CN109812730B - Single-point continuous scanning low-power-consumption wide-spectrum LED light source and light emitting method - Google Patents

Abstract

The invention discloses a single-point continuous scanning low-power-consumption wide-spectrum LED light source and a light emitting method, wherein the light source comprises a shell, an LED driving and controlling circuit board is arranged in the shell, the LED driving and controlling circuit board is connected with an LED lamp panel through an electric brush, a plurality of LED lamps with different wavelength ranges are distributed on the LED lamp panel along the circumferential direction, the LED driving and controlling circuit board is connected with a motor through a motor driving board, the motor is connected with a driving wheel I through a Malta cross movement, the driving wheel I is meshed with a driven wheel I through a gear, and the LED lamp panel is fixed on the driven wheel I; the LED light source disclosed by the invention has low power consumption, wide spectrum and high power per wavelength, improves the performance of a seawater absorbance sensor, and has huge application potential on ocean monitoring platforms with limited energy supply such as buoys.

Description

A single-point continuous scanning low-power wide-spectrum LED light source and light-emitting method

Technical Field

The invention relates to an LED light source, and in particular to a single-point continuous scanning low-power consumption wide-spectrum LED light source and a light-emitting method.

Background technique

Seawater absorbance is an important parameter that can reflect the composition of seawater. The absorption of seawater at different wavelengths can reflect the concentration and type of phytoplankton, suspended solids, dissolved substances, etc. This information is of great significance to ocean monitoring, marine ranch construction, marine satellite remote sensing, marine navigation and national defense security.

Seawater absorbance sensor is a commonly used device for seawater absorbance detection. The compact small light source is one of the key components of the seawater absorbance sensor. Its power consumption, spectral width and power per unit wavelength directly determine the performance and detection efficiency of the seawater absorbance sensor.

The existing small light sources are mainly divided into three categories. The first type of light source has low power consumption and high power per unit wavelength, but a narrow output spectrum. The half-maximum width of the output spectrum of this type of light source can be 2nm or even lower, and the power per unit wavelength is on the order of 0.1mW/nm, but the maximum spectral width does not exceed 50nm. The too narrow spectral width makes it impossible to use it as a wide-spectrum light source. This type of light source is represented by the single-wavelength LED light source in the LSM series of light sources from Ocean Optics. The second type is a light source with low power consumption, a wide spectral range, but low power per unit wavelength. The total spectral output power of this type of light source is at the same level as other types of light sources, but the wider spectrum reduces the power divided at each wavelength. This type of light source is represented by the HL-2000 series of wide-spectrum halogen light sources from Ocean Optics. The spectral width of this series of light sources is 2040nm, the maximum spectral output total power is 8.8mW, the average power per unit wavelength is 0.0043mW/nm, and its power supply requirement is 15W. The third type is a light source with a wide output spectrum range, high power per unit wavelength, but high power consumption. This type of light source is represented by the EQ series wide spectrum light source of Beijing Dingxin Youwei Photonic Technology Co., Ltd. The spectrum width of this series of light sources is 1930nm, and the power per unit wavelength is as high as 0.060mW/nm, but its 140W power consumption has high requirements for energy supply. In summary, existing small light sources generally have the disadvantages of high power consumption, narrow spectrum range, and low power per unit wavelength.

In order to overcome the above-mentioned shortcomings, the present invention proposes a single-point continuous scanning low-power wide-spectrum LED light source and light-emitting method, which can improve the light source and overall performance of the seawater absorbance sensor, and is convenient for application on marine monitoring platforms with limited energy supply such as small buoys/submersibles and underwater gliders.

Summary of the invention

In order to solve the above technical problems, the present invention provides a single-point continuous scanning low-power wide-spectrum LED light source and a light-emitting method to achieve the purposes of low power consumption, wide spectral range and high power per unit wavelength.

