CN100474212C - Method for controlling fan speed in electronic system and system using the same - Google Patents

Method for controlling fan speed in electronic system and system using the same Download PDF

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CN100474212C
CN100474212C CNB2006100723186A CN200610072318A CN100474212C CN 100474212 C CN100474212 C CN 100474212C CN B2006100723186 A CNB2006100723186 A CN B2006100723186A CN 200610072318 A CN200610072318 A CN 200610072318A CN 100474212 C CN100474212 C CN 100474212C
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fan
cpu
electronic system
fan speed
temperature
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CN101055476A (en
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吕明祐
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Lite On Technology Corp
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Lite On Technology Corp
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Abstract

The invention provides a method for controlling the rotating speed of a fan in an electronic system and a system applying the method, wherein the electronic system comprises a CPU and a heat radiation module consisting of a heat radiation fan and a heat radiation fin, and the method comprises the following steps: the core voltage of the CPU is measured to obtain the power of the CPU, a first fan speed to be corrected is obtained according to the power of the CPU, and the first fan speed to be corrected is corrected according to the characteristic data of the electronic system. The invention takes the power generated by the CPU in operation as the main basis for adjusting the rotating speed of the fan, so the rotating speed of the fan can be adjusted in real time according to the execution condition of the CPU. The invention can correct the rotation speed of the heat radiation fan according to the characteristics of the system, and can maintain the lowest and optimal fan rotation speed control of the basic heat radiation requirement of the CPU even if the CPU is matched with different heat radiation modules and operates at different environmental temperatures.

Description

The method of rotation speed of the fan and the system of adopting said method in the control electronic system
Technical field
The invention relates to the heat dissipating method of electronic system, and the system that is particularly to control the method for radiator fan in the electronic system and uses this method.
Background technology
Fig. 1 is the Organization Chart that shows a traditional computer electronic system.Electronic system 100 is to comprise a CPU 10, a heat radiator 12, and a radiator fan 14.Cause temperature to rise owing to CPU 10 can produce heat energy when operating, cross cause thermal damage for avoiding CPU 10, heat radiator 12 and scattering fan 14 are to constitute a heat radiation module, remove in order to assist the diffusing of heat energy.This electronic system does not comprise the rotating speed that any fan control device is controlled radiator fan 14, no matter promptly CPU 10 execution speed at that time why, radiator fan all turns round with same rotational speed.Yet in order to have the speed of execution condition with higher in response to CPU 10, the rotating speed of radiator fan 14 often is designed into enough height, thereby exceeds the required substantially radiating requirements of CPU, and the result causes the problem that unnecessary electric power expends and noise is excessive.
Fig. 2 is the Organization Chart that shows another conditional electronic system.The difference of the electronic system 100 of electronic system 200 itself and Fig. 1 is to increase a fan control and arrangement for detecting 16, and wherein fan control and arrangement for detecting 16 are to be subjected to a BIOS 18 controls.BIOS 18 is the formula that store the corresponding rotation speed of the fan of cpu temperature.When CPU 10 in when running, fan control and arrangement for detecting 16 detect the temperature T of CPU 10 CPUAnd transmission cpu temperature data D TCPUTo BIOS 18.BIOS 18 contrasts its stored formula then, output fan speed data D FANTo fan control and arrangement for detecting 16.Afterwards, fan control and arrangement for detecting 16 are again according to acceptance fan speed data D FANExport rotation speed of the fan control signal S FAN, with the rotating speed of control radiator fan 14.
Yet in fact the formula of the corresponding rotation speed of the fan of cpu temperature but has its where the shoe pinches in design BIOS 18.The setting of rotation speed of the fan also need be considered the radiating efficiency of heat radiation module (heat radiator and radiator fan) except need are considered cpu temperature, and the factor relevant with the electronic system self character such as environment temperature.The radiating efficiency of the module of CPU heat radiation at present is with label and model sizable difference to be arranged.When shipment was system, manufacturer can be to the formula of system measurements with the corresponding rotation speed of the fan of design cpu temperature before shipment.Yet when shipment was motherboard, the heat radiation module kind that this motherboard will be arranged in pairs or groups can't be predicted by manufacturer, and the environment temperature that is operated, thereby can't design the minimum rotation speed of the fan formula of keeping the basic radiating requirements of CPU.In addition, owing to after fan control and arrangement for detecting 16 be first detecting temperature of CPU, begin rotation speed of the fan is adjusted, thereby can't grasp the temperature change situation of CPU immediately.
In view of this, cpu temperature is considered in a decapacitation, can also consider such as system performances such as the radiating efficiency of heat radiation module and environmental factors, and can grasp the CPU implementation status immediately, and adjust the electronic system of radiating fan rotation speed, and be that those skilled in the art yearn for.
Summary of the invention
The present invention discloses a kind of method of controlling rotation speed of the fan in the electronic system, it is used as adjusting the main foundation of rotation speed of the fan with cpu power, and according to the characteristic of system, analogy is that the radiating efficiency of heat radiation module and the environment temperature in the electronic system are revised, thereby can reach instant and best adjustment to rotation speed of the fan.The present invention more discloses a kind of electronic system of using the method.
The present invention provides a kind of method of controlling rotation speed of the fan in the electronic system, wherein this electronic system comprises the heat radiation module that a CPU and is made up of radiator fan and heat radiator, this method comprises: the core voltage that measures this CPU is to obtain the power of this CPU, obtaining one first according to the power of this CPU waits to revise rotation speed of the fan and revises this first rotation speed of the fan to be revised according to the performance data of this electronic system, when wherein this first rotation speed of the fan to be revised is a standard C PU at collocation one standard heat radiation module and in a standard ambient temperature, this standard C PU is the pairing rotation speed of the fan of both having established under this power, and wherein this standard C PU and this CPU are identical type.
The method of rotation speed of the fan in the control electronic system of the present invention, the core voltage that wherein measures this CPU is the core voltage that measures this CPU with the step of the power that obtains this CPU, and the magnitude of voltage that measured is obtained the power of this CPU with reference to the load curve of this CPU.
The method of rotation speed of the fan in the control electronic system of the present invention, wherein this performance data comprises the heat dissipation parameter of this heat radiation module.
The method of rotation speed of the fan in the control electronic system of the present invention, wherein this performance data more comprises the environment temperature in this electronic system.
The method of rotation speed of the fan in the control electronic system of the present invention, wherein this performance data comprises the heat dissipation parameter of this electronic system and the environment temperature in this electronic system.
