911results about How to "Improve traffic capacity" patented technology

An area mixed traffic self-adapting signal coordinated control method relates to the technical field of the automatic control, wherein the vehicle information for entering the control junction is detected through a detector, and the vehicle information is transmitted to the traffic signal controller; the traffic signal controller performs the preheating on the traffic flow data, while the area coordinated control computer analyzes the traffic flow operation state of each inlet section of the junction, to perform the realtime analysis forecast, provides the optimized traffic signal project timing parameters to the traffic signal controller. The method of the invention divided the city road net into a plurality of subareas, adopts the layer net working to coordinated control the duration time of the traffic light at each junction, advances the traffic capacity, prevents the traffic congestion, reduces the off gas, ensures the traffic safety.

The invention discloses an intelligent coordination control method of a dynamic bi-directional green wave band for an urban traffic trunk road. The method comprises the steps of starting, processing coordination parameters, processing intersection parameters, processing time and processing cycle, etc. The method adopts a double-stage control structure, namely, a control layer of a traffic control center server and a control layer of an intersection intelligent signal controlling machine, through the information interaction and the coordination of the traffic control center server and the intersection intelligent signal controlling machine, phase sequence is optimized in an on-line manner; and common period, highway section upper phase difference, highway section down phase difference, the starting time of an upper coordination phase, the starting time of a down coordination phase, green ratio at each intersection and other key control parameters are optimized and calculated on a real-time basis. The intelligent coordination control method gets rid of the limit of equal intersection intervals required for the coordination control of the green wave band for the urban traffic trunk road, and realizes the unceasing travel of bi-directional traffic flows on the main road by applying the traffic engineering technique, the artificial intelligence technique and the automatic control technique, thereby reducing the parking rate while the traffic capacity of the trunk road is improved, and obviously reducing the traveling time.

A method and integrated hardware system for dynamic bandwidth allocation in EPONs which—in sharp contrast to the prior art—provides superior upstream transmission characteristics including QoS considerations consistent with any Service Level Agreement that exists between a customer and a service provider. Advantageously, our inventive method and system for dynamic bandwidth allocation provides fair and efficient upstream bandwidth management in addition to enhanced traffic performance for customer traffic within the EPON. For a service provider, our invention permits the deployment of intelligent traffic management and QoS characteristics capable of supporting existing or novel voice, video, and data services over the EPON.

A multilane free-flow electronic toll collection method based on accurate position match is characterized in that electronic tag positioning and vehicle position detected results are matched to achieve multilane free-flow electronic toll collection. The method comprises the following steps: 1, obtaining vehicle-mounted electronic tag positions, vehicle positions and vehicle images to perform electronic on-stream toll collection; 2, accurately matching the vehicle-mounted electronic tag positions and the vehicle positions to distinguish legal vehicles and illegal vehicles; and 3, performing background data processing, storing images, license numbers and illegal passing records of the illegal vehicles to be used as the basis of toll collection. By accurately matching the vehicle detected results and electronic tag positioning results, the judgment of the legal vehicles and the illegal vehicles is achieved, and accordingly the multilane free-flow electronic toll collection is achieved.

A transmitter for transmitting data packets including a Media Access Control (MAC) address extractor configured to extract one or more MAC addresses from packet headers included in data packets, a MAC compression unit configured to provide compressed MAC data including one or more pointers associated with each of the one or more extracted MAC addresses respectively, a packet modifier configured to modify the data packets by adding the compressed MAC data to the data packets, and a transmission unit configured to transmit the modified data packets. A receiver for receiving data packets including compressed MAC data, the compressed MAC data including pointers associated with MAC addresses, including a receiving unit configured to receive data packets, a compressed MAC data extractor configured to find and extract compressed MAC data from received data packets, and a packet modifier configured to modify the received data packets by removing the compressed MAC data from the received data packet. Related apparatus and methods are also described.

