A device for eliminating acceleration effect and temperature effect of pressure sensor

Abstract

The present invention is a device for eliminating the acceleration effect and temperature effect of a pressure sensor. Two completely identical pressure sensors A and B are arranged side by side in the casing of the device. The sensitive surface of pressure sensor B is connected to the blind hole in the shell, and is not connected to the outside world. The sensitive surface of pressure sensor A is connected to the pressure transmission hole, and is connected to the outside world. Both the pressure transmission hole and the blind hole are coated with pressure transmission silicone grease. Pressure sensor A is subjected to pressure, vibration shock and temperature to generate signals; pressure sensor B is subjected to vibration shock and temperature to generate signals; the installation torque of the two sensors is the same, the sampling frequency is the same, and the starting point of sampling time is the same, so the collected two signals can be compared A pure pressure signal is obtained, which eliminates measurement errors caused by acceleration effects. The method can eliminate the acceleration effect and temperature effect that affect the measurement result of the pressure sensor, and obtain an accurate and ideal pressure curve to be measured. The device is simple in design, reasonable in method and accurate in result, and is worthy of adoption and popularization.

Description

technical field [0001] The invention relates to the technical field of pressure testing, in particular to a device for eliminating the acceleration effect and temperature effect of a pressure sensor. Background technique [0002] With the rapid development of aerospace technology, weapon industry, and robot industry, the demand for sensors in modern industry is huge. In today's testing world, stress testing is widespread. When testing pressure under harsh conditions of high impact, high temperature, and high electromagnetic interference, the piezoelectric effect or pressure of the pressure sensor will be affected due to the quality properties of the pressure sensor material itself (generating acceleration effects) and thermal expansion properties (generating temperature effects). resistance effect. Therefore, when considering the accuracy of pressure measurement, it is necessary to consider eliminating the influence of the acceleration effect and temperature effect of the ...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that the acceleration effect and temperature effect of the pressure sensor affect the measurement results and solve the problem that the existing correction method cannot make the measurement result curve achieve real-time and accurate measurement, a device for eliminating the acceleration effect and temperature effect of the pressure sensor is proposed.

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