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本文介绍一种以FD-355SⅠ及FD-35DⅡ单片机为主的计算机测试系统,可测定三种人体行为功能,即闪烁融合频率、异音辨别及视反应时,共50种组合。作者运用这一测试系统对铅、有机锡接触工人,以及脑力紧张作业人员进行了测试,并以变异系数(C.V.)验证测试结果的稳定性。结果提示,测试系统功能稳定(C.V.多波动于10％左右),与同类单机相比,具有精确度高、体积小和便于携带的优点,可用于对接触有害因素人群的现场调查。
This article describes a FD-355S Ⅰ and FD-35D Ⅱ microcontroller-based computer test system that can measure three human behavioral functions, that is, flicker fusion frequency, heterophony discrimination and visual response, a total of 50 combinations. Using this test system, the authors tested lead, organotin exposure workers, and brain-tightening practitioners and verified the stability of the test results by the coefficient of variation (CV). The results suggest that the test system has stable functions (about 10% fluctuation of C.V.) and has the advantages of high precision, small size and portability compared with similar single machines, and can be used for on-the-spot investigation of the people exposed to harmful factors.