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Computer stability test system and method

A technology of stability test and test system, which is applied in the detection of faulty computer hardware, function test, etc. It can solve the problems of low test efficiency, different ripple coefficients, and inability to fully cover, etc., and achieve the effect of improving test efficiency

Inactive Publication Date: 2005-06-22
LENOVO (BEIJING) CO LTD
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Problems solved by technology

Although the ripple range of each power supply is clearly stipulated in the ATX power supply specification, for example, the ripple of +3.3V and +5V should be less than 50mV, but because different power supplies will have different ripple coefficients
To test the computer's ability to adapt to power supply ripple, it is impossible for us to test all the power supplies, which is inefficient and unable to fully cover

Method used

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  • Computer stability test system and method
  • Computer stability test system and method
  • Computer stability test system and method

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Embodiment Construction

[0018] Ripple refers to all unnecessary AC and noise components on the regulated and filtered DC output voltage (including low-frequency 50 / 60Hz power frequency multiplication signals, high-frequency switching signals higher than 20KHz and their harmonics, It is composed of other random signals), usually expressed in units of mVp-p peak-to-peak voltage, and sometimes expressed in ripple coefficient, that is, the ratio of ripple voltage amplitude to DC voltage amplitude, commonly used logarithmic method express.

[0019] Of course, for different loads, the ripple coefficient shown by the power supply is not the same. The ATX12V specification stipulates that when a standard load is connected (usually a 0.1UF ceramic capacitor and a 10uF electrolytic capacitor are connected in parallel as an analog load), measure with an oscilloscope with a bandwidth of 20MHZ. The measurement standard of the ripple in the specific embodiment of the present invention is carried out in this way, a...

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Abstract

A computer stability test system includes a parameter set module for designing output voltage and ripple information, a signal control module generating power supply input control signals based on the independent power supply corresponding to the voltage and ripple information, a programmable supply including several sets of independent power supplies, each outputs pre-designed output voltage and ripple voltages with the same ripple information based on related power supply input control signal, a monitor module obtaining monitor information containing output voltage information providing to the being tested object and its operation state information, a result process module generating test results, cutting off the test system when the output voltage is abnormal and judging stability of the tested object based on the state information. The test method includes a parameter design, signal control, monitor and process.

Description

technical field [0001] The invention relates to computer stability testing, in particular to a computer stability testing system and method based on power ripple. Background technique [0002] At present, stability will become the development trend of commercial personal computers (Personal Computer, PC). More and more rational users begin to jump out of the circle of blindly pursuing simple technical indicators such as speed and capacity, and turn their attention to the stable operation of commercial computers. superior. According to the consumer choice survey released by CCW Research, an authoritative research institution in China, in March 2003, among the factors that consumers of PC products care about most, stability accounts for 15.1%, which is much higher than the price, appearance and style. The emphasis on factors such as speed has even begun to be higher than speed, which is the biggest concern of traditional users for PCs. Ripple is one of the main causes of har...

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Application Information

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IPC IPC(8): G06F11/26
Inventor 樊小军龚仲涛卢旭
Owner LENOVO (BEIJING) CO LTD