The method of rotation speed of the fan in the control electronic system of the present invention, wherein revising this rotation speed of the fan according to this performance data comprises: revising this first rotation speed of the fan to be revised according to this heat dissipation parameter becomes one second rotation speed of the fan to be revised, and revises this second rotation speed of the fan to be revised according to this environment temperature; Or revise this first rotation speed of the fan to be revised according to this environment temperature and become one second rotation speed of the fan to be revised, and revise this second rotation speed of the fan to be revised according to this heat dissipation parameter.
The method of rotation speed of the fan in the control electronic system of the present invention, wherein this heat dissipation parameter is to equal this standard C PU as this CPU when this standard of collocation is dispelled the heat orthogonalization temperature parameter that module had in the orthogonalization temperature parameter that had of this heat radiation module of collocation, the dispel the heat ratio of radiating fan rotation speed in module of this heat radiation module and this standard, wherein this orthogonalization temperature be cpu temperature through an orthogonalization process to remove the parameter that forms with cpu power and environment temperature correlativity.
The method of rotation speed of the fan in the control electronic system of the present invention, wherein this orthogonalization temperature parameter is (T CPU-T ENV)/T CPUT, T wherein CPUBe cpu temperature, T ENVBe environment temperature, T CPUTBe that the CPU heat that this CPU has rises the pairing CPU theoretical temperatures of cpu power in the curve equation.
The method of rotation speed of the fan in the control electronic system of the present invention, wherein revising this first rotation speed of the fan to be revised according to this heat dissipation parameter, to become this second step of waiting to revise rotation speed of the fan be this first rotation speed of the fan to be revised to be multiplied by this heat dissipation parameter form this second rotation speed of the fan to be revised, and wherein can parameter to revise this second step of waiting to revise rotation speed of the fan according to this radiating efficiency be that this second rotation speed of the fan to be revised is multiplied by this heat dissipation parameter.
The method of rotation speed of the fan in the control electronic system of the present invention is wherein revised this first or second step of waiting to revise rotation speed of the fan according to this environment temperature and is comprised according to the difference between this environment temperature and this standard ambient temperature and revise this first or second rotation speed of the fan to be revised.
The method of rotation speed of the fan in the control electronic system of the present invention, wherein revise this according to the difference between this environment temperature and this standard ambient temperature and first or second wait that the step of revising rotation speed of the fan comprises: determine which in the middle of a plurality of temperature difference interval be difference between this environment temperature and this standard ambient temperature fall into, wherein each this temperature difference interval is a corresponding rotation speed of the fan residual quantity; And this first or second rotation speed of the fan to be revised increased the interval pairing rotation speed of the fan residual quantity of this temperature difference.
The present invention provides a kind of electronic system, comprise a CPU, one heat radiation module, it comprises a heat radiator and radiator fan, detecting of one fan and control device, be coupled to this CPU and this radiator fan, export a voltage data in order to the core voltage of detecting this CPU, and according to a final fan speed data to control the rotating speed of this radiator fan, one storage device, it is the stocking system performance data, and one calculate module, be coupled to this fan detecting and control device, in order to produce the power data of this CPU according to this voltage data, then produce one first fan speed data to be revised according to this power data, and revise this according to these system performance data and first wait to revise fan speed data and become this final fan speed data, wherein, this storage device more stores standard C PU power-rotation speed of the fan formula data and a standard ambient temperature, wherein this standard C PU power-rotation speed of the fan formula data be one with the congener standard C PU of this CPU symbolic animal of the birth year at collocation one standard heat radiation module and in this standard ambient temperature following time, the pairing rotation speed of the fan formula data of both having established of this standard C PU different capacity; And wherein this calculating module is that power data and this standard C PU power-rotation speed of the fan formula data according to this CPU produce this first fan speed data to be revised.
Electronic system of the present invention, wherein this calculating module is that BIOS cooperates existing computer system environment control device to form, or is combined by general conventional logic elements, or cooperates the traditional logic circuit component to combine by the single-chip microcomputer.
Electronic system of the present invention, wherein these system performance data comprise the heat dissipation parameter of this heat radiation module.
Electronic system of the present invention, wherein these system performance data more comprise the environment temperature in this electronic system.
Electronic system of the present invention, wherein this storage device more stores cpu load formula data, and this calculating module is the power data that obtains this CPU according to this CPU voltage data and this cpu load formula data.
Electronic system of the present invention, wherein these system performance data comprise the heat dissipation parameter of this heat radiation module and the environment temperature in this electronic system.
Electronic system of the present invention, wherein this calculating module is to revise this first rotation speed of the fan to be revised according to this heat dissipation parameter to become one second rotation speed of the fan to be revised, and revises this second rotation speed of the fan to be revised according to this environment temperature; Or revise this first rotation speed of the fan to be revised according to this environment temperature and become one second rotation speed of the fan to be revised, and revise this second rotation speed of the fan to be revised according to this heat dissipation parameter.
Electronic system of the present invention, wherein this heat dissipation parameter is to dispel the heat orthogonalization temperature parameter that module had in the orthogonalization temperature parameter that had of this heat radiation module of collocation and this standard C PU in this standard of arranging in pairs or groups when equating as this CPU, the dispel the heat ratio of radiating fan rotation speed in module of this heat radiation module and this standard, wherein this orthogonalization temperature be cpu temperature through an orthogonalization process to remove the parameter that forms with cpu power and environment temperature correlativity.
Electronic system of the present invention, wherein this electronic system more comprises an ambient temperature sensing device, in order to detect the environment temperature in this electronic system; Wherein this fan control and detecting module is in order to detect this cpu temperature; Wherein this calculating module is to obtain orthogonalization temperature parameter and this set power pairing radiating fan rotation speed of this standard electronic system under this standard ambient temperature and a set power; And wherein this calculating module is to carry out following steps and produce this radiating efficiency parameter: (1) output one initial fan data is to this fan control and arrangement for detecting; (2) according to this cpu temperature that is received by fan control and arrangement for detecting, this cpu power, and calculate its orthogonalization temperature parameter by the environment temperature that this ambient temperature sensing device received; (3) relatively the difference of the orthogonalization temperature parameter of this electronic system and this standard electronic system whether less than a set error; (4) when the difference of pairwise orthogonal temperature parameter during, adjust this fan speed data and export this fan control and arrangement for detecting to, and return step (2) greater than this set error; And when the difference of pairwise orthogonal temperature parameter during less than this set error, the ratio value that stores this electronic system and this standard electronic system either fan rotating speed is this radiating efficiency parameter.
