CN105792606B - The heat dissipating method of fan rotational frequency control method, device and optical projection system - Google Patents
The heat dissipating method of fan rotational frequency control method, device and optical projection system Download PDFInfo
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- CN105792606B CN105792606B CN201610201375.3A CN201610201375A CN105792606B CN 105792606 B CN105792606 B CN 105792606B CN 201610201375 A CN201610201375 A CN 201610201375A CN 105792606 B CN105792606 B CN 105792606B
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20209—Thermal management, e.g. fan control
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/16—Cooling; Preventing overheating
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Projection Apparatus (AREA)
Abstract
The present invention provides the heat dissipating method of a kind of fan rotational frequency control method, device and optical projection system, and methods described includes：Obtain the electronic equipment air themperature of air inlet, the air themperature of air outlet and the electronic equipment caused total amount of heat within n-th of time cycle within n-th of time cycle；N is the integer more than or equal to 1；According to the air themperature of the electronic equipment caused total amount of heat, the air themperature of the fresh air inlet and the air outlet within n-th of time cycle, it is determined that the rotating speed of air inlet fan and air outlet fan in (n+1)th time cycle adjacent with n-th of time cycle.The heat dissipating method of fan rotational frequency control method of the embodiment of the present invention, device and optical projection system can be just adjusted to rotation speed of the fan before temperature rise by the accumulation of heat in control electronics, be realized in time and electronic equipment be cooled.
Description
Technical field
The present invention relates to electronics field, more particularly to a kind of fan rotational frequency control method, device and optical projection system
Heat dissipating method.
Background technology
When electronic equipment (such as computer, laser-projector etc.) is operated, it will usually substantial amounts of heat is produced in system
Amount.Internal system temperature is too high, and the performance of electronic equipment can be caused to damage.Therefore, installation fan is needed to enter in electronic equipment
Row radiating.Rotation speed of the fan is excessively slow, and heat dispersion can be caused bad, influence the performance of electronic equipment, and rotation speed of the fan is too fast, can increase
Caused noise in electronic equipment running, and waste system resource.Therefore, it is necessary to enter to the rotating speed of electronic equipment internal fan
Row fast and accurately controls.
General fan rotational frequency control method in the prior art, it is that segmentation control is carried out according to the temperature of electronic equipment internal
System.When detecting that the temperature in electronic equipment is increased to the first predetermined threshold value, rotation speed of the fan is improved；When in electronic equipment
When temperature is reduced to the second predetermined threshold value, rotation speed of the fan is reduced.
But fan rotational frequency control method of the prior art, when temperature is increased to the first predetermined threshold value just to fan
Rotating speed is adjusted, and after one section of duration the temperature in electronic equipment can just reduced.In this time, electronic equipment is still
It can at a relatively high temperature work, the performance of electronic equipment is impacted.
The content of the invention
The embodiment of the present invention provides the heat dissipating method of a kind of fan rotational frequency control method, device and optical projection system, for solving
Fan rotational frequency control method certainly of the prior art can not cool to electronic equipment in time, influence asking for electronic equipment performance
Topic.
In a first aspect, the embodiment of the present invention is by a kind of fan rotational frequency control method, including：
Obtain the electronic equipment air themperature of air inlet, the air themperature of air outlet and institute within n-th of time cycle
State electronic equipment caused total amount of heat within n-th of time cycle；N is the integer more than or equal to 1；N is more than or equal to 1
Integer；
According to the electronic equipment within n-th of time cycle caused total amount of heat, the fresh air inlet Air Temperature
The air themperature of degree and the air outlet, it is determined that air intake in (n+1)th time cycle adjacent with n-th of time cycle
One's intention as revealed in what one says fans the rotating speed with air outlet fan；Wherein, the air inlet fan is installed in the air inlet, the air outlet fan
It is installed in the air outlet.
Second aspect, the embodiment of the present invention also provide a kind of fan rotation speed control apparatus, including：
Acquisition module, for obtaining the electronic equipment air themperature of air inlet and air outlet within n-th of time cycle
Air themperature and the electronic equipment caused total amount of heat within n-th of time cycle；N is the integer more than or equal to 1；
Processing module, for according to the electronic equipment within n-th of time cycle caused total amount of heat, it is described enter
The air themperature of the air themperature of air holes and the air outlet, it is determined that when adjacent with n-th of time cycle (n+1)th
Between in the cycle air outlet fan rotating speed；Wherein, the air inlet fan is installed in the air inlet, the air outlet fan
It is installed in the air outlet.
The third aspect, the embodiment of the present invention also provide a kind of heat dissipating method of optical projection system, including：
Obtain the optical projection system within n-th of time cycle the air themperature of air inlet, the air themperature of air outlet with
And the optical projection system caused total amount of heat within n-th of time cycle；N is the integer more than or equal to 1；N be more than etc.
In 1 integer；
According to the optical projection system within n-th of time cycle caused total amount of heat, the fresh air inlet Air Temperature
The air themperature of degree and the air outlet, it is determined that air intake in (n+1)th time cycle adjacent with n-th of time cycle
One's intention as revealed in what one says fans the rotating speed with air outlet fan；Wherein, the air inlet fan is installed in the air inlet, the air outlet fan
It is installed in the air outlet；
According to the rotating speed of air inlet fan in (n+1)th time cycle determined and air outlet fan to the throwing
Shadow system is radiated.
