Design of PID Temperature Control System for RNA Virus Detection

In the RNA virus laboratory, to realize the characteristics of small temperature fluctuation and high precision in the process of RNA virus detection, a high-precision temperature control system based on a fuzzy PID temperature control algorithm is designed. The system takes MSP430 as the main controller and controls the temperature through the NTC acquisition circuit and TEC-driven circuit. The system first adopts the incremental PID algorithm for preliminary design, second determines the incremental PID parameters, and then obscures the algorithm on this basis to make it an adaptive fuzzy PID algorithm, which further improves the stability and response speed of the system. Finally, through the physical test, the incremental PID algorithm is compared with the adaptive fuzzy PID algorithm, and the design of a fuzzy PID temperature control system for RNA virus detection is realized. The test results show that the system error of the improved fuzzy PID is less than $0.2^{\circ}\mathrm{C}$, the working time is shortened by nearly 70 seconds, and has the characteristics of high precision, fast response speed, and small temperature fluctuation. Through the PID temperature control system for RNA virus detection designed, by comparison, the system has high precision and low-temperature fluctuation and can be well used in RNA virus laboratories.