CN112879883A

CN112879883A - Control method of LED lamp

Info

Publication number: CN112879883A
Application number: CN202110115225.1A
Authority: CN
Inventors: 晏密英; 郭承; 谢雪梅
Original assignee: Central South University of Forestry and Technology
Current assignee: Central South University of Forestry and Technology
Priority date: 2021-01-28
Filing date: 2021-01-28
Publication date: 2021-06-01

Abstract

The invention discloses a control method of an LED lamp, wherein the LED lamp comprises a main body (1), a lamp ring (2) and a back plate (6); the main body and the back plate are both cylindrical, and the lamp ring is annular; the control method comprises the steps of controlling the color of the lamp ring, controlling the color of the lamp ring by the MCU through the dimming circuit based on an output signal of the sensor for detecting the rotation angle of the lamp ring, and controlling overcurrent protection. The control method also comprises lamp ring electric rotation control. The control method of the LED lamp is ingenious in conception and easy to implement.

Description

Control method of LED lamp

Technical Field

The invention relates to a control method of an LED lamp.

Background

The existing night lamp is simple in function, only has the function of the night lamp, does not have other functions, and cannot meet the requirements of people on intelligent products.

Therefore, it is necessary to design a portable LED lamp and a control method thereof.

Disclosure of Invention

The invention aims to solve the technical problem of providing the control method of the LED lamp, and the control method of the LED lamp is ingenious in conception and easy to implement.

The technical solution of the invention is as follows:

a control method of an LED lamp comprises a main body (1), a lamp ring (2) and a back plate (6); the main body and the back plate are both cylindrical, and the lamp ring is annular; the back plate is arranged on the back surface of the main body; the lamp ring is sleeved on the main body; a lamp panel (14) and lamp beads (15) arranged on the lamp panel are arranged in the lamp ring, and the lamp beads are LED lamp beads; the lamp beads are three-color lamps; the lamp ring can rotate relative to the main body; the lamp ring acquires a power supply and a control signal from the main body so as to supply power to the lamp beads and control the brightness and the color of the lamp beads; the main body is provided with a display screen; a sensor for detecting the rotation angle of the lamp ring is arranged on the lamp ring; a power supply is arranged in the back plate;

the control method includes color control of the lamp ring, and the MCU controls the color of the lamp ring through the dimming circuit based on an output signal of a sensor for detecting a rotation angle of the lamp ring.

The control method also comprises overcurrent protection control.

The control method also comprises lamp ring electric rotation control.

The power supply is a lithium battery or a plug for connecting with the mains supply. The sensor for detecting the rotation angle of the lamp ring is a Hall sensor or a coded disc or an angle sensor.

The main body, the lamp ring and the back plate are coaxial.

The plug for connecting the commercial power is a plug with a wire (4) arranged on the back plate or a hidden plug module. Hidden plug module: the back of backplate is equipped with depressed part 22, is equipped with hidden plug 5 that can rotate in the depressed part, when not being suitable for the plug, hidden plug can hide in the depressed part, when needs use the plug, turns up hidden plug is rotatory, can directly cartridge get some on the socket, is particularly suitable for inserting on wall socket panel, this kind of scheme of priority.

The panel is provided with a display screen (3).

The display screen is a push-pull type display screen; the display screen is connected with the panel through a guide rail mechanism; the guide rail mechanism comprises 2 parallel guide rails arranged on the panel. The display screen is provided with two guide grooves matched with the guide rails. The electricity getting of the display screen can be solved through wireless charging or through FPC. Data communication can be achieved wirelessly (such as Bluetooth) or through FPC. The FPC is a printed circuit board.

The display screen is provided with a camera which is used as a monitoring camera.

The main body is provided with a power socket and a USB socket. The power socket is two-hole socket 11 or three-hole socket 12, and power socket and USB socket are usually covered by the display screen, and when the display screen was pushed up, power socket and USB socket appeared.

