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

本研究提出了一种利用生物脉搏波评价道路行驶品质的方法。并对公路资产管理如何使用公路行驶质量指标进行了探讨。通过本研究可以得出以下结论：首先，对不同道路进行了道路行驶品质评价实验。平顺性定义为车辆行驶过程中驾驶员和乘客的生物脉搏波计算出的Lyapunov指数。其次，分析了车辆振动对生物脉搏波的响应和延续情况，以确定车辆振动对道路行驶品质的影响。通过比较不平度段前后的生物脉搏波和振动波形，发现生物脉搏波有可能被连续捕捉到，不仅对不平度有直接影响，而且对路面平顺性也有影响。最后，提出了利用生物脉搏波进行道路资产管理评价的方法，建立了基于生物脉搏波的道路资产管理评价指标体系。比较每条道路的生物脉搏波计算的Lyapunov指数的平均值。这在本研究中被定义为道路评价值。试验结果表明，每条道路的道路评价值存在规律性差异。因此，利用生物脉搏波可以相对较好地区分每条道路的行驶质量

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