A smart lamp self-adaptive dimming method and system based on lens light parameter matching

Abstract

The application discloses a kind of intelligent luminaire self-adapting dimming method and system based on lens light parameter matching, and it is related to the technical field of intelligent lighting control.The method obtains lens light parameters, light source driving state, lighting state, target lighting state and dimming response relationship set, forms current working point and selects candidate dimming response relationship;When candidate relationship is single relationship, determine effective dimming response relationship, at least two for determining common dimming interval and judging response separation position;When there is response separation position, execute identification dimming and determine effective dimming response relationship in combination with actual lighting response, when there is not, generate driving adjustment amount according to the common satisfaction result of candidate predicted lighting state to target lighting state.The application constrains dimming process by common dimming interval and first response separation position, makes driving adjustment more fit for actual lighting change of luminaire, reduces insufficient adjustment, excessive adjustment and repeated compensation.

Description

Technical Field

[0001] This invention relates to the field of intelligent lighting control technology, specifically to an intelligent luminaire adaptive dimming method and system based on lens optical parameter matching. Background Technology

[0002] Intelligent lighting fixtures typically consist of a light source, a lens, a driving circuit, and a controller. The controller changes the output of the lighting fixture by adjusting the driving parameters of the light source. The lens converges and distributes the light emitted by the light source. Different lens optical parameters will cause changes in the light source driving to correspond to different actual lighting changes.

[0003] When the luminaire is continuously dimmed, the controller determines the subsequent drive adjustment amount based on the current light source drive state and the actual lighting result. The dimming response relationship corresponding to different lens light parameters may produce similar lighting results in some working ranges. However, after the light source drive parameters are changed, the lighting change amplitude corresponding to each dimming response relationship will gradually become different, so that the current working point may correspond to multiple dimming response relationships with different subsequent responses at the same time.

[0004] The limitations of the existing technology include at least the following problems: when multiple dimming response relationships can correspond to the current operating point, directly determining the subsequent drive adjustment amount based on one of the dimming response relationships may cause a deviation between the predicted lighting change and the actual lighting change. Subsequent control needs to continue to correct around this deviation, resulting in problems such as insufficient adjustment, excessive adjustment, and an increase in the number of dimming times. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an intelligent lighting adaptive dimming method and system based on lens optical parameter matching. This method solves the problem of mismatch between subsequent drive adjustment amounts and actual lighting responses when multiple dimming response relationships corresponding to different lens optical parameters are difficult to distinguish at the current operating point.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an intelligent lighting adaptive dimming method based on lens optical parameter matching, comprising the following steps: acquiring lens optical parameters, current light source driving state, current lighting state, target lighting state, and a dimming response relationship set; forming a current working point based on the current light source driving state and current lighting state; filtering at least one candidate dimming response relationship from the dimming response relationship set based on the lens optical parameters and the current working point; determining a valid dimming response relationship when there is only one candidate dimming response relationship; and generating candidate predicted lighting states along the dimming direction corresponding to the target lighting state when there are at least two candidate dimming response relationships, and determining each candidate... The selected light response relationship ensures that the candidate predicted lighting state progresses towards the target lighting state without exceeding the common dimming range of the target lighting state. Within the common dimming range, the first response separation position where the candidate predicted lighting states change from overlap to distinguishability is determined. If a response separation position exists, an identification dimming amount is generated and executed to obtain the actual lighting response sequence and determine the effective dimming response relationship. If no response separation position exists, the driving adjustment amount is determined and executed based on the common satisfaction result of each candidate predicted lighting state with the target lighting state. If the target lighting state is not reached, the current operating point is updated and the response deduction continues. After determining the effective dimming response relationship, subsequent driving adjustment amounts are generated based on it to control the dimming of the smart luminaire.

[0007] Further, the steps for screening candidate dimming response relationships are as follows: determine the matchable dimming response relationships based on the lens light parameters; map the current working point to each matchable dimming response relationship; retain the matchable dimming response relationships where the current working point is located in the applicable working range and has an executable response segment that advances towards the target lighting state, and determine them as candidate dimming response relationships.

[0008] Furthermore, the steps for determining the common dimming zone are as follows:

[0009] Starting from the current working point, the executable driving range of each candidate dimming response relationship is determined along the dimming direction, and candidate predicted lighting states corresponding to each executable driving range are generated; let the driving position corresponding to the current working point be... The candidate dimming response relationship index set is , No. The executable drive range of the candidate dimming response relationships is , No. Candidate dimming response relationship at drive position The corresponding predicted illuminance is The illuminance of the target boundary corresponding to the dimming direction is The set of commonly allowed drive locations is determined according to the following formula. : Where the actual illuminance corresponding to the current lighting state is lower than the allowable illuminance range corresponding to the target lighting state, the target boundary illuminance is... The target boundary illuminance is defined as the illuminance at the upper boundary of the permissible illuminance range when the actual illuminance corresponding to the current lighting state exceeds the permissible illuminance range. The lower boundary of the permissible illuminance range; from the set of commonly permissible drive locations. The driving segment that extends continuously from the current working point along the dimming direction is extracted and determined as the common dimming interval.

[0010] Further, the steps for determining the response separation position are as follows: determining continuous candidate drive positions along the dimming direction within the common dimming interval; mapping each candidate drive position to each candidate dimming response relationship to generate candidate predicted lighting states; determining the continuous drive range from the current operating point where at least one pair of candidate predicted lighting states still has a response difference that does not reach the preset response separation threshold as the response overlap area; and determining the first candidate drive position after the response overlap area where the response differences between each pair of candidate predicted lighting states reach the preset response separation threshold as the response separation position.

[0011] Further, the steps for generating and executing the identification dimming amount are as follows: generate the identification dimming amount based on the drive change from the current working point to the response separation position; continuously adjust the current light source drive state according to the identification dimming amount, and obtain the actual lighting state according to the drive change sequence to form the actual lighting response sequence.

