Design Of Cylinder Wireless Transmission Network System Based On Wi-Fi

Since the twenty-first century,the rapid development of wireless technology had not only changed people’s lives,but also led to a revolutionary change in industrial automation technology.With the application of intelligent manufacturing in the field of pneumatic,demand is increasing for pneumatic systems high speed wireless transmission.Wi-Fi as the most widely used short-range high-speed wireless transmission solutions,began to gradually enter the field of industrial pneumatic.Pneumatic scene had strict technical specifications for real-time data transmission,including high communication speed and low communication delay in real-time requirements.Therefore,it was very necessary to research and design a pneumatic transmission network system based on high-speed wireless communication technology for aerodynamic control demand.In this paper,the working principle of pneumatic system and the characteristics of pneumatic actuator cylinder were analyzed,and the design requirements of the project was clarified.Through the investigation of the present situation of wireless communication technology,comparative analysis of technical characteristics,finally,the technical route of using Wi-Fi as the cylinder wireless transmission network system was determined.On this basis,the thorough research was carried on.The main research contents were as follows:(1)Through the comparison of the network topology structure and the characteristics of the Wi-Fi protocol stack,the system framework was established,and the overall design scheme of the system was determined.According to the state transition probability,the Markov mathematical simulation model was established for the communication process of the system.Through the MATLAB software,the simulation analysis was carried out,and the communication delay expectation was further calculated.It provided the reference for the research of this subject and the research in related fields.(2)The hardware architecture of the "dual core" was defined,the hardware circuit of the system was designed by using PCB software Altium Designer,and the construction of the experimental platform was completed,including the selection of the dual master control chip,the design of the node unit circuit,the design of the separate Wi-Fi module,the design of the download module and the design of the adapter board.(3)The Eclipse software with integrated Wi-Fi kernel SDK and Keil software for embedded programming respectively implemented the design of Wi-Fi transmission control program and node unit processing program,and completed the communication protocol.In order to guarantee the high communication rate,low delay and high reliability of communication,different control strategies were adopted for different transmission modes.The corresponding control algorithm was researched and designed,and the transmission scheme was optimized,and good results were obtained.(4)Based on the hardware experiment platform,Wi-Fi communication under different experimental environment,configuration condition,transmission mode and control scheme was tested.By changing the experimental parameters,the variation curve of the communication delay on each influencing factor was obtained.A large number of experiments provided feedback for the design of the application and facilitated the iterative optimization of the software.The experimental results also validated the feasibility and high reference value of the Cylinder Wi-Fi wireless transmission network system.