A method and system for controlling energy saving of LED lamps

Abstract

The present invention relates to the field of lighting control, and in particular to an energy-saving control method and system for LED lamps. The energy-saving control method for LED lamps provided by the present invention comprises the following steps: obtaining the ambient light intensity of the environment in which the LED lamp is located; obtaining the light intensity level parameter of the environment in which the LED lamp is located through the ambient light intensity; based on the light intensity level parameter, respectively evaluating the membership of the environment in which the LED lamp is located at different light intensity levels; using the membership of the environment in which the LED lamp is located at different light intensity levels, obtaining the target output brightness of the LED lamp; and adjusting the output brightness of the LED lamp according to the target output brightness. The energy-saving control method for LED lamps provided by the present invention can automatically adjust the brightness of the LED lamp according to the change in light intensity, so as to ensure that the regulated LED lamp can achieve the best lighting effect and energy-saving effect under different environmental conditions.

Description

Technical Field

[0001] The present invention relates to the field of lighting control, and in particular to an energy-saving control method and system for LED lamps. Background Art

[0002] As global energy consumption continues to increase, energy conservation has become one of the most pressing issues in various industries. In the field of lighting, traditional high-energy-consuming lamps are gradually being replaced by efficient LED lamps. However, how to further improve the energy-saving effect of LED lamps is still an important research direction, especially in some scenes that require long-term lighting, such as streets, tunnels, public buildings and industrial facilities.

[0003] Existing LED lamp control methods usually rely on preset schedules or manual adjustments, which have many limitations in practical applications. First, the preset schedule is difficult to cope with real-time changes in ambient light intensity, resulting in high brightness when there is sufficient actual light, causing unnecessary energy waste. Second, manual adjustment requires human intervention, which not only increases management costs, but may also lead to untimely adjustments due to human negligence, affecting lighting effects and energy-saving efficiency. Summary of the invention

[0004] In view of the deficiencies of the prior art and the needs of practical applications, the present invention provides an energy-saving control method and system for LED lamps, which aims to realize automatic adjustment of the brightness of LED lamps under different ambient light intensity conditions to achieve optimal energy-saving effect and lighting quality.

[0005] In the first aspect, the energy-saving control method of LED lamps provided by the present invention includes the following steps: obtaining the ambient light intensity of the environment in which the LED lamp is located; obtaining the light intensity level parameter of the environment in which the LED lamp is located through the ambient light intensity; based on the light intensity level parameter, respectively evaluating the membership of the environment in which the LED lamp is located at different light intensity levels; using the membership of the environment in which the LED lamp is located at different light intensity levels, obtaining the target output brightness of the LED lamp; adjusting the output brightness of the LED lamp according to the target output brightness. The present invention can respond to changes in ambient light intensity in real time, and can accurately adjust the brightness of the LED lamp according to changes in ambient light intensity, so as to ensure that the regulated LED lamp can achieve the best lighting effect and energy-saving effect under different environmental conditions.

[0006] Optionally, obtaining the light intensity level parameter of the environment in which the LED lamp is located through the ambient light intensity includes the following steps: obtaining the maximum natural light intensity and the minimum natural light intensity in the environment in which the LED lamp is located; and using the maximum natural light intensity and the minimum natural light intensity to normalize the ambient light intensity to obtain the light intensity level parameter of the environment in which the LED lamp is located. The present invention eliminates the absolute difference of ambient light intensity in different scenes through the normalization of ambient light intensity, which helps to maintain the consistency of the response accuracy of LED lamps under different environmental conditions.

[0007] The light intensity level parameters satisfy the calculation model.

[0008] The step of evaluating the membership of the environment where the LED lamp is located at different light intensity levels based on the light intensity level parameter comprises the following steps:

[0009] Setting the light intensity level according to the maximum and minimum natural light intensity in the environment;

[0010] Based on each light intensity level, a corresponding membership evaluation model is constructed;

[0011] Based on the light intensity level parameters, membership evaluation models at different light intensity levels are used to obtain the membership of the LED lamps at different light intensity levels.

[0012] The light intensity levels include a weak light level, a medium light level, and a strong light level.

