Energy consumption control method and system for display lamp

Abstract

The embodiment of the invention provides an energy consumption control method and system of a display lamp, and relates to the field of energy consumption control of display lamps. The method comprises the following steps: modulating light emitted by the display lamp to enable the light to carry an exclusive identification signal with a preset frequency; receiving light is obtained, and the intensity of the receiving light and the intensity of the exclusive identification signal are extracted from the receiving light; obtaining the external environment light intensity according to the intensity of the exclusive identification signal; and adjusting the brightness of the display lamp according to the external environment light intensity and the human body induction information. According to the energy consumption control method and system for the display lamp provided by the invention, the control accuracy of the display lamp can be improved, so that energy conservation is realized to the greatest extent.

Description

A method and system for controlling the energy consumption of display lights Technical Field

[0001] This application relates to the field of energy consumption control for display lights, and more specifically, to a method and system for energy consumption control of display lights. Background Technology

[0002] In professional environments such as modern commercial displays, museum exhibitions, and art galleries, energy-efficient display lights are widely used due to their high efficiency, long lifespan, and controllability. These lights typically incorporate energy control methods designed to balance energy efficiency with display effectiveness. For example, some energy-efficient display lights utilize ambient light sensors to automatically adjust the light output power based on the intensity of external ambient light, achieving energy savings. However, in specific application scenarios, existing energy control methods may face unexpected challenges, leading to conflicts between their energy-saving logic and actual display needs. For instance, energy-efficient display lights may be specifically used to illuminate exhibits with highly reflective properties, such as finely polished metal artifacts like antique silverware, modern chrome-plated sculptures, or high-gloss lacquerware. These exhibits, due to their materials and surface treatments, efficiently reflect incident light through specular reflection, creating bright spots and highlights—a crucial component of their visual appeal. To properly protect these valuable or fragile exhibits, they are typically placed in a specially designed, sealed display case. These display cases typically feature a transparent glass front panel, providing not only a physical barrier but also allowing visitors a clear view of the exhibits. To further enhance the visual presentation, the interior background panel is often decorated with light-colored diffused materials. For example, a matte coating in white, beige, or light gray, or appropriate fabrics, might be used. This design choice aims to provide a soft, uniform background, allowing the exhibits to "stand out" from the background, clearly showcasing their outlines and details, while avoiding distracting reflections or shadows. When light shines on this diffused background, it is evenly scattered in all directions, creating a soft and bright environment that helps eliminate hard shadows around the exhibits and enhances overall visual comfort. When someone visits, the built-in infrared motion sensor in the lighting fixture is triggered. This sensor is designed to automatically increase the brightness of the lights based on preset intelligent logic when someone approaches, providing the best viewing experience and allowing the details and textures of the exhibits to be fully displayed in ample light. However, this very act of increasing brightness, intended to enhance the viewing experience, triggered a series of chain reactions under specific physical conditions. As the light intensity was programmed to increase, stronger light shone onto the highly polished metal exhibits. Due to the mirror-like properties of the exhibits' surfaces, a large amount of light was efficiently reflected. These reflected rays were not randomly scattered but concentrated onto a light-colored diffuse background panel inside the display case. Upon receiving this high-intensity reflected light, the background panel diffused it extensively, creating an exceptionally bright and well-lit environment throughout the entire display case, including the space surrounding the exhibits. This enhancement of internal lighting is a direct physical result of the interaction between the lighting itself and the exhibits and display case structure.

[0003] The sensor's built-in raw data processing unit, lacking the ability to identify specific reflection paths and light sources, may incorrectly interpret the signal of a sharp increase in reflected light caused by the amplification of the light itself as a sudden increase in ambient light intensity. For example, the sensor might misjudge this internal reflected light intensity as equivalent to daytime window lighting or strong indoor illumination. The consequence of this misjudgment is that the energy-saving control method, based on its preset energy-saving logic of "reducing light output power when ambient light is bright enough," makes an incorrect judgment at the crucial moment when brightness is most needed to ensure viewing quality (i.e., when visitors are viewing closely), forcibly reducing the light brightness. This results in the exhibit details appearing dim and unclear to visitors, their exquisite textures, colors, and luster failing to be fully displayed, severely impacting the viewing experience. Summary of the Invention

[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes an energy consumption control method and system for display lights, aiming to improve the accuracy of display light control and thereby maximize energy savings.

[0005] In a first aspect, an embodiment of this application provides an energy consumption control method for a display lamp, comprising: modulating the light emitted by the display lamp to make the light carry a unique identifier signal of a preset frequency; acquiring the received light and extracting the intensity of the received light and the intensity of the unique identifier signal from the received light; obtaining the ambient light intensity based on the intensity of the unique identifier signal; and adjusting the brightness of the display lamp based on the ambient light intensity and human body sensing information.

[0006] According to some embodiments of this application, the step of modulating the light emitted by the display lamp to make the light carry a unique identification signal of a preset frequency includes: acquiring background light environment information inside the display case; adjusting the modulation parameters of the unique identification signal according to the background light environment information, the modulation parameters including the frequency and / or amplitude of the unique identification signal; and modulating the emitted light with the adjusted modulation parameters to make the emitted light carry the unique identification signal, ensuring that there is a preset signal-to-noise ratio between the intensity of the unique identification signal and the interference signal intensity of the information in the background light environment.

[0007] According to some embodiments of this application, the step of obtaining the external ambient light intensity based on the intensity of the exclusive identification signal includes: modulating the light emitted by the display lamp so that the light carries the exclusive identification signal and a detection signal, and extracting the fluctuation component synchronized with the detection signal; calculating the proportionality coefficient between the internal reflected light intensity and the intensity of the exclusive identification signal based on the synchronized fluctuation component; calculating the internal reflected light amount based on the proportionality coefficient and the intensity of the exclusive identification signal; and obtaining the external ambient light intensity based on the internal reflected light amount.

[0008] According to some embodiments of this application, the step of extracting the fluctuation component synchronized with the detection signal includes: performing spectral analysis on the received light to identify interference signals in the background light environment information; adjusting the reference frequency and / or phase of the detection signal according to the frequency and intensity of the interference signal; adjusting the gain of the light receiving unit according to the received light; and extracting the fluctuation component synchronized with the detection signal according to the adjusted reference frequency and / or phase of the detection signal and the adjusted gain of the light receiving unit.

