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35results about How to "Mass storage" patented technology

High-speed data acquiring and digital signal processing board based on FPGA (Field Programmable Gate Array)

The invention discloses a high-speed data acquiring and digital signal processing board based on an FPGA (Field Programmable Gate Array), which is characterized by being integrally provided with an analog signal input and A/D (Analog-to-Digital) conversion module, a digital signal processing module and a communication module, wherein the analog signal input and A/D conversion module comprises a signal conditioning circuit and an A/D conversion module; the digital signal processing module comprises an FPGA module, a storage DDR2 and a data storage FLASH; the digital signal processing module is used for processing original sampling data through the steps of fault starting judgment, fault data shift out and wavelet transform processing; an embedded network is realized by the FPGA module; the communication module is connected with the FPGA module; and a networked physics layer chip is cooperated with an FPGA embedded network to realize the purposes of exchanging, collecting and calculating results with other plates or a background computer. According to the high-speed data acquiring and digital signal processing board, high-frequency transient state traveling wave can be synchronously collected and quickly processed.
Owner:ANHUI NANRUI JIYUAN POWER GRID TECH CO LTD +1

Storage battery common manager based on digital control

PendingCN107425561ARealize pulse charge and dischargeThe charging and discharging process is controllableCharge equalisation circuitCells structural combinationDriving modeMosfet circuits
The present invention relates to a storage battery common manager based on digital control. The manager comprises a box body, an SWD download interface, a sampling interface, driving interfaces, a serial screen interface, a RS232 test interface, an upper computer, a communication interface and a CAN communication interface connected with an embedded microcontroller are arranged at the external portion of the box body, and the box body is internally provided with a control circuit board, a four-way PWM driving circuit boards and four-way mosfet circuit branches through fasteners; each mosfet circuit branch comprises mosfet being reversely connected in series and being connected in parallel with a diode in the internal portion of the mosfet, the PWM driving circuit boards respectively drive each mosfet circuit branch through four driving interfaces, mosfet drains are respectively connected with cathodes of four storage batteries through output terminals, the output ends of each two mosfet circuit branches are connected to form a connecting-out terminal, and two connecting-out terminals are connected with the cathode of a switching power supply. The storage battery common manager based on the digital control utilizes a single-chip microcomputer to perform digital control, the driving mode of the mosfet employs PWM driving, and the regulation of the PWM duty ratio is performed to realize pulse charging and discharging.
Owner:SHUANGDENG GRP

Power system load modeling method based on electric energy quality monitoring system

ActiveCN102377180BSolving Data Source IssuesHas global convergenceInformation technology support systemAc network circuit arrangementsPower qualitySimulation
The invention relates to a power system load modeling method based on an electric energy quality monitoring system, belonging to the field of power system measurement and load model identification. The method comprises the following steps of: acquiring power grid disturbance data by utilizing the electric energy quality monitoring system, carrying out data processing including smoothing filtering and zero shill rectifying; taking a ZIP static load model connected in parallel with a three-order induction motor model as a dynamic load model by using an asymmetric disturbance data load modeling method; identifying the model by using an improved clonal selection algorithm; verifying the fitting condition of model output power and actually measured load power under different fault conditions, and outputting an MI card and a fitting curve according to a BPA (Brushless permanent magnet) motor. In the invention, data are acquired by utilizing the electric energy quality monitoring system, the problem of data sources in the load modeling process is solved, and the parameter of the load model is identified by using the improved clonal selection algorithm, therefore, the identification precision is high, and the characterstic of global convergence is achieved. The load model identified by using the method approaches to the actual situation and is suitable for actual engineering application.
Owner:ELECTRIC POWER RES INST OF GUANGDONG POWER GRID

