108results about How to "Flexible and convenient design" patented technology

The invention belongs to the analog digital mixed circuit technology, particularly relates to a scale factor temperature compensating method of a current frequency conversion circuit. The method comprises the following steps: step 1, storing compensating values of specified temperature points, further comprising: step 1.1, obtaining the average value of the scale factor of a circuit to be compensated at normal temperature as a datum point; step 1.2, obtaining the average value of the scale factors of multiple temperature points (except normal temperature) of the circuit to be compensated and calculating the deviation from the datum point; and step 1.3, storing; step 2, compensating the circuit to be compensated with a compensation value stored in advance, further comprising: step 2.1, measuring environment temperature in real time with a temperature sensor; step 2.2, carrying out table lookup or interpolation calculation to determine the compensation value; and step2.3, carrying out temperature compensation. The processor circuit is implemented through FPGA, is flexible in design, can be applied to software for carrying out error compensation to measurement signals, is capable of compensating the scale factor of a temperature curve with the nonlinear characteristic and thereby further providing guarantee for high precision, miniaturization and low cost of the circuit.

The invention discloses a self-adaption blind equalization method in a high-speed data transmission system. A satellite communication channel is modeled and group time delay and a non-linear characteristic of the channel are simulated. In an initial working phase of an equalizer, a CMA algorithm irrelevant to decision correctness is employed. The algorithm is applicable to various constant modulus modulation signals and is applicable to various satellite communication environments. Most of ISI is eliminated by self-adaptively equalizing received signals in a very large application range. When a system is basically stable, namely when the CMA algorithm is converged stably and most of the ISI is eliminated, an error probability of passing through a decider by carrier synchronized signals is controlled within a certain range. A decision feedback loop is started at this moment. The intersymbol interference is furthered reduced by the equalizer through adoption of a DD-LMS algorithm with relatively few residual errors. The residual errors are greatly reduced, and the system performance is improved.

The invention provides a high-low voltage device for a plasma display driving chip and a preparation method. The device comprises a high-voltage N-type lateral isolation gate bipolar type transistor, a high-voltage P-type lateral double diffused metal oxide semiconductor field effect transistor, a high-voltage N-type lateral double diffused metal oxide semiconductor field effect transistor, a high-voltage diode and a low-voltage device. The preparation method comprises the following steps of: making a buried oxide layer and depositing a P-type epitaxial layer on the P-type substrate; making a high-voltage N-well and a high-voltage P-well of the high-voltage device on the P-type epitaxial layer; then making P-type body areas of the high-voltage N-type lateral isolation gate bipolar type transistor and the high-voltage P-type lateral double diffused metal oxide semiconductor field effect transistor on the P-type epitaxial layer; and making all low-voltage wells on the P-type epitaxial layer. The chip structure in the invention has the advantages of low chip power consumption, small chip area and high reliability, and can be compatible with manufacture technology of a standard low-voltage complementary type metal oxide semiconductor field effect transistor.

The invention discloses a strip-rolling variable contact support roller and a processing method thereof. Roll forming curves are superposed by using a five-section sine function, so the contact line length between the support roller and a working roller is close to the width of the rolled strip steel, the harmful contact area during the rolling process is decreased, the regulating and controlling function of the roller force is promoted, the roll-gap crosswise rigidity is increased, the contact pressure between rollers is uniformed, and the accident that the edge of the roller falls off is decreased or completely eradicated. During the grinding process, a superposed roller forming of a variable contact section and a chamfer section at two sides of the roller is firstly grinded and then the whole roller is grinded so as to promote the processing efficiency and decrease the grinding wheel consumption. The support roller of the invention is convenient to design and process and is easy to realize the industrial application.

The invention discloses a denitrification method combining a denitrification agent and ultraviolet light and belongs to the technical field of water treatment. The denitrification method comprises the following steps: adding the denitrification agent into water for treating, after uniformly mixing, irradiating by using the ultraviolet light; or leading the water for treating into an ultraviolet light reactor, directly adding the denitrification agent into the ultraviolet light reactor to finish the denitrification treatment, wherein the wavelength of the ultraviolet light is less than 400 nanometers; the used denitrification agent is composed of one or more of sulfite, hydrosulphite, sulfur dioxide, pyrosulfite, hydro-metabisulfite, thiosulfate, sulfide, sodium bisulfide, ferrous ion and iron ion; the denitrification agent is added according to the Mole equivalence ratio of sulfur contained in the denitrification agent to nitrogen contained in nitrogen pollutants in the water for treating of being (0.1-100):1. By using the denitrification method, the purpose of efficiently and harmlessly removing nitrate, nitrite, ammonia nitrogen, nitro substituted organic matters, nitroso substituted organic matters and azo compounds in the water is achieved.

