CN101192066A - Radiation parameter obtaining method - Google Patents
Radiation parameter obtaining method Download PDFInfo
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- CN101192066A CN101192066A CNA2006101633153A CN200610163315A CN101192066A CN 101192066 A CN101192066 A CN 101192066A CN A2006101633153 A CNA2006101633153 A CN A2006101633153A CN 200610163315 A CN200610163315 A CN 200610163315A CN 101192066 A CN101192066 A CN 101192066A
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- fan
- radiator fan
- speed
- heat dissipation
- heat radiation
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Abstract
A heat dissipation parameter acquisition method is applied to an electronic device which comprises at least one heat dissipation fan, a fan speed control unit corresponding to the heat dissipation fan, and a temperature detecting unit, wherein, the heat dissipation fan is used for heat dissipation of an electronic element of the electronic device. The method is firstly provided with a signal generator capable of adjusting a duty cycle, then through adjusting different duty cycles, the signal generator is enabled to correspondingly output different fan speed regulation signals to the fan speed control unit of the electronic device, and the fan speed control unit is then enabled to adjust the rotating speed of the heat dissipation fan according to different fan speed regulation signals. Furthermore, the temperature detecting unit is matched to carry out temperature detection of the electronic element, thereby a heat dissipation test program for testing the heat dissipation effect of the heat dissipation fan runs under preset heat dissipation requirements, and accordingly heat dissipation parameters of the heat dissipation fan can be acquired for making a Fan Speed Control (FSC) strategy.
Description
Technical field
The present invention relates to a kind of radiation parameter obtaining method, more specifically, especially refer to a kind ofly to be applied to have at least one radiator fan, in the electronic installation to fan control speed unit that should radiator fan and warm measurement unit, wherein, this radiator fan is the radiation parameter obtaining method that dispels the heat in order to the electronic component to this electronic installation.
Background technology
Along with the high speed development of electronics technology, the degree of circuit integration is more and more higher, though the volume of electronic product is still constantly reducing, the heat of Ju Zenging makes the particularly protrusion that the importance of heat dissipation technology shows simultaneously.
Be example just with the central processing unit in the most typical servomechanism (CPU), as everyone knows, a new direction has been stepped in the development of present central processing unit, the central processing unit of Intel Company has begun to adopt the 65nm manufacture method, and corresponding product is positive now popular " double-core " (dual-core) processor, though it has had the lifting of matter in performance, but heat also increases significantly, according to data presentation, Intel will adopt the processor of double-core framework in the near future comprehensively, servomechanism is no exception, therefore, the radiator fan that is loaded into corresponding central processing unit on the servomechanism motherboard then must be through strict more test better to satisfy the heat radiation needs of central processing unit before dispatching from the factory.
The servomechanism radiator fan test process of enterprise in the past, generally be at first by dispelling the heat test organization after pulse width modulation (PWM) Logic Circuit Design of motherboard is finished, transfer to firmware (firmware) department and in motherboard wafer (as the BMC wafer), write easy radiator fan control program sign indicating number to realize this circuit function (even also this wafer can pass through the rotating speed of this radiator fan control program sign indicating number output pwm signal with the control radiator fan), return the heat radiation test procedure that this heat radiation test organization carries out radiator fan on the motherboard more then, for example, under which kind of temperature, radiator fan promptly can reach the requirement of heat radiation at the rotating speed (noise is minimum) of minimum; Under which kind of temperature, do not need rotation speed of the fan (not having noise) promptly can reach the requirement of heat radiation; In maximum (top) speed, whether can reach requirement of heat radiation or the like, to obtain the correlation parameter of radiator fan, again this correlation parameter is fed back to firmware department by these tests at last, formulate rotation speed of the fan control (Fan Speed Control according to it for firmware department; FSC) strategy, and the motherboard wafer is write the automatic control program of radiator fan according to the rotation speed of the fan control strategy.
Since above-mentioned in order to the heat radiation test procedure of obtaining the radiator fan correlation parameter be must wait for that the writing program of dispelling the heat the earlier preliminary foundation of firmware department the designed logical circuit of test organization carrying out easy radiator fan control program sign indicating number is finished after, just can carry out, can cause the prolongation of integral heat sink testing-program time far and away, efficient is very low.
