生理訊號偵測系統

專利類型

發明

專利國別 (專利申請國家)

中華民國

專利申請案號

111113326

專利證號

I 781897

專利獲證名稱

生理訊號偵測系統

專利所屬機關 (申請機關)

國立臺灣科技大學

獲證日期

2022/10/21

技術說明

A new microwave near-field self-injection-locked wrist pulse sensor that utilizes a Mohr-discriminator demodulator is proposed in this letter. The sensing oscillator with a complementary-split-ring-resonator-loaded substrate-integrated waveguide (SIW-CSRR) cavity generates a concentrated electric field in the near-field region, used for detecting the periodic wrist skin motion caused by the radial artery. According to the self-injection-locked theory, the sensing oscillator will produce a frequency-modulated signal when pulses are detected. This signal is then input into the Mohr-discriminator demodulator, acquiring the wrist pulses. Unlike differentiator-based demodulators, this demodulator resolves the non-matched issue, while also improving the frequency deviation to amplitude variation conversion efficiency. The wrist pulse rate measured with the proposed sensor agrees that acquired by a photoplethysmography sensor very well. This shows that the proposed wrist pulse sensor has a potential to be developed for healthcare applications.

備註

連絡單位 (專責單位/部門名稱)

技術移轉中心

連絡電話

02-2733-3141#7346

網址