A temperature and humidity sensor is arranged on the main body. The display screen can show the humiture like this.

The main body is provided with an MCU and a wireless communication module connected with the MCU, and the wireless communication module is a WiFi module or a 3G, 4G or 5G module.

The lamp plate is ring shape, is equipped with many rings of lamp pearls on the lamp plate. Specifically 2 turns, 12 per turn.

The side surface of the back plate is provided with a USB interface or a power interface.

Preferably, the communication is carried out through a power modem in a house. Realize this lamps and lanterns of cell-phone APP control.

Has the advantages that:

the LED lamp corresponding to the control method of the LED lamp has the following characteristics:

(1) the socket and the lamp ring are integrated;

the lamp ring can be used as illumination and night lamp, and the socket is used for pegging graft other consumer. The USB interface is also provided, and can be used for charging equipment such as a mobile phone.

(2) Lamp ring dimming

The luminous color of the lamp ring can be adjusted by rotating the lamp ring, and the design is ingenious. A light change scheme may be implemented, for example as a breathing light.

(3) The lamp ring has other functions

If have the camera, can be so that whole module has the function of surveillance camera head, have temperature and humidity sensor, can detect the humiture of current environment, can also have harmful gas or harmful substance monitoring sensor (like PM2.5 control, carbon monoxide control, formaldehyde control etc.), if be higher than the setting value, show and report to the police in the display screen.

(4) The structure is ingenious, and the socket port is arranged in a hidden way; the socket opening is hidden when the display screen is used and exposed when the display screen is pushed up.

(5) Using a unique power-taking module

Adopt hidden plug, can directly cartridge on the socket on the wall, or, through the flaky wire of modular, thereby get the electricity with the wire extension, it is very simple to lay wire like this. Any one of two surfaces of the sheet-shaped lead can be fixed on the wall surface through a double-sided adhesive tape, so that the wiring is smooth and attractive. Is one of the features of the present invention.

(6) The lamp ring can rotate

The motor drives the lamp ring to rotate, so that the effect of rotating the colored lamp is achieved.

(7) Overcurrent protection function

When the current is overlarge, the power supply is cut off through the relay, so that the electricity safety is guaranteed.

(8) Other functions are as follows:

the terminal is internally provided with a loudspeaker which can play music, and the terminal can be provided with an alarm clock. The lithium battery charging device is also provided with a constant current charging circuit, and the charging efficiency is high when the built-in lithium battery is charged. In addition, the lamp can be controlled through the mobile phone APP.

In conclusion, the LED lamp is ingenious in conception, rich in functions and particularly suitable for being applied to the family environment.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an LED lamp (socket);

FIG. 2 is a side view of an LED lamp;

fig. 3 is a schematic view of the front structure of the LED lamp (the display screen is in an initial state);

fig. 4 is a schematic structural diagram of the front side of the LED lamp (the display screen is in a push-up state); (ii) a

FIG. 5 is a schematic view of arrangement of lamp beads on the lamp panel;

FIG. 6 is a schematic diagram of a back structure of an LED lamp;

FIG. 7 is a partial schematic view of a lamp ring contact;

FIG. 8 is a schematic view of a modular wire;

FIG. 9 is a schematic view of a straight conductive line;

FIG. 10 is a schematic view of a segment of a bent wire;

FIG. 11 is a control system block diagram;

FIG. 12 is a schematic view of a lamp ring rotation driving mechanism;

FIG. 13 is a block diagram of a dimming control circuit;

fig. 14 is a schematic diagram of a constant current charging circuit;

FIG. 15 is a block diagram of an overcurrent protection circuit;

fig. 16 is a schematic diagram of an adjustable magnification amplification circuit.

