32 results about "Basic safety message" patented technology

A connected traffic safety system comprises at least one roadside unit and a vehicle detection device. The roadside unit is configured to transmit wireless signals and receive corresponding responses from a corresponding wireless device of an Onboard Unit (OBU)-equipped vehicle, and to send at least one of vehicle location data, direction heading data, elevation data and speed data from the OBU-equipped vehicle to a traffic signal controller. The vehicle detection device is configured to generate vehicle detection data of at least one non-Onboard Unit (OBU)-equipped vehicle. The roadside unit to receive the vehicle detection data for creating a proxy data wireless message for the non-Onboard Unit (OBU)-equipped vehicle. The roadside unit to mimic the proxy data wireless message as a first Basic Safety Message (BSM) for the non-Onboard Unit (OBU)-equipped vehicle that would have been available to the Onboard Unit (OBU)-equipped vehicle present nearby.

This presentation provides methods to track pedestrians heading angle using smart phone data. Tracking heading angle especially at or from stationary position is key for pedestrian safety, e.g., for smart cross system and pedestrian collision mitigation system. It provides pedestrian-to-vehicle (P2V) platform. It deploys smart phones or mobile devices, equipped with DSRC (Dedicated short range communication) support, to act as beacons for pedestrians: Phone can alert driver to pedestrian presence in path; Pedestrian Basic Safety Message (BSM) can aid awareness for vehicles; It can be used for bicycles, as well. It also provides pedestrian-to-infrastructure (P2I) platform. Smart phone, through DSRC / cellular, transmits pedestrian presence to crosswalks / signals: It enables advanced crosswalk lighting / warning scheme; It enables bundling of pedestrian presence to vehicles. In this presentation, we provide various examples and variations on these.

The invention relates to a driving safety monitoring device and method based on car networking BSM (Basic Safety Message) information fusion and belongs to the technical field of intelligent vehicles.According to the method, on the basis of safety pre-warning of a traditional vehicle and a special vehicle, a driving safety monitoring device and method based on car networking BSM information fusion are provided, a variable precision rough set and an information entropy measuring algorithm are combined, the collision risk degree in the driving process of a general vehicle or a special vehicle is judged, and real-time pre-warning is carried out. According to the device and the method in the invention, vehicle safety operation influence factors of multiple aspects of people, vehicles and roads are fully considered, thereby improving the accuracy of collision risk identification in a complex road traffic environment. The device and the method in the invention are high in calculation speed,can meet a functional requirement for real-time pre-warning, and can be widely applied to anti-collision pre-warning and safe driving auxiliary systems and driving simulation platforms of various vehicles (including special vehicles) for evaluation and prediction.

A roadside detection system, a roadside unit and a roadside communication method are provided. The roadside unit (104) receives a positioning signal from a satellite positioning system and obtains roadside latitude and longitude coordinates and an initialization parameter coordinate. The roadside unit (104) receives object information of the object. The roadside unit obtains object latitude and longitude coordinates, an object speed, an object acceleration, an object length, and an object heading / direction based on the roadside latitude and longitude coordinates, the initialization parameter coordinate, and the object information. The roadside unit (104) converts the object latitude and longitude coordinates, the object speed, the object acceleration, the object length, and the object heading / direction into a V2V Basic Safety Message format.

A roadside infrastructure system configured to generate and broadcast basic safety message data to augment vehicle safety applications. In one example, a roadside module of the system includes a camera, video analytics to process images from the camera to detect vehicles, a BSM generator that generates a BSM for each detected vehicle, and an antenna for broadcasting the BSM. In another example, the roadside module is configured to detect BSM data generated by equipped vehicles, to determine whether any detected vehicles are equipped vehicles generating their own BSM data, and to generate a BSM only for unequipped detected vehicles.