The heat dissipating method of fan rotational frequency control method provided in an embodiment of the present invention, device and optical projection system, according to electronics
Input power, power output of the equipment within n-th of time cycle calculate caused total amount of heat in the electronic equipment, according to institute
Electronic equipment caused total amount of heat within n-th of time cycle is stated, calculates the air intake one's intention as revealed in what one says in (n+1)th time cycle
The rotating speed of fan and air outlet fan.When the rotation for the rotating speed that the fan of the electronic equipment is determined according to the method described above, i.e.,
Can by the electronic equipment, caused heat removes in n-th of time cycle so that the electronic equipment internal reaches
Thermal balance, prevent temperature from raising.Using fan rotational frequency control method of the embodiment of the present invention, by direct control electronics
Accumulation of heat, just rotation speed of the fan can be adjusted before temperature rise, realize in time and electronic equipment is cooled, protect
The performance of electronic equipment is demonstrate,proved.Meanwhile using fan rotational frequency control method of the embodiment of the present invention, the air inlet fan and described
During the rotational speed determined described in the use of air outlet fan, you can discharge caused heat in n-th of time cycle, effectively
Ground radiates to electronic equipment, so as to avoid fan from being rotated under too high rotating speed, can save system resource, and reduce electricity
Noise during sub- equipment operation, improve the service life of fan.Also, qualitatively rotation speed of the fan is carried out with the prior art thick
The mode slightly adjusted is compared, and according to electronic equipment, the caused total amount of heat within n-th of time cycle determines the embodiment of the present invention
Rotation speed of the fan of the electronic equipment (n+1)th cycle, accurate rotation speed of the fan value can be obtained, so as to realize to rotation speed of the fan
Accurate adjustment is more economical effective compared with prior art.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to do one and simply introduce, it should be apparent that, drawings in the following description are this hairs
Some bright embodiments, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of fan rotational frequency control method of the embodiment of the present invention；
Fig. 2 is the structural representation of optical projection system of the embodiment of the present invention；
Fig. 3 is the operating temperature of light source and the variation relation curve synoptic diagram of operating current；
Fig. 4 is light power curve synoptic diagram of the light source at a temperature of different operating；
Fig. 5 is the wavelength conversion efficiency curve synoptic diagram figure of Wavelength converter；
Fig. 6 is the circuit theory schematic diagram of fan control device of the embodiment of the present invention；
Fig. 7 is the schematic flow sheet of the heat dissipating method of optical projection system of the embodiment of the present invention.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Fan rotational frequency control method of the embodiment of the present invention and device, for according to electronic apparatus system caused heat in real time
The rotating speed of fan is adjusted, the heat in system is not produced accumulation, so as to ensure that the temperature of electronic equipment internal begins
It is maintained at eventually in suitable scope, has both ensure that the systematic function of electronic equipment, also reduces caused by electronic equipment operation
Noise.
It will be understood to those skilled in the art that fan rotational frequency control method of the embodiment of the present invention goes for various adopt
The electronic equipment to be radiated with fan to system, such as：PC, optical projection system, transformer, oscillograph, signal occur
Device, interchanger, server, soft box, industrial control equipment and Medical Devices etc..
Embodiment one
Fig. 1 is the schematic flow sheet of fan rotational frequency control method of the embodiment of the present invention.
Referring to Fig. 1, each step of fan rotational frequency control method of the embodiment of the present invention is completed by fan rotation speed control apparatus,
Methods described includes：
S101：Obtain air themperature, the air themperature of air outlet of air inlet of the electronic equipment within n-th of time cycle
And the electronic equipment caused total amount of heat within n-th of time cycle；N is the integer more than or equal to 1；
Specifically, the air themperature of the air inlet of the electronic equipment and the air themperature of air outlet can be respectively by installing
In the thermistor of the air inlet and the air outlet, measurement obtains in real time.
Caused total amount of heat can be according to the electronic equipment in institute within n-th of time cycle for the electronic equipment
State the input power in n-th of time cycle and power output determines.
Input power of the electronic equipment within n-th of time cycle can be according to the electronic equipment at described n-th
Between in the cycle operating current of input and operating voltage obtain.Galvanometer and potentiometer are provided with electronic equipment, according to the electricity
The operational voltage value that the working current value and the potentiometer that flowmeter collects collect can obtain the electronic equipment n-th
Input power in the individual time cycle.The power output of the electronic equipment can be according to the use pair of the working method of electronic equipment
The method answered determines.For example, light source is directed to, can be according to the input current of light source and the The concrete specification of light source
Parameter determines.For equipment such as transformer, voltage-stablizer, power supplys, output can be determined by measuring output current and output voltage
Power；For another example, for converting electrical energy into the electronic equipment of mechanical energy, such as motor, corresponding power output can be used
Computational methods determination power output.
According to law of conservation of energy, input power of the electronic equipment within n-th of time cycle is equal to the electronics
The power of power output and electronic equipment loss of the equipment within n-th of time cycle, the electronic equipment damage
The power of consumption is embodied in the form of heat energy.Therefore, the input power according to the electronic equipment within n-th of time cycle
And power output, you can to draw the electronic equipment caused total amount of heat within n-th of time cycle.
