Patent ID: 8838404
Filing Date: 2014-09-16
Classification: G01F,G01L

Abstract:
1. A physical quantity sensor, comprising: a physical quantity detecting element that detects a physical quantity of an object to be measured; a temperature detecting element that detects a temperature of the physical quantity detecting element; a correcting equation storing portion that stores a temperature range determining portion that determines a first temperature range or a second temperature range as a temperature range wherein the temperature detected for the temperature detecting element is included; and a correction calculating portion that uses the correcting equation corresponding to the temperature range determined by the temperature range determining portion to perform temperature correction to correct the detection signal by the physical quantity detecting element and outputs the post-correction signal as a measurement signal, wherein the first correcting equation and the second correcting equation are linear equations that minimize the maximum difference between an output value corresponding to the detection signal of the physical quantity detecting element and a value corresponding to the measurement signal after correction, in the respective temperature range pertaining to that correcting equation, and the correcting equation storing portion further stores