Tunnel entrance and exit sunshade coupling compensation control method and related equipment

Abstract

The application discloses a tunnel entrance and exit light-shading shed coupling compensation control method and related equipment, and belongs to the technical field of tunnel entrance and exit light-shading shed control. The method comprises the following steps: collecting light environment information inside and outside a tunnel entrance and exit and measured data of transmitted light of a key control partition; determining target visible light transmittance of each control partition based on the light environment information inside and outside the tunnel entrance and exit; determining a first driving state and a target transmitted light comprehensive color residual error of each control partition based on the target visible light transmittance; determining a second driving state based on a reverse influence relationship, the measured data of transmitted light of the key control partition and the target transmitted light comprehensive color residual error; correcting the first driving state based on the reverse influence relationship; and controlling a first electrochromic light control layer based on the corrected first driving state and controlling a second electrochromic light control layer based on a second target driving state. The method can reduce the deviation of the visible light transmittance of each control partition and improve the control stability of the transmitted light comprehensive color.

Description

Technical Field

[0001] This invention belongs to the field of tunnel entrance and exit shading canopy control technology, specifically relating to a coupling compensation control method and related equipment for tunnel entrance and exit shading canopies. Background Technology

[0002] Due to the significant difference between natural light outside and the light environment inside tunnels, drivers' vision needs to adapt to the changing light conditions quickly when vehicles enter or exit the tunnel. This can easily lead to the so-called "black hole effect" or "white hole effect," thus affecting driving safety. To mitigate the sudden changes in brightness at tunnel entrances and exits, existing technologies typically employ methods such as light-blocking canopies, light-reducing canopies, light-transmitting material adjustment structures, and artificial lighting control at the entrance section to improve the light environment at tunnel entrances and exits.

[0003] Electrochromic materials have been used in the field of smart dimming to alter the light transmittance and spectral properties of materials. Current technologies typically use electrochromic materials to adjust the light in tunnel entrance and exit areas. However, in tunnel entrance and exit scenarios dominated by natural transmitted light, existing technologies lack effective control methods to simultaneously achieve transitions in transmitted brightness and overall transmitted light color. To achieve both simultaneously in this scenario, it is necessary not only to adjust the transmittance but also to address the interactions between different adjustment factors, which can easily lead to significant deviations in visible light transmittance and unstable control of the overall transmitted light color.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0005] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0006] This disclosure provides a method and related equipment for coupling compensation control of a tunnel entrance / exit light-shielding canopy, which can reduce the deviation of visible light transmittance in each control zone and improve the control stability of the overall color of transmitted light.

[0007] In some embodiments, a method for coupling compensation control of a tunnel entrance / exit shading canopy includes: Step S101: Collect external light environment information, internal light environment information, and measured color transmittance data of at least one key control zone of the shading canopy at the tunnel entrance; wherein, the shading canopy is provided with multiple control zones along the driving direction, and each control zone is provided with a smart glass panel, the smart glass panel including a first electrochromic color-changing layer for adjusting visible light transmittance and a second electrochromic color-changing layer for adjusting the comprehensive color parameters of transmitted light; Step S102: Based on the external light environment information and the internal light environment information of the cave, determine the target visible light transmittance of each control zone; Step S103: For each control zone, based on the target visible light transmittance, determine the first driving state of the first electrochromic color-changing layer and the target transmitted light composite color residual, and Based on the reverse influence relationship, measured data of transmitted light from key control zones, and the comprehensive color residual of target transmitted light, the second driving state of the second electrochromic color tone layer is determined, and The first driving state is corrected based on the reverse influence relationship, and the first electrochromic color-changing layer is controlled based on the corrected first driving state and the second target driving state is controlled to control the second electrochromic color-changing layer; wherein, the reverse influence relationship characterizes the influence of the driving state of the second electrochromic color-changing layer on the visible light transmittance of the smart glass panel.

[0008] In other embodiments, a tunnel entrance / exit shading canopy coupling compensation control system includes: The sunshade has multiple control zones along the driving direction. Each control zone is equipped with a smart glass panel. The smart glass panel includes a first electrochromic color-changing layer for adjusting the visible light transmittance and a second electrochromic color-changing layer for adjusting the overall color parameters of the transmitted light. The main control module is used to implement the coupling compensation method for the tunnel entrance and exit shading canopy as described above.

[0009] In other embodiments, a computer-readable storage medium stores instructions that, when executed on a terminal device, cause the terminal device to perform the steps of the aforementioned tunnel entrance / exit shading canopy coupling compensation control method.

[0010] The beneficial effects of this invention are as follows: By collecting light environment information inside and outside the cave and measured transmitted light data from key control zones, the desired visible light transmittance for each control zone is determined, i.e., the target visible light transmittance is obtained. This ensures a smooth brightness transition in each control zone, reducing visible light transmittance deviation at the source. Based on the target visible light transmittance of each control zone, the first driving state of the first electrochromic color-changing layer of the smart glass panel and its corresponding target transmitted light comprehensive color residual are determined. Combining the influence of the driving state of the second electrochromic color-changing layer on the visible light transmittance of the smart glass panel (i.e., the inverse influence relationship), the measured transmitted light data from key control zones, and the target transmitted light comprehensive color residual, the second driving state of the second electrochromic color-changing layer is determined. Based on the inverse influence relationship, the first driving state is then corrected, forming a synergistic control of compensation and inverse correction, thereby effectively improving the control stability of the transmitted light comprehensive color. Thus, by controlling the corresponding first and second electrochromic color-changing layers based on the corrected first and second driving states of each control zone, the deviation of visible light transmittance in each control zone can be reduced, and the control stability of the transmitted light comprehensive color can be improved.

[0011] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0012] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein: Figure 1 This is a flowchart illustrating a method for coupling compensation control of a tunnel entrance / exit light-shielding canopy provided by the present invention. Figure 2 This is a schematic flowchart of a method for correcting a first driving state and a second driving state provided by the present invention; Figure 3 This is a schematic flowchart of the coupling compensation control method provided by the present invention; Figure 4 This is a schematic diagram of the control block of the coupling compensation control device provided by the present invention; Figure 5 This is a schematic diagram of the structure of a tunnel entrance / exit light-shading canopy coupling compensation control system provided by the present invention; Figure 6 This is a schematic front view of the shading canopy coupling compensation control device provided by the present invention; Figure 7 This is a schematic side view of the shading canopy coupling compensation control device provided by the present invention; Figure 8This is a schematic cross-sectional view of the dual electrochromic layer structure of the smart glass panel provided by the present invention. Detailed Implementation

[0013] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0014] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0015] Unless otherwise stated, the term "multiple" means two or more.

[0016] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0017] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0018] The term "correspondence" can refer to an association or binding relationship. The correspondence between A and B means that there is an association or binding relationship between A and B.

[0019] One existing approach involves installing zoned light-shielding canopies, light-reducing canopies, or dimming glass structures at tunnel entrances and exits. The transmittance of each zone is adjusted according to changes in external light intensity or brightness, creating a gradual brightness transition along the travel direction. This approach primarily adjusts the overall transmittance of the light-shielding material to mitigate abrupt brightness changes caused by strong external light directly entering the tunnel entrance. However, because this approach typically focuses on transmitting or brightness adjustment while rarely addressing the specific spectral characteristics of transmitted light, it becomes difficult to simultaneously address both the transition in transmitted brightness and the overall color transition of transmitted light when there are significant variations in the color temperature of external natural light or a substantial difference in overall color between the internal reference light environment and the external natural light.

