325results about How to "Simplify design difficulty" patented technology

The invention discloses an alignment system applied in a lithography device, which uses three periods phase grating with crude precision combination in a substrate marker or a substrate station reference marker, uses a first order diffraction light of the three periods as an alignment signal, simultaneously realizes a big capture range and gets high alignment precision, gets labeled deformation information and other useful information, and through the optimum design of the match and/or the layout of the three periods, the influence on an alignment position by asymmetrical deformation of the marker is effectively reduced.

The invention provides an AOG antenna system and a mobile terminal. The AOG antenna system includes an encapsulation antenna disposed between a main board and a 3D glass rear cover and electrically connected with the main board and a metal antenna formed on a surface of the 3D glass rear cover, the metal antenna includes a first antenna attached to an inner surface of the 3D glass rear cover and asecond antenna attached to an outer surface of the 3D glass rear cover, the first antenna corresponds to a position of an encapsulated antenna and is fed by coupling of the encapsulated antenna, andthe second antenna corresponds to a position of the first antenna and is fed by coupling of the first antenna. Compared with the related art, the AOG antenna system provided by the invention greatly reduces the influence of the 3D glass back cover on the internal encapsulated antenna of the mobile terminal by arranging the metal antenna on the surface of the 3D glass back cover, and has high antenna radiation efficiency, small gain reduction and dual-frequency coverage.

The invention relates to a system for measuring a radio-frequency signal high-speed sweeping frequency spectrum based on a digital local oscillator. The system comprises a radio frequency conversion unit, an intermediate frequency signal conditioning unit and a digital intermediate frequency signal processing and controlling unit which are sequentially connected in series. The digital intermediate frequency signal processing and controlling unit is provided with a digital scan synchronous control circuit module and a programmable digital oscillator, wherein the digital scan synchronous control circuit module is connected with an in-phase quadrature (IQ) signal shunt processing circuit module through the programmable digital oscillator, the digital scan synchronous control circuit module is connected with a first local oscillator device, a detector, or a fast fourier transform (FFT) convertor. The invention further relates to a method which is based on the system and achieves synchronous control for the scanning in high-speed sweeping frequency spectrum measurement. Due to the fact that the system and method for measuring radio-frequency signal high-speed sweeping frequency spectrum based on the digital local oscillator are adopted, scanning time is greatly shortened, local frequency accuracy in a scanning process is improved, circuit hardware is simplified, cost is reduced, working performance is stable and reliable, and range of application is wide.

The invention discloses a security chip-based trusted startup method. The method comprises the steps of dividing a BootLoader into 6 parts; based on digital signatures, making mirror images of the 6 parts; storing the key mirror images in a security chip; loading the mirror images of the 6 parts in sequence; performing completeness verification after the mirror images are loaded; and after the completeness verification is passed, starting a boot process of Linux. Key data is stored by using the security chip on the basis of ensuring the credibility of trusted chain startup by adopting the digital signature and the completeness verification, so that the startup credibility can be effectively improved.

The present invention relates to a method and a device for separating liquid or solid particles in air flow, especially to a composite oil gas separation method applied to the crankcase blow-by of internal combustion engine and a composite oil gas separator. The method adopts a mode of combining an active centrifugal type separation and a passive cyclone type separation for separating. The device is mainly composed of an active centrifugal type separator and a passive cyclone type separator. The active centrifugal type separator adopts a one-stage separation. The passive cyclone type separator adopts a two-stage separation. The air outlet (C) of active centrifugal type separator is communicated with the gas tangential inlet (D) of passive cyclone type separator. The center of separation chamber of passive cyclone type separator is installed with an exhaust insertion tube (13) for forming a gas outlet (E) of passive cyclone type separator. The lower end of separation chamber of passive cyclone type separator is installed with an engine oil outlet (F) communicated with the crankcase. The method and the device of the invention have the characteristics of high separation efficiency and suitability for the changing of blow-by along with the work condition.

