Emergency communication system for an ego vehicle, ego vehicle and method

Abstract

The invention relates to an emergency communication system (1) for an ego vehicle (2) comprising an accident detection device (3), wherein the accident detection device (3) is designed to detect an accident and subsequently generate an accident signal, and a communication device which is designed for the wireless transmission of data via a data interface, and further comprising a diagnostic module (5), wherein the diagnostic module (5) is designed to determine accident-relevant ego vehicle data and accident-relevant occupant data, wherein a vehicle-dependent first power supply is provided for supplying the communication device and the diagnostic module (5) with power, wherein the diagnostic module (5) is designed to transmit the accident-relevant ego vehicle data and the accident-relevant occupant data via the data interface of the communication device, wherein a vehicle-independent second power supply is also provided,wherein the vehicle-independent second power supply is designed to supply the diagnostic module (5) and the communication device with power independently of the vehicle upon detection of an accident signal by the accident detection device (3), and wherein the diagnostic module (5) is designed to check available networks with regard to their network signal strengths upon receipt of an accident signal and to send the detected ego-vehicle data and passenger data via the data interface of the communication device to the network with the highest network signal strength. Furthermore, the invention relates to an ego vehicle and method

Description

[0001] The invention relates to an emergency communication system for an ego vehicle, comprising an accident detection device and a communication device configured for wirelessly transmitting data via a data interface. The accident detection device is configured to detect an accident and subsequently generate an accident signal, and a diagnostic module is provided. Furthermore, the invention relates to an ego vehicle and a method.

[0002] Today, emergency call systems are being developed for vehicles to enable emergency calls to be made during or before an accident. The emergency call serves to allocate emergency services and provide first aid to the occupants of a vehicle involved in the accident. Often, the emergency call systems themselves are damaged by the vehicle's accident.

[0003] It is already known from the state of the art that motor vehicles can trigger so-called e-calls, for example, if the vehicle detects an accident. These e-calls are automatically triggered electronic emergency calls from the vehicle that an accident has occurred, which then automatically contact an emergency control center. The emergency control center can then, in turn, dispatch the appropriate resources and personnel, such as ambulances. The emergency personnel then take over the appropriate operation and, for example, head out to the injured person and the vehicle involved in the accident.

[0004] DE 10 2016111787 A1 discloses a vehicle communication system comprising: an accelerometer, and a controller programmed to activate an emergency mode in response to a signal from the accelerometer indicating an accident of the vehicle, to request biometric data from occupants of the vehicle, and to cause data identifying the vehicle, a location of the vehicle, and a time of activation of the emergency mode, and biometric data received in response to the request, to be transmitted.

[0005] DE 10 2020205459 A1 discloses an emergency assistance system and a method for operating an emergency assistance system for a motor vehicle, in which, in the event of an accident involving the motor vehicle, an automatic emergency call is made to a rescue control center by means of the emergency assistance system, and in which at least one item of information relating to the accident involving the motor vehicle is transmitted from an electronic computing device of the emergency assistance system external to the motor vehicle to an ambulance by means of a mobile radio connection, wherein at least one item of personal information relating to an occupant of the motor vehicle is transmitted from the motor vehicle to the ambulance via short-range communication.

[0006] It is therefore an object of the invention to provide an improved emergency communication system and an ego vehicle as well as an improved method for operating an emergency communication system.

[0007] The problem is solved by an emergency communication system having the features of claim 1, an ego vehicle having the features of claim 10 and a method having the features of claim 11.

[0008] Advantageous embodiments emerge from the dependent patent claims, the description and the figures.

[0009] The object is achieved by an emergency communication system for an ego vehicle comprising an accident detection device, wherein the accident detection device is designed to detect an accident and subsequently generate an accident signal, and a communication device which is designed to wirelessly transmit data via a data interface, and further comprising a diagnostic module, wherein the diagnostic module is designed to determine accident-relevant ego vehicle data and accident-relevant occupant data, and wherein a vehicle-dependent first power supply is provided for supplying the communication device and the diagnostic module with power, wherein the diagnostic module is designed to send the accident-relevant ego vehicle data and the accident-relevant occupant data via the data interface of the communication device, wherein a vehicle-independent second power supply is further provided, wherein the vehicle-independent second power supply is designed to supply the diagnostic module and the communication device with power independently of the vehicle upon detection of an accident signal by the accident detection device, and wherein the diagnostic module is designed to check available networks with regard to their network signal strengths upon receipt of an accident signal and to send the detected accident-relevant ego-vehicle data and accident-relevant occupant data via the data interface of the communication device to the network with the highest network signal strength.

