Study On Temperature Control System Based On Sg3525
1ST INTERNATIONAL CONFERENCE ON FRONTIERS OF MATERIALS SYNTHESIS AND PROCESSING (FMSP 2017)(2017)
摘要
In this paper, it uses the way of dry bath temperature to heat the microfluidic chip directly by the heating plate and the liquid sample in microfluidic chip is heated through thermal conductivity, thus the liquid sample will maintain at target temperature. In order to improve the reliability of the whole machine, a temperature control system based on SG3525 is designed. SG3525 is the core of the system which uses PWM wave produced by itself to drive power tube to heat the heating plate. The bridge circuit consisted of thermistor and PID regulation ensure that the temperature can be controlled at 37 degrees C with a correctness of +/- 0.2 degrees C and a fluctuation of +/- 0.1 degrees C.
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关键词
temperature control system,control system
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