Patent
Thermal protection control method and system
| العنوان: | Thermal protection control method and system |
|---|---|
| Patent Number: | 8,699,196 |
| تاريخ النشر: | April 15, 2014 |
| Appl. No: | 13/163023 |
| Application Filed: | June 17, 2011 |
| مستخلص: | A thermal protection method and system of an Integrated Circuit (IC) are provided, which are applicable to a wireless terminal equipment. The method includes: measuring a temperature value of a protection point; comparing the measured temperature value with a thermal protection temperature threshold; and starting a protection measure when the measured temperature value reaches or exceeds the thermal protection temperature threshold and a duration of reaching or exceeding the thermal protection temperature threshold exceeds a preset time. |
| Inventors: | Jin, Linfang (Shenzhen, CN); Wu, Guzhang (Shenzhen, CN); Zhou, Taotao (Shenzhen, CN); Feng, Laili (Schenzhen, CN) |
| Assignees: | Huawei Device Co., Ltd. (Shenzhen, CN) |
| Claim: | 1. A method for controlling thermal protection, comprising: measuring a temperature value of a protection point of an Integrated Circuit (IC) by disposing temperature sensor units close to the protection point of the IC; comparing the measured temperature value with a thermal protection temperature threshold; starting timing when the measured temperature value reaches or exceeds the thermal protection temperature threshold; and starting a protection when a duration of the timing reaches or exceeds the preset time, wherein the temperature sensor units comprise a main temperature sensor unit and an auxiliary temperature sensor unit, wherein the thermal protection temperature threshold comprises an alarm threshold, a protection threshold, an alarm rough threshold, and a protection rough threshold, wherein the alarm threshold is lower than the protection threshold, wherein the alarm rough threshold is lower than the protection rough threshold, wherein comparing the measured temperature value with the thermal protection temperature threshold comprises comparing a temperature value measured by the main temperature sensor unit with the alarm threshold and the protection threshold, and comparing a temperature value measured by the auxiliary temperature sensor unit with the alarm rough threshold, wherein starting the protection when the measured temperature value reaches or exceeds the thermal protection temperature threshold and the duration of reaching or exceeding the thermal protection temperature threshold exceeds the preset time comprises reporting alarm information when a first status is reached and a duration of the first status exceeds a first preset time, wherein the first status is a status that the temperature value measured by the auxiliary temperature sensor unit reaches or exceeds the alarm rough threshold and the temperature value measured by the main temperature sensor unit reaches or exceeds the alarm threshold, and starting a protection mode when a second status is reached and a duration of the second status exceeds a second preset time, and wherein the second status is a status that the temperature value measured by the auxiliary temperature sensor unit reaches or exceeds the protection rough threshold, and the temperature value measured by the main temperature sensor unit reaches or exceeds the protection threshold. |
| Claim: | 2. The method according to claim 1 , wherein if the temperature value measured by the main temperature sensor unit reaches or exceeds the alarm threshold, and the temperature value measured by the auxiliary temperature sensor unit does not reach the alarm rough threshold, then the main temperature sensor unit becomes ineffective and does not provide thermal protection control, and the thermal protection control is provided by the auxiliary temperature sensor unit. |
| Claim: | 3. The method according to claim 1 , further comprising stopping the protection to restore to a normal mode after starting the protection when the temperature measured by the temperature sensor unit reaches or is lower than a restoration threshold, and a duration of reaching or being lower than the restoration threshold exceeds a preset time, wherein the restoration threshold is lower than the temperature threshold. |
| Claim: | 4. The method according to claim 1 , wherein the protection mode comprises shutdown, a low power consumption mode of closing a radio frequency module, a standby mode of only maintaining registration, down regulating a limitation on the highest transmit power, and down regulating a transmit power without conforming to a protocol and a base station requirement. |