[0012] Furthermore, the steps for determining the drive adjustment amount when there is no response separation position are as follows: Analyze the candidate predicted lighting states corresponding to the candidate dimming response relationships within the common dimming interval; determine the common target drive interval that makes each candidate predicted lighting state satisfy the target lighting state; when a common target drive interval exists, determine the drive position that first enters the interval along the dimming direction as the execution drive position; when it does not exist, determine the end of the common dimming interval as the execution drive position; determine the drive adjustment amount based on the drive change from the drive position corresponding to the current operating point to the execution drive position.

[0013] Further, the steps for determining effective dimming response relationships are as follows: Generate candidate predicted lighting response sequences based on the identified dimming amount corresponding to the drive changes and each candidate dimming response relationship; Match the actual lighting response sequence with each candidate predicted lighting response sequence according to the same drive change position; retain candidate dimming response relationships where the response differences at each drive change position are all within the preset response range; determine a single relationship as an effective dimming response relationship when the retained result is single; update the current operating point and re-determine the common dimming interval and response separation position when the retained result is at least two; update the current operating point and re-screen candidate dimming response relationships when the retained result is empty.

[0014] Furthermore, the steps for continuous verification of the effective dimming response relationship are as follows: generate the next drive adjustment amount and the corresponding predicted lighting state based on the effective dimming response relationship and the current operating point; execute the next drive adjustment amount to obtain the new actual lighting state and form a new operating point; determine the response difference between the new actual lighting state and the predicted lighting state; when the response difference is within the preset response range, continue to generate the drive adjustment amount along the effective dimming response relationship; when it exceeds the range, determine that the effective dimming response relationship is mismatched.

[0015] Further, the steps after the effective dimming response relationship mismatch are as follows: When the response difference between the current actual lighting state and the predicted lighting state corresponding to the effective dimming response relationship exceeds the preset response range, the working point where the most recent response difference was within the preset response range is determined as the relationship reconstruction starting point; the actual driving change and actual lighting response from the relationship reconstruction starting point to the current actual working point are extracted to form the response segment to be reconstructed; candidate dimming response relationships are re-screened according to the relationship reconstruction starting point and lens light parameters, and the actual driving change of the response segment to be reconstructed is mapped to each candidate dimming response relationship to generate the reconstructed predicted response segment; candidate dimming response relationships where the response difference between the reconstructed predicted response segment and the response segment to be reconstructed at the same driving change position is within the preset response range are retained; the current actual working point is used as the updated current working point, and when the retained result is a single relationship, it is determined as a new effective dimming response relationship; when the retained result is at least two, the common dimming interval and response separation position are re-determined; when the retained result is empty, candidate dimming response relationships are re-screened.

[0016] An intelligent luminaire adaptive dimming system based on lens optical parameter matching includes: a candidate relationship determination module for forming the current operating point and filtering and reconstructing candidate dimming response relationships; a dimming interval determination module for response deduction and determining the common dimming interval and response separation position; a dimming identification module for generating the identified dimming amount and forming the actual lighting response sequence; a response relationship determination module for determining the effective dimming response relationship based on the actual lighting response sequence and performing continuous verification; and a dimming control module for generating the driving adjustment amount and controlling the dimming of the intelligent luminaire.

[0017] The present invention has the following beneficial effects:

[0018] (1) The intelligent luminaire adaptive dimming method based on lens optical parameter matching combines the lens optical parameters and the current working point to screen candidate dimming response relationships, and deduces the lighting changes of each candidate relationship along the dimming direction corresponding to the target lighting state. The driving range of each candidate relationship that can advance the lighting state towards the target without exceeding the target state is extracted as a common dimming range. This allows the luminaire to perform adjustment along the driving range that is allowed by each candidate relationship before the specific dimming response relationship is determined, reducing the deviation of driving adjustment amount and excessive adjustment caused by selecting a single dimming response relationship too early.

[0019] (2) The intelligent lighting adaptive dimming method based on lens light parameter matching analyzes the changes in the candidate predicted lighting state within the common dimming interval, determines the first response separation position where the candidate response changes from overlap to distinguishability, and generates the identification dimming amount from the current working point to that position, so that the identification action is consistent with the target lighting direction. During the execution process, the actual lighting response sequence is formed and corresponds to the candidate predicted lighting response sequence position by position. Candidate relationships that do not match the real response can be screened out from the actual dimming process, reducing additional trial dimming and repeated compensation.

[0020] (3) The intelligent lighting adaptive dimming method based on lens light parameter matching continuously verifies the difference between the actual lighting state and the predicted lighting state by verifying the effective dimming response relationship. When the response is within the preset corresponding range, it continues to generate the driving adjustment amount along the effective relationship. When a mismatch occurs, it extracts the actual driving change and the actual lighting response from the working point that most recently meets the corresponding range of the response to form a response segment to be reconstructed, and re-screens the candidate dimming response relationship so that the dimming response relationship can be reconfirmed with the actual adjustment process, reducing the accumulation of deviation caused by continuing to adjust along the wrong response relationship after the relationship mismatch.

[0021] (4) The intelligent luminaire adaptive dimming system based on lens light parameter matching completes the current working point formation, candidate relationship screening, common dimming range determination, response separation position judgment, dimming execution, effective relationship confirmation and drive adjustment amount generation in sequence through the candidate relationship determination module, dimming range determination module, dimming identification module, response relationship determination module and dimming control module. When the effective dimming response relationship is mismatched, the candidate dimming response relationship is re-screened and the drive adjustment amount is determined again, so that the relationship screening, actual response verification and luminaire drive control form a closed process, reducing the dimming judgment deviation caused by the disconnect of each processing link.

[0022] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0023] Figure 1 This is a flowchart of an intelligent lighting adaptive dimming method based on lens optical parameter matching according to the present invention.

