TW200715100A - System and method for controlling a processor fan's speed - Google Patents
System and method for controlling a processor fan's speedInfo
- 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
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.
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)
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)
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 |
-
2005
- 2005-10-14 TW TW94136034A patent/TWI289251B/en not_active IP Right Cessation
Cited By (1)
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 |