CN115843138A

CN115843138A - Novel LED lamp bead and luminous intensity detection method

Info

Publication number: CN115843138A
Application number: CN202211239575.XA
Authority: CN
Inventors: 季璐
Original assignee: Beijing Huilang Times Technology Co Ltd
Current assignee: Beijing Huilang Times Technology Co Ltd
Priority date: 2022-10-11
Filing date: 2022-10-11
Publication date: 2023-03-24

Abstract

The invention provides a novel LED lamp bead and a luminous intensity detection method, and relates to the field of LED lamp beads. The novel LED lamp bead comprises an LED light emitting part, an LED lamp bead bottom plate, a light transmitting cover, a first light intensity sensor, a second light intensity sensor, a third light intensity sensor and a support piece. The LED lamp bead light intensity detection device has the advantages that the light intensity detection of the LED light emitting component is increased, so that the fault that the LED lamp bead has working current but does not emit light can be diagnosed. Moreover, the influence of external environment illumination on light intensity detection of the LED light emitting component can be eliminated by optimizing the position relation of each component inside the novel LED lamp bead, so that the fault condition of the LED light emitting component can be better analyzed. In addition, in the luminous intensity detection method, after the illumination detection intensity value output by each light intensity sensor is obtained, the algorithm calculation is carried out on the illumination detection intensity value, and the luminous intensity value of the LED lamp bead can be obtained, so that the luminous intensity of the LED luminous component is normalized.

Description

Novel LED lamp bead and luminous intensity detection method

Technical Field

The invention relates to the field of LED lamp beads, in particular to a novel LED lamp bead and a luminous intensity detection method.

Background

Due to the characteristics of low power consumption, high photoelectric conversion rate, low failure rate and the like, the LED light source is widely applied to various fields, and incandescent lamps are still used for illuminating specific environments in many industrial fields. In many areas of safety, because LED lamps have failure modes different from incandescent lamps, new failure diagnosis designs are added to be considered while using LED lamps instead of incandescent lamps for illumination.

In the prior art, fault diagnosis of LED lamps has been based on measuring the voltage and current of the LED lamp, i.e. using the current to normalize the brightness of the LED lamp. However, the LED lamp has a failure mode that the LED lamp is dark in intensity under the condition that the voltage and the current at the two ends of the LED lamp are not changed, and the LED lamp is not lit under the condition that the voltage and the current at the two ends of the LED lamp are not changed in an extreme case. When the LED lamp has the fault, the circuit which detects the voltage and the current can also consider that the LED lamp is in a normally luminous state, so that the danger hidden danger is easily caused.

Disclosure of Invention

In order to overcome the above problems or at least partially solve the above problems, embodiments of the present invention provide a novel LED lamp bead and a method for detecting light emission intensity, which increase the light intensity detection of an LED light emitting component by optimizing the structure of the LED lamp bead, so that a fault of the LED lamp bead that has a working current but does not emit light can be diagnosed. Moreover, the influence of external environment illumination on light intensity detection of the LED light emitting component can be eliminated by optimizing the position relation of each component inside the novel LED lamp bead, so that the fault condition of the LED light emitting component can be better analyzed.

The embodiment of the invention is realized by the following steps:

the embodiment of the application provides a novel LED lamp bead, the novel LED lamp bead comprises an LED luminous component, an LED lamp bead bottom plate, a translucent cover, a first light intensity sensor, a second light intensity sensor, a third light intensity sensor and a support piece, the LED luminous component is arranged at the position of the central point of the LED lamp bead bottom plate, the support piece is arranged on the LED lamp bead bottom plate, the first light intensity sensor is arranged at the free end of the support piece, the photosensitive end of the first light intensity sensor faces the direction of the LED luminous component, the second light intensity sensor and the third light intensity sensor are respectively arranged on the LED lamp bead bottom plate, the second light intensity sensor is arranged at the position of the backlight surface area of the support piece, the third light intensity sensor is arranged at the position outside the backlight surface area of the support piece, the photosensitive end of the second light intensity sensor is arranged at one end far away from the LED lamp bead bottom plate, the translucent cover is arranged on the LED lamp bead bottom plate, the LED luminous component, the first light intensity sensor, the second light intensity sensor, the third light intensity sensor and the support piece are arranged inside the translucent cover, the first light intensity sensor, the second light intensity sensor and the third light intensity sensor are respectively penetrate through wires, and only detect the wavelength range of the light emitted by the LED luminous component, and only detect the light wavelength range of the light emitted from the LED luminous component.