[0024] Figure 2 This is a block diagram of an intelligent lighting adaptive dimming system based on lens optical parameter matching according to the present invention. Detailed Implementation

[0025] Please see Figure 1This invention provides a technical solution: an intelligent lighting adaptive dimming method based on lens optical parameter matching, comprising the following steps: acquiring lens optical parameters, current light source driving state, current lighting state, target lighting state, and a dimming response relationship set; forming a current operating point based on the current light source driving state and current lighting state; filtering at least one candidate dimming response relationship from the dimming response relationship set based on the lens optical parameters and the current operating point; determining a valid dimming response relationship when there is only one candidate dimming response relationship; and generating candidate predicted lighting states along the dimming direction corresponding to the target lighting state when there are at least two candidate dimming response relationships, and determining the dimming response of each candidate dimming response relationship. The response relationship ensures that the candidate predicted lighting state progresses towards the target lighting state without exceeding the common dimming range of the target lighting state. Within the common dimming range, the first response separation position where the candidate predicted lighting states change from overlap to distinguishability is determined. If a response separation position exists, an identification dimming amount is generated and executed to obtain the actual lighting response sequence and determine the effective dimming response relationship. If no response separation position exists, the driving adjustment amount is determined and executed based on the common satisfaction result of each candidate predicted lighting state with the target lighting state. If the target lighting state is not reached, the current operating point is updated and the response deduction continues. After determining the effective dimming response relationship, subsequent driving adjustment amounts are generated based on it, and the dimming of the smart luminaire is controlled.

[0026] The lens optical parameters are obtained by associating the lens identifier with the corresponding lens parameter record in the lamp assembly record. The lens parameter record is formed by lens transmission test and lamp light distribution test, including transmittance, light emission angle and normalized light intensity sequence corresponding to the light distribution curve. The light distribution test program sets a fixed angle sampling position. The same angle sampling position is used when establishing the dimming response relationship and reading the current lens optical parameters. The maximum light intensity in the light distribution curve is used as the normalization reference. The light intensity obtained from each angle sampling position is normalized relative to the normalization reference and then arranged in the angle order to form a normalized light intensity sequence.

[0027] The current light source driving status is represented by the actual driving control quantity fed back by the light source driving controller. The driving control quantity is one of PWM duty cycle, constant current driving current or driving power according to the driving method of the lamp. The same driving control quantity and corresponding representation method are used in the same dimming process, and the increase of the driving control quantity value corresponds to the increase of the light source output.

[0028] The current lighting status is represented by the actual illuminance obtained from a fixed detection position in the target lighting area. The current working point is formed by the current actual drive control quantity and the current actual illuminance under the same dimming state.

[0029] The target lighting state is determined by the target illuminance setpoint and the allowable illuminance range. The target illuminance setpoint is obtained by the luminaire control command and is within the allowable illuminance range. The allowable illuminance range is pre-recorded in the controller according to the luminaire lighting requirements. When the actual illuminance enters the allowable illuminance range, the target lighting state is determined to be reached.

[0030] The target boundary illuminance is determined based on the position of the current actual illuminance relative to the allowable illuminance range. When the current actual illuminance is lower than the allowable illuminance range, the upper boundary of the allowable illuminance range is taken; when the current actual illuminance is higher than the allowable illuminance range, the lower boundary of the allowable illuminance range is taken.

[0031] The dimming response relationship set is pre-stored in the luminaire controller. Each dimming response relationship records the applicable lens light parameter range, applicable working range, and the correspondence between the drive control quantity and the predicted illuminance.

[0032] When establishing the dimming response relationship, the drive control quantity is changed under the corresponding lens installation state and the actual illuminance corresponding to each calibrated drive position is recorded. A corresponding curve is established based on the calibrated drive position and the actual illuminance, and the predicted illuminance between adjacent calibrated drive positions is determined by piecewise interpolation.

[0033] The applicable lens optical parameter range is formed by the upper and lower boundaries of the measured parameters obtained from the transmission test and light distribution test of the same specification lens sample. The applicable working range is determined by the calibrated drive control range and the corresponding illuminance range. The dimming response relationship is only used for response deduction within its applicable working range.

[0034] The minimum executable control step size of the drive controller is determined by the control resolution of the drive controller;

[0035] The illuminance sampling duration is determined and recorded in the controller based on the response time after the light source driving state changes and the output cycle of the illuminance sensor. Illuminance data is continuously acquired according to the illuminance sampling duration after each driving adjustment is completed.

[0036] The operational fluctuation range is determined during the dimming response relationship calibration process. Illuminance is continuously obtained at each calibration drive position according to the illuminance sampling duration. The difference between the maximum and minimum illuminance within the corresponding sampling period is calculated, and the maximum record among the differences obtained at each calibration drive position is determined as the operational fluctuation range.

[0037] In actual dimming, if the difference between the maximum and minimum illuminance during the sampling period does not exceed the operational fluctuation range, the average illuminance during that sampling period is used as the actual illuminance at the corresponding drive position. If the difference exceeds the operational fluctuation range, the current sampling period is discarded and the illuminance data for the next sampling period is obtained.

[0038] The preset response range is used to determine whether the actual illuminance matches the predicted illuminance corresponding to the dimming response relationship. The upper boundary of the range is determined by the sum of the maximum difference between the predicted illuminance and the measured illuminance during the dimming response relationship calibration process, the fluctuation range of operation, and the illuminance error converted from the allowable measurement error of the illuminance sensor. When the absolute value of the difference between the actual illuminance and the predicted illuminance does not exceed the upper boundary of the range, it is determined to be within the preset response range.

[0039] The preset response separation threshold is used to determine whether the predicted illuminance corresponding to different candidate dimming response relationships can be distinguished under the current illuminance detection conditions. During the luminaire calibration process, for each pair of dimming response relationships that can simultaneously correspond to the same working point, the actual illuminance is repeatedly obtained at the commonly applicable drive position. The repeated sampling results form the corresponding measured illuminance interval, and the minimum predicted illuminance difference corresponding to the actual illuminance intervals of the two dimming response relationships is determined. The maximum value among the minimum predicted illuminance differences obtained for each dimming response relationship pair is determined as the preset response separation threshold.

