CN113267943B - Method for adjusting brightness of standby indicator light, projector and readable storage medium - Google Patents
Method for adjusting brightness of standby indicator light, projector and readable storage medium Download PDFInfo
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- CN113267943B CN113267943B CN202110421466.9A CN202110421466A CN113267943B CN 113267943 B CN113267943 B CN 113267943B CN 202110421466 A CN202110421466 A CN 202110421466A CN 113267943 B CN113267943 B CN 113267943B
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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
- G03B21/142—Adjusting of projection optics
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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
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
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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
- G03B21/20—Lamp housings
- G03B21/2053—Intensity control of illuminating light
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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
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The application discloses a brightness adjusting method for a standby indicator lamp of a projector, the projector and a computer readable storage medium, wherein the method comprises the following steps: when the condition that the projector enters a standby state is detected, acquiring the ambient brightness acquired by the light sensor, and determining the reference brightness of the standby indicator lamp based on the ambient brightness; calculating the overall average distance of the first average distance and the second average distance, and determining the brightness gain coefficient of the standby indicator lamp according to the overall average distance; acquiring the current brightness of a standby indicator lamp of the projector, and determining the target brightness according to the reference brightness and the brightness gain coefficient; and adjusting the actual brightness of the standby indicator lamp according to the current brightness and the target brightness. The invention solves the technical problems of inflexible brightness adjustment and high hardware cost of the standby indicator lamp of the projector.
Description
Technical Field
The application relates to the technical field of intelligent control of projectors, in particular to a brightness adjusting method for a standby indicator lamp of a projector, the projector and a computer readable storage medium.
Background
When the projector is in a standby state, the main chip arranged on the main control board of the projector generally keeps one functional unit to continue to operate, and other functional modules of the main chip are all in a power-off state. When the projector is in a standby state, the standby state is generally identified by lighting an LED (light-emitting diode) lamp, and at this time, the projector only responds to the power-on key. When the projector is in standby mode, the LED lamp (i.e., the standby indicator lamp) is in a full-on state, and the brightness of the lamp in the full-on state is high. However, the brightness can only be reduced by thickening the light guide column, and the hardware cost is increased, so that the brightness of the standby indicator lamp of the projector cannot be flexibly adjusted at low cost.
Disclosure of Invention
The embodiments of the present application mainly aim to provide a method for adjusting brightness of a standby indicator of a projector, and a computer-readable storage medium, which are used to solve the technical problems of inflexible brightness adjustment and high hardware cost of the standby indicator of the projector.
In order to achieve the above object, an embodiment of the present application provides a method for adjusting brightness of a standby indicator light of a projector, where the projector includes a main control board, an optical machine, a light sensor, a standby indicator light, and a distance sensor array, and the optical machine, the distance sensor array, the standby indicator light, and the light sensor are all electrically connected to the main control board; the standby indicator lamp is arranged on the projector shell;
the distance sensor array is arranged at the top or the bottom of the projector shell and comprises distance sensors facing to a plurality of directions; the light sensor is arranged in the region outside the light-emitting side of the projector shell to detect the ambient brightness of the scene where the projector is located;
the brightness adjusting method of the standby indicator lamp of the projector comprises the following steps:
when the condition that the projector enters a standby state is detected, acquiring the ambient brightness acquired by a light sensor, and determining the reference brightness of a standby indicator lamp based on the ambient brightness;
detecting obstacles in the surrounding environment of the projector based on the distance sensor array, constructing a virtual space model of the environment where the projector is located, and acquiring a first average distance from the projector to the boundary of the virtual space model;
detecting a human body in the surrounding environment of the projector based on the distance sensor array, and if the human body exists, acquiring a second average distance from the projector to the human body; if no human body exists, assigning the second average distance as the first average distance;
calculating the overall average distance of the first average distance and the second average distance, and determining a brightness gain coefficient of the standby indicator lamp according to the overall average distance, wherein the brightness gain coefficient is larger when the overall average distance is larger;
acquiring the current brightness of a standby indicator lamp of the projector, and determining the target brightness according to the reference brightness and the brightness gain coefficient;
and adjusting the actual brightness of the standby indicator lamp according to the current brightness and the target brightness until the actual brightness is the target brightness.
Optionally, the step of determining the reference brightness of the standby indicator lamp based on the ambient brightness comprises:
determining a first reference brightness of a standby indicator lamp based on the ambient brightness, wherein the ambient brightness is positively correlated with the first reference brightness;
acquiring environmental noise of the environment where the projector is located, and determining second reference brightness of the standby indicator light based on the environmental noise, wherein the environmental noise is positively correlated with the second reference brightness;
judging whether the environment of the projector is in a preset rest time period or not, and if so, taking the third reference brightness of the standby indicator light as the preset rest time period brightness; if the standby indicator light is not in the preset rest time period, the third reference brightness of the standby indicator light is the preset working time period brightness; the brightness of the preset rest time period is less than that of the preset working time period;
and taking the average value of the first reference brightness, the second reference brightness and the third reference brightness as the reference brightness of the standby indicator lamp.
