4results 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 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 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.