Temperature monitoring systems and methods

• US 8,548,639 B2
• Filed: 07/15/2010
• Issued: 10/01/2013
• Est. Priority Date: 07/15/2010
• Status: Expired due to Fees

• Current Assignee: Seagate Technology LLC (Seagate Technology Holdings Plc)
• Original Assignee: Seagate Technology LLC (Seagate Technology Holdings Plc)
• Inventors: Lim, Kang Hai, Lee, Lucas Kong Yaw, Vitale, Scott Vincent, Ng, Choon Wei, Gu, Jun
• Primary Examiner(s): Ali, Mohammad
• Assistant Examiner(s): WHITTINGTON, ANTHONY T
• Application Number:
  US12/837,132
• Publication Number:
  US 20120016533A1
• Time in Patent Office: 1,174 Days
• Field of Search: 700/153, 700/202, 700/276, 700/300, 360/75, 365/222
• US Class Current: 700/300
• CPC Class Codes: G05B 15/02 electric
• CPC Class Codes: G06F 1/206 comprising thermal management
• CPC Class Codes: G11B 19/046 Detection or prevention or problems due to temperature
• CPC Class Codes: Y02D 10/00 Energy efficient computing, e.g. low power processors, power management or thermal management

Abstract

This disclosure is related to systems and methods for temperature monitoring of electronics, such as a controller or processor within a data storage device. In one example, a controller may be configured to determine an operation to perform and determine a temperature of electronics associated with executing the operation. The controller may then delay execution of the operation when the temperature is greater than a threshold.

Claims

1. A data storage device comprising:

a controller coupled to an interface and to a data storage medium, the controller configured to;

determine an operation to perform based on an instruction received via the interface from a host computer system;

determine whether the operation meets a condition for a continuous data access operation;

determine a temperature of electronics within the data storage device associated with executing the operation; and

delay execution of the operation when the temperature is greater than a threshold and when the operation meets the condition for the continuous data access operation,

wherein the controller is further configured to;

determine a location of the data storage medium for data associated with the instruction;

perform a first portion of the operation on the location;

determine the temperature of electronics associated with performing a second portion of the operation on another location of the data storage medium that is associated with the instruction;

compare the temperature to the threshold;

provide the delay to the second portion of the operation associated with the another location when the temperature is greater than the threshold;

and perform the second portion of the operation on the another location when the delay is completed.

2. The data storage device of claim 1 wherein the operation comprises reading or writing data.

3. The data storage device of claim 1 wherein the data storage medium comprises a magnetic disc data storage medium and wherein the location comprises a track on the rotatable data storage medium and the another location comprises a second track on the data storage medium.

4. The data storage device of claim 3 wherein the delay comprises a predetermined number of rotations of the data storage medium, wherein the predetermined number of rotations comprises at least one rotation.

5. The data storage device of claim 4 further comprising a head element coupled to the controller to allow reading and writing of data to the data storage medium and reducing power to the head element during the delay.

6. The data storage device of claim 5 further comprising a heater proximate to the head element and reducing power to the heater during the delay.

7. The data storage device of claim 1 further comprising a temperature sensor proximate to the electronics and configure to determine the temperature.

8. The data storage device of claim 7 wherein the electronics comprise a microprocessor within the controller and the controller is configured to reduce power to the microprocessor during the delay.

9. The data storage device of claim 7 wherein the delay is implemented via software within the controller and wherein the delay comprises a redundant cycle introduced into firmware of the controller.

10. The data storage device of claim 1 wherein the threshold is adjustable and the threshold is lowered as the in-service time of the data storage device increases.

11. The data storage device of claim 1 wherein the threshold is set based on a sampling of temperature measurements during a period of inactivity of the data storage device.

17. The data storage device of claim 1 wherein the condition for determining that the operation is the continuous data access operation is that the operation is a data access operation that spans multiple tracks on the data storage medium.

12. A controller within a data storage device comprising a data storage medium, the controller configured to:

determine an operation to perform;

determine whether the operation meets a condition for a continuous data access operation;

determine a temperature of electronics associated with executing the operation; and

delay execution of the operation when the temperature is greater than a threshold and when the operation meets the condition for the continuous data access operation,

wherein the delay is implemented via software within the controller and wherein the delay comprises a redundant cycle introduced into firmware of the controller, and

wherein the controller is further configured to;

determine a location of the data storage medium for data associated with the instruction;

perform a first portion of the operation on the location;

determine the temperature of electronics associated with performing a second portion of the operation on another location of the data storage medium that is associated with the instruction;

compare the temperature to the threshold;

provide the delay to the second portion of the operation associated with the another location when the temperature is greater than the threshold; and

perform the second portion of the operation on the another location when the delay is completed.

13. The controller of claim 12 wherein the controller is a data storage controller within the data storage device comprising the data storage medium, the operation is determined from an instruction received via an interface to a host computer system, and the operation comprises a data storage operation.

14. The data storage device of claim 13 wherein the data storage medium comprises a rotatable data storage medium and the delay comprises at least one rotation of the data storage medium.

15. A method comprising:

determining, via a controller, a data storage operation to perform based on an instruction received from an interface;

determining, via the controller, whether the operation meets a condition for a continuous data access operation; and

determining, via the controller, a temperature of electronics within a data storage device associated with executing the data storage operation; and

delaying, via the controller, execution of the data storage operation when the temperature is greater than a threshold and when the operation meets the condition for the continuous data access operation;

determining a location of the data storage medium for data associated with the instruction;

performing a first portion of the operation on the location;

determining the temperature of electronics associated with performing a second portion of the operation on another location of the data storage medium that is associated with the instruction;

comparing the temperature to the threshold;

providing the delay to the second portion of the operation associated with the another location when the temperature is greater than the threshold; and

performing the second portion of the operation on the another location when the delay is completed.

16. The method of claim 15 wherein the data storage device comprises a rotatable data storage medium and the delaying comprises a delay of at least one rotation of the rotatable data storage medium.