[0010] Signal strength is measured with negative numbers in decibel milliwatts (dBm). The higher the measured value (i.e., closer to zero), the stronger the signal. A dBm (decibel milliwatt) is the logarithmic value for signal strength, for example, during data transmission over a Wi-Fi network. This value describes the strength of the transmitted or received signal relative to one milliwatt.

[0011] In general, the diagnostic module and the communication device can be supplied with energy independently of the vehicle or at least in the event of a failure of the vehicle-dependent first energy supply.

[0012] Recorded accident-relevant ego-vehicle data can include, for example, acceleration, for example to estimate impact force, braking information, speed, GPS position, position of the ego-vehicle (for example, in the event of a rollover), seat belt position, number and condition of the occupants, etc.

[0013] Accident-relevant ego-vehicle data can be defined in advance. This data can also be extracted from the recorded sensor data / actuator data, etc., using an intelligent algorithm, for example, to provide the ego-vehicle and occupant data that are useful as information for an ambulance / first responder or other emergency vehicles in the event of an accident. In particular, the accident-relevant ego-vehicle and occupant data are pre-crash data recorded shortly before the accident.

[0014] Accident detection can be achieved, for example, using a crash sensor / impact sensor, etc., and is well known.

[0015] V2X technologies are known for helping to improve the efficiency of traffic management and reduce congestion. They inform drivers of upcoming traffic jams and offer alternative routes, for example. Furthermore, V2X technology enables communication between vehicles and traffic lights, road signs, or other intelligent traffic systems. The invention recognized that the technology is not sufficient to assist in the event of accidents, send crash warnings, and efficiently notify nearby hospitals and authorities.

[0016] Especially in the event of a serious accident involving a power failure, the connection between the ego vehicle and the infrastructure fails. Furthermore, especially in accidents involving electric vehicles, an automatic power-off of the ego vehicle may be necessary to prevent electric shocks or flashovers for both rescue personnel and vehicle occupants. However, this makes communication for transmitting relevant data impossible.

[0017] The emergency communication system according to the invention ensures the transmission of critical accident-relevant data even when the device is switched off, for example, using the Wi-Fi network, the Bluetooth network, or via a hotspot, with the network selection always based on the best available signal. This ensures the best possible data transmission, even in areas where there is little or no internet connection (Wi-Fi network), such as remote forests in winter.

[0018] According to the invention, the emergency communication system is equipped with a separate vehicle-independent power supply, for example a rechargeable battery, which is only activated in the event of a crash detection (accident detection).

[0019] The emergency communication system according to the invention enables the crashed ego vehicle to transmit critical data with minimal (energy) power and limited data transmission limits. In particular, the ego vehicle can transmit the ego vehicle data and passenger data to a passing vehicle (road user) equipped with a corresponding diagnostic module, which forwards the received ego vehicle data and passenger data to an external server / rescue center.

[0020] With the help of the emergency communication system according to the invention, accident information, information about occupant injuries, information about nearby hospitals, and the ambulance network can be exchanged between users, ambulance drivers, and hospitals. Appropriate monitoring and treatment of the injured is thus possible in the shortest possible time.

[0021] The emergency communication system according to the invention provides an improved infrastructure for the accident warning system.

[0022] The emergency communication system according to the invention enables timely communication with the healthcare system and improves the readiness of hospitals to treat cases.

[0023] The emergency communication system according to the invention enables critical data about accidents to be efficiently transmitted to the healthcare system via a connected infrastructure. According to the invention, the emergency communication system decides on the best way to provide data after an accident, both in the powered energy mode and in the non-powered energy mode (non-powered energy mode, OFF state) of the host vehicle. In the non-powered state, the network with the strongest signal is automatically selected.

[0024] In a further development, the diagnostic module is configured to transmit external vehicle data and external passenger data received from an external diagnostic module in a road user vehicle via the data interface of the communication device, for example, to an external server. If another road user vehicle is involved in an accident, the ego vehicle can serve as the receiving vehicle and transmit the data received from the involved road user vehicle by the external diagnostic module in the involved road user vehicle to an external server, which can also be located in an ambulance, emergency control center, etc.