S102：According to the electronic equipment within n-th of time cycle caused total amount of heat, the fresh air inlet sky
The air themperature of temperature degree and the air outlet, it is determined that in (n+1)th time cycle adjacent with n-th of time cycle
The rotating speed of air inlet fan and air outlet fan；Wherein, the air inlet fan is installed in the air inlet, the air outlet
Fan is installed in the air outlet.
Specifically, the air inlet opening position of the electronic equipment is provided with air inlet fan, is equiped with air outlet position
Air outlet fan.In order to ensure the pressure balance in electronic equipment, the air inlet fan uses same control gauge with air outlet fan
The fan of lattice, and use identical rotating speed.The air inlet fan it is equal with the quantity of the fan of the air outlet,
Think one or more.Time cycle represents the adjustment cycle of rotation speed of the fan, in theory for, the adjustment cycle is shorter, right
The control of temperature is more accurate, but frequently adjustment rotation speed of the fan can take more system resource., can be with during specific implementation
The time cycle is set with reference to the distribution condition of system resource.
In order to determine the specific rotating speed of the air inlet fan and air outlet fan, specifically, the rotation speed of the fan control
Device according to
LEnter=LGo out=QAlways/(Cp*ρ*(TEnter-TGo out)*K*T)
Determine air inlet fan and air outlet fan in adjacent (n+1)th time cycle n-th of time cycle
Rotating speed；Wherein, LEnterRepresent the rotating speed of the air inlet fan, LGo outRepresent the rotating speed of the air outlet fan, QAlwaysRepresent the electricity
Sub- equipment caused total amount of heat, T within n-th of time cycleEnterRepresent the air themperature of the air inlet, TGo outDescribed in expression
The air themperature of air outlet, T represent the time span of n-th of time cycle, CpThe specific heat capacity of air is represented, ρ represents empty
Air tightness, K are the air draft coefficient of the air inlet fan and the air outlet fan.
Fan rotational frequency control method of the embodiment of the present invention, according to input power of the electronic equipment within n-th of time cycle,
Power output calculates caused total amount of heat in the electronic equipment, according to the electronic equipment within n-th of time cycle
Caused total amount of heat, calculate the rotating speed of the air inlet fan and air outlet fan in (n+1)th time cycle.When the electronics
Equipment in (n+1)th time cycle to be rotated more than or equal to the speed of the rotating speed when, you can so that the electronic equipment to be existed
Caused heat all removes in n-th of time cycle, so as to so that the electronic equipment internal reaches thermal balance, prevent temperature
Degree rise., can be with by the accumulation of heat in direct control electronics using fan rotational frequency control method of the embodiment of the present invention
Just rotation speed of the fan is adjusted before temperature rise, it is therefore prevented that electronic equipment works under the high temperature conditions, ensure that electronics
The performance of equipment.Meanwhile using fan rotational frequency control method of the embodiment of the present invention, the air inlet fan and the air-out one's intention as revealed in what one says
During the rotational speed determined described in fan use, you can discharge caused heat in n-th of time cycle, effectively to electronics
Equipment is radiated, and so as to avoid fan from being rotated under too high rotating speed, can save system resource, and reduces electronic equipment fortune
Noise during row, improve the service life of fan.Also, with qualitatively carrying out coarse adjustment to rotation speed of the fan in the prior art
Mode is compared, and according to electronic equipment, the caused total amount of heat within n-th of time cycle determines electronic equipment to the embodiment of the present invention
In the rotation speed of the fan in (n+1)th cycle, accurate rotation speed of the fan value can be obtained, so as to realize the accurate tune to rotation speed of the fan
Section, it is more economical effective compared with prior art.
Fig. 2 is the structural representation of optical projection system of the embodiment of the present invention.In a kind of possible embodiment, the present invention is real
Apply a fan rotational frequency control method and can be used for the optical projection system.
Referring to Fig. 2, the optical projection system includes light source 10, Wavelength converter 20, air inlet fan 30, air-out
One's intention as revealed in what one says fan 40 and fan rotation speed control apparatus 50.The light source 10 is used to launch projection laser, the Wavelength converter
20 light for the projection laser to be converted to different wave length, the fan rotation speed control apparatus 50 are used for the air inlet
The rotating speed of fan 30 and air outlet fan 40 is adjusted.
On the basis of above-described embodiment, the electronic equipment includes light source, and the acquisition electronic equipment exists
Caused total amount of heat in n-th of time cycle, including：
S201：The operating current and operating voltage inputted according to the light source within n-th of time cycle is true
Fixed input power of the light source within n-th of time cycle.
Specifically, the galvanometer and potentiometer being connected with the light source 10 can be set in the optical projection system, used
To measure the operating current of the light source and operating voltage.The galvanometer and the potentiometer will measure obtained work
Electric current and operational voltage value send the fan rotation speed control apparatus to.
S202：According to the operating current of the light source within n-th of time cycle, operating temperature and go out
Luminous power curve determines light power of the light source within n-th of time cycle；The light power curve is used
In the light power and the operating current and the variation relation of the operating temperature that represent the light source.
S203：Existed according to input power of the light source within n-th of time cycle and the light source
Light power in n-th of time cycle, obtain heating work(of the light source within n-th of time cycle
Rate.
S204：According to heating power of the light source within n-th of time cycle, the light source is determined
The caused heat within n-th of time cycle.
