 10 of the vehicle.

[0049] The wired communication unit 31 may be connected to a wired network to support communication with the other roadside unit 30 in the surrounding area and the rescue center 150 and to support communication based on a TCP / IP protocol.

[0050] The radio communication unit 33 supports radio communication with the emergency situation detection device 10 installed in the vehicle and uses the same communication scheme as the emergency situation detection device 10. Accordingly, the radio communication unit 33 can communicate with the emergency situation detection device 10 using the communication scheme of Wi-Fi, Wibro, and DSRC.

[0051] When an emergency situation message is received from the vehicle through the radio communication unit 33, the device control unit 35 may stand by for a preset period of time from the reception of the emergency situation message and may monitor whether an additional message is received from the corresponding vehicle.

[0052] When a release message is received from the corresponding vehicle within the standby time, the device control unit 35 can determine that the emergency situation of the corresponding vehicle has been released.

[0053] On the other hand, when the emergency situation message is received again within the standby time, or when an additional message is not received, the device control unit 35 determines that the emergency situation is maintained for the corresponding vehicle.

[0054] When it is determined that the emergency situation is maintained for the vehicle, the device control unit 35 transmits the emergency situation message received from the corresponding vehicle and the unique number of the emergency situation detection device 10 to the roadside unit 30 in the vicinity or to the rescue center 50.

[0055] Each roadside unit 30 has a unique ID, and when the roadside unit 30 sends the vehicle emergency situation message to the rescue center 50, the rescue center 50 can identify the location of the roadside unit 30 based on the ID of the roadside unit 30, thereby more quickly identifying the location of the vehicle in an emergency situation. A process of detecting and forwarding a vehicle state by the vehicle emergency situation detection system according to the embodiment of the present invention having such a configuration will be described with reference to Fig. 4 and Fig. 5 as described below.

[0056] Fig. 4 is a flowchart illustrating a process of detecting an emergency situation for a vehicle by the vehicle emergency situation detecting system according to the embodiment of the present invention.

[0057] When the vehicle starts traveling, each sensor and device detects the vehicle's traveling state, and the emergency situation determination unit 11 monitors information provided by each sensor and device and determines an emergency situation of the vehicle (S400). If the emergency situation determination unit 11 determines that the vehicle is in an emergency situation (S410), the control device 13 forms an emergency situation message (S420) and broadcasts the emergency situation message along with the unique number of the emergency situation detection device 10 (S430).

[0058] Thereafter, if the emergency situation determination unit 11 determines that the emergency situation has ended (S440), the control device 13 generates a release message and broadcasts the release message (S450 and S460). In cases where the emergency situation has not ended, if retransmission of the emergency situation message is possible (S470), the control device 13 resends the emergency situation message (S480). If the emergency situation detection device 10 fails, it is impossible to resend the emergency situation message.

[0059] Fig. 5 is a flowchart illustrating a process of processing an emergency situation message by a surrounding vehicle and a roadside unit receiving the emergency situation message in the vehicle emergency situation detection system according to the embodiment of the present invention.

[0060] When an emergency situation message is received from a vehicle (S500), the surrounding vehicle and the roadside unit 30 are on standby for a predetermined period of time (S510). If a release message is received within a predetermined period of time (S520), the surrounding vehicle and the roadside unit 30 determine that the vehicle's emergency situation has been released (S530). However, if the release message is not received within the predetermined period of time and the emergency situation message is received again or no message is received (S540), the surrounding vehicle and the roadside unit 30 determine that an abnormality exists in the vehicle that sent the emergency situation message (S550).

