Table 6 Comparison with other embedded telemetry units for biomedical applications
From: An embedded multichannel telemetry unit for bone strain monitoring
Sensor type | Size | Battery | Operation time | Radio band | Rechargeable | Sampling rate | |
|---|---|---|---|---|---|---|---|
This work | Strain gage | 1.3 cm | Li-Po | 24 h | 915 MHz | Yes | 33 Hz |
(8 channels) | ×2.4 cm | 45 mAh | (wireless) | ||||
three-axis accel. | ×0.7 cm | ||||||
temperature | |||||||
[9] | Strain gage | 9.0 cm | Li-ion | 33 h | 2.4 GHz | No | 617 Hz |
(3 channels) | ×9.0 cm | ||||||
×1.8 cm | |||||||
[10] | Pressure | 2.5 cm | Li-Po | >4 days | 433 MHz | No | 1 Hz |
(resistive) | ×5 cm | 850 mAh | |||||
×0.7 cm a | |||||||
[11] | ECG | 2.6 cm | Li-Po | >12 h | 2.4 GHz | Yes | 1 kHz |
(3 channels) | ×1.5 cm | 40 mAh | (20 % duty | (wired) | |||
three-axis accel. | ×0.7 cm | cycle) | |||||
temp., light | |||||||
[12] | ECG | 5.7 cm | Li-Po | 5 h | 2.4 GHz | Yes | 1 KHz |
(3 channels) | ×3.6 cm | 120 mAh | (100 % duty | (wired) | |||
three-axis accel. | ×1.6 cm | cycle) | |||||
[13] | Pressure & | 1.3 cm | Li-Po | N. A. | 433 MHz | Yes | N. A. |
volume | ×1.3 cm | (wireless) | |||||
×1.3 cm | |||||||
[14] | Pressure | 2.7 cm | Li coin | 56 h | 433 MHz | No | 25 Hz |
×1.9 cm | 30 mAh | ||||||
×1.9 cm | |||||||
[15] | Pressure | 3.4 cm | Batteryless | Limited | 132 kHz | Externally | 10 Hz |
×1.8 cm | by external | powered | |||||
×0.7 cm | reader | ||||||
[16] | Strain gage | 4.2 cm | Batteryless | Limited | 125 kHz | Externally | 10 Hz |
× 0.4 cm | by external | powered | |||||
× 0.7 cm a | reader | ||||||
[31] | Strain gage | 3.4 cm | Batteryless | Limited | 2.4 GHz | Externally | 87 Hz |
Diameter a | by external | powered | |||||
reader |