[0009] According to some embodiments of this application, the step of adjusting the gain of the light receiving unit based on the received light includes: identifying an instantaneous change in the intensity of the received light based on the received light; and adjusting the gain of the light receiving unit based on the magnitude of the instantaneous change in the intensity of the received light.

[0010] According to some embodiments of this application, the step of identifying the instantaneous change in the intensity of the received light based on the received light includes: performing spectral analysis on the received light to identify interference signals in the background light environment; adjusting the identification threshold and / or parameters of the identification algorithm for the instantaneous change based on the frequency and amplitude of the interference signals; and identifying the instantaneous change in the intensity of the received light based on the adjusted identification threshold and / or parameters of the identification algorithm.

[0011] According to some embodiments of this application, when there are differences in the instantaneous drastic changes in the intensity of light in different areas of the display case, the step of adjusting the gain of the light receiving unit based on the instantaneous change in the intensity of the received light includes: receiving the light intensity of each area of ​​multiple light receiving units and identifying the instantaneous drastic changes in the light intensity of each area, wherein the multiple light receiving units are located in different areas inside the display case; determining the gain adjustment requirements for each area based on the instantaneous drastic changes in the light intensity of each area; and independently adjusting the gain of the multiple light receiving units based on the gain adjustment requirements for each area.

[0012] According to some embodiments of this application, the step of determining the gain adjustment requirements of each region based on the instantaneous drastic change in light intensity in each region includes: within a preset time interval, causing the display lamp to emit calibration light of known intensity; the plurality of light receiving units respectively receiving the calibration light and recording the intensity of the calibration light received by each unit; determining the sensitivity attenuation coefficient of each of the plurality of light receiving units based on the difference between the calibration light intensity and the known intensity calibration light; correcting the instantaneous drastic change in light intensity in each region based on the sensitivity attenuation coefficient to obtain the corrected instantaneous drastic change amplitude; and determining the gain adjustment requirements of each region based on the corrected instantaneous drastic change amplitude.

[0013] According to some embodiments of this application, the step of determining the sensitivity attenuation coefficient of each of the plurality of light receiving units based on the difference between the calibration light intensity and the known intensity of calibration light includes: obtaining a preset calibration light intensity of different calibration light emitting units; receiving calibration light from different calibration light emitting units from the plurality of light receiving units to obtain the calibration light intensity; and determining the sensitivity attenuation coefficient of each of the plurality of light receiving units based on the difference between the calibration light intensity and the known calibration light intensity, and the spatial positional relationship between the calibration light emitting unit and the light receiving unit.

[0014] Secondly, embodiments of this application provide an energy consumption control system for a display lamp. The system includes: a modulation module for modulating the light emitted by the display lamp to carry a unique identifier signal of a preset frequency; a receiving module for acquiring the received light and extracting the intensity of the received light and the intensity of the unique identifier signal from the received light; a calculation and separation module for calculating the amount of internally reflected light in the light based on the intensity information of the unique identifier signal, and separating the amount of internally reflected light from the total light intensity of the light to obtain the external ambient light intensity; and an adjustment module for adjusting the brightness of the display lamp based on the external ambient light intensity and human body sensing information. According to the technical solution of this application embodiment, at least the following beneficial effects are achieved: The energy consumption control method for display lamps disclosed in this application modulates the light emitted by the display lamp to carry a unique identifier signal of a preset frequency, and uses the intensity of this signal to accurately acquire the external ambient light intensity. Combined with human body sensing information, it realizes intelligent adjustment of the brightness of the display lamp. This method effectively solves the challenge that energy-saving display lamps may face in specific application scenarios in the prior art, namely, the conflict between energy-saving logic and actual display needs. By introducing a dedicated identification signal, this application can effectively distinguish the light emitted by the display lights themselves from external ambient light, avoiding the inaccurate measurement problems caused by internal reflected light interference in the complex lighting environment inside the display case, which is a problem with traditional ambient light sensors. Furthermore, by combining human body sensing information, the system can dynamically adjust the light brightness according to actual foot traffic and display needs, maximizing energy savings while ensuring display effectiveness, thus achieving a significant and excellent balance between energy efficiency and display effect.

[0015] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0016] The accompanying drawings are used to provide a further understanding of the technical solutions of this application and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of this application and do not constitute a limitation on the technical solutions of this application.

[0017] Figure 1 is a flowchart illustrating an energy consumption control method for a display lamp according to an embodiment of this application; Figure 2 is a schematic diagram illustrating an energy consumption control system for a display lamp according to an embodiment of this application.

[0018] Figure descriptions: 1000, Energy consumption control system for display lights; 1010, Modulation module; 1020, Receiving module; 1030, Calculation and separation module; 1040, Adjustment module. Detailed Implementation

[0019] To make the objectives, technical methods, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0020] Based on the above, this application proposes an energy consumption control method and system for display lights, aiming to improve the accuracy of display light control and thus maximize energy saving.

[0021] Referring to Figure 1, Figure 1 is a flowchart illustrating an energy consumption control method for display lights according to an embodiment of this application. This embodiment includes, but is not limited to, steps S110 to S140, which will be described in detail below.

[0022] Step S110: Modulate the light emitted by the display lamp so that the light carries a unique identifier signal of a preset frequency; Step S120: Acquire the received light and extract the intensity of the received light and the intensity of the unique identifier signal from the received light; Step S130: Obtain the ambient light intensity based on the intensity of the unique identifier signal; Step S140: Adjust the brightness of the display lamp based on the ambient light intensity and human body sensing information.

[0023] It should be noted that "display lights" refer to lighting fixtures used to illuminate exhibits, artworks, or merchandise to enhance their visual appeal, such as spotlights, downlights, and track lights. These display lights typically have adjustable brightness. "Specific identification signal" refers to a light signal of a preset frequency, generated by modulating the light emitted by the display lights. Its function is to be identifiable and extracted at the receiving end, thus distinguishing it from other light in the environment. "Received light" refers to the total light received by a light receiving unit (such as a photodiode, photoresistor, or CMOS / CCD sensor), which includes the light emitted by the display lights, external ambient light, and any possible internal reflections. "Human body sensing information" refers to information about the presence of human beings near the display case obtained through human body sensing sensors (such as infrared sensors, microwave sensors, or image recognition systems).

