A decision-making method for determining optimal dimming mode and lighting parameters

Abstract

The application discloses a decision method for determining optimal dimming mode and lighting parameters, relates to the technical field of tunnel lighting, and comprises the following steps: if there is no vehicle in a highway tunnel, a dark light mode of a tunnel lighting lamp is adopted, otherwise, a dimming mode of the tunnel lighting lamp is adopted; the dimming mode of the tunnel lighting lamp comprises a daytime dimming mode and a nighttime dimming mode; for the daytime dimming mode, the dimming flow of an entry section 1, an entry section 2, a transition section 1 and a transition section 2 of the highway tunnel is obtained based on the relationship between brightness and power. Under the premise of guaranteeing driving safety and meeting tunnel lighting specifications, the optimal dimming mode is determined, the tunnel traffic flow condition, the brightness outside the tunnel, the tunnel structure, the reflectivity and the lighting lamp parameters are combined, the specific power required by the tunnel lighting specifications is accurately adjusted, relay nodes are not arranged in each interval section, the tunnel lighting energy consumption is greatly reduced, the service life of the lighting lamp is prolonged, and the cost is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel lighting, and in particular to a decision method for determining optimal dimming modes and lighting parameters. Background Art

[0002] Currently, highway tunnel lighting sections are designed to be divided into Entrance Section 1, Entrance Section 2, Transition Section 1, Transition Section 2, Basic Lighting Section, Exit Section 1, and Exit Section 2. To address these tunnel sections, highway tunnels employ an on-board intelligent dimming system and method for each lighting section within the tunnel. This method utilizes external tunnel brightness data, relayed by nodes within each section, combined with vehicle inspection information and the required brightness specifications for each lighting section, to achieve the appropriate brightness ratio for each lighting section.

[0003] This calculation method adjusts the power of lighting fixtures in various sections of the tunnel based on external brightness data and vehicle inspection information. However, in its current implementation, LED tunnel lights are illuminated according to the specified ratio, without considering lamp selection, layout, or other related parameters. The dimming ratio remains unspecific based on the tunnel's current conditions. Furthermore, the method fails to consider the reflectivity of different tunnel materials and their inherent structure, making it impossible to determine the optimal lighting mode within the tunnel and accurately adjust the power of the lighting fixtures.

[0004] Therefore, the current intelligent dimming of tunnel lighting has the following problems:

[0005] (1) The existing technology adopts the tunnel vehicle lighting mode, which uses a combination of an external tunnel brightness detector and an internal tunnel brightness detector, and requires the deployment of relay nodes in each lighting section. This results in a large amount of data transmission, resulting in high costs, complex operations, and long time-consuming use of the tunnel lighting vehicle intelligent dimming mode.

[0006] (2) In the tunnel vehicle lighting mode, the dimming mode is still based on the dimming ratio, which does not take into account the tunnel's own structure and reflective materials. It is not the optimal dimming mode and there is still room for energy saving. Summary of the Invention

[0007] The present invention aims to provide a decision-making method for determining the optimal dimming mode and lighting parameters to solve the problems of setting a fixed dimming ratio in advance for any tunnel, arranging multiple brightness detection nodes, complex data transmission and operation, and manual shutdown of tunnel lamps without following the tunnel design lighting standards, resulting in energy waste, high costs and safety hazards.

[0008] In order to solve the above problems, the technical solutions adopted by the present invention are as follows:

[0009] The present invention provides a decision method for determining an optimal dimming mode and lighting parameters, comprising:

[0010] If there is no car in the highway tunnel, the tunnel lighting will be in dimming mode; otherwise, the tunnel lighting will be in dimming mode.

