CN109183535A - A kind of city expressway plane ramp control system in changeable direction - Google Patents
A kind of city expressway plane ramp control system in changeable direction Download PDFInfo
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- CN109183535A CN109183535A CN201811168084.4A CN201811168084A CN109183535A CN 109183535 A CN109183535 A CN 109183535A CN 201811168084 A CN201811168084 A CN 201811168084A CN 109183535 A CN109183535 A CN 109183535A
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- comparator
- escalator
- ramp
- ring road
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C1/00—Design or layout of roads, e.g. for noise abatement, for gas absorption
- E01C1/002—Design or lay-out of roads, e.g. street systems, cross-sections ; Design for noise abatement, e.g. sunken road
-
- 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
- G08G1/042—Detecting movement of traffic to be counted or controlled using inductive or magnetic detectors
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Traffic Control Systems (AREA)
Abstract
The present invention relates to a kind of city expressway plane ramp control systems in changeable direction, it is mainly used for solving the problems, such as current ring road open amount limitation and the fixed caused urban ramp location vehicle queue of ring road form, so that plane ring road allows current direction of traffic variable in different periods.The present invention includes detector, display and the special ring road being set between adjacent upstream exit ramp and downstream entrance ring road.Specific working method are as follows: if detector detects main stem congestion, special ring road is switched to exit ramp；If detector detects the unimpeded and auxiliary road congestion of main stem, special ring road is switched to Entrance ramp at this time.It by the detection of real-time traffic states, determines and changes ring road form, to effectively solve the problems, such as that current ring road open amount is limited and the fixed caused city expressway plane ramp location vehicle pass-through inefficiency of ring road form.
Description
Technical field
The present invention relates to a kind of city expressway plane ramp control systems in changeable direction.
Background technique
Plane ring road is to solve urban traffic flow to enter auxiliary road from main stem or set from the important traffic that auxiliary road enters main stem
Apply, plane ring road open amount number and the selection of entrance form the efficient evacuation of main stem and auxiliary road wagon flow is played to pass
Important role.
The many city expressway in current China all have that the opening setting of roadside ring road is intensive, this can frequently do
The traffic flow on road is disturbed, the function of undertaking trip over long distances so as to cause through street reduces, and Vehicle Speed is impacted.?
In terms of the selection of entrance form, due to unreasonable and trip requirements the unstability in traffic design stage, can usually it go out
Existing Entrance ramp utilization rate is low and main road vehicle queue is too long at exit ramp or exit ramp utilization rate is low and Entrance ramp
The too long situation of the road Chu Fu vehicle queue.This greatly affected the utilization rate of city expressway and the fortune of urban road traffic flow
Transfer efficient.For the fixed caused vehicle queue problem of the limitation of fast road ramp open amount and ring road form, rationally design flat
The physical form of face ring road, making it be the traffic flow service of different flow directions under different transport need situations is best solution party
Method.
Summary of the invention
The object of the invention is in view of the above-mentioned problems, establishing a kind of city expressway plane ramp metering rate in changeable direction
System, so that plane ring road allows current direction of traffic variable in different periods.
The technical scheme is that a kind of city expressway plane ramp control system in changeable direction, such as Fig. 1 institute
Show, including be set to main stem outermost lane and apart from exit ramp length be L1 the first wagon detector 1, be set to auxiliary road
And apart from Entrance ramp length be L2 the second wagon detector 2, special ring road 3, the first display 4 and second display 5；Institute
Special ring road 3 is stated between adjacent exit ramp and Entrance ramp, the setting of the first display 4 in main stem outermost lane and
At exit ramp L3, second display 5 is arranged in auxiliary road and at special ring road 3L4；
First wagon detector 1 includes the first vehicle sensor and the first ramp controller；The first vehicle inspection
Output pulse signal can be continued by surveying after device 1 detects vehicle；First ramp controller compares including the first counter, first
Device and first memory, the output end of the first vehicle sensor of enabled termination of the first counter, first counter are being held
Generate cumulative numerical value under continuous pulse signal, an input terminal of the output termination first comparator of the first counter, first
Another input of comparator terminates first memory, is installed with the first control threshold in first memory, i.e., when first counts
After the output valve of device is greater than the first control threshold fixed in first memory, first comparator exports high level signal；
Second wagon detector 2 includes the second vehicle sensor and the second ramp controller；The second vehicle inspection
Output pulse signal can be continued by surveying after device 2 detects vehicle；Second ramp controller include the second counter, the second comparator and
Second memory, the output end of the second vehicle sensor of enabled termination of the second counter, second counter is lasting
Cumulative numerical value is generated under pulse signal, two input terminals of output the second comparator of termination of the second counter, second compares
Another two inputs of device terminate second memory, are installed with the second control threshold in second memory, i.e., when the second counter
After output valve is greater than the second control threshold fixed in second memory, the second comparator exports high level signal；
