Method and device for controlling fan speed of electronic equipment

Abstract

The invention discloses a method and a device for controlling the rotating speed of a fan of electronic equipment. The method comprises the following steps that the environment temperature and the temperature of the internal functional module devices of the electronic equipment are collected, and the rotating speed of the fan is dynamically adjusted according to the temperature value change of theenvironment temperature and the temperature of the functional module devices, so that the problems of fan noise, increased energy consumption or not timely heat dissipation of the electronic equipment caused by the fact that the adjustment of the rotating speed of the fan is not in time in the existing fan rotating speed adjustment technology can be solved; and the rotating speed adjusting process is gentle, no oscillation is generated, and the relative stability of the running working condition of the fan is guaranteed, noise caused by frequent adjustment of the rotating speed is eliminated,and meanwhile, the service life of the fan is prolonged.

Description

technical field [0001] The invention relates to fan speed control technology, in particular to a fan speed control method and control device for electronic equipment. Background technique [0002] When electronic equipment is working, most of its electrical energy is converted into heat, and the operating temperature of electronic devices directly affects its service life and stability. With the continuous development of electronic equipment miniaturization, high performance and large-scale integrated circuit technology, while the performance of electronic equipment is continuously improved, the power consumption and unit volume density of internal components are also continuously increased, and the heat dissipation problem of electronic equipment is becoming more and more serious. . In order to meet the reliability requirements, most electronic equipment adopts forced air cooling to ensure that the heat generated by electronic components can be discharged in time. The larg...

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Problems solved by technology

[0003] In order to solve the heat dissipation and noise control balance requirements of electronic equipment, heat dissipation solutions with variable fan speeds such as temperature-controlled fans and linear voltage regulation and speed regulation are generally used at present: temperature-controlled fan solutions, temperature-controlled fans are integrated with temperature sensors, The cooling air temperature change is used as the basis for fan speed regulation. When installed at the air inlet of the equipment, it cannot reflect the heat dissipation requirements of the actual operating conditions of the various functional modules inside the equipment. When the working conditions of electronic equipment increase and the heat increases, the heat will not be dissipated in a timely and effective manner. The reliability will not be guaranteed; when the working condition is reduced and the heat is reduced, the air volume margin of the fan is too large, and its aerodynamic noise is relatively large; the linear voltage regulation and speed regulation scheme is based on the premise of meeting the reliability requirements of the equipment. The fan linear speed regulation curve is established based on parameters such as the speed lower limit temperature corresponding to the speed, the speed upper limit temperature corresponding to the speed, etc., and the fan speed is calculated in real time according to the temperature of the functional module device and converted into the fan driving voltage. , the adjustment of fan speed is very frequent and produces speed oscillation phenomenon, which is easy to generate new fan noise and affect the life of the fan, and the control circuit is relatively complicated

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