Prof. Ting-Wei Wang -- Lightweight Flexible Electromagnetic Patch for Non-contact Health Monitoring

Category: *Precision Health & Smart Medical

Exhibitor: NATIONAL TSING HUA UNIVERSITY

Booth No: N315A

Characteristic

**Characteristic**
We present a non-contact electromagnetic induction-based patch sensor that integrates a passive LC circuit, inductance-to-digital converter (ASIC), and wireless module into a compact 9 × 5 cm, 6 g device. Using biomedical eddy current sensing, the sensor forms magnetic coupling with body-induced eddy currents to detect resonance frequency shifts, enabling pulse monitoring from the heart, lungs, carotid, radial, and femoral arteries. Experiments show accurate heart rate and respiration measurements through fabric layers up to 5.35 mm thick, with mean absolute errors within ±5 bpm and ±3 rpm. The sensor also successfully captured real-time physiological changes during cold pressor tests and varied breathing patterns, demonstrating its comfort, accuracy, and practicality for wearable health monitoring.

**R & D team/Company Profile**
Professor Ting-Wei Wang, the director of the National Tsing Hua University Medical Electronics Laboratory, and his team use electrical engineering technology to develop innovative biomedical devices, including wearable medical electronics, implantable devices, contactless signal sensing, passive component development, artificial intelligence Internet of Things, edge computing, and electronic circuit design. The laboratory has successfully developed devices such as contactless ECG sensors, piezoelectric sensors, and transcranial magnetic field stimulation. The research topic focuses on non-invasive deep physiological signal sensing and battery-free implantable sensor development, and uses electromagnetic theory and wireless transmission technology to develop innovative biomedical electronic devices.

**Contact window**
Ting-Wei Wang
+886 3-5715131#35498
wangtw@mx.nthu.edu.tw