[0024] Specifically, the energy consumption control method for the display lamp of this application is based on modulating the light emitted by the display lamp to carry a unique identification signal of a preset frequency. For example, this can be achieved by integrating a modulator into the drive circuit of the display lamp. This modulator can be a simple oscillation circuit that periodically modulates the current of the LED beads at a preset frequency (e.g., a specific high frequency invisible to the human eye), thereby producing minute, imperceptible fluctuations in the brightness of the emitted light. These fluctuations carry the unique identification signal. Another implementation method is to place an adjustable grating or liquid crystal shutter in front of the light source of the display lamp, and modulate the light by controlling the periodic changes in its transmittance to carry the unique identification signal.

[0025] Next, it is necessary to acquire the received light and extract its intensity and the intensity of the unique identification signal from it. For example, a light receiving unit, such as a photodiode, can be used to convert the received light signal into an electrical signal. This electrical signal is then fed into a signal processing unit, which may include a bandpass filter to filter out noise at other frequencies, retaining only the unique identification signal component at a preset frequency. By demodulating and amplifying the filtered signal, the intensity of the unique identification signal can be obtained. Simultaneously, by integrating or averaging the original electrical signal, the total intensity of the received light can be obtained.

[0026] Furthermore, the intensity of the ambient light can be obtained based on the strength of the unique identifier signal. For example, since the unique identifier signal is emitted by the display light, it is affected by the superposition of ambient light during propagation. By analyzing the intensity of the received unique identifier signal and combining it with the emission characteristics of the display light itself (e.g., its emission intensity when there is no ambient light interference), the attenuation or enhancement effect of ambient light on the signal can be calculated, thereby indirectly calculating the intensity of the ambient light. Specifically, a model can be pre-established that describes the intensity variation of the unique identifier signal at the receiving end under different ambient light intensities. In practical applications, the corresponding ambient light intensity can be deduced from the currently received unique identifier signal intensity through table lookup or real-time calculation.

[0027] Finally, the brightness of the display lights is adjusted based on the ambient light intensity and human presence information. For example, when the ambient light intensity is high, the brightness of the display lights can be appropriately reduced to avoid over-illumination and energy waste. Conversely, when the ambient light intensity is low, the brightness of the display lights can be increased to ensure that the exhibits are clearly visible. Simultaneously, human presence information also serves as an important adjustment basis. When the human presence sensor detects the presence of a person near the display case, even if the ambient light intensity is high, the brightness of the display lights can be appropriately increased to provide a better display effect; conversely, when no one is present for an extended period, the display lights can be reduced or even turned off to achieve maximum energy savings. This adjustment can be achieved by sending control signals to the display light's drive circuit, for example, by using PWM (Pulse Width Modulation) technology to control the average current of the LED beads, thereby changing their brightness.

[0028] This application presents an energy consumption control method for display lights, aiming to address the challenge of balancing energy saving and display effect in complex lighting environments using traditional energy consumption control methods. This application effectively separates the intensity of external ambient light by introducing a unique identifier signal and precisely extracting its intensity from the received light. This method avoids the simple measurement of total light intensity by traditional sensors and solves the interference of internal reflected light and the light emitted by the display lights themselves on the assessment of external ambient light. For example, inside a display case, the surface of exhibits or the inner wall of the case may reflect light emitted by the display lights, which is superimposed on the total light received by the light receiving unit. Traditional methods cannot distinguish between this reflected light and external ambient light, leading to inaccurate assessments of external ambient light. This application modulates the light emitted by the display lights to carry a unique identifier signal and assesses external ambient light solely based on the intensity of this unique identifier signal, effectively eliminating the influence of internal reflected light and making the assessment of external ambient light more accurate.

[0029] In one embodiment of this application, regarding the above step S110 of acquiring the received light and extracting the intensity of the received light and the intensity of the unique identification signal from the received light, including but not limited to steps S210 to S230, each step will be described in turn below.

[0030] Step S210: Obtain background light environment information inside the display case; Step S220: Adjust the modulation parameters of the exclusive identification signal according to the background light environment information, the modulation parameters including the frequency and / or amplitude of the exclusive identification signal; Step S230: Modulate the emitted light through the adjusted modulation parameters so that the emitted light carries the exclusive identification signal, ensuring that there is a preset signal-to-noise ratio between the intensity of the exclusive identification signal and the intensity of the interference signal in the background light environment information.

[0031] Specifically, acquiring background light environment information inside the display case refers to detecting the lighting conditions inside the display case in real time or periodically using light sensors or other environmental sensing devices. This includes, but is not limited to, the intensity and spectral distribution of ambient light, as well as the frequency and amplitude of any periodic or non-periodic interference signals. The purpose is to provide a basis for subsequent modulation parameter adjustments. Adjusting the modulation parameters of the dedicated identification signal, including its frequency and / or amplitude, can be understood as dynamically selecting or modifying the carrier frequency and / or signal amplitude of the dedicated identification signal based on the acquired background light environment information. For example, when there is strong interference of a specific frequency in the background light environment, the frequency of the dedicated identification signal can be adjusted to a frequency band far from the interference frequency to avoid the signal being submerged; or, when the background light intensity is high, the amplitude of the dedicated identification signal can be appropriately increased to improve its detectability in the environment. The aim is to optimize the transmission performance of the dedicated identification signal, ensuring it remains clearly identifiable even in complex environments. In practical applications, ensuring a preset signal-to-noise ratio (SNR) between the strength of the unique identification signal and the strength of interference signals in the background light environment means adjusting the modulation parameters mentioned above so that when the unique identification signal is detected at the receiving end, the ratio of its effective signal power to the background noise power reaches or exceeds a preset threshold. For example, the SNR can be set to be no less than 10dB to ensure reliable signal extraction. The purpose is to ensure that the unique identification signal is not severely interfered with by background noise during transmission, thereby guaranteeing the accuracy and stability of subsequent signal extraction.

[0032] In some preferred embodiments, a specific example is given below. Suppose that the light emitted by the display lights in a showcase needs to carry a unique identification signal. First, a light sensor installed inside the showcase monitors the background light environment in real time. If interference from 50Hz AC fluorescent lamps is detected in the background light, and its intensity is high, the system adjusts the modulation frequency of the unique identification signal to a frequency band far from 50Hz, for example, setting it to 100Hz or higher, based on this background light environment information. Simultaneously, the amplitude of the unique identification signal is appropriately increased according to the background light intensity. Through these adjusted modulation parameters, the light emitted by the display lights is modulated, ensuring that the signal-to-noise ratio of the unique identification signal reaches a preset 15dB when detected at the receiving end. Therefore, even in a background light environment with strong interference, the unique identification signal can be clearly identified and extracted, thus ensuring the accuracy of subsequent energy consumption control.