| Claim: | 5. A method for controlling thermal protection, comprising: measuring a temperature value of a protection point of an Integrated Circuit (IC) by disposing temperature sensor units close to the protection point of the IC; comparing the measured temperature value with a thermal protection temperature threshold; starting timing when the measured temperature value reaches or exceeds the thermal protection temperature threshold; and starting a protection when a duration of the timing reaches or exceeds the preset time, wherein the temperature sensor units comprise N temperature sensor units, wherein N is a natural number greater than or equal to 3, wherein before comparing the measured temperature value with the thermal protection temperature threshold, the method further comprises determining whether the N temperature sensor units are effective temperature sensor units, wherein starting the protection when the measured temperature value reaches or exceeds the thermal protection temperature threshold and the duration of reaching or exceeding the thermal protection temperature threshold exceeds the preset time comprises starting the protection when the effective temperature sensor units reach an effective status, and a duration of the effective status exceeds a preset time, and wherein the effective status is a status that the temperature measured by the effective temperature sensor units reaches or exceeds the thermal protection temperature threshold, and the number of the effective temperature sensor units by which the measured temperature reaches or exceeds the thermal protection temperature threshold is greater than or equal to N/2. |
| Claim: | 6. The method according to claim 5 , wherein when the thermal protection temperature threshold comprises the alarm threshold and the protection threshold, comparing the measured temperature value with the thermal protection temperature threshold comprises comparing a temperature measured by each effective temperature sensor unit with the alarm threshold, and comparing the temperature measured by each effective temperature sensor unit with the protection threshold, and wherein starting the protection when the effective temperature sensor units reach the effective status, and the duration of the effective status exceeds the preset time comprises reporting alarm information when the effective temperature sensor units reach a first status, and a duration of the first status exceeds a first preset time, wherein the first status is a status that the temperature measured by the effective temperature sensor units reaches or exceeds the alarm threshold, and the number of the effective temperature sensor units by which the measured temperature reaches or exceeds the alarm threshold is greater than or equal to N/2, and starting a protection mode when the effective temperature sensor units reach a second status, and a duration of the second status exceeds a second preset time, wherein the second status is a status that the temperature measured by the effective temperature sensor units reaches or exceeds the protection threshold, and the number of the effective temperature sensor units by which the measured temperature reaches or exceeds the protection threshold is greater than or equal to N/2. |
| Claim: | 7. The method according to claim 6 , wherein the protection mode comprises shutdown, a low power consumption mode of closing a radio frequency module, a standby mode of only maintaining registration, down regulating a limitation on the highest transmit power, and down regulating a transmit power without conforming to a protocol and a base station requirement. |
| Claim: | 8. The method according to claim 5 , further comprising stopping the protection to restore to a normal mode after starting the protection when the temperature measured by the temperature sensor unit reaches or is lower than a restoration threshold and a duration of reaching or being lower than the restoration threshold exceeds a preset time, and wherein the restoration threshold is lower than the temperature threshold. |
| Claim: | 9. A thermal protection control system, comprising: a temperature sensor unit disposed close protection point and configured to measure a temperature value of the protection point; a timing unit configured to count time; a control unit configured to compare the temperature value measured by the temperature sensor unit with a thermal protection temperature threshold, control the timing unit to start timing when a comparison result of the control unit is that the temperature value measured by temperature sensor unit reaches or exceeds the thermal protection temperature threshold, and reset the timing unit when the comparison result of the control unit is that the temperature value measured by the temperature sensor unit is lower than the thermal protection temperature threshold; and a thermal protection device configured to take a protection on the protection point when the time counted by the timing unit exceeds a preset time, wherein the temperature sensor unit comprises a main temperature sensor unit and an auxiliary temperature sensor unit, wherein the thermal protection temperature threshold comprises an alarm threshold, a protection threshold, an alarm rough threshold, and a protection rough threshold, wherein the timing unit comprises a first timing unit and a second timing unit, wherein the control unit comprises a comparison unit, a determination unit, and a timing unit, wherein the comparison unit is configured to compare the temperature value measured by the main temperature sensor unit with the alarm threshold and the protection threshold, and compare the temperature value measured by the auxiliary temperature sensor unit with the protection rough threshold, wherein the determination unit is configured to determine whether a first status is reached, and whether a second status is reached, wherein the first status is a status that a comparison result of the comparison unit in