Description of reference numerals: 1-main part, 2-lamp ring, 3-display screen, 4-wire, 5-hidden plug, 6-backboard, 7-USB interface, 8-power interface;

9-key, 10-socket panel, 11-two-hole jack, 12-three-hole jack, 13-guide rail, 14-lamp panel and 15-lamp bead;

16-light homogenizing body, 17-electric contact part, 18-conductive step, 19-elastic contact and 20-static contact ring; 21-closing plate; 22-a recess;

41-straight conductor segment, 42-conductor, 43-jack, 44-pin, 45-turning conductor segment.

46-motor, 47-internal gear, 48-driving gear, 49-motor shaft.

Detailed Description

The invention will be described in further detail below with reference to the following figures and specific examples:

example 1:

LED lamps and lanterns (socket)

Referring to fig. 1-12, an LED lamp comprises a main body 1, a lamp ring 2 and a back plate 6; the main body and the back plate are both cylindrical, and the lamp ring is annular; the back plate is arranged on the back surface of the main body; the lamp ring is sleeved on the main body; a lamp panel 14 and lamp beads 15 arranged on the lamp panel are arranged in the lamp ring, and the lamp beads are LED lamp beads; the lamp beads are three-color lamps;

the lamp ring can rotate relative to the main body; the lamp ring acquires a power supply and a control signal from the main body so as to supply power to the lamp beads and control the brightness and the color of the lamp beads;

the main body is provided with a display screen;

a sensor for detecting the rotation angle of the lamp ring is arranged on the lamp ring;

a power supply is arranged in the back plate.

The power supply is a lithium battery or a plug for connecting with the mains supply.

The sensor for detecting the rotation angle of the lamp ring is a Hall sensor or a coded disc or an angle sensor. The hall sensor principle is equipped with a plurality of hall sensor on the lamp ring, is equipped with the magnetic sheet in the main part, and when the lamp ring was rotatory, the signal sudden change that hall sensor produced can be triggered to the magnetic field of magnetic sheet, is prior art. The coded disc is an existing device, and when the lamp ring rotates, the number of coded disc output pulses corresponds to the rotating angle of the lamp ring; the angle sensor can adopt a three-axis acceleration sensor or other angle sensors, and when the lamp ring rotates, the angle changes, so that the sensor outputs signals.

The main body, the lamp ring and the back plate are coaxial.

The plug for connecting the mains supply is a plug with a wire 4 arranged on the back plate or a hidden plug module. Hidden plug module: the back of backplate is equipped with depressed part 22, is equipped with hidden plug 5 that can rotate in the depressed part, when not being suitable for the plug, hidden plug can hide in the depressed part, when needs use the plug, turns up hidden plug is rotatory, can directly cartridge get some on the socket, is particularly suitable for inserting on wall socket panel, this kind of scheme of priority.

The panel is provided with a display screen 3.

The wire for providing power for the LED lamp is a modular wire.

Control method of (II) LED lamp (socket)

The control method of the LED lamp comprises the step of controlling the color of the lamp ring, wherein the MCU controls the color of the lamp ring through the dimming circuit based on an output signal of the sensor for detecting the rotation angle of the lamp ring. The control method also comprises lamp ring electric rotation control.

(III) multifunctional socket (or socket) with LED lamp

The multifunctional socket with the LED lamp is also an LED lamp in nature;

the multifunctional socket comprises a main body 1, wherein a socket panel 10 is arranged on a front panel of the main body, and a two-hole socket or a three-hole socket is arranged on the socket panel;

the back of the main body is provided with a back plate; the back plate is provided with a power taking module;

for cylindrical main part in the main part, the cover is equipped with a lamp ring based on LED etc. in the main part, is equipped with in the main part to be used for the knob of adjusting luminance for lamp ring adjusts luminance.

The socket panel is also provided with a USB socket.

The lamp ring is integrated with a rotary dimming module, the lamp ring can rotate relative to the main body, and the rotary dimming module is a sensor used for detecting the rotation angle of the lamp ring.

