A microcontroller-based programmable temperature controller

Author

Kaliyugavaradan, S.

Author_Institution

Sch. of Instrum. & Electron., Anna Univ., Madras, India

Volume

1

fYear

1997

fDate

9-14 Nov 1997

Firstpage

155

Abstract

A microcontroller-based programmable temperature controller developed using an RTD sensor is described. A resistance-to-time converter is employed to obtain a time-interval linearly varying with the sensor resistance. Using a counter of the microcontroller and suitable software, temperature under control is determined and compared with a target temperature. The resulting error, through a DDC implementation of PID algorithm, is used to control the firing angle of an SCR for controlling the power applied to heater. Experimental results are given in support of the scheme proposed

Keywords

electric sensing devices; microcontrollers; power control; programmable controllers; temperature control; three-term control; thyristors; DDC implementation; PID algorithm; RTD sensor; SR firing angle control; linearly varying time-interval; microcontroller-based programmable temperature controller; power control; resistance-to-time converter; sensor resistance; target temperature; temperature control; Chemical industry; Computer interfaces; Error correction; Microcontrollers; Sensor phenomena and characterization; Temperature control; Temperature distribution; Temperature sensors; Three-term control; Thyristors;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics, Control and Instrumentation, 1997. IECON 97. 23rd International Conference on

Conference_Location

New Orleans, LA

Print_ISBN

0-7803-3932-0

Type

conf

DOI

10.1109/IECON.1997.671038

Filename

671038