332results about How to "Eliminate limitations" patented technology

A thermostat control system for monitoring and controlling environmental characteristics of a building includes a base station unit and a remote access unit continuously interfacing through instant wireless private direct connectivity. The system also includes a plurality of sensors that measure the environmental characteristics and provide the thermostat unit with the measurements.

A point-to-multipoint passive optical network transmits downstream data from an optical line terminal (OLT) to multiple optical network units (ONUs) in variable-length packets and upstream data from the ONUs to the OLT in variable-length packets utilizing time division multiplexing to avoid transmission collisions. In an embodiment, the variable-length downstream packets and the variable-length upstream packets are formatted according to IEEE 802.3. In an embodiment, the length of the variable-length downstream and upstream packets is related to the length of Internet protocol (IP) datagrams carried within the packets.

The invention discloses a self-managed micro-service architecture and a service method thereof. The micro-service architecture comprises two aspects including service orchestration and configuration sharing and service discovery; and the service method comprises the following steps of: deploying and discovering components; monitoring; automatically telescoping; managing health; self-repairing; and componentizing single services. The self-managed micro-service architecture disclosed by the invention is a distributed frame naturally integrating the optimal orchestration and service self-management; self-management and application deployment are associated; the essential limitation is eliminated; a leader node is elected by utilizing a consistency algorithm; other nodes in a cluster are managed; simultaneously, the common optimal cloud orchestration practice and distributed configuration are integrated; and combinable micro-service self-management and micro-service architecture applications can be provided.

A method for producing a high quality useful layer of semiconductor material on a substrate. The method includes implanting at least two different atomic species into a face of a donor substrate to a controlled mean implantation depth to form a weakened zone therein and to define a useful layer. The implanting step is conducted to minimize low-frequency roughness at the weakened zone. Next, the method includes bonding a support substrate to the face of the donor substrate, and detaching the useful layer from the donor substrate along the weakened zone. A structure is thus formed that includes the useful layer on the support substrate with the useful layer presenting a surface for further processing. The technique also includes thermally treating the structure to minimize high-frequency roughness of the surface of the useful layer. The result is a surface having sufficient smoothness so that chemical mechanical polishing (CMP) is not needed.

The invention discloses a method for identifying and detecting the fire flame in a big space, including: pretreating the input video streams, performing movement detection for the video streams to obtain the movement pixel, performing color detection for the video streams to obtain the pixel with the flame characteristic color, performing frequency domain analysis for all the pixels according with the movement detection and the color detection flame characteristic, searching the communicating areas formed by mutually connecting the pixels according with the same characteristic, calculating the circumferences and the areas of the obtained communicating areas to perform the shape analysis, performing the area change variable analysis for each communicating area, at last judging whether the fire happens. In the method, the real flame in the big space is distinguished from the flashy car light, so that the device is not only for the flame detection in the tunnel, but also used in the big-space fire flame detecting sites such as a gymnasium, a museum, a warehouse and the like.

The invention discloses a hybrid nuclear power plant fault diagnosis method, belonging to the technical field of fault diagnosis. The method comprises a step of collecting operation parameters in a diagnosed system and transmitting the parameters to an established mechanism simulation model, a step of calculating a residual error on real-time data and a corresponding parameter obtained by simulation model calculation, a step of judging a result or result set of a fault type when the calculated residual error exceeds a limit value, a step of adding a diagnosis result into the simulation model to carry out fault verification, a step of selecting a part of operation parameters obtained by measurement as evaluation parameters, and determining a data analysis model of a Mahalanobis distance function for fault degree evaluation, a step of calculating a Mahalanobis distance value, and establishing evaluation curves of different fault modes, and a step of calculating the Mahalanobis distance function distance value of actual fault data by using the operation data of the diagnosed system after failure, and establishing evaluation curves under different fault degrees to carry out match analysis to complete the quantitative assessment of a fault degree.

