Projector control method and apparatus, projector, and storage medium

Abstract

The application belongs to the technical field of electronic equipment control, and discloses a projector control method and device, a projector and a storage medium. The application detects whether wind force is generated at the air outlet of the projector; if yes, a lens opening signal is generated; and the lens opening signal is sent to a lens control motor to control the opening of the lens cover. Since it can be determined that the projector is starting up or in a working state if wind force is detected at the air outlet of the projector, the lens cover is controlled to open at this time, which avoids the opening of the lens cover in a non-use state of the projector, and can effectively prevent dust from entering the lens and foreign objects from damaging the lens.

Description

Technical Field

[0001] This invention relates to the field of electronic device control technology, and in particular to a projector control method, device, projector, and storage medium. Background Technology

[0002] Nowadays, with the development of technology, projectors are being used more and more widely. In projectors, the lens is an extremely valuable and fragile component. Dust entering the lens can even directly lead to lens damage, requiring replacement. Ensuring that dust does not enter the lens during projector operation is a major challenge.

[0003] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is prior art. Summary of the Invention

[0004] The main objective of this invention is to provide a projector control method, device, projector, and storage medium, aiming to solve the technical problem of avoiding dust ingress into the projector lens in the prior art.

[0005] To achieve the above objectives, the present invention provides a projector control method, the method comprising the following steps:

[0006] Check if there is airflow at the projector's air outlet;

[0007] If so, then generate a lens-on signal;

[0008] The lens opening signal is sent to the lens control motor to control the lens cap to open.

[0009] Optionally, a wind pressure sensor is installed at the air outlet of the projector;

[0010] The step of detecting whether wind is generated at the air outlet of the projector includes:

[0011] If a wind pressure detection signal is received from the wind pressure sensor, it is determined that wind force is detected at the air outlet of the projector.

[0012] Optionally, the step of determining that wind force is detected at the air outlet of the projector if a wind pressure detection signal is received from the wind pressure sensor includes:

[0013] If a wind pressure detection signal is received from the wind pressure sensor, the wind pressure intensity is read from the wind pressure detection signal;

[0014] The wind pressure intensity is compared with a preset intensity threshold.

[0015] If the wind pressure intensity is greater than a preset intensity threshold, it is determined that wind force is detected at the air outlet of the projector.

[0016] Optionally, after the step of comparing the wind pressure intensity with a preset intensity threshold, the method further includes:

[0017] If the wind pressure intensity is less than or equal to a preset intensity threshold, then obtain the current time.

[0018] The next detection time is generated based on the current time and the preset detection interval.

[0019] If the system reaches the re-detection time, the wind pressure intensity is read from the wind pressure sensor, and the process returns to the step of comparing the wind pressure intensity with a preset intensity threshold.

[0020] Optionally, after the step of sending the lens opening signal to the lens control motor to control the lens cap opening, the method further includes:

[0021] If a wind stop signal is received from the wind pressure sensor, a lens shut-off signal is generated.

[0022] The lens closing signal is sent to the lens control motor to control the lens cap to close.

[0023] Optionally, after the step of sending the lens opening signal to the lens control motor to control the lens cap opening, the method further includes:

[0024] When a projector shutdown signal is detected, a lens shutdown signal is generated;

[0025] The lens closing signal is sent to the lens control motor to control the lens cap to close;

[0026] When the lens cover is closed, the projector is controlled to perform a power-off operation.

[0027] Optionally, before the step of controlling the projector to perform a power-off operation after the lens cover is closed, the method further includes:

[0028] Obtain the signal transmission time of the lens off signal;

[0029] The lens detection time is determined based on the signal transmission time.

[0030] If the system reaches the lens detection time, the open / closed state of the lens cover is obtained.

[0031] If the opening / closing state is closed, then the lens cap is determined to be closed.

[0032] Furthermore, to achieve the above objectives, the present invention also proposes a projector control device, which includes the following modules:

[0033] The air outlet detection module is used to detect whether airflow is generated at the air outlet of the projector;

[0034] The signal generation module is used to generate a lens-on signal if the condition is met.

[0035] The lens control module is used to send the lens opening signal to the lens control motor to control the lens cap to open.

[0036] In addition, to achieve the above objectives, the present invention also proposes a projector, the projector comprising: a processor, a memory, and a projector control program stored in the memory and executable on the processor, wherein the projector control program, when executed by the processor, implements the steps of the projector control method as described above.

