A method and system for optimizing power consumption of light emitting diodes based on adaptive adjustment

Abstract

The application discloses a light-emitting diode power consumption optimization method and system based on adaptive adjustment, relates to the technical field of light-emitting diode driving control, and comprises the following steps: acquiring a target light-emitting amount and driving response data of each light-emitting branch, and completing time alignment according to driving pulse time sequence; constructing an improved Preisach network, and reconstructing a two-state hysteresis unit into a three-state hysteresis unit; completing state conversion according to pulse driving current, brightness response and forward voltage drop; identifying invalid short pulses, connecting to form a short pulse chain; moving the pulse edge forward, and synthesizing continuous driving pulses; accumulating brightness response, and shutting down the light-emitting branch when the target light-emitting amount is reached; and correcting state conversion time positions according to actual brightness rising positions and forward voltage drop recovery ending positions. The application can reduce repeated charging, switching loss and redundant conduction, and improve light-emitting amount control precision and power consumption optimization stability.

Description

Technical Field

[0001] This invention relates to the field of light-emitting diode (LED) driving and control technology, and in particular to a method and system for optimizing LED power consumption based on adaptive adjustment. Background Technology

[0002] In the field of LED driving control technology, pulse width modulation, current regulation, and graded dimming are commonly used to change the luminous intensity. The control unit generates a driving pulse based on the brightness command, and adjusts the pulse width, conduction frequency, and driving current by combining current sampling and brightness feedback, thereby controlling the brightness output of the luminous branch. Some control methods also establish a correspondence between driving parameters and brightness response through device calibration.

[0003] Existing control methods mostly use fixed thresholds to determine the on-state, light-emitting state, and off-state, with each drive pulse executed independently according to a predetermined sequence. When the duration of the drive pulse is short, the pulse drive current has already been established, but the brightness response has not yet fully risen, and the input electrical energy has not been able to form effective light emission. The independent execution of adjacent short pulses will also repeatedly go through the processes of turning off, re-turning on, and charging, increasing switching losses and repeated charging losses.

[0004] The brightness rise rate and voltage recovery rate after turn-off of LEDs are affected by operating temperature, device differences, and aging degree, making it difficult to consistently match the actual response with fixed control parameters. Existing methods do not adequately utilize the brightness rise process, the voltage recovery process after turn-off, and the residual energy between adjacent pulses, which easily leads to state judgment errors, invalid short pulse identification errors, redundancy in the driving period, and overshoot of light emission, making it difficult to balance brightness control accuracy and power consumption control effect.

[0005] Therefore, how to provide a method and system for optimizing the power consumption of light-emitting diodes based on adaptive adjustment is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] One objective of this invention is to propose a method and system for optimizing the power consumption of light-emitting diodes based on adaptive adjustment. This invention identifies invalid short pulses by using an improved Preisach network, synthesizes continuous drive pulses, and corrects the state transition timing based on brightness response and positive voltage drop feedback. It has the advantages of reducing switching losses, reducing invalid conduction, and improving power consumption control accuracy.

[0007] A method for optimizing the power consumption of light-emitting diodes based on adaptive adjustment according to an embodiment of the present invention includes the following steps: Obtain the target emission amount, collect the driving response data of each emission branch, and perform time alignment based on the driving pulse timing. An improved Preisach network was constructed, reconstructing the two-state hysteresis unit into a three-state hysteresis unit with a charging state, a luminous state, and a residual energy state; The time-aligned drive response data is input into the improved Preisach network. When the pulse drive current is established but the brightness response has not yet risen, it remains in the charging state. When the brightness response rises, it switches to the luminous state. When the drive pulse is turned off, it switches to the residual energy state. During the positive voltage drop recovery process, it remains in the residual energy state. When the positive voltage drop recovery ends, it exits the residual energy state. The driving pulse that has not transitioned to the light-emitting state before the driving pulse is turned off is identified as an invalid short pulse. When the next invalid short pulse is turned on, the state of the three-state hysteresis unit corresponding to the previous invalid short pulse is detected. When the state is the residual energy state, the adjacent invalid short pulses are connected to form a short pulse chain. The conduction edge of the first invalid short pulse in the short pulse chain is retained, and the conduction edge of the next invalid short pulse is moved forward to the turn-off edge of the previous invalid short pulse in sequence. The corresponding turn-off edge is moved forward synchronously according to the forward movement amount to synthesize a continuous driving pulse. The corresponding light-emitting branch is controlled according to the continuous drive pulse, and the brightness response is accumulated according to the sampling time sequence. When the accumulated value reaches the target light emission amount, the corresponding light-emitting branch is turned off, and the remaining conduction time of the continuous drive pulse is removed. The timing of the transition from the charging state to the luminous state is corrected based on the brightness response after the continuous drive pulse is executed, and the timing of the exit of the residual energy state is corrected based on the positive voltage drop recovery process after the continuous drive pulse is turned off.

[0008] Optionally, the target luminescence acquisition and driving response data formation includes the following steps: The target luminous intensity is obtained by parsing the dimming command, and the correspondence between the driving pulse and the luminous branch is established according to the timing of the driving pulse; Record the driving response data of the corresponding light-emitting branch during the conduction period and after the turn-off along the driving pulse timing sequence; The time-aligned drive response data is obtained by using the start time of each drive pulse as the time zero point for the sampling time conversion.

[0009] Optionally, constructing the improved Preisach network includes the following steps: The rising and falling thresholds of the two-state hysteresis unit are retained, and the current state is maintained when the input of the hysteresis unit is between the rising and falling thresholds; Set a residual energy exit threshold below the descent threshold to reconstruct the two-state hysteresis unit into a three-state hysteresis unit with a charging state, a light-emitting state, and a residual energy state. When the input of the hysteresis unit rises above the rising threshold, it changes from the charging state to the emitting state. When the driving pulse is turned off, the input of the hysteresis unit drops to the falling threshold, and the corresponding three-state hysteresis unit changes to the residual energy state. When the input of the hysteresis unit continues to drop to the residual energy exit threshold, it exits the residual energy state. The coordinates of the three-state hysteresis unit in the Preisach plane are determined by the rising and falling thresholds, and the residual energy exit threshold is configured on the corresponding three-state hysteresis unit to form an improved Preisach network.

[0010] Optionally, the drive response data input includes the following steps: The pulse drive current during the conduction period and the corresponding brightness response are input into the improved Preisach network according to the sampling timing. After the drive pulse is turned off, the positive voltage drop continues to be input. When the pulse drive current is established but the brightness response has not yet started, the corresponding three-state hysteresis unit remains in the charging state, and switches to the luminous state when the brightness response starts. When the driving pulse is turned off, the corresponding three-state hysteresis unit enters the residual energy state; When the forward voltage drop after shutdown is in the recovery process, the corresponding three-state hysteresis unit remains in the residual energy state, and exits the residual energy state when the forward voltage drop recovery ends.

