CN112285992A - Projector heat dissipation control method and device, projector and readable storage medium - Google Patents
Projector heat dissipation control method and device, projector and readable storage medium Download PDFInfo
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- CN112285992A CN112285992A CN202011087038.9A CN202011087038A CN112285992A CN 112285992 A CN112285992 A CN 112285992A CN 202011087038 A CN202011087038 A CN 202011087038A CN 112285992 A CN112285992 A CN 112285992A
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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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/3144—Cooling systems
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Abstract
The application discloses a projector heat dissipation control method, a projector heat dissipation control device, a projector and a computer readable storage medium, wherein the projector heat dissipation control method comprises the following steps: respectively acquiring unit temperature changes of the optical machine, the android chip and the DLP chip, and sequentially obtaining rotation speed coefficient vectors of the first fan, the second fan and the third fan; respectively acquiring expected temperature variation of the optical machine, the android chip and the DLP chip; and acquiring the rotation speed variation to be adjusted of the first fan, the second fan and the third fan according to the three expected temperature variation and the three rotation speed coefficient vectors. This application avoids projecting apparatus fan rotational speed to be bigger than normal or less than normal.
Description
Technical Field
The present disclosure relates to the field of projector heat dissipation technologies, and in particular, to a method and an apparatus for controlling heat dissipation of a projector, and a computer-readable storage medium.
Background
With the improvement of the manufacturing process of the projector, the projector is more and more popularized in the scenes of office, family and the like, and the heat dissipation problem of the projector is increasingly prominent. The inside heat dissipation of present traditional projecting apparatus mainly relies on the fan to carry out the forced air cooling heat dissipation to the heat production part, and the inside temperature of projecting apparatus is higher, and the fan speed is big more. However, the heat dissipation requirements and temperatures of different positions in the projector are not equal, the rotating speed of the fan is easy to be larger, and the noise of the fan is large; or the rotating speed of the fan is low, and the temperature of the heat generating part of the projector is too high, so that the heat generating part is easy to damage.
Disclosure of Invention
The embodiments of the present application mainly aim to provide a method and an apparatus for controlling heat dissipation of a projector, and a computer-readable storage medium, which are used to solve the technical problem that the rotation speed of a projector fan is easily too high or too low.
In order to achieve the above object, an embodiment of the present application provides a heat dissipation control method for a projector, where heat generating components of the projector include an optical machine, an android chip, and a Digital Light Processing (DLP) chip, the android chip shares a heat dissipation air duct with the optical machine and the DLP chip, and the optical machine, the android chip, and the DLP chip are respectively provided with a first fan, a second fan, and a third fan for heat dissipation; the heat dissipation control method of the projector comprises the following steps:
respectively acquiring unit temperature changes of the optical machine, the android chip and the DLP chip, and sequentially obtaining rotation speed coefficient vectors of the first fan, the second fan and the third fan;
respectively acquiring expected temperature variation of the optical machine, the android chip and the DLP chip;
and acquiring the rotation speed variation to be adjusted of the first fan, the second fan and the third fan according to the three expected temperature variation and the three rotation speed coefficient vectors.
Optionally, the step of obtaining the variation amounts of the rotation speeds of the first fan, the second fan, and the third fan according to the three expected temperature variation amounts and the three rotation speed coefficient vectors includes:
forming a fan rotation speed coefficient matrix A by the three rotation speed coefficient vectors, and forming a temperature change column vector Y by the three expected temperature change quantities;
forming a rotating speed change column vector X by the rotating speed change quantity to be adjusted of the first fan, the second fan and the third fan;
according to the following formula, X is calculated and obtained,
X＝A-1*Y
wherein, A is a fan rotation speed coefficient matrix, Y is a temperature change column vector, and X is a rotation speed change column vector.
Optionally, after the step of obtaining the variation of the rotation speed of the first fan, the second fan, and the third fan, the method further includes:
correspondingly adjusting the rotating speeds of the first fan, the second fan and the third fan according to the rotating speed variation in the rotating speed variation vector;
detecting whether the temperature variation of the optical machine, the android chip and the DLP chip reaches the expected temperature variation; and if not, executing the step of obtaining the rotation speed variation to be adjusted of the first fan, the second fan and the third fan again according to the three expected temperature variation and the three rotation speed coefficient vectors.
Optionally, the step of respectively obtaining the unit temperature changes of the optical engine, the android chip, and the DLP chip, and sequentially obtaining the rotation speed coefficient vectors of the first fan, the second fan, and the third fan includes:
acquiring a first speed change amount group in which the speed gear change amounts of a first fan, a second fan and a third fan are sequentially arranged in the process of generating unit temperature change of the optical machine;
acquiring a second rotating speed variable quantity group in which rotating speed gear variable quantities of a first fan, a second fan and a third fan are sequentially arranged in the process of unit temperature change of the android chip;
acquiring a third rotating speed variable quantity group in which rotating speed gear variable quantities of a first fan, a second fan and a third fan are sequentially arranged in the process of unit temperature change of a DLP chip;
and forming a matrix by the first rotating speed variable quantity group, the second rotating speed variable quantity group and the third rotating speed variable quantity group to generate a rotating speed coefficient vector.
