79 results about "Virtual instrumentation" patented technology

A graphical application development environment is provided, for the development of test, measurement and process control applications. Said environment comprises thematically organized groups of “panels” representing components of virtual instruments, and said panels are combined and interconnected via data channels, control channels and event channels to form a complete instrument “front panel.” Each panel represents a quasi-autonomous “aspect” software object that has the attributes, properties and connectivities of the represented instrument component, and that is associated with executable code segments, including code segments that are usable by a plurality of aspects and are maintained in libraries accessible to an aspect handler for the construction of aspects. A representation of a user-developed application program, as created in a textual language, comprises an executable description of front panel aspects and their attributes and interconnections, and serves to invoke said associated code segments to run said user application.

A system and method for controlling an instrumentation system, wherein the present invention includes an improved instrument driver software architecture. The instrument driver software architecture of the present invention provides a number of features, including instrument interchangeability, i.e., the use of interchangeable virtual instruments or interchangeable instrument drivers, improved performance, an improved attribute model, improved range checking, and improved simulation features, among others.

A system and method for controlling an instrumentation system, wherein the present invention includes an improved instrument driver software architecture. The instrument driver software architecture of the present invention provides a number of features, including instrument interchangeability, i.e., the use of interchangeable virtual instruments or interchangeable instrument drivers, improved performance, an improved attribute model, improved range checking, and improved simulation features, among others.

The invention relates to an automatic detecting and fault diagnosing method of an unmanned aerial vehicle based on cloud computing. A cloud computing platform is adopted; and in combination of a virtual instrument labview, a detecting system is endowed with a characteristic of networking, and a networked virtual instrument detecting system is established conveniently so as to realize the real-time data acquisition. Data acquired in real time are uploaded to a data server at a cloud and faults are detected through a fault detection cloud, if the faults are detected, the fault detection cloud is called to realize a remote diagnosis function, and the faults are fed back to a user through a Web interaction interface to be eliminated ultimately. The user can access the network through a terminal to access the system at any time to carry out unmanned aerial vehicle fault elimination. With a strong calculation capability of the cloud computing, the operation efficiency of the conventional detecting equipment is improved; by integrating abundant equipment resource and network resource, the utilization rate of the resource is increased to the maximum extent; and meanwhile, as the cloud computing provides a most reliable and the safest data storage center, the user needs not to worry that the data may lost any longer, and the security of the data is increased; the cloud computing further realize remote file processing and data and application sharing of different equipment; and the cooperation efficiency of teams is increased.

The invention provides a universal platform for environment endurance test of the control module of an engine, comprising an industrial control computer, a signal generating sub-system, a state monitoring sub-system, a simulation load sub-system box, an environment test box, application software, a database management system, etc. The system is constructed on the basis of key techniques such as control technique of electro-jet motor, multilayer CAN bus network communication technique, endurance test criterion and PCM long-term reliability assessment method. Based on dummy instrument technique and an embedded computer system, the invention can provide analog signals of a vehicle sensor and action of an execution mechanism, real-time control environment variables and a large-power DC power supply and on-line monitor operation state of PCM, thus evaluating the endurance of PCM by a reliability evaluation expert system. The platform is compatible to environment endurance tests of PCM of multi-manufactures and multi-types and is the open test system with high upgrading and expanding capacity.

A subject-oriented graphical programming environment, for the design and construction of virtual instrumentation systems, comprises means enabling the visualization of data sources, control sources, data sinks, and events, thereby maximizing hardware device interchangeability and allowing device simulation. Said means comprise a decoupling software layer for decoupling the data connection aspects of a development environment from its visualization, data processing and control components. The decoupling layer comprises a “Jack” component type, to interface with the data connection components of an application, linkable to a “Plug” type component that interfaces with the rest of the application. Jack and Plug components are configurable by application developers using graphical tools, providing users with broad discretion to define their own data acquisition virtual interfaces, rather than being limited to using an existing data connection component directly.

