1821results about How to "Low environmental requirements" patented technology

A robot airplane for tour inspection of power line in counterwise driving structure of coxial double propeller uses two engines to control flight stability, GPS and GIS to confirm flight path, computer processor to adjust flight attitute and battery to provide power for motor, transducer and data link system. Its control system consists of navigation system, autonomous planning system, data link system and on line detection system.

The invention relates to a multiturn absolute rotary encoder based on a rotary transformer, which is characterized in that: a sensor is displaced by taking the rotary transformer as a shaft angle; a shaft angle decoding circuit can be formed by adopting DSP as a core processor; a sine wave which can be controlled by frequency and phase in the method that the circuit is synthesized by direct digital frequency for the numerical control of an oscillator; and the sine wave is directly taken as an excitation rotary transformer signal via a power amplifier and a filter circuit; the rotary transformer signal is transferred to A / D converter after being run through a matching circuit of electronic transformer; after sampling, digital filtering and digital signal processing, the sine and cosine value for the actual angle of two channels is generated; the angle error change is tracked dynamically by the PI algorithm; the mechanical displacement of the rotating object is converted into digital shaft angle position and speed. The multiturn absolute rotary encoder based on a rotary transformer has the advantages of high tracking speed, high conversion accuracy, high reliability, simple structure, sensitive movement, low environmental condition, strong anti-interference capability, high measuring accuracy and speed voltage output.

The invention discloses a multi-person human body posture estimation method, and relates to processing of a recording carrier for identifying graphics. The method is a multi-person human body postureestimation method based on depth features. According to the method, a depth feature human body key point detection model composed of a main body network and a fine tuning network is constructed; a depth feature human body key point detection model is trained by adopting a two-stage training method combining a bottom-up method and a top-down method; finally, the human body key points are detectedby using a depth feature human body key point detection model trained in two stages. Redundant key points which do not belong to a target person are removed through human body key point clustering processing, then a multi-person human body posture estimation result is output, and the defects that in the existing multi-person human body posture estimation method technology, under the condition thatcrowds are dense, the target human body shielding interference robustness is poor, and the human body key point detection accuracy is low are overcome.

The invention discloses a multi-rotor unmanned aerial vehicle self-adaptive landing method and system. When an unmanned aerial vehicle takes off, a ground control station (such as a tablet computer, a cell phone or other control equipment) chooses an approximately proper area for the unmanned aerial vehicle to land in. When the unmanned aerial vehicle receives the order to land, it starts the landing mode and waits the landing action to take place. The landing face of the landing area is then checked to see if it is suitable for the unmanned aerial vehicle to land or not. If it is suitable, the unmanned aerial vehicle begins to land and the landing mode ends; if it is not suitable, the pose of the unmanned aerial vehicle is changed for continued landing. According to the invention, it is possible to realize safe and reliable self-landing of an unmanned aerial vehicle even at a place where the landform is complex.

The invention is a working device arranged in some place, composed of two or above working devices arranged in some place, back-to-back, side-arranged, opposite, staggered, side-by-side, up and down, rotatable, inclinable, turnable, movable, liftable or in other form. And an engineering machine applying it is composed by arranging it in corresponding position on a corresponding vehicle or chassis or connecting it with the correspond position. And it can compose various engineering machines by various vehicles or chassises, compact, multifunctional, low-cost, high-efficiency and energy-saving, and having strong practicality.

The invention discloses a self-localization method for a mobile device in an underground coal mine. The method comprises: performing scanning at a start point through a three-dimensional laser scanner to obtain three-dimensional point cloud data P; making the mobile device start moving, and performing dead reckoning through integration of data measured by an inertial transducer and a mileometer transducer to obtain a real-time position of the device; making the mobile device stop moving at a point not far from the start point, and performing scanning at the stop point to obtain three-dimensional point cloud data P<i+1>; registering P and P<i+1> to obtain displacement and attitude variation between the two points, and updating the position of the stop point; and taking the stop point as a new start point, and repeating the above steps to complete a whole real-time localization process. Accordingly, the invention further provides a localization system corresponding to the method. The system has low environment requirements; high-precision localization can be realized in a severe environment in an underground coal mine; and a three-dimensional visualization module of the whole environment is established.

