CN1159635C - Method for reducing and controlling CPU-junction temp. - Google Patents
Method for reducing and controlling CPU-junction temp. Download PDFInfo
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- CN1159635C CN1159635C CNB001282395A CN00128239A CN1159635C CN 1159635 C CN1159635 C CN 1159635C CN B001282395 A CNB001282395 A CN B001282395A CN 00128239 A CN00128239 A CN 00128239A CN 1159635 C CN1159635 C CN 1159635C
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Abstract
The present invention relates to a temperature reducing control method for a CPU junction temperature, which comprises the following steps: endlessly detecting a CPU junction temperature; correspondingly regulating an air exhausting device in the inner part of a computer according to a temperature value of the junction temperature; reducing the operating frequency of the CPU in the condition of the junction temperature still exceeding a set safety value; raising the operating frequency of the CPU after reducing the temperature of the junction temperature. The present invention harmoniously utilizes each air exhausting device of a system, and reduces the junction temperature of the CPU in the condition of maximum possibly not influencing the operating performance of the CPU; each air exhausting device of the system is at maximum rated load; when the ultrahigh junction temperature of the CPU can still not be reduced, the junction temperature of the CPU can be reduced by reducing the operating frequency of the CPU; therefore, the present invention fundamentally solves an uncontrollable problem that the safety of a CPU is threatened because the junction temperature of the CPU is too high.
Description
Technical field
The present invention relates to a kind of control method of CPU junction temperature, especially a kind of control method in conjunction with air exhausting device adjusting and cpu frequency adjusting.
Background technology
Along with the develop rapidly of current microelectric technique, the performance of PC is more and more higher, and especially as " heart " of computing machine or the CPU of " brain ", its speed promotes significantly, makes the user obtain splendid performance.But because the dominant frequency of CPU constantly promotes, worker's consumption of CPU also increases significantly.When CPU frequency reaches 1GHz when above, the heat dissipation problem of CPU is very serious just.The long-time high-speed cruising of CPU, the fundamental element of its CPU silicon semiconductor one by one can produce a large amount of heats, cause the junction temperature temperature of CPU very high, and the CPU junction temperature is in long high temperature, sometimes CPU is burnt, the integral body that causes computing machine of burning of CPU is paralysed, and the loss that brings is often very heavy.Therefore the cooling of CPU is the problem that industry is made great efforts exploration always.Common way is the air draft ability that increases the area of heat radiator or strengthen radiator fan on CPU now, but these methods can not fundamentally guarantee the security of operation of CPU.Because the air draft ability of the area of heat radiator or increasing radiator fan is always specified, and because the design of computing machine total system can not be bigger with the volume increase of heat radiator or radiator fan, so the junction temperature control problem of CPU never has better solution.
Summary of the invention
The object of the present invention is to provide a kind of temperature of CPU junction temperature to reduce control method, it utilizes the inner pre-buried diode of CPU to measure the junction temperature temperature of CPU, reduce the junction temperature of CPU superelevation by different control methods, and the temperature that guarantees CPU can not surpass safe junction temperature value for a long time, fundamentally solve the cooling problem of CPU junction temperature superelevation, improve the safety in operation of CPU.
The object of the present invention is achieved like this:
A kind of temperature of CPU junction temperature reduces control method, it is characterized in that comprising the steps:
A, constantly detect the CPU junction temperature,
B, according to the temperature value of junction temperature, the air exhausting device of corresponding adjusting computer-internal;
If the c junction temperature still surpasses the safety value of setting, reduce the running frequency of CPU; Its concrete steps comprise:
1. adjust CPU operational use time Tw, set and adjust recurrence interval T;
2. it is superimposed to adjust the fixing reference clock of recurrence interval T and CPU;
3. even regulation is adjusted Tw and the T in the pulse;
4. obtain the CPU average running speed, just the cpu frequency regulated value;
D, after the temperature of junction temperature reduces, promote the running frequency of CPU.
The temperature of described CPU junction temperature reduces control method, and it is characterized in that: described air exhausting device comprises: cpu fan, system fan, power supply fan; The adjusting sequential steps of air exhausting device exhaust air rate is among the described step b:
A, at first regulate the fan exhaust amount of CPU;
B, after the fan of CPU arrives specified exhaust air rate, during safety value that junction temperature still surpass to be set, increase the system fan exhaust air rate.
