CN109615884A - Wireless traffic signal light management system - Google Patents
Wireless traffic signal light management system Download PDFInfo
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- CN109615884A CN109615884A CN201811560050.XA CN201811560050A CN109615884A CN 109615884 A CN109615884 A CN 109615884A CN 201811560050 A CN201811560050 A CN 201811560050A CN 109615884 A CN109615884 A CN 109615884A
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Classifications
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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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/713—Spread spectrum techniques using frequency hopping
- H04B1/715—Interference-related aspects
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/713—Spread spectrum techniques using frequency hopping
- H04B1/715—Interference-related aspects
- H04B2001/7152—Interference-related aspects with means for suppressing interference
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Traffic Control Systems (AREA)
Abstract
Mode the wireless traffic signal light management system of traffic control signal securely and reliably can be transmitted by wireless communication the purpose of the present invention is to provide a kind of.Wireless traffic signal light management system provided by the invention, all traffic lights for any one intersection to be arranged carry out operation management, have the feature that, comprising: for issuing the master control device of traffic control signal；It is arranged in a one-to-one correspondence the sub- control device of plural number on all Traffic signal posts of intersection；And the signal transmitting apparatus for carrying out signal transmission between master control device and sub- control device, include: a plurality of communication nodes of the communication gate, connect one to one communication gate and all sub- control devices that are connected with master control device, wherein, it is communicated between communication gate and a plurality of communication nodes based on communication and frequency hopping communications mechanism and time synchronization communication mechanism.
Description
Technical field
The invention belongs to traffic lights management domains, and in particular to one kind can by wireless communication mode it is safe and reliable
Transmit the wireless traffic signal light management system of traffic control signal.
Background technique
Signal lamp of the traffic lights as the operation that directs traffic, is widely used on the road of intersection.It
It is generally made of red light, green light, amber light, is the traffic lights of international uniform.Red light indicates that no through traffic, and green light indicates to permit
Current, amber light indicates warning.In order to guarantee the traffic order of traffic, the importance of traffic lights is self-evident, this is just
Strict exploration to be carried out to the installation site of traffic lights before determining construction, to guarantee that traffic lights are completed in construction
It avoids disturbed in operational process afterwards and is out of order.
Generally, the traffic lights at a crossing are controlled by a master controller, on each lamp stand at the crossing
All signal lamps on the lamp stand are controlled equipped with a sub-controller；And the traffic control between master controller and sub-controller
Signal transmission, carries out typically by way of wired connection, and the communications cable requires to be embedded in underground with digging.However this
Ground can only be excavated and be checked again when communication, which is broken down, to be needed to check route by kind wired communication mode, or working as need to
When being reconstructed to signal lamp, ground can only also be excavated and be reconstructed again, spent human and material resources, road traffic is also resulted in
Interference, it is time-consuming very long.
In view of the above problems, also occurring the traffic letter for substituting original wired communication mode using wifi communication mode now
Signal lamp has well solved the deficiency of conventional wireline communication mode.However due to personal hot spot be increasing and base station letter
Reasons, the wifi wireless communications such as number interference are easy to disturbed and sub-controller are caused not receive the traffic that master controller is sent
Signal is controlled, corresponding signal lamp also will be unable to work on, and the personnel that need repairing maintenance, which is restarted, can just rework, and give road
Traffic brings very big pressure, it is easy to cause traffic order chaotic.
In conclusion traffic lights management domain, which lacks one kind, mode to carry out signal transmission again by wireless communication
It can guarantee the safe and reliable managing device of transmission process.
Summary of the invention
The present invention is to carry out to solve the above-mentioned problems, and it is an object of the present invention to provide one kind being capable of mode by wireless communication
The wireless traffic signal light management system of safe and reliable transmission traffic control signal.
The present invention provides a kind of wireless traffic signal light management systems, the institute for any one intersection to be arranged
There are traffic lights to carry out operation management, have the feature that, comprising: the master control for issuing traffic control signal fills
It sets；It is arranged in a one-to-one correspondence the sub- control device of plural number on all Traffic signal posts of intersection；And in master control
Between device and sub- control device carry out signal transmission signal transmitting apparatus, include: the communication being connected with master control device
A plurality of communication nodes of gateway, connect one to one communication gate and all sub- control devices, wherein communication gate and multiple
It is communicated between several communication nodes based on communication and frequency hopping communications mechanism and time synchronization communication mechanism.
