191 results about "Punctuality" patented technology

A system is provided for managing the inbound flow of aircraft to an airfield by ensuring that aircraft are sequenced before departure into an arrival stream. Sequencing uses operational data obtained from airlines and then provides a methodology for sharing this data with the air traffic control (ATC) agency. The outcome is a daily arrival schedule providing a predetermined operational arrival time for each aircraft movement. The operational data used by the system relates to airline punctuality, taxi times at departure airfields and actual flight times predicted on a flight-by-flight basis by airline flight planning systems. This information is combined to effect a predictive arrival time at a desired navigational fix.

The invention discloses a logistic information real-time management method and a system. Defined barcode information is read by a barcode data acquisition terminal so as to obtain node information of goods or order forms, a customized information recording interface of a user is set, definition setting of a database and maintenance of a database capacity interface are realized, a current state is automatically prompted when data are dispatched or selected, particular capacity information of a memory space is dynamically updated when goods are taken, all database capacity is automatically prompted dynamically and visually, comparison of a data condition provided by a user and an actual condition of current basic data is automatically prompted according to analysis of category and state of data, receipt details for dispatching the data are generated automatically, and detailed data information of a dynamic link is synchronously obtained from a database server and displayed and outputted in a node information form. By the aid of the logistic information real-time management method and the system in the technical scheme, intelligent logistic management and service punctuality are realized, and predictability is improved.

The invention relates to a control method and a system for intersection signal timing guaranteeing the priority of buses. The system adopts an ultrahigh frequency RFID (Radio Frequency Identification) technique to achieve the remote recognition, acquisition and control of information of an onboard unit; and adjusting an intersection signal timing scheme through an optimization algorithm by collecting the information of buses in all direction of an intersection, so as to provide control of passing priority for buses. The control method solves the bus priority mode on common urban roads, and realizes the bus passing priority on the basis of maximizing the overall operation efficiency of vehicles at the intersection, so as to improve the operation efficiency of buses. In addition, the control method is low in cost and convenient to implement and becomes effective fast, and achieves the win-win of the bus priority and the overall operation efficiency of the intersection, so as to reduce delays of buses at urban intersections and ensure the punctuality of buses.

A system is provided for managing the inbound flow of aircraft to an airfield by ensuring that aircraft are sequenced before departure into an arrival stream. Sequencing uses operational data obtained from airlines and then provides a methodology for sharing this data with the air traffic control (ATC) agency. The outcome is a daily arrival schedule providing a predetermined operational arrival time for each aircraft movement. The operational data used by the system relates to airline punctuality, taxi times at departure airfields and actual flight times predicted on a flight-by-flight basis by airline flight planning systems. This information is combined to effect a predictive arrival time at a desired navigational fix. When used in conjunction with an optimised sequencing process for the final arrival time, the system then creates a Tactical Arrival Time (TAT) for an individual flight. Airlines share proportionally in a measure of departures from requested TATs, such measures being optionally weighted.

The invention discloses a train energy-saving operation target speed curve optimization method comprising the following steps that S1, an optimization target is divided into multiple modes based on a hierarchical optimization method, and a mode switching relationship between any two adjacent modes is calculated based on a mode switching satisfaction area; S2, the speed value of a first constant speed mode and the speed value of the switching point of switching to a braking mode from a first coasting mode are calculated according to the mode switching relationship; S3, the position coordinates of the switching point of switching to the first coasting mode from the first constant speed mode are reversely calculated based on a two-way iterative method; S4, an initial target speed curve is obtained; S5, as for any one steep slope section, the part corresponding to the steep slope section in the initial target speed curve is optimized based on an average speed equivalent method; and S6, the target speed curve is optimized based on a multi-target satisfaction optimization method. Energy saving performance, punctuality, stability and safety of train operation can be effectively enhanced by the optimization method.

