CN115588404B - LED display screen control and adjustment system and method based on Internet of things - Google Patents
LED display screen control and adjustment system and method based on Internet of things Download PDFInfo
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- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
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Abstract
The invention discloses an LED display screen control and adjustment system and method based on the Internet of things, and relates to the technical field of display screen control and adjustment.
Description
Technical Field
The invention relates to the technical field of control and adjustment of display screens, in particular to a system and a method for controlling and adjusting an LED display screen based on the Internet of things.
Background
An LED display screen is a flat panel display, and is composed of small LED module panels, and is used for displaying various information such as text, images, and videos, which is the most common in computer applications, and in general, a calculated LED display screen can automatically adjust the display brightness according to the change of the ambient brightness when the brightness is automatically adjusted, or a user manually adjusts the brightness, but this brightness adjustment mode can only be simply automatically adjusted or manually adjusted, and the automatically adjusted display brightness may be the best, but is not the most used by the user, so how to adjust the brightness of the LED display screen to achieve the combination of automatic adjustment and manual adjustment makes the LED display screen meet the use habit of the user when the ambient brightness is used after automatic adjustment, which becomes a technical problem that needs to be solved urgently, and the problem that information safety is easily leaked under different use environments of the LED display screen, which causes the information safety of the user to be not guaranteed, for example: the display content is checked by others, so that unsafe use experience is brought to the user;
therefore, a system and a method for controlling and adjusting an LED display screen based on the internet of things are urgently needed to solve the technical problems.
Disclosure of Invention
The invention aims to provide an LED display screen control and adjustment system and method based on the Internet of things, and aims to solve the problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: an LED display screen control and adjustment method based on the Internet of things comprises the following steps:
s1, a user authorization control and adjustment system controls and adjusts an LED display screen;
s2, adjusting the brightness of the LED display screen according to the ambient brightness, and memorizing the ambient brightness and automatically displaying the brightness;
s3, skipping to manual brightness adjustment, wherein a user manually adjusts the brightness of the LED display screen and memorizes the manual display brightness;
s4, controlling the adjusting system to independently learn, analyzing the brightness use habit of the LED display screen of the user, realizing the matching of automatic display brightness and manual display brightness, improving the applicability of the LED display screen, and simultaneously reducing the step of manually adjusting the display brightness of the LED display screen by the user;
s5, detecting the environment brightness variation, analyzing brightness variation data, and performing environment safety evaluation;
and S6, selectively carrying out information safety protection according to the environmental safety evaluation result.
According to the technical scheme, in S2-S3, the automatic brightness adjusting unit is used for adjusting the automatic display brightness of the LED display screen according to the ambient brightness, and the data memory unit is used for memorizing the ambient brightness
Memorize the automatic display brightness as
；
The relationship between the ambient brightness and the automatic display brightness is as follows:
wherein,
indicating the perceived brightness of the user's eyes,
is the maximum brightness value of the LED display,
，
wherein
and
are all constant and are all provided with the same power,
；
perceived brightness of the user's eyes
Satisfy weber-fisher's law:
after the LED display screen is automatically adjusted by the brightness automatic adjusting unit, the manual brightness adjustment is skipped to, the manual display brightness of the LED display screen is adjusted by the user by the brightness manual adjusting unit, and the manual display brightness is memorized by the data memory unit
；
For the use of the LED display screen for n times, a training set is formed
、
And
；
subsets in the training sets L, P, and Q are in one-to-one correspondence.
Through the technical scheme, the functional relation between the automatic display brightness of the LED display screen and the ambient brightness is determined, and after the data memory unit is used for memorizing the display brightness of the LED display screen which is adjusted through the brightness automatic adjusting unit at each time, the manual display brightness of the LED display screen is adjusted through the brightness manual adjusting unit by a user, so that the habit of the user on the display brightness when the user uses the LED display screen in the later period is facilitated.