Optionally, the method for adjusting the brightness of the standby indicator light of the projector further includes:
when the projector is not in a standby state, controlling the projector to project a brightness preference test image to a projection surface, dividing the standard brightness of the brightness preference test image into 100 equal parts and displaying a preference progress bar of 0-100%, and acquiring the brightness preference of a user based on an operation instruction input by the user based on the preference progress bar, wherein the brightness preference of the user is a percentage value;
the step of determining the target brightness according to the reference brightness and the brightness gain coefficient includes:
and taking the product of the reference brightness, the brightness gain coefficient and the brightness preference of the user as the target brightness of the standby indicator lamp.
Optionally, after the step of adjusting the actual brightness of the standby indicator according to the current brightness and the target brightness, the method further includes:
the method comprises the steps of obtaining the use frequency of a projector in a past preset time period, and controlling the standby indicator light to flicker when the use frequency is larger than the preset frequency, wherein the standby indicator light flicker frequency is positively correlated with the use frequency.
Optionally, the step of adjusting the actual brightness of the standby indicator light according to the current brightness and the target brightness includes:
judging whether the absolute value of the difference value between the target brightness and the current brightness is larger than a preset trigger threshold value or not;
if the absolute value of the difference is larger than a preset trigger threshold, increasing the current brightness by a preset unit brightness to be used as the actual brightness of the standby indicator lamp when the target brightness is larger than the current brightness; and when the target brightness is smaller than the current brightness, reducing the current brightness by a preset unit brightness to be used as the actual brightness of the standby indicator lamp.
Optionally, the method for adjusting the brightness of the standby indicator light of the projector further includes:
and when detecting that the standby indicator lamp generates new actual brightness, delaying preset time and executing the step of acquiring the ambient brightness acquired by the light sensor.
Optionally, the method for adjusting the brightness of the standby indicator light of the projector further includes:
when the situation that the ambient brightness acquired by the light sensor of the projector is detected to be changed from light to dark twice in preset unit time is detected, the standby indicator lamp of the projector is controlled to be turned off, and the power of the projector is controlled to be cut off.
Optionally, the power supply pin of the standby indicator light is electrically connected to a main control board of the projector, and when the brightness of the standby indicator light of the projector needs to be adjusted, the pulse width modulation PWM function of the power supply pin of the standby indicator light is activated by the main control board, so as to adjust the high level duration of the power supply pin of the standby indicator light in one clock cycle, where the greater the high level duration in one clock cycle, the greater the brightness of the standby indicator light.
In order to achieve the above object, the present application further provides a projector, where the projector includes a memory disposed on a main control board, a processor, and a computer program stored in the memory and running on the processor, and when the computer program is executed by the processor, the method for adjusting brightness of a standby indicator light of a projector as described above is implemented.
In order to achieve the above object, the present application further provides a readable storage medium, which stores a computer program, and the computer program when executed by a processor implements the steps of the method for adjusting the brightness of the standby indicator light of the projector.
According to the method, the light sensor and the distance sensor array are arranged on the projector, when the projector is in a standby state, the reference brightness of the standby indicator light is determined based on the ambient brightness acquired by the light sensor, then the first average distance from the projector to peripheral obstacles and the second average distance from the projector to peripheral human bodies are determined based on the distance sensor array, then the brightness gain coefficient of the standby indicator light is determined according to the total average distance between the first average distance and the second average distance, finally the actual brightness of the standby indicator light is adjusted to the target brightness according to the current brightness and the target brightness, the influence of the ambient brightness on the standby indicator light is comprehensively considered, the expected effects of effective light prompt and eye protection prompt of a user of the standby indicator light under different ambient brightness are enhanced, and meanwhile, the space size, the eye protection prompt and the eye protection prompt of the projector are considered by combining the first average distance, The second average distance takes the actual distance between the user and the projector into consideration to take eye protection reminding of the user, and because the brightness of the standby indicator light takes eye protection of the user and effective light reminding into consideration, the brightness of the standby indicator light is in moderate brightness, so that the eyes are not dazzled, electricity is not wasted, and electric energy is saved; moreover, through ambient brightness and overall average distance, the actual demand of effective suggestion of light and user's eyeshield sets out, need not to increase thickening leaded light post for the projector, has adjusted projector standby pilot lamp luminance in a flexible way, with low costs.
Drawings
Fig. 1 is a schematic hardware structure diagram of a projector according to an alternative embodiment of the present application;
FIG. 2 is a schematic flow chart illustrating a method for adjusting the brightness of a standby indicator of a projector according to the present application;
fig. 3 is a schematic diagram of a power supply voltage variation timing sequence of a power supply pin of the projector under different brightness of the standby indicator light.
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 projector can comprise a main control board, an optical machine, a light sensor, a standby indicator light and a distance sensor array, wherein the optical machine, the distance sensor array, the standby indicator light and the light sensor are all electrically connected with the main control board; the standby indicator lamp is arranged on the projector shell; the distance sensor array is arranged at the top or the bottom of the projector shell and comprises distance sensors facing to a plurality of directions; the light sensor is arranged in an area outside the light-emitting side of the projector shell to detect the ambient brightness of a scene where the projector is located.