[0013] The method of constructing a corresponding membership evaluation model based on each light intensity level comprises the following steps:

[0014] Based on the low-light level, construct a low-light membership evaluation model;

[0015] Based on the medium light level, a medium light membership evaluation model is constructed;

[0016] Based on the glare level, a glare membership evaluation model is constructed.

[0017] The method of obtaining the target output brightness of the LED lamp by utilizing the degree of membership of the environment in which the LED lamp is located at different light intensity levels comprises the following steps:

[0018] Based on the maximum output brightness of the LED lamp, set the brightness control range of the LED lamp at different light intensity levels;

[0019] The target output brightness of the LED lamp is obtained by using the membership degree of the LED lamp's environment at different light intensity levels and the brightness control range.

[0020] The target output brightness of the LED lamp satisfies the calculation model.

[0021] In the second aspect, the LED lamp energy-saving control system provided by the present invention includes an input device, a processor, a memory and an output device, wherein the input device, the processor, the memory and the output device are interconnected, wherein the memory is used to store a computer program, the computer program includes program instructions, and the processor is configured to call the program instructions to execute the LED lamp energy-saving control method provided by the first aspect of the present invention. The LED lamp energy-saving control system provided by the present invention can obtain ambient light intensity data in real time, and can realize highly automated adjustment of LED lamp brightness based on the algorithm preset by the LED lamp energy-saving control method, which not only helps to reduce labor costs, but also helps to reduce the power consumption of the lighting system, extend the service life of lamps, improve energy utilization efficiency, and contribute to the realization of green and sustainable development. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A flow chart of the LED lamp energy-saving control method provided by an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of an LED lamp energy-saving control system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0024] The specific embodiments of the present invention will be described in detail below. It should be noted that the embodiments described herein are only for illustration and are not intended to limit the present invention. In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present invention. However, it is obvious to those of ordinary skill in the art that these specific details do not need to be adopted to implement the present invention. In other examples, in order to avoid confusing the present invention, known circuits, software or methods are not specifically described.

[0025] In one embodiment, see Figure 1 , Figure 1 This is a flow chart of the LED lamp energy saving control method provided by the embodiment of the present invention. Figure 1 As shown, the LED lamp energy-saving control method provided by the embodiment of the present invention includes the following steps:

[0026] S01. Obtain the ambient light intensity of the environment where the LED lamp is located.

[0027] If the LED lamp controlled by this embodiment is a single LED lamp, the ambient light intensity acquired in step S01 is the ambient light intensity of the environment where the LED lamp is located.

[0028] If the LED lamps controlled by this embodiment are multiple LED lamps arranged in different environments, the ambient light intensity acquired in step S01 includes the ambient light intensity corresponding to the multiple LED lamps.

[0029] Furthermore, the ambient light intensity of an environment in which any LED lamp is located can be detected by photoelectric sensors such as photoresistors, photodiodes, phototransistors and photomultiplier tubes.

[0030] S02. Obtain the light intensity level parameter of the environment where the LED lamp is located through the ambient light intensity.

[0031] It can be understood that the light intensity level parameter is a standardized parameter used to characterize the position of the current ambient light intensity within the preset light intensity range, which is specifically a dimensionless value ranging from 0 to 1.

[0032] Furthermore, the step S02 of obtaining the light intensity level parameter of the environment where the LED lamp is located through the ambient light intensity includes the following steps:

[0033] S021. Obtain the maximum natural light intensity and the minimum natural light intensity in the environment where the LED lamp is located.

[0034] If the controlled LED lamp is a single LED lamp, the maximum natural light intensity obtained in step S02 is the historical maximum natural light intensity of the environment where the LED lamp is located; the minimum natural light intensity is the historical minimum natural light intensity of the environment where the LED lamp is located.

[0035] If the controlled LED lamps are multiple LED lamps arranged in different environments:

[0036] When the differences in lighting conditions in different environments are small, the maximum natural light intensity and the minimum natural light intensity of each LED lamp are uniformly set to the historical maximum natural light intensity and the historical minimum natural light intensity in the historical natural light intensity data corresponding to the multiple LED lamps.