The invention discloses a field detection system for detecting the partial discharge of a cable and a joint, which comprises a hardware device and a software system. The hardware device comprises a broadband differential current sensor, a signal conditioning module and a data acquisition card. The broadband differential current sensor consists of a magnetic core, a Rogowski coil, a filtering and sampling unit and an electromagnetic shielding box. The signal conditioning module comprises a trigger signal circuit and an amplifier. The software system is labVIEW software in a virtual instrument technology. Signals are acquired from both ends of the cable and the joint by the broadband differential current sensor; after passing through the sensor, the signals enter the signal conditioning modules to be conditioned and amplified and then are sent into the data acquisition card so that analog signals are converted into digital signals; and the digital signals are sent into an internal memory of a computer to be subjected to anti-interference treatment in real time by a PCI (Peripheral Component Interconnect) bus; data subjected to interference removal is written into a database; and after repeated acquisition, the data is extracted from the database to carry out spectra analysis and data report so as to know partial discharge information of the cable and the joint and judge whether the partial discharge hidden danger exists or not.

The invention provides a virtualized training system and method for airplane maintenance. The system comprises an airplane cognizing module, a principle learning module, a prior-flight maintenance module, a virtualized instrument module, a virtualized dismantling module, a fault diagnosing module, a helper film module, a self-evaluation module, a virtualized instrument testing module, and a fault generating module. The virtualized training system and method proposed by the invention can not only train the flight crew to conduct daily maintenance and rule out fault to make the crew more skilled in their work, but also can be used for diagnosing the fault of an airplane remotely and making maintenance plans. At the same time, the system and method are also ideal for civil airplane maintenance and good for related students to learn about airplane theories and practical operations.

The invention discloses an oil seal control device of an aircraft turbofan engine under deplaning state. The device can realize 'false start' of the engine under the deplaning state (the deplaning state means the state of the engine state when the engine breaks away the control of the plane and works independently), thus driving an engine rotor to rotate and injecting oil-sealing oil fluid into the internal surface of an engine fuel system accessory and the internal surface of a turbo-starter fuel system accessory for oil sealing. The device includes a case, a signal acquisition system, an interface circuit system, an A / D converting system, a main control computer, a power supply system and a display and operating system. The device comprehensively utilizes the computer control technology, and the technologies of virtual instrumentation, signal testing and treatment and the like, firstly realizes the oil sealing control of the engine under the deplaning state and meets long-term oil sealing requirement of the aircraft turbofan engine.

It is a kind of reconstructable virtual instrument of software bus and chip structure. It relates to the technique in computer field. By adopting the feature that COM component supports direct reference of binary code, it designs the board drive module, software console, software signal processing circuit of virtual instrument as COM component, and the main program as COM container. It assigns several overall memory blocks in main program to simulate the data wire of hardware bus. It designs message-transmitting module to simulate control wire of hardware bus by using the operation system message sending mechanism. It uses COM structure to realize software module dynamic joint; uses software bus to realize data interaction and operation control between software modules. This invention boasts the open structure. It is compatible with virtual instrument software chip with different languages and different platforms. The software chip is plug-and-play and hot plug element.

The invention relates to a sensing detection experimental method based on networked virtual instruments, and belongs to the technical field of sensing detection experimental application. The sensing detection experimental method is based on a sensing detection system of the networked virtual instruments. The system relates to system hardware lap joint and software architecture. By means of the method, remote control and real-time detection of sensing experimental boxes and experimental instruments can be achieved, a virtual laboratory environment can be provided for experimenters remotely, and the utilization rate of experimental equipment and the utilization rate of a laboratory can be increased. Meanwhile, by means of the method, key technologies of application of the networked virtual instruments can be achieved, a professional, efficient and novel sensing detection educating and learning experimental platform is provided for a great number of college teachers and students, the problem that it is difficult for students to carry out practice is solved, high-quality resources can be shared, and beneficial exploration is carried out on discussion and solution of the problem that college experimental resources are imbalanced.