The invention discloses a signal timing optimization method based on a variable guide lane. After the functional attribute of the variable guide lane is changed, each veering traffic flow saturability is obtained by each veering traffic volume obtained by a detector, and different signal timing optimization schemes are determined according to the saturability. The method particularly comprises the steps that when the saturability is lower, smallest delay is taken as a control target, and a period and signal timing are determined by adopting a traditional Webster method; when the saturability is larger than 0.9, the intersection traffic capacity improvement and the delay reduction are taken as targets, and when some veer is over-saturated, the period and the green signal ratio are adjusted by a hill-climbing method; when each veer is saturated, a phase position is added on basis of common four phase positions, a phase position group is redistributed, a key phase position chain of each combined phase position group is found, and green signal lamp time is distributed according to an equisaturation principle; the aims of reducing total delay at an intersection and improving the traffic capacity are achieved.

The invention discloses a reversible-lane-based intersection signal control method. The method comprises the following steps of, firstly, at eligible intersections, mounting detectors, and laying annunciators, main signal lights, pre-signal lights, reversible lane dynamic signs, wherein the annunciators are provided with computer programs, and the main signal lights, the pre-signal lights and the reversible lane dynamic signs are associated with reversible lanes; secondly, according to historical data, determining approaches where the reversible lanes can be arranged, and starting reversible lane control schemes; thirdly, according to the left turn and straight traffic flow of the approaches and the relation between the number of lanes and the saturation flow, judging the operating directions of the reversible lanes; lastly, according to the directions of the reversible lanes, determining appropriate signal matching schemes. The reversible-lane-based intersection signal control method can improve the traffic capacity of the intersections, reduce delay at the intersections and guarantee vehicle driving safety of the intersections.

The invention relates to a communication mode arrangement related to a road signal crossing management and control and control method thereof. The invention further discloses a conflict-free communication mode arrangement for road plane crossing. On the road plane crossing, dividing the road into four crossings of an N direction crossing, an S direction crossing, a W direction crossing and an E direction crossing according to relative orientation of the plan crossing. For S direction crossing, the S direction crossing further comprises a first left-turn queuing lane and a second left-turn queuing lane. The beneficial effects of the invention lie in: based on present signal crossing communication organization, conflict of left-turn vehicle and straightly driving vehicle, that of left-turn non-power-driven vehicle and power-driven vehicle and that of right-turn vehicle and left-turn vehicle, non-power-driven vehicle and pedestrian are solved in a more prefect way.

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 invention relates to a sightseeing rail car. The rail is an H-shaped steel rail, each other carriage is only provided with a rear driving axle and a rear driving wheel except the first carriage, the front and rear carriages are lapped and connected by a universal bearing connector, the front steering axle and the rear driving axle are connected with the carriage in a pivoting support mode, a driving motor is arranged at the bottom of every one to three carriages, and a safety pressure rod is arranged on each row of seat. The sightseeing rail car has the characteristics of reasonable structure, running stability, high passenger capacity, low noise, long continuous running time and the like, and is suitable for complex sites with many bends, small radii and slopes in indoor and outdoor sightseeing amusement.

The invention discloses a coordination control method for a crossroad left-turning pre-signal and a straight-going successive signal, which comprises the steps that: a main signal lamp is arranged at first in the middle of a crossroad, left-turning pre-signal lamps are respectively arranged at first stop lines of four left-turning entrance lanes for left turning vehicles, straight-going successive signal lamps are respectively arranged in front of second stop lines of four exit lanes for straight-going vehicles; a main signal phase, a phase difference between the left-turning pre-signals and the straight-going successive signals, and a phase difference between the straight-going successive signals and the main signal are then configured, time allocation is prepared, the sum of key flow ratios of the phases is calculated, and the time for green light is finally allocated; according to the method disclosed by the invention, the contradiction in the aspect of time between the left-turning vehicles and the straight-going vehicles is thoroughly settled by means of the coordination control for the main signal, the pre-signals and the successive signals, thereby guaranteeing drive safety; the entire cycle for the coordination control only needs to be calculated once, which is fast and convenient, and the method effectively avoids that the adoption of traditional time allocation method is likely to lead to the jam of left-turning vehicles.

