单片机控温系统英文文献.pdfVIP

Instruments and Experimental Techniques, Vol. 45, No. 3, 2002, pp. 408–411. Translated from Pribory i Tekhnika Eksperimenta, No. 3, 2002, pp. 127–130. Original Russian Text Copyright © 2002 by Teplov, Anisimov. LABORATORY TECHNIQUES Thermostatting System Using a Single-Chip Microcomputer and Thermoelectric Modules Based on the Peltier Effect V. Yu. Teplov* and A. V. Anisimov** * Kazan State University, ul. Kremlevskaya 18, Kazan, 420008 Russia ** Kazan Institute of Biochemistry and Biophysics, Kazan Science Centre, Russian Academy of Sciences, box 30, Kazan, 420111 Russia Received May 16, 2001; in final form, October 22, 2001 Abstract—A flexible temperature-controlling system matched with the liquid thermostatting circuit is based on a single-chip microcomputer. Thermoelectric modules based on the Peltier effect are used for sample cooling and heating. The accuracy of the temperature maintenance is better than 0.1°C in a range of –20 to +70°C. The system is designed for NMR relaxometers but can be also used to control the temperatures of any volume-com- 3 parable objects (~50 cm ). This work describes a thermostatting system for a design versions of the thermounit and thermojacket are temperature range of –20 to +70 with a universal described in [3, 4]. control circuit based on a single-chip microcomputer. It is rather important that, due to the programmed To cool and heat a heat carrier, thermoelectric modules control used in the described thermostatting system, the based on the Peltier effect are used [1, 2]