CN113194570A

CN113194570A - Light emitting circuit, mobile terminal, LED strong light and jet liquid control method

Info

Publication number: CN113194570A
Application number: CN202110458514.1A
Authority: CN
Inventors: 雷春林
Original assignee: TCL Communication Ningbo Ltd
Current assignee: TCL Communication Ningbo Ltd
Priority date: 2021-04-27
Filing date: 2021-04-27
Publication date: 2021-07-30

Abstract

The embodiment of the application provides a light-emitting circuit, which comprises a power module, a first switch, a step-up transformer, a second switch, a central processing unit, a light-emitting module and a first resistor; the first switch is arranged between the power supply module and the boosting transformer, and the output end of the boosting transformer is electrically connected with one end of the first resistor; the second switch comprises a control end, a first connecting end and a second connecting end, and the other end of the first resistor is electrically connected with the first connecting end of the second switch; the analog-to-digital conversion port of the central processing unit is electrically connected with the input end of the step-up transformer, and the level output port of the central processing unit is electrically connected with the control end of the second switch; one end of the light-emitting module is electrically connected with the second connecting end of the second switch and the input end of the step-up transformer, and the other end of the light-emitting module is electrically connected with the negative end of the power module. The light-emitting circuit of the embodiment of the application can enable the light-emitting module to emit strong light under the condition that the voltage of the power supply module is very low.

Description

Light emitting circuit, mobile terminal, LED strong light and jet liquid control method

Technical Field

The application relates to the technical field of LED lamp circuits, in particular to a light-emitting circuit, a mobile terminal, an LED strong light control method and a liquid injection control method.

Background

The mobile terminal is taken with a lot of people as a popular terminal device at present, the mobile terminal device generally has modules of a camera \ an LED flash lamp, and if the functional modules can be used for self-defense in emergency, the mobile terminal device can be used as a self-defense tool.

The existing self-defense equipment generally irradiates eyes of an attacker by emitting strong light, and a LED lamp of mobile terminal equipment can be used as a luminous tool, but the emitted brightness of the LED lamp is not strong enough, or the LED lamp cannot be lightened under the condition that the mobile terminal is low in electric quantity (the battery voltage fluctuates along with the use of the electric quantity of the battery, and when the electric quantity of the battery is lower than 15%, the battery voltage is lower than 3.5V, so that an LED (light emitting diode) cannot be lightened possibly).

Therefore, the existing method has defects and needs to be improved and developed.

Disclosure of Invention

The embodiment of the application provides a light-emitting circuit, a mobile terminal, an LED strong light control method and a liquid injection control method, which can light an LED lamp under the condition that the voltage of a battery is very low and enable the LED lamp to emit strong light.

The embodiment of the application provides a light-emitting circuit, which comprises a power supply module, a first switch, a step-up transformer, a second switch, a central processing unit, a light-emitting module and a first resistor;

one end of the first switch is electrically connected with the positive terminal of the power module, the other end of the first switch is electrically connected with the input end of the step-up transformer, and the output end of the step-up transformer is electrically connected with one end of the first resistor;

the second switch comprises a control end, a first connecting end and a second connecting end, the control end is used for controlling the connection and disconnection between the first connecting end and the second connecting end, and the other end of the first resistor is electrically connected with the first connecting end of the second switch;

the analog-to-digital conversion port of the central processing unit is electrically connected with the input end of the boosting transformer, and the level output port of the central processing unit is electrically connected with the control end of the second switch;

one end of the light-emitting module is electrically connected with the second connecting end of the second switch and the input end of the step-up transformer, and the other end of the light-emitting module is electrically connected with the negative end of the power module.

In the light emitting circuit according to the embodiment of the present application, the light emitting module includes a positive terminal and a negative terminal, and the positive terminal is electrically connected to the second connection terminal of the second switch and the input terminal of the step-up transformer;

the light-emitting circuit further comprises a capacitor and a diode, one electrode plate of the capacitor is electrically connected with the second connecting end of the second switch, the other electrode plate of the capacitor is electrically connected with the negative end of the power module, the anode of the diode is electrically connected with the second connecting end of the second switch, and the cathode of the diode is electrically connected with the anode of the light-emitting module.

In the light emitting circuit according to the embodiment of the present application, the light emitting circuit further includes a second resistor, one end of the second resistor is electrically connected to the level output port of the central processing unit, and the other end of the second resistor is electrically connected to the control terminal of the second switch.

