In-Vessel Resonant Communications

This paper presents a comprehensive performance estimation of enclosed volume (in-vessel) resonant communications. This type of communications can be used for measurements of pertinent parameters of liquids such as temperature, density, or viscosity within large, enclosed vessels, such as barrels, cisterns, or tanks. Extensive simulations and experimental work have been carried out to evaluate the feasibility of such communication. The efficiency of the excitation of cavity resonators filled with lossy liquids was analyzed. Further, the influence of monopole probe sizes and dielectric properties of liquids on the transmission characteristics between two probes was investigated. Finally, measurements of monopole probes located inside a tap water-filled barrel were performed. It is demonstrated that the determination of optimal monopole probe size providing communication links is one of the most important practical tasks for the development of an in-vessel communication system.