As shown in fig. 1, the main control board of the projector includes a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, and 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 such as a 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 other sensors are sensors such as light sensors and distance sensors. In particular, the light sensor may include an ambient light sensor and a proximity sensor.
Those skilled in the art will appreciate that the projector configuration shown in fig. 1 is not intended to be limiting 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 the projector standby indicator light brightness adjustment program stored in memory 1005 and perform the following operations:
when the condition that the projector enters a standby state is detected, acquiring the ambient brightness acquired by a light sensor, and determining the reference brightness of a standby indicator lamp based on the ambient brightness;
detecting obstacles in the surrounding environment of the projector based on the distance sensor array, constructing a virtual space model of the environment where the projector is located, and acquiring a first average distance between the projector and the boundary of the virtual space model;
detecting a human body in the surrounding environment of the projector based on the distance sensor array, and if the human body exists, acquiring a second average distance from the projector to the human body; if no human body exists, assigning the second average distance as the first average distance;
calculating the overall average distance of the first average distance and the second average distance, and determining a brightness gain coefficient of the standby indicator lamp according to the overall average distance, wherein the brightness gain coefficient is larger when the overall average distance is larger;
acquiring the current brightness of a standby indicator lamp of the projector, and determining the target brightness according to the reference brightness and the brightness gain coefficient;
and adjusting the actual brightness of the standby indicator lamp according to the current brightness and the target brightness until the actual brightness is the target brightness.
In order to solve the technical problems of inflexible brightness adjustment and high hardware cost of the projector standby indicator light, the invention provides a brightness adjustment method of the projector standby indicator light, wherein the projector comprises a main control board, an optical machine, a light sensor, a standby indicator light and a distance sensor array, and the optical machine, the distance sensor array, the standby indicator light and the light sensor are all electrically connected with the main control board; the standby indicator lamp is arranged on the projector shell, so that a user can see the light of the motor indicator lamp conveniently, and the standby indicator lamp is generally arranged at the top of the projector shell.
The distance sensor array is arranged at the top or the bottom of the projector shell and comprises distance sensors facing to a plurality of directions; the light sensor is arranged in the region outside the light-emitting side of the projector shell to detect the ambient brightness of the scene where the projector is located; because the light sensor generally needs to collect the ambient brightness when the projector works to be used as the basis for adjusting the projection brightness of the optical engine, the light sensor is not suitable to be arranged on the light-emitting side of the projector housing, otherwise, the light sensor is easily influenced by the projection light of the optical engine, and therefore, the light sensor can be generally arranged on the top or the side wall of the projector housing.
Based on the hardware structure of the projector, the invention provides a brightness adjusting method for a standby indicator lamp of the projector, and referring to fig. 2, the method comprises the following steps:
step S10, when the projector is detected to enter the standby state, acquiring the ambient brightness acquired by the light sensor, and determining the reference brightness of the standby indicator light based on the ambient brightness;
in this embodiment, the intensity of the ambient light (i.e., the ambient brightness) is sensed by the brightness sensor, and the distance between the projector and an obstacle or a human body in the environment surrounding the projector is detected by the distance sensor array. In a preferred embodiment, as shown in fig. 1, the light sensor can be disposed on the top of the projector housing, so as to sense the ambient light and be not affected by the light emitted from the projector lens as much as possible; the distance sensor array is preferably arranged at the top of the projector shell arranged on the projector main machine, and can accurately measure the distance from the projector to the surrounding environment obstacles without obstacles.
The main control board of the projector is respectively and electrically connected with the distance sensor and the light sensor, and the main control board can directly acquire the ambient brightness acquired by the light sensor and the barrier distance acquired by the distance sensor; meanwhile, the main control board is electrically connected with the standby indicator lamp and can send commands to control the brightness of the standby indicator lamp.
After the ambient brightness of the projector in the current working environment is obtained, the reference brightness adaptive to the standby indicator lamp corresponding to the ambient brightness is searched in a brightness comparison table preset by the projector, and the reference brightness is suitable for the ambient brightness of the working environment where the projector is located and relatively not too dark or dazzling.
Specifically, the calibration of the brightness comparison table:
according to the highest brightness and the lowest brightness of the standby indicator light, the available brightness interval of the standby indicator light is set into 100 levels, and the intervals of each level are the same;
according to the measuring interval of the light sensor, the measuring brightness interval of the light sensor is divided into 100 levels from darkest to brightest, and the brightness interval of each level is the same.
Thus, the luminance mapping table is a sub-interval mapping table between 100 sub-intervals of the available luminance interval of the projector and 100 sub-intervals of the luminance interval measurable by the light sensor, for example, the luminance mapping table includes {100, 101}, {120, 102},.. gtorener }, {1000,126}, {1200, 128}, {150, 104},. gtorener }, {28000, 198}, {29000, 199}, and {30000, 200 }. Furthermore, based on the brightness comparison table, the reference brightness which is adapted to the standby indicator lamp and is determined by the ambient brightness can be quickly obtained, and the consumed computing resources are few.
