Abstract
An automated data aquisition and control system was designed and built. The system, which had to be low cost, was based on a general purpose microcomputer and associated peripheral equipment comprising a printer, two floppy disk drives and a portable digital magnetic cassette recorder. The extension of the microcomputer capability to data aquisition and automatic control was obtained by adding an analog and digital I/O board housed in a separate instrument box communicating with the microcomputer through one of its expansion slots. The data aquisition section of the instrument consists on 46 analog channels and 2 digital impulse counting channels, the former being used for temperature, humidity and radiation recording and the latter for pluviosity and wind velocity measurement. The system is also capable of output control to support irrigation, artificial heating and forced ventilation.
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