心拍数計つきデジタル腕時計に関する研究

概要

論文の詳細を見る
We have developed a digital pulsimeter watch which picks up LEAD I ECG signal between one wrist and a forefinger of the opposite hand. As the sensitivity of ECG amplifier in the pulsimeter watch becomes higher, the undetection rate becomes smaller due to insensitivity of ECG signal and it also bescmes larger due to interference by noise. Accordingly, an optimUm sensitivity of the ECG amplifier exists where ECG undetection rate becomes minimum. For the laboratory model, ECG undetection rate was 6% when the sensitivity was at 0.25 mV. This means that the pulse rate of 94 people out of hundred can be measured satisfactorily with this model. The pulsimeter watch realized requires no high current and it works more than two years with a 3 volt lithium battery if the pulsimeter function will be used up to 10 minutes a day. Furthermore, ECG undetection rate of the actual pulsimeter is approximately 10 %.
社団法人日本時計学会の論文
1982-12-25