[0020] Another approach involves installing an artificial lighting control system at the tunnel entrance or transition section within the tunnel. This system adjusts the brightness and / or color temperature of the luminaires based on the ambient light conditions outside the tunnel to improve visual comfort at the entrance. This approach primarily regulates the artificial light emitted by the luminaires, and its adjustment is typically concentrated at the tunnel entrance or transition section. It does not involve adjusting the tunnel's external light-shielding canopy itself, nor does it control the spectral distribution and color temperature of the natural light transmitted through the canopy. Therefore, while this approach can improve the artificial lighting environment inside the tunnel, it cannot replace the coordinated control of the transmitted light environment through the light-shielding canopy.

[0021] Furthermore, electrochromic materials have been used in the field of smart dimming to alter the light transmittance and spectral properties of materials. However, in tunnel entrance / exit scenarios dominated by natural transmitted light, existing technologies still lack effective control methods to simultaneously achieve both transmitted brightness transitions and overall transmitted light color transitions. To achieve both transmitted brightness transitions and overall transmitted light color transitions in this scenario, it is necessary not only to adjust the transmittance but also to address the interactions between different adjustment factors.

[0022] Specifically, in a multi-layer intelligent dimming structure, the dimming unit used to adjust the overall transmittance may cause changes in the overall color of transmitted light; while the spectral adjustment unit used to correct the overall color of transmitted light may affect the overall visible light transmittance by adjusting the transmittance of sub-bands. These cross-influence relationships also vary with weather, time of day, solar altitude angle, device temperature, aging level, and switching history. If the dimming state is directly set based solely on ambient light conditions, or if only a single transmittance adjustment strategy is used without considering the deviation of the overall color of transmitted light, the inverse effects between adjustment units, and changes in device status, problems such as large deviations in target transmittance, unstable control of the overall color of transmitted light, discontinuous transitions between zones, and insufficient consistency in dynamic response are likely to occur.

[0023] Therefore, it is necessary to propose a control method and related equipment for a light-shielding canopy suitable for tunnel entrance and exit scenarios (i.e., a coupling compensation control method and related equipment for a light-shielding canopy at tunnel entrance and exit) to coordinate the control of the transmission brightness transition and the comprehensive color transition of the transmission light under the condition of natural transmitted light dominance, so as to improve the control accuracy, continuity and stability under different environmental conditions.

[0024] Combination Figure 1 As shown, this disclosure provides a method for coupling compensation control of a tunnel entrance / exit shading canopy, including: Step S101: Collect external light environment information, internal light environment information, and measured color transmittance data of at least one key control zone of the shading canopy at the tunnel entrance; wherein, the shading canopy is provided with multiple control zones along the driving direction, and each control zone is provided with a smart glass panel, the smart glass panel including a first electrochromic color-changing layer for adjusting visible light transmittance and a second electrochromic color-changing layer for adjusting the comprehensive color parameters of transmitted light.

[0025] In this embodiment, the critical control zone is preferably located at at least one of the following locations: near the outer end of the tunnel, in the middle, and near the inner end of the tunnel.

[0026] Step S102: Based on the external light environment information and the internal light environment information of the cave, determine the target visible light transmittance of each control zone; Step S103: For each control zone, based on the target visible light transmittance, determine the first driving state of the first electrochromic color-changing layer and the target transmitted light composite color residual, and Based on the reverse influence relationship, measured data of transmitted light from key control zones, and the comprehensive color residual of target transmitted light, the second driving state of the second electrochromic color tone layer is determined, and The first driving state is corrected based on the reverse influence relationship, and the first electrochromic color-changing layer is controlled based on the corrected first driving state and the second target driving state is controlled to control the second electrochromic color-changing layer; wherein, the reverse influence relationship characterizes the influence of the driving state of the second electrochromic color-changing layer on the visible light transmittance of the smart glass panel.

[0027] In this embodiment, when determining the driving state of the first electrochromic color-changing layer and the second electrochromic color-changing layer, it is necessary to determine the range of feasible driving combinations under the current operating conditions.

[0028] In this embodiment, the second driving state of the second electrochromic tone-modulating layer is determined based on the reverse influence relationship, the measured data of transmitted light from the key control zone, and the comprehensive color residual of the target transmitted light. This includes: acquiring multiple historical event data, including historical reverse influence relationships, historical measured data of transmitted light from the key control zone, historical comprehensive color residual of the target transmitted light, and historical second driving states; using this historical event data, performing fitting to determine a linear fitting function between the second driving state and the reverse influence relationship, the measured data of transmitted light from the key control zone, and the comprehensive color residual of the target transmitted light; and then determining the second driving state of the second electrochromic tone-modulating layer based on this linear fitting function.

[0029] In other embodiments, the second driving state of the second electrochromic tone-modulating layer is determined based on the reverse influence relationship, measured data of transmitted light from the key control partition, and the comprehensive color residual of the target transmitted light. This includes: acquiring device state parameters, and determining the second driving state of the second electrochromic tone-modulating layer based on the device state parameters, the reverse influence relationship, measured data of transmitted light from the key control partition, and the comprehensive color residual of the target transmitted light. This specific implementation is the same as the previous embodiment and will not be described again here.

[0030] The overall color residual of transmitted light includes at least one of the correlated color temperature deviation, chromaticity coordinate deviation, and chromaticity offset Δuv deviation; when the overall color residual of transmitted light meets the threshold, the driving state combination with the smaller overall color deviation is preferentially selected as the final output.

[0031] The tunnel entrance / exit light-shielding canopy coupling compensation control method provided in this disclosure collects light environment information inside and outside the tunnel, as well as measured transmitted light data from key control zones, to determine the desired visible light transmittance for each control zone, i.e., obtain the target visible light transmittance. This ensures a smooth brightness transition between control zones, reducing visible light transmittance deviation at the source. Based on the target visible light transmittance of each control zone, the first driving state of the first electrochromic color-changing layer of the smart glass panel and its corresponding target transmitted light comprehensive color residual are determined. Then, combining the influence of the driving state of the second electrochromic color-changing layer on the visible light transmittance of the smart glass panel (i.e., the inverse influence relationship), the measured transmitted light data from key control zones, and the target transmitted light comprehensive color residual, the second driving state of the second electrochromic color-changing layer is determined. Based on the inverse influence relationship, the first driving state is corrected, forming a synergistic control of compensation and inverse correction, thereby effectively improving the control stability of the transmitted light comprehensive color. In this way, by controlling the first and second electrochromic color layers corresponding to the corrected first and second driving states of each control zone, the deviation of visible light transmittance of each control zone can be reduced, and the control stability of the overall color of transmitted light can be improved.

[0032] Preferably, based on external and internal light environment information, the target visible light transmittance of each control zone is determined, including: Based on the external and internal light environment information of the cave, and combined with the location of each control zone, the target brightness and target visible light transmittance of each control zone are determined; wherein, the target visible light transmittance includes at least one of the target correlated color temperature, target chromaticity coordinates, and target chromaticity offset; For each control zone, the target visible light transmittance is determined based on the target brightness and the target visible light transmittance.

[0033] In this way, by combining the light environment information outside the cave and the light environment information inside the cave with the location of each control zone, the target brightness and target visible light transmittance of each zone are determined. Then, for each zone, the target visible light transmittance is determined based on the target brightness and target visible light transmittance. This makes the determination of the target transmittance not only take into account the brightness transition requirements, but also incorporate the quality constraints of the transmitted light color, making the obtained target visible light transmittance more accurate.