It in wireless traffic signal light management system provided by the invention, can also have the following features: wherein, communication
Gateway includes: gateway ontology, central node unit and network management unit, one end of gateway ontology are connected with master control device
It connects, the other end is connected with central node unit, and it is logical that wireless HART is equipped in central node unit and all communication nodes
Believe module, so that central node unit can be wirelessly communicated with each communication node, network management unit is used for central node list
First communication network formed between all communication nodes carries out network management.
In wireless traffic signal light management system provided by the invention, it can also have the following features: wherein, logical
It is that each communication node is assigned with multiple communication channels, frequency hopping communications mechanism are as follows: center by network management unit in communication network
Between node unit and arbitrary communication node or between two communication nodes, when being communicated based on pre-assigned more
A communication channel switching uses.
In wireless traffic signal light management system provided by the invention, it can also have the following features: wherein, the time
Synchro Communication Specification Applied are as follows: after central node unit receives the traffic control signal that master control device is sent from gateway ontology,
The traffic control signal is sent to all communication nodes in a broadcast manner, so that all communication nodes receive simultaneously
Traffic control signal, further such that all sub- control devices can control the signal lamp group on corresponding Traffic signal post simultaneously
Execute respective operations.
The action and effect of invention
Related wireless traffic signal light management system according to the present invention, the traffic control signal that master control device issues
It can be sent to communication gate first, communication gate is sent to all communication nodes simultaneously based on time synchronization communication mechanism, often
A communication node is then forwarded to corresponding sub- control device after receiving traffic control signal, to control all traffic signals
Lamp is synchronous to execute respective operations；In addition, frequency hopping communications mechanism is used in the communication of communication gate and each communication node, this
Sample, even if the channel of present communications is interfered, and communication next time can select other channels to carry out by frequency hopping communications mechanism
Communication, so that communication next time be avoided equally to be interfered, ensure that traffic control signal, mode is safe and reliable by wireless communication
Ground transmission.
Detailed description of the invention
Fig. 1 is crossroad access signal lamp distribution schematic diagram in the embodiment of the present invention；And Fig. 2 is reality of the invention
Apply the structural schematic diagram of wireless traffic signal light management system in example.
Specific embodiment
It is real below in order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention
Example combination attached drawing is applied to be specifically addressed wireless traffic signal light management system of the invention.
Fig. 1 is crossroad access signal lamp distribution schematic diagram in the embodiment of the present invention.
As shown in Figure 1, in the present embodiment, being described in detail by taking crossroad 10 as an example.The crossroad 10 is formed
The vehicle pass-through direction of four direction.Four vehicle signal lamp stands, 11, eight pedestrians are provided at the crossroad 10
Traffic signal post 12.
Four vehicle signal lamp stands 11 are located at the right side of four roads, and so-called right side is logical based on every road
From the point of view of line direction.In the present embodiment, four vehicle signal lamp stands 11 in addition to the position of installation it is different, other structures are all
It is identical, only one of them is described in detail herein, is omitted to other three detailed descriptions.
There are three signal lamp groups for installation on each vehicle signal lamp stand 11, are respectively: left rotaring signal lamp group 11a, straight trip
Signal lamp group 11b, right turn signal lamp group 11c allow the corresponding direction of vehicle signal lamp stand 11 to sail and carry out vehicle according to corresponding mesh
LED status selection directly current still wait for marking direction is passed through.Each signal lamp group separately includes: a red light, one
Green light and an amber light.
Eight pedestrian signal lamp stands 12 are located at the two sides roadside of four roads and close to intersections.In this implementation
In example, eight pedestrian signal lamp stands 12 are different in addition to the position of installation, other structures be all it is identical, herein only to one of them
It is described in detail, omits to other seven detailed descriptions.
Be equipped with a signal lamp group, i.e. right of way signal lamp group 12a on each pedestrian signal lamp stand 12, include: one red
Lamp and a green light.The right of way signal lamp group 12a is arranged towards road, for allowing the pedestrian on road opposite according to the signal lamp
Only state selection is directly current or waits passage.
In the present embodiment, in order to which vehicle and pedestrian can orderly be passed through at the crossroad 10, current effect is improved
Rate avoids traffic jam, is equipped with not shown wireless traffic signal light management system 20 in figure at the crossroad 10, passes through
Traffic signals lamp management system shows current (green light lights) or waiting (red light to manage all signal lamp groups according to set sequence
Light) state, whether the passage of guiding vehicle and pedestrian.
Fig. 2 is the structural schematic diagram of traffic signals lamp management system in the embodiment of the present invention.
As shown in Fig. 2, wireless traffic signal light management system 20 is used for the vehicle and pedestrian in Fig. 1 at crossroad 10
Carry out traffic administration, guarantee that its is orderly current.
