CN115113464A - Method and device for controlling rotating speed of projector fan - Google Patents
Method and device for controlling rotating speed of projector fan Download PDFInfo
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- CN115113464A CN115113464A CN202211037630.7A CN202211037630A CN115113464A CN 115113464 A CN115113464 A CN 115113464A CN 202211037630 A CN202211037630 A CN 202211037630A CN 115113464 A CN115113464 A CN 115113464A
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The application discloses a method and a device for controlling the rotating speed of a projector fan, wherein the method comprises the following steps: acquiring a distance parameter of a user relative to a projector and user stay time; if the user residence time meets a first condition, adjusting the rotating speed of the fan according to a preset rule; and if the distance parameter is within the adjusting range and the user residence time meets a second condition, adjusting the rotating speed of the fan to the initial rotating speed. The invention detects the distance of the user relative to the projector and the user staying time in real time through the distance sensor, carries out secondary judgment on the distance and the user staying time, and then detects and adjusts the rotating speed of the fan in real time. The scheme of the invention can quickly adjust the noise of the device and the temperature of the core device, and realizes the balance of temperature performance and noise performance, thereby improving the user experience.
Description
Technical Field
The invention relates to the technical field of projectors, in particular to a method and a device for controlling the rotating speed of a projector fan.
Background
The projecting apparatus can produce a large amount of heats at the during operation ray apparatus, need use the fan to cool down, and the fan during operation can produce the noise, can seriously influence user experience. When the projector is used, the rotating speed of the fan needs to be increased when the temperature is increased generally, and at the moment, the noise of the projector is increased, so that the user experience is not good; in order to reduce noise, the rotation speed of the fan needs to be reduced, and the projector cannot radiate heat well, so that the temperature performance and the noise performance need to be balanced. The existing projector fan control method is difficult to realize the balance of noise performance and heat dissipation performance.
Disclosure of Invention
Therefore, the technical problem to be solved by the present invention is how to achieve the balance between the heat dissipation performance and the noise performance of the projector, so as to improve the user experience, thereby providing a method and an apparatus for controlling the rotation speed of the projector fan.
To solve the above technical problem, the embodiments of the present disclosure at least provide a method and an apparatus for controlling a rotational speed of a projector fan.
In a first aspect, an embodiment of the disclosure provides a method for controlling a rotation speed of a projector fan, including the following steps:
acquiring a distance parameter of a user relative to a projector and user stay time;
if the user residence time meets a first condition, adjusting the rotating speed of the fan according to a preset rule;
and if the distance parameter is within the adjusting range and the user residence time meets a second condition, adjusting the rotating speed of the fan to the initial rotating speed.
Preferably, the distance parameter is acquired by using a distance sensor, and the distance sensor includes a first distance sensor disposed on the left side of the projector, a second distance sensor disposed on the front side of the projector, and a third distance sensor disposed on the right side of the projector.
Preferably, the distance parameter comprises a distance L of the user from the first distance sensor 1 Distance L from the user to the second distance sensor 2 And the distance L from the user to the third distance sensor 3 。
Preferably, the user stay time is a time difference between the current time and the starting time.
Preferably, the preset rule is: when L is min Is less than the first preset distance L 0 When, r = r max ×L min /L 0 (ii) a When L is min R = r at a first preset distance or more max (ii) a Wherein r is max Is the maximum rotational speed of the fan; r is the fan speed; l is min Is L 1 、L 2 And L 3 Minimum value of (1).
Preferably, if the distance L min And if the distance parameter is smaller than a second preset distance, the distance parameter is in the adjusting range, and the second preset distance is the same as or different from the first preset distance.
Preferably, if the user stay time is greater than the first time, the user stay time satisfies a first condition.
Preferably, if the user staying time is longer than a second time, the user staying time satisfies a second condition, and the second time is longer than the first time.
In a second aspect, an embodiment of the present invention further provides a projection apparatus, including: an optical machine, a main board, a CPU, a fan, a heat sink, a housing, a first distance sensor, a second distance sensor, and a third distance sensor, wherein when the projection apparatus is operated, the CPU executes any one of the methods described in the first aspect.