Step S20, detecting obstacles in the surrounding environment of the projector based on the distance sensor array, constructing a virtual space model of the environment where the projector is located, and acquiring a first average distance between the projector and the boundary of the virtual space model;
the distance sensor array comprises a plurality of distance sensors, and each distance sensor's orientation is different, if the distance sensor array includes 8 distance sensors, 8 distance sensors orientation 8 position on coplanar, the distance sensor contained angle between two liang is 45 degrees.
The difference between the obstacle and the human body is whether the obstacle moves, and if the distance sensor detects that the distance of the peripheral object is unchanged within a certain time (such as one minute) (namely the peripheral object does not move), the peripheral object is the obstacle; if the distance sensor detects a distance change of a peripheral object within a certain time (e.g., one minute) (i.e., the peripheral object does not move), the peripheral object is a human body.
The distance sensor array can detect obstacles such as walls, doors, cabinets and the like of the surrounding environment of the projector, so that a virtual space model of the environment where the projector is located is constructed based on the distribution condition of the obstacles of the surrounding environment, virtual obstacles are arranged at the distances of the obstacles detected by the distance sensors in all directions in the virtual space model, a user can see a standby indicator light of the projector when passing through the position of an actual scene corresponding to the boundary of the virtual space model, the standby indicator light of the projector can be seen for evaluating how far the user can see the standby indicator light of the projector from the projector averagely, so that the first average distance from the projector is obtained, in the actual scene, the user can see the standby indicator light of the projector when the user is approximately at the first average distance from the projector, the problem that the user pays attention to the light of the standby indicator light at the first average distance, the brightness of the standby indicator light is not too large, and the energy conservation of the standby indicator light is considered is solved, the first average distance will be an important factor in determining the brightness of the standby indicator.
Step S30, detecting a human body in the surrounding environment of the projector based on the distance sensor array, and if the human body exists, acquiring a second average distance from the projector to the human body; if no human body exists, assigning the second average distance as the first average distance;
moreover, if the user has stepped into the first average distance around the projector, the main control board of the projector may detect that a human body exists in the environment around the projector based on the distance sensor array, and at this time, a situation that the user is continuously approaching the standby indicator of the projector needs to be further considered, and at this time, in order to avoid that the brightness of the indicator is too bright to the user and dazzling or too dark to be perceived, the second average distance is also an important factor for determining the brightness of the standby indicator. In addition, if the distance sensor array detects that no human body exists in the projector peripheral environment, the detected human body is the boundary of an obstacle in the projector peripheral environment, and the second average distance is assigned as the first average distance.
Step S40, calculating the overall average distance of the first average distance and the second average distance, and determining the brightness gain coefficient of the standby indicator lamp according to the overall average distance, wherein the brightness gain coefficient is larger when the overall average distance is larger;
the larger the first average distance is, the larger and more spacious the space of the placement environment of the projector is, the more difficult the user observes and finds the standby indicator light of the projector in a larger space is, so the brightness of the standby indicator light is needed correspondingly to be larger. The larger the second average distance is, the larger the distance between the user and the projector in the actual scene is, the smaller the influence of the illumination of the standby indicator light on the user is, so that the corresponding standby indicator light can observe and protect the vision of the user without dazzling, and the brightness of the standby indicator light can be increased. Therefore, the influence of the average first average distance and the average second average distance on the standby indicator light of the projector is taken as the brightness gain coefficient for calculating the brightness of the standby indicator light, and the brightness gain coefficient is larger when the overall average distance is larger. Similarly, the smaller the overall average distance is, the smaller the brightness gain coefficient is; the ensemble average distance is positively correlated to the luminance gain factor.
Step S50, obtaining the current brightness of the standby indicator light of the projector, and determining the target brightness according to the reference brightness and the brightness gain coefficient;
in one embodiment, the product of the reference brightness and the brightness gain coefficient may be determined as the target brightness of the standby indicator light, and the current brightness of the standby indicator light is collected by the main control board of the projector.
And step S60, adjusting the actual brightness of the standby indicator lamp according to the current brightness and the target brightness until the actual brightness is the target brightness.
In order to avoid the illusion that the brightness of the standby indicator light of the projector suddenly changes to cause damage to users, the actual brightness of the standby indicator light can be gradually adjusted to the target brightness from the current brightness, and the soft brightness adjustment of the standby indicator light is realized.
