213results about How to "Achieve convergence" patented technology

The invention relates to a system and a method for matching and scheduling vehicles. Through a service platform, a vehicle to be ridded by a passenger is confirmed, a matching identifier is assigned and sent to the a mobile terminal of the vehicle so that the vehicle displays a dynamically assigned route number, and the passenger can conveniently identify the vehicle from vehicle flow and finishes meeting and riding the vehicle. The method of the invention can improve the efficiency of scheduling the vehicles, particularly taxies, and enables a plurality of passengers with similar outing routes to conveniently share the taxies so as to greatly improve the efficiency of matching and riding the vehicles, save traveling expenses of the passengers, decrease the idle riding rate of the taxies, save the energy consumption, and have the wide application prospects.

The invention discloses a four-rotor aircraft fault-tolerant control method and belongs to the field of aerocraft control. According to the method, first, based on a mathematical model of an aircraft, an attitude model under the condition of system faults of the aircraft is established; then, according to the attitude model, an adaptive law of fault estimation of an aircraft system is brought out, and a transfer function of loss of actuator effectiveness of the aircraft is also established; an adaptive law of fault estimation of loss of actuator effectiveness is put forward based on the loss of actuator effectiveness; and at last, based on the fault estimation of the system and the fault estimation of loss of actuator effectiveness, a fault-tolerant controller of an aircraft attitude system is designed. Thus, fault-tolerant control of four-rotor aircrafts is realized. By means of the method, probability of air crashes of four-rotor aircrafts is remarkably reduced, and flying reliability and safety of aircrafts are improved.

A plurality of primary beams are formed from a single electron source, the surface charge of a sample is controlled by at least one primary beam, and at the same time, the inspection of the sample is conducted using a primary beam other than this. Also, for an exposure area of the primary beam for surface charge control and an exposure area of the primary beam for the inspection, the surface electric field strength is set individually. Also, the current of the primary beam for surface charge control and the interval between the primary beam for surface charge control and the primary beam for inspection are controlled.

The invention discloses an online knowledge map based on a named entity library, which comprises the following steps: step 1) crawling a webpage and crawling webpage information from an entire internet to obtain an internet data set; step 2) extracting named entities; step 3) searching attribute words, traversing the internet data set in the step 1) and establishing an attribute set related to the named entities; step 4) quantifying the information and a correlation between the attribute words in the attribute set and the named entities; step 5) establishing the knowledge map and establishing a topological structure among the named entities through the correlation between the named entities and the attribute words in the attribute set to form the knowledge map; step 6) updating. The online knowledge map has the benefits that the named entities are extracted from a massive new page text message, a correlation between entity nodes and nodes is automatically established, the knowledge map is established according to knowledge nodes and a correlation among the knowledge nodes, and the updating of the knowledge map can be efficiently realized.

The invention relates to the technical field of the Internet and discloses a live broadcast assistant audio/video processing method and device. The method comprises the steps of collecting anchor audios, background music and special effect audios through a live broadcast assistant audio/video application, carrying out audio processing and integrating the anchor audios, the background music and the special effect audios into an audio stream; collecting live broadcast images through the live broadcast assistant audio/video application, carrying out image processing to generate a video stream; aligning time stamps of the audio stream and the video stream to generate an audio/video stream data packet; and transmitting the audio/video stream data packet to a live broadcast application through a cross-process communication channel. The audios in the live broadcast process are effectively integrated into the audio stream, the time stamps of the audio stream and the video stream are aligned, the audio stream and the video stream are transmitted to the live broadcast application, various audios in the live broadcast process are prevented from mutual interference, and the fusion effect of the live broadcast application for the audios in the live broadcast process is relatively good.

The invention provides a double-effect and triple-effect first-type absorption heat pump with a heat return end and a heat supply end, which belongs to the technical field of absorption heat pumps. A second absorber is sequentially communicated with a second solution pump, a third solution heat exchanger, a first absorber, a first solution pump, a second solution heat exchanger, a first solution heat exchanger and a first generator, the first generator is further sequentially communicated with the first solution heat exchanger, a second generator, the second solution heat exchanger, a third generator, the third solution heat exchanger and a second absorber, the first generator is provided with a steam channel used for communicating with the second generator and the third generator, the second generator is communicated with a condenser via a first throttling valve, the third generator is communicated with the condenser via a second throttling valve, the second generator is provided with a steam channel used for communicating with the condenser, the third generator is provided with a steam channel used for communicating with the first absorber, the condenser is communicated with an evaporator via a third throttling valve, and the evaporator is provided with a steam channel used for communicating with the second absorber, so that the double-effect first-type absorption heat pump with the heat return end and the heat supply end is formed.

