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

96 results about "Equivalent width" patented technology

The equivalent width of a spectral line is a measure of the area of the line on a plot of intensity versus wavelength. It is found by forming a rectangle with a height equal to that of continuum emission, and finding the width such that the area of the rectangle is equal to the area in the spectral line. It is a measure of the strength of spectral features that is primarily used in astronomy.

Light-emitting diode (LED) display system and method having pulse scattering mode

The invention relates to an Light-emitting diode (LED) display system having a pulse scattering mode, which comprises an LED controller and a plurality of LED unit plates which are sequentially connected in series, wherein each LED unit plate respectively comprises an LED driving plate and a plurality of LED lamps; and the LED controller sends out data signals and control signals. An array D[i][0:(H-1)] represents the H-bit grey scale value of one LED lamp driven by a certain i end, D[i][0] represents the lowest-order bit value of the H-bit grey scale, and the D[i][0:(H-1)] is resolved into ahigh-order bit and a low-order bit, wherein the effective display time of the high-order bit is reduced to 1 / 2<n> before being wholly repeated for 2<n> times, namely 2<n>*D[i][n:(H-1)]+D[i][0:(n-1)];scan display is sequentially carried out on the D[i][n:(H-1)] for 2<n> times to enable the display to be more uniform, 2<n> remainders R are used to represent the low-order bit D[i][0:(n-1)], and theremainder bit R and the last bit D[i][n] of the high-order bit D[i][n:(H-1)] have an equivalent width in effective display time; and the formula of the scattering scheme can be shown as follows: D[0:m]=2<n>*(D[n:m]+R). In the mode, brightness can be more uniform, twinkling can be obviously reduced, and different resolution modes can meet application requirements of different systems.
Owner:HANGZHOU XINXUN TECH CO LTD

Method for reallocating table formats in real-time

Embodiments of the invention improve upon existing auto formatting functions for tables presented in a graphical user interface by providing an improved mechanism for changing table columns in real-time. One embodiment of the invention incorporates a callback or module in a program implementing the mechanism for changing table columns in real-time that intercepts a table column resize event and automatically resizes the other columns in the table. In resizing the table columns the module can employ various approaches. For instance, during a resize event the module may calculate the amount of space around each word in each column and readjust the amount of space around the text in order to keep the columns a size that has substantially equivalent white space around each of the respective column entries. Another strategy the module may employ is to adjust the columns to comprise an approximately equivalent width ratio as the table is made wider or narrower. The system may utilize these and other resizing approaches to arrive at a desired result. In addition, columns may be designated as frozen in which case they are not altered while the other columns are altered. Columns may alternatively be set to unfrozen to allow the columns to resize along with other columns using the methods of one or more embodiments of the invention.
Owner:SAP AG

Angle searching method based on multi-beam signals

The invention relates to an angle searching method based on multi-beam signals and belongs to the active radar angle searching technology field. According to the method, a transmit-receivable separation characteristic of a phased array antenna is utilized, on the condition that a directional diagram of an emission antenna is not changed, multi-beam digital signal processing on reception signals is carried out, so an equivalent wave beam width of a reception antenna is improved, and a searching wave position setting number is reduced; a to-be-searched spatial domain is divided into multiple zones or wave positions, acquired multi-beams are utilized for target searching, stay at each wave position for a time segment is carried out in order, that the wave positions having targets can be captured with relatively high probability is guaranteed. Through the method, an instantaneous reception multi-beam directional diagram is formed by utilizing phased array wave beam rapid agility and the digital multi-beam formation technology, reception-direction pattern main lobe coverage is formed at a wave beam overlapping portion during original single wave beam searching, so reception-direction pattern loss is greatly reduced, reception wave beam width is equivalently broadened, and searching performance of a seeker is improved.
Owner:CHINA AIR TO AIR MISSILE INST

