CN110853381B - Scene-adaptive special duty vehicle signal priority control method - Google Patents
Scene-adaptive special duty vehicle signal priority control method Download PDFInfo
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- CN110853381B CN110853381B CN201911258312.1A CN201911258312A CN110853381B CN 110853381 B CN110853381 B CN 110853381B CN 201911258312 A CN201911258312 A CN 201911258312A CN 110853381 B CN110853381 B CN 110853381B
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/07—Controlling traffic signals
- G08G1/087—Override of traffic control, e.g. by signal transmitted by an emergency vehicle
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/07—Controlling traffic signals
Abstract
The invention discloses a scene self-adaptive special duty vehicle signal priority control method, which comprises the following steps: 1) judging the priority level of the current priority task according to three priority factors of type, space and time; 2) matching corresponding manual control authority, a priority response mode and a priority response condition according to the priority level; 3) and the manual control authority, the priority response mode and the priority response condition intervene in the whole task execution process. The method of the invention can reduce the influence on the normal traffic order to the maximum extent on the basis of ensuring the successful completion of the guard task.
Description
Technical Field
The invention belongs to the technical field of signal control, and particularly relates to a scene self-adaptive special duty vehicle signal priority control method.
Background
Special duty vehicle: generally, vehicles with special signs or special service are provided with special service signs, special vehicle license plates are hung on the vehicles, and the vehicles are provided with alarms and sign lamps. Such as ambulances, fire trucks, police cars, engineering wreckers and the like.
The special service vehicle priority control system is used as an important component in urban traffic signal control, is popularized and applied in most cities across the country, and can establish a green driving channel with quick response and no delay within the range of an intersection of urban traffic signal networking.
The prior passing of special service vehicles can affect the normal traffic order, and particularly, the prior passing of special service vehicles is executed near malls, schools and other large public places or in the morning and evening peaks, and after the special service tasks are executed, a long time is needed, even the traffic police are dredged on site, so that the normal traffic order at the intersection can be recovered. Therefore, special duty vehicles in the traditional mode take precedence, the traffic characteristics of passing areas of the vehicles and the factors such as the peak in the morning and evening are not considered, when the special duty vehicles are tracked to be about to arrive at the intersection, signal releasing phase locking is carried out in advance, a direct phase skipping mode is adopted during locking, the normal traffic order is greatly influenced, and the special duty vehicles are executed in traffic flow dense areas or the peak in the morning and evening and can be recovered to the normal traffic order within a long time.
Special duty tasks: the special service vehicles are guaranteed to pass through the intersection preferentially and reach the destination rapidly.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present invention provides a scene adaptive method for controlling signal priority of special duty vehicles, which can minimize the influence on normal traffic order on the basis of ensuring the successful completion of guard task.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the invention discloses a scene self-adaptive special duty vehicle signal priority control method, which comprises the following steps:
1) judging the priority level of the current priority task according to three factors of type, space and time;
2) matching corresponding manual control authority, a priority response mode and a priority response condition according to the priority level;
3) and the manual control authority, the priority response mode and the priority response condition intervene in the whole task execution process.
Further, the priority levels are divided into 7 priority levels, and different priority levels are matched with different control authorities, different priority response modes and different priority response conditions.
Further, the type factor is a special task type and is divided into three levels, namely high, medium and low.
Further, the space factor is divided into a core area and a non-core area.
Further, the time factors are divided into a peak period in the morning and the evening and a peak period in the average period.
Further, the step 1) specifically includes:
when the type factor is high, the priority is 1;
when the type factor is a middle level, if the space factor is a non-core area, the priority is 2; if the space factor is the core area, the priority is 3;
when the type factor is low and the space factor is a non-core area, if the time factor is a peak-off period, the priority is 4; if the time factor is the morning and evening peak period, the priority is 5;
when the type factor is low and the space factor is the core area, if the time factor is the peak flattening period, the priority is 6; if the time factor is the morning and evening peak, the priority is 7.