This presentation provides methods to track pedestrians heading angle using smart phone data. Tracking heading angle especially at or from stationary position is key for pedestrian safety, e.g., for smart cross system and pedestrian collision mitigation system. It provides pedestrian-to-vehicle (P2V) platform. It deploys smart phones or mobile devices, equipped with DSRC (Dedicated short range communication) support, to act as beacons for pedestrians: Phone can alert driver to pedestrian presence in path; Pedestrian Basic Safety Message (BSM) can aid awareness for vehicles; It can be used for bicycles, as well. It also provides pedestrian-to-infrastructure (P2I) platform. Smart phone, through DSRC / cellular, transmits pedestrian presence to crosswalks / signals: It enables advanced crosswalk lighting / warning scheme; It enables bundling of pedestrian presence to vehicles. In this presentation, we provide various examples and variations on these.

The invention discloses a method for detecting forward collision. A safety system for an automotive vehicle includes: a dedicated radio to receive and transmit state data between a host vehicle and aremote vehicle; a global positioning system (GPS) receiver; an on-board unit (OBE) to perform a vehicle-to-vehicle (V2V) communications so that the host vehicle receives state data of the remove vehicle in a basic safety message (BSM) format; and a safety control unit. In particular, the safety control unit receives the state data of the host and remote vehicles, calculates a separation distance,a prediction horizon time, and then compares the prediction horizon time with a driver reaction time to generate a warning to a driver. More specifically, the safety control unit performs a cost valueprocedure when a deducted prediction horizon time is greater than zero to determine variable coefficients for estimating a future position and speed of the host and remote vehicles.

The invention discloses an information processing method and equipment applied to a V2X scene. The method comprises the following steps: acquiring vehicle driving information and environment obstacleinformation of each vehicle in an area range; generating a corresponding basic safety message BSM for each vehicle according to the vehicle driving information and the environment obstacle information; and broadcasting the BSM to the vehicles in the area range to enable the vehicles receiving the BSM to respond to the current scene. Because the BSM is generated and sent to other vehicles after thevehicle driving information and the environment obstacle information of the vehicle are obtained through the equipment outside the vehicle, the influence of shielding or long distance can be avoided,a host vehicle can obtain accurate BSM information of a remote vehicle, and some potential safety hazards can be avoided.

The application discloses a vehicle accident recording method and device and a vehicle. A vehicle-mounted unit OBU acquires the own vehicle location and basic safety message (BSM) broadcasted by othervehicles in a vehicle stationary state, wherein the BSM includes identification codes and historical paths of the other vehicles; the OBU determines a suspected vehicle based on a relative position relationship between the own vehicle position and the historical paths of the other vehicles and generates a vehicle accident record including the suspected vehicle identification code; and when collision or scratch occurs between another vehicle and the vehicle in the stationary state, the vehicle is close to the another vehicle at the accident time and thus whether the another vehicle is a suspected vehicle causing the accident can be determined based on a relative position relationship between the own vehicle position and the historical paths in the BSM. After determination of the suspectedvehicle, the OBU generates a vehicle accident record containing the suspected vehicle identification code, thereby tracking the suspected vehicle and fixing the duty. Because of free of the limitationof the recording direction, the success rate of recording suspected vehicles is increased substantially and the user experience is improved.

The invention relates to a joint power and contention window size adaptive control (PCAC) algorithm for security application in the Internet of Vehicles. The transmission power is dynamically adjustedaccording to the estimation of the local vehicle density so as to solve the conflict between the transmission range and the interference; a zero-competition window and a minislot method are combinedwith an implicit confirmation mechanism based on a receiving end to ensure the preemptive priority and reliable transmission of the emergency message; a node estimates a conflict rate according to a data packet received from a neighbor node, and based on the estimated conflict rate, the size of a contention window of a basic security message is adjusted by adopting a coarse adjustment and fine adjustment combined method to improve the throughput of a system. A PCAC algorithm adopts a distributed mode, extra communication cost is avoided, and a large number of simulation experiments prove thatthe PCAC can obviously improve the data packet delivery rate and throughput of security services and reduce transmission delay.

