TW200715100A - System and method for controlling a processor fan's speed - Google Patents

System and method for controlling a processor fan's speed

Info

Publication number
TW200715100A
TW200715100A TW094136034A TW94136034A TW200715100A TW 200715100 A TW200715100 A TW 200715100A TW 094136034 A TW094136034 A TW 094136034A TW 94136034 A TW94136034 A TW 94136034A TW 200715100 A TW200715100 A TW 200715100A
Authority
TW
Taiwan
Prior art keywords
fan
temperature
processor
pwm
speed
Prior art date
Application number
TW094136034A
Other languages
Chinese (zh)
Other versions
TWI289251B (en
Inventor
Sung-Jen Hsiang
Yuh-Ching Chang
Chien-Yi Lo
Puh-Yun Lee
Original Assignee
Hon Hai Prec Ind Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hon Hai Prec Ind Co Ltd filed Critical Hon Hai Prec Ind Co Ltd
Priority to TW94136034A priority Critical patent/TWI289251B/en
Publication of TW200715100A publication Critical patent/TW200715100A/en
Application granted granted Critical
Publication of TWI289251B publication Critical patent/TWI289251B/en

Links

Landscapes

  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Control Of Positive-Displacement Air Blowers (AREA)
  • Control Of Temperature (AREA)

Abstract

The present invention provides a method for controlling a processor fan's speed. The method includes: reading a standard temperature Tc of a Central Processing Unit (CPU); reading a thermal diode's temperature Td and a system ambient temperature Ta; comparing Td with a minimum temperature Tl, at which the processor fan starts to be heated; if Td> Tl, increasing Pulse-Width Modulation (PWM) Fan Duty Cycle to 100%; if Td ≤ Tl, comparing a critical temperature T0 with Ta; if Ta> T0, increasing PWM Fan Duty Cycle to 100%; if Ta ≤ T0, maintaining the processor fan Duty Circle at 40%; sending the PWM Fan Duty Circle to a fan speed controller. By utilizing the present invention, the operating system can work stably.
TW94136034A 2005-10-14 2005-10-14 System and method for controlling a processor fan's speed TWI289251B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW94136034A TWI289251B (en) 2005-10-14 2005-10-14 System and method for controlling a processor fan's speed

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW94136034A TWI289251B (en) 2005-10-14 2005-10-14 System and method for controlling a processor fan's speed

Publications (2)

Publication Number Publication Date
TW200715100A true TW200715100A (en) 2007-04-16
TWI289251B TWI289251B (en) 2007-11-01

Family

ID=39294941

Family Applications (1)

Application Number Title Priority Date Filing Date
TW94136034A TWI289251B (en) 2005-10-14 2005-10-14 System and method for controlling a processor fan's speed

Country Status (1)

Country Link
TW (1) TWI289251B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI481982B (en) * 2011-02-15 2015-04-21 Nuvoton Technology Corp Processor temperature controlling method and controller

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI398754B (en) * 2010-06-23 2013-06-11 Hon Hai Prec Ind Co Ltd System and method for controlling temperature of a computer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI481982B (en) * 2011-02-15 2015-04-21 Nuvoton Technology Corp Processor temperature controlling method and controller

Also Published As

Publication number Publication date
TWI289251B (en) 2007-11-01

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Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees