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Fan control system and method and CPLD

A technology of fan control and fan rotor, applied in CPLD. ,In the field of fan control system, it can solve the problem that the server system cannot obtain the fan speed signal in real time and the increase of fans.

Active Publication Date: 2018-12-18
INSPUR SUZHOU INTELLIGENT TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Corresponding fan terminal interfaces are reserved during motherboard design, but when the fan changes from single rotor to dual rotor, the PWM and TACH signal control lines of the fan increase, and when the number of preset fan terminal interfaces on the motherboard is insufficient, the server system cannot real-time Obtain fan speed signal for adjustment

Method used

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  • Fan control system and method and CPLD
  • Fan control system and method and CPLD

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Embodiment Construction

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0033] In the era of cloud computing, the power consumption of servers is increasing, and the heat flux density per unit volume of servers is getting higher and higher, which requires high heat dissipation processing capabilities of servers. Currently, each rotor of server system fans has 1 PWM and 1 TACH signal. Each has a positive and negative power supply unit. The PWM signal is the speed signal provided by the server system to the fan, and the TACH signal ...

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Abstract

The invention discloses a fan control system and method and a CPLD. The fan control system is applied to a server and comprises a plurality of fan rotors, a CPLD and a BMC, wherein TACH signals of thefan rotors are sent to the CPLD; the CPLD receives the multiple TACG signals and endows each TACH signal with corresponding identification information, and then the TACH signals with the identification information are sent to the BMC; and the BMC receives the multiple TACH signals and generates corresponding PWM control signals according to the TACH signals, and then the PWM control signals and the corresponding identification information are sent to the CPLD; and the CPLD sends the PWM control signals to the corresponding fan rotors according to the identification information. According to the fan control system and method and the CPLD, when fan rotor ports reserved on a mainboard are insufficient, multiple fan rotors controlled through the CPLD can be added to improve heat dissipation of a server system, and thus, the over-temperature risk is lowered.

Description

technical field [0001] The invention relates to the field of server hardware, in particular to a fan control system, method and CPLD. Background technique [0002] In the era of cloud computing, the power consumption of servers is increasing, and the heat flux density per unit volume of servers is getting higher and higher, which requires high heat dissipation capabilities of servers. At present, each rotor of server system fans has a PWM (Pulse Width Modulation, pulse width Modulation) and a fan speed detection signal TACH signal, each with a positive and negative power supply unit. The PWM signal is the speed signal provided by the server system to the fan, and the TACH signal is the current speed signal fed back by the fan itself to the server system. The server system adjusts the system fan speed according to the real-time feedback to achieve temperature or power consumption balance. Corresponding fan terminal interfaces are reserved during motherboard design, but when ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D27/00G06F1/20
CPCF04D27/004G06F1/20
Inventor 钱晓峰
Owner INSPUR SUZHOU INTELLIGENT TECH CO LTD
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