Inductive lighting regulation method and system

Abstract

The present application relates to the field of lighting technology, in particular to a non-sense lighting method and system which realizes non-sense comfortable lighting, and can adjust the color temperature and the brightness of the lighting space to be adjusted respectively according to the current parameters of the lighting space to be adjusted and the target light parameters, the color temperature change value of each adjustment is less than or equal to the non-sense color temperature change threshold, and the brightness change rate of each adjustment is less than or equal to the non-sense brightness change rate threshold.

Description

Technical Field

[0001] This invention relates to the field of lighting technology, and more specifically to a non-sensory lighting adjustment method and a non-sensory lighting adjustment system using the aforementioned non-sensory lighting adjustment method. Background Technology

[0002] Current lighting technologies typically employ lighting equipment operating at a constant state, resulting in an unreasonable color temperature and brightness ratio in the light emitted. Users who work or live in such lighting environments for extended periods are prone to fatigue, and the stark contrast between indoor and outdoor environments can easily cause discomfort. Summary of the Invention

[0003] The purpose of this invention is to overcome at least one defect of the prior art and provide a method and system for adjusting lighting without being noticed, thereby achieving comfortable lighting without being noticed.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A method for adjusting lighting without sensory input includes the following steps:

[0006] Step 1: At a certain preset adjustment time, obtain the light parameters in the lighting space to be adjusted, and the light parameters are the current parameters; obtain the target light parameters corresponding to the preset adjustment time. The target light parameters are determined based on the light parameters of the preset outdoor location at the preset adjustment time. The preset outdoor location is the geographical location of the lighting space to be adjusted. The light parameters include brightness and color temperature.

[0007] Step 2: Calculate the color temperature difference between the target ray parameter and the current parameter, and the absolute value of this difference is the color temperature difference; calculate the percentage change in brightness of the target ray parameter relative to the current parameter, and the absolute value of this percentage change is the brightness change rate.

[0008] Step 3 includes steps 31 and 32, which are performed simultaneously.

[0009] Step 31: If the color temperature difference is greater than or equal to the threshold for imperceptible color temperature change, then the lighting equipment of the lighting space to be adjusted is adjusted n1 times according to the target light parameters, and n1 is greater than or equal to 1, so that the color temperature of the lighting space to be adjusted is the same as the color temperature of the target light parameters, and the color temperature change value of a single adjustment is less than or equal to the threshold for imperceptible color temperature change.

[0010] Step 32: If the brightness change rate is greater than or equal to the threshold of imperceptible brightness change rate, then the lighting equipment of the lighting space to be adjusted is adjusted n2 times according to the target light parameters, and n2 is greater than or equal to 1, so that the brightness of the lighting space to be adjusted is the same as the brightness of the target light parameters, and the brightness change rate of a single adjustment is less than or equal to the threshold of imperceptible brightness change rate.

[0011] Step 4: At the next preset adjustment time, repeat steps 1-3.

[0012] Furthermore, the time interval t seconds between adjacent preset adjustment times is 10≤t≤300.

[0013] Furthermore, based on the pre-made 24-hour illumination change curve corresponding to the day, the entire illumination time is divided into several time periods according to the slope of the curve, and the interval between adjacent preset adjustment times within each time period is set according to the slope of the curve.

[0014] Furthermore, in step 31, if the color temperature difference is less than the threshold for imperceptible color temperature change, then the percentage difference between the threshold for imperceptible color temperature change and the color temperature difference is calculated as follows: (threshold for imperceptible color temperature change - color temperature difference) / threshold for imperceptible color temperature change × 100%. If the percentage difference is less than or equal to 20%, then the color temperature of the lighting space to be adjusted is adjusted according to the target light parameters; otherwise, the adjustment is abandoned.

[0015] Furthermore, in step 32, if the brightness change rate is less than the threshold for imperceptible brightness change rate, then the percentage difference between the threshold for imperceptible brightness change rate and the brightness change rate is calculated as follows: (threshold for imperceptible brightness change rate - brightness change rate) / threshold for imperceptible brightness change rate × 100%. If the percentage difference is less than or equal to 20%, then the brightness of the lighting space to be adjusted is adjusted according to the target light parameters; otherwise, the adjustment is abandoned.

[0016] Furthermore, in step 1, based on the weather conditions and lighting requirements of the day, the target light parameters are obtained using any of the following methods:

[0017] Method 1: Obtained based on a pre-made 24-hour light change curve corresponding to the day;

[0018] Method 2 is obtained by real-time measurement of all-sky light under unobstructed conditions at a preset outdoor location.

[0019] Furthermore, the threshold for imperceptible color temperature change is ΔCCT, where 40K≤ΔCCT≤50K.

[0020] Furthermore, the threshold for the imperceptible brightness change rate is ΔLux, where 3%≤ΔLux≤8%.

[0021] Furthermore, every afternoon and evening, if the color temperature of the preset outdoor light parameters is ≤α1 (2500K≤α1≤3500K), or the brightness of the preset outdoor light parameters is ≤β1 (100Lux≤β1≤500Lux), then the adjustment of the light parameters of the space to be adjusted will be stopped. The light parameters of the space to be adjusted will be kept at the value after the last adjustment and this value will be the parameter hold value until the lighting is stopped.

[0022] The initial moment is defined as the moment when the lighting equipment in the space to be adjusted is first turned on each day.

