Study on Temperature Control System Based on SG3525

1st International Conference on Frontiers of Materials Synthesis and Processing

材料科学;化学

Cheng, Cong^1 ; Zhu, Yifeng^1 ; Wu, Junfeng^2

School of Electronics and Information Engineering, Changchun University of Science and Technology, Changchun

130022, China^1

State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun

130022, China^2

关键词: Bath temperatures;    Drive power;    Heating plates;    Liquid sample;    Microfluidic chip;    Target temperature;    Whole machine;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/274/1/012061/pdf
DOI  :  10.1088/1757-899X/274/1/012061

学科分类：材料科学（综合）

来源: IOP

【 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 °C with a correctness of ± 0.2 °C and a fluctuation of ± 0.1 °C.