Electronic system of the present invention, wherein this calculating module is according to the set cpu power that is stored in this storage device, this standard C PU in this set cpu power, this had both established the temperature under rotation speed of the fan and this standard ambient temperature, and this standard ambient temperature, calculated and obtain the orthogonalization temperature parameter of this standard electronic system, or wherein this storage device is to store the orthogonalization temperature parameter of this standard electronic system and this calculating module is an orthogonalization temperature parameter of being obtained this this standard electronic system by this storage device.
Electronic system of the present invention, wherein this orthogonalization temperature parameter is (T CPU-T ENV)/T CPUT, T wherein CPUBe cpu temperature, T ENVBe environment temperature, T CPUTBe that the CPU heat that this CPU has rises the pairing CPU theoretical temperatures of cpu power in the curve equation.
Electronic system of the present invention, wherein this calculating module is revised this first rotation speed of the fan to be revised according to this heat dissipation parameter to become one second process of waiting to revise rotation speed of the fan is this first rotation speed of the fan to be revised to be multiplied by this heat dissipation parameter form this second rotation speed of the fan to be revised, and wherein this calculating module to revise this second process of waiting to revise rotation speed of the fan according to this heat dissipation parameter be that this second rotation speed of the fan to be revised is multiplied by this heat dissipation parameter.
Electronic system of the present invention, wherein this calculating module is to revise this according to the difference between this ambient temperature data and this standard ambient temperature second to wait to revise fan speed data and produce this final fan speed data or revise this first fan speed data to be revised and become this second fan speed data to be revised.
Electronic system of the present invention, wherein this storage device more stores a plurality of temperature difference interval values and a plurality of rotation speed of the fan residual quantity corresponding to each temperature difference interval; Wherein this calculating module is revised this according to the difference between this ambient temperature data and this standard ambient temperature second to wait to revise process that fan speed data produces this final fan speed data is which in the middle of this a plurality of temperature difference interval be the difference of determining this environment temperature and this standard ambient temperature fall into, and this second rotation speed of the fan to be revised is increased this temperature difference pairing rotation speed of the fan residual quantity in interval and produces this final fan speed data; And wherein this calculating module is revised this first fan speed data to be revised according to the difference between this ambient temperature data and this standard ambient temperature to become this second process of waiting to revise fan speed data be that the difference of determining this environment temperature and this standard ambient temperature falls into that in the middle of this a plurality of temperature difference interval, and this first rotation speed of the fan to be revised is increased this temperature difference pairing rotation speed of the fan residual quantity in interval and becomes this second fan speed data to be revised.
One embodiment of the invention are the arrangement for detecting that increase cpu temperature and environment temperature, and calculate module by this, according to utilizing cpu power, cpu temperature, and environment temperature, and the radiating efficiency that calculates the heat radiation module is with as this system performance data and draw first rotation speed of the fan to be revised, and this first is waited to revise rotation speed of the fan and draw a final rotation speed of the fan to utilize this environment temperature correction.
The power that the present invention the time is produced in running with CPU is as the main foundation of adjusting rotation speed of the fan, so rotation speed of the fan can be done instant adjustment to the implementation status of CPU.The present invention has the ability to revise the rotating speed of radiator fan according to the characteristic of system, even the different heat radiation module of CPU collocation and operate on different environment temperatures still can be kept the minimum and best rotation speed of the fan control of the basic radiating requirements of CPU.
Description of drawings
Fig. 1 is the Organization Chart of a traditional computer electronic system;
Fig. 2 is the Organization Chart of another traditional computer electronic system;
Fig. 3 is an embodiment of the Organization Chart of electronic system provided by the present invention;
Fig. 4 shows to calculate module according to voltage data and system performance data D CHProduce the process flow diagram of final rotation speed of the fan control data;
Fig. 5 is the example that shows a cpu load curve;
Fig. 6 shows that calculating module revises the process flow diagram that this first fan speed data to be revised becomes this final fan speed data according to the system performance data;
Fig. 7 is to be that radiating efficiency parameter and environment temperature are example with the system performance data, shows the embodiment of an electronic system;
Fig. 8 is the process flow diagram embodiment that the calculating module of displayed map 7 calculates the radiating efficiency parameter;
Fig. 9 shows that CPU heat rises the example figure of curve.
Embodiment
For features, objects and advantages of the invention are become apparent, preferred embodiment cited below particularly, and cooperate appended diagram, be described in detail below.
Fig. 3 is an embodiment of the Organization Chart of electronic system provided by the present invention.Electronic system 300 is to comprise a CPU 10, one heat radiator 12 and radiator fan 14, both constitute a heat radiation module to assist the heat radiation of CPU 10, one fan control and arrangement for detecting 32 are coupled to CPU 10 and radiator fan 14, one calculates module 34 is coupled to this fan control and arrangement for detecting 32, and a storage device 36, it is in order to stocking system performance data D CHSystem performance data D CH, for example, be the radiating efficiency parameter of heat radiation module, and the environment temperature in the electronic system.This calculates module 34, for example, can be BIOS and cooperates existing computer system environment control device to form or combined by general conventional logic elements, or cooperate the traditional logic circuit component to combine by the single-chip microcomputer.This storage device 36 can combine with calculating module 34, or becomes another device independently of one another with calculating module 34, perhaps quantity can be more than one, for example, comprise and calculate module first storage device independently mutually, and second storage device that combines with calculating module 34.Below and will illustrate, the system performance data that storage device 36 is stored, can get by several systems characteristic detecting device (not being shown among Fig. 3) detecting (as environment temperature), or, get via calculating module 34 calculating again (as the radiating efficiency parameter) by system performance device output institute detecting data.
Fan control and arrangement for detecting 32 are core voltage V of detecting CPU 10 CPUAnd export a voltage data D VCPUCalculate module 34 to this.Calculate module 34 then according to this voltage data D VCPUAnd the stored system performance data D of storage device 36 CH, and produce a final rotation speed of the fan control data D FANTo fan detecting and control device 32.Fan detecting and control device 32 are then according to this final rotation speed of the fan control data D FANProduce a rotation speed of the fan control signal S FANTo this radiator fan 14 so that radiator fan 14 is carried out the control of rotating speed.