To achieve the above object, the technical solution of the present invention is as follows:

A single-point continuous scanning low-power wide-spectrum LED light source comprises a shell, wherein an LED driving and control circuit board is arranged in the shell, a microcontroller is arranged on the LED driving and control circuit board, the microcontroller is connected to an LED lamp panel via a brush, a plurality of LED lamps with different wavelength ranges are distributed on the LED lamp panel along a circumferential direction, the LED driving and control circuit board is connected to a motor via a motor driving board, the motor is connected to a driving wheel 1 via a Maltese cross movement, the driving wheel 1 is gear-engaged with a driven wheel 1, and the LED lamp panel is fixed on the driven wheel 1; a light-through hole is provided on one side of the shell corresponding to the LED lamp panel, an external interface is provided on the other side, and the LED driving and control circuit board is connected to a host computer via the external interface.

In the above scheme, the LED lamp panel is provided with a decoding and LED driving circuit connected to the LED lamp, and a wiring port connected to the decoding and LED driving circuit is provided in the center of the LED lamp panel. Arc holes for the wiring to pass through are provided on the driven wheel 1 and the LED lamp panel, and the brush is connected to the wiring port through the wiring.

In the above scheme, one end of the cable is connected to the decoding and LED driving circuit through the wiring port, and the other end passes through the arc hole to be connected to the rotor of the brush, and the stator of the brush is connected to the microcontroller.

In the above scheme, the Maltese cross movement includes a second driving wheel connected to the output shaft of the motor, and a second driven wheel fixed coaxially with the driving wheel, and the angle of the arc-shaped notch on the second driving wheel is 83°.

In the above scheme, there are 12 LED lamps, which are evenly distributed along the circumference of the LED lamp panel in the order of central wavelength.

In the above scheme, the radius ratio of the driving wheel 1 and the driven wheel 1 is 1:2.

In the above scheme, the driving wheel 1 and the driven wheel 1 are gears with involute teeth.

In the above solution, one light-through hole is provided.

In the above scheme, the wavelength ranges of the 12 LED lamps are: 382.5-397.5nm, 392.5-407.5nm, 402.5-417.5nm, 410.0-430.0nm, 422.5-437.5nm, 427.5-452.5nm, 447.5-472.5nm, 467.5-492.5nm, 472.5-502.5nm, 486.0-514.0nm, 502.5-537.5nm, 532.5-547.5nm.

A light emitting method of a single-point continuous scanning low-power wide-spectrum LED light source includes the following process:

(1) Startup process: After the external power supply is turned on, the microcontroller on the LED driver and control circuit board starts and begins initialization, ensuring that the LED light is turned off and the motor is stopped at startup; then, the microcontroller reads the angle information of the Maltese cross movement saved when it was last turned off, the LED light coding information corresponding to the current action cycle, and assigns initial values to each variable or performs numerical corrections, and then the microcontroller supplies power to the motor;

(2) Working cycle process: the motor provides power to drive the Maltese cross movement to work. The Maltese cross movement drives the driven wheel to rotate through the driving wheel, thereby driving the LED light panel to rotate. The microcontroller determines the rotation of the Maltese cross movement by monitoring the rotation of the motor, thereby controlling the LED light corresponding to the current action cycle. When the LED light panel is in the stop part of the action cycle of the Maltese cross movement, the LED light facing the light hole in the current action cycle is lit; when the LED light panel is in the rotation part of the action cycle of the Maltese cross movement, the LED light facing the light hole in the previous cycle is extinguished, and the cycle continues.

(3) Shutdown process: The microcontroller turns off the power supply to the motor and the LED light panel, and continuously monitors the rotation of the LED light panel during the power outage. After the mechanical structure stops moving, the microcontroller saves the LED light coding information currently facing the light hole and the angle information of the Maltese cross movement. The microcontroller then enters a standby state, waiting to receive a start command from the external interface or waiting for the external interface to cut off the power supply.

Through the above technical scheme, a single-point continuous scanning low-power wide-spectrum LED light source provided by the present invention drives the Maltese cross movement to rotate through a motor. There is a certain time interval between each two actions of the Maltese cross movement. Each action includes two parts: rotation and stay. Each time the LED lamp panel rotates, the LED lamp on the current LED lamp panel that is aligned with the light-through hole is extinguished and moved away in the direction of rotation. The next LED lamp, i.e., the standby position LED lamp, is accurately moved into position, aligned with the light-through hole and lit.

