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313 results about "Research process" patented technology

Electric arc test method and apparatus for contact head disjunction of switch apparatus

The invention aims to provide a disjunction electric arc testing method for a switching electric appliance contact for providing effective guarantee for electric arc theoretical studies with even performance figures, high testing efficiency and reliable testing result, and a device thereof. The device consists of a mechanical system and a circuit system, which are connected. The disjunction electric arc testing method for the switching electric appliance contact and the device thereof comprise relay electric arc testing and simulated electric arc testing. The method and the device solve the problem that theoretical analysis or computed result is difficult to verify during the electric arc theoretical studies. The invention provides a relay electric arc testing method and a simulated relay electric arc testing method. The method and the device meet requirement for various testing conditions during electric arc testing, and solve the problems of low testing efficiency and poor confidence level of the testing result. For deep comprehending the arcing mechanism and analyzing the property of the electric arc, the invention further provide a method for quickly extinguishing arc to provide effective support for improving the performance and the reliability of a relay.
Owner:HARBIN INST OF TECH

Method for improving electrical resistivity evenness of P-type silicon epitaxial wafer for CCD

The invention relates to a method for improving the electrical resistivity evenness of a P-type silicon epitaxial wafer for a CCD. The method includes the steps that an intrinsic layer is prepared before a needed epitaxial layer grows, so that impurities on the edges of the surface and the back face of a substrate and impurities in a furnace cavity of an epitaxial furnace are isolated from volatilizing and escaping to the needed epitaxial layer; meanwhile, the harmful impurities adsorbed to the surface is resolved by increasing temperature, the impurities in a reaction furnace cavity are removed out through continuously-changed air flow, a passive doping source is effectively restrained, then the needed parameter epitaxial layer grows, and therefore the epitaxial layer with the high electrical resistivity evenness is acquired. According to the method, the substrate covered silicon technology, the two-step epitaxial growth technology and the temperature and flow change blowing technology are organically combined, parameters of the prepared silicon epitaxial wafer can meet the requirements of a substrate material of the large-area-array and high-integration-density CCD, the electrical resistivity evenness of the epitaxial wafer can be higher than 99%, and the research process of the high-performance CCD is greatly promoted.
Owner:CHINA ELECTRONICS TECH GRP NO 46 RES INST

Rodent oronasal suction dynamic exposing device

The invention relates to a rodent oronasal suction dynamic exposing device, which is characterized in that the rodent oronasal suction dynamic exposing device comprises at least one section of combinable exposing chamber, wherein the exposing chamber comprises an outer tube and an inner tube positioned in the outer rube, a plurality of aerosol sampling pipes and a plurality of animal tube insertion nozzles are arranged on the tube wall of the outer tube, animal tubes are correspondingly inserted and arranged on the animal tube insertion nozzles, an aerosol suction pipe is respectively penetrated into each animal tube insertion nozzle, a top cover of the exposing chamber is arranged on the top of the highest section of the exposing chamber, the middle of the top cover is provided with a mixed aerosol air inlet, an aerosol air inlet pipe is connected above the air inlet, the air inlet end of the air inlet pipe is connected with an aerosol generator, the outer tube and the inner tube of the lowest section of the exposing chamber are respectively and correspondingly positioned on an outer tube base and an inner tube base, at least one circle of vent holes are arranged on the inner tube base arranged between the outer tube and the inner tube of the exposing chamber, an aerosol air outlet is arranged in the middle of the outer tube base, the air outlet is connected with an aerosol air outlet pipe, and the outlet end of the air outlet pipe is connected with an air pump. The invention has the advantages of ingenious structural design and convenient operation, and can be widely used in the animal suction test research process.
Owner:MICROBE EPIDEMIC DISEASE INST OF PLA MILITARY MEDICAL ACAD OF SCI

Method for zigbee indoor location networking design and corresponding simplification