The invention relates to an electric power equipment detection algorithm based on a convolution neural network, comprising the following steps of (1) a labelImg tool is used for labeling the visible light image and infrared image of the electric power equipment, and obtaining the label about the electric power equipment in the image; (2) the images and device-level tags in the training set are inputted to the detection model of electric power equipment for training, and update the model parameters by using the gradient descent algorithm of driving quantity to back propagate; (3) in the testingphase, the prediction box is reduced by soft non-maximum suppression, and the prediction box whose confidence level is higher than the threshold value is outputted finally; (4) compared with the current power equipment detection methods, the algorithm can converge and obtain excellent detection performance without fine-tuning on the pre-training model, has excellent robustness for small power equipment, can effectively reduce the phenomenon of frame error and frame leakage, and has high detection accuracy and detection speed to achieve real-time processing.

The embodiment of the invention discloses a satellite precise orbit determination method and device. The method comprises the steps that first observation data of a navigational satellite, determinedby a ground receiver and second observation data of the navigational satellite, determined by a low orbit satellite receiver are acquired; a first observation equation of the ground receiver and a second observation equation of the low orbit satellite receiver are determined; and the first observation equation and the second observation equation are solved according to the first observation data and the second observation data, and accordingly the orbital position of a navigational satellite is determined.

The invention relates to a wireless communication device for implantable medical instruments and belongs to the technical field of implantable medical instruments. The wireless communication device comprises an in-vitro transceiver and implantable in-vivo transceivers, and is characterized in that a communication frequency band covers 401MHz-406MHz and 420MHz-445MHz and is capable of achieving an adaptive frequency hopping function within the frequency band, one in-vitro transceiver can be in simultaneous real-time communication with a plurality of in-vivo transceivers, body penetrating communication distance is longer than 2m, modulation modes are flexible, communication rate and transmission power can be adaptively adjusted, the maximum communication bitrate is not less than 100kbps, and wireless communication can be simultaneously performed with existing wireless charging. The wireless communication device for the implantable medical instruments has the advantages of simple implementation mode, reliable communication processes, high intelligent degree and anti-interference capability, small size, low transmission power, long distance, high speed and the like, is capable of achieving a one-to-many communication function and can be widely applied to various implantable medical instruments.

The embodiment of the invention discloses a database materialized view construction system and method and a system creation method. The system comprises a query load preprocessing module, an offline training module and an online recommendation module. The query load preprocessing module is used for preprocessing an input query load to obtain sub-query representatives; the offline training module is used for training a preset deep learning model and a reinforcement learning model by querying load historical data; the online recommendation module is used for predicting the query cost of a new query obtained after the original query corresponding to each sub-query representation is subjected to view rewriting by using the materialized view corresponding to the sub-query representation througha deep learning model to obtain a newly queried query representation and obtaining the optimal sub-query with the lowest query cost and the corresponding optimal materialized view through the reinforcement learning model. According to the scheme of the embodiment, the redundancy cost of batch query is reduced to a large extent, and convergence of the materialized view approximate optimization process is achieved.

A system and method for enhancing lifetime and throughput in a distributed wireless network is disclosed herein. The method may include sensing, by a first machine, different parameters of at least one neighboring machine; updating, by the first machine, at least one parameter of said first machine based on said sensed parameters of said neighboring machine; generating, by the first machine, a signed-graph on the basis of the updated parameter, wherein said generated graph comprises at least two nodes representing said updated parameter and at least one edge interconnecting said two nodes; iteratively updating, by the first machine, the at least one parameter at different time-scales until convergence is achieved; and communicating, by the first machine, inter-layer updates in individual layers of a transmission protocol stack of the first machine due to said update of at least one parameter.

