CN111899538B - Intelligent marking system for non-signal control intersection and operation method thereof - Google Patents
Intelligent marking system for non-signal control intersection and operation method thereof Download PDFInfo
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- CN111899538B CN111899538B CN202010755180.XA CN202010755180A CN111899538B CN 111899538 B CN111899538 B CN 111899538B CN 202010755180 A CN202010755180 A CN 202010755180A CN 111899538 B CN111899538 B CN 111899538B
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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
- G08G1/081—Plural intersections under common control
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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
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/07—Controlling traffic signals
- G08G1/08—Controlling traffic signals according to detected number or speed of vehicles
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/095—Traffic lights
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/096—Arrangements for giving variable traffic instructions provided with indicators in which a mark progresses showing the time elapsed, e.g. of green phase
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Abstract
The invention discloses an intelligent marking system of an intersection without signal control and an operation method thereof, wherein the system comprises the following steps: the system comprises an intelligent marking equipment subsystem and a traffic flow detection subsystem, wherein the traffic flow detection subsystem comprises traffic flow detection equipment, and the traffic flow detection equipment is used for detecting and counting traffic flow information in a preset time period and sending the traffic flow information to the intelligent marking equipment subsystem; the intelligent marking equipment subsystem comprises a display module, an information receiving and transmitting module and a control decision module, wherein the information receiving and transmitting module receives traffic flow information and transmits the traffic flow information to the control decision module, the control decision module calculates passing results in different directions of the intersection according to the traffic flow information, and the display module displays an uncontrolled passing, deceleration yielding or parking yielding mark according to the passing results. By implementing the method and the system, the problems that the intelligent management level of the un-trusted intersection is low and the control sign cannot respond to the real-time change of the traffic flow of the intersection at the present stage are solved.
Description
Technical Field
The invention relates to the technical field of traffic control, in particular to an intelligent marking system of a non-signal control intersection and an operation method thereof.
Background
At present, an intersection without signal control mainly has two control modes, one is a completely uncontrolled intersection, and the other is a traffic control intersection. The yielding control intersection is divided into two yielding control modes, namely parking yielding and deceleration yielding. For a completely uncontrolled intersection, a traffic organization mode of 'first-come' of vehicles is adopted; if two vehicles in the intersecting directions arrive at the same time, leading the vehicle on the right side to advance; the vehicles of the same type arrive at the same time in opposite directions, the left-turning vehicle leads the straight-going vehicle, and the right-turning vehicle leads the left-turning vehicle.
For the way control intersection, the vehicle passing mode is mainly controlled in a form of fixing traffic sign boards, namely 'speed reduction way giving' or 'stopping way giving' is adopted. In the method, the road grade or traffic flow of the intersection road is usually considered at the initial stage of setting the signpost, and if the branch road intersects with the main road, the signpost is set to control the branch road vehicle to stop or decelerate to yield the main road vehicle; if the flow of the vehicles in the east-west direction is larger than that in the south-north direction, the sign board is set to control the vehicles in the south-north direction to stop or decelerate to drive the vehicles in the east-west direction.
However, as the scale of road network and the traffic conditions change, the traffic flow of each direction at the intersection may change to different degrees, and the traffic flow may change at different time periods of a day, different days of a week, and the like.
Disclosure of Invention
In view of this, the embodiment of the invention provides an intelligent marking system for an intersection without signal control and an operation method thereof, so as to solve the technical problem that traffic cannot be accurately directed by adopting a fixed traffic sign board at the intersection without signal control in the prior art.
The technical scheme provided by the invention is as follows:
a first aspect of an embodiment of the present invention provides an intelligent marking system for an intersection without signal control, where the intelligent marking system includes: the traffic flow detection subsystem comprises traffic flow detection equipment, the traffic flow detection equipment is used for detecting and counting traffic flow information in a preset time period and sending the traffic flow information to the intelligent marking equipment subsystem; the intelligent marking equipment subsystem comprises a display module, an information receiving and transmitting module and a control decision module, wherein the information receiving and transmitting module receives the traffic flow information and sends the traffic flow information to the control decision module, the control decision module calculates passing results in different directions of an intersection according to the traffic flow information, and the display module displays an uncontrolled passing, deceleration passing or parking passing mark according to the passing results.