In this embodiment, by arranging the light sensor and the distance sensor array on the projector, when the projector is in a standby state, the reference brightness of the standby indicator light is determined based on the ambient brightness acquired by the light sensor, then the first average distance from the projector to the peripheral obstacle and the second average distance from the projector to the peripheral human body are determined based on the distance sensor array, then the brightness gain coefficient of the standby indicator light is determined according to the total average distance between the first average distance and the second average distance, finally the actual brightness of the standby indicator light is adjusted to the target brightness according to the current brightness and the target brightness, the influence of the ambient brightness on the standby indicator light is comprehensively considered, the expected effects of effective light prompt and eye protection prompt of a user of the standby indicator light under different ambient brightness are enhanced, and meanwhile, the first average distance is comprehensively considered to take account of the space size and the eye protection prompt of the environment where the projector is located, The second average distance takes the actual distance between the user and the projector into consideration to take eye protection reminding of the user, and because the brightness of the standby indicator light takes eye protection of the user and effective light reminding into consideration, the brightness of the standby indicator light is in moderate brightness, so that the eyes are not dazzled, electricity is not wasted, and electric energy is saved; moreover, through ambient brightness and overall average distance, the actual demand of effective suggestion of light and user's eyeshield sets out, need not to increase thickening leaded light post for the projector, has adjusted projector standby pilot lamp luminance in a flexible way, with low costs.
Further, in another embodiment of the brightness adjusting method for a standby indicator of a projector according to the present invention, step S60 includes:
step S61, judging whether the absolute value of the difference value between the target brightness and the current brightness is larger than a preset trigger threshold value;
step S62, if the absolute value of the difference is greater than a preset trigger threshold, when the target brightness is greater than the current brightness, increasing the current brightness by a preset unit brightness to be used as the actual brightness of the standby indicator light; when the target brightness is smaller than the current brightness, reducing the current brightness by a preset unit brightness to be used as the actual brightness of the standby indicator light;
and step S63, if the absolute value of the difference is less than or equal to a preset trigger threshold, not adjusting the actual brightness of the standby indicator light.
When the absolute value of the difference between the target brightness and the current brightness is smaller than or equal to the preset trigger threshold, it is indicated that the current brightness of the standby indicator lamp is substantially equal to the target brightness, the current brightness of the standby indicator lamp substantially meets the requirements of standby prompt and non-dazzling light brightness, at this time, brightness adjustment is not required to be performed on the standby indicator lamp, and the step S10 and the subsequent steps are skipped and executed.
When the absolute value of the difference value between the target brightness and the current brightness is smaller than a preset trigger threshold value, the current brightness of the standby indicator light is relatively dark or relatively bright compared with the flexible brightness, and the size relation between the target brightness and the current brightness is further judged; if the target brightness is greater than the current brightness, increasing the current brightness by a preset unit brightness to be used as the actual brightness of the standby indicator light, and then jumping to and executing the step S10 and the subsequent steps; if the target brightness is less than the current brightness, the current brightness is decreased by a preset unit brightness to serve as the actual brightness of the standby indicator, and then the step S10 and the subsequent steps are skipped and executed.
In addition, the brightness adjusting method for the standby indicator lamp of the projector further comprises the following steps: when detecting that the standby indicator lamp generates new actual brightness, delaying the preset time, executing the step S10 to acquire the ambient brightness acquired by the light sensor and the subsequent steps, so that the actual brightness of the standby indicator lamp is gradually adjusted to the target brightness once at intervals of the preset time, the soft adjustment process of the actual brightness of the standby indicator lamp is realized, the brightness of the standby indicator lamp does not have sharp change relative to the lighting prompt viewing experience of a user, and the lighting prompt viewing experience and the user eyesight protection in the brightness adjustment process of the standby indicator lamp are improved.
Further, in another embodiment of the brightness adjusting method for a standby indicator of a projector according to the present invention, the step of determining the reference brightness of the standby indicator based on the ambient brightness in step S10 includes:
step A1, determining a first reference brightness of the standby indicator light based on the ambient brightness, wherein the ambient brightness is positively correlated with the first reference brightness;
step A2, obtaining environmental noise of the environment where the projector is located, and determining a second reference brightness of the standby indicator light based on the environmental noise, wherein the environmental noise is positively correlated with the second reference brightness;
step A3, judging whether the environment of the projector is in a preset rest time period, if so, taking the third reference brightness of the standby indicator light as the brightness of the preset rest time period; if the standby indicator light is not in the preset rest time period, the third reference brightness of the standby indicator light is the preset working time period brightness; the brightness of the preset rest time period is smaller than that of the preset working time period;
and step A4, taking the average value of the first reference brightness, the second reference brightness and the third reference brightness as the reference brightness of the standby indicator light.
In order to better enable the brightness of the standby indicator light to better fit the overall requirements of effective light prompt and user eye protection prompt, the brightness of the standby indicator light can be positively correlated with the brightness of the environment around the projector, and in addition, the brightness of the standby indicator light can also be correlated with the use requirement degree of potential users around the projector for the projector and the difficulty of paying attention to the standby indicator light of the projector.
Specifically, the larger the environmental noise of the environment where the projector is located is, the more the peripheral users or the more the peripheral users are busy, the more attention paid to other things, and the relatively less attention paid to the standby indicator of the projector, at this time, the environmental noise is positively correlated with the second reference brightness, and the larger the environmental noise is, the greater the brightness of the standby indicator needs to be, so as to attract the attention of the user, thereby ensuring the prompt effectiveness of the standby indicator.
