Fan control based on a time-variable rate of current
US-2018352677-A1 · Dec 6, 2018 · US
Fan speed-adjustment policy for entire machine cabinet by placing fan table on node BMC
US10405455B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10405455-B2 |
| Application number | US-201615745093-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 10, 2016 |
| Priority date | Oct 14, 2015 |
| Publication date | Sep 3, 2019 |
| Grant date | Sep 3, 2019 |
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- Title
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Abstract
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A rack fan speed regulation method based on a fan table provided in a node BMC is provided, which includes: providing a fan table reflecting a rack fan speed regulation policy in a BMC of each node server; acquiring, by the node BMC, a parameter reflecting a heat dissipation condition of a node motherboard; and acquiring, by the node BMC based on the speed regulation policy, a fan rotation speed corresponding to the parameter rapidly. With the rack fan speed regulation method, the node BMC can rapidly obtain parameters reflecting a heat dissipation condition of a node motherboard, and rapidly obtain a corresponding fan rotation speed based on the speed regulation policy. In this case, heat dissipation of the node can be controlled effectively in a timely manner, thereby ensuring heat dissipation of the rack.
First claim
Opening claim text (preview).
The invention claimed is: 1. A rack fan speed regulation method based on a fan regulation policy table provided in a node BMC, comprising: providing a fan regulation policy table reflecting a rack fan speed regulation policy in a BMC of each node server, wherein the fan regulation policy table is obtained based on a heat dissipation test and comprises different CPU temperatures and different ambient temperatures; acquiring, by the node BMC, a parameter reflecting a heat dissipation condition of a node motherboard, wherein the parameter comprises a CPU temperature and an intake vent temperature of the node server; acquiring, by the node BMC based on the speed regulation policy, a fan duty value of a node corresponding to the node BMC based on the CPU temperature and the intake vent temperature of the node server; sending, by the node BMC, the fan duty value to a node mid-plane; selecting, by the node mid-plane, a maximum fan duty value from fan duty values of four nodes connected to the node mid-plane and located on a same layer as the node mid-plane, to obtain a fan duty value of the node mid-plane of the layer; acquiring, by an RMC, the fan duty value of the node mid-plane of each layer from the node mid-plane; and acquiring, by the RMC, a maximum fan duty value of node mid-planes in an upper half rack and a maximum fan duty value of node mid-planes in a lower half rack, and separately controlling, by the RMC, a fan rotation speed of a fan window corresponding to nodes of the upper half rack and a fan rotation speed of a fan window corresponding to nodes of the lower half rack through a fan control board, to separately control fans in the upper half rack and fans in the lower half rack. 2. The rack fan speed regulation method based on a fan regulation policy table provided in a node BMC according to claim 1 , wherein the node BMC sends the fan duty value of the node corresponding to the node BMC to the node mid-plane via an I2C bus. 3. The rack fan speed regulation method based on a fan regulation policy table provided in a node BMC according to claim 2 , wherein the RMC obtains the fan duty value of the node mid-plane of each layer from the node mid-plan via an I2C bus. 4. The rack fan speed regulation method based on a fan regulation policy table provided in a node BMC according to claim 2 , wherein the RMC obtains the fan duty value of the node mid-plane of each layer from the node mid-plan via an I2C bus.
Assignees
Inventors
Classifications
comprising thermal management · CPC title
- H05K7/20209Primary
Thermal management, e.g. fan control · CPC title
Fan mounting or fan specifications · CPC title
Cooling means · CPC title
Thermal management, e.g. cabinet temperature control · CPC title
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Frequently asked questions
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- What does patent US10405455B2 cover?
- A rack fan speed regulation method based on a fan table provided in a node BMC is provided, which includes: providing a fan table reflecting a rack fan speed regulation policy in a BMC of each node server; acquiring, by the node BMC, a parameter reflecting a heat dissipation condition of a node motherboard; and acquiring, by the node BMC based on the speed regulation policy, a fan rotation spee…
- Who is the assignee on this patent?
- Inspur Electronic Information Industry Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H05K7/20209. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Sep 03 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).