[0034] Preferably, the external light environment information includes the effective brightness and reference correlated color temperature outside the cave, and the internal light environment information includes the effective brightness and reference correlated color temperature inside the cave; the target visible light transmittance includes the target correlated color temperature; the step of determining the target brightness and target visible light transmittance of each control zone based on the external and internal light environment information and the location of each control zone includes: For each control zone, the location parameters are acquired and normalized to obtain the normalized location parameters. Based on the effective brightness outside the hole, the reference correlated color temperature outside the hole, the effective brightness inside the hole, the reference correlated color temperature inside the hole, and the normalized location parameters, the target brightness and target correlated color temperature are determined using the following function: Li = Lin + (Lout - Lin) × fL(xi) Ci = Cin + (Cout - Cin) × fC(xi) Among them, Li Ci represents the target brightness The target correlated color temperature is represented by Lout, the effective brightness outside the hole is represented by Lin, the reference brightness inside the hole is represented by Cout, the effective correlated color temperature outside the hole is represented by Cin, the reference correlated color temperature inside the hole is represented by fL(x) and fC(x), which are both pre-constructed monotonic functions, and xi represents the normalized position parameters.

[0035] In this way, based on the effective brightness outside the tunnel, the effective correlated color temperature outside the tunnel, the reference brightness inside the tunnel, and the reference correlated color temperature inside the tunnel, and combined with the position parameters of each control zone, a monotonic function is used to calculate the target brightness and target correlated color temperature respectively, so that the target brightness and target correlated color temperature both transition monotonically and smoothly with the position parameters. This ensures continuous brightness change from outside the tunnel to inside the tunnel and achieves synchronous and smooth transition of correlated color temperature, thus avoiding visual discomfort caused by asynchronous transition of brightness and color temperature. It provides a scientific and reasonable brightness and color temperature benchmark for the target visible light transmittance and improves the stability of the overall color residual control of transmitted light.

[0036] For example, let the total length of the sunshade along the driving direction be L, and the distance from the center of the i-th control zone to the outer end of the sunshade be li. Then, the normalized position parameter xi of the i-th control zone is xi = li / L, and 0 ≤ xi ≤ 1. The filtered effective luminance outside the tunnel is denoted as Lout, and the reference luminance inside the tunnel is denoted as Lin; the filtered effective correlated color temperature outside the tunnel is denoted as Cout, and the reference correlated color temperature inside the tunnel is denoted as Cin. In an alternative embodiment, illuminance can also be collected first and the corresponding equivalent luminance can be calculated.

[0037] Preferably, the target brightness Li of each control zone Target-related color temperature Ci Given by the monotonic constraint transition function: Li = Lin + (Lout - Lin) × fL(xi) Ci = Cin + (Cout - Cin) × fC(xi) Here, fL(x) and fC(x) are both monotonic functions that continuously change from 1 to 0 (i.e., as xi increases, fL(xi) and fC(xi) gradually decrease from 1 to 0), and can be exponential functions, logistic functions, piecewise cubic spline functions, or combinations thereof. As an example, the following normalized exponential form can be used: f(x)=(e^(-ax)-e^(-a)) / (1-e^(-a)) Here, α is a curve shape parameter, preferably ranging from 1 to 5. By adjusting α, the rate of change of brightness transition and correlated color temperature transition in different segments can be altered.

[0038] Preferably, determining the first driving state of the first electrochromic color-changing layer and the comprehensive color residual of the target transmitted light based on the target visible light transmittance includes: Obtain device status parameters; wherein, device status parameters include at least one of device temperature, aging correction factor, switching history parameters, and accumulated drive charge; Based on the device state parameters and the target visible light transmittance, the first driving state of the first electrochromic color-changing layer and the target transmitted light comprehensive color residual are determined using the target coupling calibration sub-model.

[0039] In this way, by acquiring the device state parameters of each control zone (including at least one of device temperature, aging correction coefficient, switching history parameters, and accumulated driving charge), and based on these device state parameters and the target visible light transmittance, the first driving state of the first electrochromic color-changing layer and the resulting target transmitted light comprehensive color residual are determined using the target coupling calibration sub-model. This ensures that the determination of the first driving state and the target transmitted light comprehensive color can fully consider the current actual working state and aging degree of the device, avoiding open-loop control errors caused by device temperature drift, aging decay, or differences in usage history. This achieves accurate positioning of the first layer driving state and accurate prediction of the color shift it causes, ensuring the stability and long-term adaptability of the transmitted light comprehensive color control (i.e., transmitted light comprehensive color residual).

[0040] It is understandable that the device state parameters characterize the state parameters of related devices in the shading canopy, such as the smart glass panel.

[0041] Preferably, based on device state parameters and target visible light transmittance, the first driving state of the first electrochromic color-changing layer and the target transmitted light comprehensive color residual are determined using a target coupling calibration sub-model, including: Obtain the incident spectral conditions; wherein, the incident spectral conditions include at least two of the following: the correlated color temperature range outside the cave, the solar altitude angle range, the irradiance level range, the cloud cover level range, and the lighting condition category inside the cave; Based on the incident spectrum conditions, the corresponding coupling calibration sub-model is called as the target coupling calibration sub-model; Based on the device state parameters and the target visible light transmittance, the first driving state of the first electrochromic color-changing layer and the target transmitted light comprehensive color residual are determined using the target coupling calibration sub-model.

[0042] In this way, by acquiring the incident spectral conditions (including at least two of the following: the correlated color temperature range outside the cave, the solar altitude angle range, the irradiance level range, the cloud cover level range, and the lighting condition category inside the cave), and then calling the corresponding coupling calibration sub-model as the target coupling calibration sub-model based on the incident spectral conditions, and combining the device state parameters and the target visible light transmittance to determine the first driving state and the comprehensive color residual of transmitted light, the determination of the first driving state and the comprehensive color residual of transmitted light of the first electrochromic color tone layer can be model-matched to the current actual spectral environment. This avoids the model mismatch problem caused by different optical responses in the same driving state due to changes in spectral conditions (such as sunny days versus cloudy days, noon versus evening, and the on / off state of the cave lighting). Thus, adaptive and precise control under different spectral conditions is achieved, which can reduce the prediction error of visible light transmittance deviation (i.e., visible light transmittance residual) and comprehensive color residual of transmitted light, and improve the environmental adaptability and control stability of the system.

[0043] In this embodiment, the coupling calibration sub-model records at least the following relationships: The correspondence between the preset driving state of the first electrochromic color-changing layer (i.e., the first driving state) and the comprehensive color residual of transmitted light (i.e., the comprehensive color residual of the target transmitted light); The reverse influence of the second electrochromic spectral selection layer compensation driving state (i.e. the second driving state) on the visible light transmittance of the smart glass panel, and the range of feasible driving combinations of the first electrochromic dimming layer driving state and the second electrochromic spectral selection layer driving state under the constraints of the current incident spectral conditions and device state correction parameters. The feasible driving combination range refers to the selectable driving state combination of the first electrochromic color-changing layer and the second electrochromic spectral selection layer under the current operating conditions, which simultaneously satisfies the device driving constraints, target transmittance constraints, and target transmitted light comprehensive color constraints.