In the light emitting circuit according to the embodiment of the present application, the light emitting circuit further includes a third resistor, one end of the third resistor is electrically connected to the input terminal of the step-up transformer, and the other end of the third resistor is electrically connected to the second connection terminal of the second switch.

In the lighting circuit according to the embodiment of the present application, the lighting module includes a plurality of LED lamps connected in parallel.

The embodiment of the application also provides a mobile terminal, which comprises an emergency button and the light-emitting circuit of the embodiment;

the emergency button is arranged outside the mobile terminal and electrically connected with the central processing unit, and the emergency button is used for controlling a level output port of the central processing unit to send a level signal to the second switch and controlling the connection and disconnection between the first connecting end and the second connecting end.

In the mobile terminal according to the embodiment of the application, the mobile terminal further comprises a self-defense function module;

the body-defending function module is arranged inside the mobile terminal and electrically connected with the central processing unit, the body-defending function module is used for controlling the opening and closing of the highlight function, and the emergency button is used for triggering the level output port of the central processing unit to send a first level signal to the second switch when detecting a first triggering operation aiming at the emergency button if the highlight function is opened so as to conduct a first connecting end and a second connecting end.

In the mobile terminal according to the embodiment of the application, the self-defense function module is further configured to control the on and off of the injection function, the mobile terminal further includes a motor and an injection container, the motor is disposed inside the mobile terminal, and the injection container is disposed outside the mobile terminal;

the spraying container is connected with the motor and is used for storing stimulating liquid and spraying the stimulating liquid;

the motor is electrically connected with a main board of the mobile terminal, if the spraying function is started, the emergency button is used for triggering the central processing unit to control the main board to drive the motor to work when a second triggering operation aiming at the emergency button is detected if the spraying function is started, so as to control the spraying container to spray the irritant liquid.

The embodiment of the application further provides an LED highlight control method, which is applied to the mobile terminal in the embodiment, and the method includes:

if the strong light function is in an on state, when the central processing unit detects that the duration of the continuous pressing of the emergency button is a first preset duration, determining to trigger the first trigger operation;

and outputting a first level signal to the control end of the second switch through the level output port of the central processing unit so as to control the conduction of the first connecting end and the second connecting end of the second switch, so that the light-emitting module emits light.

An embodiment of the present application further provides a method for controlling liquid ejection, where the method is applied to the mobile terminal in the above embodiment, and the method includes:

if the spraying function is in an on state, when the central processing unit detects that the duration of the continuous pressing of the emergency button is a second preset duration, determining to trigger the second trigger operation;

and outputting a first level signal to the control end of the second switch through the level output port of the central processing unit so as to control the conduction of the first connecting end and the second connecting end of the second switch, so that the spraying container sprays the irritant liquid.

The light-emitting circuit provided by the embodiment of the application comprises a power supply module, a first switch, a step-up transformer, a second switch, a central processing unit, a light-emitting module and a first resistor; one end of the first switch is electrically connected with the positive terminal of the power module, the other end of the first switch is electrically connected with the input end of the step-up transformer, and the output end of the step-up transformer is electrically connected with one end of the first resistor; the second switch comprises a control end, a first connecting end and a second connecting end, the control end is used for controlling the connection and disconnection between the first connecting end and the second connecting end, and the other end of the first resistor is electrically connected with the first connecting end of the second switch; the analog-to-digital conversion port of the central processing unit is electrically connected with the input end of the boosting transformer, and the level output port of the central processing unit is electrically connected with the control end of the second switch; one end of the light-emitting module is electrically connected with the second connecting end of the second switch and the input end of the step-up transformer, and the other end of the light-emitting module is electrically connected with the negative end of the power module. The embodiment of the application designs a circuit comprising the step-up transformer and the second switch, so that the light-emitting module can emit strong light under the condition that the voltage of the power module of the mobile terminal is normal, the light-emitting module can emit strong light under the condition that the voltage of the power module of the mobile terminal is very low, the mobile terminal can be sprayed with irritant liquid, and the mobile terminal can be used as a self-defense tool.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

Fig. 1 is a circuit diagram of a light emitting circuit according to an embodiment of the invention.

Fig. 2 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention.

Fig. 3 is a schematic flow chart of an LED glare control method according to an embodiment of the present invention.

