Development of a new system measuring biological and environmental information simultaneously

暴露评价是评估工作场所空气污染物风险的必要手段。目前，在确定个人暴露于空气污染物的水平时，通过从呼吸区取样进行测量。然而，这些方法没有考虑到接触期间的体力消耗水平。众所周知，体力活动可使肺通气量增加10倍于休息时的水平。因此，肺通气量的测量以及空气污染物的空气浓度似乎可以为评估暴露提供非常有用的数据。我们于1987年在实验基础上研制了一台同时测量空气污染物暴露和肺通气量的仪器。在该系统中，使用转换公式从心率预测真实的时间肺通气量，该转换公式包括每个对象的心率变化率、年龄、身高和体重作为解释变量。在实验基础上通过仪器获得的结果，我们开发了一种改进的装置，该装置在尺寸和功能上足以用于实际使用。

Exposure evaluation is indispensable in assessing the risk of air pollutants in the workplace. Presently, when determining the level of individual exposure to air pollutants, measurements are made by taking sample from breathing zone. Those methods, however, dose not take into account the level of physical exertion during exposure. Physical activity is known to increse pulmonary ventilation by 10 times of the level at rest.Thus,measurement of pulmonary ventilation, as well as the air concentration of air pollutants, could seem to provide highlyuseful data in evaluating exposure. We have developed a instrument on experimental basis for measuring exposure to air pollutants and the pulmonary ventialtion simultaneously in1987. In this system, real time pulmonary ventilation is predicted from heart rate using a convertion formula which includes the rate of change in geart rate, age, height and weight for each subject as explanatory variables. On the findings obtained by a instrument on experimental basis we developed a improved device which is sufficient for practical use in size and function.