[0044] In this embodiment, the coupling calibration model M includes coupling calibration sub-models Mk corresponding to multiple incident spectral conditions k. Based on at least two of the following: external correlated color temperature, solar altitude angle, irradiance level, cloud cover level, and internal lighting condition category, the category to which the current incident spectrum belongs is determined, i.e., the incident spectral condition is determined, and then the corresponding coupling calibration sub-model Mk is called. If the current incident spectral condition is between two adjacent categories (i.e., between two incident spectral conditions), an equivalent coupling calibration relationship can be obtained by interpolation or weighting.

[0045] In this embodiment, the coupling calibration sub-model is determined in the following way: By combining factory coupling calibration, runtime state correction and transmitted light monitoring feedback correction, the driving state of the first electrochromic color-changing layer (i.e., the first driving state) and the driving state of the second electrochromic spectral selection layer (i.e., the second driving state) of each control zone are determined.

[0046] During factory calibration, under multiple first electrochromic color-changing layer driving states u1, multiple second electrochromic spectral selection layer driving states u2, and multiple representative incident spectral conditions k, the transmission spectrum τ(λ;u1,u2,k) of the smart glass plate 3 in the range of 380nm to 780nm is measured, and the corresponding visible light transmittance Tvis(u1,u2,k), correlated color temperature CCT(u1,u2,k), chromaticity coordinates (x,y)(u1,u2,k) and chromaticity shift Δuv(u1,u2,k) are calculated. Based on this, a coupling calibration model M is established to describe the two-layer coupling relationship.

[0047] In addition to recording conventional optical output parameters, the coupling calibration model M also records: the overall color residual of transmitted light caused by the preset driving state of the first electrochromic hue-enhancing layer (i.e., the first driving state), the reverse influence of the compensation driving state of the second electrochromic spectral selection layer (i.e., the second driving state) on the visible light transmittance of the smart glass plate, and the feasible driving combination range of the first electrochromic hue-enhancing layer driving state and the second electrochromic spectral selection layer driving state under the constraints of given incident spectral conditions and device state correction parameters.

[0048] The coupled calibration model M includes multiple coupled calibration sub-models Mk corresponding to multiple representative incident spectral conditions k. During runtime, the current incident spectrum category is determined based on at least two of the following: external correlated color temperature, solar altitude angle, irradiance level, cloud cover level, and internal lighting condition category. The corresponding coupled calibration sub-model Mk is then invoked. When the measured condition lies between two adjacent categories, an equivalent coupled calibration relationship can be obtained using interpolation or weighting.

[0049] To improve adaptability during operation, each coupled calibration sub-model Mk further records one or more of the following: device temperature correction coefficient, aging correction coefficient, switching history parameters, and accumulated driving charge, as necessary device state correction parameters for determining the second-layer compensation driving state and the first-layer reverse correction driving state; haze, reflectivity, and color rendering index can be used as additional evaluation parameters.

[0050] The feasible driving combination range refers to the selectable combination of the first electrochromic color-changing layer driving state and the second electrochromic spectral selection layer driving state that can simultaneously satisfy the device driving constraints, target transmittance state constraints, target transmitted light comprehensive color parameter constraints, and partition continuity constraints under the current incident spectral conditions and device state correction parameter constraints.

[0051] At least one representative control zone (i.e., a key control zone) is equipped with a transmitted light monitoring unit to measure the correlated color temperature, chromaticity coordinates, and / or chromaticity offset Δuv of the transmitted light after passing through the first electrochromic color-changing layer and the second electrochromic spectral selection layer. Measured residual information is generated based on the difference between the measured transmitted light data (i.e., the actual transmitted light composite color parameters within the measured transmitted light data) and the transmitted light composite color parameters (i.e., the transmitted light composite color residual). Furthermore, the measured residual information can be corrected by combining the difference between the measured transmitted light data and the model prediction results (i.e., the transmitted light composite color residual), and the measured residual information can be compared with the model prediction residual to perform online correction of the compensation drive state of the second electrochromic spectral selection layer and / or the local parameters of the coupled calibration model M. The correction results are then used for subsequent control zones and / or the next control cycle under similar operating conditions.

[0052] Preferably, combined with Figure 2As shown, this disclosure provides a flowchart illustrating a method for correcting a first driving state and a second driving state. The method corrects the first driving state based on a reverse influence relationship, and controls a first electrochromic tone-changing layer and a second electrochromic tone-changing layer based on the corrected first driving state and the second target driving state, including: Step S201: Based on the inverse relationship between the device state correction parameters and the second driving state on visible light transmittance, the first driving state is corrected to obtain the corrected first driving state.

[0053] In this embodiment, the device state correction parameters are involved in determining the second driving state of the second electrochromic spectral selection layer and in the online correction of the reverse correction driving state of the first electrochromic chromatic light-emitting layer.

[0054] Step S202: Based on the corrected first driving state, control the first electrochromic color layer and the second driving state to control the second electrochromic color layer; collect the current transmitted light measurement data of the key control partition and the transmitted light comprehensive color residual corresponding to the corrected first driving state; wherein, the transmitted light measurement data includes the actual transmitted light comprehensive color residual and the actual visible light transmittance.

[0055] Step S203: Determine the visible light transmittance residual based on the comprehensive color residual of transmitted light and the current actual comprehensive color residual of transmitted light, and determine the visible light transmittance residual based on the target visible light transmittance and the actual visible light transmittance.

[0056] Understandably, when calculating the visible light transmittance residual, the difference between the target visible light transmittance and the actual visible light transmittance corresponding to the key control zone is calculated.

[0057] In step S204, if the visible light transmittance residual and / or the corresponding transmitted light comprehensive color residual are less than the corresponding preset threshold, the second driving state is updated based on the corrected first driving state, and steps S201 to S204 are returned to be executed until the visible light transmittance residual and the corresponding transmitted light comprehensive color residual are both less than the corresponding preset threshold. The first electrochromic tone dimming layer is controlled based on the current corrected first driving state and the second electrochromic tone dimming layer is controlled based on the current second driving state.

[0058] In this way, the first driving state is corrected by the inverse influence of the second driving state on visible light transmittance, resulting in a corrected first driving state. This achieves decoupling correction between the first and second layers, effectively avoiding coupling errors caused by the second layer's color shift compensation leading to transmittance deviation from the target. The first layer is controlled by the corrected first driving state, and the second layer is controlled based on the second driving state. The system collects current measured transmitted light data (including actual transmitted light composite color residual and actual visible light transmittance) and the transmitted light composite color residual corresponding to the corrected first driving state, providing a dual data source of model predictions and actual feedback values ​​for subsequent residual judgment. The first and second driving states are then iteratively updated using the composite color residual deviation and visible light transmittance residual until both are less than a threshold. This forms a closed-loop iterative optimization mechanism of inverse correction, measured feedback, dual residual judgment, and iterative update, ensuring that each control zone simultaneously meets the requirements for brightness transition accuracy and transmitted light color quality during operation, achieving a small deviation in visible light transmittance and stable control of the transmitted light composite color.

[0059] In this embodiment, when there are multiple driving state combinations that satisfy both the visible light transmittance residual and the corresponding transmitted light comprehensive color residual being less than a preset threshold, the driving state combination with smaller driving change, smoother transition between adjacent control zones, lower chromaticity shift, and smaller device state correction is selected as the final driving state combination.

[0060] Preferably, a method for coupling compensation control of a tunnel entrance / exit shading canopy further includes: Based on partition continuity constraints, change rate limits, update thresholds, and the shortest execution update interval rule, the corrected first and second driving states of each control partition are smoothed. For each control zone, the first electrochromic tone layer is controlled based on the first drive state after smoothing, and the second electrochromic tone layer is controlled based on the second drive state after smoothing.