The technical scheme provided by the embodiment of the invention has the following beneficial effects: the distance between the user and the projector and the user residence time are detected in real time through the distance sensor, the distance parameter and the user residence time are secondarily judged, and then the rotating speed of the fan is detected and adjusted in real time, so that the noise of the device and the temperature of a core device can be quickly adjusted, the balance between the temperature performance and the noise performance is realized, and the user experience is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a flow chart illustrating a method for controlling the fan speed of a projector according to a disclosed embodiment of the invention;
FIG. 2 is a schematic diagram illustrating a distance parameter of a method for controlling a fan speed of a projector according to an embodiment of the disclosure;
fig. 3 is a plan view of a projection apparatus according to an embodiment of the disclosure.
1-a first distance sensor; 2-a second distance sensor; 3-a third distance sensor;
4-a radiator; 5-a fan; 6-a housing;
7-a CPU; 8-a main board; 9-light machine.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
Example 1
As shown in fig. 1, a method for controlling a rotational speed of a projector fan according to an embodiment of the disclosure includes the following steps:
s1: starting the projector;
s2: setting the initial rotation speed r of the fan 0 ；
S3: acquiring a distance parameter of a user relative to a projector and user stay time;
s4: judging whether the user residence time meets a first condition, if so, executing S5; if not, executing S9;
s5: adjusting the rotating speed r of the fan according to a preset rule;
s6: judging whether the distance parameter is in the adjusting range, if so, executing S7; if not, executing S9;
s7: judging whether the user staying time meets a second condition, if so, executing S8, and if not, executing S9;
s8: adjusting the rotation speed r of the fan to the initial rotation speed r 0 ；
S9: and finishing the adjustment.
In step S3, the distance parameter is acquired by using distance sensors including a first distance sensor 1 disposed on the left side of the projector, a second distance sensor 2 disposed on the front side of the projector, and a third distance sensor 3 disposed on the right side of the projector. Wherein the distance parameter comprises a distance L from the user to the first distance sensor 1 Distance L from the user to the second distance sensor 2 And the distance L from the user to the third distance sensor 3 。
In step S4, the user staying time is a time difference between the current time and the power-on time.
In step S5, the preset rule is: when L is min Is less than the first preset distance L 0 When, r = r max ×L min /L 0 (ii) a When L is min When the distance is more than or equal to a first preset distance, r = r max (ii) a Wherein r is max Is the maximum rotational speed of the fan; r is the fan speed; l is a radical of an alcohol min Is L 1 、L 2 And L 3 Minimum value of (1).
For example, in a preferred embodiment, the first predetermined distance L 0 1 meter, and the maximum rotating speed of the fan is 3000 r/min; r is the fan speed; when the minimum distance between a user and the distance sensor is 0.7 m, firstly, the maximum rotating speed corresponding to 70% is calculated through a preset rule, then the rotating speed of the fan is adjusted to 70% of the maximum rotating speed to operate, at the moment, the noise heard by the user at the position of 0.7 m is 30dB, the noise belongs to an acceptable range, the temperature of a core device can be reduced by 4 ℃ after the rotating speed is adjusted, the performance of the product can be improved by the reduction of 4 ℃, the use experience of the user is met, if the adjustment is not carried out, the core device is influenced by the temperature rise, and the performance cannot be fully exerted.
In step S6, if the distance L is smaller than the predetermined value min And if the distance parameter is smaller than a second preset distance, the distance parameter is in the adjusting range, and the second preset distance is the same as or different from the first preset distance.
In step S7, if the user staying time is greater than the first time, the user staying time satisfies a first condition; preferably, the first time is 1 minute.
Preferably, the user dwell time satisfies the second condition if the user dwell time is greater than the second time, which in a preferred embodiment is 30 minutes.