According to the above technical solution, in S4, the control and regulation system is based on a training set
And
constructing a functional relationship between ambient brightness and manually adjusted brightness
Wherein
and
are all constant coefficients;
the requirements and the use habits of the user on the display brightness of the LED display screen under different ambient brightness can be analyzed according to the functional relationship;
obtaining a relational expression between the ambient brightness and the manual adjustment brightness according to the relational expression between the ambient brightness and the automatic display brightness and the functional relation between the ambient brightness and the manual adjustment brightness:
the control and adjustment system can adjust the automatic display brightness of the LED display screen to be consistent with the manual display brightness of the user according to the ambient brightness.
Through the technical scheme, the data of manually adjusting the display brightness of the LED display screen at each time by the user is recorded, so that the control and adjustment system completes learning of habits of the user, the use habits of the user are fully integrated when the display brightness of the LED display screen is automatically adjusted according to the ambient brightness in the later period, the display brightness of the LED display screen can be automatically adjusted to the brightness which accords with the use habits of the user according to the ambient brightness, and convenience is provided for the user to use the LED display screen.
According to the above technical solution, in S5, the ambient brightness detection unit detects the ambient brightness once every time interval t to form another ambient brightness set
Wherein m represents that the ambient brightness detection unit detects the ambient brightness m times;
analyzing the ambient brightness by a brightness change analysis unit according to the following formula:
wherein,
representing ambient brightness
And the ambient brightness
The difference therebetween;
forming a set of ambient brightness change differences
；
Pair set
Calculating the difference between two adjacent numerical values;
when the difference value between two adjacent numerical values is less than or equal to a set threshold value, the change of the environment brightness is in accordance with the requirement, and the environment is safe;
when the difference value between two adjacent values is larger than the set threshold value, the change of the environment brightness is not qualified, and the environment is unsafe.
Because when the ambient brightness is changed in uniformity, the ambient brightness under the condition of natural change changes, the current use environment of the LED display screen is safe, but when the ambient brightness is changed in a sudden manner, possibly because an object approaches suddenly, light is shielded, at the moment, the detection setting of the ambient brightness detection unit on the ambient brightness is suddenly reduced, and the set of the ambient brightness detection unit is integrated
The variation of the difference between the two adjacent numerical values is increased, so that the environment is unsafe, and information leakage may occur due to the fact that the user is in the practical LED display screen.
According to the technical scheme, in S6, an environment safety evaluation unit is used for sending the result of the change of the environment brightness to an information safety protection unit;
when the environment is safe, the LED display screen is normally used by a user;
when the environment is unsafe, the information safety protection unit is used for adjusting the display brightness of the LED display screen used by the user to be the lowest, the information displayed on the LED display screen of the user is shielded, the information safety of the user is protected, the signal input detection unit is used for detecting whether the user carries out signal input of manual operation, and if the user carries out manual operation, the automatic brightness adjustment unit is used for adjusting the display brightness of the LED display screen to be in a normal state.
An LED display screen control and regulation system based on the Internet of things comprises an authority granting module, a data acquisition module, a brightness regulation module, a habit analysis module and an environment analysis module;
the permission granting module is used for granting a control and regulation system to control and regulate the display brightness of the LED display screen; the data acquisition module is used for detecting the ambient brightness data and the signal input data; the brightness adjusting module is used for adjusting the display brightness of the LED display screen; the habit analyzing module is used for analyzing habit display brightness of a user when the user uses the LED display screen under different environment brightness, so that the display brightness of the LED display screen can be automatically adjusted to the habit display brightness of the user under different environment brightness by controlling the adjusting system; the environment analysis module is used for analyzing the ambient brightness of the LED display screen used by the user, judging whether the risk of information leakage exists or not, realizing information safety protection on the user and reducing the risk of information leakage of the user.
According to the technical scheme, the data acquisition module comprises an ambient brightness detection unit and a signal input detection unit;
the environment brightness detection unit is used for detecting the environment brightness data of the LED display screen; the signal input detection unit is used for detecting an input signal of the LED display screen controlled by a user.