The invention relates to a composite layered anti-interference controller, in particular to a design of the composite layered anti-interference controller in a type of multisource jamming control system. The anti-interference controller is designed aiming at the multisource jamming control system containing external model description disturbance, random disturbance and energy-bounded disturbance. Firstly, a reduced-order disturbance observer is structured to estimate and counteract the external model description disturbance of the multisource jamming control system; secondly, the controller having H infinity and guaranteed cost performance index is structured, wherein, the H infinity performance index can be used for inhibiting the energy-bounded disturbance in the system, and the guaranteed cost performance index can be used for inhibiting the random disturbance in the system as well as optimizing the upper bound of variance; the composite layered anti-interference controller can be formed by the reduced-order disturbance observer and the feedback controller with a state of robust H infinity and guaranteed cost; finally, based on convex optimization algorithm, gain array of the composite layered anti-interference controller can be solved. The invention has the advantages of strong anti-interference property, convenient design and the like, and can be applied to a navigation and control system of aerospaceplane, etc.

The present invention discloses an LED three-dimensional optical system design method with given illumination distribution and an optical system, which belongs to the non-imaging optical technique of the applied optics field. A three-dimensional non-imaging optical system is formed in a region which has given illumination distribution, by using a light emitting diode as a light source. A three-dimensional lens is designed with the optical system. According to the geometrical shape of the given illumination distribution region, complying with the law of conversation of energy, the surface of the light source and the illumination plane are divided into corresponding energy regions on the long axis direction of the region in accordance with optical refraction, and energy division is carried out in the short axis direction in accordance with the principle of common function of total internal reflection and refraction. The coordinates and the normal vectors of all feature points of the optical system surface of the light source along the long axis direction and the short axis direction are calculated according to the energy corresponding relationship, so as to determine the optical system surface. The method and the system contribute to sufficiently utilizing energy and reducing engineering cost. The encapsulation of the optical system is flexible. Single chip encapsulation and multi-chip encapsulation can be adopted. The arrangement of a plurality of the optical systems is free, simple and flexible.

The invention discloses a distributed multi-agent real-time fault detection method based on local cooperation, and relates to the technical field of multi-agent control. The method comprises the following steps: establishing a multi-agent system topology model, a node dynamic model and a local cooperation network model for a multi-agent system; building a residual generator framework based on local cooperation on the basis of the multi-agent system topology model, the node dynamic model and the local cooperation network model; further introducing a hybrid H2/H-infinity optimization index to the residual generator framework, and obtaining the optimal parameters of the residual generator framework by solving a hybrid optimization problem; performing the distributed construction of a residualgenerator under the optimal parameters to obtain a globally optimal residual signal; setting a threshold function for the globally optimal residual signal; determining that a target node has a faultif the amplitude of the globally optimal residual signal exceeds an amplitude limit value of a threshold function, or else determining that the target node does not have the fault.

The invention provides a novel stem-loop oligonucleotide probe which is provided with the initial status of a stem-loop secondary structure and consists of a loop part and a stem part. The stem part is a hairpin structure which is formed from two complementary base sequences that are combined through hydrogen bond. An identification region which is combined with the specificity of a target molecule is mainly composed of the stem part sequence of the probe. When no target molecule exists, the identification region exists as the hairpin structure of the initial status. When the target molecule exists, the hairpin structure of the stem part disintegrates when the target molecule is combined with the specificity of the identification region, and the probe or the target molecule can produce signal differences that can be detected. The identification region of the invention probe specificity combined or complementary hybrid target molecule mainly or completely bases on the oligonucleotide sequence of the stem part structure. And the oligonucleotide sequence which competes with the target molecule exists in the probe molecule. Therefore, the probe of the invention is provided with higher specificity.

