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Method and device for controlling rotating speed of fan

A fan speed and control method technology, applied in the field of communication, can solve the problems of high noise, large redundancy of fan speed control methods, and inability to accurately respond to equipment, so as to reduce power consumption, reduce redundant design, and miniaturize noise effect

Inactive Publication Date: 2011-08-10
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a fan speed control method and device, which are used to solve the problems in the prior art that the fan speed control method has large redundancy, high noise and incapable of accurately responding to the working status of each key component in the equipment.

Method used

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  • Method and device for controlling rotating speed of fan
  • Method and device for controlling rotating speed of fan
  • Method and device for controlling rotating speed of fan

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Embodiment 1. This embodiment is aimed at the implementation method of unified control of all fans in the system. This method is generally applicable to small systems that require less fans, but it does not rule out that it can be applied to large systems that require more fans. .

[0048] Specifically, the core idea of ​​this embodiment is: each board and main control board collects the current temperature of key components through temperature detection points, and subtracts the preset alarm temperature of each key device to obtain the maximum value, and each board will obtain The maximum value of the difference is reported to the main control board. The main control board compares the difference obtained by itself with the maximum difference reported by the single board, obtains the maximum value of all differences, and reports it to the fan control board. The fan control board judges whether all boards in the system can dissipate heat safely by judging whether the re...

Embodiment 2

[0076] Embodiment 2. This embodiment is an implementation method in which the system is divided into multiple subsystems, and each subsystem can independently control the fan speed. This method is usually applicable to larger complex systems, such as systems with large internal space and low heat generation. Evenly, this method is more conducive to minimizing the fan speed and reducing noise.

[0077] Wherein, each subsystem may have one or more fans, and each subsystem is controlled by a fan control board to control the fan speed. Specifically, the control method of the fan control board is the same as the steps in the first embodiment, and will not be repeated here.

[0078] In the method provided by the embodiment of the present invention, all temperature detection points are arranged at the detection devices, and an alarm is issued according to the temperature of each key device, which most directly reflects the working status of the device and can control the fan speed mo...

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Abstract

The invention discloses a method and a device for controlling the rotating speed of a fan. The method comprises the following steps: arranging the working parameter of the fan; judging whether the difference between the current temperature of the device to be detected reported on a main control board in the system and the alarm temperature corresponds to the preset constraint conditions; if corresponding, judging whether the rotating speed of the current rotating speed of the fan after lowering by the preset adjustment quantity is less than or equal to the preset lowest rotating speed decision value of the fan, if so, adjusting the current rotating speed of the fan to be the lowest rotating speed decision value of the fan, and otherwise, adjusting the current rotating speed of the fan to be the rotating speed after lowering and returning to the step; if not corresponding, judging whether the rotating speed of the current rotating speed of the fan after rising by the preset adjustment quantity is greater than the preset maximum rotating speed, if so, reporting alarm information to the system, and otherwise, adjusting the current rotating speed of the fan to the rotating speed afterrising, and adjusting the lowest rotating speed decision value of the fan to be the current rotating speed of the fan. The method provided in the invention can not only ensure safe heat dissipation of the device, but also can minimize the noise generated by the fan of the device.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a fan speed control method and device. Background technique [0002] With the improvement of the integration of electronic equipment, the heat dissipation of the equipment has become an important topic. At present, the main heat dissipation method of electronic equipment is air cooling, and fans are mainly used. In order to reduce the noise and power consumption of the equipment, adjustable-speed fans are mostly used. The existing fan speed control method is mainly to set several temperature points and the fan speed, and then adjust the fan to a certain gear speed according to the temperature collected by the temperature sensor. Most of the temperature collection points are placed at the air outlet or air inlet. [0003] Although such a control method can make the fan work at a more suitable speed according to the temperature of the environment, the redundancy i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D27/00
Inventor 陈燕仙权志华那婷
Owner ZTE CORP