Introduction
Methods
Principle of measurement
Implementation of the textile motion sensor
Resistance measurement
Experiments
Experiment 1: Evaluation of CNT sensor conditions
Experimental objectives
The CNT sensor attached to wristlets
Experimental setup
Experimental results
Base textile/Attach- ment method Form factor | L-knit sewing | L-knit welding | W-knit sewing | W-knit welding |
---|---|---|---|---|
Single-layer 5 × 0.5 | 0.001 | 0.004 | 0.003 | 0.001 |
Single-layer 5 × 1 | 0.002 | 0.003 | 0.000 | 0.003 |
Single-layer 10 × 0.5 | 0.002 | 0.006 | 0.008 | 0.011 |
Single-layer 10 × 1 | 0.002 | 0.004 | 0.006 | 0.001 |
Single-layer 15 × 0.5 | 0.003 | 0.003 | 0.003 | 0.004 |
Single-layer 15 × 1 | 0.006 | 0.005 | 0.003 | 0.001 |
Double-layer 5 × 0.5 | 0.003 | 0.002 | 0.001 | 0.002 |
Double-layer 5 × 1 | 0.002 | 0.001 | 0.002 | 0.001 |
Double-layer 10 × 0.5 | 0.005 | 0.004 | 0.000 | 0.001 |
Double-layer 10 × 1 | 0.004 | 0.001 | 0.000 | 0.000 |
Double-layer 15 × 0.5 | 0.003 | 0.006 | 0.005 | 0.002 |
Double-layer 15 × 1 | 0.005 | 0.002 | 0.002 | 0.001 |
Experiment 2: CNT sensor attachment location test
Experimental objectives
Human subjects
Subject | Gender | Age (yrs) | Height (cm) | Weight (kg) | Elbow circumference (cm) | Knee circumference (cm) |
---|---|---|---|---|---|---|
1 | Male | 33 | 187 | 84 | 28 | 40 |
2 | Male | 34 | 173 | 73 | 25.5 | 36 |
3 | Male | 33 | 180 | 78 | 26.5 | 39 |
4 | Male | 35 | 178 | 61 | 26 | 36 |
5 | Male | 34 | 187 | 98 | 29.5 | 42 |
Experiment 2-a
Form factor Position Motion | 1 layer 5cm×0.5cm Joint | 1 layer 5cm×0.5cm Below | 1 layer 5cm×1cm Joint | 1 layer 5cm×1cm Below | 2 layers 5cm×0.5cm Joint | 2 layers 5cm×0.5cm Below | 2 layers 5cm×1cm Joint | 2 layers 5cm×1cm Below |
---|---|---|---|---|---|---|---|---|
Relaxed | 1.360 | 1.344 | 1.262 | 1.265 | 1.011 | 1.000 | 0.896 | 0.864 |
Flexed | 1.559 | 1.549 | 1.409 | 1.373 | 1.103 | 1.091 | 1.019 | 0.975 |
Relaxed | 1.368 | 1.349 | 1.268 | 1.268 | 1.015 | 1.002 | 0.894 | 0.864 |
Average baseline lift | 0.008 | 0.005 | 0.006 | 0.003 | 0.004 | 0.002 | −0.002 | 0.000 |
Experiment 2-B
Experimental results
Form factor Position Motion | 1 layer 5cm×0.5cm Joint | 1 layer 5cm× 0.5cm Below | 1 layer 5cm×0.5cm Upper | 1 layer 5cm× 1cm Joint | 1 layer 5cm× 1cm Below | 1 layer 5cm× 1cm Upper | 2 layers 5cm×0.5cm Joint | 2 layers 5cm× 0.5cm Below | 2 layers 5cm×0.5cm Upper | 2 layers 5cm× 1cm Joint | 2 layers 5cm× 1cm Below | 2 layers 5cm× 1cm Upper |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Relaxed | 1.774 | 1.677 | 1.763 | 1.306 | 1.343 | 1.372 | 1.305 | 1.260 | 1.300 | 0.702 | 0.676 | 0.701 |
Flexed | 2.022 | 1.985 | 2.010 | 1.597 | 1.547 | 1.568 | 1.440 | 1.414 | 1.436 | 0.778 | 0.768 | 0.779 |
Relaxed | 1.781 | 1.687 | 1.766 | 1.314 | 1.348 | 1.378 | 1.306 | 1.262 | 1.300 | 0.704 | 0.678 | 0.701 |
Averaged baseline lift | 0.007 | 0.010 | 0.003 | 0.008 | 0.005 | 0.006 | 0.001 | 0.002 | 0.000 | 0.002 | 0.002 | 0.000 |