scholarly journals The Design of a Chemical Virtual Instrument Based on LabVIEW for Determining Temperatures and Pressures

2007 ◽  
Vol 2007 ◽  
pp. 1-7 ◽  
Author(s):  
Wen-Bin Wang ◽  
Jang-Yuan Li ◽  
Qi-Jun Wu
Keyword(s):  
Physical Chemistry ◽  
Data Acquisition ◽  
Virtual Instrument ◽  
Serial Port ◽  
Signal Conditioning ◽  
Chemistry Research ◽  
Software Modules

A LabVIEW-based self-constructed chemical virtual instrument (VI) has been developed for determining temperatures and pressures. It can be put together easily and quickly by selecting hardware modules, such as the PCI-DAQ card or serial port method, different kinds of sensors, signal-conditioning circuits or finished chemical instruments, and software modules such as data acquisition, saving, proceeding. The VI system provides individual and extremely flexible solutions for automatic measurements in physical chemistry research.

Virtual instrument designed for data acquisition

2020 ◽  
Vol 65 (1) ◽  
pp. 179-186
Author(s):  
Mihaela Dorica Stroia
Keyword(s):  
Software Development ◽  
Data Acquisition ◽  
Virtual Instrument ◽  
Virtual Instrumentation ◽  
Design And Implementation ◽  
Adequate Design

Current software development directions open up a world of possibilities, especially in the engineering field. Present paper is meant to highlight the advantages and in particular the ease of using virtual instrumentation facilities, with a proper and adequate design and implementation of desired instrument. In this idea we bring into discussion a design for virtual instrument which can be used for data acquisition that can be stored for further simulations according to the needs required by the process in discussion.

scholarly journals Novel Control Platform Development for PMLSM Drive System Based on Virtual Instrument

2013 ◽  
Vol 416-417 ◽  
pp. 530-535
Author(s):  
Jian Xun Jin ◽  
Wei Xu ◽  
Yan Chen ◽  
You Guang Guo ◽  
Jian Guo Zhu
Keyword(s):  
Data Acquisition ◽  
Virtual Instrument ◽  
Digital Signal Processor ◽  
Pulse Width Modulation ◽  
Digital Signal ◽  
Drive System ◽  
Signal Source ◽  
Computational Capability ◽  
Data Acquisition Card ◽  
Platform Development

A novel control platform for the permanent magnet linear synchronous motor (PMLSM) drive system has been built up based on virtual instrument (VI) and relavant data acquisition card (DAQ) devices. In the traditional control platform, it mostly depends on digital signal processor (DSP), which needs a lot of time to further develop the interface between the personal computer (PC) and operators, and its computational capability is not strong than computer. To overcome these shortages, a novel control platform is presented on the base of one PC, one LabVIEW, and one multifunctional data acquisition card. Firstly, a space vector pulse width modulation (SVPWM) signal source is executed in the VI. Then in order to improve the precision of control system, the field oriented control (FOC) is proposed for the PMLSM. Finally comprehensive experiments verify with relative simulations.

scholarly journals Integrated Durability of Automobile Alternator Test System Design Based on LabVIEW

2014 ◽  
Vol 8 (1) ◽  
pp. 839-845 ◽  
Author(s):  
Wu Weibin ◽  
Feng Yue ◽  
Du Junyi ◽  
Xu Pengbo ◽  
Feng Yunlin ◽  
...  
Keyword(s):  
Data Acquisition ◽  
Automotive Industry ◽  
Virtual Instrument ◽  
Measurement Errors ◽  
High Speed ◽  
Performance Test ◽  
Test System ◽  
Electrical Performance ◽  
Durability Test ◽  
Limit Test

New standards in the automotive industry highlighted the situation of the actual operation of the alternator and a variety of harsh environment simulation limit test. Using new standards in the automotive industry as a guide, this article presents a virtual instrument based on the durability of automobile generator integrated test system. The design adopt virtual instrument technology in designing the system, Graphic language, LabVIEW is applied in writing measure-control program. The system uses a lot of features on LABVIEW, including Data acquisition, control of serials port, etc. Test implementation uses the host computer via RS232 and RS485 communication port and the data acquisition card, NI PCI- 6221, to control the frequency hybrid motor, temperature control box, electronic loads and other intelligent devices, and to simulate a variety of automotive alternator working conditions and real-time monitoring to monitor the status of generators. Using this system, two separate automobile alternators can be tested in terms of high-speed vehicle impact and high temperature durability test and electrical performance test and other tests at the same time. As a result, the generator speed measurement error is within 1%, the control error is within 2%, voltage and current measurement errors were within 0.5% and 0.4%, which meets the requirements.

