| 摘要 |
PROBLEM TO BE SOLVED: To provide a sensing system that allows a use of a sensor composed of the small number of SAM elements to calculate a physical quantity without requiring an addition of the same number of SAM elements as that of physical quantities of a correction object.SOLUTION: A control device 14 is configured to:, upon calculating a first physical quantity, a second physical quantity slow in a time change, and a third physical quantity removable by being averaged, subtract a signal component arising from the first physical quantity by a comparative computation of an electric characteristic of a first SAW element 15 and an electric characteristic of a second SAW element 16; perform proper averaging processing with respect to a result of the comparative computation; regard the third physical quantity as a prescribed value to remove the third physical quantity; and calculate the second physical quantity.SELECTED DRAWING: Figure 4 |