The invention provides a space omnidirectional light-emitting diode (LED), comprising a substrate, LED luminous wafers, a support body and a reflective blade surface, wherein the LED luminous wafers are distributed on the solid crystal positions of the substrate in an equal-angle circumference array manner; the reflective blade surface is designed to form multi-section angles with the horizontal direction; the substrate and the reflective blade surface are assembled into a stereo bracket via the support body; and the reflective blade surface is arranged on the substrate while the orthographic projection of the reflective blade surface on the substrate only covers a plurality of LED luminous wafers of the multiple LED luminous wafers. The invention adopts the front emitted light and reflective light of the reflective blade surface of the LED to irradiate light to the surrounding space and achieve evenly luminous effect in a stereo space.

The invention discloses a perovskite photoelectric detector for accelerating electron filtering. The perovskite photoelectric detector comprises a substrate, an anode, an active layer and a compound cathode, wherein a hole-transporting layer is arranged between the anode and the active layer and an electron filtering layer is arranged between the active layer and the compound cathode. According to the invention, a perovskite material, which is characterized by high migration rate, low exciton binding energy, longer exciton life and longer exciton diffusion length, is taken as the active layer of the photoelectric detector, so that the loss of heat exciton in the device is greatly reduced. A novel electron filtering layer is creatively provided; the electrons can be effectively transmitted to the cathode and then collected; the recombination probability of exciton and the quenching effect of electrode to exciton can be greatly reduced; the obtained perovskite photoelectric detector has higher external quantum efficiency and spectral responsivity; the performance is obviously promoted.

The invention relates to a quasi-planar high-isolation multi-path power divider. An input radio-frequency signal is subjected to multi-path power allocating and input impedance matching through an upper-level power dividing network. Meanwhile, the insulating characteristics and the output VSWR at all output ports are ensured to be excellent through a lower-level isolating network and an isolation resistor. The upper-level power dividing network and the lower-level isolating network are connected via metallized through holes. According to the technical scheme of the invention, the advantages of a quasi-planar structure, including multiple ports, high isolation, low insertion loss, good input / output standing wave ratio, wide band, small volume, good consistency of signal amplitudes / phases at all output ports, and the like, are realized. Meanwhile, the quasi-planar high-isolation multi-path power divider is convenient to design and the infinite multi-path power distribution can be realized theoretically. The quasi-planar high-isolation multi-path power divider is mainly applied to microwave and millimeter wave power synthesis and amplification systems, phased array antenna feed networks and the like. The quasi-planar high-isolation multi-path power divider has a wide application prospect in the fields of microwave and millimeter wave systems for communication, radar, measurement, control and the like.

The invention discloses a fault detection method and a fault detection device for a block cipher algorithm. The method comprises steps: an operation round number of the block cipher algorithm is preset to be N, input data In are received, M rounds of operation are carried out on the data, and an operation result S1 is obtained; round operation is continuously executed on the S1 until N rounds of operation are completed, and an operation result Out is obtained; N-M rounds of inverse operation are executed on the Out to obtain an operation result S2; and the S1 and the S2 are compared, if the S1 is equal to the S2, no fault happens, and if the S1 is not equal to the S2, error information is returned. According to the fault detection method for the block cipher algorithm, corresponding rounds of inverse operation are executed after normal operation is completed, the inverse operation result and the normal operation middle result are compared whether to be equal, and whether fault injection happens during the operation process can be detected. A proper inverse operation round number can be selected according to application requirements, the design is convenient and flexible, and compared with the prior art, the method is small in increased cost and high in execution efficiency.

