50results about How to "Adapt to different applications" patented technology

The invention discloses lithium-sulfur battery anode material comprising porous metal. The porous metal is compounded with lithium sulfide so as to be used as the anode material of the lithium-sulfur battery. The invention also discloses a preparation method of the lithium-sulfur battery anode material comprising the porous metal. According to the invention, by utilizing the characteristics of high electric conductivity, high porosity, high specific surface area and the like of the porous metal, elemental sulfur or the lithium sulfide is filled into pores of the porous metal, metal / sulfur composite material can be manufactured, and the utilization rate of the elemental sulfur and the lithium sulfide and the multiplying performance of the composite electrode can be increased; and simultaneously, by utilizing the strong interaction between the porous metal and the elemental sulfur or the lithium sulfide, the elemental sulfur, the lithium sulfide or polysulfide generated in a charge-discharge process can be more firmly attached on the surface of the porous metal, the dissolution of the polysulfide in an electrolyte, the shuttle effect caused by the dissolution of the polysulfide in the electrolyte and the deactivation on an anode and a cathode by redox product of the polysulfide can be restrained, and the circulation stability of a metal / sulfur composite electrode and the lithium-sulfur battery can be increased.

The invention provides a modularized multi-level converter with the direct-current fault ride-through capacity, wherein modules are divided into the first module and the second module. The structure of the first module is the same as the structure of a module in a traditional modularized multi-level converter, and a few semiconductor switches, a few diodes and a few damping resistors are added to the second module on the basis of the first module. The first module and the second module both have the level superposition function, but only the second module has the direct-current fault ride-through capacity. The modularized multi-level converter with the direct-current fault ride-through capacity not only can achieve the functions of a traditional modularized multi-level converter, but also has the direct-current fault ride-through capacity. Compared with an existing modularized multi-level circuit with the direct-current fault ride-through capacity, the circuit of the modularized multi-level converter is provided with fewer devices and simple in structure. The modularized multi-level converter is applicable to modulation and control strategies of the traditional modularized multi-level converter, applicable to high-voltage high-power occasions and particularly suitable for the high-voltage direct-current power transmission field in which a modularized multi-level converter is applied and prone to direct-current faults.

The invention discloses a self-heating laminated micro-channel reforming hydrogen production reactor, which comprises an upper cover board, an endothermic reaction substrate, an exothermic reaction substrate and a lower cover board, wherein the upper cover board is formed with a vapour reforming reactant inlet, a vapour reforming product outlet, an inlet of hydrocarbon in partial oxidation reforming reaction, and an inlet of oxygen in partial oxidation reforming reaction; the endothermic reaction substrate comprises a vaporization cavity, a vapour reforming reaction cavity, a vapour guide channel and hot circulation channels located on two sides of the endothermic reaction substrate; the exothermic reaction substrate comprises a catalytic combustion cavity, and a partial oxidation reforming reaction cavity, wherein the catalytic combustion cavity is connected with the partial oxidation reforming reaction cavity one another through a channel formed on the middle part of the exothermic reaction substrate. The reactor provided by the invention is characterized by that the whole micro-reactor can be started up and operated with self-heat without an external heat source, and the reactor can greatly improve the efficiency of methanol-vapour reforming hydrogen production reaction; the reactor provided by the invention further realizes recycling waste heat obtained by burning the reaction products and reduces loss of heat energy.

The invention discloses a modular frame bearing energy storage device which comprises a box body, a heat preservation structure, a thermal storage device, a phase-change energy storage unit, an outlet pipe and an inlet pipe. The thermal storage device is arranged in the box body. The heat preservation structure is arranged between the exterior of the thermal storage device and the inner surface of the box body. The box body is a closed structure provided with a plurality of output interfaces and a plurality of input interfaces. The heat preservation structure can be detachably separated from the box body. One end of the inlet pipe and one end of the output pipe are in linkage with the thermal storage device through the box body and the heat preservation structure, and the other end of the inlet pipe and the other end of the outlet pipe are connected with an energy supply device and an energy consumption device respectively. The phase-change energy storage unit and the box body are connected and are inserted into the thermal storage device, the modular design is adopted, and the device is convenient to replace. The modular frame bearing energy storage device can be combined and applied. The phase-change energy storage unit is convenient to replace, simple in structure, convenient to operate, safe and reliable, and convenient to transport.