[0061] In this way, by using partition continuity constraints to limit the difference in driving states between adjacent control partitions, sudden changes in brightness and color temperature caused by abrupt changes in driving states between partitions are avoided, achieving a continuous visual transition along the driving direction. By using rate-of-change constraints to limit the change in driving states per unit time, glass flicker and device stress damage caused by excessively rapid driving changes are prevented, improving visual comfort and device reliability. Using update thresholds, the current driving state remains unchanged as long as the difference between the current actual visible light transmittance and the current target visible light transmittance does not exceed the transmittance update threshold, avoiding frequent and meaningless driving due to small fluctuations, thus extending device lifespan. Using the shortest execution update interval to limit the minimum time interval between two adjacent driving state updates ensures that the electrochromic material has sufficient time to complete its response, avoiding command conflicts and state oscillations. Based on this, for each control partition, the first layer is controlled based on the smoothed first driving state, and the second layer is controlled based on the smoothed second driving state. This ensures that each control partition maintains smooth brightness transitions, continuous color temperature transitions, and stable and orderly driving actions throughout operation, thereby improving operational stability, visual comfort, and device durability.

[0062] For example, in a tunnel entrance / exit shading canopy coupling compensation control method, during operation, for the i-th control zone, based on the target brightness Li... By combining the color parameters of the target transmitted light with those of the target, the target transmittance state Ti is first calculated. By combining the coupling calibration sub-model Mk corresponding to the current incident spectral conditions, the device state correction parameters, and the transmission light monitoring feedback of the representative control partition, the corresponding first-layer preset driving state and second-layer compensation driving state are determined.

[0063] In the coupled calibration sub-model Mk, the device state correction parameters are combined to determine the target transmittance state Ti. The first layer preset driving state u1i(pre) is determined, and the transmitted light composite color residual caused by the first layer preset driving state u1i(pre) is read or predicted. The transmitted light composite color residual is preferably at least one of correlated color temperature deviation, chromaticity coordinate deviation, and chromaticity offset Δuv.

[0064] Subsequently, the comprehensive color residual of transmitted light caused by the first layer preset driving state u1i(pre) is used as the compensation object. Combined with the reverse influence relationship of the second electrochromic spectral selection layer 35 on the visible light transmittance, the device state correction parameters, the transmitted light monitoring feedback, and the range of feasible driving combinations under the current operating conditions, the second layer compensation driving state u2i(comp) is determined.

[0065] After determining the second-layer compensation driving state u2i(comp), the first-layer preset driving state u1i(pre) is reverse-corrected based on the reverse influence of the second-layer compensation driving state u2i(comp) on the visible light transmittance and the device state correction parameters, so as to obtain the first-layer corrected driving state u1i. Then, based on the corrected first-layer driving state, the transmitted light composite color residual is recalculated and the second-layer compensation driving state is updated. At the same time, the measured residual information is formed according to the difference between the measured transmitted light data and the target transmitted light composite color parameters, and the local parameters are updated by combining the difference between the measured transmitted light data and the model prediction results, until |Tvis(u1,u2,k)-Ti | and the overall color error simultaneously meet the preset threshold.

[0066] When multiple driving state combinations can satisfy the target transmittance state and the comprehensive color parameters of the target transmitted light, the driving state combination with smaller driving change, smoother transition between adjacent zones, lower chromaticity offset Δuv, and smaller device state correction is selected as the final output.

[0067] In this embodiment, the reverse correction can be performed once or in multiple iterations. When at least one key control partition is equipped with a transmitted light monitoring unit, the measured residual information formed by the measured transmitted light data is compared with the model prediction results, and the local parameters in the second-layer compensation driving state u2i(comp) and / or the coupled calibration sub-model Mk are corrected accordingly.

[0068] In another embodiment, if the current device temperature, aging degree, or switching history deviates from the factory calibration conditions, the corresponding device state correction parameters are introduced first to perform online correction of the first layer correction drive state u1i and the second layer compensation drive state u2i(comp) to reduce the drift error caused by long-term operation.

[0069] Another example is the combination of Figure 3 and Figure 4 As shown, this disclosure provides another method for coupling compensation control of tunnel entrance and exit shading canopies, including: Step S301: Collect measured data of transmitted light from outside the cave, outside the cave correlated color temperature, inside the cave reference brightness, inside the cave reference correlated color temperature, and at least one representative control zone, and perform filtering, anomaly removal, and status assessment on the collected data.

[0070] Step S302: Based on the position of each control zone in the shading canopy, and combining the external light environment information and the internal reference light environment information, generate the target brightness, target transmitted light comprehensive color parameters, and corresponding target transmittance status for each control zone.

[0071] Step S303: Based on the current incident spectral conditions, the corresponding coupling calibration sub-model is invoked, and the first-layer preset driving state (i.e., the first driving state) that satisfies the target transmittance state is determined in conjunction with the device state correction parameters. The comprehensive color residual of transmitted light corresponding to the first-layer preset driving state is obtained. Preferably, the comprehensive color residual of transmitted light is predicted by the coupling calibration sub-model. When setting up the transmitted light monitoring unit, the prediction result can be further corrected based on the measured transmitted light data of the representative control zone (i.e., the key control zone). Alternatively, the comprehensive color residual of transmitted light can also be obtained when the second electrochromic spectral selection layer is in the reference state or the baseline state.

[0072] Step S304: Taking the transmitted light composite color residual as the compensation object, the second-layer compensation driving state is determined by combining the reverse influence relationship of the second-layer driving on the visible light transmittance, the feedback of the transmitted light measured data, and the range of feasible driving combinations under the current operating conditions; the measured residual information is formed based on the difference between the transmitted light measured data and the target transmitted light composite color parameter, and in one embodiment, the second-layer compensation driving state and / or the local parameters of the coupled calibration sub-model are corrected by combining the difference between the transmitted light measured data and the model prediction results.

[0073] Step S305: Based on the reverse influence of the second layer compensation driving state on visible light transmittance and the device state correction parameters, reverse correction is performed on the first layer preset driving state, and the first and second layer driving states are iteratively updated as necessary until the transmittance error and the comprehensive color error simultaneously meet the threshold.

[0074] Step S306: After applying partition continuity constraints, change rate limits, update thresholds and minimum execution update intervals to the final driving state, the data is sent to the corresponding partition driving unit to form a continuous brightness transition and a comprehensive color transition of transmitted light.

[0075] Step S307: When a sensor malfunction, power supply malfunction, communication malfunction, or drive malfunction is detected, the smart glass panel enters a preset safety state and outputs an alarm.

[0076] In a preferred embodiment, update criteria are set for the first layer and the second layer respectively: when the target transmittance deviation corresponding to the first layer does not exceed the transmittance update threshold, the current driving state of the first layer remains unchanged; when the comprehensive color error corresponding to the second layer does not exceed the comprehensive color update threshold, the current driving state of the second layer remains unchanged.

[0077] In another preferred embodiment, the preset safety state includes maintaining the most recent stable driving state, switching to a safety state corresponding to medium transmittance and neutral comprehensive color parameters, or switching to a preset manual intervention state; the specific state can be adjusted according to the tunnel type, season, maintenance strategy and power supply conditions.