Moreover, if the user around the projector is in the preset rest period (for example, 22:00 to 9:00 of the next day), it indicates that the probability that the user needs to use the projector is small, at this time, the prompting requirement of the standby indicator light is relatively small, and the third reference brightness is relatively small; if the user around the projector is not in the preset rest period, it indicates that the probability that the user needs to use the projector is high, and the user is likely to wait for the use of the projector in a queue and just cannot see the standby indicator light, at this time, the prompt requirement of the standby indicator light is relatively high, and the third reference brightness is relatively high.
In this embodiment, on the basis of the first reference brightness related to the ambient brightness, the second reference brightness related to the ambient noise and the third reference brightness related to the work busy degree of the user are increased, and the average value of the first reference brightness, the second reference brightness and the third reference brightness is used as the reference brightness of the standby indicator lamp, so that the reference brightness gives consideration to the ambient brightness, the attention loss of peripheral users and the probability that the peripheral users use the projectors, and the reference brightness achieves better balance and consideration among the eye protection requirement of the user, the power saving of the projector and the effective light prompting requirement of the standby indicator lamp.
In addition, the method for adjusting the brightness of the standby indicator lamp of the projector further comprises the following steps:
when the projector is not in a standby state, controlling the projector to project a brightness preference test image to a projection surface, dividing the standard brightness of the brightness preference test image into 100 equal parts, displaying a preference progress bar of 0-100%, and acquiring the brightness preference of a user based on an operation instruction input by the user based on the preference progress bar, wherein the brightness preference of the user is a percentage value;
the step of determining the target luminance from the reference luminance and the luminance gain coefficient in step S50 includes:
and taking the product of the reference brightness, the brightness gain coefficient and the brightness preference of the user as the target brightness of the standby indicator lamp.
The user brightness preference of the standby indicator light can be tested and collected in advance and stored in the memory of the projector in advance so that the projector can be obtained and used at any time.
In addition, in order to meet the brightness requirement change of the user to the standby indicator light of the projector in different periods and meet different brightness preferences of different users to the standby indicator light, the projector can dynamically collect the brightness preference of the user. Specifically, the projector is controlled to project a brightness preference test image to the projection surface, the standard brightness of the brightness preference test image is divided into 100 equal parts and 0-100% of preference progress bars are displayed, and the user brightness preference is obtained based on an operation instruction input by a user based on the preference progress bars, wherein the user brightness preference is a percentage value. Therefore, a user can check whether the brightness preference test image of the standby indicator light of the projector is in a preferred brightness state or not by dragging the preference progress bar, and the user brightness preference of the current film watching user of the projector for the standby indicator light is quickly determined.
Further, in another embodiment of the brightness adjusting method for a standby indicator of a projector according to the present invention, the step of adjusting the actual brightness of the standby indicator according to the current brightness and the target brightness in step S60 further includes:
and B, acquiring the use frequency of the projector in a past preset time period, and controlling the standby indicator light to flicker when the use frequency is greater than the preset frequency, wherein the flicker frequency of the standby indicator light is positively correlated with the use frequency.
The past preset time period refers to a certain time period from the current time, and if the past preset time period refers to 7 days before the current time, the main control board of the projector records the use frequency of the projector in the past 7 days. If the use frequency of the projector in the past preset time period is greater than the preset frequency, the fact that the projector is frequently used is indicated, if the projector is in the standby state, the user needs to be informed at the first time, the projector is fully utilized, the situation that the projector is idle is avoided, and therefore the standby indicator light of the projector is further controlled to flicker, and the situation that signals of the standby indicator light are observed by surrounding users is further increased. Meanwhile, generally, the greater the blinking frequency of the lamp, the greater the probability of attracting the attention of the user, so the standby indicator lamp blinking frequency is positively correlated with the use frequency.
In addition, after the projector is in the standby state, the standby indicator lights are turned on or flickered, if a user needs to turn off the standby indicator lights of the projector, the user needs to search for a remote controller or search for an on-off key on a shell of the projector, because the projector is in the standby state, the on-off key on the shell generally cannot be indicated by power light, the user also needs to spend more energy to find the remote control and find the key for searching for the remote controller, especially in a scene with poor light, the user is inconvenient to turn off the standby indicator lights of the projector, the user has to endure troubles to find the remote control and find the key, or the user can only endure that the standby state of the projector consumes more electric energy.
In this application, to solve the above problem, the method for adjusting the brightness of the standby indicator light of the projector according to the present invention further includes: and step C, when detecting that the ambient brightness acquired by the light sensor of the projector alternates light and shade twice in a preset unit time, controlling the standby indicator light of the projector to be turned off, and controlling the projector to be powered off, wherein the light sensor and the standby indicator light are arranged at the same position of the projector shell, and the lighting direction of the light sensor is consistent with the light emitting direction of the standby indicator light.
