| Abstract [eng] |
The aim of this research is to study the abilities of creating wireless ultrasonic sensors. Usually, the term “sensor” isn’t even used to describe such devices, because, in order to perform measurements, ultrasonic signal has to be generated, acquired and processed. The electronic part, used to complete such tasks is quite complex and expensive; however, market demands considerable need for simple autonomic ultrasonic systems, which could be described as sensors. In this case, aim of this research is to study abilities to create relatively small ultrasonic micro-systems, which could be referred to as a sensor, study possible configurations and parameters, of the system, as well as dependencies and limits of system‘s parameters such as generated signal frequency, frequency of measurement and length of the stored signal. During the research, system of interest was divided into three parts – microcontroller, analog part, and communication module. Every single of these parts was studied individually, determining possible working frequencies, energy consumption, frequency of measurements, possible size and price figures of the system. Results of the research have shown, that the main factor, which limits possibilities to make these systems smaller in size and increase time of operation, is system‘s demand of energetical resources. |
