CN1145868C - Stepped frequency converter - Google Patents
Stepped frequency converter Download PDFInfo
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- CN1145868C CN1145868C CNB001047795A CN00104779A CN1145868C CN 1145868 C CN1145868 C CN 1145868C CN B001047795 A CNB001047795 A CN B001047795A CN 00104779 A CN00104779 A CN 00104779A CN 1145868 C CN1145868 C CN 1145868C
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Abstract
The present invention relates to a stepping frequency changing device. According to the temperature change of a system CPU and the peripheral temperature change, the working frequency of a system is regulated. The stepping frequency changing device comprises a temperature detecting element, a temperature comparing element and a frequency changing element, wherein the temperature detecting element is used for detecting the CPU temperature and the peripheral temperature; the temperature comparing element is used for determining the temperature range represented by the temperature detected by the temperature detecting element; the frequency changing element is used for regulating the working frequency of the system according to the frequency change proportion corresponding to the temperature range detected by the temperature comparing element. By the working frequency of the system, the system temperature is changed, and the system can be maintained in the optimal efficiency, and can operate at safe temperature.
Description
The present invention is about a kind of stepped frequency converter, particularly relevant for a kind of stepped frequency converter that can adjust the CPU frequency of operation with the reduction cpu temperature stage.
Present system designer, when handling the overheated problem of CPU, modal method is exactly to utilize to reduce the temperature that the system works frequency reduces system, and the method can effectively be improved the overheated problem of CPU.Because after the frequency of operation of CPU reduces, will reduce the usefulness of system, relatively, the load of CPU also can reduce, and therefore, can reach the purpose of cooling.
Yet general system designer is to take when system reaches default temperature, directly reduces the mode of CPU frequency of operation significantly, thus, causes the usefulness of system significantly to reduce easily, causes the inconvenience of operation.
Consult Fig. 1, at first system starts working, in step S1, and the safe temperature of initialization system work, this sentences safe temperature and is set at 80 degree for example.Now is at step S2, the temperature of detection system.Step S3 if temperature continue to raise, and detects system temperature and reaches 80 when spending, execution in step S4.Step S4 with system's frequency reducing to reach the purpose of cooling.If system temperature does not reach 80 when spending as yet, then get back to step S2, continue the detection system temperature.Though the method can effectively reduce the temperature of system, can produce many problems.Wherein Zui Da problem is: system can reach the highest temperature under fully loaded situation usually, if utilize this moment the mode that reduces frequency of operation to reach the purpose of cooling, clearly, can cause the usefulness of system significantly to reduce.Therefore, can't between system temperature and system effectiveness, obtain an equilibrium point.
In view of this; The present invention be directed to above-mentioned prior art and propose improvement; when cpu temperature reduces gradually; system is promptly at the reduction of cpu temperature and slightly improve the system works frequency; in temperature reaches the rational temperature scope; and can improve the usefulness of system thus: relatively; when cpu temperature raises gradually; system is promptly at the rising of temperature and slightly reduce the system works frequency; and reach the purpose of cooling; if in the time of can't reaching the purpose of cooling, just system power supply is closed, with protection CPU and system.Moreover this frequency of operation of utilizing the stage to adjust CPU constantly circulates with the processing mode that obtains the best effort environment and carries out, and so continues the result that adjusts, can allow system held in the usefulness of the best, and can operate under the temperature of safety.
The object of the present invention is to provide a kind of stepped frequency converter, in order to adjust a system works frequency according to the variation of system CPU and peripheral temperature, this stepped frequency converter comprises: a temperature detection device is used for surveying above-mentioned CPU and peripheral temperature; One temperature comparing element, with the temperature range that decides the temperature representative in a temperature range of presetting that detects by this temperature detection device, wherein this temperature range has a maximum temperature values and a minimum temperature value, and this maximum temperature values and this minimum temperature value between have continuous a plurality of temperature ranges; And a frequency converting element, this frequency converting element is used for coming the Adjustment System frequency of operation according to the corresponding frequency conversion ratio of being surveyed with the temperature comparing element of temperature range.
Another object of the present invention is to provide a kind of stepped conversion method, in order to adjust a system works frequency according to the CPU of a system and the variation of peripheral temperature, this stepped conversion method comprises the following steps: the detection system temperature, decision is by the temperature range of the temperature of being surveyed representative in a preset temperature interval, wherein this temperature range has a maximum temperature values and a minimum temperature value, and this maximum temperature values and this minimum temperature value between have continuous a plurality of temperature ranges; And basis and the corresponding frequency conversion ratio of the temperature range of representative Adjustment System frequency of operation.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and cooperate appended accompanying drawing, be described in detail below:
The accompanying drawing simple declaration
Fig. 1 is the workflow diagram of expression known techniques;
The calcspar of relation between each element among Fig. 2 expression the present invention; And
Fig. 3 is the workflow diagram of expression system of the present invention in steps such as C.T. and change frequency.