[0011] Optionally, the invalid short pulse determination and short pulse chain connection include the following steps: Divide the conduction interval of each driving pulse along the timing sequence of the driving pulse, and obtain the state change of the corresponding three-state hysteresis unit within the conduction interval; A driving pulse that does not switch to the light-emitting state before the driving pulse is turned off is identified as an invalid short pulse. Invalid short pulses of the same light-emitting branch are arranged in the order of conduction. When the next invalid short pulse is turned on, the state of the three-state hysteresis unit corresponding to the previous invalid short pulse is detected. When the detection state is in the residual energy state, adjacent invalid short pulses are connected, and the continuously connected invalid short pulses form a short pulse chain.

[0012] Optionally, the forward movement of the conduction edge includes the following steps: Obtain the turn-on and turn-off edges of each invalid short pulse in the short pulse chain according to the turn-on sequence, and retain the turn-on edge of the first invalid short pulse; Move the turn-on edge of the subsequent invalid short pulse forward to the turn-off edge of the previous invalid short pulse, and determine the forward shift amount; The turn-off edge of the next invalid short pulse is synchronously moved forward by the forward shift amount, while keeping the on-time of the corresponding invalid short pulse unchanged; Continue moving the turn-on and turn-off edges of subsequent invalid short pulses forward in the turn-on sequence until the edge of the last invalid short pulse in the short pulse chain is moved forward.

[0013] Optionally, the synthesis of continuous driving pulses includes the following steps: The conduction edge retained by the first invalid short pulse is determined as the conduction edge of the continuous drive pulse; The turn-off edge after the last invalid short pulse in the short pulse chain is moved forward is determined as the turn-off edge of the continuous driving pulse. The continuous drive pulse is maintained between the turn-on and turn-off edges to form a continuous drive pulse.

[0014] Optionally, the continuous drive pulse control includes the following steps: The corresponding light-emitting branch is activated at the conduction edge of the continuous driving pulse; The brightness response of the corresponding light-emitting branch is collected according to the sampling time sequence, and the brightness response between adjacent sampling positions is accumulated to obtain the cumulative value; The corresponding light-emitting branch remains on when the accumulated value has not reached the target light emission level, and the shutdown position is determined when the target light emission level is reached. The corresponding light-emitting branch is turned off at the turn-off position, and the conduction period between the turn-off position and the turn-off edge of the continuous drive pulse is cut off.

[0015] Optionally, the time position correction includes the following steps: Acquire the brightness response after the execution of continuous drive pulses, and locate the actual rise position of the brightness response; Compare the actual rise position of the brightness response with the time position of the transition from the charging state to the light-emitting state, and correct the time position of the transition from the charging state to the light-emitting state according to the time deviation; Acquire the forward voltage drop recovery process after the continuous drive pulse is turned off, and locate the actual end position of the forward voltage drop recovery; Compare the actual end point of the positive pressure drop recovery with the time point of the residual energy state exit, and correct the time point of the residual energy state exit according to the time deviation.

[0016] An adaptive adjustment-based power consumption optimization system for light-emitting diodes according to an embodiment of the present invention includes the following modules: The target response module is used to acquire the target luminous intensity, collect the driving response data of each luminous branch, and perform time alignment based on the driving pulse timing. The three-state network module is used to construct an improved Preisach network, which reconstructs a two-state hysteresis unit into a three-state hysteresis unit with a charging state, a light-emitting state, and a residual energy state. The state transition module is used to input the time-aligned drive response data into the improved Preisach network. When the pulse drive current is established but the brightness response has not yet risen, it remains in the charging state. When the brightness response rises, it transitions to the emitting state. When the drive pulse is turned off, it transitions to the residual energy state. During the positive voltage drop recovery process, it remains in the residual energy state. When the positive voltage drop recovery ends, it exits the residual energy state. The short pulse chain module is used to identify the driving pulse that has not transitioned to the light-emitting state before the driving pulse is turned off as an invalid short pulse. When the next invalid short pulse is turned on, the state of the three-state hysteresis unit corresponding to the previous invalid short pulse is detected. When the state is the residual energy state, the adjacent invalid short pulses are connected to form a short pulse chain. The pulse reconstruction module is used to retain the conduction edge of the first invalid short pulse in the short pulse chain, and sequentially move the conduction edge of the next invalid short pulse forward to the turn-off edge of the previous invalid short pulse, and synchronously move the corresponding turn-off edge forward according to the forward movement amount to synthesize a continuous driving pulse. The light emission control module is used to control the corresponding light emission branch according to the continuous drive pulse, accumulate the brightness response according to the sampling time sequence, and turn off the corresponding light emission branch when the accumulated value reaches the target light emission amount, thus removing the remaining conduction period of the continuous drive pulse. The adaptive correction module is used to correct the timing of the transition from the charging state to the luminous state based on the brightness response after the continuous drive pulse is executed, and to correct the timing of the exit of the residual energy state based on the positive voltage drop recovery process after the continuous drive pulse is turned off.

[0017] The beneficial effects of this invention are: (1) The present invention utilizes an improved Preisach network to distinguish between the charging state, the light-emitting state and the residual energy state, and identifies invalid short pulses in which the pulse driving current has been established but the brightness response has not yet risen, thereby reducing the power consumption when no effective light emission is formed and improving the effective utilization rate of the driving power of the light-emitting diode.

[0018] (2) According to the residual energy state, the present invention connects adjacent invalid short pulses and synthesizes continuous driving pulses by forward-shifting the pulse edge, thereby reducing the switching loss and recharging loss caused by repeated turning off and re-turning of the light-emitting branch; the brightness response cumulative value is turned off in time after reaching the target light emission amount to avoid additional power consumption caused by the remaining conduction period.