[0061] In cases where the roadside unit 30 receives the vehicle's emergency situation message, the roadside unit 30 can directly transmit the unique number of an emergency situation detection device 10 of the corresponding vehicle and the emergency situation message to the rescue center 50 (S560). However, in cases where the surrounding vehicle receives the vehicle's emergency situation message instead of the roadside unit 30, a control device 13 of the surrounding vehicle broadcasts the unique number of the vehicle experiencing the emergency situation and the emergency situation message back to the surrounding area (S560). If the roadside unit 30 or the rescue center 50 is located adjacent to the vehicle in the surrounding area, information about the vehicle's emergency situation can be directly transmitted to the rescue center 50.However, in cases where the roadside unit 30 or the rescue center 50 is not adjacent to the tethered vehicle, the emergency situation message is broadcast until a signal reaches the roadside unit 30 or the rescue center 50.

[0062] In this specification, an abnormal condition of a vehicle may be represented as an emergency situation or an emergency state, and a state in which an emergency situation of another vehicle is monitored and it is determined that the abnormal condition of the other vehicle is to be propagated to the outside may be represented as an emergency propagation or relaying state.

[0063] Furthermore, the device that receives the emergency situation message of the vehicle and broadcasts the unique number of the vehicle in the emergency situation and the emergency situation message again to the surroundings according to the above example may be represented as an emergency situation broadcasting device, and the emergency situation broadcasting device may be implemented in the interior of the vehicle in the surroundings or the roadside unit near the vehicle in the emergency situation.

[0064] Fig. 6 is a block diagram illustrating a configuration of a vehicle emergency situation detection system according to another embodiment of the present invention.

[0065] In the vehicle emergency situation detection system according to another embodiment of the present invention, a roadside unit 130 can determine an emergency situation of a vehicle 105 using information provided by the vehicle 105. After determining the emergency situation, the roadside unit 130 stands by for a predetermined period of time, verifies the emergency situation, and broadcasts the emergency situation for the vehicle 105 to a nearby vehicle 105 or to a rescue center 150.

[0066] The vehicle 105 according to this embodiment may include various types of sensors and devices 111, a communication unit 115 and a control device 113.

[0067] Examples of the sensors here may include: a speed sensor, a wheel sensor, an acceleration sensor, a lateral acceleration sensor, a yaw rate sensor, a rollover detection sensor, and the like, as in the above-described embodiment.

[0068] The communication unit 115 can support communication with the roadside unit 130 and the vehicle 105 in the surroundings, and can use one of Wi-Fi, Wibro, and DSRC as a communication scheme.

[0069] The control device 113 may collect information from the various types of sensors and devices and may send the collected information to the roadside unit 130 and the vehicle 105 in the surroundings through the communication unit 115.

[0070] The roadside unit 130 may include: a wired communication unit 133 for communicating with another roadside unit 130 and the rescue center 150, a radio communication unit 131 for communicating with the vehicle 105, a monitoring unit 135 that determines an emergency situation for the vehicle 105, and a device control unit 137 that sends the emergency situation for the vehicle 105 to the rescue center 150 through a verification process when an emergency situation determination unit 11 determines the emergency situation.

[0071] The wired communication unit 133 may be connected to a wired network to support communication with the other roadside unit 130 in the surrounding area and the rescue center 50 and to support communication based on a TCP / IP protocol.

[0072] The radio communication unit 131 can support radio communication with the vehicle 105 and can use the same communication scheme as the communication unit 115 of the vehicle 105, namely one of Wi-Fi, Wibro, and DSRC. The information that the control device 113 of the vehicle 105 collects from the various types of sensors and devices is sent to the roadside unit 130 via the radio communication unit 131, along with the unique number of the vehicle 105.

[0073] The monitoring unit 135 can determine an emergency situation for the vehicle 105 using the various types of information received from the vehicle 105. The monitoring unit 135 can determine the emergency situation for the vehicle 105 in the same way that the emergency situation determination unit 11 determines the emergency situation for the vehicle 105 using the information collected from the various types of sensors and devices in the above-described embodiment. A method for determining the emergency situation has been described in the above-described embodiment, and therefore, a repeated description thereof will be omitted.