[0025] Thus, the diagnostic module not only serves the ego vehicle's own safety in the event of an emergency, but also serves as a receiving and forwarding module when the ego vehicle is not involved in an accident. The vehicle involved in the accident can send a trigger along with the external data, which prompts / instructs the receiving diagnostic module in the ego vehicle to forward the external vehicle data and external occupant data.

[0026] In a further development, the diagnostic module is configured to transmit the recorded accident-relevant ego-vehicle data and accident-relevant occupant data to an external server via the data interface of the communication device, while the communication device and the diagnostic module are supplied with power by the vehicle-dependent first power supply. The external server can be located in an ambulance, rescue control center, etc., or can be a cloud in which the data is already being evaluated. For this purpose, algorithms tailored to the diagnostic module can be stored in the cloud.

[0027] In a further development, the diagnostic module is configured to add a first trigger to the recorded ego-vehicle data and occupant data, which forwards the recorded ego-vehicle data and occupant data from the external server to a predefined emergency response center. The trigger can be a forwarding function or a distribution function. Data previously evaluated in the cloud can also be forwarded to the appropriate emergency response centers. For example, the sensor data can be used to detect if a driver is trapped in the seat / the ego-vehicle is in a ditch, and thus simultaneously notify the appropriate emergency response center, such as the technical assistance agency. This can save valuable time.

[0028] Furthermore, the diagnostic module can be configured to add a second trigger to the acquired ego-vehicle data and occupant data, which causes the acquired ego-vehicle data and occupant data to be forwarded from the external server to a predefined emergency contact vehicle, in particular, wherein the emergency contact vehicle data can be attached to the trigger. For example, the emergency contacts can be informed of an accident at the same time as the rescue services.

[0029] If the first power supply does not fail, the diagnostic module can be designed to transmit the recorded accident-relevant ego vehicle data and accident-relevant occupant data to an emergency contact vehicle via the data interface of the communication device while the communication device and the diagnostic module are supplied with energy by the vehicle-dependent first power supply.

[0030] In a further development, the diagnostic module is integrated into the communication device, for example, as a software application. The diagnostic module can be integrated into the communication device, for example, together with a mobile phone. No additional hardware is required for the integration of this application.

[0031] The communication device can be designed as a telematics control unit or an infotainment control unit.

[0032] Furthermore, the vehicle-independent second power supply can be designed as a battery storage unit or an accumulator. This ensures an independent power supply. In particular, the accumulator design can ensure that the battery is charged at all times.

[0033] Furthermore, the object is achieved by an ego vehicle comprising at least one driver assistance system (ADAS) and / or at least one automated driving system (ADS), an impact sensor and an acceleration sensor and an occupant monitoring system as well as an emergency communication system as described above with a diagnostic module, wherein the diagnostic module is designed to extract accident-relevant data from the recorded data from the driver assistance system and / or automated driving system, as well as from the impact sensor and the acceleration sensor and the occupant monitoring system as well as the crash sensor and to provide them as accident-relevant ego vehicle data and accident-relevant occupant data.

[0034] Other relevant data from sensors or actuators can also be used. This data can be selected and extracted using an intelligent algorithm, for example. This data can be extracted based on significantly deviating sensor / actuator data, or predefined data that must always be extracted, such as speed or acceleration, or the interior of the host vehicle monitored by a camera system.

[0035] The ego vehicle can, for example, be an autonomous or semi-autonomous vehicle.

[0036] Furthermore, the object is achieved by a method for operating an emergency communication system for an ego vehicle comprising an accident detection device and at least one communication device which is designed for wireless transmission of data via a data interface, comprising the steps: - Detection of an accident by the accident detection device and generation of an accident signal, - Providing a diagnostic module, - Providing a vehicle-dependent first power supply for supplying the communication device and the diagnostic module with power, wherein the diagnostic module is designed to determine accident-relevant ego vehicle data and accident-relevant occupant data and to transmit them via the data interface of the communication device, - Providing a vehicle-independent second power supply, wherein the vehicle-independent second power supply is designed to supply the diagnostic module and the communication device with power independently of the vehicle upon detection of an accident signal by the accident detection device, - upon receipt of an accident signal, the available networks are checked for their network signal strengths by the diagnostic module and the recorded accident-relevant ego vehicle data and accident-relevant occupant data are sent via the data interface of the communication device to the network with the highest network signal strength.