The electricity taking module is a plug for connecting a mains supply, and the plug for connecting the mains supply is a plug with a wire 4 arranged on the back plate or a hidden plug module.

The main body is provided with an overcurrent protection module.

The overcurrent protection module comprises a current transformer which is used for detecting the size of the output circuit, the current transformer is rectified by a rectifying circuit to become a voltage signal and is amplified by an amplifying circuit to be transmitted to an ADC (analog to digital) end (namely an A/D (analog to digital) conversion end) of the MCU, solid relays are arranged in the power supply circuit, and if the current is larger than a preset value, the solid relays are controlled to be disconnected, and a power supply is cut off.

The wire is a modular wire. The front end of the main body is provided with a display screen. The display screen is a movable display screen based on the guide rail. The multifunctional socket can also be used as a temperature control panel of an air conditioner.

(IV) socket (lamp) control method:

a control method of a multifunctional socket comprises a main body 1, wherein a socket panel 10 is arranged on a front panel of the main body, and a two-hole socket or a three-hole socket is arranged on the socket panel; the back of the main body is provided with a back plate; the back plate is provided with a power taking module; the LED lamp is characterized in that the main body is a cylindrical main body, a lamp ring based on an LED and the like is sleeved on the main body, and a light adjusting knob for adjusting light of the lamp ring is arranged on the main body; the control method comprises the steps of overcurrent protection control; the control method further comprises color control of the lamp ring, wherein the MCU controls the color of the lamp ring through the dimming circuit based on an output signal of a sensor for detecting the rotation angle of the lamp ring; the control method also comprises lamp ring electric rotation control.

(V) Modular wire for light fitting or socket

The electric wire is a modular electric wire; the device is formed by assembling a plurality of strip-shaped straight conductor segments and at least one turning conductor segment; the straight wire section and the plurality of turning wire sections can be fixed on a wall body through double-sided adhesive tapes and the like due to the fact that two surfaces of the straight wire section and the turning wire sections are planes, and flexibility is good. One section of the modular wire is connected with a plug, and the other end of the modular wire is connected with a power interface 8 of the multifunctional socket. Has the advantages that: the wiring is more convenient, and is straight pleasing to the eye.

(VI) electric connection mechanism between main body and lamp ring

The main body is electrically connected with the lamp ring through a conductive mechanism;

the structure of the conductive mechanism is as follows: the outer ring of the cylindrical main body is provided with a conductive step (18), N static contact rings (20) are arranged in the conductive step, and N is more than or equal to 3; the inner ring of the lamp ring has an annular electrical contact (17); n elastic contacts (19) are arranged on the electric contact part; n elastic contact and N stationary contact ring correspond the contact respectively, and when the lamp ring was rotatory, elastic contact reliably contacted with stationary contact ring all the time. Wherein 2 quiet contact rings are power positive pole and ground, and other quiet contact rings are used for transmission control data, and in addition, during the assembly, earlier the lamp ring suit in the main part for elastic contact and quiet contact ring contact pin lamp ring axial at the assembly backplate, prevent that the axial from producing the displacement, seal the rear end of lamp ring through shrouding 21 when necessary.

(VII) amplifying circuit capable of adjusting amplification factor

As shown in fig. 16, the output terminal Vin of the temperature and humidity sensor (or the output terminal of the rectifier connected to the current transformer) is connected to the MCU through the amplifying circuit. The amplifying circuit structure is as follows:

the Vin signal end is connected with the inverting input end of the operational amplifier LM393 through a resistor R0, the homodromous input end of the operational amplifier LM393 is grounded through a resistor R0, the homodromous input end of the operational amplifier LM393 is also connected with 4 input channels of a 4-of-4 selector through 4 resistors R01-R04 respectively, the output channel of the 4-of-4 selector is connected with the output end Vout of the operational amplifier LM393, and the Vout is connected with the ADC end of the MCU;

in addition, 2 output ports of the MCU are respectively connected with a channel selection end A and a channel selection end B of a 4-selection selector;

calculation formula of Vout and Vin:

vout ═ Vin, (Rx + R0)/R0; wherein Rx ═ R01, R02, R03, or R04; determining which resistance to select based on the gate terminal AB; and R01, R02, R03 and R04 are each different; preferred R04-5-R03-25-R02-100-R01; r01-5 × R0. can conveniently achieve span and precision switching.

