High resolution 16-channel ECG tester simulator for online digital-to-analogue conversion of data from PC

Recent design of electrocardiographic simulators should be consistent with the international standard IEC 60601-2-47 issued 2012, which recommends the measurements, detections and interpretative statements of the ECG to be tested by digitized ECGs signals taken from five standard databases. In accordance to this recommendation we designed a high-resolution EGG tester simulator for direct digital-to-analogue conversion of data from PC. The signals selected from a database are sent from the PC to the Simulator via USB. The prototype has 16 independent channels, high sampling frequency of 2 kHz, and 286 nVlbit amplitude respond of the analogue output. The power-line interference is minimized by a galvanic isolation of the communication between the PC and the simulator. The need of build-in circuit for a Wilson Gentral Terminal is avoided by the use of 12-Standard-leads to 8-primary-Ieads transfer formulas. In-house PC software in Visual G is developed to select and control the operation mode of the simulator. The transmitted signals are real-time visualized on the PC monitor.