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

本研究提出了利用生物脉冲波评价公路骑行质量的方法。并对公路骑行质量指标在公路资产管理中的应用进行了探讨。通过本研究可以得出以下结论。首先，在不同的道路上进行了公路行驶质量评价实验。乘坐质量定义为车辆行驶过程中驾驶员和乘客的生物脉冲波计算的李雅普诺夫指数。根据实验结果，可以提取出影响路面行驶质量的路面变化因子，如断裂或不平等。其次，分析了车辆振动引起的生物脉冲波的响应和延续，确认了车辆振动对道路行驶质量评价的影响。通过对比生物脉冲波和不均匀路段前后的振动形式，发现捕获生物脉冲波不仅可能直接影响不均匀路面，还可能持续影响路面行驶质量。因此，发现生物脉冲波作为采用人体感官评价的方式是有效的。最后，提出了各条道路骑行质量的区分方法，建立了利用生物脉冲波进行道路资产管理的评价指标。比较了生物脉冲波计算的李雅普诺夫指数在每条道路上的平均值。本研究将其定义为道路评价值。实验结果表明，各道路的道路评价值存在规律性差异。因此，可以证实利用生物脉冲波可以相对区分每条道路的骑行质量

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