Instrumentation and Virtual Library for Air Pollution Monitoring

Abstract

In this work a data acquisition board (DAQB) with data transfer by serial port and the associated virtual library included into LabVIEW software are presented. The DAQB developed around a National Semiconductor LM 12458 device, have the capability to perform tasks that diminish the host processor work and is capable to communicate with the host computer by using a set of drivers associated. Highly integrated device circuit that has into it the most components of the board, facility in data handling, good metrological performance and a very low cost are the benefits of the proposed system. Using the LabView environment, we have realized a virtual instrument able to get from the prototype data acquisition board for environmental monitoring parameters the information about air pollution factors like CO, H2S, SO2, NO, NO2 etc. In order to get effective information about those factors and the monitoring points, this intelligent measurement system, compound from portable computer, and gas detector. This system can be used to map the information about the air pollution factors dispersion in order to answer to the needs of residential and industrial areas expansion. IntroductionThe modern microcomputer technology has made it relatively simple to install, configure, and start up a high-performance data acquisition system. Experienced users will be happy to know that many of the problems encountered a few years ago are gone. New users will never realize how difficult it once was to bring up a data acquisition system. These same technology advances have made it even more difficult than ever to select among the many options. The hardware decisions facing a user today require a great deal of study, analysis, and consideration. Every system will work, but some are better than others for each particular application. Most data acquisition hardware is compatible with most popular industrial software, or it comes with a software package of its own. Virtually all these data acquisition devices and systems have the same basic specifications and options on their data sheets: signal conditioning, number of analog input channels, sampling rate, resolution, accuracy etc. 11www.intechopen.com Air Pollution 242

Development and Implementation of Virtual Instrumentation for the Measurement of Operating Parameters of an Engine Using Diesel-Biodiesel Mixtures

“…The VIEM was synchronized with the sensors, data acquisition card, and the signal conditioners to measure and register in real time parameters like O 2 , NO, CO, SO 2 , CO 2 , FC, rpm, and temperature. The VIEM programming, electrical schematic diagrams for the sensor signal conditioning, as well as the characterization of the O 2 , NO, CO, SO 2 , and CO 2 sensors are presented as results [29].…”

Virtual Instrument for Emissions Measurement of Internal Combustion Engines

“…VIEM is synchronized with the sensors, data acquisition device, and signal conditioners to measure and register in real time the emissions of O 2 , NO, CO, SO 2 , and CO 2 . The VIEM programming, the electronic schematics diagrams used for the signal conditioning sensors, and the sensors characterization of O 2 , NO, CO, SO 2 , and CO 2 are presented as results [ 24 ].…”