| The modern electronic information technique moves on so fast that a lot of new applications based on it were produced, Especially, Whose application combined electronic with other techniques. For example, in medical apparatus area, the efficiency and accuracy of equipment's diagnosis and therapy were promoted a lot after it fused with electronic technology. The result is that many electronic people start to realize the development space of medical electric.What deserves to be mentioned is that embedded system was an outstanding direction in state-of-the-art electronic technology, whose application on medical electronic area has been very popular. The subject of this paper is mainly about designing and developing monitor equipment with Linux operating system and Qt/embedded graphic user interface. The main work is software development, which based on Linux operating system and Qt graphic user interface. The development procedure include:building cross-compiled environment in PC, compiling and transplanting operating system boot loader program Bootstrap and U-boot, compiling and transplanting Linux 2.6.27 kernel, making and transplanting Qt and root file system, coding Linux USB HOST and USB DEVICE module drivers, coding application program of monitor equipment under Qt graphic user interface.At last, the result of the design should realize that Linux operating system with loaded file system should run successfully on ARM9. After that, application program of monitor equipment should be executed. In which, its sub-thread will use coded USB HOST and USB DEVICE drivers in Linux to drive ARM9 USB HOST Port to get ECG (electrocardiogram) data from SD Card of the front AMR7 microcontroller and drive ARM9 USB DEVICE Port to transport ECG data to PC, at the same time, display ECG waveform, heart rate, pulse rate, respiratory rate, body temperature and blood pressure on screen. |
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