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7051 results about "Cost performance" patented technology

Cost performance index (CPI) A measure of the efficiency of expenses spent on a project. The formula that a business normally uses to assess the cost performance index (CPI) is the ratio of earned value (EV) over actual costs (AC); therefore, CPI is equal to EV divided by AC.

Backside protective sheet for solar battery module and solar battery module using the same

There is provided a backside protective sheet for a solar battery module that is excellent in strength as well as in various properties such as weathering resistance, heat resistance, water resistance, light resistance, wind pressure resistance, hailstorm resistance, chemical resistance, moisture resistance, antifouling properties, light reflectivity, light diffusivity, and design, and is particularly excellent in the so-called “moisture resistance,” which is the ability to prevent the entry of moisture, oxygen and the like, and durability against performance degradation with time, particularly against hydrolytic degradation and the like, and is also excellent in protective capability. There is also provided a backside protective sheet for a solar battery module, which can facilitate inventory control by properly using the front side and back side of the protective sheet depending upon applications and is excellent in cost performance, and a solar battery module using the same. The backside protective sheet for a solar battery module comprises: a deposited assembly comprising a vapor-deposited film of an inorganic oxide provided on at least one side of a substrate; and a transparent or translucent heat-resistant polyolefin resin layer provided on both sides of the deposited assembly.
Owner:DAI NIPPON PRINTING CO LTD

Distributed storage oriented cloud storage security architecture and data access method thereof

The invention discloses a distributed storage oriented cloud storage security architecture and a data access method thereof. The distributed cloud storage oriented security architecture comprises a cloud storage server, a distributed storage manager, a wafer breaker and storage devices, wherein the distributed storage manager and the cloud storage server are respectively connected with a client-side; the distributed storage manager and the cloud storage server are connected by a fiber channel (FC) or a routing switch; the wafer breaker is imbedded in the distributed storage manager; the distributed storage manager is connected with the storage devices by the FC or Iscsi; and the storage devices are connected by a network attached storage (NAS) or a storage area network (SAN). The storage devices are located at different places and are redundant mutually, thus improving the fault-tolerant ability of the devices and the optimal storage use ratio; the wafer breaker is used for carrying out fragment on stored data, so that the data are fragmented into data fragments which can not be identified by other authentication systems, and the fragmented data have relative confidentiality and security in the process of network transmission and data storage; and the storage devices and the server are the devices with higher cost performance, thus reducing the cost.
Owner:XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY

Vehicle-mounted intelligent supervising and early warning device for running status of track traffic vehicle

InactiveCN101274636AImprove the level of intelligence and informatizationPowerfulRailway auxillary equipmentRailway profile gaugesInformatizationInformation processing
The invention relates to an intelligent vehicle-bone type running state monitoring and early warning device used for rail transporting vehicles. The device comprises at least a group of sensing component units used for obtaining the vehicle operation state, including the operation state of wheels on rails, the state of the deformation of a vehicle chassis component and a railway and abnormal road conditions or the state of vehicle-bone devices; an intelligent sensing information processing unit based on a micro processor and used for processing the sensing signals of the vehicle state, including signal processing, data-collecting processing, image edge detection and extraction, image tracking, the processing and the intelligent analyzing of mechanical vibration / noise information, data identification and extraction, the learning of vehicle states and relevant background information, the forming of monitoring and early warning results and information recording and storing; input / output units used for the output, the operation, the control and the data communication of the monitoring and early warning results; and a power supply unit. The intelligent vehicle-bone type running state monitoring and early warning device has the advantages of multiple functions, high intelligentization and informatization level, high cost performance, high creditability and convenient installation, etc., is easy to be expanded, and can be applied under all weather conditions.
Owner:林贵生

