中英文外文翻譯--數(shù)據(jù)采集系統(tǒng)-資料下載頁
2025-08-16 18:58本頁面
【正文】 ta loggers can run as standalone devices, much like a recorder. They store data locally in internal memory, which can acmodate 50,000 readings or more.PC connectivity makes it easy to transfer data to your puter for indepth analysis. Most data loggers are designed for flexibility and simple configuration and operation, and many provide the option of remote site operation via battery packs or other methods. Depending on the A/D converter technique used, certain data loggers take readings at a relatively slow rate, especially pared to many PC plugin cards. Still, reading speeds of 250 readings/second are not unmon. Keep in mind that many of the phenomena being monitored are physical in nature — such as temperature, pressure and flow — and change at a fairly slow rate. Additionally, because of a data logger superior measurement accuracy, multiple readings and averaging are not necessary, as they often are in PC plugin solutions. Data acquisition front ends are often modular and are typically connected to a PC or controller. They are used in automated test applications for gathering data and for controlling and routing signals in other parts of the test setup. Front end performance can be very high, with speed and accuracy rivaling the best standalone instruments. Data acquisition front ends are implemented in a number of formats, including VXI versions, such as the Agilent E1419A multifunction measurement and control VXI module, and proprietary card cages.. Although frontend cost has been decreasing, these systems can be fairly expensive, and unless you require the high performance they provide, you may find their price to be prohibitive. On the plus side, they do offer considerable flexibility and measurement capability.A good, lowcost data logger with moderate channel count (20 60 channels) and a relatively slow scan rate is more than sufficient for many of the applications engineers monly face. Some key applications include: ? Product characterization ? Thermal profiling of electronic products? Environmental testing。 environmental monitoring? Component characterization? Battery testing? Building and puter room monitoring
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