[0019] (3) The present invention corrects the time position of the transition from the charging state to the luminous state according to the actual brightness rise position, and corrects the time position of the exit of the residual energy state according to the end position of the positive voltage drop recovery. It can adapt to changes in device temperature, aging degree and branch parameters, and improve the accuracy of invalid short pulse identification, short pulse chain connection and shutdown control. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is an overall flowchart of a power consumption optimization method for light-emitting diodes based on adaptive adjustment proposed in this invention; Figure 2 This is a schematic diagram of the structure of the improved Preisach network in this invention; Figure 3 This is a block diagram of a power consumption optimization system for light-emitting diodes based on adaptive adjustment, as described in this invention. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0022] refer to Figures 1-3 A method for optimizing the power consumption of light-emitting diodes based on adaptive adjustment includes the following steps: Obtain the target emission amount, collect the driving response data of each emission branch, and perform time alignment based on the driving pulse timing. An improved Preisach network was constructed, reconstructing the two-state hysteresis unit into a three-state hysteresis unit with a charging state, a luminous state, and a residual energy state; The time-aligned drive response data is input into the improved Preisach network. When the pulse drive current is established but the brightness response has not yet risen, it remains in the charging state. When the brightness response rises, it switches to the luminous state. When the drive pulse is turned off, it switches to the residual energy state. During the positive voltage drop recovery process, it remains in the residual energy state. When the positive voltage drop recovery ends, it exits the residual energy state. The driving pulse that has not transitioned to the light-emitting state before the driving pulse is turned off is identified as an invalid short pulse. When the next invalid short pulse is turned on, the state of the three-state hysteresis unit corresponding to the previous invalid short pulse is detected. When the state is the residual energy state, the adjacent invalid short pulses are connected to form a short pulse chain. The conduction edge of the first invalid short pulse in the short pulse chain is retained, and the conduction edge of the next invalid short pulse is moved forward to the turn-off edge of the previous invalid short pulse in sequence. The corresponding turn-off edge is moved forward synchronously according to the forward movement amount to synthesize a continuous driving pulse. The corresponding light-emitting branch is controlled according to the continuous drive pulse, and the brightness response is accumulated according to the sampling time sequence. When the accumulated value reaches the target light emission amount, the corresponding light-emitting branch is turned off, and the remaining conduction time of the continuous drive pulse is removed. The timing of the transition from the charging state to the luminous state is corrected based on the brightness response after the continuous drive pulse is executed, and the timing of the exit of the residual energy state is corrected based on the positive voltage drop recovery process after the continuous drive pulse is turned off.

[0023] In this embodiment, the acquisition of target luminescence and the formation of driving response data include the following steps: The target luminous intensity is obtained by parsing the dimming command, and the correspondence between the driving pulse and the luminous branch is established according to the timing of the driving pulse; Perform graded dimming calibration on each light-emitting branch, integrate the brightness response formed by each level of brightness control value within a dimming cycle, and establish the correspondence between brightness control value and light emission amount; extract the brightness control value and light-emitting branch identifier from the current dimming command, call the correspondence to determine the target light emission amount, and associate the driving pulse with the light-emitting branch according to the driving pulse timing sequence.

[0024] Record the driving response data of the corresponding light-emitting branch during the conduction period and after the turn-off along the driving pulse timing sequence; When no driving pulse is applied to the light-emitting branch, the voltage from the anode to the cathode of the light-emitting diode is acquired through the high-impedance sampling branch to determine the baseline voltage range and the baseline voltage variation range. The sampling current generated by the high-impedance sampling branch is lower than the lower limit of the light-emitting conduction current. When the driving pulse is turned on, the pulse driving current and brightness response are recorded simultaneously. After the driving pulse is turned off, the forward voltage drop continues to be recorded. The recording ends when the forward voltage drop enters the baseline voltage range and the change in adjacent sampled values ​​enters the baseline voltage variation range, and the sampled data corresponding to the current driving pulse is included in the same driving response data.

[0025] The time-aligned drive response data is obtained by using the start time of each drive pulse as the time zero point for the sampling time conversion.

[0026] Using the start time of the driving pulse as the zero point, the sampling time corresponding to the same driving pulse is converted into a relative time position; the sampling values ​​are arranged according to the relative time position, and the light-emitting branch identifier and the driving pulse identifier are retained to form time-aligned driving response data.

[0027] In this embodiment, constructing the improved Preisach network includes the following steps: The rising and falling thresholds of the two-state hysteresis unit are retained, and the current state is maintained when the input of the hysteresis unit is between the rising and falling thresholds; Before applying the calibration drive pulse, the turn-off current range is determined based on the pulse drive current of each light-emitting branch, and the baseline brightness range is determined based on the synchronous brightness response. The maximum sampled value of the pulse drive current of each light-emitting branch is taken as the current scale, and the maximum cumulative value of the amount exceeding the upper limit of the turn-off current range before the brightness response rises is taken as the conduction accumulation scale. The hysteresis unit input is normalized to 0 to 1, and the falling threshold is determined based on the proportion of the upper limit of the turn-off current range to the current scale. When the brightness response first exceeds the upper limit of the baseline brightness range, and subsequent sampled values ​​remain above the upper limit of the baseline brightness range, the brightness response rise position is determined. The rising threshold is determined between the falling threshold and 1 based on the proportion of the cumulative amount before the rise position to the conduction accumulation scale.

[0028] Set a residual energy exit threshold below the descent threshold to reconstruct the two-state hysteresis unit into a three-state hysteresis unit with a charging state, a light-emitting state, and a residual energy state. The baseline voltage range and baseline voltage variation range are determined based on the forward voltage drop during the non-driven period of each light-emitting branch. The maximum value of the voltage difference where the first forward voltage drop after turn-off is higher than the upper limit of the baseline voltage range is taken as the recovery voltage scale. The difference between the first forward voltage drop after turn-off and the current forward voltage drop is taken as the recovered voltage. When the forward voltage drop enters the baseline voltage range and the change in adjacent sample values ​​enters the baseline voltage variation range, the recovery end position is determined. Based on the proportion of the recovered voltage at the recovery end position to the recovery voltage scale, the residual energy exit threshold is determined between the drop threshold and 0. The low state of the two-state hysteresis unit is associated with the charging state, and the high state is associated with the light-emitting state. A residual energy state is added during the recovery phase after the drive pulse is turned off.

[0029] When the input of the hysteresis unit rises above the rising threshold, it changes from the charging state to the emitting state. When the driving pulse is turned off, the input of the hysteresis unit drops to the falling threshold, and the corresponding three-state hysteresis unit changes to the residual energy state. When the input of the hysteresis unit continues to drop to the residual energy exit threshold, it exits the residual energy state. The inputs of adjacent hysteresis units are compared according to the sampling timing. When the current sampled value changes from below the rising threshold to reaching or above the rising threshold, the current state is updated from the charging state to the emitting state; when the drive pulse is turned off, the input of the hysteresis unit is updated to the falling threshold, and the current state is updated to the residual energy state; during the positive voltage drop recovery process, when the input of the hysteresis unit reaches or falls below the residual energy exit threshold, it exits the residual energy state and the current state is updated to the charging state.

[0030] The coordinates of the three-state hysteresis unit in the Preisach plane are determined by the rising and falling thresholds, and the residual energy exit threshold is configured on the corresponding three-state hysteresis unit to form an improved Preisach network.

[0031] For each emitting branch, the rising threshold, falling threshold, and residual energy exit threshold are stored separately. The rising threshold is used as the x-axis of the Preisach plane, and the falling threshold is used as the y-axis. The corresponding three-state hysteresis unit is then configured to the corresponding coordinate position. The residual energy exit threshold and the current state are stored in the three-state hysteresis unit. The drive response data calls the corresponding three-state hysteresis unit to perform state updates based on the emitting branch identifier.