[0040] Specifically, the steps for screening candidate dimming response relationships are as follows:

[0041] The matching dimming response relationship is determined based on the lens optical parameters, specifically as follows:

[0042] Read the transmittance, light emission angle, and normalized luminous intensity sequence corresponding to the current luminaire. Assign the transmittance and light emission angle to the applicable lens light parameter range of each dimming response relationship record, and assign the normalized luminous intensity sequence item by item according to the fixed angle sampling position. When the transmittance, light emission angle, and normalized luminous intensity sequence are all within the applicable range of the corresponding dimming response relationship record, the corresponding dimming response relationship is determined as a matchable dimming response relationship.

[0043] The current operating point is mapped to each matching dimming response relationship, specifically as follows:

[0044] The current operating point is formed by using the current actual drive control value and the corresponding actual illuminance. The current actual drive control value is then input into each matchable dimming response relationship, and the response difference of the current operating point relative to each matchable dimming response relationship is calculated according to the following formula:

[0045] ;

[0046] In the formula, Indicates the current working point relative to the first The difference in response to the dimming response relationship. Indicates the dimming response relationship index. This indicates the current actual drive control quantity. Indicates the current actual illuminance. Indicates the first Drive control quantity in dimming response relationship The corresponding predicted illuminance function;

[0047] When the current working point is located within the applicable working range of the corresponding dimming response relationship and the response difference is within the preset response range, it is determined that the current working point can correspond to the dimming response relationship.

[0048] Matchable dimming response relationships that are currently located within the applicable working range and have executable response segments that advance towards the target lighting state are retained and identified as candidate dimming response relationships. Specifically:

[0049] When the current actual illuminance is lower than the allowable illuminance range, the direction of increasing the drive control quantity is determined as the dimming direction; when the current actual illuminance is higher than the allowable illuminance range, the direction of decreasing the drive control quantity is determined as the dimming direction.

[0050] Starting from the current actual drive control quantity, read each matchable dimming response relationship along the dimming direction. If there is a drive segment that is continuously connected to the current working point, and the predicted illuminance continues to approach the allowable illuminance range with the change of drive position before entering the allowable illuminance range, and does not exceed the target boundary illuminance after entering the allowable illuminance range, and both the corresponding drive control quantity and the predicted illuminance are within the applicable working range of the dimming response relationship, then the drive segment is determined as an executable response segment, and the corresponding matchable dimming response relationship is determined as a candidate dimming response relationship.

[0051] If no candidate dimming response relationship is found, maintain the current driving state and end this automatic dimming.

[0052] In one implementation, when several dimming response relationships corresponding to the current lens optical parameters can all explain the current operating point, the dimming response relationship that satisfies the requirements of the current operating point and dimming direction is retained to participate in the response deduction, and the dimming response relationship is not directly selected according to the single response difference at the current operating point.

[0053] Specifically, the steps to determine the common dimming zone are as follows:

[0054] Starting from the current operating point, the executable driving range of each candidate dimming response relationship is determined along the dimming direction, specifically as follows:

[0055] Starting from the current actual drive control value, drive positions are obtained sequentially along the dimming direction according to the minimum executable control step size. Drive positions where both the drive control value and the corresponding predicted illuminance are within the applicable working range of the candidate dimming response relationship are retained. Before the predicted illuminance enters the allowable illuminance range, the predicted illuminance is kept to continuously approach the allowable illuminance range as the drive position changes. After entering the allowable illuminance range, drive positions that have not exceeded the target boundary illuminance are retained. The drive positions that are continuously connected to the current actual drive control value form the executable drive range of the corresponding candidate dimming response relationship.

[0056] The candidate predicted lighting states corresponding to each executable drive range are generated as follows:

[0057] The drive positions within the executable drive range are sequentially input into the corresponding candidate dimming response relationships to obtain the predicted illuminance corresponding to each drive position. The drive position and the predicted illuminance are used together as candidate predicted lighting states, and the correspondence between the candidate predicted lighting states and the candidate dimming response relationships is saved.

[0058] The dimming response relationship of each candidate is preserved so that the candidate predicted lighting state advances toward the target lighting state without exceeding the overlapping driving range of the target lighting state. Specifically:

[0059] Let the illuminance of the target boundary be denoted as... The current candidate dimming response relationship index set is denoted as , No. The executable drive range of the candidate dimming response relationship is denoted as The set of commonly allowed drive locations is determined according to the following formula. :

[0060] ;

[0061] In the formula, This represents the set of drive locations that are collectively allowed to be executed by all candidate dimming response relationships. This represents the current set of candidate dimming response relationship indices. Indicates the first The executable driver range for each candidate dimming response relationship. This indicates the target boundary illuminance along the current dimming direction;

[0062] Each candidate dimming response relationship uses the predicted illuminance corresponding to the current actual drive control quantity as the starting point for its own response deduction, so that the predicted illuminance corresponding to the retained drive position is between the predicted illuminance at this starting point and the target boundary illuminance.

[0063] The overlapping drive range extending continuously from the current operating point is defined as the common dimming interval, specifically:

[0064] From the set of commonly allowed drive positions, the drive positions are read along the dimming direction starting from the current actual drive control quantity. The drive segments that can be continuously reached according to the minimum executable control step size and have no excluded positions in between are determined as the common dimming interval. Drive positions that are not continuous with the current actual drive control quantity are not included in the common dimming interval.

[0065] If the set of jointly allowed drive positions is empty, or if the common dimming interval only contains the current actual drive control quantity and there are no new executable drive positions, maintain the current drive state and end this automatic dimming.

[0066] Specifically, the steps to determine the response separation location are as follows:

[0067] Within the common dimming range, consecutive candidate drive positions are determined along the dimming direction, specifically as follows:

[0068] Starting from the current actual drive control quantity, drive positions within the common dimming range are obtained sequentially along the dimming direction according to the minimum executable control step size, and then arranged in the drive execution order to form consecutive candidate drive positions.

[0069] By mapping each candidate driving position to each candidate dimming response relationship, candidate predicted lighting states are generated, specifically as follows:

[0070] Input the same candidate drive position into each candidate dimming response relationship to obtain the predicted illuminance corresponding to each candidate dimming response relationship, and save each predicted illuminance according to the candidate drive position.

