1679 results about "Maintainability" patented technology

A system and method lets a user create or import ontologies and create databases and related application software. These databases can be specially tuned to suit a particular need, and each comes with the same error-detection rules to keep the data clean. Such databases may be searched based on meaning, rather than on words-that-begin-with-something. And multiple databases, if generated from the same basic ontology can communicate with each other without any additional effort. Ontology management and generation tools enable enterprises to create databases that use ontologies to improve data integration, maintainability, quality, and flexibility. Only the relevant aspects of the ontology are targeted, extracting out a sub-model that has the power of the full ontology restricted to objects of interest for the application domain. To increase performance and add desired database characteristics, this sub-model is translated into a database system. Java-based object-oriented and relational application program interfaces (APIs) are then generated from this translation, providing application developers with an API that exactly reflects the entity types and relations (classes and methods) that are represented by the database. This generation approach essentially turns the ontology into a set of integrated and efficient databases.

A rotary sensor that outputs two analog signals, such as one sine wave and one cosine wave and has multiple periods within one period of the electrical angle of a motor is employed. The motor is energized at each position for a specified length of time upon its startup by using multiple electrical angles corresponding to the multiple candidate absolute angles obtained from the rotary sensor signal as the initial position of the motor, and the electrical angle at which the motor acceleration becomes maximum is determined as the absolute angle. While the motor drive is in operation, on the other hand, the phase difference Δθ between the phase of the motor at the counter electromotive voltage and the control phase is directly computed from the parameters of the motor, sensed current, voltage command and angle speed so as to correct the shifted position. A high-efficiency motor drive unit with improved maintainability of rotary sensor and improved accuracy of sensing the magnet pole position of a permanent magnet synchronous motor that accelerates and decelerates very quickly in a wide range of speed is realized.

A system and method for parsing an electronic media database structure to produce tagged data that preserves the content, links, and electronic media structure. In particular, HyperText Markup Language (HTML) data is generated as an Interactive Electronic Technical Manual (IETM) (home page) linked into a relative structure of Web pages to support IETM deployment. An extraction process assesses the functionality associated with each node designated for presentation and builds a virtual Web, based on attributes stored in the IETM database. A series of Web pages with links that hierarchically presents IETM data at run time is produced. The method supports a data warehousing strategy that converts any data type eligible within the relational database. This expands support across multiple types of technical and engineering data. The preferred implementation utilizes a relative addressed pure HTML solution viewable in standard Web browsers. This open system implementation is cross platform and infrastructure independent, requiring no special server software. Retaining the hierarchical structure dictated by the relational database in HTML output enhances the supportability and maintainability of the Web implementation. Updates to this Web implementation can be incrementally applied within the hierarchy (small sections of data) or the entire logical sections of Web data.

A method for executing on a first computer an application having an installed image prepared on a second computer, wherein the installed image is virtually installed on the first computer, is disclosed. The method includes emulating on the first computer a native environment of the second computer. The method further includes detecting an operation of the application upon data, wherein the operation requires an operation on data located on the first computer, and wherein a copy of the data is located in the virtually installed image. The method further includes directing the operation of the application to operate on the data located in the virtually installed image.

[OBJECTS AND PROBLEMS] Relating to a mist generator capable of emitting any of chemical substances used in life, such as perfumes, pharmaceuticals and pesticides, in the form of fog or vapor. An object of the invention is to attain means for efficiently atomizing liquid, means for easily and rapidly switching the type of chemical substance emitted and a compact apparatus of good maintainability. [MEANS FOR SOLVING PROBLEMS] An apparatus comprises an ultrasonic transducer; an ultrasonic propagation medium disposed so as to fill a plane of vibration of the transducer; liquid retaining means disposed so as to be in contact with an end face of the medium; and an ultrasonic focusing reflecting mechanism (concave reflection mirror) disposed in an ultrasonic propagation path, thereby the apparatus attains discharging into air and atomization of the liquid by means of ultrasonic waves. Atomization efficiency is enhanced by the use of an ultrasonic reflection tube, and mist emission is carried out. Use is made of a compact liquid container equipped at its bottom with an ultrasonic transmission membrane. Various types of liquids can be atomized by changing the direction of ultrasonic course. Mist can be emitted by means of a thermal current as heating means. IC tag is attached to the liquid retaining means or liquid injection means.