The invention discloses a vehicle-used hybrid energy storage control system based on dSPACE and a motor test bench. The vehicle-used hybrid energy storage control system comprises a dSPACE-based energy management controller, the vehicle-used motor test bench, a power battery pack, a power battery management module, a supercapacitor bank, a supercapacitor management module, and a bidirectional DC / DC direct current transformer, wherein the dSPACE-based energy management controller is connected with the power battery management module, the supercapacitor management module, the bidirectional DC / DCdirect current transformer and a tested motor controller on the vehicle-used motor test bench; and one end of the bidirectional DC / DC direct current transformer is connected with the supercapacitor bank, and the other end is connected with the power battery pack and a DC power supply terminal of a tested motor. The vehicle-used hybrid energy storage control system can implement various energy management control strategies simply and flexibly, and is convenient for testing energy utilization efficiency and energy distribution among various energy storage devices by means of the energy management controller under various typical operating conditions.

An intelligent power system fault recorder comprises a data acquisition unit and a data management unit, wherein the data management unit and the data acquisition unit are communicated through the Ethernet. The data acquisition unit comprises a plurality of signal acquisition control modules, and each signal acquisition control module comprises a signal conditioner, an A / D conversion module, an optoelectronic isolation circuit, a GPS synchronous clock, a wireless communication module, DSP data processing panel and an Ethernet interface circuit. The data management unit comprises a main control chip ARM, a Flash interface circuit, an SDRAM interface circuit, an Ethernet interface circuit, a hard disk interface circuit, a serial port communication interface circuit, a touch screen interface circuit, a JTAG interface circuit, a USB interface circuit and a wireless communication module. The intelligent power system fault recorder solves the problems that all former fault recorders form a network difficultly, are incapable of being mounted in a scattered mode, and large in size of the system, and the intelligent power system fault recorder improves running speed, stability performance and communication capacity.

The embodiment of the invention provides a document template generation method and device, and the method comprises the steps: determining a template style of a document template, and the template style comprises one or a combination mode of a plurality of titles, paragraph titles, paragraphs and graphs; receiving a template generation instruction, wherein the template generation instruction comprises a template element and a mapping relationship between the template element and a template style, the template element is used for receiving input document data; and according to the template generation instruction, controlling the template element to fill the template style according to the mapping relationship between the template element and the template style, and then generating a document template. According to the embodiment of the invention, the template elements can be controlled to be filled into the template style according to the mapping relationship between the template elements and the template style, and then the document template is generated, so that the efficiency of workers is improved.

Disclosed is a design system and method of a spacecraft development process. The system comprises a process diagram design module, a node attribute analysis module, a topological structure recognition module, a node numbering module, an auxiliary line recognition and numbering module, and a project form development module. The design system and method allows for simple and visual operations, has high reliability, and allows complex spacecraft process models to be designed quickly with few human factors; the spacecraft development process models designed by users with the design system and method are high in accuracy, high in modifiability and the like.

The invention discloses a method for achieving the clock main equipment reversing without code error, which comprises the following steps: it links the hardware of the two clock units so that the clock signal can transmit to each other; the main clock unit controls the output clock signal by locking phase algorithm so that the output clock signal keeps the uniform with the input external guideline clock signal, and the stand-by clock unit real-time follow-ups and locks the output clock signal of the main clock unit; when it has the main equipment reversing, the stand-by clock unit controls the output clock signal by the control value of the main clock unit so that the output signal after reversing has the same frequency and the same phase with the clock signal before the reversing. It also discloses an appliance for achieving the clock main equipment reversing without code error.

The invention relates to a multi-dimensional four-rotor aircraft attitude control simulation experiment platform. The experiment platform includes an aircraft, a flight controller and an upper computer, the upper computer, the flight controller and the aircraft are connected in sequence, the aircraft includes a three-degree-freedom rotating component and a plurality of aerofoils detachably connected with the rotation component, one ends of the aerofoils away from the rotating component are equipped with brushless motors and propellers, the aerofoils are provided with electronic speed regulators, the brushless motors are connected with the electronic speed regulators and the propellers, and the flight controller is connected with the electronic speed regulators. Compared with the prior art, the multi-dimensional four-rotor aircraft attitude control simulation experiment platform provided by the invention has the advantages that the detachable aerofoil design is flexible and convenient, an algorithm is updated in real time, a simulation effect is good, the aircraft state is monitored in real time and research and development cost is reduced.