[0037] Furthermore, to achieve the above objectives, the present invention also proposes a computer-readable storage medium storing a projector control program, wherein the projector control program, when executed, implements the steps of the projector control method as described above.

[0038] This invention detects whether airflow is occurring at the projector's air outlet; if so, it generates a lens opening signal and sends this signal to the lens control motor to open the lens cover. Since detecting airflow at the projector's air outlet indicates that the projector is powered on or in operation, opening the lens cover at this time prevents it from opening when the projector is not in use, effectively preventing dust from entering the lens and protecting it from damage by foreign objects. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the structure of a projector in the hardware operating environment involved in the embodiments of the present invention;

[0040] Figure 2 This is a flowchart illustrating the first embodiment of the projector control method of the present invention;

[0041] Figure 3 This is a flowchart illustrating the second embodiment of the projector control method of the present invention;

[0042] Figure 4 This is a flowchart illustrating the third embodiment of the projector control method of the present invention;

[0043] Figure 5 This is a structural block diagram of the first embodiment of the projector control device of the present invention.

[0044] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0045] It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention.

[0046] Reference Figure 1 , Figure 1 This is a schematic diagram of the projector structure in the hardware operating environment involved in the embodiments of the present invention.

[0047] like Figure 1 As shown, the projector may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used to enable communication between these components. The user interface 1003 may include a display screen and an input unit such as a keyboard; optionally, the user interface 1003 may also include a standard wired interface or a wireless interface. The network interface 1004 may optionally include a standard wired interface or a wireless interface (such as a Wireless-Fidelity (Wi-Fi) interface). The memory 1005 may be high-speed random access memory (RAM) or stable non-volatile memory (NVM), such as a disk drive. The memory 1005 may also optionally be a storage device independent of the aforementioned processor 1001.

[0048] Those skilled in the art will understand that Figure 1 The structure shown does not constitute a limitation on the electronic device and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0049] like Figure 1 As shown, the memory 1005, which serves as a storage medium, may include an operating system, a network communication module, a user interface module, and a projector control program.

[0050] exist Figure 1 In the projector shown, the network interface 1004 is mainly used for data communication with the network server; the user interface 1003 is mainly used for data interaction with the user; the processor 1001 and the memory 1005 in the electronic device of the present invention can be set in the projector. The electronic device calls the projector control program stored in the memory 1005 through the processor 1001 and executes the projector control method provided in the embodiment of the present invention.

[0051] This invention provides a projector control method, referring to... Figure 2 , Figure 2 This is a flowchart illustrating a first embodiment of a projector control method according to the present invention.

[0052] In this embodiment, the projector control method includes the following steps:

[0053] Step S10: Check if there is airflow at the air outlet of the projector.

[0054] It should be noted that the execution subject in this embodiment can be the projector, or other devices that can control the projector. This embodiment does not limit this. In this embodiment and the following embodiments, the projector is used as an example to describe the projector control method of the present invention.

[0055] It should be noted that projectors may have a cooling fan and air vents on their casing. When the projector is powered on, the cooling fan will start and continuously blow air to expel heat generated by the light source, spatial light modulator, motherboard chips, and other heat-generating components. This airflow will create a breeze at the projector's air vents. The spatial light modulator can be a DMD, LCD, or LCoS, etc.

[0056] In a specific implementation, detecting whether wind is generated at the air outlet of the projector can be done by setting up a corresponding sensing device at the air outlet. The sensing device can be a wind sensor, wind speed sensor, or wind pressure sensor, etc.

[0057] Step S20: If yes, then generate a lens-on signal.

[0058] Understandably, if airflow is generated at the projector's vent, it means that the projector is continuously blowing air outwards. Airflow at the projector's vent indicates that the projector is being powered on or in operation. At this time, controlling the lens cover to open prevents the lens cover from being opened when the projector is not in use, effectively preventing dust from entering the lens and foreign objects from damaging the lens. Therefore, the lens in the projector can be activated at this time, and a lens opening signal can be generated to control the lens opening.

[0059] Step S30: Send the lens opening signal to the lens control motor to control the lens cap to open.

[0060] It should be noted that the projector's casing has a light outlet, and the projector lens is housed inside the casing and corresponds to the light outlet. The casing also includes a motor and a movable lens cap. The motor is connected to the lens cap to drive the lens cap to either cover or expose the light outlet. The connection between the motor and the lens cap can be via gears or a rack and pinion mechanism. The lens cap protects the lens, and the lens control motor controls the opening and closing of the lens cap. Sending a lens-opening signal to the lens control motor activates it, and through the transmission connection, controls the lens cap to open.