Optionally, the method for controlling heat dissipation of a projector further includes:
detecting the environmental temperature of the projector installation environment in real time;
when the temperature difference between the environment temperature and the preset temperature is detected to be larger than the preset value, executing the step of respectively acquiring unit temperature changes of the optical machine, the android chip and the DLP chip, and sequentially corresponding to the rotating speed coefficient vectors of the first fan, the second fan and the third fan; taking the ambient temperature at the moment as a new preset temperature; the preset temperature is a factory setting value of the projector or a historical environment temperature.
Optionally, the step of respectively acquiring the expected temperature variation amounts of the optical machine, the android chip and the DLP chip includes:
acquiring the temperature interval bearing range ratio of the optical machine, the android chip and the DLP chip unit which are factory set by the projector;
acquiring a temperature adjustment quantity array which is automatically generated by a projector or input by a user and is used for the optical machine, the android chip and the DLP chip;
and correcting the temperature adjustment quantity array according to the temperature interval bearing range ratio, and respectively acquiring the expected temperature variation of the optical machine, the android chip and the DLP chip.
Optionally, the step of correcting the temperature adjustment quantity array according to the temperature interval tolerance range ratio, and respectively obtaining the expected temperature variation of the optical engine, the android chip, and the DLP chip includes:
correcting the temperature adjustment quantity corresponding to the optical machine in the temperature adjustment quantity array by taking the temperature adjustment quantity corresponding to the android chip and the DLP chip in the temperature adjustment quantity array as an invariant until the ratio of the temperature adjustment quantities of the optical machine, the android chip and the DLP chip is matched with the bearing range ratio of the temperature interval;
and taking each element of the adjusted temperature adjustment quantity array as the expected temperature variation of the optical machine, the android chip and the DLP chip.
In order to achieve the above object, the present application further provides a heat dissipation control device for a projector, where a heat generating component of the projector includes an optical machine, an android chip and a DLP chip, the android chip shares a heat dissipation air duct with the optical machine and the DLP chip, and the optical machine, the android chip and the DLP chip are respectively provided with a first fan, a second fan and a third fan for heat dissipation;
the projector heat dissipation control device includes:
the sensing control module is used for respectively acquiring unit temperature changes of the optical machine, the android chip and the DLP chip, and sequentially corresponding to the rotating speed coefficient vectors of the first fan, the second fan and the third fan;
the data receiving module is used for respectively acquiring the expected temperature variation of the optical machine, the android chip and the DLP chip;
and the fan adjusting module is used for acquiring the rotation speed variable quantity to be adjusted of the first fan, the second fan and the third fan according to the three expected temperature variable quantities and the three rotation speed coefficient vectors.
In order to achieve the above object, the present application further provides a projector, where a heat generating component of the projector includes an optical machine, an android chip and a DLP chip, the android chip shares a heat dissipation air duct with the optical machine and the DLP chip respectively, and the optical machine, the android chip and the DLP chip are respectively provided with a first fan, a second fan and a third fan for heat dissipation;
the projector further includes: the heat dissipation control method comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the computer program realizes the steps of the heat dissipation control method for the projector when being executed by the processor.
To achieve the above object, the present application further provides a readable storage medium, on which a computer program is stored, the computer program, when executed by a processor, implementing the steps of the projector heat dissipation control method as described above.
The method comprises the steps of detecting unit temperature changes of an optical machine, an android chip and a DLP chip (hereinafter referred to as heat-generating three components) in main heat-generating components of the projector, wherein the three components correspond to the rotation speed coefficient of a main heat-radiating fan to form a rotation speed coefficient vector, determining the final expected temperature variation of the heat-generating three components, synthesizing the rotation speed coefficient vector and the expected temperature variation, calculating the rotation speed variation to be adjusted of a first fan, a second fan and a third fan, performing independent rotation speed adjustment based on the rotation speed variation corresponding to the first fan, the second fan and the third fan, wherein the rotation speed variation is obtained by synthesizing the expected temperature variation and the rotation speed coefficient vector of the three heat-generating components, avoiding simply increasing or decreasing the rotation speed of the fan based on the integral temperature or the local temperature of the projector, namely avoiding completely positively correlating the rotation speeds of all the fans with the integral temperature or the local temperature of the, avoid appearing all fan rotational speeds and use the whole temperature of low on the one hand as the benchmark to go the adjustment and lead to the fan rotational speed not enough, the heat dissipation is not enough, heat production part high temperature and damage, avoid appearing all fans and use the local temperature of high on the other hand as the benchmark to go the adjustment and lead to the fan rotational speed too big, fan noise is big on the other hand, this application is independent with the rotational speed adjustment of three fan, three fan rotational speed needn't be transferred high simultaneously or transfer low simultaneously, compromise three fan rotational speed coefficient vector (the rotational speed influences the range to the temperature of three heat dissipation part simultaneously), based on rotational speed coefficient vector and anticipated temperature variation, obtain the rotational speed variation that three fans are respective with the rotational speed of accurate adjustment three fan, avoid projecting apparatus fan rotational speed to be big on the other hand or the.
Drawings
Fig. 1 is a schematic hardware configuration diagram of a projector according to an alternative embodiment of the present application;
fig. 2 is a schematic flow chart of a heat dissipation control method for a projector according to the present application;
fig. 3 is a schematic diagram of functional modules of the heat dissipation control device of the projector according to the present application.
The implementation, functional features and advantages of the objectives of the present application will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for the convenience of description of the present application, and have no specific meaning by themselves. Thus, "module", "component" or "unit" may be used mixedly.