A wireless access system and method are provided by which the wireless communications area covered by a single access point is increased while maintaining the maintainability of the access point, minimizing an increase in system cost, and avoiding the hidden terminal problem. An access point (12) and terminals (16a to 16c) are connected via a master station (13), an optical multiplexing/demultiplexing section (14), and slave stations (15a to 15c). A downstream signal to the terminals (16a to 16c) from the access point (12) is transmitted such that the master station (13) outputs the downstream signal to each of the slave stations (15a to 15c) in a distributed manner through the optical multiplexing/demultiplexing section (14). An upstream signal to the access point (12) from any one of the terminals (for example, 16a) is transmitted to the master station (13) through a slave station (for example, 15a) and the optical multiplexing/demultiplexing section (14), and also sent to all other slave stations (for example, 15b and 15c) through the master station (13) or the optical multiplexing/demultiplexing section (14).

The invention provides a Ka-band tilt-structure active phased array antenna, so as to provide an active phased array antenna which is high in integration density and can improve maintainability and interchangeability. According to the technical scheme, one path of RF signals transmitted by a transmitting signal processing terminal are transmitted to a power distribution/synthesis network (5) via a signal interface and a radio frequency interface to be divided into M paths of signals; according to information of an azimuth angle and a pitch angle of the phased array antenna provided by the transmitting signal processing terminal in real time, a beam controller (4) calculates and obtains beam pointing of the phased array antenna in real time through an FPGA; the beam pointing of the phased array antenna is converted into phase data needed by each array element under control of the beam controller (4); the data are transmitted to tilt-type TR assembly sub array modules in N channels respectively via a high and low-frequency interconnected multi-core high and low-frequency socket, and under control of the beam controller, M*N paths of signals are transmitted to an antenna array, and thus signal transmission is completed, and synchronous electric control scanning of beams transmitted by the phased array antenna is realized.

The invention relates to a circuit device used for providing distant indication for conditions of a distribution network and carrying out distant control on a switching device in the distribution network, in particular to an integrated monitoring system information platform for a transformer substation. The integrated monitoring system information platform comprises an integrated information platform body and a station level advanced application module. The integrated information platform body comprises an application-independent graphic base system, a real-time database based on the unified modeling technology, a data normalization module, a data verification module, a data service module, a file service module and a historical library storage service module. The station level advanced application module comprises a graphic, model and library integrated module, a source side maintenance module, a primary equipment status visualization module and a one-button sequential control module. According to the integrated monitoring system information platform, by arranging and integrating functions of various subsystems and carrying out data structure reconstitution on the unified platform, the use ratio and interactivity of data are improved, the reliability, integration and maintainability of the system are improved, and new functional subsystems can have access to the transformer substation conveniently.

The present invention discloses an integrated universal simulation test system for electric network scheduling and electric quantity collection, a telemechanical terminal is connected with a test control device through an instation network, an electrical energy remote terminal is connected with a plurality of electric energy meters. The simulation test system is provided with a portable computer, and has a function of processing the remote measurement, remote signaling, remote control data of an automatic SCADA system and electric energy meter data of a electric quantity collection terminal simultaneously or separately; a specification analysis function of the automatic SCADA system and electric quantity collection system; the specification is an usual specification, or is added with a plug-in card mode. By means of the technical scheme, the system has stable operation and perfect functions; the system is portable and is flexible to be employed; the system has high reliability and well expandability, openness, compatibility, and excellent maintainability and easytouse; it is capable of expanding and modifying the specification expediently, and it is capable of plugging and playing.