In addition, pwm signal on the motherboard produces wafer, with the BMC wafer is example, its function that produces pwm signal is still imperfect, therefore, can cause certain restriction to the rotating speed control of radiator fan, produce pwm signal if buy special waveform generator, cost an arm and a leg on the one hand, on the other hand because only can use this PWM waveform generation function, so can cause waste to the use of equipment.
In sum, how to provide a kind of radiation parameter obtaining method to avoid above-mentioned existing disappearance, become the present problem that needs solution then.
Summary of the invention
In view of the shortcoming of above-mentioned prior art, fundamental purpose of the present invention is to provide a kind of radiation parameter obtaining method, with the test procedure that directly dispels the heat by the mode of simulation pwm signal, can obtain the radiation parameter of this radiator fan.
Another object of the present invention is to provide a kind of radiation parameter obtaining method that need not wait for the writing program of easy radiator fan control program sign indicating number,, increase work efficiency to shorten the integral heat sink testing-program time.
Another object of the present invention is to provide a kind of radiation parameter obtaining method that does not have rotating speed control restriction.
Another purpose of the present invention is to provide a kind of radiation parameter obtaining method with low cost.
For reaching above-mentioned purpose, the invention provides a kind of radiation parameter obtaining method, be applied to have at least one radiator fan, in the electronic installation to fan control speed unit that should radiator fan, warm measurement unit, wherein, this radiator fan dispels the heat in order to the electronic component to this electronic installation, and this method comprises the steps: to provide the signal generator that can adjust dutycycle (duty cycle); And by adjusting different dutycycles, make the fan control speed unit of the different fan speed-regulating signal of the corresponding output of this signal generator to this electronic installation, so that the rotating speed of this radiator fan is adjusted in this fan control speed unit according to different fan speed-regulating signals, and this temperature measurement unit of arranging in pairs or groups temperature detecting that this electronic component is carried out, under the condition that requires with the heat radiation that is used to preset, test the heat radiation test procedure of the radiating effect of this radiator fan, and then can obtain the radiation parameter of this radiator fan, thereby for formulating rotation speed of the fan control (Fan Speed Control; FSC) strategy.
In a preferred embodiment of the present invention, this signal generator is for adjusting the self-maintained circuit of dutycycle; This fan speed-regulating signal is a periodic square wave signal; This heat radiation test procedure comprises the steps: at least (1) tests in this radiator fan during at maximum (top) speed, whether can't meet this heat radiation requirement, if, then proceed to step (2), if not, then proceed to step (3); (2) change the radiator fan of higher-wattage, and return to step (1); And (3) test and must under which kind of temperature, this radiator fan is in minimum speed, can meet this heat radiation requirement and under which kind of temperature, do not need the running of this radiator fan, can meet this heat radiation requirement.
Than prior art, radiation parameter obtaining method of the present invention is mainly by the different different fan speed-regulating signal of the corresponding output of dutycycle of signal generator foundation, also be, by the easy radiator fan control program sign indicating number that needs firmware department in wafer, to write in this fan speed-regulating signal replacement prior art, with the pwm signal of rotating speed that makes this wafer be exported by this radiator fan control program sign indicating number in order to the control radiator fan, in view of the above, test procedure can directly dispel the heat, to obtain the radiation parameter of this radiator fan, not only shorten the integral heat sink testing-program time significantly, increase work efficiency, also by Simple Design get final product signal generator (self-maintained circuit), make this heat radiation test procedure not have rotating speed control restriction and expensive anxiety.
Description of drawings
Fig. 1 is a process flow diagram, in order to the embodiment steps flow chart of explanation radiation parameter obtaining method of the present invention;
Fig. 2 is a calcspar, in order to the applied embodiment of embodiment steps flow chart of explanation radiation parameter obtaining method of the present invention;
Fig. 3 is a circuit diagram, in order to the principle of work of the signal generator that is used in the radiation parameter obtaining method of the present invention to be described; And
Fig. 4 is a process flow diagram, in order to the embodiment steps flow chart of the heat radiation test procedure in the radiation parameter obtaining method of the present invention to be described.