Fig. 4 shows to calculate module 34 according to voltage data D VCPUAnd system performance data D CHProduce final rotation speed of the fan control data D FANProcess flow diagram.Calculating module is according to this voltage data D in step 410 VCPUProduce the power data of this CPU, produce one first fan speed data to be revised in step 420 according to this power data then, and at last in step 430 according to system performance data D CHRevising this first waits to revise fan speed data and becomes this final fan speed data D FAN
In step 410, calculating module 34 is according to voltage data D VCPUAnd produce the power data of this CPU.Because CPU is when consuming different capacity, its core voltage can produce corresponding voltage drop, therefore calculates the voltage data D of module 34 according to CPU VCPUObtain the method for power data, for example, can be by load curve with reference to a CPU.The load curve of CPU provides the pairing core current information of core cpu voltage, thereby can provide core cpu voltage pairing power data.
Fig. 5 is the example that shows a cpu load curve, its cathetus V TYPICALThe typical case who is CPU operates curve, and actual load curve is then between straight line V MAXAnd V MINBetween.In an embodiment, be to use straight line V TYPICALObtain the power of CPU.In present embodiment, the load curve data of CPU are to be stored in the storage device 36, and in calculating module 34 according to voltage data D VCPUBefore obtaining the cpu power data, provide to calculating module 34.
In step 420, calculating module 34 produces one first according to this power data then and waits to revise fan speed data D FAN1, the heat dissipation with module (to be measured) that obtain dispelling the heat just obtains the core cpu temperature in step 410, controls the rotation speed of the fan speed again, and then the heat dissipation of the module that obtains dispelling the heat.Wherein first wait to revise fan speed data D FAN1Be to obtain according to a standard C PU power-rotation speed of the fan formula data.This standard C PU power-rotation speed of the fan formula data are in a standard electronic system, one with the congener standard C PU of this CPU symbolic animal of the birth year, at collocation one standard heat radiation module and under a standard ambient temperature, the pairing rotation speed of the fan formula data of both having established of different capacity.This had both been established on the rotation speed of the fan typical case, be make radiator fan in this standard heat radiation module can the prerequisite that CPU does not burn with minimum rotation speed of the fan under designed obtaining, and can be sectional type or stepless control.This calculating module 34 is with reference to this standard C PU power-rotation speed of the fan formula data, and the pairing fan speed data of this power data is waited to revise fan speed data D as first FAN1In this example, this standard C PU power-rotation speed of the fan formula data are to be stored in the storage device 36.
In step 430, calculate module 34 and revise this according to the system performance data and first wait to revise fan speed data D FAN1Become this final fan speed data D FANFig. 6 comprises the first system performance data D with this system data CH1And the second performance data D CH2Be example, show calculate module 34 and revise this according to the system performance data and first wait to revise fan speed data D FAN1Become this final fan speed data D FANProcess flow diagram.Can be earlier according to the first system performance data D CH1Revise this and first wait to revise fan speed data D FAN1Become one second and wait to revise fan speed data D FAN2, shown in step 4310, then according to the second system performance data D CH2Revise this and second wait to revise fan speed data D FAN2Become final fan speed data D FAN, shown in step 4320.
Fig. 7 is to be that radiating efficiency parameter and environment temperature are example with the system performance data, shows the embodiment of an electronic system.Electronic system 700 among the figure is to increase an ambient temperature sensing device 710 with the difference of the electronic system 300 of Fig. 3, and in order to the environment temperature in the detecting electronic system, and fan control and arrangement for detecting more increase detecting temperature of CPU T CPUFunction.Wherein ambient temperature sensing device 710, are arranged on preferable around the heat radiation module.
At a given time, this ambient temperature sensing device is the environment temperature T in the detecting electronic system 700 ENVAnd provide ambient temperature data D TENVTo calculating module 34, and this fan control and arrangement for detecting are detecting temperature of CPU T CPUAnd provide cpu temperature data D TCPUTo calculating module 34, for calculating the usefulness that module 34 calculates the radiating efficiency parameter.Calculate module 34 after calculating the radiating efficiency parameter, then export storage device 36 to, with in after can read out and revise first fan speed data to be revised.
Fig. 8 be the calculating module 34 of displayed map 7 behind this given time reception environment temperature and cpu temperature, it calculates a process flow diagram embodiment of radiating efficiency parameter.Present embodiment is that electronic system 700 is compared with the standard electronic system, with both cpu temperature be converted to one with cpu power and the irrelevant orthogonalization temperature parameter of environment temperature.Therefore, adjust the rotating speed of radiator fan 14 and when making the orthogonalization parameter of electronic system 700 equal the orthogonalization temperature parameter of this standard electronic system, the ratio of radiating fan rotation speed promptly can be used as a radiating efficiency parameter and revises first rotation speed of the fan to be revised that is obtained by this standard electronic system in electronic system 700 and the standard electronic system.In one embodiment, this orthogonalization temperature parameter is to be defined as:
(T CPU-T ENV)/T CPUTFormula (1),
T wherein CPUBe cpu temperature, T ENVBe environment temperature, T CPUTThe heat that is CPU rises the pairing CPU theoretical temperatures of cpu power in the curve equation.Fig. 9 shows that CPU heat rises the example figure of curve.
In step 810, the calculating module is the orthogonalization temperature parameter T of this standard electronic system under this standard ambient temperature and a set cpu power described in acquisition Fig. 4 step 420 N1, and the pairing radiating fan rotation speed V of this set cpu power FAN1In one embodiment, storage device 36 is to store this standard ambient temperature, this set power, and this cpu temperature, and provide to calculating module 34, and calculate the orthogonalization temperature parameter by calculating module 34.In another embodiment, storage device 36 is the orthogonalization temperature parameters that store this standard electronic system, and directly provides to calculating module 34.
In step 820, calculating module 34 is that output one initial fan speed data is to this fan control and arrangement for detecting 32, so that radiator fan turns round with this initial rotation speed of the fan.
In step 830, calculating module 34 is these cpu temperatures that received according to by fan control and arrangement for detecting 32, this cpu power, and the environment temperature that is received by this ambient temperature sensing device 710, orthogonalization process mode according to identical with the standard electronic system obtains this electronic system and has orthogonalization temperature parameter T N2
In step 840, calculate module 34 and be the relatively orthogonalization temperature parameter of this electronic system and this standard electronic system, whether the difference of judging both is less than a set error.
