Rotation speed control system and method of CPU (Central Processing Unit) fan

A fan speed and control system technology, applied in the direction of pump control, non-variable pumps, instruments, etc., can solve the problems of not reaching the cooling effect of the system, increasing the noise of the fan, and not effectively improving the cooling effect, so as to achieve a balance Effect of system heat dissipation and fan noise

Active Publication Date: 2011-08-31
XUZHOU FENGTONG INFORMATION TECH CO LTD
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

However, often because the fan speed is increased, the heat dissipation effect has not been effectively improved.
For example, when the fan speed is 100%, it produces excessive noise, which exceeds the established noise specification
Although increasing the speed of the fan can improve the CPU temperature, wh

Method used

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  • Rotation speed control system and method of CPU (Central Processing Unit) fan
  • Rotation speed control system and method of CPU (Central Processing Unit) fan
  • Rotation speed control system and method of CPU (Central Processing Unit) fan

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Embodiment Construction

[0013] like figure 1 As shown, it is a schematic diagram of the structure of a preferred embodiment of the CPU fan speed control system 32 of the present invention. In this embodiment, the CPU (Central Processing Unit, central processing unit) fan speed control system 32 runs in the electronic device 3 . The electronic device 3 may be a desktop computer (PC), a notebook computer (Notebook), a server (Server) and other electronic computing devices. The electronic device 3 includes a CPU fan 1 , a CPU 2 and a temperature sensor (Thermal Sensor) 31 . The CPU fan 1 is generally installed on the CPU 2, and it provides system cooling for the CPU 2 when it is working. The CPU fan speed control system 32 is connected to the CPU fan 1 and the CPU 2 respectively through a temperature sensor 31 . The temperature sensor 31 is used for sensing the ambient temperature of the system and the operating temperature of the CPU 2 . In this embodiment, the temperature sensor 31 is installed in...

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Abstract

The invention provides a rotation speed control system and method of a CPU (Central Processing Unit) fan. The method comprises the steps of: obtaining a system environment temperature by using a temperature sensor, adjusting a fan rotation speed to be a first rotation speed and obtaining a first working temperature of the CPU at the first rotation speed; figuring out a first optimization temperature of the CPU at the first rotation speed; adjusting the fan rotation speed to be a second rotation speed and obtaining a second working temperature of the CPU at the second rotation speed; figuring out a second optimization temperature of the CPU at the second rotation speed; figuring out a temperature difference value according to the first optimization temperature and the second optimization temperature; judging whether the temperature difference value is less than a preset temperature parameter or not; and controlling the rotation speed of the CPU fan within an optimal rotation speed range while the temperature difference value is less than the temperature parameter. By implementing the invention, a heat radiation effect and fan noise of an electronic device system can be balanced to optimize the heat radiation effect of the system and reduce the fan noise.

Description

technical field [0001] The invention relates to a heat dissipation system and method for an electronic device, in particular to a CPU fan speed control system and method. Background technique [0002] In a general computer (such as PC / Server) system, it is often necessary to adjust the fan speed (Duty cycle) to improve the heat dissipation effect due to the change of the ambient temperature. However, often because the fan speed is increased, its heat dissipation effect has not been effectively improved. For example, when the fan speed is 100%, excessive noise is generated instead, thereby exceeding the established noise specification. Although increasing the speed of the fan can improve the CPU temperature, when the duty cycle > 80%, the degree of improvement of the CPU temperature is not linearly related to the speed of the fan, which is not obvious when the speed is 20% to 80%, that is, although the fan The speed is increased, but the cooling effect of the system cann...

Claims

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Application Information

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IPC IPC(8): F04D27/00G06F1/20
Inventor 谭子佳
Owner XUZHOU FENGTONG INFORMATION TECH CO LTD
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