[0032] In this embodiment, the drive response data input includes the following steps: The pulse drive current during the conduction period and the corresponding brightness response are input into the improved Preisach network according to the sampling timing. After the drive pulse is turned off, the positive voltage drop continues to be input. A correspondence between the sampling data and the starting time of the driving pulse is established based on the light-emitting branch. The pulse driving current and brightness response are matched according to the aligned sampling time. During conduction, the portion of the pulse driving current exceeding the upper limit of the turn-off current range is accumulated according to the sampling order. The hysteresis unit input is determined between a falling threshold and 1 based on the proportion of the current accumulated amount to the conduction accumulation scale. When the driving pulse turns off, the hysteresis unit input is updated to the falling threshold. After turn-off, the difference between the first positive voltage drop and the current positive voltage drop is used as the recovered voltage. The hysteresis unit input is determined between a falling threshold and 0 based on the proportion of the current recovered voltage to the recovery voltage scale. When the current accumulated amount reaches or exceeds the conduction accumulation scale, the hysteresis unit input is kept at 1; when the current recovered voltage reaches or exceeds the recovery voltage scale, the hysteresis unit input is kept at 0.

[0033] When the pulse drive current is established but the brightness response has not yet started, the corresponding three-state hysteresis unit remains in the charging state, and switches to the luminous state when the brightness response starts. When the pulsed drive current leaves the turn-off current range, the brightness response remains within the baseline brightness range and the charging state is maintained. When the brightness response first exceeds the upper limit of the baseline brightness range and subsequent sampled values ​​remain above the upper limit of the baseline brightness range, the brightness response rise position is determined and the current state is updated to the luminous state.

[0034] When the driving pulse is turned off, the corresponding three-state hysteresis unit enters the residual energy state; When the pulse drive current re-enters the turn-off current range, the turn-off position of the drive pulse is determined, and the current state is updated to the residual energy state at the current sampling position.

[0035] When the forward voltage drop after shutdown is in the recovery process, the corresponding three-state hysteresis unit remains in the residual energy state, and exits the residual energy state when the forward voltage drop recovery ends.

[0036] The baseline voltage range is determined by the forward voltage drop before the drive pulse is turned on, and the range of changes in adjacent sampled values ​​during the same period is taken as the baseline voltage variation range. If the forward voltage drop after the turn-off does not enter the baseline voltage range, or if the change in adjacent sampled values ​​does not enter the baseline voltage variation range, the system remains in the residual energy state; if the forward voltage drop enters the baseline voltage range, and the change in adjacent sampled values ​​also enters the baseline voltage variation range, the position where the forward voltage drop recovery ends is determined, and the system exits the residual energy state.

[0037] In this embodiment, the determination of invalid short pulses and the connection of short pulse chains include the following steps: Divide the conduction interval of each driving pulse along the timing sequence of the driving pulse, and obtain the state change of the corresponding three-state hysteresis unit within the conduction interval; The turn-off current range is determined by sampling the pulse drive current value before the application of the drive pulse. The position where the pulse drive current first leaves the turn-off current range is taken as the turn-on edge, and the position where the pulse drive current falls back and re-enters the turn-off current range is taken as the turn-off edge. The sampling positions between the two edges are classified into the same conduction interval. The state of the corresponding three-state hysteresis unit is extracted according to the sampling time to form a record of the state change of the conduction interval.

[0038] A driving pulse that does not switch to the light-emitting state before the driving pulse is turned off is identified as an invalid short pulse. Starting from the sampling position corresponding to the conduction edge, check each state change record one by one, ending at the last sampling position before the turn-off edge. If no light emission state is observed during the check, add the corresponding driving pulse to the invalid short pulse sequence of the corresponding light emission branch.

[0039] Invalid short pulses of the same light-emitting branch are arranged in the order of conduction. When the next invalid short pulse is turned on, the state of the three-state hysteresis unit corresponding to the previous invalid short pulse is detected. For invalid short pulses, the corresponding light-emitting branch, conduction edge, turn-off edge, and corresponding three-state hysteresis unit are saved. After the previous invalid short pulse turns off, the corresponding three-state hysteresis unit is continuously updated according to the subsequent forward voltage drop sampling results; when the next invalid short pulse reaches the conduction edge, the updated current state is obtained.

[0040] When the detection state is in the residual energy state, adjacent invalid short pulses are connected, and the continuously connected invalid short pulses form a short pulse chain.

[0041] When the current state is in the residual energy state, the connection between the turn-off edge of the previous invalid short pulse and the turn-on edge of the next invalid short pulse is saved, and the next invalid short pulse is used as the previous invalid short pulse for the next detection. When the current state is not in the residual energy state, no current connection is established; if a connection already exists, the current short pulse chain is terminated, and the next invalid short pulse is used as the starting object for subsequent connections. During continuous connections, the edge positions of the first invalid short pulse and each subsequent invalid short pulse are saved for use in the synthesis of continuous drive pulses.

[0042] In this embodiment, the forward movement of the conduction edge includes the following steps: Obtain the turn-on and turn-off edges of each invalid short pulse in the short pulse chain according to the turn-on sequence, and retain the turn-on edge of the first invalid short pulse; The invalid short pulses in the short pulse chain are arranged according to the sampling time of the original conduction edge, and each invalid short pulse is assigned a pulse number. The conduction edge time, the turn-off edge time, and the drive control data between the two edges are saved to the corresponding pulse number, and the conduction edge corresponding to the first pulse number remains in its original position.

[0043] Move the turn-on edge of the subsequent invalid short pulse forward to the turn-off edge of the previous invalid short pulse, and determine the forward shift amount; Processing begins from the second pulse number. The original turn-off edge saved from the previous pulse number is used as the target position for the second invalid short pulse, and the turn-off edge updated from the previous pulse number is used as the target position for subsequent invalid short pulses. The time interval between the current turn-on edge and the target position is taken as the forward shift amount.

[0044] The turn-off edge of the next invalid short pulse is synchronously moved forward by the forward shift amount, while keeping the on-time of the corresponding invalid short pulse unchanged; The turn-on and turn-off edges of the currently invalid short pulses are updated synchronously according to the forward shift, and the entire drive control data between the two edges is moved to the updated time position. The time interval before and after the edge update is the same, and the sampling order and corresponding drive amplitude of the drive control data remain unchanged.

[0045] Continue moving the turn-on and turn-off edges of subsequent invalid short pulses forward in the turn-on sequence until the edge of the last invalid short pulse in the short pulse chain is moved forward.

[0046] After the current pulse number is updated, the updated turn-off edge is used as the target position for the next pulse number. The pulse numbers are processed sequentially, with the turn-on edge of the next invalid short pulse and the turn-off edge of the previous invalid short pulse being sampled at the same time, until the last pulse number is updated.

[0047] In this embodiment, the synthesis of continuous driving pulses includes the following steps: The conduction edge retained by the first invalid short pulse is determined as the conduction edge of the continuous drive pulse; Select the first pulse number from the short pulse train, and call the conduction edge moment when no position change occurs as the time position for the start of continuous drive pulse output conduction control.