An anti-cheating interference signal processing method of a GNSS time service type satellite receiver is disclosed. The method comprises the following steps of stepS1, using a satellite to broadcast time information of a message so as to carry out mutual examination, receiving a GNSS satellite signal of multi-mode multi-frequency points, and detecting whether there is performed signal cheating for satellite time information, if there is the signal cheating, using a punctual time method to carry out an anti-cheating action, and if there is not the signal cheating, entering into a stepS2; stepS2, detecting whether adjacent time difference value of a local clock difference is greater than a preset threshold, if the adjacent time difference value of the local clock difference is greater than the preset threshold, determining that there is signal cheating which is performed aiming at time service precision so that a satellite receiver uses an automatic position maintenance function and enters into a clock punctuality state or indicates that a time service is unavailable; and if the adjacent time difference value of the local clock difference is not greater than the preset threshold, determining that there is no cheating-type interference signal and withdrawing a program. In the invention, telegraph text comparison, time punctuality, automatic position maintenance and other methods are used so that a purpose of an anti-cheating time service type satellite receiver is reached. A realization mode is simple and is easy to process and product cost is not increased.

The invention provides a train timing energy-saving running method based on a Pareto multi-target genetic algorithm. The train timing energy-saving running method based on a Pareto multi-target genetic algorithm includes steps: establishing a train running energy consumption calculation model by setting the line data and train parameters for train running; taking train traction energy consumption and section travel time as the optimization target, establishing a timing energy-saving optimization model for train running, and using the Pareto multi-target genetic algorithm to solve the optimization model to obtain the non-dominated solution set of a group of train running strategy; and according to the set train section travel time, selecting the punctual and the most energy saving train running strategy, and obtaining the corresponding speed curve and the energy consumption curve. The train timing energy-saving running method based on a Pareto multi-target genetic algorithm can effectively improve the accuracy for train timing energy saving optimization, and is high in the optimization speed, and also has the advantages of being wide in the optimal solution searching scope, reducing the energy consumption of the train, and improving the punctuality for train running.

The invention provides a method for controlling train operation on the basis of train operation grades. The method includes determining a plurality of operation grades by the aid of ATS (automatic train control) systems according to train operation plans and control targets when trains are operated between stations, generating recommended speed curves by the aid of ATO (automatic train operation) systems and storing the recommended speed curves in vehicular equipment; automatically selecting corresponding inter-station operation grades and the corresponding recommended speed curves by the aid of the ATO systems according to actual early departure time conditions of the trains, controlling train operation by the aid of the curves, determining train tracking recommended curve control strategies, transmitting control instructions to the trains according to train operation real-time information and operating train tracking recommended speed curves. The method has the advantages that the train operation grades, the corresponding recommended speed curves and the train tracking recommended curve control strategies can be automatically selected to transmit control commands to vehicles according to real-time conditions, real-time information feedback of the vehicles can be received, and accordingly the target control requirements can be met on the premise that the train operation punctuality is guaranteed.

The invention discloses a public transportation vehicle station-skipping scheduling method and system. With the public transportation vehicle station-skipping scheduling method adopted, station-skipping driving can be possibly realized in the operating process of public transportation vehicles since no passengers get off the vehicles or no passengers get on the vehicles in stations, or in order to ensure the punctuality of public transportation. According to the public transportation vehicle station-skipping scheduling method, based on passenger get-off information obtained in the vehicles and passenger get-on need information in the stations, and the number of waiting passengers and the number of passengers who get off the vehicles in each period, in each station and on each line as well as difference values of actual time and scheduled time of the operating of the vehicles between any two adjacent stations in each period are predicted according to a large amount of historical route operating data, and whether station-skipping scheduling is carried out or not can be judged according to defined passenger punctuality deviation values. With the public transportation vehicle station-skipping scheduling method and system of the invention adopted, the service level of urban public transportation and the punctuality rate of the public transportation can be improved, and the competitiveness of the public transportation can be improved.

The invention discloses an on-time and energy-saving train automatic adjusting method and an on-time and energy-saving train automatic adjusting system. The method comprises the following steps of judging whether the number of on-line trains in a current railway section exceeds a threshold value or not; if the number exceeds the threshold value, performing calculation according to an on-time adjusting strategy so as to obtain a train stop time and a region running level; if the number does not exceed the threshold value, performing the calculation according to an energy-saving adjusting strategy so as to obtain the train stop time and the region running level. By using the method and system disclosed by the invention, the punctuality and energy-saving ability of running of the train are ensured, and the working amount of dispatchers is reduced.