The implementation equipment of the projector heat dissipation control method is a projector, and through temperature measurement and research, the main heat-generating components of the projector are determined to comprise an optical machine, an android chip and a Digital Light Processing (DLP) chip, wherein the optical machine mainly refers to: a DMD (Digital Micromirror Device) display core, a light source, a lens light path, and the like, and the optical engine generally has dustproof and shockproof functions. The android chip is used for operating an android operating system and is one of main heat generating sources of the projector. The DLP chip uses DMD as main shut-down processing element, digitally processes the image signal to be output, and projects the digitally processed light through DMD.
As shown in fig. 1, the projector may include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, a communication bus 1002. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), a touch screen, and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the processor 1001.
Optionally, the projector may further include a camera, RF (Radio Frequency) circuitry, sensors, audio circuitry, a WiFi module, and the like. Among others, sensors such as light sensors and other sensors. Specifically, the light sensor may include an ambient light sensor that adjusts the brightness of the display screen according to the brightness of ambient light, and a proximity sensor that turns off the display screen and/or the backlight when the projector is away from the user.
Those skilled in the art will appreciate that the projector configuration shown in fig. 1 does not constitute a limitation of the projector, and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a kind of computer storage medium, may include therein an operating system, a network communication module, a user interface module, and a projector heat dissipation control program.
In the terminal shown in fig. 1, the network interface 1004 is mainly used for connecting to a backend server and performing data communication with the backend server; the user interface 1003 is mainly used for connecting a client (user side) and performing data communication with the client; and processor 1001 may be configured to invoke a projector heat dissipation control program stored in memory 1005 and perform the following operations:
respectively acquiring unit temperature changes of the optical machine, the android chip and the DLP chip, and sequentially obtaining rotation speed coefficient vectors of the first fan, the second fan and the third fan;
respectively acquiring expected temperature variation of the optical machine, the android chip and the DLP chip;
and acquiring the rotation speed variation to be adjusted of the first fan, the second fan and the third fan according to the three expected temperature variation and the three rotation speed coefficient vectors.
In this application, set up the heat dissipation control system of a plurality of fans for ray apparatus, tall and erect chip of ann and DLP chip in the projecting apparatus, its rotational speed can be adjusted alone to every fan. Through the main heat production device (including ray apparatus, tall and erect chip of ann and DLP chip) in the control projecting apparatus, set for specific speed coefficient to each fan of each heat production device, according to the real-time temperature of heat production device, the fan is according to its self speed coefficient dynamic adjustment rotational speed. When the temperature of the optical machine rises, the rotating speed of each fan is increased according to the corresponding rotating speed coefficient, and when the temperature of the optical machine falls, the rotating speed of each fan is decreased according to the corresponding rotating speed coefficient. Each heat generating device is provided with a main heat radiating fan so as to achieve the aim of uniformly adjusting the rotating speed of each fan due to the temperature rise of a single heat generating component, thereby reducing the noise caused by the average rotating speed rise of the whole fan.
The application provides a heat dissipation control method for a projector, wherein heat-generating components of the projector comprise an optical machine, an android chip and a Digital Light Processing (DLP) chip, the android chip shares a heat dissipation air channel with the optical machine and the DLP chip respectively, and the optical machine and the DLP chip are not in the same heat dissipation air channel, so that the problems of insufficient heat dissipation and overhigh local temperature caused by the fact that the optical machine and the DLP chip generate large heat quantity and are located in the same heat dissipation air channel are avoided;
aiming at that an optical machine, an android chip and a DLP chip are main heat-generating components of a projector, a first fan, a second fan and a third fan which are used for heat dissipation are respectively arranged on the optical machine, the android chip and the DLP chip; the first fan, the second fan and the third fan are respectively arranged in a heat dissipation air channel where the optical machine, the android chip and the DLP chip are located, and air flow speed in the heat dissipation air channel where the optical machine, the android chip and the DLP chip are located is accelerated.
Referring to fig. 2, the projector heat dissipation control method includes: the method comprises the following steps:
step S10, respectively acquiring unit temperature changes of the optical machine, the android chip and the DLP chip, and sequentially obtaining rotation speed coefficient vectors of the first fan, the second fan and the third fan;
set up temperature sensor in ray machine, tall and erect chip of ann and DLP chip mounted position department to detect the real-time temperature of ray machine, tall and erect chip of ann and DLP chip.
The unit temperature can be 1 degree centigrade, obtains ray apparatus temperature respectively and risees or reduces 1 degree centigrade, the rotational speed reduction volume or the volume of rising of first fan, second fan and third fan, and in the same way, obtains tall and erect chip of ann and DLP chip temperature and risees or reduces 1 degree centigrade, the rotational speed reduction volume or the volume of rising of first fan, second fan and third fan. The variation of the fan speed can be standardized to be a speed gear, the three fans have the same specification, and the fan speed is set to be different speed gears, for example, 50 gears are set for each fan, so as to quantify the variation of the fan speed.