Fig. 4 is a flowchart illustrating a method for controlling the ejection of liquid according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without inventive step, are within the scope of the present application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

The embodiment of the present application provides a light emitting circuit 1000, and referring to fig. 1, the light emitting circuit 1000 includes a power module 10, a first switch 20, a step-up transformer 30, a second switch 40, a central processing unit 50, a light emitting module 60, and a first resistor 70.

One end of the first switch 20 is electrically connected to the positive terminal of the power module 10, the other end of the first switch 20 is electrically connected to the input terminal 301 of the step-up transformer 30, and the output terminal 302 of the step-up transformer 30 is electrically connected to one end of the first resistor 70.

The second switch 40 includes a first connection end 401, a control end 402 and a second connection end 403, the control end 402 is used for controlling the connection and disconnection between the first connection end 401 and the second connection end 402, and the other end of the first resistor 70 is electrically connected to the first connection end 401 of the second switch 40.

The second switch can be a triode or a mos tube. If the second switch 40 is a triode, the first connection terminal 401 is a collector, the control terminal 402 is a base, and the second connection terminal 403 is an emitter. If the second switch 40 is a mos transistor, the first connection end 401 is a drain, the control end 402 is a gate, and the second connection end 403 is a source.

The step-up transformer 30 is used to step up the voltage of the power module 10, so that the light emitting module 60 can emit strong light when the voltage of the power module 10 of the mobile terminal is low, so that the mobile terminal can be used as a self-defense tool. The step-up transformer 30 may be selected according to the brightness required by the light emitting module 60, and the more the number of turns of the winding of the step-up transformer 30 is, the higher the voltage can be raised.

An analog-to-digital conversion (ADC) port 501 of the cpu 50 is electrically connected to the input terminal 301 of the step-up transformer 30, and a level output (GPIO) port 502 of the cpu 50 is electrically connected to the control terminal 402 of the second switch 40.

One end 601 of the light emitting module 60 is electrically connected to the second connection terminal 403 of the second switch 40 and the input terminal 301 of the step-up transformer 30, and the other end 602 of the light emitting module 60 is electrically connected to the negative terminal of the power module 10.

Due to the boosting of the step-up transformer 30, the first resistor 70 can be adjusted to be smaller, that is, compared with a circuit without the step-up transformer 30, the first resistor 70 of the present disclosure can select a resistor with a smaller resistance value, so as to increase the current passing through the light emitting module 60. As the voltage and current across the light emitting module 60 increase, the power of the light emitting module 60 increases, and thus the luminance of the light emitting module 60 increases, that is, the light emitting module 60 emits strong light. In addition, by the light emitting circuit 1000 including the step-up transformer 30 and the second switch 40, it is possible to allow the light emitting module 60 to emit strong light in a case where the voltage of the power module 10 of the mobile terminal is low.

In some embodiments, the light emitting module 60 comprises a positive terminal 601 and a negative terminal 602, the positive terminal 601 is electrically connected to the second connection terminal 403 of the second switch 40 and the input terminal 301 of the step-up transformer; the light emitting circuit 1000 further includes a capacitor 80 and a diode 90, wherein one electrode plate of the capacitor 80 is electrically connected to the second connection terminal 403 of the second switch 40, another electrode plate of the capacitor 80 is electrically connected to the negative terminal of the power module 10, the positive electrode of the diode 90 is electrically connected to the second connection terminal 403 of the second switch, and the negative electrode of the diode 90 is electrically connected to the positive terminal 601 of the light emitting module 60.

The capacitor 80 and the diode 90 form a free-wheeling protection circuit, and the voltage applied to the light emitting module 60 is not a sudden change process due to the characteristic of the capacitor 80 storing charges when the second switch 40 is suddenly turned on, so that the light emitting module 60 is not damaged due to sudden impact of a large current. In addition, in the case that the second switch 40 is suddenly turned off, the light emitting module 60 is not suddenly turned off due to the stored energy of the capacitor 80, so that the light emitting module 60 can be protected, and the service life of the LED lamp can be prolonged.

In some embodiments, the light emitting circuit 1000 further includes a second resistor 100, one end of the second resistor 100 is electrically connected to the level output port 502 of the cpu 50, and the other end of the second resistor 100 is electrically connected to the control terminal 402 of the second switch 40.

The second resistor 100 mainly plays a role of current limiting, and prevents hardware on the line from being damaged due to excessive current.