[0037] The advantages and advantageous configurations of the emergency communication system can be transferred to the method. In particular, the method can be implemented on the emergency communication system according to the invention.

[0038] Further features and advantages of the present invention will become apparent from the following description with reference to the accompanying figures, which schematically show: Fig. 1: an emergency communication system according to the invention, Fig. 2: the emergency communication system according to the invention in operation. Fig. 1 shows a schematic view of an emergency communication system 1 according to the invention for an ego vehicle 2.

[0039] This has an accident detection device 3 ( Fig. 2). The accident detection device 3 can, for example, have an impact sensor and / or crash sensor, etc., by means of which an accident can be easily detected. The accident detection device 3 is designed to generate an accident signal when an accident is detected.

[0040] There is also an emergency communication system 1.

[0041] The emergency communication system 1 further includes a telematics control unit 4. This is designed for wireless transmission, i.e., sending and receiving data via a data interface. The telematics control unit 4 can have multiple antennas, for example, to facilitate NFC communication via Bluetooth, a WLAN connection to the Internet, or transmission to a cloud 9.

[0042] The ego vehicle 2 may have one or more different driver assistance systems 12 (ADAS) and / or one or more automated driving systems (ADS), the impact sensor and / or crash sensor 13 and an acceleration sensor 10 and an occupant monitoring system 11 for acquiring ego vehicle data and occupant data.

[0043] Furthermore, a diagnostic module 5 ( Fig. 2). The diagnostic module 5 determines accident-relevant ego-vehicle data and accident-relevant occupant data, such as the current speed, the driver's condition, etc. For this purpose, the diagnostic module 5 can have an intelligent algorithm for recording and providing the ego-vehicle data and occupant data that are relevant in the event of an accident. The data can, for example, be selected and extracted by the intelligent algorithm. This data can be, for example, sensor data / actuator data that deviates significantly from the norm, or predefined data that must always be extracted, such as speed or acceleration, or the interior of the ego-vehicle 2 monitored by a camera system.

[0044] The diagnostic module 5 is located in the telematics control unit 4. Therefore, no additional hardware is required for integration.

[0045] Furthermore, a first energy supply, i.e., a power supply, is present, for example, the vehicle electrical system. This is designed to supply the telematics control unit 4 and thus the diagnostic module 5 under normal conditions.

[0046] The diagnostic module 5 sends the recorded accident-relevant ego vehicle data and accident-relevant occupant data via the interface of the telematics control unit 4 to an external server, in this case a cloud 9. The telematics control unit 4 is supplied with power, for example, by the vehicle's electrical system as the first power supply. When an accident is detected, the accident detection device 3 generates an accident signal. If the vehicle's electrical system or the first power supply fails, the telematics control unit 4 and the diagnostic module 5 are no longer supplied with power by the vehicle's electrical system or the first power supply. Particularly in the case of an electric vehicle, the ego vehicle 2 can also be intentionally de-energized to protect the occupants and rescue workers from electric shocks.

[0047] The emergency communication system 1 has a second vehicle-independent power supply for supplying power to the diagnostic module 5 and the telematics control unit 4, or at least partially to the telematics control unit 4. The second vehicle-independent power supply can be, for example, a battery or a rechargeable battery. The second vehicle-independent power supply is only activated in the event of an accident detection upon detection of the accident signal.

[0048] Upon receiving the accident signal, the diagnostic module 5 checks the networks available in the local area for their network signal strengths. Such networks can be, for example: cellular networks, use of a mobile hotspot, use of the mobile Wi-Fi hotspot, use of the Wi-Fi hotspot in the vehicle, Wi-Fi direct, Bluetooth, or, for example, geosocial networks. Geosocial networks can be understood to mean non-accident road users 8 who also have such a diagnostic module and are thus available to receive data from the ego vehicle 2 and can also transmit data to a cloud 9. Other geosocial networks can also be used. For this purpose, the diagnostic module 5 localizes information based on maps and GPS.

[0049] Furthermore, the diagnostic module 5 is designed to transmit the accident-relevant data, ie the accident-relevant ego vehicle data and accident-relevant occupant data (pre-crash data) recorded shortly before the accident, via the data interface to the network with the highest network signal strength.

