Abstract: Long-term collection of human ECG via using wearable devices can provide important information for prevention of chronic diseases and monitoring postoperative rehabilitation of diseases, as well as alleviate the social medical pressure brought by aging population. Therefore, relevant researches have become a hot topic in recent years. However, there are a series of problems in the wearable devices for long-term ECG collection, such as electrode materials and motion artifact interference, etc. Hence, the paper summarized the key techniques of long-term ECG collection in three aspects, i.e., the principle of ECG collection, electrode materials and motion artifact suppression.

Key words: dynamic electrocatdiogram; wearable; textile electrodes; motion artifact