The invention provides an Internet-of-Vehicles data exchange method based on a block chain. The method comprises the following steps: enabling the vehicle-mounted sensor of an information sending vehicle node to monitor the state of the vehicle at any time; transmitting the monitored data parameters to an OBU; enabling the OBU to define various received data parameters according to protocol standards; defining the message as a universal security message, wherein the basic security message is information which must be sent when data exchange is carried out between vehicles; enabling the OB to continuously and periodically send the BSM, on the basis of WAVE protocol-based Internet-of-Vehicles multi-triangle multicast communication, achieving data exchange between vehicles through master-slave node communication, ensuring rapid and stable communication between vehicles, and then achieving data exchange between roads and between vehicles through distributed broadcasting and storage of roadside units. According to the invention, the block chain technology is used to improve the safety and stability of vehicle mutual communication in the Internet of Vehicles.

Infrastructure-based warning system having the ability to detect cross-traffic long before onboard vehicle sensors, and broadcast a basic safety message (BSM) including the vehicle's global position, velocity, heading, etc. over dedicated short-range communication (DSRC). A vehicle leaving a parking space is able to receive broadcast over DSRC from infrastructure and provide the driver with an HMI warning that it is unsafe to backup. A vehicle exiting from a blind alley way or parking garage may be positioned such that the driver of the vehicle may not see that there is a pedestrian about to cross and that there is cross-traffic. The infrastructure mounted sensor is able to detect the pedestrian and cross-traffic and broadcast their location, velocity, and headings. The vehicle receives the BSM from the infrastructure and provides the driver with an HMI warning that it is unsafe to move out into the crosswalk and road.

The invention discloses a vehicle message processing method and device, a readable medium and electronic equipment. The method comprises the following steps of establishing communication connection with a cloud platform; based on the communication connection, sending a basic security message of the current vehicle end to the cloud platform in a unicast mode; based on the communication connection, receiving a basic security message which is forwarded by the cloud platform through a unicast mode and comes from a specified vehicle end set, the specified vehicle end set being a set of vehicle ends which are determined by the cloud platform according to the position information of at least one vehicle end and have a distance to the current vehicle end within a set range; and carrying out auxiliary driving according to a basic safety message of the specified vehicle end set. The method is advantaged in that the vehicle end does not need to depend on a special vehicle-mounted unit to transmit and receive the basic safety message, so manufacturing cost of the vehicle is reduced; meanwhile, the basic safety message received by the vehicle end is not limited by the broadcast distance of the vehicle-mounted unit any more, and it is guaranteed that the basic safety message received by the vehicle end is more accurate.

An apparatus for verifying a vehicle in an inter-vehicular communication environment includes: a communication unit configured to receive a basic safety message and a verification message from a remote vehicle that is allowed to engage in inter-vehicular communication; and a controller configured to determine that the remote vehicle is reliable when the communication unit receives the verificationmessage from the remote vehicle at least a predefined number of times over a predefined period of time, and to generate permission to utilize the basic safety message received from the remote vehiclewhen the controller determines that the remote vehicle is reliable.

The invention discloses a self-adaptive feedback control method for a basic safety message (Basic Save Message, BSM) in a Cooperative Vehicle Safety System (CVSSs). The self-adaptive feedback controlmethod comprises the following steps of capturing a channel competition condition in real time by using a traffic condition sensing model, hiding the influence of a terminal and a channel error rate,and calculating an IDR (Information Discovery Rate) to provide a basis for a prediction model; giving an ideal network performance by using a prediction model, regarding an ideal network state as to acquire the maximum IDR, and using the ideal IDR as a reference to guide BSM rate adaptive feedback control; and converging an error between the ideal IDR and the actual IDR to zero by using a feedbackrate control model. Compared with the prior art, the method has the advantages that factors having adverse effects on the IDR are fully considered, the real-time vehicle tracking precision can be improved in different Internet of Vehicles environments and network environments, and the robustness of the CVSSs under different interference influences is improved.

