255results about How to "Reduce the number of stops" patented technology

A catalyst for synthesizing vinyl acetate from acetylene and acetic acid is prepared from activated carbon, zinc acetate and alkaline bismuth carbonate in mass ratio of 100: (27-40): 0.026 by excessive solution dipping method.

The invention discloses an optimal control method for intersection group traffic flow, which resolves the defect that the smallest unit of current urban traffic control is a single intersection, which cannot satisfy the needs of actual traffic control, can realize the optimization of local traffic flow, and provides helps for micro control of traffic flow. The steps of the method are:(1) real time acquiring actual traffic flow of ''intersection group'' on roads through a ground induction coil which has been paved in a city; (2) constructing an optimal control model with a smart approach and inferring and optimizing the parameters of a controller according to real-time traffic information;(3) the controller carrying out optimal control for traffic flow according to the control model.

The present invention relates to an intersection signal control method based on multiple intelligent agents, and belongs to the intelligent traffic intersection control technology field. The method realizes the traffic information real-time dynamic sharing by respectively establishing the intelligent agent models of the traffic entities, such as the vehicles, the road sections, the intersections, the signal lamps, etc., and by utilizing the interactivity and the coordinated cooperation among the multiple intelligent agents, and concretely comprises the three links of the signal cycle optimal regulation and control, the phase conflict green light signal control and the vehicle speed guide auxiliary control. The method can obtain the individual operation state of each vehicle intelligent agent real-timely, and can realize the dynamic interaction between the vehicle intelligent agents and a traffic control system via the speed guide. Meanwhile in allusion to a multi-intelligent agent traffic environment, the caused green light time waste is considered when no vehicle passes at the current phase while a whole phase cycle is optimized, the collision is avoided, and the total number of the vehicles passing the whole intersection is increased by switching to the conflicting phases, the queuing waiting time of the vehicles in phase conflict is reduced, and the average delay of the intersection and the parking times can be reduced effectively.

The invention relates to the technical field of logistics, particularly to a logistics center storage position allocation method. The method comprises the following optimization steps: calculating goods correlation; clustering and analyzing goods; allocating clustered goods to storage areas; allocating goods to specific goods positions and finely adjusting the storage of special goods according to the characteristics of the goods. The method reduces the operating time for a warehouse and improves the operating efficiency of the shelf-type warehouse without increasing equipment investment, by optimizing a logistics center storage position allocation management system, using the shelf-type warehouse center as a research object, optimizing the goods position allocation of the warehouse and beginning with optimization management and dispatching of the warehouse.

The invention discloses an intelligent traffic control device, and belongs to the field of intelligent traffic control. The intelligent traffic control device comprises a plurality of vehicle identification cameras, the vehicle identification cameras are respectively installed at the positions of the vehicle entry direction of each road of an intersection and respectively connected to a traffic controller, and the traffic controller is also connected with a traffic light of the interaction in each direction; the vehicle identification cameras acquire and calculate statistical data including number and running speed of vehicles in each direction of the current intersection and the like, the traffic controller carries out optimal calculation according to the current statistical data, and then the traffic lights of the intersection are controlled according to the calculation result and can be adjusted in real time according to the vehicle condition in each direction, so that the traffic lights are synchronous with vehicles, the stop frequency and time of vehicles are reduced as much as possible, and the existing road resources are sufficiently utilized; and the traffic pressure can be effectively relieved, and the device is particularly suitable for being installed and used at urban easily-crowded intersections and thus has a wide application range.

