Пристрій для вимірювання вологості

Abstract

A device for humidity measuring includes the square-wave generator, attenuator, light-emitting diode and photodiode placed on the surface of element with multiple internal reflection of light, as a prism, the sides of the prism have rough surfaces treated with hydrophilic salt. Additionally introduced are a block of frequency difference, microcontroller, direct voltage source, reference generator on basis of negative resistance that includes two field transistors, measuring generator on basis of negative resistance.