According to the technical scheme, the brightness adjusting module comprises an automatic brightness adjusting unit and a manual brightness adjusting unit;
the brightness automatic adjusting unit is used for automatically adjusting the display brightness of the LED display screen according to the change of the ambient brightness, and is also used for automatically adjusting the display brightness of the LED display screen according to the use habits of the user and the ambient brightness after analyzing the use habits of the user; and the manual brightness adjusting unit is used for manually adjusting the display brightness of the LED display screen by a user according to the ambient brightness and the use habit.
According to the technical scheme, the habit analyzing module comprises a data memory unit, a data statistical unit and a machine learning unit;
the data memory unit is used for recording the display brightness adjusting data of the brightness automatic adjusting unit and the brightness manual adjusting unit when the ambient brightness changes every time; the data statistical unit is used for recording data memorability statistics of the data memory unit to form a training set; the machine learning unit is used for autonomously learning the use habits of the user according to the training set counted by the data counting unit, so that the display brightness of the LED display screen is automatically adjusted to the display brightness of the user habits according to the brightness change of the environment in the later period.
According to the technical scheme, the environment analysis module comprises a brightness change analysis unit, an environment safety evaluation unit and an information safety protection unit;
the brightness change analysis unit is used for analyzing the environment brightness change condition under the LED display screen using environment; the environment safety evaluation unit is used for analyzing the safety of the environment brightness change in the LED display screen using environment; the information safety protection unit is used for carrying out safety protection on information displayed on the LED display screen under the condition that the ambient brightness change of the LED display screen in the using environment is unsafe, so that the information leakage is avoided, the environmental safety analysis can be carried out independently according to the ambient brightness change, and the information safety of using the LED display screen by a user in different environments can be effectively ensured.
Compared with the prior art, the invention has the beneficial effects that:
1. the machine learning unit is arranged, so that the display brightness habit of a user when using the LED display screen can be learned according to the environment brightness, the automatic display brightness and the manual display brightness, the display brightness of the LED display screen can be automatically adjusted to the display brightness habit of the user according to the environment brightness, the steps of manually adjusting the display brightness of the LED display screen by the user are reduced, the user can use the LED display screen more smoothly, and intelligent and personalized display is really realized.
2. The environment analysis module is arranged for analyzing the detection data of the environment brightness detection unit, and can judge the environment safety of the LED display screen used by the user, so that when the environment of the LED display screen used by the user has the risk of information leakage, the information safety of the user can be protected in time by adjusting the display brightness of the LED display screen, the display content of the LED display screen is prevented from being leaked by the user under the condition of unconsciousness, and the display brightness and the information safety of the LED display screen are combined with each other, so that the LED display screen is safer to use.
Drawings
FIG. 1 is a schematic flow chart illustrating steps of a method for controlling and adjusting an LED display screen based on the Internet of things according to the invention;
fig. 2 is a schematic diagram of a module composition of an LED display screen control and adjustment system based on the internet of things.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the invention provides the following technical solutions, a method for controlling and adjusting an LED display screen based on the internet of things, the method for controlling and adjusting includes the following steps:
s1, a user authorization control and adjustment system controls and adjusts an LED display screen;
s2, adjusting the brightness of the LED display screen according to the ambient brightness, and memorizing the ambient brightness and automatically displaying the brightness;
specifically, the automatic brightness adjusting unit is used for adjusting the automatic display brightness of the LED display screen according to the ambient brightness, and the data memory unit is used for memorizing the ambient brightness
Memorize the automatic display brightness as
；
The relationship between the ambient brightness and the automatic display brightness is as follows:
wherein,
representing the perceived brightness of the user's eyes, obtained by measuring the display with a spectral color luminance meter,
is the maximum brightness value of the LED display,
，
wherein
and
are all constant and are all provided with the same power,
；
perceived brightness of the user's eyes
Satisfy weber-fisher's law:
s3, skipping to manual brightness adjustment, wherein a user manually adjusts the brightness of the LED display screen and memorizes the manual display brightness;
in particular, the method comprises the following steps of,after the LED display screen is automatically adjusted by the brightness automatic adjusting unit, the manual brightness adjustment is skipped to, the manual display brightness of the LED display screen is adjusted by the user by the brightness manual adjusting unit, and the manual display brightness is memorized by the data memory unit
；
When the number of times of manual brightness adjustment reaches a set threshold value, the user does not need to skip to the manual brightness adjustment, and the display brightness of the LED display screen does not need to be manually adjusted by the user under the condition of obtaining enough training sets, so that the influence on the normal use of the LED display screen by the user is avoided;
for the use of the LED display screen for n times, a training set is formed
、
And
；
subsets in the training sets L, P, and Q are in one-to-one correspondence.