[symbol description]
102～temperature detection device, 101～CPU or periphery, 103～temperature comparing element, and 104～frequency converting element.
Embodiment
Consult Fig. 2, Fig. 2 is the calcspar of each element relation of expression the present invention.At first survey the temperature of CPU or periphery 101, and export measured temperature to temperature comparing element 103 by temperature detection device 102 (being generally thermistor or temperature-sensitive electric capacity).Temperature comparing element 103 can range measured temperature specific scope, and export this result to frequency converting element 104, wherein this temperature range is to be the upper limit with the safe temperature, is the inner a plurality of continuous scopes of temperature range that lower limit was constituted with the temperature that reaches the frequency conversion condition.Frequency converting element 104 then basis is adjusted the CPU frequency of operation with the corresponding set frequency conversion ratio of gained temperature range.
Consult Fig. 3, Fig. 3 is the process flow diagram of expression System Operation of the present invention.At first system begins operation, in step S30, and the safe temperature of initialization system work and frequency reducing temperature.This sentences, and safe temperature is set at 80 degree, the frequency reducing temperature is set at 70 degree and is example.Now is at step S31, the temperature of detection system.Step S32 studies and judges whether reach the condition that reduces the system works frequency, judges just whether system temperature reaches the frequency reducing temperature.If do not reach the condition that reduces the system works frequency, execution in step S41 then, system does not need to reduce the system works frequency, and gets back to step S32, continues to study and judge the condition that reduces the system works frequency that whether reaches.If reached the condition that reduces the system works frequency, then study and judge the scope at system present temperature place, and adjust the frequency of operation of CPU according to the pairing frequency reducing ratio of this scope.What this action was detailed is described below, and execution in step S33 judges whether system temperature spends between 72 degree 70.When system temperature when 70 degree are between 72 degree, execution in step S42, system's frequency reducing 25%, and get back to step S32 continues to study and judge the condition that reduces the system works frequency that whether reaches.If system temperature is not spent between 72 degree 70, then execution in step S34 judges whether system temperature spends between 74 degree 72.When system temperature when 72 degree are between 74 degree, execution in step S43, system's frequency reducing 37.5%, and get back to step S32 continues to study and judge the condition that reduces the system works frequency that whether reaches.If system temperature is when 72 degree are between 74 degree, then execution in step S35 judges whether system temperature spends between 76 degree 74.When system temperature when 74 degree are between 76 degree, execution in step S44, system's frequency reducing 50%, and get back to step S32 continues to study and judge the condition that reduces the system works frequency that whether reaches.If system temperature is when 74 degree are between 76 degree, then execution in step S36 judges whether system temperature spends between 78 degree 76.When system temperature when 76 degree are between 78 degree, execution in step S45, system's frequency reducing 62.5%, and get back to step S32 continues to study and judge the condition that reduces the system works frequency that whether reaches.If system temperature is when 76 degree are between 78 degree, then execution in step S37 judges whether system temperature spends between 80 degree 78.When system temperature when 78 degree are between 80 degree, execution in step S46, system's frequency reducing 75%, and get back to step S32 continues to study and judge the condition that reduces the system works frequency that whether reaches.If not, this moment, system temperature was higher than 80 degree, so execution in step S38, with system closing, was damaged to avoid system.
After the system works frequency reduced, because the reduction of task performance, the load that CPU is handled reduced, and this measure can reach the purpose of cooling.Particularly present embodiment is the repetitiousness operation of adopting recycle design, therefore the temperature when system reduces because reducing the cause of system works frequency, and then changed the scope at system temperature place, same, changed pairing frequency reducing ratio system's this moment, cause system's frequency reducing ratio minimizing of this moment, therefore can improve the usefulness of system.For example: if system's measured temperature this moment is 75 degree, because of the pairing frequency reducing ratio of this temperature is 50%, so system's frequency reducing 50%; And system makes system acting slow down because reduce after the frequency of operation, and this measure will alleviate the load of CPU, and cause decrease of temperature.Reduce to 73 when spending when temperature, the pairing frequency reducing ratio of this temperature is 37.5%, and system adjusts the ratio of frequency reducing; Make the usefulness of CPU increase, thereby improved the work efficiency of system owing to the minimizing of frequency reducing ratio this moment.
If the temperature of CPU continues to raise, for example temperature has reached 77 degree at this moment, though this moment, system's reduced frequency 62.5%, but temperature still continue to rise, and when temperature reaches 79 when spending, this moment, the frequency reducing ratio of system reached 75%, if in the time of still can't effectively reducing the temperature of system, grasped more than 80 degree when system temperature, this moment will powered-down, to guarantee security of system.