The invention discloses a method for processing data in online business processing, which comprises the following steps: a data partitioning field of a target data table is confirmed according to a business characteristic; and the target data table is divided into a plurality of subtables according to the data partitioning field. The invention uses the method that the core data table in an online business processing system is divided into a plurality of subtables to enable the data amount of the subtables after division to be lower than that of the original core data table. When DDL operation is carried out to the subtables, the occupied space of the temporary table is small, and blocked talks are few, thus the pressure born by the system is greatly reduced, and the maintainability and the manageability of the core data table of the database are improved.

A compiler has the capability to selectively compile individual portions of a compilable code module for optimum execution performance or for serviceability. In one aspect, individual portions, such as procedures (being less than the entire module) are selectively optimized. In another aspect, debug activity data is used for determining whether or not to optimize compiled code. It is optionally possible to support one or more levels of partial selective optimization.

The present invention relates to a system and methodology to reduce size, weight and cost, improve data processing rates and serviceability, and accommodate higher I/O multi-chip modules (MCMs) for printed circuit board (PCB) assemblies employed in the electronics industry. This is accomplished by selecting low cost, pre-assembled, plastic chip type MCMs for constructing a daughter card where the daughter card material can accommodate high density lines and spaces. Optical interconnects are employed between the daughter card and the motherboard to provide a high speed interface that is substantially not effected by contaminates or limitations associated with electrical lead wires and solder bonds. The result is a high performance card that meets current and projected future demands in signal processing.

The invention discloses a one-layer network data processing method suitable for an intelligent substation. The one-layer network data processing method suitable for the intelligent substation is characterized in that preprocessing of all kinds of network message in the intelligent substation is achieved with a field programmable gate array (FPGA) module adopting FPGA technology, a time-stamp is stamped on the FPGA module as soon as the message enters into an measurement and control (MAC) controller and is stored with the message, network storm restraint, storage and message analysis are available, EtherType domain is distinguished, packet and classified processing is conducted, and meanwhile priority control and real-time transmitting of the message are achieved. The one-layer network data processing method for the intelligent substation has the advantages that realization of intelligent devices in the intelligent substation is simplified, reliability is strengthened, systematic manufacturing cost is reduced and maintainability of the system is optimized.

A simulation process information modeling and maintaining method based on the product structure tree, belonging to the technical field of information integration technology, is characterized in that: based on constructing a product data library, a simulation process library and a simulation data library, setting service logic processing packets for a product structure tree management module, a simulation process information management module and a simulation non-structure tree information maintenance module on an application server; and building a dynamic JSP page in a presentation layer respectively for a server-side and a client-side to modulate and browse. The invention solves the problems of effective organization and management of the simulation information and the integration with a PDM system, and ensures the data integrity, so as to keep the logic relationship in line between the simulation behavior and the simulation data, thereby meeting the special requirement of simulation data management. The invention also has the advantages of platform independence, high-efficient operation, expandability and maintainability.

The unit comprises databank module, interprocess communication module, high reliability module, debugging module, task dispatching module, expension protocol module, clock module, internal memory module and multiintertask communication module. The unit not only provides an operation and development platform with strong function for system software in top large-scale of embedded type to realize independence of top and bottom layers and to increase portability of top application code, but also can collectively transfer the function of some universal modules in top application software into the virtulizer for realization through intermediate component contained with generality in the virtualizer.

To improve the maintainability of a virtual machine system, there is provided a mechanism capable of appropriately reporting a failure that occurs in a dedicated PCI device, in a shared PCI device, or in a virtual PCI device. A device for transferring PCI device configuration information between a failure monitoring application and a hypervisor that monitors a PCI device failure is prepared, and the failure monitoring application is operated in a user virtual machine and in a control virtual machine. Based on the above-described PCI device configuration information, the failure monitoring application operating in the user virtual machine monitors a dedicated PCI device failure and a virtual PCI device failure, and the failure monitoring application operating in the control virtual machine monitors a shared PCI device failure, respectively, thereby appropriately reporting a failure of the dedicated PCI device, the shared PCI device, or the virtual PCI device without duplication.

