9results about How to "Avoid tailgating" patented technology

The invention relates to the technical field of vehicle control, and discloses a vehicle scheduling method and device, a vehicle and a storage medium, and the method comprises the steps: obtaining the driving state information of a vehicle before the vehicle is driven to an intersection without traffic lights, and obtaining the relative positions and predicted driving path information of other vehicles in a current intersection region; in each sampling period, determining a corresponding multi-objective optimization function based on the traffic interaction scene where the vehicle is located; wherein the traffic interaction scene is determined based on the driving state information of the vehicle and the relative positions and predicted driving path information of other vehicles; constructing a vehicle longitudinal dynamic model based on the driving state information of the vehicle, and constructing a model prediction control problem in combination with a multi-objective optimization function and a safety constraint condition; and solving the model prediction control problem to obtain a target control input sequence in a control time domain, and outputting the first control input quantity in the target control input sequence to an execution mechanism of the own vehicle to realize real-time regulation and control of the own vehicle.

The application discloses a machine room access management method and system, which is applied to an access management system. The system comprises a plurality of access control modules and work cards. The access control modules are used for controlling the opening of a machine room or a cabinet. The work cards correspond to biological feature information one by one. The method comprises the following steps: collecting biological feature information of a staff member through a biological feature recognition module; issuing a communication secret key to the work card based on the biological feature information; and the work card communicates with the access control module based on the communication secret key to control the opening of the machine room or the cabinet.

The invention discloses a method, a system and equipment for preventing vehicle rear-end collision and a computer readable storage medium. The method comprises the following steps: acquiring a lane correlation coefficient, a driver state coefficient, a vehicle state coefficient and a collision prediction coefficient of a target vehicle; calculating a rear-end collision coefficient according to the lane correlation coefficient, the driver state coefficient, the vehicle state coefficient and the collision prediction coefficient of the target vehicle; according to the rear-end collision coefficient, early warning information is sent so as to avoid rear-end collision, the technical problems that in the related technology, the front vehicle cannot obtain the information of the rear vehicle and cannot take avoidance measures when the rear vehicle has an AEB fault or a braking fault, and accordingly rear-end collision accidents are caused are solved, early warning on potential rear-end collision accidents is achieved, and the safety of the rear-end collision accidents is improved. And rear-end collision accidents are reduced.

The invention discloses a vehicle headlamp control method and device, a vehicle and a computer readable storage medium, the vehicle headlamp comprises an illumination module used for illumination and a projection module used for projection, and the vehicle headlamp control method comprises the steps that when it is recognized that the vehicle drives into a tunnel road section, the driving track of the vehicle is obtained in real time; and based on the driving track, controlling a projection module to project a projection image matched with the driving track in front of the driving vehicle. According to the method, the driving track of the current vehicle can be visually known by observing the projection image projected on the ground, visual driving guidance is provided for a driver, attention of other vehicles can be improved, traffic accidents such as rear-end collision can be prevented, and therefore the safety of road driving is overall improved; meanwhile, by means of the control method of the vehicle headlamp, the problem that a traditional headlamp is poor in lighting effect at night or under the condition of poor sight is solved, and the overall science and technology feeling and intelligence feeling of the vehicle can be improved.

The utility model discloses a novel intelligent human passage wing gate, it includes mutually coordinated standard platform and partition platform, is provided with control mechanism and keeps away wing mechanism on standard platform, and the bottom of standard platform is provided with base, and the partition platform is hollow cuboid partition, and control mechanism includes integrated machine box, sets up the identification camera and radio frequency response area on integrated machine box, and keeps away wing mechanism setting in standard platform middle part, and keeps away wing mechanism includes wing board, the connecting shaft of drive wing board rotation, and the motor drive connection of connecting shaft with setting in base. The utility model discloses through many aspects's structure improvement, through the free combination of standard platform and partition platform, can fast configuration single, multi and bidirectional passage, has promoted the disposition flexibility and site adaptability, gathers face recognition, radio frequency identification in an organic whole, supports multiple verification mode, has promoted the traffic efficiency and security.

