Method for realizing high and low pressure sensor test in low pressure environment

Abstract

The invention relates to a method for realizing a high and low pressure sensor test in a low pressure environment, belonging to a test method of a pressure sensor. The method comprises the following test steps: enabling a lower pressure air source respectively entering two triplets which are respectively connected with a valve; when a high pressure sensor test is carried out, closing a low-pressure air passage valve, opening a high-voltage air passage valve, adjusting a pressure regulator to deliver proper high-pressure air source to a tested piece through a pipeline and carrying out performance and duality tests of the pressure sensor on the high pressure sensor; and when a low pressure sensor test is carried out, closing a high-pressure loop valve, opening the low-pressure air passage valve, directly delivering the low-pressure air source to the tested piece by the pipeline through a low-pressure gas valve and carrying out performance and duality tests of the pressure sensor on the low pressure sensor. The method has the advantages that a test experiment of the high pressure sensor can be realized by only connecting the low-voltage air source into a pressuring part loop; the method is simple and feasible and substantially widens the test range; in addition, the method has small change and low cost.

Description

technical field [0001] The invention relates to a pressure sensor testing method, in particular to a method for realizing high and low pressure pressure sensor testing in a low pressure source environment. Background technique [0002] In the existing technology, no matter what kind of pressure sensor you test, you need a corresponding pressure source, but it is impossible for every test unit to have a suitable pressure source, because the pressure range of the pressure sensor tested is constantly changing. changing. [0003] At present, the traditional measurement method is to store a pressure source for testing the pressure sensor pressure on the pressure sensor test bench. When the pressure range of the detected pressure sensor exceeds the given pressure range of the air source, it cannot correct The pressure sensor of the pressure range is tested, so the traditional test method has great limitations when testing the pressure sensor. Contents of the invention [0004]...

AI Technical Summary

Problems solved by technology

[0002] In the existing technology, no matter what kind of pressure sensor you test, you need a corresponding pressure source, but it is impossible for every test unit to have a suitable pressure source, because the pressure range of the pressure sensor tested is constantly changing. changing

[0003] At present, the traditional measurement method is to reserve a pressure source for testing the pressure sensor pressure on the pressure sensor test bench. When the pressure range of the detected pressure sensor exceeds the given pressure range of the air source, it cannot be correct The pressure sensor of the pressure range is tested, so the traditional test method has great limitations when testing the pressure sensor