The invention discloses an intelligent garbage recovery system and a dustbin overflow processing method; the intelligent garbage recovery system comprises an intelligent dustbin, an intelligent garbage truck, a wechat mini app client end and a host computer monitoring center; the intelligent dustbin comprises a dustbin body, a dustbin controller, a garbage detector, a dustbin cover turning device,a dustbin positioning device and a dustbin communication device; the dustbin positioning device can position through GPS. The dustbin can detect garbage through an infrared paired transistor; when the garbage in the dustbin reaches certain height and blocks the infrared rays, a garbage overflow alarm signal can be triggered; compared with the prior art, the garbage quantity detection mode is higher in accuracy; the Zigbee network technology and the GPRS communication mode technology are combined, thus reducing the expensive cost of an existing intelligent dustbin employing the GPRS network communication.

The invention discloses an antenna for a microwave reader-writer of an ETC (electronic toll collection) system. The antenna comprises a circular polarization radiation paster (1), an impedance transformation line (2), a 50-ohm microstrip feeder line (3), a dielectric substrate (4), a grounding plate (5) and a frequency selection surface coating (6). The circular polarization radiation paster (1) is arranged at the center of an upper surface of the dielectric substrate (4) through etching. The impedance transformation line (2) connects the circular polarization radiation paster (1) with the 50-ohm microstrip feeder line (3). The grounding plate (5) is arranged below a lower surface of the dielectric substrate (4) through etching. The frequency selection surface coating (6) is fixed right above the circular polarization radiation paster (1) through an insulating support (8). Square metal units (7) are arranged below a lower surface of the frequency selection surface coating (6) through etching, and are disposed in two-dimensional periodic arrangement. The coated antenna prevents adjacent channel interference, has the advantages of simple feed network, narrow wave beam, high gain and low side-lobe, and can be expanded to other radio frequency identification systems.

A locking and releasing device for satellite and rocket separation relates to the technical field of satellite and rocket separation of small satellites. The locking and releasing device comprises a baseplate, connecting seats, clamping jaws and connecting rods, wherein a rotary shaft is arranged in the middle of the baseplate; a rotary block is arranged on the rotary shaft on the upper side of the baseplate; the at least three connecting seats are arranged on the baseplate; a hinged frame is arranged on each connecting seat; the L-shaped platy clamping jaws are arranged on the hinged frames in an inverted manner; a clamping groove is formed in the upper arm of each clamping jaw; a clamping head is arranged at one end of each connecting rod; a locking and releasing swing rod is arranged between each connecting seat and the corresponding rotary block; the middle of each locking and releasing swing rod is hinged to the baseplate; one end of each locking and releasing swing rod is hinged to the rotary block, and the other end of each locking and releasing swing rod is propped against the side arm of the corresponding clamping jaw; a release torsional spring is arranged on the rotary shaft; one end of the release torsional spring is fixed on the baseplate, and the other end of the release torsional spring is fixed on the rotary block; a positioning lock hole is formed in the rotary shaft on the lower side of the baseplate; and a push-and-pull electromagnet matched with the positioning lock hole is arranged on the baseplate. The locking and releasing device has the advantages of simple structure, small size, light weight, high reliability and the like.

The invention discloses an identifying method for the authenticity of a shop. The method comprises the following steps: an authentication code is obtained from a certification information identification device arranged in the shop; a checking code of the shop is obtained from a server; a wireless terminal compares the consistency of the authentication code and the checking code; if the compared result is consistent, the wireless terminal presents a detailed code group of the shop, wherein the detailed code group of the shop comprises the authentication code and the shop telephone; the shop telephone directly guides voice call to a customer service system of the shop to carry out voice confirmation on the authentication code; and if the compared result is not consistent, the wireless terminal presents a vacant code or an alarm. The invention solves the problem of authenticity identification of exclusive shops in the product circulation process of manufacturers, and also comprises an identifying device for the authenticity of the shop.

