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1454results about How to "Lower acquisition costs" patented technology

Virtual private networks and methods for their operation

In methods and apparatus for routing packets through a communications network, a respective distinct broadcast address is assigned to each of a plurality of distinct sets of virtual ports. No virtual port belongs to more than one of the distinct sets. A respective egress address is assigned to each packet entering the network via an ingress virtual port. The respective egress address corresponds to a respective destination address of the entering packet when a correspondence between the destination address and an egress address is known. When no correspondence between the destination address and an egress address is known, the respective egress address is a broadcast egress address corresponding to the set comprising the ingress virtual port. The packet is routed according to the respective egress address. The routing is restricted to virtual ports belonging to the distinct set of virtual ports that includes the ingress virtual port. The distinct sets of virtual ports and their associated broadcast addresses define isolated virtual private networks within the network. Each physical port of the network may map one-to-one onto a corresponding virtual port, or may map onto a corresponding plurality of virtual ports, in which case the each virtual port of the plurality is associated with a respective distinct combination of a physical address of the physical port and a respective virtual network identifier.
Owner:RPX CLEARINGHOUSE

Automatic generation method for road network grid digital map based on GPS positioning

The invention relates to a GPS positioning-based road network grid digital map automatic generation method in the field of ground mapping. The invention is characterized in that vehicle-mounted GPS equipment is used for gathering data about the travelling track of a vehicle on a road network, that is, road information data; a computer is used for switching the travelling track data from geodetic coordinates to urban construction coordinates and then storing the travelling track data in a track database; the travelling track data in the track database is filtered and enhanced by the computer; the travelling track data after being subjected to processing, filtration and enhancement by the computer is then used for generating a sketch of a road network grid digital map; and finally, the computer is adopted to process the sketch and produce the road network grid digital map. The invention has the following advantages: the data source adopted by the invention is convenient and relatively cheap to acquire; and the road network grid digital map generated by the invention is complete and clear, has high precision, and changes in line with the actual road network, so that the map can better satisfy the application requirements for a road network map on timeliness and accuracy.
Owner:SHANGHAI JIAO TONG UNIV

Generating device for atmospheric bare electrode cold plasma jet

InactiveCN102625557ASimple structureLow jet temperaturePlasma techniquePlasma jetJet flow
The invention provides a generating device for an atmospheric bare electrode cold plasma jet. The generating device comprises a working gas source, a pressure reducing valve, an adjustable flow meter, a high-voltage power supply, a cylindrical shell, a nozzle electrode and a pin electrode, wherein the tail part of the cylindrical shell made of insulating material is connected with a gas supply system; the front end of the cylindrical shell is connected with the nozzle electrode through a thread; the pin electrode is fixedly arranged in a central hole of the cylindrical shell; a certain discharging clearance is kept between the tip of the pin electrode and the nozzle electrode; a plurality of through holes parallel to the central hole of the cylindrical shell are distributed around the central hole; the through holes are used for conveying the working gas to a discharging area in the nozzle electrode; a high-voltage output end of the high-voltage power supply is connected with the pin electrode; and a low-voltage output end of the high-voltage power supply is connected with the nozzle electrode and is grounded. Cold plasma is generated at the tip of the pin electrode by adjusting the high-voltage power supply and the flow of the working gas, and the cold plasma is jetted from an outlet of the nozzle electrode so as to form the cold plasma jet. According to the generating device provided by the invention, uniform and stable cold plasma jet can be obtained under an atmospheric open air environment.
Owner:DALIAN UNIV OF TECH

Horizontal arm type three-coordinate measuring and ruling machine

The invention discloses a horizontal arm type three-coordinate measuring and ruling machine, which includes a base, an upright column and a horizontal arm, wherein the upright column and the horizontal arm are made of lighter material, namely aluminum; all three shafts adopt two sets of linear slides; and the linear slide of the horizontal arm is mounted by adopting two mutually vertical surfaces, and an adjustable pull rod is mounted in the horizontal arm for adjusting the curve and deformation caused by other causes as self weight. The horizontal arm type three-coordinate measuring and ruling machine solves the problems in the market that the existing three-coordinate ruling machine has unstable mechanism, complex structure and high cost, and is complex to machine the parts and inflexible to operate. The shafts are mutually vertical and matched with the precise linear slides to realize the three-dimensional movement, so as to achieve the measuring and ruling functions in the three-dimensional space; and the three-coordinate measuring and ruling machine can support all sorts of triggering, analog scanning and non-contact optical measuring heads, and can be widely applied to the measuring and ruling of large mechanical parts as automobiles, motorcycles, excavators, ship engines and dies.
Owner:SHANDONG JINMA UNIONTECH METROLOGICAL TECH