Calculating module 34 is to carry out different operating according to comparative result.When the difference of pairwise orthogonal temperature parameter during greater than this set error ("No" among the figure), calculating module 34 is execution in step 8501, and adjusts final fan speed data D according to comparative result FANTo adjust the rotation speed of the fan V of radiator fan 14 FAN2And return step 830.Adjust radiating fan rotation speed V FAN2Purpose be to make the difference of two radiating efficiency parameters can be less than this set error.For example, when radiating efficiency parameter as the formula (1) the time, and, then turn down the rotation speed of the fan V of radiator fan 14 when the radiating efficiency parameter of electronic system 700 during less than the radiating efficiency parameter of standard electronic system FAN2So that the radiating efficiency parameter of electronic system increases; Otherwise, then heighten the rotation speed of the fan V of radiator fan 14 FAN2And when the difference of pairwise orthogonal temperature parameter during less than this set error ("Yes" among the figure), calculating module 34 is execution in step 8502, (is V and calculate the ratio value that this electronic system and this standard electronic system either fan rotating speed FAN2/ V FAN1) be this radiating efficiency parameter, wherein the radiator fan ratio of standard heat radiation module is in described this standard electronic system of step 410, the pairing rotation speed of the fan of both having established of this cpu power.Described " radiator fan ratio " is to utilize a known heat radiation module to transfer survey in the laboratory, and simulation CPU adjusts rotation speed of the fan again and makes it reach the minimum rotation speed of the fan of best heat dissipation in the heat of the corresponding generation of different consumed powers institutes.The minimum rotation speed of the fan that writes down the pairing best heat dissipation of each CPU consumed power promptly gets the radiating fan rotation speed ratio.Export storage device 36 to immediately and with this radiating efficiency parameter.
By above explanation as can be known because the orthogonalization temperature parameter is and the irrelevant parameter of cpu power and environment temperature, therefore calculate in theory and the radiating efficiency parameter have nothing to do with the power that environment temperature and CPU carried out at that time.As a result, this given time, in the time of can be only using for the first time for electronic system, or by electronic system design person or user's decision and very long at interval.In addition, though the radiating efficiency parameter is in irrelevant with environment temperature and cpu power in theory, yet, can in order to increase the degree of accuracy of radiating efficiency, and step shown in Figure 8 is carried out respectively, thereby obtain the radiating efficiency parameter of corresponding different CPU power under different cpu powers.Can do on average to obtain an exact value these radiating efficiency parameters; Or design a plurality of power brackets, each cpu power scope is respectively to one of should different capacity, and when adjusting rotation speed of the fan, judges that then in the middle of these a plurality of power brackets which cpu power at that time fall into and use corresponding radiating efficiency parameter.
Now going back to reference to figure 6, is how to utilize the radiating efficiency parameter to revise first fan speed data to be revised to become second method of waiting to revise fan speed data to calculate module 34 in the description of step 4310.In one embodiment, calculating module is that this first rotation speed of the fan to be revised is multiplied by this heat dissipation parameter and becomes this second rotation speed of the fan to be revised.
Now go back to reference to figure 7, with the procurement process of explanation ambient temperature data.At one second given time, this ambient temperature sensing device is the environment temperature in the detecting electronic system 700 and ambient temperature data D is provided TENVTo calculating module 34, revise the usefulness of rotation speed of the fan for calculating module 34, and be stored in the storage device 36.This second given time, because only relevant with environment temperature, so on preferable, can only when system boot, implement, or one to several months implements at interval.
Now go back to reference to figure 6, utilize this second fan speed data to be revised of ambient temperature data correction to become the process of final fan speed data to calculate module 34 in the description of step 4320.In one embodiment, be to store the pairing standard ambient temperature of this standard radiation parameter in the storage device 36.Calculate module 34 and be and revise this according to the difference between this ambient temperature data and this standard ambient temperature and second wait to revise fan speed data and produce this final fan speed data.And correcting mode, for example, this storage device 36 is to store a plurality of temperature difference interval values, and a plurality of rotation speed of the fan residual quantity, wherein each rotation speed of the fan residual quantity is corresponding to a central temperature difference interval.And in the middle of this calculating module to be the difference of determining this environment temperature and this standard ambient temperature fall into this a plurality of temperature difference interval which, and this second rotation speed of the fan to be revised is increased this temperature difference pairing rotation speed of the fan residual quantity in interval and produces this final fan speed data.
Above embodiment be explanation to calculate module 34 be to revise this first fan speed data to be revised according to the radiating efficiency parameter to become one second fan speed data to be revised, revise this according to environment temperature then and second wait to revise fan speed data D FAN2Become final fan speed data.Yet those skilled in the art are when understanding, calculating module 34 also can be to revise this first fan speed data to be revised according to environment temperature to become one second fan speed data to be revised, then according to the radiating efficiency parameter.Revise this and second wait to revise fan speed data D FAN2Become final fan speed data.
Electronic system unique distinction of the present invention is to be used as adjusting with the power that CPU the time is produced in running the main foundation of rotation speed of the fan, so rotation speed of the fan can be done instant adjustment to the implementation status of CPU.In addition, the present invention has the ability according to the characteristic of system, analogy is the radiating efficiency and the environment temperature of heat radiation module, revise the rotating speed of radiator fan, even therefore CPU afterwards arranges in pairs or groups different heat radiation modules and operates on different environment temperatures in dispatching from the factory, still can reach the minimum and best rotation speed of the fan control of the basic radiating requirements of keeping CPU.
Though the present invention by the preferred embodiment explanation as above, this preferred embodiment is not in order to limit the present invention.Those skilled in the art without departing from the spirit and scope of the present invention, should have the ability this preferred embodiment is made various changes and replenished, so protection scope of the present invention is as the criterion with the scope of claims.