[0050] Thus, the diagnostic module 5 ensures the use of critical data even when the device is switched off, e.g. with the help of the Wi-Fi module, the Bluetooth module or via a hotspot, which is based on the best available signal.

[0051] This allows the crashed ego vehicle 2 to transmit critical ego vehicle and passenger data, for example, to another passing road user 8, which also has a diagnostic module, or to the infrastructure, with minimal power and limited data transmission. The diagnostic module of the passing road user 8 can then forward the data to the external cloud 9.

[0052] A trigger can be added to the transmitted ego vehicle data and occupant data, for example a function which ensures that the transmitted ego vehicle data and occupant data are stored in the cloud 9 and transmitted collectively to an emergency rescue center, for example a hospital 6 or an ambulance 7.

[0053] Furthermore, the diagnostic module 5 can add a second trigger to the collected ego-vehicle data and occupant data, which triggers forwarding from the cloud 9 to an emergency contact vehicle, whereby the emergency contact vehicle data can be attached to the trigger. Alternatively, this function can already be present in the cloud 9, for example, in an evaluation unit that evaluates or stores the collected ego-vehicle data and occupant data.

[0054] With the help of Diagnostic Module 5, accident information, information about occupant injuries, information about nearby hospitals, and the ambulance network are exchanged between users, ambulance drivers, and hospitals, even when the vehicle is not powered. This enables appropriate monitoring and treatment of the injured in the shortest possible time.

[0055] The emergency communication system 1 according to the invention thus enables timely communication with the healthcare system and improves the readiness of hospitals 6 to treat cases.

[0056] Fig. 2 shows an interaction of the emergency communication system 1 according to the invention with the diagnostic module 5 and the accident detection device 3 as well as with the telematics control unit 4 and the various driver assistance systems 12 (ADAS), the crash sensor 13 and the acceleration sensor 10 and the occupant monitoring system 11 in relation to an ambulance 7 and a hospital 6 as well as with another road user 8.

[0057] The emergency communication system 1 according to the invention enables an ego vehicle 2 involved in an accident to transmit the injury status of the occupants to a nearby hospital 6, so that medical personnel are prepared to treat the injured person and dismiss the case if no medical infrastructure is available. This can save time.

[0058] Furthermore, the powered ego vehicle 2 can transmit information about the accident, including its location, etc., to the nearby ambulance 7. Once it reaches the scene, the ambulance 7 can transmit the accident details and the condition of the occupant to the hospital 6. This, in turn, helps the hospital 6 prepare and reject the case if the hospital 6 lacks the necessary infrastructure. The occupant can be taken directly to a hospital 6 that does have the necessary infrastructure for treatment. The hospital 6, in turn, can provide the ambulance 7 with information about the accident and the accident location.

[0059] The hospital 6 can interact with the ego vehicle 2 to inform it about its area of expertise and to provide first aid to the occupant in case of an accident.

[0060] In the case of a de-energized ego vehicle 2, pre-crash data such as EDR (event data recorder) data, data from the occupant monitoring system 11, etc., before the accident, and their prediction data can be transmitted to the nearby road user 8 using the vehicle-independent second power supply. This data is in turn sent via the road user 8, for example, to an external cloud 9 and from there to the hospital 6.

[0061] In the case of a de-energized ego vehicle 2, an emergency contact vehicle can also be connected to the ego vehicle 2 as soon as a possible accident has been triggered.

[0062] The emergency communication system 1 according to the invention enables vehicle emergency assistance even when the vehicle is switched off and without power, thus enabling an improved infrastructure for emergency medical care of ego vehicles 2 and improved communication between ego vehicles 2 and the healthcare system.

[0063] Furthermore, rapid emergency medical assistance is possible for Ego vehicles 2 and their occupants.

[0064] The emergency communication system 1 according to the invention establishes a connection to the vehicle infrastructure in order to retrieve accident information and the occupant status. List of reference symbols 1 emergency communication system 2 Ego vehicle 3 Accident detection device 4 Telematics control unit 5 Diagnostic module 6 Hospital 7 ambulances 8 road users 9 Cloud 10 Accelerometer sensor 11 Occupant monitoring system 12 driver assistance systems 13 Crash sensor QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] DE 10 2016111787 A1

[0004] DE 10 2020205459 A1

[0005]

