Server fan speed control method and device

Abstract

The invention provides a server fan speed control method and a device. Under the control of a server to a fan, different control frequencies are adopted for a plurality of fans so that vibration points and noise points of each fan are at different frequencies. In addition, rotary speed is no longer fixed at the same speed, instead, the rotary speed is calculated according to the sampling values ofa temperature acquisition module to meet the base speed and the current maximum speed of cooling requirement. Through the control of the server, multiple fans adjust dynamically in the range of the lowest and the highest speed, the time for each fan to reach the maximum rotary speed is different so that noise is reduced effectively and resonance phenomenon is avoided. In terms of hardware, the way that one signal controls multiple fans is changed, each fan is corresponding to one single control signal, so that the condition that all the fans fail to operate if a driving end of a fan is fail is avoided, and stability of system is strengthened.

Description

technical field [0001] The invention relates to the technical field of server heat dissipation, and specifically provides a server fan speed control method and device. Background technique [0002] With the continuous development of the Internet age, servers have been widely used and penetrated into people's production and life. As for the server, the normal cooling function is the basic condition to ensure the normal operation of the server. [0003] There are many components in the current server with high heat dissipation power consumption. In order to ensure the normal operation of the server, reliable and effective heat dissipation measures are necessary. Current servers, regardless of whether they are general-purpose or rack-type, use fans to dissipate heat. The greater the heat dissipation power consumption, the possible solution is to choose a fan with a higher power or increase the number of fans. In the prior art, a common PWM control signal is used, and multiple...

AI Technical Summary

Problems solved by technology

In the prior art, using a common PWM control signal, multiple fans run at the same frequency, which is likely to cause multiple superposition of vibration and noise frequencies

If there is a hardware problem at the drive end of a fan, it will affect the overall PWM control signal, thereby affecting the control of other fans

Because the fan will generate vibration and noise during operation, especially the vibration will seriously affect the performance of the server, and sometimes it will cause the server to go down.

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