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Fan control method and device and terminal

A fan control and fan technology, applied in pump control, non-variable pumps, instruments, etc., can solve the problems of unfavorable high integration of notebook computer motherboards, and achieve the effect of ensuring reliability and improving the degree of integration

Active Publication Date: 2016-07-06
浙江长城计算机系统有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the embodiment of the present invention is to provide a kind of fan control method, aims at solving the fan control method of existing notebook, needs to connect SMBUS bus line between embedded controller and temperature sensor, is unfavorable for the highly integrated design of notebook computer motherboard question

Method used

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  • Fan control method and device and terminal
  • Fan control method and device and terminal
  • Fan control method and device and terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] refer to figure 1 , figure 1 It is an implementation flowchart of a fan control method provided by an embodiment of the present invention, and is described in detail as follows:

[0026] In step S101, it is detected whether the operating system obtains the control right;

[0027] Wherein, the embedded controller detects whether the operating system obtains the control right by receiving the ACPI_ENABLE notification of the main board.

[0028] When the embedded controller receives the ACPI_ENABLE notification from the main board, it detects that it has entered the operating system stage, indicating that the main board has handed over the control right to the operating system, and the operating system has obtained the control right.

[0029] After the detection of whether the operating system has obtained the control right, it includes:

[0030] Before the operating system obtains the control right, the fan speed is controlled to be in a medium speed state.

[0031] W...

Embodiment 2

[0040] refer to figure 2 , figure 2 It is a flow chart of the implementation of step S103 of the fan control method provided by the embodiment of the present invention, and is described in detail as follows:

[0041] In step S201, according to the temperature of the CPU, it is detected whether the speed of the fan needs to be changed;

[0042] In step S202, when the speed needs to be changed, the fan speed is switched to a state corresponding to the CPU temperature, and the state includes a non-rotating state, a low speed state, a medium speed state, and a full speed state.

[0043] Wherein, when the speed needs to be changed, the pulse modulation signal is used to change the fan speed, and the fan speed is gradually switched to a state corresponding to the CPU temperature.

[0044] For example, when the speed needs to be changed, the wind speed is changed by one-eighth each time, and lasts for 8 seconds to finally complete the switching of the fan speed.

[0045] In this...

Embodiment 3

[0047] refer to image 3 , image 3 It is the implementation flow chart of detecting whether the fan is stuck provided by the embodiment of the present invention, and the details are as follows:

[0048] In step S301, it is detected whether the fan is stuck;

[0049] In step S302, when the fan is stuck, execute the thread of forced shutdown.

[0050] A temperature threshold detection is added. If the temperature is higher than this temperature, the fan speed is in a non-rotating state, indicating that the fan is stuck, and the thread that executes the forced shutdown is forcibly shut down, and the boot is prohibited for a period of time.

[0051] In this embodiment, if the temperature is higher than this temperature but the speed of the fan still does not turn, then it is forced to shut down and prohibit the startup for a period of time, which avoids the situation that the life of the CPU and the main board is reduced when the fan is damaged, thereby improving the performanc...

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Abstract

The invention is suitable for the technical field of fan control and provides a fan control method and device and a terminal. The fan control method comprises the steps that whether an operation system acquires the control right or not is detected; the operation system sends a request of reading the CPU temperature to a main board every other preset time after acquiring the control right; in a preset storage region, the CPU temperature sent by the main board is read; and the rotating speed of a fan is controlled according to the CPU temperature. According to the fan control method and device and the terminal, an SMBUS bus does not need to be connected between an embedded controller and a temperature sensor, and the high integration problem which goes against laptop main board designing is solved; on the premise that the rotating speed of the fan is controlled, the design of the laptop main board can be highly integrated; and accordingly, the reliability that the rotating speed of the fan is controlled is ensured, and meanwhile the integration degree of the design of the laptop main board is improved.

Description

technical field [0001] The invention belongs to the technical field of fan control, and in particular relates to a fan control method, device and terminal. Background technique [0002] With the popularity of notebook computers, many notebook computers are equipped with fans for rapid cooling, and the embedded controller controls the fan to send air to the CPU to help the CPU dissipate heat, so that the CPU can run normally and process data quickly. [0003] However, the existing notebook fan control method needs to connect the SMBUS bus between the embedded controller (EmbeddedController, EC) and the temperature sensor, which is not conducive to the high integration of notebook computer motherboard design. The reason is that in the field of notebook computer motherboard design, the embedded controller controls the temperature reading of the fan CPU. Generally, the embedded controller is connected to the temperature sensor at one end through the SMBUS bus, and the SMBUS bus ...

Claims

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Application Information

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IPC IPC(8): F04D27/00G06F1/20
Inventor 张路张伟进王飞舟石明傅子奇
Owner 浙江长城计算机系统有限公司
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