36results about How to "Improve traffic quality" patented technology

A rotary turbomachine, and particularly a turbojet engine, has a compressor stage that is especially adapted for operation in the transonic region. The compressor stage includes a rotor (1) having a hub (2) and a plurality of compressor blades (3) extending radially therefrom, and a stator having a plurality of compressor blades extending radially between a stator hub and a housing. The hub (2) of the rotor (1), and/or the hub of the stator, and/or the housing of the stator, have a circumferential surface contour that is not continuously rotationally symmetrical. Namely, a concave contour (K) is provided in the circumferential surface of the hub near the base of each blade (3) on the pressure side (PS) thereof, while the circumferential surface on the suction side (SS) of the base of each blade has a contour that is linear, slightly convex, convex/concave, or slightly concave to a lesser degree than the concave contour (K) on the pressure side of each blade. The hub contour slopes and transitions smoothly radially outwardly from the concave contour (K) on the pressure side to the flatter or convex contour on the suction side. In this manner, fluid flow velocities on both the pressure side and the suction side of each blade are reduced, especially under transonic operating conditions, and compression shock losses can be minimized.

A method for designing gas turbine engine components using a coupled parametric analysis of part geometry and flow control is disclosed. Included are the steps of parametrically defining the geometry of the duct wall shape, parametrically defining one or more flow control actuators in the duct wall, measuring a plurality of performance parameters or metrics (e.g., flow characteristics) of the duct and comparing the results of the measurement with desired or target parameters, and selecting the optimal duct geometry and flow control for at least a portion of the duct, the selection process including evaluating the plurality of performance metrics in a pareto analysis. The use of this method in the design of inter-turbine transition ducts, serpentine ducts, inlets, diffusers, and similar components provides a design which reduces pressure losses and flow profile distortions.

The invention discloses a CBD (central business district) signalized intersection pedestrian crossing traffic behavior supervision system. The system disclosed by the invention starts from the red light running psychology of pedestrians, aims to ensure the pedestrian crossing safety, adopts a thought of combining facility guidance and regulation breaking punishment, and develops the CBD signalized intersection pedestrian crossing traffic behavior supervision system which is formed by an intersection pedestrian supervision monitoring device and a background control center monitoring management platform. The system integrates supervision, detection, evidence collection, alarming, statistics and face recognition, realizes functions of signalized intersection pedestrian red light running supervision, regulation breaking record statistics, system equipment maintenance, real-time monitoring management and the like, and can provide partial basic data for improving and designing an intersection. A more importance value lies in that the system carries out supervision and persuasion on pedestrian behaviors, evidence collection can be performed effectively, and punishment is carried out by being matched with relevant laws, thereby being capable of gradually reducing red light running behaviors of the pedestrians, significantly improving the traffic order of a CBD signalized intersection, and reducing occurrence of traffic safety accidents.

The invention discloses an intelligent traffic signal light control system, which comprises a ground sense line, a PLC controller, a computer processing system and a signal light. The ground sense line and the signal light are respectively connected to a PLC controller, and the PLC controller is connected to a computer processing system. The line is used to detect the traffic flow information, and the PLC controller is used to obtain the detected traffic flow information from the ground sense line and send the traffic flow information to the computer processing system. The signal lamp sends a control signal, and the signal lamp performs signal display according to the control signal. The invention automatically adjusts the time according to the traffic flow, so that the time in the direction with fewer or no vehicles is automatically shortened, and the time in the direction with more vehicles is automatically changed to effectively relieve the traffic pressure in the city, reduce traffic accidents, save a lot of travel time for the people, and create Bring out more social value.

A vehicle passing intelligent management system based on Bluetooth technology belongs to the technical fields of wireless communication, computer network and electron; a gate inhibition base station of the intelligent management system is connected with a car-mounted terminal in a wireless way, and one gate inhibition base station can be loaded with a plurality of car-mounted terminals; a P3.0 port and a P3.1 port of a microprocessor are respectively connected with a UART-RX terminal and a URAT-TX terminal of a car-mounted Bluetooth transceiving module; a key control circuit, a data display circuit, a buzzer are connected with an I/O port of the microprocessor for simulating serial communication; a P3.2 port of the microprocessor controls an enable terminal of the data display circuit; an opening/closing hardware system of gate inhibition and a traffic lane indicating lamp control system are both controlled by a controller of a base station center, and the traffic lane indicating lamp control system is connected with the controller of the base station center by an embedded Bluetooth technology in a wireless way. The system can lead vehicles to come in and go out without a stop based on identification, so as to avoid vehicle congestion and ensure the passing quality to be high. The intelligent management system can automatically search, distinguish and complete the whole communication and pass process and is closely combined with an information/ property management system, so that the system and the management have low cost and the anti-counterfeiting function, and are safe and reliable.

