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A detection system, method and device for a fan link failure

A technology for link failure and detection system, applied in non-variable-capacity pumps, instruments, pump control and other directions, it can solve the problems that fans cannot be effectively controlled, BMC cannot indicate the fault location, etc., and achieves reliable design principles and outstanding substantive features. , the effect of wide application prospects

Active Publication Date: 2020-10-09
INSPUR SUZHOU INTELLIGENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the defect that the fan control process of the above-mentioned BMC of the prior art hangs, but when the BMC system as a whole is still working, the fan cannot be effectively controlled, and when the control signal of a certain fan fails, the BMC cannot indicate the specific fault location. Provide a fan link fault detection system, method and device to solve the above technical problems

Method used

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  • A detection system, method and device for a fan link failure
  • A detection system, method and device for a fan link failure
  • A detection system, method and device for a fan link failure

Examples

Experimental program
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Embodiment 1

[0077] Such as figure 1 As shown, the present invention provides a fan link fault detection system, including CPLD 1, CPLD1 is connected with BMC 2 and several fans 3;

[0078] BMC 2 and CPLD 1 are respectively connected through the I2C link and the fan BMC_PWM control link;

[0079] CPLD 1 is connected to each fan 3 through the fan CPLD_PWM control link;

[0080] BMC 2 is connected to each fan 3 through a fan speed detection link;

[0081] BMC 2 and CPLD 1 are also connected through the WDT monitoring link;

[0082] Set the fan BMC_PWM control link as A link, set the fan CPLD_PWM control link-fan-fan speed detection link as B link;

[0083] BMC 2 obtains the actual speed information of each fan through the corresponding fan speed detection link;

[0084] While CPLD 1 acquires and forwards the PWM duty cycle control information of each fan from BMC 2 through the A link, it also obtains the PWM duty cycle control information of each fan and the actual speed information;

...

Embodiment 2

[0089] Such as figure 2 As shown, the present invention provides a fan link fault detection method based on the above-mentioned embodiment 1, including the following steps:

[0090] S1. The BMC obtains the actual speed information of each fan through the corresponding fan speed detection link;

[0091] S2.CPLD obtains and forwards the PWM duty cycle control information of each fan from the BMC through the A link, and also obtains the PWM duty cycle control information of each fan and the actual speed of each fan from the BMC through the I2C link information;

[0092] S3.CPLD determines whether there is a link A failure by comparing the PWM duty cycle control information of each fan obtained from the A link with the PWM duty cycle control information of each fan obtained from the I2C link;

[0093] S4. The CPLD compares the actual rotational speed information of each fan with the PWM duty cycle control information of each fan output by the CPLD itself to determine whether th...

Embodiment 3

[0095] Such as image 3 As shown, the present invention provides a fan link fault detection method based on the above-mentioned embodiment 1, including the following steps:

[0096] S1. The BMC obtains the actual speed information of each fan through the corresponding fan speed detection link;

[0097] S2.CPLD obtains and forwards the PWM duty cycle control information of each fan from the BMC through the A link, and also obtains the PWM duty cycle control information of each fan and the actual speed of each fan from the BMC through the I2C link information;

[0098] S3. The CPLD judges whether there is a link A fault by comparing the PWM duty cycle control information of each fan obtained from the A link with the PWM duty cycle control information of each fan obtained from the I2C link; specifically Proceed as follows:

[0099] S31.CPLD compares whether the PWM duty cycle control information of each fan obtained from the A link is the same as the PWM duty cycle control inf...

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Abstract

The invention provides a detection system, method and device of fan link failures. The method comprises the steps that S1, a BMC acquires actual rotating speed information of each fan through a corresponding fan rotating speed detection link; S2, a CPLD acquires and transmits PWM duty ratio control information of each fan from the BMC through an A link, and meanwhile acquires PWM duty ratio control information of each fan and the actual rotating speed information of each fan from the BMC through an I2C link; S3, whether the A link failure exists or not is judged by the CPLD through compare ofthe PWM duty ratio control information, acquired from the A link, of each fan with the PWM duty ratio control information, acquired from the I2C link, of each fan; and S4, whether a B link failure exists or not is judged by the CPLD by comparing the actual rotating speed information of each fan with PWM duty ratio control information, output by the CPLD, of each fan.

Description

technical field [0001] The invention belongs to the technical field of server fan fault detection, and in particular relates to a fan link fault detection system, method and device. Background technique [0002] CPLD: Complex Programmable Logic Device, complex programmable logic device. [0003] PWM: Pulse Width Modulation, pulse width modulation. [0004] Currently in the server field, fans are mainly used inside the chassis for heat dissipation. In order to meet the heat dissipation requirements, a server chassis is usually equipped with multiple fans, which are controlled by the BMC. According to a predetermined heat dissipation strategy, the speeds of different fans are different. In order to prevent the heat dissipation of the system from being out of control after the BMC is suspended, the watchdog signal and the fan control signal of the BMC are usually connected to the CPLD. After the CPLD detects that the BMC is suspended, it will take over the control of the fan....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D27/00G06F1/20
CPCF04D27/001G06F1/20
Inventor 葛志华王海波
Owner INSPUR SUZHOU INTELLIGENT TECH CO LTD