[0048] The turn-off edge after the last invalid short pulse in the short pulse chain is moved forward is determined as the turn-off edge of the continuous driving pulse. Select the last pulse number from the short pulse train, and call the turn-off edge time after the forward shift is completed, as the time position for the continuous drive pulse to stop output conduction control.

[0049] The continuous drive pulse is maintained between the turn-on and turn-off edges to form a continuous drive pulse.

[0050] Arrange the invalid short pulses sequentially according to their shifted time positions. Merge the turn-on edge of the subsequent invalid short pulse with the turn-off edge of the preceding invalid short pulse into the same edge position, and delete the corresponding turn-off control and re-turn-on control. Retain the turn-on edge of the first invalid short pulse and the turn-off edge of the last invalid short pulse, and set the interval between them as the continuous conduction interval. Configure the drive amplitude of each invalid short pulse in the continuous conduction interval according to the shifted time sequence to form a continuous drive pulse.

[0051] In this embodiment, the continuous drive pulse control includes the following steps: The corresponding light-emitting branch is activated at the conduction edge of the continuous driving pulse; Establish the correspondence between continuous driving pulses and corresponding light-emitting branches of short pulse chains. When the continuous driving pulse reaches the conduction edge, output driving control to the corresponding light-emitting branch and start recording the brightness response at the same time.

[0052] The brightness response of the corresponding light-emitting branch is collected according to the sampling time sequence, and the brightness response between adjacent sampling positions is accumulated to obtain the cumulative value; Using the conduction edge of the continuous driving pulse as the accumulation starting point, the luminous intensity of the current sampling interval is determined by taking the average value of the brightness response at adjacent sampling times and the sampling time interval. Then, the existing accumulated values ​​are added according to the sampling order. The target luminous intensity is expressed using the same dimensions as the brightness response accumulated over time.

[0053] The corresponding light-emitting branch remains on when the accumulated value has not reached the target light emission level, and the shutdown position is determined when the target light emission level is reached. If the cumulative value before the current sampling interval is added is lower than the target luminous intensity, and the target luminous intensity is reached after adding the luminous intensity of the current sampling interval, then the current sampling interval is determined as the target interval. The remaining luminous intensity between the target luminous intensity and the initial cumulative value of the target interval is calculated, and the proportion of the remaining luminous intensity to the luminous intensity of the target interval is determined. Based on this proportion, the cutoff position is located within the target interval.

[0054] The corresponding light-emitting branch is turned off at the turn-off position, and the conduction period between the turn-off position and the turn-off edge of the continuous drive pulse is cut off.

[0055] Replace the original turn-off edge of the continuous drive pulse with the determined turn-off position, delete the conduction control after the turn-off position, and stop outputting drive control to the corresponding light-emitting branch at the turn-off position. After turn-off, continue to collect brightness response and forward voltage drop for subsequent time position correction.

[0056] In this embodiment, the time position correction includes the following steps: Acquire the brightness response after the execution of continuous drive pulses, and locate the actual rise position of the brightness response; The baseline brightness range is determined from the brightness response before the continuous drive pulse is turned on. Starting from the first sampling position after the turn-on edge, the position where the brightness response first exceeds the upper limit of the baseline brightness range and subsequent sampling values ​​remain above the upper limit of the baseline brightness range is recorded as the actual rise position of the brightness response.

[0057] Compare the actual rise position of the brightness response with the time position of the transition from the charging state to the light-emitting state, and correct the time position of the transition from the charging state to the light-emitting state according to the time deviation; Using the conduction edge of the continuous drive pulse as the zero point of time, the interval and direction between the actual rise position of the brightness response and the time position of the transition from the charging state to the luminous state are determined. The time position of the transition from the charging state to the luminous state is then moved towards the actual rise position of the brightness response by the corresponding interval. The input of the hysteresis unit corresponding to the corrected position is obtained, and the rise threshold of the corresponding three-state hysteresis unit is updated for subsequent use in determining the transition from the charging state to the luminous state.

[0058] Acquire the forward voltage drop recovery process after the continuous drive pulse is turned off, and locate the actual end position of the forward voltage drop recovery; The baseline voltage range and baseline voltage variation range are determined by the forward voltage drop before the continuous drive pulses are turned on. Starting from the first sampling position after the turn-off edge, the forward voltage drop first enters the baseline voltage range, and subsequent sampling values ​​remain within the baseline voltage range. When the change in adjacent sampling values ​​is within the baseline voltage variation range, the first entry position is recorded as the actual end position of the forward voltage drop recovery.

[0059] Compare the actual end point of the positive pressure drop recovery with the time point of the residual energy state exit, and correct the time point of the residual energy state exit according to the time deviation.

[0060] Using the turn-off edge of the continuous drive pulse as the time zero point, the interval and direction between the actual end position of the forward voltage drop recovery and the time position of the residual energy state exit are determined. The time position of the residual energy state exit is moved towards the actual end position of the forward voltage drop recovery by the corresponding interval. The input of the hysteresis unit corresponding to the corrected position is obtained, and the residual energy exit threshold of the corresponding three-state hysteresis unit is updated for subsequent residual energy state exit determination.

[0061] An adaptive adjustment-based power consumption optimization system for light-emitting diodes according to an embodiment of the present invention includes the following modules: The target response module is used to acquire the target luminous intensity, collect the driving response data of each luminous branch, and perform time alignment based on the driving pulse timing. The three-state network module is used to construct an improved Preisach network, which reconstructs a two-state hysteresis unit into a three-state hysteresis unit with a charging state, a light-emitting state, and a residual energy state. The state transition module is used to input the time-aligned drive response data into the improved Preisach network. When the pulse drive current is established but the brightness response has not yet risen, it remains in the charging state. When the brightness response rises, it transitions to the emitting state. When the drive pulse is turned off, it transitions to the residual energy state. During the positive voltage drop recovery process, it remains in the residual energy state. When the positive voltage drop recovery ends, it exits the residual energy state. The short pulse chain module is used to identify the driving pulse that has not transitioned to the light-emitting state before the driving pulse is turned off as an invalid short pulse. When the next invalid short pulse is turned on, the state of the three-state hysteresis unit corresponding to the previous invalid short pulse is detected. When the state is the residual energy state, the adjacent invalid short pulses are connected to form a short pulse chain. The pulse reconstruction module is used to retain the conduction edge of the first invalid short pulse in the short pulse chain, and sequentially move the conduction edge of the next invalid short pulse forward to the turn-off edge of the previous invalid short pulse, and synchronously move the corresponding turn-off edge forward according to the forward movement amount to synthesize a continuous driving pulse. The light emission control module is used to control the corresponding light emission branch according to the continuous drive pulse, accumulate the brightness response according to the sampling time sequence, and turn off the corresponding light emission branch when the accumulated value reaches the target light emission amount, thus removing the remaining conduction period of the continuous drive pulse. The adaptive correction module is used to correct the timing of the transition from the charging state to the luminous state based on the brightness response after the continuous drive pulse is executed, and to correct the timing of the exit of the residual energy state based on the positive voltage drop recovery process after the continuous drive pulse is turned off.

