CN104731490B - screen control method and device - Google Patents

Abstract

The present invention is applicable to the technical field of intelligent terminals, and provides a screen control method and device. The method includes: acquiring the potential value output by the Hall sensor; and acquiring the output value of the proximity sensor when the potential value is less than the first threshold ; Determine the state of the protective cover worn by the smart terminal relative to the screen of the smart terminal according to the output value of the proximity sensor; Setting a plurality of output values within a time range; determining the change law of the multiple output values of the acceleration sensor, and setting the screen state of the smart terminal according to the change law. The invention solves the problem of Hall sensor judgment error caused by the displacement of the protective cover or a little distance away from the screen when the protective cover is fitted on the screen, improves the accuracy of the screen-off and bright-screen control, and prevents the smart terminal from The screen in the pocket or bag turns on by mistake.

Description

Screen control method and device

technical field

The invention belongs to the technical field of intelligent terminals, and in particular relates to a screen control method and device.

Background technique

Existing smart terminals are equipped with protective covers. This type of smart terminal is usually combined with a protective case to control the terminal's screen to turn on or off. The existing technology is mainly realized by installing a Hall device on the main board of the smart terminal and installing a magnet on the protective cover. When the protective cover is closed, the magnet causes a potential change inside the Hall device, triggers an interruption, and turns off the screen. , which is equivalent to pressing the power button; when the protective cover is far away, the interrupt is triggered again, so that the screen lights up, which is equivalent to pressing the power button again.

In order to allow the protective cover to move slightly up, down, left, and right relative to the screen after it is closed, the design of the protective cover often has a certain space margin. However, the area where the Hall sensor senses the magnet is limited. When the user puts the smart terminal in his pocket or bag and walks around, it is easy to cause the smart terminal to shake, causing the screen to light up by mistake, thereby increasing the power consumption of the smart terminal. . In view of the above problems, the prior art also uses a proximity sensor to detect the distance or proximity of the protective cover, so as to make up for the deficiency of the Hall sensor. However, the sensitivity of the proximity sensor is also affected by the color of the protective case. The black material of the protective case will absorb infrared rays, resulting in inaccurate detection of the proximity sensor and the problem of false lighting of the screen.

Contents of the invention

In view of this, the embodiments of the present invention provide a screen control method and device, so as to improve the accuracy of the smart terminal controlling the screen to be turned on and off.

In a first aspect, a screen control method is provided, which is applied to a smart terminal including an acceleration sensor, and the method includes:

Obtain the potential value output by the Hall sensor;

acquiring an output value of the proximity sensor when the potential value is less than a first threshold;

determining the state of the protective cover worn by the smart terminal relative to the screen of the smart terminal according to the output value of the proximity sensor;

When the state of the protective cover relative to the screen is far away, acquiring a plurality of output values of the acceleration sensor within a preset time range;

Determine the change law of the multiple output values of the acceleration sensor, and set the screen state of the smart terminal according to the change law.

Further, the acquiring multiple output values of the acceleration sensor within a preset time range includes:

Obtain the absolute value of the Y-axis component of each output value of the multiple output values of the acceleration sensor within the preset time range.

Further, the determining the change law of multiple output values of the acceleration sensor, and setting the screen state of the smart terminal according to the change law includes:

determining the change law of the absolute value of the Y-axis component;

When the change rule of the absolute value of the Y-axis component is that it drops from any value in the first preset range to 0, and rises from 0 to any value in the first preset range, the smart terminal The screen is set to the bright screen state.

Further, the determining the change law of multiple output values of the acceleration sensor, and setting the screen state of the smart terminal according to the change law includes:

If the change law of the absolute value of the Y-axis component is within the second preset range, the screen of the smart terminal is set to be in a screen-off state.

Further, the first preset range is a numerical range centered on the acceleration of gravity value and satisfying the first discrete value;

The second preset range is a numerical range centered on the acceleration of gravity value and satisfying a second discrete value, and the first discrete value is smaller than the second discrete value.

