Zhang Clan Ancestral Hall, built in the mid-Ming Dynasty, and Darun Study Hall, a rare intact Qing Dynasty study in Hong Kong and once its only imperial exam venue, are key cultural heritage sites in Hong Kong. A proposed project adjacent to these sites may threaten them with vibration, settlement or tilt. The Hong Kong Antiquities and Monuments Office set strict standards: an alarm is triggered if tilt exceeds 1/2000 (0.028°).

The project uses FG-WM400 tilt sensors independently developed by BWSENSING as core monitoring devices. Their features include: high precision (0.001° tilt resolution, 28 times the sensitivity required by protection standards; ±2g vibration acceleration measurement with 0.2mg precision); 4G wireless transmission (all-network access, real-time data upload to cloud, with lithium thionyl chloride battery enabling over 3 years of operation with hourly data uploads); industrial-grade reliability (IP68 protection, stable operation at -40℃ to +85℃).

This solution, integrating domestic high-precision sensing technology, cloud platforms and heritage protection standards, offers an innovative model for balancing urban development and cultural heritage preservation. It marks the deep integration of high-precision sensing technology with ancient building protection, providing a replicable example. BWSENSING, leveraging its technical accumulation and collaborative innovation, has built a full-chain "perception-transmission-analysis-warning" solution, offering a "Chinese technical solution" for global cultural heritage protection.