Information handling system dynamic acoustical management
AssigneeDell Products L.P.
InventorsChris E. Peterson, Hasnain Shabbir, Paul T. Artman
Life of this patent
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Abstract
Acoustics management at an information handling system provides reduced acoustic noise with limited performance impact by dynamically changing power dissipation as a function of cooling fan speed and ambient temperature so that preemptive power restrictions prevent excessive thermal conditions that lead to excessive cooling fan speeds and associated acoustics. A maximum cooling fan speed of less than an available maximum is set and maintained by reducing power dissipation unless power dissipation reaches a minimum, after which the minimum power dissipation is maintained and cooling fan speed is allowed to increase.
Claims20
An information handling system comprising:
- a housing;
- plural components disposed in the housing and operable to cooperate to process information;
- a cooling fan disposed in the housing and operable to spin at varying speeds to transfer thermal energy from the housing with a cooling airflow proximate at least some of the components;
- a thermal sensor operable to determine thermal conditions of the housing;
- a power manager operable to manage power applied to the plural components;
- and
- a fan controller interfaced with the cooling fan, the thermal sensor and the power manager, the fan controller operable to adjust power dissipation of power by the power manager as a function of cooling fan speed and housing thermal conditions to selectively maintain cooling fan speed within a predetermined acoustical limit.
A method for managing acoustics at an information handling system, the method comprising:
- setting a first maximum cooling fan speed of less than an available maximum cooling fan speed;
- detecting predetermined thermal conditions at the information handling system;
- and
- in response to detecting, managing power dissipation by components to maintain a cooling fan speed of not greater than the maximum cooling fan speed.
An information handling system acoustics manager comprising:
- a processor operable to execute instructions;
- a memory operable to store the instructions;
- instructions stored in the memory for execution by the processor, the instructions operable to:
- set a first maximum cooling fan speed of less than an available maximum cooling fan speed;
- and
- reduce power dissipation by one or more components of an information handling system to maintain thermal conditions associated with the first maximum cooling fan speed.
Dependencies are inferred from the claim text.