79 results about "Virtual instrumentation" patented technology

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 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.

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 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 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.

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 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.

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 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.