CN111586944B - Highway tunnel intelligent illumination control system and method based on ETC portal system - Google Patents

Highway tunnel intelligent illumination control system and method based on ETC portal system Download PDF

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Publication number
CN111586944B
CN111586944B CN202010474379.5A CN202010474379A CN111586944B CN 111586944 B CN111586944 B CN 111586944B CN 202010474379 A CN202010474379 A CN 202010474379A CN 111586944 B CN111586944 B CN 111586944B
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tunnel
brightness
control module
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time
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CN111586944A (en
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杨秀军
盛刚
乔梅梅
王文菁
刘奕含
哈元元
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BEIJING JIAOKE HIGHWAY SURVEYING DESIGN AND RESEARCH INSTITUTE
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BEIJING JIAOKE HIGHWAY SURVEYING DESIGN AND RESEARCH INSTITUTE
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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10Controlling the light source
    • H05B47/105Controlling the light source in response to determined parameters
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10Controlling the light source
    • H05B47/165Controlling the light source following a pre-assigned programmed sequence; Logic control [LC]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

The invention provides a highway tunnel intelligent illumination control system and a highway tunnel intelligent illumination control method based on an ETC portal system, wherein the highway tunnel intelligent illumination control system comprises the ETC portal system, an OBU card, a sub-center, a server, a firewall, an intelligent illumination control module, a tunnel internal brightness detection system and an external brightness detector; the tunnel brightness detection system and the outside-tunnel brightness detector are connected with the intelligent illumination control module; the intelligent lighting control module is connected with the control end of each lamp; the intelligent illumination control module is also connected with the server through a firewall. The method collects the traffic information of the vehicles about to pass through the tunnel in real time, including traffic flow, vehicle speed and the like, accurately predicts the traffic flow about to enter the tunnel, and accurately judges the target illumination brightness required by different sections of the tunnel; then, intelligent control of the lamp is formed with the intelligent lighting control module, namely: the intelligent tunnel lighting system has the advantages that information such as traffic flow, speed, opening brightness and lighting lamps is coupled in a real sense, the purpose of lighting according to needs is achieved through intelligent judgment, and energy consumption of tunnel operation is reduced.

Description

Highway tunnel intelligent illumination control system and method based on ETC portal system
Technical Field
The invention belongs to the technical field of tunnel intelligent illumination control, and particularly relates to a highway tunnel intelligent illumination control system and method based on an ETC portal system.
Background
Due to the open-cut tunnel effect and the blind-cut tunnel effect, the driving safety of the tunnel is greatly influenced. The highway tunnel lighting system is characterized in that a lighting lamp is arranged in a tunnel, so that the smooth transition of the brightness change inside and outside the tunnel is realized, and the requirement on driving safety is met. The highway tunnel lighting system can consume a large amount of electric energy, the load of the lighting system reaches more than 10% of the total power consumption load of tunnel operation, and the operation cost is high. How to effectively reduce the power consumption of the tunnel lighting system under the condition that the brightness in the tunnel meets the driving safety requirement has important significance.
In the prior art, lamps of a lighting system in a tunnel are turned on and turned off mainly by means of manual intervention of operation management personnel according to a video or environment detection system, operation management workload is large, management is extensive, and requirements of people cannot be met.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an intelligent lighting control system and method for a highway tunnel based on an ETC portal system, which can effectively solve the problems.
The technical scheme adopted by the invention is as follows:
the invention provides a highway tunnel intelligent illumination control system based on an ETC portal system, which comprises: the system comprises an ETC portal system, an OBU card, a sub-center, a server, a firewall, an intelligent illumination control module, a tunnel internal brightness detection system and an external brightness detector;
the ETC portal system is positioned in front of the tunnel entrance, and the distance from the ETC portal system to the tunnel entrance is L 0 km; the ETC portal system is configured with an OBU card; the ETC portal system is connected with the sub-center through a network; the sub-center is connected with the server through network safety equipment;
arranging a plurality of lamps and a tunnel brightness detection system in a tunnel; installing an outside-tunnel brightness detector outside the tunnel portal; the output end of the tunnel brightness detection system and the output end of the out-of-tunnel brightness detector are both connected with the input end of the intelligent illumination control module; the output end of the intelligent illumination control module is connected with the control end of each lamp; the intelligent illumination control module is also connected with the server through a firewall.