In a second aspect, a screen control device is provided, which is applied to a smart terminal including an acceleration sensor, and the device includes:

The first obtaining module is used to obtain the potential value output by the Hall sensor;

A second acquisition module, configured to acquire the output value of the proximity sensor when the potential value is less than the first threshold;

A state determination module, configured to determine the state of the protective cover worn by the smart terminal relative to the screen of the smart terminal according to the output value of the proximity sensor;

A third acquiring module, configured to acquire a plurality of output values of the acceleration sensor within a preset time range when the state of the protective cover relative to the screen is far away;

A setting module, configured to determine the change law of the multiple output values of the acceleration sensor, and set the screen state of the smart terminal according to the change law.

Further, the third acquisition module includes:

The acquiring unit is configured to acquire the absolute value of the Y-axis component of each output value of the multiple output values of the acceleration sensor within a preset time range.

Further, the setting module includes:

a rule determination unit, configured to determine the change rule of the absolute value of the Y-axis component;

Bright screen unit, used when the change rule of the absolute value of the Y-axis component is to drop from any value in the first preset range to 0, and rise from 0 to any value in the first preset range , setting the screen of the smart terminal to a bright screen state.

Further, the setting module also includes:

A screen-off unit, configured to set the screen of the smart terminal to a screen-off state when the change rule of the absolute value of the Y-axis component is within a second preset range.

Further, the first preset range is a numerical range centered on the acceleration of gravity value and satisfying the first discrete value;

The second preset range is a numerical range centered on the acceleration of gravity value and satisfying a second discrete value, and the first discrete value is smaller than the second discrete value.

Compared with the prior art, the embodiment of the present invention adds an acceleration sensor to detect the motion state of the smart terminal in the process of controlling the screen to be turned on and off; the smart terminal obtains the potential value output by the Hall sensor in real time; When it is less than the first threshold, the output value of the proximity sensor is obtained; according to the output value of the proximity sensor, the state of the protective cover worn by the smart terminal relative to the screen of the smart terminal is determined; when the protective cover is relative to the screen When the state is away from the state, obtain multiple output values of the acceleration sensor within the preset time range; determine the change law of the multiple output values of the acceleration sensor, wherein the change law of the acceleration sensor output value reflects the intelligence The motion state of the terminal; finally, the screen state of the smart terminal is set according to the change rule; thereby solving the problem of Hall sensor judgment error caused by the displacement of the protective cover or a little distance away from the screen when the protective cover is placed on the screen The problem is to improve the accuracy of the smart terminal to control the lighting and extinguishing of the screen, and to avoid the wrong screen turning on when the smart terminal is in the pocket or in the bag.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.

FIG. 1 is a flow chart of the implementation of the screen control method provided by Embodiment 1 of the present invention;

FIG. 2 is a structural diagram of a screen control device provided in Embodiment 2 of the present invention.

detailed description

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

In the embodiment of the present invention, an acceleration sensor is added to detect the motion state of the smart terminal during the process of controlling the screen to be turned on and off; the smart terminal acquires the potential value output by the Hall sensor in real time; when the potential value is less than the first threshold value, the The output value of the proximity sensor; determine the state of the protective cover worn by the smart terminal relative to the screen of the smart terminal according to the output value of the proximity sensor; when the protective cover is in a far away state relative to the screen, Obtaining multiple output values of the acceleration sensor within a preset time range; determining the change law of the multiple output values of the acceleration sensor, wherein the change law of the output value of the acceleration sensor reflects the motion state of the smart terminal; finally according to The change rule sets the screen state of the smart terminal; thereby solving the problem of Hall sensor judgment error caused by the displacement of the protective cover or a little distance away from the screen when the protective cover is closed on the screen, and improving the control of the smart terminal. The accuracy with which the screen lights up and goes out. Embodiments of the present invention also provide corresponding devices, which will be described in detail below.

