CompactDAQ

Abstract: Micro-grid is sub-unit of a smart grid consisting of a complex power electronics, energy storage systems and several generating sources distributed throughout the network. Real-time based simulations of Micro-grid (MG) demands large computational resources. This research presents MG system that utilizes a field programmable gate array (FPGA, NI PXIe-7976R) module where real-time simulations, communication, and analysis is performed to determine the behavior of the MG system. Also, the data acquisition using NI CompactDAQ cards with the integration of the LabView program is used to determine MG output signals as a power quality analyzer. The three-phase output signals are then modified to emulate real-time MG scenario using Regatron (TC ACS). Further, the AC variable loads such as resistive, capacitive and inductive loads are incorporated to investigate the behavior of MG outputs. Overall, the MG system design and hardware implementation, the transmission line model and the algorithms in software environment as LabView and OPAL-RT, the results and its verification are discussed.

Abstract: The orthogonal frequency-division multiplexing (OFDM) technology receives increasing attention in underwater acoustic (UA) communications. This paper presents a real-time OFDM-based UA communication system, implemented using the National Instruments CompactDAQ device and the LabVIEW software. The system design including both the transmitter and receiver is discussed. The performance of this real-time system is verified through a UA communication experiment conducted recently in a tank. Compared with conventional digital signal processor (DSP)-based design, the proposed implementation simplifies the prototype design and reduces the software development time.

Abstract: One of the most important motivating factors for development of non-destructive diagnostic methods is rationalization of production. The original data acquisition system realized at the Department of manufacturing systems operation of the Technical University in Kosice with seat in Presov is described in this article. The system was constructed on the modular platform NI CompactDAQ with emphasis laid on a universality allowing wide variety of possibilities to acquire and process the physical quantities. Processing and evaluation of the signals performed using variety of functions comprised e.g. in LabVIEW Sound and Vibration Module is also described.

Abstract: For the lack of integrated and advanced monitoring method and equipment, the existing general environment evaluation methods cannot entirely collect and analyze the monitoring parameters, which objectively reflect the condition of general environment, so an integrated monitoring and data management system for general environment based on virtual instrument technology is proposed in this paper. The monitoring and data management system which adopts a NI CompactDAQ data acquisition system functioning high speed real-time collection of multi-parameters of climate (temperature, wind speed, solar radiation), air quality (formaldehyde, benzene, radon, etc) soil and water quality, etc. Employing the LabVIEW programming tool, the software system was developed with friendly graphical user interface, which can display the real-time monitoring results of the multi-parameters mentioned above. Moreover, the LabSQL kit is used to access the database to search historical records of every parameter, summarize the trend of environment change and further objectively evaluate the condition of environment. This system can be used as parameter acquisition instrument for general environment, and provides a new way for evaluation of the general environment.