The invention relates to a high-precision timing system and method with a navigation satellite adopted. The method includes the steps that firstly, whether the timing system is successfully positioned or not is confirmed; secondly, whether a PPS signal provided by a satellite signal receiving module is continuously effective or not is judged; thirdly, timing is carried out through the satellite PPS signal; fourthly, punctuality is carried out through a local clock signal. According to the high-precision timing system and method with the navigation satellite adopted, a constant-temperature crystal oscillator is disciplined through the PPS signal provided by the navigation satellite, and control parameter changes are recorded in the disciplining process; under the punctuality state, the frequency of the local clock signal is compensated for and adjusted according to changing conditions of the control parameters under the timing state. After the timing system loses a navigation satellite reference signal, synchronization between the timing system and the satellite can still be kept according to a PPS reference signal obtained through local clock signal frequency demultiplication, the punctuality ability of the system is greatly improved, and long-time punctuality work can be more precisely completed.

The invention discloses a green wave setting method for realizing streetcar interstation green-wave passage. The method comprises the following steps: collecting data of intersections along the line of streetcars and streetcar running data; determining an intersection timing plan according to the data of the intersections along the line of the streetcars and traffic flow of each intersection; setting up direction and car departing time, and determining time when the streetcars in up direction reach each intersection; determining streetcar pass phase position green light midpoint time and the car departing time of the streetcars in down direction; determining time of the streetcars in down direction reaching each intersection; and calculating the difference between the time of the streetcars in down direction reaching each intersection and the green light midpoint time, and determining time difference [delta]x of each intersection; and according to the time difference, adjusting the timing scheme of the intersection. The method prevents unnecessary parking of the streetcars at the intersections, thereby improving running efficiency of the lines; and with electric car running induction technology being combined, the streetcars are allowed to run according to set parameters, and punctuality rate of the streetcar is improved.

The invention discloses a train operation optimal control simulation method and system for an urban railway system. The method comprises the following steps: detecting the speed and location of a train at the current time step; determining the distance between the train and a tracking target; calculating the optimal target speed of the train according to a speed optimization algorithm; and calculating and updating the acceleration of the train as well as the speed and location of the train at the next time step. The system comprises a vehicle-mounted device, and the vehicle-mounted device is provided with a subsystem used for calculating the optimal target speed of the train according to the speed optimization algorithm. The method and the system provided by the invention are used for optimizing the running speed curve of the train and realizing low consumption and punctuality of train operation.

The invention relates to the technical field of UAV (unmanned aerial vehicle) application, and especially relates to a cargo delivery system and method based on a UAV (unmanned aerial vehicle). The system comprises an order generation module which is used for generating an order according to the ordering demand of a user, wherein the order at least comprises the commodity information and address information of the user; cargo receiving stations which are configured to be used for receiving to-be-delivered cargos carried by the UAVs and the UAVs; a flight path configuration module which is usedfor selecting the address of the cargo receiving station nearest to the address of the user according to the order information, and regenerating delivery path information of the UAVs; the UAVs whichare used for bearing the to-be-delivered cargos, and fly according to a control instruction; a UAV flight control module which is used for transmitting the control instruction for controlling the flight of the UAV according to the cargo delivery path information. According to the invention, the system and method can enable the delivery efficiency of cargos to be higher, can enable the delivery cost to be lower, and can guarantee the delivery punctuality.

The invention discloses a method of querying real-time bus arrival information, and belongs to the field of intelligent traffic. The method includes utilizing the next station information, station delay and station travelling time information of each bus, and acquiring arrival information of N arriving buses of each line and station in real time and updating and storing; monitoring and receiving query commands, querying the arrival information of the N arriving buses from the cache according to the query commands, and returning the querying result. Defects that current bus querying service only supplies static information are focused, by the aid of dynamic data generated by an existing prediction system, the method, based on internet, of real-time bus arrival information querying service is provided so as to solve the problem that passengers wait for a long time (including waiting in transfer processes) on stations due to low bus punctuality rate, travelling efficiency is improved, and travelling experience is also improved.