The invention discloses a double-layer dielectric metasurface-based optical zooming system. The system comprises a first layer of dielectric metasurface and a second layer of dielectric metasurface, wherein both the two layers of dielectric metasurface are formed by a plurality of basic units through splicing; each basic unit comprises a base plate and a cylindrical dielectric column arranged on the base plate; a mapping relationship exists among the diameters of the cylindrical dielectric columns of each layer of dielectric metasurface, the distances from the cylindrical dielectric columns tothe centers of the dielectric metasurface and the angles between the cylindrical dielectric columns and the dielectric metasurface; incident light is incident to pass through the two layers of dielectric metasurface in sequence; the two layers of dielectric metasurface carry out phase modulation on the incident light in sequence for two times, so as to realize a focusing effect for the incident light; and when the relative rotation angles of the first layer of dielectric metasurface and the second layer of dielectric metasurface change relative to an initial state, focusing focal lengths corresponding to the two layers of dielectric metasurface are changed, and the focusing effect of the two layers of dielectric metasurface for the incident light is changed. The zooming system provided bythe invention is capable of realizing zooming according to the sizes of the rotation angles and realizing large-scale zooming.

The present invention relates to the broadband access network and the method of the QoS Assurance. The main technical proposal of the present invention is that a corresponding ARM (access resource manager) is arranged in the broadband access network. Corresponding logical channels are respectively established between a broadband assess server and all users access equipment. The unified management is processed by the ARM (access resource manager) to the broadband resources of all logical channels. So the QoS assurance can be provided to the transmitting business in the broadband access network according to the wideband resource conditions of each logical channel. The present invention can lead a broadband network operator to support the QoS assurance to a real-time service in the broadband access network range and to distribute the broadband resources to the corresponding businesses according to needs. At the same time, in the present invention, the operator can provides more kinds of services through a signal network, reduces the cost owned by the whole network and creates the biggest value.

The invention discloses a backlight module and a display device and belongs to the technical field of display. The backlight module comprises multiple light sources and a quantum dot diaphragm, and excitation light from the light sources excites the quantum dot diaphragm to generate excitation light; the backlight module further comprises three-dimensional reflective sheets, each three-dimensionalreflective sheet includes multiple cavities arranged in array, each cavity is formed by a bottom surface and side surfaces, and the light sources are located on the bottoms surface of the cavities; apartially transmitting and partially light reflecting optical layer is arranged between the light sources and the quantum dot diaphragm, wherein single pass transmittance m of the optical layer to the excitation light is greater than/equal to 0.05 and smaller than/equal to 0.6 when the specific value of the height H of the light sources to the length P of long sides of the cavities is grater than/equal to 0.1 and smaller than/equal to 0.25. By the arrangement, problems that color mixture existing in light emitted from light emitting areas of the backlight module and contrast among the light emitting areas is low are solved, and the contrast among the light emitting areas is increased. The backlight module and the display device are used for providing backlight.

The invention relates to an electromagnetic resonator-based two-dimensional luneberg lens and belongs to the technical field of microwaves. The electromagnetic resonator-based two-dimensional luneberglens comprises n layers of concentric electromagnetic resonator unit modules, wherein each layer of electromagnetic resonator unit module is a circle formed by a plurality of electromagnetic resonator units with the same structure; and each electromagnetic resonator unit comprises a dielectric layer and an etching pattern layer, a metal copper material is adopted by the etching pattern layer andthe etching pattern layer is laminated on the dielectric layer; and the etching pattern layers of the electromagnetic resonator units in different layers of electromagnetic resonator unit modules arethe same in pattern and different in pattern size, and the dielectric layers are identical. The two-dimensional luneberg lens is arranged in a waveguide structure, horizontally polarized electromagnetic waves enter in parallel along one side of the two-dimensional luneberg lens, and an electromagnetic wave convergence effect can be obtained in the 180-degree direction of the incident waves. The electromagnetic resonator-based two-dimensional luneberg lens is achieved through a PCB processing technology, has the characteristics of being easy to process, low in cost and high in repeatability, and can be widely applied to a DOA estimation technology and an antenna beam convergence scene.

The invention provides a Fresnel-dual-lens-unit-based visible light communication receiving antenna design method. According to the method, a reflection Fresnel lens is used as a main optical assembly; and the organic glass PMMA (polymethyl methacrylate) and a PC (polycarbonate) are used as component materials for forming the Fresnel lens. The innovation points of the method are as follows: the Fresnel lens is used for replacing the traditional single refractor; the whole receiving system has advantages of small size, light weight, and low batch production cost low; the structure is simple; and the system can be installed in the indoor space easily. The provided method can be applied to the visible light communication receiving field.

The invention is used for solving the issue of traffic congestion brought by compression and encryption at iNodeB in evolving network architecture. In the invention, the 'IN' of RAN server of currently-used evolving network is expanded into 'IN CPS' and 'IN UPS', the 'IN CPS' is used in implementing the convergence and centralized process functions for user plane data transmission, including user plane header compression and encryption; the 'IN UPS' has same function of RAN server control plane.

