三軸加速度計を用いた振戦解析・評価システムの構築

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We construct the tremor analysis and evaluation system using 3-axis accelerometers for diagnosis of Parkmson's disease This system consists of 3-axis accelerometers (TEAC Instruments Co , 612-ZS), an analog-digital signal conversion card (National Instruments Co , DAQ-Card6024E), a personal computer (SHARP Co , Mebius PC-CBI-Ml) and an analysis program We created the program by the measurement software (National Instruments Co , Lab View 6j) The upper limb tremor accelerations were measured to 25 Parkmson's disease patients, 9 essential tremor patients, and 12 healthy students using this system, which we built A sampling rate is 20msec and a measurement period is 30 seconds While we were recording the tremor, the subject was sitting on the chair and putting his elbows on the desk We calculated a tremor intensity and peak frequencies on the recorded upper limb tremor of the subject The tremor intensity was calculated from X, Y and Z signals of the 3-axis accelerometers The tremor peak frequency was calculated from the strongest axis signal The calculated parameters were compared with a subject's inside information, which are Age, Tremor history and Yahr's grade The result of this investigation, we found a tendency, which the right-and-left difference of the tremor intensity decreases as the Yahr's grade becomes bad This result suggests that this system is useful to the degree evaluation of serious illness of a Parkmson's disease patient or the diagnosis of a tremor disease patient
長岡技術科学大学の論文
2002-01-15

三軸加速度計を用いた振戦解析・評価システムの構築

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