Development of a fatigue assessment.

研制了一种便携式疲劳评估装置。该装置由数据采集（测量）单元、数据处理单元和结果表达单元组成。测量项目为临界闪烁频率（CFF）[Hz]、收缩压和舒张压（SBP、DBP）[mmHg]、选择性反应数（Sel No）[次/10 s]和敲击运动数（Mot No）[次/10 s]。在数据处理单元中包括以下多元回归模型，以根据工作后的数据与工作前的数据对比来估计疲劳水平（F-score）：F-score=-1.95x（CFF）-0.12x（SBP）+0.06x（DBP）-2.93x（Sel No）-0.13x（Mot No）+164。根据F-评分将疲劳分为4个级别，如0-9 ;无疲劳，10-19 ;轻度疲劳，20-49 ;相当疲劳，超过50 ;极度疲劳。毫无疑问，这种便携式疲劳评估装置将用于在各种工作场所简单和容易地评估工作疲劳。

A portable fatigue assessment apparatus was developed. The apparatus consists of a data acquisition (measurement) unit, a data processing unit and a result expression unit. Measurement items are critical flicker frequency (CFF) [Hz], systolic and diastolic blood pressures (SBP,DBP) [mmHg], selective reaction number (Sel No) [times/10s], and tapping motion number (Mot No) [times/10s]. The following multiple regression model was included in the data processing unit to estimate the fatigue level (F-score) from the data after work by contrast with the data before work.F-score=-1.95x(CFF)-0.12x(SBP)+0.06x(DBP)-2.93x(Sel No)-0.13x(Mot No)+164The estimated F-score was immediately displayd on the a liquid crystal screen of a note-type computer. The fatigue based on the F-score was divided into four levels such as 0-9 ; no fatigue, 10-19 ; slight fatigue, 20-49 ; rather fatigue, more than 50 ; extreme fatigue. There is little doubt that this portable fatigue assessment apparatus will be useful for the simple and easy assessment of work fatigue in various work places.