[0061] This embodiment detects whether airflow is occurring at the projector's air outlet; if so, a lens opening signal is generated and sent to the lens control motor to control the lens cover to open. Since detecting airflow at the projector's air outlet indicates that the projector is powered on or in operation, controlling the lens cover to open at this time prevents the lens cover from opening when the projector is not in use, effectively preventing dust from entering the lens and preventing damage from foreign objects.

[0062] refer to Figure 3 , Figure 3 This is a flowchart illustrating a second embodiment of a projector control method according to the present invention.

[0063] Based on the first embodiment described above, in this embodiment, the sensing device installed at the air outlet of the projector is a wind pressure sensor, and step S10 of the projector control method includes:

[0064] Step S10': If a wind pressure detection signal is received from the wind pressure sensor, it is determined that wind force is detected at the air outlet of the projector.

[0065] It should be noted that the working principle of a wind pressure sensor is that the pressure of the wind pressure sensor acts directly on the diaphragm of the sensor, causing the diaphragm to produce a micro displacement proportional to the medium pressure. This causes a change in the resistance of the sensor, which is detected by electronic circuitry and converted into a standard signal corresponding to this pressure.

[0066] Understandably, if the wind pressure sensor deployed at the air outlet of the projector detects wind force, it will send a wind pressure detection signal back to the projector to indicate that there is air coming out of the air outlet. Therefore, upon receiving the wind pressure detection signal from the wind pressure sensor, it can be determined that wind force is generated at the air outlet of the projector.

[0067] In a practical implementation, the projector can be equipped with a microcontroller. The microcontroller receives the wind pressure detection signal from the wind pressure sensor and sends the generated lens opening signal to the lens control motor, thereby controlling the lens cover to open.

[0068] Furthermore, since the environment in which the projector is located often experiences foot traffic or natural wind, the wind pressure sensor may also detect wind force and send a wind pressure detection signal back to the projector. However, the projector has not actually started to blow air outwards at this time. To avoid this false detection, the step described in this embodiment, which determines that wind force is detected at the air outlet of the projector if a wind pressure detection signal is received from the wind pressure sensor, may include:

[0069] If a wind pressure detection signal is received from the wind pressure sensor, the wind pressure intensity is read from the wind pressure detection signal;

[0070] The wind pressure intensity is compared with a preset intensity threshold.

[0071] If the wind pressure intensity is greater than a preset intensity threshold, it is determined that wind force is detected at the air outlet of the projector.

[0072] It's understandable that foot traffic and natural wind generally have little impact on the projector's air outlet, resulting in a relatively low wind pressure reading from the wind pressure sensor. Therefore, upon receiving a wind pressure detection signal, the wind pressure intensity can be read and compared to a preset threshold. If the wind pressure intensity is greater than the preset threshold, it indicates a higher detected wind pressure, unlikely to be a false alarm caused by foot traffic or natural wind. Thus, it can be determined that wind is detected at the projector's air outlet. The preset threshold can be pre-set by the projector's administrator.

[0073] In a specific implementation, if the wind pressure intensity is less than or equal to a preset intensity threshold, it indicates that the wind pressure sensor may be misdetecting due to factors such as people walking or natural wind, and the projector has not yet started blowing air outwards. However, the projector is actually already powered on and will inevitably start blowing air outwards later. To quickly detect when air actually starts blowing, this embodiment may further include the following after the step of comparing the wind pressure intensity with the preset intensity threshold:

[0074] If the wind pressure intensity is less than or equal to a preset intensity threshold, then obtain the current time.

[0075] The next detection time is generated based on the current time and the preset detection interval.

[0076] If the system reaches the re-detection time, the wind pressure intensity is read from the wind pressure sensor, and the process returns to the step of comparing the wind pressure intensity with a preset intensity threshold.

[0077] It should be noted that the current time can be the current system operating time of the projector. The system time can be the system operating time within the projector. Generating the re-detection time based on the current time and the preset detection interval can be achieved by adding the current time to the preset detection interval.

[0078] It is understandable that when the wind pressure intensity is less than or equal to the preset intensity threshold, a re-detection time is generated based on the current time and the preset detection interval. Then, when the system time reaches the re-detection time, the wind pressure intensity is read from the wind pressure sensor again, and the process of comparing the wind pressure intensity with the preset intensity threshold is returned. This achieves periodic detection of the wind pressure intensity, enabling rapid detection when the projector is actually blowing air outward.