Being simply described as follows of symbol in the accompanying drawing:
10：CPU
12: fin
14: radiator fan
16: fan control and arrangement for detecting
18：BIOS
32: fan control and arrangement for detecting
34: calculate module
36: storage device
100,200: traditional electronic devices
300,700: electronic system of the present invention
710: ambient temperature sensing device
D CH: the system performance data
D FAN: final rotation speed of the fan control data
D TCPU: the cpu temperature data
D TENV: ambient temperature data
D VCPU: voltage data
S FAN: the rotation speed of the fan control signal
T CPU: cpu temperature
T ENV: environment temperature
V CPU: core cpu voltage

Claims (25)

1.一种控制电子系统中风扇转速的方法，其特征在于，该电子系统包括一中央处理器以及一由散热风扇及散热片所组成的散热模组，所述控制电子系统中风扇转速的方法包括：1. A method for controlling the speed of a fan in an electronic system, characterized in that the electronic system includes a central processing unit and a heat dissipation module composed of a cooling fan and a heat sink, the method for controlling the speed of a fan in an electronic system include: 量测该中央处理器的核心电压以获得该中央处理器的功率；measuring the core voltage of the CPU to obtain the power of the CPU; 根据该中央处理器的功率来获得一第一待修正风扇转速；以及Obtaining a first fan speed to be corrected according to the power of the CPU; and 根据该电子系统的特性数据来修正该第一待修正风扇转速，correcting the first fan speed to be corrected according to the characteristic data of the electronic system, 其中，该第一待修正风扇转速是一标准中央处理器在搭配一标准散热模组且于一标准环境温度时，该标准中央处理器于该功率下所对应的既设风扇转速，其中该标准中央处理器与该中央处理器是相同种类。Wherein, the first fan speed to be corrected is the preset fan speed corresponding to the standard CPU at the power when a standard CPU is equipped with a standard cooling module and at a standard ambient temperature, wherein the standard The CPU is of the same kind as the CPU. 2.根据权利要求1所述的控制电子系统中风扇转速的方法，其特征在于，量测该中央处理器的核心电压以获得该中央处理器的功率的步骤是量测该中央处理器的核心电压，并将所量测的电压值参照该中央处理器的负载曲线而获得该中央处理器的功率。2. The method for controlling the speed of a fan in an electronic system according to claim 1, wherein the step of measuring the core voltage of the CPU to obtain the power of the CPU is to measure the core of the CPU voltage, and the measured voltage value is referred to the load curve of the CPU to obtain the power of the CPU. 3.根据权利要求1所述的控制电子系统中风扇转速的方法，其特征在于，该特性数据包括该散热模组的散热效能参数。3 . The method for controlling the rotation speed of a fan in an electronic system according to claim 1 , wherein the characteristic data includes a heat dissipation performance parameter of the heat dissipation module. 4 . 4.根据权利要求3所述的控制电子系统中风扇转速的方法，其特征在于，该特性数据更包括该电子系统内的环境温度。4. The method for controlling the rotation speed of a fan in an electronic system according to claim 3, wherein the characteristic data further includes an ambient temperature in the electronic system. 5.根据权利要求1所述的控制电子系统中风扇转速的方法，其特征在于，该特性数据包括该电子系统的散热效能参数及该电子系统内的环境温度。5 . The method for controlling the rotation speed of a fan in an electronic system according to claim 1 , wherein the characteristic data includes heat dissipation performance parameters of the electronic system and ambient temperature in the electronic system. 6.根据权利要求5所述的控制电子系统中风扇转速的方法，其特征在于，根据该特性数据来修正该风扇转速包括：6. The method for controlling the fan speed in an electronic system according to claim 5, wherein correcting the fan speed according to the characteristic data comprises: 根据该散热效能参数来修正该第一待修正风扇转速成为一第二待修正风扇转速，以及根据该环境温度来修正该第二待修正风扇转速；或根据该环境温度来修正该第一待修正风扇转速成为一第二待修正风扇转速，以及根据该散热效能参数来修正该第二待修正风扇转速。Correcting the first fan speed to be corrected according to the heat dissipation performance parameter to become a second fan speed to be corrected, and correcting the second fan speed to be corrected according to the ambient temperature; or correcting the first fan speed to be corrected according to the ambient temperature The fan speed becomes a second fan speed to be corrected, and the second fan speed to be corrected is corrected according to the cooling performance parameter. 7.根据权利要求6所述的控制电子系统中风扇转速的方法，其特征在于，该散热效能参数是当该中央处理器于搭配该散热模组所具有的正交化温度参数等于该标准中央处理器于搭配该标准散热模组所具有的正交化温度参数时，该散热模组与该标准散热模组中散热风扇转速的比例，其中该正交化温度是中央处理器温度经一正交化处理以除去与中央处理器功率及环境温度相关性而成的参数。7. The method for controlling the speed of a fan in an electronic system according to claim 6, wherein the heat dissipation performance parameter is equal to the standard central processing unit when the orthogonal temperature parameter of the central processing unit is matched with the heat dissipation module. When the processor is matched with the orthogonal temperature parameter of the standard heat dissipation module, the ratio of the speed of the heat dissipation fan in the heat dissipation module to the standard heat dissipation module, wherein the orthogonalization temperature is the temperature of the central processing unit after a normalization Alternate processing to remove parameters related to CPU power and ambient temperature. 8.根据权利要求7所述的控制电子系统中风扇转速的方法，其特征在于，该正交化温度参数是(TCPU-TENV)/TCPUT，其中TCPU是中央处理器温度，TENV是环境温度，TCPUT是该中央处理器所具有的一中央处理器热升曲线公式中中央处理器功率所对应的中央处理器理论温度。8. The method for controlling the speed of a fan in an electronic system according to claim 7, wherein the orthogonalized temperature parameter is (T CPU -T ENV )/T CPUT , wherein T CPU is the central processing unit temperature, and T ENV is the ambient temperature, and T CPUT is the theoretical temperature of the CPU corresponding to the power of the CPU in a CPU thermal rise curve formula of the CPU. 9.根据权利要求7所述的控制电子系统中风扇转速的方法，其特征在于，根据该散热效能参数来修正该第一待修正风扇转速成为该第二待修正风扇转速的步骤是将该第一待修正风扇转速乘上该散热效能参数而成该第二待修正风扇转速，以及其中根据该散热效率能参数来修正该第二待修正风扇转速的步骤是将该第二待修正风扇转速乘上该散热效能参数。9. The method for controlling the speed of a fan in an electronic system according to claim 7, wherein the step of correcting the first fan speed to be corrected according to the heat dissipation performance parameter to become the second fan speed to be corrected is to use the first fan speed to be corrected A fan speed to be corrected is multiplied by the heat dissipation performance parameter to form the second fan speed to be corrected, and the step of correcting the second fan speed to be corrected according to the heat dissipation efficiency parameter is to multiply the second fan speed to be corrected by on the cooling performance parameters. 10.根据权利要求6所述的控制电子系统中风扇转速的方法，其特征在于，根据该环境温度来修正该第一或第二待修正风扇转速的步骤包括根据该环境温度与该标准环境温度间的差值来修正该第一或第二待修正风扇转速。