Loaded type rail health state dynamic monitoring and intelligent analysis system and method

ActiveCN109910947ARealize the integration of transportation and inspectionHealth status real-time monitoring and analysisMeasurement devicesRailway auxillary equipmentBogieState parameter
The invention discloses a rail health state dynamic monitoring and analysis method. The method comprises the following steps: mounting signal collection hardware to a bogie of an operating train; ensuring that the signal collection hardware collects rail health state information during the operation of a train; analyzing collected rail health state data through a data analysis software; ensuring that data analysis software is loaded in a computer mounted in the body of the operating train or loaded in a cloud server. A loaded type rail health state dynamic monitoring and intelligent analysis system integrates devices, such as an inertial navigation system component, an ultrasonic flaw detection component, a laser displacement sensor, a laser silhouette sensor and a line-scan digital camera, in a modular manner, is loaded in the operating train, dynamically collects various rail health state dynamic parameters including rail dynamic geometrical shapes and positions, vehicle body accelerated speed, rail defect, and sleeper and fastener defect, at high frequency within operation period, realizes operation and detection integration, and accurately and finely guides rail maintenance.
Owner:BEIJING URBAN CONSTR DESIGN & DEV GRP CO

Method for screening and dewatering urban sludge efficiently

The invention relates to a method for screening and dewatering urban sludge efficiently. Sludge in an urban wastewater treatment plant is conveyed to a self-synchronizing translation elliptical vibrating screen for dewatering and screening, and then the urban sludge is dewatered efficiently by a method of a combination technique of chemical agent concentration, liquid tempering and box-type filter pressing. After the method detects the concentration of the sludge automatically, dosing amount is calculated and medicament is automatically added to realize automatic dosing; and a filter pressing and dewatering process can meet the requirements of the modernized wastewater treatment plant, the full automatic operation of a system can be implemented by the control of a PLC system, and operations, such as charge-in, the movement of a filter board, segmental filter pressing, positive and negative aeration, filter cloth flushing, unloading and the like can be completed by the remote control of the PLC so as to relieve the labor intensity of workers. Because of the successful adoption of a segmental filter pressing technique of low-pressure filtering and high-pressure extrusion, the operating efficiency is 2 to 3 times that of the conventional plate-and-frame filter press; and after the sludge is dewatered, the water contents of mud cakes of the urban sludge screened and dewatered by the method are reduced to below 60 percent.
Owner:SAFECLEEN TECH

Large filling bag ecological embankment and revetment building method for river lake channel

InactiveCN105178245ALow initial strengthImprove integrityBreakwatersQuaysCut and fillEngineering
The invention provides a large filling bag ecological embankment and revetment building method for a river lake channel. The method comprises the steps that (1), on the basis of cleaning and leveling, an embankment structure is filled with cleaned river lake bottom mud layer by layer through the large filling bag technology until the embankment structure reaches up to a designed elevation of the embankment top and the height of 0.5-1 m beyond the designed elevation is reserved through filling construction; (2), the cleaned river lake bottom mud is filled through a land pump, or special complete equipment and corresponding construction technologies are adopted to directly conduct mechanical paving and filling, and then the filled cleaned river lake bottom mud is sewn into bags; and (3), filling soil materials of the large geotextile filling bag embankment structure are taken from local resources, the bottom mud obtained through river lake regulation and channel excavation and cleaning is used as the filling soil materials, the initial water content of the filling soil materials is controlled within the range from 50%-80%, and the large filling bag embankment structure which is layered appropriately is adopted according to the practical situation. According to the method, the design is reasonable, the process is simple, construction is easy, operation is convenient, cost is low, popularization is easy, the ecological functions are good, and the method is applicable to ecological management and ecological channel construction of river lakes in soft soil areas.
Owner:NANJING HYDRAULIC RES INST

Farmland plastic film residue recycling and packaging combined operating machine

The invention relates to a farmland combination operating machine, and particularly relates to a farmland plastic film residue recycling and packaging combined operating machine capable of picking and packaging earth surface agricultural films and performing combined operation. The farmland plastic film residue recycling and packaging combined operating machine comprises a rack, a drive system and a walking wheel, wherein the rack is provided with a picking mechanism, a demolding mechanism and a packaging mechanism; ground wheels are arranged below the rack; the picking mechanism structurally comprises a roller, elastic teeth and an elastic tooth fixing framework; the roller is in a hollow cylindrical shape; the wall of the roller is provided with a bar-shaped hole; the demolding mechanism structurally comprises a demolding roller, a scraping plate and an arc outer cover; the packaging mechanism structurally comprises a rectangular packaging box body, a hydraulic oil cylinder I, a hydraulic oil cylinder II and a hydraulic oil cylinder III. The farmland plastic film residue recycling and packaging combined operating machine is compact and reasonable in structure, can perform picking and packaging combined operation on the earth surface agricultural films, and is economic and practical.
Owner:XINJIANG ACADEMY OF AGRI & RECLAMATION SCI

Intelligent segmental temperature control system of wind power blade die

The invention relates to an intelligent segmental temperature control system of a wind power blade die, which is provided based on the technical theory that segmental temperature control is bound to be carried out based on the differences on the formed region thickness of a designed blade structure and the energy-saving purpose can be achieved by lowering the dependence on external heating in a curing manufacturing procedure by utilizing the reaction exothermic character of a matrix material. To achieve the purpose, the invention adopts the technical measures of the construction of a die segmental temperature control pipeline, which ensures that each temperature segment can be heated or cooled independently based on requirements on thermal energy in the curing manufacturing procedure; the establishment of an intelligent temperature control system, wherein temperature and hardness data of the die and a blade shell can be captured to judge whether heating setting, exothermic peak initiating temperature and the states of completion degree, gel curing degree and the like are completed or conform to design values; and antecedent technical measures, wherein energy consumption is saved by utilizing the reaction heat of materials per se to heat and reaction and temperature control are combined to match the design of a temperature curve, which are helpful for obtaining the blades with uniform curing and excellent quality and can improve the production efficiency as a characteristic.
Owner:上海力仓实业有限公司

Method for measuring wind driven generator air gap through eddy current sensors

InactiveCN104154853AImprove air gap measurement accuracyImprove air gap control accuracyUsing electrical meansWind drivenRadial position
The invention discloses a method for measuring a wind driven generator air gap through eddy current sensors, and belongs to the field of measuring. At least four radial eddy current sensors are arranged on the surface of a generator stator, one axial eddy current sensor is arranged on the generator stator in the axial direction, and a key-phase sensor is arranged on the part, at the radial position of a rotating shaft of a generator, on a machine body or a rack; the signal output ends of the radial eddy current sensors, the signal output end of the axial eddy current sensor and the signal output end of the key-phase sensor are correspondingly connected with the signal input ends of a wind power state monitoring and collecting device respectively; the wind power state monitoring and collecting device reads and processes the sampling result and uploads the processed result to a database of a server through an Ethernet port, a workstation in a local area network or a remote workstation can have access to the database in the server, real-time air gap data of the wind driven generator are checked in real time, and different working modes or working patterns of the wind power state monitoring and collecting device can be controlled to be switched through air gap monitoring system software.
Owner:上海瑞视仪表电子有限公司

Method and system for on-line monitoring of running state of nuclear power equipment

The invention discloses a method and system for on-line monitoring of the running state of nuclear power equipment. The system includes a nuclear power equipment database; a model building module used for building a nuclear power equipment characteristic parameter on-line calculation model according to the nuclear power equipment database; and a nuclear power equipment running state diagnosis module used for analog calculation of a characteristic parameter predicted value of nuclear power equipment to be tested of the previous moment before the current moment according to the nuclear power equipment characteristic parameter calculation model, a contrastive analysis of the characteristic parameter predicted value and a real-time detection value of the characteristic parameter of the nuclear power equipment is made, and an on-line monitoring result of the running state of the nuclear power equipment is obtained according to the contrastive analysis. A nuclear power plant manager can discriminate abnormal or fault equipment among numerous nuclear power equipment according to the monitoring result, thereby providing a scientific basis for guiding equipment maintenance or replacement work, and improving operation safety and stability of the nuclear power plant.
Owner:中广核工程有限公司 +1

Novel multifunctional numerical control 3D printing equipment and using method

The invention provides novel multifunctional numerical control 3D printing equipment which comprises a workbench, wherein a portal frame is arranged on the workbench, the novel multifunctional numerical control 3D printing equipment is characterized in that a processing cutter is hung on the portal frame through a hanging drive mechanism 1, and a 3D printing head is hung on the portal frame through a hanging drive mechanism 2. According to the invention, only one set of numerical control equipment is used, processes of material increase manufacturing and material decrease manufacturing can be executed, one piece of equipment serves double purposes, and the purchasing cost of the numerical control equipment is lowered; a polygonal rotating tower mechanism is used, and a process capability of multi-material plastic 3D printing is provided. The process of material decrease manufacturing of CNC four-axis linkage can be accomplished independently, pre-processing to an insert can be performed, and surface finish machining can be performed on 3D printed end products. The novel multifunctional numerical control 3D printing equipment can be used for processing 3D printing process end products made of metal-plastic and plastic-plastic insert composite materials.
Owner:JINAN AIHUADA NEW MATERIAL CO LTD
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