Specifically, step S10 may include:
step A1, in the process of unit temperature change of the optical machine, obtaining a first speed change amount group which is formed by sequentially arranging the speed gear change amounts of a first fan, a second fan and a third fan;
step A2, acquiring a second rotating speed variable quantity group formed by sequentially arranging rotating speed gear variable quantities of a first fan, a second fan and a third fan in the process of unit temperature change of the android chip;
step A3, acquiring a third rotating speed variable quantity group formed by sequentially arranging rotating speed gear variable quantities of a first fan, a second fan and a third fan in the process of unit temperature change of a DLP chip;
when confirming the first speed gear change volume group of ray apparatus, confirm the initial temperature of ray apparatus earlier, adjust the rotational speed gear of first fan, second fan and third fan one by one to synchronous detection ray apparatus's real-time temperature, when the difference of real-time temperature and initial temperature is 1 degree centigrade, confirm and acquire the rotational speed gear change volume of first fan, second fan and third fan, the rotational speed gear change volume of three fans constitutes the first speed gear change volume group that the ray apparatus corresponds jointly this moment. Similarly, a third rotating speed variation group corresponding to a second rotating speed variation group DLP chip corresponding to the android chip can be solved, and the rotating speed gear variation of the first fan, the second fan and the third fan can be dynamically and rapidly determined.
And step A4, forming a matrix by the first rotation speed variation group, the second rotation speed variation group and the third rotation speed variation group to generate a rotation speed coefficient vector.
To aid in understanding the above steps a1 through a4, specific examples are explained below:
assume that the first fan mainly dissipating heat of the optical engine is x1, the second fan mainly dissipating heat of the android chip is x2, and the third fan mainly dissipating heat of the DLP chip is x 3. The initial temperature of the heat generating component is T1, the real-time temperature is T2, the variation of the rotation speed of the first fan is n (x1), the variation of the rotation speed of the second fan is n (x2), and the variation of the rotation speed of the third fan is n (x 3).
Therefore, the heat dissipation relationship of the optical engine corresponding to the first fan, the second fan and the third fan is as follows:
|T2-T1|＝a1*n(x1)+b1*n(x2)+c1*n(x3)
the formula describes a change relation between gear change of three fans and temperature of the optical machine, when the optical machine changes | T2-T1| Celsius degree, the rotating speed of a first fan n (x1) of the optical machine needs to be increased by a gear a1, the rotating speed of a second fan n (x2) of an android chip needs to be increased by a gear b1, and the rotating speed of a third fan n (x3) of a DLP chip needs to be increased by a gear c 1; the gears of the three fans are continuously adjusted until | T2-T1| is 1 degree centigrade, so as to determine values of a1, b1 and c1, for example, actually measured, a1 is 1, b1 is 2, c1 bit is 0, that is, | T2-T1| -1 | -n (x1) +2 | -n (x2), that is, it indicates that the temperature of the light engine changes by 1 degree centigrade, the rotating speed of the first fan n (x1) of the light engine needs to be increased by 1 gear, the rotating speed of the second fan n (x2) of the android chip needs to be increased by 2 gears, and the first rotating speed change amount is | 120 |.
Similarly, the heat dissipation relationship of the android chip corresponding to the first fan, the second fan and the third fan is as follows:
|T2-T1|＝a2*n(x1)+b2*n(x2)+c2*n(x3)
when the android chip changes | T2-T1| Celsius degree, the rotating speed of a first fan n (x1) of the optical machine is required to be increased by a gear a2, the rotating speed of a second fan n (x2) of the android chip is required to be increased by a gear b2, and the rotating speed of a third fan n (x3) of the DLP chip is required to be increased by a gear c 2. For example, it has been found that a2 is 2, b2 is 4, c2 is 1,
that is, | T2-T1| ═ 2 × n (x1) +4 × n (x2) +1 × n (x3), which indicates that the temperature of the optical engine changes by 1 degree, it is necessary to increase the rotation speed of the first fan n (x1) by 2 steps, increase the rotation speed of the second fan n (x2) by 4 steps, increase the rotation speed of the third fan n (x3) by 1 step, and the second rotation speed change set is | 241 |.
In a similar way, the heat dissipation relationship of the DLP chip corresponding to the first fan, the second fan and the third fan is:
|T2-T1|＝a3*n(x1)+b3*n(x2)+c3*n(x3)
when the DLP chip changes from | T2 to T1| Celsius degree, the rotating speed of the first fan n (x1) of the optical machine is required to be increased by a gear a3, the rotating speed of the second fan n (x2) of the android chip is required to be increased by a gear b3, and the rotating speed of the third fan n (x3) of the DLP chip is required to be increased by a gear c 3. For example, a3 is found to be 0, b3 is found to be 1, c3 is found to be 1,
that is, | T2-T1| ═ 0 × n (x1) +1 × n (x2) +1 × n (x3), which indicates that the temperature of the optical engine changes by 1 degree, and it is necessary to raise the rotation speed of the second fan n (x2) by 1 gear, and raise the rotation speed of the third fan n (x3) by 1 gear, and the third rotation speed change amount group is | 011 |.
Furthermore, since the first rotational speed variation set is | 120 |, the second rotational speed variation set is | 241 |, and the third rotational speed variation set is | 011 |, the rotational speed coefficient vectorIs composed of
Step S20, acquiring expected temperature variation of the optical machine, the android chip and the DLP chip respectively;
the temperature control instructions for the optical machine, the android chip and the DLP chip in the projector can be from a processor of the projector, for example, the processor detects that the temperature of the optical machine and the android chip of the projector is too high, and the temperature of the optical machine and the android chip needs to be reduced, that is, the processor sends an instruction to generate an expected temperature variation (which is a negative value and indicates that the temperature needs to be reduced) of the optical machine and the android chip, for example, the expected temperature variation of the optical machine is-6 ℃, and the expected temperature variation of the android chip is-2 ℃. In addition, the expected temperature variation may be generated by a control instruction input by a user, for example, the expected temperature variation of the optical machine, the android chip and the DLP chip input by the user is 6 ℃, 2 ℃ and 2 ℃.
