Univerzální diagnostický přístroj pro oblast vytápění, větrání a klimatizace

Abstract

The thesis deals with the design and implementation of a portable diagnostic device for heating, ventilation, and air conditioning systems. The introductory part describes the physical quantities relevant to diagnostics and the typical faults of these systems. A review of existing diagnostic devices follows, identifying the shortcomings of current solutions on the market. The next chapter addresses the selection of suitable wireless communication technologies based on an original comparative experiment. The main part of the thesis presents the design and implementation of the device, which consists of a set of wireless sensor nodes and a communication gateway housed in a transportable case. It describes the sensors used, the printed circuit board design, the firmware, the custom ESP-LPSN communication protocol, and the server infrastructure with a web interface for monitoring and measurement configuration. The final part is devoted to verifying the functionality of the device on three real-world installations — a heat pump, an air conditioning unit, and a heat recovery ventilation unit — including a controlled experiment involving refrigerant extraction.