Specifically, operating temperature of the light source within n-th of time cycle is by the temperature-sensitive on light source
Measurement obtains resistance in real time.The light power curve is the known song determined according to the hardware specification parameter of the light source
Line.
Fig. 3 is the operating temperature of light source and the variation relation curve synoptic diagram of operating current.Fig. 4 is that light source exists
Light power curve map at a temperature of different operating.
In real work, due to needing to realize the function of dynamic light adjustment, work of the light source in different frame
Electric current is real-time change, it is therefore desirable to which light power of the light source in each frame is calculated.
Referring to Fig. 3, when the operating current of the light source is larger, the operating temperature of the light source can be gradual
Increase.Because the duration of a frame is very short, usually Millisecond in one embodiment of the invention, can will be per frame
The operating temperature of the light source is approximately identical value in duration.Determine light extraction of the light source in each frame
Power, it is only necessary to the light extraction under the operating temperature according to corresponding to the light power curve determines the light source in each frame
Power.
Please refer to Fig. 4, the light power curve map includes a plurality of light power corresponding with different operating temperature
Curve.The corresponding operating temperature of each light power curve.The light power curve map is generally by the life of light source
Business men provides.But due to only including curve corresponding with the operating temperature value of limited quantity in the light power curve map,
The light power under any operating temperature can not be drawn according to the light power curve map.Therefore, in the embodiment of the present invention
In, the light power under any operating temperature is determined by following manner.
Specifically, each time cycle includes m frame, and operating temperature of the light source in the δ frame is Tδ, m
And δ is integer, and 1≤δ≤m；
Operating current, operating temperature and the light extraction work(according to the light source within n-th of time cycle
Rate curve determines light power of the light source within n-th of time cycle, including：
According to
Determine light power of the light source in the δ frame
Wherein, the light power curve include at least two it is corresponding with the different operating temperature of the light source
Curve, TaRepresent to be less than the work temperature in operating temperature value corresponding to the light power curveδAnd with the work temperature
Spend TδIt is worth immediate operating temperature；TbRepresent to be more than the work temperature in operating temperature value corresponding to the light power curve
Spend TδAnd with the work temperatureδIt is worth immediate operating temperature；Represent work of the light source in the δ frame
When making to work under electric current, the work temperatureaCorresponding light power value on corresponding curve；Represent the light source
When being worked under the operating current of the δ frame, the work temperaturebCorresponding light power value on corresponding curve.
The heating power according to the light source within n-th of time cycle, determine the light source
The caused heat within n-th of time cycle, including：
According to
Determine the light source caused heat Q within n-th of time cycleLight δ；Wherein, UδRepresent the light source
Operating voltage of the equipment in the δ frame, IδOperating current of the light source in the δ frame is represented,
Light power of the light source in the δ frame is represented, t represents the duration of each frame, and m represents each week time
The quantity for the frame that phase includes.
Further, on the basis of the various embodiments described above, the electronic equipment also includes：Wavelength converter.
Fan rotational frequency control method of the embodiment of the present invention also includes：
S301：According to light power and wavelength convert dress of the light source within n-th of time cycle
The wavelength conversion efficiency put, determine wavelength convert power of the Wavelength converter within n-th of time cycle；
The wavelength conversion efficiency of the Wavelength converter is determined by the hardware specification parameter of the Wavelength converter
, represent the transfer capability that the Wavelength converter is converted to the laser of input the light of other wavelength.
Fig. 5 is the wavelength conversion efficiency curve synoptic diagram of different Wavelength converters.
Referring to Fig. 5, according to the specification of Wavelength converter the Wavelength converter can be determined in different inputs
Wavelength conversion efficiency value under power.
S302：According to light power and wavelength convert dress of the light source within n-th of time cycle
The wavelength convert power within n-th of time cycle is put, obtains the Wavelength converter in n-th of time cycle
Interior heating power；
Specifically, because the wavelength converter device is the light progress wavelength dress for being exported to the light source
Change, the input power of the Wavelength converter is the power output of the light source, namely the light source goes out
Luminous power.The input power of the Wavelength converter subtracts power output (the i.e. described wavelength turn of the Wavelength converter
Change power), you can obtain the heating power of the Wavelength converter.
S303：According to heating power of the Wavelength converter within n-th of time cycle, the wavelength is determined
Conversion equipment caused heat within n-th of time cycle.
S304：According to the light source, caused heat and the wavelength convert fill within n-th of time cycle
The caused heat within n-th of time cycle is put, determines that the electronic equipment is caused within n-th of time cycle
Heat.
Specifically, the heating power according to the Wavelength converter, determine the Wavelength converter described
Caused heat in n-th of time cycle, including：
According to
Determine the Wavelength converter caused heat Q within n-th of time cycleTurn；Wherein, WHeat turns δRepresent institute
Heating power of the Wavelength converter in the δ frame is stated,Represent light extraction of the light source in the δ frame
Power, N represent efficiency value of the wavelength converter device in the δ frame, and t represents the duration of each frame, and m represents every
The quantity for the frame that the individual time cycle includes.
Embodiment two
Fig. 6 is the circuit theory schematic diagram of fan control device of the embodiment of the present invention.