[0071] The continuous driving range from the current operating point where there is still at least one pair of candidate predicted lighting states whose response difference does not reach the preset response separation threshold is defined as the response overlap region, specifically:

[0072] Starting from the current working point, the predicted illuminance of each candidate dimming response relationship is compared position by position along the candidate drive position arrangement. If the difference in predicted illuminance between at least two candidate dimming response relationships at the same candidate drive position does not reach the preset response separation threshold, the corresponding candidate drive position is included in the response overlap area. Drive positions that continuously meet this condition form the response overlap area.

[0073] The candidate driving position where the response difference between each pair of candidate predicted lighting states after the response overlap region reaches a preset response separation threshold is determined as the response separation position. Specifically:

[0074] Let the first one be arranged in the dimming direction within the common dimming zone. The number of candidate driving positions is The preset response separation threshold is The response separation location is determined according to the following formula:

[0075] ;

[0076] In the formula, This indicates the drive control quantity corresponding to the separation position. Indicates the first Candidate driving positions This indicates the sequential index of the candidate drive positions arranged according to the dimming direction. Indicates another candidate dimming response relationship index. Indicates the preset response separation threshold;

[0077] When there are candidate drive positions that meet the formula conditions within the common dimming interval, the candidate drive position that appears first along the dimming direction is determined as the response separation position. When there are no candidate drive positions that meet the formula conditions within the common dimming interval, it is determined that there is no response separation position.

[0078] In one implementation, the predicted illuminances corresponding to candidate dimming response relationships near the current operating point are close to each other. As the drive control quantity changes along the dimming direction, the predicted illuminances corresponding to each candidate dimming response relationship gradually form differences that can be distinguished by the current illuminance detection conditions. The first drive position that meets the response separation condition is used to perform identification dimming, so that the identification action is completed along the dimming direction corresponding to the target lighting state.

[0079] Specifically, the steps for generating and executing the dimming amount are as follows:

[0080] The dimming amount is generated based on the drive change from the current working point to the response separation position, specifically as follows:

[0081] Read the current actual drive control quantity and the drive control quantity corresponding to the response separation position, and determine the dimming quantity based on the drive change along the dimming direction between the two. The dimming quantity is identified using the unit and representation of the current drive control quantity.

[0082] The current light source driving state is continuously adjusted according to the identified dimming amount, and the actual lighting state is obtained according to the driving change sequence to form an actual lighting response sequence, which is as follows:

[0083] Starting from the current actual drive control quantity, the dimming quantity is identified and executed step by step according to the minimum executable control step. After reaching each drive position, the current drive output is maintained and the corresponding actual illuminance is obtained. The actual drive control quantity fed back by the light source drive controller and the actual illuminance are recorded in pairs until the response separation position is reached. The actual drive control quantities and the corresponding actual illuminance are arranged in the execution order to form the actual lighting response sequence.

[0084] Specifically, the steps for determining the drive adjustment amount when there is no response separation position are as follows:

[0085] The analysis of candidate predicted lighting states corresponding to the candidate dimming response relationships within the common dimming range is as follows:

[0086] Read the predicted illuminance corresponding to each candidate dimming response relationship according to the arrangement order of candidate drive positions within the common dimming interval, and determine whether each predicted illuminance enters the allowable illuminance range of the target lighting state.

[0087] The common target-driven interval that ensures all candidate predicted lighting states satisfy the target lighting state is determined as follows:

[0088] The results of each candidate predicted illuminance entering the allowable illuminance range are matched according to the driving position. When all candidate predicted illuminances corresponding to the same driving position enter the allowable illuminance range, the corresponding driving position is retained. The driving positions that are continuously retained along the dimming direction form a common target driving interval.

[0089] When a common target driving range exists, the driving position that first enters the range along the dimming direction is determined as the execution driving position, specifically as follows:

[0090] Starting from the current actual drive control quantity, read the common target drive interval along the dimming direction, and determine the first common target drive interval entry position as the execution drive position.

[0091] If it does not exist, the end of the common dimming zone will be determined as the execution drive position, specifically as follows:

[0092] When the common target drive interval is empty, read the common dimming interval along the dimming direction and determine the executable drive position at the end of the common dimming interval as the execution drive position.

[0093] The drive adjustment amount is determined based on the drive change from the current working point to the execution drive position, specifically as follows:

[0094] The drive adjustment amount is determined based on the change along the dimming direction between the current actual drive control amount and the drive control amount corresponding to the drive position. The drive adjustment amount is sent to the light source drive controller and executed. After execution, the actual drive control amount and the corresponding actual illuminance fed back by the light source drive controller are obtained to form a new current working point.

[0095] The dimming process ends when the actual illuminance falls within the permissible illuminance range. If the actual illuminance does not fall within the permissible illuminance range, the process continues to screen candidate dimming response relationships and perform response deduction at the new current operating point.

[0096] Specifically, the steps to determine the effective dimming response relationship are as follows:

[0097] Based on the identified dimming amount and the relationship between each candidate dimming response, a candidate predicted lighting response sequence is generated, specifically as follows:

[0098] Read the actual drive control quantities recorded during the dimming process, input each actual drive control quantity into each candidate dimming response relationship, obtain the corresponding predicted illuminance, and form the candidate predicted lighting response sequence corresponding to each candidate dimming response relationship according to the execution order of the actual drive control quantities.

[0099] The actual lighting response sequence is mapped to each candidate predicted lighting response sequence according to the same driving change position, specifically as follows:

[0100] Using the actual drive control quantity fed back by the light source drive controller as the corresponding position, the actual illuminance corresponding to each actual drive position is correlated with the predicted illuminance corresponding to each candidate dimming response at the same actual drive position.

