CN114155710B - Underground road confluence road section guiding control system and control method - Google Patents
Underground road confluence road section guiding control system and control method Download PDFInfo
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- CN114155710B CN114155710B CN202111432423.7A CN202111432423A CN114155710B CN 114155710 B CN114155710 B CN 114155710B CN 202111432423 A CN202111432423 A CN 202111432423A CN 114155710 B CN114155710 B CN 114155710B
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- G—PHYSICS
- G08—SIGNALLING
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- G08G1/00—Traffic control systems for road vehicles
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- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/052—Detecting movement of traffic to be counted or controlled with provision for determining speed or overspeed
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- G—PHYSICS
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- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/16—Anti-collision systems
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Abstract
The invention discloses an underground road confluence road section guiding control system and a control method, wherein the underground road confluence road section guiding control system comprises a vehicle detection module, the vehicle detection module is electrically connected with a control module, and the control module is electrically connected with a variable identification plate; the invention confirms the control level of the current vehicle through the average speed of two adjacent vehicles at the innermost side of the front main line of the confluence road section of the underground road and the time interval between the two adjacent vehicles, then adopts different control guiding methods according to the obtained control level, prompts the driver of the main line to take reasonable driving actions, comprehensively considers that the cognitive information of the driver on the confluence road section of the underground road is not perfect, and provides a guiding control system and a control method of the confluence road section of the underground road, which are used for guiding and controlling the driving actions of the driver, improving the driving consciousness of the driver and reducing the driving speed of the driver, thereby ensuring the safe and effective operation of the road.
Description
Technical Field
The invention relates to the technical field of intelligent transportation, in particular to a guiding control system and a guiding control method for a road-to-road combined flow path section of an underground road.
Background
Due to the advantage of land conservation, underground road engineering is gradually adopted by all large cities, and a large number of underground split-flow road sections are formed with the gradual network formation of urban underground roads. As well as the above-ground split-flow road sections, the below-ground split-flow road sections are used as key nodes of the underground road network, and the operation efficiency of the whole road network can be affected. Compared with the ground confluence road section, the underground road confluence road section can not accurately acquire ramp confluence information by a driver on a main line due to factors such as tunnel shielding and the like, so that accidents such as collision rear-end collision and the like are induced, and the normal operation of traffic flow is seriously influenced. But if corresponding guiding measures are taken for the driver, the occurrence of such events will be reduced;
however, the existing facilities have relatively few guiding facilities for the confluence section of the underground road, so that the main line vehicles cannot be effectively guided and controlled in time, accidents can be caused, and the overall passing efficiency of the section is affected. Therefore, a new solving measure is needed for the confluence road section of the underground road, and the guiding control of the main line vehicle can be performed, so that the occurrence of accidents is reduced, the whole traffic efficiency of the road section is ensured, and therefore, the guiding control system and the guiding control method for the confluence road section of the underground road are provided.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides an underground road confluence road section guiding control system and a control method.
In order to solve the technical problems, the invention adopts the following technical measures:
an underground road junction guidance control system, the underground road junction guidance control system comprising:
the vehicle detection module is electrically connected with the control module, and the control module is electrically connected with the variable identification plate;
the guiding module is connected with the control module and is connected with the cloud platform and the server through the infinite communication module;
the instruction issuing module is connected with the server, and the server sends a guiding instruction to the vehicle terminal;
the early warning module is connected with the server, the early warning module is connected with the vehicle terminal, and the vehicle terminal is provided with a voice broadcasting module;
the information recording module is used for recording event information in real time;
and the GPS positioning module is arranged in the vehicle terminal and is connected with the server.
Preferably, the server is connected with an emergency processing module, and the emergency processing module is connected with a 110 dialing module and a 120 dialing module.
Preferably, the information recording module is connected with a data storage module, the data storage module is connected with a data encryption module, and the data encryption module is connected with a decryption module.
Preferably, the vehicle detection module includes a data communication unit, a filtering unit, a power supply module, a sensor unit, and a fault detection circuit.
A control method for guiding a confluent road section of an underground road comprises the following steps:
s1: calculating the arrangement safety interval L of the vehicle detection module and the control module, calculating the arrangement safety interval L1 of the variable identification plate, detecting the current headway and average vehicle speed of the vehicle by the vehicle detection module, grading to obtain time interval grade information and vehicle speed grade information, and transmitting the time interval grade information and the vehicle speed grade information to the control module;
s2: the control module calculates and obtains a control grade according to the acquired time interval grade information and the acquired vehicle speed grade information, and takes corresponding guiding control measures according to the control grade; when the control level is two levels, the variable identification plate does not work; when the control level is one level, the variable identification plate is started to work.