[0023] If the color temperature of the light parameter at the preset outdoor location at the initial moment is ≤ α1, and / or the brightness of the light parameter at the preset outdoor location at the initial moment is ≤ β1, then the light parameter of the lighting space to be adjusted is adjusted to the parameter hold value of the previous day until the color temperature of the light parameter at the preset outdoor location is > α1 and the brightness of the light parameter at the preset outdoor location is > β1, and then steps 1-4 are executed.

[0024] If the color temperature of the preset outdoor light parameters at the initial moment is greater than α1 and the brightness of the preset outdoor light parameters at the initial moment is greater than β1, then the light parameters of the lighting space to be adjusted are directly set to the light parameters of the preset outdoor position at the initial moment, and then steps 1-4 are executed.

[0025] A non-intrusive lighting adjustment system includes a control system and lighting equipment, an indoor sensor group, and an outdoor sensor group, all connected to the control system. The control system is used to execute the non-intrusive lighting adjustment method. The indoor sensor group is used to collect light parameters within the space to be regulated. The outdoor sensor group is used to collect light parameters at a preset outdoor location.

[0026] Furthermore, the control system is also used to allow users to input and modify the threshold for imperceptible color temperature change and the threshold for imperceptible brightness change rate, as well as to allow users to import the 24-hour light change curve for each day; the control system includes an intelligent operation panel set in the space to be adjusted for lighting; the control system is also used to communicate with mobile clients and / or PCs.

[0027] Furthermore, the control system can also adjust and maintain the light parameters within the space to be illuminated at specific values ​​as needed.

[0028] Furthermore, the lighting device includes a multi-channel adjustable LED engine, an LED lamp, and a multi-channel programmable intelligent LED driver; the LED lamp includes narrowband LED particles with 5-11 controllable peaks and broadband phosphor-converted white light LEDs.

[0029] The non-intrusive lighting adjustment method and system of the present invention ensure that the light parameters in the space to be adjusted always conform to the color temperature and brightness ratio of natural light, making the user more comfortable; moreover, each adjustment of the color temperature and brightness of the space to be adjusted is carried out without the user's notice, ensuring the comfort of the entire lighting process and helping to ensure the continuity of the user's work concentration. Detailed Implementation

[0030] The following examples further illustrate specific embodiments of the present invention. The scope of protection of the present invention is not limited to the descriptions in the following examples.

[0031] This invention discloses a non-intrusive lighting adjustment system for use in spaces requiring lighting adjustment. The system includes a control system and lighting equipment, an indoor sensor, and an outdoor sensor, all connected to the control system.

[0032] The space to be adjusted for lighting is either a fully enclosed windowless space or a fully enclosed space with windows. The geographical location of the space to be adjusted for lighting is a preset outdoor location.

[0033] The lighting equipment includes a multi-channel adjustable LED engine, LED lights, broadband phosphor-to-white LEDs, and a multi-channel programmable intelligent LED driver.

[0034] Specifically, the multi-channel adjustable LED engine integrates control modules for multiple independent LED drive channels, supporting constant current output, PWM dimming, etc. The LED lamp includes narrowband LED particles with 5-11 controllable peaks and broadband phosphor-converted white light LEDs; specifically, using broadband phosphor-converted white light LEDs as a base, combined with narrowband LED particles, precise control of the LED lamp's spectrum is achieved, thereby accurately adjusting the light parameters within the illuminated space. The LED lamp can be one or more of the following forms: panel lights, downlights, linear light strips, etc. The multi-channel programmable intelligent LED driver can independently and precisely control the output current of each connected LED channel. The multi-channel adjustable LED engine, LED lamp, and LED driver can all be implemented using existing technologies, which will not be elaborated upon here.

[0035] Specifically, the distribution of LED lights in the space to be illuminated is adjusted according to different scenarios. For example, in offices and similar environments, LED lights are evenly distributed on the ceiling. In personal studios, LED lights are more concentrated near the workbench, while other areas may have fewer or no LED lights. There are many other scenarios as well, which will not be listed here.

[0036] The indoor sensor array is used to collect light parameters within the space to be adjusted.

[0037] Specifically, when the space to be regulated is a fully enclosed, windowless space, if the LED lights are evenly distributed throughout the space, then the indoor sensor group can be equipped with only one indoor sensor.

[0038] Specifically, when the space to be regulated is a fully enclosed space with windows, the indoor sensor group includes multiple indoor sensors to collect light parameters of each area within the space to be regulated. The lighting equipment is grouped according to the corresponding areas. For example, one indoor sensor (denoted as the first sensor) is set in the windowed area, and one indoor sensor (denoted as the second sensor) is set in the remaining areas. The control system controls the lighting equipment corresponding to the windowed area based on the data collected by the first sensor, and controls the lighting equipment corresponding to the remaining areas based on the second sensor, thereby making full use of the natural light entering through the window and also achieving energy saving.

[0039] The arrangement of the indoor sensor array should take the following into consideration: the photometer point should be aligned with the key visual task area - such as "the desktop under the lighting fixture" - to provide real-time feedback on the actual total illuminance; or, for fully enclosed spaces with windows, the indoor sensor should be installed on the ceiling at approximately one-third of the distance from the window to the depth of the room (not directly under the corresponding lighting fixture) to avoid errors caused by direct sunlight or the indoor sensor being too close to the window.

[0040] The outdoor sensor group is used to collect light parameters at a preset outdoor location in real time; the outdoor sensor group is set in an unobstructed environment and is used to collect light parameters of the entire sky under unobstructed conditions.