Through the technical scheme, the functional relation between the automatic display brightness of the LED display screen and the ambient brightness is determined, and after the data memory unit is used for memorizing the display brightness of the LED display screen which is adjusted through the brightness automatic adjusting unit at each time, the manual display brightness of the LED display screen is adjusted through the brightness manual adjusting unit by a user, so that the habit of the user on the display brightness when the user uses the LED display screen in the later period is facilitated.
S4, controlling the adjusting system to independently learn, analyzing the brightness use habit of the LED display screen of the user, realizing the matching of automatic display brightness and manual display brightness, improving the applicability of the LED display screen, and simultaneously reducing the step of manually adjusting the display brightness of the LED display screen by the user;
specifically, the control and regulation system is based on the training set
And
constructing a functional relationship between ambient brightness and manually adjusted brightness
Wherein
and
are all constant coefficients;
the requirements and the use habits of the user on the display brightness of the LED display screen under different environment brightness can be analyzed according to the functional relationship;
obtaining a relational expression between the ambient brightness and the manual adjustment brightness according to the relational expression between the ambient brightness and the automatic display brightness and the functional relation between the ambient brightness and the manual adjustment brightness:
the indication control and adjustment system can adjust the automatic display brightness of the LED display screen to be consistent with the manual display brightness of the user according to the ambient brightness.
Through the technical scheme, the data recording of the display brightness of the LED display screen is manually adjusted by the user each time, so that the control and adjustment system completes the learning of the habit of the user, the use habit of the user is fully integrated when the display brightness of the LED display screen is automatically adjusted according to the ambient brightness in the later period, the display brightness of the LED display screen can be automatically adjusted to be in accordance with the use habit of the user according to the ambient brightness, and the convenience is provided for the user to use the LED display screen.
S5, detecting the environment brightness variation, analyzing brightness variation data, and performing environment safety evaluation;
specifically, the ambient brightness detection unit detects the ambient brightness once every time interval t to form another ambient brightness set
Wherein m represents that the ambient brightness detection unit detects the ambient brightness m times;
analyzing the ambient brightness by a brightness change analysis unit according to the following formula:
wherein,
representing ambient brightness
And the ambient brightness
The difference between them;
forming a set of ambient brightness change differences
；
To the collection
Calculating the difference between two adjacent numerical values;
when the difference value between two adjacent numerical values is less than or equal to a set threshold value, the change of the environment brightness is in accordance with the requirement, and the environment is safe;
when the difference value between two adjacent values is larger than the set threshold value, the change of the environment brightness is not qualified, and the environment is unsafe.
Because when the ambient brightness is changed in uniformity, the color of the LED lamp belongs toAmbient brightness variations under natural variations, for example: in the evening, the ambient brightness gradually decreases, so the current use environment of the LED display screen is safe, but when the change of the ambient brightness is a sudden change, it may be because there is an object suddenly approaching, for example: the user is using the LED display screen, and someone is close to suddenly, has caused the sheltering from to light, and at this moment, ambient brightness detecting element can reduce suddenly to ambient brightness's detection setting, and the set
The variation of the difference between the two adjacent numerical values is increased, so that the environment is unsafe, and information leakage may occur due to the fact that the user is in the practical LED display screen.
And S6, selectively performing information safety protection according to the environmental safety evaluation result.
