CN104214121A - Fan revolution control system and method - Google Patents
Fan revolution control system and method Download PDFInfo
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- CN104214121A CN104214121A CN201310211533.XA CN201310211533A CN104214121A CN 104214121 A CN104214121 A CN 104214121A CN 201310211533 A CN201310211533 A CN 201310211533A CN 104214121 A CN104214121 A CN 104214121A
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Abstract
The invention discloses a fan revolution control method. The method comprises the steps that the temperature values of the CPU of an electronic device are obtained at the preset time interval, the temperature values and the corresponding time when the temperature values are obtained are recorded, and a sampling slope is worked out according to the temperature values and the corresponding time; when the sampling slope is larger than the preset slope and the current temperature value of the CPU is larger than the preset threshold value, the revolution of a fan of the electronic device is adjusted to the preset revolution. The invention further provides a fan revolution control system. By means of the fan revolution control system and method, the CPU can be effectively cooled while energy can be saved.
Description
Technical field
The present invention relates to control system and the method for the fan in a kind of electronic equipment, relate in particular to a kind of fan revolution control system and method.
Background technique
Current CPU generally supports the farsighted frequency of Intel turbo boost(Intel to accelerate) technology, this technology can provide dynamic overclocking capabilities, even within the time limiting, can exceed the specified TDP(Thermal Design Power of system, heat dissipation design power consumption) running.Therefore, system necessarily requires to have more high efficiency heat dissipation design, with the damage of the unstable even CPU of system that avoids Yin Gaowen to cause.
The design of current fan cooling is all passive detecting temperature, then according to the rotating speed of different Temperature Setting fans.This method is too passive and when detecting temperature rising, raising rotation speed of the fan, arrives between cpu temperature decrement phase, and the required reaction time is long, cannot quick efficient reduction cpu temperature.Therefore, will cause CPU to be forced to leave turbo pattern, cannot, with its limiting frequency running, reduce the usefulness of total system.
Summary of the invention
In view of above content, be necessary to provide a kind of fan revolution control system and method, can reach the efficiently radiates heat of CPU and energy-conservation simultaneously.
A kind of fan control method of number of speeds, comprise: the temperature value that obtains the CPU of described electronic equipment according to a default time lag, and record this temperature value and the corresponding time of obtaining this temperature value, and go out a sampling slope according to described temperature value and corresponding Time Calculation; When above-mentioned sampling slope is greater than a default slope, and the current temperature value of described CPU is while being greater than a default threshold value, adjusts revolution to default revolution of the fan of electronic equipment.
A kind of fan revolution control system, comprise: sampling module, for obtain the temperature value of the CPU of described electronic equipment according to a default time lag, and record this temperature value and the corresponding time of obtaining this temperature value, and go out a sampling slope according to described temperature value and corresponding Time Calculation; And revolution adjusting module, for being greater than a default slope when above-mentioned sampling slope, and the current temperature value of described CPU is while being greater than a default threshold value, adjusts revolution to default revolution of the fan of electronic equipment.
Compared to prior art, fan revolution control system of the present invention and method utilize the method for timesharing sampling that the cpu temperature of different time is recorded and generates sampling slope, the trend rising according to this sampling slope judgement cpu temperature, to improve fast the rotating speed of fan or normally to adjust the rotating speed of fan, reach usefulness and energy-conservation optimum balance simultaneously.
Accompanying drawing explanation
Fig. 1 is the running environment schematic diagram of fan revolution control system of the present invention preferred embodiment.
Fig. 2 is the functional block diagram of fan revolution control system of the present invention preferred embodiment.
Fig. 3 is the method flow diagram of fan control method of number of speeds of the present invention preferred embodiment.
Primary component symbol description
| Electronic equipment | 1 |
| BMC | 10 |
| Fan revolution control system | 11 |
| CPU | 20 |
| MSR register | 21 |
| PCH | 30 |
| Fan | 40 |
| Mode decision module | 110 |
| Sampling module | 111 |
| Revolution adjusting module | 112 |
| Cycle criterion module | 113 |
Following embodiment further illustrates the present invention in connection with above-mentioned accompanying drawing.
Embodiment
Consulting shown in Fig. 1, is the running environment schematic diagram of fan revolution control system of the present invention preferred embodiment.Described fan revolution control system 11 runs in electronic equipment 1.Described electronic equipment 1 can be the data processing equipments such as computer, server.
Described electronic equipment 1 comprises BMC(Baseboard Management Controller, baseboard management controller) 10, CPU(CentralProcessingUnit, central processing unit (CPU)) 20, PCH(Platform Controller Hub, platform control unit) 30 and fan 40.At length, described fan revolution control system 11 runs in BMC10.