Further, this intelligent marking system of no signal control intersection still includes: a central subsystem for managing the intelligent signage device subsystem.
Furthermore, the information transceiver module is also used for receiving a priority passing request of the special vehicle and sending a passing result to the intelligent internet automobile.
Further, the preset time period is obtained by calculation according to the design speed of each entrance lane of the non-signal control intersection and the distance between the traffic flow detection equipment and the intersection.
Further, the intelligent mark system is constructed and generated according to a standard system modeling language.
A second aspect of the embodiments of the present invention provides an operation method of an intelligent marking system at an intersection without signal control, where the operation method includes: acquiring traffic flow information of a non-signal control intersection within a preset time period; calculating to obtain passing results of the intersection in different directions according to the traffic flow information; and displaying an uncontrolled passing, deceleration yielding or parking yielding mark according to the passing result.
Further, calculating to obtain passing results of the intersection in different directions according to the traffic flow information, wherein the passing results comprise: judging whether a priority passing request of a special vehicle is received within a preset time period; when a priority passing request of a special vehicle is received, setting a passing result of an entrance lane where the special vehicle is located as uncontrolled passing; and setting the passing results of the rest of the entrance lanes of the intersection as parking and giving way.
Further, when a priority passing request of the special vehicle is received, the passing result of the entrance lane where the special vehicle is located is set to be uncontrolled passing, and the method comprises the following steps: when a priority passing request of a special vehicle is received, judging the number of entrance lanes where the special vehicle sending the request is located; when the number of the special vehicles is at least two, determining an entrance lane where the first special vehicle sending the priority passing request is located according to the sequence of the received priority passing requests; and setting the passing result of the entrance lane where the first special vehicle which sends the priority passing request is positioned as the uncontrolled passing.
Further, the operation method of the intelligent marking system of the intersection without the signal control further comprises the following steps: when a priority passing request of a special vehicle is not received, determining the direction of an entrance lane with the maximum traffic flow according to the traffic flow information; setting the passing result in the direction of the entrance lane with the maximum traffic flow as uncontrolled passing; and setting the passing result of the other directions of the inlet lanes at the intersection as a parking yielding or a deceleration yielding.
Further, the setting of the passing result of the other directions of the entrance lane at the intersection as a parking yielding or a deceleration yielding comprises the following steps: judging whether the traffic flow in the direction of the entrance lane with the maximum traffic flow is greater than a preset threshold value or not; when the traffic result is greater than the preset threshold value, setting the traffic result in the other entrance lane directions of the intersection as a parking yielding line; and when the speed is less than or equal to the preset threshold value, setting the passing result in the other inlet lane directions of the intersection as deceleration passing.
The technical scheme provided by the invention has the following effects:
according to the intelligent marking system of the non-signal control intersection and the operation method thereof provided by the embodiment of the invention, the traffic flow detection subsystem is arranged at the non-signal control intersection to count the number of vehicles driving into the intersection from different entrance lanes, and meanwhile, the intelligent marking equipment subsystem is arranged to generate passing results in different directions according to the number of the vehicles counted by the traffic flow detection subsystem. Therefore, the intelligent marking system of the non-signal control intersection and the operation method thereof provided by the embodiment of the invention solve the problems that the intelligent management level of the non-signal control intersection is low in the current stage and the control mark cannot respond to the real-time change of the traffic flow of the intersection, eliminate the traffic conflict among vehicles in different driving directions at the non-signal control intersection, ensure the driving safety, simultaneously adjust the traffic control mode in real time according to the actual traffic flow, reasonably distribute the space resources and the time resources of the non-signal control intersection, and improve the traffic efficiency and the service level of the non-signal control intersection.