Preferably, the calculating the safety interval L in S1 is:
L1＝L-L0
wherein L is the safety interval of the vehicle detection module and the control module, L1 is the safety interval of the variable identification plate, L0 is the front distance of the variable identification plate, S is the safety distance of the two vehicles not colliding, v is the highest limit speed of the underground road, and t is the response time of the driver.
Preferably, the headway grade information detected by the vehicle detection module in S1 is: if the headway is less than X1, the headway grade information is first-order; if the headway is more than or equal to X1, the headway grade information is of a second grade.
Preferably, the vehicle speed level information detected by the vehicle detection module in S1 is: if the average speed of the front and rear vehicles is less than Z1, the vehicle speed grade information is first-grade; if the average vehicle speed of the front vehicle and the rear vehicle is more than or equal to Z1, the vehicle speed grade information is of a second grade.
Preferably, the headway grade information obtained by the control module in S1 is X, the vehicle speed grade information obtained by the control module in S1 is Y, and the control module in S2 calculates and obtains a control grade according to the obtained headway grade information and the vehicle speed grade information, as shown in the following description
K＝a*X+b*Y
Wherein: k represents a control level;
a. b represents the weight coefficient of each factor;
x represents the level of headway grade information;
y represents vehicle speed grade information;
when the grading index is 5 and is more than or equal to K, the control grade is first grade;
when the grading index K is less than 5, the control grade is two-grade.
Among the above modules, the key module is a control module. The main function of the control module in the system is to calculate corresponding control grades according to the time interval, the speed and other information acquired by the detection module, and to take corresponding guiding control measures according to the control grades.
In the system, a vehicle detection module detects the headway and average vehicle speed of a currently running vehicle and transmits the obtained headway grade information and vehicle speed grade information to a control module; the control module calculates a control level according to the obtained information and transmits the control level information to the variable identification plate; the variable identification board takes corresponding guiding control measures according to the control level. Because the information is transferred in the system in the flow of the vehicle detection module, the control module and the variable identification plate, the three modules are considered to be connected in the form of 'the vehicle detection module is electrically connected with the control module, and the control module is electrically connected with the variable identification plate'.
Compared with the prior art, the invention has the following beneficial effects:
the invention confirms the control grade of the current vehicle through the average vehicle speed of two adjacent vehicles at the innermost side of the front main line of the confluence road section of the underground road and the time interval between the two adjacent vehicles, then adopts different control guiding methods according to the obtained control grade, prompts the driver of the main line to take reasonable driving actions, comprehensively considers that the cognitive information of the driver on the confluence road section of the underground road is not perfect, and provides a guiding control system and a control method of the confluence road section of the underground road, which are used for guiding and controlling the driving actions of the driver, improving the driving consciousness of the driver and reducing the driving speed of the driver, thereby ensuring the safe and effective operation of the road.
Compared with the existing measures for guaranteeing the traffic safety of the underground roads, the method has the advantages that the information cognition of the driver on the confluent road sections of the underground roads is taken as an entry point, the vehicle information before the confluent road sections of the underground roads is collected and the control grades are divided, and different control guiding methods are adopted according to different control grades, so that the information cognition of the driver when the driver runs on the underground roads is enriched, the driving behavior is guided and controlled, and the traffic safety of the underground roads is guaranteed.
Drawings
Fig. 1 is a structural diagram of an underground road merging section guidance control system and control method.
Detailed Description
In order that the manner in which the above recited features, objects and advantages of the present invention are obtained will become readily apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. Based on the examples in the embodiments, those skilled in the art can obtain other examples without making any inventive effort, which fall within the scope of the invention. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents, etc. used in the following examples are commercially available unless otherwise specified.
Example 1:
as shown in fig. 1, an underground road merging section guidance control system and a control method thereof, including an underground road merging section guidance control system including: the vehicle detection module is electrically connected with the control module, and the control module is electrically connected with the variable identification plate;
the vehicle detection module adopts a coil detector, and the technical parameters of the coil detector are as follows:
working power supply: AC220V, AC110V, AC/DC24V, AC/DC12V selectable, 2.5W power
Frequency range: 20 KHz-170 KHz
Sensitivity: three-stage adjustable
Reaction time: 100 ms of
And (3) environmental compensation: automatic drift compensation
Coil inductance: 80-300 uH (including connecting wire) and 50-500 uH (including connecting wire) at maximum
Length of connecting wire: and the maximum length is 5 meters, at least 20 times of twisting is carried out per meter, and the total resistance is less than 10 ohms.