[0033] Through the above technical solution, this application can effectively cope with the complexity and dynamic changes of the background light environment inside the display case, significantly improving the transmission reliability and detectability of the exclusive identification signal in the interference environment. Compared with modulation methods that do not consider the background light environment, this solution ensures that there is a preset signal-to-noise ratio between the strength of the exclusive identification signal and the strength of the interference signal in the background light environment, thereby avoiding measurement errors caused by signal submersion or interference, thus ensuring the accuracy of the acquisition of the external ambient light intensity, and ultimately making the brightness adjustment of the display lights more precise and energy-efficient.

[0034] In one embodiment of this application, the determination of the external ambient light intensity based on the intensity of the exclusive identification signal in step S130 includes, but is not limited to, steps S310 to S350. Each step will be described in turn below.

[0035] Step S310, obtaining the external ambient light intensity based on the intensity of the exclusive identification signal, includes: Step S320, modulating the light emitted by the display lamp to carry the exclusive identification signal and the detection signal, and extracting the wave component synchronized with the detection signal; Step S330, calculating the ratio coefficient between the internal reflected light intensity and the intensity of the exclusive identification signal based on the synchronized wave component; Step S340, calculating the internal reflected light amount based on the ratio coefficient and the intensity of the exclusive identification signal; Step S350, obtaining the external ambient light intensity based on the internal reflected light amount.

[0036] Specifically, when modulating the light emitted by the display lamps, in addition to carrying a unique identifier signal with a preset frequency, the light also carries a detection signal. This detection signal can be a signal with a different frequency, modulation method, or timing than the identifier signal. Its purpose is to independently identify and quantify the light emitted by the display lamps themselves and reflected inside the display case. For example, the identifier signal can be used to carry information needed for brightness adjustment, while the detection signal is specifically used to detect internal reflected light.

[0037] After acquiring the received light, the intensity of the unique identifier signal needs to be extracted from it, consistent with the basic solution. Simultaneously, it's necessary to further extract the wave components synchronized with the detection signal. This can be understood as using specific signal processing techniques, such as filtering, demodulation, or correlation analysis, to separate the components in the received light that match the frequency, phase, or timing characteristics of the detection signal. These synchronized wave components represent the portion of the detection signal emitted by the display light that is received after reflection inside the display case, and therefore can be used to characterize the intensity of the internally reflected light.

[0038] In practical applications, after extracting the wave components synchronized with the detection signal, the proportionality coefficient between the internal reflected light intensity and the intensity of the unique identifier signal can be calculated based on these wave components. This proportionality coefficient reflects the degree of internal reflection of the light emitted by the display lamp under a specific display case structure and material. For example, the relationship between the synchronized wave components of the detection signal and the actual internal reflected light intensity can be established through pre-calibration or real-time measurement, and the proportional relationship between the internal reflected light intensity and the intensity of the unique identifier signal can be further derived.

[0039] Therefore, once this proportionality coefficient is obtained, combined with the currently measured intensity of the unique identification signal, the current internal reflected light amount can be accurately calculated. Internal reflected light amount refers to the amount of light emitted by the display lamp itself, reflected inside the display case, and then received by the light receiving unit. In this way, the portion of the total received light reflected by the display lamp itself can be quantified.

[0040] Ultimately, by subtracting or compensating for the calculated amount of internally reflected light from the total received light intensity, a more accurate external ambient light intensity can be obtained. This means that the system can effectively distinguish between light from the external environment and light reflected from the display lamp itself, thus avoiding interference from internally reflected light in the determination of the external ambient light intensity.

[0041] In some preferred embodiments, a specific example is illustrated below. Assume a display case contains a display light configured to simultaneously emit light carrying a unique identification signal (e.g., modulated at a 10 kHz frequency) and light carrying a detection signal (e.g., modulated at a 20 kHz frequency). When a light receiving unit receives the light from inside the display case, it performs signal processing. First, the light receiving unit extracts the signal strength at the 10 kHz frequency as the strength of the unique identification signal. Simultaneously, it performs spectral analysis or synchronous demodulation on the received light to identify and extract the fluctuation components synchronized with the 20 kHz detection signal. These fluctuation components represent the amount of light received after the detection signal emitted by the display light is reflected inside the display case.

[0042] During system initialization or periodic calibration, the display light can emit only a detection signal under a known ambient light intensity (e.g., complete darkness). In this case, the synchronization fluctuation component measured by the light receiving unit can be used to establish the relationship between the detection signal fluctuation component and the amount of internal reflected light. Alternatively, during normal operation, the system can calculate the ratio between the internal reflected light intensity and the intensity of the unique identifier signal based on the synchronization fluctuation component of the detection signal and a pre-defined display case optical characteristic model. For example, if the intensity of the synchronization fluctuation component of the detection signal is X, the intensity of the unique identifier signal is Y, and it is known that under the current display case environment, there is a fixed ratio K between the reflection characteristics of the detection signal and the reflection characteristics of the unique identifier signal, then the amount of internal reflected light can be calculated as K * Y.

[0043] Once the internal reflected light intensity is calculated, the system can subtract this amount from the total received light intensity to obtain a more accurate external ambient light intensity. For example, if the total received light intensity is Z and the calculated internal reflected light intensity is L, then the true external ambient light intensity is Z - L. Based on this more precise ambient light intensity, combined with human body sensing information, the brightness of the display lights can be adjusted more rationally, thereby achieving better energy consumption control and display effects.

[0044] The above technical solution significantly improves the accuracy of measuring external ambient light intensity, avoiding misjudgments caused by interference from internal reflected light. This precise ambient light intensity information enables more intelligent and refined brightness adjustment of the display lights, better adapting to actual external lighting conditions, thereby effectively reducing unnecessary energy consumption while ensuring display effects. Furthermore, this solution enhances the system's adaptability to different display case structures and materials, improving overall robustness.

[0045] In some embodiments of this application, the step of extracting the wave component synchronized with the detection signal in step S320 above includes, but is not limited to, steps S410 to S440, which will be described in turn below.

[0046] Step S410: Perform spectrum analysis on the received light to identify interference signals in the background light environment information; Step S420: Adjust the reference frequency and / or phase of the detection signal according to the frequency and intensity of the interference signal; Step S430: Adjust the gain of the light receiving unit according to the received light; Step S440: Extract the wave component synchronized with the detection signal according to the adjusted reference frequency and / or phase of the detection signal and the adjusted gain of the light receiving unit.

