Positive pressure release and re-pressure test system and test method for electronic stand-alone products

Abstract

The invention provides a positive pressure depressurization and repressurization test method and system of an electronic single machine product. The system herein includes a container sub-system, a positive pressure test sub-system, and a measurement and control sub-system. The positive pressure test sub-system is composed of a safety valve, a high-precision pressure sensor, a quality flow controller, a gas pipeline and a hand valve. The measurement and control sub-system can real-timely display and save vacuum degree and pressure data, transmits the operating state parameter of a device and controls the flow of the quality flow controller. According to the invention, the system can detect whether an electronic device or hermetic device can tolerate positive pressure at room temperature orlow temperature and the fast changing process or the pressure of the electronic device or the hermetic device, and the environmental suitability of the electronic device or the hermetic device in theprocess of depressurization and repressurization. The system herein can realize accurate control of the velocity of the depressurization and repressurization and addresses the difficulty of hermeticpressure maintaining of positive pressure test containers.

Description

Technical field [0001] The invention belongs to the technical field of spacecraft ground environment test, and specifically relates to a system and test method corresponding to the positive pressure relief and recompression test of a spacecraft electronic stand-alone product. The simulation of the required pressure and the relief recompression rate is realized in the ground environment , Solve the problems of precise control of the corresponding rate of re-pressure release and the sealing and holding pressure of positive pressure test container. Background technique [0002] With the diversified development of my country’s aerospace missions, spacecraft are equipped with more and more electronic components and stand-alone equipment due to the expansion of their platform functions and technical requirements. The development of electronic technology in aerospace platforms has made the inherent complexity Electronic products increase the difficulty of their development. Especially i...

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Problems solved by technology

[0004] The national invention patent "A device for testing the low-temperature and low-pressure starting and running characteristics of the engine" (CN201210580873.5) discloses a device for testing the low-temperature and low-pressure starting and running characteristics of the engine and a testing method using the device , but this patent can only be used to solve the test in the low temperature and low pressure environment, but it does not involve the pressure relief process under positive pressure environment conditions, nor can it meet the use requirements of pressure relief under positive pressure environment conditions

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