After the projector is in a standby state, the light sensor of the projector continues to work, the light sensor and the standby indicator light are arranged at the same position of the projector shell, the lighting direction of the light sensor is consistent with the light emitting direction of the standby indicator light, if the light sensor detects that light and shade alternation occurs twice in preset unit time, the light sensor indicates that the hand of a user rapidly moves back and forth from the light emitting direction of the standby indicator light and is switched once, and if the palm of the user slides to the right side from the left side of the user opposite to the light emitting direction of the standby indicator light and then returns to the original position of the left side. The light in the light and shade alternation means that the ambient brightness acquired by the light sensor is greater than a preset maximum brightness value, the dark in the light and shade alternation means that the ambient brightness acquired by the light sensor is less than a preset minimum brightness value, and the preset maximum brightness value is greater than a preset minimum brightness value; the predetermined unit time is a short time, such as 1 second to 2 seconds.
In this embodiment, no matter the projector is in normal luminance environment, still be in under the darker environment, the standby indicator homoenergetic plays good positioning action, the user can be very convenient the position of finding the standby indicator, the user only needs to make a round trip to cross in the light-emitting direction of standby indicator with the one-hand palm, the standby indicator that can conveniently control the projector extinguishes, control the projector outage, need not to waste time and energy and look for remote controller and button, the convenience that the user closed the standby indicator has been improved greatly, the energy-conservation of projector has also been improved.
In addition, the present invention further provides a hardware implementation manner for adjusting the brightness of the standby indicator light, in this embodiment, a power supply pin of the standby indicator light is electrically connected to a main control board of the projector, and when the brightness of the standby indicator light of the projector needs to be adjusted, a high level duration of the power supply pin of the standby indicator light in one clock cycle is adjusted based on a Pulse Width Modulation (PWM) function of the power supply pin of the standby indicator light activated by the main control board, where the larger the high level duration in one clock cycle is, the larger the brightness of the standby indicator light is.
Specifically, when the projector is in a standby state, the PWM function of the power supply pin is activated, that is, the power supply pin of the standby indicator lamp is pulled up and then the power supply pin is pulled down in one clock cycle, so that less electric energy flows through the standby indicator lamp in the same unit time, and the purpose of reducing the brightness of the standby indicator lamp is achieved.
In a conventional lighting scheme of the standby indicator lamp of the projector, generally, one power supply pin is pulled up to output 3.3V, so that the standby indicator lamp keeps a full-on state. Because the full-bright state of the standby indicator light is too dazzling, the appearance of the projector and the whole environment is influenced. The application calls out a comfortable standby indicator light brightness (namely the target brightness) in a software mode. The power supply pin may be a General-purpose input/output (GPIO) pin.
For example, referring to fig. 3, the first row of arrows, one straight line, is the full high output voltage, and the brightness of the standby indicator light is set to the highest state.
The time that the power supply pin is at the high level in one clock cycle is less and less, the number of electrons flowing through the standby indicator lamp in unit time is less and less, and the brightness of the standby indicator lamp is lower and lower, and the arrows in the second row, the third row and the fourth row can represent the brightness of the standby indicator lamp at different levels.
The projector comprises a main control board, an optical machine, a light sensor, a standby indicator light and a distance sensor array, wherein the optical machine, the distance sensor array, the standby indicator light and the light sensor are all electrically connected with the main control board; the standby indicator lamp is arranged on the projector shell; the distance sensor array is arranged at the top or the bottom of the projector shell and comprises distance sensors facing to a plurality of directions; the light sensor is arranged in the region outside the light-emitting side of the projector shell to detect the ambient brightness of the scene where the projector is located;
the projector also comprises a memory arranged on the main control panel, a processor and a computer program which is stored on the memory and can run on the processor, wherein the computer program realizes the steps of the brightness adjusting method of the standby indicator lamp of the projector when being executed by the processor.
The present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and the computer program, when executed by a processor, implements the steps of the method for adjusting the brightness of the standby indicator light of the projector.
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 otherwise indicated 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 contents, and do not constitute a substantial limitation on the sequence, and those skilled in the art may perform S20 first and then perform S10 in the 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 present embodiments are not limited to those precise embodiments, which are intended to be illustrative rather than restrictive, and that various changes and modifications may be effected therein by one skilled in the art without departing from the scope of the appended claims.
Claims (10)
1. A method for adjusting the brightness of a standby indicator lamp of a projector is characterized in that the projector comprises a main control board, an optical machine, a light sensor, the standby indicator lamp and a distance sensor array, wherein the optical machine, the distance sensor array, the standby indicator lamp and the light sensor are electrically connected with the main control board; the standby indicator lamp is arranged on the projector shell;
the distance sensor array is arranged at the top or the bottom of the projector shell and comprises distance sensors facing to a plurality of directions; the light sensor is arranged in the region outside the light-emitting side of the projector shell to detect the ambient brightness of the scene where the projector is located;
the brightness adjusting method of the standby indicator lamp of the projector comprises the following steps:
when the condition that the projector enters a standby state is detected, acquiring the ambient brightness acquired by a light sensor, and determining the reference brightness of a standby indicator lamp based on the ambient brightness;
detecting obstacles in the surrounding environment of the projector based on the distance sensor array, constructing a virtual space model of the environment where the projector is located, and acquiring a first average distance between the projector and the boundary of the virtual space model;
detecting a human body in the surrounding environment of the projector based on the distance sensor array, and if the human body exists, acquiring a second average distance from the projector to the human body; if no human body exists, assigning the second average distance as the first average distance;
calculating the overall average distance of the first average distance and the second average distance, and determining a brightness gain coefficient of the standby indicator lamp according to the overall average distance, wherein the brightness gain coefficient is larger when the overall average distance is larger;
acquiring the current brightness of a standby indicator lamp of the projector, and determining the target brightness according to the reference brightness and the brightness gain coefficient;
and adjusting the actual brightness of the standby indicator lamp according to the current brightness and the target brightness until the actual brightness is the target brightness.