The invention also provides a method of the intelligent lighting control system for the highway tunnel based on the ETC portal system, which comprises the following steps:
step 1, an ETC portal system collects vehicle passing information of passing vehicles in real time through an OBU card; wherein the vehicle passing information comprises a time point t when the vehicle passes through the ETC portal system 1 Vehicle running information and vehicle basic information;
every otherPredetermined time interval deltat 1 ETC gantry system will Δ T 1 Collecting all vehicle passing information collected in a time interval to form a vehicle passing data table, and then sending the vehicle passing data table to a branch center in real time;
step 2, the sub-center uploads the received vehicle passing data table to a server through network safety equipment in real time;
step 3, the intelligent illumination control module reads the vehicle passing data table from the server in real time through a firewall;
step 4, the intelligent illumination control module prestores basic data of the tunnel, analyzes the vehicle passing data table, and predicts target brightness values required to be reached by different illumination sections of the tunnel when the vehicle passes by combining the real-time brightness outside the tunnel detected by the brightness detector outside the tunnel;
step 5, the intelligent lighting control module prestores the arrangement position information of each lamp in the tunnel; the intelligent illumination control module acquires tunnel real-time brightness values of different positions of the tunnel opening and the tunnel in real time according to the tunnel internal and external brightness detection system;
the intelligent lighting control module compares the real-time brightness value of the tunnel with the target brightness value to be achieved in the different sections of the tunnel determined in the step (4), and determines the position of the lamp to be adjusted and the brightness of the lamp by taking the running time of the lamp as small as possible as a reference; the lamp can adjust the brightness through the stepless dimming system;
step 6, adjusting the lamp brightness of different lighting sections by the intelligent lighting control module when the lamp control time point is reached; then, the intelligent illumination control module obtains a tunnel real-time brightness value through a tunnel internal brightness detection system, judges whether the tunnel real-time brightness value reaches a target brightness value or not, and does not act if the tunnel real-time brightness value reaches the target brightness value; if the brightness value does not reach the target brightness value, further determining the position of the lamp needing to adjust the brightness according to the difference value between the real-time target brightness value and the target brightness value of the tunnel, and controlling the brightness of the lamp at the corresponding position, so that the position, the quantity and the brightness of the started lamp are adjusted according to the feedback data of the brightness detection system in the tunnel, and the requirement of the target brightness value is met;
and 7, then, returning to the step 1, and entering the cyclic detection and control process of the next period.
Preferably, step 4 specifically comprises:
step 4.1, the distance between the ETC portal system and the tunnel entrance is L 0 km;
The intelligent illumination control module analyzes vehicle passing information corresponding to each vehicle to obtain the time point t when the vehicle passes through the ETC portal system 1 And the vehicle speed V of the vehicle passing through the ETC portal system 1 Assuming that the vehicle is at a vehicle speed V from the ETC portal system to the tunnel entrance 1 Running at a constant speed, and thus obtaining a time point t when the vehicle reaches the tunnel entrance by the following formula 2
t 2 =t 1 +L 0 /V 1 (1)
Therefore, assuming that the vehicle passing data table has n vehicles, each vehicle corresponds to the time point t when the vehicle reaches the tunnel entrance 2 N time points t are obtained 2 Taking n time points t 2 Is recorded as: t is t 2min (ii) a Presetting safe redundant time delta t, let t 0 =t 2min -Δt,t 0 Is the point in time at which the lamp is controlled;
4.2, the intelligent lighting control module analyzes the vehicle passing data table to obtain a traffic predicted value X;
step 4.3, the intelligent lighting control module obtains an entrance section reduction coefficient K according to the traffic volume predicted value and the following formula:
Figure BDA0002515350750000031
in the formula:
a is a preset traffic volume upper limit value;
b is a preset lower limit value of the traffic volume;
x is a traffic volume predicted value;
n is the actual number of lanes;
4.4, sequentially dividing the tunnel into a first inlet section, a second inlet section, a first transition section, a second transition section, a third transition section, a basic section, a first outlet section and a second outlet section from front to back according to the driving direction; determining the length of each section by the following method;
1) determining the lengths of the first inlet section and the second inlet section according to:
Figure BDA0002515350750000032
in the formula:
D th1 is the length of the first inlet section;
D th2 is the length of the second inlet section;
D s determining the parking sight distance for illumination according to the length of the tunnel and the design speed;
