Fan speed control system
First Claim
1. A fan speed control system for an electronic equipment enclosure comprising:
- means for determining temperature at a plurality of locations within the enclosure;
means for determining operating parameters for the fan control system;
means for setting operating speed of at least one cooling fan; and
means for exchanging information signals relating to fan speed control system operation with an external controller.
9 Assignments
0 Petitions
Accused Products
Abstract
A fan speed control system (200) for an electronic equipment enclosure comprises means for determining temperature (201, 202, 203, 210, 211) at a plurality of locations within the enclosure, means for determining operating parameters (201, 202, 203, 212) for the fan control system, means for setting operating speed (201) of at least one cooling fan, and means for exchanging information signals (205, 217, 218) relating to fan speed control system operation with an external controller. A method is also provided for controlling fan speed for an electronic equipment enclosure comprising the steps of determining temperature at a plurality of locations within the enclosure, determining operating parameters for the fan control system, setting operating speed of at least one cooling fan, and exchanging information signals relating to fan speed control system operation with an external controller.
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Citations
31 Claims
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1. A fan speed control system for an electronic equipment enclosure comprising:
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means for determining temperature at a plurality of locations within the enclosure;
means for determining operating parameters for the fan control system;
means for setting operating speed of at least one cooling fan; and
means for exchanging information signals relating to fan speed control system operation with an external controller. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 22, 23)
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14. A method for controlling fan speed for an electronic equipment enclosure, the method comprising the steps of:
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(a) determining temperature at a plurality of locations within the enclosure;
(b) determining operating parameters for the fan control system;
(c) setting operating speed of at least one cooling fan; and
(d) exchanging information signals relating to fan speed control system operation with an external controller. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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24. A method for controlling fan speed for an electronic equipment enclosure, the method comprising the steps of:
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(a) determining temperature at a plurality of locations within the enclosure;
(b) determining operating parameters for the fan control system, at least in part, by exchanging information signals relating to fan speed control system operation with an external controller; and
(c) setting operating speed of at least one cooling fan. - View Dependent Claims (25, 26)
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27. A method for controlling cooling fan operating speed in an electronic equipment enclosure, the method comprising the steps of:
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(a) setting the cooling fan speed to full speed for a predetermined time period;
(b) reading operating temperature information from a temperature sensor;
(c) computing a pulse width for a pulse-width modulated fan control output signal; and
(d) applying the pulse width modulated fan control output signal to the cooling fan to control its operating speed. - View Dependent Claims (28, 29, 30, 31)
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Specification