| Summary: | 碩士 === 國立臺灣大學 === 土木工程學研究所 === 107 === The smoothness of road pavements is a key factor affecting the safety and comfort of general road users. As a consequence, an efficient monitoring and maintenance method ensuring the smoothness of road pavements become an important task. Meanwhile, the most commonly used smoothness measurement methods are primarily based on the geometric variations of road pavements. Such methods not only can’t directly reflect the riding comfort of road users, but also are time-consuming and expensive. In this study, a method for collecting road pavement smoothness data using the built-in sensors in a smartphone, including accelerometer, gyroscopes and GNSS sensors, is proposed. After applying the proposed three-axis attitude correction, vehicle speed correction, and box filtering techniques, the road smoothness and riding comfort can thus be evaluated based the criteria described in ISO2631-1. Consequently, an efficient and economic method for evaluating the actual riding comfort of road users becomes available based the techniques developed in this study.
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