The invention relates to a method and a system for building a big data distributed log. The method comprises the following steps that: 1, a log transmission sub system receives log data from a service system, generates a UUID (Universally Unique Identifier) for each piece of received log data, and sends the log data with the UUID to a log storage sub system through a plurality of nodes after the load balance; 2, the log storage system receives the log data, and stores the log data in a horizontal expansion mode; and 3, a mass log processing sub system extracts the log data stored in the log storage sub system, uses a MapReduce algorithm to regularly perform mass pre-processing on the log data, and generates a report by the hour and a report by the day to be required by an external service report system. The method and the system have the advantage that the requirements on the reliability, the real-time performance, the high performance, the high expandability and the maintainability of a log system under the big data condition can be met.

The invention provides a distributed real-time transcoding method and a distributed real-time transcoding system. Video source files are logically partitioned by a source file server, and partitions and partition information are transmitted to a task database. A transcoding server cluster acquires source files to be transcoded in real time and performs transcoding, and an object file server receives transcoded data sent by the transcoding server cluster in real time and merges the files into an object file. The expandability, the fault tolerance and the maintainability of the system are improved to a large extent, and the transcoding time of a file coding format is greatly shortened.

A temperature control apparatus where it is easy to replace a heat exchange unit to enhance the maintainability and the space efficiency and which can absorb the thermal expansion/shrinkage of a heat exchanger is provided. The temperature control apparatus has a heat exchanger 11 with a passage 31 for passing a fluid; a connecting pipe 21 connected to the passage of the heat exchanger; a passage block 16 with a passage for passing the fluid to the heat exchanger; a relay block 15 for forming a passage between the passage of the passage block and the connecting pipe; and sealing means 14 for connecting the connecting pipe movably to the passage of the relay block. In the temperature control apparatus, the length of the connecting pipe 21 is made substantially equal to or slightly shorter than the spacing between the heat exchanger 11 and the passage block 16.

The invention provides an AV (audio/video) encoding and decoding device, comprising a decoding module, a playing module, a conversion control module and an encoding module. The decoding module is used for importing a media file and calling a corresponding decoder to decode the media file, and the playing module is used for playing decoded AV data. The conversion control module is used for carrying out relevant processing on the decoded AV data, including the processing of scaling and effect adding on video resolution ratio according to encoding parameters, the processing of frame repeating and losing according to the frame rate and the time stamp, the processing of sampling rate conversion on audio data, the processing of discarding or silencing data filling on the audio data according to the data volume and the time stamp, and the processing of connecting a plurality of media files into one. The encoding module is used for calling a corresponding encoder and a media file synthesizer to generate a multimedia file in the specified format and with relevant parameters. The invention lowers the dependence of a user system environment, and leads software to be controllable in quality and have strong maintainability.

The invention discloses a data processing method, and relates to the technical field of computers. The method comprises the steps as follows: an internal check result data sheet is acquired from a first server system; transaction data files generated by a second server are acquired; the transaction data files are collected by taking the second server which the transaction data files belong to as the dimensionality; each item of recorded data in the collected transaction data files is converted into each item of conversion data in a first data sheet matched with fields of the internal check data sheet according to a format conversion rule corresponding to the second server; each item of to-be-checked data in the first data sheet and the internal check result data sheet are checked; to-be-checked data which don't meet the requirements of the check condition are inserted into a first external check error sheet, so that check error recording is performed; and to-be-checked data which meet the requirements of the check condition are inserted into a first external check success sheet, so that check success recording is performed. The data processing method and the data processing device have the benefits as follows: the data check logic is simplified, the maintainability and the system robustness are enhanced, and the labor cost is reduced.

