US 12,274,244 B2
Physiological information sensing device and method
Hong-Dun Lin, Hsinchu (TW); Chih-Kang Ma, Taoyuan (TW); and Chun Jen Yin, Hsinchu County (TW)
Assigned to INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, Hsinchu (TW)
Filed by INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, Hsinchu (TW)
Filed on Dec. 28, 2022, as Appl. No. 18/089,937.
Prior Publication US 2024/0215542 A1, Jul. 4, 2024
Int. Cl. A01K 29/00 (2006.01); H04B 1/10 (2006.01)
CPC A01K 29/005 (2013.01) [H04B 1/1018 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A physiological information sensing device, comprising:
a signal generator configured to generate a microwave signal;
a transmitting antenna connected to the signal generator, and configured to transmit the microwave signal;
a first receiving antenna configured to receive a first reflected signal corresponding to the microwave signal;
a second receiving antenna configured to receive a second reflected signal corresponding to the microwave signal;
a signal processing circuit comprising:
a mixer connected to the signal generator, the first receiving antenna and the second receiving antenna, and configured to integrate the first reflected signal and the second reflected signal, and perform demodulation with the microwave signal to generate a demodulated signal;
a first band pass filter connected to the mixer, and configured to filter the demodulated signal based on a first frequency domain to generate a first filtered signal; and
a second band pass filter connected to the mixer, and configured to filter the demodulated signal based on a second frequency domain to generate a second filtered signal; and
a computing element connected to the first band pass filter and the second band pass filter, with the computing element configured to output a heart rate and a respiration rate according to the first filtered signal and the second filtered signal.