Development of ECG Holter Based on SD Card / 医疗卫生装备

ABSTRACT

Objective To design a holter, which can record ECG for long time. Methods SD(secure digital) card was adopted as mass storage medium. The preprocessed ECG signals were converted into digital data which were stored temporarily into SD card by the USB-2.0-spicified microcontroller CY7C68013A. Results SPI bus was introduced for data communication between the host and SD card. The LCD module was utilized to display the menu and states of the system. The data stored in SD card were transmitted to a PC via the USB, or read by a specified card reader.1 GB SD card could record for about one month. Conclusion The portable design of this device is convenient for outgoing.