The main element symbol description
1 electronic installation
10 electronic components
11 radiator fans
12 fan controls speed unit
13 warm measurement units
2 signal generators
S1 to S2 step
S10 to S12 step
Embodiment
Below be that the personage who is familiar with this skill can understand other advantages of the present invention and effect easily by the content that this instructions disclosed by specific instantiation explanation embodiments of the present invention.The present invention also can be implemented or be used by other different instantiations, and the every details in this instructions also can be based on different viewpoints and application, carries out various modifications and change under the spirit of the present invention not deviating from.
See also Fig. 1 and 2, be respectively process flow diagram and calcspar, in order to the explanation radiation parameter obtaining method of the present invention the embodiment steps flow chart with and applied embodiment.As shown in the figure, radiation parameter obtaining method of the present invention is applied to have at least one radiator fan 11, in the electronic installation 1 to fan control speed unit 12 that should radiator fan 11 and warm measurement unit 13, wherein, this radiator fan 11 is in order to the electronic component 10 in this electronic installation 1 is dispelled the heat.
In present embodiment, this electronic installation 1 is to be embodied as servomechanism (Server), and this electronic component 10 is the central processing units (CPU) that are embodied as in this servomechanism, 11 of this radiator fans are the CPU radiator fan 11 in the servomechanism, certainly, other elements for example electronic component of heating such as electric capacity or inductance also can dispel the heat by this radiator fan 11, therefore the object that dispels the heat not is to exceed with present embodiment, and, this electronic installation 1 also can be data processing equipments such as household PC, so the application person of institute of the present invention only need satisfy and has radiator fan 11, controlling the fan control speed unit 12 of these radiator fan 11 rotating speeds and the condition of warm measurement unit 13 gets final product.
This radiation parameter obtaining method comprises the steps:
Step S1 provides the signal generator 2 that can adjust dutycycle (duty cycle).In present embodiment, this step S1 provides one can adjust dutycycle and mutually should dutycycle and export the signal generator 2 of fan speed-regulating signal earlier.Then proceed to step S2.
Step S2, by adjusting different dutycycles, make the fan control speed unit 12 of the different fan speed-regulating signal of these signal generator 2 corresponding outputs to this electronic installation 1, so that the rotating speed of this radiator fan 11 is adjusted in this fan control speed unit 12 according to different fan speed-regulating signals, and the temperature detecting that carries out of 13 pairs of these electronic components 10 of this temperature measurement unit of arranging in pairs or groups, under the condition that requires with the heat radiation that is used to preset, test the heat radiation test procedure of the radiating effect of this radiator fan 11, and then can obtain the radiation parameter of this radiator fan 11, thereby for formulating rotation speed of the fan control (Fan Speed Control; FSC) strategy.
In present embodiment, this signal generator 2 is to use for passing through to adjust different dutycycles, the different fan speed-regulating signal of corresponding output is to the fan control speed unit 12 of this electronic installation 1, so that the rotating speed of this radiator fan 11 is adjusted in this fan control speed unit 12 according to different fan speed-regulating signals, and the temperature detecting that carries out with 13 pairs of these electronic components 10 of this temperature measurement unit, under the condition that requires with the heat radiation that is used to preset, test the heat radiation test procedure of the radiating effect of this radiator fan 1, and then can obtain the radiation parameter of this radiator fan, thereby for formulating the rotation speed of the fan control strategy.
Further, see also Fig. 3, during actual enforcement, this signal generator 2 can be the autoexcitation oscillatory circuit that can adjust dutycycle, as shown in the figure, according to the self-sustained oscillation principle, resistance R 1 and R2 have formed positive feedback (feedback) circuit, when output voltage V o, feedback operational amplifier (OP-AMP then; Operational Amplifier) the voltage V+ of positive terminal (V+=(R1/R1+R2) * Vo).And the charge and discharge loop that the negative feedback circuit is made up of variable resistor Rw and resistance R 4, capacitor C.
