In this paper, the application of 霤/OS-II, one of the real-time oper ation systems (RTOS), to ECG tele-monitoring system based on mobile communicatio n is introduced. The system is composed of monitoring terminals and a monitoring center. The terminals have functions such as ECG data acquisition and storage, real-time data analysis, keyboard input, LCD display, system monitor and automat ic transmission of abnormal ECG data to the monitoring center through mobile com munication network. Because these functions are not executed simultaneously, mul ti-task management is adopted instead of single task management. In Rabbit2000 m ain controller, 霤/OS-II is applied to multi-task management.

This paper presents the principles and the specific circuits of a multifunction generator of ECG signal.It discusses the choice of oarameter of all the circuits included in the small instrument.This instrurrent has been made into prototype and came-into use.

This paper presents a new method for QRS complex self-assortment based on mathematical morphology, which measures the comparability of QRS complex with weighted Hausdorff distance. Beginning with the traditional Hausdorff distance, this paper introduces the weighted Hausdorff distance of planar object and the detailed algorithm of self-assortment of QRS complex. The evaluation results of this algorithm by MIT-BIHECG database show that this method has high self-assortment capability.