[0011] The dimming mode of the tunnel lighting includes: turning off the lighting of the entrance section 2, transition section 2 and exit section 1. The power required for the lighting of the entrance section 1, transition section 1 and exit section 2 is the minimum starting power of the lighting;

[0012] The dimming modes of tunnel lighting include daytime dimming mode and nighttime dimming mode. In the daytime dimming mode and nighttime dimming mode, the basic lighting section, exit section 1 and exit section 2 use the standard power of the lighting lamps in the corresponding dimming mode as the required lighting power of their respective lighting lamps;

[0013] For the daytime dimming mode, the dimming process of the entrance section 1, entrance section 2, transition section 1 and transition section 2 of the highway tunnel includes the following: if the brightness value outside the previous tunnel is less than the brightness value at the highest power of the lighting lamp and is greater than or equal to the brightness value at the lowest starting power of the lighting lamp, then the required lighting power of the lighting lamp is calculated based on the current brightness value outside the tunnel; if the brightness value outside the previous tunnel is greater than or equal to the brightness value at the highest power of the lighting lamp, then the maximum power of the lighting lamp is used as the required lighting power of the lighting lamp; if the brightness value outside the previous tunnel is less than the brightness value at the lowest starting power of the lighting lamp, then the lowest starting power of the lighting lamp is used as the required lighting power of the lighting lamp;

[0014] For the night dimming mode, the dimming processes of the entrance section 1, entrance section 2, transition section 1 and transition section 2 of the highway tunnel all include: if the standard power of the lighting lamp in the current period is less than the minimum starting power of the lighting lamp, the minimum starting power of the lighting lamp will be used as the power required for the lighting of the lighting lamp; otherwise, the standard power of the lighting lamp in the night dimming mode of the corresponding section will be used as the power required for the lighting of the lighting lamp.

[0015] As a further description of the above technical solution:

[0016] In the daytime dimming mode, the standard power calculation models for the lighting lamps in the basic lighting segment, exit segment 1, and exit segment 2 are:

[0017]

[0018] In the nighttime dimming mode, the standard power calculation models for the lighting lamps in the basic lighting segment, exit segment 1, and exit segment 2 are:

[0019]

[0020] Among them, L 基本段标准 L is the reference value for the brightness design of the basic lighting segment. 夜间标准is the reference value for the design of nighttime lighting brightness, α is the road surface brightness conversion coefficient, S5, S6 and S7 are the lighting areas of the basic lighting section, exit section 1 and exit section 2 respectively, P 额定5 、P 额定6 and P 额定7 are the rated powers of the lighting fixtures for the basic lighting section, exit section 1, and exit section 2, respectively. N5, N6, and N7 are the numbers of lighting fixtures for the basic lighting section, exit section 1, and exit section 2, respectively. and are the total luminous flux of the lamps in the basic lighting section, exit section 1 and exit section 2, x is the corresponding value of the lighting arrangement in the tunnel, ρ1 is the wall reflectivity, and are the luminous flux of the lamps in the basic lighting section, exit section 1 and exit section 2 illuminating the side wall, ρ2 is the arch reflectivity, and They are the luminous flux of the lamps in the basic lighting section, exit section 1 and exit section 2 illuminating the side wall more than 2m long, and M is the lamp maintenance factor.

[0021] As a further description of the above technical solution: in the night dimming mode, the standard power calculation models of the lighting lamps in the entrance section 1, entrance section 2, transition section 1 and transition section 2 are respectively:

[0022]

[0023] Among them, S1, S2, S3 and S4 are the lighting areas of the lamps in the entrance section 1, entrance section 2, transition section 1 and transition section 2 respectively, P 额定1 、P 额定2 、P 额定3 and P 额定4 are the rated power of the lighting lamps of entrance section 1, entrance section 2, transition section 1 and transition section 2 respectively, and The total luminous flux of the lamps in entrance section 1, entrance section 2, transition section 1 and transition section 2 respectively, and The luminous flux of the lamps of entrance section 1, entrance section 2, transition section 1 and transition section 2 irradiating the side wall, and The luminous flux of the lamps in entrance section 1, entrance section 2, transition section 1 and transition section 2 irradiating the side wall more than 2m away.