The invention relates to an air bridge and an automatic abutting method therefor. The air bridge comprises an airplane connector, a lifting mechanism, a travelling mechanism and an automatic abutting device. The automatic abutting device comprises an image data acquisition unit, a preprocessing unit, a database, a visual identification and positioning unit, a motion control unit and a bridge control system. When an airplane parks at a parking position and the air bridge automatically abuts at an initial position, the automatic abutting device is started; image data of a hatch door of the airplane, included in the image data acquisition unit, is preprocessed; an image meeting the features of the hatch door of the airplane is recognized from the processed image data; information about the position of the airplane connector relative to the hatch door is calculated; travel control information is generated according to the information about the relative position; the relative position information and the travel control information are encoded and transmitted to the bridge control system; finally, the received information is decoded, the travel control information is executed, and the air bridge is driven to move until automatically abutting to the hatch door.

The invention discloses an effective stress level test device and method of a vertical prestressed reinforcement. An ARM (Advanced RISC Machines) processor is connected with an ultrasonic pulse generator; a pulse signal emitted from the ultrasonic pulse generator is transmitted to an ultrasonic transducer via a boosted circuit and a transmitter circuit; the ultrasonic transducer transmits the ultrasonic wave to a data register via a programmable filter, a programmable amplifier and an A/D (analog-to-digital) converter; collected signals are sent to a DSP (Digital Signal Processor) by the data register; the DSP stores the signals in an RAM (Random-Access Memory) storage area; the ARM processor is connected with a memory, a keyboard, a display, the programmable amplifier, the programmable filter, the RAM storage area and a temperature measurement circuit; and the temperature measurement circuit is connected with a temperature sensor. The device has the characteristics of no loss, high speed, high accuracy and low cost, especially can quantify the influence of temperature on a stress measurement result, can correct the stress level test error of the vertical prestressed reinforcement so as to obtain the effective stress level value of the vertical prestressed reinforcement with the engineering accuracy.

The invention discloses a transformer fault diagnosis method based on feature information quantization and weighted KNN, comprising the following steps: S1, dividing sample data into a training set and a test set; S2, inputting the training set, and performing preprocessing on the sample data; S3, based on principal component analysis (PCA) and grey relational analysis (GRA), performing quantization on fault feature information; S4, introducing a particle swarm optimization algorithm for optimizing a weighted KNN categorization algorithm, according to a true fault category, training a sample in a standardized fault feature matrix, and obtaining a power transformer fault diagnosis model, thus categorization on a power transformer fault is realized; and S5, inputting the test set into the power transformer fault diagnosis model, and obtaining a diagnosis result, thus diagnosis on the power transformer fault is realized. The transformer fault diagnosis method disclosed by the invention solves the problems that processing efficiency is low, model training is difficult and limitation exists in the prior art.

The invention discloses an optimal two-vector combination-based model predictive control method and system. The method is applied to a permanent-magnet synchronous motor control system driven by a three-phase two-level inverter. A model predictive current control strategy is adopted, all two-vector combinations and resultant vector sets obtained under action time are considered at the same time, and a cost function is inspected and an optimal resultant vector is selected from all to-be-selected sets. In order to simplify the optimization process, an equivalent voltage equation is given, a sector transformation method is provided and to-be-selected two-vector combination sets are transformed into multiple fixed line segments; and a fast algorithm is given and partial complicated calculation is transformed to offline execution, so that the real-time calculated amount of the novel method is effectively reduced. The model predictive control method disclosed by the invention is simple in structure, small in real-time calculated amount and easy to implement; and the response speed of a motor is high, current ripples and distortion are small, the switching frequency is low and the dynamic and static performance of the system is excellent.

The invention relates to an on-line tracking method for designated pedestrian under a cross-camera scene, which can create and initialize a tracker according to the obtained basic information by demarcating a pedestrian of interest in the visual field area of any camera; when a pedestrian is appointed to leave the view area of the current camera, the pedestrian state is set as a hanging detection,waiting for the next step of pedestrian data correlation operation; when a new pedestrian enters into the tracking visual field area, judge whether the pedestrian in the hanging state and the new target pedestrian is the same pedestrian through an association algorithm; according to the data correlation algorithm based on depth learning, similar values of two target pedestrians are obtained, andwhen the similarity value is greater than a threshold value, the corresponding tracker is updated to obtain a complete movement track of the target pedestrian of interest in the whole camera network.The invention provides an on-line tracking method for designated pedestrian under a cross-camera scene, and the practicability and the accuracy of the target tracking of a non-overlapping field-of-view area under a multi-camera scene is increased.