The temperature of described CPU junction temperature reduces control method, it is characterized in that: also comprise behind the described step b: after the system fan exhaust air rate arrived specified exhaust air rate, junction temperature also surpassed the safe temperature value, increased the exhaust air rate of power supply fan again.
The temperature of described CPU junction temperature reduces control method, it is characterized in that: the adjusting control of each fan of described system adds among the BIOS of computing machine, and concrete steps are:
A, in BIOS, increase the threshold value option of corresponding junction temperature overtemperature difference;
B, BIOS constantly detect the CPU junction temperature according to the time interval of setting;
C, compare threshold;
D, regulate each electric fan respectively successively.
The temperature of described CPU junction temperature reduces control method, it is characterized in that: increase Schmidt's threshold range of corresponding uniform temperature numerical value on the described threshold value, to prevent the frequent start-stop of fan.
The temperature of described CPU junction temperature reduces control method, it is characterized in that: the overtemperature difference of described cpu frequency regulated value and CPU junction temperature is divided into more than one grade accordingly, when the overtemperature difference of CPU junction temperature reaches a certain numerical value, correspondence is adjusted to a certain frequency with CPU, and the cpu frequency that just certain temperature difference is corresponding certain is regulated.
The temperature of described CPU junction temperature reduces control method, and it is characterized in that: described CPU is in each frequency adjustment value and temperature difference shelves stable operation a period of time.
The temperature of described CPU junction temperature reduces control method, it is characterized in that: described CPU is after operation a period of time on a certain frequency shelves, and the CPU junction temperature does not still drop to below the permissible value, one grade of the Automatic Frequency of CPU downward modulation; When the junction temperature of CPU is reduced to a certain position, the Automatic Frequency of CPU rises one grade.
According to the technique scheme analysis as can be known, the present invention has utilized each air exhausting device of system in phase, under the prerequisite that does not influence the CPU runnability, reduces the junction temperature of CPU most possibly; Simultaneously, after each air exhausting device of system is in maximum rated load, when the junction temperature of CPU superelevation still can not reduce, reduce the junction temperature of CPU by the running frequency that reduces CPU, therefore method of the present invention has fundamentally solved when the CPU junction temperature too highly for a long time, threatens the safety of CPU and uncontrollable problem.
The present invention is described in further detail below in conjunction with accompanying drawing and specific embodiments.
Description of drawings
Fig. 1 is a process flow diagram of the present invention;
Fig. 2 is that system of the present invention air exhausting device is regulated process flow diagram;
Fig. 3 is that cpu frequency of the present invention is regulated process flow diagram;
Fig. 4 regulates the waveform synoptic diagram for cpu frequency of the present invention.
Embodiment
Referring to Fig. 1, the present invention is that a kind of temperature of CPU junction temperature reduces control method, and it at first constantly detects the CPU junction temperature; Then according to the temperature value of junction temperature, air exhausting devices such as the cpu fan of corresponding adjusting computer-internal, system fan, power supply fan; If junction temperature still surpasses the safety value of setting, can reduce the running frequency of CPU; After the temperature of junction temperature reduces, promote the running frequency of CPU.
For the adjusting sequential steps of each fan exhaust amount referring to Fig. 2, for:
1, at first regulates the fan exhaust amount of CPU;
2, after the fan of CPU arrives specified exhaust air rate, when junction temperature still surpasses the safety value of setting, increase the system fan exhaust air rate.
3, after the system fan exhaust air rate arrives specified exhaust air rate, junction temperature also surpasses the safe temperature value, increases the exhaust air rate of power supply fan again.
General cpu fan is total for often opening, and keeps full commentaries on classics.
During a kind of concrete enforcement of the adjusting of each fan of system control, can in the BIOS of computing machine, add control method.Concrete steps are:
The temperature that 1, can show the CPU junction temperature in BIOS, can set this temperature is that the temperature sensor actual measurement temperature that CPU imbeds in advance deducts 20 values of spending, and can be described as Tx.
2, increase the threshold value option of corresponding junction temperature overtemperature difference in BIOS, its scope can be 40 degree to 55 degree, or is superhigh temperature, this temperature Ts;
3, per 1 minute hand of BIOS detects a CPU junction temperature, calculates Tx;
4, compare Tx and Ts;
If 5 Tx＞=Ts open system fan, power supply fan respectively, make it full commentaries on classics;
If 6 Tx＜=Ts-3, then shutdown system fan, power supply fan enter the low ebb running status.