In some embodiments of the invention based on the first aspect, the ratio of the height of the support to the height of the second light intensity sensor is 2.5 to 3.5.

In some embodiments of the present invention, the support is made of an opaque material.

In some embodiments of the invention, the LED light emitting component passes through the LED lamp bead base plate through a wire for connecting with an external power supply circuit, and the first light intensity sensor, the second light intensity sensor and the third light intensity sensor respectively pass through the LED lamp bead base plate through wires for connecting with an external signal detection circuit.

In some embodiments of the present invention, the driving signal output by the external power supply circuit is a PWM signal.

In a second aspect, an embodiment of the present application provides a method for detecting a luminous intensity, including the following steps:

acquiring illumination detection intensity values of a first light intensity sensor, a second light intensity sensor and a third light intensity sensor, and recording the illumination detection intensity values as G1, G2 and G3 respectively;

the luminous intensity value GL of the LED luminous element is obtained using the formula GL = G1-G2+ G3.

Based on the second aspect, in some embodiments of the invention, further comprising:

the luminous intensity values of the LED luminous components are normalized by the luminous intensity values GL.

Compared with the prior art, the embodiment of the invention has at least the following advantages or beneficial effects:

firstly, the embodiment of the invention provides a novel LED lamp bead, which increases the light intensity detection of an LED light-emitting component by optimizing the structure of the LED lamp bead, so that after the output values of a first light intensity sensor, a second light intensity sensor and a third light intensity sensor are obtained, the light intensity of the LED lamp bead can be accurately nominal, the fault diagnosis and analysis of the LED lamp bead in the prior art are not required to be only stopped on measuring the voltage and the current of the LED lamp bead, namely the current is used for normalizing the brightness of the LED lamp bead. And through optimizing the position relation structure of each subassembly in LED lamp pearl, can also eliminate the influence of outside environment illumination to LED lamp pearl light intensity detection to can be better carry out the analysis to its trouble condition.

In addition, the embodiment of the present invention further provides a light emitting intensity detecting method, which performs algorithm calculation on the light emitting intensity values after obtaining the illumination detection intensity values output by the first light intensity sensor, the second light intensity sensor and the third light intensity sensor, so as to obtain an accurate light emitting intensity value GL of the LED light emitting component, so as to normalize the light emitting intensity of the LED light emitting component.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural diagram of an embodiment of a novel LED lamp bead of the present invention;

FIG. 2 is a schematic structural diagram of a light intensity sensor according to an embodiment of the novel LED lamp bead of the present invention;

FIG. 3 is a schematic structural diagram of an embodiment of a novel LED lamp bead of the present invention;

FIG. 4 is a schematic diagram of a circuit connection of a light intensity sensor according to an embodiment of the novel LED lamp bead of the present invention;

fig. 5 is a flowchart illustrating a method for detecting a luminous intensity according to an embodiment of the present invention.

Icon: 1. an LED light emitting part; 2. an LED lamp bead base plate; 3. a light-transmitting cover; 4. a first light intensity sensor; 5. a second light intensity sensor; 6. a third light intensity sensor; 7. a support member; 8. a light intensity sensor; 9. a light sensing end; 10. internal direct light; 11. internally reflecting light; 12. external light; 13. and a wire.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an orientation or a positional relationship based on an orientation or a positional relationship shown in the drawings, or an orientation or a positional relationship which is usually arranged when the product of the present invention is used, it is only for convenience of description and simplification of the description, but does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the appearances of the terms "first," "second," "third," etc. in this specification are not intended to be limiting, but rather are merely to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not require that the components be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the embodiments of the present invention, the term "plurality" if present means at least 2.

In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Examples

Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The embodiments described below and the individual features of the embodiments can be combined with one another without conflict.