Wireless traffic signal light management system 20 includes: 21,12 sub- control devices 22 of a master control device and
Signal transmitting apparatus 30.
The built-in computer program of master control device 21 passes through the traffic control signal for issuing traffic control signal
To control all signal lamp groups on eight pedestrian signal lamp stands 10 and four vehicle signal lamp stands 20 by the rule set
Corresponding lamp is lighted, so that vehicles and pedestrians or waiting to indicate the crossroad, guarantee current order.
12 sub- control devices 22 are arranged on four vehicle signal lamp stands 11 correspondingly and eight pedestrian's letters
On signal lamp bar 12, for controlling the display state of the signal lamp group on corresponding Traffic signal post, which includes: that red light is bright
It rises, green light lights or amber light lights.In the present embodiment, 12 sub- control devices 22 in addition to the position of installation it is different, it is other
Structure is all identical.Every one end of sub- control device 22 is connected with all signal lamp groups on corresponding Traffic signal post,
The other end is connected with traffic signals wireless notification device 30, to receive the traffic control letter of the sending of master control device 21
Number, it further controls corresponding signal lamp group and executes scheduled display state.
Signal transmitting apparatus 30 is arranged between the sub- control device 22 of master control device 21 and 12, is used for master control
The traffic control signal that device 21 issues is sent to every sub- control device 22, i.e., for carrying out the transmission of traffic control signal.
As shown in Fig. 2, signal transmitting apparatus 30 includes: communication gate 31 and 12 communication node 32.
One end of communication gate 31 is connected with master control device 21, and the other end is connected with 12 communication nodes 32,
Traffic control signal for issuing master control device 21 is transferred to all communication nodes 32.
The other end of 12 communication nodes 32 connects one to one with 12 sub- control devices 22, is used for communication network
It closes the traffic control signal that 31 transmission come and is sent to corresponding sub- control device 22.
As also shown in fig. 2, communication gate 31 includes: gateway ontology 311, central node unit 312 and network management list
Member 313.
One end of gateway ontology 311 is connected with master control device 21, and the other end is connected with central node unit 312,
For receiving the traffic control signal of the sending of master control device 21 and the traffic control signal being sent to central node unit
312.In the present embodiment, the function of gateway ontology 311 is identical with gateway in the prior art, and details are not described herein.
Central node unit 312 has not shown 13 ports, one of port and 311 phase of gateway ontology in figure
Connection, other 12 ports communicate correspondingly with 12 communication nodes 32 to be connect.Central node unit 312 is used for
It receives the traffic control signal that gateway ontology 311 is sent and sends it to all communication nodes 32.By description as it can be seen that in
Form star-network between heart node unit 312 and 12 communication node 32, enable central node unit 312 with it is every
A communication node 32 is directly communicated.
Network management unit 313 is connected with gateway ontology 311, for center node unit 312 and all communication
The communication network formed between node 32 carries out network management, such as increases new communications nodes, deletes existing communication node, modification
Parameter information (including the information such as network ID, device address, frequency point) of communication node etc..It is logical at any one in the present embodiment
After letter node 32 and central node unit 312 are successfully established communication, network management unit 313 then joins the communication node 32
Number configuration, including use when allocating multiple communication channels in advance for the communication node 32 communication；In addition, in communication process
In, entire communication network can also be optimized by network management unit 313, each communication node 32 is distributed in adjustment
Communication channel.
In the present embodiment, the structure of 12 communication nodes 32 is identical, herein only to one of communication node
32 are described in detail, and omit the explanation to other 11 communication nodes 32.
One end of communication node 32 is connected with central node unit 312, the other end and a corresponding sub- control device
22 are connected, and the traffic control signal for sending central node unit 312 is sent in corresponding sub- control device 22.
In the present embodiment, central node unit 312, which neutralizes, is equipped in 12 communication nodes 32 based on WirelessHART communication agreement
The WirelessHART communication module communicated, so that can be based between central node unit 312 and each communication node 32
WirelessHART communication agreement is communicated according to predetermined rule of communication.Here, predetermined rule of communication include frequency hopping communications mechanism and
Time synchronization communication mechanism.
Frequency hopping communications mechanism are as follows:
Between central node unit 312 and arbitrary communication node 32 or between any two communication node 32, into
Assigned multiple communication channels, which are based on, when row communication gradually switches use, as frequency hopping communications mechanism.In this way, ought into
When capable communication is unable to success communication because of channel-failures, used by switching other channels, it can be to avoid communication next time
It is affected because of current channel-failures.
