System of data acquisition applied to a level control using fuzzy logic

摘要

This data acquisition device can be used to acquire analogical and digital signals such as control variables (pressure, temperature, flow, level, etc.), biological signals, etc. In this case, we will apply it to control a tanks level. The tanks store different kinds of fluids; many times they are filled and controlled manually. The DAQ device has analogous inputs that can process data measurement instruments, such as level and flow. This data are translated interpreted in a control system but in this case, we will control the tanks levels applying fuzzy logic in real time. The system by himself decides and send signals as much digital as analogous to the final control devices to correct and stabilize the process variables, in a predefined rank. The fuzzy logic is basically a multievaluated logic that allows intermediate values to be able to define conventional evaluations as yes /no, true/false, black/white, etc