Prototype analysis of a low-power, small-scale wearable medical device.

Q3 Biochemistry, Genetics and Molecular Biology
Journal of Electrical Bioimpedance Pub Date : 2025-01-04 eCollection Date: 2024-01-01 DOI:10.2478/joeb-2024-0020
Pablo Dutra da Silva, Pedro Bertemes Filho
{"title":"Prototype analysis of a low-power, small-scale wearable medical device.","authors":"Pablo Dutra da Silva, Pedro Bertemes Filho","doi":"10.2478/joeb-2024-0020","DOIUrl":null,"url":null,"abstract":"<p><p>Wearable and portable devices are gaining significant popularity across consumer electronics as well as in medical and industrial fields. To ensure that these devices are both comfortable and appealing to users, they need to have low battery consumption and be compact in both size and weight. The EGluco project is focused on developing a wearable device for non-invasive blood glucose monitoring. This multi-sensor device incorporates electrical bioimpedance spectroscopy as one of its measurement techniques. One of the earlier versions of the device was deemed unsuitable as a wearable due to its large size and high power consumption. To make the device more suitable for wearability, the previous hardware was assessed, and a new design was proposed that simplified the system's power supply and reduced the operating voltage. This article presents two of these designs: an improved Howland current source with a supply voltage of 3.3 V, an output current of 250 <i>μA</i>, and the ability to conduct bioimpedance analysis up to 1 MHz using pulsed DIBS (Discrete Interval Binary Sequence) signals, and an instrumentation amplifier with the same supply voltage as the current source, a voltage gain of four, and a slew rate of 150 <i>V/μs</i>. By simplifying the power supply and implementing other changes, the device's size was reduced to a single 5 × 5 cm circuit board, compared to the previous configuration of four separate boards connected by cables.</p>","PeriodicalId":38125,"journal":{"name":"Journal of Electrical Bioimpedance","volume":"15 1","pages":"169-176"},"PeriodicalIF":0.0000,"publicationDate":"2025-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11699846/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Electrical Bioimpedance","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.2478/joeb-2024-0020","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2024/1/1 0:00:00","PubModel":"eCollection","JCR":"Q3","JCRName":"Biochemistry, Genetics and Molecular Biology","Score":null,"Total":0}
引用次数: 0

Abstract

Wearable and portable devices are gaining significant popularity across consumer electronics as well as in medical and industrial fields. To ensure that these devices are both comfortable and appealing to users, they need to have low battery consumption and be compact in both size and weight. The EGluco project is focused on developing a wearable device for non-invasive blood glucose monitoring. This multi-sensor device incorporates electrical bioimpedance spectroscopy as one of its measurement techniques. One of the earlier versions of the device was deemed unsuitable as a wearable due to its large size and high power consumption. To make the device more suitable for wearability, the previous hardware was assessed, and a new design was proposed that simplified the system's power supply and reduced the operating voltage. This article presents two of these designs: an improved Howland current source with a supply voltage of 3.3 V, an output current of 250 μA, and the ability to conduct bioimpedance analysis up to 1 MHz using pulsed DIBS (Discrete Interval Binary Sequence) signals, and an instrumentation amplifier with the same supply voltage as the current source, a voltage gain of four, and a slew rate of 150 V/μs. By simplifying the power supply and implementing other changes, the device's size was reduced to a single 5 × 5 cm circuit board, compared to the previous configuration of four separate boards connected by cables.

低功耗、小型可穿戴医疗设备的原型分析。
可穿戴和便携式设备在消费电子产品以及医疗和工业领域越来越受欢迎。为了确保这些设备既舒适又吸引用户,它们需要低电池消耗,体积和重量都要紧凑。EGluco项目的重点是开发一种可穿戴设备,用于无创血糖监测。这种多传感器装置将电生物阻抗光谱作为其测量技术之一。该设备的早期版本之一被认为不适合穿戴,因为它的体积大,功耗高。为了使器件更适合于可穿戴性,对之前的硬件进行了评估,并提出了简化系统电源和降低工作电压的新设计。本文介绍了其中的两种设计:一种改进的Howland电流源,其供电电压为3.3 V,输出电流为250 μA,能够使用脉冲DIBS(离散间隔二进制序列)信号进行高达1 MHz的生物阻抗分析;另一种仪表放大器,其供电电压与电流源相同,电压增益为4,转换速率为150 V/μs。通过简化电源和实施其他变化,该设备的尺寸缩小到单个5 × 5厘米的电路板,而不是以前的配置,四个独立的板通过电缆连接。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
Journal of Electrical Bioimpedance
Journal of Electrical Bioimpedance Engineering-Biomedical Engineering
CiteScore
3.00
自引率
0.00%
发文量
8
审稿时长
17 weeks
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信