The invention relates to a whole-journey independent phase green wave induction control method and a system of traffic flow, belonging to the technical field of traffic signal control. The method comprises the steps of: setting vehicle sensors and waveband signal indicator lamps along a road, setting parallel road induction stream signal indicator lamps and buffering yellow waveband signal lamps at intersections, transmitting a traffic flow signal and a green wave band control signal in a wireless manner, transmitting a traffic flow pulse signal to a computer for processing and pre-grouping the traffic flow, emitting a pre-grouping signal command, periodically turning on the waveband signal indicator lamps along the road to form a movable green wave band so as to guide the vehicles to travel and group the traffic flow, and matching the intersection signal lamps to realize whole-journey independent phase green wave induction control of the traffic flow. The system comprises a traffic flow signal collecting, traffic flow signal processing and controlling device, intersection signal lamps and control cabinets of the intersection signal lamps, the vehicle sensors and the waveband signal indicator lamps are arranged along the road, and the sensors and the indicator lamps are in wireless connection with the signal processing and controlling device. The method and the system, disclosed by the invention, have the advantages of realizing phase difference independent green wave band induction of vehicles and improving the intersection passing efficiency, etc.

The invention relates to a traffic signal coordination control optimization method for an emergency rescue vehicle driving path. The method comprises emergency rescue prioritization, path type classification, signal priority control, signal coordination control, and a bi-level programming model; relevant coordination control research on paths is conducted; first, emergency rescue characteristics and objects are analyzed, research on upper level dynamic phase difference and lower layer path green wave coordination in different path forms is conducted, and relevant case analysis and verificationare performed. The method disclosed in the invention is characterized by real time performance, traffic signal coordination priority control over an emergency rescue path can be exerted based on timewhen an emergency rescue team reaches a crossroad and real time vehicle load information of general vehicles, emergency rescue response time can be shortened, and casualties and property loss can beeffectively reduced.

The invention relates to the field of traffic control and particularly discloses a dynamic coordinated control method for the bidirectional different requirements of a trunk road. The method comprises the following steps of (1) calculating a key intersection largest in traffic flow according to the historical data of a detection coil; (2) determining a plurality of different coordination strategies according to the different traffic requirements in the up and down directions of the key intersection, and calculating a coordinated timing plan in different coordination strategies through constructing a model; (3) finally, according to the traffic flow monitored in real time, voting and determining an optimal coordination strategy. According to the invention, the method can meet different traffic requirements in the two ways of a trunk road. By adopting the method, the traffic efficiency of the trunk road can be effectively improved, and the traffic jam of the trunk road can be relieved. Therefore, the travel time of citizens can be saved. Meanwhile, the energy consumption of vehicles can be saved, and the pollution of the traffic environment can be reduced.

The invention discloses a high-efficiency bus scheduling method and device, belonging to the field of control systems. The method comprises the following steps of: collecting real-time information of destination stations of passengers from bus stations; displaying a current position of a bus on a bus station board; optimizing a departure interval and judging if the number of direct buses for an appointed station is increased by a bus control center according to received passenger destination information. Whether the bust stops or not at next station is decided according to the information about whether passengers get off the bus at the next station or not, which is collected in the bus, and the information about whether passengers get on the bus at the next station, which is received from the control center. The system comprises a subsystem module for collecting passenger destinations from the bus station boards, a subsystem module for dynamic bus scheduling and a subsystem module for intelligent stop judgment.

The invention relates to a bus signal priority control method based on an RFID vehicle-mounted electronic label. The RFID electronic label is a taken as an information intermediary, and a bidirectional communication between public transport vehicles and a crossing control layer can be established; through guiding the public transport vehicles to reach and pass across a crossing appropriately, the road section travel speed of the bus is changed from priority model input to model output, and a signal control system is converted from adapting to the arrival of a traffic flow passively to guiding the traffic flow to arrive at and pass across the crossing, thereby giving full play to the efficiency of a control model and realizing maximization of system benefit; considering from the aspect of controlling the crossing control layer of the system, signal timing plan, suggested speed, station lingering time and other control parameters and the like core jobs are calculated, and a priority control scheme can be carried out through the communication with the RFID electronic labels, so that efficiency of processing priority algorithm of the crossing control layer can be improved, average vehicle delay and average parking frequency of the public transport vehicles are reduced to the maximum degree, and green time utilization rate is improved.