[0047] Specifically, spectral analysis of the received light is performed to identify various interference signals that may exist in the background lighting environment. These interference signals may originate from other light sources outside the display case, such as fluorescent lights, LED lights, or natural light, and their frequency and intensity may vary over time. Spectral analysis allows for the precise acquisition of the frequency and intensity information of these interference signals, providing a basis for subsequent signal processing. Based on the identified frequency and intensity of the interference signals, the reference frequency and / or phase of the detection signal can be adjusted. This adjustment aims to better distinguish the detection signal from the interference signal at the receiving end, or to effectively suppress interference through methods such as phase cancellation. For example, if a strong interference signal at a certain frequency is detected, the reference frequency of the detection signal can be adjusted to a frequency band far from the interference frequency, or its phase can be adjusted to avoid superposition with the interference signal. Simultaneously, the gain of the light receiving unit can be adjusted based on the overall intensity of the received light or its instantaneous changes. Gain adjustment of the light receiving unit ensures that the received signal intensity remains within the optimal operating range under different lighting conditions, avoiding signal oversaturation or weakness, thereby guaranteeing effective signal acquisition. For example, when the received light intensity is high, the gain can be reduced to prevent saturation; when the received light intensity is low, the gain can be increased to enhance the signal. Thus, with the combined effect of the adjusted reference frequency and / or phase of the detection signal and the adjusted gain of the light receiving unit, the wave component synchronized with the detection signal can be extracted from the received light more accurately and robustly.

[0048] Through the above technical solution, this application can significantly improve the ability to accurately extract the wave component synchronized with the detection signal from the received light under complex and variable external lighting conditions. This overcomes the limitation of traditional methods in terms of insufficient accuracy in extracting the synchronized wave component when there is strong interference or drastic changes in light intensity. Therefore, it is possible to calculate the amount of internal reflected light more accurately, and thus obtain the external ambient light intensity more precisely. This provides more reliable and refined data support for the energy consumption control of display lights, ultimately achieving more efficient and intelligent brightness adjustment of display lights, and further optimizing energy management.

[0049] In some embodiments of this application, the step of adjusting the gain of the light receiving unit according to the received light in step S430 includes, but is not limited to, steps S510 to S520. Each step will be described in turn below.

[0050] Step S510: Identify the instantaneous change in the intensity of the received light based on the received light intensity; Step S520: Adjust the gain of the light receiving unit based on the magnitude of the instantaneous change in the intensity of the received light intensity.

[0051] Specifically, identifying instantaneous changes in received light intensity refers to real-time monitoring and analysis of the light signal received by the light receiving unit to detect significant brightness fluctuations occurring within a short period. Such instantaneous changes may be caused by sudden light sources in the external environment (such as camera flashes), fast-moving objects, or brief obstructions from inside a display case. The purpose is to promptly capture interference events that may affect signal extraction accuracy. Adjusting the gain of the light receiving unit based on the amplitude of the instantaneous change in received light intensity can be understood as the system dynamically adjusting the amplification factor of the light receiving unit based on the severity (amplitude) of the instantaneous change once it is detected. For example, if the instantaneous change is large, a larger gain adjustment may be needed to avoid signal saturation or distortion; if the amplitude is small, fine-tuning is performed to maintain the effective range of the signal. The aim is to ensure that the light receiving unit always operates in the optimal linear response region under dynamic lighting conditions, avoiding signal overload or underload, thereby ensuring the accuracy of subsequent signal processing.

[0052] Through the above technical solution, this application can significantly improve the adaptability and accuracy of the display lamp energy consumption control system in complex and variable lighting environments. Especially in scenarios with instantaneous strong light interference or rapid changes in lighting, the gain of the light receiving unit can be adjusted quickly and accurately, effectively avoiding signal saturation or signal loss. This enables the system to extract the synchronous fluctuation components of the detection signal more stably and reliably, thereby improving the calculation accuracy of internal reflected light and external ambient light intensity, ultimately achieving more precise brightness adjustment and energy consumption optimization of the display lamp.

[0053] In some embodiments of this application, the step S510 above, which identifies the instantaneous change in the intensity of the received light based on the received light, includes, but is not limited to, steps S610 to S630. Each step will be described in turn below.

[0054] Step S610: Perform spectrum analysis on the received light to identify interference signals in the background light environment; Step S620: Adjust the instantaneous change identification threshold and / or the parameters of the identification algorithm according to the frequency and amplitude of the interference signal; Step S630: Identify the instantaneous change in the intensity of the received light according to the adjusted instantaneous change identification threshold and / or the parameters of the identification algorithm.

[0055] The purpose of spectral analysis of the received light is to analyze the various frequency components contained in the received light, thereby accurately identifying interference signals present in the background lighting environment. These interference signals may originate from other light sources in the environment, such as fluorescent lamps and LED lights. They typically modulate the light with specific frequencies and amplitudes, thus affecting the normal operation of the display light's energy consumption control system. Through spectral analysis, these interference signals can be effectively distinguished from the unique identification signals and detection signals emitted by the display light.

[0056] Furthermore, after identifying the frequency and amplitude of the interference signal, the identification threshold for instantaneous changes and / or the parameters of the identification algorithm can be dynamically adjusted based on this information. For example, if a strong interference signal at a specific frequency is detected, the identification threshold for instantaneous changes related to that frequency can be increased, or the filtering parameters of the identification algorithm can be adjusted to reduce the false identification rate. The purpose of this adjustment is to ensure that, even in complex background lighting environments, the system can still accurately identify genuine instantaneous changes caused by changes in the display light itself or the external environment, rather than pseudo-instantaneous changes caused by interference signals.

[0057] Therefore, by adjusting the threshold for recognizing instantaneous changes and / or the parameters of the recognition algorithm, the instantaneous changes in the intensity of the received light can be identified more accurately. This means that the system can more reliably determine the true fluctuations in light intensity, such as instantaneous changes caused by factors like human movement, object obstruction, or changes in the brightness of the display lights themselves, thus providing an accurate basis for subsequent gain adjustments of the light receiving unit.

[0058] Through the above technical solution, the energy consumption control method for display lights can effectively avoid the influence of interference signals in the background light environment when identifying instantaneous changes in the intensity of received light. This makes the identification of instantaneous changes more accurate and reliable, thus providing a more accurate basis for adjusting the gain of the light receiving unit. As a result, the gain of the light receiving unit can be adjusted more finely, further optimizing the system's response to changes in the intensity of external ambient light, ultimately achieving more precise and efficient energy consumption control of the display lights, and improving the overall performance and stability of the system.