The intelligent marking system of the non-signal control intersection and the operation method thereof provided by the embodiment of the invention can provide the communication capacity between the intelligent internet-connected automobile and the traffic marking of the non-signal control intersection, enhance the identification capacity of the intelligent internet-connected automobile on the control mode of the non-signal control intersection, adapt to the traffic condition that the traditional automobile and the intelligent internet-connected automobile are mixed in the future stage, and meet the vehicle-road cooperative demand of the intelligent internet-connected automobile under the traffic condition. Meanwhile, the intelligent marking system of the non-signal control intersection and the operation method thereof provided by the embodiment of the invention can solve the problem of the prior traffic demand of special vehicles (fire fighting, medical treatment, emergency rescue and the like) at the non-signal control intersection, provide real-time prior traffic right for the traffic direction of the special vehicles, ensure the traffic safety of the vehicles and simultaneously improve the response capability of emergency events.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a block diagram of a smart signage system for an un-trusted intersection according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the structure of an intelligent signage system at an un-trusted intersection according to an embodiment of the present invention;
FIG. 3 is a block diagram of an intelligent signage system at an un-trusted intersection according to another embodiment of the present invention;
FIG. 4 is a SysML module definition diagram according to an embodiment of the present invention;
FIG. 5 is a SysML activity diagram, according to an embodiment of the present invention;
FIG. 6 is a flow chart of a method of operating an intelligent signage system at an un-trusted intersection according to an embodiment of the present invention;
fig. 7 is a flow chart of a method of operating an intelligent signage system at an un-trusted intersection according to another embodiment of the invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
Furthermore, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
An embodiment of the present invention provides an intelligent marking system for an intersection without signal control, as shown in fig. 1, the intelligent marking system includes: the system comprises an intelligent marking equipment subsystem 1 and a traffic flow detection subsystem 2, wherein the traffic flow detection subsystem 2 comprises traffic flow detection equipment 21, and the traffic flow detection equipment 21 is used for detecting and counting traffic flow information in a preset time period and sending the traffic flow information to the intelligent marking equipment subsystem 1; the intelligent marking equipment subsystem 1 comprises a display module 11, an information receiving and sending module 12 and a control decision module 13, wherein the information receiving and sending module 12 receives traffic flow information and sends the traffic flow information to the control decision module 13, the control decision module 13 calculates passing results in different directions of an intersection according to the traffic flow information, and the display module 11 displays an uncontrolled passing, deceleration passing or parking passing mark according to the passing results.
According to the intelligent marking system of the non-signal control intersection, provided by the embodiment of the invention, the number of vehicles driven into the intersection from different entrance roads is counted by arranging the traffic flow detection subsystem at the non-signal control intersection, and meanwhile, the intelligent marking equipment subsystem is arranged to generate passing results in different directions according to the number of the vehicles counted by the traffic flow detection subsystem. Therefore, the intelligent marking system for the non-signal control intersection provided by the embodiment of the invention solves the problems that the intelligent management level of the non-signal control intersection is low in the current stage, and the control mark cannot respond to the real-time change of the traffic flow of the intersection, eliminates the traffic conflict among vehicles in different driving directions at the non-signal control intersection, guarantees the driving safety, can adjust the traffic control mode in real time according to the actual traffic flow, reasonably distributes the space resource and the time resource of the non-signal control intersection, and improves the traffic efficiency and the service level of the non-signal control intersection.
In one embodiment, as shown in fig. 2, taking the intersection as an example, the traffic flow detection device 21 may be disposed at a distance from the stop line at an entrance lane of the non-signal controlled intersection. Optionally, the detection of the traffic flow detection device 21 may be implemented by using a detection method such as a loop coil, a video, and a microwave radar, and the detection method of the traffic flow detection device 21 may also be another detection method.
In one embodiment, the detection period of the traffic flow detection device, that is, the preset time period, may be calculated according to the designed vehicle speed of each entrance road of the intersection without signal control and the distance from the intersection to the traffic flow detection device. Wherein, the specific meaning of the design vehicle speed is as follows: the maximum speed of a common driver can keep safe and comfortable driving on a road section under the conditions of good climate and low traffic density. Namely: when the operation of the automobile is only influenced by the conditions of the road, the drivers with medium driving technology can keep the maximum driving speed of safe and smooth driving. Specifically, the design vehicle speeds at different highway grades may be determined according to table 1.
