Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

4861results about How to "Solve processing problems" patented technology

Method for evaluating reliability of relaying protection systems under small sample failure data

The invention discloses a method for evaluating the reliability of relaying protection systems under small sample failure data, and belongs to the field of power system relay protection. The problems existing in study of the power system relay protection field at present are solved. The method includes the steps that first, failure samples of the relaying protection systems are integrated; then, a model using Weibull distribution as failure distribution is established by testing the fit goodness, a Monte Carlo method is used for sampling to expand data samples, the data samples and small sample original data are used as priori information together, and a Bayes-Monte Carlo evaluation model is established; finally, reliability evaluation is conducted on each relaying protection system by combining the Bayes-Monte Carlo evaluation model. By the adoption of the method, the limitations that the number of needed samples is large, and the accuracy of reliability parameters is low in practical application in a traditional reliability evaluation method based on large failure samples are eliminated, and reliability evaluation of the relaying protection systems under small sample failure data is effectively achieved.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)

Chinese medicine residue organic fertilizer and production method thereof

The invention provides a Chinese medicine residue organic fertilizer. Wastes after extraction of Chinese traditional medicines can be fully utilized, utilization of waste materials is realized, and a bactericidal and insect disease preventing organic fertilizer full of nutritional ingredients is also provided for agricultural production. The Chinese medicine residue organic fertilizer is prepared by fermenting Chinese medicine residue, excrement of animals, solid waste, bacillus subtilis and EM. The Chinese medicine residue organic fertilizer has the advantages that the Chinese medicine residue, excrement of animals and solid waste are mixed, biological fermentation bacteria are added for carrying out rapid fermentation, organic fertilizer is processed, waste materials are changed into things of value, harm is turned into good, the problem of treatment of abandoned herb residue produced by a Chinese medicine factory is solved, and waste treatment cost is also greatly reduced, so that a win-win situation of environmental protection and economic development is realized. By adopting the organic fertilizer made from the Chinese medicine residue, soil can be effectively improved, crop pest also can be effectively prevented, and quality, yield and safety of crops are improved.
Owner:INST OF S&T INFORMATION SHANDONG ACADEMY OFAGRI SCI

Construction method of shallow buried underground excavating tunnel super large section using PBA method

ActiveCN101225742ASolve comprehensive technical problemsSolve processing problemsUnderground chambersTunnel liningShotcreteTerrain
The invention relates to a method of shallow embedment and concealed excavation based on the PBA method for construction on super large cross-section of tunnel, comprising the following steps: 1. to detect the geologic cavity over the wide span tunnel structure; 2. to arrange the ground dewatering well and the tunnel horizontal well; 3. to take the horizontal channels of vertical well as the front large pipe shed on the arch part of the main body and to inject for strengthening the terrain formation; 4. to carry out the supporting arch construction on the side span of small pilot tunnel and the supporting major arch construction on the main body; 5. to excavate the soil mass of lower cross section as the extended foundation and the central partition wall; 6. to remove the bottom central partition wall section by section, construct bottom underlayer and waterproof layer, pour the reinforced concrete; 7. to remove the central partition wall of the upper part section by section and temporary steel shotcrete in the small pilot tunnel, construct the waterproof layer and concrete of the side wall and the main arch. The method of shallow embedment and concealed excavation based on the PBA method for construction on super large cross-section of tunnel has the advantages of guaranteeing the safety, quality and time limit of the construction, saving cost and enhancing work efficiency.
Owner:CHINA RAILWAY 18TH BUREAU GRP CO LTD

Carbon nano-tube enhanced cement-base composite material and preparation method thereof

InactiveCN101239800AResolve aggregationSolve the problem of tanglesSolid waste managementCarbon nanotubeMetal fibers
The present invention provides a carbon nano-tube reinforcing cement-based composite material and the preparing method thereof, which relates to an inorganic non-metal fiber-reinforced cement-based composite material and the preparing method thereof. The invention settles the problem that the carbon nano-tube is hard to uniformly dispersed in the cement substrate, and the carbon nano-tube reinforcing cement-based composite material of the invention is mainly composed of carbon nano-tube, dispersing agent, thickening stabilizing agent, cement blending material, superplasticiser, antifoaming agent and cement; the method of the invention comprises the following steps: slowly injecting the continuous phase mixed liquid of the thickening stabilizing agent into the carbon nano-tube disperse phase mixed liquid; adding the cement mixing material, mixing to uniform, heating and ultrasonic agitating, then vacuum discharging the bubble; then adding into the mixed liquid of the superplasticiser and the water for mixing to uniform, further eliminating the bubble with the antifoam agent; at last adding cement for mixing to uniform, adding the slurry into the oil mould and jolt ramming for molding; mode removing and standard maintaining to the prescribed lifetime. The carbon nano-tube in the product prepared by the method of the invention is uniformly dispersed in the cement substrate. The mechanical property and conductivity of the product is increased for several times.
Owner:HARBIN INST OF TECH