The invention discloses an indoor positioning method based on V2X technology, which belongs to the field of parking lot vehicle positioning, and comprises the following steps: receiving and analyzinga basic safety message sent by a vehicle; according to the basic safety message sent by the vehicle, obtaining vehicle characteristics, and carrying out vehicle identification and matching; preliminarily positioning the matched vehicle position to obtain the relative position of the vehicle in the detection area; acquiring a reference position of the detection area, and performing coordinate conversion on the reference position of the detection area and the relative position of the vehicle to obtain an absolute position of the vehicle; receiving and analyzing the roadside safety message, and analyzing the position information of the vehicle; updating the position information of the vehicle to realize the final positioning of the vehicle; the method depends on V2X roadside equipment data exchange, can be applied to underground and indoor parking lots, is accurate in positioning, and is low in vehicle side requirement and accurate and comprehensive in information compared with other methods.

The invention provides a forward collision early warning method and an active braking system. The method comprises the steps that a main vehicle receives a basic safety message sent by a far vehicle,and the basic safety message at least includes a timestamp, a far vehicle longitude and latitude, a far vehicle altitude, a far vehicle heading, a far vehicle speed and a far vehicle acceleration; themain vehicle calculates collision time between the main vehicle and the far vehicle according to the information of the main vehicle and the basic safety message; and if the collision time is smallerthan a safety calibration value, the main vehicle generates and outputs forward collision early warning, and information in the forward collision early warning at least includes a direction of the far vehicle and a distance between the main vehicle and the far vehicle. In the invention, technical problems that in the prior art, a traditional active braking system needs to be provided with a plurality of sensors, and a misjudgment rate is high during braking judgment are solved, and more reliable forward collision early warning can be provided through adopting a V2X technology by using the forward collision early warning method.

The invention discloses a method, device and equipment for controlling a vehicle and a storage medium, and relates to the technical field of vehicle control and automatic driving. The specific implementation scheme comprises the steps of acquiring driving information of the vehicle; receiving a basic safety message sent by other electronic equipment in the driving environment; determining whetherthe basic safety message is an abnormal message or not according to a pre-trained target message judgment model; and in response to determining that the basic safety message is not the abnormal message, determining a driving strategy of the vehicle according to the basic safety message and the driving information. According to the implementation mode, the basic safety message can be judged, and the tampered basic safety message is prevented from influencing the driving safety of the vehicle.

A system for determining a vehicle queue length in a connected vehicle infrastructure environment includes a vehicle traffic data evaluation module with a processor configured via executable instructions to receive vehicle traffic data of multiple vehicles, the vehicle traffic data comprising basic safety messages, create a geometric representation of a vehicle queue, the vehicle queue comprising one or more segments, each segment comprising a set length, extract data of speed, location, date and time from the basic safety messages, aggregate extracted data with the geometric representation of the vehicle queue, assign a speed value of a basic safety message of a vehicle to a segment when the vehicle is identified to be located within the segment of the vehicle queue, detect a sequence of segments comprising assigned speed values, and determine a vehicle queue length based on the set length of each segment.

A method of assisting a driver of a first vehicle to find an empty parking space, the method including: receiving at the first vehicle V2V communications from at least one other vehicle within a parking area of interest for the first vehicle; analyzing the received V2V communications from the at least one other vehicle to determine potential available parking spaces in the parking area of interest; displaying on a display in the first vehicle one or more available parking spaces in the parking area of interest. The V2V communications comprise dedicated short-range communications (DSRC) technology that includes broadcasting a basic safety message (BSM) up to ten times per second, each BSM indicating a vehicle location, a vehicle heading, and a vehicle speed of the vehicle transmitting the BSM.

This application provides an information transmission method based on the Internet of Vehicles and related equipment, which can enable the first terminal to successfully generate a BSM, so that the second terminal can receive the BSM from the first terminal, and determine the location of the first terminal based on the BSM. The method of the present application includes: the first terminal obtains the encrypted coordinate value of the first terminal; the first terminal generates the first coordinate value and the second coordinate value according to the encrypted coordinate value; the first terminal generates the first coordinate value and the second coordinate value according to the first coordinate value and the second coordinate value The two-coordinate value generates a basic safety message BSM. The BSM includes a mandatory field and an optional field. The mandatory field is used to indicate the first coordinate value, and the optional field is used to indicate the second coordinate value. The first coordinate value corresponds to the required field. range of values; the first terminal sends a BSM to the second terminal; the second terminal determines the encrypted coordinate value according to the first coordinate value indicated by the mandatory field and the second coordinate value indicated by the optional field; The encrypted coordinate value is decrypted to obtain the decrypted coordinate value of the first terminal.