Further, the step 2) specifically includes:
when the priority is 1, the manual control authority is supported, the priority response mode is phase jump, the starting trigger distance in the priority response condition is 300 meters, and the ending trigger distance is 300 meters; when the priority is 2, the manual control authority is not supported, the priority response mode is phase jump, the starting trigger distance in the priority response condition is 300 meters, and the ending trigger distance is 300 meters; when the priority is 3, the manual control authority is not supported, the priority response mode is phase jump, the starting trigger distance in the priority response condition is 300 meters, and the ending trigger distance is 200 meters; when the priority is 4, the manual control authority is not supported, the priority response mode is phase jump, the starting trigger distance in the priority response condition is 200 meters, and the ending trigger distance is 200 meters; when the priority is 5, the manual control authority is not supported, the priority response mode is minimum green transition, the starting trigger distance in the priority response condition is 200 meters, and the ending trigger distance is 200 meters; when the priority is 6, the manual control authority is not supported, the priority response mode is the minimum green transition, the starting trigger distance in the priority response condition is 200 meters, and the ending trigger distance is 150 meters; when the priority is 7, the manual control authority is not supported, the priority response mode is the minimum green transition, the starting trigger distance in the priority response condition is 150 meters, and the ending trigger distance is 100 meters.
The invention has the beneficial effects that:
the invention sets a priority factor judgment mechanism with three layers of type, space and time, sets different priority levels, and simultaneously respectively matches different control authorities, priority response modes and priority response conditions according to the priority levels, thereby realizing the scene self-adaptive control of special duty vehicles and reducing the influence on normal traffic order to the maximum extent.
Drawings
FIG. 1 shows a schematic diagram of the method of the present invention.
Detailed Description
In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.
As shown in fig. 1, the method for priority control of special duty vehicle signals with adaptive scene according to the present invention includes the following steps:
1) judging the priority level of the current priority task according to three factors of type, space and time; the priority levels are divided into 7 priority levels, and different priority levels are matched with different control authorities, different priority response modes and different priority response conditions.
The type factor is a special task type and is divided into three levels, namely high, medium and low.
The space factor is divided into a core area and a non-core area.
The time factor is divided into early and late peak periods and peak-leveling periods.
When the type factor is high, the priority is 1;
when the type factor is a middle level, if the space factor is a non-core area, the priority is 2; if the space factor is the core area, the priority is 3;
when the type factor is low and the space factor is a non-core area, if the time factor is a peak-off period, the priority is 4; if the time factor is the morning and evening peak period, the priority is 5;
when the type factor is low and the space factor is the core area, if the time factor is the peak flattening period, the priority is 6; if the time factor is the morning and evening peak, the priority is 7.
2) Matching corresponding manual control authority, a priority response mode and a priority response condition according to the priority level;
when the priority is 1, the manual control authority is supported, the priority response mode is phase jump, the starting trigger distance in the priority response condition is 300 meters, and the ending trigger distance is 300 meters; when the priority is 2, the manual control authority is not supported, the priority response mode is phase jump, the starting trigger distance in the priority response condition is 300 meters, and the ending trigger distance is 300 meters; when the priority is 3, the manual control authority is not supported, the priority response mode is phase jump, the starting trigger distance in the priority response condition is 300 meters, and the ending trigger distance is 200 meters; when the priority is 4, the manual control authority is not supported, the priority response mode is phase jump, the starting trigger distance in the priority response condition is 200 meters, and the ending trigger distance is 200 meters; when the priority is 5, the manual control authority is not supported, the priority response mode is minimum green transition, the starting trigger distance in the priority response condition is 200 meters, and the ending trigger distance is 200 meters; when the priority is 6, the manual control authority is not supported, the priority response mode is the minimum green transition, the starting trigger distance in the priority response condition is 200 meters, and the ending trigger distance is 150 meters; when the priority is 7, the manual control authority is not supported, the priority response mode is the minimum green transition, the starting trigger distance in the priority response condition is 150 meters, and the ending trigger distance is 100 meters. The priority definition table is shown in table 1, as follows:
TABLE 1
3) And the manual control authority, the priority response mode and the priority response condition intervene in the whole task execution process.
According to the invention, the position and the running track of the vehicle are tracked, a green wave command is automatically issued to the traffic signal machine at the front intersection in real time according to the conditions of the position, the speed, the priority level and the like of the vehicle, and a corresponding green light signal is started to enable the vehicle to smoothly pass through the intersection. When the vehicle leaves the intersection, a 'recovery' instruction is given to the traffic signal machine, and the normal traffic signal is recovered.
The preferential response condition is used for controlling the conditions of turning on and off the green light signal, wherein the 'starting triggering distance' is used for controlling under which condition a 'green wave' instruction is given, and the 'ending triggering distance' is used for controlling under which condition a 'recovery' instruction is given, for example, the starting triggering distance is 300 meters, the ending triggering distance is 300 meters, when the vehicle is detected to be less than or equal to 300 meters away from the intersection, the 'green wave' instruction is given, the green light signal is turned on, when the vehicle is detected to be more than or equal to 300 meters away from the intersection, the 'recovery' instruction is given, and the normal traffic signal is recovered.