h is the clearance height in the hole;
2) determining the lengths of the first transition, the second transition, and the third transition according to:
D tr1 =26+1.3875(V-40) (4)
D tr2 =44+1.1125(V-40) (5)
D tr3 =67+1.6625(V-40) (6)
in the formula:
D tr1 is the length of the first transition section;
D tr2 is the length of the second transition section;
D tr3 is the length of the third transition section;
v is the average value of the speed of each vehicle passing through the ETC portal system in the vehicle passing data table;
3) determining the length D of the basic segment according to design requirements in Length D of the first outlet section ex1 And length D of the second outlet section ex2
Step 4.5, determining a target brightness value required to be reached by each section in the following manner;
1) determining target brightness values for the first and second inlet segments according to:
L th1 =K·L 20 (S) (7)
L th2 =0.5·K·L 20 (S) (8)
in the formula:
L th1 is a target brightness value of the first inlet section;
L th2 the target brightness value of the second inlet section;
L 20 (S) is the brightness outside the tunnel;
2) determining target luminance values for the first, second and third transitions according to:
L tr1 =0.15·L th1 (9)
L tr2 =0.05·L th1 (10)
L tr3 =0.02·L th1 (11)
in the formula:
L tr1 the target brightness value of the first transition segment;
L tr2 the target brightness value of the second transition segment;
L tr3 the target brightness value of the third transition segment;
3) determining the target brightness value L of the basic segment according to the tunnel design requirement in
4) Determining target brightness values for the first outlet section and the second outlet section according to:
L ex1 =3·L in (12)
L ex2 =5·L in (13)
in the formula:
L ex1 is a target brightness value of the first outlet section;
L ex2 is the target luminance value of the second outlet segment.
The intelligent highway tunnel illumination control system and method based on the ETC portal system have the following advantages:
acquiring vehicle passing information about passing through the tunnel in real time, wherein the vehicle passing information comprises traffic flow, vehicle speed and the like, accurately predicting the traffic flow about entering the tunnel, and accurately judging target illumination brightness required by different sections of the tunnel; then, intelligent control is formed with the tunnel lighting intelligent control module, namely: the intelligent tunnel lighting system has the advantages that information such as traffic flow, speed, hole brightness and lighting lamps is coupled in a real sense, the purpose of lighting as required is achieved through intelligent judgment, and energy consumption in tunnel operation is reduced.
Drawings
Fig. 1 is a schematic flow diagram of an intelligent lighting control method for a highway tunnel based on an ETC portal system according to the present invention;
fig. 2 is a schematic diagram of a tunnel segment division method provided by the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides a highway tunnel intelligent illumination control system based on an ETC portal system, which solves the intelligent matching relation between a tunnel illumination system and the brightness outside a tunnel, traffic flow and vehicle speed, achieves the purpose of illumination according to needs and reduces the energy consumption of tunnel operation.
The invention provides a highway tunnel intelligent lighting control system based on an ETC portal system, which is characterized in that vehicle passing information such as traffic flow, speed and the like is acquired through the ETC portal system arranged in front of a tunnel entrance, the acquired vehicle passing information is transmitted to an intelligent lighting control module, the intelligent lighting control module accurately controls lamps in the tunnel according to the vehicle passing information in a future period of time and in combination with luminance data outside the tunnel detected by a luminance detector outside the tunnel, so that the purpose of lighting according to needs is achieved, and the energy consumption for tunnel operation is reduced on the premise of meeting the related lighting requirements of the operation environment in the tunnel.
The invention provides a highway tunnel intelligent illumination control system based on an ETC portal system, which comprises: the system comprises an ETC portal system, an OBU card, a sub-center, a server, a firewall, an intelligent illumination control module, a tunnel internal brightness detection system and an external brightness detector;
the ETC portal system is positioned in front of the tunnel entrance, and the distance from the ETC portal system to the tunnel entrance is L 0 km; the ETC portal system is configured with an OBU card; the ETC portal system is connected with the sub-center through a network; the sub-center is connected with the server through network safety equipment;
arranging a plurality of lamps and a tunnel brightness detection system in a tunnel; installing an outside-tunnel brightness detector outside the tunnel portal; the output end of the tunnel brightness detection system and the output end of the out-of-tunnel brightness detector are both connected with the input end of the intelligent illumination control module; the output end of the intelligent illumination control module is connected with the control end of each lamp; the intelligent illumination control module is also connected with the server through a firewall.