The present invention proposes a single-point continuous scanning low-power wide-spectrum LED light source and light-emitting method, which effectively reduces the power consumption of the light source and broadens the coverage of the light source output spectrum by adopting a small low-power motor and components and arranging multiple LED lamps in a ring for single-point sequential cyclic scanning. At the same time, if the wavelength and range of the spectrum in the embodiment provided by the present invention cannot meet the use requirements, it can be adjusted in the design by increasing or reducing the number and model of LED lamps. In addition, due to the high electro-optical conversion efficiency of LED lamps, each LED lamp can output a large unit wavelength power within the spectral range it is responsible for. Compared with existing small light sources, the present invention has the advantages of low power consumption, wide spectral range, and high output power per unit wavelength.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

FIG1 is a schematic side view of a single-point continuous scanning low-power wide-spectrum LED light source disclosed in an embodiment of the present invention;

FIG2 is a schematic diagram of a mechanical transmission part disclosed in an embodiment of the present invention;

FIG3 is a schematic diagram of an LED lamp panel disclosed in an embodiment of the present invention;

FIG. 4 is a schematic diagram of circuit information flow of the present invention.

In the figure, 1. housing; 2. LED drive and control circuit board; 3. brush; 4. LED lamp panel; 5. LED lamp; 6. motor drive board; 7. motor; 8. light hole; 9. external interface; 10. Maltese cross movement; 11. driving wheel one; 12. driven wheel one; 13. wiring port; 14. wiring; 15. arc hole; 16. driving wheel two; 17. driven wheel two.

Detailed ways

The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

The present invention provides a single-point continuous scanning low-power wide-spectrum LED light source, as shown in FIG1 , which has low power consumption, a wide spectral range, and high power per unit wavelength.

As shown in FIG1 , a single-point continuous scanning low-power wide-spectrum LED light source comprises a housing 1, an LED driving and control circuit board 2 is arranged in the housing 1, a microcontroller is arranged on the LED driving and control circuit board 2, the microcontroller is connected to an LED lamp panel 4 through a brush 3, and 12 LED lamps 5 are evenly distributed along the circumferential direction on the LED lamp panel 4. In order to realize that the LED lamps 5 on the LED lamp panel 4 can be cyclically lit and accepted external control, the present invention selects the brush 3 as a medium to connect the rotating LED lamp panel 4 and the fixed LED driving and control circuit board 2. The output spectrum width of LED lamp 5 is 382.5-547.5nm. The wavelength ranges of the 12 LED lamps numbered D1-D12 arranged from small to large according to the central wavelength are: 382.5-397.5nm, 392.5-407.5nm, 402.5-417.5nm, 410.0-430.0nm, 422.5-437.5nm, 427.5-452.5nm, 447.5-472.5nm, 467.5-492.5nm, 472.5-502.5nm, 486.0-514.0nm, 502.5-537.5nm, 532.5-547.5nm, so the spectral output range of the light source is 382.5-547.5nm. The bandwidth of the 12 LED lights numbered D1-D12 is 35nm at most and 15nm at least. The average unit wavelength power is 1mW/nm at most and 0.13mW/nm at least, reaching the high unit wavelength power of 0.1mW/nm which is only possible with narrowband light sources.

As shown in FIG4 , the LED driving and control circuit board 2 is connected to the motor 7 through the motor driving board 6 to provide the power required for the motor 7 to rotate and realize the control of the motor 7 by the LED driving and control circuit board 2. The connection mode between the LED control and driving circuit board 2 and the motor driving board 6 is a circuit interface plug-in connection or a flat cable connection. The motor driving board 6 has a motor driving circuit for powering the motor. A microcontroller is installed on the LED driving and control circuit board 2, and the microcontroller controls the on and off of the LED lamp 5 on the LED lamp panel 4 according to the mechanical action information obtained from the motor driving board 6. The power supply used in the example provided by the present invention for the LED lamp panel 4 and the LED driving and control circuit board 2 is a 12V DC power supply, and the power supply used in the example provided by the motor driving board 6 is a 3.3V DC power supply. After calculation, the power consumption of the light source is mainly composed of three parts. The first part is composed of the motor driving board 6 and the motor 7, and the power consumption is about 300mW; the second part is composed of the LED lamp panel 4, and the power consumption is about 100mW; the third part is composed of the LED driving and control circuit board 2, and the power consumption is about 70mW. The final total power consumption does not exceed 500mW, which is much lower than the power consumption of existing small broadband light sources (the typical power consumption of the three existing types of small light sources are: small narrow-band light source 500mW, low-power broadband light source 15W, small large unit wavelength power broadband light source 140W).

