PROBLEM TO BE SOLVED: To evaluate characteristics of work by determining factors of stress (physical work burdens and mental burdens) of work applied to a worker during the work such as a driving work of an automobile.SOLUTION: This work characteristics evaluation apparatus 1 is provided with a masseter muscle electric potential acquisition device 10 measuring and acquiring the muscle electric potential of the masseter acting independently of the driving work by a driver, a work intensity acquisition device 20 measuring and acquiring a steering torque around a steering shaft as the work intensity in the steering, a correlation calculation module 38 calculating a correlation coefficient between time-series data of the muscle electric potential of the masseter and time-series data of the steering torque, and a determination module 39 determining whether the stress applied to the driver is caused by the physical work burdens or the mental burdens based on the correlation coefficient.COPYRIGHT: (C)2007,JPO&INPIT【課題】自動車の運転作業等の作業中に、作業が作業者に与えるストレスの要因(肉体的作業負担、精神的負担)を判定して、作業の特性を評価する。【解決手段】作業特性評価装置1は、ドライバが行う運転作業と独立して活動する咬肉の筋電位を計測し取得する咬筋電位取得装置10と、ステアリング軸周りの操舵トルクを操舵における作業強度として計測して取得する作業強度取得装置20と、咬筋の筋電位の時系列データと操舵トルクの時系列データとの間の相関係数を算出する相関算出モジュール38と、相関係数に基づいて、ドライバに与えるストレスが肉体的作業負荷によるものか、精神的負荷によるものかを判定する判定モジュール39と、を有する。【選択図】図1
