A method to detect heart rate based on electrical bio-impedanceKun-Yang Li, Wen-Hui Chen, Lian-Rong Zheng, Shan-Qing Wang, Xian-Ming Li and Guan-Zheng LiuITM Web Conf., 7 (2016) 09014DOI: https://doi.org/10.1051/itmconf/20160709014