Popular renewable energy sources such as hydraulic, wind and solar energy, taken together, cannot completely replace natural sources. As a new alternative, this paper considers the thermal expansion energy of a solid material. A kinematic diagram and the principle of operation of a device that converts the thermal expansion energy of a steel rod into electricity are presented. Calculations show that new materials with given characteristics are needed to produce sufficient power.

This paper examines intelligent humidity sensors (transducers) as a component of an automated process control system that converts a controlled physical quantity into a measured signal for further processing in an automatic device, as well as mathematical models of intelligent support for bulk material moisture meters. It is demonstrated that one method for increasing the efficiency of the functioning of quality meters for various bulk materials is the development of conceptual foundations and their practical implementation in the construction of express devices capable of measuring grain and grain materials. The interaction of intelligent support measuring tools in technologies for automated moisture control in technological processes and control is investigated. The microwave method is recommended for monitoring the moisture content of grain and grain materials, as well as their metrological characteristics.