Monitoring of atopic dermatitis using leaky coaxial cable.
Monitoring of atopic dermatitis using leaky coaxial cable.
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DOI：
10.1049/htl.2017.0021
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发表时间：
2017-12
影响因子：
2.1
通讯作者：
Abbasi QH
中科院分区：
文献类型：
--
作者：
Dong B;Ren A;Shah SA;Hu F;Zhao N;Yang X;Haider D;Zhang Z;Zhao W;Abbasi QH
在日常生活中，不经意的抓挠可能会增加皮肤病（如特应性皮炎等）的严重程度。然而，人们很少关注这件事，因此已知的运动测量行为也很少。尽管如此，抓挠的行为和频率代表了瘙痒的程度，抓挠频率的分析有助于医生的临床剂量。在这封信中，提出了一种新的系统来监测夜间睡眠人体的抓挠运动。该系统的核心设备只是一个泄漏同轴电缆（LCX）和路由器。在无线通信中，LCX通常用于盲场或半盲场。新的思路是将泄漏电缆放置在床上，然后获取无线通信信道物理层的状态信息，以识别人类睡眠过程中的抓挠动作和其他身体小动作。实验结果表明，该方法可以有效地检测运动及其持续时间。信道状态信息（CSI）数据包由安装在计算机中的基于802.11n协议的卡收集。所收集的CSI中的划痕运动的特征是唯一的，因此其可以与无线信道幅度变化趋势区分开。
In our daily life, inadvertent scratching may increase the severity of skin diseases (such as atopic dermatitis etc.). However, people rarely pay attention to this matter, so the known measurement behaviour of the movement is also very little. Nevertheless, the behaviour and frequency of scratching represent the degree of itching, and the analysis of scratching frequency is helpful to the doctor's clinical dosage. In this Letter, a novel system is proposed to monitor the scratching motion of a sleeping human body at night. The core device of the system is just a leaky coaxial cable (LCX) and a router. Commonly, LCX is used in the blind field or semi-blindfield in wireless communication. The new idea is that the leaky cable is placed on the bed, and then the state information of physical layer of wireless communication channels is acquired to identify the scratching motion and other small body movements in the human sleep process. The results show that it can be used to detect the movement and its duration. Channel state information (CSI) packet is collected by card installed in the computer based on the 802.11n protocol. The characterisation of the scratch motion in the collected CSI is unique, so it can be distinguished from the wireless channel amplitude variation trend.