Specifically, step S20 includes:
step B1, acquiring the temperature interval bearing range ratio of the optical machine, the android chip and the DLP chip unit which are factory-set by the projector;
the temperature interval bearing range refers to an extreme temperature interval that the component can bear without being damaged, for example, the temperature interval bearing range of the optical machine is 90 ℃, the temperature interval bearing range of the android chip is 30 ℃, the temperature interval bearing range of the DLP chip is 30 ℃, and the temperature interval bearing range ratio of the optical machine, the android chip and the DLP chip is 3:1: 1. The temperature range ratio is generally set on a memory chip or a memory of the projector when the projector is shipped.
Step B2, acquiring a temperature adjustment quantity array of the optical machine, the android chip and the DLP chip automatically generated by the projector or input by a user;
the temperature adjustment quantity array is the initial expected temperature variation quantity of the optical machine, the android chip and the DLP chip generated by the projector processor initially or input by a user, and the three initial expected temperature variation quantities form the temperature adjustment quantity array.
And step B3, correcting the temperature adjustment quantity array according to the temperature interval bearing range ratio, and respectively acquiring the expected temperature variation of the optical machine, the android chip and the DLP chip.
Analyzing a temperature adjustment quantity array formed by three initial expected temperature variation quantities, acquiring an initial ratio of each initial expected temperature variation quantity, continuously correcting each initial expected temperature variation quantity to enable the initial ratio to be continuously close to a temperature interval bearing range ratio, for example, the initial ratio is 3.2:1:1, the temperature interval bearing range ratio is 3:1:1, reducing the initial expected temperature variation quantity of the optical machine until the initial ratio is 3:1:1, taking the initial expected temperature variation quantity of the optical machine as a final expected temperature variation quantity, and taking the initial expected temperature variation quantity of the android chip and the DLP chip as a final expected temperature variation quantity. Therefore, the proportion relation between the final expected temperature change amount and the temperature interval bearing range ratio are adapted, the temperature change of the optical machine, the android chip and the DLP chip is adjusted based on the final expected temperature change amount, the temperature change of a certain heat-generating component cannot exceed the temperature interval bearing range, and the temperature of each heat-generating component is accurately adjusted while the heat of each heat-generating component is guaranteed not to be damaged due to high temperature.
And step S30, acquiring the rotation speed variation to be adjusted of the first fan, the second fan and the third fan according to the three expected temperature variation and the three rotation speed coefficient vectors.
Specifically, three rotation speed coefficient vectors form a fan rotation speed coefficient matrix A, and three expected temperature variation quantities form a temperature variation column vector Y; forming a rotating speed change column vector X by the rotating speed change quantity to be adjusted of the first fan, the second fan and the third fan;
according to the following formula, X is calculated and obtained,
X＝A-1*Y
wherein, A is a fan rotation speed coefficient matrix, Y is a temperature change column vector, and X is a rotation speed change column vector.
To assist in understanding, in a detailed embodiment of the straightforward step S10, the correspondence between the temperatures of the first fan, the second fan, and the third fan and the three heat generating components (optical engine, android chip, and DLP chip) is as shown in table 1:
TABLE 1
According to the numerical relationship of table 1, the following set of equations is obtained:
Y1＝1*n(x1)+2*n(x2)
Y2＝2*n(x1)+4*n(x2)+1*n(x3)
Y3＝1*n(x2)+1*n(x3)
note the book
Is a matrix of a system of fan speeds,
in order to change the column vector for the rotation speed,
for a temperature-varying column vector, the system of equations may be written as Y ═ AX, and thus solved to X ═ A-1Y。
Inverse matrix of A
Thus, the
Because the temperature range bearing range ratio of the optical machine, the android chip and the DLP chip is 3:1:1, if the optical machine, the android chip and the DLP chip need to be respectively reduced by 3 ℃, 1 ℃ and 1 ℃ according to the temperature of the projector, the temperature of the optical machine, the android chip and the DLP chip are respectively reduced by 3 ℃, 1 ℃ and 1 DEG, and then the optical machine, the android chip and the DL
Get it solved
Namely, the variation of the rotating speed is as follows: the rotating speed of the first fan is reduced by 9 gears, and the rotating speed of the second fan is increased by 6 gearsAnd the third fan lowers the 5 th gear.
