Quasi static pressure tolerant triboelectric textile sensor array for intelligent pulse diagnosis in traditional Chinese medicine

Traditional Chinese Medicine (TCM) pulse diagnosis provides a non-invasive approach to assess physiological conditions through multidimensional pulse information and surface thermal cues reflecting body cold–heat states. However, current sensing platforms struggle to achieve high sensitivity, and a wide linear range under the quasi-static pressure required for pulse assessment, making faithful replication of the tactile diagnostic process challenging. Here, we present a polypyrrole(PPy)/MXene ( T i 3 C 2 T x ) based triboelectric smart textile sensor (TSTS) that captures key tactile features of TCM pulse diagnosis and simultaneously detects radial artery temperature via a dual-stage signal amplification design. The TSTS forms a bioinspired multiscale conductive interface in which nanoparticles and nanosheets assemble on textiles to enhance mechanical responsiveness and thermal sensitivity, while a silicone micro-protrusion and spacer layer optimize stress transfer and structural stability. The sensor exhibits high linearity (0.999), sensitivity (0.07 V/kPa), a low detection limit (0.02 kPa), rapid response time ( < 40 ms), and high thermal resolution (0.1 ∘ C), and reliably senses pulses under quasi-static pressures of 0–100 mmHg. Integrated with a pressure graded sensing protocol and a multiscale fusion cross attention neural network (MSFCN), the system with the TSTS array enables accurate TCM pulse classification and temperature inference for intelligent health monitoring.