Energy self-supply device for collection and purification of pelagic seawater

The invention discloses an energy self-supply device for collection and purification of pelagic seawater. The device comprises a water storage traveling mechanism, a pressure-resistant solar power generation driving mechanism, a water quality intelligent detection filtering mechanism, two six-mouth water-pumping mechanisms and two arc-shaped protection mechanisms, wherein the water storage traveling mechanism comprises an electric energy storage block, a seawater storage tank, an underwater propeller and four clamping claw assemblies, the pressure-resistant solar power generation driving mechanism comprises a plurality of solar cell panels, a cell panel steering assembly and an electric power output component, and the water quality intelligent detection filtering mechanism includes a waterquality detecting mechanism and two water quality composite double-layer filtering mechanisms; and each water quality composite double-layer filtering mechanism includes an AI intelligent engine component, a first-stage rotator, a first-stage water quality filter net, a second-stage rotator and a second-stage water quality filter net. Not only can automatic collection and purification of the seawater be achieved, but also the water quality of a sea area can be evaluated and determined, so that effective first-hand data for marine protection and detection is provided.
Owner:SHANDONG UNIV OF SCI & TECH

Plant straw ecological board and preparation method thereof

The invention discloses a plant straw ecological board and a preparation method thereof. The preparation method comprises the following steps of preparing a special adhesive for the plant straw ecological board, preparing a special treating agent for the plant straw, treating the plant straw by using the special treating agent for the plant straw to prepare straw crushed aggregates, mixing plant crushed aggregates (the straw crushed aggregates, bagasse and wood residues) and a reinforcing agent, spraying the special adhesive for the plant straw ecological board into the mixture, and manufacturing the board through a hot pressing process or a cold pressing process. The plant straw ecological board and the preparation method thereof provided by the invention have the beneficial effects that the preparation method is simple, the cost is relatively low, the plant straw ecological board is very suitable for industrial production, and the obtained plant straw ecological board is high in bonding strength, good in toughness, resistant to water soaking, good in nail-holding power, waterproof, mildew-proof, mothproof, stable in quality, free of formaldehyde and other toxic and harmful volatile matters, ultralow in VOC, green, environment-friendly and safe to use.
Owner:安徽纳微技术研发中心有限公司

High-speed data acquiring and digital signal processing board based on FPGA (Field Programmable Gate Array)

The invention discloses a high-speed data acquiring and digital signal processing board based on an FPGA (Field Programmable Gate Array), which is characterized by being integrally provided with an analog signal input and A / D (Analog-to-Digital) conversion module, a digital signal processing module and a communication module, wherein the analog signal input and A / D conversion module comprises a signal conditioning circuit and an A / D conversion module; the digital signal processing module comprises an FPGA module, a storage DDR2 and a data storage FLASH; the digital signal processing module is used for processing original sampling data through the steps of fault starting judgment, fault data shift out and wavelet transform processing; an embedded network is realized by the FPGA module; the communication module is connected with the FPGA module; and a networked physics layer chip is cooperated with an FPGA embedded network to realize the purposes of exchanging, collecting and calculating results with other plates or a background computer. According to the high-speed data acquiring and digital signal processing board, high-frequency transient state traveling wave can be synchronously collected and quickly processed.
Owner:ANHUI NANRUI JIYUAN POWER GRID TECH CO LTD +1

A test method using an oil-water distribution tester

The invention provides an oil-water distribution tester and an oil-water distribution test method. The tester comprises a sonic system, a main machine consisting of an electronic circuit and a battery, wherein the sonic system, the main machine and the battery are in thread connection with one another and respectively provided with a centering guide so as to guarantee the concentricity of the tester and a shaft. The storage-type amplitude log is carried out by adopting a double-transmission and four-receiving way, the distribution of oil and water in a horizontal section is determined through the micro sound difference, the periodic injection-production effect of a thermal-recovery horizontal well can be analyzed collectively by utilizing the micro sound difference method, the micro-temperature-difference water finding method and a temperature pressure sectional curve of the horizontal section, when the cementing quality is detected, the distribution situation of the oil and water can be judged by detecting the tiny time difference through the difference of the spreading speed of sound wave in different media such as oil, formation water and injected water, the tiny difference of the medium temperature can be detected through a micro-temperature-difference instrument, the location and source of the water can be collectively determined by combining the tiny temperature difference and micro sound difference, so that the reliability of the logging data can be greatly improved, and the measurement precision of the instrument is higher.
Owner:PANJIN LIAOHE OILFIELD YULONG RUIDA PETROLEUM TECH CO LTD
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