Wherein 3 degree are for executing the close threshold range of holding, to prevent the frequent start-stop of fan.When cpu temperature Ts-3 was between Ts, fan was kept former state.
According to dominant ideas of the present invention, shown in Fig. 3,4, realize the reduction of junction temperature by the running frequency of regulating CPU.Pulse reference time of CPU is by main parameter decision, in case determine can frequently not change.When modulating pulse T remains unchanged, but the operational use time Tw dynamic adjustments of CPU.Utilize both superimposed, obtain actual cpu clock.Actual being in a little while of CPU worked like this, and therefore the state of Xiu Xiing as long as the ratio of even regulation Tw and T has just obtained the CPU average running speed, reaches the purpose that cpu frequency is regulated in equivalence a little while.Cpu frequency is regulated concrete steps and is comprised:
1, adjusts CPU operational use time Tw, set and adjust recurrence interval T;
2, it is superimposed to adjust the fixing reference clock of recurrence interval T and CPU;
3, even regulation is adjusted Tw and the T in the pulse;
4, obtain the CPU average running speed, just the cpu frequency regulated value.
When finding that the CPU junction temperature surpasses threshold limit value, begin to reduce the CPU average frequency, till the CPU junction temperature is recovered normally.In the application, the overtemperature difference of cpu frequency regulated value and CPU junction temperature can be divided into accordingly more than one grade, when the overtemperature difference of CPU junction temperature reaches a certain numerical value, corresponding CPU is adjusted to a certain frequency, the cpu frequency that just certain temperature difference is corresponding certain is regulated.And CPU is in each frequency adjustment value and temperature difference shelves stable operation a period of time.When CPU after operation a period of time on a certain frequency shelves, the CPU junction temperature does not still drop to below the permissible value, one grade of the Automatic Frequency of CPU downward modulation increases underspeeding of CPU junction temperature; When the junction temperature of CPU is reduced to a certain value, the Automatic Frequency of CPU rises one grade; When the CPU junction temperature returned to safe temperature, it is normal that the frequency adjustment of CPU is also recovered.
Claims (8)
1, a kind of temperature of CPU junction temperature reduces control method, it is characterized in that comprising the steps:
A, constantly detect the CPU junction temperature,
B, according to the temperature value of junction temperature, the air exhausting device of corresponding adjusting computer-internal;
If the c junction temperature still surpasses the safety value of setting, can reduce the running frequency of CPU;
(1) adjusts CPU operational use time Tw, set and adjust recurrence interval T;
(2) it is superimposed to adjust the fixing reference clock of recurrence interval T and CPU;
(3) even regulation is adjusted Tw and the T in the pulse;
(4) obtain the CPU average running speed, just the cpu frequency regulated value.
D, after the temperature of junction temperature reduces, promote the running frequency of CPU.
2, the temperature of a kind of CPU junction temperature according to claim 1 reduces control method, and it is characterized in that: described air exhausting device can be cpu fan, system fan, power supply fan.
3, the temperature of a kind of CPU junction temperature according to claim 2 reduces control method, and it is characterized in that: the adjusting sequential steps of air exhausting device exhaust air rate is among the described step b:
A, at first regulate the fan exhaust amount of CPU;
B, after the fan of CPU arrives specified exhaust air rate, during safety value that junction temperature still surpass to be set, increase the system fan exhaust air rate.
4, the temperature according to claim 2 or 3 described a kind of CPU junction temperatures reduces control method, it is characterized in that: the adjusting control of each fan of described system can add among the BIOS of computing machine, and concrete steps are:
A, in BIOS, increase the threshold value option of corresponding junction temperature overtemperature difference;
B, BIOS constantly detect the CPU junction temperature according to the time interval of setting;
C, compare threshold;
D, regulate each electric fan respectively successively.
5, the temperature of a kind of CPU junction temperature according to claim 4 reduces control method, it is characterized in that: can increase Schmidt's threshold range of corresponding uniform temperature numerical value on the described threshold value, to prevent the frequent start-stop of fan.