Specifically, an environmental security evaluation unit is used for sending the result of the environmental brightness change to an information security protection unit;
when the environment is safe, the LED display screen is normally used by a user;
when the environment is unsafe, the information safety protection unit is used for adjusting the display brightness of the LED display screen used by the user to be the lowest, the information displayed on the LED display screen of the user is shielded, the information safety of the user is protected, the signal input detection unit is used for detecting whether the user carries out signal input of manual operation, and if the user carries out manual operation, the automatic brightness adjustment unit is used for adjusting the display brightness of the LED display screen to be in a normal state.
As shown in fig. 2, the control and regulation system for the LED display screen based on the internet of things comprises an authority granting module, a data acquisition module, a brightness regulation module, a habit analysis module and an environment analysis module;
the authority granting module is used for granting the control and regulation system to control and regulate the display brightness of the LED display screen;
the data acquisition module is used for detecting the ambient brightness data and the signal input data;
specifically, the data acquisition module comprises an ambient brightness detection unit and a signal input detection unit;
the environment brightness detection unit is used for detecting environment brightness data of the LED display screen; the signal input detection unit is used for detecting an input signal of a user for operating the LED display screen, for example: and the user controls the display content on the LED display screen through the mouse.
The brightness adjusting module is used for adjusting the display brightness of the LED display screen;
specifically, the brightness adjusting module comprises a brightness automatic adjusting unit and a brightness manual adjusting unit;
the brightness automatic adjusting unit is used for automatically adjusting the display brightness of the LED display screen according to the change of the ambient brightness, and is also used for automatically adjusting the display brightness of the LED display screen according to the use habits of the user and the ambient brightness after analyzing the use habits of the user; the manual brightness adjusting unit is used for manually adjusting the display brightness of the LED display screen by a user according to the ambient brightness and the use habit.
The habit analysis module is used for analyzing habit display brightness of a user when the user uses the LED display screen under different environment brightness, so that the display brightness of the LED display screen can be automatically adjusted to the habit display brightness of the user under different environment brightness by controlling the adjusting system;
specifically, the habit analyzing module comprises a data memory unit, a data statistical unit and a machine learning unit;
the data memory unit is used for recording the display brightness adjusting data of the brightness automatic adjusting unit and the brightness manual adjusting unit when the ambient brightness changes every time; the data statistical unit is used for recording data memorability statistics of the data memory unit to form a training set; the machine learning unit is used for independently learning the use habits of the user according to the training set counted by the data counting unit, so that the display brightness of the LED display screen is automatically adjusted to the display brightness of the user habits according to the brightness change of the environment in the later period.
The environment analysis module is used for analyzing the ambient brightness of the LED display screen used by the user, judging whether the risk of information leakage exists or not, realizing the information safety protection of the user and reducing the risk of information leakage of the user;
specifically, the environment analysis module comprises a brightness change analysis unit, an environment safety evaluation unit and an information safety protection unit;
the brightness change analysis unit is used for analyzing the ambient brightness change condition under the use environment of the LED display screen; the environment safety evaluation unit is used for analyzing the safety of the environment brightness change in the LED display screen using environment; the information security protection unit is used for carrying out security protection on the information displayed on the LED display screen under the unsafe condition of the ambient brightness change of the LED display screen service environment, avoiding leakage of the information, so that the environmental security analysis can be carried out autonomously according to the ambient brightness change, and the information security of the LED display screen used by a user under different environments can be effectively ensured, for example: the user uses the LED display screen on the subway, when someone was close to the LED display screen, can cause the ambient brightness around the LED display screen to change, at this moment, can carry out information security's protection through transferring the luminance of LED display screen to minimum state.
The first embodiment is as follows:
the user authorization control and adjustment system controls and adjusts the LED display screen;
detecting the ambient brightness once every time interval t =30s by using an ambient brightness detection unit to form another ambient brightness set
；
Analyzing the ambient brightness by a brightness change analysis unit according to the following formula:
wherein,
representing ambient brightness
And the ambient brightness
The difference between them;
forming a set of ambient brightness change differences
；
To the collection
Calculating the difference between two adjacent numerical values;
if the difference value between two adjacent numerical values is less than or equal to the set threshold value of 1.5, the change of the environment brightness is in accordance with the requirement, and the environment is safe;
the LED display screen is normally used by a user.
