CN112312625A - Tunnel color-changing illumination system and method - Google Patents
Tunnel color-changing illumination system and method Download PDFInfo
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Abstract
The invention discloses a color-changing tunnel lighting system and a color-changing tunnel lighting method, wherein the color-changing tunnel lighting system comprises an environment brightness detection unit, an internal brightness adjusting unit, a dynamic brightness simulating unit and an environment color-changing adjusting unit; the environment brightness detection unit comprises an entrance brightness detection module and an exit brightness detection module and is used for detecting the external environment brightness at the entrance and the exit of the tunnel; the internal brightness adjusting unit adjusts the internal brightness of the tunnel entrance according to the external environment brightness; the dynamic brightness simulation unit is used for dynamically regulating the brightness of the middle section of the tunnel according to the difference of the external brightness at the entrance and the exit of the tunnel, so that the brightness of the middle section of the tunnel is naturally changed; and the environment color change adjusting unit adjusts the illumination color inside the tunnel according to the change of the external environment. According to the invention, the brightness of the entrance and the exit is changed by detecting the external brightness of the entrance and the exit of the tunnel, the brightness of the middle section of the tunnel is dynamically adjusted according to the different brightness of the entrance and the exit, and the internal illumination color is changed according to the environmental change, so that the visual field of a driver is not influenced when the driver enters and leaves the tunnel.
Description
Technical Field
The invention relates to a color-changing illumination system for a tunnel, and belongs to the field of illumination.
Background
The highway tunnel has the advantages of shortening mileage, saving time and improving traffic efficiency, and China amplitude officers have a plurality of mountainous terrain besides plains, so the tunnel is almost inevitable in highway construction. However, the tunnel is built up because of profound and light-tight, so that a driver can visually see a black hole when entering the tunnel, cannot observe the inside condition of the tunnel, and can visually see a white hole when going out of the tunnel, and also cannot observe the outside condition of the tunnel.
The existing tunnel lighting method is single, only conventional lighting is carried out at a tunnel entrance, the brightness is not adjusted, partial visual field loss can still be caused to a driver, meanwhile, illumination inside the tunnel cannot be adjusted independently and is coordinated with lighting at the tunnel entrance, the driver still can be made to feel uncomfortable visually when passing through, all environmental conditions cannot be captured, and meanwhile, the lighting color temperature of the tunnel cannot be changed naturally along with the environment, so that the burden is brought to the eyes of the driver, and the visual fatigue is caused.
Disclosure of Invention
The purpose of the invention is as follows: a color-changing illumination system and method for tunnels are provided to solve the above problems.
The technical scheme is as follows: a color-changing tunnel lighting system comprises an ambient brightness detection unit, an internal brightness adjustment unit, a dynamic brightness simulation unit and an ambient color-changing adjustment unit;
the environment brightness detection unit comprises an entrance brightness detection module and an exit brightness detection module and is used for detecting the external environment brightness at the entrance and the exit of the tunnel;
the internal brightness adjusting unit adjusts the internal brightness of the tunnel entrance according to the external environment brightness;
the dynamic brightness simulation unit is used for dynamically regulating the brightness of the middle section of the tunnel according to the difference of the external brightness at the entrance and the exit of the tunnel, so that the brightness of the middle section of the tunnel is naturally changed;
and the environment color change adjusting unit adjusts the illumination color inside the tunnel according to the change of the external environment.