[0078] Preferably, a method for coupling compensation control of a tunnel entrance / exit light-shielding canopy further includes: when a sensor malfunction, power supply malfunction, communication malfunction, or drive malfunction is detected, causing the smart glass panel to enter a preset safety state and output an alarm. The preset safety state includes at least one of the following: maintaining the most recent stable drive state, switching to a safety state corresponding to medium transmittance and neutral comprehensive color parameters, or switching to a preset manual intervention state. Combination Figure 5 As shown, this disclosure provides a tunnel entrance / exit shading canopy coupling compensation control system, including: The sunshade has multiple control zones along the driving direction. Each control zone is equipped with a smart glass panel. The smart glass panel includes a first electrochromic color-changing layer for adjusting the visible light transmittance and a second electrochromic color-changing layer for adjusting the overall color parameters of the transmitted light. The main control module is used to implement a coupling compensation method for a tunnel entrance / exit shading canopy as described above.

[0079] The tunnel entrance / exit light-shielding canopy coupling compensation control system provided in this disclosure collects light environment information inside and outside the tunnel, as well as measured transmitted light data from key control zones, to determine the desired visible light transmittance for each control zone, i.e., obtain the target visible light transmittance. This ensures a smooth brightness transition for each control zone, reducing visible light transmittance deviation at the source. Based on the target visible light transmittance of each control zone, the first driving state of the first electrochromic color-changing layer of the smart glass panel and its corresponding target transmitted light comprehensive color residual are determined. Then, combining the influence of the driving state of the second electrochromic color-changing layer on the visible light transmittance of the smart glass panel (i.e., the inverse influence relationship), the measured transmitted light data from key control zones, and the target transmitted light comprehensive color residual, the second driving state of the second electrochromic color-changing layer is determined. Based on the inverse influence relationship, the first driving state is then corrected, forming a synergistic control of compensation and inverse correction, thereby effectively improving the control stability of the transmitted light comprehensive color. In this way, by controlling the first and second electrochromic color layers corresponding to the corrected first and second driving states of each control zone, the deviation of visible light transmittance of each control zone can be reduced, and the control stability of the overall color of transmitted light can be improved.

[0080] For example, a light-shading canopy is disposed outside the tunnel entrance and / or in the transition area above the entrance and exit. The light-shading canopy is divided into at least four control zones along the driving direction. Several smart glass panels are disposed in each control zone. Each smart glass panel includes at least a first electrochromic color-changing layer for adjusting the broadband transmittance of visible light and a second electrochromic spectral selection layer for reversibly selectively adjusting the transmittance of at least one sub-band of visible light. The first electrochromic color-changing layer and the second electrochromic spectral selection layer are respectively provided with independent electrode leads and are driven by independent driving channels.

[0081] In this embodiment, the sunshade is divided into 4 to 12 control zones along the driving direction; multiple smart glass panels in each control zone are connected in parallel to the same zone drive unit.

[0082] For example, the central control module includes a central control box, a zone drive unit, an external light environment sensor assembly, an internal light environment sensor assembly, and a transmitted light monitoring unit. The external light environment sensor assembly, the internal light environment sensor assembly, the transmitted light monitoring unit, and the zone drive unit are all communicatively connected to the central control box, and the zone drive unit is electrically connected to the smart glass panel. The central control box includes a processor and a memory. The memory stores multiple coupled calibration sub-models and their local correction parameters corresponding to representative incident spectral conditions. An external light environment sensor assembly is used to collect external light environment information; an internal light environment sensor assembly is used to collect internal light environment information; a transmitted light monitoring unit is used to collect measured transmitted light data for key control zones; and a zone driving unit is used to control the driving state of the first and second electrochromic color-changing layers in each control zone. The smart glass panel, from the outside in, comprises an outer protective layer, an outer glass substrate, a first electrochromic color-changing layer, an interlayer adhesive layer, a second electrochromic spectral selective layer, an inner glass substrate, and an inner protective layer. A sealing structure is provided around the panel to prevent water vapor infiltration. The second electrochromic spectral selective layer reversibly adjusts the transmittance in the 430nm to 500nm wavelength band and / or the 580nm to 650nm wavelength band to compensate for the overall color shift in transmitted light caused by the first electrochromic color-changing layer.

[0083] Another example, combined Figure 6 and Figure 7 As shown, the sunshade canopy is located in front of and above the tunnel entrance in the transition area. The canopy structure is formed by an outer arch frame 1 and an inner arch frame 2, which together with the maintenance walkway 5 and the foundation base 6 achieve structural fixation and daily operation and maintenance. The sunshade canopy is divided into multiple control zones along the driving direction, preferably 4 to 12 control zones. Several smart glass panels 3 are installed in each control zone to cover the upper and lateral transmission areas corresponding to the main field of view when the vehicle enters the tunnel.

[0084] To reduce the complexity of engineering implementation, in one embodiment, multiple smart glass panels 3 within the same control zone are connected to the same zone drive unit 71 in parallel control to achieve zone-level collaborative control; in another embodiment, sub-zone drive channels can also be set up for local positional differences. The main control box 7 is communicatively connected to each zone drive unit 71 and electrically connected to the external light environment sensor assembly 9 and the internal light environment sensor assembly 4. The transmitted light monitoring unit 72 is located on the downstream side of the light transmission of at least one representative control zone, preferably installed on the support structure inside the shading canopy near the rear side of the representative control zone, and is communicatively connected to the main control box 7. It is used to collect the measured transmitted light data after the smart glass panel 3 of the control zone has acted upon it; the main control box 7 forms measured residual information based on the difference between the measured transmitted light data and the target transmitted light comprehensive color parameters; in one embodiment, the difference between the measured transmitted light data and the model prediction results can also be used to correct the compensation drive state of the second electrochromic spectral selective layer and / or couple the calibration model parameters.

[0085] In terms of power supply, solar photovoltaic panels 8 and solar energy storage devices 81 can be installed on the top of the shade canopy to power the main control box 7, the zone drive unit 71 and the sensor components; alternatively, the mains power or tunnel power distribution system can be used for power supply, and lightning protection grounding and surge protection devices can be configured.

[0086] Combination Figure 8 As shown, the smart glass panel 3 adopts a dual electrochromic composite structure, which, from the outside to the inside, includes an outer protective layer 31, an outer glass substrate 32, a first electrochromic color-changing layer 33, an interlayer adhesive layer 34, a second electrochromic spectral selection layer 35, an inner glass substrate 36, and an inner protective layer 37. A peripheral sealing structure 310 is provided around the panel to prevent moisture penetration and ensure long-term stability. The outer protective layer 31 is preferably a low-reflection, anti-fouling, and weather-resistant coating; the outer glass substrate 32 and the inner glass substrate 36 are preferably made of tempered glass, semi-tempered glass, or laminated safety glass. The interlayer adhesive layer 34 is preferably made of PVB, EVA, or an ion-exchange interlayer.

[0087] The first electrochromic dimming layer 33 serves as an EC-1 (electrochromic) dimming unit, primarily used to adjust visible light transmittance. It preferably employs an inorganic electrochromic material approach, such as one or more of WO3, MoO3, NbOx, TiO2-x, Prussian blue, and their composites; alternatively, PEDOT, PProDOT, polythiophene derivatives, viologen polymers, and their composites may also be used. The counter electrode layer preferably uses NiOx, Prussian blue, or an ion storage layer complementary to the main electrochromic layer. The first ion conductor layer may be a Li+ conductive solid electrolyte, a gel electrolyte, or a Ta2O5 ion conductor layer.

