Investigation of an Ultra Wideband Noise Sensor for Health Monitoring

Figures

• 

  Figure 1. Signal recording in relation to the breathing and heartbeat rhythm.

• 

  Figure 2. The block diagram of the developed sensor in Figure (a) and the measurement setup for vital sign monitoring in Figure (b).

• 

  Figure 3. The sounding signal measured by (a) a 70 GHz sampling oscilloscope and (b) the receiver of the developed sensor, and (c) the corresponding frequency spectrums.

• 

  Figure 4. Measurement scenarios for (a) the robot movement detection and (b) the detection of human vital signs.

• 

  Figure 5. One waveform collected by the receiver and the signal after the clutter removal.

• 

  Figure 6. Detection results of the robot movement. The top figure shows a slow time signal and the bottom figure is its frequency spectrum.

• 

  Figure 7. Respiratory frequency spectrum for the test no. 10.

• 

  Figure 8. Respiration spectrum (top) and heartbeat spectrum (bottom) for test example 1.

• 

  Figure 9. Respiration spectrum (top) and heartbeat spectrum (bottom) for test example 2.

• 

  Figure 10. Respiration spectrum (top) and heartbeat spectrum (bottom) for test example 3.