10. The method for controlling the speed of a fan in an electronic system according to claim 6, wherein the step of correcting the first or second fan speed to be corrected according to the ambient temperature comprises: according to the ambient temperature and the standard ambient temperature The difference between the first and second fan speeds to be corrected is corrected. 11.根据权利要求10所述的控制电子系统中风扇转速的方法，其特征在于，根据该环境温度与该标准环境温度间的差值来修正该第一或第二待修正风扇转速的步骤包括：11. The method for controlling the rotational speed of a fan in an electronic system according to claim 10, wherein the step of correcting the first or second fan rotational speed to be corrected according to the difference between the ambient temperature and the standard ambient temperature comprises : 确定该环境温度与该标准环境温度间的差值落入多个温差区间当中的哪一个，其中每一该温差区间是对应一风扇转速差量；以及determining which one of a plurality of temperature difference intervals the difference between the ambient temperature and the standard ambient temperature falls into, wherein each of the temperature difference intervals corresponds to a fan speed difference; and 将该第一或第二待修正风扇转速增加该温差区间所对应的风扇转速差量。The first or second fan speed to be corrected is increased by the fan speed difference corresponding to the temperature difference interval. 12.一种电子系统，其特征在于，该电子系统包括：12. An electronic system, characterized in that the electronic system comprises: 一中央处理器；a central processing unit; 一散热模组，其包括一散热片及散热风扇；以及A heat dissipation module, which includes a heat sink and a heat dissipation fan; and 一风扇侦测与控制装置，耦合至该中央处理器及该散热风扇，用以侦测该中央处理器的核心电压而输出一电压数据，以及根据一最终风扇转速数据以操控该散热风扇的转速；A fan detection and control device, coupled to the central processing unit and the cooling fan, is used to detect the core voltage of the central processing unit and output a voltage data, and control the speed of the cooling fan according to a final fan speed data ; 一储存装置，其是储存系统特性数据；以及a storage device for storing system characteristic data; and 一计算模组，耦合至该风扇侦测与控制装置，用以根据该电压数据而产生该中央处理器的功率数据，继而根据该功率数据来产生一第一待修正风扇转速数据，并根据该系统特性数据来修正该第一待修正风扇转速数据成该最终风扇转速数据；A calculation module, coupled to the fan detection and control device, is used to generate the power data of the central processing unit according to the voltage data, and then generate a first fan speed data to be corrected according to the power data, and according to the system characteristic data to correct the first fan speed data to be corrected into the final fan speed data; 其中，该储存装置更储存一标准中央处理器功率-风扇转速公式数据及一标准环境温度，其中该标准中央处理器功率-风扇转速公式数据是一与该中央处理器属相同种类的标准中央处理器在搭配一标准散热模组且于该标准环境温度下时，该标准中央处理器不同功率所对应的既设风扇转速公式数据；以及Wherein, the storage device further stores a standard CPU power-fan speed formula data and a standard ambient temperature, wherein the standard CPU power-fan speed formula data is a standard CPU of the same type as the CPU When the CPU is equipped with a standard cooling module and is at the standard ambient temperature, the established fan speed formula data corresponding to the different power of the standard CPU; and 其中该计算模组是根据该中央处理器的功率数据及该标准中央处理器功率-风扇转速公式数据来产生该第一待修正风扇转速数据。The calculation module generates the first fan speed data to be corrected according to the CPU power data and the standard CPU power-fan speed formula data. 13.根据权利要求12所述的电子系统，其特征在于，该计算模组是基本输入输出系统配合现有的计算机系统环境监控装置而成，或由一般传统逻辑元件组合而成，或是由单晶片微型计算机配合传统逻辑电路元件组合而成。13. The electronic system according to claim 12, characterized in that, the computing module is formed by combining the basic input and output system with the existing computer system environment monitoring device, or is composed of general traditional logic elements, or is composed of A single-chip microcomputer is combined with traditional logic circuit components. 14.根据权利要求12所述的电子系统，其特征在于，该系统特性数据包括该散热模组的散热效能参数。14. The electronic system according to claim 12, wherein the system characteristic data includes a heat dissipation performance parameter of the heat dissipation module. 15.根据权利要求14所述的电子系统，其特征在于，该系统特性数据更包括该电子系统中的环境温度。15. The electronic system according to claim 14, wherein the system characteristic data further includes an ambient temperature in the electronic system. 16.根据权利要求12所述的电子系统，其特征在于，该储存装置更储存一中央处理器负载公式数据，以及该计算模组是根据该中央处理器电压数据及该中央处理器负载公式数据来获得该中央处理器的功率数据。16. The electronic system according to claim 12, wherein the storage device further stores a CPU load formula data, and the calculation module is based on the CPU voltage data and the CPU load formula data to obtain the power data of the CPU. 17.根据权利要求12所述的电子系统，其特征在于，该系统特性数据包括该散热模组的散热效能参数及该电子系统中的环境温度。17. The electronic system according to claim 12, wherein the system characteristic data includes heat dissipation performance parameters of the heat dissipation module and ambient temperature in the electronic system. 18.根据权利要求17所述的电子系统，其特征在于，该计算模组是根据该散热效能参数来修正该第一待修正风扇转速成为一第二待修正风扇转速，以及根据该环境温度来修正该第二待修正风扇转速；或根据该环境温度来修正该第一待修正风扇转速成为一第二待修正风扇转速，以及根据该散热效能参数来修正该第二待修正风扇转速。18. The electronic system according to claim 17, wherein the calculation module corrects the first fan speed to be corrected according to the heat dissipation performance parameter to become a second fan speed to be corrected, and according to the ambient temperature Correcting the second fan speed to be corrected; or correcting the first fan speed to be corrected according to the ambient temperature to become a second fan speed to be corrected, and correcting the second fan speed to be corrected according to the heat dissipation performance parameter. 19.根据权利要求18所述的电子系统，其特征在于，该散热效能参数是当该中央处理器于搭配该散热模组所具有的正交化温度参数与该标准中央处理器于搭配该标准散热模组所具有的正交化温度参数相等时，该散热模组与该标准散热模组中散热风扇转速的比例，其中该正交化温度是中央处理器温度经一正交化处理以除去与中央处理器功率及环境温度相关性而成的参数。19. The electronic system according to claim 18, wherein the heat dissipation performance parameter is an orthogonal temperature parameter of the central processing unit in combination with the heat dissipation module and the standard central processing unit in combination with the standard When the orthogonalized temperature parameters of the heat dissipation module are equal, the ratio of the cooling fan speed in the heat dissipation module to the standard heat dissipation module, wherein the orthogonalization temperature is the temperature of the central processing unit after an orthogonalization process to remove Parameters related to CPU power and ambient temperature. 20.