A method for zigbee indoor location networking design and corresponding simplification belongs to the field of network of things. The method includes determining an area with side length being 6.5-7.5 in actual application to be optimum networking space, selecting common isosceles triangle or equilateral triangle to conduct networking and obtaining a value parameter A by offset estimation. The method simplifies a research process and is favorable for raising a corresponding research model. Effective location data can be obtained under a networking plan by value relation only related to a parameter n obtained by reduction by means of the proportional relation of three points and a coordinate value. The method enables a location process to be free of interference of the parameter A and the parameter n and only needs to obtain relative function relation with the parameter n after parameter elimination and known reference point coordinate under the corresponding relation. Therefore, corresponding coordinate is calculated, and the location aim can be achieved. By means of the method, networking density and the networking plan are scientifically designed. The method provides an analysis base for proceeding of a scientific experiment and application cost.
Owner:BEIJING UNIV OF TECH

Low-temperature physical property measuring device of solid material

The invention relates to a low-temperature physical property measuring device of a solid material, which is used for measuring specific heat, alternating current and direct current resistivity, a heat conduction coefficient and a thermoelectric potential rate of a solid material at low temperature. The physical property measuring device comprises a sample carrying part and a refrigerating part, wherein the refrigerating part comprises a Dewar flask, a Dewar sleeve, a Dewar cover, a low-temperature chamber, a vacuum extracting module and an air leakage preventing module; the Dewar flask is arranged in the Dewar sleeve; the Dewar sleeve and the Dewar cover are fastened in a flange structure; the middle of the Dewar cover is provided with a hole in which the low-temperature chamber is inserted; and the middle of the low-temperature chamber is sleeved with a blocking sleeve for fixing the low-temperature chamber. The jointing position of a sample rod and the low-temperature chamber has a flange structure, and the air leakage preventing module and the vacuum extracting module are clamped between the sample rod and the low-temperature chamber from bottom to top and sealed by an O-shaped ring. An aviation plug is installed on the upper part of the sample rod, and an internal lead is connected to the aviation plug along a rod body of the sample rod. The invention has the advantages of less liquid nitrogen consumption, no indium wire consumption, short thermal relaxation time, stable low-temperature environment, relatively simple structure, low cost, and the like and can be applied to the physical property measurement of various solid materials in the teaching and researching process.
Owner:SOUTHEAST UNIV

RFID intelligent sensing recognition technology-based consumer preference survey and analysis system

InactiveCN105590229ASave research costsThe research results are true and credibleCo-operative working arrangementsMarketingWireless transmissionSurvey result
The invention provides an RFID intelligent sensing recognition technology-based consumer preference survey and analysis system. The system of the invention includes an intelligent label which is attached to a commodity for sale, an intelligent object state identification terminal which can wirelessly acquire related information of the intelligent label, a base station with a wireless receiving module, and a computer for a user to acquire and analyze data; the intelligent label includes an MEMS sensor which acquires the acceleration information of the object, a main control and detection unit and a wireless transmission module; the intelligent object state identification terminal formats data acquired from the label, packages the data and uploads the packaged data to the base station with the wireless receiving module; the base station transmits the data to the computer through a USB communication mode; and an analysis module is arranged in the computer. With the system of the invention adopted, information such as the preferences of consumers, the number of people who are interested in the object, and the effective attention degree of the object can be accurately obtained; and a survey and research process is basically completed by equipment, and the acquisition of survey results can be more quick and accurate.
Owner:HANGZHOU CENTURY CO LTD

Manufacturing method capable of improving mechanical performance of thick 7050-T7451 aluminum alloy plate

ActiveCN104985393AAdjustable solid solutionImprove completenessHeat-affected zoneHardness
The invention provides a manufacturing method capable of improving mechanical performance of a thick 7050-T7451 aluminum alloy plate, and belongs to the technical field of metallurgy. The manufacturing method comprises the following technological steps that (1) thermal treatment is conducted; (2) quenching and straightening are conducted; (3) stir friction machining is conducted on the obverse side; and (4) stir friction machining is conducted on the reverse side, so that the thick 7050 aluminum alloy plate with the uniform microstructure and obviously refined crystal grains is obtained. The manufacturing method is a machining mode with the minimum hardness span formed after stir friction machining in the research process at present. Compared with a conventional manufacturing method, the manufacturing method has the advantage that a heat affected zone and a thermo mechanical affected zone of the plate are removed. Compared with a double-side stir friction machining method newly developed in the recent period, the manufacturing method has the advantages that the difference between precipitated phases of an obverse side stir zone and a reverse side stir zone is remarkably reduced, the harness value is remarkably increased, and the span is smaller than or equal to 10 HV. In addition, the hardness of the thick aluminum alloy plate manufactured through the manufacturing method ranges from 130.1 HV to 152.9 HV, the tensile strength of the thick aluminum alloy plate ranges from 466 MPa to 503 MPa, and the elongation of the thick aluminum alloy plate ranges from 30.6% to 31.2%.
Owner:NORTHEASTERN UNIV