According to one aspect of the present invention, the ambient brightness detection unit, the entrance brightness detection module, and the exit brightness detection module each include a brightness detection circuit, which includes a signal detection circuit and a band-pass filter circuit;
the signal detection circuit comprises a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, an operational amplifier U1A and an operational amplifier U1B;
one end of the resistor R1 is connected with an input signal, the other end of the resistor R1 is respectively connected with one end of the resistor R4, one end of the capacitor C2 and the 2 nd pin of the operational amplifier U1: A, the 3 rd pin of the operational amplifier U1: A is respectively connected with one end of the resistor R2, one end of the resistor R3 and one end of the capacitor C1, the other end of the resistor R2 is connected with a power supply voltage, the other end of the resistor R3 is connected with the other end of the capacitor C1, the 1 st pin of the operational amplifier U1: A is respectively connected with the other end of the capacitor C2, the other end of the resistor R4 and one end of the resistor R5, the other end of the resistor R5 is respectively connected with one end of the capacitor C3, one end of the resistor R6 and the 6 th pin of the operational amplifier U1: B, the other end of the capacitor C3 is connected with the ground, the other end of the resistor R6 is respectively connected with a power supply voltage, the other end of the capacitor C4 is grounded, and the 5 th pin of the operational amplifier U1: B and the 7 th pin of the operational amplifier U1: B are both connected with detection signals;
the band-pass filter circuit comprises a resistor R7, a resistor R8, a resistor R9, a resistor R10, a capacitor C5, a capacitor C6, a capacitor C7, a capacitor C8, an operational amplifier U1: C and an operational amplifier U1: D;
one end of the resistor R7 is respectively connected with the 5 th pin of the operational amplifier U1: B and the 7 th pin of the operational amplifier U1: B, the other end of the resistor R7 is connected with the other end of the capacitor C2 and the other end of the resistor R4, the other end of the capacitor C4 is respectively connected with one end of the capacitor C5, the other end of the capacitor C5 is respectively connected with one end of the capacitor C6, one end of the resistor R8 and the 9 th pin of the operational amplifier U1: C, the 10 th pin of the operational amplifier U1: C is connected with a power supply voltage, the 8 th pin of the operational amplifier U1: C is respectively connected with the other end of the resistor R8, the other end of the capacitor C6 and one end of the resistor R9, the other end of the resistor R9 is connected with one end of the capacitor C7, and the other end of the capacitor C7 is respectively connected with the 13 th pin 1: D of the operational amplifier U1: D, One end of the capacitor C8 is connected with one end of the resistor R10, the 12 th pin of the operational amplifier U1: D is connected with power supply voltage, and the 14 th pin of the operational amplifier U1: D, the other end of the resistor R10 and the other end of the capacitor C8 are connected with output signals.
According to one aspect of the invention, the brightness of the entrance and exit section is adjusted according to the external brightness at the entrance and exit of the tunnel, and the external brightness outside the entrance and exit is adjusted according to the external brightness at the entrance and exit of the tunnel
calculated and then according to the receiving degree of human eyes to the brightness
and calculating to obtain the receiving brightness of human eyes, and adjusting according to the brightness.
According to one aspect of the invention, when a driver drives a vehicle to a tunnel entrance, the illumination of the tunnel entrance section enables the light of the entrance to be matched with the external environment, so that the driver can receive the light of the tunnel to obtain all the environments, the tunnel entrance is changed from a black hole into a normal visual field, and the eyes of the driver are not stimulated by the illumination of the tunnel; when a driver reaches the tunnel exit, the illumination of the tunnel exit section enables the brightness of the exit to be matched with the external environment, so that the driver receives the tunnel light and feels that the light outside the tunnel is not dazzling, and the tunnel exit is changed into a normal view from a white hole.
According to an aspect of the present invention, as the driver approaches the entrance/exit of the tunnel, the brightness of the external environment is changed in the eyes of the driver, and thus the brightness adjustment of the entrance/exit section of the tunnel is changed according to the distance between the driver and the entrance/exit of the tunnel
Gamma is the change rate of the external brightness, alpha is a parameter, v is the tunnel limiting speed, x is the displacement,
and obtaining the change rate of the external brightness, so that the brightness of the entrance and exit sections of the tunnel is dynamically adjusted along with the change of the external brightness in the eyes of a driver, the brightness of the entrance section is reduced along with the increase of the distance from the entrance, and the brightness of the exit section is increased along with the reduction of the distance from the exit.
According to one aspect of the invention, the tunnel middle section is divided into a plurality of sections of units for illumination, each illumination unit has an illumination function, the brightness can be freely adjusted, the brightness change is processed in a sectional manner, different illumination units adopt different brightness, and the tunnel middle section presents a process that the brightness is gradually reduced and then gradually increased
S is the change rate of the tunnel brightness, alpha is a parameter, v is the tunnel limit speed, and N is the tunnelThe total number of brightness units, i is the serial number of the tunnel brightness unit,
for the brightness of the unit of luminance of the tunnel,
for the distance of the brightness unit of the tunnel,
for the brightness of the entrance section of the tunnel,
for the brightness of the exit section of the tunnel,
the change rate of the tunnel brightness is fixed, the brightness change of each brightness unit of the tunnel is obtained, a driver who accords with the limited vehicle speed of the tunnel can adapt to the natural brightness change in the tunnel, the brightness in the middle section is weakened, the visual fatigue of the driver can be reduced, and meanwhile, energy is saved.