Referring to fig. 1-3, an embodiment of the present invention provides a novel LED lamp bead, which includes an LED light emitting component 1, an LED lamp bead base plate 2, a light transmissive cover 3, a first light intensity sensor 4, a second light intensity sensor 5, a third light intensity sensor 6, and a support 7, where the LED light emitting component 1 is disposed at a central point of the LED lamp bead base plate 2, the support 7 is disposed on the LED lamp bead base plate 2, the first light intensity sensor 4 is disposed at a free end of the support 7, a light sensing end 9 of the first light intensity sensor 4 faces a direction of the LED light emitting component 1, the second light intensity sensor 5 and the third light intensity sensor 6 are respectively disposed on the LED lamp bead base plate 2, the second light intensity sensor 5 is located at a position of a backlight area of the support 7, and the third light intensity sensor 6 is located at a position other than the position of the backlight area of the support 7, the sensitization end 9 of second light intensity sensor 5 is located the one end of keeping away from LED lamp pearl bottom plate 2, the sensitization end 9 of third light intensity sensor 6 is located the one end of keeping away from LED lamp pearl bottom plate 2, translucent cover 3 is located on LED lamp pearl bottom plate 2, LED luminous component 1, first light intensity sensor 4, second light intensity sensor 5, third light intensity sensor 6 and support piece 7 all locate translucent cover 3 inside, LED luminous component 1, first light intensity sensor 4, second light intensity sensor 5 and third light intensity sensor 6 are equallyd divide and are passed LED lamp pearl bottom plate 2 through wire 13 respectively and link to each other with the outside, first light intensity sensor 4 only detects the light in the luminous wavelength range of LED luminous component 1, second light intensity sensor 5 only detects the light in the luminous wavelength range of LED luminous component 1, third light intensity sensor 6 only detects the light outside the luminous wavelength range of LED luminous component 1.

It should be noted that, in terms of the operation principle, the light intensity sensor 8 is a sensor manufactured by using the hot spot effect principle. The sensor mainly uses detection components with high response to weak light, the sensing components are like a photosensitive matrix of a camera, a wire-wound electroplating type multi-contact thermopile is arranged in the sensing components, a black layer (corresponding to a photosensitive end 9 in fig. 2) with high absorptivity is coated on the surface of the thermopile, a connection point is arranged on a sensing surface, a cold junction is arranged in a machine body, and the cold junction generates a temperature difference potential. In the linear range, the output signal is proportional to the illumination radiance. The visible light penetrating through the light-transmitting sheet irradiates to the imported photosensitive diode, the photosensitive diode is converted into an electric signal according to the intensity of the visible light, and then the electric signal enters a processor system of the sensor, so that a binary signal required to be obtained is output. That is to say, the first light intensity sensor 4, the second light intensity sensor 5 and the third light intensity sensor 6 are all sensors manufactured by adopting a hot spot effect principle, and different models can be selected to be set according to actual needs when the sensors are actually applied to the work of the novel LED lamp bead.

Specifically to above-mentioned embodiment, it is through giving out light part 1 with LED and locating the central point position of LED lamp pearl bottom plate 2 to make LED give out light part 1 can be to 3 outer even light that give off of printing opacity cover. Wherein, first light intensity sensor 4 locates the free end of support piece 7, and the sensitive end 9 of first light intensity sensor 4 is towards the direction that LED luminous component 1 is located to first light intensity sensor 4 only detects the light in the luminous wavelength range of LED luminous component 1, makes the output value of first light intensity sensor 4 mainly receive the inside direct light 10 that LED luminous component 1 sent and the inside reverberation 11 that produces after the light that LED luminous component 1 sent through the inside reflection of printing opacity cover 3 influences. Since the second intensity sensor 5 is located at the position of the backlight surface area of the supporting member 7, the light emitted by the LED lighting member 1 is shielded by the supporting member 7 before reaching the position of the second intensity sensor 5, so that the output value of the second intensity sensor 5 is not affected by the light emitted by the LED lighting member 1, which is mainly affected by the external light 12 that is externally irradiated to the light sensing end 9 after passing through the translucent cover 3, and is only affected by the external light 12 with the same wavelength as the light emitted by the LED lighting member 1. In addition, the third sensor only detects light within the light emitting wavelength range of the LED light emitting component 1, so that the output value of the third sensor is mainly influenced by the external light 12 filtered by the external light 12 through the translucent cover 3, and is not influenced by the light emitted by the LED light emitting component 1. That is to say, through optimizing the structure of novel LED lamp pearl for after obtaining first light intensity sensor 4, second light intensity sensor 5 and third light intensity sensor 6's output value, will be used for the luminous intensity of accurate nominal LED lamp pearl, need not only stop on measuring the voltage and the electric current of LED lamp pearl like the fault diagnosis analysis of LED lamp pearl among the prior art, use the luminance of nominal LED lamp pearl with electric current. And through optimizing the position relation structure of each subassembly in LED lamp pearl, can also eliminate the influence of outside environment illumination to LED lamp pearl light intensity detection to can be better carry out the analysis to its trouble condition. Referring to fig. 1 and 4, the first light intensity sensor 4, the second light intensity sensor 5, and the third light intensity sensor 6 are connected to an external MCU circuit through wires 13 respectively passing through the LED lamp bead base plate 2, so that the MCU circuit can perform operation on the obtained output values of the first light intensity sensor 4, the second light intensity sensor 5, and the third light intensity sensor 6, and then the obtained output values are used to normalize the brightness of the LED lamp beads.

