An IoT DAQ with Piezoelectric Sensor for Bridge Structure Vibration Measurement

Determination of the vibration of the structure is one of the most important operations in the health examination of a bridge. In particular, wireless IoT DAQ equipment has many advantages including tiny size, simple installation, and low inspection cost. However, such equipment system has been relatively expensive and mainly imported. The main content of this paper is to focus on the design and fabrication of a low-cost wireless DAQ device with a piezoelectric sensor of PVDF material in order to sense the vibration of the bridge structure. Additionally, the measured vibration results at the small bridge of Lam Kinh, Vietnam from the wireless DAQ are analytically compared with those obtained from the wired based-device.