[0041] The control system receives data from an indoor sensor group (or an indoor sensor group and an outdoor sensor group) and executes a seamless lighting adjustment method to control the operating state of the lighting equipment, thereby achieving seamless adjustment of the light parameters within the space to be lit. Furthermore, the control system includes an intelligent operation panel (which can be button-type, touchscreen-type, or a combination of both) installed within the space to be lit; the control system is also used to communicate with mobile clients and / or PCs, providing users with more control methods.

[0042] The following will provide a detailed description of the non-intrusive lighting adjustment method.

[0043] The non-sensory lighting adjustment method includes the following steps:

[0044] Step 1: At a preset adjustment time, acquire the light parameters within the lighting space to be adjusted, and these light parameters are the current parameters. Acquire the target light parameters corresponding to the preset adjustment time. The target light parameters are determined based on the light parameters of a preset outdoor location at the preset adjustment time, where the preset outdoor location is the geographical location of the lighting space to be adjusted. The light parameters include brightness and color temperature.

[0045] Specifically, based on the weather conditions and lighting requirements of the day, the target light parameters can be obtained using any of the following methods:

[0046] Method 1: Obtain target light parameters based on a pre-created 24-hour light variation curve corresponding to the current day; automatically match a dynamic light curve representing the sunrise and sunset patterns of the preset outdoor location based on the user-set geographical latitude and longitude and the current date (this curve can be obtained using existing technology, mainly through two methods:

[0047] Method 1 – Model-Based Algorithm Generation: Using mature astronomical and meteorological algorithms, by inputting the latitude, longitude, altitude, and date of a specific geographical location, the solar altitude angle and azimuth angle at that location under clear weather conditions can be accurately calculated. Furthermore, the brightness and color temperature variations of natural light (including direct sunlight and diffused skylight) over a 24-hour period can be simulated. The 24-hour light variation curve is a function set containing two dependent variables: a "color temperature versus time curve" and a "brightness versus time curve," with each moment corresponding to a color temperature value and a brightness value.

[0048] Method Two—Using a Standard Meteorological Database: Meteorological departments or professional organizations in various countries typically provide historical sunshine data for specific regions. This data can be purchased or acquired to form a database covering the entire year, which is pre-installed in the control system. For example, if the current date is July 20th, the dynamic sunshine curve of the sunrise and sunset patterns for July 20th of the previous year can be retrieved to obtain the corresponding 24-hour sunshine variation curve for that day. The control system also pre-stores the 24-hour sunshine variation curves for every day of the year; these 24-hour sunshine variation curves can be pre-imported into the control system.

[0049] Method 2 obtains the target light parameter by real-time measurement of the unobstructed all-sky light at a preset outdoor location; in other words, the target light parameter is real-time data. For example, if the weather is good and work requires good lighting, the target light parameter can be obtained using either Method 1 or Method 2. If the weather is bad and outdoor light is poor, but work requires good lighting, then Method 1 should be used to obtain the target light parameter. Many other situations exist, which will not be detailed here. Users can set the method for obtaining the target light parameter through the control system according to their actual needs.

[0050] It should be noted that the preset adjustment time is not a fixed point in time, but is determined based on the time when the lighting equipment in the space to be adjusted is turned on. For example, if the lighting equipment is turned on at 8:00:00 in the morning and the time interval between adjacent preset adjustment times is 10 seconds, then the first preset adjustment time is 8:00:11, and so on.

[0051] Step 2: Calculate the color temperature difference between the target light parameter and the current parameter, where the absolute value of this difference is the color temperature difference, i.e., color temperature difference = |color temperature value of the target light parameter - color temperature value of the current parameter|. Calculate the percentage change in brightness of the target parameter relative to the brightness of the current parameter, where the absolute value of this percentage change is the brightness change rate, i.e., brightness change rate = |(brightness value of the current parameter - brightness value of the target light parameter) / brightness value of the current light parameter × 100%|.

[0052] Step 3 includes steps 31 and 32, which are performed simultaneously. That is to say, the color temperature and brightness of the lighting space to be adjusted are adjusted separately, and the adjustment processes of the two are carried out independently of each other.

[0053] Step 31: If the color temperature difference is greater than or equal to the threshold for imperceptible color temperature change, then the lighting equipment in the space to be regulated is adjusted n1 times according to the target light parameters, where n1 ≥ 1, so that the color temperature of the space to be regulated is the same as the color temperature of the target light parameters, and the color temperature change value of a single adjustment is less than or equal to the threshold for imperceptible color temperature change. Further, the interval between two adjacent adjustments is t1 seconds, where 3 < t1 ≤ the time interval t between two adjacent preset adjustment times (see below). Preferably, 5 ≤ t1 ≤ the time interval t between two adjacent preset adjustment times (see below).

[0054] Specifically, the control system automatically determines the necessary number of adjustments and the color temperature change value for each adjustment based on the current main adjustment cycle (i.e., the time interval t between the current adjustment time and the next adjustment time) and the color temperature difference. Furthermore, the control system automatically determines the duration t1 of the interval between two adjacent adjustments based on the number of adjustments, so that each adjustment is completed in a way that is imperceptible to the user before the next adjustment time. The color temperature change value of each adjustment can be the same or different (for example, if the color temperature difference is 60K, it can be adjusted twice with a color temperature change value of 30K each time, or it can be adjusted twice, with the first adjustment to 45K and the second adjustment to 15K). When the number of adjustments required between two adjacent preset adjustment times is ≥3, the duration t1 of the interval between two adjacent adjustments can be a fixed value (for example, t1 is fixed to 3s or 5s or longer - determined according to the duration t of the interval between two adjacent preset adjustment times), or t1 can be adjusted according to the color temperature change value of each adjustment (for example, if the color temperature difference is 95K, the first adjustment is 45K, the second adjustment is 25K, and the third adjustment is 25K, then the second adjustment is performed after an interval of 5-10s after the first adjustment, and the third adjustment is performed after an interval of 3-5 seconds after the second adjustment to 25K).