The second embodiment: the user authorization control and adjustment system controls and adjusts the LED display screen;
detecting the ambient brightness once every time interval t =30s by using an ambient brightness detection unit to form another ambient brightness set
；
Analyzing the ambient brightness by a brightness change analysis unit according to the following formula:
wherein,
representing ambient brightness
And the ambient brightness
The difference therebetween;
forming a set of ambient brightness change differences
；
To the collection
Calculating the difference between two adjacent numerical values;
if the difference between two adjacent values is greater than the set threshold value 1.5, the change of the ambient brightness is not satisfactory, and the environment is unsafe.
The display brightness of the LED display screen used by the user is adjusted to be the lowest by the information safety protection unit, whether the user performs signal input of manual operation or not is detected by the signal input detection unit, and if the user performs the manual operation, the display brightness of the LED display screen is adjusted to be in a normal state by the brightness automatic adjustment unit.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. A control and regulation method for an LED display screen based on the Internet of things is characterized by comprising the following steps: the control and regulation method comprises the following steps:
s1, a user authorization control and adjustment system controls and adjusts an LED display screen;
s2, adjusting the brightness of the LED display screen according to the ambient brightness, and memorizing the ambient brightness and automatically displaying the brightness;
s3, skipping to manual brightness adjustment, wherein a user manually adjusts the brightness of the LED display screen and memorizes the manual display brightness;
s4, controlling the adjusting system to learn autonomously, and analyzing the brightness use habit of the LED display screen of the user;
s5, detecting the environment brightness variation, analyzing brightness variation data, and performing environment safety evaluation;
s6, selectively carrying out information safety protection according to the environmental safety evaluation result;
in S2-S3, the automatic brightness of the LED display screen is adjusted by the brightness automatic adjusting unit according to the ambient brightness, and the ambient brightness is memorized to be L by the data memory unit i Memorizing the automatic display brightness of P i ；
The relationship between the ambient brightness and the automatic display brightness is as follows:
P i =A/P max =K ’ *lg(L i )+K 0 ’ ；
wherein A represents the perceived brightness of the user's eyes, P max Maximum brightness value, K, of the LED display ’ =K/P max ， K 0 ’ =K 0 /P max Wherein, K and K 0 Are all constant, P i ∈[0,1]；
The perceived brightness a of the user's eyes satisfies the weber-fisher law:
A=K*lg(L i )+K 0 ；
after the LED display screen is automatically adjusted by the brightness automatic adjusting unit, the manual brightness adjustment is skipped to, the manual display brightness of the LED display screen is adjusted by a user by the brightness manual adjusting unit, and the manual display brightness Q is memorized by the data memory unit i ；
For n times of usage of the LED display screen, a training set L = { L is formed 1 ,L 2 ,L 3 ,…,L n }、P ={P 1 ,P 2 ,P 3 ,…,P n And Q = { Q = 1 ,Q 2 ,Q 3 ,…,Q n }；
Subsets in the training sets L, P and Q are in one-to-one correspondence;
in S4, the control and regulation system is based on the training set L = { L = { (L) 1 ,L 2 ,L 3 ,…,L n And Q = { Q = 1 ,Q 2 ,Q 3 ,…,Q n Constructing a functional relation Q between the ambient brightness and the manually adjusted brightness i =J*L i +J 0 Wherein J and J 0 Are all constant coefficients;
obtaining a relational expression between the ambient brightness and the manual adjustment brightness according to the relational expression between the ambient brightness and the automatic display brightness and the functional relation between the ambient brightness and the manual adjustment brightness:
P i = K ’ *lg[(Q i -J 0 )/J]+K 0 ’ ；
the control and adjustment system can adjust the automatic display brightness of the LED display screen to be consistent with the manual display brightness of the user according to the ambient brightness.