In this embodiment, the unit temperature changes of the optical machine, the android chip and the DLP chip (hereinafter referred to as heat generating three components) in the main heat generating components of the projector are detected, the three components correspond to the rotation speed coefficient of the main heat radiating fan to form a rotation speed coefficient vector, the final expected temperature variation of the heat generating three components is determined, the rotation speed coefficient vector and the expected temperature variation are integrated, the rotation speed variation to be adjusted of the first fan, the second fan and the third fan is calculated, independent rotation speed adjustment is performed based on the rotation speed variations corresponding to the first fan, the second fan and the third fan, the rotation speed variation is obtained by integrating the expected temperature variation and the rotation speed coefficient vector of the heat generating three components, the increase or decrease of the rotation speed of the fan based on the overall temperature or the local temperature of the projector is avoided, that is to avoid the complete positive correlation between the rotation speeds of all the fans and the overall temperature or the local temperature, avoid appearing all fan rotational speeds and use the whole temperature of low on the one hand as the benchmark to go the adjustment and lead to the fan rotational speed not enough, the heat dissipation is not enough, heat production part high temperature and damage, avoid appearing all fans and use the local temperature of high on the other hand as the benchmark to go the adjustment and lead to the fan rotational speed too big, fan noise is big on the other hand, this application is independent with the rotational speed adjustment of three fan, three fan rotational speed needn't be transferred high simultaneously or transfer low simultaneously, compromise three fan rotational speed coefficient vector (the rotational speed influences the range to the temperature of three heat dissipation part simultaneously), based on rotational speed coefficient vector and anticipated temperature variation, obtain the rotational speed variation of three fan respective with the rotational speed of accurate adjustment three fan, avoid projecting apparatus fan rotational speed to be big on the other hand or.
Further, in another embodiment of the method for controlling heat dissipation of a projector according to the present application, after obtaining the variation amounts of the rotational speeds of the first fan, the second fan, and the third fan in step S30, the method further includes:
step C1, correspondingly adjusting the rotation speeds of the first fan, the second fan and the third fan according to the rotation speed variation in the rotation speed variation vector;
step C2, detecting whether the temperature variation of the optical machine, the android chip and the DLP chip reaches the expected temperature variation; if not, the step of obtaining the rotation speed variation to be adjusted of the first fan, the second fan and the third fan according to the three expected temperature variation and the three rotation speed coefficient vectors is executed again.
After the rotating speed variable quantities of the three fans are analyzed and obtained, rotating speed gears of the first fan, the second fan and the third fan are correspondingly adjusted based on the rotating speed variable quantities, whether the temperature variable quantities of the optical machine, the android chip and the DLP chip reach expected temperature variable quantities or not is continuously detected after adjustment, if the temperature variable quantities of the optical machine, the android chip and the DLP chip reach the expected temperature variable quantities, the adjustment of the rotating speed gears of the three fans based on the rotating speed variable quantities is effective, and the three heat dissipation components reach the expected temperature variable quantities; if the temperature variation of the optical machine, the android chip and the DLP chip does not reach the expected temperature variation, the adjustment of the three fan rotating speed gears based on the rotating speed variation is invalid, the three heat dissipation components do not reach the expected temperature variation, the step S30 is executed again, the rotating speed variations of the three fans are recalculated, and the rotating speed gears of the three fans are adjusted again. If step S30 is executed again, it is still determined that the temperature variation of the optical engine, the android chip, and the DLP chip does not reach the expected temperature variation, which indicates that the heat dissipation channel of the projector may be blocked, and the projector outputs an early warning tone. This embodiment verifies the validity of the rotational speed variation who obtains, can carry out the acquisition flow of rotational speed variation again when invalid, if it is invalid to detect the rotational speed variation again, then outputs the early warning prompt tone, improves the accuracy of fan rotational speed adjustment.
In addition, the projector heat dissipation control method further includes:
detecting the environmental temperature of the projector installation environment in real time; when the temperature difference between the detected environment temperature and the preset temperature is larger than the preset value, executing the step of respectively acquiring unit temperature changes of the optical machine, the android chip and the DLP chip, and sequentially corresponding to the rotation speed coefficient vectors of the first fan, the second fan and the third fan; taking the ambient temperature at the moment as a new preset temperature; the preset temperature is a factory setting value of the projector or a historical environment temperature.
When the temperature difference between the current environment temperature and the preset temperature is detected to be greater than a preset value, which indicates that the temperature deviation between the environment temperature and the preset temperature is large, and the preset temperature is the reference environment temperature of the rotating speed system vectors of the three fans of the current projector, which indicates that the current environment temperature is not matched with the current rotating speed system vector, the step S10 is executed again to obtain a rotating speed coefficient vector based on the current environment temperature as the reference, at this time, the current environment temperature is used as the new preset temperature, namely, the preset temperature is the environment temperature (namely, the historical environment temperature) of the rotating speed system vector obtained last time, and if the historical environment temperature is empty, the preset temperature is the factory setting value (such as 25 ℃) of the projector. Based on the above process, the method and the device ensure that the rotation speed coefficient vector of the computer is re-calculated at different environmental temperatures, remove the interference influence of the environmental temperature on the rotation speed system vector detection, and further improve the accuracy of the rotation speed system vector calculation.
Further, in another embodiment of the method for controlling heat dissipation of a projector according to the present application, the step B3 corrects the temperature adjustment quantity array according to a temperature interval bearing range ratio, and the step of respectively obtaining expected temperature variation quantities of the optical machine, the android chip, and the DLP chip includes:
correcting the temperature adjustment quantity corresponding to the optical machine in the temperature adjustment quantity array by taking the temperature adjustment quantity corresponding to the android chip and the DLP chip in the temperature adjustment quantity array as an invariant until the ratio of the temperature adjustment quantities of the optical machine, the android chip and the DLP chip is matched with the bearing range ratio of the temperature interval; and taking each element of the adjusted temperature adjustment quantity array as the expected temperature variation of the optical machine, the android chip and the DLP chip.
