5 results about "Bus priority" patented technology

This invention provides a method, device, terminal, and storage medium for bus priority control at multiple intersections. The method includes: acquiring the approach lane status of each approach lane at each intersection within a target area at the current time, and the traffic light prediction model for each intersection; determining the target bus closest to its current intersection on each approach lane, and acquiring the bus status and bus prediction model for the target bus at the current time; predicting the traffic light phase status of each intersection at the next time based on the approach lane status, bus status, and traffic light prediction model; and predicting the bus acceleration corresponding to each target bus at the next time based on the approach lane status, bus status, and bus prediction model. This application can adjust the traffic light phase status and bus acceleration using traffic light prediction models and bus prediction models in a multi-intersection environment, thereby improving bus traffic efficiency.

This invention discloses a method for implementing priority for multiple bus routes under coordinated control. The method first establishes a bus priority request list, starting with the time a bus approaches the intersection and ending with the time it leaves the stop line. Then, it calculates the expected adjustment value and adjustment stage number for all requesting buses. Next, without disrupting coordination, it calculates the adjustable range for each bus before it reaches the stop line. Finally, with the goal of minimizing the waiting time for all buses at the intersection, and based on the first-come, first-served principle, it adjusts the duration output of the current stage to reduce bus waiting time. This method improves bus operating efficiency while considering the start time and release time of the coordination stage.

The invention provides a bus signal priority compensation control method and system based on green wave band protection. The method comprises the steps that trunk line green wave coordination parameters are acquired; collecting road traffic information, traffic signal state information and vehicle running state information; judging whether a bus priority triggering condition is met or not according to the collected information; when the trigger condition is met, executing a bus priority strategy, and determining additional phase time increased by the strategy in the current signal period; executing a phase compensation mechanism which specifically comprises the following steps: judging whether a non-coordinated phase has enough compensation capability in a current period; if there is enough compensation capability, compensation of the additional phase time is completed in the current period; and if the compensation capability is not enough, performing partial compensation by using the available compensation time of the non-coordinated phase in the current period, and distributing the residual disturbance time to the subsequent one or more periods to gradually complete compensation. According to the invention, the operation efficiency of buses and the overall traffic capacity of urban traffic are improved.

The application relates to the technical field of dual-mode communication, and specifically provides a dual-mode adaptive communication method based on wM-Bus and LoRaWAN and an intelligent meter, which comprises the following steps: configuring and initializing a working mode, wherein the working mode comprises a wM-Bus priority mode, a LoRaWAN priority mode and a dual-link concurrent mode; initializing running parameters for the current working mode, wherein the running parameters comprise wM-Bus running parameters and LoRaWAN running parameters; performing RTC wake-up and checking whether a wM-Bus sending interval or a LoRaWAN network access time is reached; if yes, performing a conflict prevention mechanism sub-process; and adaptively or manually adjusting the working mode according to a LoRaWAN network access state or wM-Bus communication demand. The device can automatically switch to an optimal mode according to an actual scene and link quality, so that the quality of a communication link can be ensured, and redundant power consumption caused by simultaneous work of the dual communication can be avoided.

The application relates to the technical field of traffic management, in particular to an intelligent networked bus priority control method and device for a signal-free intersection, wherein the method comprises the following steps: obtaining the vehicle state of a vehicle driving in an observation area of the signal-free intersection; then inputting the vehicle state into an upper-layer passing time optimization model, taking the weighted sum of bus vehicle delay and non-bus vehicle delay as the target, outputting the vehicle passing time and the recommended passing speed; then inputting the vehicle passing time and the recommended passing speed into a lower-layer trajectory planning model, taking the minimum vehicle energy consumption as the target, outputting the optimized acceleration sequence of each vehicle in the control area of the signal-free intersection, so as to control the vehicles to drive into and drive out of the interlaced area of the signal-free intersection. Thus, the problems that the passing right allocation mechanism of the related art lacks explicit support for the bus priority strategy, and it is difficult to effectively guarantee the bus priority passing in the mixed traffic flow environment and reduce the bus delay are solved.