A light hole 8 is provided on one side of the housing 1 corresponding to the LED lamp panel 4, and an external interface 9 is provided on the other side. The LED drive and control circuit board 2 is connected to the host computer through the external interface 9. A serial communication line and a power line are provided in the connecting line for connecting to the outside, thereby obtaining power and control instructions from the outside.

As shown in FIG2 , the motor 7 is connected to the driving wheel 11 through the Maltese cross movement 10, the driving wheel 11 is meshed with the driven wheel 12, and the LED lamp panel 4 is fixed on the driven wheel 12. As shown in FIG3 , the LED lamp panel is provided with a decoding and LED driving circuit connected to the LED lamp, and the center of the LED lamp panel 4 is provided with a wiring port 13 connected to the decoding and LED driving circuit. The driven wheel 12 and the LED lamp panel 4 are provided with an arc hole 15 for the cable 14 to pass through, and the brush 3 is connected to the wiring port 13 through the cable 14. The components of the decoding and LED driving circuit are symmetrically distributed with the rotation axis as the symmetry axis to ensure that the center of mass of the LED lamp panel is located on the rotation axis. One end of the cable 14 is connected to the decoding and LED driving circuit through the wiring port 13, and the other end passes through the arc hole 15 to connect to the rotor of the brush 3, and the stator of the brush 3 is connected to the microcontroller.

The motor 7 is equipped with a coding disk to provide motor rotation information. The Maltese cross movement 10 includes a driving wheel 16 connected to the motor output shaft, and a driven wheel 17 coaxially fixed to the driving wheel 11. The driving wheel 16 is provided with an arc-shaped notch, and the driven wheel 17 is provided with a strip groove and an arc groove, which can realize the stopping and rotating process of the driving wheel 11.

The present invention provides a single-point continuous scanning low-power wide-spectrum LED light source that drives the Maltese cross movement 10 to rotate through a motor. There is a certain time interval between each two actions of the Maltese cross movement 10. Each action includes two parts: rotation and stop. The arc notch of the driving wheel 2 of the Maltese cross movement 10 is 83°, so the ratio of each rotation time to the static time is 1:3.3. The driven wheel 2 17 rotates 60° each time, so the driving wheel 1 11 rotates 60° each time. Since the radius ratio of the driving wheel 1 11 to the driven wheel 1 12 is 1:2, the driven wheel 1 12 rotates 30° each time. Each time the LED lamp panel 4 rotates, the LED lamp 5 on the current LED lamp panel 4 that is aligned with the light-through hole 8 is extinguished and moved away in the direction of rotation. The next LED lamp 5, that is, the preparatory position LED lamp 5, is accurately moved to the position, aligned with the light-through hole 8, and controlled to light up by the LED drive and control circuit board. In order to make the transmission more stable, the driving wheel 1 and the driven wheel 1 are gears with involute teeth.

The specific working process is as follows:

(1) Startup process:

When the power of the external interface is turned on and a start command is received, the microcontroller on the LED drive and control circuit board starts and begins initialization.