Data Acquisition System Design and Data Analysis on Automatic Transmission

2012 ◽  
Vol 239-240 ◽  
pp. 861-864
Author(s):  
Yan Qin Li ◽  
Chun Fu Li
Keyword(s):  
Data Acquisition ◽  
System Design ◽  
Virtual Instrument ◽  
Automatic Transmission ◽  
Data Acquisition System ◽  
Acquisition System ◽  
Dump Truck ◽  
Signal Acquisition ◽  
Transmission Oil ◽  
Turbine Speed

An efficient data acquisition system for electronic automatic transmission test, which makes use of American NI’s data acquisition card, is designed based on Virtual Instrument. The data can be collected by the data acquisition system include automatic transmission oil pressure, solenoid duty, as well as engine speed ，turbine speed ，output shaft speed and throttle degree，and so on. The key problems of the system design are measurement method of automatic transmission solenoid duty, signal conditioning circuit design and multi-signal acquisition synchronization. Test platform is North-Benz dump truck 2627K (Its power-train assembly is replaced), of which transmission and engine use respectively HD4070PR electronic automatic transmission and BF6M1015CP electronic diesel engine. The automatic transmission shift control strategy and oil pressure characteristics of clutch or brake etc can be analyzed through test data acquisition.

Fault Detection System Overall Design for Artillery Control Device

2012 ◽  
Vol 580 ◽  
pp. 401-406
Author(s):  
Shi Long Zhang ◽  
Ya Li Dou ◽  
Jian Gao ◽  
Jian Zhong Wang ◽  
Hai Wei Yuan
Keyword(s):  
Fault Detection ◽  
Data Acquisition ◽  
Real Time ◽  
Detection System ◽  
Control Device ◽  
Serial Port ◽  
Overall Design ◽  
Intelligent Terminal ◽  
Signal Characteristics ◽  
Great Generality

We designed the fault detection equipment for artillery cotrol device, and the performances and faults of the three subsystems can be detected, according to their signal characteristics. In this fault detcetion system, the MCU is used as the master controller, and the A/D conversion chip MAX197 is applied to acquisit and convers data. The data will be processed by the MCU, then be transfered to LCD intelligent terminal through serial port, and finally be displayed and preserved in the terminal. This detection system can complete data acquisition and real-time fault detection, locating the faults to the specific parts. It can also provide expert maintenance proposal in the three subsystems of artillery control device. Besides, this system has great generality and practicability, and it is convenient for upgrating and reforming.

Development of a Multi-Function Virtual Instrument Based on a Constant Current Source

2013 ◽  
Vol 385-386 ◽  
pp. 492-495
Author(s):  
Dong Bing Dai ◽  
Ya Jun Wang ◽  
Ye Ping Sun ◽  
Zheng Guang Liu
Keyword(s):  
Data Acquisition ◽  
High Precision ◽  
High Power ◽  
Virtual Instrument ◽  
Current Source ◽  
High Accuracy ◽  
Constant Current ◽  
Constant Current Source ◽  
Data Acquisition Card ◽  
Further Development

Virtual instrument is a result of the computer combined with some instrument hardware, working for the instrumentation applications, it is one trend of the instrumentation development .This paper presents a design of a high-power and high-precision constant current source, studied three different electrical testing technologies based on constant current source and propose the principle of integrated the three electrical test technologies on a virtual instrument platform. A multi-function virtual instrument system based on LabView language, USB data acquisition card and a constant current source has been developed. This system has a high accuracy, high integration and a thecapability of further development etc..

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