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44results about How to "Little environmental dependence" patented technology

Robot inspection system and inspection method for cold region transformer substation

InactiveCN105446336AMake up for the problem of local signal instabilityPrecise positioningPosition/course control in two dimensionsTransformerControl signal
The invention relates to a robot inspection system and inspection method for a cold region transformer substation, and belongs to the robot inspection field for a transformer substation. The robot inspection system and inspection method for a cold region transformer substation solve the problem that an existing manual inspection mode for a transformer substation is low in efficiency and bad in the detection quality. The robot inspection system for a cold region transformer substation comprises a main control system, a motion control system, a sensing detection system, a wireless communication system and a failure warning system, wherein the main control system is used for task scheduling of an inspection robot, and is also used for receiving an environment perception signal, orientation data, temperature data, environmental images and pointer instrument images, and sends a motion control signal according to the environment perception signal and the orientation data; by means of comparison between the collected temperature data and a set temperature threshold, when the collected temperature data exceeds the set temperature threshold, an warning control signal is transmitted; the images in a failure type model base are matched with the received environmental images; and if the matching is successful, the instrument data of the transformer substation can be read according to the received pointer instrument images. The robot inspection system and inspection method for a cold region transformer substation are used for inspection of a transformer substation.
Owner:HARBIN INST OF TECH

Wing folding and unfolding mechanism for cylindrical launching unmanned aerial vehicle

The invention discloses a wing folding and unfolding mechanism for a cylindrical launching unmanned aerial vehicle. A torsion spring serves as wing surface expanding power, the mechanism is simple andreliable, and dependence on the environment is small; a bevel gear serves as a synchronous mechanism for the wing surface expanding process, the mechanism is simple and small in size, a wing surfacecan be unfolded completely and synchronously, and the flight reliability of the unmanned aerial vehicle is improved; a locking pin serves as a locking mechanism after the wing surface is expanded, thestructure is simple and small in size, reliability is good, a locking pin cap is designed, thus it is ensured that a wing can be rapidly folded after the unmanned aerial vehicle is retracted, and retracting of the unmanned aerial vehicle is competed; different balls serve as the contact form between motion interfaces, the friction resistance of the opening process is reduced, and rapidity of theopening process is ensured; and the overall folding mechanism is high in integration degree, simple, small in size, easy to assemble, and easy and convenient to operate, and the demands of the cylindrical launching unmanned aerial vehicle for wing folding are met.
Owner:GENERAL ENG RES INST CHINA ACAD OF ENG PHYSICS

Developing roller and imaging device

The invention provides a developing roller. The developing roller comprises a metal central spindle, and a conductive elastomer covering the metal central spindle, wherein a conductive agent in the conductive elastomer is a mixture containing tetrabutylammonium perchlorate and polyethyleneglycol with an amount being 5% to 50% of weight parts of the conductive elastomer, wherein the ratio of the tetrabutylammonium perchlorate to polyethyleneglycol is equal to 2:8 to 6:4. The invention also provides an imaging device including the developing roller. The developing roller provided by the invention has uniform electric property, can adjust the electric property to obtain uniform resistance, and can ensure that the resistance of the developing roller has low environmental dependency and low voltage dependency, i.e. excellent environmental stability and voltage stability, without increasing hardness of the elastomer. Additionally, the developing roller can prevent the conductive agent from being separated out, and a photosensitive drum is not contaminated, thereby effectively obviating printing defects, such as nonuniform printed images. An imaging apparatus using the developing roller has the advantages of uniform density of printed images, high image quality and high quality.
Owner:GUANGDONG LEPUTAI NEW MATERIAL TECH

Satellite navigation regenerative deception generation method based on correlation peak dynamic dragging

InactiveCN113031019AHigh success rate of deceptionHigh deception efficiencySatellite radio beaconingTelecommunicationsTransmitted power
The invention provides a satellite navigation regenerative deception generation method based on correlation peak dynamic dragging, and belongs to the field of satellite navigation. According to the method, on the basis of traditional regenerative deception simulation, complete coherence of deception interference with real signals in technical indexes such as signal power, signal Doppler, arrival time delay and the like is achieved by receiving space real signals, a traditional anti-deception method cannot recognize the technical indexes, and the deception success rate is high; in the whole regenerative deception generation process, a navigation receiver is switched to a deception signal in a non-inductive mode through a correlation peak dragging mode from a space real signal, the deception belongs to dexterous deception, and the deception efficiency is high; the deception method does not need additional environment support and external auxiliary information, and deception is realized only in a smart control mode on deception interference generation; and the method is low in transmitting power, high in concealment, simple in engineering implementation and wide in application range, and has good popularization and application values.
Owner:NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP

High-precision and wide-range acceleration sensor with switchable detection modes and control method thereof

