A system and method for reducing fan noise during startup
A noise reduction and fan technology, applied in the field of noise reduction, can solve the problems of increased power consumption, noise pollution, slow startup speed, etc., and achieve the effect of reducing power consumption and reducing startup noise
Active Publication Date: 2019-07-26
ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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Problems solved by technology
It can be seen that in the prior art, during the startup process of the equipment, due to the slow startup speed of the BMC and various temperature sensors, the fan in the equipment rotates at full speed in neutral position. On the one hand, the startup noise is very loud, forming noise pollution; On the other hand, increased power consumption
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[0029] The core of the present invention is to provide a system and method for reducing fan noise during startup, which reduces startup noise and power consumption.
[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0031] Please refer to figure 1 , figure 1 A schematic structural diagram of a system for reducing fan noise during startup provided by the present invention, the system inclu...
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The invention discloses a system for lowering fan noise in the start-up process. The system comprises a manager controller BMC, a low-speed control unit and a fan. The low-speed control unit is used for generating a preset first pulse width modulation (PWM) signal after receiving an initial start-up signal, and further used for stopping outputting the first PWM signal after receiving a complete start-up signal and used for controlling the BMC to generate a second PWM signal. The starting speed of the low-speed control unit is larger than that of the BMC and that of a temperature sensor. The duty ratio of the first PWM signal is smaller than that of the corresponding PWM signal generated when the fan is controlled to rotate at a full speed. The fan is used for receiving the first PWM signal or the second PWM signal and adjusting the rotating speed to the rotating speed corresponding to the signal received by the fan. According to the system, it is guaranteed that the fan keeps the low initial rotating speed, and the start-up noise is lowered; and electricity consumption is reduced. The invention further provides a method for lowering the fan noise in the start-up process. The method has the beneficial effects the same as those of the above system for lowering the noise.
Description
technical field [0001] The invention relates to the technical field of noise reduction, in particular to a system and method for fan noise reduction during startup. Background technique [0002] With the development of the cloud computing era, the number of various devices in the data center is increasing. These devices need to process a large amount of data during the working process, resulting in severe heat generation of the device. The general method to deal with the heat generation of the device is to install a fan on the heat-prone board inside the device. In the prior art, the specific control process of the fan is that the temperature sensor senses the temperature on the board corresponding to the fan in the device, and then the temperature sensor feeds back the temperature to the BMC (Baseboard Manager Controller, manager controller), and the BMC outputs the temperature according to the temperature. The corresponding pulse width modulated signal directly controls t...
Claims
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IPC IPC(8): F04D27/00F04D29/66
CPCF04D27/004F04D29/663
Inventor 史文举
Owner ZHENGZHOU YUNHAI INFORMATION TECH CO LTD