[0037] When the lighting conditions in different environments vary greatly, the maximum natural light intensity and the minimum natural light intensity of each LED lamp can be set according to the historical maximum natural light intensity and the historical minimum natural light intensity of its surroundings, respectively.

[0038] S022. Normalize the ambient light intensity by using the maximum natural light intensity and the minimum natural light intensity to obtain a light intensity level parameter of the environment where the LED lamp is located.

[0039] The light intensity level parameters of the environment in which any LED lamp is located satisfy the following calculation model: Among them, e t It represents the light intensity level parameter of the environment where the LED lamp is located at the sampling time t, E t It represents the ambient light intensity of the environment where the LED lamp is located at the sampling time t, Indicates the minimum natural light intensity in the environment where the LED lamp is located. Indicates the maximum natural light intensity in the environment where the LED lamp is located.

[0040] S03. Based on the light intensity level parameters, respectively evaluate the membership of the environment where the LED lamp is located at different light intensity levels.

[0041] It can be understood that the degree of membership at any light intensity level refers to the degree of possibility that the ambient light intensity of the environment in which the LED lamp is located belongs to the corresponding light intensity level, and the specific value is between 0 and 1; specifically, the closer the degree of membership of a light intensity level is to 1, the more the ambient light intensity conforms to the corresponding light intensity level; the closer the degree of membership of a light intensity level is to 0, the less the ambient light intensity conforms to the corresponding light intensity level.

[0042] Furthermore, the step S03 of evaluating the membership of the environment where the LED lamp is located at different light intensity levels based on the light intensity level parameter includes the following steps:

[0043] S031. Set the light intensity level according to the maximum natural light intensity and the minimum natural light intensity in the environment.

[0044] Generally, light intensity levels can be divided according to the needs of specific application scenarios and control requirements.

[0045] In this embodiment, based on the overall range from the minimum natural light intensity to the maximum natural light intensity of the environment in which the LED lamp is located, the light intensity level is specifically divided into a weak light level, a medium light level and a strong light level.

[0046] Furthermore, the light intensity range corresponding to the low light level is The light intensity range corresponding to the medium light level is The light intensity range corresponding to the strong light level is

[0047] in, Indicates the minimum natural light intensity in the environment where the LED lamp is located. Indicates the maximum natural light intensity in the environment where the LED lamp is located, ε1>0, ε2>0, 0<ε1+ε2<1, ε1 represents the first light intensity range parameter, and ε2 represents the second light intensity range parameter.

[0048] Furthermore, the proportion of the light intensity range specifically included in each light intensity level in the overall range can be dynamically adjusted by adjusting the magnitudes of the first light intensity range parameter and the second light intensity range parameter to adapt to different application scenarios and lighting conditions.

[0049] S032. Construct a corresponding membership evaluation model based on each light intensity level.

[0050] In this embodiment, the step S032 of constructing a corresponding membership evaluation model based on each light intensity level includes the following steps:

[0051] S0321. Based on the low-light level, construct a low-light membership evaluation model.

[0052] Furthermore, the low-light membership evaluation model is:

[0053] Among them, μ α (e t ) represents the light intensity level parameter e t The corresponding low-light membership, e t Indicates the light intensity level parameter of the environment where the LED lamp is located at sampling time t, 0 <e H1 <e H2 <1,e H1 represents the first light intensity level parameter threshold, e H2 Indicates the second light intensity level parameter threshold.

[0054] S0322. Based on the medium light level, construct a medium light membership evaluation model.

[0055] Furthermore, the Zhongguang membership evaluation model is:

[0056] Among them, μ β (e t ) represents the light intensity level parameter e t The corresponding medium light membership is 0 <e H1 <e H2 <e H3 <1,e H1 represents the first light intensity level parameter threshold, e H2 Indicates the second light intensity level parameter threshold, e H3 Indicates the third light intensity level parameter threshold.

[0057] S0323. Based on the strong light level, construct a strong light membership evaluation model.

[0058] Furthermore, the strong light membership evaluation model is:

[0059] Among them, μ γ (e t ) represents the light intensity level parameter e t The corresponding strong light membership, et Indicates the light intensity level parameter of the environment where the LED lamp is located at sampling time t, 0 <e H2 <e H3 <1,e H2 Indicates the second light intensity level parameter threshold, e H3 Indicates the third light intensity level parameter threshold.