Therefore, the ETC portal system is used for collecting vehicle passing information including data such as vehicle types, vehicle speeds and passing time in real time and uploading the vehicle passing information to the server through the sub-center.
The intelligent illumination control module prestores basic parameters of the tunnel, including basic data such as tunnel length, pavement materials, illumination section setting modes, lamp setting positions and lamp power, and carries out real-time accurate prediction on target brightness in different areas of the tunnel through acquired vehicle traffic information, and can calculate time of the vehicle reaching the tunnel, and subtract the time from safety redundancy to obtain starting time of lamp control; and comparing the target brightness of different areas of the tunnel with the current actual brightness to obtain a control strategy of the lamps, wherein the control strategy comprises the control quantity and the control positions of the lamps, the control strategy meets the requirements of meeting the illumination comfort and safety in the tunnel after the vehicle reaches the tunnel, and the control strategy is adjusted through the feedback data of the brightness detector arranged in the tunnel.
The invention also provides a method for the intelligent lighting control system of the highway tunnel based on the ETC portal system, which is suitable for the situation that the ETC portal system is arranged in front of the tunnel at a certain distance, a complete tunnel internal brightness detection system and a complete tunnel external brightness detector are arranged, and intelligent coupling calculation is carried out on real-time traffic data, tunnel internal and external brightness data and lamp starting by developing a corresponding intelligent lighting control module, so that the aim of intelligent lighting of the tunnel is fulfilled.
According to the invention, the ETC portal system arranged on the highway is used for carrying out accurate data acquisition on vehicles entering the tunnel, and the intelligent control on the opening position, the quantity and the brightness of the tunnel lighting lamps is realized through the intelligent lighting control module by combining the basic parameters of the tunnel, the brightness outside the tunnel and the feedback data of the brightness detector in the tunnel, so that the purpose of lighting as required is achieved, and the energy conservation and emission reduction of the tunnel lighting system are realized.
Referring to fig. 1, the intelligent lighting control method for the highway tunnel based on the ETC portal system comprises the following steps:
step 1, an ETC portal system collects vehicle passing information of passing vehicles in real time through an OBU card; wherein, the vehicle traffic information comprises the time point t of the vehicle passing through the ETC portal system 1 Vehicle travel information and vehicle basic information;
in the concrete realization, ETC portal system passes through on-vehicle OBU card, for example license plate snapshot camera etc. accomplishes the collection of vehicle traffic information, as tunnel lighting control's key parameter.
In practical application, after the license plate snapshot camera finishes collecting and calculating the vehicle speed, the vehicle speed is used as the average vehicle speed before the vehicle reaches the tunnel, and other devices along the way can finish correcting the vehicle speed and serve as the controllability parameters of tunnel illumination.
The collected related information reaches the server through related measures of network security, and the intelligent lighting control module calls related data of the server through the firewall to complete the collection of real-time data.
At predetermined time intervals Δ T 1 ETC portal frameThe system will Δ T 1 Collecting all vehicle passing information collected in a time interval to form a vehicle passing data table, and then sending the vehicle passing data table to a branch center in real time;
step 2, the sub-center uploads the received vehicle passing data table to a server through network safety equipment in real time;
step 3, the intelligent illumination control module reads the vehicle passing data table from the server in real time through a firewall;
step 4, the intelligent illumination control module prestores basic data of the tunnel, analyzes the vehicle passing data table, and predicts target brightness values required to be reached by different illumination sections of the tunnel when the vehicle passes by combining the real-time brightness outside the tunnel detected by the brightness detector outside the tunnel;
specifically, the intelligent lighting control module obtains the quantity of lamps to be opened, the adjustment of the positions of the lamps and the brightness of the lamps and the lamps through relevant data (traffic flow, vehicle speed, luminance outside the tunnel and the like) collected in real time according to basic data such as pre-stored tunnel length, lighting sectional setting modes, lamp setting positions and lamp power, realizes accurate control of the lamps and the lamps, and meets the relevant requirements of meeting the comfort and safety of the tunnel operation environment in the tunnel after the vehicle reaches the tunnel.