In some embodiments, the light emitting circuit 1000 further includes a third resistor 110, one end of the third resistor 110 is electrically connected to the input terminal 301 of the step-up transformer 30, and the other end of the third resistor 110 is electrically connected to the second connection terminal 403 of the second switch 40.

The third resistor 110 mainly plays a role of current limiting, and prevents hardware on the line from being damaged due to excessive current.

In some embodiments, the light module 60 includes a plurality of LED lights connected in parallel.

It should be noted that the number of the LED lamps may be n, where n is greater than 1, and a person skilled in the art may select the number of the LED lamps according to practical situations, and is not limited specifically herein. The LED lamps can be connected in parallel to achieve a brighter effect.

In summary, the light emitting circuit 1000 provided in the embodiment of the present application includes a power module 10, a first switch 20, a step-up transformer 30, a second switch 40, a central processing unit 50, a light emitting module 60, and a first resistor 70; one end of the first switch 20 is electrically connected to the positive terminal of the power module 10, the other end of the first switch 20 is electrically connected to the input terminal 301 of the step-up transformer 30, the output terminal 302 of the step-up transformer 30 is electrically connected to one end of the first resistor 70, the second switch 40 includes a first connection terminal 401, a control terminal 402 and a second connection terminal 403, the control terminal 402 is used for controlling the connection and disconnection between the first connection terminal 401 and the second connection terminal 402, and the other end of the first resistor 70 is electrically connected to the first connection terminal 401 of the second switch 40. The analog-to-digital conversion port 501 of the cpu 50 is electrically connected to the input terminal 301 of the step-up transformer 30, and the level output port 502 of the cpu 50 is electrically connected to the control terminal 402 of the second switch 40; one end 601 of the light emitting module 60 is electrically connected to the second connection terminal 403 of the second switch 40 and the input terminal 301 of the step-up transformer 30, and the other end 602 of the light emitting module 60 is electrically connected to the negative terminal of the power module 10. By designing a circuit including the step-up transformer 30 and the second switch 40, the embodiment of the application can not only enable the light-emitting module 60 to emit strong light under the condition that the voltage of the power module 10 of the mobile terminal is normal, but also enable the light-emitting module 60 to emit strong light under the condition that the voltage of the power module 10 of the mobile terminal is very low, so that the mobile terminal can be used as a self-defense tool.

The embodiment of the present application further provides a mobile terminal 1200, as shown in fig. 2, the mobile terminal 1200 includes the emergency button 130 and the light emitting circuit 1000 in the above embodiments;

the emergency button 130 is disposed outside the mobile terminal 1200, the emergency button 130 is electrically connected to the central processing unit 50, and the emergency button 130 is used for controlling the level output port 502 of the central processing unit 50 to send a level signal to the second switch 40, so as to control the connection and disconnection between the first connection terminal 401 and the second connection terminal 403.

For example, when the central processing unit 50 detects that the pressing duration of the emergency button 130 is a first preset duration, the level output port 502 of the central processing unit 50 sends a first level signal to the second switch 40 to control the conduction between the first connection terminal 401 and the second connection terminal 403. The first level signal is a high level signal.

The first preset time period may be set by a person skilled in the art according to an actual situation, and is not specifically limited herein. For example, the first preset time period may be three seconds, and when the user needs to transmit a strong light from the mobile terminal 1200 in an emergency, the level output port 502 of the central processing unit 50 sends a first level signal to the second switch 40 by pressing the emergency button 130 for three seconds, so as to control conduction between the first connection terminal 401 and the second connection terminal 403.

When the connection between the first connection end 401 and the second connection end 403 of the second switch 40 is not required, that is, the connection between the first connection end 401 and the second connection end 403 is to be disconnected, the level output port 502 of the central processing unit 50 sends a low level signal to the second switch 40.

In some embodiments, the mobile terminal 1200 further includes a self-defense function module 120, the self-defense function module 120 is disposed inside the mobile terminal 1200, the self-defense function module 120 is electrically connected to the central processing unit 50, the self-defense function module 120 is configured to control turning on and off of a highlight function, and the emergency button 130 is configured to trigger the level output port 502 of the central processing unit 50 to send a first level signal to the second switch 40 to connect the first connection terminal 401 and the second connection terminal 403 when a first trigger operation for the emergency button 130 is detected if the highlight function is turned on.

