FUNCTIONALITY VERIFICATION OF THE DEFORMATION UNITS FOR MEASUREMENT OF WIND SPEED AND DIRECTION

摘要

This paper is focused on functionality verification of the deformation units which are used for measurement of wind speed and direction. The principle of the method utilizes a balance of strain gauge sensors placed on the deformation unit which are connected to the bridge to achieve low noise, hysteresis and power consumption, high precision and wide temperature range. The sensor responds to the mechanical forces effect to the deformation unit. In this case a semiconductor strain gauges are used. They have a very considerable and accurate change of the electrical resistance with applied mechanical strain. Evaluation of the acting forces is realized as a voltage difference of the strain gauges in the bridge.