The invention discloses an asphalt pavement cooling device, which comprises two main parts, i.e. an evaporation pipe section and a condensation pipe section. The condensation pipe section includes a condensation pipe outer pipe and a condensation pipe inner pipe, and the evaporation pipe section includes an evaporation pipe main pipe and evaporation pipe branch pipes. When the pavement temperature is higher than the air temperature, a working medium filling the device undergoes gas-liquid circulation spontaneously so as to dissipate the pavement heat into the air and reduce asphalt pavement rutting, flushing, translation and other diseases caused by temperature rise. Single condensation pipe is connected to a plurality of evaporation pipes, the cooling area of single condensation pipe is increased, and the cooling efficiency is greatly improved. Also, the condensation pipe can be combined with street lamps, advertising boards and other road affiliated facilities into a whole, thus having no influence to the appearance.

The invention discloses a multi-level differential prevention and control method for the operation safety of a bridge. The method comprises the following steps that: the operation risk level of a to-be-detected bridge is determined; when the operation risk level is A, the prevention and control facilities are traditional traffic safety facilities; when the operation risk level is B level, the prevention and control facilities are traditional traffic safety facilities, a risk early warning system I and a risk disposal system I; when the operation risk level is C, the prevention and control facilities are traditional traffic safety facilities, risk early warning system II, a dynamic speed limiting system and a risk disposal system II; and when the operation risk level is D, the prevention and control facilities are traditional traffic safety facilities, a risk early warning system III, a dynamic speed limiting system and a risk disposal system III. The system can effectively assist a driver, enables a vehicle to safely and smoothly pass through a bridge, improves the traffic quality, improves the traffic service level, and provides a certain technical guarantee for the operation safety of the bridge.

The invention discloses a community safety protection-based express distribution system. The system comprises an information obtaining module used for obtaining recipient information of a parcel, an information comparison module used for comparing the recipient information of the parcel with preset community resident information and releasing a courier when the recipient information of the parcelis matched with the preset community resident information, and a route planning module used for planning a parcel delivery route according to the recipient information and a real-time position of thecourier after release of the courier and displaying the parcel delivery route to the courier. Therefore, the frequent registration and check time of the courier is shortened; the traffic quality of acommunity gate is improved; the delivery efficiency of the courier is improved; the safety quality of a community is improved; and the experience of community residents is enhanced.

The invention provides a smart city traffic signal lamp control system and a control method thereof, and the system comprises an acquisition module and a traffic signal lamp time control module. The method comprises the following steps: collecting vehicle data and monitoring data, and controlling the time change of traffic lights based on the monitoring data or the vehicle data; wherein the vehicle data comprises the traffic flow length of waiting for traffic lights and the vehicle driving direction, and the monitoring data comprises the current time and the current traffic intersection brightness; the system can reasonably adjust the display time of different signals of the traffic signal lamp according to the traffic condition of the current traffic intersection, improves the command efficiency of the traffic signal lamp at the traffic intersection, prevents the traffic intersection from being jammed, and improves the urban traffic quality.

The invention relates to an integrated low-pulsation seawater desalination energy recovery and pressurization device. A structure type of a rotary pressure exchanger and a swash plate plunger type booster pump is adopted; the low-pressure area of a fresh seawater valve plate has an open design; a pressure exchanger cylinder hole directly sucks water from a cavity of a device shell during operation, so that the suction performance is improved; the inlet of the booster pump is equipped with high-pressure water, so that the self-suction performance is improved; the flow pulsation of a high-pressure seawater outlet is reduced through water suction and drainage of a plurality of plungers, the flow quality of an energy recovery supercharging device is improved, the impact of the outlet flow pulsation of the device outlet on a reverse osmosis membrane is reduced, and the service life of the reverse osmosis membrane is improved. The device provided by the invention overcomes the defects of lowintegration degree, large flow pulsation, large volume weight and the like of a rotary energy recovery device in the prior reverse osmosis seawater desalination system, and has the obvious technicaladvantages of high energy recovery rate, high flow quality, high integration degree, small structure size and the like.

