Table 1. The comparison of the SWISE with existing wireless sensing and transmission methods.
| Reference |
Wireless transmission
method |
Power supply |
Flexibility of
components |
System size (m3) |
Effective transmission
distance (m) |
| (17) | Bluetooth | External powered | Soft + rigid | 2.52 × 10−6 | 10 |
| (16) | Bluetooth | External powered | Soft + rigid | 1.14 × 10−6 | 10 |
| (21) | Bluetooth | External powered | Soft + rigid | 8.82 × 10−7 | 10 |
| (9) | NFC | Wireless powered | Soft + rigid | 9.31 × 10−7 | 1.8 × 10−1 |
| (8) | NFC | Wireless powered | Soft + rigid | 5.25 × 10−8 | 2.5 × 10−1 |
| (20) | RFID | Wireless powered | Soft | 1.30 × 10−7 | 2.5 × 10−2 |
| (14) | Magnetic resonance | Self-powered (type I) | Rigid | 1.59 × 10−5 | 2 |
| (31) | Nondischarge displacement current |
Self-powered (type II) | Rigid | 4.76 × 10−4 | 1.5 × 10−1 |
| (32) | Nondischarge displacement current |
Self-powered (type II) | Rigid | 2.88 × 10−5 | 3 |
| Our work | Discharge displacement current |
Self-powered (type III) | Soft | 7.70 × 10−9 | 30 |