| 摘要 |
PURPOSE:To correct the microcomputer recognition value of the sensor output and improve the precision of the processed result by calculating the ratio of the sensor power voltage monitored by a microcomputer against the proper sensor power voltage to determine the sample voltage ratio. CONSTITUTION:The ratio of the sensor power voltage SV after fluctuation against the proper sensor power voltage SV is made the sensor voltage ratio A, the ratio of the microcomputer power voltage MV against the proper microcomputer power voltage MV is made the microcomputer voltage ratio B, and the ratio of the recognition value of the voltage SV after fluctuation of a microcomputer 31 against the proper voltage SV is made the sample voltage ratio D. The recognition value of the microcomputer 31 against the voltage SV is inversely proportional to the fluctuation of the voltage MV, thus the change of the radio D is changed similarly to the recognition value of the microcomputer 31 of the sensor output based on the changes of the voltage MV and the voltage SV. The ratio B can be approximated by 1/ratio D. The ratio A can be approximated by the ratio D, when the ratio D is substituted in two equations using the ratios A, B, the recognition error of the microcomputer 31 can be approximately determined and corrected. |