The invention discloses a motion platform attitude sensing method based on synergy-source DOA information and belongs to the technical field of navigation. According to the method, a fully electromagnetic vector sensor, three orthogonal electric dipoles and three orthogonal magnetic ring dipole antennas are used for receiving navigation signals at single receiving points, and DOAs of signals (polar and nonpolar) are estimated; different signal sources are distinguished according to code division or frequency division; and an attitude reference is provided for the motion platform through two crossed DOA vector structure coordinate systems, and therefore the motion platform has the attitude reference to complete attitude sensing of itself. When a plurality of satellite signal sources exist, attitude parameters are adjusted finely, and the attitude parameter with the smallest weighted sum of error spherical variances in each DOA is found out, so that a plurality of platform attitude matrixes of the DOA information are mixed. According to the method, only the single receiving points are needed on the motion platform to achieve the attitude sensing, and attitude navigators and heading navigators can be substituted.

A time-interleaved analog-to-digital converter for conversion of L analog input signals to L corresponding digital output signals is disclosed. The time-interleaved analog-to-digital converter comprises an array of N (N being larger than L) constituent analog-to-digital converters each having an analog input and a digital output and each adapted to digitize an analog input sample. The time-interleaved analog-to-digital converter also comprises a controller adapted to (for each of the L analog input signals indexed by i=1, 2,..., L) select a number Ni of constituent analog-to-digital converters from the array of N constituent analog-to-digital converters (wherein Ni is larger than or equal to 1 and formula (I)), and cause each sample of the analog input signal to be digitized in a respective one of the selected Ni constituent analog-to-digital converters. The time-interleaved analog-to-digital converter also comprises a multiplexer adapted to (for each of the L analog input signals) multiplex the digitized samples of each of the selected Ni constituent analog-to-digital converters to produce the digital output signal corresponding to the analog input signal.

The invention relates to a UAV (unmanned aerial vehicle) group mounted polarization array attitude measurement and target detection method, and the invention reveals the change rule between the attitude position of a multi-loss electromagnetic vector sensor and the receiving of signals, and achieves the attitude measurement of a platform according to the signals of a plurality of earth satellite navigation systems which achieves the cooperative navigation or the spectrum of a UAV base station signal and maximization. A feature value algorithm is employed for calculating a general electromagnetic wave generalized spatial spectrum, and the polarization signal of a blind signal, the position of a plane, and the frequency shift information are obtained. The installation attitude and position information of a sensor in a plane body is maintained, and the method achieves the multi-target DOA under the conditions that the position of a UAV is not accurate and there is the frequency shift problem.

The invention discloses a motion attitude sensing method based on electromagnetic wave polarization three-dimensional electric / magnetic signal stationary characteristics. The method comprises the steps of receiving electromagnetic wave signals through a sensor at a motion platform reference attitude, obtaining a signal cross correlation matrix, computing a CRB (Cramer-Rao bound) value estimated through attitude parameters, and judging whether the electromagnetic wave signals can be used for motion platform attitude measurement in the environment; computing the signal cross correlation matrix at the motion platform reference attitude, and judging whether the electromagnetic wave signals are stationary at the environment or not according to characteristic values of the reference attitude and a real-time attitude cross correlation matrix; converting the motion platform attitude under a real-time attitude coordinate system to be at a geographic coordinate system, and accomplishing motion platform attitude sensing. The method has the advantages that attitude / course sensing can be realized only by one receiving point on the motion platform, the system can be miniaturized, the measurement accuracy is high, the system can be miniaturized, signals are not interfered by multipath effect, the method can not only be used for actively transmitting electromagnetic wave signals, can also passively receive space distributed broadcast electromagnetic wave signals to measure attitude, and improves the system invisibility. The method is applied to aerospace vehicles.

The invention relates to a 1.6-micron wave band pulse type single-frequency linear polarization laser which is characterized by comprising a seed resource laser, a seed isolator, a beam splitter, a raman optical fiber amplifier, an amplification stage isolator, a collimator, a coupling system and a solid laser amplifier which are connected in sequence. The laser has no complex control system and has the advantages of being compact in structure, high in stability and repetition frequency, adjustable in pulse width and the like.

The invention discloses a parcel supply system, a cross belt sorting system and a parcel supply method. According to the parcel supply system, articles are automatically output one by one through a single-piece separation conveyor, so that the process of manually feeding parcels one by one can be omitted; meanwhile, the problem that the positions of bar codes on the articles conveyed by the single-piece separation conveyor are uncertain can be effectively solved through a six-face code scanning conveying line, so that manual-work-free automatic parcel supply can be achieved; furthermore, the articles are distributed to three parcel supply tables through a deflection wheel sorter, so that it is unnecessary to configure a six-face code scanning conveying line and a single-piece separation device for each parcel supply table, then the complexity of the equipment can be greatly reduced, the integration degree of the equipment is improved, and the utilization rate of the single-piece separation conveyor and the six-face code scanning conveying line can be increased; and meanwhile, compared with an arrangement mode with multiple code scanning devices and single-piece separation devices,the mode can effectively reduce the calculation amount of a control device and is beneficial to lowering the configuration requirement of the control device and improving the calculation efficiency.