[0062] Example 1: To verify the feasibility of this invention in practice, it was applied to a dimming scenario for a light-emitting diode array. The scenario includes independent light-emitting branches, each receiving a driving pulse according to a dimming command. During low-brightness operation, the driving pulses generated by the control terminal have a short duration; some pulses can only complete junction capacitance charging and carrier establishment, and the brightness response enters the turn-off phase before it can rise. The brightness rise rate and the forward voltage drop recovery rate after turn-off are affected by operating temperature rise, device differences, and aging levels, thus requiring adjustments to the state transition positions based on the actual driving response.

[0063] Before implementation, graded dimming calibration is performed on each light-emitting branch. The control terminal drives the light-emitting branches under different brightness control values, accumulates the brightness response according to the sampling time sequence, and establishes the correspondence between the brightness control value and the light emission amount. After receiving the dimming command, the control terminal extracts the brightness control value and the light-emitting branch identifier, obtains the target light emission amount according to the correspondence, and then establishes the association between the driving pulse and the light-emitting branch according to the driving pulse time sequence.

[0064] During the drive pulse conduction period, the control terminal synchronously acquires the pulse drive current and brightness response. After the drive pulse is turned off, it continues to acquire the forward voltage drop between the anode and cathode of the LED. Without a drive pulse, the control terminal obtains the turn-off current range, baseline brightness range, baseline voltage range, and baseline voltage variation range through a high-impedance sampling branch. The sampling current of the high-impedance sampling branch is lower than the lower limit of the conduction current of the light-emitting branch, so it will not cause light emission. Once the forward voltage drop enters the baseline voltage range, and the change between adjacent sampling positions enters the baseline voltage variation range, the data acquisition corresponding to the current drive pulse ends.

[0065] The control unit uses the start position of each drive pulse as the time zero point, converts the sampling positions during the conduction period and after the turn-off into relative positions, and arranges the pulse drive current, brightness response, and forward voltage drop according to the relative positions to form time-aligned drive response data. Each group of drive response data retains the light-emitting branch identifier and drive pulse identifier to distinguish different light-emitting branches and adjacent drive pulses.

[0066] When constructing the improved Preisach network, the control terminal configures corresponding three-state hysteresis units for each light-emitting branch. During the turn-on phase, the portion of the pulse drive current exceeding the upper limit of the turn-off current range is accumulated according to the sampling sequence, forming a hysteresis unit input that increases with the turn-on process. After turn-off, the hysteresis unit input decreases based on the degree to which the forward voltage drop recovers from the turn-off position to the baseline voltage range. When the brightness response begins to deviate from the baseline brightness range, the corresponding hysteresis unit input is obtained and set as the rising threshold; when the pulse drive current re-enters the turn-off current range, the corresponding hysteresis unit input is obtained and set as the falling threshold; when the forward voltage drop enters the baseline voltage range and the change stabilizes, the corresponding hysteresis unit input is obtained and set as the residual energy exit threshold.

[0067] The control unit determines the coordinates of the three-state hysteresis unit in the Preisach plane using rising and falling thresholds, and configures the residual energy exit threshold to the corresponding three-state hysteresis unit. The hysteresis unit maintains its current state when its input is between the rising and falling thresholds. When the pulse drive current has been established and the brightness response is still within the baseline brightness range, the three-state hysteresis unit remains in the charging state; when the hysteresis unit input reaches the rising threshold and the brightness response leaves the baseline brightness range, the three-state hysteresis unit switches to the emitting state; when the drive pulse is turned off and the hysteresis unit input drops to the falling threshold, the three-state hysteresis unit switches to the residual energy state; it remains in the residual energy state during the forward voltage drop recovery period, and exits the residual energy state when the hysteresis unit input drops to the residual energy exit threshold.

[0068] The control terminal divides the conduction interval of each drive pulse according to the timing sequence and checks the state changes of the corresponding three-state hysteresis unit according to the sampling order. If a certain drive pulse does not transition to the light-emitting state before being turned off, the corresponding drive pulse is identified as an invalid short pulse, and the conduction edge, turn-off edge, light-emitting branch identifier, and corresponding three-state hysteresis unit are saved. When the next invalid short pulse turns on, the control terminal obtains the current state of the three-state hysteresis unit corresponding to the previous invalid short pulse. If the previous three-state hysteresis unit is still in the residual energy state, it indicates that the positive voltage drop generated by the previous drive process has not yet recovered, and the two invalid short pulses have the conditions for continuous use, so a connection relationship is established. When the previous three-state hysteresis unit has exited the residual energy state, the current connection relationship is terminated, and the next invalid short pulse is used as the new check starting point. Invalid short pulses that continuously establish connection relationships form a short pulse chain.

[0069] After the short pulse chain is formed, the control terminal obtains the turn-on and turn-off edges of each invalid short pulse in the turn-on sequence. The turn-on edge of the first invalid short pulse remains unchanged, and the turn-on edge of the subsequent invalid short pulse moves forward to the turn-off edge of the previous invalid short pulse. Then, the corresponding turn-off edge is adjusted synchronously by the same forward movement, thereby keeping the turn-on duration of the corresponding invalid short pulse constant. Subsequent invalid short pulses undergo edge adjustment in sequence until the last invalid short pulse is processed.

[0070] After edge adjustment, the control terminal removes the turn-off and re-on controls at the boundary of adjacent invalid short pulses. The remaining conduction edge of the first invalid short pulse is used as the conduction edge of the continuous drive pulse, and the turn-off edge shifted forward from the last invalid short pulse is used as the turn-off edge of the continuous drive pulse. The corresponding light-emitting branch remains conductive between the two edges, forming a continuous drive pulse. This reduces the energy loss caused by repeated turn-off, re-on, and recharging between adjacent short pulses.

[0071] During the execution of continuous drive pulses, the control terminal acquires the brightness response according to the sampling sequence, accumulates the brightness response between adjacent sampling positions, and obtains the cumulative value of the corresponding light-emitting branch. The light-emitting branch remains on until the cumulative value reaches the target light-emitting amount; when the cumulative value reaches the target light-emitting amount, a turn-off position is located within the corresponding sampling interval, the turn-off edge of the continuous drive pulse is adjusted to the turn-off position, and the remaining conduction period between the turn-off position and the original turn-off edge is removed. After the light-emitting branch is turned off, the forward voltage drop continues to be acquired, providing drive response data for the correction of the residual energy state exit position.