The invention relates to a management, induction and control system of urban traffic, which solves a problem of technology integration of a traffic signal control subsystem, a traffic induction display subsystem, a traffic monitoring subsystem and a mobile early-warning subsystem of the intelligent early-warning subsystem. The invention is characterized in that: a traffic database is in bidirectional connection with the traffic signal control subsystem, the traffic induction display subsystem, the traffic monitoring subsystem and the mobile early-warning subsystem and a traffic information issuing subsystem; and multi-source data fusion of detectors, which includes a microwave probe, a video probe, an ultrasonic probe, a geomagnetic coil, a wireless geomagnetic head, and a geomagnetic detecting head and the like. The beneficial effects are as follows: various data formats are converted into a format of a same standard; the share of traffic basic data and historical data is allowed; the levels of intellectualization, informatization and visualization of urban traffic management are improved; stop frequency is reduced, travel time is shortened, and discharge of automobile exhaust isreduced; and reliable guarantee is provided for energy conservation and travel safety.

The invention provides a video tracking type detection method and system capable of reducing the stop frequency at an intersection. According to the video tracking type detection method and system capable of reducing the stop frequency at the intersection, each vehicle passing through the intersection is tracked continuously through a video tracking unit with the video tracking function, the speed and the position of each vehicle can be detected accurately, the time when each vehicle reaches a monitoring position of a next intersection under the condition that the vehicle runs at the current speed can be judged, and the problem that the current states of the vehicles can be detected only on the cross section of a position near a stop line at the intersection or a position certain distance away from the stop line at the intersection at present is solved. In addition, by the adoption of the video tracking type detection method and system capable of reducing the stop frequency at the intersection, it can be guaranteed that a green light turns on before a vehicle stream reaches the stop line at the intersection after the direction with the large flow is judged accurately judged. In this way, the frequency that the vehicles in the direction with the large traffic flow encounter red lights is reduced, and the stop time of the vehicles in the direction is shortened.

The invention discloses a reversible short lane signal control method based on intersection vehicle in-turn release. According to the method, four inlets in the east, south, west and north at an intersection are respectively provided with one segment of reversible short lane by utilizing opposite lanes, four outlet lanes are respectively provided one set of reversible short lane indicating lamps, right sides of stop lines of the four inlets are respectively provided with one set of left turning pre-signal lamps, main signal lamps at the intersection employ a clockwise or anticlockwise in-turn release four-phase mode for all vehicles at each inlet lane, phase difference between the main signal lamps and the left turning pre-signal lamps is set, and the reversible short lane indicating lamps and the left turning pre-signal lamps realize simultaneous conversion; phase difference between main signals and left turning pre-signals is coordinated, public period duration and green light distribution time are calculated, conflicts between a left turning traffic flow and an outlet lane traffic flow are controlled in the time aspect, left turning traffic flow jam caused by improper time distribution is avoided, inlet and outlet land resources are fully utilized, the lane number of inlet lanes is enhanced, and passing capability of the intersection is improved.

The invention discloses a traffic light green-wave vehicle speed inducing method and system based on V2I. A data processing unit obtains a speed suggestion value or interval, namely the green-wave vehicle speed, when the real-time distance L of a traffic light and vehicles, the corresponding vehicle speed V, and the display state and countdown time of a traffic light of a downstream crossing are collected by a collecting unit; a display unit displays the display state and countdown state of the traffic light of the downstream crossing and displays the speed suggestion value or interval obtained by the data processing unit; by means of the vehicle-road real-time bidirectional communication under the vehicle-road coordinative environment, through the state of the vehicles and the state of the traffic light of the downstream crossing where the vehicles are driven, the reasonable passing speed of the vehicles is calculated, the average travel time, average delay time and average parking frequency of the vehicles are effectively reduced, the passing capacity of the vehicles can be improved within the green-wave vehicle speed range, and meanwhile the time for waiting for the red light atthe crossing is shortened. The system is simple in structure and convenient to control and greatly improves the passing capacity of the road vehicles.