Specifically, referring to fig. 5, an embodiment of the present invention further provides a method for detecting a light emitting intensity, which is used to perform an operation on output values of a first light intensity sensor 4, a second light intensity sensor 5, and a third light intensity sensor 6, and includes the following steps:

step S101: acquiring illumination detection intensity values of a first light intensity sensor 4, a second light intensity sensor 5 and a third light intensity sensor 6, and recording the illumination detection intensity values as G1, G2 and G3 respectively;

step S102: the luminous intensity value GL of the LED luminous member 1 is obtained using the formula GL = G1-G2+ G3.

In the above steps, after the illumination detection intensity values output by the first light intensity sensor 4, the second light intensity sensor 5 and the third light intensity sensor 6 are obtained and recorded as G1, G2 and G3, the light emitting intensity value GL of the LED light emitting component 1 can be obtained by using the formula GL = G1-G2+ G3. That is, instead of using only voltage and current to normalize the brightness of the LED lamp bead as in the prior art, the above formula can be used to obtain an accurate luminous intensity value GL of the LED lighting component 1. So, under the unchangeable condition of both ends voltage current appears in LED luminous component 1, the luminous of LED luminous component 1 darkens, perhaps under this kind of extreme condition that just does not light under the unchangeable condition of LED luminous component 1 both ends voltage current, also can be through the luminous intensity value GL of obtaining accurate LED luminous component 1, then be used for carrying out more accurate analysis to its fault situation.

It should be noted that, in the above steps, only one method for preliminarily obtaining the light-emitting intensity value GL of the LED light-emitting component 1 is used, and in order to improve the accuracy value of the final data obtaining, the light-emitting intensity values GL may be multiplied by corresponding coefficients before G1, G2, and G3, so as to perform a certain correction process on G1, G2, and G3 (due to the influence of components and mounting accuracy, there is a certain deviation between the actual measurement value and the theoretical value), so that the finally obtained light-emitting intensity value GL is more accurate and effective. For example, if the coefficients multiplied before G1, G2, and G3 are divided into a, b, and c, GL = a × G1-c × G2+ c × G3, and the range of values of a, b, and c (typically, the range of values is 0.8 to 1.2) is adjusted and corrected, so that the corrected accurate luminous intensity value GL can be obtained. Of course, the specific values of a, b and c can be tested for many times according to actual conditions so as to obtain the accurate values.

Additionally, in some embodiments of the present invention, further comprising: the luminous intensity value of the LED luminous member 1 is normalized by the luminous intensity value GL. That is, after obtaining the accurate light emitting intensity value GL through the above steps, the light emitting intensity value GL can be used to perform the nominal LED light emitting component 1 light emitting intensity value, not only by performing the nominal current voltage value across the light emitting component, but also the nominal result is more accurate and effective.

Referring to fig. 1-3, in some embodiments of the present invention, the ratio of the height of the supporting member 7 to the height of the second light intensity sensor 5 is 2.5-3.5.