[0055] Furthermore, if the color temperature difference is less than the threshold for imperceptible color temperature change, then the percentage difference between the threshold for imperceptible color temperature change and the color temperature difference is calculated as follows: (threshold for imperceptible color temperature change - color temperature difference) / threshold for imperceptible color temperature change × 100%. If this percentage difference is less than or equal to 20%, then the color temperature of the lighting space to be adjusted is adjusted according to the target light parameters; otherwise, the adjustment is abandoned.

[0056] As an alternative approach, if the color temperature difference is less than the threshold for imperceptible color temperature change, then adjustment is abandoned.

[0057] Step 32: If the brightness change rate is greater than or equal to the imperceptible brightness change rate threshold, then the lighting equipment in the space to be regulated is adjusted n2 times according to the target light parameters, where n2 ≥ 1, so that the brightness of the space to be regulated is the same as the brightness of the target light parameters, and the brightness change rate of a single adjustment is less than or equal to the imperceptible brightness change rate threshold. Further, the interval between two adjacent adjustments is t1 seconds, where 3 < t1 ≤ the time interval t between two adjacent preset adjustment times (see below). Preferably, 5 ≤ t1 ≤ the time interval t between two adjacent preset adjustment times (see below).

[0058] If the rate of change in brightness is less than the threshold for imperceptible rate of change in brightness, then the percentage difference between the threshold for imperceptible rate of change in brightness and the rate of change in brightness is calculated as follows: (threshold for imperceptible rate of change in brightness - rate of change in brightness) / threshold for imperceptible rate of change in brightness × 100%. If the percentage difference is less than or equal to 20%, then the brightness of the space to be illuminated is adjusted according to the target light parameters; otherwise, the adjustment is abandoned.

[0059] As an alternative approach, if the rate of change in brightness is less than the threshold for imperceptible rate of change in brightness, then adjustment is abandoned.

[0060] Specifically, the threshold for imperceptible color temperature change is determined experimentally, and includes the following steps:

[0061] Step 1: In a strictly controlled light environment laboratory, have the subject observe a light source with an initial brightness of Lux0 (e.g., 500 Lux) and an initial color temperature of CCT0 (e.g., 5000K / neutral white light). The subject faces the light source in a sitting or standing position and is given sufficient time (e.g., several minutes) to adapt to the light source. In the experiment, the brightness of the light source remained constant, and the color temperature was gradually changed in fixed increments (e.g., each change in color temperature was 0.5-5K). For example, each change was 5K: the first adjustment was from 5000K to 5005K, the second from 5005K to 5010K, and so on... the nth adjustment was from [5000 + (n-1) × 5]K to (5000 + 5n)K. After each adjustment, a 1-2 second wait was taken. If the subject perceived a change in the color temperature, they would actively signal it—for example, by pressing a timer button—to record the time it took to perceive the change. If, during the m-th adjustment (i.e., from [5000 + 5 × (m-1)]K to (5000 + 5m)K), the subject reported perceiving a color temperature change, and the color temperature value at that moment was recorded, then the subject's threshold for imperceptible color temperature change was between 5 × (m-1) K and 5m. The range is between K, that is, between the color temperature change amount of the (m-1)th adjustment and the color temperature change amount of the mth adjustment.

[0062] Step 2: Adjust the color temperature of the light source to the initial value CCT0. The subject faces the light source in a sitting or standing position, giving the subject enough time to readjust to the light source. Then, directly adjust the color temperature of the light source to [5000 + 5 × (m-1)] K, and then increase it by 1 K each time (this can be adjusted according to the required accuracy). If the subject reports feeling a color temperature change after the p-th adjustment (0 < p ≤ 5, p is an integer), then the subject's threshold for imperceptible color temperature change is finally determined to be [5 × (m-1) + 1 × (p-1)] K. Therefore, the threshold for imperceptible color temperature change is the difference between the color temperature value before the last adjustment when the subject feels a color temperature change and the initial color temperature CCT0.

[0063] Step 3: Perform the above experiment on q subjects (q≥500) to obtain q threshold data. Process these data using statistical methods (e.g., average, median, etc.) to finally determine a universally applicable threshold for imperceptible color temperature change, ΔCCT, where 40K≤ΔCCT≤50K. Further, the imperceptible color temperature change threshold ΔCCT is 45K.

[0064] As another experimental method for the aforementioned threshold for imperceptible color temperature change, it includes the following steps:

[0065] Step 10: In a strictly controlled light environment laboratory, have the subject observe a light source with an initial value of Lux0 (e.g., 500 Lux) and an initial color temperature of CCT0 (e.g., 5000K / neutral white light). The subject should face the light source in a seated or standing position and be given sufficient time (e.g., several minutes) to adapt to it. During the experiment, the brightness of the light source remains constant. Starting from the initial color temperature CCT0, the color temperature of the light source is adjusted stepwise in equal increments (e.g., a tolerance of 5K). Specifically, the first adjustment changes from 5000K to 5005K, the second from 5000K to 5010K, and so on, until the nth adjustment changes from 5000K to 5000+5nK. After each adjustment, wait 1-2 seconds. If the subject perceives a change in the color temperature of the light source, they should actively signal it—for example, by pressing a timer button to record the time of observation and illuminating an indicator light or triggering an alarm sound. If the subject does not report perceiving a change in color temperature, the color temperature of the light source is adjusted back to 5000K for the next adjustment. If, after the m-th adjustment (i.e., from 5000 K to 5000+5m K), the subject observes a change in the color temperature of the light source and records the color temperature value of the light source at that moment, then the subject's threshold for imperceptible color temperature change is between 5×(m-1) K and 5m K, which is between the color temperature change amount of the (m-1)-th adjustment and the color temperature change amount of the m-th adjustment.