The invention discloses a long-short code joint spread spectrum system unmanned aerial vehicle data link transmitter. It adopts the two-way signal orthogonal modulation system of short code direct spread signal and long code direct spread signal. The short code modulation information is the time synchronization information guiding the long code acquisition mode, and the long code modulation information is user data information. Compared with the data link of the short-period direct-spread system, the patent of the present invention adopts the long-period pseudo-random sequence spread spectrum, which significantly improves the anti-intercept ability of the UAV link, and also has high degree of digitization, small size, easy debugging, With the advantages of stable and reliable performance, it is suitable for information transmission in a complex electromagnetic environment that requires a high degree of command information security.

The invention provides a rotation shaft deflection type permanent magnet power generator, relating to the technical field of a power generator. A stator is arranged at the periphery of a rotor, the rotor comprises an annular rotor magnetic yoke inner core, the annular rotor magnetic yoke inner core is made of a magnetic conduction material, a plurality of rotor permanent magnets are arranged on the periphery of the rotor magnetic yoke inner core, N poles and S poles of all rotor permanent magnets in a circumferential direction are alternatively arranged, a magnetic isolation sheet made of a non-magnetic conduction material is arranged between each two adjacent rotor permanent magnets, a stator groove is arranged on the inner side surface of the stator, a distributed winding is embedded into the groove, a side, opposite to the rotor, of the stator is of a concave surface shape, and the rotation shaft is a dual-sided or single-sided shaft and connected with the rotor magnetic yoke inner core. The rotation shaft deflection type permanent magnet power generator still can normally generate power when the rotor deflects, namely, a certain angle is formed between the axial line of the rotor and the axial line of the stator; the rotation shaft deflection type permanent magnet power generator has the advantages of stable power generation, simplicity in structure and relatively low cost; with the additional arrangement of a concentrated winding for deflection, a power-driven state can be entered in short time when the deflection angle of the rotor is required to be actively adjusted; and the rotation shaft deflection type permanent magnet power generator can be widely applied to the fields of wind driven power generation, vehicles and the like.

The invention discloses a display device and a method thereof. The display device comprises a display panel, an image separating layer and a phase difference device; the display panel is used for providing an original image optical signal; the image separating layer is arranged above the display panel and has parallel shielding patterns in a first direction, so that the original image optical signal becomes a plurality of display image optical signals of different display angles; the phase difference device is arranged on one side of the image separating layer and has parallel phase patterns in a second direction perpendicular to the first direction, so that the display image optical signals comprise first phase light and second phase light. In addition, the invention also discloses a method for presenting a three-dimensional image.

In order to solve the existing problems that particular materials are high in loading cost, low in efficiency and difficult to maintain, the invention provides a loading machine for particular materials. The loading machine for the particle materials is composed of a material poking wheel, conveying belts and a traveling wheel and is characterized in that the material poking wheel is driven by a motor to rotate, and the left end and the right end of the material poking wheel are coaxially and symmetrically provided with augers. The augers rotate to enable materials of two sides to move towards the material poking wheel, meanwhile, a drive shaft of the material poking wheel and driven wheels of the conveying belts are located in the same axis position, and therefore the rotation speed of the motor can be adjusted according to the condition of the materials and the truck loading efficiency can be adjusted. The loading machine is driven by a gasoline engine, the conveying belts are fixed on a rack, at least two conveying belts are arranged on each loading machine, and the loading machine is applicable to different occasions. The loading machine for the particular materials not only solves the problems of waste and pollution which are caused by utilizing a large diesel engine, but also is simple in structure, high in efficiency, and capable of adapting to different application occasions due to the fact that the amount of the conveying belts can be increased or reduced according to different requirements.

The invention discloses a turn-off thyristor device with a separated gate drive. The turn-off thyristor device comprises a turn-off thyristor shell, an auxiliary interface board, a gate drive board and a connecting structure. The turn-off thyristor shell and the auxiliary interface board are connected in a low-inductance integrated connection mode. The gate drive board comprises a drive circuit module. The auxiliary interface board and the gate pole driving board are detachably connected through the connecting structure, so that the thyristor shell and the gate pole driving board can be disconnected or combined.