Referring to Fig. 6, fan rotation speed control apparatus of the embodiment of the present invention, including：
Acquisition module 610, for obtaining the air themperature and air outlet of electronic equipment air inlet within n-th of time cycle
Air themperature and the electronic equipment caused total amount of heat within n-th of time cycle；N is whole more than or equal to 1
Number；
Processing module 620, for according to the electronic equipment within n-th of time cycle caused total amount of heat, institute
The air themperature of fresh air inlet and the air themperature of the air outlet are stated, it is determined that adjacent with n-th of time cycle (n+1)th
The rotating speed of air outlet fan in the individual time cycle；Wherein, the air inlet fan is installed in the air inlet, the air outlet
Fan is installed in the air outlet.
Fan rotation speed control apparatus provided in an embodiment of the present invention, it is defeated within n-th of time cycle according to electronic equipment
Enter power, power output calculates caused total amount of heat in the electronic equipment, according to the electronic equipment in n-th of the time
Caused total amount of heat in cycle, calculate the rotating speed of the air inlet fan and air outlet fan in (n+1)th time cycle.Work as institute
When stating electronic equipment in (n+1)th time cycle to be rotated more than or equal to the speed of the rotating speed, you can with by the electronics
Equipment caused heat in n-th of time cycle all removes, so as to so that the electronic equipment internal reaches thermal balance,
Prevent temperature from raising.Using fan rotation speed control apparatus provided in an embodiment of the present invention, by direct control electronics
Accumulation of heat, just rotation speed of the fan can be adjusted before temperature rise, it is therefore prevented that electronic equipment work under the high temperature conditions
Make, ensure that the performance of electronic equipment.Meanwhile when the air inlet fan and the air outlet fan use rotational speed,
Noise during electronic equipment operation can be reduced, there is provided the service life of fan.
Further, the electronic equipment includes light source；
The processing module 620, is specifically used for：
Described in the operating current and operating voltage inputted according to the light source within n-th of time cycle determines
Input power of the light source within n-th of time cycle；
According to the operating current, operating temperature and light extraction work(of the light source within n-th of time cycle
Rate curve determines light power of the light source within n-th of time cycle；The light power curve is used for table
Show the light power and the operating current and the variation relation of the operating temperature of the light source；
According to input power of the light source within n-th of time cycle and the light source described
Light power in n time cycle, obtain heating power of the light source within n-th of time cycle；
Further, the electronic equipment also includes Wavelength converter；
The processing module 620, is additionally operable to：
According to light power of the light source within n-th of time cycle and the ripple of the Wavelength converter
Long conversion efficiency, determine wavelength convert power of the Wavelength converter within n-th of time cycle；
According to light power of the light source within n-th of time cycle and the Wavelength converter in institute
The wavelength convert power in n-th of time cycle is stated, determines hair of the Wavelength converter within n-th of time cycle
Thermal power；
According to heating power of the Wavelength converter within n-th of time cycle, the wavelength convert is determined
Device caused heat within n-th of time cycle；
According to the light source within n-th of time cycle caused heat and the Wavelength converter in institute
Caused heat in n-th of time cycle is stated, determines the electronic equipment caused total heat within n-th of time cycle
Amount.
Fan rotation speed control apparatus of the embodiment of the present invention controls to perform the rotation speed of the fan of above method embodiment offer
Method, its embodiment and technique effect are similar with embodiment of the method, will not be repeated here.
Embodiment three
Fig. 7 is the schematic flow sheet of the heat dissipating method of optical projection system of the embodiment of the present invention.
Referring to Fig. 7, the embodiment of the present invention also provides a kind of heat dissipating method of optical projection system, including：
S701：Obtain the optical projection system air themperature of air inlet, Air Temperature of air outlet within n-th of time cycle
Degree and the optical projection system caused total amount of heat within n-th of time cycle；N is the integer more than or equal to 1；N is big
In the integer equal to 1；
S702：According to the optical projection system within n-th of time cycle caused total amount of heat, the fresh air inlet sky
The air themperature of temperature degree and the air outlet, it is determined that in (n+1)th time cycle adjacent with n-th of time cycle
The rotating speed of air inlet fan and air outlet fan；Wherein, the air inlet fan is installed in the air inlet, the air outlet
Fan is installed in the air outlet；
S703：According to air inlet fan in (n+1)th time cycle determined and the rotating speed pair of air outlet fan
The optical projection system is radiated.
Specifically, the specific implementation of the heat dissipating method of optical projection system of the embodiment of the present invention and technique effect and above-mentioned side
The fan rotational frequency control method that method embodiment provides is similar, will not be repeated here.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of above-mentioned each method embodiment can lead to
The related hardware of programmed instruction is crossed to complete.Foregoing program can be stored in a computer, mobile phone or other portable units
In read/write memory medium.The program upon execution, execution the step of including above-mentioned each method embodiment；And foregoing storage is situated between
Matter includes：ROM, RAM, magnetic disc or CD etc. are various can be with the medium of store program codes.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, either which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (15)
- A kind of 1. fan rotational frequency control method, it is characterised in that including：Obtain the electronic equipment air themperature of air inlet, the air themperature of air outlet and electricity within n-th of time cycle Sub- equipment caused total amount of heat within n-th of time cycle；N is the integer more than or equal to 1；According to the electronic equipment within n-th of time cycle caused total amount of heat, the air themperature of the fresh air inlet with And the air themperature of the air outlet, it is determined that air intake one's intention as revealed in what one says in (n+1)th time cycle adjacent with n-th of time cycle The rotating speed of fan and air outlet fan；Wherein, the air inlet fan is installed in the air inlet, the air outlet fan installation In in the air outlet；Wherein, it is described according to the electronic equipment within n-th of time cycle caused total amount of heat, the sky of the fresh air inlet The air themperature of temperature degree and the air outlet, it is determined that in (n+1)th time cycle adjacent with n-th of time cycle The rotating speed of air inlet fan and air outlet fan, including：According toLEnter=LGo out=QAlways/(Cp*ρ*(TEnter-TGo out)*K*T)Determine the rotating speed of air inlet fan and air outlet fan in adjacent (n+1)th time cycle n-th of time cycle； Wherein, LEnterRepresent the rotating speed of the air inlet fan, LGo outRepresent the rotating speed of the air outlet fan, QAlwaysRepresent the electronic equipment The caused total amount of heat within n-th of time cycle, TEnterRepresent the air themperature of the air inlet, TGo outRepresent the air outlet Air themperature, T represents the time span of n-th of time cycle, CpThe specific heat capacity of air is represented, ρ represents atmospheric density, K is the air draft coefficient of the air inlet fan and the air outlet fan.