This operational amplifier at this in order to device as a comparison, make comparisons in order to voltage Vc and V+ the capacitor C two ends, polarity with decision output voltage V o is plus or minus, and the polarity of Vo is determining that the electric current by capacitor C is charging (Vc is increased) or discharge (Vc is reduced), and the height of Vc, also make comparisons with V+ once more, and the polarity of decision output voltage V o, so constantly compare processing repeatedly, can produce aforesaid fan speed-regulating signal at output terminal, in this autoexcitation oscillatory circuit, be periodic square wave signal, the frequency of this periodic square wave signal can calculate according to following formula one.
f
0=1/2 * (Rw+R4) * C * 1n (1+2R1/R2) ... formula one
Hold above-mentioned, the dutycycle (T=1/f of this fan speed-regulating signal (i.e. this periodic square wave signal)
0) variation can determine this radiator fan 11 change in rotational speed, and diode D1, D2 cooperates variable resistor Rw can realize the adjustable function of the dutycycle of this fan speed-regulating signal (i.e. this periodic square wave signal), particularly, when the adjustment of variable resistor Rw by its adjustable cantilever, make when resistance becomes big, charging rate will be greater than discharge time constant, thereby the dutycycle of this fan speed-regulating signal (i.e. this periodic square wave signal) is increased, relatively, when this fan speed-regulating signal is sent to this fan control speed unit 12, then make these radiator fan 11 rotating speeds increase, in like manner, variable resistor Rw makes when resistance becomes maximal value by the adjustment of its adjustable cantilever, the dutycycle maximum of this fan speed-regulating signal (i.e. this periodic square wave signal), thereby can make this radiator fan 11 reach full-speed operation; Otherwise, variable resistor Rw is by the adjustment of its adjustable cantilever, make when resistance diminishes that the dutycycle of this fan speed-regulating signal (i.e. this periodic square wave signal) can correspondingly diminish, relatively, then can make the rotating speed of this radiator fan 11 reduce, in like manner, variable resistor Rw makes when resistance becomes minimum value by the adjustment of its adjustable cantilever, the dutycycle minimum of this fan speed-regulating signal (i.e. this periodic square wave signal), thereby can make this radiator fan 11 reduce to minimum speed.
Through above-mentioned explanation as can be known, by adjusting the dutycycle of the fan speed control signal (i.e. this periodic square wave signal) that this signal generator 2 produces, can realize controlling the function of the rotating speed of this radiator fan 11, with so the temperature detecting that carries out of 13 pairs of these electronic components 10 of this temperature measurement unit of arranging in pairs or groups, under the condition that the heat radiation that is used to preset requires, test the heat radiation test procedure of the radiating effect of this radiator fan 11, and after the heat radiation test procedure is finished, can obtain the radiation parameter of this radiator fan 11, thereby for formulating the rotation speed of the fan control strategy.
What need be illustrated is, above-mentioned heat radiation requires to be meant in this heat radiation test procedure, the required condition that meets of the radiating effect of this radiator fan 11, it can be parameters such as temperature, whether meets the judgement that this heat radiation requires in order to the radiating effect that carries out this radiator fan 11.
Then, see also Fig. 4 again, in order to the embodiment steps flow chart of this heat radiation test procedure to be described, this heat radiation test procedure comprises the steps: at least
Step S10 tests in this radiator fan 11 during at maximum (top) speed, whether can't meet this heat radiation requirement, if, then proceed to step S11, if not, then proceed to step S12;
In step S11, change the radiator fan 11 of higher-wattage, and return to step S10; And
In step S12, test also must under which kind of temperature, and this radiator fan 11 is in minimum speed, can meet this heat radiation requirement and under which kind of temperature, do not need the running of this radiator fan 11, can meet this heat radiation requirement.In present embodiment, this step S12 is in order to draw under minimum noise and noiseless situation, this temperature measurement unit 13 is measured temperature on this electronic component 10, but this heat radiation test procedure is not in order to limit the test procedure that this heat radiation test procedure can carry out only for the example explanation.
In sum, radiation parameter obtaining method of the present invention is mainly by the different different fan speed-regulating signal of the corresponding output of dutycycle of signal generator foundation, also be, by the easy radiator fan control program sign indicating number that needs firmware department in wafer, to write in this fan speed-regulating signal replacement prior art, with the pwm signal of rotating speed that makes this wafer be exported by this radiator fan control program sign indicating number in order to the control radiator fan, in view of the above, test procedure can directly dispel the heat, to obtain the radiation parameter of this radiator fan, not only shorten the integral heat sink testing-program time significantly, increase work efficiency, also by simple circuit design get final product signal generator (self-maintained circuit), make this heat radiation test procedure not have rotating speed control and limit and expensive anxiety.The foregoing description is illustrative principle of the present invention and effect thereof only, but not is used to limit the present invention.Any those skilled in the art all can be under spirit of the present invention and category, and the foregoing description is modified and changed.Therefore, the scope of the present invention should be listed as claim.