According to one aspect of the invention, the high color temperature is selected in the tunnel when the external brightness is high, and is matched with the external environment, so that a driver can obtain good visual experience, the dark feeling in the tunnel can not be generated when entering the tunnel, and the dazzling feeling of the external light intensity can not be generated when leaving the tunnel; the low color temperature is selected when the external brightness is low, the dazzling feeling in the tunnel can not be generated when the tunnel is entered, the insufficient feeling of the external light intensity can not be generated when the tunnel is left, the protection effect on the vision of a driver is achieved by using the change of different color temperatures, the change of the color temperature in the tunnel is changed along with the change of the brightness, and the optimal lighting effect is achieved.
A color-changing illumination method for a tunnel calculates the optimal color temperature of the tunnel according to a lightning attachment algorithm, and comprises the following specific steps:
step 1, regarding color temperature as a test point of lightning attachment, regarding all test points as an initial population, and calculating electric fields of the test points to judge the fitness of the test points;
step 2, regarding a specific test point and other test points as potential next jump points, selecting a random point j in the population for the test point i due to randomness of lightning, if the electric field of the point j is larger than the average value, the lightning jumps to the point, otherwise, the lightning moves to another point, namely, the lightning moves to the other point
i is a test point and the test point is,
for the next test point the electric field,
the test point electric field, r is a random number,
is the average electric field, j is the random point,
is a random point electric field;
step 3, if the electric field of the new test point is higher, the branch is kept, otherwise, the branch is eliminated, the process is executed for all the test points, and all the rest points are considered to move downwards at the stage;
and 4, regarding the upward ground guiding motion as the iteration times, wherein the upward ground guiding motion is based on the charges of the downward test points
k is the test point of the upward movement,
the electric field for the next upward moving test point,
the electric field of the test point moving downwards, t the number of iterations,
in order to be the maximum number of iterations,
the electric field at the test point closest to the ground,
is an electric field of a cloud test point,
obtaining the next track of the upward movement of the test point, wherein the worst selection is carried out when the upward movement test point reaches the height of the cloud end, and the closer the upward movement test point is to the ground, the better the selection is;
step 5, when the test points moving upwards and moving downwards meet to determine the optimal selection, stopping the lightning attaching process, completing the maximum iteration, and completing the algorithm;
and 6, calculating the average value of the population in each iteration, and replacing the average value when the selected fitness obtained by the algorithm is worse than the average value.
Has the advantages that: the invention can adjust and match the ambient brightness to adapt to the vision of the driver through the illumination brightness of the tunnel inlet section and the tunnel outlet section, and dynamically change the brightness of the tunnel middle section, thereby saving electric power, weakening the visual fatigue of the driver, simultaneously connecting different illumination brightness at two ends of the tunnel, changing the color temperature to adapt to the brightness change and achieving the best illumination effect.
Drawings
Fig. 1 is a system block diagram of the tunnel color changing illumination system of the present invention.
Fig. 2 is a schematic diagram of a luminance detection circuit of the present invention.
Detailed Description
When a driver enters the tunnel, the driver cannot see the internal condition of the tunnel clearly because the brightness of the tunnel is insufficient and is a black hole in the eyes of the driver, and traffic accidents are easy to occur.
In this embodiment, as shown in fig. 1, a tunnel color-changing illumination system includes an ambient brightness detection unit, an internal brightness adjustment unit, a dynamic brightness simulation unit, and an ambient color-changing adjustment unit;
the environment brightness detection unit comprises an entrance brightness detection module and an exit brightness detection module and is used for detecting the external environment brightness at the entrance and the exit of the tunnel;
the internal brightness adjusting unit adjusts the internal brightness of the tunnel entrance according to the external environment brightness;
the dynamic brightness simulation unit is used for dynamically regulating the brightness of the middle section of the tunnel according to the difference of the external brightness at the entrance and the exit of the tunnel, so that the brightness of the middle section of the tunnel is naturally changed;
and the environment color change adjusting unit adjusts the illumination color inside the tunnel according to the change of the external environment.