[0059] In some embodiments of this application, when the instantaneous drastic change amplitude of different areas of the display cabinet is different, the step of adjusting the gain of the light receiving unit according to the instantaneous change amplitude of the received light intensity in step S520 includes, but is not limited to, steps S710 to S730. Each step will be described in turn below.

[0060] Step S710: Receive the light intensity of each area of ​​the multiple light receiving units and identify the instantaneous drastic changes in the light intensity of each area, wherein the multiple light receiving units are located in different areas inside the display case; Step S720: Determine the gain adjustment requirements of each area based on the instantaneous drastic changes in the light intensity of each area; Step S730: Adjust the gain of the multiple light receiving units independently based on the gain adjustment requirements of each area.

[0061] Specifically, multiple light receiving units can be understood as sensors or photodetectors distributed in different locations inside the display case. These could include photoresistors, photodiodes, or CCD / CMOS image sensors, and their purpose is to independently sense and measure the light intensity of their respective areas. By receiving the light intensity of each area from these light receiving units, real-time illumination information for different local areas inside the display case can be obtained. Furthermore, identifying instantaneous and drastic changes in light intensity in each area refers to real-time monitoring and analysis of the light intensity data received by each light receiving unit to detect rapid and significant fluctuations in light intensity. Such fluctuations may be caused by changes in ambient light, movement of objects inside the display case, or human activity. Therefore, determining the gain adjustment requirements for each area based on the magnitude of the instantaneous and drastic changes in light intensity means assessing the degree of gain adjustment required for the light receiving units in that area based on the degree of instantaneous and drastic change detected in each area. For example, if the light intensity change in a certain area is drastic and significant, a larger gain adjustment may be needed to accommodate this change. Ultimately, based on the gain adjustment requirements of each region, the gain of multiple light receiving units is adjusted independently. This means that the gain of each light receiving unit is no longer adjusted uniformly, but rather individually and locally according to the actual illumination changes in its region. For example, the gain of one region may be increased to capture weak signals, while the gain of another region may be decreased to avoid signal saturation.

[0062] Through the above technical solution, this application can significantly improve the accuracy and adaptability of display lamp energy consumption control. Compared with solutions that only adjust the gain of the entire system or a single area, this application can effectively address the local non-uniformity and dynamic changes of the lighting environment inside the display case, ensuring accurate acquisition of light intensity information in different areas. Therefore, the external ambient light intensity can be calculated more accurately, and the brightness of the display lamps can be finely adjusted accordingly, avoiding measurement errors caused by improper gain. This further optimizes the energy consumption management of the display lamps, improves energy utilization efficiency, and ensures the stability and consistency of the display effect.

[0063] In some embodiments of this application, the above step S720 determines the gain adjustment requirements of each region based on the instantaneous and drastic change in the light intensity of each region, including but not limited to steps S810 to S820. Each step will be described in turn below.

[0064] Step S810: Within a preset time interval, the display lamp emits calibration light of known intensity; Step S820: Multiple light receiving units receive the calibration light respectively and record the intensity of the calibration light received by each unit; Step S830: Based on the difference between the calibration light intensity and the known intensity calibration light, determine the sensitivity attenuation coefficient of each of the multiple light receiving units; Step S840: Based on the sensitivity attenuation coefficient, correct the instantaneous drastic change amplitude of the light intensity in each area to obtain the corrected instantaneous drastic change amplitude; Step S850: Based on the corrected instantaneous drastic change amplitude, determine the gain adjustment requirements for each area.

[0065] Specifically, within a preset time interval, such as every certain period (daily, weekly, or monthly) or when triggered by a specific event (such as system startup or significant environmental changes), the display lights are controlled to emit calibration light of known intensity. This calibration light can be a light signal of a specific wavelength and brightness, with its intensity pre-set and precisely known. Subsequently, multiple light receiving units located in different areas inside the display case receive this calibration light and record the intensity of the received calibration light. These recorded intensity values ​​reflect the response of each light receiving unit to the known light signal in the current state. Then, by comparing the difference between the calibration light intensity recorded by each light receiving unit and the preset known intensity calibration light, the sensitivity attenuation coefficient of each light receiving unit can be calculated and determined. This attenuation coefficient characterizes the degree of deviation of the actual sensitivity of the light receiving unit from its ideal or initial sensitivity. Once these sensitivity attenuation coefficients are obtained, they will be used to correct for the instantaneous and drastic changes in the light intensity of each area measured subsequently. Specifically, the originally measured instantaneous drastic change amplitude is divided or multiplied by the corresponding sensitivity attenuation coefficient to obtain the corrected instantaneous drastic change amplitude, which more accurately reflects the actual light change. Ultimately, based on these corrected instantaneous drastic change amplitudes, the gain adjustment requirements of the light receiving units in each region can be determined more precisely.

[0066] The aforementioned technical solution enables precise calibration of the sensitivity attenuation of multiple light-receiving units, thereby improving the accuracy of identifying sudden and drastic changes in light intensity in various areas. This allows gain adjustment requirements to more accurately reflect actual changes in lighting conditions, avoiding problems of insufficient or excessive gain adjustment due to decreased sensor sensitivity. Therefore, the energy consumption control system for display lights can achieve more refined and accurate brightness adjustment, further optimizing energy management and enhancing the user experience.

[0067] In some embodiments of this application, the above step S830 determines the sensitivity attenuation coefficient of each of the multiple light receiving units based on the difference between the calibration light intensity and the calibration light of known intensity, including but not limited to steps S910 to S930. Each step will be described in turn below.

[0068] Step S910: Obtain the preset calibration light intensity of different calibration light emitting units; Step S920: Receive calibration light from different calibration light emitting units from multiple light receiving units and obtain the calibration light intensity; Step S930: Determine the sensitivity attenuation coefficient of each of the multiple light receiving units based on the difference between the calibration light intensity and the known calibration light intensity, and the spatial positional relationship between the calibration light emitting unit and the light receiving unit.

[0069] Specifically, obtaining the preset calibration light intensity of different calibration light emitting units means that multiple independent calibration light emitting units can be deployed inside or near the display case. These calibration light emitting units can be preset to emit calibration light at different intensities or at different times, or they themselves may have different preset light intensities. The purpose is to provide multi-source calibration signals to more comprehensively cover all areas inside the display case and provide calibration data from different directions and distances to each light receiving unit.

