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Multi-sensors system of physiological signals detected in oral cavity for health care monitoring

用于健康护理监测的口腔生理信号多传感器系统

基本信息

批准号：
09558122
负责人：
MINAMITANI Haruyuki
金额：
$ 3.9万
依托单位：
Keio University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1998
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09558122/
关键词：
Health monitoring Health care Oral temperature sensor Arterial pulse wave sensor pH sensor Pulse oximeter Mouthpiece Telemetering ストレスマウスピースセンサ

项目摘要

Noninvasive, continuous and unrestraint monitoring of physiological informations is necessary for checking human health condition and stress management to prevent illness or sudden death of the aged and young persons on their daily life. We developed a novel sensor system of mouthpiece type which was tightly fixed in the oral cavity and available to simultaneous monitoring of body temperature, arterial pulse wave and salivary pH.LED and photodiode were used for photoplethysmographic arterial wave detection while a thermistor bridge circuit was used for oral temperature measurement. Iridium oxide and Ag/AgGl electrodes were also used for salivary pH detection. These sensors were embedded in the mouthpiece (denture base) which was made of dental resin. These signals were transmitted by PFM-FM wireless telemeter system and were acquisited in a PC processing system, which can be used while at work, sleeping and even at exercise. Possibility of the transmittance was about 15 min circumference.By using the monitoring system, mainly, autonomic function indicators of heart rate variability, respiratory variability, body temperature and salivary secretion related with mental stress and cumulative fatigue were assessed by means of time series analysis as well as spectral analysis under resting and light mental workload. These indicators were compared with subjective questionnaires from which the mental fatigue state can be abstracted well. Availability and effectiveness of the developed multi-sensors system were quite well for continuous monitoring of various physical conditions and health care of personals.

无创、持续、无限制地监测生理信息对于检查人体健康状况和压力管理以防止老年人和青少年在日常生活中生病或猝死是必要的。我们开发了一种新型咬嘴式传感器系统，该系统紧密固定在口腔中，可同时监测体温、动脉脉搏波和唾液pH值。采用LED和光电二极管进行光电体积描记动脉波检测，并采用热敏电阻桥电路进行口腔温度测量。氧化铱和 Ag/AgGI 电极也用于唾液 pH 值检测。这些传感器嵌入由牙科树脂制成的牙套（义齿基托）中。这些信号通过PFM-FM无线遥测系统传输，并被PC处理系统采集，可以在工作、睡眠甚至运动时使用。透过率的可能性约为15 min周长。利用监测系统，主要通过时间序列分析以及静息和轻脑力负荷下的频谱分析来评估与精神压力和累积疲劳相关的心率变异性、呼吸变异性、体温和唾液分泌等自主神经功能指标。这些指标与主观问卷进行比较，可以很好地提取心理疲劳状态。所开发的多传感器系统的可用性和有效性非常适合连续监测各种身体状况和个人健康护理。