Research And Development Of FECG Acquisition And Processing Platform

As a non-invasive method of fetal monitoring，fetal Electrocardiogram (FECG) in recentyears begun to enter the field of fetal monitoring, domestic and foreign scholars have done alot of researches in the extraction and separation of the FECG, and a variety of differentmethods were proposed. With the development of electronic technology, the emergence of anew weak signal acquisition technology and analog to digital converter chip improve theweak signal acquisition capabilities and the accuracy of analog-digital conversion. Meanwhile,The new processing chip greatly improve the performance of the acquisition and dataprocessing device to cope with more complex control and computing tasks, and provide thepossibility for a variety of FECG extraction method. On the other hand, high-performancehardware-based software architecture reduces the difficulty of development, and improves thedevelopment efficiency Significantly. A unified interface is easy to form a common standardfor such devices to upgrade. Based on the analysis of the mainstream methods of FECGextraction, a fetal ECG extraction and processing platform based on the NXP LPC2368central control processing chip and Texas Instruments TMS320C6713digital signalprocessing chip is created by this paper. What’s more, automatic scheduling of device controltasks is made by uC/OS-II embedded in the platform control module. In the data processingmodule on the platform, the FECG processing software architecture is embedded in, and thisarchitecture provides the modular operation of the algorithm, including the amendment,replace and delete in the subsequent algorithm update.