In a preferred embodiment, since the use cases of the user distance within 0.5 m are less, the following defining conditions are added:
l is more than or equal to 0.3 m min <0.5 m, judging whether the user stays for more than 1 hour, if so, adjusting the rotating speed of the fan to the initial rotating speed, and avoiding the influence of the long-term low rotating speed on the performance; if not, no adjustment is made;
when L is min <When the rotation speed is 0.3 m, judging whether the residence time of a user is more than 0.5 h, if so, adjusting the rotation speed of the fan to the initial rotation speed, and avoiding the influence of the long-term low rotation speed on the performance in a reasonable time; if not, no adjustment is made.
In this embodiment, the CPU executes the operation to determine the distance parameter and the stay time.
According to the projector fan rotating speed control method, the distance between the user and the projector and the user residence time are detected in real time through the distance sensor, the distance parameter and the user residence time are secondarily judged, and then the fan rotating speed is detected and adjusted in real time, so that the device noise and the core device temperature can be quickly adjusted, the balance between the temperature performance and the noise performance is realized, and the user experience is improved.
Example 2
As shown in fig. 3, an embodiment of the present invention further provides a projector apparatus, including: a first distance sensor 1, a second distance sensor 2, a third distance sensor 3, a heat sink 4, a fan 5, a housing 6, a CPU7, a main board 8, and an optical engine 9.
When the projector works, firstly, the projector is started, and an initial rotating speed of the fan 5 is given; then, detecting the distance parameter of the user relative to the projector and the user stay time by using the first distance sensor 1, the second distance sensor 2 and the third distance sensor 3; judging whether the user residence time meets a first condition, if so, adjusting the rotating speed of the fan according to a preset rule, and if not, not adjusting; and continuously judging whether the distance parameter is in the adjusting range and whether the user residence time meets a second condition, if the distance parameter and the user residence time meet the second condition, adjusting the rotating speed of the fan to the initial rotating speed, and if not, not adjusting.
Preferably, the distance parameter is acquired by means of distance sensors comprising a first distance sensor 1 arranged on the left side of the projector, a second distance sensor 2 on the front side of the projector and a third distance sensor 3 on the right side of the projector. Wherein the distance parameter comprises a distance L from the user to the first distance sensor 1 Distance L from the user to the second distance sensor 2 And the distance L from the user to the third distance sensor 3 。
Preferably, the user staying time is a time difference between the current time and the starting-up time.
Preferably, the preset rule is: when L is min Is less than the first preset distance L 0 When, r = r max ×L min /L 0 (ii) a When L is min R = r at a first preset distance or more max (ii) a Wherein r is max Is the maximum rotational speed of the fan; r is the fan speed; l is min Is L 1 、L 2 And L 3 Minimum value of (1).
For example, in a preferred embodiment, the first predetermined distance L 0 1 meter, and the maximum rotating speed of the fan is 3000 r/min; r is the fan speed; when the minimum distance between a user and the distance sensor is 0.7 m, firstly, the corresponding maximum rotating speed of 70% is calculated through a preset rule, then the rotating speed of the fan is adjusted to 70% of the maximum rotating speed to operate, at the moment, the noise heard by the user at the position of 0.7 m is 30dB, the noise belongs to an acceptable range, the temperature of the core device can be reduced by 4 ℃ after the rotating speed is adjusted at the distance, the product performance can be improved due to the reduction of 4 ℃, the user use experience is met, if the adjustment is not carried out, the core device is influenced by the temperature rise, and the performance cannot be fully exerted.
Preferably, if the distance L min And if the distance parameter is smaller than a second preset distance, the distance parameter is in the adjusting range, and the second preset distance is the same as or different from the first preset distance.
Preferably, if the user stay time is greater than the first time, the user stay time satisfies a first condition; preferably, the first time is 1 minute.
Preferably, the user dwell time satisfies the second condition if the user dwell time is greater than the second time, which in a preferred embodiment is 30 minutes.
