公开(公告)号：US20150147155A1

公开(公告)日：2015-05-28

申请号：US14607425

申请日：2015-01-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： WEIFENG DUAN ,  Xi Chao

IPC: F04D27/00 ,  G05B15/02 ,  F04D19/00

CPC classification number: F04D27/00 ,  F04D19/002 ,  F04D27/004 ,  G05B15/02

Abstract: A fan control method, apparatus, and system, so as to implement speed regulation and rotation direction control on a four-wire system counter-rotating fan with a conventional four-wire fan interface by using a PWM control bus. The method provided by the embodiments of the present invention includes: receiving a first fan regulation and control signal sent by a system control module; converting the first fan regulation and control signal to a forward-rotating control signal, a counter-rotating control signal, or a rotation direction switchover control signal according to a duty cycle range of the first fan regulation and control signal and a current rotation direction of the fan; and sending a control signal obtained by the conversion to a fan driving module, so that the fan driving module drives, according to the control signal obtained by the conversion, the fan to operate.

Abstract translation: 一种风扇控制方法，装置和系统，通过使用PWM控制总线对具有常规四线风扇接口的四线制逆向风扇进行调速和旋转方向控制。 本发明实施例提供的方法包括：接收由系统控制模块发送的第一风扇调节和控制信号; 根据第一风扇调节和控制信号的占空比范围和第一风扇调节和控制信号的当前旋转方向将第一风扇调节和控制信号转换为正转控制信号，反向旋转控制信号或旋转方向切换控制信号 风扇; 并将通过转换获得的控制信号发送到风扇驱动模块，使得风扇驱动模块根据通过转换获得的控制信号驱动风扇运行。