39results about How to "Priority" patented technology

The invention discloses an optimization method for signal coordinated control of a dedicated bus lane at an adjacent intersection. The present invention is based on the calculation formula of the minimum and optimal signal period of Webster delay, and adopts the maximum value of the optimal signal period duration for coordinated control of each intersection as the common period duration; combined with the principle of equal saturation, the green light duration of each phase is optimized; assuming that the upstream intersection is coordinated The time when the phase green light is turned on is 0, and the requirement that the first vehicle and the last vehicle of the bus fleet arrive at the downstream intersection is at the time of the green light is transformed into a constraint condition; the width of the green wave belt is coordinated and controlled, and the maximum width of the green wave belt is the optimization goal. Establish a coordinated control optimization model based on the bus fleet; calculate the recommended speed value of the pre-command information board according to the optimized signal cycle duration and the optimized green light duration; Traffic efficiency is of great significance.

A smart traffic light control system, comprising a cloud platform and each traffic node connected to the cloud platform, each traffic node comprising a plurality of vehicle control signal lights and / or pedestrian control signal lights, the traffic node being equipped with a communication module, the cloud platform controlling the indication state of the vehicle control signal lights and / or pedestrian control signal lights by means of the communication module in order to control the allowable passage time, and the time control policy of each traffic node comprising a vehicle policy and a pedestrian policy; the traffic node is provided with a body sensor, and when the body sensor detects a pedestrian, the corresponding vehicle control signal light and pedestrian control signal light are controlled by the pedestrian policy; and when the body sensor has not detected a body for a certain period of time, the corresponding vehicle control signal light and pedestrian control signal light are controlled by the vehicle policy.

The invention discloses a signal regulating method for a pedestrian crossing road section of bus prior passage. The signal regulating method for the pedestrian crossing road section of bus prior passage comprises the steps of step10, collecting traffic information of pedestrian crossings, step20, starting pedestrian crossing control, recording a moment when an accumulative number, collected by dynamic real-time data in the step10, of the pedestrian crossings changes from 0 to 1, carrying out step30, and staying in the step20 until signal regulation is finished when an accumulative number, collected by the dynamic real-time data in the step10, of the pedestrian crossings does not change from 0 to 1, step30, determining a starting moment of a pedestrian crossing green light, step40, determining the required number of the pedestrian crossings, step50, determining an end moment of the pedestrian crossing green light, and step60, carrying out signal switching, switching pedestrian crossing signals after the end moment of the pedestrian crossing green light, switching a pedestrian crossing signal into a red light signal, and returning to the step20. The signal regulating method for the pedestrian crossing road section of bus prior passage combines pedestrian crossing green light signals and bus real-time operation in the process of bus operation, and improves the operation efficiency of a public traffic system and the traveling efficiency of passengers.

The invention discloses a layout method for preferentially controlling the position of a detector at a tram intersection, which comprises collecting basic tram running information, dividing the distribution interval of the tram arrival time, and calculating the time for the tram to stop at the intersection and wait for a green light 1. Determining the positional relationship between the detector, the stop station and the upstream adjacent intersection, and designing the layout position of the detector in five steps. According to the intersection priority control strategy of the tram and the time distribution of the tram to the stop line, the inventive method divides the situation of the tram waiting for the green light into seven categories, proposes various calculation methods for the waiting time of the green light, and then fully considers Tram acceleration and deceleration time, station stop time and road section travel time, and based on the analysis of the positional relationship between the detector, the station and the upstream adjacent intersection, a calculation model for the layout position of the detector is established, so that the tram intersection The priority control detector layout position has the best probability to realize the priority of tram crossing.

The invention discloses a method for selectively extracting lithium from waste lithium ion battery materials, and belongs to the technical field of comprehensive recovery of lithium ion battery materials. The present invention oxidizes and roasts positive electrode material powders such as lithium iron phosphate obtained by dismantling and crushing waste lithium-ion batteries, mixes the obtained calcined sand with water, and adds an appropriate amount of calcium chloride or lime milk solution for reaction transformation. Lithium is selectively extracted into solution, thereby achieving separation from manganese, iron, aluminum, phosphorus, etc. The method can realize the preferential and selective extraction of lithium, the obtained lithium solution has high purity and lithium concentration, no extraction and impurity removal, evaporation and concentration processes are required, the lithium recovery and product preparation process is simple, the recovery rate is high, the energy consumption is low, and there is no Environmental problems of high concentration sodium salt wastewater.

The invention discloses a command control system and a command control method of seafloor mine deep trackless transportation. The command control system comprises a server, a plurality of base stations arranged underground, a plurality of signal lamps and vehicle-mounted consoles, wherein each base station is connected with the server by means of a communication connection member; the vehicle-mounted consoles are installed on transport vehicles; the signal lamps and the vehicle-mounted consoles communicate with the server by means of the base stations; ad the server receives driving dynamic information of the vehicle-mounted consoles, obtains control instructions through data processing and logical decision and transmits the control instructions to the vehicle-mounted consoles and the signal lamps, so that underground vehicles complete transportation according to the command of the signal lamps. The command control system and the command control method avoid the interference problem that the transport vehicles are liable to collide and the like in the multi-layer transportation and three-dimensional transportation process, improve the transportation efficiency and reduce the running cost.

The invention discloses a prior control method for a bus rapid transit signal during traffic peak duration. By comprehensively considering prior traffic requirements of bus rapid transit vehicles and basic traffic constraints of non-prior motor vehicles, non-automatic vehicles and pedestrians, the prior traffic of the bus rapid transit vehicles is realized on the basis of guaranteeing normal operation of intersections. The specific method comprises the steps of firstly, collecting basic data including rapid bus route information, intersection traffic flow and flow direction information, intersection canal design and signal timing plans and the like; secondly, constructing a non-prior phase minimum green light requirement time and signal prior control model; and finally, according to the time of reaching the intersections of a bus rapid transit, calculating real-time green light time of each phase and generating a bus rapid transit signal prior control scheme. The method is simple and practical, great in stability and wide in application range and can be widely applied to engineering practice.