[0070] The process involves receiving calibration light from different calibration light emitting units via multiple light receiving units. Recording the calibration light intensity can be understood as follows: when these different calibration light emitting units emit calibration light sequentially or simultaneously, multiple light receiving units located in different areas inside the display case receive the calibration light from each of these emitting units. Each light receiving unit records the calibration light intensity it receives from each calibration light emitting unit. In this way, a multi-dimensional calibration data set can be established for each light receiving unit, reflecting its response characteristics in complex lighting environments.

[0071] In practical applications, determining the sensitivity attenuation coefficient of multiple light receiving units based on the difference between the recorded calibration light intensity and the known calibration light intensity, as well as the spatial relationship between the calibration light emitting unit and the light receiving unit, means that when determining the sensitivity attenuation coefficient of each light receiving unit, not only is the simple difference between the received calibration light intensity and the known calibration light intensity considered, but more importantly, the precise spatial relationship between the calibration light emitting unit and the light receiving unit is taken into account. For example, the coordinate information of the emitting and receiving units, either pre-measured or obtained through a positioning system, can be used. By establishing a light propagation model that considers factors such as distance attenuation, reflection, refraction, and obstruction, the theoretical received intensity of the light receiving unit at a specific spatial location can be calculated more accurately. By comparing the actual recorded received intensity with the theoretical received intensity, the sensitivity attenuation coefficient of each light receiving unit can be calculated more accurately. The purpose is to eliminate or reduce measurement errors introduced by factors such as spatial location and optical path complexity, thereby obtaining a more realistic and accurate sensitivity attenuation assessment.

[0072] The above technical solution significantly improves the accuracy of determining the sensitivity attenuation coefficients of multiple light-receiving units inside the display case. By considering the contributions of different calibrated light-emitting units and their spatial relationship with the light-receiving units, the system can more comprehensively and precisely evaluate the actual response characteristics of each light-receiving unit in complex lighting environments. This makes the correction of instantaneous and drastic changes in light intensity in various areas more accurate, thereby ensuring the precision of subsequent gain adjustments. Ultimately, this helps to achieve more refined energy consumption control of the display lights, optimize the display effect, and extend the lifespan of the display lights and related sensors.

[0073] Referring to Figure 2, which is a schematic diagram of an energy consumption control system for a display lamp according to an embodiment of this application, the energy consumption control system 1000 for the display lamp includes: a modulation module 1010 for modulating the light emitted by the display lamp to carry a unique identification signal of a preset frequency; a receiving module 1020 for acquiring the received light and extracting the intensity of the received light and the intensity of the unique identification signal from the received light; a calculation and separation module 1030 for calculating the amount of internally reflected light in the light based on the intensity information of the unique identification signal, and separating the amount of internally reflected light from the total light intensity to obtain the external ambient light intensity; and an adjustment module 1040 for adjusting the brightness of the display lamp based on the external ambient light intensity and human body sensing information.

[0074] Specifically, the modulation module modulates the light emitted by the display lamp, enabling the light to carry a unique identifier signal of a preset frequency. The specific implementation of modulating the light emitted by the display lamp to carry the unique identifier signal of a preset frequency has already been described in the above embodiments and will not be repeated here. It is important to emphasize that the modulation module can be a separate hardware unit, such as a modulation chip integrated into the display lamp driver circuit, or a programmable logic controller (PLC), which controls the power supply or light source characteristics of the display lamp to achieve light modulation. Its core function is to ensure that the emitted light can stably and reliably carry the unique identifier signal of the preset frequency for subsequent reception and identification.

[0075] The receiving module receives light and extracts the intensity information of a unique identifier signal from the received light. It is important to emphasize that the receiving module can consist of one or more light receiving units, such as a photodiode array or a CMOS image sensor, and integrates signal preprocessing circuitry to convert the optical signal into an electrical signal. The module also includes a signal processing unit, such as a digital signal processor (DSP) or a microcontroller, for filtering, amplifying, and demodulating the received electrical signal to accurately extract the intensity information of the unique identifier signal and the total intensity information of the received light.

[0076] The calculation and separation module is used to calculate the amount of internally reflected light in the light source based on the intensity information of the unique identifier signal, and to separate the amount of internally reflected light from the total light intensity to obtain the external ambient light intensity. As a preferred implementation, the calculation and separation module can pre-store a reflection model of the display case's internal environment. This model can be established through calibration during the initial installation of the display case. For example, under the condition that the external ambient light intensity is known to be zero, a unique identifier signal of a specific intensity is emitted through the display lights, and the intensity of the received unique identifier signal and the total light intensity are measured. Through multiple measurements and data fitting, a curve or function relating the intensity of the unique identifier signal to the amount of internally reflected light can be obtained. In actual operation, the calculation and separation module, based on the unique identifier signal intensity information provided by the receiving module, preliminarily estimates the amount of internally reflected light by looking up a table or calculating using a model. Subsequently, the estimated amount of internally reflected light is subtracted from the total light intensity of the received light to obtain the external ambient light intensity. For example, the calculation and separation module can include a lookup table that records preset values ​​for the amount of internally reflected light that may be generated inside the display case under different unique identifier signal intensities. When the receiving module detects the intensity of a specific identifier signal, the calculation and separation module retrieves the corresponding internal reflected light intensity by consulting a table. Then, by subtracting this internal reflected light intensity from the total received light intensity, the external ambient light intensity is obtained. Alternatively, the calculation and separation module can employ a simplified proportional estimation method. For example, it can assume an approximate fixed proportionality coefficient between the internal reflected light intensity and the intensity of the identifier signal emitted by the display light; this coefficient can be predetermined experimentally. After receiving the identifier signal intensity, the calculation and separation module multiplies it by this proportionality coefficient to obtain an estimated value of the internal reflected light intensity. Subsequently, this estimated value is subtracted from the total intensity of the received light to obtain the external ambient light intensity. It should be noted that the above method for calculating and separating internal reflected light intensity may have limitations in certain complex or dynamically changing display environment scenarios. For example, when the position or material of the exhibit changes, the preset model or fixed proportionality coefficient may no longer be accurate, thus affecting the accuracy of the external ambient light intensity calculation.

