Establishment of the new road maintenance control index by the biological pulse wave sensing and its application for road asset management

本研究提出以生物脉搏波来评估道路行驶品质的方法。并探讨了如何将道路行驶质量指标应用于道路资产管理。通过本研究可以得到以下结论：首先，在各种道路上进行了评价道路行驶质量的实验。利用驾驶员和乘客在车辆行驶过程中的生物脉搏波计算出的李雅普诺夫指数来描述车辆的平稳性。通过试验，提取出影响道路行驶质量的路面变化因素，如断层、不平度等，并分析了车辆振动对生物脉搏波的响应和延续性，确定了车辆振动对道路行驶质量评价的影响。通过比较生物脉搏波和不平坦路段前后的振动形式，发现生物脉搏波不仅可能被捕获到不平坦的直接影响，而且可能被捕获到连续的道路行驶质量。最后，提出了利用生物脉搏波建立道路资产管理评价指标的道路行驶质量判别方法。比较了每条道路上由生物脉搏波计算的李雅普诺夫指数的平均值。在本研究中，这被定义为道路评价值。作为实验的结果，在每条道路的道路评价值中看到有规律的差异。因此，可以确定，利用生物脉搏波可以区分不同道路的行驶质量

In this study, the methodology to evaluate a road riding quality was proposed by using biological pulse wave. And how to use a road riding quality index was examined for road asset management. The following conclusions may be made through this study.First of all, an experiment to evaluate a road riding quality was enforced to the various roads. The riding quality defined as Lyapunov exponent calculated from biological pulse wave of driver and passenger during vehicles running. The variety factor of the road, which influences the road riding quality such as faulting or unevenness, could be extracted as the result of experiment.Secondary, the response and continuation of the biological pulse wave due to vehicles vibration were analyzed to confirm the influence of vehicles vibration in road riding quality evaluation. as the result of comparing both the biological pulse wave and the vibration form before and behind the unevenness section, it found that it was possible that the biological pulse wave was caught to not only the direct influence of unevenness but also the road riding quality continuously. Therefore, it found that the biological pulse wave was effective as the way of adopting human sensuous evaluation.Finally, the distinction method of the riding quality of every road was proposed in order to establish the evaluation index of road asset management by using biological pulse wave. The average of Lyapunov exponent calculated from the biological pulse wave was compared in each every road. This was defined as the road evaluation value in this study. The regular difference was seen in the road evaluation value of each road as the result of the experiment. Therefore, it could confirm that the riding quality of every road could be distinguished by using biological pulse wave relatively