Measurement of Wearable Electrode and Skin Mechanical Interaction Using Displacement and Pressure Sensors
This paper presents the methods of measuring electrode-skin mechanical interaction which is closely related to the motion artifacts of biopotential body surface electrode. The interaction was defined as inplane electrode-skin relative movement parallel with skin and their contact pressure perpendicular to skin. The wearable electrode was fabricated using sliver coated fabrics. Thin film pressure sensor and optical displacement sensor were integrated into the electrode for electrode-skin relative movement and their contact pressure measurement. The sensor-embedded electrode were placed at specific position: RA, LR and RL for electrocardiogram (ECG) recording with a default pressure of 2KPa. Electrode-skin relative movement and their contact pressure was measured during designate body movement and exercise. The results demonstrated that electrode-skin relative movement speed was in the range of 0-50mm/sec. Spectrum analysis revealed that the movement frequency laid within 0-2.5Hz which overlapped with normal ECG signal but attenuated quickly. Electrode-skin contact pressure was within the range of 0.4-1.7KPa and showed influential effect on ECG signal which can be adopted in adaptive filtering for reducing motion artifacts.
XU Pengjun TAO Xiaoming WANG Shanyuan
College of Textiles Donghua University Shanghai, China 201620 Institute of Textiles and Clothing The Hong Kong Polytechnic University Hung Horn, Kowloon, Hong Kon
国际会议
上海
英文
1137-1140
2011-10-15（万方平台首次上网日期，不代表论文的发表时间）