[0072] After the continuous drive pulses are executed, the control unit locates the actual lifting position from the brightness response. When the brightness response first deviates from the baseline brightness range, and subsequent sampling positions remain outside the baseline brightness range, the corresponding position is determined as the actual lifting position of the brightness response. The control unit compares the actual lifting position with the time position of the transition from the charging state to the luminous state, corrects the state transition position according to the time deviation, obtains the hysteresis unit input corresponding to the corrected time position, and updates the rising threshold using the corresponding hysteresis unit input.

[0073] The control unit also locates the actual recovery end position from the forward voltage drop after the continuous drive pulses are turned off. When the forward voltage drop first enters the baseline voltage range, and subsequent changes remain within the baseline voltage range, the corresponding position is determined as the actual recovery end position of the forward voltage drop. The control unit compares the actual recovery end position with the current residual energy state exit time position, corrects the residual energy state exit position according to the time deviation, obtains the hysteresis unit input corresponding to the corrected time position, and updates the residual energy exit threshold using the corresponding hysteresis unit input. The corrected rise threshold and residual energy exit threshold are used for the state transition determination of subsequent drive pulses. The invalid short pulse identification range and short pulse chain connection range are adjusted according to the actual response of the light-emitting branch.

[0074] For example, if the target luminous intensity of a certain light-emitting branch is normalized to 0.600, and three consecutive invalid short pulses occur, each containing four conduction sampling intervals, each of which is turned off before the brightness response rises when executed individually. When the second invalid short pulse is turned on, the three-state hysteresis unit corresponding to the first invalid short pulse is still in the residual energy state; when the third invalid short pulse is turned on, the three-state hysteresis unit corresponding to the second invalid short pulse is still in the residual energy state. Therefore, the three invalid short pulses are connected into a short pulse chain. After edge forward shifting, 12 consecutive conduction sampling intervals are formed. The brightness response rises in the fifth conduction sampling interval and reaches 0.600 in the tenth conduction sampling interval. The control terminal truncates the remaining two conduction sampling intervals. Compared to executing the three invalid short pulses independently, the corresponding drive energy consumption after continuous drive is reduced by 10.8%, and the target luminous intensity deviation rate is reduced from 2.3% to 0.8%.

[0075] Under the same target luminous intensity and the same luminous branch operating conditions, with the driving energy consumption of the fixed pulse width modulation method being 1.00, the application effects of the fixed pulse width modulation method, the fixed threshold feedback method and the present invention are compared, and the results are shown in Table 1.

[0076] Table 1 Comparison of the application effects of LED power consumption optimization methods

[0077] As shown in Table 1, under the same target luminous intensity and operating conditions of the luminous branch, the target luminous intensity deviation rate of the present invention is 1.2%, which is lower than 2.8% for the fixed pulse width modulation method and 1.9% for the fixed threshold feedback method. The present invention determines the turn-off position based on the actual brightness response, and cuts off the remaining conduction period after the cumulative value reaches the target luminous intensity. Therefore, it can reduce insufficient luminous intensity and luminous intensity overshoot, and improve the luminous intensity control accuracy.

[0078] The proportions of invalid short pulses, repeated charging, and redundant conduction in this invention are 6.1%, 7.8%, and 4.9%, respectively, all lower than the two comparative methods. The improved Preisach network identifies driving pulses that do not form an effective brightness response by using the charging state, luminous state, and residual energy state. Then, it connects adjacent invalid short pulses according to the residual energy state, and uses edge forward shifting to form continuous driving pulses, thereby reducing repeated turn-off, re-conduction, and recharging caused by independent execution of short pulses.

[0079] The normalized driving energy consumption of this invention is 0.90, while that of the fixed pulse width modulation method and the fixed threshold feedback method is 1.00 and 0.96, respectively, indicating that this invention reduces driving energy consumption while maintaining the target luminous intensity. The state transition time position is continuously corrected based on the actual brightness rise process and the positive voltage drop recovery process. Subsequent invalid short pulse identification and short pulse chain connection better match the actual response of the luminous branch, improving the stability of the power consumption optimization effect.

[0080] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A method for optimizing the power consumption of light-emitting diodes based on adaptive adjustment, characterized in that, Includes the following steps: Obtain the target emission amount, collect the driving response data of each emission branch, and perform time alignment based on the driving pulse timing. An improved Preisach network was constructed, reconstructing the two-state hysteresis unit into a three-state hysteresis unit with a charging state, a luminous state, and a residual energy state; The time-aligned drive response data is input into the improved Preisach network. When the pulse drive current is established but the brightness response has not yet risen, it remains in the charging state. When the brightness response rises, it switches to the luminous state. When the drive pulse is turned off, it switches to the residual energy state. During the positive voltage drop recovery process, it remains in the residual energy state. When the positive voltage drop recovery ends, it exits the residual energy state. The driving pulse that has not transitioned to the light-emitting state before the driving pulse is turned off is identified as an invalid short pulse. When the next invalid short pulse is turned on, the state of the three-state hysteresis unit corresponding to the previous invalid short pulse is detected. When the state is the residual energy state, the adjacent invalid short pulses are connected to form a short pulse chain. The conduction edge of the first invalid short pulse in the short pulse chain is retained, and the conduction edge of the next invalid short pulse is moved forward to the turn-off edge of the previous invalid short pulse in sequence. The corresponding turn-off edge is moved forward synchronously according to the forward movement amount to synthesize a continuous driving pulse. The corresponding light-emitting branch is controlled according to the continuous drive pulse, and the brightness response is accumulated according to the sampling time sequence. When the accumulated value reaches the target light emission amount, the corresponding light-emitting branch is turned off, and the remaining conduction time of the continuous drive pulse is removed. The timing of the transition from the charging state to the luminous state is corrected based on the brightness response after the continuous drive pulse is executed, and the timing of the exit of the residual energy state is corrected based on the positive voltage drop recovery process after the continuous drive pulse is turned off.

2. The method for optimizing the power consumption of light-emitting diodes based on adaptive adjustment according to claim 1, characterized in that, The acquisition of target luminescence and the generation of driving response data include the following steps: The target luminous intensity is obtained by parsing the dimming command, and the correspondence between the driving pulse and the luminous branch is established according to the timing of the driving pulse; Record the driving response data of the corresponding light-emitting branch during the conduction period and after the turn-off along the driving pulse timing sequence; The time-aligned drive response data is obtained by using the start time of each drive pulse as the time zero point for the sampling time conversion.

