Návrh elektronického termostatu s nastavitelnou hysterezí

Abstract

The aim of this bachelor thesis is to analyze method of measure temperature with a view to other processing in microcomputer systems and realize the electronic thermostat design with adjustable hysteresis. Thermostat is operated by microcomputer Freescale HCS08GT60A. There has been used temperature sensor SMT160, whose output function of temperature is duty cycle of binary signal. Regulation is proceeding by switching electromagnetic relay. Communication between thermostat and user is realized by alphanumeric LCD and switches. Thermostat is powered on ~230 V/ 50 Hz. This thermo regulator works in four modes. In the first mode is regulation of temperature turned off, in the second mode is regulation of temperature turned on all the time. Third mode is regulation of temperature in five intervals during a day. In each interval is possibility to set different temperature. Last mode is the regulation of temperature in five intervals during a day in whole week.