The step 4 specifically comprises the following steps:
step 4.1, the distance between the ETC portal system and the tunnel entrance is L 0 km;
The intelligent illumination control module analyzes vehicle passing information corresponding to each vehicle to obtain a time point t when the vehicle passes through the ETC portal system 1 And the vehicle speed V of the vehicle passing through the ETC portal system 1 Assuming that the vehicle is driven at a vehicle speed V from the ETC gantry system to the tunnel entrance 1 Driving at a constant speed, and thus obtaining a time point t when the vehicle reaches the tunnel entrance by the following formula 2
t 2 =t 1 +L 0 /V 1 (1)
Therefore, it is assumed that the vehicle passing data table of this time has n vehicles in total, and each vehicle hasAll correspond to the time point t when the vehicle arrives at the tunnel entrance 2 N time points t are obtained 2 Taking n time points t 2 Is recorded as: t is t 2min (ii) a Presetting safe redundant time delta t, let t 0 =t 2min -Δt,t 0 Is the point in time at which the lamp is controlled;
therefore, the invention determines the timing of the lighting system adjustment according to the vehicle speed, the distance from the tunnel and the time required for safety redundancy.
4.2, the intelligent lighting control module analyzes the vehicle passing data table to obtain a traffic predicted value X;
step 4.3, the intelligent lighting control module obtains an entrance section reduction coefficient K according to the traffic volume predicted value and the following formula:
Figure BDA0002515350750000081
in the formula:
a is a preset traffic volume upper limit value;
b is a preset lower limit value of the traffic volume;
x is a traffic volume predicted value;
n is the actual number of lanes;
step 4.4, referring to fig. 2, dividing the tunnel into a first inlet section, a second inlet section, a first transition section, a second transition section, a third transition section, a basic section, a first outlet section and a second outlet section in sequence from front to back according to the driving direction; determining the length of each section by;
1) determining the lengths of the first and second inlet sections according to:
Figure BDA0002515350750000091
in the formula:
D th1 is the length of the first inlet section;
D th2 is the length of the second inlet section;
D s determining the parking sight distance for illumination according to the length of the tunnel and the design speed;
h is the clearance height in the hole;
2) determining the lengths of the first transition, the second transition, and the third transition according to:
D tr1 =26+1.3875(V-40) (4)
D tr2 =44+1.1125(V-40) (5)
D tr3 =67+1.6625(V-40) (6)
in the formula:
D tr1 is the length of the first transition section;
D tr2 is the length of the second transition section;
D tr3 is the length of the third transition section;
v is the average value of the speed of each vehicle passing through the ETC portal system in the current vehicle passing data sheet;
3) determining the length D of the basic segment according to design requirements in Length D of the first outlet section ex1 And length D of the second outlet section ex2
Step 4.5, determining the target brightness value required to be reached by each section in the following mode;
1) determining target brightness values for the first and second inlet segments according to:
L th1 =K·L 20 (S) (7)
L th2 =0.5·K·L 20 (S) (8)
in the formula:
L th1 is a target brightness value of the first inlet segment;
L th2 the target brightness value of the second inlet section;
L 20 (S) is the brightness outside the tunnel;
2) determining target luminance values for the first, second and third transitions according to:
L tr1 =0.15·L th1 (9)
L tr2 =0.05·L th1 (10)
L tr3 =0.02·L th1 (11)
in the formula:
L tr1 the target brightness value of the first transition segment;
L tr2 the target brightness value of the second transition section;
L tr3 the target brightness value of the third transition segment;
3) determining the target brightness value L of the basic segment according to the design requirement of the tunnel in
4) Determining target brightness values for the first outlet section and the second outlet section according to:
L ex1 =3·L in (12)
L ex2 =5·L in (13)
in the formula:
L ex1 is a target brightness value of the first outlet section;
L ex2 is the target brightness value of the second outlet section.
