title: A power-efficient bio-potential acquisition device with DS-MDE sensors for long-term healthcare monitoring applications.
abstract: This work describes a power-efficient bio-potential acquisition device for long-term healthcare applications that is implemented using novel microelectromechanical dry electrodes (MDE) and a low power bio-potential processing chip. Using micromachining technology, an attempt is also made to enhance the sensing reliability and stability by fabricating a diamond-shaped MDE (DS-MDE) that has a satisfactory self-stability capability and superior electric conductivity when attached onto skin without any extra skin tissue injury technology. To acquire differential bio-potentials such as ECG signals, the proposed processing chip fabricated in a standard CMOS process has a high common mode rejection ratio (C.M.R.R.) differential amplifier and a 12-bit analog-to-digital converter (ADC). Use of the proposed system and integrate simple peripheral commercial devices can obtain the ECG signal efficiently without additional skin tissue injury and ensure continuous monitoring more than 70 hours with a 400 mAh battery.
authors.affiliation: Instrumentation Chip Group, Department of Electric Engineering, National Cheng Kung University, Tainan 701, Taiwan. n2895160@mail.ncku.edu.tw
authors.forename: Chia-Lin
authors.initials: CL
authors.lastname: Chang
authors.forename: Chih-Wei
authors.initials: CW
authors.lastname: Chang
authors.forename: Hong-Yi
authors.initials: HY
authors.lastname: Huang
authors.forename: Chen-Ming
authors.initials: CM
authors.lastname: Hsu
authors.forename: Chia-Hsuan
authors.initials: CH
authors.lastname: Huang
authors.forename: Jin-Chern
authors.initials: JC
authors.lastname: Chiou
authors.forename: Ching-Hsing
authors.initials: CH
authors.lastname: Luo
mesh_terms: D000703:Analog-Digital Conversion; D003695:Delivery of Health Care; D017097:Electric Impedance; D011211:Electric Power Supplies; D004562:Electrocardiography / Q000295:instrumentation; D004566:Electrodes; D004867:Equipment Design; D006801:Humans; D055617:Micro-Electrical-Mechanical Systems / Q000295:instrumentation*; D008991:Monitoring, Physiologic / Q000295:instrumentation*; D012815:Signal Processing, Computer-Assisted; D012867:Skin