TABLE 1
| Road grade | Highway with a light-emitting diode | First-level highway | Second-level road | Three-level road | Four-level road |
| Design vehicle speed (km/h) | 120 100 80 | 100 80 60 | 80 60 40 | 40 30 | 20 |
According to the statistical result of the scientific research survey history, the vehicle is decelerated to 85% of the original driving speed in the process of approaching the non-signal control intersection. The preset time period duration Δ T can thus be calculated as: delta T is 0.85V 0 ＊L 0 Wherein，V 0 Indicates the design vehicle speed, L 0 Indicating the distance of the traffic flow detection device from the intersection. Alternatively, 0.85 in the preset time period calculation formula can be adjusted according to the actual conditions of the un-controlled intersection, for example, at the intersection with poor sight distance conditions, the driver may drive more cautiously, the deceleration degree is larger in the process of approaching the intersection, and 0.85 can be reduced appropriately.
In an embodiment, after the control decision module 13 of the intelligent sign device subsystem 1 calculates the passing result, the display module 11 may execute the passing result within a preset time period to display the corresponding control mode. At this time, the traffic flow detection subsystem 2 enters the vehicle detection of the next cycle. As shown in fig. 2, taking an intersection as an example, the display module 11 may be disposed on the right of four intersections. Optionally, the display module 11 may be provided with a control mode corresponding to the LED display screen, and may also use other display modes, such as a liquid crystal screen type, a semi-transparent panel, and an optical fiber conduction type, to perform display.
In an embodiment, the information transceiver module 12 of the intelligent sign device subsystem 1 is further configured to receive a priority passing request of a special vehicle, and send a passing result to the intelligent internet automobile. Specifically, a communication module, such as a V2I communication (vehicle-road communication) module, may be provided in the intelligent sign device subsystem 1. Through the communication module, the intelligent marking device subsystem can communicate with the intelligent networked automobile, for example, the information transceiver module can receive a priority traffic request sent by the intelligent networked automobile, and the intelligent networked automobile can be an emergency vehicle such as 120 and 119, and can also be a vehicle for executing a special task. Meanwhile, the information receiving and sending module can also send information to the intelligent internet vehicles in the communication range, for example, the current passing result and other contents can be sent. The wireless communication method between the smart internet automobile and the smart signage system is not limited to the V2I communication method, and may be a wireless communication method for internet of vehicles such as 5G, LTE-V2X, DSRC, and the like.
The intelligent marking system of the non-signal control intersection provided by the embodiment of the invention can provide the communication capacity between the intelligent networked automobile and the traffic marking of the non-signal control intersection, enhance the identification capacity of the intelligent networked automobile on the control mode of the non-signal control intersection, adapt to the traffic condition that the traditional automobile and the intelligent networked automobile are mixed in the future stage, and meet the vehicle-road cooperation requirement of the intelligent networked automobile under the traffic condition. Meanwhile, the intelligent marking system for the non-signal control intersection provided by the embodiment of the invention can solve the problem of the prior passing requirement of special vehicles (fire fighting, medical treatment, emergency rescue, rescue and the like) at the non-signal control intersection, provides a real-time prior passing right for the passing direction of the special vehicles, ensures the passing safety of the vehicles and simultaneously improves the response capability of emergency events.
In one embodiment, as shown in fig. 3, the intelligent marking system for an intersection without signal control further includes: and the central subsystem 3 is used for managing the intelligent marking equipment subsystem 1. Specifically, the central subsystem 3 monitors and controls the intelligent marking equipment subsystem 1 in the administrative region, and can perform information interaction with the intelligent marking equipment subsystem 1 in a remote wireless communication mode.
