| Understanding the Unique Requirements of Portable Data Acquisition Systems |
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| Nov 01 2007 | |
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advertisement: Data acquisition sampling speed must be taken into account when determining the accuracy of the system. A given signal must be acquired fast enough so that any important information is not lost while the signal is being acquired. The required rate of data acquisition can be determined by using Nyquist’s Sampling Theorem. Simply put, the Nyquist theorem states that a signal must be sampled at twice the frequency of the spectral signal components which are of interest in order to accurately reconstruct the waveform.
Power Supply  Tough? Your data acquisition system has to be to withstand fractures like these formed during explosions in seismic exploration. Click to enlarge In order to conserve power, users with minimal processing requirements can select a lower range CPU and pair it with a high-end storage system in order not to load up the processor any more than necessary. Sensors and Signal Conditioning Selecting a portable data acquisition system with internal signal conditioning equipment can improve the quality and performance of the system. Types of signal conditioning include amplification, attenuation, and filtering. The type of signal conditioning required is very dependent upon the application and the types of sensors used to make the measurements. |