The invention relates to a method of optimizing the running track of a city bus considering energy conservation. The method comprises the following steps: 1) the running interval between the current bus running position and a stop site specified by a running plan is divided to multiple continuous sub intervals according to road features, wherein the road features comprise slope sections, speed-limit sections and intersection sections, and attribute values corresponding to the road features are assigned to each sub interval; 2) according to the divided sub intervals, a city bus driving policy bilayer optimization calculation model considering energy conservation is built; and 3) the city bus driving policy bilayer optimization calculation model is solved, and the optimized track for the running interval between the current bus running position and the stop site specified by the running plan is finally acquired, wherein the optimized track comprises the driving speed, the driving time, the position, the traction force and the braking force of the bus in each sub interval. Compared with the prior art, the method of the invention has the advantages of being dynamic and continuous, reducing energy consumption, improving the punctuality rate and the comfort and the like.

The invention discloses high-precision modular time synchronization equipment. The equipment is based on the IRIG-B communication protocol and the PTP communication protocol, and comprises a self-frequency source, time source processing modules, a signal input interface, a signal output interface, and plug-in boards. The equipment provided by the invention has the advantages that the equipment canbe configured through a Web interface, and configuration options comprise external source input setting, local clock source output setting, system setting, relevant PTP and NTP port setting, etc.; mutual redundancy among a satellite signal time source, a B code time source, a 1PPS+TOD time source and the self-punctuality frequency source can be achieved; and two-clock redundancy can be achieved,signal synchronization is carried out between a redundancy main clock and an external GPS / BD satellite or external same-source B codes in a real-time manner, redundancy time signals are input for themain clock through 1PPS+TOD, and synchronization with 1PPS+TOD signals output by the redundancy main clock is carried out through switching when the main clock finds that both input GPS / BD signals andinput B codes are abnormal.

Disclosed is a bus driving speed control method for improving a bus punctuality rate. The method comprises: by taking signal lamp timing along a bus route, a vehicle average driving speed and a maximum speed allowed by a road section as constraint conditions and the bus punctuality rate as an optimization target, establishing a mathematic model; acquiring road space information of each road section, i.e., variable information related to by the model established in step one; substituting the acquired information into the established model for solving an optimum scheme, i.e., solving an optimum driving speed of a bus at a road section with good traffic conditions, wherein the road section with the good traffic conditions satisfies Vi<->>Vmi, Vi<-> is a vehicle average speed of an i-th road section, Vmi is a critical speed of the i-th road section, i.e., the speed when traffic flow reaches the maximum, and a bus driver takes this speed as a timely-adjusted driving speed; setting information updating frequency f to be information updating frequency in unit time, and updating the acquired information and a model calculation result for every updating period T (T=1 / f) until the bus arrives at a next station; and after the bus stops at a station and before the bus starts to advance, restarting a data updating process, and at the same time, the driver adjusting his driving speed along with scheme change.

The invention discloses a bus rapid transit-oriented priority signal control system and a method thereof. The system comprises a central management platform used for remote management and maintenance of the whole system and the real-time monitoring of the bus rapid transit operation; a priority signal controller which is used for receiving arrival information of a bus in the bus rapid transit, outputting a priority signal which is analyzed and processed by corresponding priority algorithms to a signal, and outputting the processed related information to the central management platform; a vehicle identification device which is used for acquiring the arrival information and vehicle ID information of the bus in the bus rapid transit, and outputting the information to the priority signal controller; and the signal which is used for responding to a request of the priority signal according to the currently operating phase to cause the bus in the rapid transit to rapidly pass through a road junction. The system and the method have the beneficial effects of strong management, control and statistical capability, can improve the efficiency of processing the bus priority signal, and ensure punctuality of the bus rapid transit.

The invention discloses a multi-request conditional active type tramcar signal precedence system and method. According to the system and method, multi-detection and multi-request technology is adopted, namely, pre detection, startup detection, stop line detection and empting detection are adopted; each time a signal machine receives a precedence request, and the signal machine performs response of different degrees and different actions according to the operation condition of a current phase and a current traffic condition; request information emitted out each time all contains priority information; and priorities are formulated according to the punctuality and passenger capacity of current tramcars, and the priorities can be divided into several levels. The multi-request conditional active type tramcar signal precedence system and method of the invention have the advantages of high response speed, good flexibility, no missed detection and high reliability, and can greatly improve traffic signal precedence effects. According to the system and method of the invention, the demands of social transportation are considered, and the impact of signal precedence on the social transportation can be effectively reduced.