The invention discloses a self-Q-switched cross-polarized dual-wavelength pulse laser with a compact structure. Adjustment of wavelength and polarization is realized by optimally designing the inclination angle of an output mirror, and self-Q-switched cross-polarized dual-wavelength pulse laser output is realized by using the nonlinear reabsorption effect of a Yb<3+>:Ca3Gd2(BO3)4 crystal. The polarization directions of two output wavelengths are vertical to each other, and the frequency difference is on a terahertz waveband.

The invention provides a wire rod circuit and a wire rod. A Type-C interface circuit in the wire rod circuit is connected with target equipment, and a USB interface circuit is connected with power transmission equipment; a master control circuit at the Type-C interface circuit is connected with the target equipment; and after the USB interface circuit is connected with the power transmission equipment, a charging protocol of the target equipment and a fast charging protocol of the power transmission equipment are obtained, and a target charging circuit is determined in a direct-through circuitand a booster circuit based on the charging protocol and the fast charging protocol, so that the fast charging of the target equipment is realized through the target charging circuit. In the wire rodcircuit, no matter whether the charging protocol of the target equipment is matched with the fast charging protocol of the power transmission equipment or not, the fast charging of the target equipment can be realized through the target charging circuit, and the wire rod circuit is compatible with various charging protocols, so the use is convenient, the defect that people carry many chargers when going out is avoided, and the technical problem that an existing charging product only supports one charging protocol and is poor in compatibility is solved.

The invention relates to a resonator, in particular to a dual-mode opening ring resonator based on a through hole; dual modes with adjustable coupling degree are generated on the basis of through hole. The opening ring resonator comprises a first opening ring (1) and a second opening ring (4); the first opening ring (1) is embedded inside the second opening ring (4); two terminals of the first opening ring (1) have open circuits; the middle part of the first opening ring (1) is connected with a first extension wire (3); the end of the first extension wire (3) is connected with a first through hole (2); two terminals of the second opening ring (4) have open circuits; the middle part of the second opening ring (4) is connected with a second extension wire (6); the end of the second extension wire (6) is connected with a second through hole (5); and two terminals of the second opening ring (4) are arranged at one side of the second extension wire (6) of the first opening ring (1). The opening ring resonator of the invention has dual-mode characteristic, simple design, compact structure, convenient process and low cost.

The invention provides a method for lowering the hot cracking tendency of invar welding through layered pulse lasers and belongs to the technical field of laser welding. According to the method, the layered pulse lasers are used for controlling laser energy, and preheating, welding and post-welding post-heating are achieved during each laser period, wherein the preheating lasers play a role in lowering the welding temperature gradient; the welding lasers achieve connection of weld metal; the post-welding post-heating lasers play a role in reducing the cooling rate of the post-welding weld metal. The layered laser energy is controlled to control the preheating temperature, the preheating temperature range, the welding heat input amount and the post-welding post-heating energy by adjusting the power and pulse width of the layered lasers; the welding temperature gradient and the post-welding cooling speed are adjusted in combination with control over the pulse frequency so that the welding stress of invar laser welding can be reduced, and the problem of hot cracks of invar welding can be solved. By means of the method, the welding speed can be greatly increased, and the hot cracking tendency of invar welding can be lowered. The welding speed can reach 500-800 mm / min, and the cooling rate of the post-welding weld metal is reduced by 50-80 DEG C / s.

The invention relates to a lattice screen with a particular appearance and a processing process thereof. The lattice screen comprises a screen plate which comprises a lattice plate, wherein the lattice plate comprises inner skeleton structures, outer skeleton structures and connecting keels, the inner skeleton structures and the outer skeleton structures are in a same structure, each inner skeleton structure comprises four inner keels which are mutually vertically connected with one another, each outer skeleton structure comprises four outer keels which are mutually vertically connected with one another, the inner skeleton structures are embedded into the outer skeleton structures, the outer skeleton structures are connected together through the connecting keels, and every two adjacent outer skeleton structures share one outer keel. The processing process of the lattice screen with the particular appearance comprises the following steps of material preparation, point determination, unit splicing and connecting, plate filling, slicing, screen formation and the like. By carrying out the point determination step, splicing positions are relatively accurate, and the splicing procedure can be simplified; the process is simple; a big screen can be flexibly and conveniently designed according to an overall design requirement.

