| 摘要 |
PROBLEM TO BE SOLVED: To shorten a time from the start of A/D conversion of a sensor signal to the output of A/D conversion data with temperature characteristics of a physical quantity sensor canceled.SOLUTION: A sensor signal processing device includes a first A/D converter 7 having a variable offset and conversion gain and configured to A/D-convert a sensor signal of a physical quantity sensor 2, and a second A/D converter 8 configured to A/D-convert a temperature signal of a temperature sensor 3 for sensing a temperature of the physical quantity sensor 2. A temperature measurement process of instructing the A/D converter 8 to execute A/D conversion of the temperature signal, an arithmetic process of computing such an offset and conversion gain of the A/D converter 7 so as to cancel temperature characteristics of the physical quantity sensor 2 in the process of the A/D converter 7 A/D-converting the sensor signal, on the basis of an A/D conversion value of the A/D converter 8 and temperature characteristic data on the physical quantity sensor 2, and a signal conversion process of setting the computed offset and conversion gain in the A/D converter 7 to instruct the A/D converter 7 to execute A/D conversion of the sensor signal are executed concurrently. |