Miniaturization double-band-elimination ultra-wide-band microstrip antenna

The invention provides a miniaturization double double-band-elimination ultra-wide-band microstrip antenna, and relates to the filed of ultra-wide-band wireless communication. The miniaturization double-band-elimination ultra-wide-band microstrip antenna comprises a dielectric substrate, a feeder line which is arranged on the dielectric substrate and is used for receiving electromagnetic waves, a radiating unit which is connected with the feeder line and is used for radiating the electromagnetic waves, a grounding plate which is arranged on the lower surface of the dielectric substrate, and two 6-shaped resonance circuits which are arranged on the dielectric substrate and are located on two sides of the feeder line in an axial symmetry mode. The upper end and the lower end of the radiating unit are respectively provided with a non-equivalent-width groove which is shaped like a Chinese character 'gong' and an outer-convex-shaped transition groove. The grounding plate is provided with a stepped groove which is matched with the outer-convex-shaped transition groove. The grounding plate and the radiating unit are designed to be two transition grooves, a standing-wave ratio band width is made to reach 2.4GHz - 11.6GHz, and a 131% relative standing-wave ratio band width is achieved. The non-equivalent-width groove which is shaped like the Chinese character 'gong' and the two 6-shaped resonance circuits respectively correspond to one fourth of 3.3GHz - 3.8GHz and one fourth of 5.0GHz - 6.0GHz, and the trapped wave function and the double-band-elimination design of the antenna are achieved.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI

Method for eliminating edge fault of aluminium killed steel with low manganese-sulfur ratio and low carbon

ActiveCN101912875AEliminate quality impactMeet the requirements of a low-carbon economyTemperature control deviceWork treatment devicesSulfurStrip steel
The invention relates to a method for eliminating an edge fault of aluminium killed steel with low manganese-sulfur ratio and low carbon, belonging to the technical field of steel rolling. The method comprises the following technological steps of: cooling an offline plate blank in an insulating pit, or slowly cooling by stacking; controlling the atmosphere in a heating furnace and the residence time in each stage, the temperature and the total residence time in the furnace of the plate blank; rolling in an equivalent width mode or widening mode; and adjusting a scale removing mode and a layer cooling mode. The invention has the advantage of eliminating the influence of Mn / S on the quality of steel edges by optimizing heating and rolling technologies under the premise of not increasing extra equipment and investment. Compared with the prior art for eliminating the influence of Mn / S on the quality of band steel edges by increasing the content of Mn or reducing the content of S in the plate blank, the invention can greatly reduce production cost and smelting difficulty. The method is economical and effective, meets the requirements of low carbon and economy of green steel, and is especially applicable to the production of low-carbon aluminium killed steel with 10-30 Mn / S.
Owner:首钢股份公司迁安钢铁公司

Automatic correction circuit and correction method of amplifier input offset voltage

The invention discloses an automatic correction circuit of amplifier input offset voltage, and a correction method thereof. The automatic correction circuit firstly accomplishes the auxiliary correction through comparator own offset voltage, and then adjusts the width-to-length ratio of a MOS tube in a MOS tube input-level correction circuit in the amplifier, thereby realizing the correction of the input offset voltage of the whole amplifier; compared with the prior art, the differential input level of the amplifier is modified so that the equivalent width-to-length ratio of the input differential MOS tube pair can be controlled by a digital control code value, the input-level offset voltage of the amplifier is not corrected by compensating the output voltage value of the amplifier, and the correction of the full-differential amplifier offset voltage can be accomplished without continuously adjusting the analog voltage; the acquired corresponding digital control code value can be reserved when the correction is finished, thereby improving the working precision of the subsequent amplifier; and the auxiliary correction of the digital correction control circuit is stopped, so that thepower consumption is saved.
Owner:AMICRO SEMICON CORP

Transverse flux permanent magnetic motor and method for manufacturing stator thereof

Disclosed are a transverse flux permanent magnetic motor and a method for manufacturing a stator thereof. The motor is axially equipped with two or three phases of electromagnetic induction components, and each phase of electromagnetic induction component consists of a stator and a rotor. An iron core of the stator is assembled by a left portion, a middle portion and a right portion, and jointing surfaces of the three portions of the iron core of the stator are conical surfaces utilizing a motor shaft as a symmetrical shaft. The left portion and the right portion of the iron core of the stator are formed by overlapping a plurality of annular silicon steel plates with the same outer diameter and then processing further, the middles of the left portion and the right portion are respectively provided with a through hole with symmetrical tooth profile on the periphery, the outer appearances of the left portion and the right portion are respectively a conical surface which is inclined to the middle and gradually reduced in radius, the middle portion of the iron core of the stator is formed by utilizing a silicon steel plate with equivalent width to wind axially to form a thin-wall cylindrical structure and then processing the thin-wall cylindrical structure further, and two ends of a through hole of the middle portion are respectively equipped with an internal conical surface which is dovetailed with each outer diameter conical surface of the left portion and the right portion of the iron core of the stator. By aid of the stator structure, volume of the motor can be reduced, and power and torque density of the motor are increased.
Owner:无锡威而纳电机有限公司