[0079] Furthermore, to protect the lens and prevent dust from entering the lens when the projector is not running, this embodiment may further include the following step after step S10':

[0080] If a wind stop signal is received from the wind pressure sensor, a lens shut-off signal is generated.

[0081] The lens closing signal is sent to the lens control motor to control the lens cap to close.

[0082] It should be noted that the wind pressure sensor will run continuously and send a wind stop signal to the projector when it cannot detect wind pressure. If the projector receives the wind stop signal from the wind pressure sensor, it means that the wind pressure sensor cannot detect wind pressure at the air outlet. At this time, the projector has stopped blowing air outward, and the projector may have already been running. In this case, in order to prevent dust from entering the lens, the lens cover can be closed. Therefore, a lens close signal can be generated and sent to the lens control motor to control the lens cover to close, thereby protecting the lens and preventing dust from entering the lens.

[0083] In a practical implementation, the projector can also be equipped with a microcontroller. The microcontroller can receive the wind stop signal fed back by the wind pressure sensor and send the generated lens closing signal to the lens control motor to control the lens cover to close.

[0084] This embodiment installs a wind pressure sensor at the projector's air outlet. Upon receiving a wind pressure detection signal from the sensor, it reads the wind pressure intensity. Only when the wind pressure intensity exceeds a preset value is it determined that wind is detected at the projector's air outlet. This avoids false detections caused by factors such as pedestrian movement and natural wind, improving the reliability of the projector control method. When the wind pressure intensity is less than or equal to the preset value, it reads the wind pressure intensity from the sensor again after a certain period to determine whether wind is generated at the projector's air outlet. This ensures that wind generated at the projector's air outlet can be quickly detected during projector operation, thus avoiding excessive waiting time for the lens to open and improving the user experience.

[0085] refer to Figure 4 , Figure 4 This is a flowchart illustrating a second embodiment of a projector control method according to the present invention.

[0086] Based on the first embodiment described above, after step S30 in this embodiment, the following may also be included:

[0087] Step S40: When a projector power-off signal is detected, a lens-off signal is generated.

[0088] It should be noted that the projector power-off signal can be generated when the user controls the projector to turn it off. For example, if the user clicks the power button on the projector remote control or the power button on the projector itself, the projector will generate a power-off signal.

[0089] In the actual implementation, if a projector shutdown signal is detected, it means that the user wants to turn off the projector. In order to protect the lens, the lens cap needs to be closed first. Therefore, a lens shutdown signal can be generated first.

[0090] Step S50: Send the lens closing signal to the lens control motor to control the lens cap to close.

[0091] Understandably, sending a lens-off signal to the lens control motor will cause the lens control motor to run, controlling the lens cap to close, thereby protecting the lens and preventing dust from entering it.

[0092] Step S60: When the lens cover is closed, control the projector to perform a power-off operation.

[0093] Understandably, if the lens cap is closed, the lens is protected and dust will not get in. At this time, the projector can be turned off to shut down the operation of various components in the projector, such as the light source, spatial light modulator, motherboard chip and cooling fan.

[0094] Furthermore, to ensure that the lens cap is truly closed when the projector actually performs the power-off operation, the following steps may be included before step S60 in this embodiment:

[0095] Obtain the signal transmission time of the lens off signal;

[0096] The lens detection time is determined based on the signal transmission time.

[0097] If the system reaches the lens detection time, the open / closed state of the lens cover is obtained.

[0098] If the opening / closing state is closed, then the lens cap is determined to be closed.

[0099] It should be noted that the lens control motor is a relatively basic hardware device with limited functions. It may provide feedback on whether the lens cover has been closed. In this case, the lens detection time can be generated based on the signal transmission time of the lens closing signal and the time required for the lens control motor to close the lens cover. When the system time in the projector reaches the lens detection time, the open and closed state of the lens cover is obtained, and then the open and closed state of the lens cover is detected to determine whether the lens cover has been closed completely.

[0100] Understandably, if the lens cap is in the closed state, it indicates that the lens control motor has successfully closed the lens cap. Therefore, it can be determined that the lens cap is closed successfully, and subsequent steps can be executed to control the projector to perform a shutdown operation. However, if the lens cap is not in the closed state, it can be checked again after a period of time. If it is not in the closed state after multiple consecutive checks, the user can be prompted to have it checked.