The invention relates to a U-shaped micro-channel dehumidifying heat pipe and a use method of the U-shaped micro-channel dehumidifying heat pipe. The U-shaped micro-channel dehumidifying heat pipe comprises a first component arranged on the front side of a surface air cooler, a second component arranged on the back side of the surface air cooler and a third component connected with the first component and the second component. The first component comprises a first gas pipe and a refrigerant liquid inlet pipe and further comprises a first micro-channel branch pipe communicating with the first gas pipe and the refrigerant liquid inlet pipe. The second component comprises a second gas pipe and a refrigerant liquid return pipe and further comprises a second micro-channel branch pipe communicating with the second gas pipe and the refrigerant liquid return pipe. The third component comprises a gas connecting pipe communicating with the first gas pipe and the second gas pipe and further comprises a liquid connecting pipe communicating with the refrigerant liquid inlet pipe and the refrigerant liquid return pipe. The U-shaped micro-channel dehumidifying heat pipe and the use method of the U-shaped micro-channel dehumidifying heat pipe have the advantages that the structure is simple, the design is reasonable, the automation degree is high, the heat exchange efficiency is high, the operation performance is reliable and stable, gravity backflow of a refrigerant can be achieved by means of a height difference, the energy loss is reduced, and the U-shaped micro-channel dehumidifying heat pipe can be widely applied and popularized.

The invention discloses a porous magnetic spherical material with a sewage and contaminated soil purification function and a preparation method thereof. The material can be used for removing contaminants in papermaking wastewater, textile wastewater, printing and dyeing wastewater, electroplating wastewater, rubber industry wastewater, domestic wastewater and the like, soil contaminated by the sewage, wastewater containing organic contaminants or heavy metal contaminants or containing the organic contaminants and the heavy metal contaminants, and the contaminated soil. By the adoption of the nano-technology, a nano functional material and a natural polymer material are compounded, and preparation of the multifunctional magnetic porous spherical material is completed through metal particle marks and chemical crosslinking reactions. The material can degrade the organic contaminants and the heavy metal contaminants in the wastewater and the contaminated soil, recovery, regeneration and reuse can be achieved through magnetic separation, spherical materials of different scales can be obtained through adjustment of the preparation process, and the design of the treatment process of the wastewater and the contaminated soil is more flexible and efficient.

The invention discloses FPGA (Field Programmable Gate Array)-based bonded phase frequency doubling method and device. The frequency doubling device comprises a square wave processor, an adding counter, a linear predicator, a corrector, a divider, a bonded phase multiple storage device, a latch and a subtract counter which are programmed by a VHDL (Visible Hardware Description Language) and are integrated into one FPGA. A bonded phase signal is processed by the square wave processor to become a standard square wave signal; the adding counter is used for counting the period of the square wave signal under the trigger of a clock signal; a counting value is transmitted to the linear predicator to predict a next periodical value of the bonded phase signal; a periodical predication value is checked by the corrector to be correct and then is transmitted to the divider for dividing by the bonded phase multiple to obtain a quotient which is latched by the latch; the subtract counter carries out the subtract counting by taking the quotient in the latch as a module value; and an overflow signal of the subtract counter is a frequency doubling signal. The device has compact structure; and the method and the device have the advantages of high integration degree, flexible configuration of frequency doubling coefficient, wide frequency doubling range, capability of periodical carrying out the linear detection on the bonded phase signal, high frequency doubling precision and higher stability and reliability.

An underground intelligent traffic management and control system disclosed by the present invention comprises a control machine, a card reader, a vehicle positioning card, a signal lamp and an upper computer, the card reader is in communication connection with the control machine through UDP, and the vehicle positioning card is in communication connection with the card reader through UWB; the signal lamp is in communication connection with the control machine through RS485, and the control machine is in communication connection with the upper computer through TCP. According to the underground intelligent traffic management and control system, the card reader reads the position information of the vehicle positioning card and sends the position information to the control machine, the control machine formulates the driving logic of the vehicles at an intersection according to the position information and the driving direction of the vehicles and controls the states of the signal lamps, so that the traffic management and control of the vehicles under a mine are achieved; meanwhile, the control machine can upload the information, such as vehicle information, driving logic, etc., to the upper computer for storage, and the workers can check the historical records conveniently.