The invention is a virtual apparatus-based switcher auto tester, comprising software part and hardware part comprising computer, signal conditioning unit and data collection card, where the software part is an application software designed, based on Labview7.1 virtual apparatus software development platform, and operating in Windows XP, sending out various signals and operational orders, receiving and processing data, displaying signal waveform by friendly man-machine interactive operation interface, so as to implement automatic switcher testing; the data collection card is equipped on PCI socket of the computer; the signal conditioning unit is connected through cable with the data collection card and the switcher to be tested.

The invention provides a method and a system for remotely monitoring laser power of a laser device on the basis of virtual instruments. The method includes acquiring the laser power of laser beams emitted by the laser device by the aid of a laser power meter; acquiring temperatures of a condenser barrel of the laser device by the aid of a temperature sensor; transmitting data measured by the laser power meter and the temperature sensor to a remote client via a data acquisition card, an upper computer and a cloud server; enabling the remote client to generate laser device running control instructions according to fault conditions of the laser device; transmitting the laser device running control instructions to the upper computer via the cloud server and controlling the laser device when the laser device runs. The method and the system have the advantages that the laser device can be remotely monitored and controlled in real time, the system is stable and safe and is convenient to operate, and the product processing quality can be improved.

The invention belongs to the virtual reality technology field and discloses a meteorological radar training control system and method based on virtual reality and a computer. The system comprises VR hardware equipment, wherein the VR hardware equipment is composed of VR external members. The method comprises steps that (1), system management is carried out, including database and user management;(2), VR modeling is carried out in combination with model type classification of meteorological radars, and key models partially have electrical characteristics; (3), common virtual instruments required for meteorological radar testing and training are provided; and (4), a secondary development interface and functions are provided. The system and the method are advantaged in that the virtual reality (VR) technology is integrated into meteorological radar training, hardware and travel cost for training is reduced, safety of training personnel is enhanced, an online education scene is made to berealer through an immersive scene provided by the VR, and the training effect is improved. Remote VR implementation is employed, time, personnel and fund constraints of traditional centralized training are avoided, and training timeliness is higher.

Nuclear spectroscopy systems have improved over the course of time especially with the advent of digital pulse processing. One disadvantage of digital processing, however, is that it has eliminated the older, universally compatible interface standard of analog signals. Digital component interfaces are often defined by computer software, protected by copyright and unique to a single manufacturer. Consequently, all components of an entire spectroscopy system must be from a single manufacturer. This not only dictates system wide component replacement, but also impedes optimization that would otherwise occur were component compatibility the rule rather than the exception. The present innovation describes a method and apparatus to relieve the present incompatibility between digital components of a nuclear spectroscopy system that are supplied by more than one manufacturer.

The invention provides a flight control software rapid implementation platform based on a model. According to the scheme, the flight control software rapid implementation platform comprises a flight control software module, a rapid implementation tool chain and a flight control computer. After the modeling flight control algorithm is loaded into the flight control software module, a tool chain israpidly realized to generate codes, the codes are transmitted to the flight control computer, and the flight control computer realizes semi-physical simulation by loading the codes. According to the scheme, an automatic code generation technology is mainly utilized to directly generate embedded flight control software which can be operated on a corresponding flight control computer and can virtually invoke flight control hardware resources in an instrumented manner from a graphical Simulink flight control algorithm model;the existing C code algorithm can be conveniently inherited; the flight control software can be comprehensively tested and verified by means of model rule check code testing, software model-in-loop (SIL), hardware-in-loop (HIL) and the like, so that the high-quality airborne flight control software can be quickly and efficiently obtained.

A bunker coal level detecting method based on virtual instrument intelligent cameras belongs to the technical field of automatic online monitoring of coal equipment, and is characterized in that depth maps of reference substances are obtained by the three intelligent cameras and are matched, accurate distance information is extracted more reliably in a fuzzy environment with weak light, and the detecting method in the technical scheme is used for measuring the height of a bunker coal level. By the aid of the method, installation is convenient, accuracy of the distance information is increased, and whether the coal level in a bunker exceeds a threshold value or not can be analyzed in real time.

