Posts Tagged ‘data logging’
June 17th, 2009 | 
Author: Data acquisition systems are used for sampling, recording, storing and analyzing real time data. Data acquisition systems, also known as DAQ or DAS, records signals and wave forms of numerous physical quantities such as temperature, pressure, humidity, density, and real life data such as ECGs, EEGs, etc. This recorded data is then fed into a computing device, usually a computer, and is then stored for future analysis.
Data recording finds a wide range of application in wide variety of scientific and medical research purposes, which includes Eco cardiology, laser Doppler flow, micro electrode recording, etc. From the recording of data, to the actual analysis, it involves several minute components that make up the unit as a whole.
Apart from research purposes, data logging is also used in large scale domestic as well as generic data recording and analysis purposes, such as weather broadcasting, studying seismic activity, wireless and PC data acquisition, Supervisory Control & Data Acquisition (SCDA), manufacturing, power, water treatment, production purposes etc. Data recording is indeed one of the major aspects of quality and quantity control, which determines the ultimate success in a research or a production or manufacturing process.
DAQ systems are equipped with a host of electronic devices that help in recording data, storing them and analyzing the stored data over a period of time. The first step in data acquisition is recording the signals itself, which is done using transducers or electrodes, which are extremely sensitive to change in environment. These signals are then converted to a digital form, which can then be stored on a computer, and can be retrieved during the analysis phase.
Data loggers are significantly different to data acquisition systems, however, in context, both are used interchangeably to a certain extent. It might be noteworthy to notice that a data logger is a subset of DAQ systems, and all data loggers may be termed as data acquisition systems.
You can get more information on data acquisition systems and data loggers by visiting Biopac.com.
Article Source: Data Acquisition Systems & Research
When realizing the term data acquisition (DAC) it’s important to first know what is being acquisitioned: real world data. And real world data translates directly into the life sciences.
Life science, or biology, is a discipline of science that has, for hundreds of years, formed opinions of scientists, doctors, and thinkers alike. Theories and medications have been created with the study of life science, just as crimes have been solved, and organisms understood. The basic way living organisms interact with one another and their surroundings, how these organisms are structured, how they grow, what their origin may be, and their general evolution, is more or less what the term ‘life science’ encapsulates.
Real world data gets manipulated by a computer, where its signals and waveforms are processed, extracting critical information and storing it digitally in a computer processed machine. The data gets measured by components of data acquisition systems where sensors convert measurements and electrical signals before a computer manipulates the data and its signals and waveforms are processed. Critical information is then obtained and stored digitally in a computer processor, completing the first and second steps of the data acquisition process.
After life science has been converted to wavelength data, it is recorded by a data logger. Data logging is an electronic device that collects data over time, or in a specific radius, and is collected by one of three means, which include: built in instruments and sensors, or external instruments and sensors. After said data is collected, manipulated, and transformed, useful information is highlighted to suggest different types of scientific conclusions.
This process, seemingly lengthy, has allowed many growths in scientific understanding and continues on a number of levels to produce further understanding of organisms, and their relationship to the world at large.
For more information on data acquisition and data acquisition systems, please visit Biopac.com
Article Source: Data Acquisition