A study of active safety driving for vehicle via human behavior, measuring the physiology and mentality.

在本研究中，我们调查了以下4项安全驾驶任务。(1)动态监测传感器信号处理方法的发展(2)应力测量(3)道路曲率与人类驾驶技能的关系。(4)利用面部表情来表达驾驶员心理状态的指标配置(1)开发了驾驶员心率测量系统。传感器采用电容式麦克风，检测驾驶员座椅上的心跳。由于传感器的高灵敏度，它不仅可以检测到心跳，还可以检测到其他噪声。为了测量心跳信号；我们提出了新的信号处理方法。在非振荡环境下，可以从垫子上检测到人的心跳变化。(2)本研究描述了如何测量压力。我们假设压力是由呼吸和心跳之间的相关性的差距引起的，并在上述假设的基础上提出了新的压力测量方法，以及已知的呼吸与心跳通过自主神经介质相关的结果。(3)本研究描述了驾驶技能的提取和评价方法。我们采用驾驶曲率作为评价驾驶技术的标准之一。提出了一种新的估计行车轨迹曲率的系统，并提出了一种新的算法来提取由于不熟练驾驶而导致的道路本身的曲率。(4)为了使驾驶员了解行驶情况，用人形标志代替通常的数字标志是很有用的。因为它比抽象的符号更直观。为了确定车辆状况与人体形状指标之间的关系，我们采用因子分析的方法得到了两者之间的关系。

In this research, we investigated following 4 tasks for the safety driving. (1) The development of signal processing method for ambulatory monitoring sensor (2) Stress measurement (3) The relation between the road curvature and human driving skill. (4) The configuration of the indicator which expresses the mentality of the driver by use of the expression of the shape of face(1) We developed the heartbeat rate measurement system for driver. A capacitor microphone was used as the sensor, and it detects heartbeat from driver seat. Because of the high sensitivity of sensor, it can detect not only the heartbeat but also the other noise. In order to measure the heartbeat signal ; we propose new signal processing method. The heartbeat rate change of the person could be detected from the cushion under non-oscillated environment.(2) This research describes how to measure stress. We assume that stress is caused by a gap in correlation between respiration and heart beat, suggest new method of measurement of stress on the basis of above assumption and known results that and respiration is correlative with heartbeat by the medium of autonomic nerve.(3) This research describes the extraction and the evaluation method of the driving skill. We employ the driving curvature, as one of criteria to evaluate the driving skill. We present a new system to estimate the curvature of driving loci and present a new algorithm to extract the curvature of a road itself that due to unskillful driving.(4) In order to inform the driving condition to driver, it is useful to indicate the human shape instead of usual numeric number. Because it is more intuitive rather than abstract symbols. In order to determine the relationship between the vehicle condition and human shape indicator, we apply the factor analysis to get that relationship.