In a preferred embodiment, since the use cases of the user distance within 0.5 m are less, the following defining conditions are added:
l is more than or equal to 0.3 m min <0.5 m, judging whether the user stays for more than 1 hour, if so, adjusting the rotating speed of the fan to the initial rotating speed, and avoiding the influence of the long-term low rotating speed on the performance; if not, no adjustment is made;
when L is min <When the rotation speed is 0.3 m, judging whether the residence time of a user is more than 0.5 h, if so, adjusting the rotation speed of the fan to the initial rotation speed, and avoiding the influence of the long-term low rotation speed on the performance in a reasonable time; if not, no adjustment is made.
The projection device of this embodiment, through set up three distance sensor in the projecting apparatus, acquire the distance parameter and the user dwell time of user for the projecting apparatus in real time to do the secondary to distance parameter and user dwell time and judge, then detect fan speed in real time and adjust according to predetermineeing the rule, thereby can adjust device noise and core device temperature fast, in order to realize the balance of temperature performance and noise performance, improved user's experience.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that the terms "first," "second," and the like in the description of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present invention, the meaning of "a plurality" means at least two unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (9)
1. A method for controlling the rotating speed of a projector fan is characterized by comprising the following steps:
acquiring a distance parameter of a user relative to a projector and user stay time;
if the user residence time meets a first condition, adjusting the rotating speed of the fan according to a preset rule;
and if the distance parameter is within the adjusting range and the user residence time meets a second condition, adjusting the rotating speed of the fan to the initial rotating speed.
2. The method as claimed in claim 1, wherein the distance parameter is obtained by a distance sensor, and the distance sensor comprises a first distance sensor disposed at the left side of the projector, a second distance sensor disposed at the front side of the projector, and a third distance sensor disposed at the right side of the projector.
3. The method as claimed in claim 2, wherein the distance parameter includes a distance L from the user to the first distance sensor 1 Distance L from the user to the second distance sensor 2 And use ofDistance L from the user to the third distance sensor 3 。
4. The method as claimed in claim 3, wherein the user staying time is a time difference between a current time of the fan and a turning-on time of the fan.
5. The method of claim 4, wherein the control of the fan speed of the projector,
the preset rule is as follows:
when L is min Is less than the first preset distance L 0 When, r = r max ×L min /L 0 (ii) a When L is min R = r at a first preset distance or more max (ii) a Wherein r is max Is the maximum rotational speed of the fan; r is the fan speed; l is min Is L 1 、L 2 And L 3 Minimum value of (1).
6. The method as claimed in claim 5, wherein if the distance L is less than a predetermined value min And if the distance parameter is smaller than a second preset distance, the distance parameter is in the adjusting range, and the second preset distance is the same as or different from the first preset distance.
7. The method of claim 6, wherein the control of the fan speed is performed by a computer,
and if the user stay time is longer than the first time, the user stay time meets a first condition.
8. The method of claim 7, wherein the control of the fan speed is performed by a computer,
and if the user staying time is longer than a second time, the user staying time meets a second condition, and the second time is longer than the first time.
9. A projection device, comprising: an optical engine, a main board, a CPU, a fan, a heat sink, a housing, a first distance sensor, a second distance sensor, a third distance sensor, wherein when the projection apparatus is operated, the CPU performs the method according to any one of claims 1 to 8.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117331272A (en) * | 2023-10-24 | 2024-01-02 | 深圳欣盛商科技有限公司 | Noise reduction method and device for light path open type projector and light path open type projector |
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| CN110345099A (en) * | 2019-07-18 | 2019-10-18 | 西安易朴通讯技术有限公司 | The method, apparatus and system of server fan speed regulation |
| CN110848164A (en) * | 2019-09-29 | 2020-02-28 | 深圳市火乐科技发展有限公司 | Rotating speed adjusting method and related product thereof |
| CN211236548U (en) * | 2019-12-06 | 2020-08-11 | 深圳市橙子数字科技有限公司 | Projector with a light source |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117331272A (en) * | 2023-10-24 | 2024-01-02 | 深圳欣盛商科技有限公司 | Noise reduction method and device for light path open type projector and light path open type projector |
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