As shown in fig. 2, in a further embodiment, the ambient brightness detection unit, the entrance brightness detection module, and the exit brightness detection module each include a brightness detection circuit, which includes a signal detection circuit and a band-pass filter circuit;
the signal detection circuit comprises a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, an operational amplifier U1A and an operational amplifier U1B;
one end of the resistor R1 is connected with an input signal, the other end of the resistor R1 is respectively connected with one end of the resistor R4, one end of the capacitor C2 and the 2 nd pin of the operational amplifier U1: A, the 3 rd pin of the operational amplifier U1: A is respectively connected with one end of the resistor R2, one end of the resistor R3 and one end of the capacitor C1, the other end of the resistor R2 is connected with a power supply voltage, the other end of the resistor R3 is connected with the other end of the capacitor C1, the 1 st pin of the operational amplifier U1: A is respectively connected with the other end of the capacitor C2, the other end of the resistor R4 and one end of the resistor R5, the other end of the resistor R5 is respectively connected with one end of the capacitor C3, one end of the resistor R6 and the 6 th pin of the operational amplifier U1: B, the other end of the capacitor C3 is connected with the ground, the other end of the resistor R6 is respectively connected with a power supply voltage, the other end of the capacitor C4 is grounded, and the 5 th pin of the operational amplifier U1: B and the 7 th pin of the operational amplifier U1: B are both connected with detection signals;
the band-pass filter circuit comprises a resistor R7, a resistor R8, a resistor R9, a resistor R10, a capacitor C5, a capacitor C6, a capacitor C7, a capacitor C8, an operational amplifier U1: C and an operational amplifier U1: D;
one end of the resistor R7 is respectively connected with the 5 th pin of the operational amplifier U1: B and the 7 th pin of the operational amplifier U1: B, the other end of the resistor R7 is connected with the other end of the capacitor C2 and the other end of the resistor R4, the other end of the capacitor C4 is respectively connected with one end of the capacitor C5, the other end of the capacitor C5 is respectively connected with one end of the capacitor C6, one end of the resistor R8 and the 9 th pin of the operational amplifier U1: C, the 10 th pin of the operational amplifier U1: C is connected with a power supply voltage, the 8 th pin of the operational amplifier U1: C is respectively connected with the other end of the resistor R8, the other end of the capacitor C6 and one end of the resistor R9, the other end of the resistor R9 is connected with one end of the capacitor C7, and the other end of the capacitor C7 is respectively connected with the 13 th pin 1: D of the operational amplifier U1: D, One end of the capacitor C8 is connected with one end of the resistor R10, the 12 th pin of the operational amplifier U1: D is connected with power supply voltage, and the 14 th pin of the operational amplifier U1: D, the other end of the resistor R10 and the other end of the capacitor C8 are connected with output signals.
In the embodiment, because the brightness data collected from the outside needs to be timely and accurately reflected, the circuit response speed has high requirement, and the multistage amplifier is designed to amplify signals and improve the circuit response speed. Meanwhile, due to the complex environment of the tunnel portal, the signals can generate large noise interference, the transmission of the signals is obstructed, and the problem in a circuit pursuing high precision is large. Because the daily frequency of use of the luminance detection module in tunnel is high, so have high requirement to the durability of module, complicated circuit structure appears the damage on the contrary easily, so the reliable practicality of the circuit of simple design also is convenient for carry out repair work after the circuit is impaired, is better selection from cost and manpower.
In a further embodiment, if the external brightness is difficult to adapt to the insufficient brightness of the tunnel entrance by simple illumination, the original effect of eliminating visual influence cannot be achieved, or the dazzling reverse effect is generated, so that the adaptability adjustment through brightness detection is very necessary. First, considering the brightness composition of the outside world, consists of
the ambient brightness is determined from the brightness distribution.