Modular hydraulic-drive four-leg robot with variable leg shape structures

The invention discloses a hydraulic-drive four-leg robot. The modular hydraulic-drive four-leg robot has the advantages that the hydraulic-drive four-leg robot is good in dynamic balance and high in topographical adaptability, loading capacity and cost performance, and is in a modular and bionic structural design, four leg shapes can be switched over by means of quickly assembling and disassembling subassemblies, the modular hydraulic-drive four-leg robot is multipurpose, and merits and shortcomings of various leg shapes are verified by experiments at a physical prototype stage; each single leg is provided with two leg sections, has three degrees of freedom and comprises a hip joint and thigh assembly, a knee joint and shank assembly and a side sway assembly; a side sway and connecting block combining form is adopted for each thigh portion according to a bionic principle, so that sufficient rigidity and strength are guaranteed, the hydraulic-drive four-leg robot can bear a load stably while the weight of the robot is reduced to the greatest extent, and sufficient activity space for hydraulic cylinders is guaranteed; shank portions comprise foot-end rubber pads and passive retractable bidirectional spring shock absorption mechanisms, and instant impact force generated when the robot is in contact with the ground can be effectively buffered and absorbed under multiple shock absorption actions; problems of limited service lives of components and vulnerability of electronic elements such as foot-end force sensors due to the fact that impact force disappears and springs are rebounded quickly when an existing robot leaves the ground can be solved by the aid of the bidirectional spring mechanisms.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY

Damping ratio adjustable tuning quality damper

ActiveCN101457554AChange the damping ratioDamping Ratio OptimizationSpringsSolid based dampersDamping ratioEngineering
The invention specifically relates to a mass tuned vibration reducer used for regulating the subsidence ratio of the vibration of the related structures. The mass tuned vibration reducer comprises a mass block, a spring, a damper and a base, and is characterized in that the damper is an adhesion-type damper formed by a damping cylinder, adhesive damping fluid and a piston, wherein, the piston and the adhesive damping fluid are arranged in the damping cylinder, and at least part of the piston is immerged into the adhesive damping fluid. The mass tuned vibration reducer adopts the adhesion-type damper formed by the adhesive damping fluid and the piston and can provide three dimensional damping, so as to effectively prevent side tumbling and ensure the vibration reducer realizes smooth actions; vibration mass is not needed to be provided with a special guide device, so that the mass tuned vibration reducer has reliable work and higher cost performance, and basically needs no maintenance. Meanwhile, the mass tuned vibration reducer realizes the aim of regulating the natural frequency and the subsidence ratio at any time, thus better exerting the vibration absorption performance of the mass tuned vibration reducer, ensuring stableness and safety of the pedestrians and vehicles on the large-span bridge and the thin and high building, contributing to prolonging the service lives of the thin and high building and the bridge, and having remarkable economic and social benefits.
Owner:尹学军 +1

Load balancing method and system facing mixed cloud application

The invention discloses a load balancing method and system facing mixed cloud application and a corresponding mixed cloud load balancing system. Aiming at the fact that a cloud tenant uses mixed clouds to calculate IaaS (infrastructure as a service) platform deployment application, the invention solves the problem of load balancing of the application under a multi-cloud environment. The system and method use a layered load balancing mechanism, load state information and resource state information of private clouds and public clouds are dynamically collected by a heartbeat packet at an upper layer, and issuing priorities of tasks to respective clouds are adjusted; at a lower layer, and LBaaS (load balancing as a service) internally provided form the clouds is used to perform load balancing among virtual machines. During outbreak of the cloud application, the public cloud with the highest cost performance can be selected for resource extension according to price fluctuation of the public clouds and the requirement of the cloud tenant on the minimal cost budget. According to the invention, the cloud tenant can be helped to customize application requirements per se when using the mixed clouds, and automatically select a cloud resource use scheme with the highest cost performance.
Owner:HUAZHONG UNIV OF SCI & TECH

None-angular displacement parallel damping device

A none-angular displacement parallel damping device mainly comprises a movable platform, a fixed platform, four branches and damper springs, wherein the branches are used for connecting the two platforms and are identical with one another in structure. One end of a first connecting rod in the branches is connected with the fixed platform through a first revolute pair, the other end of the first connecting rod is connected with one end of a second connecting rod through a second revolute pair, and the other end of the second connecting rod is connected with the movable platform through a cylindrical pair. The axis of the first revolute pair is parallel to that of the second revolute pair, and the axis of the second revolute pair is parallel to that of the cylindrical pair. The whole device is square. The four branches are symmetrically and evenly distributed. Four corners between the fixed platform and the movable platform are respectively and perpendicularly provided with one first damper spring, and the two sides of the cylindrical pair are respectively sleeved with one second damper spring. The none-angular displacement parallel damping device is simple in structure, small in occupied size, easy to process and high in cost-performance ratio, and has broad application prospect in many fields.
Owner:YANSHAN UNIV