[0066] Step 20: Adjust the color temperature of the light source to the initial value CCTO. The subject faces the light source in a sitting or standing position, allowing sufficient time for the subject to readjust to the light source. The color temperature of the light source is adjusted sequentially in arithmetic steps (e.g., with a tolerance of 1K, which can be adjusted according to accuracy requirements) with a minimum color temperature change of [5(m-1)+1×1]K (specifically, the first adjustment changes from 5000K to [5000+5(m-1)+1]K, the second adjustment changes from 5000K to [5000+5(m-1)+1×2]K, and so on). If the subject reports a perceived color temperature change after the p-th adjustment (0 < p ≤ 5, p is an integer), then the subject's threshold for imperceptible color temperature change is determined to be [5×(m-1)+1×(p-1)]K. Therefore, the threshold for imperceptible color temperature change is the difference between the color temperature value before the last adjustment in which the subject perceives a color temperature change and the initial color temperature CCT0.

[0067] It should be noted that during the experiment, there was no significant difference for the subjects when the color temperature of the light source was adjusted up and down. In other words, the threshold for imperceptible color temperature change was the same for the subjects during the process of increasing and decreasing the color temperature value.

[0068] Step 30: Perform the above experiment on q subjects (q≥500) to obtain q threshold data. Process these data using statistical methods (e.g., average, median, etc.) to finally determine a universally applicable threshold for imperceptible color temperature change, ΔCCT, where 40K≤ΔCCT≤50K. Further, the imperceptible color temperature change threshold ΔCCT is 45K.

[0069] Specifically, the threshold for the imperceptible brightness change rate is determined through the following experiments, which include the following steps:

[0070] Step 100: In a strictly controlled light environment laboratory, the subject observes a light source with an initial brightness of Lux0 (e.g., 500 Lux) and an initial color temperature of CCTO (e.g., 5000K / neutral white light). The subject faces the light source in a sitting or standing position and is given sufficient time (e.g., several minutes) to adapt to the light source. In the experiment, the color temperature of the light source remained constant. Starting with an initial brightness of Lux0, the brightness of the light source was gradually changed in arithmetic steps (for example, each change in illuminance was 0.1%-5% of the current illuminance; taking each change in brightness as Lux0×1%, the first adjustment was from 500 lux to 505 lux, the second adjustment was from 500 lux to 510 lux, and so on... the nth adjustment was from 500 lux to (500+n×1%) lux). After each adjustment, a wait of 1-2 seconds was required. If the subject perceived a change in the brightness of the light source, they would actively signal it—for example, by pressing the timer button to record the time of perception of the change and lighting up the indicator light / or triggering an alarm sound. If the subject did not signal a change in the brightness of the light source, the brightness of the light source would be adjusted back to 500 Lux for the next adjustment. If, during the m-th adjustment (i.e., from 500 lux to (500 + m × 1%) lux), the illuminance value is recorded when the subject perceives the change in light source brightness, then the subject's threshold for the rate of change of brightness without perception is between the two rates of change of brightness before and after this adjustment (i.e., [(m-1) × 1%] ~ m × 1%).

[0071] Step 200: Adjust the illuminance of the light source to the initial value lux0. The subject faces the light source in a sitting or standing position, giving the subject sufficient time to readjust to the light source. Then, adjust the light source brightness step by step in equal increments (e.g., the tolerance is 0.1% of the current brightness, which can be adjusted according to accuracy requirements) with [(m-1)×1+0.1%] as the minimum brightness change rate (specifically, the first adjustment changes from 500Lux to 500×[(m-1)×1+0.1%×1], the second adjustment changes from 500Lux to 500×[(m-1)×1+0.1%×2…]). If the subject reports a change in brightness after the p-th adjustment (0<p≤10, p is an integer), then the subject's imperceptible brightness change rate threshold is determined to be [(m-1)×1%+0.1%×(p-1)] of the current initial brightness value. Therefore, the imperceptible brightness change rate threshold is the brightness change rate before the last adjustment in which the subject perceives a change in brightness.

[0072] It should be noted that during the experiment, there was no significant difference for the subjects when the light source brightness was increased or decreased. In other words, the threshold of the rate of change of brightness that the subjects could not perceive was the same during the process of increasing and decreasing the light source brightness.

[0073] Step 300: The above experiment is performed on q subjects (q≥500) to obtain q threshold data points. These data points are then processed using statistical methods (e.g., average, median, etc.) to finally determine a universally applicable threshold for the imperceptible rate of change in brightness, ΔLux, where 3% ≤ ΔLux ≤ 8% of the current brightness. Further, the imperceptible rate of change in brightness threshold ΔLux is 5% of the current brightness.