In a further embodiment, the calculation of the external brightness is actually a drawback, because there is a problem of receptivity of human eyes to the external brightness, there is a self-adjustment of the external brightness according to the angle and other problems when entering the human eyes, there is an error between the adjusted brightness and the external brightness, in order to solve this problem, the calculation and adjustment of human eye adaptability to the obtained external brightness is performed, and the calculation and adjustment are performed by using the error
and calculating to obtain the adjusted external brightness in human eyes, and adjusting the tunnel illumination according to the brightness to accord with the receiving rule of human eyes.
In a further embodiment, when entering the tunnel, the driver is farther and farther away from the external light source, the influence of the external light source on human eyes is less, and the requirement on the brightness of the tunnel changes; on the contrary, when the tunnel leaves, the light source is closer and closer, the influence of the external light source is increased, and the brightness requirement on the tunnel is also changed, so that
Gamma is the change rate of the external brightness, alpha is a parameter, v is the tunnel limiting speed, x is the displacement,
the change rate of the external brightness is calculated, the brightness change of the tunnel at the entrance section and the exit section is further adjusted, the illumination brightness at the entrance section is gradually reduced, the illumination brightness at the exit section is gradually improved, the overall trend meets the requirements of human eyes, and meanwhile, the energy can be saved.
In a further embodiment, after the driver enters the middle section of the tunnel, the influence of the light source at the tunnel entrance disappears, and the tunnel illumination only needs to enable the driver to sufficiently observe the road condition, so that the illumination at the middle section of the tunnel can be properly reduced. The tunnel middle section is divided into a plurality of sections of units for illumination, each illumination unit has an illumination function, the brightness can be freely adjusted, the brightness change is processed in sections, different illumination units adopt different brightness, and the tunnel middle section presents the process that the brightness is gradually reduced and then gradually increased
S is the change rate of the tunnel brightness, alpha is a parameter, v is the tunnel limiting speed, N is the total number of the tunnel brightness units, i is the serial number of the tunnel brightness units,
for the brightness of the unit of luminance of the tunnel,
for the distance of the brightness unit of the tunnel,
for the brightness of the entrance section of the tunnel,
for the brightness of the exit section of the tunnel,
the change rate of the tunnel brightness is fixed, the brightness change of each brightness unit of the tunnel is obtained, a driver who accords with the limited vehicle speed of the tunnel can adapt to the natural brightness change in the tunnel, the brightness in the middle section is weakened, the visual fatigue of the driver can be reduced, and meanwhile, energy is saved.
In a further embodiment, when the external brightness is high, the high color temperature is selected from the interior of the tunnel to be matched with the external environment, so that a driver can obtain good visual experience, the dark feeling in the tunnel can not be generated when entering the tunnel, and the dazzling feeling of the external light intensity can not be generated when leaving the tunnel; the low color temperature is selected when the external brightness is low, the dazzling feeling in the tunnel can not be generated when the tunnel is entered, the insufficient feeling of the external light intensity can not be generated when the tunnel is left, the protection effect on the vision of a driver is achieved by using the change of different color temperatures, the change of the color temperature in the tunnel is changed along with the change of the brightness, and the optimal lighting effect is achieved.
A color-changing illumination method for a tunnel calculates the optimal color temperature of the tunnel according to a lightning attachment algorithm, and comprises the following specific steps:
step 1, regarding color temperature as a test point of lightning attachment, regarding all test points as an initial population, and calculating electric fields of the test points to judge the fitness of the test points;
step 2, regarding a specific test point and other test points as potential next jump points, selecting a random point j in the population for the test point i due to randomness of lightning, if the electric field of the point j is larger than the average value, the lightning jumps to the point, otherwise, the lightning moves to another point, namely, the lightning moves to the other point
i is a test point and the test point is,
for the next test point the electric field,
the test point electric field, r is a random number,
is the average electric field, j is the random point,
is a random point electric field;
step 3, if the electric field of the new test point is higher, the branch is kept, otherwise, the branch is eliminated, the process is executed for all the test points, and all the rest points are considered to move downwards at the stage;
and 4, regarding the upward ground guiding motion as the iteration times, wherein the upward ground guiding motion is based on the charges of the downward test points
k is the test point of the upward movement,
the electric field for the next upward moving test point,
the electric field of the test point moving downwards, t the number of iterations,
in order to be the maximum number of iterations,
the electric field at the test point closest to the ground,
is an electric field of a cloud test point,
obtaining the next track of the upward movement of the test point, wherein the worst selection is carried out when the upward movement test point reaches the height of the cloud end, and the closer the upward movement test point is to the ground, the better the selection is;
step 5, when the test points moving upwards and moving downwards meet to determine the optimal selection, stopping the lightning attaching process, completing the maximum iteration, and completing the algorithm;
and 6, calculating the average value of the population in each iteration, and replacing the average value when the selected fitness obtained by the algorithm is worse than the average value.
