A Textile Sensor for Long Durations of Human Motion Capture

Abstract

Human posture and movement analysis is important in the areas of rehabilitation, sports medicine, and virtual training. However, the development of sensors with good accuracy, low cost, light weight, and suitability for long durations of human motion capture is still an ongoing issue. In this paper, a new flexible textile sensor for knee joint movement measurements was developed by using ordinary fabrics and conductive yarns. An electrogoniometer was adopted as a standard reference to calibrate the proposed sensor and validate its accuracy. The knee movements of different daily activities were performed to evaluate the performance of the sensor. The results show that the proposed sensor could be used to monitor knee joint motion in everyday life with acceptable accuracy.

Real-Time Human Activity Recognition Using Textile-Based Sensors

“…Wu et al [27], used a combination of wearable flexible sensor and accelerometer to recognize activities of elderly people during the rehabilitation period. Hu et al [28] manufactured a sensor system using flexible fabrics and conductive yarns that is attachable to the knee joints. An electrogoniometer was used as a reference sensor to calibrate their system.…”

Light-driven textile sensors with potential application of UV detection

“…[10][11][12] In particular, these smart textiles can sense environmental conditions or external stimuli, such as movement, sweetness, light, pH, temperature, pressure, mechanical or magnetic effects and electricity. [13][14][15][16][17] Smart textile fabrics can even release drugs and moisture simultaneously transferred to the skin, assisting in modulating the energetic behavior during movements. 18 Smart textiles can also change color, light up in special patterns, or even display videos.…”

Wearable Active Electrode for sEMG Monitoring Using Two-Channel Brass Dry Electrodes with Reduced Electronics

“…Surface electromyography (sEMG) allows acquiring the EMG signals of the activity of the muscle fibers in a noninvasive way by placing electrodes in contact with the skin. In spite of the volume, the conductor constitutes an important low-pass filter on the EMG signal that intrinsically reduces the measured information [ 1 ]; these sEMG signals are still useful for medical diagnosis, prosthetics, rehabilitation devices [ 2 ], and sports medicine [ 3 ]. However, the amplitude of these signals, which is in the range of 50 μ V to 30 mV with a frequency bandwidth from 20 Hz to 450 Hz [ 4 ], represents an important concern for developing effective devices aimed at measuring the sEMG signal in long-term recordings without substantial noise and interferences.…”