CN107170248A - Distributed signal control system based on CAN - Google Patents
Distributed signal control system based on CAN Download PDFInfo
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- CN107170248A CN107170248A CN201710313673.6A CN201710313673A CN107170248A CN 107170248 A CN107170248 A CN 107170248A CN 201710313673 A CN201710313673 A CN 201710313673A CN 107170248 A CN107170248 A CN 107170248A
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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
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Abstract
The invention discloses a kind of distributed signal control system based on CAN, including a main control unit and several direction sub-control regions, each direction sub-control region includes a direction sub-control unit and some Signalized control units, Signalized control unit includes several lane signal lamp units and corresponding walker signal lamp unit, main control unit generates crossing signals lights control scheme and is sent to each direction sub-control unit by CAN, each direction sub-control unit is connected by CAN with corresponding Signalized control unit, direction sub-control unit is parsed to belisha beacon control program, analysis result is sent to corresponding Signalized control unit by CAN, Signalized control unit is according to control program control signal lamp state.Communication line of the present invention is simple and reliable, can simplify difficulty of construction and reduce construction cost, raising reliability and simplified follow-up maintenance difficulty, autgmentability is preferable, improve the intelligent level of traffic signal control system.
Description
Technical field
The present invention relates to intelligent transport technology and signal control field, more particularly to a kind of distribution based on CAN
Whistle control system.
Background technology
At present, domestic existing traffic signal controlling machine is essentially all centralized Control, that is to say, that signal controlling machine and letter
All it is to be controlled using 220V voltages between signal lamp, substantial amounts of line is required between each belisha beacon and signal controlling machine
Cable, so either installing, pipeline wiring of constructing is all extremely complex, it is necessary to which substantial amounts of cable, quantities is big, difficulty of construction is high,
Construction influences larger to peripheral facility, and engineering cost is high, and maintenance difficulties are very big, and system reliability is relatively low.
In addition, signal controlling machine uses multi-period fixed cycle mostly at present, part signal control machine uses induction type
Control program.What the multi-period fixed cycle relied primarily on be empirical value and conventional statistics determine crossing phase settings and
Signal timing, it is impossible to realize the intellectuality of road traffic control, traffic efficiency is relatively low；Traffic actuated controller then needs to arrange
The vehicle information data of the real-time detection of crossing all directions enters Mobile state adjustment to belisha beacon phase and signal timing,
The traffic efficiency of road is improved, but each direction is required for the vehicle checker of many to detect information of vehicles and road in this case
Road information, data are all to be sent to signal controlling machine by RS422/RS485, so signal controlling machine needs substantial amounts of RS422/
RS485 interfaces, and due to using centralized control, signal controlling machine is limited due to internal interface, can only be using string
The mode of mouth poll is communicated, and so causes Realtime Capability of Communication and flexibility all poor, and each RS422/RS485 interfaces
One group of connection is required for, therefore is also required to many connections, construction complexity, low reliability, inconvenient debugging, dimension is equally existed
Protect the problems such as difficulty is big.
Current demand signal control machine is essentially all central controlled semaphore, and all data processings are all to need signal control
Owner's control is handled, and the data volume of processing is very big, but because processor resource and limited capacity, can not meet current more next
The requirement of more what's news.Simultaneously after crossing scheme determines that construction is completed, pipeline wiring has just been completed.If rear
Addition detector device is needed in continuous application or needs to increase signal lamp quantity, it will becomes very troublesome, it is necessary to add again
Plus and laying-out, cause scalability very poor.
The content of the invention
The technical problem to be solved in the present invention is that the drawbacks described above for prior art is simple there is provided a kind of communication line
It is single reliable, can simplify difficulty of construction and reduction construction cost, improve reliability and simplified follow-up maintenance difficulty, autgmentability it is preferable,
Improve the distributed signal control system based on CAN of the intelligent level of traffic signal control system.
The technical solution adopted for the present invention to solve the technical problems is：A kind of distributed letter based on CAN of construction
Number control system, including a main control unit and several direction sub-control regions, each direction sub-control region include one
Individual direction sub-control unit and several Signalized control units, each Signalized control unit, which includes several tracks, to be believed
Signal lamp unit and corresponding walker signal lamp unit, the main control unit generates whole crossing signals lights control scheme and timing will
It is respectively transmitted to each direction sub-control unit by one group of CAN, and each direction sub-control unit is by another
Outer one group of CAN is connected with the Signalized control unit in correspondence direction sub-control region, and the direction sub-control unit receives institute
After stating crossing signals lights control scheme and it being parsed, analysis result is sent to correspondence by the another set CAN
Lane signal lamp unit and walker signal lamp unit in the sub-control region of direction, and according to the crossing signals lights control scheme control
The state of signal lamp processed, the Signalized control unit monitors the state of each signal lamp in real time, and by signal lamp state information
Corresponding direction sub-control unit is sent to, the signal lamp state information is sent to the master control list by the direction sub-control unit
Member.
In the distributed signal control system of the present invention based on CAN, each direction sub-control unit
A No. ID uniquely joined with directional correlation is respectively provided with, each the lane signal lamp unit and walker signal lamp unit have
There is unique No. ID.
In the distributed signal control system of the present invention based on CAN, each direction sub-control region
One group of vehicle checker is also included, the vehicle checker is connected with the direction sub-control unit in correspondence direction sub-control region.