Optionally, the central subsystem may include an information system including a host, a network device, and the like, and has a large display screen for visual display, so that an operation manager can check, manage, and regulate the operation of the intelligent marking device subsystem in the area on line in real time, and can acquire the traffic flow information received by the information transceiver module, and draw a thematic map for display according to the acquired traffic flow information. Meanwhile, the central subsystem can be configured with basic information of the intelligent mark equipment subsystem, and can also visually display working and fault information of the intelligent mark equipment subsystem. In addition, the central subsystem can also remotely control the display of the display module in the intelligent mark equipment subsystem, and particularly, when a remote regulation and control instruction from the central subsystem is received in the running process of the intelligent mark equipment subsystem, a corresponding control mode is displayed or running operation is stopped according to the instruction.
In one embodiment, the smart signage system can be built and generated according to a standard system modeling language. Sysml (systems Modeling language) is a general graphical Modeling language for specifying, analyzing, designing, and validating complex systems that may include hardware, software, information, personnel, programs, and facilities. In particular, the language provides a graphical representation with a semantic basis for modeling system requirements, behaviors, structures, and parameters for integration with other engineering analysis models. As shown in fig. 4 and 5, a SysML module definition diagram and an activity diagram are respectively established for the intelligent marking system of the non-signal control intersection, and are used for presenting standardized system design and guiding engineering practice.
The embodiment of the invention also provides an operation method of the intelligent marking system of the intersection without the signal control, as shown in fig. 6, the method comprises the following steps:
step S101: acquiring traffic flow information of a non-signal control intersection within a preset time period; specifically, traffic flow detection equipment can be arranged at a position, at a certain distance from a stop line, of an entrance lane of the non-signal control intersection, and the number of vehicles driving into the intersection from each entrance lane of the intersection in a set time period is counted, so that corresponding traffic flow information is obtained. Optionally, the detection of the traffic flow detection device may be implemented by using a detection method such as a loop coil, a video, a microwave radar, and the like, and in addition, the detection method of the traffic flow detection device may also be another detection method.
Step S102: and calculating to obtain the passing results of the intersection in different directions according to the traffic flow information.
In one embodiment, before calculating the traffic flow information, it may be first determined whether a priority passing request of a special vehicle is received within a preset time period; when a priority passing request of a special vehicle is received, setting a passing result of an entrance lane where the special vehicle is located as uncontrolled passing; and setting the passing results of the rest of the entrance lanes of the intersection as parking and giving way. Optionally, when a plurality of entrance lanes have special vehicles arriving and all send priority passing requests within a preset time period, determining the entrance lane where the first special vehicle sending the priority passing request is located according to the sequence of the received priority passing requests; and setting the passing result of the entrance lane where the first special vehicle which sends the priority passing request is positioned as the uncontrolled passing.
In one embodiment, when a priority passing request of a special vehicle is not received, determining the direction of an entrance way with the maximum traffic flow according to traffic flow information; setting the passing result in the direction of the entrance lane with the maximum traffic flow as uncontrolled passing; and setting the passing result of the other directions of the inlet lanes at the intersection as a parking yielding or a deceleration yielding.
Optionally, when the passing results of the other entrance lane directions of the intersection are set, whether the traffic flow in the entrance lane direction with the maximum traffic flow is greater than a preset threshold value or not can be judged; when the traffic result is greater than the preset threshold value, setting the traffic result in the other entrance lane directions of the intersection as a parking yielding line; and when the speed is less than or equal to the preset threshold value, setting the passing result in the other inlet lane directions of the intersection as deceleration passing.
Step S103: and displaying an uncontrolled passing, deceleration yielding or parking yielding mark according to the passing result. Specifically, after the intelligent marking device subsystem calculates the passing results of the intersection in different directions according to the traffic flow information, the display module of the intelligent marking device subsystem can display different traffic signs according to the passing results.
According to the operation method of the intelligent marking system of the non-signal control intersection, the traffic flow detection subsystem is arranged at the non-signal control intersection to count the number of vehicles driving into the intersection from different entrance lanes, and meanwhile, the intelligent marking equipment subsystem is arranged to generate passing results in different directions according to the number of vehicles counted by the traffic flow detection subsystem. Therefore, the operation method of the intelligent marking system of the non-signal control intersection provided by the embodiment of the invention solves the problems that the intelligent management level of the non-signal control intersection is low and the control marking cannot respond to the real-time change of the traffic flow of the intersection in the current stage, eliminates the traffic conflict among vehicles in different driving directions at the non-signal control intersection, ensures the driving safety, can adjust the traffic control mode in real time according to the actual traffic flow, reasonably distributes the space resource and the time resource of the non-signal control intersection, and improves the traffic efficiency and the service level of the non-signal control intersection.