[0074] When the monitoring unit 135 determines that the vehicle 105 is in an emergency situation, the device control unit 137 monitors information transmitted from the corresponding vehicle 105 during a predetermined standby time. As the predetermined standby time elapses, if the collected information continuously indicates that the vehicle 105 is in an emergency situation, the device control unit 137 transmits the emergency situation of the vehicle 105 to the other roadside unit 130, the rescue center 150, and the vehicle 105 in the surrounding area through the wired communication unit 133.

[0075] If no response or information is received from the vehicle 105 within the standby time, the device control unit 137 determines that the device transmitting information in the vehicle 105 has failed, or determines that the vehicle 105 is in an emergency situation and broadcasts the emergency of the vehicle 105 to the outside. Furthermore, if information is received from the vehicle 105 but the information acquired by various types of sensors or devices does not agree with each other, the device control unit 137 also determines that the vehicle 105 is in an emergency situation.

[0076] On the other hand, when it is determined from the information collected within the standby time that the emergency situation of the vehicle 105 has ended, the device control unit 137 determines that the vehicle 105 is not in an emergency situation.

[0077] A process of detecting and forwarding an emergency situation of the vehicle 105 by the vehicle emergency situation detecting system according to the other embodiment of the present invention having such a configuration will be described with reference to Fig. 7 as described below.

[0078] When the vehicle 105 starts traveling, the various types of sensors and devices 111 detect the traveling state of the vehicle 105, and the control device 113 of the vehicle 105 collects information obtained from the various types of sensors and devices 111. Afterward, the control device 113 sends the collected information to the roadside unit 130 through the communication unit 115 (S710).

[0079] The monitoring unit 135 of the roadside unit 130 determines an emergency situation of the vehicle 105 using the information obtained from the vehicle 105 (S720). If it is determined that the vehicle 105 is in an emergency situation, the device control unit 137 stands by for a predetermined period of time and observes the determination results of the monitoring unit 135 (S730).When the monitoring unit 135 determines that the emergency situation has not been canceled (S740), that is, when the information acquired by the various types of sensors and devices 111 does not agree with each other or the control device is in a non-response state in which a signal from the vehicle 105 is not received, the device control unit 137 sends the emergency situation of the vehicle 105 to the rescue center 150, the other roadside unit 130, and the vehicle 105 in the surroundings through the wired communication unit 133 and the radio communication unit 131 (S750).

[0080] Although the embodiment in which a vehicle having an emergency situation detection device 10 installed therein detects an emergency situation thereof and the other embodiment in which the roadside unit 130 receives information from a vehicle and detects an emergency situation of the vehicle 105 have been described above, it is obvious that all of the vehicle 105 and the roadside units 30, 130 may also be configured to detect an emergency situation.

[0081] As described above, according to the present invention, when information that the vehicle 105 is in an emergency situation is collected, the roadside unit 30 or 130 or the vehicle 105 in the vicinity is placed on standby for a predetermined period of time, the emergency situation is verified, and the emergency situation of the corresponding vehicle 105 is notified to the rescue center 150, the other roadside unit 30 or 130, and the vehicle 105 in the vicinity when the emergency situation is identified. Accordingly, it is possible to quickly inform the rescue center 150 of the emergency situation for the vehicle 105 and provide accurate information, thereby performing effective rescue.

[0082] Fig. 8 is a diagram of an emergency situation detection system according to the present invention, shown in a different form.

[0083] The In Fig. The emergency situation detection system illustrated in Fig. 8 may include: an emergency situation detection device 810 installed in a first vehicle (a driver's vehicle) in which an emergency situation occurs; an emergency situation dissemination device 820 that receives a message from the vehicle in the emergency situation, determines an emergency dissemination state, and disseminates the emergency situation to an external rescue center; and a rescue center system 830 that finally receives information about the emergency situation for the vehicle.

[0084] The emergency situation dissemination device 820 may be installed in a vehicle other than the vehicle in the emergency situation, or it may be implemented inside a roadside unit or a separate traffic control device outside the vehicle.