The invention relates to a metamaterial structure for modulating a terahertz wave, comprising a central medium layer, an upper surface grid layer and a lower surface grid layer. The central medium layer is made of a polyethylene materials transparent to the terahertz wave and has a thickness smaller than the one-tenth wavelength of an incident terahertz wave; the upper surface grid layer adopts metal material and comprises a series of parallel grids periodically distributed on the upper surface of the central medium layer; each grid and gaps at both sides of the grid form a period, and the thickness of each grid is smaller than the width thereof; the lower surface grid layer adopts a metal material and comprises a series of parallel grids periodically distributed on the lower surface of the central medium layer; each grid and gaps at both sides of the grid form a period,, and the thickness of each grid is smaller than the width thereof; and the grids of the upper surface grid layer and the lower surface grid layer are symmetrically distributed in a mirror mode. The invention has the advantage that the modulation range of the terahertz wave is widened by a modulator because the transmission of the terahertz wave is constantly enhanced by a surface plasma wave.

The invention provides a mobile vision robot and a measurement and control method thereof. Positioning and state information of the mobile robot and a robot operating target is obtained through a machine vision detection method, and meanwhile, movement and other operation of the robot are controlled according to information provided by vision images; and the robot vision images are provided by two cameras, one camera is fixed to a mobile platform and used for acquiring images on the robot movement path, and the other camera is fixed to the tail end of a manipulator and used for acquiring detailed images of a manipulator operating target. According to the mobile vision robot and the measurement and control method thereof, the positioning and state information of the mobile robot and the specific target are calculated through an image distortion correcting and mode recognizing method according to the obtained image information, and then the robot is controlled to complete instructed action on a target object. Meanwhile, the invention provides a method for eliminating accumulative errors generated in the operating process of the robot through vision images. The mobile vision robot has the characteristics of high precision and high anti-interference capacity, complex environment support is not needed, and the mobile vision robot is suitable for various laboratories and factory environments.

The invention relates to a flexible capacitive sensor fabricated by employing a silver nanowire flexible electrode. The flexible capacitive sensor comprises an upper-layer flexible electrode plate, alower-layer flexible electrode plate and an intermediate flexible dielectric layer, wherein each flexible electrode comprises a flexible substrate, a silver nanowire electrode thin film layer, and thesilver nanowire electrode thin film layer is arranged in the flexible substrate. A fabrication method of the electrode employs a transfer printing method, the silver nanowire electrode thin film layer is fabricated in an electrode template, a flexible polymer is injected for curing, so that the silver nanowire conductive thin film layer is transferred to the flexible substrate. The flexible dielectric layer is divided into two types comprising a thin film structure and a porous structure, the thin film structure is fabricated by uniformly coating a flexible polymer prepolymer on a silicon wafer to form a thin layer, the porous structure is fabricated by a template method, the flexible polymer prepolymer is uniformly mixed with salt, a film formation structure is fabricated and cured, andthe porous dielectric layer structure is obtained after salt removal. The flexible capacitive sensor is simple in fabrication method and has favorable signal response.

The invention belongs to the technical field of navigation of AGVs (Automated Guided Vehicles), and aims to provide a blended laser navigation method of an AGV, which is applicable to a working environment having a high requirement on terminal locating accuracy and having no fixed running path. The blended laser navigation method comprises the following steps of step one, constructing a two-dimensional map of an environment; step two, planning a navigation path; step three, carrying out AGV path navigation by utilizing a reflector-free laser navigation mode, and enabling the AGV to walk according to the navigation path; step four, entering a reflector laser accurate locating mode when a laser reflector is detected by the AGV, carrying out accurate navigation of the AGV, and completing reserved work of the AGV. According to the blended laser navigation method of the AGV, provided by the invention, AGV material transporting can be reliably, stably, conveniently and flexibly realized in a mode that the accuracy degree meets the requirement, the requirement on the environment of an application place is low, and the applicability is wide. The blended laser navigation method not only can be applied to the field of industrial AGV application, but also can be applied to other application occasions, such as navigation of a service robot.

The embodiment of the invention provides a method for pairing an unmanned aerial vehicle and a remote controller, a server, the remote controller and a system, wherein the system at least comprises the server, the remote controller and the unmanned aerial vehicle, wherein the server is used for judging that the remote controller is bound with the unmanned aerial vehicle in need of being paired, obtaining a pairing parameter corresponding to a pairing request, and returning the pairing parameter to the remote controller; the remote controller is used for generating the pairing request, sending the pairing request to the server, and performing communication configuration of the remote controller according to the pairing parameter; and the unmanned aerial vehicle is used for obtaining the pairing parameter from the server or the remote controller, and performing communication configuration of the unmanned aerial vehicle according to the pairing parameter. By means of the embodiment of the invention, the pairing accuracy rate of the unmanned aerial vehicle and the remote controller can be increased; and environmental requirements in the pairing process can be reduced.