which the temperature measured by the auxiliary temperature sensor unit reaches or exceeds the alarm rough threshold and the temperature measured by the main temperature sensor unit reaches or exceeds the alarm threshold, wherein the second status is a status that the comparison result of the comparison unit in which the temperature measured by the auxiliary temperature sensor unit reaches or exceeds the protection rough threshold, and the temperature measured by the main temperature sensor unit reaches or exceeds the protection threshold, wherein the timing control unit is configured to start the first timing unit when a determination result of the determination unit is that the first status is reached, reset the first timing unit when the determination result of the determination unit is that the first status is not reached, start the second timing unit when the determination result of the determination unit is that the second status is reached, and reset the second timing unit when the determination result of the determination unit is that the second status is not reached, and wherein the protection device comprises an alarm device configured to report alarm information when the time counted by the first timing unit reaches a first preset time, and a protection mode running device configured to start a protection mode when the time counted by the second timing unit reaches a second preset time. |
| Claim: | 10. The system according to claim 9 , wherein the thermal protection temperature threshold comprises a restoration threshold, wherein the restoration threshold is lower than the alarm threshold, wherein the timing unit further comprises a third timing unit, wherein the determination unit is further configured to determine whether the temperature measured by the main temperature sensor unit reaches or is lower than the restoration threshold after the protection mode running device starts the protection mode, wherein the timing control unit is further configured to start the third timing unit when the determination result of the determination unit is that the temperature measured by the main temperature sensor unit reaches or is lower than the restoration threshold after the protection mode running device starts the protection mode, and reset the third timing unit when the determination result of the determination unit is that the temperature measured by the main temperature sensor unit is larger than the restoration threshold after the protection mode running device starts the protection mode, and wherein the system further comprises a restoration device configured to stop the protection mode and enter a normal mode when the time counted by the third timing unit reaches a third preset time. |
| Claim: | 11. A thermal protection control system, comprising: a temperature sensor unit disposed close to a protection point and configured to measure a temperature value of the protection point; a timing unit configured to count time; a control unit configured to compare the temperature value measured by the temperature sensor unit with a thermal protection temperature threshold, control the timing unit to start timing when a comparison result of the control unit is that the temperature value measured by temperature sensor unit reaches or exceeds the thermal protection temperature threshold, and reset the timing unit when the comparison result of the control unit is that the temperature value measured by the temperature sensor unit is lower than the thermal protection temperature threshold; and a thermal protection device configured to take a protection on the protection point when the time counted by the timing unit exceeds a preset time, wherein the temperature sensor unit comprises N temperature sensor units, wherein N is a natural number greater than or equal to 3, and wherein the control unit comprises: a first determination unit configured to determine whether the N temperature sensor units are effective temperature sensor units; a second determination unit configured to determine whether an effective status is reached, wherein the effective status is a status that the temperature measured by the effective temperature sensor units determined by the first determination unit reaches or exceeds the thermal protection temperature threshold, and the number of the effective temperature sensor units by which the measured temperature reaches or exceeds the thermal protection temperature threshold is greater than or equal to N/2; and a timing control unit configured to start the timing unit to count time when a determination result of the second determination unit is that the effective status is reached, and reset the timing unit when the determination result of the second determination unit is that the effective status is not reached. |