[0024] As a further description of the above technical solution: in the daytime dimming mode, the calculation models for calculating the required lighting power of the lighting lamps in the entrance section 1, entrance section 2, transition section 1 and transition section 2 based on the current brightness value outside the tunnel are respectively:

[0025]

[0026] Among them, k is the reduction factor, L δ is the design standard value of the brightness outside the tunnel, and β is the ratio of the design standard value of the brightness outside the tunnel to the current brightness outside the tunnel.

[0027] As a further description of the above technical solution: for entrance section 1, entrance section 2, transition section 1, transition section 2, basic lighting section, exit section 1 and exit section, their respective lighting areas are equal to their respective road surface lengths multiplied by road surface widths.

[0028] As a further description of the above technical solution: for entrance section 1, entrance section 2, transition section 1, transition section 2, basic lighting section, exit section 1 and exit section, their respective luminous fluxes are calculated based on their respective lamp inclination angles, lamp installation heights and road surface widths.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] On the premise of ensuring driving safety and meeting tunnel lighting specifications, the optimal dimming mode is determined and the tunnel lighting parameters are accurately adjusted in combination with tunnel traffic flow conditions, external brightness, tunnel structure, reflectivity and lighting parameters to meet the specific power required by tunnel lighting specifications. There is no need to arrange relay nodes in each section, which greatly reduces tunnel lighting energy consumption, extends the service life of lamps and saves costs.

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more clearly understood, embodiments of the present invention are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 It is a schematic diagram of the lighting surface of the lighting sections of each highway tunnel;

[0034] Figure 2 This is a schematic diagram of the effective area of ​​tunnel illumination;

[0035] Figure 3 It is a curve chart that adjusts the light according to the actual brightness outside the tunnel;

[0036] Figure 4 This is the light distribution curve diagram of the entrance section 1 lamp of the implementation example. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0038] The present invention proposes a decision-making method for determining the optimal dimming mode and lighting parameters, so that tunnel lighting can determine the optimal dimming mode and lighting power parameters based on the brightness outside the tunnel and the tunnel's own structure and lighting fixture parameters, thereby achieving maximum energy saving, ensuring driving safety, and eliminating the "black hole effect" and "white hole effect" of the tunnel.

[0039] The decision-making method of the present invention is specifically as follows:

[0040] If there is no car in the highway tunnel, the tunnel lighting lamps are in dimming mode, otherwise, the tunnel lighting lamps are in dimming mode.

[0041] 1. Dim light mode of tunnel lighting

[0042] Whether it is daytime, late at night, or other time periods at night, the dimming mode of the tunnel lighting is the same, namely:

[0043] Turn off the lights of the entrance section 2, transition section 2 and exit section 1. The power required for the lighting of the entrance section 1, transition section 1 and exit section 2 is the minimum starting power of their respective lights.

[0044] 2. Dimming mode of tunnel lighting

[0045] (1) Night dimming mode

[0046] 1) About the basic lighting section, exit section 1 and exit section 2

[0047] The basic lighting section, exit section 1 and exit section 2 use the standard power of their respective lighting lamps in the night dimming mode as the required power for their respective lighting lamps.

[0048] In the nighttime dimming mode, the standard power calculation models for the lighting lamps in the basic lighting segment, exit segment 1, and exit segment 2 are:

[0049]