When the temperature adjustment quantity group is corrected based on the temperature interval bearing range ratio, the temperature adjustment quantities corresponding to the android chip and the DLP chip in the temperature adjustment quantity group are preferably used as invariant, namely the temperature adjustment quantities corresponding to the android chip and the DLP chip are kept unchanged, only the temperature adjustment quantity corresponding to the optical machine is adjusted until the temperature adjustment quantity ratio of the optical machine, the android chip and the DLP chip is equal to the temperature interval bearing range ratio, for example, the initial ratio is 3.2:1:1, the temperature interval bearing range ratio is 3:1:1, and the initial expected temperature variation quantity of the optical machine is reduced until the initial ratio is 3:1: 1. Because the temperature interval of the optical machine bears a large range, the temperature adjustment amount of the optical machine is only adjusted and is not easy to exceed the temperature interval bearing range. If the temperature adjustment amounts of the android chip and the DLP chip are not equal, the temperature adjustment amounts of the android chip and the DLP chip are adjusted to the average value of the two, and then the temperature adjustment amount of the optical machine is adjusted, for example, the initial ratio is 3.2:0.9:1.1, the bearing range ratio of the temperature interval is 3:1:1, the initial expected temperature variation amount of the optical machine is reduced, the initial expected temperature variation amount of the android chip is increased, and the initial expected temperature variation amount of the DLP chip is reduced until the initial ratio is 3:1: 1. Therefore, the embodiment realizes the correction of the temperature adjustment quantity array according to the bearing range ratio of the temperature interval in a simple and feasible temperature adjustment quantity correction mode.
The application also provides a projector heat dissipation control device, referring to fig. 3, heat-generating components of the projector comprise an optical machine, an android chip and a DLP chip, the android chip shares a heat dissipation air duct with the optical machine and the DLP chip respectively, and the optical machine, the android chip and the DLP chip are respectively provided with a first fan, a second fan and a third fan which are used for heat dissipation;
the projector heat dissipation control device includes:
the sensing control module is used for respectively acquiring unit temperature changes of the optical machine, the android chip and the DLP chip, and sequentially corresponding to the rotating speed coefficient vectors of the first fan, the second fan and the third fan;
the data receiving module is used for respectively acquiring the expected temperature variation of the optical machine, the android chip and the DLP chip;
and the fan adjusting module is used for acquiring the rotation speed variable quantity to be adjusted of the first fan, the second fan and the third fan according to the three expected temperature variable quantities and the three rotation speed coefficient vectors.
The application also provides a projector, wherein a heat generating component of the projector comprises an optical machine, an android chip and a DLP chip, the android chip shares a heat dissipation air channel with the optical machine and the DLP chip respectively, and the optical machine, the android chip and the DLP chip are respectively provided with a first fan, a second fan and a third fan which are used for heat dissipation;
the projector further includes: the heat dissipation control method comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the computer program realizes the steps of the heat dissipation control method for the projector when being executed by the processor.
The present application also provides a readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the projector heat dissipation control method as described above.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the recitation of an element by the phrase "comprising an … …" does not exclude the presence of additional like elements in the process, method, article, or apparatus that comprises the element, and further, where similarly-named elements, features, or elements in different embodiments of the disclosure may have the same meaning, or may have different meanings, that particular meaning should be determined by their interpretation in the embodiment or further by context with the embodiment.
It should be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope herein. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context. Also, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes" and/or "including," when used in this specification, specify the presence of stated features, steps, operations, elements, components, items, species, and/or groups, but do not preclude the presence, or addition of one or more other features, steps, operations, elements, components, species, and/or groups thereof. The terms "or" and/or "as used herein are to be construed as inclusive or meaning any one or any combination. Thus, "A, B or C" or "A, B and/or C" means "any of the following: a; b; c; a and B; a and C; b and C; A. b and C ". An exception to this definition will occur only when a combination of elements, functions, steps or operations are inherently mutually exclusive in some way.
It should be understood that, although the steps in the flowcharts in the embodiments of the present application are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and may be performed in other orders unless explicitly stated herein. Moreover, at least some of the steps in the figures may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, in different orders, and may be performed alternately or at least partially with respect to other steps or sub-steps of other steps.
It should be noted that step numbers such as S10 and S20 are used herein for the purpose of more clearly and briefly describing the corresponding content, and do not constitute a substantial limitation on the sequence, and those skilled in the art may perform S20 first and then S10 in specific implementation, which should be within the scope of the present application.
The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present application.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A heat dissipation control method of a projector is characterized in that heat generating components of the projector comprise an optical machine, an android chip and a Digital Light Processing (DLP) chip, the android chip shares a heat dissipation air duct with the optical machine and the DLP chip respectively, and the optical machine, the android chip and the DLP chip are provided with a first fan, a second fan and a third fan which are used for heat dissipation respectively; the heat dissipation control method of the projector comprises the following steps:
respectively acquiring unit temperature changes of the optical machine, the android chip and the DLP chip, and sequentially obtaining rotation speed coefficient vectors of the first fan, the second fan and the third fan;
respectively acquiring expected temperature variation of the optical machine, the android chip and the DLP chip;
and acquiring the rotation speed variation to be adjusted of the first fan, the second fan and the third fan according to the three expected temperature variation and the three rotation speed coefficient vectors.