2. The LED display screen control and adjustment method based on the Internet of things according to claim 1, characterized in that: in S5, the ambient brightness detection unit detects the ambient brightness at intervals of time t, set U = { U) constituting another ambient brightness 1 ,U 2 ,U 3 ,…,U m M represents that the ambient brightness detection unit detects the ambient brightness m times;
analyzing the ambient brightness by a brightness change analysis unit according to the following formula:
U k k+1 =|U k+1 -U k |；
wherein, U k k+1 Representing ambient brightness U k+1 And ambient brightness U k The difference between them;
set U forming ambient brightness variation difference values ’ ={U 1 2 ,U 2 3 ,U 3 4 ,…,U m-1 m }；
To set U ’ Calculating the difference between two adjacent numerical values;
when the difference value between two adjacent numerical values is less than or equal to a set threshold value, the change of the environment brightness is in accordance with the requirement, and the environment is safe;
when the difference value between two adjacent values is larger than the set threshold value, the change of the environment brightness is not qualified, and the environment is unsafe.
3. The LED display screen control and adjustment method based on the Internet of things as claimed in claim 2, wherein: in S6, an environmental security evaluation unit is used for sending the result of the environmental brightness change to an information security protection unit;
when the environment is safe, the LED display screen is normally used by a user;
when the environment is unsafe, the display brightness of the LED display screen used by the user is adjusted to be the lowest by the information safety protection unit, whether the user performs signal input of manual operation or not is detected by the signal input detection unit, and if the user performs the manual operation, the display brightness of the LED display screen is adjusted to be in a normal state by the brightness automatic adjustment unit.
4. An LED display screen control and regulation system based on the Internet of things, which executes the LED display screen control and regulation method based on the Internet of things as claimed in any one of claims 1 to 3, and is characterized in that: the control and regulation system comprises an authority granting module, a data acquisition module, a brightness regulation module, a habit analysis module and an environment analysis module;
the authority granting module is used for granting a control and regulation system to control and regulate the display brightness of the LED display screen; the data acquisition module is used for detecting the ambient brightness data and the signal input data; the brightness adjusting module is used for adjusting the display brightness of the LED display screen; the habit analyzing module is used for analyzing habit display brightness of a user when the user uses the LED display screen under different environment brightness; the environment analysis module is used for analyzing the ambient brightness of the LED display screen used by the user and judging whether the risk of information leakage exists or not.
5. The LED display screen control and regulation system based on the Internet of things of claim 4, wherein: the data acquisition module comprises an ambient brightness detection unit and a signal input detection unit;
the environment brightness detection unit is used for detecting environment brightness data of the LED display screen; the signal input detection unit is used for detecting an input signal of the LED display screen controlled by a user.
6. The LED display screen control and regulation system based on the Internet of things of claim 5, wherein: the brightness adjusting module comprises a brightness automatic adjusting unit and a brightness manual adjusting unit;
the brightness automatic adjusting unit is used for automatically adjusting the display brightness of the LED display screen according to the change of the ambient brightness, and is also used for automatically adjusting the display brightness of the LED display screen according to the use habits of the user and the ambient brightness after analyzing the use habits of the user; and the manual brightness adjusting unit is used for manually adjusting the display brightness of the LED display screen by a user according to the ambient brightness and the use habit.
7. The LED display screen control and regulation system based on the Internet of things of claim 6, wherein: the habit analysis module comprises a data memory unit, a data statistics unit and a machine learning unit;
the data memory unit is used for recording display brightness adjusting data of the brightness automatic adjusting unit and the brightness manual adjusting unit when the ambient brightness changes every time; the data statistical unit is used for recording data memorability statistics of the data memory unit to form a training set; the machine learning unit is used for autonomously learning the use habits of the user according to the training set counted by the data counting unit.
8. The LED display screen control and regulation system based on the Internet of things of claim 7, wherein: the environment analysis module comprises a brightness change analysis unit, an environment safety evaluation unit and an information safety protection unit;
the brightness change analysis unit is used for analyzing the environment brightness change condition under the LED display screen using environment; the environment safety evaluation unit is used for analyzing the safety of the environment brightness change in the LED display screen using environment; the information safety protection unit is used for carrying out safety protection on the information displayed on the LED display screen under the condition that the change of the ambient brightness of the use environment of the LED display screen is unsafe.
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