Because second light intensity sensor 5 is located the regional position in the backlight of support piece 7, therefore the difference of value is can influence the effect of sheltering from of support piece 7 to second light intensity sensor 5 to the height ratio value of support piece 7 and second light intensity sensor 5. In the above embodiment, the ratio of the height of the supporting member 7 to the height of the second light intensity sensor 5 is set to be 2.5-3.5, so that the supporting member 7 does not occupy too high height under the condition of ensuring that the shielding effect of the supporting member 7 on the second light intensity sensor 5 is better, thereby affecting the height of the whole LED lamp bead. In addition, because the width of the supporting member 7 also affects the shielding effect of the second light intensity sensor 5, the width of the supporting member 7 also needs to be reasonably set when the height of the supporting member 7 is set, so as to better shield the second light intensity sensor 5 (so as to better shield the light emitted by the LED light emitting component 1).

Illustratively, the ratio of the height of the support 7 to the height of the second light intensity sensor 5 may be 3, and the ratio of the width of the support 7 to the width of the second light intensity sensor 5 may be 1.3.

Referring to fig. 1-3, in some embodiments of the present invention, the supporting member 7 is made of opaque material.

In the above embodiment, since it is required to ensure that the supporting member 7 can better shield the light emitted from the LED light emitting component 1 for the second light intensity sensor 5, the supporting member 7 is made of an opaque material, so that the light shielding effect of the supporting member 7 can be further improved.

Referring to fig. 1-3, in some embodiments of the present invention, an LED light emitting component 1 passes through an LED light bead base plate 2 through a wire 13 for connecting with an external power supply circuit, and a first light intensity sensor 4, a second light intensity sensor 5, and a third light intensity sensor 6 respectively pass through the LED light bead base plate 2 through wires 13 for connecting with an external signal detection circuit.

In the above embodiment, through sending LED luminous component 1 through wire 13 and passing LED lamp pearl bottom plate 2 and external power supply circuit and link to each other to and pass LED lamp pearl bottom plate 2 and external signal detection circuit respectively through wire 13 with first light intensity sensor 4, second light intensity sensor 5 and third light intensity sensor 6 and link to each other the back, will be used for guaranteeing the normal work of LED lamp pearl. After the external signal detection circuit acquires the signal output values of the first light intensity sensor 4, the second light intensity sensor 5 and the third light intensity sensor 6, the external signal detection circuit can perform corresponding operation processing on the signal output values, so that the luminous intensity of the LED luminous component 1 can be normalized.

Illustratively, in some embodiments of the invention, the driving signal output by the external power supply circuit is a PWM signal.

In the above embodiment, since the LED lighting component 1 is substantially a diode, fast switching can be realized, and the allowable switching speed can be as high as more than microseconds, which is incomparable with any lighting device. When driven by a PWM signal, the brightness of the LED light emitting section 1 can be changed by changing the pulse width. The dimming mode is like a water gate which is switched on and off in more than microseconds, and the switching frequency of the water gate is fast enough that the switching state of the water gate cannot be identified by naked eyes, so that the switching frequency can be identified only by the quantity of downstream water. In addition, the duty ratio (effective flow rate) of the output water flow is changed by the sluice, and the instantaneous water pressure and the instantaneous flow rate of the water flow are not changed, so that the operation of hydroelectric power generation cannot be influenced by the switching action of the sluice up to more than microseconds, and the amount of the water flowing downwards and the total amount of the generated power are changed because the instantaneous water pressure and the instantaneous flow rate are not changed. That is, dimming of LED light emitting unit 1 by the PWM signal does not change the instantaneous voltage and instantaneous current input to the PN junction of LED light emitting unit 1, but changes the duty ratio of the output current, thereby changing the luminance thereof. Therefore, by setting the driving signal output by the external power supply circuit as the PWM signal, there will be the following advantages: no chromatographic shift of the LED light emitting component 1 will occur, since the LED light emitting component 1 is always operated between full amplitude current and 0; the method has extremely high dimming accuracy, and the pulse waveform can be completely controlled to high accuracy, so that one-ten-thousandth accuracy is easily realized; even if the light is adjusted in a large range, the flicker phenomenon can not occur, because the working condition (voltage boosting ratio or voltage reducing ratio) of the constant current source can not be changed, the problems of overheating and the like can not occur; (4) Control can be combined with digital (DALI/DSI/DMX 512) control techniques because the digital control signal is easily converted to a PWM signal.