Reformulated atmospheric band model method for modeling atmospheric propagation at arbitrarily fine spectral resolution and expanded capabilities

A radiative transport band model method for prediction and analysis of high spectral resolution radiometric measurements. Atomic and molecular line center absorption is determined from finite spectral bin equivalent widths. A mathematically exact expansion for finite bin equivalent widths provides high accuracy at any desired spectral resolution. The temperature and pressure dependent Voigt line tail spectral absorption contributing to each spectral bin is pre-computed and fit to Padé approximants for rapid and accurate accounting of neighboring-to-distant lines. A specific embodiment has been incorporated into the MODTRAN™ radiation transport model.
Owner:SPECTRAL SCI +1

Band model method for modeling atmospheric propagation at arbitrarily fine spectral resolution

A radiative transport band model algorithm has been developed for prediction and analysis of high spectral resolution radiometric measurements. Atomic and molecular line center absorption is determined from finite spectral bin equivalent widths. A new mathematically exact expansion for finite bin equivalent widths provides high accuracy at any desired spectral resolution. The temperature and pressure dependent Voigt line tail spectral absorption contributing to each spectral bin is pre-computed and fit to Padé approximants for rapid and accurate accounting of neighboring-to-distant lines.
Owner:SPECTRAL SCI +1

Temper mill working roller bending force adjusting method and device

The invention relates to the technical field of steel rolling and discloses a temper mill working roller bending force adjusting method and device. The method includes the steps of obtaining a current equivalent roller channeling value S1 of a temper mill working roller, an equivalent roller channeling value S0 of the temper mill working roller before the roller channeling value is adjusted, an equivalent width of strip steel B, a regulation effect D (B) of roller bending force for the roller gap convexity under the condition of the equivalent width B and a 6-time symmetrical polynomial roller shape curve; obtaining a calculation equation of the roller bending force adjustment amount of the temper mill working roller according to the roller shape curve, S1, S0, B and D (B) ; adjusting the roller bending force of the temper mill working roller according to the adjustment amount obtained through the calculation equation. According to the temper mill working roller bending force adjusting method and device, a solution for solving the problem of changes of the roller gap convexity due to changes of the roller channeling values of the temper mill working roller through the 6-time symmetrical polynomial roller shape curve is first put forward, the changes of the roller gap convexity due to the changes of the roller channeling values of the working roller are effectively compensated, the control effect of the temper mill on strip shapes is improved, and the strip shape pass rate of tempered products is increased.
Owner:SHOUGANG CORPORATION

Method for determining sectional dimension of thin-walled rectangular hollow beam with lugs

The invention belongs to the field of structural mechanics, and in particular relates to a method for determining the sectional dimension of a thin-walled rectangular hollow beam with lugs for design of a high-speed flutter model. The method for determining the sectional dimension of the thin-walled rectangular hollow beam with the lugs is characterized by comprising the following steps of: figuring out rectangular equivalent width a1 and equivalent height b1 of the thin-walled rectangular hollow beam which has predetermined values of vertical dimension moment of inertia Ix, polar moment of inertia J and wall thickness t; adjusting the predetermined polar moment of inertia J; figuring out an equivalent width a and an equivalent height b; and figuring out a total width L of sections of the hollow beam when the thin-walled rectangular hollow beam with the lugs has predetermined values of lateral moment of inertia Iy and lug thickness t (which is equal to the wall thickness t). According to the invention, the precision of the rigidity of the section of the model is increased, the uncertainty in the model design is reduced, the time for determining the sectional dimension is shortened, and the design efficiency of the flutter model is improved.
Owner:XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA

Hybrid discs

A hybrid disc whose ROM grooves are less than 170 nanometers deep, and whose pre-recorded ROM data pits are more than 350 nanometers or less than 250 nanometers deep, as measured from the effective land level. The ROM pits may be pre-recorded in ROM grooves that are shallower than the ROM pits, where the ROM pits are narrower, of equivalent width or up to approximately 10% wider than the ROM grooves, respectively measured at half-depth, although the transverse extent of the ROM pits will not typically exceed that of the ROM grooves. The ROM lands intervene between consecutive ROM pits, whether or not a ROM groove is provided. In the preferred embodiment, one beam of a dual beam apparatus records the ROM pits, while the other beam records the R-band pre-grooves, and also records the ROM groove, if present. In most embodiments a thermal mastering process provides smooth feature surfaces to facilitate replication of the hybrid disc masters. The berms normally forming at the radial extremities of the pits and grooves in the masters, by thermal expulsion processes, may be reduced or eliminated by methods taught.
Owner:OPTICAL DISC

Drilling rod designed on the basis of Lelord triangle principle and multi-function drilling machine

ActiveCN106761453AHigh precisionSolve the needs of square hole pilesDrilling rodsDrilling casingsEngineeringGear train
The invention discloses a drilling rod designed on the basis of the Lelord triangle principle and a multi-function drilling machine. The problem of square hole and circular hole looping incision is solved, the cross section of the drilling rod adopts the form of an Lelord triangle, and meanwhile, in virtue of characteristics of a planetary gear train, the motion trail of the Lelord triangle is achieved; and through the equivalent-width characteristic of the Lelord triangle, the effect that a square hole is drilled is achieved, and the requirement of some special techniques for square hole piles can be met. According to the technical scheme of the drilling rod designed on the basis of the Lelord triangle principle and the multi-function drilling machine, the cross section of the drilling rod comprises three top points, and the positions of the three top points coincide with the positions of three top points of the Lelord triangle; and the three top points of the drilling rod are sequentially connected through three arcs with the same shape, cutting points used for cutting are arranged on the three arcs, and meanwhile, a soil discharging groove is formed in each arc.
Owner:JINAN RAILWAY TRANSPORT GRP CO LTD

Analysis method for polymer flooding large pore path oil deposit test well

The invention discloses an analysis method for a polymer flooding large pore path oil deposit test well. The method is characterized in comprising the following steps that: 1) according to the characteristics of a polymer flooding large pore path oil deposit, establishing a polymer flooding large pore path oil deposit physical model; 2) according to the polymer flooding large pore path oil deposit physical model obtained in 1), determining a polymer flooding large pore path oil deposit mathematical model; 3) adopting a finite difference method to solve the polymer flooding large pore path oil deposit mathematical model obtained in 2), and obtaining the numerical solution of well bottom pressure; 4) carrying out nondimensionalization on a change relationship of pressure along with time, and drawing the typical curve theory plate of the polymer flooding large pore path oil deposit; and 5) carrying out fitting on the typical curve theory plate of the polymer flooding large pore path oil deposit and an oil field actual measurement data curve, and obtaining the equivalent width and permeability parameter of a large pore path.
Owner:CHINA NATIONAL OFFSHORE OIL (CHINA) CO LTD +1

Graphical interface arrangement display method and graphical interface arrangement display device

The invention discloses a graphical interface arrangement display method and a graphical interface arrangement display device. The method comprises the following steps: reading the screen resolution ratio of a screen; partitioning graphical interfaces according to the screen resolution ratio and generating an arrangement grid; acquiring a to-be-displayed data content set; acquiring an equivalent-width rectangular arrangement template matched with the data content set according to the data content set, wherein the equivalent-width rectangular arrangement template is used for representing an arrangement display method for displaying data contents by arranging different-height equivalent-width rectangular icons in a preset manner in a longitudinal direction of square icons for determining the initial position within the graphical interfaces; and performing arrangement display on the data contents of the data content set according to the equivalent-width rectangular arrangement template. According to the graphical interface arrangement display method and the graphical interface arrangement display device, the problems of low development efficiency and manpower waste caused by repeated development on each front-end interface for a designer, a technicist, a consultant and an interface user in the prior art are solved.
Owner:BEIJING GRIDSUM TECH CO LTD

Blood cell analyzing instrument and recognizing method and system for abnormal cells thereof