Described CPU20 comprises a MSR(Model Specific Register, special module register) 21.In this MSR21, store temperature value and the current mode of operation of CPU20 of CPU20.
Described PCH30 is a kind of integrated South Bridge chip, for obtain the temperature value of CPU20 and current mode of operation from described MSR21.
Described fan revolution control system 11 comprises the function module (see figure 2) that one or more is comprised of program-code, be used in the situation that the overclocking pattern that the current mode of operation of CPU20 is Turbo, the temperature value of the CPU20 obtaining from MSR21 according to a default time period according to PCH30, generate the sampling slope of temperature and time relation, the trend rising according to this sampling slope judgement CPU20 temperature, to control the revolution of described fan 40.
Consulting shown in Fig. 2, is the functional block diagram of fan revolution control system of the present invention preferred embodiment.Described fan revolution control system 11 comprises mode decision module 110, sampling module 111, revolution adjusting module 112 and cycle criterion module 113.
As mentioned above, above each module is all stored in electronic equipment 1 memory device (not shown) or solidifies in the operation system of electronic equipment 1 with the form of program-code or instruction, and by the processor of electronic equipment 1, as performed in CPU20.Below in conjunction with Fig. 3, each function module in fan revolution control system is elaborated.
Consulting shown in Fig. 3, is the method flow diagram of fan control method of number of speeds of the present invention preferred embodiment.Fan control method of number of speeds of the present invention is not limited to the step in flow chart shown in Fig. 3 and order.According to different embodiments, the step shown in Fig. 3 in flow chart can increase, remove or change order.
Step S10, the current mode of operation of the CPU20 that mode decision module 110 is obtained from the MSR21 of CPU20 according to PCH30 judges whether the current mode of operation of CPU20 is Turbo pattern.If current mode of operation is not Turbo pattern, process ends.Otherwise, if current mode of operation is Turbo pattern, carry out following step S11.
Step S11, sampling module 111 is controlled PCH30 and from the MSR21 of CPU20, is obtained the temperature value of CPU20 according to a default time lag, and records this temperature value and the corresponding time of obtaining this temperature value.The described temperature value obtaining and time can be recorded in the memory device of electronic equipment 1.The described default time can feed, for example 2 seconds.
Step S12, sampling module 111 goes out a sampling slope according to the above-mentioned temperature value obtaining and corresponding Time Calculation.In the present embodiment, the temperature value that described sampling module 111 obtains different time fits to a curve, and this slope of a curve is described sampling slope.
Step S13, revolution adjusting module 112 judges whether above-mentioned sampling slope is greater than a default slope.Described default slope can be, for example 0.8.When above-mentioned sampling slope is greater than described default slope, carry out following step S14.Otherwise, if above-mentioned sampling slope is not more than described default slope, carry out following step S16.
Step S14, revolution adjusting module 112 further judges whether the current temperature value of CPU20 is greater than a default threshold value.Described threshold value can be that CPU20 critical temperature value deducts a side-play amount and obtains.When the current temperature value of CPU20 is greater than described default threshold value, carry out following step S15.Otherwise, when the current temperature value of CPU20 is not more than described default threshold value, carry out following step S16.
Step S15, revolution adjusting module 112 is adjusted revolution to default revolution of fan 40, and in the present embodiment, described default revolution is the maximum number of revolutions of fan 40.
Step S16, the revolution that revolution adjusting module 112 is adjusted fan 40 is to revolution corresponding to current temperature value.In the present embodiment, in the memory device of electronic equipment 1, can store a list, for recording the revolution of the fan 40 that temperature value that CPU20 is different is corresponding.
Step S17, whether 113 judgements of cycle criterion module finish the monitoring of CPU20 temperature.In the present embodiment, when CPU20 has jumped out Turbo pattern or CPU20 quits work, 113 judgements of cycle criterion module finish the monitoring of CPU20 temperature, and process ends.Otherwise, if CPU20 is still in Turbo pattern, return to above-mentioned step S11.
Finally it should be noted that, above embodiment is only unrestricted in order to technological scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technological scheme of the present invention, and not depart from the spirit and scope of technical solution of the present invention.
Claims (10)
1. a fan control method of number of speeds, runs in electronic equipment, it is characterized in that, the method comprises:
Sampling procedure, obtains the temperature value of the CPU of described electronic equipment according to a default time lag, and records this temperature value and the corresponding time of obtaining this temperature value, and goes out a sampling slope according to described temperature value and corresponding Time Calculation; And
Revolution set-up procedure, when above-mentioned sampling slope is greater than a default slope, and the current temperature value of described CPU is while being greater than a default threshold value, adjusts revolution to default revolution of the fan of electronic equipment.
