CN111586944A - 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 PDFInfo
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- CN111586944A CN111586944A CN202010474379.5A CN202010474379A CN111586944A CN 111586944 A CN111586944 A CN 111586944A CN 202010474379 A CN202010474379 A CN 202010474379A CN 111586944 A CN111586944 A CN 111586944A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/105—Controlling the light source in response to determined parameters
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/165—Controlling the light source following a pre-assigned programmed sequence; Logic control [LC]
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- Y—GENERAL 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
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control 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 out-of-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 lamp control 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
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 L0km; 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 system1Vehicle travel information and vehicle basic information;
at predetermined time intervals Δ T1ETC gantry system will Δ T1Collecting 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 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 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.
Preferably, step 4 specifically comprises:
step 4.1, the distance between the ETC portal system and the tunnel entrance is L0km；
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 system1And the vehicle speed V of the vehicle passing through the ETC portal system1Assuming that the vehicle is at a vehicle speed V from the ETC portal system to the tunnel entrance1Running at a constant speed, and thus obtaining a time point t when the vehicle reaches the tunnel entrance by the following formula2：
t2＝t1+L0/V1(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 entrance2N time points t are obtained2Taking n time points t2Is recorded as: t is t2min(ii) a Presetting safe redundant time delta t, let t0＝t2min-Δt，t0Is 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:
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:
in the formula:
Dth1is the length of the first inlet section;
Dth2is the length of the second inlet section;
Dsdetermining 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:
Dtr1＝26+1.3875(V-40) (4)
Dtr2＝44+1.1125(V-40) (5)
Dtr3＝67+1.6625(V-40) (6)
in the formula:
Dtr1is the length of the first transition section;
Dtr2is the length of the second transition section;
Dtr3is 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 requirementsinLength D of the first outlet sectionex1And length D of the second outlet sectionex2；
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:
Lth1＝K·L20(S) (7)
Lth2＝0.5·K·L20(S) (8)
in the formula:
Lth1is a target brightness value of the first inlet section;
Lth2the target brightness value of the second inlet section;
L20(S) is the brightness outside the tunnel;
2) determining target luminance values for the first, second and third transitions according to:
Ltr1＝0.15·Lth1(9)
Ltr2＝0.05·Lth1(10)
Ltr3＝0.02·Lth1(11)
in the formula:
Ltr1the target brightness value of the first transition segment;
Ltr2the target brightness value of the second transition segment;
Ltr3the 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 tunnelin；
4) Determining target brightness values for the first outlet section and the second outlet section according to:
Lex1＝3·Lin(12)
Lex2＝5·Lin(13)
in the formula:
Lex1is a target brightness value of the first outlet section;
Lex2is the target brightness value of the second outlet section.
The intelligent lighting control system and method for the highway tunnel based on the ETC portal system provided by the invention 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; and 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 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.
Drawings
Fig. 1 is a schematic flow chart of an intelligent lighting control method for a highway tunnel based on an ETC portal system provided by the invention;
fig. 2 is a schematic diagram of a tunnel segment division method provided in 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 intelligent lighting control module is used for collecting vehicle traffic information such as traffic flow, vehicle speed and the like through the ETC portal system arranged in front of a tunnel entrance, transmitting the collected vehicle traffic information to the intelligent lighting control module, accurately predicting the required target brightness of the entrance section, the transition section, the basic section and the exit section in the tunnel in real time according to the vehicle traffic information of a period of time in the future and combining with the luminance data outside the tunnel detected by the luminance detector outside the tunnel, and accurately controlling lamps in the tunnel by combining with the layout scheme of the lighting lamps in the tunnel to achieve the purpose of lighting according to needs, so that the energy consumption of tunnel operation is reduced on the premise of meeting the relevant 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 L0km; 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 acquiring vehicle passing information in real time, wherein the vehicle passing information comprises data such as vehicle types, vehicle speeds and passing time, and uploading the vehicle passing information to the server through the sub-center.
The intelligent illumination control module prestores basic tunnel parameters including basic data such as tunnel length, pavement materials, illumination section setting modes, lamp setting positions and lamp power, accurately predicts target brightness of different areas of the tunnel in real time through collected vehicle traffic information, calculates time of the vehicle reaching the tunnel, and subtracts 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 ETC portal system arranged at a certain distance in front of the tunnel, the complete brightness detection system in the tunnel and the brightness detector outside the tunnel, and the intelligent coupling calculation is carried out on the real-time traffic data, the brightness data inside and outside the tunnel and the lamp opening by developing the corresponding intelligent lighting control module, thereby realizing the purpose of intelligent lighting of the tunnel.
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 passing information comprises a time point t when the vehicle passes through the ETC portal system1Vehicle travel information and vehicle basic information;
in the concrete realization, the ETC portal system finishes the collection of vehicle traffic information through a vehicle-mounted OBU card, such as a license plate snapshot camera, and the like, and the collected vehicle traffic information is used as a key parameter for tunnel illumination control.