The invention provides a bismuth bronze-steel composite bimetal bearing material and a manufacturing method thereof, and in particular relates to a bismuth bronze-steel composite bimetal bearing material formed by sintering a bismuth bronze alloy on the surface of a carbon steel material and a manufacturing method thereof. The bismuth bronze-steel composite bimetal bearing material has a laminated structure, the base layer is the carbon steel material, the surface is the bismuth bronze alloy, and the bismuth bronze alloy is sintered on the surface of the bismuth bronze alloy material. The method for manufacturing the bismuth bronze-steel composite bimetal bearing material adopts the powder metallurgy sintering method principle to sinter the bismuth bronze alloy on the surface of the bismuth bronze alloy so as to form the bismuth bronze-steel composite bimetal bearing material.

The present invention relates to outer wall paint, and is especially one kind of high performance nanometer outer wall paint and its preparation process. The nanometer outer wall paint has introduced organosilicon and fluoro resin to result in watertight coating with high permeation resistance and breathing function, water-thinned resin, nanometer titania particle, dispersing assistant and other assistants to make the paint possess well dispersed nanometer titania particle and excellent photocatalytic self-cleaning function.

The invention relates to a surface treatment process for stainless steel, in particular to a stainless steel passivation process. The process comprises the following steps of: dipping a stainless steel workpiece in an alkali degreasing solution for 10-30 seconds under a normal temperature condition; washing the workpiece by using water at the normal temperature; acid washing: acid washing the workpiece for 50-60 seconds by using a nitric acid solution at the normal temperature; washing the workpiece by using water at the normal temperature; soaking the workpiece in a passivation solution for 40-50 seconds at the normal temperature, wherein the passivation solution contains nitric acid and sodium dichromate; washing the workpiece by using water at the normal temperature; heating purified water to be higher than 75 DEG C, and putting and soaking the passivated and cleaned workpiece into the purified water for 4-5 seconds; taking out the workpiece and airing. The invention greatly saves the time for passivating the stainless steel workpiece, reduces the production requirements of the workpiece and ensures that the process is more suitable for practical production.

The invention relates to a polarization controlling encoding method, an encoder and a quantum key dispatching system. The invention is characterized in that the interior of the encoder adopts a polarization-maintaining light path or a ninety-degree Faraday rotation reflector reflection to cause output optical pulse polarization state to be the same; the optical pulse output by the sending terminalof the quantum key dispatching system taking the polarization controlling encoder as the core is passed to the receiving terminal thereof by a quantum channel in a uni-directional way; according to the superposition interference results of the optical pulse and distributorship agreement of the quantum key, the quantum key dispatching is realized. The polarization controlling encoder causes the whole system (comprising a sending set, a reception unit and the quantum channel) to have the interference free capability. The outlet of the sending set and the inlet of the receiving set of the systemare added with a reversal photon separation detection unit, thus preventing the invasion of the modulation information and carrying the photon to get off the reception unit of Trojan photon. The quantum key dispatching system can realize unconditional secure assignment of the key.

The invention discloses a power inspection method and a power inspection device based on visible light and infrared image fusion of an unmanned aerial vehicle. Two fixing seats are arranged at the lower end of a fuselage of the unmanned aerial vehicle respectively; a rotating cloud deck is arranged on each fixing seat; the rotating cloud deck can rotate horizontally and vertically; an infrared camera and a visible light camera are arranged on the two cloud decks respectively; during flight of the unmanned aerial vehicle, the infrared camera or / and the visible light camera shoots / shoot a target; by virtue of a thermal radiation principle of an infrared image and a light reflection principle of a visible light image, two acquired images are effectively registered and fused in real time, so that a final result not only maintains the color and the clear detail contour and edge of the visible image, but also maintains brightness information of an infrared object of the infrared image, and thus the infrared target object has highlighted brightness relative to the background and the target is more easily recognized; a shot image is transmitted to a monitor through a wireless transmissionnetwork, and a processed result of the monitor is sent to a display and a personal communication terminal.

The invention discloses an electric vehicle mounted power generation system. A dual-salient pole brushless direct-current power generator is adopted in the electric vehicle mounted power generation system, thus system structure is simplified and system cost is reduced. In the invention, a controller working power supply and an inside excitation source in the dual-salient pole brushless direct-current power generator is used as a power supply of a power generator controller, thus power supply safety of the generator controller is improved. The invention also discloses a control method of the electric vehicle mounted power generation system. By adopting an output current constant-current regulation and voltage-limit combined coordination control policy, power matching and system protection of a power generation system, a power storage battery and a drive system can be realized, system energy consumption is optimized and service life of the power storage battery pack is prolonged.