In summary, the present invention has the following advantages:
1. the illumination brightness of the tunnel entrance section and the tunnel exit section is adjusted and matched with the ambient brightness to adapt to the vision of a driver;
2. the brightness of the middle section of the tunnel is dynamically changed, so that the different illumination brightness at the two ends of the tunnel can be connected while the electric power is saved and the visual fatigue of a driver is weakened;
3. the color temperature is changed to adapt to the brightness change so as to achieve the optimal illumination effect.
It is to be noted that the respective technical features described in the above embodiments are combined in any appropriate manner without contradiction. The invention is not described in detail in order to avoid unnecessary repetition.
Claims (7)
1. A color-changing tunnel lighting system is characterized by comprising an ambient brightness detection unit, an internal brightness adjusting unit, a dynamic brightness simulating unit and an ambient color-changing adjusting unit;
the environment brightness detection unit comprises an entrance brightness detection module and an exit brightness detection module and is used for detecting the external environment brightness at the entrance and the exit of the tunnel;
the internal brightness adjusting unit adjusts the internal brightness of the tunnel entrance according to the external environment brightness;
the dynamic brightness simulation unit is used for dynamically regulating the brightness of the middle section of the tunnel according to the difference of the external brightness at the entrance and the exit of the tunnel, so that the brightness of the middle section of the tunnel is naturally changed;
and the environment color change adjusting unit adjusts the illumination color inside the tunnel according to the change of the external environment.
2. The system of claim 1, wherein the ambient brightness detection unit, the entrance brightness detection module, and the exit brightness detection module each comprise a brightness detection circuit, which comprises a signal detection circuit and a band-pass filter circuit;
the signal detection circuit comprises a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, an operational amplifier U1A and an operational amplifier U1B;
one end of the resistor R1 is connected with an input signal, the other end of the resistor R1 is respectively connected with one end of the resistor R4, one end of the capacitor C2 and the 2 nd pin of the operational amplifier U1: A, the 3 rd pin of the operational amplifier U1: A is respectively connected with one end of the resistor R2, one end of the resistor R3 and one end of the capacitor C1, the other end of the resistor R2 is connected with a power supply voltage, the other end of the resistor R3 is connected with the other end of the capacitor C1, the 1 st pin of the operational amplifier U1: A is respectively connected with the other end of the capacitor C2, the other end of the resistor R4 and one end of the resistor R5, the other end of the resistor R5 is respectively connected with one end of the capacitor C3, one end of the resistor R6 and the 6 th pin of the operational amplifier U1: B, the other end of the capacitor C3 is connected with the ground, the other end of the resistor R6 is respectively connected with a power supply voltage, the other end of the capacitor C4 is grounded, and the 5 th pin of the operational amplifier U1: B and the 7 th pin of the operational amplifier U1: B are both connected with detection signals;
the band-pass filter circuit comprises a resistor R7, a resistor R8, a resistor R9, a resistor R10, a capacitor C5, a capacitor C6, a capacitor C7, a capacitor C8, an operational amplifier U1: C and an operational amplifier U1: D;
one end of the resistor R7 is respectively connected with the 5 th pin of the operational amplifier U1: B and the 7 th pin of the operational amplifier U1: B, the other end of the resistor R7 is connected with the other end of the capacitor C2 and the other end of the resistor R4, the other end of the capacitor C4 is respectively connected with one end of the capacitor C5, the other end of the capacitor C5 is respectively connected with one end of the capacitor C6, one end of the resistor R8 and the 9 th pin of the operational amplifier U1: C, the 10 th pin of the operational amplifier U1: C is connected with a power supply voltage, the 8 th pin of the operational amplifier U1: C is respectively connected with the other end of the resistor R8, the other end of the capacitor C6 and one end of the resistor R9, the other end of the resistor R9 is connected with one end of the capacitor C7, and the other end of the capacitor C7 is respectively connected with the 13 th pin 1: D of the operational amplifier U1: D, One end of the capacitor C8 is connected with one end of the resistor R10, the 12 th pin of the operational amplifier U1: D is connected with power supply voltage, and the 14 th pin of the operational amplifier U1: D, the other end of the resistor R10 and the other end of the capacitor C8 are connected with output signals.