In summary, the embodiment of the present invention provides a novel LED lamp bead, which increases the light intensity detection of the LED light emitting component 1 by optimizing the structure of the LED lamp bead, so that after the output values of the first light intensity sensor 4, the second light intensity sensor 5, and the third light intensity sensor 6 are obtained, the light emitting intensity of the LED lamp bead can be accurately normalized, and the failure diagnosis and analysis of the LED lamp bead in the prior art are not only stopped on measuring the voltage and the current of the LED lamp bead, that is, the current is used to normalize the brightness of the LED lamp bead. And through optimizing the position relation structure of each subassembly in LED lamp pearl, can also eliminate the influence of outside environment illumination to LED lamp pearl light intensity detection to can be better carry out the analysis to its trouble condition. In addition, the embodiment of the present invention further provides a light emitting intensity detecting method, which performs an algorithm calculation on the illumination detection intensity values output by the first light intensity sensor 4, the second light intensity sensor 5 and the third light intensity sensor 6 after obtaining the illumination detection intensity values, so as to obtain an accurate light emitting intensity value GL of the LED light emitting component 1, thereby performing light emitting intensity normalization on the LED light emitting component 1.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

It will be evident to those skilled in the art that the present application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A novel LED lamp bead is characterized by comprising an LED luminous component, an LED lamp bead bottom plate, a light-transmitting cover, a first light intensity sensor, a second light intensity sensor, a third light intensity sensor and a supporting piece, the LED light emitting component is arranged at the central point of the LED lamp bead bottom plate, the supporting piece is arranged on the LED lamp bead bottom plate, the first light intensity sensor is arranged at the free end of the supporting piece, the light sensing end of the first light intensity sensor faces the direction of the LED luminous component, the second light intensity sensor and the third light intensity sensor are respectively arranged on the LED lamp bead bottom plate, the second light intensity sensor is positioned at the position of the backlight area of the support, the third light intensity sensor is positioned at the position outside the position of the backlight area of the support, the light-sensitive end of the second light intensity sensor is positioned at one end far away from the LED lamp bead bottom plate, the light-sensitive end of the third light intensity sensor is positioned at one end far away from the LED lamp bead bottom plate, the light-transmitting cover is arranged on the LED lamp bead bottom plate, the LED luminous component, the first light intensity sensor, the second light intensity sensor, the third light intensity sensor and the support piece are all arranged in the light-transmitting cover, the LED luminous component, the first light intensity sensor, the second light intensity sensor and the third light intensity sensor respectively pass through the LED lamp bead bottom plate through leads to be connected with the outside, the first light intensity sensor detects only light within a light emitting wavelength range of the LED light emitting part, the second light intensity sensor detects only light within a light emitting wavelength range of the LED light emitting part, the third light intensity sensor only detects light outside the light emitting wavelength range of the LED light emitting component.

2. The novel LED lamp bead according to claim 1, wherein the ratio of the height of the supporting member to the height of the second light intensity sensor is 2.5-3.5.

3. The novel LED lamp bead according to claim 1, wherein said support member is made of opaque material.

4. The novel LED lamp bead according to claim 1, wherein the LED light emitting component passes through the LED lamp bead base plate through a wire for connecting with an external power supply circuit, and the first light intensity sensor, the second light intensity sensor and the third light intensity sensor respectively pass through the LED lamp bead base plate through wires for connecting with an external signal detection circuit.

5. The novel LED lamp bead according to claim 4, wherein the driving signal outputted from the external power supply circuit is a PWM signal.

6. A luminous intensity detection method applied to the novel LED lamp bead as claimed in any one of claims 1-5, characterized by comprising the following steps:

acquiring illumination detection intensity values of the first light intensity sensor, the second light intensity sensor and the third light intensity sensor, and recording the illumination detection intensity values as G1, G2 and G3 respectively;

7. The method for detecting a luminous intensity according to claim 6, further comprising:

and the luminous intensity value GL of the LED luminous component is used for carrying out normalization on the luminous intensity value.