The Research Of Embedded GUI And Its Application On Construction Machinery Control System

Human Machine Interface technology has become one of the hot issue of software engineering research. As a core content, Graghic User Interface interacts with users through its rich graphic/image imformation and direct expression. Embedded Graghic User Interface is an important component part of Embedded Real-Time OS. Along with the developing of hardware platform tehnology and the expanding of embedded system applied range, the importance of embedded GUI system has become prominent. In the field of internal construction machinery, more and more companies begin to adopt GUI to develop their control system, which give full scope to their advantages.This paper gives a thorough analysis of the embedded GUI design flow and major technique, accomplishs the key part-Graghic Device Interface concretely, and finally develops a set of powerful, elegant embedded GUI for the actual construction machinery project by combining the embedded GUI kits. At first, specific to embedded GUI, this paper gives the demand analysis and the description of mainstream GUI, then lists the detailed arithmetic flow and code which is oriented to the multi-task communication part. In the next part, we study the system GDI in-depth, and implement its basic drawing module, text module and I/O layer. After that, we build a embedded Linux OS on PC104 board, including bootloader, kernel transplanting and file system construction, on which we configure and install MiniGUI to develop GUI according to the construction machinery project, with the input engine been transplanted. In the last chapter, we test the accomplished embedded GUI system by using self-writing software and professional tools. Via comparing with other embedded GUI, we verify its validity.The embedded GUI based on construction machinery control system has been proved to be meet the actual requirement. Furthermore, its stability, liability and function-fullfill performs very well in the following system integrating, combining and running stage. It is also an evidence for the excellent practicability and the application foreground of the production in this paper.