[0101] This embodiment generates a lens shut-off signal upon detecting a projector shutdown signal; sends this signal to the lens control motor to close the lens cover; and then controls the projector to perform a shutdown operation once the lens cover is closed. Because the lens shut-off signal is generated and sent to the lens control motor only after the lens cover has closed, the projector continues to blow air until the lens cover closes, minimizing dust accumulation on the lens.

[0102] Furthermore, embodiments of the present invention also propose a storage medium storing a projector control program, wherein the projector control program, when executed by a processor, implements the steps of the projector control method described above.

[0103] Reference Figure 5 , Figure 5This is a structural block diagram of the first embodiment of the projector control device of the present invention.

[0104] like Figure 5 As shown, the projector control device proposed in this embodiment of the invention includes:

[0105] The air outlet detection module 10 is used to detect whether air force is generated at the air outlet of the projector;

[0106] It should be noted that the execution subject in this embodiment can be the projector, or other devices that can control the projector. This embodiment does not limit this. In this embodiment and the following embodiments, the projector is used as an example to describe the projector control method of the present invention.

[0107] It should be noted that projectors can be equipped with cooling fans, and air vents can also be installed on the projector's casing. When the projector is turned on, the cooling fan inside the projector will start and continuously blow air to dissipate the heat generated by the heat-generating components (light source, spatial light modulator, motherboard chip, etc.) in the projector. At this time, airflow will be generated at the projector's air vents.

[0108] In a specific implementation, detecting whether wind is generated at the air outlet of the projector can be done by setting up a corresponding sensing device at the air outlet. The sensing device can be a wind sensor, wind speed sensor, or wind pressure sensor, etc.

[0109] The signal generation module 20 is used to generate a lens-on signal if the condition is met.

[0110] Understandably, if air is generated at the projector's vent, it means that the projector is constantly blowing air outward. At this time, it is difficult for dust to enter the projector's interior, let alone adhere to the lens. In this case, the lens in the projector can be activated, and a lens activation signal can be generated to control the activation of the lens.

[0111] The lens control module 30 is used to send the lens opening signal to the lens control motor to control the lens cover to open.

[0112] It should be noted that, to protect the lens, projectors typically have a lens cap. The lens control motor is a device used to control the opening and closing of the lens cap. Sending a lens-open signal to the lens control motor will activate it and open the lens cap.

[0113] This embodiment detects whether airflow is occurring at the projector's air outlet; if so, a lens opening signal is generated and sent to the lens control motor to control the lens cover to open. Since detecting airflow at the projector's air outlet indicates that the projector is powered on or in operation, controlling the lens cover to open at this time prevents the lens cover from opening when the projector is not in use, effectively preventing dust from entering the lens and preventing damage from foreign objects.

[0114] Furthermore, a wind pressure sensor is installed at the air outlet of the projector;

[0115] The air outlet detection module 10 is also used to determine that wind force is detected at the air outlet of the projector if it receives a wind pressure detection signal fed back by the wind pressure sensor.

[0116] Furthermore, the air outlet detection module 10 is also used to read the wind pressure intensity from the wind pressure detection signal if it receives the wind pressure detection signal fed back by the wind pressure sensor; compare the wind pressure intensity with a preset intensity threshold; and if the wind pressure intensity is greater than the preset intensity threshold, determine that wind force is detected at the air outlet of the projector.

[0117] Furthermore, the air outlet detection module 10 is also used to obtain the current time if the wind pressure intensity is less than or equal to a preset intensity threshold; generate a re-detection time based on the current time and a preset detection interval; if the system time reaches the re-detection time, read the wind pressure intensity from the wind pressure sensor and return to the step of comparing the wind pressure intensity with the preset intensity threshold.

[0118] Furthermore, the lens control module 30 is also used to generate a lens closing signal if it receives a wind stop signal from the wind pressure sensor; and send the lens closing signal to the lens control motor to control the lens cover to close.

[0119] Furthermore, the lens control module 30 is also used to generate a lens shutdown signal when a projector shutdown signal is detected; send the lens shutdown signal to the lens control motor to control the lens cover to close; and control the projector to perform a shutdown operation when the lens cover is closed.

[0120] Furthermore, the lens control module 30 is also used to acquire the signal transmission time of the lens closing signal; determine the lens detection time based on the signal transmission time; if the system time reaches the lens detection time, acquire the opening and closing state of the lens cover; if the opening and closing state is the closed state, determine that the lens cover is closed.

[0121] It should be understood that the above are merely illustrative examples and do not constitute any limitation on the technical solutions of the present invention. In specific applications, those skilled in the art can make settings as needed, and the present invention does not impose any restrictions on this.