Embodiment one

Fig. 1 shows the implementation process of the screen control method provided by the embodiment of the present invention, and for the convenience of description, only the parts related to the present invention are shown.

In the embodiment of the present invention, the method is applied to a smart terminal, and the smart terminal includes but is not limited to a smart phone, a tablet computer, and the like. The smart terminal wears a protective cover. The protective cover is provided with a magnet, and the corresponding smart terminal is provided with a Hall sensor for detecting the strength of the magnetic field generated by the magnet. The present invention preliminarily divides the state of the protective case relative to the screen according to the different distances of the protective case from the screen, including the far state and the close state, and the potential values generated by the magnetic field strength detected by the Hall sensor are different in different states. A proximity sensor is also provided on the smart terminal. Similarly, the infrared light energy reflected back by the protective cover detected by the proximity sensor is different in different states. According to the value of the infrared light energy value reflected by the protective cover detected by the proximity sensor, it can also be determined that the protective cover is relative to the screen. status. The embodiment of the present invention firstly determines whether to start the process of judging the screen state by acquiring the magnitude of the potential value detected by the Hall sensor; Sets the status relative to the smart terminal screen. Further, in the embodiment of the present invention, an acceleration sensor is further provided on the smart terminal, so as to determine the motion state of the smart terminal through the acceleration sensor after the screen state is determined.

As shown in Figure 1, the method includes:

In step S101, the potential value output by the Hall sensor is acquired.

In the embodiment of the present invention, the smart terminal acquires the potential value detected by the Hall sensor in real time. When the protective cover is close to the screen, the potential value detected by the Hall sensor is large; when the protective cover is far away from the screen, the potential value detected by the Hall sensor is small.

In step S102, when the potential value is smaller than the first threshold, the output value of the proximity sensor is acquired.

The present invention counts the occurrence probability of the potential value detected by the Hall sensor when the user opens the protective cover to light up the screen in advance, and sets the first threshold according to the probability, and the first threshold is used to judge that the protective cover is currently relative to the screen. Whether the distance is enough to trigger the smart terminal to light up the screen. When the potential value detected by the Hall sensor is less than the first threshold, it generally indicates that the protective cover is far away from the screen of the smart terminal, but it may also be a detection error caused by a limited detection area of the Hall sensor for the magnet. In order to solve this detection error, the embodiment of the present invention continues to obtain the output value of the proximity sensor to further determine the state of the protective case relative to the screen.

In step S103, the state of the protective case worn by the smart terminal relative to the screen of the smart terminal is determined according to the output value of the proximity sensor.

In the embodiment of the present invention, the state of the protective cover relative to the screen includes a far away state and a close state. The proximity sensor emits infrared light to the protective cover, and receives and outputs the infrared light reflected back on the protective cover. The received reflected infrared light energy reflects whether the protective cover is far away from the screen of the smart terminal or not. close to state. When the received reflected infrared light energy is greater, it indicates that the protective cover is closer to the screen; otherwise, the received reflected infrared light energy is smaller, indicating that the protective cover is farther away from the screen. Preferably, a proximity threshold and a distance threshold can be preset; when the output value of the proximity sensor is greater than the preset proximity threshold, it is determined that the state of the protective cover relative to the screen is a proximity state; otherwise, when the When the output value of the proximity sensor is less than the preset distance threshold, it is determined that the state of the protective case relative to the screen is a state of distance.

In step S104, when the state of the protective case relative to the screen is far away, a plurality of output values of the acceleration sensor within a preset time range are acquired.

In the prior art, the screen of the smart terminal is directly turned on after acquiring that the state of the protective case relative to the screen is in the far-away state. The difference is that, when the present invention determines that the protective cover is far away from the screen, it continues to acquire multiple output values of the acceleration sensor within a preset time range, and judges by the multiple output values of the acceleration sensor The current motion status of the smart terminal. Exemplarily, the preset time range may be 1 second, 2 seconds, etc., and the size thereof is determined according to actual usage conditions. Preferably, the step S104 also includes:

Obtain the absolute value of the Y-axis component of each output value of the multiple output values of the acceleration sensor within the preset time range.