根据权利要求19所述的电子系统，其特征在于，20. The electronic system of claim 19, wherein: 该电子系统更包括一环境温度侦测装置，用以侦测该电子系统中的环境温度；The electronic system further includes an ambient temperature detection device for detecting the ambient temperature in the electronic system; 其中该风扇控制与侦测模组，用以侦测该中央处理器温度；Wherein the fan control and detection module is used to detect the CPU temperature; 其中该计算模组是取得该标准电子系统于该标准环境温度及一既定功率下的正交化温度参数以及该既定功率所对应的散热风扇转速；以及Wherein the calculation module obtains the orthogonalized temperature parameters of the standard electronic system at the standard ambient temperature and a predetermined power, and the cooling fan speed corresponding to the predetermined power; and 其中该计算模组是执行以下步骤而产生该散热效率参数：The calculation module generates the heat dissipation efficiency parameter by performing the following steps: 步骤一：输出一初始风扇数据至该风扇控制与侦测装置；Step 1: output an initial fan data to the fan control and detection device; 步骤二：根据由风扇控制与侦测装置所接收的该中央处理器温度，该中央处理器功率，以及由该环境温度侦测装置所接收的环境温度来计算其正交化温度参数；Step 2: calculating the orthogonalized temperature parameter according to the CPU temperature received by the fan control and detection device, the CPU power, and the ambient temperature received by the ambient temperature detection device; 步骤三：比较该电子系统及该标准电子系统的正交化温度参数的差值是否小于一既定误差；Step 3: comparing whether the difference between the orthogonalization temperature parameters of the electronic system and the standard electronic system is less than a predetermined error; 步骤四：当两正交化温度参数的差值大于该既定误差时，调整该风扇转速数据并输出至该风扇控制与侦测装置，并返回步骤二；而当两正交化温度参数的差值小于该既定误差时，储存该电子系统与该标准电子系统中风扇转速的比例值为该散热效率参数。Step 4: When the difference between the two orthogonalized temperature parameters is greater than the predetermined error, adjust the fan speed data and output it to the fan control and detection device, and return to step 2; and when the difference between the two orthogonalized temperature parameters When the value is less than the predetermined error, store the ratio of the fan speed in the electronic system to the standard electronic system as the heat dissipation efficiency parameter. 21.根据权利要求20所述的电子系统，其特征在于，该计算模组是根据储存于该储存装置的既定中央处理器功率，该标准中央处理器于该既定中央处理器功率、该既设风扇转速以及该标准环境温度下的温度，以及该标准环境温度，加以计算而取得该标准电子系统的正交化温度参数，或其中该储存装置是储存该标准电子系统的正交化温度参数而该计算模组是由该储存装置取得该标准电子系统的正交化温度参数。21. The electronic system according to claim 20, wherein the calculation module is based on the predetermined CPU power stored in the storage device, the standard CPU is based on the predetermined CPU power, the preset fan speed and the temperature at the standard ambient temperature, and the standard ambient temperature are calculated to obtain the orthogonalized temperature parameter of the standard electronic system, or wherein the storage device stores the orthogonalized temperature parameter of the standard electronic system The calculation module obtains the normalization temperature parameter of the standard electronic system from the storage device. 22.根据权利要求21所述的电子系统，其特征在于，该正交化温度参数是(TCPU-TENV)/TCPUT，其中TCPU是中央处理器温度，TENV是环境温度，TCPUT是该中央处理器所具有的一中央处理器热升曲线公式中中央处理器功率所对应的中央处理器理论温度。22. The electronic system according to claim 21, wherein the orthogonalized temperature parameter is (T CPU -T ENV )/T CPUT , wherein T CPU is the central processing unit temperature, T ENV is the ambient temperature, and T CPUT is the theoretical temperature of the CPU corresponding to the power of the CPU in a CPU thermal rise curve formula possessed by the CPU. 23.根据权利要求19所述的电子系统，其特征在于，该计算模组根据该散热效能参数来修正该第一待修正风扇转速成为一第二待修正风扇转速的过程是将该第一待修正风扇转速乘上该散热效能参数而成该第二待修正风扇转速，以及其中该计算模组根据该散热效能参数来修正该第二待修正风扇转速的过程是将该第二待修正风扇转速乘上该散热效能参数。23. The electronic system according to claim 19, wherein the calculation module corrects the first fan speed to be corrected to a second fan speed to be corrected according to the heat dissipation performance parameter. The corrected fan speed is multiplied by the heat dissipation performance parameter to form the second fan speed to be corrected, and the calculation module corrects the second fan speed to be corrected according to the heat dissipation performance parameter. Multiply this thermal performance parameter. 24.根据权利要求18所述的电子系统，其特征在于，该计算模组是根据该环境温度数据及该标准环境温度间的差值来修正该第二待修正风扇转速数据而产生该最终风扇转速数据或来修正该第一待修正风扇转速数据成为该第二待修正风扇转速数据。24. The electronic system according to claim 18, wherein the calculation module corrects the second fan speed data to be corrected according to the difference between the ambient temperature data and the standard ambient temperature to generate the final fan The rotational speed data may be used to modify the first fan rotational speed data to be corrected to become the second fan rotational speed data to be corrected. 25.根据权利要求24所述的电子系统，其特征在于，25. The electronic system of claim 24, wherein: 该储存装置更储存多个温差区间值与多个风扇转速差量对应于每一温差区间；The storage device further stores a plurality of temperature difference interval values and a plurality of fan speed differences corresponding to each temperature difference interval; 其中该计算模组根据该环境温度数据及该标准环境温度间的差值来修正该第二待修正风扇转速数据而产生该最终风扇转速数据的过程是确定该环境温度与该标准环境温度的差值落入该多个温差区间当中的哪一个，并将该第二待修正风扇转速增加该温差区间所对应的风扇转速差量而产生该最终风扇转速数据；以及The calculation module corrects the second fan speed data to be corrected according to the difference between the ambient temperature data and the standard ambient temperature to generate the final fan speed data is to determine the difference between the ambient temperature and the standard ambient temperature value falls into which one of the plurality of temperature difference intervals, and the second fan speed to be corrected is increased by the fan speed difference corresponding to the temperature difference interval to generate the final fan speed data; and 其中该计算模组根据该环境温度数据及该标准环境温度间的差值来修正该第一待修正风扇转速数据成该第二待修正风扇转速数据的过程是确定该环境温度与该标准环境温度的差值落入该多个温差区间当中的哪一个，并将该第一待修正风扇转速增加该温差区间所对应的风扇转速差量而成为该第二待修正风扇转速数据。The calculation module corrects the first fan speed data to be corrected into the second fan speed data to be corrected according to the difference between the ambient temperature data and the standard ambient temperature is to determine the ambient temperature and the standard ambient temperature Which one of the plurality of temperature difference intervals does the difference of the temperature difference fall into, and the first fan speed to be corrected is increased by the fan speed difference corresponding to the temperature difference interval to become the second fan speed data to be corrected.
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