2. The method as claimed in claim 1, wherein the step of obtaining the variation of the rotation speed of the first fan, the second fan and the third fan according to the three expected temperature variations and the three rotation speed coefficient vectors comprises:
forming a fan rotation speed coefficient matrix A by the three rotation speed coefficient vectors, and forming a temperature change column vector Y by the three expected temperature change quantities;
forming a rotating speed change column vector X by the rotating speed change quantity to be adjusted of the first fan, the second fan and the third fan;
according to the following formula, X is calculated and obtained,
X＝A-1*Y
wherein, A is a fan rotation speed coefficient matrix, Y is a temperature change column vector, and X is a rotation speed change column vector.
3. The projector heat dissipation control method as claimed in claim 2, further comprising, after the step of obtaining the amounts of change in the rotational speeds of the first fan, the second fan, and the third fan, the step of:
correspondingly adjusting the rotating speeds of the first fan, the second fan and the third fan according to the rotating speed variation in the rotating speed variation vector;
detecting whether the temperature variation of the optical machine, the android chip and the DLP chip reaches the expected temperature variation; and if not, executing the step of obtaining the rotation speed variation to be adjusted of the first fan, the second fan and the third fan again according to the three expected temperature variation and the three rotation speed coefficient vectors.
4. The projector heat dissipation control method according to claim 2 or 3, wherein the step of obtaining the rotation speed coefficient vectors of the optical engine, the android chip, and the DLP chip in the unit temperature variation sequentially with respect to the first fan, the second fan, and the third fan includes:
acquiring a first speed change amount group in which the speed gear change amounts of a first fan, a second fan and a third fan are sequentially arranged in the process of generating unit temperature change of the optical machine;
acquiring a second rotating speed variable quantity group in which rotating speed gear variable quantities of a first fan, a second fan and a third fan are sequentially arranged in the process of unit temperature change of the android chip;
acquiring a third rotating speed variable quantity group in which rotating speed gear variable quantities of a first fan, a second fan and a third fan are sequentially arranged in the process of unit temperature change of a DLP chip;
and forming a matrix by the first rotating speed variable quantity group, the second rotating speed variable quantity group and the third rotating speed variable quantity group to generate a rotating speed coefficient vector.
5. The projector heat dissipation control method according to claim 4, further comprising:
detecting the environmental temperature of the projector installation environment in real time;
when the temperature difference between the environment temperature and the preset temperature is detected to be larger than the preset value, executing the step of respectively acquiring unit temperature changes of the optical machine, the android chip and the DLP chip, and sequentially corresponding to the rotating speed coefficient vectors of the first fan, the second fan and the third fan; taking the ambient temperature at the moment as a new preset temperature; the preset temperature is a factory setting value of the projector or a historical environment temperature.
6. The projector heat dissipation control method according to claim 5, wherein the step of respectively acquiring the expected temperature change amounts of the optical machine, the android chip and the DLP chip comprises:
acquiring the temperature interval bearing range ratio of the optical machine, the android chip and the DLP chip unit which are factory set by the projector;
acquiring a temperature adjustment quantity array which is automatically generated by a projector or input by a user and is used for the optical machine, the android chip and the DLP chip;
and correcting the temperature adjustment quantity array according to the temperature interval bearing range ratio, and respectively acquiring the expected temperature variation of the optical machine, the android chip and the DLP chip.
7. The method as claimed in claim 6, wherein the step of correcting the temperature adjustment quantity array according to the temperature interval tolerance range ratio and obtaining the expected temperature variation quantities of the optical engine, the android chip and the DLP chip respectively comprises:
correcting the temperature adjustment quantity corresponding to the optical machine in the temperature adjustment quantity array by taking the temperature adjustment quantity corresponding to the android chip and the DLP chip in the temperature adjustment quantity array as an invariant until the ratio of the temperature adjustment quantities of the optical machine, the android chip and the DLP chip is matched with the bearing range ratio of the temperature interval;
and taking each element of the adjusted temperature adjustment quantity array as the expected temperature variation of the optical machine, the android chip and the DLP chip.
8. A heat dissipation control device of a projector is characterized in that heat generating components of the projector comprise an optical machine, an android chip and a DLP chip, the android chip shares a heat dissipation air channel with the optical machine and the DLP chip respectively, and the optical machine, the android chip and the DLP chip are provided with a first fan, a second fan and a third fan which are used for heat dissipation respectively;
the projector heat dissipation control device includes:
the sensing control module is used for respectively acquiring unit temperature changes of the optical machine, the android chip and the DLP chip, and sequentially corresponding to the rotating speed coefficient vectors of the first fan, the second fan and the third fan;
the data receiving module is used for respectively acquiring the expected temperature variation of the optical machine, the android chip and the DLP chip;
and the fan adjusting module is used for acquiring the rotation speed variable quantity to be adjusted of the first fan, the second fan and the third fan according to the three expected temperature variable quantities and the three rotation speed coefficient vectors.
9. A projector is characterized in that a heat-generating component of the projector comprises an optical machine, an android chip and a DLP chip, wherein the android chip shares a heat-dissipation air channel with the optical machine and the DLP chip respectively, and the optical machine, the android chip and the DLP chip are respectively provided with a first fan, a second fan and a third fan which are used for dissipating heat;
the projector further includes: a memory, a processor and a computer program stored on the memory and executable on the processor, the computer program when executed by the processor implementing the steps of the projector heat dissipation control method as claimed in any one of claims 1 to 7.
10. A readable storage medium, characterized in that the readable storage medium has stored thereon a computer program which, when executed by a processor, implements the steps of the projector heat dissipation control method according to any one of claims 1 to 7.
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