For example, when the central processing unit 50 detects that the strong light function is turned on and detects a first triggering operation for the emergency button 130, the level output port 502 of the central processing unit 50 is triggered to send a first level signal to the second switch 40 to turn on the first connection terminal 401 and the second connection terminal 403.

When the cpu 50 detects that the strong light function is turned off, the level output port 502 of the cpu 50 sends a low level signal to the second switch 40 to disconnect the first connection terminal 401 and the second connection terminal 403.

For example, the first preset time period may be three seconds, when the user needs to emit strong light from the mobile terminal 1200 in an emergency, the user turns on the strong light function and presses the emergency button 130 for three seconds, and the level output port 502 of the central processing unit 50 sends a first level signal to the second switch 40 to turn on the first connection terminal 401 and the second connection terminal 403 to control the light emitting module 60 to emit the strong light. If the strong light function is turned off, the first connection terminal 401 and the second connection terminal 403 of the second switch 40 are disconnected even if the emergency button 130 is pressed for three seconds, and strong light cannot be emitted. Under normal conditions, if only the normal indicator light is activated, when the emergency button 130 is pressed for a short time, the first connection terminal 401 and the second connection terminal 403 of the second switch 40 are in the off state, the power module 10 supplies power to the light emitting module 60 through the third resistor 110, the voltage across the light emitting module 60 is low voltage, and the current passing through the light emitting module 60 is low current, so that the light emitting module 60 emits brightness normally.

In some embodiments, the self-defense function module is further configured to control the on and off of the spraying function, the mobile terminal 1200 further includes a motor 140 and a spraying container 150, the motor 140 is disposed inside the mobile terminal 1200, and the spraying container 150 is disposed outside the mobile terminal 1200; the spraying container 150 is connected to the motor 140, the spraying container 150 is used for storing an irritant liquid and spraying the irritant liquid, the motor 140 is electrically connected to a main board of the mobile terminal, if the spraying function is turned on, the emergency button 130 is used for triggering the central processing unit 50 to control the main board to drive the motor 140 to work when a second triggering operation for the emergency button 130 is detected if the spraying function is turned on, so as to control the spraying container 150 to spray the irritant liquid.

Wherein, a position corresponding to the spraying container 150 on the mobile terminal is provided with a notch, so that the spraying container 150 can spray the irritant liquid out of the mobile terminal.

For example, if the spraying function is turned on and the pressing duration of the emergency button 130 is a second preset duration, the central processing unit 50 is triggered to control the main board to drive the motor 140 to operate, so as to control the spraying container 150 to spray the irritant liquid.

The second preset time period may be set by a person skilled in the art according to an actual situation, and is not specifically limited herein. For example, the second preset time period may be four seconds, when the user needs to send a strong light from the mobile terminal 1200 in an emergency, the central processing unit 50 controls the main board to drive the motor 140 to operate by turning on the spraying function and pressing the emergency button 130 for four seconds, so as to control the spraying container 150 to spray the irritant liquid. If the spray function is off, the second switch 40 is turned off even if the emergency button 130 is pressed for four seconds, and the spray container 150 cannot be allowed to spray the stimulation liquid.

To sum up, the mobile terminal 1200 provided by the embodiment of the present application not only can let the light emitting module 60 emit the strong light under the normal condition of the voltage of the power module 10 of the mobile terminal 1200, but also can let the light emitting module 60 emit the strong light under the very low condition of the voltage of the power module 10 of the mobile terminal 1200, and can let the mobile terminal 1200 spray the irritant liquid, thereby can let the mobile terminal use as a self-defense tool.

An embodiment of the present application further provides an LED glare control method, please refer to fig. 3, and fig. 3 is a schematic flowchart of the LED glare control method provided in the embodiment of the present application. The method is applied to the mobile terminal in the above embodiment, and the method may include the following steps:

step 101, if the strong light function is in an on state, when the central processing unit detects that the duration of the continuous pressing of the emergency button is a first preset duration, determining to trigger the first trigger operation.

The first preset time period may be set by a person skilled in the art according to an actual situation, and is not specifically limited herein.

And 102, outputting a first level signal to a control end of a second switch through a level output port of the central processing unit to control the conduction of a first connecting end and a second connecting end of the second switch, so that the light-emitting module emits light.

For example, the first preset duration may be three seconds, when a user needs to transmit strong light from the mobile terminal in an emergency, the strong light function is turned on, and when the user presses the emergency button for three seconds, the level output port of the central processing unit outputs a first level signal to the control terminal of the second switch to control the first connection terminal and the second connection terminal of the second switch to be connected, so that the light emitting module transmits the strong light. Wherein the first level is a high level.

