An application study of an STM32-based control system for low-temperature shock therapy

GuoWei Jiang; Jinjiang Cui; Jiangen Xu; Hualiang Zhang

doi:10.1117/12.2671447

28 April 2023 An application study of an STM32-based control system for low-temperature shock therapy

GuoWei Jiang, Jinjiang Cui, Jiangen Xu, Hualiang Zhang

Proceedings Volume 12610, Third International Conference on Artificial Intelligence and Computer Engineering (ICAICE 2022); 126104C (2023) https://doi.org/10.1117/12.2671447
Event: Third International Conference on Artificial Intelligence and Computer Engineering (ICAICE 2022), 2022, Wuhan, China

Abstract

The coolant liquid nitrogen, which is commonly used in medical treatment at present, is prone to frostbite and vaporization, and the greenhouse effect of Freon is serious. With the high-speed development of CO2 liquid storage technology, we design an STM32-based control system for cryogenic shock therapy using CO2 as coolant. The control system uses STM32F103RCT6 microcontroller as the core processor with modular design, including main control module, infrared temperature measurement module, human-computer interaction module, serial communication module, control output module, power supply module and so on. The modules work together to realize the functions of serial communication, real-time temperature monitoring, solenoid valve start-stop control, etc. The distance between the nozzle and the cooling substrate and the effective area of cooling are studied quantitatively by experiment under the straight tube type nozzle with 0.5mm inner diameter and 4cm length model. The results show that the control system is stable and practical, and the ideal distance between the 0.5mm*4cm nozzle and the cooling substrate is 30mm for the best cooling effect, and the effective range is the ellipse area of 1.8cm for the long half-axis and 0.9cm for the short half-axis, which provides a reference for clinicians to perform spray treatment operation on the damaged tissue epidermis of patients.

Citation Download Citation

GuoWei Jiang, Jinjiang Cui, Jiangen Xu, and Hualiang Zhang "An application study of an STM32-based control system for low-temperature shock therapy", Proc. SPIE 12610, Third International Conference on Artificial Intelligence and Computer Engineering (ICAICE 2022), 126104C (28 April 2023); https://doi.org/10.1117/12.2671447

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KEYWORDS

Control systems

Temperature metrology

Nozzles

Infrared radiation

Thermography

Control systems design

Microcontrollers

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