In step S105, determine the change law of multiple output values of the acceleration sensor, and set the screen state of the smart terminal according to the change law.

When the user puts the smart terminal in the pocket or walks around in the bag, the smart terminal will shake accordingly, which will easily cause the protective cover to move up, down, left, and right relative to the screen. In the embodiment of the present invention, the acceleration sensor is preferably used to detect the motion state of the smart terminal, and the screen is set to be on or off according to the change law of the absolute value of the Y-axis component in the output value of the acceleration sensor. Therefore, step S105 specifically includes:

determining the change law of the absolute value of the Y-axis component;

When the change rule of the absolute value of the Y-axis component is that it drops from any value in the first preset range to 0, and rises from 0 to any value in the first preset range, the smart terminal The screen is set to the bright screen state.

If the change law of the absolute value of the Y-axis component is within the second preset range, the screen of the smart terminal is set to be in a screen-off state.

The present invention uses the law that the absolute value of the Y-axis component of the acceleration of the smart terminal shakes slightly around the earth's gravitational acceleration value of 9.8m/s ² when the smart terminal shakes, and sets a second preset range. The second preset range is a numerical range centered on the acceleration of gravity and satisfying the second discrete value, for example, when the acceleration of gravity is 9.8m/s and the ^second discrete value is 1, the second preset range It is [8.8-10.8], and the unit is m/s ² . When the smart terminal is taken out of the pocket, the absolute value of the component of its acceleration on the Y axis will show a change process from the absolute value of the acceleration of gravity to 0 and then rise to the absolute value of the acceleration of gravity. Considering that there are deviations in the acceleration of gravity values in different regions, the present invention sets a first preset range, the first preset range is a numerical range centered on the acceleration of gravity value and satisfying the first discrete value, and the first preset range is A discrete value is smaller than the above-mentioned second discrete value. Exemplarily, when the gravitational acceleration value is 9.8 m/s ² and the first discrete value is 0.1, the first preset range is [9.7-9.9], and the unit is m/s ² . It should be noted that, in the embodiment of the present invention, the first discrete value represents the degree of dispersion of the data within the first preset range relative to the acceleration of gravity value; the second discrete value represents the degree of dispersion within the second preset range The degree of dispersion of the data relative to the value of the acceleration of gravity. By detecting whether the absolute value of the Y-axis component drops from any value in the first preset range to 0 and rises from 0 to any value in the first preset range, it is determined whether the smart terminal is pulled out of the pocket and determining whether the smart terminal shakes due to the user walking by detecting whether the absolute value of the Y-axis component shakes within a second preset range.

When the absolute value of the Y-axis component drops from any value in the first preset range to 0 and rises from 0 to any value in the first preset range, it means that the smart terminal is taken out of the pocket, and the If the smart terminal is in the off-screen state, set it to the on-screen state; otherwise, keep the smart terminal in the on-screen state. When the absolute value of the Y-axis component shakes within the second preset range, it indicates that the smart terminal is shaking up and down in the pocket (usually caused by the user walking), at this time, it is determined that the Hall sensor is a false detection, Set or keep the smart terminal in the off-screen state; thereby making up for the problem of Hall sensor judgment error caused by the slight displacement of the protective cover or a little distance away from the screen when the protective cover is closed on the screen, effectively solving the problem of smart terminal The problem of mistakenly turning on the screen in the trouser pocket, clothes pocket or bag improves the accuracy of the screen control of the smart terminal.

Embodiment two

FIG. 2 shows the composition and structure of the screen control method provided by Embodiment 2 of the present invention. For the convenience of description, only the parts related to the present invention are shown.

