Development of a Multisensory Wearable System for Monitoring Cigarette Smoking Behavior in Free-Living Conditions
Development of a Multisensory Wearable System for Monitoring Cigarette Smoking Behavior in Free-Living Conditions
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DOI：
10.3390/electronics6040104
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发表时间：
2017-12-01
期刊：
影响因子：
2.9
通讯作者：
Sazonov, Edward
中科院分区：
文献类型：
--
作者：
Imtiaz, Masudul Haider;Ramos-Garcia, Raul I.;Sazonov, Edward
本文介绍了一种新的多传感器可穿戴系统（个人自动香烟跟踪器V2或PACT2.0）的开发和验证，用于监测自由生活条件下的吸烟情况。PACT2.0系统的贡献是：（1）实现了一个完整的传感器套件，用于监测吸烟的所有主要行为表现（2）传感器硬件的小型化以使其能够在自然环境中适用;以及（3）引入可以提供对吸烟行为的额外洞察的新传感器模态，全球定位系统（GPS）、计步器和心电图（ECG）或提供易于使用的替代方案（例如，生物阻抗呼吸传感器）到传统传感器。PACT2.0由三个定制设备组成：一个仪表打火机，一个手部模块和一个胸部模块。仪表打火机能够记录所有照明事件的时间和持续时间。手部模块集成了惯性测量单元（IMU）和射频（RF）发射器来跟踪手到嘴的手势。该模块还作为计步器运行。胸部模块监测呼吸（烟雾吸入）模式（感应和生物阻抗呼吸传感器）、心脏活动（ECG传感器）、胸部运动（三轴加速度计）、手到嘴的接近度（RF接收器），并捕获受试者的地理位置（GPS接收器）。在台架试验和实验室实验中评估了PACT2.0传感器的准确性。在对40名吸烟者进行的24小时研究中，验证了在社区中使用PACT2.0进行数据收集。943小时的记录数据，98.6%的数据被发现可用于计算机分析。记录的信息包括549次照明事件、522/504支消耗的香烟（分别来自打火机数据/自记录数据）、20，158/22，207个手到嘴的手势（分别来自手IMU/接近传感器）和114，217/112，175次呼吸（分别来自呼吸感应体积描记器（RIP）/生物阻抗传感器）。在研究后可接受性调查中，申报系统的评分为8.3 +/- 0.31（满分10分）。结果表明，PACT2.0为社区吸烟行为研究提供了一个可靠的平台。
This paper presents the development and validation of a novel multi-sensory wearable system (Personal Automatic Cigarette Tracker v2 or PACT2.0) for monitoring of cigarette smoking in free-living conditions. The contributions of the PACT2.0 system are: (1) the implementation of a complete sensor suite for monitoring of all major behavioral manifestations of cigarette smoking (lighting events, hand-to-mouth gestures, and smoke inhalations); (2) a miniaturization of the sensor hardware to enable its applicability in naturalistic settings; and (3) an introduction of new sensor modalities that may provide additional insight into smoking behavior e.g., Global Positioning System (GPS), pedometer and Electrocardiogram(ECG) or provide an easy-to-use alternative (e.g., bio-impedance respiration sensor) to traditional sensors. PACT2.0 consists of three custom-built devices: an instrumented lighter, a hand module, and a chest module. The instrumented lighter is capable of recording the time and duration of all lighting events. The hand module integrates Inertial Measurement Unit (IMU) and a Radio Frequency (RF) transmitter to track the hand-to-mouth gestures. The module also operates as a pedometer. The chest module monitors the breathing (smoke inhalation) patterns (inductive and bio-impedance respiratory sensors), cardiac activity (ECG sensor), chest movement (three-axis accelerometer), hand-to-mouth proximity (RF receiver), and captures the geo-position of the subject (GPS receiver). The accuracy of PACT2.0 sensors was evaluated in bench tests and laboratory experiments. Use of PACT2.0 for data collection in the community was validated in a 24 h study on 40 smokers. Of 943 h of recorded data, 98.6% of the data was found usable for computer analysis. The recorded information included 549 lighting events, 522/504 consumed cigarettes (from lighter data/self-registered data, respectively), 20,158/22,207 hand-to-mouth gestures (from hand IMU/proximity sensor, respectively) and 114,217/112,175 breaths (from the respiratory inductive plethysmograph (RIP)/bio-impedance sensor, respectively). The proposed system scored 8.3 +/- 0.31 out of 10 on a post-study acceptability survey. The results suggest that PACT2.0 presents a reliable platform for studying of smoking behavior at the community level.