Research On Rubber & Plastics Machine Multifunctional Human-Machine Interface

At present, the industry of rubber & plastic machine in domestic develops fast. The HMI(Human-Machine Interface) with good functions and performance can improve maneuverability, productivity and market competitiveness of rubber & plastic machine. To realize the requirements of rubber & plastic machine HMI, the function in hardware and software of the HMI system is analyzed and a scheme based on ARM9 S3C2410 and embedded Linux is put forward to achieve its requirements. The key technology in both hardware and software of the HMI system is studied, and at last, the HMI system of rubber & plastic machine is debugged on injection molding machine. The HMI system of rubber & plastic machine studied by the thesis is multifunctional, low in cost, convenient in maintenance and easy to be updated. As general HMI, this system can be applied in similar workplace.This thesis consists of six sections:Chapter 1, the concept of HMI and its design principles is expounded, and the advanced technologies, development trend and application in rubber & plastic machine of HMI are introduced. And then the character and advantage of embedded system based on embedded operation system and embedded microprocessor are introduced. At last, the source and objective of the project is introduced, the scheme based on ARM9 S3C2410 and embedded Linux are put forward and research content to implement the scheme is analyzed.Chapter 2, hardware realization details of HMI controller is expounded. At first, according to the research objective, the requirement on hardware of HMI is analyzed. The overall hardware scheme is expounded and all the hardware modules are illustrated later. Finally the effort on signal integrity and anti-jamming in making high-speed and high-frequency PCB done by this thesis are introduced.Chapter 3, overall software structure of HMI controller is introduced and the content of system software is analyzed. At first, the start up flow and porting process of U-Boot are analyzed. Then the porting process of embedded Linux kernel, Ethernet microchip CS8900A driver program and YAFFS file system diver program are expounded. At last, development of driver program of buzzer, buttons, IIC interface memory and CAN field bus are introduced.Chapter 4, at first, the working flow of rubber & plastic machine is introduced. And then the overall functions of HMI and development of each module of application software are analyzed and illustrated, including Linux startup and configuration shell script, GUI program based on Qt, porting of embedded web server Boa and Linux root file system.Chapter 5, the work of system hardware and software debugging is introduced. And debugging with injection molding machine controller, the performance of HMI is tested.Chapter 6, is a summary of the whole research work. The main achievements of this thesis are mentioned and the conceit of the further developing work is pointed out.