The temperature signal is amplified by the amplifying circuit with adjustable amplification factor, so that the flexibility is good, and the precision and the measuring range can be controlled.

(eight) control system of lamps and lanterns or socket

A control system of LED light-emitting equipment (socket) comprises an MCU, and a dimming signal input module, a dimming circuit, a display screen, a wireless communication module and a loudspeaker which are connected with the MCU;

the LED light-emitting device comprises a main body 1, a lamp ring 2 and a back plate 6; the main body and the back plate are both cylindrical, and the lamp ring is annular; the back plate is arranged on the back surface of the main body; the lamp ring is sleeved on the main body; a lamp panel 14 and lamp beads 15 arranged on the lamp panel are arranged in the lamp ring, and the lamp beads are LED lamp beads; the lamp beads are three-color lamps;

the dimming signal input module is used for inputting a dimming signal; the dimming signal input module is a sensor for detecting the rotation angle of the lamp ring; the MCU controls the color of the lamp ring through the dimming circuit based on an output signal of a sensor for detecting a rotation angle of the lamp ring.

The control system of the LED light-emitting equipment further comprises a plurality of control terminals;

the control terminal controls the plurality of LED light-emitting devices through the power modem communication mechanism.

The sensor for detecting the rotation angle of the lamp ring is a Hall sensor or a coded disc or an angle sensor. The LED light-emitting device also comprises a lamp ring rotation driving mechanism;

the lamp beads on the lamp panel are divided into a plurality of groups, and the plurality of groups of lamp beads display different colors or adopt a color change scheme. Thus, when the lamp ring rotates, the effect of rotating the colored lamp is achieved. The control of specific colored lights and the scheme of brightness change, such as the scheme of breathing lights, are the existing mature technologies.

Control terminal can pass through smart mobile phone APP visit, and control terminal passes through bluetooth communication connection with the smart mobile phone. Cell-phone APP can also each set of LED light emitting equipment of independent control, specifically through wifi or bluetooth control.

(nine) lamp ring rotary driving mechanism

The LED light-emitting device (multifunctional socket) also comprises a lamp ring rotation driving mechanism;

as shown in fig. 12, the lamp ring rotation driving mechanism includes a motor 46 having a driving gear 48 on a rotation shaft thereof, and a circular ring-shaped recess having internal teeth 47 at a rear end thereof, so that the lamp ring is integrally formed as an internal gear; the internal teeth are meshed with the driving gear, and the lamp ring can be driven to rotate when the motor rotates.

(ten) overcurrent protection circuit

An overcurrent protection circuit is arranged on the LED lamp (socket); as shown in fig. 15, an ac wire (an ac wire of a charging coil) is inserted into a current transformer (or a coil) to enable the current transformer to generate a mutual induction current, the larger the field power consumption is, the larger the mutual induction current is, the smaller the field power consumption is, and the smaller the mutual induction current is, so that a voltage comparator is utilized to output a signal waveform, and a Main Controller (MCU) can obtain field current information through self-contained AD acquisition, thereby achieving a detection effect. In the circuit design, alternating current mutual inductance current is converted into direct current through four rectifier diodes, two output signals are provided, one is analog quantity, and the output signals are output by VOUT and output to an MCU; and the direct control relay is used for switching off and switching on the power supply of the motor at the high and low levels of TTL.

Description of the circuit:

vin is obtained from an output signal of the current transformer through a bridge rectifier; the comparator compares Vin with reference voltage Vref, if Vin is more than Vref, the comparator outputs low level to control the relay to cut off the output power supply.