The preferential response mode is used for controlling a jump mode, a phase jump mode or a minimum green transition mode of a green light signal. If the normal green light release sequence at the intersection is as follows: the green light signal of north-south straight going, south-north left turn, east-west straight going, east-west left turn, the green light signal of "north-south straight going" is being released at the present crossing, the green light signal of "east-west straight going" needs to be released when the vehicle is preferred, "the east-west straight going" is passed after jumping the looks mode, issue "green ripples" instruction during the minimum green transition mode, the green light signal of "north-south left turn" can be released to the crossing signal earlier after issuing "green ripples" instruction during the minimum green transition mode, release "east-west straight going" green light signal again after having released minimum green light time.
The manual control authority is used for controlling whether manual intervention is allowed in the priority process, and when the manual control authority is supported, a 'green wave' instruction and a 'recovery' instruction can be manually issued in the priority execution process.
While the invention has been described in terms of its preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (1)
1. A scene adaptive special duty vehicle signal priority control method is characterized by comprising the following steps:
1) judging the priority level of the current priority task according to three priority factors of type, space and time;
2) matching corresponding manual control authority, a priority response mode and a priority response condition according to the priority level;
3) the manual control authority, the priority response mode and the priority response condition intervene in the whole task execution process;
the priority levels are divided into 7 priority levels, and different priority levels are matched with different control authorities, different priority response modes and different priority response conditions;
the type factor is a special duty task type and is divided into three levels, namely high level, medium level and low level; the space factor is divided into a core area and a non-core area; the time factor is divided into early and late peak periods and peak-balancing periods;
the step 1) specifically comprises the following steps:
when the type factor is high, the priority is 1;
when the type factor is a middle level, if the space factor is a non-core area, the priority is 2; if the space factor is the core area, the priority is 3;
when the type factor is low and the space factor is a non-core area, if the time factor is a peak-off period, the priority is 4; if the time factor is the morning and evening peak period, the priority is 5;
when the type factor is low and the space factor is the core area, if the time factor is the peak flattening period, the priority is 6; if the time factor is the morning and evening peak period, the priority is 7;
the step 2) specifically comprises the following steps:
when the priority is 1, the manual control authority is supported, the priority response mode is phase jump, the starting trigger distance in the priority response condition is 300 meters, and the ending trigger distance is 300 meters; when the priority is 2, the manual control authority is not supported, the priority response mode is phase jump, the starting trigger distance in the priority response condition is 300 meters, and the ending trigger distance is 300 meters; when the priority is 3, the manual control authority is not supported, the priority response mode is phase jump, the starting trigger distance in the priority response condition is 300 meters, and the ending trigger distance is 200 meters; when the priority is 4, the manual control authority is not supported, the priority response mode is phase jump, the starting trigger distance in the priority response condition is 200 meters, and the ending trigger distance is 200 meters; when the priority is 5, the manual control authority is not supported, the priority response mode is minimum green transition, the starting trigger distance in the priority response condition is 200 meters, and the ending trigger distance is 200 meters; when the priority is 6, the manual control authority is not supported, the priority response mode is the minimum green transition, the starting trigger distance in the priority response condition is 200 meters, and the ending trigger distance is 150 meters; when the priority is 7, the manual control authority is not supported, the priority response mode is the minimum green transition, the starting trigger distance in the priority response condition is 150 meters, and the ending trigger distance is 100 meters.
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| CN107730933A (en) * | 2017-09-11 | 2018-02-23 | 广州市高科通信技术股份有限公司 | A kind of special duty's traffic management method, electronic equipment, storage medium, system |
| CN108335499A (en) * | 2017-12-15 | 2018-07-27 | 上海电科智能系统股份有限公司 | A kind of bus signals mode of priority of dynamic priority grade |
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2019
- 2019-12-10 CN CN201911258312.1A patent/CN110853381B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006060562A1 (en) * | 2006-12-21 | 2008-06-26 | Dönhoff, Lutz | Traffic warning system, has control device in normal vehicle to reduce or suppress volume of audio system during reception of transmission signal |
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| CN101252627A (en) * | 2008-04-15 | 2008-08-27 | 北京航空航天大学 | Emergency tow car scheduling command system facing to airport |
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