The invention discloses an on-satellite all-light path radioactive calibrating method, including high accuracy spectrum radioactive brightness meter satellite-carried multi-spectrum camera and bracket installed on a satellite platform, where the bracket is installed with motor-driven diffuse reflecting white plate, the above brightness meter and the satellite-carried multi-spectrum camera are installed on the same plane on the satellite platform and the directions of their light paths are the same, it uses a rotating motor to drive the above white plate rotationally move rightward to avoid the light path of the multi-spectrum camera, and here, this camera can relatively obverse earth object; once the white plate rotationally restores to actual shown position, it can realize all-light path calibration for the multi-spectrum camera. It can realize high accuracy calibration for on-satellite camera response by uncertainty less than 3%.

An automatic system (100) for preserving samples at a controlled temperature, comprising at least one temperature-controlled adiabatic preservation chamber (1) with a temperature control device (3) and containing a A set of trays (9) for storing samples (19), a Cartesian robot system (4) equipped with a pick-up device (18) is contained in an upper chamber ( 2), in the chamber (2) the Cartesian system (4) moves the sample between the I/O drawer (20) and the aforementioned set of trays (9) through the control access (7) ( 19). The combined and synchronized movement of the robotic device (4) and each individual disk of the set of disks enables access to each storage location. The management of the automatic system (100) device is controlled by an N/C system driven by a dedicated management SW.

The embodiment of the invention provides an intelligent visual ship perception system based on a cloud platform and a data processing method. The system comprises an information acquisition module, afirst information sending module, a local cloud platform data fusion processing module; a second information sending module and an information visualization module, Video information and AIS information acquired by the information acquisition module are sent to the local cloud platform data fusion processing module through the first information sending module. The local cloud platform data fusionprocessing module can carry out target ship identification and target ship and ship AIS information matching tracking on ship operation video information so as to obtain matched target ship information, and the matched target ship information is sent to the information visualization module through the second information sending module to be displayed. According to the invention, the method achieves the accurate perception of the actual state of the ship, and improves the recognition and matching accuracy.

The invention discloses a composite insulator electric field optimization method based on a multi-target genetic algorithm. The method comprises steps as follows: 1) solving an electrostatic field open domain problem; 2) establishing a composite insulator geometric model; 3) performing numerical computation on the composite insulator electric field intensity in Maxwell software; 4) in order to break through the limitation of a Maxwell software optimization module, adopting the VB (visual basic) script of the Maxwell software to realize data connection of the Maxwell software and MATLAB software; 5) in the MATLAB software, optimizing shed radiuses with the multi-target genetic algorithm; 6) obtaining optimized composite insulator electric field distribution. According to the method, the field intensity Range_E minimization and the field intensity gradient Max_GradE minimization are taken as multiple optimization targets, and large, medium and small shed radiuses of a composite insulator are optimized, so that the composite insulator electric field distribution is more uniform.

The invention discloses a circuit board comprising a blind hole and a manufacturing method of the circuit board and belongs to the technical field of printed circuit boards. The manufacturing method comprises the steps that the processes of daughter board hole drilling, electroless copper plating, board plating, hole plating, inner layer pattern manufacturing, brownification, resin hole blocking, board drying and daughter board lamination. In the resin hole blocking process, a pre-manufactured hole blocking aluminum piece is arranged on the surface of a daughter board in a covering mode, a window-opening zone corresponding to a zone which needs resin hole blocking on the daughter board is arranged on the hole blocking aluminum piece, and then resin hole blocking is carried out. Accordingly, the problem that a whole board face is full of resin is avoided, ceramic board grinding is of no need, and the problem that surplus resin stays in concave parts on the board face or base materials are exposed out of the board face is solved. The manufacturing method of a resin blocking hole is suitable for blind hole resin filling of various boards, and limitation on boards of the resin blocking hole is removed.

