Design And Development Of Measurement And Control System For Hydrogen Production By Water Electrolysis

At present,the problems of resource shortages and environmental pollution in countries around the world are becoming increasingly serious.Traditional fossil energy sources such as coal and petroleum have been depleted.Hydrogen energy will become the most important secondary energy source on the world energy stage in the 21 st century due to its clean and efficient characteristics.Hydrogen production,storage,transportation,and application technology will also become the focus of people's attention.The principle of producing hydrogen by electrolyzed water is simple,and the purity of the product hydrogen is high.It is one of the currently mature and widely used methods.Because the production of hydrogen has certain risks,the realization of automatic control and real-time monitoring of the process status of each link are important measures to ensure the safety of the equipment.With the popularity of the network and the maturity of related technologies,connecting manufacturing equipment to the Internet of Things can provide stable,accurate,and safe technical guarantees,making it easier to complete equipment deployment tasks..For the current most of the domestic and foreign electrolysis water hydrogen production equipment are controlled by PLC,there are problems of high cost and large power consumption.This paper uses embedded technology to take the STM32F407 single-chip microcomputer as the control core,and combines the Internet of Things technology to conduct an electrolyzed water hydrogen production measurement and control system Design and Development.The thesis first studies the process flow of hydrogen production from electrolyzed water,analyzes the detection parameters and controlled parameters,and designs the overall scheme of the measurement and control system.Then the system hardware design is carried out,the equipment selection,the circuit schematic design of each functional module of the control board and the PCB design are completed.Secondly,the control algorithm of the hydrogen production pressure control system is studied,and the effects of traditional PID and fuzzy PID control are analyzed and compared through MATLAB software simulation,and the design of the system software and monitoring platform is completed.System software design includes transplanting u C/OS operating system to achieve multi-task operation,designing the main program of acquisition control,communicating with MCGS touch screen through Modbus?RTU protocol,transplanting Lwip protocol stack to connect STM32 to the network,and China Mobile Internet of Things through TCP transparent transmission protocol OneNET cloud platform communication.Finally,a simulation device for hydrogen production from electrolyzed water was built,and an overall test was conducted on the on-site touch screen monitoring platform,the B/S architecture Java Web remote monitoring platform and the measurement and control system to find and solve the problem.This design measurement and control system finally realized on-site and remote acquisition of real-time data,data management and processing,and efficient and accurate monitoring of the device.The system has relevant interfaces for secondary development and application.