The invention provides a method and system for preventing rear-end collision of an automobile, and relates to the technical field of vehicle engineering. Comprising the following steps: positioning real-time positions of a vehicle and a target vehicle, and obtaining a real-time circumcircle range of the vehicle and the target vehicle; the distance value between the circumcircle range of the vehicle and the circumcircle range of the target vehicle is calculated, and the collision condition between the target vehicle and the vehicle is determined according to the distance value and the safety distance corresponding to the road type where the vehicle is located; and when the collision risk exists between the target vehicle and the vehicle, performing anti-collision control on the vehicle. The distance between the vehicle and the front vehicle is monitored in real time by calculating the circumcircle of the vehicle and the front vehicle, meanwhile, the taillights of the front vehicle are recognized in real time, and rear-end collision caused after sudden braking of the front vehicle is avoided.

The application provides a hot-rolled seamless steel pipe sawing distribution optimization method, and relates to the technical field of mechanical automation control. The method first collects basic data such as the discharging sequence, total length, head and tail cutting amount, specification parameters and equipment information of the steel pipe, and sets control strategy parameter set; then constructs a dynamic sliding window with the cold bed discharging sequence, generates all feasible instant cutting groups and delayed schemes; then establishes a unified cutting loss model, and calculates and evaluates all feasible distribution schemes to obtain a unified evaluation value; selects the scheme with the minimum evaluation value as the optimal decision; finally, the execution instructions are issued to the conveying and sawing equipment one by one, and the sliding window is pushed forward according to the maximum cut sequence number after cutting, and the cycle is continued. The application can automatically distinguish the empty row strategy and the full load strategy among steel pipes of different specifications, significantly reduce the cutting loss while keeping the stable rhythm of multiple group sawing, and improve the yield and overall production efficiency.

The invention provides a tunnel safety prompting system and method based on real-time vehicle speed, and belongs to the technical field of driving safety guidance. The tunnel safety prompting system comprises a vehicle speed information prompting screen arranged outside a tunnel entrance, a first group of vehicle speed detection equipment arranged on a detection support outside the tunnel entrance, and a second group of vehicle speed detection equipment arranged on a detection support outside the tunnel entrance; the vehicle sensors are arranged on the two sides of a road between the outside of the tunnel entrance and the tunnel entrance in a partitioned mode, the second set of vehicle speed detection devices are arranged at a plurality of positions inside and outside the tunnel respectively, the lane changing acousto-optic warning indicator is arranged on the outer wall of the tunnel, and the second vehicle information processor is arranged on the wall of the tunnel entrance; the first vehicle information processor is arranged on a tunnel entrance wall body; according to the invention, acousto-optic guidance can be carried out on vehicles which do not change lanes in time, the speed difference between the vehicles can be reduced by carrying out optimal speed prompt on the vehicles entering the tunnel in advance, meanwhile, the driving influence caused by a black hole effect when the vehicles enter the tunnel is reduced, and traffic accidents are effectively avoided.

The present invention relates to a safety monitoring and early warning system based on distance detection applied in the field of monitoring and alarm technology. The system can monitor the vehicle distance of three adjacent high-speed vehicles located in the same lane in real time. When a rear-end collision risk occurs, the three vehicles can be warned in time. For the driver of vehicle B that is about to rear-end vehicle A, the system can remind the driver to slow down in time, so as to adjust the vehicle distance to a safe following distance. When vehicle B fails to operate in time, vehicle A can be warned to change lanes for self-rescue. When changing lanes, the rear alarm and intelligent control turn signal of vehicle B can be triggered to light up automatically, and then vehicle C behind vehicle B and vehicles in adjacent lanes can be warned of the risk of rear-end collision between vehicle A and vehicle B and the lane change of vehicle A. Compared with the prior art, the system can warn of the possible risk of rear-end collision before the rear-end collision, provide the leading vehicle with sufficient self-rescue time, effectively avoid the occurrence of rear-end collision, and greatly reduce the safety hazards of continuous rear-end collision.