[0085] In this specification, the first vehicle in which an emergency situation occurs is referred to as a driver's vehicle, and the second vehicle as an emergency situation dissemination device that disseminates the emergency situation of the driver's vehicle to an external rescue center is referred to as another vehicle, an external vehicle, or a vehicle in the surrounding area.

[0086] Furthermore, an abnormal state of the driver's vehicle may be represented as an emergency situation or an emergency state, and a state in which an emergency situation of the other vehicle is monitored and it is determined that the abnormal state of the other vehicle is to be disseminated to the outside may be represented as an emergency dissemination state.

[0087] The emergency situation detection device 810 may include: a sensor unit 812 formed with one or more of a speed sensor, a wheel sensor, an acceleration sensor, a lateral acceleration sensor, a yaw rate sensor, and a tilt sensor; an emergency determination unit 814 that receives a signal from the sensor unit 812 and determines whether the driver's vehicle is in an emergency situation;and a communication unit 816 that creates at least one of an emergency situation message representing the emergency situation of the driver's vehicle and a release message representing a release of the emergency situation according to the determination result of the emergency situation determination unit 814, sends the message to an external emergency situation dissemination device, and enables the emergency situation dissemination device to disseminate an emergency dissemination state of the driver's vehicle to the outside.;

[0088] Since an emergency situation determination method of the emergency situation determination unit 814, an emergency situation message, and the like are the same as those described above, a repeated description thereof will be omitted. Furthermore, in some cases, the emergency situation detection device 810 and the emergency situation dissemination device 820 may be installed in a single vehicle.In this case, the emergency situation detection device 810 may further include a device control unit that determines whether the other vehicle is in an emergency dissemination state based on an emergency situation message or a release message sent from another vehicle, and sends information about the other vehicle in the emergency situation and the emergency situation message to an external device including a rescue center when it is determined that the other vehicle is in the emergency dissemination situation.

[0089] Standard content or documents mentioned in the above-described embodiments are omitted to keep the description of the specification brief, and they form part of this specification. Therefore, if any content and documents associated with the standard are added to the present specifications or specified in claims, they should be considered part of the present invention.

[0090] Although the embodiments of the present invention have been described for illustrative purposes, it will be apparent to those skilled in the art that various modifications, additions, and substitutions are possible without departing from the scope and spirit of the invention. Therefore, exemplary aspects of the present disclosure have not been described for limiting purposes. The scope of the present invention should be interpreted based on the accompanying claims in such a way that all technical ideas included within the range equivalent to the claims belong to the present invention. Description of reference numbers 10 Emergency situation detection device 11 Emergency Situation Determination Unit 13 Control device 21 Speed ​​sensor 23 Accelerometer 25 Yaw rate sensor 30 street-side unit 33 Radio communication unit 35 Device control unit 15 Communication unit 22 Wheel sensor 24 Lateral acceleration sensor 26 Rollover detection sensor 31 wired communication unit 50 rescue center