The invention relates to an FPGA-based video interface diagnosis system and method. The FPGA-based video interface diagnosis system is established through using an onboard FPGA. The method comprises the steps that: the FPGA judges a video interface type, namely, performs analog signal diagnosis when the video interface type is an analog signal interface, and performs digital signal diagnosis whenthe video interface type is a digital signal interface; acquiring a corresponding problem troubleshooting direction from a preset corresponding relation table of diagnosis results and problem troubleshooting directions according to the diagnosis result. Analog signal diagnosis is implemented by the steps that the FPGA collects data obtained after AD conversion and sends the data to an upper computer through using a PCIe interface in a DMA transmission mode, and the upper computer carries out oscillogram description on the received data and marks waveform amplitude. The digital signal diagnosisis implemented by the steps that signals collected by an interface chip are sequentially subjected to video interface signal clock frequency diagnosis, video interface signal loss and signal line sequence diagnosis, video interface signal frequency diagnosis, image time sequence parameter measurement, image collection and display and image quality evaluation by means of the FPGA. According to theFPGA-based video interface diagnosis system and the method, the diagnosis result is used for guiding the user to troubleshoot the problem.

The invention discloses a PWM power amplifier for an antenna. By the adoption of the PWM power amplifier for the antenna, a rotation control signal is converted into the amplified electric power, so that a motor is driven to rotate. The PWM mode is applied to the power amplifier, a voltage, speed and position three-closed-loop control system is applied to an antenna servo system. A power compensation module is used as a parallel compensation output port of an azimuth shaft of the power amplifier so that the driving ability of the azimuth shaft can be improved. One power amplifier is provided with three independent power amplification channels, namely an azimuth channel, a pitching channel and a transverse-rolling channel, and PWM power amplification output is respectively conducted on control signals. Finally, the control signals are output to three direct-current servo motors comprising the azimuth direct-current servo motor, the pitching direct-current servo motor and the transverse-rolling direct-current servo motor. In this way, one power amplifier can fully meet the requirement for three-direction servo control over the radar antenna, and therefore the design of the antenna control system is simplified.

The invention discloses a cooperation source electromagnetic wave space structure correlation information-based antenna pointing direction induction method and belongs to the fields of electromagnetic wave navigation and signal parameter estimation. The method comprises the steps of firstly determining a correlation matrix between each cooperation source wave structure vector and a signal source electromagnetic wave space structure; then receiving phase shift key control signals in the cooperation source by 1 antenna unit in a polarized sensitive electromagnetic vector sector so as to obtain the polarized oval dip angle of each signal; solving the included angle between each signal arrival vector and the antenna pointing direction according to the signal source electromagnetic wave space structure correlation matrix and the polarized oval dip angles thereof; converting an antenna pointing vector under a receiver coordinate system into a reference source wave structure coordinate system according to the polarized oval dip angle of each signal and the included angle between each signal arrival vector and the antenna pointing direction, and then converting into a geological coordinate system, thus finishing the sensing of the antenna pointing direction of the receiver. The cooperation source electromagnetic wave space structure correlation information-based antenna pointing direction induction method can replace sensors such as a magnetic heading sensor, a gravity direction sensor and a north seeker, and can also be applied to the heading / gesture measuring of a motion platform.

The invention relates to an air purifying device. The air purifying device comprises a housing, an air inlet and an air outlet which are formed in the two ends of the housing, a perforated air distributing plate which is arranged inside the housing and close to the air inlet, and an ultraviolet-light generating device which is fixed inside the housing through a fixing rack. The air purifying device is compact in structure, convenient to mount, strong in light energy and relatively complete and quick in sterilization and disinfection function.

The invention relates to a combinable electrostatic kinetic energy collector and a preparation method thereof. The kinetic energy collector comprises a panel, a half-moon-shaped supporting component,an electret film and a groove which are sequentially arranged from top to bottom, if the electret film is formed by covering the upper surface of a polymer film with an upper electrode, negative charges are injected into the lower surface of the polymer film, and the inner surface of the groove is covered with a lower electrode; and if the electret film is formed by covering a lower electrode withthe lower surface of a polymer film, negative charges are injected into the upper surface of the polymer film, and an upper electrode is arranged between the upper surface of the polymer film and thepanel. The panel is connected with the upper electrode through an elastic connecting component, the upper electrode and the lower electrode are respectively connected with an upper electrode lead anda lower electrode lead, and a plurality of kinetic energy collectors are turned over up and down and then are stacked and tiled left and right, so that the gapless combined kinetic energy collector can be obtained. Compared with the prior art, the combinable electrostatic kinetic energy collector can flexibly adapt to different occasions, the installation space is fully utilized, and the kineticenergy collection efficiency is improved.