| Claim: | 12. The system according to claim 11 , wherein the thermal protection temperature threshold comprises an alarm threshold and a protection threshold, wherein the timing unit comprises a first timing unit and a second timing unit, wherein the second determination unit is specifically configured to determine whether a first status is reached, and whether a second status is reached, wherein the first status is a status that the temperature measured by the effective temperature sensor units reaches or exceeds the alarm threshold, and the number of the effective temperature sensor units by which the measured temperature reaches or exceeds the alarm threshold is greater than or equal to N/2, wherein the second status is a status that the temperature measured by the effective temperature sensor units reaches or exceeds the protection threshold, and the number of the effective temperature sensor units by which the measured temperature reaches or exceeds the protection threshold is greater than or equal to N/2, wherein the timing control unit is specifically configured to start the first timing unit to count time when a determination result of the second determination unit is that the first status is reached, reset the first timing unit when the determination result of the second determination unit is that the first status is not reached, start the second timing unit to count time when the determination result of the second determination unit is that the second status is reached, and reset the second timing unit when the determination result of the second determination unit is that the second status is not reached, and wherein the thermal protection device comprises an alarm device configured to report alarm information when the first timing unit reaches a first preset time, and a protection mode running device configured to start a protection mode when the time counted by the second timing unit reaches a second preset time. |
| Claim: | 13. The system according to claim 12 , wherein the thermal protection temperature threshold comprises a restoration threshold, wherein the restoration threshold is lower than the alarm threshold, wherein the timing unit further comprises a third timing unit, wherein the second determination unit is further configured to determine whether a third status is reached, wherein the third status is a status that the temperature measured by the effective temperature sensor units reaches or is lower than the restoration threshold and the number of the effective temperature sensor units by which the measured temperature reaches or exceeds the restoration threshold is greater than or equal to N/2 after the protection mode running device starts the protection mode, wherein the timing control unit is further configured to start the third timing unit when the determination result of the second determination unit is that the third status is reached, and reset the third timing unit when the determination result of the second determination unit is that the third status is not reached, and wherein the system further comprises a restoration device configured to stop the protection mode and enter a normal mode when the time counted by the third timing unit reaches a third preset time. |
| Claim: | 14. The system according to claim 11 , wherein the thermal protection temperature threshold comprises a restoration threshold, wherein the restoration threshold is lower than the alarm threshold, wherein the timing unit further comprises a third timing unit, wherein the second determination unit is further configured to determine whether a third status is reached, wherein the third status is a status that the temperature measured by the effective temperature sensor units reaches or is lower than the restoration threshold and the number of the effective temperature sensor units by which the measured temperature reaches or exceeds the restoration threshold is greater than or equal to N/2 after the protection mode running device starts the protection mode, wherein the timing control unit is further configured to start the third timing unit when the determination result of the second determination unit is that the third status is reached, and reset the third timing unit when the determination result of the second determination unit is that the third status is not reached, and wherein the system further comprises a restoration device configured to stop the protection mode and enter a normal mode when the time counted by the third timing unit reaches a third preset time. |
| Current U.S. Class: | 361/103 |
| Patent References Cited: | 7961446 June 2011 Ide et al. 2004/0120382 June 2004 Bennett et al. 2009/0262468 October 2009 Ide et al. 1567668 January 2005 101268596 September 2008 101431228 May 2009 1 933 439 June 2008 2006-304043 November 2006 2007032489 March 2007 |
| Other References: | Ide Yuzo, Temperature protection circuit, power supply device, and electronic apparatus; Publication date: Mar. 29, 2007; Abstract and detailed description. cited by examiner International Search Report from P.R. China in International Application No. PCT/CN2009/074701, mailed Feb. 11, 2010. cited by applicant Written Opinion of the International Search Authority related to International Application No. PCT/CN2009/074701, mailed Feb. 11, 2010, for Huawei Technologies Co., Ltd. cited by applicant First Office Action of Chinese Application 200810187225.7, mailed Jan. 29, 2010. cited by applicant Extended European Search Report dated (mailed) Feb. 10, 2012, issued in related Application No. 09832890.9-2210, PCT/CN2009074701, Hauwei Technologies Co., Ltd. cited by applicant |
| Primary Examiner: | Patel, Dharti |
| Attorney, Agent or Firm: | Conley Rose, P.C. Rodolph, Grant Beaulieu, Nicholas K. |
| رقم الانضمام: | edspgr.08699196 |
| قاعدة البيانات: | USPTO Patent Grants |
| الوصف غير متاح. |