[0101] The candidate dimming response relationships are retained such that the response differences at each drive change position are all within the preset response range. Specifically:

[0102] Let the number of actual drive positions recorded during the dimming process be . , No. The actual drive control quantity corresponding to each actual drive position is The corresponding actual illuminance is The maximum response difference of each candidate dimming response relationship during the dimming identification process is calculated according to the following formula:

[0103] ;

[0104] In the formula, Indicates the first The candidate dimming response relationships are used to identify the maximum response difference during the dimming process. Indicates the position index in the actual lighting response sequence. This indicates the number of actual driving positions contained in the actual lighting response sequence. Indicates the first The actual drive control quantity corresponding to each actual drive position This indicates the corresponding actual illuminance;

[0105] When the maximum response difference is within the preset response range, the corresponding candidate dimming response relationship is retained; when it exceeds the preset response range, the corresponding candidate dimming response relationship is discarded.

[0106] When the retained result is a single relationship, it is determined as a valid dimming response relationship; when the retained result is at least two, the current operating point is updated and the common dimming interval and response separation position are redefined; when the retained result is empty, the current operating point is updated and candidate dimming response relationships are re-screened, specifically as follows:

[0107] After dimming identification is completed, the actual drive control quantity at the end and the corresponding actual illuminance are used to form a new current working point. If the result is a single candidate dimming response relationship, it is determined as a valid dimming response relationship. If the result is at least two candidate dimming response relationships, the new current working point is used as the starting point for response deduction. The common dimming range and response separation position are re-determined for the retained candidate dimming response relationships.

[0108] If the result is empty, the candidate dimming response relationship is re-selected based on the new current working point and lens light parameters. If a single candidate dimming response relationship is obtained after re-selection, it is determined as a valid dimming response relationship. If at least two candidate dimming response relationships are obtained after re-selection, the common dimming range and response separation position are re-determined. If the result of re-selection is empty, the current driving state is maintained and the current automatic dimming is ended.

[0109] Specifically, the steps for continuous verification of effective dimming response relationship are as follows:

[0110] Based on the effective dimming response relationship and the current operating point, the next drive adjustment amount and the corresponding predicted lighting state are generated, specifically as follows:

[0111] Starting from the current actual drive control quantity, the predicted illuminance is read along the dimming direction within the applicable working range of the effective dimming response relationship. When there is a drive position where the predicted illuminance enters the allowable illuminance range of the target lighting state, the drive position that first enters the allowable illuminance range along the dimming direction is determined as the next drive position.

[0112] If there is no drive position that can enter the allowable illuminance range, but there is still a continuous executable drive segment after the current actual drive control value where the predicted illuminance approaches the target illuminance set value, the end of the drive segment is determined as the next drive position.

[0113] If no new executable drive position exists, candidate dimming response relationships with executable response segments that advance towards the target lighting state are re-screened based on the current operating point and lens light parameters. If the screening result is a single candidate dimming response relationship, it is determined as a new valid dimming response relationship. If the screening result is at least two candidate dimming response relationships, the common dimming interval and response separation position are re-determined. If the screening result is empty, the current drive state is maintained and the current automatic dimming ends.

[0114] After determining the next drive position, the next drive adjustment amount is generated based on the drive change between the next drive position and the current actual drive control amount, and the predicted illuminance corresponding to the next drive position is obtained.

[0115] Execute the next drive adjustment, obtain the new actual lighting state, and form a new operating point, specifically as follows:

[0116] The next drive adjustment is sent to the light source drive controller. After execution, the actual drive control quantity and corresponding actual illuminance are obtained from the light source drive controller. The actual drive control quantity and actual illuminance are then used to form a new operating point.

[0117] The difference in response between the new actual lighting state and the predicted lighting state is determined as follows:

[0118] The actual drive control quantity corresponding to the new operating point is input into the effective dimming response relationship to obtain the predicted illuminance. The absolute value of the difference between the new actual illuminance and the predicted illuminance is calculated to obtain the current response difference.

[0119] When the response difference is within the preset response range, the driving adjustment amount continues to be generated along the effective dimming response relationship; when it exceeds the range, the effective dimming response relationship is determined to be mismatched, specifically as follows:

[0120] When the current response difference is within the preset response range, the effective dimming response relationship is retained, and the current working point is updated with a new working point. When the actual illuminance enters the allowable illuminance range, the dimming ends. When the actual illuminance has not yet entered the allowable illuminance range, the drive adjustment amount continues to be generated.

[0121] When the current response difference exceeds the preset response range, stop using the current effective dimming response relationship to generate the drive adjustment amount, and determine the new working point as the current actual working point, and enter the effective dimming response relationship mismatch processing.

[0122] Specifically, the steps after effective dimming response mismatch are as follows:

[0123] When the difference between the current actual lighting state and the predicted lighting state corresponding to the effective dimming response exceeds the preset response range, the working point where the most recent response difference was within the preset response range is determined as the starting point for relationship reconstruction. Specifically:

[0124] Following the order of working points saved during this dimming process, search backwards from the current actual working point and determine the working point that is closest to the current actual working point and whose response difference is within the preset response range as the starting point for relation reconstruction.

[0125] When the effective dimming response relationship is determined by the dimming identification and a mismatch occurs during the first execution of subsequent drive adjustments, the operating point corresponding to the end of the actual lighting response sequence is determined as the starting point for relationship reconstruction.

[0126] When the effective dimming response relationship is directly determined by a single candidate dimming response relationship and a mismatch occurs during the first execution of subsequent driving adjustments, the current operating point at which the effective dimming response relationship was determined is set as the starting point for relationship reconstruction.

[0127] Extract the actual driving changes and actual lighting response from the starting point of relationship reconstruction to the current actual working point to form the response segment to be reconstructed, which is as follows:

[0128] Extract the actual drive control quantities and corresponding actual illuminance recorded between the starting point of relation reconstruction and the current actual working point according to the actual execution order, and arrange each actual drive control quantity and corresponding actual illuminance according to the execution order to form a response segment to be reconstructed.