[0050] Among them, L 夜间标准 is the reference value for nighttime lighting brightness design, α is the road surface brightness conversion coefficient, S5, S6 and S7 are the lighting areas of the basic lighting section, exit section 1 and exit section 2 respectively. The lighting areas of the lighting sections of each highway tunnel are shown in the figure below. Figure 1As shown, S5 = L5 × W, S6 = L6 × W, S7 = L7 × W, L5, L6 and L7 are the road lengths of the basic lighting section, exit section 1 and exit section 2 respectively, W is the road width, P 额定5 、P 额定6 and P 额定7 The rated power of the lighting lamps for the basic lighting section, exit section 1 and exit section 2 respectively, is the total luminous flux that can be known after the lamp is determined, x is the corresponding value of the lighting arrangement in the tunnel, ρ1 is the wall reflectivity, and are the luminous flux of the lamps in the basic lighting section, exit section 1 and exit section 2 illuminating the side wall, ρ2 is the arch reflectivity, and They are the luminous flux of the lamps in the basic lighting section, exit section 1 and exit section 2 illuminating the side wall more than 2m long, and M is the lamp maintenance factor.

[0051] In one embodiment of the present invention, k=0.035, α=15lx / cd.㎡, M=0.7, ρ1=0.6, ρ2=0.1, and x=1 represents a staggered lighting arrangement in a tunnel.

[0052] It should be noted that nighttime includes late night and other time periods at night. For late night and other time periods at night, their coefficient brightness L 夜间标准 The values ​​are different. For example, at night from 19:00 to 23:00, the brightness of the whole cave is L 夜间标准 Take 2.5cd / m2, midnight to 4am, the whole cave brightness is L 夜间标准 Take 1.5cd / m2.

[0053] 2) About entry section 1, entry section 2, transition section 1 and transition section 2

[0054] If the standard power of the lighting lamp in the current period is less than the minimum starting power of the lighting lamp, the minimum starting power of the lighting lamp will be used as the power required for the lighting lamp; otherwise, the corresponding standard power of the lighting lamp will be used as the power required for the lighting lamp.

[0055] The calculation method of the standard power of the lighting lamp in the current period is: substitute the standard brightness value of the lighting in the current period into the corresponding formulas in formulas (8) to (11), and calculate the standard power of the lighting lamp in the current period in combination with the corresponding standard power calculation model.

[0056] The standard power calculation models for the lighting lamps in entrance section 1, entrance section 2, transition section 1, and transition section 2 are:

[0057]

[0058] Among them, L 夜间标准The reference value for the brightness design of nighttime lighting is shown in Figure 1. S1, S2, S3 and S4 are the lighting areas of the entrance section 1, entrance section 2, transition section 1 and transition section 2 respectively. The lighting areas of the lighting sections of each highway tunnel are shown in Figure 1. Figure 1 As shown, S1 = L1 × W, S2 = L2 × W, S3 = L3 × W, S4 = L4 × W, L1, L2, L3 and L4 are the road surface lengths of entrance section 1, entrance section 2, transition section 1 and transition section 2 respectively, P 额定1 、P 额定2 、P 额定3 and P 额定4 are the rated power of the lighting lamps of entrance section 1, entrance section 2, transition section 1 and transition section 2 respectively, and The total luminous flux of the lamps in entrance section 1, entrance section 2, transition section 1 and transition section 2 respectively, and The luminous flux of the lamps of entrance section 1, entrance section 2, transition section 1 and transition section 2 irradiating the side wall, and The luminous flux of the lamps in entrance section 1, entrance section 2, transition section 1 and transition section 2 irradiating the side wall more than 2m away.

[0059] Taking the data in Table 1 as an example, substitute it into formula (4), L 夜间标准 Take 2.5cd / m 2 ,have to:

[0060]

[0061] (2) Daytime dimming mode

[0062] 1) About the basic lighting section, exit section 1 and exit section 2

[0063] Similar to the nighttime dimming mode, during the day, the basic lighting segment, exit segment 1, and exit segment 2 use the standard power of their respective lighting lamps in the daytime dimming mode as the required power for their respective lighting lamps, which are:

[0064]

[0065]

[0066] Among them, L 基本段标准 Design reference value for brightness of basic lighting segment.

