| Now, embedded system which is widely applied in the fields of Information Appliance, mobile device, network device, industrial control and medical instrument has a prosperous future. People have an urgent demand of embedded system with high capability as embedded device is widely used in people's daily life. So it is significant to study the key technologies of embedded system.With the development of rehabilitation manipulator as the background of studying and combining the key technologies of embedded system, the paper mainly describes the design of embedded Linux operating system and the research on control software based on MiniGUI.Through studying the situation of the development of embedded system, particularly analysing the characteristics and processes of the developing and combining the advantages of Linux, the author choosed Linux as embedded operating system and finished building the platform of software through compiling and installing bootloader, reducing kernel and making file system. At the same time, the author built the cross-compiling circumstance on PC.Through the analysis of advantages and disadvantages of several typical GUI systems under embedded Linux, the author choosed light-weight MiniGUI as developing supporting system which is open to embedded application. Based on the analysises of MiniGUI, the framework of recovering hand's software was designed by modules. The author finished the design of user interface based on MiniGUI, syncretized motor control, data sampling and saving and other mudules into Graphic User Interface. And it could control the range, force and velocity of joints precisely, sample real-time data.Finally, the software of embedded system was successfuliy transplanted from PC to target board, which proves it has good capacity of transplant. To different parameters, the author did a lot of experiments through online test. And it verifies that the design of the software is reliable and reasonable. |
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