The invention discloses an exhaustive swimming test device for simulating special military environments, which comprises a cabinet as well as a natural light simulation system, a lightning and battlefield audible-visible simulation system, a temperature regulation system, a signal acquisition system, a swimming pool and a control unit which are arranged in the cabinet. The device disclosed by the invention can carry out intelligent regulation on temperature and humidity, and carry out all-true simulation on extreme weather conditions such as high temperature, high humidity, low temperature and the like; meanwhile, through combining the audible-visible simulation system of the device, a fierce war stress psychological environment can be built, and animal behaviors can be recorded clearly through configuring a software system; therefore, the device disclosed by the invention can simulate severe natural environments, normal natural environments as well as war environments, so that the device has good universality and provides a possibility for acquiring the physiological parameters of big and small mice in exhaustive swimming tests in various different environments, thereby eliminating the limitations existing in test devices in the prior art, simulating the comprehensive stress factors of war conditions better, and facilitating the acquisition of convincing test results.

The invention discloses a method for designing a centrifugal compressor and relates to the field of centrifugal compressor design. The main purpose is to eliminate the limitation of the model level selected based on experience, and to improve the efficiency of the centrifugal compressor designed and the range of broadened working conditions. The method includes selecting a model level combinationfrom a preset model level database according to design input parameters of the centrifugal compressor, wherein the preset model level database stores various tested model level data; according to themodel level combination and modeling rules, performing iterative computation on gas property parameters corresponding to inlet and outlet states at each level of the centrifugal compressor; accordingto the gas property parameters, performing iterative computation on performance parameters corresponding to the centrifugal compressor; according to the performance parameters, determining whether themodel level combination conforms to a preset optimal rule; if yes, generating a design scheme of the centrifugal compressor; and if not, reselecting the model level combination and performing calculation, until the model level combination conforms to the preset optimal rule. The method is suitable for designing the centrifugal compressor.

The invention relates to the technical field of location and detection of tumor cells, particularly to a PH and anoxia dual-response tumor cell location naphthalimide rate fluorescent probe. The probe takes naphthalimide as a parent to introduce active groups of nitrobenzyl and morpholine for detecting anoxia and pH respectively, and the experiment proves that the effect of detecting nitroreductase of the probe under the acid condition is better than that under the neutral condition, therefore, the probe eliminates the limit that the conventional anoxia probe can only detect the nitroreductase, the imaging accuracy of the tumor cell is greatly improved, a new idea is provided for the treatment and detection of tumors, and the application prospect is quite broad.

The disclosed embodiments provide a system that facilitates the execution of a print job. During operation, the system obtains a set of document-processing capabilities from a printer associated with the print job and obtains print data for the print job. Next, the system selects a set of document attributes for the print job based on the document-processing capabilities and the print data, wherein the set of document attributes comprises a document format and a document size. Finally, the system configures the print data to conform to the document attributes to enable processing of the print job by the printer.

A stator designed to be placed radially in a flow which passes through one or more rotors which share the same axis of rotation, with a leading edge and a trailing edge. The leading edge and trailing edge are connected by a lower face and an upper face, wherein at least one of the faces of the stator has radial undulations which extend axially from the leading edge to the trailing edge. The radial undulations can have at least two bosses in the same azimuth direction, the amplitude of which is at least one centimeter on at least part of the axial length of the stator. A propulsion assembly formed by the rotor and the stator, and to a turbine engine comprising such assembly is also provided.

A height adjustment mechanism disposed in a body is provided, which includes two axle seats disposed on the body, a spindle, two support parts fixed on the spindle, and a stop component. Each of the support parts has a fitting hole, and the spindle is rotatably disposed in the body, and drives the support parts to rotate simultaneously, the spindle has a positioning part having a plurality of grooves, and each of the two support parts has a plurality of asymmetric end surfaces. Any one of the end surfaces is selectively pressed against a plane, such that different height differences exist between the body and the plane. The stop component is corresponding to the positioning part, and is movably disposed in the body, and the stop component moves between a stop position that is clamped in the grooves and a release position where the spindle is allowed to rotate freely.