The invention discloses a recognizing method for abnormal cells. The method includes steps of: (1) per-grouping to-be-test cells; (2) obtaining a signal which reflects size information of the to-be-test cells and converting the signal into a first electronic pulse, and calculating to obtain an equivalent width of the first electronic pulse; and (3) comparing the equivalent width of the to-be-test cells in one cell group with a preset value of the cell group, if the equivalent width is more than the preset value, recognizing the to-be-test cells as the abnormal cells in the corresponding cell group. Because that an upper limit of the equivalent width of normal cells is certain, cells in the cell group, in which the equivalent width is more than the preset value, is recognized as the abnormal cells. By means of the method, accuracy of recognizing the abnormal cells can be improved. In addition, the blood cell recognizing method is carried out through calculation to obtain the equivalent width of the electronic pulse on the basis of a conventional light scattering method for obtaining the electronic pulse so that the method is free of individual detection channels, thereby reducing complex degree of the instrument and enabling the instrument to be more small-sized.
Owner:CHENGDU SHEN MINDRAY MEDICAL ELECTRONICS TECH RES INST +1

Lamp housing

The invention provides a lamp housing, comprising a top plate and a side wall. The top plate is provided with a first edge, a second edge, a first group of top plate heat dissipation holes and a second group of top plate heat dissipation holes, wherein the first edge and the second edge are arranged correspondingly; each top plate heat dissipation hole has equivalent width and is in a strip type;the mutual spacing of the first group of top plate heat dissipation holes is twice of the width of the top plate heat dissipation holes; the mutual spacing of the second group of top plate heat dissipation holes is twice of the width of the top plate heat dissipation holes; the first group of top plate heat dissipation holes are arranged in parallel toward the center from the position which is 20to 24 times of the hole width distant from the first edge; the second group of top plate heat dissipation holes are arranged in parallel toward the center from the position which is 14 to 18 times ofthe hole width distant from the second edge; and the side wall is provided with side wall heat dissipation holes. In the lamp housing of the invention, top plate heat dissipation holes are opened on the top plate, thus being beneficial to natural convection of the air in the lamp housing, improving the heat dissipation efficiency of the lamp housing, and further reducing the temperature in the lamp housing.
Owner:HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1

Metal wire laying method

The invention discloses a metal wire laying method, which is a process method for paying off along the coordinate system direction of the body surface and grooving and laying by adopting a numerical control machine through a metal wire laying device, and comprises the following steps: paying off along the coordinate system direction of the body surface and grooving and laying a metal wire (2) on the surface of a device for laying, molding and positioning; and after fixing the metal wire (2), molding the meal wire (2) on the device for laying, molding and positioning and transferring the metalwire (2) to the body surface of the product through laying, vacuum-pumping and curing on the surface of a prepreg. By using the characteristics of the numerical control machine, parallel lines or oblique lines in equivalent width / space change can be laid without being limited by the body, the metal wires which have a diameter phi of 0.1 to 1 mm and are made of different soft materials can be laidon the surface of any body, laying precision and speed are high, and the metal wire laying method effectively solves the problem that the metal wire cannot be laid on the surface of an uneven complexbody with larger curvature.
Owner:XIAN AIRCRAFT IND GROUP

Low-speed high-torque hybrid magnetic material permanent-magnet fault-tolerant motor

The invention discloses a low-speed high-torque hybrid magnetic material permanent-magnet fault-tolerant motor. The motor is a type of a rotor permanent magnet and comprises an external rotor and an internal stator, wherein a single-polarity NdFeB permanent-magnet material radially magnetized is embedded into the external rotor, the internal stator comprises armature teeth and the fault-tolerant teeth, the armature teeth and the fault-tolerant adopt different tooth widths to increase the groove area to the greatest extent, small grooves are formed in the teeth to form equivalent-width modulation poles, ferrites radially magnetized are embedded into the small grooves, and the armature teeth are wound with a single-layer concentrated winding. In the hybrid magnetic material permanent-magnet fault-tolerant motor, the limited space of the stator is fully utilized, the ferrite materials are embedded into the small grooves on the stator teeth which are not uniformly distributed at the periphery of the stator, the interpolar magnetic leakage of the permanent magnet on the rotor and the cogging torque of the motor are reduced, the utilization rate of the permanent magnet is improved, and the power density of the motor is enhanced as well as the fabrication cost is reduced.
Owner:JIANGSU UNIV