The invention discloses an IO expansion chip, and relates to the field of electronic technology, electrical control and PLC automatic control. According to the invention, an IO configuration module sets a chip IO pin selection specific configuration as a required input configuration or output configuration; the IO input acquisition filtering module is configured to be selectively connected to an external Pin pin of the chip; the IO output control module outputs the control information written by the MCU to an IO output pin; the interface mode of the MCU communication interface module is a Spi / iic serial communication mode; and the IO driving module outputs a control signal to drive and amplify. According to the invention, the expansion of multiple IO units is achieved, and the expansion ofthe IO units is not limited; input or output can be configured as required, so that the utilization rate of chip pins is improved; the input acquisition loop has an efficient digital filtering function, so that the signal reliability is enhanced; and the output has protection logic and enhanced driving design, so that the requirements of complex control and driving are met.

The invention discloses an arrayed waveguide grating spectrum planarization method. The method is based on a planar optical waveguide technology and has an effect of improving channel bandwidth of arrayed waveguide grating. The method comprises the steps that a transition region (a preview width region) which has a porous structure (7) and is used for transition of strip waveguide (or ridge waveguide) and slab waveguide is designed and manufactured at the connecting part (6) of the ridge or strip waveguide (including input waveguide, output waveguide and waveguide arrays) and the slab waveguide of the arrayed waveguide grating so that an effect of mode field preview width can be achieved. When an optical mode field reaches the boundary of the slab waveguide through waveguide transmission and the porous structure, an original Gaussian mode field is transformed into optical mode field distribution similar to a rectangle so that flat spectrum response can be obtained. The method is easy and feasible and is suitable for large-scale multi-input multi-output arrayed waveguide grating and can be completed only by a standard planar waveguide manufacturing technology.

The method is applicable to communication system including transmission system, and receiving system with clock signal processing unit (CSPU) being embedded. The method includes steps: CSPU receives bit clock signal (CS) and signal of frame head from the transmission system, and carrying out phase locking, and removing burr for bit CS so as to obtain working CS; using mode of counting working CS, CSPU generates signal of the output frame head, which is in same frequency of signal the frame head; CSPU detects the signal the frame head to determine whether it is normal; if yes, making signal of the output frame head synchronize to the frame head, and sending the signal of the output frame head to the data process portion of the receiving system. The invention also discloses CSPU for implementing the method. The invention eliminates influence on communication system caused by burr occurred on head of long line transmission frame.

The invention provides a miniaturization multi-resonance antenna. The miniaturization multi-resonance antenna comprises a dielectric substrate, an annular radiation unit and a non-symmetric coplanar line feed transmission line arranged on the dielectric substrate, a parting structure radiation unit and a monopole radiation unit embedded in the annular radiation unit, and a half edge grounding plane arranged on the dielectric substrate; a dual-U-shaped radiation unit and the monopole radiation unit are both connected with the annular radiation unit; the non-symmetric coplanar line feed transmission line is connected with an inner conductor of an SMA; and an outer conductor of the SMA is connected with the grounding plane. The miniaturization multi-resonance antenna disclosed in the invention adopts the non-symmetric coplanar line feed structure and the inter-radiation-unit feed and multi-radiation-unit fusion design, so that a miniaturization design effect is achieved; and in addition,each radiation unit can be designed independently, so that multi-frequency-band design can be realized conveniently.

A metamaterial-based antenna of an embodiment of the invention comprises a metamaterial panel with an electromagnetic wave converging function and a signal source on the focus of the metamaterial panel. The metamaterial panel comprises a circular zone and a plurality of annular zones concentric with the circular zone, wherein the refractive index in the circular zone and the annular zones continuously reduces as a radius increases, and is the same at the parts with the same radius, at least two adjacent zones (a first zone and a second zone) are provided in the plurality of zones, the refractive index in the first zone continuously reduces from n1 to n2 as the radius increases, the refractive index in the second zone continuously reduces from n3 to n4 as the radius increases, and n3 is greater than n2. The antenna converts an electromagnetic wave signal diverged in the form of spherical waves into an electromagnetic wave signal capable of being transmitted in long distance in the formof plane waves, has a small size and a simple fabrication process, and is convenient and flexible to design and suitable for large-scale production.