Step 5, the intelligent lighting control module prestores the arrangement position information of each lamp in the tunnel; the intelligent illumination control module acquires tunnel real-time brightness values of different positions of the tunnel opening and the tunnel in real time according to the tunnel internal and external brightness detection system;
the intelligent lighting control module compares the real-time brightness value of the tunnel with the target brightness value to be achieved in different sections of the tunnel determined in the step (4), and determines the position of the lamp and the brightness of the lamp to be adjusted by taking the running time of the lamp as the reference as the minimum as possible; the lamp can adjust the brightness through the stepless dimming system;
step 6, adjusting the lamp brightness of different lighting sections by the intelligent lighting control module when the lamp control time point is reached; then, the intelligent illumination control module obtains a tunnel real-time brightness value through a tunnel internal brightness detection system, judges whether the tunnel real-time brightness value reaches a target brightness value or not, and does not act if the tunnel real-time brightness value reaches the target brightness value; if the brightness of the lamps does not reach the target brightness value, further determining the positions of the lamps needing to be regulated in brightness according to the difference value between the real-time target brightness value and the target brightness value of the tunnel, and controlling the brightness of the lamps at the corresponding positions, so that the positions, the quantity and the brightness of the started lamps are regulated according to the feedback data of the brightness detection system in the tunnel, and the requirement of the target brightness value is met;
and 7, returning to the step 1, and entering a cyclic detection and control process of the next period.
In the process of carrying out intelligent lighting control on the highway tunnel, the intelligent lighting control module obtains vehicle traffic information such as traffic flow and vehicle speed passing through the tunnel in a short period of time in the future according to the ETC portal system at a specific distance in front of the tunnel entrance, so that accurate control of lamps in the tunnel is realized. In practical application, another ETC portal system at a position farther from the tunnel entrance can be adopted to correct the control strategy of the intelligent lighting control module. Specifically, the other ETC portal system at a position farther from the tunnel entrance is assumed to be an ETC portal system M; the ETC portal system M also collects first vehicle passing information of passing vehicles in real time and transmits the first vehicle passing information to the intelligent lighting control module. The intelligent illumination control module can sequentially close lamps in the tunnel according to the first vehicle passing information if vehicles entering the tunnel in the predicted time delta T (the specific time is determined according to the operation management requirement) are in a descending trend, so that the illumination of the basic section of the tunnel is ensured.
Therefore, the combined use of a plurality of gantry systems at different positions can be used as data prediction to judge whether the running state of the lamp continues.
According to the invention, vehicles entering the tunnel are subjected to accurate data acquisition by using the ETC portal system arranged on the highway, and the intelligent control of the opening positions and the quantity of lamps in the tunnel is realized through the intelligent illumination control module by combining the early-stage input tunnel basic parameters and the feedback data of the brightness data inside and outside the tunnel, so that the purpose of illumination according to needs is achieved, and the energy conservation and emission reduction of the tunnel illumination system are realized. The intelligent illumination control system and the design method are based on the brightness change outside the tunnel, the traffic flow and the vehicle speed in the tunnel are accurately predicted, and the lamp coupling control is realized, so that the intelligent illumination control system and the design method have important significance.
The invention provides an intelligent lighting control system for a highway tunnel based on an ETC portal system and a design method, which are suitable for the tunnel which is provided with the ETC portal system and a perfect brightness detection system at a certain distance in front of the tunnel. The intelligent tunnel lighting control system is characterized in that intelligent coupling calculation is carried out on real-time traffic data, brightness detection data and lamp starting through developing corresponding intelligent lighting control modules, so that the aim of intelligent tunnel lighting is fulfilled.
The invention has the following advantages:
(1) acquiring vehicle passing information about passing through a tunnel in real time, wherein the vehicle passing information comprises traffic flow, vehicle speed and the like, accurately predicting the traffic flow about entering the tunnel, and accurately judging target illumination brightness required by different sections of the tunnel; then, intelligent control is formed with the tunnel lighting intelligent control module, namely: the intelligent tunnel lighting system has the advantages that information such as traffic flow, speed, opening brightness and lighting lamps is really coupled, the purpose of lighting according to needs is achieved through intelligent judgment, and energy consumption of tunnel operation is reduced;
(2) the existing ETC portal system is utilized to collect the vehicle passing information, so that the vehicle passing information is collected more accurately and more comprehensively, and the application range of highway numbers is expanded;
(3) the management difficulty of tunnel operation managers and the workload of operation management are reduced, and the operation environment in the tunnel is improved.