- 2. according to the method for claim 1, it is characterised in that the electronic equipment includes light source, the acquisition institute Electronic equipment caused total amount of heat within n-th of time cycle is stated, including：The operating current and operating voltage inputted according to the light source within n-th of time cycle determines the light source Input power of the equipment within n-th of time cycle；It is bent according to the operating current, operating temperature and light power of the light source within n-th of time cycle Line determines light power of the light source within n-th of time cycle；The light power curve is used to represent institute State the light power and the operating current and the variation relation of the operating temperature of light source；According to input power of the light source within n-th of time cycle and the light source at described n-th Light power in time cycle, obtain heating power of the light source within n-th of time cycle；According to heating power of the light source within n-th of time cycle, determine the light source described n-th Caused heat in the individual time cycle.
- 3. according to the method for claim 2, it is characterised in that each time cycle includes m frame, and the light source exists Operating temperature in the δ frame is Tδ, m and δ are integer, and 1≤δ≤m；Operating current, operating temperature and the light power according to the light source within n-th of time cycle is bent Line determines light power of the light source within n-th of time cycle, including：According to<mrow> <msub> <mi>W</mi> <msub> <mi>T</mi> <mi>&delta;</mi> </msub> </msub> <mo>=</mo> <msub> <mi>W</mi> <msub> <mi>T</mi> <mi>a</mi> </msub> </msub> <mo>+</mo> <mrow> <mo>(</mo> <msub> <mi>W</mi> <msub> <mi>T</mi> <mi>b</mi> </msub> </msub> <mo>-</mo> <msub> <mi>W</mi> <msub> <mi>T</mi> <mi>a</mi> </msub> </msub> <mo>)</mo> </mrow> <mo>*</mo> <mrow> <mo>(</mo> <msub> <mi>T</mi> <mi>&delta;</mi> </msub> <mo>-</mo> <msub> <mi>T</mi> <mi>a</mi> </msub> <mo>)</mo> </mrow> <mo>/</mo> <mrow> <mo>(</mo> <msub> <mi>T</mi> <mi>b</mi> </msub> <mo>-</mo> <msub> <mi>T</mi> <mi>a</mi> </msub> <mo>)</mo> </mrow> </mrow>Determine light power of the light source in the δ frameWherein, the light power curve includes at least two songs corresponding with the different operating temperature of the light source Line, TaRepresent to be less than the work temperature in operating temperature value corresponding to the light power curveδAnd with the operating temperature TδIt is worth immediate operating temperature；TbRepresent to be more than the operating temperature in operating temperature value corresponding to the light power curve TδAnd with the work temperatureδIt is worth immediate operating temperature；Represent work of the light source in the δ frame When being worked under electric current, the work temperatureaCorresponding light power value on corresponding curve；Represent that the light source exists When being worked under the operating current of the δ frame, the work temperaturebCorresponding light power value on corresponding curve.
- 4. according to the method for claim 3, it is characterised in thatThe heating power according to the light source within n-th of time cycle, determine the light source in institute Caused heat in n-th of time cycle is stated, including：According toDetermine the light source caused heat Q within n-th of time cycleLight；Wherein, UδRepresent the light source Operating voltage in the δ frame, IδOperating current of the light source in the δ frame is represented,Represent The light source represents each time cycle bag in the light power of the δ frame, the duration of each frame of t expressions, m The quantity of the frame included.
- 5. the method according to claim 3 or 4, it is characterised in that the electronic equipment also includes Wavelength converter；Institute Stating method also includes：Turned according to the wavelength of light power of the light source within n-th of time cycle and the Wavelength converter Efficiency is changed, determines wavelength convert power of the Wavelength converter within n-th of time cycle；According to light power of the light source within n-th of time cycle and the Wavelength converter described Wavelength convert power in n time cycle, obtain heating work(of the Wavelength converter within n-th of time cycle Rate；According to heating power of the Wavelength converter within n-th of time cycle, the Wavelength converter is determined The caused heat within n-th of time cycle；According to the light source within n-th of time cycle caused heat and the Wavelength converter described Caused heat in n time cycle, determine the electronic equipment caused total amount of heat within n-th of time cycle.
