| 摘要 |
According to the present invention, two temperature meters are mounted externally on a pipe within which fluid flows. The temperature meters deliver electrical signals to a computer or corresponding device. The mutual spacing between the temperature meters is known. The temperature signals are sampled a number of times, m, and a transfer function is calculated, this function having n terms, where m>n, so that the least square method can be applied. Preferably, it is assumed that the elements of the transfer function have small second difference significance, that the first and the last elements have low values, and that all elements are positive. |
