Stepless speed adjusting method and control system for fan speed of wireless base station equipment

Abstract

The invention provides a stepless speed adjusting method and control system for the fan speed of wireless base station equipment. The adjustable resolution ratio of the fan speed is accurate to the inherently adjusted resolution ratio of the fan, and the fan speed adjustment is stepless. The primary fan speed is calculated by establishing a fan speed adjustment function via test data, and different weighted filtering methods are used to calculate the actual fan speed according to the fan speed variation trend. By using the stepless speed adjusting method and control system for the fan speed, no matter the adjustable resolution ratio of the fan speed is the fan speed adjustment function or stepless, the adjustment accuracy of the system can be improved, and an adjustment space is provided for system noise reduction. Weighed filtering is carried out on the actual fan speed according to the fan speed variation trend, quick following can be realized when the fan speed is increased, and slow following can be realized when the fan speed is reduced. Not only can the system satisfy the heat radiation requirement, but also power consumption is reduced.

Description

technical field [0001] The invention relates to heat dissipation technology in the field of electronics or communication, in particular to a stepless speed regulation method and control system for a fan of wireless communication base station equipment. Background technique [0002] In the context of continuous upgrading and integration of communication equipment, the heat density of circuit boards is getting higher and higher. In communication equipment with limited space, the problem of heat dissipation is becoming more and more difficult. The usual method of only relying on heat sinks is difficult to meet the heat dissipation requirements. Using fans to force cooling is currently a more effective and convenient method. [0003] However, the use of fans also faces some problems such as noise, power consumption and reliable speed, and there are often contradictions between noise, power consumption and reliable speed. How to balance the contradiction between the reliable spe...

AI Technical Summary

Problems solved by technology

[0006] (1) In the process of adjusting the speed of the fan, when there is a change in the gear position, it is often accompanied by a large adjustment. The adjustment action itself will generate a lot of noise, and at the same time, there will be damage to the fan itself.

[0007] (2) The existing hierarchical adjustment method itself has a corresponding non-economic speed problem, that is, the actual demand for air volume is not large, but due to the restriction of the fan level, it can only be adjusted to a certain level, resulting in increased power consumption waste of

[0008] (3) According to figure 1 The corresponding relationship in the system often leads to immediately adjusting to the corresponding gear when there is a certain demand, and when the gear changes greatly, it will cause a large change in the temperature of the temperature sensor, which in turn will cause a large gear change. Adjustment, which is prone to shock phenomenon

[0009] Therefore, the existing method of stepwise regulation of fans has the potential risk of non-economic speed problems and shocks, and may reduce the service life of fans

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