  The article deals with the development, implementation and research of the
spectrum analyzers that can be used in sensor networks and Internet systems of
things. As an operating frequency range, 2.4-2.5 GHz ISM is selected. At the
stage of hardware selection, a comparative analysis of existing available
microcontrollers for the analysis of the spectrum, the choice of hardware
interfaces, the ordering of the required modules and electrical components, as
well as the input control is carried out. During development, several variants
of spectrum analyzers on the basis of microcontroller and TI Chipcon CC2500
microcontrollers with USB interfaces, as well as Cypress CYWUSB6935 modules
with LPT and USB interfaces, have been implemented. At the development stage,
the development of the printed circuit board, its fabrication, component
assembly, microcontroller programming, the verification of the assembly's
robustness, making corrections, connecting to a personal computer and assembly
in the case have been carried out. An analysis of existing software for
collecting information on the state of the wireless broadcast is also
conducted. According to the results of comparative experiments of various
collections of spectrum analyzers, spectrographs for different types of signals
were obtained. On these typical spectrographs a comparative analysis of the
work of various prototypes was conducted. The offered approaches to building
sensors on the basis of spectrum analyzers allow to create low-power modules
for embedding in existing wireless information networks of enterprises for
prevention of inter-channel interference and ensuring the integrity of data
transmission.