2. fan control method of number of speeds as claimed in claim 1, is characterized in that, described revolution set-up procedure also comprises:
When above-mentioned sampling slope is not more than described default slope, or the current temperature value of described CPU is while being not more than described default threshold value, adjusts the revolution of described fan to revolution corresponding to current temperature value.
3. fan control method of number of speeds as claimed in claim 2, is characterized in that, the method also comprises:
Mode decision step, for the mode of operation that judges that described CPU is current, and when current mode of operation is Turbo pattern, carries out described sampling procedure and described revolution set-up procedure.
4. fan control method of number of speeds as claimed in claim 1, is characterized in that, described default threshold value is by described CPU critical temperature value, to deduct a side-play amount to obtain.
5. fan control method of number of speeds as claimed in claim 1, is characterized in that, described default revolution is the maximum number of revolutions of described fan.
6. a fan revolution control system, runs in electronic equipment, it is characterized in that, this system comprises:
Sampling module, for obtaining the temperature value of the CPU of described electronic equipment according to a default time lag, and records this temperature value and the corresponding time of obtaining this temperature value, and goes out a sampling slope according to described temperature value and corresponding Time Calculation; And
Revolution adjusting module, for being greater than a default slope when above-mentioned sampling slope, and the current temperature value of described CPU is while being greater than a default threshold value, adjusts revolution to default revolution of the fan of electronic equipment.
7. fan revolution control system as claimed in claim 6, is characterized in that, described revolution adjusting module also for:
When above-mentioned sampling slope is not more than described default slope, or the current temperature value of described CPU is while being not more than described default threshold value, adjusts the revolution of described fan to revolution corresponding to current temperature value.
8. fan revolution control system as claimed in claim 7, is characterized in that, this system also comprises:
Mode decision module, for judging whether the current mode of operation of described CPU is Turbo pattern.
9. fan revolution control system as claimed in claim 6, is characterized in that, described default threshold value is by described CPU critical temperature value, to deduct a side-play amount to obtain.
10. fan revolution control system as claimed in claim 6, is characterized in that, described default revolution is the maximum number of revolutions of described fan.
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| CN201310211533.XA CN104214121A (en) | 2013-05-31 | 2013-05-31 | Fan revolution control system and method |
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| CN201310211533.XA CN104214121A (en) | 2013-05-31 | 2013-05-31 | Fan revolution control system and method |
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| CN106774510A (en) * | 2016-12-30 | 2017-05-31 | 安徽育安实验室装备有限公司 | A kind of use for laboratory intelligent ventilating cabinet control system |
| CN107168895A (en) * | 2016-03-07 | 2017-09-15 | 龙芯中科技术有限公司 | Control method, bridge piece and the system of external equipment |
| CN107864597A (en) * | 2017-11-30 | 2018-03-30 | 紫光华山信息技术有限公司 | Fan speed-governing method, device and electronic equipment |
| CN108598524A (en) * | 2018-05-08 | 2018-09-28 | 东莞众创新能源科技有限公司 | Fuel battery cooling system and its temprature control method |
| CN109271304A (en) * | 2018-09-12 | 2019-01-25 | 合肥联宝信息技术有限公司 | Health detecting method and system, the electronic equipment of cooling system |
| CN110502046A (en) * | 2019-08-06 | 2019-11-26 | 中影巴可（北京）电子有限公司 | The temprature control method and device of light engine DMD |
| WO2021031971A1 (en) * | 2019-08-22 | 2021-02-25 | 三维通信股份有限公司 | Method and device for controlling flow rate of fan, computer apparatus, and readable storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107168895A (en) * | 2016-03-07 | 2017-09-15 | 龙芯中科技术有限公司 | Control method, bridge piece and the system of external equipment |
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| CN108598524A (en) * | 2018-05-08 | 2018-09-28 | 东莞众创新能源科技有限公司 | Fuel battery cooling system and its temprature control method |
| CN108598524B (en) * | 2018-05-08 | 2021-03-02 | 东莞众创新能源科技有限公司 | Fuel cell cooling system and temperature control method thereof |
| CN109271304A (en) * | 2018-09-12 | 2019-01-25 | 合肥联宝信息技术有限公司 | Health detecting method and system, the electronic equipment of cooling system |
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| WO2021031971A1 (en) * | 2019-08-22 | 2021-02-25 | 三维通信股份有限公司 | Method and device for controlling flow rate of fan, computer apparatus, and readable storage medium |
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Application publication date: 20141217 |