Storage temperature: -40 o C to +85o C (C)
Operating temperature: -20 o C to +65o C (C)
Relative humidity: max 95%
External dimensions: 85X 74X 36mm
The variable identification plate adopts an LED (light-emitting diode) variable identification plate, and the technical parameters are as follows:
1. external dimensions: sheet metal material: 400 x 400mm, 600 x 600mm PC plastic: phi 200mm, phi 300mm, phi 400mm
2. Operating voltage: 220 VAC.+ -. 15%,50 Hz.+ -. 2Hz
3. Brightness: the red light is more than or equal to 6000mcd and the green light is more than or equal to 10000mcd
4. Wavelength: red: 630+ -5 green: 505+ -5
5. Average life of LED: not less than 10 ten thousand hours
6. MTBF:20000 hours
7. Visual distance is more than or equal to 800 meters
8. Working temperature range: -30 ℃ -60 DEG C
The control module adopts SIMATIC S7-200 SMART, and the technical parameters are as follows:
1. CPU CR40, compact CPU, AC/DC/relay
2. On-board I/O:24 DC digital inputs and 16 2A relay digital outputs
3. And (3) a power supply: at 47-63Hz, 85-264V AC
4. Program memory/data memory: 20KB
Working principle: the vehicle detection module is connected with the control module in a wired mode; the control module is connected with the variable marking plate in a wired mode, a vehicle detection module, the variable marking plate and a control module are arranged in front of the innermost lane of the confluence section of the underground road at a safe interval L, the vehicle detection module is used for collecting the time interval between the adjacent two vehicles and the real-time speed of the vehicles, if the time interval between the adjacent two vehicles is larger than a time threshold value and the average speed is lower than a speed threshold value, the variable marking plate does not work, otherwise, corresponding control measures are adopted according to different states of the variable marking plate.
A control method for guiding a confluent road section of an underground road comprises the following steps:
step S1: calculating the arrangement safety interval L of the vehicle detection module and the control module, calculating the arrangement safety interval L1 of the variable identification plate, detecting the current headway and average vehicle speed of the vehicle by the vehicle detection module, grading to obtain time interval grade information and vehicle speed grade information, and transmitting the time interval grade information and the vehicle speed grade information to the control module;
step S2: the control module calculates and obtains a control level according to the acquired time interval level information and the acquired vehicle speed level information, and adopts corresponding guiding control measures according to the control level; when the control level is two levels, the variable identification plate does not work; when the control level is one level, the variable identification plate is started to work.
The safety interval L is calculated in step S1 as:
L1＝L-L0
wherein L is the arrangement safety interval of the vehicle detection module and the control module, L1 is the arrangement safety interval of the variable identification plate, L0 is the front distance of the variable identification plate, S is the safety distance of the two vehicles not colliding, v is the highest limit speed of the underground road, and t is the reaction time of a driver;
by referring to the literature and conducting the field investigation, taking 40m, taking 20m for L0, taking 60km/h for the limited vehicle speed v, taking 1.2 seconds for t, and calculating to obtain L=60 m and L1=40 m.
In step S1, the headway grade information detected by the vehicle detection module is:
if the headway is less than X1, the headway grade information is first-grade, and X1 = 3s;
if the headway is more than or equal to X1, the headway grade information is of a second grade, and X1 = 3s.
The vehicle speed grade information detected by the vehicle detection module in step S1 is:
if the average speed of the front and rear vehicles is less than Z1, the vehicle speed grade information is first-grade, and Z1=50 km/h;
if the average speed of the front and rear vehicles is more than or equal to Z1, the vehicle speed grade information is of a second grade, and Z1=50 km/h.
The headway grade information obtained by the control module in the step S1 is X, the vehicle speed grade information obtained by the control module in the step S1 is Y, and the control module in the step S2 calculates and obtains a control grade according to the obtained headway grade information and the vehicle speed grade information, and the headway grade information is specifically shown as follows
K＝a*X+b*Y
Wherein: k represents a control level;
a. b represents the weight coefficient of each factor;
x represents the level of headway grade information;
y represents vehicle speed grade information;
when the grading index is 5 and is more than or equal to K, the control grade is first grade;
when the grading index K is less than 5, the control grade is a second grade;
in step S2, when the control level is one level, the variable sign board displays control information, and when the vehicle hazard level is two levels, no operation is performed.
In the embodiment of the invention, the tunnel of the Yangtze river of the Wuhan is taken as an example, and the invention is described with reference to fig. 1.
An underground road junction guidance control system, the underground road junction guidance control system comprising:
the vehicle detection module is electrically connected with the control module, and the control module is electrically connected with the variable identification plate;
the guiding module is connected with the control module and is connected with the cloud platform and the server through the infinite communication module;
the instruction issuing module is connected with the server, and the server sends a guiding instruction to the vehicle terminal;
the early warning module is connected with the server, the early warning module is connected with the vehicle terminal, and the vehicle terminal is provided with a voice broadcasting module;
the information recording module is used for recording event information in real time;
and the GPS positioning module is arranged in the vehicle terminal and is connected with the server.