- 6. according to the method for claim 5, it is characterised in that each time cycle includes m frame, and m is more than or equal to 1 Integer；The heating power according to the Wavelength converter within n-th of time cycle, determine the wavelength convert Device caused heat within n-th of time cycle, including：According toDetermine the Wavelength converter caused heat Q within n-th of time cycleTurn；Wherein, WHeat turns δRepresent the ripple Long conversion equipment the δ frame heating power,Light power of the light source in the δ frame is represented, N represents efficiency value of the wavelength converter device in the δ frame, and t represents the duration of each frame, when m represents each Between the quantity of frame that includes of cycle.
- A kind of 7. fan rotation speed control apparatus, it is characterised in that including：Acquisition module, for obtaining electronic equipment air of the air themperature of air inlet and air outlet within n-th of time cycle Temperature and the electronic equipment caused total amount of heat within n-th of time cycle；N is the integer more than or equal to 1；Processing module, for according to the electronic equipment within n-th of time cycle caused total amount of heat, the fresh air inlet Air themperature and the air outlet air themperature, it is determined that the (n+1)th time week adjacent with n-th of time cycle The rotating speed of air outlet fan in phase；Wherein, the air inlet fan is installed in the air inlet, the air outlet fan installation In in the air outlet；Wherein, processing module is specifically used for, according toLEnter=LGo out=QAlways/(Cp*ρ*(TEnter-TGo out)*K*T)Determine the rotating speed of air inlet fan and air outlet fan in adjacent (n+1)th time cycle n-th of time cycle； Wherein, LEnterRepresent the rotating speed of the air inlet fan, LGo outRepresent the rotating speed of the air outlet fan, QAlwaysRepresent the electronic equipment The caused total amount of heat within n-th of time cycle, TEnterRepresent the air themperature of the air inlet, TGo outRepresent the air outlet Air themperature, T represents the time span of n-th of time cycle, CpThe specific heat capacity of air is represented, ρ represents atmospheric density, K is the air draft coefficient of the air inlet fan and the air outlet fan.
- 8. device according to claim 7, it is characterised in that the electronic equipment includes light source；The processing module, is specifically used for：The operating current and operating voltage inputted according to the light source within n-th of time cycle determines the light source Input power of the equipment within n-th of time cycle；It is bent according to the operating current, operating temperature and light power of the light source within n-th of time cycle Line determines light power of the light source within n-th of time cycle；The light power curve is used to represent institute State the light power and the operating current and the variation relation of the operating temperature of light source；According to input power of the light source within n-th of time cycle and the light source at described n-th Light power in time cycle, obtain heating power of the light source within n-th of time cycle；According to heating power of the light source within n-th of time cycle, determine the light source described n-th Caused heat in the individual time cycle.
- 9. device according to claim 8, it is characterised in that the electronic equipment also includes Wavelength converter；The processing module, is additionally operable to：Turned according to the wavelength of light power of the light source within n-th of time cycle and the Wavelength converter Efficiency is changed, determines wavelength convert power of the Wavelength converter within n-th of time cycle；According to light power of the light source within n-th of time cycle and the Wavelength converter described Wavelength convert power in n time cycle, determine heating work(of the Wavelength converter within n-th of time cycle Rate；According to heating power of the Wavelength converter within n-th of time cycle, the Wavelength converter is determined The caused heat within n-th of time cycle；According to the light source within n-th of time cycle caused heat and the Wavelength converter described Caused heat in n time cycle, determine the electronic equipment caused total amount of heat within n-th of time cycle.
- A kind of 10. heat dissipating method of optical projection system, it is characterised in that including：Obtain the optical projection system air themperature of air inlet, the air themperature of air outlet and institute within n-th of time cycle State optical projection system caused total amount of heat within n-th of time cycle；N is the integer more than or equal to 1；N is more than or equal to 1 Integer；According to the optical projection system within n-th of time cycle caused total amount of heat, the air themperature of the fresh air inlet with And the air themperature of the air outlet, it is determined that air intake one's intention as revealed in what one says in (n+1)th time cycle adjacent with n-th of time cycle The rotating speed of fan and air outlet fan；Wherein, the air inlet fan is installed in the air inlet, the air outlet fan installation In in the air outlet；It is to the projection according to the rotating speed of air inlet fan in (n+1)th time cycle determined and air outlet fan System is radiated；Wherein, it is described according to the optical projection system within n-th of time cycle caused total amount of heat, the sky of the fresh air inlet The air themperature of temperature degree and the air outlet, it is determined that in (n+1)th time cycle adjacent with n-th of time cycle The rotating speed of air inlet fan and air outlet fan, including：According toLEnter=LGo out=QAlways/(Cp*ρ*(TEnter-TGo out)*K*T)Determine the rotating speed of air inlet fan and air outlet fan in adjacent (n+1)th time cycle n-th of time cycle； Wherein, LEnterRepresent the rotating speed of the air inlet fan, LGo outRepresent the rotating speed of the air outlet fan, QAlwaysRepresent the optical projection system The caused total amount of heat within n-th of time cycle, TEnterRepresent the air themperature of the air inlet, TGo outRepresent the air outlet Air themperature, T represents the time span of n-th of time cycle, CpThe specific heat capacity of air is represented, ρ represents atmospheric density, K is the air draft coefficient of the air inlet fan and the air outlet fan.