[0088] The second electrochromic spectral selection layer 35, as an EC-2 spectral selection unit, is mainly used to reversibly adjust the transmittance of at least one sub-band of visible light, thereby changing the correlated color temperature and / or chromaticity coordinates of the transmitted light, without significantly increasing haze. This layer can adopt any of the following approaches: first, using an organic electrochromic polymer layer with visible light selective absorption characteristics; second, using a viologen-based electrochromic filter layer; third, using a composite filter layer composed of electrochromic materials and non-redox dyes, wherein the non-redox dyes are used to form auxiliary selective absorption in the blue light band and / or red-orange light band; fourth, using a microcavity electrochromic filter structure based on a metal reflective layer and an electrochromic layer. Preferably, the second electrochromic spectral selection layer 35 reversibly adjusts the transmittance in the 430nm to 500nm band and / or the 580nm to 650nm band.

[0089] In one embodiment, the second electrochromic spectral selective layer 35 adopts a sandwich structure of ITO transparent conductive layer / organic selective electrochromic polymer layer / gel electrolyte / counter electrode / glass substrate. The organic selective electrochromic polymer layer is preferably a composite system composed of PEDOT derivatives and viologen compounds, or a composite system composed of polythiophene derivatives and non-redox dyes. The non-redox dyes preferably exhibit auxiliary selective absorption in the 430nm to 500nm wavelength range and / or the 580nm to 650nm wavelength range, thereby expanding the range of adjustable transmitted light correlated color temperature while maintaining low haze and high color rendering.

[0090] In another embodiment, the second electrochromic spectral selective layer 35 can also be a microcavity electrochromic filter structure composed of an ITO transparent conductive layer / WO3 electrochromic layer / dielectric layer / thin metal reflective layer, which can reversibly adjust the transmittance of different sub-bands of visible light by changing the microcavity resonance conditions. For engineering applications, an organic selective electrochromic polymer composite system is preferred as the main route to balance process maturity, driving voltage requirements, adjustable color temperature range, and consistency of large-area fabrication.

[0091] The first electrochromic tone-lowering layer 33 and the second electrochromic spectral selection layer 35 are respectively provided with independent electrode leads 38 and 39, and are driven by the partitioned driving unit 71 through independent driving channels. Through independent driving, the broadband light reduction task undertaken by the first electrochromic tone-lowering layer 33 and the sub-band compensation task undertaken by the second electrochromic spectral selection layer 35 can be coupled and compensated in a coordinated manner, providing a hardware foundation for subsequent residual compensation and inverse correction.

[0092] In one embodiment, the performance parameters of the first electrochromic color-changing layer 33 and the second electrochromic spectral selection layer 35 can be adjusted according to the design speed of the tunnel entrance, the range of natural light variation outside the tunnel, the reference lighting conditions inside the tunnel, and the engineering installation area.

[0093] For example, the first electrochromic color-changing layer 33 has the ability to continuously adjust the visible light transmittance suitable for tunnel entrance scenarios. Its adjustment range preferably covers the brightness attenuation range required for the transition from strong light outside the tunnel to the inside. Its response time is preferably in the range of seconds to minutes to meet the control requirements of gradual dimming in the transition area at the tunnel entrance. The second electrochromic spectral selection layer 35 has the ability to continuously adjust the comprehensive color parameters of transmitted light. Its adjustable range preferably covers the target correlated color temperature or chromaticity difference range between natural light outside the tunnel and the reference light environment inside the tunnel. Its response time is preferably matched with that of the first electrochromic color-changing layer 33 to facilitate the coordinated control of transmittance adjustment and comprehensive color characteristic adjustment of transmitted light.

[0094] The intelligent glass panel 3 not only meets the requirements for brightness adjustment and comprehensive color parameter adjustment of transmitted light, but also takes into account low haze, low surface reflection, high color rendering and long service life, so as to meet the long-term engineering operation needs of tunnel entrances.

[0095] In one embodiment, the response time of the first electrochromic color-selective layer 33 for a small sample is preferably 3 to 15 seconds, and the response time of the engineered single-board is preferably 10 to 60 seconds; the response time of the second electrochromic spectral selective layer 35 for a small sample is preferably 3 to 20 seconds, and the response time of the engineered single-board is preferably 10 to 40 seconds. The correlated color temperature adjustment range preferably covers the common difference range between natural light outside the cave and reference lighting inside the cave. The above parameters can be adjusted according to the material system, board size, driving method, and installation environment, and do not constitute a limitation on the scope of protection of the present invention.

[0096] The external light environment sensor assembly 9 is preferably positioned in an open area in front of the shaded area to collect reference brightness and correlated color temperature outside the cave; the internal light environment sensor assembly 4 is preferably positioned on the reference cross-section inside the cave entrance to collect reference brightness and correlated color temperature inside the cave. Both types of sensors are preferably equipped with shades, field-of-view limiting structures, and fixed mounting brackets to avoid the influence of direct headlights, local reflections, and rainwater pollution on the measurement results. In an alternative embodiment, the sensors can also collect illuminance and convert it into equivalent brightness using a preset conversion relationship for subsequent control.

[0097] To further suppress transient disturbances, the sensor output signal, after entering the main control box 7, undergoes sequential processing steps including time averaging, median filtering, quantile filtering, and outlier removal. For sudden short-term headlight interference, localized high-reflection flicker, or single-point measurement anomalies, the main control box 7 can maintain the setpoint from the previous control cycle or perform gradual updates according to the rate of change limit.

[0098] In addition to the above-described embodiments, the present invention may also have the following variations: the intelligent glass panel may be arranged on the roof, side, or a combination of top and side; the second electrochromic spectral selective layer 35 may adopt a single-layer selective absorption structure or a multi-layer superimposed structure; the coupling calibration model may incorporate seasonal corrections, solar altitude angle corrections, tunnel lighting condition corrections, and field-of-view weight corrections for different vehicle models to improve control accuracy under different operating conditions. The location, number, and sampling cycle of the transmitted light monitoring unit can also be adjusted according to the length of the shading canopy, the number of zones, and the maintenance strategy.

[0099] Taking the entrance section of a one-way, two-lane mountain tunnel as an example, the sunshade is divided into 6 control zones along the driving direction. During operation, the external light environment sensor component 9 collects the external brightness and external correlated color temperature, while the internal light environment sensor component 4 collects the internal reference brightness and internal reference correlated color temperature. The main control box 7 generates the target brightness, target transmitted light comprehensive color parameters, and target transmittance status for each control zone based on the normalized position parameters of the 6 control zones.

[0100] When the current incident spectral conditions are detected to correspond to a clear sky with a high solar altitude angle, the main control box 7 calls the coupling calibration sub-model Mk corresponding to the condition. First, it determines the first-layer preset driving state that satisfies the target transmittance state for each control zone. Then, based on the comprehensive color residual of transmitted light, the transmission light monitoring feedback, and the device state correction parameters caused by the first-layer preset driving state, it determines the second-layer compensation driving state. Finally, it corrects the first-layer driving state based on the reverse influence of the second-layer compensation driving state on the visible light transmittance.

[0101] When the current incident spectrum condition is detected to switch to a cloudy day with a low solar altitude angle, the main control box 7 switches to another coupled calibration sub-model Mk, and combines the transmitted light monitoring results of the representative control zone and the device status correction parameters to correct the local parameters of the model, so as to achieve continuous brightness transition and comprehensive color transition of transmitted light along the direction from outside the cave to inside the cave under different weather, time period, temperature and usage cycle conditions.

