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CPU (central processing unit) power consumption based fan control method

A fan control and power consumption technology, applied in data processing power supplies, instruments, electrical digital data processing, etc., can solve the problems of CPU overheating and slow fan speed, and achieve the effect of improving response speed and reducing system power consumption.

Inactive Publication Date: 2017-01-04
LANGCHAO ELECTRONIC INFORMATION IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] This fan control strategy has certain limitations. When the CPU power consumption increases instantaneously, a high air volume is required to dissipate the generated heat. However, due to the lag of the temperature increase, the fan speed is relatively slow, and the CPU may be short-timed. overheating situation

Method used

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  • CPU (central processing unit) power consumption based fan control method

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Embodiment 1

[0015] The fan control method based on CPU power consumption is to test the fan duty cycle required by the CPU under different operating power consumption in the research and development stage, and write the corresponding relationship between power consumption and duty cycle into the BMC; In the process, the BMC obtains the CPU power consumption value in real time, and outputs the corresponding PWM to adjust the fan speed to ensure the air volume required for CPU heat dissipation.

[0016] The specific operation steps are as follows:

[0017] In the research and development stage, use the PTU pressurization tool to make the CPU work under different loads, manually adjust the fan duty cycle, control the CPU temperature at the design requirement value, and record the fan duty cycle required for different CPU power consumption; Write the corresponding relationship between CPU power consumption and fan duty cycle into the BMC; when the server is running, the BMC obtains the CPU po...

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Abstract

The invention discloses a CPU (central processing unit) power consumption based fan control method. The method includes: at a research and development stage, testing required fan duty ratios of a CPU under different operation power consumptions, and writing a corresponding relation between the power consumptions and the fan duty ratios into a BMC (baseboard management controller); in a server operation process, allowing the BMC to acquire CPU power consumption values in real time and output corresponding PWM (pulse width modulation) to adjust the rotating speed of a fan, so that air volume required for CPU heat dissipation is guaranteed. Compared with the prior art, the CPU power consumption based fan control method has advantages that the rotating speed of the fan can be regulated according to actual heat dissipation of the CPU, response speed of the fan is increased, timeliness in dissipation of heat generated by the CPU is guaranteed, the CPU is guaranteed against overheat under all operating conditions, and system power consumption is reduced effectively.

Description

technical field [0001] The invention relates to the field of electronic heat dissipation, in particular to a fan control method based on CPU power consumption. Background technique [0002] For air-cooled and heat-dissipating servers, in order to reduce fan power consumption and noise while meeting heat dissipation requirements, the fan speed is usually adjusted based on the CPU temperature. When the CPU temperature is high, a larger air volume is required, and the fan speed is correspondingly higher; otherwise, the fan speed is lower. This fan control strategy is more intuitive and can ensure that the CPU temperature does not exceed the limit under most working conditions. [0003] This fan control strategy has certain limitations. When the CPU power consumption increases instantaneously, a high air volume is required to dissipate the generated heat. However, due to the lag of the temperature increase, the fan speed is relatively slow, and the CPU may be short-timed. over...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F1/20G06F1/32
CPCG06F1/20G06F1/325Y02D10/00
Inventor 王聪
Owner LANGCHAO ELECTRONIC INFORMATION IND CO LTD
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