In a storage system that includes multiple disk drives, the disk drive packaging density is increased, and maintainability and serviceability, as well as cooling performance, are improved. The storage system includes multiple racks, multiple disk drives and multiple cooling devices. The multiple racks are arranged to form a substantially polygonal cylinder-shaped central space used to enable maintenance work to be carried out. Furthermore, an entrance area for a worker to enter the central space is formed between a first rack and a second rack among the multiple racks. The multiple disk drives are detachably mounted to one side of inside and outside of the multiple racks, and are arranged to form a first surface in each of the multiple racks. The multiple cooling devices are arranged to form a second surface in each of the multiple racks. The second surface is substantially parallel to the first surface.

The invention provides a dynamic micro-service calling method and device of multi-language cloud compiling. The dynamic micro-service calling method comprises the following steps: after transmitting calling information of a micro-service of a user to a gateway by a terminal, judging whether the micro-service exists in a server or not by the gateway; if so, routing a calling request to the server so that the server executes a corresponding task according to the calling request; and feeding a result of the executed task back to the terminal. The called micro-service is a function point which is independent to a whole business system and can realize a pre-set function, but not the whole business system, so that the pre-set function can be realized through calling the current available micro-service when the business system is upgraded or has a fault, and the whole business system does not need to be called. The problem that a business finished by the business system cannot be normally operated when the business system is upgraded or has the fault is solved, and the flexibility, openness, maintainability and scalability of system function extension are effectively improved.

The invention provides a session management method of Web application program, obtaining the request that user end sends to Web application, determining real-time refresh request and user actively sent access request in the obtained request, at any time after the user active access request or at the time of the next user active access request, calculating the interval between the adjacent user active access requests, or calculating the interval between the time of the user active access request and the current time, determining wheter the calculated time interval exceeds the preset overtime interval: if yes, determining the session overtime and ending the session, and eliminating session information. And the invention also provides a session management device of Web application program. The invention makes session management with respect to the user request, having high availability, reliability and maintainability.

The invention relates to a LoRa core network system and a realization method. According to functions of designed gateway, network management server, application management server, data distribution server and database server, a task of operating and managing a LoRa network can be finished. The designed application management server based on Nginx, TCP connection is taken over by Nginx, and parameters of request service are borne by a body in an HTTP message. A service request module is docked with an Nginx module. The realization complexity resulting from managing the TCP connection by an Epoll model is avoided, the system expansibility is improved, and the maintainability is relatively high. A request preprocessing mode accesses the rapid processing and blacklist filtering LoRa network based on a UDP, requests are rapidly transmitted to the data distribution server through the UDP, through blacklist filtering, illegal requests are prevented from entering the application management server through the data distribution server, and the system security and reliability are ensured.

The invention relates to a digitized real-time magnetic field compensation device and method on the basis of a super-conducting magnetic sensor. The digitized real-time magnetic field compensation device is characterized by leading in two-stage negative feedback with different passing band characteristics on the basis of a traditional magnetic flux locking ring reading circuit to achieve reading of high-sensitivity to-be-measured magnetic field signals and compensation of low-sensitivity to-be-compensated magnetic field interference, adopting a digital circuit composed of an analog-to-digital converter (ADC), a microprocessor, a digital-to-analog converter (DAC) and accessories thereof to form a magnetic compensation circuit, and adding soft start capable of improving reliability of the magnetic compensation device and a function of automatic direct current offset eliminating of a magnetic flux locking ring. The compensation method is characterized by collecting output signals of the magnetic flux locking ring through the ADC, performing direct current offset elimination, filtering, inversion and integration through the microprocessor and finally outputting signals required by magnetic compensation through the DAC. A SQUID Feedback ring is used for feedback, so that the structure of the magnetic compensation device is greatly simplified, and maintainability, reliability and to-be-compensated signal withdrawing capability of the magnetic compensation device are improved.