Time synchronization communication mechanism are as follows:
After the traffic control signal that master control device 21 is sent is sent to central node unit 312 via gateway ontology 311,
The traffic control signal is sent to all communication nodes 32 by central node unit 312 in a broadcast manner, so that all
Communication node 32 can receive the traffic control signal simultaneously, to guarantee that all sub- control devices 22 can be based on the friendship
Logical control signal controls corresponding signal lamp group simultaneously and executes corresponding operation.
It is communicated based on the above pre-defined rule, so that the channel radio between communication node 32 and central node unit 312
Believe it is safer, more stable, more rapidly, it is more reliable.
The action and effect of embodiment
The wireless traffic signal light management system according to involved in the present embodiment, the traffic control letter that master control device issues
It number can be sent to communication gate first, communication gate is sent to all communication nodes simultaneously based on time synchronization communication mechanism,
Each communication node is then forwarded to corresponding sub- control device after receiving traffic control signal, to control all traffic letters
Signal lamp is synchronous to execute respective operations；In addition, frequency hopping communications mechanism is used in the communication of communication gate and each communication node,
In this way, even if the channel of present communications is interfered, and communication next time by frequency hopping communications mechanism can select other channels into
Row communication, so that communication next time be avoided equally to be interfered, ensure that traffic control signal, mode safely may be used by wireless communication
It is transmitted by ground.
In the present embodiment, WirelessHART communication module, Er Qietong are equipped in communication gate and all communication nodes
Letter gateway is sent the traffic control signal by way of broadcast when receiving the traffic control signal of master control device sending
To all communication nodes, it ensure that all communication nodes can receive the traffic control signal simultaneously, be further ensured that
All signal lamp group can be controlled simultaneously execution respective operations, and this makes it possible to the traffic lights for meeting any crossing
Operation execute synchronism demand.
Above embodiment is preferred case of the invention, the protection scope being not intended to limit the invention.
Claims (4)
1. a kind of wireless traffic signal light management system, all traffic lights for any one intersection to be arranged into
Row operation management characterized by comprising
For issuing the master control device of traffic control signal；
It is arranged in a one-to-one correspondence the sub- control device of plural number on all Traffic signal posts of the intersection；And
For the signal transmitting apparatus of the progress signal transmission between the master control device and the sub- control device, include:
The communication gate being connected with the master control device, the communication gate that connects one to one are filled with all sub- control
The a plurality of communication nodes set,
Wherein, communication and frequency hopping communications mechanism are based between the communication gate and a plurality of communication nodes
It is communicated with time synchronization communication mechanism.
2. wireless traffic signal light management system according to claim 1, it is characterised in that:
Wherein, the communication gate includes: gateway ontology, central node unit and network management unit,
One end of the gateway ontology is connected with the master control device, and the other end is connected with the central node unit,
It is equipped with WirelessHART communication module in the central node unit and all communication nodes, so that the center
Node unit can be wirelessly communicated with each communication node,
The network management unit is for the communication to forming between the central node unit and all communication nodes
Network carries out network management.
3. wireless traffic signal light management system according to claim 2, it is characterised in that:
It wherein, is that each communication node is assigned with multiple lead to by the network management unit in the communication network
Believe channel,
The frequency hopping communications mechanism are as follows:
Between the central node unit and the arbitrary communication node or between two communication nodes, led to
It is used when letter based on pre-assigned the multiple communication channel switching.
4. wireless traffic signal light management system according to claim 2, it is characterised in that:
Wherein, the time synchronization communication mechanism are as follows:
The central node unit receives the traffic control letter that the master control device is sent from the gateway ontology
After number, which is sent to all communication nodes in a broadcast manner, so that all communication
Node receives the traffic control signal simultaneously, further such that all sub- control devices can control corresponding institute
The signal lamp group stated on Traffic signal post is performed simultaneously respective operations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811560050.XA CN109615884A (en) | 2018-12-20 | 2018-12-20 | Wireless traffic signal light management system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811560050.XA CN109615884A (en) | 2018-12-20 | 2018-12-20 | Wireless traffic signal light management system |
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| CN109615884A true CN109615884A (en) | 2019-04-12 |
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Cited By (2)
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| CN113538930A (en) * | 2020-04-15 | 2021-10-22 | 华为技术有限公司 | Traffic signal control method, related equipment and system |
| CN115662152A (en) * | 2022-09-27 | 2023-01-31 | 哈尔滨理工大学 | Urban traffic management self-adaptive system based on deep learning drive |
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