The invention relates to a centralization remote power feeding system including a primary device machine room arranged with wireless primary devices and power supply primary devices, which include an inverter and a transmission primary device for converting the external electricity 380 V industrial electricity into the -48 to 24 V DC to access to the wireless primary devices to cause the wireless primary devices operate normally; the -48 to 24 V DC is converted to the 220-380V AC through the inverter of the power supply primary devices, then the power is transmitted to the farend unit of the farend covering system of the base station part newly built through the common rod transmission mode of the power transmission line and the optical fiber transmission line, providing the stable power to the farend unit, thereby completing the construction of the whole base station. The invention reduces the building size of the base station, saves the project invest and advances the net operation safety reliability, which is applied in the signal covering of the road, the subway , the tunnel of the city and the small countryside base station.

The invention belongs to the technical field of laser detection, specifically relates to a component analyzer for laser probe micro-area. The structure thereof comprises that: a laser, a beam expanding lens and a first total reflector are sequentially positioned on the same horizontal optical path; an included angle between the reflection plane of the first total reflector and the horizontal optical path is 45 degrees; an industrial CCD is positioned above the first total reflector, the industrial CCD and a first focusing object lens are sequentially arranged from top to bottom and optical axes thereof are superposed; the surface of a three-dimensional workbench is positioned below the first focusing object lens; the total reflector is movably mounted on the reflection optical path of a sample, an optical cable probe is positioned the reflection optical path of the total reflector; the industrial CCD is connected via the optical cable with a computer having a display, the optical cable probe is connected with a grating spectrograph, an enhanced CCD and the computer. The laser probe instrument can probe micro-area elements of substances losslessly, can satisfy rapid qualitative analysis for element components of devices having various materials and sizes, and can also implement high-accuracy quantitative analysis on micro elements and trace elements in the micro area of the sample.

The invention discloses a fluid bed reactor sound-wave monitoring device and method, where the device includes receiving device, amplifying device, signal collecting device and signal processing device; the method includes the following steps: a, receiving sound signal transmitted in the fluid bed reactor; b, analyzing the sound signal, to select the parameters like frequency f, amplitude A, energy E, energy partition Pi in each frequency segment, etc; the practice proves that it has characters of sensitivity, safety and environmental protection, facility and shortcut, etc, can in time and accurately make on-line analysis on the information in the fluid bed (fluid situation, reaction situation, particle size distribution, flow pattern distribution, etc) during the producing practice, and can control production parameters by analyzing result.

The invention discloses a self-excitation mixed-excitation brushless direct current (DC) power-generating system and a control method thereof, belonging to the category of brushless DC power-generating systems. The power-generating system comprises a mixed-excitation brushless DC generator, a filtering capacitor, two current transformers, an excitation current detecting and regulating circuit, an output current detecting and regulating circuit, an output voltage detecting and regulating circuit and a digital voltage-regulating controller. The control method comprises three steps of control, i.e., voltage feedback control, load current feedback control and excitation current feedback control. The DC power-generating system does not need an external auxiliary power supply and can realize constant-voltage output within a wide rotating speed and large load range. The digital control leads to easy realization of parameter adjustment and modularization design. The DC power-generating system has an important application value in an independent-power-supply DC power-generating system of an airplane, a ship, an automobile, and the like.

The invention discloses a near-line disk base which comprises a cabinet, a server, a manipulator and a plurality of disk storage drawers, wherein the disk storage drawers are in sliding connection with the cabinet through a sliding rail in a drawing mode, the disk storage drawers are longitudinally arranged on one side or two sides of the manipulator, disk storages are installed in the disk storage drawers, a plurality of containing grooves are formed in each disk storage in an array mode, disks are arranged in the containing grooves in an inserting mode, the drawing end of each disk is connected with an interface adaptive board through a first inserting interface in an inserting mode, disk contact points and manipulator contact points which are electrically connected are distributed on each interface adaptive board, the disk contact points and the corresponding disks are broken over, and the manipulator is provided with a probe component which is capable of moving horizontally and vertically. The near-line disk base is free of manual operation, all the disks can be managed automatically in a near-line mode only by the disk storages, the manipulator, the read-write probe and the server, the principle is simple, the near-line disk base is safe and reliable, and all relevant problems caused by the manual operation are solved at the same time.

The battery is composed of the packaging bag made from aluminum-plastic complex film, positive and negative pole pieces, diaphragms, pole ears and electrolyte. The preparing method includes following technical procedures: forming the container for battery core, preparing and shaping positive and negative pole pieces, charging electrolyte, sealking etc. Under general environment, the method can manufacture batteries with different thickness and shapes in low cost and easy operations. The battery possesses the features of high density, lightweight, small size, large discharging current and good periodicity etc.