The invention discloses a distributed synchronization solar energy street lamp control system comprising a photovoltaic cell array, a centralized control system, a storage cell array and an inverter, wherein the photovoltaic cell array and the storage cell array are respectively connected with the centralized control system connected with the inverter; and the alternating current output end of the inverter is connected with a street lamp sequenced power supply installed on a road. The centralized control system comprises a sensor subsystem and a principal computer control center subsystem, wherein the sensor subsystem comprises a sunlight sensor for detecting the illumination intensity of the street lamp working condition; the principal computer control center subsystem is used for controlling the photovoltaic cell array to convert solar energy into electric energy so as to store the electric energy in the storage cell array according to a signal collected by the sensor subsystem whenthe illumination intensity detected by the sunlight sensor is more than a preset threshold; and otherwise, the storage cell array is controlled to discharge and supply power for the street lamp sequence by the inverter. The distributed synchronization solar energy street lamp control system can improve stability, has high utilization ratio of the photovoltaic cell and the storage cell, lowers application cost and strengthens maintainability.

The invention discloses a keyword drive-based automatic test method of urban rail drive control units. The method comprises the following steps: determining a keyword set of a tested object; compiling a test script according to the keyword set; establishing a keyword drive-based automatic test frame and constructing a top layer test data table, a middle layer test data table, a bottom layer test data table and a keyword support library for the automatic test frame; inputting the test script into the automatic test frame, successively calling drives of the layers to inquire the contents in the test data tables on the basis of a test drive engine of the automatic test frame in allusion to each objective keyword in the test script; and calling bottom layer functions of the keyword support library to output a script bottom layer execution sequence file and directly and interactively carrying out test with the tested object. The keyword drive-based automatic test method of urban rail drive control units has the advantages of reducing the skill requirement for the test personnel, being high in test script reusability and good in maintainability and portability, shortening the test script development and maintenance time and reducing the test script development and maintenance cost.

The invention provides an intelligent mobile terminal television remote control system, the hardware frame of which comprises: (1) a intelligent handset terminal, used as a remote terminal for realizing multifunctional remote control operation, having a blue tooth communication function and equipped with Microsoft Windows Mobile 5.0 operation system; (2) a media center PC terminal, used as a server side for processing and controlling data, equipped with Microsoft Windows XP Media Center Edition operation system; (3) a high definition television terminal, used as display terminal for receiving television signals transmitted form the media centre PC terminal and displaying the signals on screen; the above hardware frame realizes the mentioned functions by the server side assembly, the intelligent mobile terminal assembly and a data transmitting assembly. The invention adopts blue tooth communication technology and utilizes intelligent handset terminal to completely realize the function of using handset to remote control television and displaying the sub channel program on the intelligent handset. The system has reliability, robustness, easy-maintainability and expansibility, and lays a good base for establishing more and better applications.

The invention discloses a universal simulator for aircraft engines. The universal simulator comprises an upper industrial personal computer, a simulation measurement and control computer, a display control desk, a combination instrument case with a plurality of instrument hardware modules, an instrument extension case, a signal adaptation unit, a direct-current voltage-stabilized source and a special testing cable. The universal simulator has the advantages that mathematical models of the engines are operated by an embedded high-performance real-time operating system of the simulation measurement and control computer, so that the real-time performance and the effectiveness of simulation experiments can be guaranteed; hardware architectures for forming testing systems are standard PXI [PCI (peripheral component interconnect) extensions for instrumentation] bus open architectures, accordingly, the hardware modules of various mature PXI bus interfaces can be extended and configured according to particular testing application, and the universal simulator is high in automation degree, extensibility and compatibility and good in maintainability; the signal adaptation unit is configured with standard and universal electric connectors by means of integration, and only corresponding matched testing connecting cables need to be replaced, so that electric connection of the testing systems can be quickly reconstructed by the simulator for the engines, and requirements of platforms on the universality can be met.