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Fan controlling system and method therefor

A fan control and fan technology, applied in pump control, non-variable-capacity pumps, machines/engines, etc., can solve problems such as reducing the heat dissipation performance of the system, and achieve the effect of overcoming heat dissipation and unstable operation.

Inactive Publication Date: 2012-10-17
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the BMC suddenly stops working while controlling the fan, the fan will run at the speed before the BMC stopped working, and its speed will no longer change with the system temperature, which may reduce the cooling performance of the system

Method used

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  • Fan controlling system and method therefor
  • Fan controlling system and method therefor

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Embodiment Construction

[0018] see figure 1 , the fan control system of the present invention is used to control a fan 20, the preferred embodiment of the fan control system includes a basic input output system (BIOS) 10, a baseboard management controller (BMC) 12, a pulse generator 14 and A signal selector 16 .

[0019] The BMC 12 has a flag in its configuration data storage area. The BMC 12 regularly sets the value of its flag bit, for example, periodically sets the value of its flag bit with a cycle of one second. If the BMC 12 works normally, the BMC 12 will set the value of its flag bit to "0" in the first cycle, and set the value of its flag bit to "1" in the second cycle, and then set the value of its flag bit to "1" in the second cycle. Set the value of its flag bit to "0" in the third cycle, set the value of its flag bit to "1" in the fourth cycle, and set it alternately so that the value of its flag bit is "0", "1" appears alternately; if the BMC 12 stops working, the value of its flag w...

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PUM

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Abstract

A fan controlling system comprises a basic input / output system (BIOS), a baseboard management controll (BMC), a pulse generator and a signal selector, wherein the BIOS identifies changes of BMC flag bits and outputs different signals to the signal selector according to the changes of the BMC flag bits, and the signal selector, according to the signals output by the BIOS, selects and outputs PWM signals output by the BMC or PWM signals output by the pulse generator to the fan. The invention also provides a method for the fan controlling system.

Description

technical field [0001] The invention relates to a fan control system and method. Background technique [0002] In the field of communication and computer, with the development of technology, the power consumption of equipment is getting higher and higher. Therefore, higher requirements are put forward for the heat dissipation performance and reliability of the heat dissipation system. At present, the main heat dissipation method in this field is mainly to use cooling fans for active air cooling. The heat dissipation fan is controlled by a pulse width modulation signal (Pulse Width Modulation, PWM) of a baseboard management controller (Baseboard Management Control, BMC). In the case of meeting the heat dissipation requirements of the system, using the PWM signal of the BMC to control the cooling fan can achieve the purpose of reducing the power consumption and noise of the system. However, if the BMC suddenly stops working while controlling the fan, the fan will run at the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D27/00
Inventor 张玉岗
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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