As can be seen from the above, in the LED strong light control method provided in the embodiment of the present application, if the strong light function is in the on state, when the central processing unit detects that the duration that the emergency button is continuously pressed is a first preset duration, it is determined to trigger the first trigger operation; and outputting a first level signal to the control end of the second switch through the level output port of the central processing unit so as to control the conduction of the first connecting end and the second connecting end of the second switch, so that the light-emitting module emits light. Can make light emitting module transmission highlight to can let mobile terminal regard as the instrument of defending oneself and use.

Referring to fig. 4, fig. 4 is a schematic flow chart of a control method for controlling the liquid ejection according to an embodiment of the present application. The method is applied to the mobile terminal in the above embodiment, and the method may include the following steps:

step 201, if the spraying function is in an on state, when the central processing unit detects that the duration of the continuous pressing of the emergency button is a second preset duration, determining to trigger the second trigger operation.

The second preset time period may be set by a person skilled in the art according to an actual situation, and is not specifically limited herein.

Step 202, outputting a first level signal to a control end of a second switch through a level output port of the central processing unit to control a first connection end and a second connection end of the second switch to be connected, so that the spray container sprays the irritant liquid.

For example, the second preset time period may be four seconds, when the user needs the mobile terminal to emit strong light in an emergency, the level output port of the central processing unit outputs a first level signal to the control terminal of the second switch by turning on the spraying function and pressing the emergency button for four seconds, so as to control the first connection terminal and the second connection terminal of the second switch to be connected, so that the spraying container sprays the irritant liquid. Wherein the first level is a high level.

As can be seen from the above, in the control method for spraying liquid provided in the embodiment of the present application, if the spraying function is in the on state, when the central processing unit detects that the duration of the continuous pressing of the emergency button is the second preset duration, it is determined to trigger the second trigger operation; and outputting a first level signal to the control end of the second switch through the level output port of the central processing unit so as to control the conduction of the first connecting end and the second connecting end of the second switch, so that the spraying container sprays the irritant liquid. The mobile terminal can be enabled to spray the irritant liquid, and therefore the mobile terminal can be used as a self-defense tool.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The light emitting circuit, the mobile terminal, the LED highlight control method and the liquid ejection control method provided in the embodiments of the present application are described in detail above, and specific examples are applied in the description to explain the principle and the implementation of the present application, and the description of the above embodiments is only used to help understanding the technical scheme and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.

Claims

1. A light-emitting circuit is characterized by comprising a power supply module, a first switch, a step-up transformer, a second switch, a central processing unit, a light-emitting module and a first resistor;

2. The lighting circuit of claim 1, wherein the lighting module comprises a positive terminal and a negative terminal, the positive terminal being electrically connected to the second connection terminal of the second switch and the input terminal of the step-up transformer;

3. The light emitting circuit of claim 1, further comprising a second resistor, one end of the second resistor being electrically connected to the level output port of the cpu, and the other end of the second resistor being electrically connected to the control terminal of the second switch.

4. The light-emitting circuit according to claim 1, further comprising a third resistor, wherein one end of the third resistor is electrically connected to the input terminal of the step-up transformer, and the other end of the third resistor is electrically connected to the second connection terminal of the second switch.

5. The lighting circuit of claim 1, wherein the lighting module comprises a plurality of LED lights connected in parallel.

6. A mobile terminal, characterized in that it comprises a self-defense function module emergency button and a lighting circuit according to claims 1 to 5;

the emergency button is arranged outside the mobile terminal and electrically connected with the central processing unit, and the emergency button is used for controlling a level output port of the central processing unit to send a first level signal to the second switch and controlling the connection and disconnection between the first connecting end and the second connecting end.

7. The mobile terminal of claim 6, wherein the mobile terminal further comprises a self-defense function module;

8. The mobile terminal of claim 6, wherein the self-defense function module is further configured to control on and off of a spray function, the mobile terminal further comprises a motor and a spray container, the motor is disposed inside the mobile terminal, and the spray container is disposed outside the mobile terminal;

9. An LED strong light control method, applied to the mobile terminal of any one of claims 6 to 8, the method comprising:

10. A method for controlling an ejection liquid, the method being applied to the mobile terminal according to claim 8, the method comprising: