Micro pump accelerated life testing method

Abstract

The invention belongs to the field of micro pumps and specifically discloses a micro pump accelerated life testing method. The method comprises the steps of grouping micro pumps, and selecting the voltage and the temperature of a working medium as accelerated stress to conduct continuous testing to obtain the pseudo-failure lifetime; conducting calculation to obtain the characteristic life of eachgroup of micro pumps and the activation energy and the index constant of the type of micro pumps; and selecting a solution reference group and obtaining the characteristic life of the type of micro pumps under the normal use conditions through the characteristic life of the solution reference group combined with the activation energy and the index constant. According to the micro pump acceleratedlife testing method, according to the characteristics that the failure of the micro pumps can be accelerated by voltage rising and temperature rising of the working medium of the micro pumps and thefailure mode of the micro pumps is fixed and single, the accelerated life of the micro pumps is tested with the voltage and the temperature of the working medium as the accelerated stress. The micro pump accelerated life testing method has the characteristics of high operability and easy testing regulation and control. Meanwhile, the test cycle can be shortened, and the test cost can be reduced.

Description

technical field [0001] The invention belongs to the field of micropumps, and more specifically relates to a method for testing the accelerated life of a micropump. Background technique [0002] A pump is a machine that moves or pressurizes a fluid. Generally, pumps whose size reaches the order of mm and below are called micropumps. As the "heart" of the microfluidic system, the micropump is the power source of microfluidic transportation, and can be widely used in drug delivery, blood transportation, DNA synthesis, electronic cooling system, micro-total analysis system, power battery, satellite propulsion system and other fields , the market demand is large, and the prospect is very broad. As a product, micropumps have attracted much attention from consumers for their service life. When the flow rate and head meet the requirements of consumers, the micropump with longer service life will be favored by consumers. For a micropump, the most effective and reliable way to kno...

AI Technical Summary

Problems solved by technology

[0004] However, the current accelerated life test method for micropumps has been blank. The existing accelerated life test methods for other components are not suitable for micropumps with high speed and fixed single failure mode, and cannot be directly used in micropumps.

Without the accelerated life test method, the accelerated life test of the micropump cannot be carried out. The only way to obtain its life information is to pass the conventional life test, which will bring huge time and economic costs, which is not conducive to the development of the micropump industry.

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