Research Andapplication Of Fermentation Process Control System Based On ARM

Fermentation industry is important component of modern biological technology. The applied the embedded system to biological process control field, which not only can reduce peripherals, reduce the cost, improve real-time and reliability of the system, and also improve the fermentation equipment automation degree.Fermentation process itself is a kind of complex, highly nonlinear, time-varying of biochemical reaction process and with a lot of control variables, so that it will meet a lot of bottleneck to carry on the effective control with traditional control method. Therefore, according to the characteristics of the fermentation process and summarizing the domestic and foreign relevant research, this design introduced intelligent control technology into the fermentation process control based on complex, time-varying, nonlinear fermentation process.The temperature, PH and DO control algorithm was studied in the fermentation process. This article respectively designed temperature composite fuzzy control and PH parameter self-setting PID control, then through the simulation and example analysis, verify the validity of the intelligent control algorithm.According to the requirements of fermentation control, the design of the control hardware platform used S3C2410 of embedded chip system based on ARM920T kernel as the core. On this basis, it designed the outer interface circuit and control input/output channels. Peripheral interface circuit include the choice of the controller, memory interface circuit, the power supply circuit, serial interface circuit and the USB interface circuit. Input/output channels include input conversion circuits, analog output channel and digital output channel.Embedded operating system choosed Windows CE operating system, given the Windows CE system customization of method and transplantate embedded real-time operating system Window CE.Then according to the destination device config the corresponding. And on this basis, according to the characteristics of fermentation process control system, the system driver needs given further analysis.Taking ADC driver as an example, deeply analyse development of the Windows CE device driver.The under machine monitoring software of the embedded fermentation control system used the EVC interface development tools. The realization of monitoring software function include the collecting the data of communication function, system fault alarm function, the realization of the control algorithm, real-time control, real-time and historical data show. The human machine interface has beautiful interface, strong interactivity, convenient operation requirements and good realized the remote monitoring.