The invention provides an intelligent traffic signal control system considering the safety of cross-street pedestrians; the intelligent traffic signal control system comprises inductance coil detectors, video detectors, a traffic signal controlling machine and signal lamps; a two-phase total-inductive control mode is adopted in a road crossing; the two inductance coil detectors are embedded in each inlet lane, wherein the main inductance coil detector is embedded at a stop line of the inlet lane and is used for detecting traffic flow of a road section; the auxiliary inductance coil detector is embedded at the possible maximum queuing part of an advanced position of the main inductance coil detector and is used for assisting the main inductance coil detector to detect motor vehicles; pedestrian cross-street waiting areas at two ends of each pedestrian crossing are respectively provided with the video detector for detecting flow of crossing pedestrians; the traffic signal controlling machine carries out data exchange with the main inductance coil detector, the auxiliary inductance coil detector and the video detectors by data lines and simultaneously controls the signal lamps positioned at the pedestrian crossing and the road crossing by the data lines. According to the intelligent traffic signal control system, the safety and the passing efficiency of the cross-street pedestrians can be realized, and the passing rate of the motor vehicles is ensured.

The invention discloses a bend driving early warning method based on vehicular access synergy. Firstly, visibility information at the position of an inlet of a bend is detected, and load information, speed information, license plate number information and model information of vehicles passing through the position which is 100m away from the inlet of the bend are detected. According to the vehicle model information, the vehicle load information, bend radius information and bend transverse slope angle information, a bend passing vehicle speed upper limit value corresponding to each vehicle is obtained, a corrected bend passing vehicle speed optimum speed limit value of each vehicle is finally obtained by the combination between the bend passing vehicle speed upper limit value of each before correction and the visibility information, and the bend passing vehicle speed optimum speed limit value and a corresponding license plate number are jointly sent to a variable speed limiting notice board to be displayed. The bend driving early warning method based on the vehicular access synergy has the advantages of being high in operating rate and reliability, providing the reliable information for a bend driving speed limit sign, effectively assisting a driver in avoiding possible side-turning accidents, ensuring driving safety, being universally applicable to the bend driving environment, overcoming the defect of the high cost of a vehicle-mounted early warning mode in traditional methods, and being high in implementation performance.

An autonomous personal transportation system for moving passengers and light freights is constructed with a track network and small vehicles on the track network. There are a number of stations and stops for loading and unloading on side tracks off the mainline of the track network. The vehicle width is limited to a dimension for one seat. The vehicles can be coupled statically or dynamically to form a train. The track has side rails for the rigid wheels of the vehicle and a central rail for centering the vehicle on the guideway and providing additional acceleration and braking capability. The control system for the movement of vehicles is divided into three levels: the central control system, the wayside control system and the vehicle control system.

The invention relates to a control method for an electronic charging system without a stop of a vehicle. The control method comprises the following steps: step 1: a driveway controller communicates with a vehicle-mounted electronic tag responder to complete a withdrawing transaction, and the driveway controller stores vehicle data and the transaction record to a vehicle information storage unit; step 2: when a vehicle travels through an earth induction coil of an entrance, the driveway controller adds the vehicle data and the transaction record in the vehicle information storage unit to a vehicle queue storage unit, and sets up the status of an external executive equipment according to the data of the vehicle queue storage unit; step 3: when the vehicle approaches an earth induction coil of an exit, the driveway controller reads the data of the vehicle queue storage unit and sets up the status of transportation lights and the content of an information displaying screen according to the data; step 4: when the vehicle leaves the earth induction coil of the exit, the driveway controller writes in the passing record of the vehicle to a hard disk for storage, and sets up the status of the external executive equipment according to the data of the vehicle queue storage unit. The method of the invention has the advantages of good universality, is beneficial to nationwide networking management and enhances the using efficiency of highways.