In the embodiment of the present invention, the device is used to implement the screen control method described in the embodiment of FIG. 1 , and may be a built-in software unit, a hardware unit or a unit combined with software and hardware of the smart terminal. The smart terminal is provided with a Hall sensor and a proximity sensor, and is wearing a protective cover, and the protective cover is provided with a magnet. In the embodiment of the present invention, firstly, the Hall sensor detects the magnetic field intensity generated by the magnet to determine whether to start the process of judging the screen state; The state of the set relative to the smart terminal. In the embodiment of the present invention, an acceleration sensor is further provided on the smart terminal, so as to determine the motion state of the smart terminal through the acceleration sensor after the screen state is determined.

As shown in Figure 2, the device includes:

The first obtaining module 21 is used to obtain the potential value output by the Hall sensor;

The second acquisition module 22 is configured to acquire the output value of the proximity sensor when the potential value is less than the first threshold;

A state determination module 23, configured to determine the state of the protective cover worn by the smart terminal relative to the screen of the smart terminal according to the output value of the proximity sensor;

The third obtaining module 24 is used to obtain a plurality of output values of the acceleration sensor within a preset time range when the state of the protective cover relative to the screen is far away;

The setting module 25 is used to determine the change law of the multiple output values of the acceleration sensor, and set the screen status of the smart terminal according to the change law.

When the user puts the smart terminal in the pocket and walks around, the smart terminal will shake accordingly, which may easily cause the protective cover to move up, down, left, and right relative to the screen. The present invention uses the law that the absolute value of the Y-axis component of the acceleration of the smart terminal shakes slightly around the earth's gravitational acceleration value of 9.8kg/m ² when the smart terminal shakes, and sets a second preset range. The second preset range is a numerical range centered on the acceleration of gravity and satisfying the second discrete value, such as [8.8-10.8], and the unit is m/s ² . Whether the shaking of the smart terminal is caused by the user walking is determined by detecting whether the absolute value of the Y-axis component shakes within a second preset range. When the smart terminal is taken out of the pocket, the absolute value of the component of its acceleration on the Y axis will show a change process from the absolute value of the acceleration of gravity to 0 and then rise to the absolute value of the acceleration of gravity. Considering that there are deviations in the acceleration of gravity values in different regions, the present invention also sets a first preset range, which is a numerical range centered on the acceleration of gravity value and satisfying the first discrete value. A discrete value is smaller than the above-mentioned second discrete value. Exemplarily, the first preset range may be set to [9.7-9.9], and the unit is m/s ² . By detecting whether the absolute value of the Y-axis component drops from any value in the first preset range to 0 and rises from 0 to any value in the first preset range, it is determined whether the smart terminal is pulled out of the pocket come out. When it needs to be explained, the first discrete value represents the degree of dispersion of the data within the first preset range relative to the acceleration of gravity; the second discrete value represents the value of the data within the second preset range relative to the acceleration of gravity The degree of dispersion of values.

Therefore, the third acquisition module 24 also includes:

The acquiring unit 241 is configured to acquire the absolute value of the Y-axis component of each output value of the multiple output values of the acceleration sensor within a preset time range.

The setting module 25 includes:

Law determination unit 251, configured to determine the change law of the absolute value of the Y-axis component;

The bright screen unit 252 is used to change the absolute value of the Y-axis component from any value in the first preset range to 0, and to rise from 0 to any value in the first preset range , the screen of the smart terminal is set to a bright screen state.

as well as

The screen-off unit 253 is configured to set the screen of the smart terminal to a screen-off state when the change rule of the absolute value of the Y-axis component is within a second preset range.

In the embodiment of the present invention, when the absolute value of the Y-axis component drops from any value in the first preset range to 0 and rises from 0 to any value in the first preset range, it indicates that the smart terminal Take it out from your pocket, and if the screen of the smart terminal is off at this time, set it to the on state; otherwise, keep the screen on of the smart terminal unchanged. When the absolute value of the Y-axis component shakes within the second preset range, it indicates that the smart terminal is shaking up and down in the pocket or in the bag (usually caused by the user walking), and at this time, it is determined that the Hall sensor is False detection, setting or keeping the screen of the smart terminal in the off-screen state; thus making up for the error in the judgment of the Hall sensor caused by the slight displacement of the protective cover or a little distance away from the screen when the protective cover is on the screen, effectively It solves the problem of bright screen of the smart terminal in the trouser pocket and clothes pocket, and improves the accuracy of the screen control of the smart terminal.