The invention discloses a method for synchronizing time. Single exponential smoothing filtering is respectively carried out on the measured value of a phase position and the measured value of frequency, only last calculation results and the single measured values of this time are used in the calculation process every time, the calculated amount is greatly reduced, and through continuous iterative operations, an algorithm can be stably converged to be close to a statistical expected value. Through the algorithm of the method, low hardware cost can be used, random time errors output by a global positioning system can be compensated in a high-precision mode, the frequency of a high and stable crystal oscillator is measured precisely, and supports are provided for designing a high-precision clock and improving the punctuality accuracy of the clock.

The invention provides a railway locomotive running dynamic simulation test device and a simulation method of the railway locomotive running dynamic simulation test device. The railway locomotive running dynamic simulation test device comprises an operation and display interface module, a locomotive model base module, an environment simulation module, a locomotive running energy consumption optimization module, a locomotive running control simulation module and a locomotive running simulation module. According to the technical scheme, the railway locomotive running dynamic simulation test device and the simulation method of the railway locomotive running dynamic simulation test device have the advantages of being capable of effectively testing the effectiveness and reasonability of a proposed locomotive running energy consumption optimization scheme and testing running safety and punctuality of a locomotive.

The invention discloses a multicomputer system time synchronization method based on VPX framework and device. The device comprises an electrical level conversion circuit for converting electrical level from input B code fulfills RS485 / 422 to TTL signal; a FPGA circuit for solving input B code to year-month-day-hour-minute-second message and recovering pulse per second message; analysis and punctuality of B code message is achieved; a time service register block for clock count through receiving temperature-compensation crystal oscillator and reset handle from the pulse per second message , the time information of resolution ratio over one microsecond is achieved; a PCIE exchanger for decoding the time information from a FPGA circuit provided by a blade sever; the PCIE exchanger is connected with the FPGA circuit through a PCIE port provided by the FPGA circuit; a processor for disposing PCIE exchange message, the processor is connected with the PCIE exchanger. According to the method and the device, the time precison can be reached within 10 us, the matter of unification of time of blades on the blade sever can be solved effectively, economic benefit is obvious.

The invention relates to the intelligent public transport technology field, and especially relates to a GPS positioning data compensation method. The method comprises standard line path generating steps and GPS positioning data compensation steps, wherein the standard line path generating steps can convert the driving track into a curve model and form a standard line path by using a linear interpolation fitting algorithm; and the GPS positioning data compensation steps can realize continuous compensation for discontinuous GPS positioning data generated by an operating vehicle through classification of off-line types and by using the standard line path to simulate driving of a bus. The method provided by the invention is applied to solve the problem about the discontinuous GPS positioning data generated by an on-line operating bus, and enables the intelligent public transport dispatching system to have more reasonable departure rate and punctuality rate, and enables a daily operation form to be more accurate through compensation of the GPS position data. Besides, the method also reduces the workload for additional recording of the daily operation data in the later period for a dispatching staff.

The invention discloses a locomotive ticket-buying and seat all-intelligent recognition system which comprises a seat arranged in a locomotive. The seat comprises a base fixed on a locomotive base plate, the base is connected with a cushion through a rotating shaft arranged on the base. The rear of the cushion is provided with a backrest, the lower end of the backrest is connected with the base through a backrest rotating shaft, a torsion spring is arranged between the cushion and the rotating shaft, a clamping pin connected with a driving mechanism is arranged in the base, and the bottom of the cushion is provided with a clamping hole matched with the clamping pin. A display screen, a loudspeaker, an induction zone and a prompt lamp which are connected with a control system are arranged at the top end of the backrest. The control system is connected with the driving mechanism through a driving circuit, the control system is connected with a locomotive data processing system through a locomotive network system, and the locomotive data processing system is connected with an internet ticket-buying system through a wireless network. The passenger in-place speed is improved, true and false ticket-buying passengers are identified, the passenger management cost is reduced, the management efficiency is improved, the locomotive departing and arrival punctuality is improved, and the service quality is improved.

