Projeto de um sensor de TOF utilizando o ZR16S08 para aplicações de IOT

Abstract

The Internet of Things refers to the connection of various devices, sensors and actuators, to a wireless network to obtain information and perform autonomous tasks. In this context,

with the expansion of the concept in recent years, it is increasingly necessary to deve- lop new technologies and to improve, whether based on better results or reduced costs,

the sensor nodes, since they supply information to decision-making systems. This work presents the design, using the Brazilian microcontroller ZR16S08, developed by SMDH in partnership with UFSM, of a system for measuring the Time o Flight (ToF) of ultrasonic

waves, whose main applications are in the measuring of direct and reflected signal distan- ces and the estimate of the velocity of a fluid, which in the case of this paper will be air.

The steps for the design of the sensor circuits, the elaboration of the programs related to the signal transmission , the estimated results and the sensor functioning tests for different

conditions will be presented. The differential of this work is the use of the Brazilian mi- crocontroller, which besides providing a low cost alternative, encourages the development

of national technologies, proven its ability to communicate with a central that is capable of submitting the acquired data to the cloud.