An Energy-Efficient Wearable Functional Near-infrared Spectroscopy System Employing Dual-level Adaptive Sampling Technique

Chen, Cheng; Ma, Zhouchen; Liu, Zhenhong; Zhou, Linfeng; Wang, Guoxing; Li, Yongfu; Zhao, Jian

doi:10.1109/tbcas.2022.3149766

Cited by 10 publications

(1 citation statement)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, a 16-channel analog front-end application specific integrated circuit (AFE ASIC) using time division multiplexing (TDM) technology shares a second stage amplifier among eight channels, solving the impedance mismatch problem at low voltage [ 45 ]. Such a design is widely used in EEG and photoplethysmography (PPG) monitoring [ 46 ], infrared spectroscopy monitoring [ 47 ], and has the prospect of being applied to various biosensors [ 59 ]. The chopper stabilization technique is a traditional and effective amplifier linearization boosting technique that amplifies the signal by modulating it to a higher frequency free of noise, and then demodulates the amplified signal back to the baseband to reduce low-frequency noise [ 48 ].…”

Section: Signal Conditioningmentioning

confidence: 99%

Progress in Data Acquisition of Wearable Sensors

Liu

Kong

et al. 2022

Biosensors

View full text Add to dashboard Cite

Wearable sensors have demonstrated wide applications from medical treatment, health monitoring to real-time tracking, human-machine interface, smart home, and motion capture because of the capability of in situ and online monitoring. Data acquisition is extremely important for wearable sensors, including modules of probes, signal conditioning, and analog-to-digital conversion. However, signal conditioning, analog-to-digital conversion, and data transmission have received less attention than probes, especially flexible sensing materials, in research on wearable sensors. Here, as a supplement, this paper systematically reviews the recent progress of characteristics, applications, and optimizations of transistor amplifiers and typical filters in signal conditioning, and mainstream analog-to-digital conversion strategies. Moreover, possible research directions on the data acquisition of wearable sensors are discussed at the end of the paper.

show abstract