An adaptive traffic control subarea dividing method based on spatial data mining belongs to the field of traffic technology. The method aims to settle a problem of relatively low outgoing efficiency of a control area which is divided by an existing control subarea dividing method. The method comprises the steps of firstly performing characteristic extraction on a peak time period, a valley time period, a high flow threshold, a middle flow threshold and a low flow threshold, selecting a traffic information characteristic which affects dividing of the control subarea; then establishing an influence weight calculating model based on a time-space characteristic, obtaining the weight of a characteristic r, and finally realizing traffic control subarea based on a weighted commodity detection algorithm divided by a dynamic module degree. The adaptive traffic control subarea dividing method is suitable for dividing the traffic control subarea.

The present invention discloses a traffic control system for whole segments of a main street based on big data, wherein the main street comprises first to N-th crossings. The traffic control system comprises: a computer control subsystem; first to N-th positioning and flow density acquisition apparatuses which are respectively arranged in the first to N-th crossings and are respectively used for acquiring first traffic flow information about vehicles which will pass the crossing to which the positioning and flow density acquisition apparatus belongs in a first direction in real time and transmitting the first traffic flow information to the computer control subsystem; wherein the computer control subsystem is used for performing analysis according to the first traffic flow information to obtain a first traffic flow density and a first average speed of the vehicles passing the current crossing, calculating the time spent by the vehicle in the first direction in driving from the current crossing to the next crossing according to the first average speed and the distance from the current crossing to the next crossing, and controlling the turn-on time of a green light at the next crossing according to the time, so that the vehicles passing the current crossing in the first direction can pass the next crossing conveniently and smoothly until the vehicles in the first direction pass the N-th crossing on the main street.

The invention discloses an inlet individually passing type truck road green-wave coordination design method suitable for driving speed fluctuation. The method includes the steps of determining signal phase sequence of each intersection in a truck road, determining the green time ratio of different phases of each intersection in the truck road, determining the value of a common signal period of the truck road, calculating speed fluctuation percentage of adjacent intersections of the truck road, establishing a green-wave coordination control model that meets the driving speed fluctuation, solving the green-wave coordination control model, and obtaining the green-wave coordination control parameters. A coordination control scheme, which meets the requirement of no traffic jam when vehicles in the head of a fleet drive at a high speed and the last vehicles of the fleet drive at a low speed, can be generated, so that more vehicles can pass through an intersection without braking.

The invention discloses a rapid shuttle single-tunnel double-decker subway, a train running space configured by shuttle tunnels with a upper and a lower track and double stereo train stations, the subway herein requiring less land occupation and digging work load. According to the subway herein, lines are composed of express lines, train stations, and launching lines, allowing separation of trains which are running from trains which stop for allowing passengers to get on and get off. The subway herein allows changes to train tracking operation, launches of express shuttles as needed, reduction of stops, and increasing of train operating density and running velocity. The subway herein also allows using train hooks to conduct rapid train re-arrangements, increasing train re-arrangements in peak time, operating non-stop trains or limited-stops trains so as to increase passenger capacity. The subway herein further allows decreasing of train re-arrangements in normal time or low peak time in a manner whereby trains stop at each and every train station so as to reduce operation cost. According to the subway herein, a recessed bottom train frame structure is adopted in the train for reducing train height and center of gravity, and tunnel diameter is decreased. By planning of different passenger capacities, selecting different train re-arrangements, and adopting various running patterns based on passenger flow time frames, the subway herein obtains an improved cascade-type passenger capacity ranging from 10,000 to more than 90,000 per hour for a single direction. The rapid shuttle single-tunnel double-decker subway of the invention adjusts to capacity demands in megacities, and can reduce starting-point requirements for building subways, like size of city passenger flow and population.

