| 摘要 |
PURPOSE:To achieve an early and highly accurate measurement responding to living bodies and environment by presuming the internal temperature of an object to be measured directly each time sampling of the temperature sensor output is done while the identification of the corresponding measuring system is presumed at each sampling. CONSTITUTION:The detection output from a temperature sensor 1 is inputted into a CPU3 through an A/D converter 2. On the other hand, the computation control of body heat to be measured is performed according to a program of an ROM4 with the CPU3. Data in the control process is memorized into an RAM5. Then, Karman filtering applied to sampling data yn from the sensor 1, the status equation an+1=A<a>Cn to which an initial value is given and the output equation as given by the formula (1) and a presumptive computation is done to obtain the presumed value (2) as given by the formula (2) of the status quantity an+1 at each sampling. The internal temperature Ei, n+1 of object being measured is calculated from the presumed values a0, a1 and b0 for identifying the measuring system obtained by presumptive computation and the constant U and the internal temperature Ei, n+1 of the object being measured thus calculated is shown on a display means 6. |