A circularly polarized antenna device with high isolation comprises a conductive grounding plane, a dielectric substrate arranged on the conductive grounding plane and a plurality of radiation sheets arranged on the surface of the dielectric substrate. The radiation sheets are a layer of metal conductors used for receiving or transmitting signals and comprise a plurality of inverted F-shaped radiation sheet groups which are symmetrically distributed. Each inverted F-shaped radiation sheet group comprises an A-shaped inverted F-shaped radiation sheet and a B-shaped inverted F-shaped radiation sheet. Each of the A-type inverted F-type radiation sheet and the B-type inverted F-type radiation sheet comprises an upper part which is horizontally arranged and a lower part which is vertically arranged. Each A-type inverted F-type radiation sheet serves as a feed point, and each B-type inverted F-type radiation sheet serves as an open circuit. According to the invention, independent output of leftwards rotating circular polarization signals and rightwards rotating circular polarization signals is realized by adopting a plurality of the symmetrical inverted F-shaped radiation sheet groups, the isolation degree is high, the processing is simple, the size is small, the weight is light, the application requirements of receiving or transmitting dual-circular polarization signals are met, and the antenna device is particularly suitable for accurate measurement and guidance of system terminal equipment.

The invention provides a buck-boost inverter and a control method thereof, and belongs to the technical field of power conversion. The circuit comprises an input power supply Uin, first to sixth switching tubes S1 to S6, first and second filter capacitors C1 and C2, first to fourth filter inductors L1 to L4, and first to third diodes D1 to D3. The first end of the S2 is connected with the Uin andthe first end of the S1, and the second end of the S2 is connected with the cathode of the D2 and the L2; the anode of D2 is connected with the second end of S3; the first end of the S3 is connected with the other end of the Uin, the C1, the L1, the second end of the S4, the C2 and the output side; the other end of the L2 is connected with the first end of the S4 and the anode of the D3; the cathode of D3 is connected with the other end of C2 and the first end of S5; the second end of the S5 is connected with the L4; the other end of the L4 is connected with the L3 and the first end of the S6,and the other end of the L3 is connected with the other end of the output side; the other end of the S6 and the second end of the C1 are connected with the anode of the D1; and the cathode of the D1is connected with the other end of the L1 and the second end of the S1. The input side and the output side supply ground to eliminate leakage current, and the direct connection problem of a traditional bridge type inverter is solved.

The invention discloses a bifocal bidirectional combined imaging optical system. The system comprises a short-focus lens group for forward observation, a long-focus lens group for lateral observationand a plane mirror group for turning a light path, wherein the short-focus lens group is composed of five-sheet four groups of lenses, and the long-focus lens group is composed of a double-glued lensgroup and a single lens, a plane mirror set is composed of three plane mirrors, one plane mirror is located on the left side of the long-focus lens group, and the other two plane mirrors are located on the right side of the long-focus lens group. The short-focus large-field-of-view lens group adopts a negative, positive, positive, positive and negative five-piece lens type structure, the focal power is reasonably distributed, the fourth lens and the fifth lens are combined to form the double-glued lens, so the structure is compact, correction of chromatic aberration and spherical aberration isfacilitated, and the imaging quality is greatly improved.

The invention discloses a platform attitude estimation method based on a global satellite navigation signal three-dimensional wave structure, and belongs to the technical field of radar detection andnavigation. According to the invention, a dipole or a magnet ring antenna of each electromagnetic vector sensor fixed on a platform is used for receiving GPS and other global navigation satellite signals to form array data; when a synchronous sampling platform conducts attitude measurement, sensors are matched and superposed to receive satellite signals; the attitude parameter corresponding to thedecoded modulus and the maximum value is the captured motion platform attitude; the attitude measurement refreshing period of the synchronous sampling platform is 1 chip period; when an asynchronoussampling platform conducts attitude measurement, each receiving unit collects information source satellite complex data of a plurality of decoding chips; a multi-dimensional tensor specific data structure is presented according to polarization array received data, and attitude estimation is realized by using array signal processing methods such as a spatial multi-signal classification eigenvalue algorithm and multi-dimensional tensor decomposition; and the attitude measurement refreshing period of the asynchronous sampling platform is a plurality of chip periods. According to the invention, anattitude measurement navigation technology is developed.