Calibration method of pressure sensor based on mc8051
A pressure sensor and calibration method technology, which is applied in the calibration/testing of force/torque/power measuring instruments, measuring fluid pressure, instruments, etc., can solve problems such as low accuracy of curve and surface fitting, unstable network, and a large number of samples
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[0026] The technical solution of the present invention will be specifically described below in conjunction with the accompanying drawings.
[0027] A kind of pressure sensor calibration algorithm based on 8051 of the present invention, comprises the following steps,
[0028] Step S1: Select the pressure sensor, preset n temperature values and m pressure values, where the n temperature values are respectively t 0 , t 1 , t 2 , t 3 , t 4 , t 5 , t 0 ~t 2 is the low normal temperature section, t 2 ~t 5 for the high temperature section;
[0029] Step S2: Fix the temperature value unchanged, carry out the pressure sensor test, and perform polynomial fitting on the pressure value P and the output voltage u to obtain the P-U function p n = f n (u);
[0030] Step S3: Test the pressure sensor in the low normal temperature section and the high temperature section respectively, and perform the following treatments respectively;
[0031] (1) Under the low normal temperatu...
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