[0060] It is understandable that the threshold values ​​of the light intensity level parameters in the weak light membership evaluation model, the medium light membership evaluation model, and the strong light membership evaluation model can be dynamically adjusted to adapt to different application scenarios and lighting conditions. S033. Based on the light intensity level parameters, the membership evaluation models at different light intensity levels are used to obtain the membership of the LED lamps at different light intensity levels.

[0061] Furthermore, step S033 converts the light intensity level parameter e obtained in step S01 into t , respectively substitute the weak light membership evaluation model, medium light membership evaluation model and strong light membership evaluation model constructed in step SO32, and then obtain the membership of the environment in which the LED lamp is located at the weak light level, medium light level and strong light level respectively.

[0062] S04. Utilize the membership of the environment in which the LED lamp is located at different light intensity levels to obtain the target output brightness of the LED lamp.

[0063] Furthermore, the step S04 described in which the target output brightness of the LED lamp is obtained by using the membership of the environment in which the LED lamp is located at different light intensity levels includes the following steps:

[0064] S041. Based on the maximum output brightness of the LED lamp, set the brightness control range of the LED lamp at different light intensity levels.

[0065] In this embodiment, the corresponding brightness control ranges are set based on the weak light level, medium light level and strong light level. In one or some other embodiments, the brightness control range of the LED lamp is set according to the different light intensity levels set.

[0066] Furthermore, the brightness control range based on the low light level setting is (σ1I max ,I max ]; The brightness control range based on the medium light level setting is (σ2I max ,σ1I max ]; the brightness control range based on the strong light level setting is [0,σ2I max ].

[0067] Among them, I maxrepresents the maximum output brightness of the LED lamp, 0<σ2<σ1<1, σ1 represents the first brightness control range parameter, and σ2 represents the second brightness control range parameter.

[0068] It is understandable that the brightness control range of the LED lamp at each light intensity level can be dynamically adjusted by adjusting the first brightness control range parameter σ1 and the second brightness control range parameter σ2 to adapt to different application scenarios and lighting conditions.

[0069] S042. Utilize the membership degree of the environment in which the LED lamp is located at different light intensity levels and the brightness control range to obtain the target output brightness of the LED lamp.

[0070] In this embodiment, the target output brightness of the LED lamp satisfies the following calculation model: I(e t )=I max ×μ α (e t )+σ1I max ×μ β (e t )+σ2I max ×μ γ (e t ).

[0071] Among them, I(e t ) represents the light intensity level parameter e t The corresponding target output brightness, μ α (e t ) represents the light intensity level parameter e t The corresponding weak light membership, μ β (e t ) represents the light intensity level parameter e t The corresponding mid-light membership, μ γ (e t ) represents the light intensity level parameter e t The corresponding strong light membership.

[0072] S05. Adjust the output brightness of the LED lamp according to the target output brightness.

[0073] Furthermore, when the target output brightness under the current ambient light condition is obtained, step S05 can further adjust the output brightness of the LED lamp through existing LED brightness adjustment methods such as digital analog light (such as PWM dimming) and analog dimming.

[0074] In one embodiment, see Figure 2 , Figure 2 This is a schematic diagram of the structure of the LED lamp energy-saving control system provided by the embodiment of the present invention. Figure 2As shown, the LED lamp energy-saving control system provided by the embodiment of the present invention includes an input device, a processor, a memory and an output device, wherein the input device, the processor, the memory and the output device are interconnected.

[0075] Furthermore, the input device is used to obtain ambient light intensity data and control instructions input by the user. Specifically, the input device includes a photoelectric sensor of any type among a photoresistor, a photodiode, a phototransistor, and a photomultiplier tube, and the photoelectric sensor is used to obtain ambient light intensity data; the input device also includes a user control panel, and the user control panel is used for the user to manually input control instructions, such as dimming settings, mode selection, etc.

[0076] Furthermore, the processor is used to execute the computer program stored in the memory, process the data obtained by the input device, and generate corresponding control instructions to adjust the output brightness of the LED lamp. Specifically, the processor can be an embedded processor, a general-purpose processor, or other types of processors that can be used to execute the computer program stored in the memory.