[0074] It should be noted that the reason why the rate of change of brightness is a percentage of the current brightness is that after conducting the same experimental procedure under different initial brightness levels (e.g., 400 lux or 300 lux), it was found that the perception threshold of the rate of change of brightness is not a fixed value under different initial color temperatures, unlike the perception threshold of color temperature change. Instead, it is related to the current brightness level. If the current brightness is high, the result of multiplying the current brightness by the rate of change of brightness is high; if the current brightness is low, the result of multiplying the current brightness by the rate of change of brightness is low. In other words, the value required to induce a perceived change of brightness in a high-brightness environment is greater than the value required to induce a perceived change of brightness in a low-brightness environment.

[0075] Specifically, in the control system, the initial value of the imperceptible color temperature change threshold ΔCCT is 45K, and the initial value of the imperceptible brightness change rate threshold ΔLux is 5%. Users can adjust these two values ​​according to their own circumstances.

[0076] Step 400: At the next preset adjustment time, repeat steps 1-3.

[0077] Specifically, the time interval t seconds between adjacent preset adjustment times is 10 ≤ t ≤ 300. Further, 10 ≤ t ≤ 100. Further still, based on a pre-made 24-hour illumination change curve corresponding to the day, the entire illumination time is divided into several time periods according to the slope of the curve, and the time interval between adjacent preset adjustment times within each time period is set according to the slope of the curve.

[0078] Specifically, based on a pre-made 24-hour illumination variation curve corresponding to the day (including color temperature-time variation curve and brightness-time variation curve), the entire illumination time is divided into several control time periods according to the slopes of the two curves. For each control time period, the slopes of the two curves are calculated, and the larger of their absolute values ​​is taken as the dominant slope. The time interval t for this control time period is determined based on the dominant slope. In practical applications, if the absolute values ​​of the slopes of the two curves are close and small within a certain control time period, the time interval t is set to a larger value (e.g., 100, 150, 200, 250, or 300, etc.) to reduce the adjustment frequency and save energy; if the absolute value of one or both slopes of the two curves is larger within a certain control time period, the time interval t is set to a smaller value (e.g., 10, 20, 30, 40, 50, or 60, etc.).

[0079] The aforementioned non-intrusive lighting adjustment method ensures that the light parameters in the space to be adjusted always conform to the color temperature and brightness ratio of natural light, making the user more comfortable. Moreover, each adjustment of the color temperature and brightness of the space to be adjusted is carried out without the user's notice, ensuring the comfort of the entire lighting process and helping to maintain the continuity of the user's work concentration.

[0080] The non-sensory lighting adjustment method further includes the following steps:

[0081] From noon to evening each day, if the color temperature of the preset outdoor light parameters is ≤α1 (2500K≤α1≤3500K), or the brightness of the preset outdoor light parameters is ≤β1 (100Lux≤β1≤500Lux), then the adjustment of the light parameters of the space to be adjusted will be stopped. The light parameters of the space to be adjusted will be maintained at the value after the last adjustment, and this value will be the parameter hold value, until the lighting is stopped - that is, the lighting equipment is turned off.

[0082] The initial moment is defined as the moment when the lighting equipment in the space to be adjusted is first turned on each day. If the color temperature of the light parameter at the preset outdoor location at the initial moment is ≤ α1, and / or the brightness of the light parameter at the preset outdoor location at the initial moment is ≤ β1, then the light parameter of the space to be adjusted is set to the parameter hold value of the previous day until the color temperature of the light parameter at the preset outdoor location is > α1 and the brightness of the light parameter at the preset outdoor location is > β1, and then steps 1-4 are executed. If the color temperature of the light parameter at the preset outdoor location at the initial moment is > α1 and the brightness of the light parameter at the preset outdoor location is > β1, then the light parameter of the space to be adjusted is directly set to the light parameter at the preset outdoor location at the initial moment, and then steps 1-4 are executed.

[0083] As an alternative implementation of the sensorless lighting adjustment system of the present invention, in addition to controlling the lighting equipment according to the sensorless lighting adjustment method, the sensorless lighting adjustment system can also operate in the following manner: the control system adjusts and maintains the light parameters in the space to be regulated to a specific value as needed, the specific value being set according to the lighting requirements. Alternatively, the control system has several preset lighting modes, such as focus mode (high illuminance + cool color temperature), meeting mode (illuminating the meeting table + reducing ambient brightness), relaxation mode (low illuminance + warm color temperature), etc., and the user can select a specific lighting mode through the control system.

[0084] It should be noted that in the description of this invention, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship as commonly used during use, and are only for ease of description, not indicating that the device or element referred to must have a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating relative importance.