(4) For the tunnel with less traffic flow or discontinuous traffic flow, the lamp is intelligently regulated and controlled based on the accurate prediction of the traffic flow in the tunnel, so that the illumination energy consumption is greatly reduced.
Therefore, the invention provides a new design idea and scheme for the energy-saving design of the road tunnel lighting system, and the invention has the advantages of lower construction cost, smaller later maintenance amount and higher system reliability.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and improvements can be made without departing from the principle of the present invention, and such modifications and improvements should also be considered within the scope of the present invention.

Claims (1)

1. The utility model provides a method of highway tunnel intelligence lighting control system based on ETC portal system which characterized in that, highway tunnel intelligence lighting control system based on ETC portal system which characterized in that includes: the system comprises an ETC portal system, an OBU card, a sub-center, a server, a firewall, an intelligent illumination control module, a tunnel internal brightness detection system and an external brightness detector;
the ETC portal system is positioned in front of the tunnel entrance, and the distance from the ETC portal system to the tunnel entrance is L 0 km; the ETC portal system is configured with an OBU card; the ETC portal system is connected with the sub-center through a network; the sub-center is connected with the server through network safety equipment;
arranging a plurality of lamps and a tunnel brightness detection system in a tunnel; installing an outside-tunnel brightness detector outside the tunnel portal; the output end of the tunnel brightness detection system and the output end of the out-of-tunnel brightness detector are both connected with the input end of the intelligent illumination control module; the output end of the intelligent illumination control module is connected with the control end of each lamp; the intelligent illumination control module is also connected with the server through a firewall;
the method of the highway tunnel intelligent illumination control system based on the ETC portal system comprises the following steps:
step 1, an ETC portal system collects vehicle passing information of passing vehicles in real time through an OBU card; wherein the vehicle passing information comprises a time point t when the vehicle passes through the ETC portal system 1 Vehicle travel information and vehicle basic information;
at predetermined time intervals Δ T 1 ETC gantry system will Δ T 1 Collecting all vehicle passing information collected in a time interval to form a vehicle passing data table, and then sending the vehicle passing data table to a branch center in real time;
step 2, the sub-center uploads the received vehicle passing data table to a server through network safety equipment in real time;
step 3, the intelligent illumination control module reads the vehicle passing data table from the server in real time through a firewall;
step 4, the intelligent illumination control module prestores basic data of the tunnel, analyzes the vehicle passing data table, and predicts target brightness values required to be reached by different illumination sections of the tunnel when the vehicle passes by combining the real-time brightness outside the tunnel detected by the brightness detector outside the tunnel;
step 5, the intelligent lighting control module prestores the arrangement position information of each lamp in the tunnel; the intelligent illumination control module acquires tunnel real-time brightness values of different positions of the opening and the tunnel in real time according to the tunnel internal and external brightness detection system;
the intelligent lighting control module compares the real-time brightness value of the tunnel with the target brightness value to be achieved in the different sections of the tunnel determined in the step (4), and then determines the position of the lamp to be adjusted and the brightness of the lamp by taking the running time of the lamp as a reference; the lamp can adjust the brightness through the stepless dimming system;
step 6, adjusting the lamp brightness of different lighting sections by the intelligent lighting control module when the lamp control time point is reached; then, the intelligent lighting control module obtains a tunnel real-time brightness value through a tunnel internal brightness detection system, judges whether the tunnel real-time brightness value reaches a target brightness value or not, and does not act if the tunnel real-time brightness value reaches the target brightness value; if the brightness of the lamps does not reach the target brightness value, further determining the positions of the lamps needing to be regulated in brightness according to the difference value between the real-time target brightness value and the target brightness value of the tunnel, and controlling the brightness of the lamps at the corresponding positions, so that the positions, the quantity and the brightness of the started lamps are regulated according to the feedback data of the brightness detection system in the tunnel, and the requirement of the target brightness value is met;
step 7, then, returning to the step 1, and entering the cyclic detection and control process of the next period;