6, the temperature of a kind of CPU junction temperature according to claim 1 reduces control method, it is characterized in that: the overtemperature difference of described cpu frequency regulated value and CPU junction temperature is divided into more than one grade accordingly, when the overtemperature difference of CPU junction temperature reaches a certain numerical value, correspondence is adjusted to a certain frequency with CPU, and the cpu frequency that just certain temperature difference is corresponding certain is regulated.
7, the temperature of a kind of CPU junction temperature according to claim 6 reduces control method, and it is characterized in that: described CPU is in each frequency adjustment value and temperature difference shelves stable operation a period of time.
8, the temperature of a kind of CPU junction temperature according to claim 7 reduces control method, it is characterized in that: described CPU is after operation a period of time on a certain frequency shelves, and the CPU junction temperature does not still drop to below the permissible value, one grade of the Automatic Frequency of CPU downward modulation; When the junction temperature of CPU is reduced to a certain value, the Automatic Frequency of CPU rises one grade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001282395A CN1159635C (en) | 2000-12-18 | 2000-12-18 | Method for reducing and controlling CPU-junction temp. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001282395A CN1159635C (en) | 2000-12-18 | 2000-12-18 | Method for reducing and controlling CPU-junction temp. |
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| CN1359043A CN1359043A (en) | 2002-07-17 |
| CN1159635C true CN1159635C (en) | 2004-07-28 |
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| CNB001282395A Expired - Lifetime CN1159635C (en) | 2000-12-18 | 2000-12-18 | Method for reducing and controlling CPU-junction temp. |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100394397C (en) * | 2005-09-22 | 2008-06-11 | 技嘉科技股份有限公司 | Apparatus for increasing processor efficiency under condition of meeting temperature request, and method thereof |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050030171A1 (en) * | 2003-08-06 | 2005-02-10 | Tse-Hung Liu | Cooling system for computing device |
| TWI324297B (en) | 2006-03-20 | 2010-05-01 | Via Tech Inc | Thermal throttling duty estimation methods and systems for a cpu |
| CN100410842C (en) * | 2006-05-19 | 2008-08-13 | 威盛电子股份有限公司 | Central processing unit temperature regulating method and system |
| CN100455096C (en) * | 2006-09-20 | 2009-01-21 | 北京北方烽火科技有限公司 | Dynamic clock control device and method for radiofrequency signal frequency scanner |
| CN104182016B (en) * | 2013-05-24 | 2018-08-31 | 联想(北京)有限公司 | A kind of temperature control method and electronic equipment |
| CN103473165B (en) * | 2013-09-26 | 2016-08-17 | 浪潮(北京)电子信息产业有限公司 | A kind of guard of computer method and device based on cpu load |
| CN103631361A (en) * | 2013-11-21 | 2014-03-12 | 杭州华三通信技术有限公司 | Method and equipment for improving system reliability |
| CN104238600B (en) * | 2014-09-28 | 2017-02-08 | 广州创维平面显示科技有限公司 | temperature control method and device |
| CN105116978A (en) * | 2015-08-17 | 2015-12-02 | 山东超越数控电子有限公司 | Temperature control method based on Loongson processor |
| CN105824377B (en) * | 2015-08-31 | 2019-10-15 | 维沃移动通信有限公司 | A kind of system temperature control method and mobile terminal |
| CN107102707B (en) * | 2017-04-19 | 2020-09-29 | 青岛海信移动通信技术股份有限公司 | Temperature control method and mobile terminal |
| CN107357385B (en) * | 2017-06-09 | 2020-04-28 | 努比亚技术有限公司 | Method for controlling temperature based on frequency, terminal and computer readable storage medium |
| CN107341089A (en) * | 2017-06-29 | 2017-11-10 | 联想(北京)有限公司 | Adjust the method and system of the cpu frequency of electronic equipment |
| CN109639683A (en) * | 2018-12-14 | 2019-04-16 | 浩云科技股份有限公司 | The method and device of processor working frequency is adjusted based on stream medium data |
| CN110687952A (en) * | 2019-10-24 | 2020-01-14 | 广东美的白色家电技术创新中心有限公司 | Voltage regulating circuit, voltage regulating method and storage medium |
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2000
- 2000-12-18 CN CNB001282395A patent/CN1159635C/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100394397C (en) * | 2005-09-22 | 2008-06-11 | 技嘉科技股份有限公司 | Apparatus for increasing processor efficiency under condition of meeting temperature request, and method thereof |
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| CN1359043A (en) | 2002-07-17 |
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