[0067] 2) About entry section 1, entry section 2, transition section 1 and transition section 2

[0068] If the brightness value outside the previous tunnel is less than the brightness value at the highest power of the lighting lamp (the rated power of the lamp, which can be known according to the lamp parameters) and is greater than or equal to the brightness value at the lowest starting power of the lighting lamp, the power required for the lighting lamp is calculated based on the current brightness value outside the tunnel.

[0069] The threshold of the tunnel lighting dimming mode is a key value for ensuring safe driving in the tunnel. This threshold is to ensure that when the outside brightness is low and the tunnel control optimally adjusts the lighting parameters, the brightness and lamp power value are guaranteed to ensure safe driving. We adjust the lamp power according to the current outside brightness of the tunnel. In one embodiment of the present invention, the curve diagram of dimming according to the current outside brightness of the tunnel is as follows: Figure 3 shown.

[0070] Depend on Figure 1 The graph shows that the lamp power in the enhanced sections (entrance sections 1, 2, transition sections 1, and 2) is proportional to the outside tunnel brightness. When the outside tunnel brightness falls below a certain value, the dimming algorithm calculates a very low lamp power for the enhanced sections. The current and voltage at this power value may not be sufficient to illuminate the lamps, posing a safety hazard to tunnel lighting. To address this, we propose the following dimming mode threshold research.

[0071] The calculation method of the brightness value at the highest power is: substitute the highest power into the corresponding formulas in formulas (8) to (11) to replace the power required for the lighting lamp, and calculate the brightness value in combination with the corresponding lighting lamp standard power calculation model.

[0072] Taking the entrance section 1 as an example, the design standard value of the brightness outside the cave is L δ =3000cd / m 2 , the maximum power of the entrance section 1 lamp is 200W, that is When the lighting of entrance section 1 is at the highest power, the brightness value of the lighting of entrance section 1 at the highest power is equivalent to L in the calculation formula of β. 当前隧道外亮度 Then, the brightness value L of the entrance section 1 lighting lamp at the highest power is calculated by formula (8): 入口1最高功率下的亮度值 , we can get:

[0073]

[0074] Similarly, the brightness value at the minimum starting power is calculated by substituting the minimum starting power into formulas (8) to (11) to replace the power required for the lighting lamp, and combining it with the corresponding standard power calculation model of the lighting lamp to calculate the brightness value.

[0075] Taking entrance section 1 as an example, if the minimum starting power of the lamp is 10W, that is, P 入口1日=10W, when the lighting of entrance section 1 is at the lowest starting power, the brightness value of the lighting of entrance section 1 at the lowest starting power is equivalent to L in the calculation formula of β 当前隧道外亮度 Then, the brightness value L of the entrance section 1 lighting lamp at the lowest starting power is calculated by formula (8): 入口1最高功率下的亮度值 , we can get:

[0076]

[0077] The calculation models for calculating the required power of the lighting lamps in entrance section 1, entrance section 2, transition section 1, and transition section 2 based on the current brightness value outside the tunnel are:

[0078]

[0079] Among them, k is the reduction factor, L δ is the design standard value of the brightness outside the tunnel, and β is the ratio of the design standard value of the brightness outside the tunnel to the current brightness outside the tunnel.

[0080] If the brightness value outside the front tunnel is greater than or equal to the brightness value at the highest power of the lighting lamp, the highest power of the lighting lamp shall be used as the power required for lighting.

[0081] If the brightness value outside the front tunnel is less than the brightness value at the lowest starting power of the lighting lamp, the lowest starting power of the lighting lamp shall be used as the power required for lighting of the lighting lamp.

[0082] Combine Figure 2 As shown, calculate the tunnel space utilization coefficient When combining the tunnel's own reflectivity, the lamp's light distribution curve and the lamp's installation method, we can know the lamp's tilt angle θ, the lamp's installation height OC, the lamp's illuminated road width BE (i.e., the road width W), and calculate the luminous flux of the lamp illuminating the side wall. Luminous flux of the lamp irradiating the side wall above 2m The effective luminous flux in a 2m high tunnel can be obtained, thereby calculating the space utilization coefficient that is consistent with the tunnel itself.