Picosecond pulse laser cutting preparation method for grid-control traveling wave tube grid mesh

The invention discloses a picosecond pulse laser cutting preparation method for a grid-control traveling wave tube grid mesh. The method comprises the following steps of performing cleaning, hydrogen burning and annealing on a grid mesh material, then pressing the grid mesh material through a die on a punching machine to form a spherical grid mesh blank with high curvature radius precision, performing destressing hydrogen burning on the blank to eliminate stress during processing to guarantee the stability of the curvature radius of a spherical cap of a grid mesh, and finally cutting the grid mesh by adopting picosecond pulse laser of an optimized technology to prepare the grid-control traveling wave tube grid mesh with high size precision and high consistency. According to the preparation method for the grid mesh of a grid-control traveling wave tube, specific technical parameters of picosecond laser cutting are screened through a large number of experiments, the operability is high, the technical design is reasonable, and the application range is large; the prepared grid mesh is high in size precision, high in consistency, high in yield and high in reliability and has an important application value; the shortcoming of an existing electric spark grid mesh processing technology can be effectively overcome.
Owner:NANJING SANLE GROUP

Multi-head numerical control drilling machine

The invention discloses a multi-head numerical control drilling machine, which comprises a base, a tool changing mechanism, a drill bit mechanism and a feeding mechanism, wherein the base is provided with a workbench, an upright post is fixedly arranged on the base, and the top of the upright post is provided with the tool changing mechanism; a supporting frame is fixedly arranged on the base; the drill bit mechanism is arranged on the supporting frame, the drill bit mechanism is connected with the feeding mechanism, and the feeding mechanism drives a main shaft sleeve of the drill bit mechanism to move along the vertical direction so that a pneumatic clamp arranged on the main shaft sleeve can move along the vertical direction; and the control ends of the tool changing mechanism, the drill bit mechanism and the feeding mechanism are connected with the signal output end of a numerical control system. The tool changing mechanism, the drill bit mechanism and the feeding mechanism are mutually independent, so the drilling machine has clear and compact structure and is easy to maintain; and the mechanisms are controlled uniformly by the numerical control system so as to increase the operation flexibility, improve the production efficiency and reduce the cost. The drilling machine can be widely applied in the machining field.
Owner:林颖

Vehicle and vehicle hill starting control method and hill starting control apparatus

The invention discloses a vehicle and a vehicle hill starting control method and a hill starting control apparatus, wherein the method comprises: acquiring vehicle speed, an accelerator opening degree, engine rotation speed, clutch shaft speed, road slope and clutch output torque; calculating vehicle acceleration torque and vehicle resistance torque based on the clutch output torque, the road slope and the clutch shaft speed; calculating the target vehicle speed based on the road slope and the accelerator opening degree; calculating the target acceleration torque of a vehicle based on the difference value between the calculated target vehicle speed and the vehicle speed, the road slope and the accelerator opening degree; calculating the torque that an engine needs and the clutch target torque based on the target acceleration torque of the vehicle, the vehicle resistance torque and the engine rotation speed; and controlling the engine output torque to reach the torque that the engine needs and the clutch output torque reach the clutch target acceleration torque so as to make the vehicle speed reach the target vehicle speed and the vehicle acceleration torque reach the target acceleration torque of the vehicle, thus controlling the vehicle speed and the vehicle acceleration speed and rapidly realizing the intention of a driver.
Owner:BYD CO LTD

Underwater multi-beam sounding system and method

InactiveCN101852854ASolve processing problemsCombating Frequency Selective FadingAcoustic wave reradiationEnvironmental noiseBeam angle
The invention discloses an underwater multi-beam sounding system and a detecting method thereof. The system comprises a microcomputer control system, and a sound wave emission system and a sound wave receiving and detecting system which are connected with the microcomputer control system. The sound wave emission system is provided with a plurality of single emission units, and each single emission unit comprises a plurality of transmitting transducers with different resonance frequencies. The invention also relates to an underwater multi-beam sounding method according to the system. Through two unique modes of 'frequency sweeping and frequency selecting' and 'frequency hopping and sounding', the sounding range resolution is improved by reducing the frequency hopping residence time, the sounding range is increased by increasing the frequency point number of the frequency hopping, and the problem of the contradiction between the range resolution and the sounding range in the single-frequency pulse sounding. The sounding system and the underwater multi-beam sounding method can effectively resist underwater acoustic channel frequency selectivity fading and complex environmental noise, can accurately estimate the first echo reaching time under each wave beam angle, and improve the underwater multi-beam sounding accuracy.
Owner:SOUTH CHINA UNIV OF TECH