The method of establishing intelligent virtual control for intelligent virtual control instrument includes the following steps: determining the configuration of intelligent virtual control; determining the math model of intelligent virtual control including decomposing into modules, establishing math model, algorithm design and program description; establishing the non-intelligent virtual control library; and establishing the development system and making the intelligent virtual control in Windows system through selecting proper non-intelligent virtual controls, setting the physical attributes of the non-intelligent virtual controls, endowing functions for the non-intelligent virtual controls, and testing and fusing the non-intelligent virtual controls. The present invention has the technological effects of integration, being economic, interactive, opened, fast in response and green, etc.

The invention discloses an automatic-regulating discharged particulate matter dilution sampling system; the system includes a dilution air regulating unit, a diluter unit, a particulate matter sampling unit and a signal conditioning and acquisition unit, and the dilution air regulating unit includes a high-efficiency particulate matter filter purifier, a pressure limiting valve, a flow controller and an electric heater, and is used for regulating the dilution air flow and temperature; the diluter unit is an air and sampling gas staying room with a thermal insulation material; the particulate matter sampling unit includes an optical fiber filter paper clamp and a three-way valve which is only used when other test system is needed to be connected); the signal conditioning and acquisition unit comprises sensor data acquisition, signal processing, data acquisition card, and PC (personal computer) LabVIEW (laboratory virtual instrumentation engineering workbench) data acquisition and PID (proportion integration differentiation) control programs. The automatic-regulating discharged particulate matter dilution sampling system is high in degree of automation, can realize the physical and chemical property analysis of particulate matters by filter paper collection, also can be in combined use with other detection instruments such as SMPS (scanning mobility particle sizer), DMS500 (difference mobility sizer) and the like, and is suitable for PM2.5 (particulate matter2.5) detection occasion with strict requirements on dilution conditions.

The invention discloses a ratio electromagnet performance test system comprising a computer, a printer, a multifunctional data acquisition card, a mechanical drive device, a servo controller, a force sensor, a displacement sensor and a signal converting and amplifying unit. The ratio electromagnet performance test system is designed by working out a reasonable test scheme according to the mechanical structure, performance characteristics and test items of a ratio electromagnet and organically combining a sensor test technology, a computer control technology, a virtual instrument technology and an ACCESS database technology. The test system has precise test, complete function, high degree of automation and high reliability.

The invention discloses a wireless virtual oscilloscope realization system which comprises a wireless data collection device, mobile terminals and application software. The wireless data collection device is composed of a data collection module, a WI-FI communication module and a power source module, the mobile terminals are smart phones, PADs and computers with wireless network cards and are in wireless connection with the wireless data collection module in a point-to-point manner to realize bidirectional data communication, and collected waveform data are transmitted to the mobile terminals in a wireless mode. The application software installed in the mobile terminals processes, analyzes and performs waveform display on the waveform data. A method and system using a virtual instrument to remotely test time-domain signal waveform on the basis of wireless transmission technology is provided.

The invention discloses a virtual instrument scripting language parser and a method thereof; the parse method comprises the following steps: reading configuration information of members and connectors of a first configuration file; respectively generating corresponding member embodiments and connector embodiments according to the configuration information of members and connectors; respectively adding all member embodiments and connector embodiments into a member embodiment set and a connector embodiment set; generating an application program. The parser comprises a parse module, a member and connector embodiment management module and a generation module. The virtual instrument scripting language parser and the method thereof allow a user to use the parser to dynamically load different configuration files in the application phase, thus online modifying and upgrading functions of a measuring system.

The invention relates to an electric automobile road tester, comprising sensors for sensing physical parameters to be tested and also data collection card and computer, where the sensors connect the converted voltage or current signals to the data collection card, the data collection card connects the A / D converted signal to the computer, and the harddisk of the computer has a virtual apparatus software program calculating and converting the digital input signal into test software modules of interface states of the virtual apparatus. The invention uses the virtual apparatus technique and can analyze and display large number of data on computer, and realizes a function of real-time measuring and dynamically analyzing various parameters of an electric automobile on computer by software programming.

