title: A Wearable Healthcare System With a 13.7 μA Noise Tolerant ECG Processor.
abstract: To prevent lifestyle diseases, wearable bio-signal monitoring systems for daily life monitoring have attracted attention. Wearable systems have strict size and weight constraints, which impose significant limitations of the battery capacity and the signal-to-noise ratio of bio-signals. This report describes an electrocardiograph (ECG) processor for use with a wearable healthcare system. It comprises an analog front end, a 12-bit ADC, a robust Instantaneous Heart Rate (IHR) monitor, a 32-bit Cortex-M0 core, and 64 Kbyte Ferroelectric Random Access Memory (FeRAM). The IHR monitor uses a short-term autocorrelation (STAC) algorithm to improve the heart-rate detection accuracy despite its use in noisy conditions. The ECG processor chip consumes 13.7 μA for heart rate logging application.
authors.forename: Shintaro
authors.initials: S
authors.lastname: Izumi
authors.forename: Ken
authors.initials: K
authors.lastname: Yamashita
authors.forename: Masanao
authors.initials: M
authors.lastname: Nakano
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Kawaguchi
authors.forename: Hiromitsu
authors.initials: H
authors.lastname: Kimura
authors.forename: Kyoji
authors.initials: K
authors.lastname: Marumoto
authors.forename: Takaaki
authors.initials: T
authors.lastname: Fuchikami
authors.forename: Yoshikazu
authors.initials: Y
authors.lastname: Fujimori
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Nakajima
authors.forename: Toshikazu
authors.initials: T
authors.lastname: Shiga
authors.forename: Masahiko
authors.initials: M
authors.lastname: Yoshimoto
mesh_terms: D000328:Adult; D000465:Algorithms; D003020:Clothing; D015716:Electrocardiography, Ambulatory / Q000295:instrumentation*; D004867:Equipment Design; D006339:Heart Rate / Q000502:physiology; D006801:Humans; D008297:Male; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D017216:Telemedicine / Q000295:instrumentation*; D055815:Young Adult