METHOD for AUTO-REGULATING FAN SPEED
AssigneeCompal Electronics, Inc.
InventorsChi-Wei Tien, Jenq-Haur Pan
Life of this patent
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Abstract
The present invention relates to a method for auto-regulating the fan speed. The method includes detecting the temperature of a thermal source. When the temperature of the thermal source exceeds a target value, the fan speed of the fan is regulated according to a relation between the temperature of the thermal source and the fan speed of the fan. Thereafter, the voltage applied to the fan is micro-adjusted through a feedback control mechanism so that the fan speed of the fan reaches a specified speed in steps.
Claims34
A method for auto-regulating a fan speed, comprising:
- detecting a temperature of a thermal source, wherein when the temperature of the thermal source exceeds a target value, an embedded controller provides a supply voltage to trigger a cooling fan;
- judging a relation between the fan speed of the cooling fan and the target value;
- and
- gradually decreasing the supply voltage through the embedded controller for gradually reducing the fan speed of the cooling fan until the fan speed substantially equals to the target value.
A method for auto-regulating a fan speed, comprising:
- detecting a temperature of a thermal source, wherein when the temperature of the thermal source exceeds a target value, an embedded controller provides a supply voltage to trigger a cooling fan;
- judging a relation between the fan speed of the cooling fan and the target value;
- and
- gradually increasing the supply voltage through the embedded controller for gradually increasing the fan speed of the cooling fan until the fan speed substantially equals to the target value.
A method for auto-regulating a fan speed, comprising:
- determining a state of a cooling fan;
- providing a prescribed voltage to drive the cooling fan by an embedded controller;
- detecting the fan speed of the cooling fan;
- judging a relation between the fan speed and a target value;
- and
- gradually decreasing the supply voltage through the embedded controller until the fan speed of the cooling fan substantially equals to the target value.
A method for auto-regulating a fan speed, comprising:
- determining a state of the cooling fan;
- providing a prescribed voltage to drive the fan by an embedded controller;
- detecting the fan speed of the cooling fan;
- judging a relation between the fan speed and a target value;
- and
- gradually increasing the supply voltage through the embedded controller until the fan speed of the cooling fan is substantially equals to the target value.
Dependencies are inferred from the claim text.