Anti-rut asphalt modifier and preparation method thereof and modified asphalt and application thereof

The invention discloses a traffic anti-rut asphalt modifier and a preparation method thereof; the asphalt modifier is prepared from the following components in parts by weight: 20 to 200 parts of thermoplastic elastomer, 5 to 450 parts of polyolefin, and 5 to 400 parts of rubber powder. Simultaneously, the invention also discloses modified asphalt which contains the asphalt modifier and application of the modified asphalt in asphalt mixture. The invention can significantly improve the high-temperature performance and the anti-rut capability of the asphalt mixture, improves anti-water damage and anti-low temperature cracking and other performance, and has high cost performance. Compared with asphalt modification, the invention does not need to add asphalt modification equipment, can significantly reduce energy consumption and loss in the production process, can realize long-termed inventory, prevents the problem of the poor storage stability of modified asphalt, does not affect the mixing proportion design, does not change the gradation of the asphalt mixture under any content, only finely adjusts the asphalt-aggregate ratio, has simple construction process, and realizes random adding through a direct feeding method.
Owner:SHENZHEN OCEAN POWER INDUSTRIAL CO LTD +3

High electrical property and low corrosion flame retardant reinforcing nylon material and preparation method thereof

The invention discloses a high electrical property and low corrosion flame retardant reinforcing nylon material and a preparation method thereof, aiming at solving the defects of low electrical property and high corrosion caused by red phosphorus based flame retardant added into flame retardant reinforcing nylon in the prior art. The invention adopts the technical scheme that the high electrical property and low corrosion flame retardant reinforcing nylon material disclosed by the invention has the formulation (by weight percent): (1) 40-65% of nylon 66 resin, (2) 10-20% of red phosphorus based flame retardant masterbatch, (3) 1-5% of compatilizer, (4) 3-10% of synergistic compound flame retardant system, (5) 0.5-5% of acid absorbent, (6) 0.1-0.5% of antioxidant, (7) 0.2-0.8% of lubricating agent and (8) 10-30% of glass fiber; and the reinforcing nylon material can be prepared by mixing all the components in a high-speed mixing machine for 1-2min and then putting into a twin-screw extruder for extrusion and pelleting. The flame retardant reinforcing nylon material is excellent in the electrical property, low in corrosion (extremely low in corrosion for equipment and a mould) as well as high in fluidity, heat resistance and cost performance, and is capable of meeting the requirements of electrical and electronic appliances such as a temperature controller, a contactor, a circuit breaker and the like as well as domestic appliance products.
Owner:GUANGDONG WAYLAM ENG PLASTICS

Method and system for automatically identifying urban traffic accident

The invention belongs to the field of intelligent traffic video image monitoring and video image analysis, and in particular relates to a method and a system for automatically identifying an urban traffic accident. The method for automatically identifying the traffic accident comprises the following steps of: acquiring an urban road video image sequence; performing foreground vehicle separation based on a mixed Gaussian background model; performing a multi-target vehicle tracing algorithm based on a Camshift algorithm and a kalman filtering combination; extracting traffic accident determiningparameters such as speed variation, horizontal position variation, vertical position variation, moving direction variation and the like; and proposing a multi-featured weighted fusion automatic accident identification algorithm. Traffic accident information is transmitted to a traffic control center in time by a transmission unit and a display unit, so that the traffic accident can be quickly treated, an effective and flexible road traffic monitoring means with high cost performance is provided for traffic management, and new thought is provided for the development of a high-efficiency intelligent video traffic accident system.
Owner:UNIV OF SCI & TECH BEIJING