[0083] In one embodiment of the present invention, the lamp is installed at an elevation angle of θ = 30°, a height OC = 5.4m, and a road width BE = 10m. Figure 4 , we can know the light intensity at this elevation angle, and thus calculate The details are as follows:

[0084] The light distribution curve is for a 200W lamp at entrance section 1. When the lamp elevation angle is 30°, the light intensity in the vertical direction can be seen from the light distribution curve as follows: 30° =6200cd, calculate the luminous flux in the vertical direction at the point when the elevation angle is 30°,

[0085] So when you know the installation angle of the lamp, combined with the light distribution curve, you can know the light intensity at that angle. Combined with the definition of luminous intensity: Solid angle formula: dΩ=2π×sinθ×dθ;θ i -θ i+1 The formula for luminous flux within the angle area is: is the luminous flux in the θ direction, and Ω is the solid angle.

[0086] Combined with attachment Figure 2 , for example, the luminous flux of the FE side area is:

[0087]

[0088] The luminous flux of the AB side area is:

[0089]

[0090] Similarly, the luminous flux of the lamp illuminating the side walls in the vertical and horizontal directions can be calculated according to the installation height and angle of different tunnel lamps. Luminous flux of the lamp irradiating the side wall above 2m

[0091] In one embodiment of the present invention, the relevant parameters of the tunnel are shown in Table 1, and the parameters of the section lamps are shown in Table 2:

[0092] Table 1

[0093]

[0094] When the current brightness outside the cave is 2800 cd / ㎡, calculate β and put the above data into equations (2)-(8) to obtain the data in Table 2:

[0095] Table 2

[0096] Tunnel section Lamp power Entrance section 1 128.72W Entrance section 2 151.49W Transition 1 68.36W Transition 2 22.78W Basic lighting section 43.58W Exit section 1 32.84W Exit section 2 57.62W

[0097] The above calculation results show that based on the tunnel's own structure, tunnel reflectivity, lamp layout, and lamp parameters, the lamp power (the power required for lighting) can be adjusted in real time according to the detected brightness outside the tunnel combined with the lamp parameters, thus reaching the optimal decision on adjusting the lighting parameters.