(eleven) dimming circuit

As shown in fig. 13, a dimming circuit is arranged on the lamp ring, and a Microprocessor (MCU) realizes dimming of the multiple LED modules through a PWM dimming driving circuit; the MCU controls six LED branches (the LED lamp beads are divided into 6 groups) through the switches K1-K6;

a dimming knob (potentiometer, or lamp ring) is used for inputting brightness parameters; the button is used for controlling the switching of which one way or multichannel lamp, and communication module is used for receiving remote control, and light intensity sensor is illumination sensor promptly and is used for detecting on-the-spot environment light intensity to provide the reference for automatic light modulation.

The LED module is powered by a lithium battery, and a circuit for charging the lithium battery is a constant-current charging circuit and is used for efficiently charging the lithium battery.

As shown in fig. 14, the constant current charging circuit includes a constant voltage driving chip and a current feedback circuit; (1) the voltage output end of the constant voltage driving chip is a positive output end VOUT + of the constant current charging circuit; the negative output end of the constant voltage driving chip is grounded; the constant voltage driving chip is powered by a direct current voltage power supply end VIN + and VIN-; (2) the current feedback circuit comprises resistors R1, R2 and R5 and a reference voltage end VREF +; the reference voltage end VREF + is grounded through resistors R1, R2 and R5 which are sequentially connected in series; the connecting point of the resistor R5 and the resistor R2 is a negative output end VOUT < - >; the connection point of the resistors R1 and R2 is connected with the feedback terminal FB of the constant voltage driving chip. The constant current charging circuit also comprises a voltage feedback circuit; the voltage feedback circuit comprises resistors R3 and R4 and a diode D1; the resistors R3 and R4 are connected in series and then connected between the positive output end VOUT + of the constant current charging circuit and the ground; the connection point of the resistors R3 and R4 is connected with the anode of the diode D1; the cathode of the diode D1 is connected to the feedback terminal FB of the constant voltage driving chip.

It should be noted that the lamp and the socket mentioned above are the same object, because the device of the present invention has both the lighting function and the socket function, and is both the lamp and the socket.

Claims

1. The control method of the LED lamp is characterized in that the LED lamp comprises a main body (1), a lamp ring (2) and a back plate (6); the main body and the back plate are both cylindrical, and the lamp ring is annular; the back plate is arranged on the back surface of the main body; the lamp ring is sleeved on the main body; a lamp panel (14) and lamp beads (15) arranged on the lamp panel are arranged in the lamp ring, and the lamp beads are LED lamp beads; the lamp beads are three-color lamps; the lamp ring can rotate relative to the main body; the lamp ring acquires a power supply and a control signal from the main body so as to supply power to the lamp beads and control the brightness and the color of the lamp beads; the main body is provided with a display screen; a sensor for detecting the rotation angle of the lamp ring is arranged on the lamp ring; a power supply is arranged in the back plate;

2. The method of claim 1, further comprising an over-current protection control.

3. The method of claim 1, further comprising a lamp ring electrical rotation control.

4. The method of claim 1, wherein the main body, the lamp ring and the back plate are coaxial.

5. The method for controlling the LED lamp according to claim 1, wherein the plug for connecting the commercial power is a plug with a wire (4) arranged on the back plate or a concealed plug module.

6. The method for controlling the LED lamp according to claim 1, wherein a display screen (3) is provided on the panel.

7. The method for controlling the LED lamp according to claim 6, wherein the display screen is a push-pull display screen; the display screen is connected with the panel through a guide rail mechanism.

8. The method for controlling the LED lamp according to claim 6, wherein a camera is arranged on the display screen and used as a monitoring camera.

9. The method for controlling the LED lamp according to claim 7, wherein the main body is provided with a power socket and a USB socket.

10. The method for controlling the LED lamp according to claim 1, wherein a temperature and humidity sensor is provided on the main body.