Design Of Multi-parameter Monitoring System Based On Embedded Linux + QT

With the rapid development of hardware and software technologies,and the integration of interdisciplinary knowledge,new applications have emerged endlessly.The combination of the traditional medical industry with electronics and computer technology has greatly facilitated medical personnel and users,not only improving the efficiency of monitoring and diagnosis Precision,but also slowly into the normal family life.Embedded system application technology can be seen everywhere in today's life,especially the combination with the monitor has been very common.The research content of this project is mainly to apply the technology of embedded Linux + QT to the development of multi-parameter monitor system.The open source features of Linux and QT not only reduce development costs,but also reduce development difficulty to a certain extent.The development process has the following points:(1)The PC-side cross-compilation environment is built to prepare for the subsequent embedded transplantation development;cutting and transplanting the Linux kernel,system boot program u-boot,root file system and QT and other auxiliary libraries,with the monitor hardware system to achieve preliminary monitoring.(2)Remote PC-side monitoring software system design and mobile Android-side APP design solve the limitation of fixed-point collection,realize multi-mode monitoring,and provide specifications for later application development.(3)Write the monitor application program system to realize the data monitoring of blood oxygen,blood pressure,electroencephalogram,electrocardiogram,respiration,temperature,invasive blood pressure and carbon dioxide module at the end of breath.The entire embedded system interface is mainly implemented by the following threads: the main thread is responsible for the operation of the entire application framework;the collection thread is responsible for data collection,processing the data into waveform data and real-time parameters after analysis;the analysis playback thread is responsible for storing the data Play back the display again.Final realization effect: Successfully run Linux 3.0.15 kernel operating system on the Exynos4412 main control board,and realize the operation of Qt application program based on Qt5.7,realize the data acquisition waveform display on the 7.2 inch LCD touch screen;Wi Fi module realizes data transfer To the upper computer of the PC,and the upper computer can also control the monitor at the same time;the BLE Bluetooth module realizes the APP communication with the Android mobile terminal.