- 11. according to the method for claim 10, it is characterised in that the optical projection system includes light source, the acquisition The optical projection system caused total amount of heat within n-th of time cycle, including：The operating current and operating voltage inputted according to the light source within n-th of time cycle determines the light source Input power of the equipment within n-th of time cycle；It is bent according to the operating current, operating temperature and light power of the light source within n-th of time cycle Line determines light power of the light source within n-th of time cycle；The light power curve is used to represent institute State the light power and the operating current and the variation relation of the operating temperature of light source；According to input power of the light source within n-th of time cycle and the light source at described n-th Light power in time cycle, obtain heating power of the light source within n-th of time cycle；According to heating power of the light source within n-th of time cycle, determine the light source described n-th Caused heat in the individual time cycle.
- 12. according to the method for claim 11, it is characterised in that each time cycle includes m frame, the light source Operating temperature in the δ frame is Tδ, m and δ are integer, and 1≤δ≤m；Operating current, operating temperature and the light power according to the light source within n-th of time cycle is bent Line determines light power of the light source within n-th of time cycle, including：According to<mrow> <msub> <mi>W</mi> <msub> <mi>T</mi> <mi>&delta;</mi> </msub> </msub> <mo>=</mo> <msub> <mi>W</mi> <msub> <mi>T</mi> <mi>a</mi> </msub> </msub> <mo>+</mo> <mrow> <mo>(</mo> <msub> <mi>W</mi> <msub> <mi>T</mi> <mi>b</mi> </msub> </msub> <mo>-</mo> <msub> <mi>W</mi> <msub> <mi>T</mi> <mi>a</mi> </msub> </msub> <mo>)</mo> </mrow> <mo>*</mo> <mrow> <mo>(</mo> <msub> <mi>T</mi> <mi>&delta;</mi> </msub> <mo>-</mo> <msub> <mi>T</mi> <mi>a</mi> </msub> <mo>)</mo> </mrow> <mo>/</mo> <mrow> <mo>(</mo> <msub> <mi>T</mi> <mi>b</mi> </msub> <mo>-</mo> <msub> <mi>T</mi> <mi>a</mi> </msub> <mo>)</mo> </mrow> </mrow>Determine light power of the light source in the δ frameWherein, the light power curve includes at least two songs corresponding with the different operating temperature of the light source Line, TaRepresent to be less than the work temperature in operating temperature value corresponding to the light power curveδAnd with the operating temperature TδIt is worth immediate operating temperature；TbRepresent to be more than the operating temperature in operating temperature value corresponding to the light power curve TδAnd with the work temperatureδIt is worth immediate operating temperature；Represent work of the light source in the δ frame When being worked under electric current, the work temperatureaCorresponding light power value on corresponding curve；Represent that the light source exists When being worked under the operating current of the δ frame, the work temperaturebCorresponding light power value on corresponding curve.
- 13. according to the method for claim 12, it is characterised in thatThe heating power according to the light source within n-th of time cycle, determine the light source in institute Caused heat in n-th of time cycle is stated, including：According toDetermine the light source caused heat Q within n-th of time cycleLight；Wherein, UδRepresent the light source Operating voltage in the δ frame, IδOperating current of the light source in the δ frame is represented,Represent The light source represents each time cycle bag in the light power of the δ frame, the duration of each frame of t expressions, m The quantity of the frame included.
- 14. the method according to claim 12 or 13, it is characterised in that the optical projection system also includes wavelength convert and filled Put；Methods described also includes：Turned according to the wavelength of light power of the light source within n-th of time cycle and the Wavelength converter Efficiency is changed, determines wavelength convert power of the Wavelength converter within n-th of time cycle；According to light power of the light source within n-th of time cycle and the Wavelength converter described Wavelength convert power in n time cycle, obtain heating work(of the Wavelength converter within n-th of time cycle Rate；According to heating power of the Wavelength converter within n-th of time cycle, the Wavelength converter is determined The caused heat within n-th of time cycle；According to the light source within n-th of time cycle caused heat and the Wavelength converter described Caused heat in n time cycle, determine the optical projection system caused total amount of heat within n-th of time cycle.
- 15. according to the method for claim 14, it is characterised in that each time cycle includes m frame, and m is more than or equal to 1 Integer；The heating power according to the Wavelength converter within n-th of time cycle, determine the wavelength convert Device caused heat within n-th of time cycle, including：According toDetermine the Wavelength converter caused heat Q within n-th of time cycleTurn；Wherein, WHeat turns δRepresent the ripple Long conversion equipment the δ frame heating power,Light power of the light source in the δ frame is represented, N represents efficiency value of the wavelength converter device in the δ frame, and t represents the duration of each frame, when m represents each Between the quantity of frame that includes of cycle.
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| CN106255392B (en) * | 2016-09-21 | 2019-11-29 | 珠海格力电器股份有限公司 | Heat dissipation control method, device and system for electrical cabinet |
| CN108266707B (en) * | 2016-12-30 | 2020-11-17 | 深圳光峰科技股份有限公司 | Control method and device for solid-state light-emitting source phase-change refrigeration system and projection equipment |
| CN107978959B (en) * | 2017-12-18 | 2019-09-20 | 深圳市创鑫激光股份有限公司 | Laser and its control method and storage medium |
| CN108594971A (en) * | 2018-02-01 | 2018-09-28 | 联想(北京)有限公司 | control method and control system |
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