ABSTRACT
In this thesis,the method of the cause of making the digital ECG signal generator is specially introduced . The digital ECG signal generator is based on MSP430F149 SCM . Users can easily get any type of ECG by pressing the button and by the information shown on the LCD.
The system consists of human-machine interface,128M flash memory , USB convey channel , D/A convertor and post processing channel . The system not only generates the normal simulated ECG signals and abnormal simulated ECG signals , but also can read back(回放) the real patients’ ECG signals . And system may be yields ECG signals to which sina wave and other disturbance may be added . Users can use PC to load the ECG data ,which have been sampled by other ways, in the 128M flash memory through the USB channel . This indicates the universal capability of the system , so that the requirement of various ECG analysis and device development can be satisfied.
The system realizes the generating of the simulated ECG signals by processing of an array of ECG data , and realizes the real patients’ ECG signals by timely read the data from the flash memory . It also can generate the ECG signals to which sina wave and other disturbance may be added , by add the ECG data with noise data and other disturbance data.
【keywords】 ECG data , MSP430F149 , digital ECG signal generator