The server is connected with an emergency processing module, and the emergency processing module is connected with a 110 dialing module and a 120 dialing module.
The information recording module is connected with the data storage module, the data storage module is connected with the data encryption module, and the data encryption module is connected with the decryption module.
The vehicle detection module comprises a data communication unit, a filtering unit, a power supply module, a sensor unit and a fault detection circuit.
The invention confirms the control grade of the current vehicle through the average vehicle speed of two adjacent vehicles at the innermost side of the front main line of the confluence road section of the underground road and the time interval between the two adjacent vehicles, then adopts different control guiding methods according to the obtained control grade, prompts the driver of the main line to take reasonable driving actions, comprehensively considers that the cognitive information of the driver on the confluence road section of the underground road is not perfect, and provides a guiding control system and a control method of the confluence road section of the underground road, which are used for guiding and controlling the driving actions of the driver, improving the driving consciousness of the driver and reducing the driving speed of the driver, thereby ensuring the safe and effective operation of the road.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.
Claims (8)
1. An underground road confluence road section guidance control system is characterized in that: the underground road merging section guidance control system includes:
the vehicle detection module is electrically connected with the control module, and the control module is electrically connected with the variable identification plate;
the guiding module is connected with the control module and is connected with the cloud platform and the server through the infinite communication module;
the instruction issuing module is connected with the server, and the server sends a guiding instruction to the vehicle terminal;
the early warning module is connected with the server, the early warning module is connected with the vehicle terminal, and the vehicle terminal is provided with a voice broadcasting module;
the information recording module is used for recording event information in real time;
the GPS positioning module is arranged in the vehicle terminal and is connected with the server;
the control system uses a guiding control method for the confluence road section of the underground road, and is characterized by comprising the following steps:
s1: calculating the arrangement safety interval L of the vehicle detection module and the control module, calculating the arrangement safety interval L1 of the variable identification plate, detecting the current headway and average vehicle speed of the vehicle by the vehicle detection module, grading to obtain time interval grade information and vehicle speed grade information, and transmitting the time interval grade information and the vehicle speed grade information to the control module;
s2: the control module calculates and obtains a control level according to the acquired time interval level information and the acquired vehicle speed level information, and takes corresponding guiding control measures according to the control level; when the control level is the second level, the variable identification plate does not work; when the control level is one level, the variable identification plate is started to work.
2. The underground road merging section guidance control system according to claim 1, characterized in that: the server is connected with an emergency processing module, and the emergency processing module is connected with a 110 dialing module and a 120 dialing module.
3. The underground road merging section guidance control system according to claim 1, characterized in that: the information recording module is connected with a data storage module, the data storage module is connected with a data encryption module, and the data encryption module is connected with a decryption module.
4. The underground road merging section guidance control system according to claim 1, characterized in that: the vehicle detection module includes a data communication unit, a filtering unit, a power module, a sensor unit, and a fault detection circuit.
5. The underground road merging section guidance control system according to claim 1, characterized in that: the step (S1) calculates a safety interval L as:
L1＝L-L0
wherein: l is the safety interval of the vehicle detection module and the control module, L1 is the safety interval of the variable identification plate, L0 is the front distance of the variable identification plate, S is the safety distance of the two vehicles not colliding, v is the highest limit speed of the underground road, and t is the response time of the driver.
6. The underground road merging section guidance control system according to claim 1, characterized in that: the headway grade information detected by the vehicle detection module in the step (S1) is as follows: when the headway is less than X1, the headway grade information is first-grade; when the headway is more than or equal to X1, the headway grade information is of a second grade.
7. The underground road merging section guidance control system according to claim 1, characterized in that: the vehicle speed level information detected by the vehicle detection module in the step (S1) is: when the average speed of the front and rear vehicles is less than Z1, the vehicle speed grade information is first-grade; when the average speed of the front and rear vehicles is more than or equal to Z1, the vehicle speed grade information is of a second grade.
8. The underground road merging section guidance control system according to claim 1, characterized in that: the headway grade information obtained by the control module in the step (S1) is X, the vehicle speed grade information obtained by the control module in the step (S1) is Y, and the control module in the step (S2) calculates and obtains a control grade according to the obtained headway grade information and the vehicle speed grade information, wherein the control grade is as follows:
K＝a*X+b*Y
wherein: k represents a control level;
a. b represents the weight coefficient of each factor;
x represents the level of headway grade information;
y represents vehicle speed grade information;
when the grading index is 5 and is more than or equal to K, the control grade is first grade;
when the grading index K is less than 5, the control grade is two-grade.
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