The utility model relates to a customized bus route optimization method for reliability shortest path, which comprises the following steps of establishing a road network, comprising establishing a spatio-temporal network and a reliability network; determining the passenger relaxation time window; determining the scope of service; calculating whether a passenger can be serviced by the opened vehicle k; finding the shortest path of reliability; opening the customized new bus routes. The invention discloses a custommized bus line optimization method for reliability shortest path, which can efficiently and quickly deliver passengers to a destination under the condition of satisfying passenger travel. Due to the delays caused by traffic congestion during the morning and evening rush hours of customized buses, the invention creatively proposes a method for searching the shortest path of reliability, which avoids the delay caused by driving, improves the stability and reliability of vehicle operation, meets the requirement of high punctuality of customized bus service by commuters during morning and evening rush hours, and finally improves the share rate of customized bus service.

The invention discloses an off-peak multi-train operation energy conservation optimization method. The method includes setting basic parameters of route data, train data, operation data and a genetic algorithm of multi-train operation in off-peak hours; constructing a multi-train operation energy consumption calculation model of the off-peak hours; taking a compressed value of station dwell time as an optimization variable, taking an energy conservation index and a punctuality index as an optimization target and taking one-way total operation time and station dwell time variation range as constraint conditions, establishing an off-peak multi-train optimization model; utilizing a Pareto multi-target genetic algorithm for solving the optimization model and obtaining a Pareto non-dominated solution set; finally, through extracting the globally optimal solution, solving the section operation time and each station dwell time after the optimization and thus obtaining an optimized time table and implementing the model solving of the non-peak multi-train energy conservation optimization model. According to the invention, energy conservation of non-peak multi-train operation is reduced and train operation time accuracy is improved.

The invention discloses an improved brute-force search method based train vehicle energy-saving operation method. The method includes steps of setting train operation line data and train parameters and establishing a train operation power consumption calculation model; taking train traction energy consumption and interval travel time as optimization targets, establishing a train operation energy-saving optimization model; processing an objective function and constraint conditions through a goal constraint method and converting a multi-target problem to a single-target problem; processing the constraint conditions, narrowing a solution search range and processing the converted single-target problem through a brute-force search method; selecting a train operation strategy with punctuality and the highest energy conversation rate according to the set train interval travel time and the interval distance, and obtaining a corresponding speed curve and energy consumption curve. According to the invention, regular energy conservation optimization precision of a train is improved effectively. Besides, the optimization speed is high and train energy consumption is reduced.

The invention discloses a method for optimize operation and control of a fuel cell hybrid electric train. The method includes the steps of: inputting train information and line information for off-line analysis; based on the online energy management method, comparing the equivalent hydrogen consumption and the regenerative braking energy recovery rate index without obtaining the speed limit constraint and time constraint, obtaining the speed-position curve; increase the line interval speed limit constraint, improve the speed- position curve; increase the running time constraint, improve the offset of the idle line point and the braking point by the advance idle line and multi-objective optimization method to obtain the final speed position Curve; the driver controls the train operation through the final speed-position curve.The invention can effectively improve the energy utilization rate in the whole train operation process, and utilizes regenerative braking energy to the maximum extent on the basis of punctuality and comfort. It greatly reduces the driverworkload and improves the comfort of passengers.

The invention relates to a universal time synchronization system and an implementation method. The universal time synchronization system includes a receiving part, a clock part and an output part; a GPS / BD receiver unit, a 2Mbit receiving unit and an optical fiber IRIG-B(DC) receiving unit of the receiving part, a network unit, a display unit and a power supply unit of the clock part, as well as a PPS (TTL) output unit, a PPS (idle contact) output unit, an NTP output unit, a PTP output unit, an optical fiber IRIG-B (DC) output unit, an RS232 output unit, an RS422 output unit and an alarm output unit of the output part are respectively connected with a main control unit of the clock part; and the main control part performs processing such as data rationality judgment, punctuality and data protocol conversion on GPS / BD, B code and 2M signals which are received by the receiving part in an ARM, an FPGA and a punctuality module. According to the universal time synchronization system and implementation method of the invention adopted, high-precision and fully-functional time service equipment can receive four kinds of time service source signals, namely, Beidou, GPS, optical fiber B code and 2M signals, and therefore, an original mode that time service and positioning can be realized only relying on wireless satellite signals can be realized, and a defect of excessive reliance on a wireless positioning system can be avoided.