[0085] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A method for adjusting lighting without sensory input, characterized in that, Includes the following steps: Create a 24-hour light change curve corresponding to the day. The 24-hour light change curve is a function set containing two dependent variables, specifically the curve of color temperature changing with time and the curve of brightness changing with time. Each moment corresponds to a color temperature value and a brightness value. Obtain the 24-hour light intensity variation curve corresponding to the current day using any of the following methods: Method 1, model-based algorithm generation: By inputting the latitude, longitude, altitude and date of a specific geographical location through astronomical and meteorological algorithm models, the solar altitude angle and azimuth angle of the location under clear weather are calculated, and then the brightness and color temperature variation of natural light within 24 hours of a day are simulated. Method 2: Use a standard meteorological database: Obtain historical sunshine data for a specific region to form a database covering the whole year. By retrieving the dynamic sunshine curves of sunrise and sunset patterns on the same date in the previous year, obtain the corresponding 24-hour sunshine variation curve for the current day. Step 1: At a certain preset adjustment time, obtain the light parameters in the lighting space to be adjusted, and the light parameters are the current parameters; obtain the target light parameters corresponding to the preset adjustment time. The target light parameters are determined based on the light parameters of the preset outdoor location at the preset adjustment time. The preset outdoor location is the geographical location of the lighting space to be adjusted. The light parameters include brightness and color temperature. Based on the weather conditions and lighting requirements of the day, the target light parameters are obtained using any of the following methods: Method 1: Based on the pre-made 24-hour light change curve corresponding to the day, the target light parameters corresponding to the preset adjustment time are the brightness value and color temperature value on the 24-hour light change curve corresponding to the preset adjustment time. Method 2, obtained by real-time measurement of all-sky light under unobstructed conditions at a preset outdoor location; Step 2: Calculate the color temperature difference between the target light parameters and the current parameters, and the absolute value of this difference is the color temperature difference; Calculate the percentage change in brightness of the target ray parameters relative to the current parameters, and the absolute value of this percentage change is the brightness change rate; Step 3 includes steps 31 and 32, which are performed simultaneously. Step 31: If the color temperature difference is greater than or equal to the threshold for imperceptible color temperature change, then based on the target light parameters, the lighting equipment of the lighting space to be adjusted is adjusted n1 times without the user noticing, and n1 is greater than or equal to 1, so that the color temperature of the lighting space to be adjusted is the same as the color temperature of the target light parameters, and the color temperature change value of a single adjustment is less than or equal to the threshold for imperceptible color temperature change. Step 32: If the brightness change rate is greater than or equal to the threshold of imperceptible brightness change rate, then based on the target light parameters, the lighting equipment of the lighting space to be adjusted is adjusted n2 times without the user noticing, and n2 is greater than or equal to 1, so that the brightness of the lighting space to be adjusted is the same as the brightness of the target light parameters, and the brightness change rate of a single adjustment is less than or equal to the threshold of imperceptible brightness change rate. Step 4: At the next preset adjustment time, repeat steps 1-3. The time interval between adjacent preset adjustment times is set according to a pre-made 24-hour light change curve corresponding to the day. The entire lighting time is divided into several time periods according to the slope of the 24-hour light change curve. The time interval between adjacent preset adjustment times within each time period is set according to the slope of the curve.

2. The non-sensory lighting adjustment method according to claim 1, characterized in that: In step 31, if the color temperature difference is less than the threshold for imperceptible color temperature change, then calculate the percentage difference between the threshold for imperceptible color temperature change and the color temperature difference = (threshold for imperceptible color temperature change - color temperature difference) / threshold for imperceptible color temperature change × 100%. If the percentage difference is less than or equal to 20%, then adjust the color temperature of the lighting space to be adjusted according to the target light parameters; otherwise, abandon the adjustment this time.

3. The non-sensory lighting adjustment method according to claim 1, characterized in that: In step 32, if the brightness change rate is less than the threshold for imperceptible brightness change rate, then the percentage difference between the threshold for imperceptible brightness change rate and the brightness change rate is calculated as follows: (threshold for imperceptible brightness change rate - brightness change rate) / threshold for imperceptible brightness change rate × 100%. If the percentage difference is less than or equal to 20%, then the brightness of the lighting space to be adjusted is adjusted according to the target light parameters; otherwise, the adjustment is abandoned.