The invention discloses a traffic organization design and control improvement method of intersection passing capacity and road net traffic content in the traffic design and control domain, which is characterized by the following: adapting main road junction peripherial road net to form a micro-circulation system to finish steering task of each direction; adapting the ways such as í‹stop turning left or rightíŒ, í‹one way runningíŒ and so on to simplify the traffic intersection collision to improve the traffic intersection passing capacity; utilizing í‹green waveíŒ to reduce the parking frequency and driving delay. The program is fit for mutual matching of different grades, which realizes the city traffic harmonious development.

The invention discloses an intersection traffic control method based on a tramcar active operation control system. The control system comprises an information acquisition module, a processing module and a publishing module. The control method comprises the following steps of starting the guiding process, and judging whether a tramcar enters a control area or not based on tramcar running data; based on tramcar running data, signal timing data and road data, judging the signal state of the tramcar which is running to a downstream intersection; according to the result of the previous step, correcting the reasonable running speed of the tramcar; judging whether a calculation result meets the condition or not; sending the calculation result to a corresponding tramcar by means of the publishing module to adjust the running speed of the tramcar; and controlling the tramcar to pass through the intersection. According to the technical scheme of the invention, the dynamically optimized running speed prompt information is provided for the driver of the tramcar by means of a tramcar-mounted display terminal. Therefore, on the premise that other vehicles on the road are not influenced at all, the tramcar is enabled to pass through the intersection in the green-wave manner.

The invention relates to a system and a method for achieving multi-priority special vehicle semaphore control based on RFID. The system comprises a plurality of RFID receiving ends, information conversion equipment and traffic semaphore controller, wherein the RFID receiving ends are arranged in positions in distance preset by the system from parking lines in the inlet direction at intersections in corresponding distance; the information conversion equipment is used for converting vehicle information received by an RFID receiving end into main node signals which are transmitted to the traffic semaphore controller; the traffic semaphore controller is used for controlling traffic signals according to the main node signals. By adoption of the system and the method for achieving multi-priority special vehicle semaphore control based on RFID, an RFID technique can be combined with a traffic signal control technique, public traffic vehicles and other special vehicles can be controlled and released according to different priorities, the traffic control effect is remarkable, the times that carrier vehicles stop at the intersections are reduced, remarkable benefits can be made, and the system and the method are applicable to large-scale popularization and application.

The invention provides a main line full traffic control system, comprising a comprehensive traffic management platform, a crossing traffic signal control subsystem, a video monitoring subsystem, a roadside traffic information display subsystem, a in-car traffic information display subsystem, and an information transmission system. The comprehensive traffic management platform realizes sharing of information and integration of functions through collecting information of each subsystem, and realizes coordinated interaction among the subsystems, thereby effectively integrating traffic information resources. The system can reorganize and maintain arterial road traffic order, provides accurate and rational green wave band timing plans, guides drivers to drive according to rules, and has important effect on improving traffic signal control efficiency.

The invention discloses an implementation method and system for a bus passing by a station where no passengers get on and off without stopping. The system comprises a platform input panel, a get-on passenger information indicating lamp, a get-off feedback button, a get-off passenger information indicating lamp, a voice player and an information transmitter are arranged in a bus, and a bus total terminal is arranged on a bus total station; after a passenger inputs a needed bus path through the platform input panel, the station and the bus path are sent to the bus total terminal, and the bus sends the path position of the bus to the bus total terminal in real time; the bus total terminal selects a bus which is closest to the passenger path position to send passenger get-on information according to the received information; after the information transmitter of the bus receives the passenger get-on information, or when the passenger of the bus presses the get-off feedback button, a driverinformation receiving device in the bus can light up the corresponding get-on information indicating lamp and get-off information indicating lamp and plays get-on information and get-off information to a driver through voice, and the driver stops at a front platform. The implementation method and system have the advantages that the bus station-passing efficiency can be improved, energy is saved, the trip time is saved, and the riding satisfaction of the passenger is improved.