The invention provides a road segment dynamic fee collecting control method guaranteeing lane quality. The method comprises the steps of: acquiring a road traffic saturation degree of a fee collectingroad segment in real time by using a traffic flow detection apparatus; when the detected road traffic saturation degree is less than a set threshold, collecting a road using fee x0, wherein x0 changes dynamically according to a road using fee regulation factor beta 0; when the detected road traffic saturation degree is greater than the set threshold, determining that the lane quality of the roadsegment reduces and adding a road quality regulation fee x1 on the basis of collecting the road using fee of the road segment, wherein the regulation fee is determined by the road traffic saturation degree which is detected in real time and a road quality fee collecting regulation factor beta 1; defining a fee collecting price update state period as T. The quality fee collecting price of a road segment dynamically changes with the traffic state of the road segment, so that dynamic and reasonable fee collecting control for road segments is realized and traffic quality of lanes of road segmentscan be guaranteed.

The present invention relates to bridge and highway, and is especially fulcrum of bridge pier. One transition board is set between bridge and road, and the transition board has one end set on the pier of bridge and the other end set on the pier of road. In case that the bridge and the road are not level, the transition board will absorb the height difference. Or, each of the pier has one end board is set. When the bridge and the transition board are not level, the end board connected to the pier of the bridge is regulated, and when the road and the transition board are not level, the end board connected to the pier of the road is regulated, so as to ensure the leveling between the road and the bridge.

The invention discloses a feature recognition based community vehicle entering/exiting management method. The method comprises the following steps: presetting logistic vehicle model information and logistic vehicle mark information in a vehicle database; collecting the vehicle model information of a to-be-detected vehicle; comparing the vehicle model information of the to-be-detected vehicle with the logistic vehicle model information in the vehicle database and judging if the to-be-detected vehicle is the logistic vehicle model according to a comparison result; if the to-be-detected vehicle is the logistic vehicle model, collecting the mark information of the to-be-detected vehicle; comparing the mark information of the to-be-detected vehicle with the logistic vehicle mark information in the vehicle database and judging if the to-be-detected vehicle is the logistic vehicle according to the comparison result; and if the to-be-detected vehicle is the logistic vehicle, allowing the to-be-detected vehicle to pass.

The invention discloses an express address-based community safety protection method. The method comprises the following steps of: obtaining receiver information of a package; comparing the receiver information of the package with preset community resident information, and discharging a courier according to the comparison result; and after discharging the courier, planning a package sending path according to the receiver information and a real-time position of the courier, and displaying the package sending path to the courier. According to the method, the time, for frequent registration and verification, of the couriers is decreased, the traffic quality at community gates is improved, the sending efficiency of the couriers is improved, the community safety quality is improved and the experience of the community residents is increased.

Systems and methods for enhancing quality of a flow image of a sample of a subject are provided. The method comprises acquiring a first flow image from a plurality of first OMAG scans of the sample, and acquiring a structure image from a second OMAG scan of the sample. Data based on pixel intensity values from the flow image and pixel intensity values from the structure image are then plotted onto a graph and from the graph, may be differentiated into a first data group representing static structure signals and a second data group representing flow signals. The method then includes suppressing pixels in the flow image corresponding to the first data group. The flow signal may also be multiplied by a weighting factor to suppress artifacts in the image.

The invention provides a device which has simple design, is convenient to mount and can effectively lessen the hooting noise of a motor vehicle. The invention adopts the following technical scheme: a delay controller is additionally mounted in a horn control circuit of the motor vehicle, and a real-time speed value of a speedmeter sensor of the motor vehicle is input into the delay controller. The invention has the advantages that unnecessary hooting noise can be greatly lessened under the condition of a traffic jam in the city center, or during the rush hour of commuting traffic, lowers the noise pollution and purifies the environment.

The invention provides an urban physical examination data analysis method and system based on an intelligent traffic integrated data warehouse, and the method comprises the steps: S1, obtaining a target data type, screening data in the intelligent traffic integrated data warehouse according to the target data type, and obtaining a plurality of pieces of target data conforming to the target data type; s2, processing a plurality of target data to obtain a target data analysis curve graph; s3, acquiring a comparison standard curve graph, and performing comparison analysis on the target data analysis curve graph according to the comparison standard curve graph to generate a quality degree curve graph; and S4, integrating the advantage and disadvantage degree curve graphs corresponding to all the target data types to generate an urban traffic physical examination report.