A dynamic road marking system for influencing a flow of traffic has a plurality of road marking units (3, 3′, 3″, . . . ) provided with a light source emitting light in the direction of a driver of a vehicle (6, 6′) traveling over a roadway (10). The road marking unit includes detection apparatus (2) for detecting the intensity of the flow of traffic, and conversion apparatus for converting the detected traffic intensity to a desired traffic intensity with a desired mutual distance between the vehicles (6, 6′) and / or a desired velocity of the vehicles (6, 6′). The road marking system generates a guidance light (1, 1′, . . . ) which seemingly moves along with the flow of traffic by suitably switching on and off the light source in the road marking units (3, 3′, 3″, . . . ). The flow of traffic moves along with the moving guidance light (1, 1′, . . . ). The speed of the guidance light (1, 1′, . . . ) is adapted to the desired mutual distance between the vehicles (6, 6′) and / or to the desired velocity of the vehicles (6, 6′). Preferably, guidance lights (1, 1′, . . . ) are disposed between each of the vehicles. The dynamic road marking system enables higher traffic intensities on roadways and improved traffic safety. In addition, the road marking system including guidance lights (1, 1′, . . . ) facilitates interweaving of vehicles.

The invention belongs to the intelligent traffic control technical field and relates to an urban expressway multi-ramp coordinated control system and a control method. The control system involves equipment layout, control and induction strategies and software analysis; and a local and coordination combined method is adopted to generate a regulation rate according to a traffic capacity condition atthe dynamic traffic bottleneck of a main line and a traffic flow conservation principle. With the multi-ramp coordinated control schemes of the invention adopted, the traffic demand of all entrance ramps can be balanced, the proportion of short-distance travel of the main line can be decreased, and the traffic efficiency of an expressway network can be increased.

The invention discloses an intersection signal control and speed guidance system in a cooperative vehicle infrastructure environment. The system comprises on-board units, a road side unit and a signallight control module, wherein an on-board information transmission module in each on-board unit acquires vehicle information and transmits the vehicle information to the signal light control module,and the information fed back by the signal light control module is sent to an information acquisition module; a road side information acquisition module in the road side unit acquires road side information and stores the road side information into an intersection basic information storage module, the intersection basic information storage module pre-stores intersection information and historical data, and a wireless communication module wirelessly transmits the road side information, the intersection information and the historical data to the signal light control module; and in the signal light control module, optimal timing scheme information and travel advice information are obtained through calculation by use of a program model in the signal light control module based on the vehicle information, the road side information, the intersection information and the historical data, and the travel advice information is fed back to the on-board units.

The invention relates to an urban expressway on-ramp and main line collaborative signal control system and method. The system comprises an on-ramp upstream detector, an on-ramp downstream detector, a main line upstream detector, a main line downstream detector, an on-ramp, a main line signal lamp and a processing control center. The processing control center judges whether a main line is blocked or not according to the detection speeds and the time occupation rates of the main line upstream detector and the main line downstream detector, and starts on-ramp and main line collaborative signal control if the main line is blocked. The processing control center confirms a timing plan for control according to flows detected by a ramp detector and the main line and ramp demands. After a period is finished, the processing control center judges whether the main line blockage is finished or not according to the detection speed and the time occupation rate of the main line upstream detector, continues to perform signal control if the blockage occurs and stops signal control if the blockage does not occur. The system releases main line and ramp vehicles in turn in an expressway blockage period through the collaborative signal, changes two orderless conflict flows into an order saturate flow, improves the bottleneck point passing capacity of the main line and greatly improves the convergence safety.

The invention discloses a traffic control system through wireless communicating network in the intelligent traffic control technical domain, which comprises the following parts: control center, traffic tube controller, flow monitor, traffic information display card, route joint, wherein each part is switched with ZigBee wireless communicating mode to form control network based on ZigBee wireless communication to realize real-time communication among each joint mutually, which connects the control center to realize uniform coordinate control of traffic.

The invention relates to an intersection traffic comprehensive control system, wherein a statistical module is used to generate vehicle flow data of each traffic lane and each direction, a traffic light intelligent control module is used to generate vehicle stopping and queuing data of corresponding traffic lanes and directions, a vehicle speed detecting module is used to generate vehicle speed data, a snapshot control module is used to generate a snapshot control signal, a traffic light control module is used to receive each traffic light control instruction of a central processing module and to connect or disconnect a corresponding traffic light power supply circuit, the central processing module is used to receive information and data which is sent by other modules and devices and to control other modules and devices. The intersection traffic comprehensive control system has various control functions of monitoring the traffic conditions, controlling the traffic lights and shooting violation vehicles and the like, the functions of the system and the various devices which are controlled by the system are effectively exerted, the system structure is simplified, the investment is saved, and the system building and using are convenient.

