A method for controlling the fan speed of wireless base station equipment

Abstract

The invention provides a method for controlling rotation speed of fans of wireless base station equipment. A single plate sensor temperature threshold value and fan rotation speed form and delay down-regulation frequencies of each single plate are set in advance. Each single plate sensor temperature threshold value and fan rotation speed form comprises corresponding relations among a plurality of different temperature up-regulation threshold values, a plurality of different temperature down-regulation threshold values and the fan rotation speed. By means of combining steps of setting the temperature down-regulation threshold values and delay frequencies during down-regulation of the rotation speed and the like, required rotation speed of the fans for heat dissipation of each single plate is decided, the largest rotation speed required by a system is found out and transmitted to the fans, and accordingly, real-time control to the rotation speed of the fans is realized. A process for adjusting the rotation speed of the fans is gentle and smooth, relative stability of running work conditions of the fans is guaranteed, noises generated due to frequent adjustment of the rotation speed are eliminated, and simultaneously, the service life of the fans is further prolonged.

Description

technical field [0001] The invention relates to heat dissipation technology in the field of electronics or communication, in particular to a method for controlling the rotational speed of a fan of wireless base station equipment. Background technique [0002] With the miniaturization and high performance of electronic communication equipment and the continuous development of high integration of IC devices and the increasing operating frequency, the heat density of printed circuit boards is increasing, and the system power density is also increasing. , the heat dissipation problem of electronic communication equipment in a limited volume space is becoming more and more serious. In most cases, the forced air cooling method is used to ensure that the heat generated by electronic components can be discharged in time, and to ensure the safe and reliable operation of the system. . [0003] However, due to the use of fans, it will inevitably bring about problems such as noise, and...

AI Technical Summary

Problems solved by technology

[0012] a. The test basis for determining the four parameters of the speed reduction threshold temperature Tmin, full speed threshold temperature Tmax and their corresponding minimum speed Nmin and maximum speed Nmax of the fan speed regulation curve is only based on whether the equipment meets the normal temperature and the upper limit of long-term work The heat dissipation requirements under the temperature environment conditions are the premise, and the system noise requirements are not considered, and the organic unity of system heat dissipation and noise reduction has not been realized.

[0013] b. The speed of the fan is calculated linearly in real time according to the temperature T of the board sensor, which makes the adjustment of the speed of the fan very frequent and causes the phenomenon of speed oscillation (ping-pong effect). The working environment of the board is relatively stable, and it is easy to generate new fan noise and affect the life of the fan

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