[0129] Based on the relationship reconstruction starting point and lens optical parameters, candidate dimming response relationships are re-selected. The actual driving changes of the response segment to be reconstructed are mapped to each candidate dimming response relationship to generate a reconstructed predicted response segment, which is as follows:

[0130] The actual driving control quantity and actual illuminance corresponding to the relationship reconstruction starting point are used to form the reconstruction working point. Candidate dimming response relationships are screened from the dimming response relationship set based on the lens optical parameters and the reconstruction working point.

[0131] Check the actual working points in the response segment to be reconstructed one by one. When the actual drive control quantity and the corresponding actual illuminance contained in the response segment to be reconstructed are both within the applicable working range of the candidate dimming response relationship, retain the candidate dimming response relationship. If there are actual working points that exceed the corresponding applicable working range, remove the corresponding candidate dimming response relationship.

[0132] The actual drive control quantities in the response segment to be reconstructed are sequentially input into the retained candidate dimming response relationship to obtain the predicted illuminance corresponding to each actual drive position, and the reconstructed prediction response segment is formed according to the actual execution order.

[0133] The candidate dimming response relationship is retained when the response difference between the reconstructed predicted response segment and the response segment to be reconstructed is within the preset response range at the same driving change position. Specifically:

[0134] The predicted illuminance and actual illuminance in the predicted response segment are reconstructed position by position according to the actual drive control quantity in the response segment to be reconstructed. When the response difference corresponding to all actual drive positions is within the preset response range, the corresponding candidate dimming response relationship is retained. When the response difference corresponding to an actual drive position exceeds the preset response range, the corresponding candidate dimming response relationship is eliminated.

[0135] Using the current actual working point as the updated current working point, if the retained result is a single relationship, it is determined as a new valid dimming response relationship; if the retained result is at least two, the common dimming range and response separation position are re-determined; if the retained result is empty, candidate dimming response relationships are re-screened, specifically as follows:

[0136] The current working point is updated with the actual drive control quantity and actual illuminance corresponding to the current actual working point. When the reconstruction and screening result is a single candidate dimming response relationship, it is determined as a new effective dimming response relationship. The updated current working point is used as the starting point for subsequent drive adjustment, and the luminaire maintains the current actual drive state.

[0137] When the reconstruction screening result is at least two candidate dimming response relationships, the updated current working point is used as the starting point for response deduction, and the common dimming range and response separation position are re-determined for the retained candidate dimming response relationships.

[0138] When the reconstructed filtering result is empty, the candidate dimming response relationship is re-filtered from the dimming response relationship set according to the updated current working point and lens light parameters. When a single candidate dimming response relationship is obtained through re-filtering, it is determined as a new effective dimming response relationship. When at least two candidate dimming response relationships are obtained through re-filtering, the common dimming interval and response separation position are re-determined. When the re-filter result is empty, the current driving state is maintained and the current automatic dimming ends.

[0139] Please see Figure 2 This invention provides a technical solution: an intelligent lighting adaptive dimming system based on lens optical parameter matching, comprising: a candidate relationship determination module for forming a current working point and filtering and reconstructing candidate dimming response relationships; a dimming interval determination module for response deduction and determining a common dimming interval and response separation position; a dimming identification module for generating an identification dimming amount and forming an actual lighting response sequence; a response relationship determination module for determining an effective dimming response relationship based on the actual lighting response sequence and performing continuous verification; and a dimming control module for generating a drive adjustment amount and controlling the dimming of the intelligent lighting fixture.

[0140] Among them, the candidate relationship determination module obtains the lens optical parameters, the current actual drive control quantity, the current actual illuminance and the dimming response relationship set, forms the current working point and filters candidate dimming response relationships. When the effective dimming response relationship is mismatched, the candidate dimming response relationship is re-filtered according to the relationship reconstruction starting point and the response segment to be reconstructed.

[0141] The dimming interval determination module receives candidate dimming response relationships, the current operating point and the target lighting state, generates candidate predicted lighting states and determines the common dimming interval and response separation position;

[0142] The identification dimming module generates an identification dimming amount based on the current actual drive control quantity and the response separation position, controls the changes in the light source drive state, and forms an actual lighting response sequence according to the execution order.

[0143] The response relationship determination module matches the actual lighting response sequence with the candidate predicted lighting response sequence according to the actual driving position, determines the effective dimming response relationship, and compares the actual illuminance with the predicted illuminance when the effective dimming response relationship is used for subsequent driving adjustment.

[0144] The dimming control module generates a drive adjustment amount based on the effective dimming response relationship or the execution drive position determined when there is no response separation position, and sends the drive adjustment amount to the light source driver controller.

[0145] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0146] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A smart luminaire adaptive dimming method based on lens optical parameter matching, characterized in that, Includes the following steps: Acquire the lens optical parameters, current light source driving state, current illumination state, target illumination state, and dimming response relationship set, and form the current working point based on the current light source driving state and current illumination state; Based on the lens optical parameters and the current operating point, at least one candidate dimming response relationship is selected from the dimming response relationship set. When the candidate dimming response relationship is a single relationship, it is determined to be a valid dimming response relationship. When there are at least two candidate dimming response relationships, a candidate predicted lighting state is generated along the dimming direction corresponding to the target lighting state. It is determined that each candidate dimming response relationship advances the candidate predicted lighting state toward the target lighting state without crossing the common dimming range of the target lighting state. Within the common dimming range, determine the first response separation position where the candidate predicted lighting state changes from overlap to distinguishability. If a response separation position exists, generate and execute the identification dimming amount, obtain the actual lighting response sequence, and determine the effective dimming response relationship. When there is no response separation position, the driving adjustment amount is determined and executed based on the common satisfaction result of each candidate predicted lighting state with the target lighting state. If the target lighting state is not reached, the current operating point is updated and the response simulation continues. After determining the effective dimming response relationship, the subsequent drive adjustment amount is generated based on it to control the dimming of the smart lamps.

2. The intelligent luminaire adaptive dimming method based on lens optical parameter matching according to claim 1, characterized in that, The steps for screening candidate dimming response relationships are as follows: Determine the matching dimming response relationship based on the lens optical parameters; Map the current operating point to each matching dimming response relationship; The matching dimming response relationships that are currently located within the applicable working range and have an executable response segment that advances toward the target lighting state are retained and identified as candidate dimming response relationships.