Claims (4)
1. radiation parameter obtaining method, be applied to have at least one radiator fan, in the electronic installation to fan control speed unit that should radiator fan and warm measurement unit, wherein, this radiator fan dispels the heat in order to the electronic component to this electronic installation, and this radiation parameter obtaining method comprises the steps:
The signal generator that can adjust dutycycle is provided; And
By adjusting different dutycycles, make the fan control speed unit of the different fan speed-regulating signal of the corresponding output of this signal generator to this electronic installation, so that the rotating speed of this radiator fan is adjusted in this fan control speed unit according to different fan speed-regulating signals, and this temperature measurement unit of arranging in pairs or groups temperature detecting that this electronic component is carried out, under the condition that requires with the heat radiation that is used to preset, test the heat radiation test procedure of the radiating effect of this radiator fan, and then can obtain the radiation parameter of this radiator fan, thereby for formulating the rotation speed of the fan control strategy.
2. radiation parameter obtaining method according to claim 1, wherein, this signal generator is for adjusting the self-maintained circuit of dutycycle.
3. radiation parameter obtaining method according to claim 1, wherein, this fan speed-regulating signal is a periodic square wave signal.
4. radiation parameter obtaining method according to claim 1, wherein, this heat radiation test procedure comprises the steps: at least
(1) test in this radiator fan during at maximum (top) speed, whether can't meet this heat radiation requirement, if, then proceed to step (2), if not, then proceed to step (3);
(2) change the radiator fan of higher-wattage, and return to step (1); And
(3) test and must under which kind of temperature, this radiator fan is in minimum speed, can meet this heat radiation requirement and under which kind of temperature, do not need the running of this radiator fan, can meet this heat radiation requirement.
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| CNA2006101633153A CN101192066A (en) | 2006-11-30 | 2006-11-30 | Radiation parameter obtaining method |
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| CNA2006101633153A CN101192066A (en) | 2006-11-30 | 2006-11-30 | Radiation parameter obtaining method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562636A (en) * | 2010-12-16 | 2012-07-11 | 普天信息技术研究院有限公司 | Stepless speed adjusting method and control system for fan speed of wireless base station equipment |
| CN103486070A (en) * | 2013-09-24 | 2014-01-01 | 浪潮电子信息产业股份有限公司 | Fan adjustment and control testing method for optimizing power consumption |
| CN104375925B (en) * | 2014-11-25 | 2017-08-08 | 新华三技术有限公司 | Control method for fan, control device and the server of server |
| CN113641230A (en) * | 2020-04-27 | 2021-11-12 | 捷普科技（上海）有限公司 | Computer system |
-
2006
- 2006-11-30 CN CNA2006101633153A patent/CN101192066A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562636A (en) * | 2010-12-16 | 2012-07-11 | 普天信息技术研究院有限公司 | Stepless speed adjusting method and control system for fan speed of wireless base station equipment |
| CN102562636B (en) * | 2010-12-16 | 2014-10-15 | 普天信息技术研究院有限公司 | Stepless speed adjusting method and control system for fan speed of wireless base station equipment |
| CN103486070A (en) * | 2013-09-24 | 2014-01-01 | 浪潮电子信息产业股份有限公司 | Fan adjustment and control testing method for optimizing power consumption |
| CN103486070B (en) * | 2013-09-24 | 2016-01-13 | 浪潮电子信息产业股份有限公司 | A kind of fan regulation and controlling test method of optimizing power consumption |
| CN104375925B (en) * | 2014-11-25 | 2017-08-08 | 新华三技术有限公司 | Control method for fan, control device and the server of server |
| CN113641230A (en) * | 2020-04-27 | 2021-11-12 | 捷普科技（上海）有限公司 | Computer system |
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