As shown in Figure 1, the special ring road 3 is by along exit ramp to Entrance ramp direction, successively staggered first
Escalator 6, the second escalator 7 and third escalator 8 are constituted, the first escalator 6, the second automatic lifting
Machine 7 and third escalator 8 are regular triangular prism, and the first escalator 6, the second escalator 7 and third are automatic
Top view after elevator 8 is staggered is trapezoidal；First escalator 6, the second escalator 7 and third are automatic
Elevator 8 can raised maximum height it is identical and minimum altitude is flushed with ground；
The output end of the enabled termination first comparator and the second comparator of the control of first escalator 6, and it is fixed
Control model is, the output signal of first comparator is the output signal of low level and the second comparator when being high level, first
Escalator 6 is dropped to be flushed with ground, when the output signal of first comparator is high level, on the first escalator 6
Rise to maximum height；Otherwise the first escalator 6 rises to maximum height；
The output end of the enabled termination first comparator and the second comparator of the control of second escalator 7, and it is fixed
Control model is, the output signal of first comparator is the output signal of low level and the second comparator when being high level, second
Escalator 7 is dropped to be flushed with ground, when the output signal of first comparator is high level, under the second escalator 7
It is down to and is flushed with ground；Otherwise the second escalator 7 rises to maximum height；
The output end of the enabled termination first comparator and the second comparator of the control of third escalator 8, and it is fixed
Control model is, the output signal of first comparator is the output signal of low level and the second comparator when being high level, third
Escalator 8 rises to maximum height, and when the output signal of first comparator is high level, third escalator 8 declines
Extremely flushed with ground；Otherwise third escalator 8 rises to maximum height；
The output end of the enabled termination first comparator of first display 4, when first comparator exports high level signal
The state for indicating special ring road 3 is exit ramp；
The output end of enabled the termination first comparator and the second comparator of second display 5 is exported in first comparator
Indicate that the state of special ring road 3 is Entrance ramp when low level signal and the second comparator output high level signal.
The operation principle of the present invention is that:
One special ring road, the ring road are set between city expressway adjacent upstream exit ramp and downstream entrance ring road
The physical form of plane ring road can be changed by way of different component automatic liftings；In exit ramp upstream and special circle
Road upstream is provided with display and is used to that driver is guided to select ring road；On main stem exit ramp upstream and auxiliary road Entrance ramp
Trip is provided with wagon detector.The residence time of real-time monitoring vehicle, if the time that vehicle is detained exceeds preset time threshold
Value, then be judged as congestion in road.
If main stem exit ramp upstream is judged as congestion in road, the vehicle fleet size for illustrating to leave main stem into auxiliary road is more,
For the passage for guaranteeing major trunk roads vehicle, special ring road should be exit ramp at this time, while be located at the display of exit ramp upstream
Show " unlatching of front exit ring road " printed words, guidance driver leaves main stem into auxiliary road；If main stem exit ramp upstream is not sentenced
Break as congestion (unimpeded) and auxiliary road Entrance ramp upstream be judged as congestion in road, illustrate at this time main stem transportation condition it is good and be intended to from
The vehicle that the road Kai Fu enters main stem is more, and special ring road is Entrance ramp at this time, while being located at the display of special ring road upstream
Show " unlatching of this place Entrance ramp " printed words, guidance driver enters main stem.
In the present invention, using vehicle sensor, counter and comparator combination by the way of judge road whether congestion, side
Method is simple, it is easy to accomplish, and it is low in cost；Special ring road is completed in such a way that escalator cooperates three trigone column assemblies
For the switching of exit ramp or Entrance ramp, the unlike signal that escalator can be exported according to wagon detector is completed to rise
Drop, control mode are also simply easily achieved.It can be evident that the method for the present invention is feasible and can work as with effective solution
The problem of urban ramp location vehicle pass-through inefficiency caused by preceding ring road open amount is limited and ring road form is fixed.
Detailed description of the invention
Fig. 1 is detector of the invention, display and ring road layout position illustration；
Fig. 2 is special ring road entrance form decision flow chart of the invention；
Fig. 3 is the schematic diagram that special ring road of the invention is Entrance ramp (left side) and exit ramp (right side).
Specific embodiment
Technical solution of the present invention is described in detail in summary of the invention, details are not described herein.
You need to add is that above-mentioned technical solution only selected two adjacent entrance ring roads to be demonstrated in order to
Easier understand the solution of the present invention, indeed according to concrete condition, those skilled in that art can carry out a variety of groups
It closes, creates or be transformed as needed special ring road in different location, the main object of the present invention is to establish a kind of changeable side
To city expressway plane ramp control system, greatly to promote the current effect of wagon flow at major urban arterial highway and auxiliary road intertexture
Rate.Simultaneously the present invention used in electronic device selection because these technologies are very mature, can according to actual needs (at
The preferences such as sheet, performance) it is selected, no longer enumerated here.