the step 4 specifically comprises the following steps:
step 4.1, the distance between the ETC portal system and the tunnel entrance is L 0 km;
The intelligent illumination control module divides vehicle passing information corresponding to each vehicleAnalyzing to obtain the time point t of the vehicle passing through the ETC portal system 1 And the vehicle speed V of the vehicle passing through the ETC portal frame system 1 With vehicle speed V from ETC gantry system to tunnel entrance 1 Running at a constant speed, and thus obtaining a time point t when the vehicle reaches the tunnel entrance by the following formula 2
t 2 =t 1 +L 0 /V 1 (1)
Therefore, the vehicle passing data table has n vehicles, and each vehicle corresponds to the time point t when the vehicle reaches the tunnel entrance 2 N time points t are obtained 2 Taking n time points t 2 Is recorded as: t is t 2min (ii) a Presetting safe redundant time delta t, let t 0 =t 2min -Δt,t 0 Is the point in time at which the lamp is controlled;
4.2, the intelligent lighting control module analyzes the vehicle passing data table to obtain a traffic predicted value X;
step 4.3, the intelligent lighting control module obtains an entrance section reduction coefficient K according to the traffic predicted value and the following formula:
Figure FDA0003692766160000021
in the formula:
a is a preset traffic volume upper limit value;
b is a preset lower limit value of the traffic volume;
x is a traffic volume predicted value;
n is the actual number of lanes;
4.4, sequentially dividing the tunnel into a first inlet section, a second inlet section, a first transition section, a second transition section, a third transition section, a basic section, a first outlet section and a second outlet section from front to back according to the driving direction; determining the length of each section by;
1) determining the lengths of the first and second inlet sections according to:
Figure FDA0003692766160000031
in the formula:
D th1 is the length of the first inlet section;
D th2 is the length of the second inlet section;
D s determining the parking sight distance for illumination according to the length of the tunnel and the design speed;
h is the clearance height in the hole;
2) determining the lengths of the first transition, the second transition, and the third transition according to:
D tr1 =26+1.3875(V-40) (4)
D tr2 =44+1.1125(V-40) (5)
D tr3 =67+1.6625(V-40) (6)
in the formula:
D tr1 is the length of the first transition section;
D tr2 is the length of the second transition section;
D tr3 is the length of the third transition section;
v is the average value of the speed of each vehicle passing through the ETC portal system in the vehicle passing data table;
3) determining the length D of a basic segment in Length D of the first outlet section ex1 And length D of the second outlet section ex2
Step 4.5, determining the target brightness value required to be reached by each section in the following mode;
1) determining target brightness values for the first and second inlet segments according to:
L th1 =K·L 20 (S) (7)
L th2 =0.5·K·L 20 (S) (8)
in the formula:
L th1 is a target brightness value of the first inlet segment;
L th2 the target brightness value of the second inlet section;
L 20 (S) is the brightness outside the tunnel;
2) determining target luminance values for the first, second and third transitions according to:
L tr1 =0.15·L th1 (9)
L tr2 =0.05·L th1 (10)
L tr3 =0.02·L th1 (11)
in the formula:
L tr1 the target brightness value of the first transition section;
L tr2 the target brightness value of the second transition segment;
L tr3 the target brightness value of the third transition section;
3) determining a target luminance value L for a base segment in
4) Determining target brightness values for the first and second outlet segments according to:
L ex1 =3·L in (12)
L ex2 =5·L in (13)
in the formula:
L ex1 is a target brightness value of the first outlet section;
L ex2 is a target brightness value of the second outlet section;
in the process of carrying out intelligent lighting control on the highway tunnel, the intelligent lighting control module obtains traffic flow and vehicle speed vehicle passing information passing through the tunnel in a future period of time according to the ETC portal frame system at a specific distance in front of the tunnel entrance, so that accurate control on lamps in the tunnel is realized; correcting the control strategy of the intelligent lighting control module by adopting another ETC portal system at a position farther from the tunnel entrance; specifically, the other ETC portal system farther away from the tunnel entrance is an ETC portal system M; the ETC portal system M also collects first vehicle passing information of passing vehicles in real time and transmits the first vehicle passing information to the intelligent lighting control module; the intelligent illumination control module closes lamps in the tunnel in sequence according to the first vehicle traffic information if vehicles entering the tunnel in the time delta T are predicted to be in a descending trend, and illumination of the basic section of the tunnel is guaranteed;
and (3) combining and using a plurality of gantry systems at different positions to predict data and judge whether the running state of the lamp continues.
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