4. The non-sensory lighting adjustment method according to claim 1, characterized in that: The threshold for imperceptible color temperature change can be obtained using any of the following methods: The first method for obtaining the threshold of imperceptible color temperature change includes the following steps: Step 1: In a light environment laboratory, have the subject observe a light source with an initial brightness of Lux0 and an initial color temperature of CCT0. The subject faces the light source in a sitting or standing position to allow the subject to adapt to the light source. During the experiment, the brightness of the light source remains constant while the color temperature of the light source is gradually changed in fixed steps, each time by 5K. After each adjustment, wait 1-2 seconds. If the subject perceives a change in the color temperature of the light source, they should actively signal it. If, during the m-th adjustment, the subject reports perceiving a change in color temperature, the color temperature value at that moment is recorded. Then, the subject's threshold for imperceptible color temperature change is between 5×(m-1) K and 5m K. Step 2: Adjust the color temperature of the light source to the initial value CCTO. The subject faces the light source in a sitting or standing position to allow the subject to adapt to the light source again. Then, directly adjust the color temperature of the light source to [CCT0 + 5 × (m-1)] K, and then increase it by 1 K each time. If the subject reports a color temperature change after the p-th adjustment, 0 < p ≤ 5 and p is an integer, then the subject's threshold for imperceptible color temperature change is determined to be [5 × (m-1) + 1 × (p-1)] K. Step 3: Perform the above experiment on q subjects to obtain q threshold data, where q≥500. Process the data using statistical methods to determine the threshold for imperceptible color temperature change. The second method for obtaining the threshold for imperceptible color temperature change includes the following steps: Step 10: In the light environment laboratory, have the subject observe a light source with an initial value of Lux0 and an initial color temperature of CCT0. The subject faces the light source in a sitting or standing position to allow the subject to adapt to the light source. During the experiment, the brightness of the light source remains constant. Starting from the initial color temperature CCT0, the color temperature of the light source is adjusted stepwise in equal increments, with a tolerance of 5K. After each adjustment, wait 1-2 seconds. If the subject perceives a change in the color temperature of the light source, they should actively signal it. If the subject does not report perceiving a change in color temperature, the color temperature of the light source is returned to CCT0 for the next adjustment. If the subject observes a change in the color temperature of the light source after the m-th adjustment, and records the color temperature value of the light source at that moment, then the subject's threshold for imperceptible color temperature change is between 5×(m-1) K and 5m K. Step 20: Adjust the color temperature of the light source to the initial value CCTO. The subject faces the light source in a sitting or standing position to allow the subject to adapt to the light source again. Adjust the color temperature of the light source step by step in equal arithmetic steps with a minimum color temperature change of [5(m-1)+1×1] K and a tolerance of 1 K. If the subject reports a color temperature change after the p-th adjustment, 0 < p ≤ 5 and p is an integer, then the subject's threshold for imperceptible color temperature change is determined to be [5×(m-1)+1×(p-1)] K. Step 30: Perform the above experiment on q subjects, where q ≥ 500, to obtain q threshold data. Process the data using statistical methods to determine a threshold for imperceptible color temperature change. The threshold for the rate of change of imperceptible brightness is obtained according to the following method, which includes the following steps: Step 100: In a light environment laboratory, have the subject observe a light source with an initial brightness of Lux0 and an initial color temperature of CCTO. The subject faces the light source in a sitting or standing position to allow the subject to adapt to the light source. During the experiment, the brightness of the light source is changed gradually in an arithmetic progression starting from the initial brightness of Lux0, with a tolerance of Lux0 × 1%. After each adjustment, wait 1-2 seconds. If the subject perceives a change in the brightness of the light source, they should actively signal it. If the subject does not signal a change in the brightness of the light source, the brightness of the light source is adjusted back to Lux0 for the next adjustment. If, during the m-th adjustment, the subject perceives a change in the brightness of the light source, the illuminance value at that moment is recorded. Then, the subject's threshold for the rate of change of brightness without perception is between [(m-1) × 1%] and m × 1%. Step 200: Adjust the illuminance of the light source to the initial value lux0. The subject faces the light source in a sitting or standing position to allow the subject to readjust to the light source. Then, adjust the brightness of the light source step by step in an arithmetic progression with a minimum brightness change rate of [(m-1)×1%+0.1%], with a tolerance of 0.1% of the current brightness. If the subject reports a change in brightness after the p-th adjustment, 0 < p ≤ 10 and p is an integer, then determine the subject's threshold for the rate of insensible brightness change as [(m-1)×1%+0.1%×(p-1)] of the current initial brightness value. Step 300: Perform the above experiment on q subjects, where q ≥ 500, to obtain q threshold data. Process these data using statistical methods to determine a threshold for the rate of change of brightness without sensory input.

5. The non-sensory lighting adjustment method according to claim 1, characterized in that: The threshold for imperceptible color temperature change is ΔCCT, where 40K≤ΔCCT≤50K.

6. The non-sensory lighting adjustment method according to claim 1, characterized in that: The threshold for the rate of change of non-sensitive brightness is ΔLux, where 3%≤ΔLux≤8%.

7. The non-sensory lighting adjustment method according to claim 1, characterized in that: Every afternoon and evening, if the color temperature of the preset outdoor light parameters is ≤α1 (2500K≤α1≤3500K), or the brightness of the preset outdoor light parameters is ≤β1 (100Lux≤β1≤500Lux), then the adjustment of the light parameters of the space to be adjusted will be stopped. The light parameters of the space to be adjusted will be kept at the value after the last adjustment and this value will be the parameter hold value until the lighting is stopped. The initial moment is defined as the moment when the lighting equipment in the space to be adjusted is first turned on each day. If the color temperature of the light parameter at the preset outdoor location at the initial moment is ≤ α1, and / or the brightness of the light parameter at the preset outdoor location at the initial moment is ≤ β1, then the light parameter of the lighting space to be adjusted is adjusted to the parameter hold value of the previous day until the color temperature of the light parameter at the preset outdoor location is > α1 and the brightness of the light parameter at the preset outdoor location is > β1, and then steps 1-4 are executed. If the color temperature of the preset outdoor light parameters at the initial moment is greater than α1 and the brightness of the preset outdoor light parameters at the initial moment is greater than β1, then the light parameters of the lighting space to be adjusted are directly set to the light parameters of the preset outdoor position at the initial moment, and then steps 1-4 are executed.

8. A non-intrusive lighting adjustment system, characterized in that: The non-intrusive lighting adjustment system includes a control system and lighting equipment, an indoor sensor group, and an outdoor sensor group, all connected to the control system. The control system is used to execute the non-intrusive lighting adjustment method according to any one of claims 1-7. The indoor sensor group is used to collect light parameters within the lighting space to be adjusted. The outdoor sensor group is used to collect light parameters at a preset outdoor location.

9. The non-sensory lighting adjustment system according to claim 8, characterized in that: The control system is also used to allow users to input and modify the threshold for imperceptible color temperature change and the threshold for imperceptible brightness change rate, as well as to allow users to import the 24-hour light change curve for each day; the control system includes an intelligent operation panel set in the space to be adjusted for lighting; the control system is also used to communicate with mobile clients and / or PCs.

10. The non-sensory lighting adjustment system according to claim 9, characterized in that: The control system can also adjust and maintain the light parameters in the space to be illuminated at specific values ​​as needed.

11. The non-intrusive lighting adjustment system according to claim 8, characterized in that: The lighting device includes a multi-channel adjustable LED engine, an LED lamp, and a multi-channel programmable intelligent LED driver; the LED lamp includes narrowband LED particles with 5-11 controllable peaks and broadband phosphor-converted white light LEDs.