[0077] The adjustment module adjusts the brightness of the display lights based on ambient light intensity and human presence sensor information. This module can be a microcontroller or a dedicated control chip that receives ambient light intensity information from the calculation and separation module and information from the human presence sensor. Internally, the module can have a preset brightness adjustment strategy or algorithm. For example, when the ambient light intensity is above a certain threshold, the brightness of the display lights is reduced; when it is below a certain threshold, the brightness is increased. Simultaneously, when the human presence sensor indicates the presence of a human, even if the ambient light intensity is high, the brightness can be appropriately increased according to the preset strategy to optimize the display effect. The adjustment module outputs a control signal (e.g., a PWM signal) to the drive circuit of the display lights, thereby achieving precise control of the display light brightness.

[0078] The energy consumption control system for display lights disclosed in this application aims to solve the problem that traditional energy consumption control methods struggle to balance energy saving and display effects in complex lighting environments. Traditional systems typically rely on simple ambient light sensors to measure total light intensity and adjust the brightness of the display lights accordingly. However, this method cannot distinguish between the light emitted by the display lights themselves, external ambient light, and reflected light from inside the display case, leading to inaccurate assessment of external ambient light and consequently affecting the efficiency of energy consumption control and the display effect.

Claims

1. A method for controlling the energy consumption of a display lamp, characterized in that, include: The light emitted by the display lamp is modulated so that the light carries a unique identification signal of a preset frequency; Acquire the received light, and extract the intensity of the received light and the intensity of the unique identification signal from the received light; The ambient light intensity is obtained based on the intensity of the unique identifier signal; the brightness of the display light is adjusted based on the ambient light intensity and human body sensing information.

2. The energy consumption control method for a display lamp according to claim 1, characterized in that, The step of modulating the light emitted by the display lamp to carry a unique identifier signal of a preset frequency includes: acquiring background light environment information inside the display case; adjusting the modulation parameters of the unique identifier signal according to the background light environment information, wherein the modulation parameters include the frequency and / or amplitude of the unique identifier signal; and modulating the emitted light using the adjusted modulation parameters to carry the unique identifier signal, ensuring that there is a preset signal-to-noise ratio between the intensity of the unique identifier signal and the intensity of interference signals in the background light environment information.

3. The energy consumption control method for a display lamp according to claim 1, characterized in that, The step of obtaining the external ambient light intensity based on the intensity of the exclusive identification signal includes: modulating the light emitted by the display lamp so that the light carries the exclusive identification signal and the detection signal, and extracting the wave component synchronized with the detection signal; calculating the ratio coefficient between the internal reflected light intensity and the intensity of the exclusive identification signal based on the synchronized wave component; calculating the internal reflected light amount based on the ratio coefficient and the intensity of the exclusive identification signal; and obtaining the external ambient light intensity based on the internal reflected light amount.

4. The energy consumption control method for a display lamp according to claim 3, characterized in that, The step of extracting the wave component synchronized with the detection signal includes: performing spectral analysis on the received light to identify interference signals in the background light environment information; adjusting the reference frequency and / or phase of the detection signal according to the frequency and intensity of the interference signal; adjusting the gain of the light receiving unit according to the received light; and extracting the wave component synchronized with the detection signal according to the adjusted reference frequency and / or phase of the detection signal and the adjusted gain of the light receiving unit.

5. The energy consumption control method for a display lamp according to claim 4, characterized in that, The step of adjusting the gain of the light receiving unit according to the received light includes: identifying the instantaneous change in the intensity of the received light according to the received light; and adjusting the gain of the light receiving unit according to the magnitude of the instantaneous change in the intensity of the received light.

6. The energy consumption control method for a display lamp according to claim 5, characterized in that, The step of identifying the instantaneous change in the intensity of the received light based on the received light includes: performing spectral analysis on the received light to identify interference signals in the background light environment; adjusting the identification threshold and / or parameters of the identification algorithm for the instantaneous change based on the frequency and amplitude of the interference signals; and identifying the instantaneous change in the intensity of the received light based on the adjusted identification threshold and / or parameters of the identification algorithm.

7. The energy consumption control method for a display lamp according to claim 5, characterized in that, When the instantaneous drastic changes in light intensity differ across different areas of the display case, the step of adjusting the gain of the light receiving unit based on the instantaneous change in light intensity includes: receiving the light intensity of each area of ​​multiple light receiving units and identifying the instantaneous drastic changes in light intensity in each area, wherein the multiple light receiving units are located in different areas inside the display case; determining the gain adjustment requirements for each area based on the instantaneous drastic changes in light intensity in each area; and independently adjusting the gain of the multiple light receiving units based on the gain adjustment requirements for each area.

8. The energy consumption control method for a display lamp according to claim 7, characterized in that, The step of determining the gain adjustment requirements for each region based on the instantaneous drastic change in light intensity includes: within a preset time interval, emitting calibration light of known intensity from the display lamp; the plurality of light receiving units receiving the calibration light respectively and recording the intensity of the received calibration light; determining the sensitivity attenuation coefficient of each of the plurality of light receiving units based on the difference between the calibration light intensity and the known intensity calibration light; correcting the instantaneous drastic change in light intensity for each region based on the sensitivity attenuation coefficient to obtain the corrected instantaneous drastic change amplitude; and determining the gain adjustment requirements for each region based on the corrected instantaneous drastic change amplitude.

9. The energy consumption control method for a display lamp according to claim 8, characterized in that, The step of determining the sensitivity attenuation coefficient of each of the plurality of light receiving units based on the difference between the calibration light intensity and the known intensity of the calibration light includes: obtaining the preset calibration light intensity of different calibration light emitting units; receiving calibration light from different calibration light emitting units from the plurality of light receiving units to obtain the calibration light intensity; and determining the sensitivity attenuation coefficient of each of the plurality of light receiving units based on the difference between the calibration light intensity and the known calibration light intensity, and the spatial positional relationship between the calibration light emitting unit and the light receiving unit.

10. An energy consumption control system for display lights, characterized in that, The system includes: a modulation module for modulating the light emitted by the display lamp to carry a unique identifier signal of a preset frequency; a receiving module for acquiring the received light and extracting the intensity of the received light and the intensity of the unique identifier signal from the received light; a calculation and separation module for calculating the amount of internally reflected light in the light based on the intensity information of the unique identifier signal, and separating the amount of internally reflected light from the total light intensity of the light to obtain the external ambient light intensity; and an adjustment module for adjusting the brightness of the display lamp based on the external ambient light intensity and human body sensing information.

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