The invention provides a communication framework and method which are suitable for a modularized multi-level converter control system. The framework comprises an optical fiber communication board card of valve base control equipment (VBC), an optical transceiver module of the optical fiber communication board card, converter control submodule units (SMC) as well as optical transceiver modules and optical fiber channels of the converter control submodule units, wherein one VBC is provided with at least one optical fiber communication board card provided with at least one optical transceiver module; the optical fiber channel is used for realizing the information transmission between the VBC and the SMCs and/or the information transmission between the SMCs. In addition, the invention also provides two communication methods using the communication framework. The communication framework and method solve the problems brought as the number of VBC optical fiber communication ports and the number of the SMCs are not matched in the modularized multi-level converter control system, the software and hardware design complexity of the system is reduced and the framework can be suitable for a high-voltage large-capacity flexible direct system with a larger SMC number by flexible extension.

The invention provides an LED driving circuit. The LED driving circuit comprises a rectifying circuit, a power supplying circuit, a load driving circuit and a switch circuit. A zero-cross detecting unit of the switch circuit is used for detecting the source electrode voltage of a first power switch pipe to obtain the on-off time and the conduction time of a fly-wheel diode, and then LED constant current driving is achieved. According to the LED driving circuit, a driving power source can be simplified, the size of a PCB of the LED driving power source can be reduced, and the cost of an LED driving power application system is reduced; according to the driving circuit, the zero current time of the fly-wheel diode can be obtained with the only requirement for collecting the source electrode voltage of the first power switch pipe, and the design difficulty, the area and the cost of a chip can be reduced; when the driving circuit is in a BCM, the switch loss can be reduced, the power transfer efficiency is improved, and the EMI can be improved.

The invention relates to a finger pressing pressure detection method. The finger pressing pressure detection method comprises steps that an optical fingerprint sensor is provided, and the optical fingerprint sensor has a contact substrate; before a finger completely covers a bearing area of the contact substrate, relative pressing pressure magnitudes of different pressing processes are acquired according to an area change rate of a fingerprint image in the different pressing processes; after the finger completely covers the bearing area of the contact substrate, relative pressing pressure magnitudes of different pressing processes are acquired according to a gray scale change rate of the fingerprint image in the different pressing processes. According to the method, finger pressing pressure detection can be carried out directly through the optical fingerprint sensor, integration of the optical fingerprint sensor and a piezoelectric sensor can be omitted, the number of components of a system can be reduced, system design difficulty is reduced, and cost is further saved.

The invention relates to the technical field of a superconducting quantum interference device (SQUID). The superconducting quantum interference device is characterized in that the SQUID in a multi-ring structure is integrated with inductance coils and resistors to constitute a totally-integrated SBC SQUID in a multi-ring structure, wherein two inductance coils are magnetically coupled with the SQUID in the multi-ring structure respectively, and another inductor is used as a feedback coil of the device; and two resistors are composed of a parallel branch resistor of the device and a heating resistor of the device. The device has the characteristics of full functions and facilitation of parameter regulation; and because the device structures are all formed by strip films, the influence of the magnetic flux creep effect is reduced, and the adaptability of the device to the working environment is improved.

The invention discloses a control method for multi-digit LED nixie tubes, and relates to the electronic technology. The LED nixie tubes control segments (seg) and a common end (com) through a time division multiplex drive port; the segments (seg) are lightened circularly under the control of the common end (com) to display different contents; the multi-digit LED nixie tubes are N-digit L-segment parallelly-connected LED nixie tubes, including N nixie tubes; and each of the nixie tubes has the same segment number L. The control method is characterized in that S output drive ports are arranged; while N is a base number of a cycle, the N output drive ports sequentially control the common end (port), and the other output drive ports control the segments (seg); and N is the digit number of the nixie tubes, and S=N+L. The control method for the multi-digit LED nixie tubes can reduce the number of function output ports of the common end for the multi-digit LED nixie tubes, simplify circuit composition and reduce the design difficulty in control integrated circuits.