Server fan speed adjusting method

A speed regulation method and server technology, applied in instruments, machines/engines, non-variable-capacity pumps, etc., can solve problems such as inability to reduce noise, and achieve the effect of solving chip heat dissipation and fan noise reduction.

Active Publication Date: 2015-03-04
长治浪潮云海云计算科技有限公司
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AI Technical Summary

Problems solved by technology

However, the commonly used temperature-duty ratio relationship is often a linear relationship or a segmented local linear relationship based on the temperature segment, which cannot effectively suppress the trend of accelerated temperature rise caused by a sharp increase in CPU load, nor can it be used when the CPU load drops sharply. Efficient noise reduction when the temperature decreases rapidly

Method used

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Embodiment Construction

[0059] The method of the present invention is described in detail below with reference to the accompanying drawings.

[0060] Technical scheme of the present invention comprises:

[0061] A method for adjusting the speed of a server fan, comprising the following steps:

[0062] (1) Initialize the linear or segmented local linear temperature-duty cycle mapping table based on the temperature segment, and determine one or a group of linear functional relationships based on the mapping table;

[0063] (2) Measure the chip temperature at the current moment as ;

[0064] (3) Initialize the chip temperature at the first 2 time unit moments of the current moment as , the chip temperature at the first time unit moment of the current moment is ;

[0065] (4) Determine the PWM duty cycle value that the PWM control chip needs to send to the fan at the current moment according to the following temperature-duty cycle formula and send it to the fan to adjust the duty cycle:

[0...

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Abstract

The invention provides a server fan speed adjusting method. The method includes that on the basis of a commonly-used linear or temperature-section-based sectional local linear temperature-duty ratio curve, an offset amount related to temperature increase and decrease speed is added or reduced to correct the curve, so that a nonlinear temperature-duty ratio curve that changes of PWM (pulse width modulation) duty ratio can adapt to temperature change rules better is acquired; speed of a server fan is adjusted according to a relationship, between chip temperature and the PWM duty ratio, determined by the nonlinear temperature-duty ration curve. The server fan speed adjusting method is conducive to better solving the problems of chip cooling and fan denoising.

Description

technical field [0001] The invention relates to the technical field of heat dissipation of a server chassis, in particular to a method for adjusting the speed of a fan of a server. Background technique [0002] The server is a computing-intensive device. The internal CPU and various chips will generate a lot of heat. If the heat generated during the operation of the machine is not discharged in time, the temperature of the chip and the chassis will rise, which will seriously affect the performance of the server. Stability and reliability, and even system downtime. [0003] Since the application of the four-pin PWM intelligent temperature-controlled fan, it has solved the cooling problem of the chassis well. The motherboard with PWM intelligent temperature control fan has a temperature measurement circuit and a PWM control chip. The PWM control chip generates PWM pulse signals with different duty ratios according to the temperature of the CPU and other chips or the chassis o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F1/20
CPCF04D27/0261
Inventor 李清石张雁鹏刘强金长新
Owner 长治浪潮云海云计算科技有限公司
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