3. The intelligent luminaire adaptive dimming method based on lens optical parameter matching according to claim 1, characterized in that, The steps to determine the common dimming zone are as follows: Starting from the current working point, determine the executable driving range of each candidate dimming response relationship along the dimming direction, and generate the candidate predicted lighting state corresponding to each executable driving range. Let the driving position corresponding to the current working point be The candidate dimming response relationship index set is , No. The executable drive range of the candidate dimming response relationships is , No. Candidate dimming response relationship at drive position The corresponding predicted illuminance is The illuminance of the target boundary corresponding to the dimming direction is The set of commonly allowed drive locations is determined according to the following formula. : ； Wherein, when the actual illuminance corresponding to the current lighting state is lower than the allowable illuminance range corresponding to the target lighting state, the target boundary illuminance... The target boundary illuminance is defined as the illuminance at the upper boundary of the permissible illuminance range when the actual illuminance corresponding to the current lighting state exceeds the permissible illuminance range. This is the lower boundary of the permissible illuminance range; From the set of commonly allowed execution drive locations The driving segment that extends continuously from the current working point along the dimming direction is extracted and determined as the common dimming interval.

4. The intelligent luminaire adaptive dimming method based on lens optical parameter matching according to claim 1, characterized in that, The steps to determine the response separation location are as follows: Within the common dimming range, determine consecutive candidate drive positions along the dimming direction; By mapping each candidate driving position to each candidate dimming response relationship, candidate predicted lighting states are generated. The continuous driving range from the current operating point where there is still at least one pair of candidate predicted lighting states whose response difference does not reach the preset response separation threshold is defined as the response overlap zone. The candidate driving position after the response overlap area, where the response difference between each pair of candidate predicted lighting states reaches the preset response separation threshold, is determined as the response separation position.

5. The intelligent luminaire adaptive dimming method based on lens optical parameter matching according to claim 1, characterized in that, The steps for generating and executing the dimming amount are as follows: The dimming amount is generated based on the driving change from the current working point to the response separation position; The current light source driving state is continuously adjusted according to the identified dimming amount, and the actual lighting state is obtained according to the driving change sequence to form an actual lighting response sequence.

6. The intelligent luminaire adaptive dimming method based on lens optical parameter matching according to claim 1, characterized in that, The steps for determining the drive adjustment amount when there is no response separation position are as follows: Analyze the candidate predicted lighting states corresponding to the candidate dimming response relationships within the common dimming range; Determine the common target driving interval that makes all candidate predicted lighting states satisfy the target lighting state; When there is a common target driving range, the driving position that first enters the range along the dimming direction is determined as the driving position to be executed. If it does not exist, the end of the common dimming zone will be determined as the execution drive position; The drive adjustment amount is determined based on the drive change from the current working point to the execution drive position.

7. The intelligent luminaire adaptive dimming method based on lens optical parameter matching according to claim 1, characterized in that, The steps to determine the effective dimming response relationship are as follows: A candidate predicted lighting response sequence is generated based on the driving changes corresponding to the identified dimming amount and the relationship between each candidate dimming response; The actual lighting response sequence is correlated with each candidate predicted lighting response sequence according to the same driving change position; The candidate dimming response relationship is maintained such that the response differences at each drive change position are all within the preset response range; When the retained result is a single relationship, it is determined to be a valid dimming response relationship; If at least two results are retained, the current working point is updated and the common dimming range and response separation position are redefined. If the result is empty, update the current working point and re-filter candidate dimming response relationships.

8. The intelligent luminaire adaptive dimming method based on lens optical parameter matching according to claim 1, characterized in that, The steps for continuous verification of effective dimming response relationship are as follows: Generate the next drive adjustment amount and the corresponding predicted lighting state based on the effective dimming response relationship and the current operating point; Execute the next drive adjustment to obtain the new actual lighting state and form a new operating point; Determine the difference in response between the new actual lighting state and the predicted lighting state; When the response difference is within the preset response range, the driving adjustment amount continues to be generated along the effective dimming response relationship; when it exceeds the range, the effective dimming response relationship is determined to be mismatched.

9. The intelligent luminaire adaptive dimming method based on lens optical parameter matching according to claim 1, characterized in that, The steps after effective dimming response mismatch are as follows: When the difference between the current actual lighting state and the effective dimming response relationship corresponding to the predicted lighting state exceeds the preset response range, the working point where the most recent response difference was within the preset response range is determined as the starting point for relationship reconstruction. Extract the actual driving changes and actual lighting responses from the starting point of relationship reconstruction to the current actual working point to form the response segment to be reconstructed; Based on the relationship reconstruction starting point and lens optical parameters, candidate dimming response relationships are re-screened, and the actual driving changes of the response segment to be reconstructed are mapped to each candidate dimming response relationship to generate a reconstruction prediction response segment. The candidate dimming response relationship is maintained when the response difference between the reconstructed predicted response segment and the response segment to be reconstructed is within the preset response range at the same driving change position; Using the current actual working point as the updated current working point, if the retained result is a single relationship, it is determined as a new valid dimming response relationship; if the retained result is at least two, the common dimming range and response separation position are re-determined; if the retained result is empty, the candidate dimming response relationships are re-screened.

10. An intelligent luminaire adaptive dimming system based on lens optical parameter matching, employing the intelligent luminaire adaptive dimming method based on lens optical parameter matching as described in any one of claims 1-9, characterized in that, include: The candidate relationship determination module is used to form the current working point and filter and reconstruct candidate dimming response relationships; The dimming range determination module is used to perform response simulation and determine the common dimming range and response separation position; The dimming identification module is used to generate the dimming amount and form the actual lighting response sequence; The response relationship determination module is used to determine the effective dimming response relationship based on the actual lighting response sequence and to perform continuous verification. The dimming control module is used to generate drive adjustment amounts and control the dimming of smart lighting fixtures.

Images