The invention provides a virtual sample house wandering system based on body sense control. The system comprises a body sensing device, a body sensing device intermediate, a processing system, a virtual reality engine and a display system. The body sensing device is used for acquiring image and depth information of a scene in which a user is. The body sensing device intermediate is used for converting image and depth information acquired by the body sensing device into information readable for a computer. The processing system is used for matching the information readable for the computer with preset template information, triggering corresponding instruction information according to matching results, and transmitting the instruction information to the virtual reality engine. The virtual reality engine is used for bearing virtual models, and controlling positions and facing directions of a virtual camera to allow objects in a virtual space to perform response interaction according to instructions transmitted by the processing system. The display system is used for outputting images rendered by the virtual reality engine in real time. By the body sensing device and the processing system, virtual wandering can be controlled by natural body languages, interaction with virtual objects can be performed by moving hands, and empathy of a user is high.

The invention discloses an optical phase delay precision measuring method and a system thereof. The system of the invention comprises a laser, a polarizer, a photo-modulator, a modulation signal source, a measuring phase retarder, a phase compensator, a polarization analyzer, an optical detector and a result output unit. The method of the invention is as follows that the optical modulator is added into a light path for optical modulation of detection polarized light and then modulation polarized light is generated; a result display unit realizes conversion from measurement of direct current zero point to measurement of alternate current zero point after conducting filtering process of the received signal, therefore, the position of an extreme point can be determined accurately and the measuring precision can be improved. The measurement of the invention is simple and convenient and the result is accurate and reliable, meanwhile, the precision is up to lambada / 300; the invention is suitable for production of a wave plate and other optical delay devices and detection of the product in the sales department.

The invention relates to a solar net plate, in particular to a polyimide solar net plate. The polyimide solar net plate comprises a net frame and a polyester wire net. The polyester wire net is tied to the bottom of the net frame. A silk screen printing hole is formed in the center of the polyester wire net, and the polyester wire net is in a concentric square shape. A stainless steel wire net anda polyimide film are further included. The polyimide film is fixed to the bottom face of the stainless steel wire net. A high-temperature glue layer is arranged between the polyimide film and the stainless steel wire net. The polyimide film is provided with a plurality of wire grooves, and a printing pattern is composed of the wire grooves. The top face of the stainless steel wire net is fixed tothe polyester wire net. The stainless steel wire net is larger than the silk screen printing hole and covers the silk screen printing hole, and a hot melt glue layer is arranged between the stainlesssteel wire net and the polyester wire net. The net plate manufacturing technology is simple, the manufacturing cost is low, the yield is high, the service life of the net plate is long, and frictionresistance and cross section sharpness are obviously improved; and the service life reaches 100,000 times or more, and the purchasing cost of printing net plates is reduced for battery piece manufacturers.

The present invention discloses a quantitative detection method of tea-polyphenol content. Said method includes the following steps: preparing standard sample liquor and color-developing liquor of sample to be detected, then placing proper quantity of color-developing liquor into colorimetric cell on the image collector, collecting original image information; utilizing tea-polyphenol content determination software system based on computer chromaticity identification to read collected original image, comparing chromaticity value of standard sample liquor with known tea-polyphenol content and drawing standard curve, obtaining chromaticity information of sample liquor to be detected so as to obtain the tea-polyphenol content of detected sample liquor.

A method for detecting reactor of fluidized bed includes analyzing sound emission signal received from internal of fluidized bed reactor; selecting characteristic parameter of sound wave signal to confirm material level height in fluidized bed, initial fluidizing speed, initial turbulent flow fluidizing speed and flow mode of particles in fluidized bed; analyzing confirmed items by computer for defining fault coefficient of particle agglomeration and setting threshold of fault coefficient; judging that caking is occurred in fluidized bed when fault coefficient is greater than set threshold.

The present invention relates to a Mueller matrix self calibration measurement method, the biggest characteristic of a Mueller matrix measurement method in the prior art is the need of precision calibration of an optical system of a measuring device, and the difficulty of precision measurement of a Mueller matrix is increased. According to the Mueller matrix self calibration measurement method, Stokes parameters of output polarization states before and after a to-be-test sample is put in are measured, a formula of the functional relationship between measured output light intensity and unknown parameters of a system and a Mueller matrix of a measured sample is established, and the Mueller matrix of the to-be-test sample is obtained by solution with a multiple-parameter nonlinear fitting method. The Mueller matrix self calibration measurement method needs no precision calibration of the measurement system, and realizes the self calibration measurement of the Mueller matrix, and the measurement method is simple and easy to operate, and can be widely used in Mueller matrix measurement of various polarization components and optical systems.