High-precision laser photocuring 3D (three dimensional) printer

The invention relates to a high-precision laser photocuring 3D (three dimensional) printer. The high-precision laser photocuring 3D printer comprises a shell and a pedestal. The high-precision laser photocuring 3D printer has the beneficial effects that one end of a high-precision ball screw is connected with a servo motor, the control precision of the servo motor is guaranteed by a rotary encoder at the rear end of a motor shaft and is accurate, and the high-precision laser photocuring 3D printer utilizes the servo motor, so that the printer is stable, and the energy consumption is reduced; as the ball screw has the characteristics of high positioning precision, small friction force, high rigidity and strong load capacity, the molding precision of the printer is high; a circuit control module is connected with a touch screen and a power supply switch respectively through data wires to intelligently control the printer, so that the control precision and processing efficiency are increased; a digital projection device comprises a digital projector horizontally fixed on the upper side of the pedestal, and a plane mirror, so that the structure of the printer is compact; the digital projection device comprises an ultraviolet source and a focusing lens, and the focusing lens is arranged above the ultraviolet source, so that the realizing theory is simple, and the cost performance is high.
Owner:RUIAN MAITIAN NETWORK TECH

Multifunctional data acquisition module based on cpci bus

The invention relates to a multifunctional data acquisition module based on a compact peripheral component interconnect (CPCI) bus. The multifunctional data acquisition module comprises a hardware module and a field-programmable gate array (FPGA) program. The hardware module comprises an impedance control circuit board, an electronic component, a small computer system interface (SCSI100) signal connection socket, a standard CPCI bus connector, and a standard 3UEurocard front panel. The impedance control circuit board and the electronic component are the core functional carriers of the invention and are divided into eight functional units such as an analogue-digital (AD) conversion module, a digital-analogue (DA) conversion unit, a timer unit, a counter unit, a universal input-output (IO) unit and an auxiliary circuit unit. The FPGA program comprises an AD conversion module, a DA conversion module, a timer module, a counter module and a universal IO module and is programmed and developed by Verilog hardware description language (HDL). The multifunctional data acquisition module has steady performance, high reliability, high bus signal driving capability, far transmission distance, simple structure, powerful function, high cost performance, is convenient to use, and can perform long-term and continuous mass data transmission.
Owner:BEIHANG UNIV

Multi-functional grid-connected inverter and grid-connected inverter control method

The invention belongs to the field of electrical engineering, distributed power generation and power quality control, and aims to provide a multi-functional grid-connected inverter and a grid-connected inverter control method. The grid-connected inverter comprises a direct-current bus bar with a capacitor and three sets of single-phase full-bridge inverter circuits sharing the direct-current bus bar, the direct-current output ends of a distributed power supply or a grid-connected energy-storing generating set are connected to both ends of the capacitor of the direct-current bus bar, the output of each set of single-phase full-bridge inverter circuit is connected to a filter, and the output ends of each filter are connected with a distribution network of the 380V voltage class through a single-phase step-up isolation transformer. According to the invention, the grid-connected inverter equipment is effectively utilized to carry out effective control on the power quality of points of interconnection, so that the grid-connected inverter is multi-purpose and multi-functional, the cost performance of the grid-connected inverter is enhanced, the investment, operation and maintenance cost of a system can be reduced, and the reliability of the system can be enhanced. The principle of the provided control scheme is clear, and the control scheme is highly operable and reliable in operation.
Owner:ZHEJIANG UNIV

Split air conditioner with fresh air purification intelligent control device

The invention discloses a split air conditioner with a fresh air purification intelligent control device. The split air conditioner with the fresh air purification intelligent control device comprises an outdoor unit and an indoor unit, wherein a fresh air pipe, a fresh air valve, an air return valve, an air quality detection sensor, a purification and filtering system, an evaporator, an auxiliary heater, a double-air-inlet low-noise centrifugal air supply fan and an air supply outlet with manual adjustable swing blades are sequentially arranged in the indoor unit from bottom to top. The split air conditioner with the fresh air purification intelligent control device fully solves the problem of poor indoor air quality, and outdoor fresh air can be introduced inside at proper time and can be purified; temperature and humidity adjustment can be realized; indoor VOC harmful gas can be removed; the air conditioner is provided with an internal circulation working mode and an external circulation working mode, i.e., a fresh air mode and a mixed air mode; the one-step filtering efficiency of inhalable particulate matters PM2.5 at the indoor air outlet can reach more than 90 percent and the national good standard of less than 35mg can be reached; the split air conditioner with the fresh air purification intelligent control device is convenient to install, and the installation, debugging and maintenance are facilitated by adopting a split design; the cost performance of the entire air conditioner is high, and the air conditioner is low-carbon, energy-saving, healthy and comfortable.
Owner:CHENGDU GUIGU ENVIRONMENTAL TECH
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