The invention discloses a multi-functional toll collection lane controlling and managing system of toll roads. An industrial personal computer, a car controlled machine, an IC (integrated circuit) card reader, a toll special keyboard and a display screen at an entrance lane direction are arranged in a toll booth; an entrance lane IC card automatic card sender and an entrance lane full-automatic toll data wireless emitter / receiver are arranged at the right side of the toll booth; the industrial personal computer, the car controlled machine, the IC card reader, the toll special keyboard and the display screen at an exit lane direction are arranged in the toll booth; and an exit lane full-automatic toll data wireless emitter / receiver is arranged at the left side of the toll booth. The system of the invention can organically combine three functions of manual toll lane, ETC (electronic toll collection) lane and automatic card sending and reading lane, so that various of vehicles can pass through the entrance and exit lanes of the toll station in a short time; and the system can disperse the vehicles on the square to a maximum extent without building new lanes. The system is safe and quick. In addition, the system can accelerate vehicle traffic capacity and reduce labor intensity of the toll staff.

The invention provides an automobile-road cooperation-based intelligent networked automobile formation control method and device. According to the method and device, the technical superiorities of automobile-road cooperation are utilized, multi-source traffic information is acquired and analyzed in real time, a formation control algorithm calculates an optimal automobile speed, and therefore, automobiles can run at the optimal automobile speed according to instructions under a formation state. With the automobile-road cooperation-based intelligent networked automobile formation control method and device adopted, the parking and queuing phenomena of automobiles at the intersections can be avoided, road operation efficiency can be improved, and road passage capacity can be improved.

The invention provides a mechanical system of a high-definition pipeline magnetic flux leakage detector for the on-line detection of the metal loss degree of a pipeline, which relates to the technology fields of the measurement of magnetic variables and the size of linear thickness, and the pipeline system. A carrier of the mechanical system is divided into two sections; the two sections are connected through a universal joint (12); the shell body of a first section is a circular pipe-shaped magnet (5), wherein an anti-collision head (1) is arranged at the front end of the circular pipe-shaped magnet, and the universal joint (12) is arranged at the tail part thereof; a front supporting mechanism (2), a front driving leather cup (3), a front steel brush (4), a main probe system (7), a rear steel brush (9), a rear driving leather cup (10), a rear steel brush (9) and a rear supporting mechanism (11) are arranged at the periphery of the shell body in sequence from front to back; the shell body of a second section, in which an electronic storehouse (14) is arranged, is a circular pipe-shaped storehouse, wherein the universal joint (12) arranged at the front end of the circular pipe-shaped storehouse, and the tail part thereof is sealed; a probe system (13) with an inner diameter and an outer diameter, a tail supporting mechanism (15) and an odometer wheel system (16) are arranged at the periphery of the shell body in sequence from front to back. The mechanical system has the advantage that the dynamic performance and the precision of the detector are improved.

The invention provides a crossroad traffic control method capable of enhancing the vehicle traffic capacity, and belongs to the technical field of urban traffic control. In order to solve the problem of low vehicle traffic capacity of the conventional traffic intersection control method, the crossroad traffic control method capable of enhancing the vehicle traffic capacity adopts a technical scheme that: a waiting area is added at each intersection of the crossroad, and the waiting areas are positioned at the positions of a left turn lane and a forward lane, wherein each waiting area corresponds a group of waiting area signal lamps; the waiting area signal lamps respectively instruct left turn vehicles or forward vehicles to enter the waiting areas; the motor vehicles entering the waiting areas are the left turn vehicles or forward vehicles; and the motor vehicles orderly enter the waiting areas according to the waiting area signal lamps and run according to the instructions of the corresponding centre signal lamps. The crossroad traffic control method is applicable for traffic management and control of flat crossroads of middle and large cities.