Recognizing method and recognizing system of particles in blood sample and blood cell analytic instrument

In the application, a recognizing method and a recognizing system of particles in a blood sample and a blood cell analytic instrument are disclosed. Firstly, according to an electronic pulse corresponding to a light scattering signal generated by irradiation on to-be-tested particles in the blood sample, a leukocyte group is recognized from the blood sample; and then an equivalent width indicating value of the to-be-tested particles in the blood sample is determined with correspondence to the electronic pulse by the light scattering signal which reflects size information of the to-be-tested particles; a scatter diagram of the equivalent width indicating value to electronic pulse amplitudes of information which reflects a complex degree of the to-be-tested particles is established; and non-cell particles are recognized from the leukocyte group in a manner of comparing the to-be-tested particles with a preset area in the scatter diagram. By means of the technical scheme, the non-cell particles in the blood sample can be recognized, thereby finally eliminating influence of the non-cell particles on leukocytes and improving recognizing accuracy of the particles in the blood sample.
Owner:CHENGDU SHEN MINDRAY MEDICAL ELECTRONICS TECH RES INST +1

Positioning method and positioning system for mobile robot

The invention discloses a positioning method and a positioning system for a mobile robot. The method comprises the following steps: laying two-dimensional codes, and non-equivalent width guide lines and equivalent width guide lines of the two-dimensional codes on the ground; scanning the two-dimensional codes below a central camera by using the central camera at a center, controlling the robot tocorrect an absolute position by a central controller and acquiring the absolute position and moving direction of the robot; tracking the equivalent width guide lines by a front camera and a rear camera to obtain the moving direction and the deviation position of a trolley, thus controlling the robot to walk along the equal width guide lines on the ground; detecting an identifier of the non-equivalent width guide lines by the front camera of the robot, thereby calculating out walking frames of the robot and calculating out the walking distance of the robot by combining with coding disc data inthe robot; and when the robot arrives at the end point, slowing down and starting the central camera positioned at the bottom of the robot to read an exact stop position signal. The positioning method and the positioning system for the mobile robot, disclosed by the invention, have the advantages of high anti-jamming ability, simple positioning and capabilities of supporting both left and right offset correction and distance correction.
Owner:广州市技田信息技术有限公司

Simulation method of LDMOS (laterally diffused metal oxide semiconductor) array

The invention discloses a simulation method of an LDMOS (laterally diffused metal oxide semiconductor) array. The simulation method includes that a macro-model is established aiming at an LDMOS layout array structure according to sizes Wy variable in width and N arched doors in a layout, the macro-model is internally embedded with a computational formula of a total equivalent width of a drain terminal drift region of an LDMOS as well as an LDMOS subcircuit model with an equivalent channel width being the total equivalent width of a drain terminal drift region of the LDMOS, the total equivalent width of the drain terminal drift region of the LDMOS array can be automatically calculated by a user inputting partially adjustable variables in the layout, electrical characteristics results, corresponding to the LDMOS array, of simulation can be outputted, and meanwhile, corrected parameters are added into the model. Flexibility and precision of the model are improved by means of fitting, great convenience is brought for designers to simulate current of the LDMOS array different in size, and design efficiency is improved accordingly.
Owner:SHANGHAI HUAHONG GRACE SEMICON MFG CORP

Progressive-strength concrete wall section dirt band limit receding gob-side entry retaining method

The invention discloses a progressive-strength concrete wall section dirt band limit receding gob-side entry retaining method. A gob-side entry support is mainly composed of an internal wall, a gangue wall and an external wall. The internal wall and the external wall are filling bodies with progressive strength and are constructed in an equivalent width mode by using concrete materials. The gangue wall is piled up through woven bags containing gangue. The spacing distance among all sections needs to be determined according to the actual geological structure. According to the progressive-strength concrete wall section dirt band limit receding gob-side entry retaining method, in the earlier stage of roof settling, yielding control is achieved depending on yielding clamp pads inside the gangue wall and low yielding portions on the upper portion of the concrete wall, and roof settling is allowed to exist; in the later stage of roof moving and settling, limit deformation control of a roof is achieved through the compacted gangue wall and the high-strength filling bodies. The progressive-strength concrete wall section dirt band limit receding gob-side entry retaining method has the characteristics of being low in gob-side entry retaining cost, good in gob-side entry forming, high in security, good in stability and the like, is wide in application range and can be applied to the hard roof and other complicated geological conditions.
Owner:SHANDONG UNIV OF SCI & TECH