[0077] Furthermore, the memory is used to store a computer program, the computer program includes program instructions, and the processor is configured to call the program instructions to execute the above-mentioned LED lamp energy-saving control method. Specifically, the memory can be a magnetic memory, an optical memory, or a semiconductor memory.

[0078] Furthermore, the output device is used to actually adjust the brightness of the LED lamp according to the control instruction generated by the processor. Specifically, the output device includes an LED driver, and the LED driver is used to adjust the current or voltage of the LED lamp according to the PWM signal or analog signal from the processor to achieve brightness control of the LED lamp.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents.

Claims

1. A method for controlling energy saving of LED lamps, characterized in that: The steps include: Get the ambient light intensity of the environment where the LED lamp is located; Obtaining the light intensity level parameter of the environment where the LED lamp is located through the ambient light intensity; Based on the light intensity level parameters, the membership of the environment in which the LED lamp is located at different light intensity levels is evaluated respectively, including: setting the light intensity level according to the maximum natural light intensity and the minimum natural light intensity in the environment; constructing a corresponding membership evaluation model based on each light intensity level; based on the light intensity level parameters, using the membership evaluation models at different light intensity levels to obtain the membership of the LED lamp at different light intensity levels; The target output brightness I(e) of the LED lamp is obtained by using the membership degree of the environment where the LED lamp is located at different light intensity levels. t ): I(e t )=I max ×μ α (And t )+σ1I max ×μ β (And t )+σ2I max ×μ γ (And t ); Among them, I max represents the maximum output brightness of the LED lamp, 0<σ2<σ1<1, σ1 represents the first brightness control range parameter, σ2 represents the second brightness control range parameter, I(e t ) represents the light intensity level parameter e t The corresponding target output brightness, μ α (e t ) represents the light intensity level parameter e t The corresponding weak light membership, μ β (e t ) represents the light intensity level parameter e t The corresponding mid-light membership, μ γ (e t ) represents the light intensity level parameter e t The corresponding strong light membership; According to the target output brightness, the output brightness of the LED lamp is adjusted.

2. The LED lamp energy-saving control method according to claim 1, characterized in that: The step of obtaining the light intensity level parameter of the environment where the LED lamp is located by using the ambient light intensity comprises the following steps: Get the maximum and minimum natural light intensity in the environment where the LED lamp is located; The maximum natural light intensity and the minimum natural light intensity are used to normalize the ambient light intensity, thereby obtaining a light intensity level parameter of the environment in which the LED lamp is located.

3. The LED lamp energy-saving control method according to claim 2, characterized in that: The light intensity level parameters satisfy the calculation model.

4. The LED lamp energy-saving control method according to claim 1, characterized in that: The light intensity levels include a weak light level, a medium light level, and a strong light level.

5. The LED lamp energy-saving control method according to claim 4, characterized in that: The method of constructing a corresponding membership evaluation model based on each light intensity level comprises the following steps: Based on the low-light level, construct a low-light membership evaluation model; Based on the medium light level, a medium light membership evaluation model is constructed; Based on the glare level, a glare membership evaluation model is constructed.

6. The LED lamp energy-saving control method according to claim 1, characterized in that: The method of obtaining the target output brightness of the LED lamp by utilizing the degree of membership of the environment in which the LED lamp is located at different light intensity levels comprises the following steps: Based on the maximum output brightness of the LED lamp, set the brightness control range of the LED lamp at different light intensity levels; The target output brightness of the LED lamp is obtained by using the membership degree of the LED lamp's environment at different light intensity levels and the brightness control range.

7. The LED lamp energy-saving control method according to claim 6, characterized in that: The target output brightness of the LED lamp satisfies the calculation model.

8. An LED lamp energy-saving control system, characterized in that: The method comprises an input device, a processor, a memory and an output device, wherein the input device, the processor, the memory and the output device are interconnected, wherein the memory is used to store a computer program, the computer program comprises program instructions, and the processor is configured to call the program instructions to execute the energy-saving control method for LED lamps as described in any one of claims 1 to 7.

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