The invention provides a high-precision and wide-range acceleration sensor with switchable detection modes and a control method thereof, an accelerometer working plane layer comprises a sensitive mass block and three resonators, the resonators at two sides comprise an inertia force amplification lever structure and a group of differential comb tooth driving detection structures, and equal-interval plate capacitors provide electrostatic force between adjacent resonators to form electrostatic coupling. When the acceleration is small, the circuit controls the three resonators to be at different potentials, so that electrostatic coupling is generated among the three resonators to form a modal localization detection mode, the acceleration is detected through an amplitude ratio, and when the acceleration exceeds a preset critical value, the circuit controls to cancel the potential of the middle resonator, so that the resonators are not mutually coupled any more and are in an independent resonance state, that is, a mode localization mode is switched into a vibration beam mode, and the acceleration is detected through differential resonance frequency. According to the invention, a high-precision accelerometer with a wide range, high sensitivity and a large dynamic measurement range can be realized.
Owner:NANJING UNIV OF SCI & TECH

Efficient self-healing agent for ultrahigh-temperature oil well cement based on crack response and application threof

The invention discloses an efficient self-healing agent for ultrahigh-temperature oil well cement based on crack response and application thereof. The self-healing agent comprises microencapsulated epoxy resin and a curing agent. The microencapsulated epoxy resin is prepared by the following method: adding epoxy resin and a diluent into distilled water under stirring and stirring; and adding an emulsifier and a surfactant, stirring to obtain an emulsion, putting styrene and divinyl benzene into the emulsion in the presence of nitrogen, uniformly mixing, heating, adding benzoyl peroxide, heating and reacting to obtain the microencapsulated epoxy resin. The self-healing agent realizes self-healing of the oil well cement in an ultrahigh-temperature environment. The self-healing agent is low in dependence on the external environment, and cracks can be repaired in time when oil, gas and water channeling does not occur, internal tiny cracks can be repaired in time and the cracks can be restrained in the initial stage. The self-healing agent has little influence on the mechanical properties of a cement matrix and can improve the mechanical properties of cement after repair without causingmechanical defects or adverse effects on other cement admixtures.
Owner:TIANJIN UNIV

Method and equipment for intelligent detection of happiness based on text information

The invention discloses a method and equipment for intelligent detection of happiness based on text information. The method comprises the following steps of carrying out word segmentation processing on the text information, and obtaining at least one segmented word; according to the at least one segmented word, determining all sentiment words contained in the at least one segmented word from a sentiment word base, wherein the sentiment word base is stored with the sentiment words and the component values of the sentiment words on each basic sentiment dimension; determining the word frequency of each sentiment word in the text information; obtaining the component value of each sentiment word on each basic sentiment dimension from the sentiment word base; according to the word frequency of each sentiment word in the text information, the component value of each sentiment word on each basic sentiment dimension, and the weight of each basic sentiment in the happiness, determining the happiness value of the test information. The method and the equipment solve the problem that the happiness of a tested person in the past is difficultly detected and compared due to the reasons of memory, self perception, etc. of the tested person.
Owner:BEIJING UNIV OF POSTS & TELECOMM

Large scale ship booster supporting compartment manufacture and installation method

The invention relates to a method for manufacturing and installing a large-scale ship lift for a hydropower station dam. According to the structure of the ship and the characteristics of the ship room and transportation requirements, the ship is divided into two parts by means of floating transportation on water. The floating unit of the nut column beam, the overall floating unit of the main longitudinal beam of the ship-holding box, and the intercalation unit of the bottom plate; the units are built in the factory as a whole, and they are floated to the dam; the above-mentioned units are floated to the ship room, By adjusting the water depth of the ship's compartment, turning over, dropping the pier and positioning it accurately, it is assembled and welded to form; the main longitudinal beam, bottom plate structure and nut column beam of the entire ship's bearing compartment are connected into one. The present invention adopts the whole or large-piece floating transportation method, so that the super-large component ship lift can be built and formed in the factory according to the division of units, and can be installed after being transported to the construction site, which not only makes the ship lift It has high manufacturing precision and good molding quality, which greatly improves the construction efficiency of super-large projects, and at the same time greatly reduces transportation costs.
Owner:WUCHANG SHIPBUILDING IND

A Polar Coordinate Grid Search Method and System for Partial Discharge Source Location

The present invention provides a polar coordinate grid search method and system for partial discharge source location. The method comprises the steps of: employing a system of polar coordinates to divide a search space into fan-shaped grids with radiuses of r, angles of [Theta] and quantities of nr; calculating a feature value array (A1, A2, ...An); and searching the minimum value Am in the feature value array, wherein the grid where the minimum value Am is located is a grid where a partial discharge point is located. It is determined whether the size of the grid where the minimum value Am islocated meets a precision demand or not, if yes, the grid where the minimum value Am is located is taken as the final solution, and if not, the grid where the minimum value Am is located is taken as anext space to be searched for grid division again. The present invention provides a method for accurate location of the partial discharge source on the angle through adoption of ultrahigh frequency time delay signals, the method is small in algorithm calculated amount and excellent in time performance, and has great improvement compared a current algorithm, and is simple and practicable, low in dependence on an external device environment and high in detection accuracy.
Owner:GUANGDONG POWER GRID CO LTD DONGGUAN POWER SUPPLY BUREAU +1
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