In an embodiment, the operation method of the intelligent marking system of the intersection without the signal control provided by the embodiment of the present invention may be implemented according to a flow shown in fig. 7: firstly, starting an intelligent marking system, starting detection by a traffic flow detection subsystem of each entrance lane, assuming that an intersection is a cross intersection, marking each direction of the intersection as D1, D2, D3 and D4, and counting the number of detected vehicles in a delta T time period by each entrance lane detection device and marking the number of the detected vehicles as N1, N2, N3 and N4; meanwhile, an information receiving and sending module in the intelligent marking equipment subsystem judges whether a special vehicle priority passing request is received or not, and when the special vehicle priority passing request is received, the passing result of an entrance lane where the special vehicle is located is set to be uncontrolled passing; and setting the passing results of other entrance lanes of the intersection as parking and line giving, and displaying by a display module in the intelligent marking equipment subsystem according to the passing results. When a plurality of entrance lanes have special vehicles arriving and send priority passing requests within a preset time period, determining the entrance lane where the first special vehicle sending the priority passing request is located according to the sequence of the received priority passing requests; and setting the passing result of the entrance lane where the first special vehicle sending the priority passing request is positioned as uncontrolled passing, and setting the passing results of the other entrance lanes at the intersection as parking giving-way.
When a priority passing request of a special vehicle is not received, determining the direction of an entrance way with the maximum traffic flow according to the traffic flow information; setting the passing result in the direction of the entrance lane with the maximum traffic flow as uncontrolled passing; and setting the passing result of the other directions of the inlet lanes at the intersection as a parking yielding or a deceleration yielding. For example, when the direction of the entrance lane with the largest traffic flow is D1, that is, N1 is the maximum value of the number of vehicles, at this time, the magnitude of N1 and the preset threshold N0 may be determined, when N1 is greater than N0, the D1 direction display module or the signboard displays uncontrolled traffic, the remaining directions display a parking yield line, when N1 is less than or equal to N0, the D1 direction display is unchanged, and the remaining directions display a deceleration yield line. Further, when the entrance lane direction in which the traffic flow is the largest is D2, D3, or D4, the display modules of the respective directions may be set in the same manner as when the maximum value is N1.
In addition, in the process that the display module or the signboard displays the corresponding passing result, the intelligent sign equipment subsystem can monitor whether a pause operation instruction of the central subsystem is received or not in real time, and when the pause operation instruction is received, the display module is controlled to stop displaying; and when the operation pause instruction is not received, continuing to display or detecting the next period according to the flow.
Although exemplary embodiments and their advantages have been described in detail, those skilled in the art can make various changes, substitutions and alterations herein without departing from the spirit and scope of the invention as defined by the appended claims. For other examples, one of ordinary skill in the art will readily appreciate that the order of the process steps may be varied while maintaining the scope of the present invention.
Moreover, the scope of the present application is not intended to be limited to the particular embodiments of the process, machine, manufacture, composition of matter, means, methods and steps described in the specification. As one of ordinary skill in the art will readily appreciate from the disclosure of the present invention, processes, machines, manufacture, compositions of matter, means, methods, or steps, presently existing or later to be developed, that perform substantially the same function or achieve substantially the same result as the corresponding embodiments described herein may be utilized according to the present invention. Accordingly, the appended claims are intended to include within their scope such processes, machines, manufacture, compositions of matter, means, methods, or steps.