During initialization:

a. The microcontroller will first ensure that the power supply to the "decoding and LED drive circuit" and the "motor drive circuit of the motor system" is turned off, thereby ensuring that the LED light is turned off and the motor is stopped at startup.

b. After that, the microcontroller will read the important information saved when it was shut down last time, including the angle information of the second driving wheel of the Maltese cross movement after the motor system stopped rotating when it was shut down last time, and the LED light code corresponding to the current action cycle. It also includes the method of determining the LED light code and lighting status corresponding to the current action cycle and sending them to the host computer: one is the query type, that is, the host computer sends a query instruction to the microcontroller through the external interface, and the microcontroller sends the LED light code and lighting status corresponding to the current action cycle to the host computer after receiving the instruction; the other is the trigger type, when the LED light code or lighting status changes, the microcontroller sends the LED light code and lighting status corresponding to the current action cycle to the host computer. Use the query type or trigger type setting to make changes according to the instructions sent by the host computer to the microcontroller. When the trigger type sending method is selected, the query type sending program also works. When the query type sending method is selected, the trigger type sending program does not work.

c. Then, the microcontroller will read important values and assign initial values to various variables or make numerical corrections. The read information includes:

i Firmware description of whether the motor in the current hardware is equipped with a speed-regulating gear set, that is, how many times the motor rotates when the second driving wheel of the Maltese cross movement rotates one circle. Since the current example hardware is not equipped with a speed-regulating gear set, the value read here is 1.

ii The description of the Maltese cross movement in the current hardware in the firmware, that is, the ratio of the second rotation time of the driving wheel to the total time of the action cycle. The corresponding hardware value here is 10:43.

iii The firmware describes the number of LED lights in the current hardware. The current value is 12.

iv The current motor encoder value, that is, the current rotation status of the motor.

According to the above information, perform initialization and value correction operations:

i Assign initial values to related variables based on the description in the firmware of whether the motor in the current hardware is equipped with a speed regulating gear set.

ii. Assign initial values to related variables according to the description of the Maltese cross movement in the current hardware in the firmware.

iii. According to the description of the number of LED lights in the current hardware in the firmware, set the maximum value of the LED light code. The corresponding value of the current hardware is 0x0B.

iv. According to the current motor encoder disk value, correct the position data of the Maltese cross movement driving wheel 2 read when the motor stopped last time.

d. Finally, the microcontroller starts the work cycle based on the currently known information.

The microcontroller will choose whether to light up the LED light corresponding to the current action cycle according to the rotation position of the second driving wheel of the Maltese cross movement in the known information, and start to report the LED light code and lighting status corresponding to the current working cycle to the host computer according to the LED light code and lighting status or wait for the query command to receive it, or when the LED light code or lighting status changes, send the LED light code and lighting status corresponding to the current working cycle to the host computer, and support query command query. There are two conditions required to light up an LED light: first, the microcontroller outputs the code corresponding to the LED light to the decoding and LED driving circuit. The current hardware has 12 LED lights, so the code value range is 0x00 to 0x0B; second, the microcontroller turns on the power supply to the decoding and LED driving circuit.

ii The microcontroller turns on the power supply of the motor drive circuit in the motor drive board and the motor starts to rotate.

(2) Working cycle process:

The main actions of the working cycle are: the motor of the motor system provides power to drive the Maltese cross movement to work, the Maltese cross movement drives the driving wheel 11 and the driven wheel 12 to work, thereby driving the LED light panel to rotate, the microcontroller determines the rotation of the Maltese cross movement driving wheel 2 by monitoring the rotation of the motor, and the microcontroller determines and controls the LED light corresponding to the current action cycle according to the rotation of the Maltese cross movement driving wheel 2. Describe each action in turn:

The three parts of the motor system: the motor, the encoder, and the motor drive circuit, have the following functions: the power source of the mechanical device, monitoring the rotation of the motor, and providing power to the motor. After the startup process is completed, the power supply of the motor drive circuit is restored, so that the motor starts to rotate. Since the motor here is not equipped with a speed regulating gear set (it can be installed as needed, but the corresponding parameters in the firmware need to be modified), the motor rotor is directly connected to the Maltese cross movement driving wheel 2 16, and the Maltese cross movement driving wheel 2 16 rotates synchronously with the motor rotor, and then the Maltese cross movement driven wheel 2 17 will periodically stop and rotate a certain angle according to the rotation of the driving wheel 2. The ratio of the rotating part to the stopping part in the action cycle is 1:3.3, and the certain angle value of rotation during rotation is 60°.