It should be noted that the device in the embodiment of the present invention can be used to realize all the technical solutions in the above method embodiment, and the functions of each functional module can be realized according to the method in the above method embodiment, and the specific implementation process can refer to Relevant descriptions in the foregoing embodiments will not be repeated here.

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present invention.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.

If the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes. .

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (6)

1. A screen control method, characterized in that it is applied to an intelligent terminal comprising an acceleration sensor, the method comprising: Obtain the potential value output by the Hall sensor; acquiring an output value of the proximity sensor when the potential value is less than a first threshold; determining the state of the protective cover worn by the smart terminal relative to the screen of the smart terminal according to the output value of the proximity sensor; When the state of the protective cover relative to the screen is far away, acquiring a plurality of output values of the acceleration sensor within a preset time range; Determining the law of change of multiple output values of the acceleration sensor, and setting the screen state of the smart terminal according to the law of change; The multiple output values obtained by the acceleration sensor within the preset time range include: Obtain the absolute value of the Y-axis component of each output value of the acceleration sensor within a preset time range; The determining the change rule of multiple output values of the acceleration sensor, and setting the screen state of the smart terminal according to the change rule includes: determining the change law of the absolute value of the Y-axis component; When the change law of the absolute value of the Y-axis component falls from any value in the first preset range to 0, and rises from 0 to any value in the first preset range, the smart terminal The screen is set to the bright screen state. 2. The screen control method according to claim 1, wherein said determining the variation law of a plurality of output values of said acceleration sensor, and setting the screen state of said smart terminal according to said variation law comprises: If the change law of the absolute value of the Y-axis component is within the second preset range, the screen of the smart terminal is set to be in a screen-off state. 3. The screen control method according to claim 2, wherein the first preset range is a numerical range centered on the acceleration of gravity value and satisfying the first discrete value; The second preset range is a numerical range centered on the acceleration of gravity value and satisfying a second discrete value, and the first discrete value is smaller than the second discrete value. 4. A screen control device, characterized in that it is applied to an intelligent terminal comprising an acceleration sensor, the device comprising: The first obtaining module is used to obtain the potential value output by the Hall sensor; A second acquisition module, configured to acquire the output value of the proximity sensor when the potential value is less than the first threshold; A state determination module, configured to determine the state of the protective cover worn by the smart terminal relative to the screen of the smart terminal according to the output value of the proximity sensor; A third acquisition module, configured to acquire a plurality of output values of the acceleration sensor within a preset time range when the state of the protective cover relative to the screen is far away; A setting module, configured to determine a change law of a plurality of output values of the acceleration sensor, and set the screen state of the smart terminal according to the change law; The third acquisition module includes: An acquisition unit, configured to acquire the absolute value of the Y-axis component of each of the output values of the acceleration sensor within a preset time range; The setup module includes: a rule determination unit, configured to determine the change rule of the absolute value of the Y-axis component; Bright screen unit, used when the change rule of the absolute value of the Y-axis component is to drop from any value in the first preset range to 0, and rise from 0 to any value in the first preset range , setting the screen of the smart terminal to a bright screen state. 5. The screen control device according to claim 4, wherein the setting module further comprises: A screen-off unit, configured to set the screen of the smart terminal to a screen-off state when the change rule of the absolute value of the Y-axis component is within a second preset range. 6. The screen control device according to claim 5, wherein the first preset range is a numerical range centered on the acceleration of gravity value and satisfying the first discrete value; The second preset range is a numerical range centered on the acceleration of gravity value and satisfying a second discrete value, and the first discrete value is smaller than the second discrete value.