The invention provides a data acquisition system for a fiber current transformer based on virtual apparatus technology and a virtual verification system applied in the data acquisition system. According to the virtual verification system, a virtual apparatus, namely a simulation mutual inductor is used to complete the simulation process of current output signal acquisition, signal conditioning and signal detection. After the virtual process, related characteristics of the fiber current transformer are analyzed to obtain a transient characteristic and a stable state characteristic. Data acquisition, signal detection processing and characteristics analysis can be completely conveniently and reliably in high efficiency; test technology for an electronic current transformer is raised; and technology guarantee for safe and stable operation of the electronic current transformer is provided. Further, the invention also provides a virtual verification method that is used to realize the functions.

A safety detection system of information technology equipment (ITE) comprises a network database server. Computer-aided ITE safety detection software, detection expert system software, virtual instrument software and text processing software are installed in the network database server, wherein the computer-aided ITE safety detection software can call required data from the detection expert system software, the virtual instrument software and the text processing software that also can call the required data from the computer-aided ITE safety detection software; the network database server is connected with a router through a local area network gateway; and the router is connected with a plurality of clients. With the adoption of the safety detection system, the deficiency of the current safety detection of an information product is made up for; and the advantages of instrumental functions are combined with the advantages of a computer information management system, and the specificity and the specialty of the safety detection of the equipment are considered fully, so that an information technology and information management are well applied to the safety detection test of the equipment.

The invention discloses a virtual instrument measuring support storage device which is used together with detected virtual instrument software. The virtual instrument measuring support storage deviceis provided with a USB interface and comprises an external casing module, a casing internal control circuit module and a built-in file system, wherein the internal control circuit module comprises theUSB interface, a flash memory, an MCU and a buffer, the MCU implements the user identity authentication and the program data integrity verification and completes the address strobe and the digital-analog conversion, and a port of the MCU is connected with the USB interface, the flash memory, the buffer and an intelligent indicator lamp module; and the built-in file system comprises an integrity verification file, a log file, a user authority list, a measuring calibration parameter file and a traceable digital certificate. The invention has the advantages of high storage reliability, portablevolume and plug-and-play.

This invention relates to an automatic generation method for virtual instrument software. Building required module with demand as drive, abstract extracting and fining on four aspects as data acquisition, data process, data display and data storage; by the reasoning on matching relation with functional module set, obtaining the compatibility of data inlet and outlet between user selected modules to automatic decide the in-out sequence of data stream among modules; arranging standard uniform interface for functional module start and stop in every functional module. This invention just needs select opposite module for target software, eliminates the design and control loop, and increases efficiency.

The invention relates to an RF circuit off-location detecting system of a communication and navigation system. The RF circuit off-location detecting system comprises an RF maintenance support general testing platform, wherein the RF maintenance support general testing platform comprises a computer installed with virtual instrument development environment software, a USB interface of the computer is connected with a PXI low-medium frequency instrument module, a display screen of the computer is connected with an embedded controller through a VGA line, the embedded controller is controlled by the virtual instrument development environment software, the embedded controller is connected with a network switch, and the network switch is connected with a spectrometer, a signal source, a frequency meter, a power meter, an RF expansion combination, an oscilloscope and a DC voltage-stabilized power supply. The RF circuit off-location detecting system is conductive to fast test of the communication and navigation system as well as accurate judgment and positioning of faulty parts, can effectively reduce maintenance training difficulty and use difficulty of the communication and navigation system, reduces the number of maintenance personnel and improves maintenance efficiency while substantially improving combat readiness maintenance level and system support capability of the communication and navigation system.

The invention discloses a virtual instrument measurement system. The virtual instrument measurement system comprises: an acquisition end which is in communication connection with a sensor and is used for acquiring original data of the sensor and uploading the original data to a server; and the server which is in communication connection with the acquisition end and is used for receiving the original data uploaded by the acquisition end and performing data analysis processing on the original data. The technical problem that an existing acquisition end cannot meet the requirements of the prior art is solved.