The Maltese cross movement driven wheel 2 17 and driving wheel 1 11 are directly connected coaxially and rotate synchronously. Here, the driving wheel 1 of the reduction gear set is half the radius of the driven wheel 1, so when the Maltese cross movement driven wheel 2 17 rotates 60°, the driving wheel 1 of the reduction gear set rotates 60°, and the driven wheel 12 of the reduction gear set rotates 30°. Since the reduction gear set is a gear set, the gear tooth profile is an involute tooth profile, so the transmission of the reduction gear set is continuous and stable, so the action of the driven wheel 1 of the reduction gear set is periodic stop and rotation of a certain angle, the ratio of the rotating part and the stopping part in the action cycle is 1:3.3, and the certain angle value of rotation during rotation is 30°.

The driven wheel 12 of the reduction gear set is coaxially connected to the LED lamp panel 4 and rotates synchronously, so the LED lamp panel 4 moves to stop and rotate a certain angle periodically. The ratio of the rotating part to the stopping part in the action cycle is 1:3.3, and the certain angle value of rotation during rotation is 30°. The LED lamp panel is equipped with a decoding and LED driving circuit. In order to connect the decoding and LED driving circuit to the microcontroller, the driven wheel 1 of the reduction gear set is fixed on a brush. The decoding and LED driving circuit is connected to one end of the rotor of the brush circuit through the opening on the LED lamp panel and the driven wheel 1 of the reduction gear set using a wiring harness, and one end of the stator of the brush circuit is connected to the interface of the microcontroller. The rotor of the brush rotates synchronously with the driven wheel 1 of the reduction gear set, and the stator of the brush is fixed on the protective housing and does not rotate.

From the above, we can know that the microcontroller can monitor the rotation of the LED lamp panel by monitoring the rotation of the motor, thereby determining the operation of the decoding and LED drive circuit. The process is:

The microcontroller continuously reads the value of the encoder disk in the motor system to determine the rotation position of the motor, and then determines the rotation of the LED lamp panel through the above-mentioned mechanical transmission process.

When the LED lamp panel is in the stop part of the action cycle, the microcontroller lights up the LED lamp corresponding to the current action cycle.

When the LED light panel is in the rotation part of the action cycle, the microcontroller turns off the LED light corresponding to the previous cycle, calculates the LED light code corresponding to the current cycle and assigns it to the relevant control variable.

The LED lights corresponding to the current action cycle are defined here: when the LED light panel is in the stop part of the action cycle, the LED lights are aimed at the light holes; when the LED light panel is in the rotation part of the action cycle, the LED lights are about to be aimed at the light holes.

During the working cycle, the program that reports the LED light code and lighting status corresponding to the current working cycle to the upper computer is executed simultaneously, and the program will perform the corresponding function according to the setting.

(3) Closing process:

After receiving the shutdown command from the external interface, the microcontroller will first shut down the motor drive circuit and the power supply of the decoding and LED drive circuit in the motor system, causing the motor to stop and the LED light to go out, but the motor and mechanical structure will continue to operate for a short period of time due to inertia. During this period, the microcontroller will continue to monitor the rotation of the LED light panel and calculate the LED light code corresponding to the current LED light panel action cycle.

After the mechanical structure stops moving, the microcontroller saves the LED light code corresponding to the current cycle and the angle information of the current Maltese cross movement driving wheel 2, and saves the setting information of the method of reporting the LED light code and lighting status corresponding to the current working cycle to the upper computer.

The microcontroller is in standby mode, waiting to receive a start command from the external interface, or waiting for the external interface to cut off power.