Heavy metal-contaminated soil solidifying agent and application method thereof

The invention discloses a heavy metal-contaminated soil solidifying agent and an application method thereof. The solidifying agent comprises the following components by mass: on the basis of the dry weight of heavy metal-contaminated soil, 10 to 15% of a binding material, 5% of biochar, 10% of vegetable fiber and 1% of a stabilizing agent. The components are added according a sequence of the stabilizing agent-the biochar-the vegetable fiber-the binding material. Addition of the chemical stabilizing agent and the biochar in the process of stabilization enables heavy metals to be absorbed and passivated and to lose mobility; preparation of heavy metal-contaminated soil slurry provides conditions for a later chemical reaction; the whole processing process is free of dust pollution and discharging of unwanted sewage. Addition of the vegetable fiber enables cracking of heavy metal-contaminated soil solidified by using a conventional solidifying agent to be effectively prevented and endurance of a solidified body to be improved. The method provided by the invention has the advantages of strong operability, low cost, extensive applicability, a high resource utilization rate, low environmental risk and easy large-scale popularization.
Owner:INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI

Oil seal spring full-automatic sorting system and method based on image detection method

The invention belongs to the image test technology and image processing technical field and relates to an oil seal spring full-automatic sorting system. The system comprises a glass turntable, a collecting and processing component and a sorting component, wherein the collecting and processing component contains a camera with a zoom lens, an LED backlight and a computer; the camera is used to collect the image of an oil seal spring to be detected in a collection area and send the image to the computer; the computer processes and analyzes the collected image of the oil seal spring to obtain the characteristic quantity data and detect judgment of the spring, generate a product sorting signal according to the characteristic quantity data and the detect judgment, and send the sorting signal to the PLC controller; the sorting component comprises the PLC controller, a sub-quality product picking mechanism, a sub-quality product container and the like; and the picking mechanism picks the sub-quality products in a picking area under the control of the PLC controller. The invention also provides a sorting method using the sorting system. The system and method of the invention are simple and efficient, thus the characteristic detection and defect evaluation of the oil seal spring are easy to realize.
Owner:TIANJIN UNIV

Method and apparatus for treating and recycling carbonized wastewater

The invention relates to a coking waste water treatment reuse method and a device thereof. The method comprises the following process steps: 1. strengthening pretreatment; 2. biological treatment; and 3. reuse water treatment. The structure of the method is as follows: electrochemical equipment at the strengthening pretreatment step is connected with a water outlet of an air float and a water inlet of biological treatment; and a water outlet pipe of an MBR water outlet tank at the biological and sludge treatment step is connected in serial with an ozone contact tower, an active carbon filter tower and an RO at the reuse water treatment step. The method has the advantages of providing a novel combination process for the coking waste water, effectively combining the technologies of de-oiling, biochemistry, electrochemistry and membrane, improving the biodegradability of difficultly degraded pollutants by utilizing the electrochemical strengthening pretreatment, strengthening the biochemical treatment by MBR, reasonably designing the reuse treatment of ozone-active carbon-RO, solving the problem of the difficult treatment of coking waste water and achieving the aim of the reuse of the coking waste water.
Owner:上海缘脉环境科技有限公司

A single-ended traveling wave fault location method for transmission lines

The invention relates to a single-end fault ranging method based on initial reversed-polarity directional traveling wave detection, which can effectively realize single-end traveling wave fault ranging and has high reliability and high accuracy. The method comprises the following steps: (1) when a traveling wave fault ranging device is started, testing the arriving time t1 of the line modular component of the initial traveling wave of a fault, and extracting traveling wave signals in the time interval [0, 2L/v], wherein L indicates the length of the line, and v indicates the wave speed of theline module component; (2) testing the initial reversed-polarity directional traveling wave in the time interval, calculating the difference of the arriving time of the line modular component of the initial reversed-polarity directional traveling wave and the arriving time of the line modular component of the initial traveling wave of the fault, determining whether the fault is a nearby fault or a remote fault with reference to Curve Chart 3, and accordingly determining the section with the fault point; (3) judging the properties of the second arriving wave head through the determined fault section; and (4) determining final ranging results through the initial traveling wave and the wave head of the second traveling wave of the fault.
Owner:SHANDONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products