Claims (7)
1. The utility model provides an intelligent marking system at no signal control crossing which characterized in that includes: an intelligent marking device subsystem and a traffic flow detection subsystem,
the traffic flow detection subsystem comprises traffic flow detection equipment, and the traffic flow detection equipment is used for detecting and counting traffic flow information in a preset time period and sending the traffic flow information to the intelligent marking equipment subsystem;
the intelligent marking equipment subsystem comprises a display module, an information receiving and sending module and a control decision module, wherein the information receiving and sending module receives the traffic flow information and sends the traffic flow information to the control decision module, the control decision module calculates the traffic results in different directions of the intersection according to the traffic flow information, and the display module displays an uncontrolled traffic, deceleration yielding or parking yielding mark according to the traffic results;
the preset time period is obtained by calculation according to the design speed of each entrance lane of the non-signal control intersection and the distance between the traffic flow detection equipment and the intersection;
the control decision module calculates and obtains passing results of the intersection in different directions according to the traffic flow information, and the method comprises the following steps:
judging whether a priority passing request of a special vehicle is received within a preset time period;
when a priority passing request of a special vehicle is not received, determining the direction of an entrance lane with the maximum traffic flow according to the traffic flow information;
setting the passing result in the direction of the entrance lane with the maximum traffic flow as uncontrolled passing;
judging whether the traffic flow in the direction of the entrance lane with the maximum traffic flow is greater than a preset threshold value or not;
when the traffic result is greater than the preset threshold value, setting the traffic result in the other entrance lane directions of the intersection as a parking yielding line;
and when the speed is less than or equal to the preset threshold value, setting the passing result of the other directions of the inlet lanes at the intersection as a speed reduction passing.
2. The intelligent marking system of an un-trusted intersection of claim 1, further comprising: a central subsystem for managing the intelligent signage device subsystem.
3. The intelligent marking system for the signalless intersection according to claim 1, wherein the information transceiver module is further configured to receive a priority traffic request of a special vehicle and send a traffic result to the intelligent networked automobile.
4. The intelligent marking system for an intersection without signal control of claim 1, wherein the intelligent marking system is constructed and generated according to a standard system modeling language.
5. An operation method of an intelligent marking system of an intersection without signal control is characterized by comprising the following steps:
acquiring traffic flow information of the non-signal control intersection within a preset time period, wherein the preset time period is obtained by calculation according to the design speed of each entrance lane of the non-signal control intersection and the distance between traffic flow detection equipment and the intersection;
calculating to obtain passing results of the intersection in different directions according to the traffic flow information;
displaying an uncontrolled passing, deceleration yielding or parking yielding mark according to the passing result;
calculating to obtain passing results of the intersection in different directions according to the traffic flow information, wherein the passing results comprise:
judging whether a priority passing request of a special vehicle is received within a preset time period;
when a priority passing request of a special vehicle is not received, determining the direction of an entrance lane with the maximum traffic flow according to the traffic flow information;
setting the passing result in the direction of the entrance lane with the maximum traffic flow as uncontrolled passing;
judging whether the traffic flow in the direction of the entrance lane with the maximum traffic flow is greater than a preset threshold value or not;
when the traffic result is greater than a preset threshold value, setting the traffic result in the other entrance lane directions of the intersection as a parking give-way;
and when the speed is less than or equal to the preset threshold value, setting the passing result in the other inlet lane directions of the intersection as deceleration passing.
6. The method for operating the intelligent marking system of the signalless intersection according to claim 5, wherein the traffic results of the intersection in different directions are calculated according to the traffic information, and further comprising:
when a priority passing request of a special vehicle is received, setting a passing result of an entrance lane where the special vehicle is located as uncontrolled passing;
and setting the passing results of the rest of the entrance lanes of the intersection as parking and giving way.
7. The method for operating an intelligent marking system at an intersection without signal control according to claim 6, wherein when a priority traffic request of a special vehicle is received, setting a traffic result of an entrance lane where the special vehicle is located as an uncontrolled traffic comprises:
when a priority passing request of a special vehicle is received, judging the number of entrance lanes where the special vehicle sending the request is located;
when the number of the special vehicles is at least two, determining an entrance lane where the first special vehicle sending the priority passing request is located according to the sequence of the received priority passing requests;
and setting the passing result of the entrance lane where the first special vehicle sending the priority passing request is positioned as the uncontrolled passing.
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