Claims

[1] Emergency communication system (1) for an ego vehicle (2) comprising an accident detection device (3), wherein the accident detection device (3) is designed to detect an accident and subsequently generate an accident signal, and a communication device which is designed to wirelessly transmit data via a data interface, and further comprising a diagnostic module (5), wherein the diagnostic module (5) is designed to determine accident-relevant ego vehicle data and accident-relevant occupant data, characterized by , that a vehicle-dependent first power supply is provided for supplying the communication device and the diagnostic module (5) with power, wherein the diagnostic module (5) is designed to send the accident-relevant ego vehicle data and the accident-relevant occupant data via the data interface of the communication device, wherein a vehicle-independent second power supply is also provided, wherein the vehicle-independent second power supply is designed to supply the diagnostic module (5) and the communication device with power independently of the vehicle upon detection of an accident signal by the accident detection device (3), and wherein the diagnostic module (5) is designed to check available networks with regard to their network signal strengths upon receipt of an accident signal and to send the detected ego-vehicle data and occupant data via the data interface of the communication device to the network with the highest network signal strength. [2] Emergency communication system (1) according to claim 1, characterized bythat the diagnostic module (5) is designed to send external vehicle data and external passenger data received from an external diagnostic module (5) in an accident-damaged road user vehicle via the data interface of the communication device. [3] Emergency communication system (1) according to one of the preceding claims, characterized by in that the diagnostic module (5) is designed to transmit the recorded accident-relevant ego vehicle data and accident-relevant occupant data to an external server via the data interface of the communication device while the communication device and the diagnostic module (5) are supplied with energy by the vehicle-dependent first energy supply. [4] Emergency communication system (1) according to claim 3, characterized bythat the diagnostic module (5) is designed to add a first trigger to the recorded ego vehicle data and occupant data, which triggers forwarding of the recorded ego vehicle data and occupant data from the external server to a predefined emergency rescue center. [5] Emergency communication system (1) according to claim 3 or 4, characterized by that the diagnostic module (5) is designed to add a second trigger to the recorded ego-vehicle data and occupant data, which triggers a forwarding of the recorded ego-vehicle data and occupant data from the external server to an emergency contact vehicle. [6] Emergency communication system (1) according to one of the preceding claims, characterized byin that the diagnostic module (5) is designed to transmit the recorded accident-relevant ego vehicle data and accident-relevant occupant data to an emergency contact vehicle via the data interface of the communication device while the communication device and the diagnostic module (5) are supplied with energy by the vehicle-dependent first energy supply. [7] Emergency communication system (1) according to one of the preceding claims, characterized by that the diagnostic module (5) is integrated in the communication device. [8] Emergency communication system (1) according to claim 7, characterized by that the communication device is designed as a telematics control unit (4). [9] Emergency communication system (1) according to one of the preceding claims, characterized by that the vehicle-independent second energy supply is designed as a battery storage unit or as an accumulator. [10] Ego vehicle (2) comprising at least one driver assistance system (ADAS) and / or at least one automated driving system (ADS), an impact sensor and an acceleration measuring sensor (10) and an occupant monitoring system (11), as well as an emergency communication system (1) designed according to one of the preceding claims, having a diagnostic module (5), wherein the diagnostic module (5) is designed to extract accident-relevant data from the recorded data from the driver assistance system (12) and / or automated driving system, as well as from the impact sensor and the acceleration measuring sensor (10) and the occupant monitoring system (11) as well as the crash sensor (13) and to provide them as accident-relevant ego vehicle data and accident-relevant occupant data. [11] Method for operating an emergency communication system (1) for an ego vehicle (2) comprising an accident detection device (3) and at least one communication device which is designed for wireless transmission of data via a data interface, comprising the steps: - detecting an accident by the accident detection device (3) and generating an accident signal, - Providing a diagnostic module (5), - Providing a vehicle-dependent first power supply for supplying the communication device and the diagnostic module (5) with power, wherein the diagnostic module (5) is designed to determine accident-relevant ego vehicle data and accident-relevant occupant data and to send them via the data interface of the communication device, - providing a vehicle-independent second power supply, wherein the vehicle-independent second power supply is designed to supply the diagnostic module (5) and the communication device with power independently of the vehicle upon detection of an accident signal by the accident detection device, - upon receipt of an accident signal, the available networks are checked for their network signal strengths by the diagnostic module (5) and the recorded accident-relevant ego vehicle data and accident-relevant occupant data are sent via the data interface of the communication device to the network with the highest network signal strength.

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