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 safety, and the intelligent lighting control module calls related data of the server through a firewall to complete real-time data collection.
At predetermined time intervals Δ T1ETC gantry system will Δ T1Collecting 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 L0km；
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 system1And the vehicle speed V of the vehicle passing through the ETC portal system1Assuming that the vehicle is at a vehicle speed V from the ETC portal system to the tunnel entrance1Running at a constant speed, and thus obtaining a time point t when the vehicle reaches the tunnel entrance by the following formula2：
t2＝t1+L0/V1(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 entrance2N time points t are obtained2Taking n time points t2Is recorded as: t is t2min(ii) a Presetting safe redundant time delta t, let t0＝t2min-Δt，t0Is 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:
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:
in the formula:
Dth1is the length of the first inlet section;
Dth2is the length of the second inlet section;
Dsdetermining 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:
Dtr1＝26+1.3875(V-40) (4)
Dtr2＝44+1.1125(V-40) (5)
Dtr3＝67+1.6625(V-40) (6)
in the formula:
Dtr1is the length of the first transition section;
Dtr2is the length of the second transition section;
Dtr3is 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 requirementsinLength D of the first outlet sectionex1And length D of the second outlet sectionex2；
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:
Lth1＝K·L20(S)(7)
Lth2＝0.5·K·L20(S) (8)
in the formula:
Lth1is a target brightness value of the first inlet section;
Lth2the target brightness value of the second inlet section;
L20(S) is the brightness outside the tunnel;
2) determining target luminance values for the first, second and third transitions according to:
Ltr1＝0.15·Lth1(9)
Ltr2＝0.05·Lth1(10)
Ltr3＝0.02·Lth1(11)
in the formula:
Ltr1the target brightness value of the first transition segment;
Ltr2the target brightness value of the second transition segment;
Ltr3the 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 tunnelin；
4) Determining target brightness values for the first outlet section and the second outlet section according to:
Lex1＝3·Lin(12)
Lex2＝5·Lin(13)
in the formula:
Lex1is a target brightness value of the first outlet section;
Lex2is 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 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 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, another ETC portal system farther away 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 system can be combined and used by a plurality of gantry systems at different positions to be used as data prediction to judge whether the running state of the lamp is continued or not.
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 coupling calculation is carried out on the real-time traffic data, the brightness detection data and the lamp opening by developing the corresponding intelligent lighting control module, so that the aim of intelligent lighting of the tunnel is fulfilled.
The invention has the following advantages:
(1) 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; and 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 (3)
1. The utility model provides a 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 L0km; 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.
2. The method for the ETC portal system-based intelligent lighting control system for the road tunnel is characterized by comprising the following steps of:
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 system1Vehicle travel information andbasic information of the vehicle;
at predetermined time intervals Δ T1ETC gantry system will Δ T1Collecting 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 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 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.
3. The method for the intelligent lighting control system for the highway tunnel based on the ETC portal system according to claim 2, wherein the step 4 is specifically as follows:
step 4.1, the distance between the ETC portal system and the tunnel entrance is L0km；
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 system1And the vehicle speed V of the vehicle passing through the ETC portal system1Assuming that the vehicle is at a vehicle speed V from the ETC portal system to the tunnel entrance1Running at a constant speed, and thus obtaining a time point t when the vehicle reaches the tunnel entrance by the following formula2：
t2＝t1+L0/V1(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 entrance2N time points t are obtained2Taking n time points t2Is recorded as: t is t2min(ii) a Presetting safe redundant time delta t, let t0＝t2min-Δt，t0Is 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:
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:
in the formula:
Dth1is the length of the first inlet section;
Dth2is the length of the second inlet section;
Dsdetermining 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:
Dtr1＝26+1.3875(V-40) (4)
Dtr2＝44+1.1125(V-40) (5)
Dtr3＝67+1.6625(V-40) (6)
in the formula:
Dtr1is the length of the first transition section;
Dtr2is the length of the second transition section;
Dtr3is 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 requirementsinLength D of the first outlet sectionex1And length D of the second outlet sectionex2；
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:
Lth1＝K·L20(S) (7)
Lth2＝0.5·K·L20(S) (8)
in the formula:
Lth1is a target brightness value of the first inlet section;
Lth2the target brightness value of the second inlet section;
L20(S) is the brightness outside the tunnel;
2) determining target luminance values for the first, second and third transitions according to:
Ltr1＝0.15·Lth1(9)
Ltr2＝0.05·Lth1(10)
Ltr3＝0.02·Lth1(11)
in the formula:
Ltr1the target brightness value of the first transition segment;
Ltr2the target brightness value of the second transition segment;
Ltr3the 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 tunnelin；
4) Determining target brightness values for the first outlet section and the second outlet section according to:
Lex1＝3·Lin(12)
Lex2＝5·Lin(13)
in the formula:
Lex1is a target brightness value of the first outlet section;
Lex2is the target brightness value of the second outlet section.
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