3. The color-changing tunnel lighting system according to claim 1, wherein the internal brightness adjusting unit adjusts the brightness of the entrance/exit section according to the external brightness at the entrance/exit of the tunnel, and the external brightness outside the entrance/exit is adjusted by the external brightness adjusting unit
calculated and then according to the receiving degree of human eyes to the brightness
and adjusting the brightness of the tunnel entrance section according to the entrance outside brightness.
4. A color-changing tunnel lighting system according to claim 1, wherein the brightness adjusted by said internal brightness adjusting unit varies with the distance between the driver and the exit of the tunnel
Gamma is the change rate of the external brightness, alpha is a parameter, v is the tunnel limiting speed, x is the displacement,
and obtaining the change rate of the external brightness, so that the brightness of the entrance and exit sections of the tunnel is dynamically adjusted along with the change of the external brightness in the eyes of a driver, the brightness of the entrance section is reduced along with the increase of the distance from the entrance, and the brightness of the exit section is increased along with the reduction of the distance from the exit.
5. The system of claim 1, wherein the dynamic brightness simulation unit divides the middle section of the tunnel into multiple sections of unit illumination, and the brightness change is processed in sections to show the process of gradually decreasing and then gradually increasing the brightness in the middle section of the tunnel
S is the change rate of the tunnel brightness, alpha is a parameter, v is the tunnel limiting speed, N is the total number of the tunnel brightness units, i is the serial number of the tunnel brightness units,
for the brightness of the unit of luminance of the tunnel,
for the distance of the brightness unit of the tunnel,
for the brightness of the entrance section of the tunnel,
for the brightness of the exit section of the tunnel,
the change rate of the tunnel brightness is fixed, the brightness change of each brightness unit of the tunnel is obtained, and the tunnel limited vehicle speed is met.
6. A tunnel color-changing illumination system according to claim 1, wherein the environment color-changing adjustment unit selects a high color temperature when the external brightness is high, selects a low color temperature when the external brightness is low, and uses the change of different color temperatures to protect the vision of the driver, and the change of color temperature inside the tunnel follows the change of brightness.
7. A color-changing illumination method for a tunnel is characterized in that the optimal color temperature of the tunnel is calculated according to a lightning attachment algorithm, and the method comprises the following specific steps:
step 1, regarding color temperature as a test point of lightning attachment, regarding all test points as an initial population, and calculating electric fields of the test points to judge the fitness of the test points;
step 2, regarding a specific test point and other test points as potential next jump points, selecting a random point j in the population for the test point i due to randomness of lightning, if the electric field of the point j is larger than the average value, the lightning jumps to the point, otherwise, the lightning moves to another point, namely, the lightning moves to the other point
i is a test point and the test point is,
for the next test point the electric field,
the test point electric field, r is a random number,
is the average electric field, j is the random point,
is a random point electric field;
step 3, if the electric field of the new test point is higher, the branch is kept, otherwise, the branch is eliminated, the process is executed for all the test points, and all the rest points are considered to move downwards at the stage;
and 4, regarding the upward ground guiding motion as the iteration times, wherein the upward ground guiding motion is based on the charges of the downward test points
k is the test point of the upward movement,
the electric field for the next upward moving test point,
the electric field of the test point moving downwards, t the number of iterations,
in order to be the maximum number of iterations,
the electric field at the test point closest to the ground,
is an electric field of a cloud test point,
obtaining the next track of the upward movement of the test point, wherein the worst selection is carried out when the upward movement test point reaches the height of the cloud end, and the closer the upward movement test point is to the ground, the better the selection is;
step 5, when the test points moving upwards and moving downwards meet to determine the optimal selection, stopping the lightning attaching process, completing the maximum iteration, and completing the algorithm;
and 6, calculating the average value of the population in each iteration, and replacing the average value when the selected fitness obtained by the algorithm is worse than the average value.
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