Double-layer volute structure of turbocharger compressor

The invention discloses a double-layer volute structure of a turbocharger compressor. The double-layer volute structure comprises an air intake shell (1) and a volute (2), wherein the air intake shell (1) is connected with the volute (2) through a pressing plate and screws; the air intake shell (1) has an intake air bypass recycling structure; and an air flow passage of the volute (2) is divided into two stages of which the first stage is an annular flow passage and the second stage is the conventional snail-shaped flow passage. In terms of design features, the annular flow passage is designed according to equivalent width from a diffuser outlet to a part with the maximum radius of the flow passage and is designed according to a constant section from the part with the maximum radius of the flow passage to a flow passage outlet. By using the double-layer volute structure of the turbocharger compressor, the complexity of processing technology is reduced, the supercharging pressure and the capacity of doing work are improved, the loss of the compressed air in the annular flow passage is reduced, and the circulating capacity of the annular flow passage is improved.
Owner:CHINA NORTH IND GRP NO 70 RES INST

Sub-wavelength multimode Y-branch waveguide

ActiveCN110568555ASolve the schema mismatch problemOptical light guidesGratingPhotonics
The invention belongs to the field of integrated photonic devices, provides a sub-wavelength multimode Y-branch waveguide, and aims to solve the problem of mode mismatch due to the fact that the minimum gap width of a branch waveguide based on an existing photoetching process is not zero. The sub-wavelength multimode Y-branch waveguide comprises an input main waveguide and two output branch waveguides, the minimum gap width of each output branch waveguide is not zero, the input main waveguide comprises a straight waveguide and a chirped sub-wavelength slit waveguide which are connected, and each output branch waveguide comprises two S-shaped waveguides. The chirped slit structure is introduced into the main waveguide, and the slit structure is composed of N sections of different one-dimensional sub-wavelength gratings. The equivalent width or the equivalent material refractive index of the N sections of sub-wavelength gratings is optimized in design to equivalently realize the branch waveguide whose gap width is changed gradually from zero heat radiation, the problem of mode mismatch is solved, additional loss and crosstalk of a device are reduced, and the performance of the multimode Y branch waveguide is improved.
Owner:HUAZHONG UNIV OF SCI & TECH

Inductance measurement method and measurement device

The invention discloses an inductance measurement method and a measurement device. The measurement method comprises the following steps: S1, HY12P66 outputs equivalent-width square wave from a PT2.2 pin; S2, equivalent-width square wave is inputted from a PA6 pin and then outputted from a PA4 pin via a switching network and applied to a standard resistor and a measured inductor which are mutually connected in series, wherein voltage applied to the standard resistor is U1 and voltage applied to the measured inductor is U2; S3, U1 and U2 are transmitted to an MCU via a network switch, and true virtual value conversion is performed on U1 and U2 by the MCU; S4, the MCU controls the switching network according to numerical values after U1 and U2 conversion so that a measuring range is automatically converted; S5 proportion operation is performed on U1 and U2 converted into DC voltage at the MCU, and U1 and U2 are transmitted to a display driver via an A / D converter; and S6, the display driver drives a displayer to display a measurement result. The inductance measurement method is rapid and accurate.
Owner:贵安新区仪源矽晶科技有限公司

Periphery electrode width changeable contact screen

The coordinates of the touch point on the touch screen are determined by the electrical signal of the touch point on the conducting film possessing the distribution of electric field. The inner contour line of the electrode around the conducting film forming the said distribution of electric field is a curve line. The trend of the curve change of the inner contour line is consistent with the trend of the ordination curve of the equivalent width electrode. The outer contour line can be straight line, curve lineor polygonal line. The non-linear distribution of electric field can be multiple corrected in order to expand the linear touch positioning area.
Owner:NO 55 INST CHINA ELECTRONIC SCI & TECHNOLOGYGROUP CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products