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Method for testing reliability of electronic product in simulation environment

A technology for electronic products and testing methods, applied in the field of electronic equipment experimental testing devices, can solve problems such as large size and single function, and achieve the effects of wide application range, small footprint and compact equipment

Pending Publication Date: 2021-11-23
GUANGXI ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The above-mentioned experimental devices have single functions, or are bulky, and cannot be a comprehensive experimental box that integrates high and low temperature tests, spray tests, and atomization tests.

Method used

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  • Method for testing reliability of electronic product in simulation environment
  • Method for testing reliability of electronic product in simulation environment
  • Method for testing reliability of electronic product in simulation environment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] To test the electronic equipment in a low-temperature environment, turn on 2 temperature-controlling fans on the top of the experimental chamber, turn on 4 circulating fans on the side of the experimental chamber, close the bottom drain pan and the movable plate, and turn on the cooling mode of the four-way reversing valve through PLC. The cooling water of the evaporator with a defrost is connected to the integrated water tank. After the cooling temperature reaches the predetermined -20°C, the compressor is turned on intermittently to keep the temperature at -20°C±1°C for 24 hours. After completion, open the door and take it out Electronic equipment completes the test.

Embodiment 2

[0049] Conduct high-temperature environment tests on electronic equipment, turn on 2 temperature-controlling fans on the top of the experimental chamber, turn on 4 circulating fans and heaters on the side of the experimental chamber, close the bottom drain pan and movable plate, and open the four-way reversing valve through PLC In heat pump mode, when the temperature reaches 85°C, the compressor is turned off, and the heater continues to heat. After the heating temperature reaches the predetermined 115°C, the heater is turned on intermittently, and the temperature is kept at 115°C±1°C for 10 hours. After completion Open the door and take out the electronic equipment to complete the test.

Embodiment 3

[0051] Carry out high-humidity environment tests on electronic equipment. Two temperature-controlling fans are turned on on the top of the experimental chamber, and the compressor is normally closed. Four circulating fans are turned on on the side of the experimental chamber. , Disc humidifier spray humidification, after the liquid level in the middle water tank is at a low level, the signal is transmitted to the PLC, the humidification storage pump is turned on to replenish water in the middle water tank, and the 100% air moisture content lasts for 48 hours. After completion, open the door and take out the electronic equipment complete test.

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Abstract

The invention provides a method for testing the reliability of an electronic product in a simulation environment. The method is characterized in that a plurality of temperature control fans are arranged at the top part of an experiment bin of an experiment device, evaporators are arranged at air outlets of the temperature control fans, and the evaporators are connected with a four-way reversing valve, a compressor, a condenser and a throttling element through circulating cold / hot medium pipes; the bottom part of the experiment cabin is provided with a drainage disc, the lower part of the drainage disc is a movable disc, the movable disc is driven to move up and down through a motor and a screw rod, the upper ends of a plurality of guide rods are fixed on the drainage disc, the guide rods penetrate through the movable disc for guiding, the movable disc is umbrella-shaped, and a water tank is arranged below the movable disc and is connected with a comprehensive water tank through a pipeline; a plurality of angle-adjustable spray heads are arranged in the middle of the side wall of the experiment bin; and the spray heads are connected with a pressurized spray pump and the comprehensive water tank through pipelines. The method can realize the extreme high and low temperature test, the extreme humidity test, the spraying test and the soaking test on the electronic device; and the method has the advantages of wide parameter control range, high temperature control precision in the test bin, uniform regional temperature and the like.

Description

technical field [0001] The invention relates to the technical field of electronic equipment experiment testing devices, in particular to an electronic device comprehensive experiment method and an experiment box device thereof. Background technique [0002] In aerospace, military industry, information engineering, material engineering and other fields, a large number of electronic devices such as electronic instruments, circuit chips, and battery components are used. Therefore, the reliability of electronic devices is the basic guarantee for the long-term stable operation of the entire equipment. In particular, aerospace and military equipment are often used in high and low temperature alternation, humidity or even water immersion; electronic instruments in material engineering are often set under high temperature environments; such harsh environments have a great impact on the housing tolerance and internal components of electronic devices. The layout and processing technol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
CPCG01R31/003
Inventor 曾军张生王俊范天来曾永斌
Owner GUANGXI ACAD OF SCI