[0098] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A decision method for determining optimal dimming mode and lighting parameters, characterized in that: include: The highway tunnel includes, from entrance to exit, entrance section 1, entrance section 2, transition section 1, transition section 2, basic section, exit section 1 and exit section 2; If there is no car in the highway tunnel, the tunnel lighting is in dimming mode; otherwise, the tunnel lighting is in dimming mode. The dimming mode of the tunnel lighting includes: turning off the lighting of the entrance section 2, transition section 2 and exit section 1. The power required for the lighting of the entrance section 1, transition section 1 and exit section 2 is the minimum starting power of the lighting; The dimming modes of tunnel lighting include daytime dimming mode and nighttime dimming mode. In the daytime dimming mode and nighttime dimming mode, the basic lighting section, exit section 1 and exit section 2 use the standard power of the lighting lamps in the corresponding dimming mode as the required lighting power of their respective lighting lamps; For the daytime dimming mode, the dimming process of the entrance section 1, entrance section 2, transition section 1 and transition section 2 of the highway tunnel includes the following: if the brightness value outside the previous tunnel is less than the brightness value at the highest power of the lighting lamp and is greater than or equal to the brightness value at the lowest starting power of the lighting lamp, then the required lighting power of the lighting lamp is calculated based on the current brightness value outside the tunnel; if the brightness value outside the previous tunnel is greater than or equal to the brightness value at the highest power of the lighting lamp, then the maximum power of the lighting lamp is used as the required lighting power of the lighting lamp; if the brightness value outside the previous tunnel is less than the brightness value at the lowest starting power of the lighting lamp, then the lowest starting power of the lighting lamp is used as the required lighting power of the lighting lamp; For the nighttime dimming mode, the dimming process for the entrance section 1, entrance section 2, transition section 1, and transition section 2 of the highway tunnel includes the following steps: if the standard power of the lighting lamp in the current time period is less than the minimum starting power of the lighting lamp, the minimum starting power of the lighting lamp is used as the required lighting power of the lighting lamp; otherwise, the standard power of the lighting lamp in the nighttime dimming mode of the corresponding section is used as the required lighting power of the lighting lamp; In daytime dimming mode, the standard power calculation models for the lighting lamps in the basic lighting segment, exit segment 1, and exit segment 2 are: In the nighttime dimming mode, the standard power calculation models for the lighting lamps in the basic lighting segment, exit segment 1, and exit segment 2 are: Among them, L 基本段标准 L is the reference value for the brightness design of the basic lighting segment. 夜间标准 is the reference value for the brightness design of nighttime lighting, α is the road surface brightness conversion coefficient, S5, S6 and S7 are the lighting areas of the basic lighting section, exit section 1 and exit section 2 respectively, P 额定5 、P 额定6 and P 额定7 are the rated powers of the lighting fixtures for the basic lighting section, exit section 1, and exit section 2, respectively. N5, N6, and N7 are the numbers of lighting fixtures for the basic lighting section, exit section 1, and exit section 2, respectively. and are the total luminous flux of the lamps in the basic lighting section, exit section 1 and exit section 2, x is the corresponding value of the lighting arrangement in the tunnel, ρ1 is the wall reflectivity, and are the luminous flux of the lamps in the basic lighting section, exit section 1 and exit section 2 illuminating the side wall, ρ2 is the arch reflectivity, and They are the luminous flux of the lamps in the basic lighting section, exit section 1 and exit section 2 illuminating the side wall more than 2m long, and M is the lamp maintenance factor.

2. The decision method for determining the optimal dimming mode and lighting parameters according to claim 1, characterized in that: In the nighttime dimming mode, the standard power calculation models for the lighting lamps in the entrance section 1, entrance section 2, transition section 1, and transition section 2 are: Among them, S1, S2, S3 and S4 are the lighting areas of the lamps in the entrance section 1, entrance section 2, transition section 1 and transition section 2 respectively, P 额定1 、P 额定2 、P 额定3 and P 额定4 are the rated power of the lighting lamps of entrance section 1, entrance section 2, transition section 1 and transition section 2 respectively, and The total luminous flux of the lamps in entrance section 1, entrance section 2, transition section 1 and transition section 2 respectively, and The luminous flux of the lamps of entrance section 1, entrance section 2, transition section 1 and transition section 2 irradiating the side wall, and The luminous flux of the lamps in entrance section 1, entrance section 2, transition section 1 and transition section 2 irradiating the side wall more than 2m away.

3. The method for determining the optimal dimming mode and lighting parameters according to claim 2, wherein: In the daytime dimming mode, the calculation models for the power required for lighting in entrance section 1, entrance section 2, transition section 1, and transition section 2 are calculated based on the current brightness value outside the tunnel: Among them, k is the reduction coefficient, L δ is the design standard value of the brightness outside the tunnel, and β is the ratio of the design standard value of the brightness outside the tunnel to the current brightness outside the tunnel.

4. The method for determining the optimal dimming mode and lighting parameters according to claim 2, wherein: For the entrance section 1, entrance section 2, transition section 1, transition section 2, basic lighting section, exit section 1 and exit section, the lighting area of ​​their respective lamps is equal to their respective road surface length multiplied by the road surface width.

5. The method for determining the optimal dimming mode and lighting parameters according to claim 2, wherein: For entrance section 1, entrance section 2, transition section 1, transition section 2, basic lighting section, exit section 1 and exit section, their respective luminous fluxes are calculated based on their respective lamp inclination angles, lamp installation heights and road surface widths.

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