The invention discloses a cooperative learning and formation control method for an isomorphic multi-unmanned surface vehicle system. The cooperative learning and formation control method proposes a distributed cooperative learning control method based on a communication connection topological graph for a plurality of all-drive unmanned surface vehicle systems having identical structures, and solves the problem of collision and connection maintenance between the isomorphic unmanned surface vehicles maintaining communication. The cooperative learning and formation control method comprises the steps of: establishing a dynamic model of unmanned surface vehicles; designing an error based on a graph theory between the unmanned surface vehicles maintaining communication; designing an error conversion function satisfying preset performance; designing a virtual controller based on a dynamic surface control technology; designing a weight update rate of a radial basis function (RBF) neural network; and designing a formation controller and an experience-based controller. The cooperative learning and formation control method satisfying connection maintenance can ensure that two unmanned surface vehicles always keep a safe distance and are within a communication connection range at any time thereafter if the two unmanned surface vehicles maintain communication at an initial moment.

The embodiment of the invention provides a selection method for a relay station and station equipment. The method comprises the following steps that: first station equipment receives beacon signals from a plurality of pieces of second station equipment, wherein the beacon signal transmitted by each piece of second station equipment carries the position attribute of the second station equipment, the position attribute of the second station equipment is used for indicating the position of the second station equipment, and the second station equipment is different from the first station equipment; and the first station equipment selects one piece of station equipment serving as a relay station of the first station equipment from the second station equipment according to own position attribute and the position attribute carried by each beacon signal. According to the technical scheme, the relay station is selected according to the position attribute, so that network sharing stability is improved, and the waste of network resources is reduced.

An embodiment of the invention discloses an integrated method and an integrated system for approval processes. The integrated method and the integrated system for the approval processes have functions of fully realizing connection between an ERP approval process and an OA approval process, realizing full course automation, facilitating a user for quickly finishing approval by a user, and improving user experience. The integrated method according to an embodiment of the invention comprises the steps of transmitting a first document to the OA approval process through a first interface which is preset in an OA system when an ERP system confirms a fact that the first document which is approved in the ERP approval process arrives a preset approval node; acquiring the model and the data of the first document by the OA system through a second interface which is preset in the ERP system, and converting the first document to a second document which can be approved in the OA approval process through the model and the data of the first document; performing approval on the second document by the OA system through the OA approval process, and acquiring the approval result of the second document, and transmitting the approval result to the ERP system through a third interface which is preset in the ERP system.

The invention provides an OCA detection device. The OCA detection device comprises a rotary table, five stations are arranged along the periphery of the rotary table, and the five stations are correspondingly provided with a feeding unit, a first detection unit, a second detection unit, a third detection unit and a discharging unit; the rotary table comprises a rotating disc and a carrier uniformly distributed on the periphery of the disc, the carrier extends along the radial direction of the disk from the edge of the disk to the direction away from the center of the disk; the first detectionunit comprises a first camera and a first surface light source, the first camera is located above the rotary table, the first surface light source is located below the rotary table; the second detection unit comprises a second camera capable of scanning along the radial line of the rotary table and a coaxial light source, the coaxial light source is arranged above the rotary table, and the secondcamera is arranged above the coaxial light source; and the third detection unit comprises a third camera and a second surface light source, the second surface light source is arranged above the rotarytable, and the third camera is arranged above the second light source. The testing device is used for detecting the defects of glue shortage, bubble, concave point and convex point, deformation and being crushed of OCA products.

The invention discloses an on-site absorption spectrum gas analysis system. The system comprises a light transmitting unit, a light receiving unit and a signal analysis unit, wherein the light transmitting unit comprises a light source and a converging lens. The system is characterized in that: one end of the converging lens back to the light source is provided with an arc surface; the arc surface end of the converging lens is provided with a calibration chamber of which one end is provided with an opening and the other end is closed; the opening end is hermetically connected with the converging lens; an A-A section on the middle part of the converging lens is in any geometrical shape; and light emitted by the light source passes through the converging lens and the calibration chamber and enters a medium to be measured. The system has the advantages of real-time on-line calibration, high measuring accuracy and measuring sensitivity, simple and reliable structure, easily realized explosion isolation function, no need of blowing, low sealing requirement and the like, and is convenient to manufacture.