Claims (1)
1. a kind of city expressway plane ramp control system in changeable direction, which is characterized in that including being set to main stem most
Kerb lane and apart from exit ramp length be L1 the first wagon detector (1), be set to auxiliary road and apart from Entrance ramp it is long
Degree is the second wagon detector (2), special ring road (3), the first display (4) and the second display (5) of L2；The special circle
Between adjacent exit ramp and Entrance ramp, the first display (4) is arranged in main stem outermost lane and distance in road (3)
At exit ramp (3) L3, second display (5) is arranged in auxiliary road and at special ring road (3) L4；
First wagon detector (1) includes the first vehicle sensor and the first ramp controller；First vehicle detection
Device (1) can continue output pulse signal after detecting vehicle；First ramp controller compares including the first counter, first
Device and first memory, the output end of the first vehicle sensor of enabled termination of the first counter, first counter are being held
Generate cumulative numerical value under continuous pulse signal, an input terminal of the output termination first comparator of the first counter, first
Another input of comparator terminates first memory, is installed with the first control threshold in first memory, i.e., when first counts
After the output valve of device is greater than the first control threshold fixed in first memory, first comparator exports high level signal；
Second wagon detector (2) includes the second vehicle sensor and the second ramp controller；Second vehicle detection
Device (2) can continue output pulse signal after detecting vehicle；Second ramp controller include the second counter, the second comparator and
Second memory, the output end of the second vehicle sensor of enabled termination of the second counter, second counter is lasting
Cumulative numerical value is generated under pulse signal, two input terminals of output the second comparator of termination of the second counter, second compares
Another two inputs of device terminate second memory, are installed with the second control threshold in second memory, i.e., when the second counter
After output valve is greater than the second control threshold fixed in second memory, the second comparator exports high level signal；
The special ring road (3) is by along exit ramp to Entrance ramp direction, successively staggered first escalator
(6), the second escalator (7) and third escalator (8) are constituted, the first escalator (6), the second escalator
(7) and third escalator (8) is regular triangular prism, and the first escalator (6), the second escalator (7) and
Top view after three escalators (8) are staggered is trapezoidal；First escalator (6), the second escalator
(7) and third escalator (8) can raised maximum height it is identical and minimum altitude is flushed with ground；
The output end of the enabled termination first comparator and the second comparator of the control of first escalator (6), and fixed control
Molding formula is, the output signal of first comparator is the output signal of low level and the second comparator when being high level, first from
Dynamic elevator (6) are dropped to be flushed with ground, when the output signal of first comparator is high level, the first escalator (6)
Rise to maximum height；Otherwise the first escalator (6) rises to maximum height；
The output end of the enabled termination first comparator and the second comparator of the control of second escalator (7), and fixed control
Molding formula is, the output signal of first comparator is the output signal of low level and the second comparator when being high level, second from
Dynamic elevator (7) are dropped to be flushed with ground, when the output signal of first comparator is high level, the second escalator (7)
It drops to and is flushed with ground；Otherwise the second escalator (7) rises to maximum height；
The output end of the enabled termination first comparator and the second comparator of the control of third escalator (8), and fixed control
Molding formula is, the output signal of first comparator is the output signal of low level and the second comparator when being high level, third from
Dynamic elevator (8) rise to maximum height, when the output signal of first comparator is high level, under third escalator (8)
It is down to and is flushed with ground；Otherwise third escalator (8) rises to maximum height；
The output end of the enabled termination first comparator of first display (4) refers to when first comparator exports high level signal
The state for showing special ring road (3) is exit ramp；
The output end of enabled the termination first comparator and the second comparator of second display (5) exports low in first comparator
Indicate that the state of special ring road (3) is Entrance ramp when level signal and the second comparator output high level signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811168084.4A CN109183535B (en) | 2018-10-08 | 2018-10-08 | Urban expressway plane ramp control system capable of switching directions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811168084.4A CN109183535B (en) | 2018-10-08 | 2018-10-08 | Urban expressway plane ramp control system capable of switching directions |
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| Publication Number | Publication Date |
|---|---|
| CN109183535A true CN109183535A (en) | 2019-01-11 |
| CN109183535B CN109183535B (en) | 2023-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811168084.4A Active CN109183535B (en) | 2018-10-08 | 2018-10-08 | Urban expressway plane ramp control system capable of switching directions |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111785022A (en) * | 2020-07-13 | 2020-10-16 | 上海市城市建设设计研究总院（集团）有限公司 | Urban expressway main and auxiliary system traffic arrangement structure and control method |
| CN111915876A (en) * | 2019-05-08 | 2020-11-10 | 储诚茗 | Road traffic control system and control method thereof |
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| CN111915876A (en) * | 2019-05-08 | 2020-11-10 | 储诚茗 | Road traffic control system and control method thereof |
| CN111915876B (en) * | 2019-05-08 | 2021-10-01 | 储诚茗 | Road traffic control system and control method thereof |
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| Publication number | Publication date |
|---|---|
| CN109183535B (en) | 2023-03-14 |
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