Patent ID: 9732759
Date: 2017-08-15
CPC Classifications: F04D,H05K,Y02B

Claim:
1. A method for controlling subrack fans, comprising: forming multiple heat dissipation air channels respectively corresponding to multiple boards by installing the multiple boards with high-power devices in different areas of a subrack; installing a fan set comprising multiple heat dissipation fans on the subrack; dividing the fan set into multiple fan subsets corresponding to the multiple heat dissipation air channels respectively so as to supply air to the corresponding board by each of the multiple fan subsets through the corresponding heat dissipation air channel; detecting temperature of each board and a rotating speed of the corresponding fan subset in real time; regulating the rotating speeds of the fan subsets according to detection results to enable the rotating speed of any of the fan subsets to be increased or decreased with increase or decrease of the temperature of the corresponding board; further comprising: assigning rotating speed detection signal of each fan in the fan set with a number, and making the number of each rotating speed detection signal consistent with a number of each rotating speed detection slot in a fan control board; assigning control signal of each fan in the fan set with a number, and making the number of each control signal consistent with the number of each control slot in the fan control board; arranging the fans of the fan set in a format of matrix; separately installing the control slots for the control lines of the fans and the rotating speed detection slots for the rotating speed detection lines of the fans, wherein the control slots of the fans in the same row are formed together and the rotating speed detection slots of the fans in the same column are formed together; and determining a position of each fan in the fan set by a matrix scanning detection method.