The invention relates to a joint power and contention window size adaptive control (joint Power and Contention window size Adaptive Control, PCAC) algorithm for security applications in the Internet of Vehicles. Dynamically adjust transmission power based on local vehicle density estimation to resolve the conflict between transmission range and interference; zero contention window, minislot method combined with receiver-based implicit acknowledgment mechanism is used to ensure preemptive priority and reliable transmission of emergency messages ; The node estimates the collision rate according to the data packets received from the neighbor nodes. Based on the estimated collision rate, the coarse-tuning and fine-tuning methods are used to adjust the contention window size of the basic security message to improve the throughput of the system. The PCAC algorithm adopts a distributed method without additional communication costs. Through a large number of simulation experiments, it is proved that PCAC can significantly improve the data packet delivery rate and throughput of security services, and reduce transmission delay.

A vehicle warning method based on Vehicle-to-everything (V2X) communication is provided. The method is used in a telematics control unit (TCU) installed in a first vehicle and includes: receiving a heartbeat frequency of a user driving the first vehicle; determining whether the heartbeat frequency is within a normal range; adding a first loss-of-control flag into a first basic safety message (BSM) when the heartbeat frequency is not within the normal range; and broadcasting the first BSM.

The invention provides a vehicle pseudonym replacement method, device and computer-readable storage medium. The method includes that when the vehicle enters the vehicle-mounted self-organizing network, a trusted third party registers the vehicle to obtain a pseudonym and a certificate; the trusted third party registers the base station and the roadside unit to obtain a public key and a private key, and the base station calculates an effective The public key of the base station; when the vehicle enters the signal coverage of the roadside unit, the vehicle and the roadside unit confirm each other's legitimacy; the vehicle applies to the base station through the roadside unit, and obtains a valid pseudonym, certificate and Base station key; if the vehicle is in a driving state, the vehicle will periodically broadcast basic security messages, and pseudonyms will be replaced according to the driving state of nearby vehicles. In this way, without the participation of RSU, the legal pseudonym certificate can be independently calculated through cooperation with the surrounding vehicles; the vehicle can independently judge the conditions of pseudonym change, and enhance the security of the subsequent pseudonym replacement protocol.

The invention discloses an adaptive feedback control method of Basic Safety Message (BSM) in Cooperative Vehicle Safety System (Cooperative Vehicle Safety System, CVSSs). situation, hide the impact of the terminal and the channel bit error rate, and calculate the information dissemination rate (Information Dissemination Rate, IDR) to provide the basis for the prediction model; use the prediction model to give the idealized network performance, and the ideal network state is regarded as To obtain the maximum IDR, the ideal IDR is used as a benchmark to guide the BSM rate adaptive feedback control; the feedback rate control model is used to make the error between the ideal IDR and the actual IDR converge to zero. Compared with the prior art, the present invention fully considers the factors that adversely affect IDR, can improve the real-time vehicle tracking accuracy in different vehicle networking environments and network environments, and improve the robustness of CVSSs under different interference effects.

An apparatus for authenticating a vehicle in a vehicle-to-vehicle communication environment, comprising: a communication unit configured to receive a basic security message and an authentication message from a remote vehicle permitted to participate in the vehicle-to-vehicle communication; and a controller configured to act as the communication unit The remote vehicle is determined to be authentic when at least a predetermined number of authentication messages are received from the remote vehicle within a predetermined period of time, and when the controller determines that the remote vehicle is authentic, permission is generated to utilize the basic security message received from the remote vehicle.

A vehicle warning method based on Vehicle-to-everything (V2X) communication is provided. The method is used in a telematics control unit (TCU) installed in a first vehicle and includes: receiving a heartbeat frequency of a user driving the first vehicle; determining whether the heartbeat frequency is within a normal range; adding a first loss-of-control flag into a first basic safety message (BSM) when the heartbeat frequency is not within the normal range; and broadcasting the first BSM.