Ssu-Ying Chen

  • Citations Per Year
Learn More
This paper proposes a structure health monitoring device (HMD) with using three 1-axis accelerometers, microprocessor, analog to digital converter (ADC), and data logger for long span bridge. The proposed monitoring system achieves the features of low cost and data synchronization of three 1-axis accelerometers. Furthermore, we develop a packet acquisition(More)
This work demonstrates a real-time bridge structure health monitoring device (HMD) with using three 1-axis accelerometers, Gateway, and analog to digital converter (ADC). The proposed HMD achieves the features of low cost and data synchronization of three 1-axis accelerometers. Furthermore, we develop a packet acquisition program to receive the data from(More)
Bridges are the important pivots of traffic, the damage of bridges can cause the severe cost of human life and property. In Taiwan, many bridges have exceeded their 50-year life span. The strength of these old bridges is no longer affordable to the severe nature disasters. In other words, the bridges in Taiwan are likely to suffer from the damage. Since(More)
Our proposed scour monitoring system utilized low-cost commercial sensors, hall-effect sensors (unit price <; $1) that is capable of real-time measuring bridge pier scour with resolution of ca. 2.5 cm, and overall cost for single sensor node of our work is at least 40% less expensive than existing work. The hall-effect sensor is evaluated under(More)
An open-loop class-D audio amplifier with the proposed adaptive-coefficient delta-sigma modulator (ACDSM) and low-EMI control method is implemented in a 0.18μm BCD process. Compared with conventional DSMs, the ACDSM simultaneously achieves a wide stable input range and high in-band noise suppression, resulting in a 20% increase of low-distortion(More)
  • 1