3. The method for optimizing the power consumption of light-emitting diodes based on adaptive adjustment according to claim 1, characterized in that, The construction of the improved Preisach network includes the following steps: The rising and falling thresholds of the two-state hysteresis unit are retained, and the current state is maintained when the input of the hysteresis unit is between the rising and falling thresholds; Set a residual energy exit threshold below the descent threshold to reconstruct the two-state hysteresis unit into a three-state hysteresis unit with a charging state, a light-emitting state, and a residual energy state. When the input of the hysteresis unit rises above the rising threshold, it changes from the charging state to the emitting state. When the driving pulse is turned off, the input of the hysteresis unit drops to the falling threshold, and the corresponding three-state hysteresis unit changes to the residual energy state. When the input of the hysteresis unit continues to drop to the residual energy exit threshold, it exits the residual energy state. The coordinates of the three-state hysteresis unit in the Preisach plane are determined by the rising and falling thresholds, and the residual energy exit threshold is configured on the corresponding three-state hysteresis unit to form an improved Preisach network.

4. The method for optimizing the power consumption of light-emitting diodes based on adaptive adjustment according to claim 1, characterized in that, The drive response data input includes the following steps: The pulse drive current during the conduction period and the corresponding brightness response are input into the improved Preisach network according to the sampling timing. After the drive pulse is turned off, the positive voltage drop continues to be input. When the pulse drive current is established but the brightness response has not yet started, the corresponding three-state hysteresis unit remains in the charging state, and switches to the luminous state when the brightness response starts. When the driving pulse is turned off, the corresponding three-state hysteresis unit enters the residual energy state; When the forward voltage drop after shutdown is in the recovery process, the corresponding three-state hysteresis unit remains in the residual energy state, and exits the residual energy state when the forward voltage drop recovery ends.

5. The method for optimizing the power consumption of light-emitting diodes based on adaptive adjustment according to claim 4, characterized in that, The determination of invalid short pulses and the connection of short pulse chains include the following steps: Divide the conduction interval of each driving pulse along the timing sequence of the driving pulse, and obtain the state change of the corresponding three-state hysteresis unit within the conduction interval; A driving pulse that does not switch to the light-emitting state before the driving pulse is turned off is identified as an invalid short pulse. Invalid short pulses of the same light-emitting branch are arranged in the order of conduction. When the next invalid short pulse is turned on, the state of the three-state hysteresis unit corresponding to the previous invalid short pulse is detected. When the detection state is in the residual energy state, adjacent invalid short pulses are connected, and the continuously connected invalid short pulses form a short pulse chain.

6. The method for optimizing the power consumption of light-emitting diodes based on adaptive adjustment according to claim 1, characterized in that, The forward movement of the conduction edge includes the following steps: Obtain the turn-on and turn-off edges of each invalid short pulse in the short pulse chain according to the turn-on sequence, and retain the turn-on edge of the first invalid short pulse; Move the turn-on edge of the subsequent invalid short pulse forward to the turn-off edge of the previous invalid short pulse, and determine the forward shift amount; The turn-off edge of the next invalid short pulse is synchronously moved forward by the forward shift amount, while keeping the on-time of the corresponding invalid short pulse unchanged; Continue moving the turn-on and turn-off edges of subsequent invalid short pulses forward in the turn-on sequence until the edge of the last invalid short pulse in the short pulse chain is moved forward.

7. The method for optimizing the power consumption of light-emitting diodes based on adaptive adjustment according to claim 6, characterized in that, The synthesis of continuous driving pulses includes the following steps: The conduction edge retained by the first invalid short pulse is determined as the conduction edge of the continuous drive pulse; The turn-off edge after the last invalid short pulse in the short pulse chain is moved forward is determined as the turn-off edge of the continuous driving pulse. The continuous drive pulse is maintained between the turn-on and turn-off edges to form a continuous drive pulse.

8. The method for optimizing the power consumption of light-emitting diodes based on adaptive adjustment according to claim 1, characterized in that, The continuous drive pulse control includes the following steps: The corresponding light-emitting branch is activated at the conduction edge of the continuous driving pulse; The brightness response of the corresponding light-emitting branch is collected according to the sampling time sequence, and the brightness response between adjacent sampling positions is accumulated to obtain the cumulative value; The corresponding light-emitting branch remains on when the accumulated value has not reached the target light emission level, and the shutdown position is determined when the target light emission level is reached. The corresponding light-emitting branch is turned off at the turn-off position, and the conduction period between the turn-off position and the turn-off edge of the continuous drive pulse is cut off.

9. The method for optimizing the power consumption of light-emitting diodes based on adaptive adjustment according to claim 1, characterized in that, The time position correction includes the following steps: Acquire the brightness response after the execution of continuous drive pulses, and locate the actual rise position of the brightness response; Compare the actual rise position of the brightness response with the time position of the transition from the charging state to the light-emitting state, and correct the time position of the transition from the charging state to the light-emitting state according to the time deviation; Acquire the forward voltage drop recovery process after the continuous drive pulse is turned off, and locate the actual end position of the forward voltage drop recovery; Compare the actual end point of the positive pressure drop recovery with the time point of the residual energy state exit, and correct the time point of the residual energy state exit according to the time deviation.

10. A power consumption optimization system for light-emitting diodes based on adaptive adjustment, applied to the power consumption optimization method for light-emitting diodes based on adaptive adjustment as described in any one of claims 1 to 9, characterized in that, Includes the following modules: The target response module is used to acquire the target luminous intensity, collect the driving response data of each luminous branch, and perform time alignment based on the driving pulse timing. The three-state network module is used to construct an improved Preisach network, which reconstructs a two-state hysteresis unit into a three-state hysteresis unit with a charging state, a light-emitting state, and a residual energy state. The state transition module is used to input the time-aligned drive response data into the improved Preisach network. When the pulse drive current is established but the brightness response has not yet risen, it remains in the charging state. When the brightness response rises, it transitions to the emitting state. When the drive pulse is turned off, it transitions to the residual energy state. During the positive voltage drop recovery process, it remains in the residual energy state. When the positive voltage drop recovery ends, it exits the residual energy state. The short pulse chain module is used to identify the driving pulse that has not transitioned to the light-emitting state before the driving pulse is turned off as an invalid short pulse. When the next invalid short pulse is turned on, the state of the three-state hysteresis unit corresponding to the previous invalid short pulse is detected. When the state is the residual energy state, the adjacent invalid short pulses are connected to form a short pulse chain. The pulse reconstruction module is used to retain the conduction edge of the first invalid short pulse in the short pulse chain, and sequentially move the conduction edge of the next invalid short pulse forward to the turn-off edge of the previous invalid short pulse, and synchronously move the corresponding turn-off edge forward according to the forward movement amount to synthesize a continuous driving pulse. The light emission control module is used to control the corresponding light emission branch according to the continuous drive pulse, accumulate the brightness response according to the sampling time sequence, and turn off the corresponding light emission branch when the accumulated value reaches the target light emission amount, thus removing the remaining conduction period of the continuous drive pulse. The adaptive correction module is used to correct the timing of the transition from the charging state to the luminous state based on the brightness response after the continuous drive pulse is executed, and to correct the timing of the exit of the residual energy state based on the positive voltage drop recovery process after the continuous drive pulse is turned off.

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