Claims

[1] Device for detecting an emergency situation for a vehicle, comprising: a sensor unit (812) formed with one or more of a speed sensor (21), a wheel sensor (22), an acceleration sensor (23), a lateral acceleration sensor (24), a yaw rate sensor (25), and an inclination sensor (26); an emergency situation determination unit (11, 814) that receives a signal from the sensor unit (812) and determines whether a first vehicle in which the device is installed is in an emergency situation; a control device (13) configured to receive a signal from a second vehicle, which is a vehicle in a vicinity of the first vehicle, and to determine whether the second vehicle is in an emergency situation, and, when an emergency situation message is received from the second vehicle, to perform a process of verifying the emergency situation message from the second vehicle; and a communication unit (15, 115, 816) configured to generate an emergency situation message representing an emergency situation of the first vehicle and a release message representing a release of the emergency situation according to a determination result of the emergency situation determination unit (11, 814), to transmit the emergency situation message and the release message of the first vehicle and / or, when an emergency situation message from the second vehicle has been received and verified by the control device (13), the verified emergency situation message from the second vehicle to an external emergency situation dissemination device (820), and to enable the emergency situation dissemination device (820) to externally disseminate an emergency dissemination state of the first vehicle in which the emergency situation of the second vehicle is observed and it is determined that an abnormal state of the second vehicle is to be disseminated,to spread outwards., [2] The device of claim 1, further comprising: a device control unit (35, 137, 824) that determines whether the second vehicle is in an emergency broadcast state based on the emergency situation message or the release message sent from the second vehicle, and sends information about the second vehicle in the emergency situation and the emergency situation message to an external device including a rescue center (50, 150, 830) when it is determined that the second vehicle is in the emergency broadcast state. [3] The apparatus according to claim 1 or 2, wherein the emergency situation determining unit (11, 814) determines that the first vehicle is in the emergency situation when a change in acceleration detected by the acceleration sensor (23) exceeds a preset threshold value. [4] The apparatus according to any one of claims 1 to 3, wherein the emergency situation determining unit (11, 814) determines that the first vehicle is in danger of overturning when the lateral acceleration detected by the lateral acceleration sensor (24) changes rapidly. [5] The apparatus according to claim 1, wherein the emergency situation determining unit (11, 814) determines that the first vehicle is skidding or uncontrollable when a yaw rate value detected by the yaw rate sensor (25) is above a predetermined value or fluctuates. [6] The apparatus according to any one of claims 1 to 5, wherein the emergency situation determining unit (11, 814) determines that the first vehicle is in danger of rollover when an inclination of the vehicle detected by the inclination sensor (26) is above a predetermined value. [7] The apparatus according to any one of claims 1 to 6, wherein the emergency situation determining unit (11, 814) determines that the first vehicle is in the emergency situation when a speed of the first vehicle detected by the speed sensor (21) and an acceleration detected by the acceleration sensor (23) at the same time correspond to a combination that cannot occur in normal driving. [8] The apparatus according to any one of claims 1 to 7, wherein the emergency situation determining unit (11, 814) determines that the first vehicle is in the emergency situation when running speeds of front and rear wheels detected by the wheel sensor (22) do not agree with each other. [9] The apparatus according to claim 2 or any one of claims 3 to 8 when dependent on claim 2, wherein the apparatus control unit (35, 137, 824) determines that the second vehicle is in the emergency broadcast state when information about the emergency situation is received again or the release message is not received from the second vehicle within a preset standby time after receipt of the emergency situation message. [10] Apparatus according to any one of claims 1 to 9, wherein the emergency situation message and the release message are defined as SystemFailureSuspectFlag and SystemFailureRecoveryFlag, respectively, and are sent while being included in a Part II message of a Basic Safety Message (BSM) for vehicle communication. [11] A method for detecting an emergency situation for a vehicle, comprising: a signal receiving step of receiving a signal from a sensor unit (812) of a first vehicle formed with one or more of a speed sensor (21), a wheel sensor (22), an acceleration sensor (23), a lateral acceleration sensor (24), a yaw rate sensor (25), and a tilt sensor (26), and an emergency situation message from a second vehicle which is a vehicle in a vicinity of the first vehicle; an emergency situation determination step of verifying the emergency situation message from the second vehicle and determining, based on the signal from the sensor unit (812) and the verified emergency situation message from the second vehicle, whether the first and / or second vehicle is in an emergency situation; and a message transmission step of generating an emergency situation message representing the emergency situation of the first vehicle and a release message representing the release of the emergency situation according to the determination result of an emergency situation determination unit (11, 814), transmitting the emergency situation message and the release message of the first vehicle and / or the verified emergency situation message of the second vehicle to an external emergency situation dissemination device (820), and enabling the emergency situation dissemination device (820) to externally disseminate an emergency dissemination state of the first vehicle in which an emergency situation of the second vehicle is observed and it is determined that an abnormal state of the second vehicle is to be disseminated.

Images