Laser anemometer using a single circuit board

Real time measurements of average wind velocities over ranges of a few hundred meters or more are important for the national economy and in scientific research; nevertheless, effective and economical measurement methods remain unavailable. We have designed a laser correlation anemometer which exploits the relationship between fluorescence induced by a laser beam traveling in air and the wind velocity in the path of the beam. The system measures the average vertical wind velocity in the path of the laser beam and employs a DBJ-80 single board computer; it makes full use of software capabilities and does not require modulus conversion systems. The device is light weight and easily transported, and tests show that accuracy of the measurements is highly satisfactory.