Physical information monitor system having means for determining reference range for abnormality determination, based on moving average of previously obtained values

A physical information monitor system, comprising:

• physical information obtaining means for successively obtaining physical information values of a living subject;
• moving average calculating means for continuously calculating a moving average of said physical information values successively obtained by said physical information obtaining means;
• reference range determining means for determining a reference range on the basis of said moving average calculated by said moving average calculating means;
• and
• abnormality determining means for determining whether one of said physical information values which is currently obtained by said physical information obtaining means is abnormal, said abnormality determining means generating an abnormality signal when the currently obtained physical information value is outside said reference range, wherein said moving average calculating means calculates a first moving average of said physical information values successively obtained during a predetermined first time period, and a second moving average of said physical information values successively obtained during a predetermined second time period which is longer than said predetermined first time period, said reference range determining means determining a first reference range on the basis of said first moving average and a second reference range on the basis of said second moving average, said abnormality determining means generating a first abnormality signal if said current physical information value obtained by said obtaining means is outside said first reference range, and a second abnormality signal different from said first abnormal signal if said current physical information value is outside said second reference range.