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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    
  1. aEstimated from published work.