[0102] Throughout the entire control process, no active light-emitting supplementary lighting device is installed inside the shading shed. The compensation amount of the second electrochromic spectral selection layer 35 is not directly given by the ambient light, but is determined in reverse by the comprehensive color residual of transmitted light caused by the first electrochromic color-changing layer 33.

[0103] This invention provides a computer-readable storage medium storing instructions that, when executed on a terminal device, cause the terminal device to perform the steps of a tunnel entrance / exit shading canopy coupling compensation control method as described above.

[0104] The computer-readable storage medium may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0105] The technical solutions of this disclosure can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes one or more instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of this disclosure. The aforementioned storage medium can be a non-transitory storage medium, including: a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and other media capable of storing program code; it can also be a transient storage medium.

[0106] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of the present invention.

Claims

1. A method for coupled compensation control of a tunnel entrance / exit shading canopy, characterized in that, include: Step S101: Collect external light environment information, internal light environment information, and measured color transmittance data of at least one key control zone of the shading canopy at the tunnel entrance; wherein, the shading canopy is provided with multiple control zones along the driving direction, and each control zone is provided with a smart glass panel, the smart glass panel including a first electrochromic color-changing layer for adjusting visible light transmittance and a second electrochromic color-changing layer for adjusting the comprehensive color parameters of transmitted light; Step S102: Based on the external light environment information and the internal light environment information of the cave, determine the target visible light transmittance of each control zone; Step S103: For each control zone, based on the target visible light transmittance, determine the first driving state of the first electrochromic color-changing layer and the target transmitted light composite color residual, and Based on the reverse influence relationship, measured data of transmitted light from key control zones, and the comprehensive color residual of target transmitted light, the second driving state of the second electrochromic tone-setting layer is determined, and The first driving state is corrected based on the reverse influence relationship, and the first electrochromic color-changing layer is controlled based on the corrected first driving state and the second target driving state is controlled to control the second electrochromic color-changing layer; wherein, the reverse influence relationship characterizes the influence of the driving state of the second electrochromic color-changing layer on the visible light transmittance of the smart glass panel.

2. The method according to claim 1, characterized in that, The determination of the target visible light transmittance for each control zone based on external and internal light environment information includes: Based on the external and internal light environment information of the cave, and combined with the location of each control zone, the target brightness and target visible light transmittance of each control zone are determined; wherein, the target visible light transmittance includes at least one of the target correlated color temperature, target chromaticity coordinates, and target chromaticity offset; For each control zone, the target visible light transmittance is determined based on the target brightness and the target visible light transmittance.

3. The method according to claim 2, characterized in that, The external light environment information includes the effective brightness and reference correlated color temperature outside the cave, and the internal light environment information includes the effective brightness and reference correlated color temperature inside the cave; the target visible light transmittance includes the target correlated color temperature; the determination of the target brightness and target visible light transmittance of each control zone based on the external and internal light environment information, combined with the location of each control zone, includes: For each control zone, the location parameters are acquired and normalized to obtain the normalized location parameters. Based on the effective brightness outside the hole, the reference correlated color temperature outside the hole, the effective brightness inside the hole, the reference correlated color temperature inside the hole, and the normalized location parameters, the target brightness and target correlated color temperature are determined using the following function: Li = Lin + (Lout - Lin) × fL(xi) Eat = Cin+(Cout-Cin)×fC(xi) Among them, Li Ci represents the target brightness The target correlated color temperature is represented by Lout, the effective brightness outside the hole is represented by Lin, the reference brightness inside the hole is represented by Cout, the effective correlated color temperature outside the hole is represented by Cin, the reference correlated color temperature inside the hole is represented by fL(x) and fC(x), which are both pre-constructed monotonic functions, and xi represents the normalized position parameters.

4. The method according to claim 1, characterized in that, The determination of the first driving state of the first electrochromic color-changing layer and the comprehensive color residual of the target transmitted light based on the target visible light transmittance includes: Obtain device status parameters; wherein, device status parameters include at least one of device temperature, aging correction factor, switching history parameters, and accumulated drive charge; Based on the device state parameters and the target visible light transmittance, the first driving state of the first electrochromic color-changing layer and the comprehensive color residual of the target transmitted light are determined using the target coupling calibration sub-model.

5. The method according to claim 4, characterized in that, The determination of the first driving state of the first electrochromic color-changing layer and the comprehensive color residual of the target transmitted light using a target coupling calibration sub-model based on device state parameters and target visible light transmittance includes: Obtain the incident spectral conditions; wherein, the incident spectral conditions include at least two of the following: the correlated color temperature range outside the cave, the solar altitude angle range, the irradiance level range, the cloud cover level range, and the lighting condition category inside the cave; Based on the incident spectrum conditions, the corresponding coupling calibration sub-model is called as the target coupling calibration sub-model; Based on the device state parameters and the target visible light transmittance, the first driving state of the first electrochromic color-changing layer and the comprehensive color residual of the target transmitted light are determined using the target coupling calibration sub-model.

6. The method according to claim 1, characterized in that, The step of correcting the first driving state based on the reverse influence relationship, and controlling the first electrochromic tone layer and the second target driving state based on the corrected first driving state, includes: Step S201: Based on the inverse relationship between the device state correction parameters and the second driving state on visible light transmittance, the first driving state is corrected to obtain the corrected first driving state. Step S202: Based on the corrected first driving state, control the first electrochromic color layer and the second driving state to control the second electrochromic color layer; collect the current transmitted light measurement data of the key control partition and the transmitted light comprehensive color residual corresponding to the corrected first driving state; wherein, the transmitted light measurement data includes the actual transmitted light comprehensive color residual and the actual visible light transmittance. Step S203: Determine the visible light transmittance residual based on the overall color residual of transmitted light and the current actual overall color residual of transmitted light, and determine the visible light transmittance residual based on the target visible light transmittance and the actual visible light transmittance; In step S204, if the visible light transmittance residual and / or the corresponding transmitted light comprehensive color residual are less than the corresponding preset threshold, the second driving state is updated based on the corrected first driving state, and steps S201 to S204 are returned to be executed until the visible light transmittance residual and the corresponding transmitted light comprehensive color residual are both less than the corresponding preset threshold. The first electrochromic tone dimming layer is controlled based on the current corrected first driving state and the second electrochromic tone dimming layer is controlled based on the current second driving state.

7. The method according to claim 1, characterized in that, Also includes: Based on partition continuity constraints, change rate limits, update thresholds, and the shortest execution update interval rule, the corrected first and second driving states of each control partition are smoothed. For each control zone, the first electrochromic tone layer is controlled based on the first drive state after smoothing, and the second electrochromic tone layer is controlled based on the second drive state after smoothing.

8. A coupling compensation control system for a tunnel entrance / exit shading canopy, characterized in that, include: The sunshade has multiple control zones along the driving direction. Each control zone is equipped with a smart glass panel. The smart glass panel includes a first electrochromic color-changing layer for adjusting the visible light transmittance and a second electrochromic color-changing layer for adjusting the overall color parameters of the transmitted light. The main control module is used to implement the coupling compensation method for the tunnel entrance and exit shading canopy as described in any one of claims 1 to 7.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores instructions that, when executed on a terminal device, cause the terminal device to perform the steps of a tunnel entrance / exit shading canopy coupling compensation control method as described in any one of claims 1 to 7.

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