2. The method for adjusting the brightness of a standby indicator of a projector according to claim 1, wherein the step of determining the reference brightness of the standby indicator based on the ambient brightness comprises:
determining a first reference brightness of a standby indicator lamp based on the ambient brightness, wherein the ambient brightness is positively correlated with the first reference brightness;
acquiring environmental noise of the environment where the projector is located, and determining second reference brightness of the standby indicator light based on the environmental noise, wherein the environmental noise is positively correlated with the second reference brightness;
judging whether the environment of the projector is in a preset rest time period or not, and if so, taking the third reference brightness of the standby indicator light as the preset rest time period brightness; if the standby indicator light is not in the preset rest time period, the third reference brightness of the standby indicator light is the preset working time period brightness; the brightness of the preset rest time period is less than that of the preset working time period;
and taking the average value of the first reference brightness, the second reference brightness and the third reference brightness as the reference brightness of the standby indicator lamp.
3. The method for adjusting the brightness of a standby indicator of a projector according to claim 2, wherein the method for adjusting the brightness of a standby indicator of a projector further comprises:
when the projector is not in a standby state, controlling the projector to project a brightness preference test image to a projection surface, dividing the standard brightness of the brightness preference test image into 100 equal parts and displaying a preference progress bar of 0-100%, and acquiring the brightness preference of a user based on an operation instruction input by the user based on the preference progress bar, wherein the brightness preference of the user is a percentage value;
the step of determining the target brightness according to the reference brightness and the brightness gain coefficient includes:
and taking the product of the reference brightness, the brightness gain coefficient and the brightness preference of the user as the target brightness of the standby indicator lamp.
4. The method for adjusting the brightness of the standby indicator of a projector according to claim 3, wherein the step of adjusting the actual brightness of the standby indicator according to the current brightness and the target brightness further comprises:
the method comprises the steps of obtaining the use frequency of a projector in a past preset time period, and controlling the standby indicator light to flicker when the use frequency is larger than the preset frequency, wherein the standby indicator light flicker frequency is positively correlated with the use frequency.
5. The method for adjusting the brightness of the standby indicator of the projector according to claim 4, wherein the step of adjusting the actual brightness of the standby indicator according to the current brightness and the target brightness comprises:
judging whether the absolute value of the difference value between the target brightness and the current brightness is larger than a preset trigger threshold value or not;
if the absolute value of the difference is larger than a preset trigger threshold, increasing the current brightness by a preset unit brightness to be used as the actual brightness of the standby indicator lamp when the target brightness is larger than the current brightness; and when the target brightness is smaller than the current brightness, reducing the current brightness by a preset unit brightness to be used as the actual brightness of the standby indicator lamp.
6. The method for adjusting the brightness of a standby indicator of a projector according to claim 5, wherein the method for adjusting the brightness of a standby indicator of a projector further comprises:
and when detecting that the standby indicator lamp generates new actual brightness, delaying preset time and executing the step of acquiring the ambient brightness acquired by the light sensor.
7. The method for adjusting the brightness of a standby indicator of a projector according to claim 6, wherein the method for adjusting the brightness of a standby indicator of a projector further comprises:
when the ambient brightness acquired by the light sensor of the projector is detected to be changed from light to dark twice in preset unit time, the standby indicator lamp of the projector is controlled to be turned off, and the power of the projector is controlled to be off, wherein the light sensor and the standby indicator lamp are arranged at the same position of the projector shell, and the lighting direction of the light sensor is consistent with the light emitting direction of the standby indicator lamp.
8. The method as claimed in any one of claims 1 to 6, wherein the power supply pin of the standby indicator is electrically connected to a main control board of the projector, and when the brightness of the standby indicator of the projector needs to be adjusted, the duration of the high level of the power supply pin of the standby indicator in one clock cycle is adjusted based on the main control board activating the PWM function of the power supply pin of the standby indicator, wherein the greater the duration of the high level in one clock cycle, the greater the brightness of the standby indicator.
9. A projector, characterized in that the projector comprises a memory arranged on a main control board, a processor and a computer program stored on the memory and capable of running on the processor, wherein the computer program when executed by the processor realizes the steps of the method for adjusting the brightness of the standby indicator light of the projector according to any one of claims 1 to 8.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a computer program which, when being executed by a processor, implements the steps of the projector standby indicator light brightness adjustment method according to any one of claims 1 to 8.
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