The thesis describes the realization of precise automatic measuring of beverages volumes. Result of the thesis is a prototype which allows simultaneous volume measurements of two beverages. The first part of the thesis is devoted to descriptions of separate building blocks, such as PWM modulation, load sensor, flow meter and rotary encoder. Beside that the first part contains descriptions of advantages and disadvantages and reasons for use particular kind of sensors. The measurement error between theoretical and actual value is important for calibrating sensors and precise working of the prototype. We used flow meter for measuring beverages. Load cell is used for detecting the glass and stop dispensing, if the glass is removed. The thesis also compares load sensor and flow meter as indicator for measure beverage volume. The desired quantity is shown to the user by alphanumeric display. The quantity is controlled by optical incremental rotary encoder with pushbutton. The benefit of this kind of encoder is a wide variety of applications and easiness to define rotary directions. For dispensing beverages we used submersible pumps.
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