The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims (7)

1. The LED light source comprises a shell, an LED driving and control circuit board is arranged in the shell, a microcontroller is arranged on the LED driving and control circuit board and is connected with an LED lamp panel through an electric brush, a plurality of LED lamps with different wavelength ranges are distributed on the LED lamp panel along the circumferential direction, the LED driving and control circuit board is connected with a motor through a motor driving board, the motor is connected with a driving wheel I through a Malta cross movement, the driving wheel I is meshed with a driven wheel I through a gear, and the LED lamp panel is fixed on the driven wheel I; a light hole is formed in one side of the shell, corresponding to the LED lamp panel, and an external interface is arranged on the other side of the shell; the LED lamp panel is provided with a decoding and LED driving circuit connected with an LED lamp, the center of the LED lamp panel is provided with a wiring port connected with the decoding and LED driving circuit, the driven wheel I and the LED lamp panel are provided with arc-shaped holes through which a flat cable can pass, and the electric brush is connected with the wiring port through the flat cable; one end of the flat cable is connected with the decoding and LED driving circuit through a wiring port, the other end of the flat cable passes through the arc-shaped hole to be connected with a rotor of the electric brush, and a stator of the electric brush is connected with the microcontroller;

The light emitting method comprises the following steps:

(1) The starting process comprises the following steps: switching on an external power supply, starting and initializing a microcontroller on the LED driving and controlling circuit board, and ensuring that the LED lamp is closed and the motor is stopped when the LED driving and controlling circuit board is started; then, the microcontroller reads the angle information of the maltese cross movement stored in the last closing process and the LED lamp coding information corresponding to the current action period, and gives an initial value or carries out numerical correction on each variable, and then the microcontroller supplies power to the motor;

(2) The working cycle process comprises the following steps: the motor provides power to drive the maltese cross movement to work, the maltese cross movement drives the driven wheel to rotate through the driving wheel, so that the LED lamp panel is driven to rotate, the microcontroller determines the rotation condition of the maltese cross movement through monitoring the rotation condition of the motor, so that the LED lamp corresponding to the current action period is controlled, and when the LED lamp panel is positioned at the stop part of the maltese cross movement action period, the LED lamp corresponding to the light hole in the current action period is lightened; when the LED lamp panel is positioned at the rotating part of the action cycle of the Malta cross movement, the LED lamp of the previous cycle, which is opposite to the light-transmitting hole, is extinguished, and the cycle is performed;

(3) Closing: the microcontroller is powered off by the motor and the LED lamp panel, continuously monitors the rotation condition of the LED lamp panel in the power-off process, stores the LED lamp coding information and the angle information of the Malta cross movement which are just opposite to the light hole at present after the standby mechanical structure stops acting, and then is in a standby state, waits for receiving a starting instruction from an external interface or waits for the external interface to cut off the power supply.

2. The method for emitting light of the single-point continuous scanning low-power-consumption wide-spectrum LED light source according to claim 1, wherein the maltese cross movement comprises a driving wheel II connected with an output shaft of a motor and a driven wheel II coaxially fixed with the driving wheel I, and an angle of an arc-shaped notch formed in the driving wheel II is 83 degrees.

3. The method for lighting the single-point continuous scanning low-power-consumption wide-spectrum LED light source according to claim 1, wherein the number of the LED lamps is 12, and the LED lamps are uniformly distributed on the LED lamp panel along the circumference according to the order of the central wavelength.

4. The method for illuminating a single-point continuous scanning LED light source with low power consumption and broad spectrum according to claim 1, wherein the ratio of the radius of the driving wheel one to the radius of the driven wheel one is 1:2.

5. The method for illuminating a single point continuous scanning LED light source with low power consumption and broad spectrum according to claim 1, wherein the driving wheel one and the driven wheel one are involute toothed gears.

6. The method for lighting the low-power-consumption wide-spectrum LED light source with single-point continuous scanning according to claim 1, wherein 1 light-transmitting hole is arranged.

7. The method for emitting light from a single-point continuous scanning low-power-consumption wide-spectrum LED light source according to claim 1, wherein the wavelength ranges of 12 LED lamps are respectively ：382.5-397.5nm、392.5-407.5nm、402.5-417.5nm、410.0-430.0nm、422.5-437.5nm、427.5-452.5nm,447.5-472.5nm、467.5-492.5nm、472.5-502.5nm、486.0-514.0nm、502.5-537.5nm、532.5-547.5nm.