32 results about "Basic safety message" patented technology

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.

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 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 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.