Wave channel moisture sensor for biomass materials

Abstract

This paper presents results of the initial research into application of microwave techniques for measuring the moisture content in wood biomass. The goal of the research was to develop a control system for continuous monitoring of moisture control during the manufacturing process. We propose using a closed, low-energy microwave circuit, through a rectangular flow-through chamber with a unique profile. Results of the initial laboratory testing are promising. They indicate that this technique has the potential for an industrial application and may lead to a development of a simple and cost effective, continuous moisture control system. The research required designing a complex wave channel and high-precision manufacturing to build a laboratory prototype. The research team then conducted extensive testing of the prototype, including microwave leakage impact on the safety of the workplace. The paper also presents qualitative analysis.