Method for evaluating carbon emission in asphalt surface course construction

ActiveCN107122591AThe evaluation content is comprehensiveIntuitively reflect the emission situationTechnology managementInformaticsHigh carbonMechanical equipment
The invention discloses a method for evaluating carbon emission in asphalt surface course construction. According to the method, the carbon emission in the asphalt surface course construction is divided into 8 units of site stockpiling, aggregate loading, aggregate heating, asphalt heating, asphalt mixture mixing, transportation, paving and grinding according to different unit processes of the asphalt surface course construction, and a carbon emission source is defined into energy consumption carbon emission generated by using of mechanical equipment and a transport cart, and carbon emission of asphalt and asphalt mixtures under a high-temperature state. According to the method, corresponding asphalt surface course construction carbon emission calculation formulas are established according to different construction units and carbon sources under the historical background of energy conservation and emission reduction as well as low carbon and environment protection, the carbon emission loads are graded, and an asphalt surface course carbon emission evaluation method is established on above basis, so that a research direction is indicated for the change, from a high carbon emission mode to a low carbon emission mode, of the later asphalt surface course construction process, and great significance is brought to remit the greenhouse effect and propel the research process of low-carbon type roads.
Owner:CHANGAN UNIV

Pressure-reduction, alkali-addition and ammonia-distillation system

The invention discloses a pressure-reduction, alkali-addition and ammonia-distillation system. The system comprises a residual ammonia water tank, an ammonia distillation tower, a finished product ammonia water tank and a vacuum pumping system; by the improvements of using a metering pump to simultaneously adding an alkali liquor in an alkali liquor tank into pipes arranged at the front end and the back end of the residual ammonia water tank, and connecting the residual ammonia water tank and the vacuum pumping system with a tail gas recycling device, the use conditions of negative pressure ammonia distillation process are prepared. According to the pressure-reduction, alkali-addition and ammonia-distillation system, only an alkali-addition position needs to be adjusted without changing former ammonia distillation process and devices, the quality of ammonia distillation waste water can satisfy the demand of next process, so that the process is simple and the investment is low; the switch of pressure-reduction ammonia-distillation and normal pressure ammonia-distillation is not affected; the pressure-reduction ammonia-distillation process is improved; and the industrial process of the pressure-reduction ammonia-distillation is promoted. With the simplest process changes and lowest investment, the pressure-reduction, alkali-addition and ammonia-distillation system improves the quality of the ammonia distillation waste water, promotes the research process of the pressure-reduction ammonia-distillation, and is in favor of promoting the popularization and application of the pressure-reduction ammonia-distillation process.
Owner:JIGANG GRP

Decision-making modeling method for relay protection on-line condition based maintenance of power system

InactiveCN102567800AFeatures that support dynamic upgradesTo achieve the characteristics of dynamic upgradeData processing applicationsElectric power systemInformation model
The invention discloses a decision-making modeling method for relay protection on-line condition based maintenance of a power system, and belongs to the invention in the aspect of a platform independent information model (PIM). The decision-making modeling method is mainly applied to relay protection condition evaluation and an auxiliary decision making process. According to the decision-making modeling method, an acquisition and storage process, a condition evaluation process and the auxiliary decision making process in the relay protection on-line condition based maintenance are modeled, so that the decision-making modeling method adapts to the characteristics closely related to on-line condition quantity and equipment, and the complexity brought by difference of the equipment is shielded for an upper evaluation algorithm to support a universal evaluation algorithm; and according to the decision-making modeling method, a research process of the auxiliary decision making algorithm and an implementation process of a maintenance decision making system can also be separated to meet the characteristic of supporting the dynamic updating of the decision making algorithm.
Owner:STATE GRID ELECTRIC POWER RES INST
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