Patent Application
20140201559
1. Technical Field
The present disclosure relates to a control system for fans.
2. Description of Related Art
A server cabinet may comprise a plurality of servers, and a number of fans for dissipating heat generated by the servers. A number of temperature sensors are configured to sense a temperature of each server, and rotation speeds of the fans are controlled according to the sensed temperatures. However, temperature sensors are expensive.
Therefore, there is room for improvement in the art.
Many aspects of the present disclosure can be better understood with reference to the following drawing(s). The components in the drawing(s) are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present disclosure. Moreover, in the drawing(s), like reference numerals designate corresponding parts throughout the several views.
The disclosure is illustrated by way of example and not by way of limitation in the figures of the accompanying drawings in which like references indicate similar elements. It should be noted that references to “an” or “one” embodiment in this disclosure are not necessarily to the same embodiment, and such references mean “at least one.”
The PDU 40 comprises a plurality of power-output terminals, such as a first power-output terminal 50 and a second power-output terminal 60. The PDU 40 outputs corresponding power to the first and second server cabinets 20 and 80 through the first and second power-output terminals 50 and 60, respectively.
The processing module 107 is coupled to the storage module 104. The storage module 104 stores a plurality of programs to be executed by the processing module 107. The storage module 104 stores a transmitting unit 100, a detecting unit 102, a mapping unit 105, and an outputting unit 106.
The transmitting unit 100 obtains power information that the PDU 40 outputs to the first and second server cabinets 20 and 80 through the first and second power-output terminals 50 and 60, respectively.
The mapping unit 105 comprises control information associated with the power information of the corresponding power-output terminals. For example, the mapping unit 105 comprises first control information associated with first power information of the first power-output terminal 50, second control information associated with second power information of the first power-output terminal 50, and third control information associated with third power information of the second power-output terminal 60.
The detecting unit 102 obtains the corresponding control information from the mapping unit 105 according to the power information. In the embodiment, the different control information corresponds to pulse width modulation (PWM) signals having different duty cycles.
The outputting unit 106 outputs the PWM signals to the fan modules to dissipate heat generated by the corresponding server cabinets.
For example, when the power detecting unit 102 obtains the first power information from the first power-output terminal 50, the power detecting unit 102 obtains the first control information from the mapping unit 105, and generates the PWM signal corresponding to the first control information. The outputting unit 106 outputs the PWM signal generated by the power detecting unit 102 to the first fan module 30.
In step S1, the detecting unit 102 detects the power outputted by each power-output terminal.
In step S2, the power detecting unit 102 obtains the corresponding control information from the mapping unit 105 according to the power information, and generates the PWM signal corresponding to the control information.
In step S3, the outputting unit 106 outputs the PWM signal generated by the power detecting unit 102 to the corresponding fan module.
While the disclosure has been described by way of example and in terms of a preferred embodiment, it is to be understood that the disclosure is not limited thereto. On the contrary, it is intended to cover various modifications and similar arrangements as would be apparent to those skilled in the art. Therefore, the range of the appended claims should be accorded the broadest interpretation so as to encompass all such modifications and similar arrangements.
| Number | Date | Country | Kind |
|---|---|---|---|
| 102101853 | Jan 2013 | TW | national |