The invention discloses a supersaturated intersection signal lamp control method and device. According to the technical scheme, the supersaturated intersection signal lamp control method mainly includes the steps of obtaining detection data of controlled intersections and determining whether the controlled intersections are in the supersaturated state or not according to the detection data; if the controlled intersections are in the supersaturated state, determining first queuing lengths of the controlled intersections according to the detection data; determining timing parameters of controlled intersection signal lamps according to first queuing lengths, second queuing lengths, second flows, the expected traffic capacity and constraint conditions of phases of the controlled intersections, wherein second queuing length values of the phases are expectation values, not exceeding the corresponding phases of the controlled intersections, of queuing length threshold values, and the second flows of the phases are expected arrival vehicle numbers of the corresponding phases of the controlled intersections. By means of the technical scheme, signal control over the supersaturated intersections is achieved, and the traffic capacity of the supersaturated intersections is improved.

An internet of things based personal self-help parking charge management system comprises a mobile terminal, a server, an internet of things parking lock, a server management terminal, system maintenance staff, and park management staff, which interact with one another; the mobile terminal is used for installing APP (application) software and remotely controlling the internet of things parking lock and is connected to a third-party payment platform to allow mobile payment; the server is used for running the APP software in the system; the internet of things parking lock comprises a parking lock; a control circuit connectable to the internet is built in the internet of things parking lock and is connected with a mobile broadband network and used for receiving a control signal from the mobile terminal so as to lock or unlock a parking lot and sending idleness / occupation information of the parking lot to the server; the system maintenance staff is used for maintaining, correcting and managing the information and data stored in the server and a park management terminal; the park management staff is used for managing and monitoring a park. The system has the advantages that the problems such that the existing owners of cars in cities have difficulties in parking the cars and finding parking lots and payment is time consuming are comprehensively solved through the wireless internet and a simplest method, and the system is of good social benefit.

The transmission power is adjusted of a Forward Access Channel (FACH) from a base station to a mobile user terminal in a network for mobile telecommunications. The method comprises steps as follows. The base station sends a signal at a first transmission power level to the mobile user terminal. The mobile user terminal then sends a report of one or more parameter values dependent upon measured signal quality provided a predetermined reporting criterion is met. The base station then adjusts its transmission power to the mobile user terminal in consequence so as to maintain the measured signal quality within acceptable limits.

The invention relates to a method for the team formation and the separation of a cooperative adaptive cruise control vehicle team. The method comprises the following steps that: S1) defining a relevant critical distance, a safe distance, team formation upper limit length and the like; S2) sending a self-vehicle state to other vehicles by a vehicle, and receiving vehicle team adding or leaving information sent from surrounding driven vehicles; S3) detecting and identifying a vehicle distance and the surrounding environment of the vehicle; and S4) analyzing the information received by each vehicle according to a self-set rule set by a control system, feeding back an execution result to a communication system, and releasing execution information to each vehicle by a communication system. Themethod formulates various self-set rules for vehicle team formation and separation, wherein the self-set rules include a rule for adding a single vehicle into the vehicle team, a rule for carrying outvehicle team formation, and a rule for separating the vehicle team into a plurality of vehicle teams. Therefore, the team formation and the separation of the cooperative adaptive cruise control vehicle team can be realized.

The invention discloses a correction method of bicycle impact on saturation volume rate of turning motor vehicles at a signalized intersection, which can be applied to calculating timing of signal control at the intersection. The correction method divides a conflict between bicycles and turning motor vehicles into two phases by studying different states of bicycles which cross the intersection and defines a conflict area; in the first stage, the gathered waiting bicycles during the red light period cross the intersection in the manner of bicycle groups with high density and low freedom, and the conflict is analyzed based on time occupation ratio of the conflict area by bicycles; in the second stage, bicycles arriving randomly at the intersection in a random manner with low density and high freedom, and the conflict is analyzed based on a crosscutting gap theory, and an influence coefficient of the bicycles on the saturation volume rate of turning motor vehicles is calculated. By applying the timing at intersection calculated by adopting the correction method of the bicycle impact on saturation volume rate of turning motor vehicles at a signalized intersection to the practice, the conflict between motor vehicles and non-motorized vehicles at the intersection can be relieved, traffic capacity of the intersection can be improved, and delay of motor vehicles at the intersection can be reduced.