Though the present invention discloses as above with preferred embodiment; right its is not in order to restriction the present invention, anyly has the knack of this skill person, without departing from the spirit and scope of the present invention; change and retouching when doing, so protection scope of the present invention is as the criterion with the scope that appended claims defines.
Claims (12)
1. stepped frequency converter in order to adjust a system works frequency according to the CPU of system and the variation of peripheral temperature, is characterized in that this stepped frequency converter comprises:
One temperature detection device is used for surveying above-mentioned CPU and peripheral temperature;
One temperature comparing element, with the temperature range that decides the temperature representative in a preset temperature interval that detects by this temperature detection device, wherein this temperature range has a maximum temperature values and a minimum temperature value, and has continuous a plurality of temperature ranges between this maximum temperature values and this minimum temperature value; And
One frequency converting element, this frequency converting element are used for according to the corresponding frequency conversion ratio of the temperature range Adjustment System frequency of operation of being surveyed with the temperature comparing element.
2. stepped frequency converter as claimed in claim 1 is characterized in that, this temperature detection device is a thermistor.
3. stepped frequency converter as claimed in claim 1 is characterized in that, this temperature detection device is a temperature-sensitive electric capacity.
4. stepped frequency converter as claimed in claim 1 is characterized in that, the temperature of surveying when this temperature detection device is during greater than maximum temperature values, and this CPU is with system closing.
5. stepped frequency converter as claimed in claim 1 is characterized in that, the temperature of surveying when this temperature detection device is during less than this minimum temperature value, this not frequency conversion of system.
6. stepped frequency converter as claimed in claim 1 is characterized in that, this stepped frequency converter adopts the work of recycle design repetitiousness.
7. a stepped conversion method in order to adjust a system works frequency according to the CPU of a system and the variation of peripheral temperature, is characterized in that this stepped conversion method comprises the following steps:
The detection system temperature;
The temperature range of temperature representative in a preset temperature interval of being surveyed of decision, wherein this temperature range has a maximum temperature values and a minimum temperature value, and this maximum temperature values and this minimum temperature value between have continuous a plurality of temperature ranges; And
According to the corresponding frequency conversion ratio of the temperature range of representative Adjustment System frequency of operation.
8. stepped conversion method as claimed in claim 7 is characterized in that, utilizes thermistor detection system temperature.
9. stepped conversion method as claimed in claim 7 is characterized in that, utilizes temperature-sensitive electric capacity detection system temperature.
10. stepped conversion method as claimed in claim 7 is characterized in that, when system temperature during greater than this maximum temperature values, this CPU is with system closing.
11. stepped conversion method as claimed in claim 7 is characterized in that, when system temperature during less than this minimum temperature value, and this not frequency conversion of system.
12. stepped conversion method as claimed in claim 7 is characterized in that, the step of this stepped conversion method is the repetitiousness cycling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001047795A CN1145868C (en) | 2000-03-21 | 2000-03-21 | Stepped frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001047795A CN1145868C (en) | 2000-03-21 | 2000-03-21 | Stepped frequency converter |
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| Publication Number | Publication Date |
|---|---|
| CN1314627A CN1314627A (en) | 2001-09-26 |
| CN1145868C true CN1145868C (en) | 2004-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB001047795A Expired - Fee Related CN1145868C (en) | 2000-03-21 | 2000-03-21 | Stepped frequency converter |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102571155B (en) * | 2010-12-30 | 2016-04-20 | 芯讯通无线科技（上海）有限公司 | The method of frequency correcting apparatus, emending frequency, SRD communication system and bearing calibration |
| CN102609319A (en) * | 2011-01-20 | 2012-07-25 | 中国移动通信有限公司 | Frequency modulation method, device and equipment of processor |
| CN104122962A (en) * | 2013-04-27 | 2014-10-29 | 宏碁股份有限公司 | Temperature regulation device and method |
| CN106066813B (en) * | 2016-05-26 | 2020-03-13 | 努比亚技术有限公司 | Resource scheduling device, mobile terminal and resource scheduling method |
| CN106101442A (en) * | 2016-07-29 | 2016-11-09 | 维沃移动通信有限公司 | A kind of method adjusting mobile terminal temperature rise and mobile terminal |
| CN106598200A (en) * | 2016-12-08 | 2017-04-26 | 武汉斗鱼网络科技有限公司 | Temperature-based CPU dynamic frequency modulation apparatus and method |
| 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 |
| CN109240880A (en) * | 2018-08-27 | 2019-01-18 | 北京比特大陆科技有限公司 | A kind of digital cash digs control method, device and the relevant device of mine machine |
| CN110837456B (en) * | 2019-11-13 | 2021-12-24 | 联想(北京)有限公司 | Control method and device and electronic equipment |
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- 2000-03-21 CN CNB001047795A patent/CN1145868C/en not_active Expired - Fee Related
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| CN1314627A (en) | 2001-09-26 |
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