[0122] It should be noted that the workflow described above is merely illustrative and does not limit the scope of protection of this invention. In practical applications, those skilled in the art can select some or all of the workflow to achieve the purpose of this embodiment according to actual needs, and no restrictions are imposed here.

[0123] In addition, for technical details not described in detail in this embodiment, please refer to the projector control method provided in any embodiment of the present invention, which will not be repeated here.

[0124] Furthermore, it should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0125] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0126] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as read-only memory (ROM) / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0127] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A projector control method, characterized in that, The projector is equipped with a cooling fan and a microcontroller, and a wind pressure sensor is installed at the air outlet of the projector. The projector control method includes the following steps: When the projector is powered on, the cooling fan is activated, and it is detected whether airflow is generated at the projector's air outlet. If the microcontroller receives the wind pressure detection signal from the wind pressure sensor, it determines that wind force is detected at the air outlet of the projector, and generates a lens opening signal through the microcontroller. The lens opening signal is sent to the lens control motor to control the lens cap to open; The step of determining that wind force is detected at the air outlet of the projector if the microcontroller receives a wind pressure detection signal from the wind pressure sensor includes: If the microcontroller receives the wind pressure detection signal fed back by the wind pressure sensor, it reads the wind pressure intensity from the wind pressure detection signal; The wind pressure intensity is compared with a preset intensity threshold. If the wind pressure intensity is greater than a preset intensity threshold, it is determined that wind force is detected at the air outlet of the projector. If the wind pressure intensity is less than or equal to a preset intensity threshold, then obtain the current time. The next detection time is generated based on the current time and the preset detection interval. If the system reaches the re-detection time, the wind pressure intensity is read from the wind pressure sensor, and the process returns to the step of comparing the wind pressure intensity with a preset intensity threshold.

2. The projector control method as described in claim 1, characterized in that, After the step of sending the lens opening signal to the lens control motor to control the lens cap opening, the method further includes: If a wind stop signal is received from the wind pressure sensor, a lens shut-off signal is generated. The lens closing signal is sent to the lens control motor to control the lens cap to close.

3. The projector control method as described in claim 1 or 2, characterized in that, After the step of sending the lens opening signal to the lens control motor to control the lens cap opening, the method further includes: When a projector shutdown signal is detected, a lens shutdown signal is generated; The lens closing signal is sent to the lens control motor to control the lens cap to close; When the lens cover is closed, the projector is controlled to perform a power-off operation.

4. The projector control method as described in claim 3, characterized in that, Before the step of controlling the projector to perform a power-off operation after the lens cover is closed, the method further includes: Obtain the signal transmission time of the lens off signal; The lens detection time is determined based on the signal transmission time. If the system reaches the lens detection time, the open / closed state of the lens cover is obtained. If the opening / closing state is closed, then the lens cap is determined to be closed.

5. A projector control device, characterized in that, The projector is equipped with a cooling fan and a microcontroller. A wind pressure sensor is installed at the air outlet of the projector. The projector control device includes the following modules: The air outlet detection module is used to start the cooling fan when the projector is powered on and detect whether air force is generated at the air outlet of the projector. The signal generation module is used to determine that wind force is detected at the air outlet of the projector if the microcontroller receives the wind pressure detection signal fed back by the wind pressure sensor, and then generate a lens opening signal through the microcontroller. The lens control module is used to send the lens opening signal to the lens control motor to control the lens cover to open; The signal generation module is further configured to, if the microcontroller receives a wind pressure detection signal fed back by the wind pressure sensor, read the wind pressure intensity from the wind pressure detection signal and compare the wind pressure intensity with a preset intensity threshold. If the wind pressure intensity is greater than a preset intensity threshold, it is determined that wind force is detected at the air outlet of the projector. If the wind pressure intensity is less than or equal to a preset intensity threshold, the current time is obtained; a second detection time is generated based on the current time and a preset detection interval; if the system time reaches the second detection time, the wind pressure intensity is read from the wind pressure sensor, and the step of comparing the wind pressure intensity with the preset intensity threshold is returned.

6. A projector, characterized in that, The projector includes: a processor, a memory, and a projector control program stored in the memory and executable on the processor, wherein when the projector control program is executed by the processor, it implements the steps of the projector control method as described in any one of claims 1-4.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a projector control program, which, when executed, implements the steps of the projector control method as described in any one of claims 1-4.

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