In the distributed signal control system of the present invention based on CAN, the main control unit includes first
Power-supply system and the first control system, first power-supply system include the first communication power supply, the first battery, the first electricity
Source modular converter and the first power supply circuit, first communication power supply pass through the first power supply circuit and institute
The connection of the first power transfer module is stated, first battery is connected with first power transfer module；
First control system includes the first master controller, the first human-computer interaction module, the first GPS/GPRS modules, nothing
Line Remote Control Interface, Fisrt fault detection circuit, the first system memory module, the first ethernet communication interface, first monitoring MCU,
First house dog, the first RTC real-time clocks, RS232 interfaces, the first RS422/RS485 interfaces, the first CAN communication interface,
First interface protection circuit, second interface protection circuit and the 3rd interface protection circuit, first human-computer interaction module and institute
State the connection of the first master controller, the setting for realizing crossing signals lights control scheme parameter and state to check, the first GPS
Module/GPRS is connected with first master controller, for realizing gps satellite time service or realization and Platform center or configuration client
End is communicated wirelessly, the wireless remote control interface is connected with first master controller, for by Digiplex to letter
Signal lamp state is controlled, and the Fisrt fault detection circuit is connected with first master controller, for the various events of system
Barrier carries out detecting and carrying out after exception is detected urgent intervention, the first system memory module and first master control in real time
Device connection processed, the storage for realizing system file, journal file record and parameter are preserved, the first ethernet communication interface
It is connected with first master controller, for realizing first master controller and outside progress ethernet communication, described first
Monitoring MCU is connected with first master controller and the first house dog, for as critical operational parameters backup and in fact respectively
Existing outer watchdog function, the first RTC real-time clocks are connected with first master controller, for being provided accurately for system
Temporal information, one end of the RS232 interfaces is connected with first master controller, and the other end of the RS232 interfaces passes through
The first interface protection circuit connects the vehicle checker or external communications equipment, the one of the first RS422/RS485 interfaces
End is connected with first master controller, and the other end of the first RS422/RS485 interfaces is protected by the second interface
Circuit connects the vehicle checker or external communications equipment, one end of the first CAN communication interface and first master control
Device connection processed, the other end of the first CAN communication interface connects the direction by the 3rd interface protection circuit
Sub-control unit, first power transfer module is also connected with first master controller.
In the distributed signal control system of the present invention based on CAN, the direction sub-control unit includes
Second source system and the second control system, the second source system include the second communication power supply, the second battery, the
Two power transfer modules and second source protection circuit, second communication power supply pass through the second source protection circuit
It is connected with the second source modular converter, second battery is connected with the second source modular converter；
Second control system includes the second master controller, the second human-computer interaction module, the 2nd GPS/GPRS modules, the
Two failure detector circuits, second system memory module, the second ethernet communication interface, the second monitoring MCU, the second house dog, the
Two RTC real-time clocks, the 2nd RS422/RS485 interfaces, the second CAN communication interface, the 3rd CAN communication interface,
Four interface protection circuits, the 5th interface protection circuit and the 6th interface protection circuit, second human-computer interaction module with it is described
Second master controller is connected, the setting for realizing crossing signals lights control scheme parameter and state are checked, the 2nd GPS/
GPRS module is connected with second master controller, carried out wirelessly with configuration client for realizing gps satellite time service or realizing
Communication, second failure detector circuit is connected with second master controller, for being examined in real time to the various failures of system
Survey and urgent intervention is carried out after exception is detected, the second system memory module is connected with second master controller, used
Preserved in storage, journal file record and the parameter for realizing system file, the second ethernet communication interface and described second
Master controller is connected, for realizing second master controller and outside progress ethernet communication, and the second monitoring MCU distinguishes
It is connected with second master controller and the second house dog, for backing up and realizing outer watchdog as critical operational parameters
Function, the 2nd RTC real-time clocks are connected with second master controller, for providing precise time information for system, institute
The one end for stating the 2nd RS422/RS485 interfaces is connected with second master controller, the 2nd RS422/RS485 interfaces it is another
One end connects the vehicle checker, one end of the second CAN communication interface and institute by the 4th interface protection circuit
The connection of the second master controller is stated, the other end of the second CAN communication interface is connected by the 5th interface protection circuit
The Signalized control unit is connect, one end of the 3rd CAN communication interface is connected with second master controller, described
The other end of 3rd CAN communication interface connects the main control unit, described second by the 6th interface protection circuit
Power transfer module is also connected with second master controller.
In the distributed signal control system of the present invention based on CAN, the Signalized control unit bag
The 3rd power-supply system, signal lamp control system and signal lamp group display module are included, the 3rd power-supply system includes the 3rd exchange
Power supply, the 3rd battery, the 3rd power transfer module and the 3rd power supply circuit, the 3rd communication power supply lead to
Cross the 3rd power supply circuit to be connected with the 3rd power transfer module, the 3rd battery and the 3rd power supply
Modular converter is connected；
It is real-time that the signal lamp control system includes the 3rd main control MCU, the 3rd monitoring MCU, the 3rd house dog, the 3rd RTC
Clock, the 4th CAN communication interface, the 3rd RS485 interfaces, the 7th interface protection circuit, the 8th interface protection circuit, brightness
Adjust circuit, Signalized control circuit and signal lamp state Acquisition Circuit, the 3rd monitoring MCU and the 3rd main control MCU
Connection, for by the state of the 3rd main control MCU described in heartbeat monitor and back up the 3rd main control MCU operation key join
Number, the 3rd house dog with the described 3rd monitoring MCU be connected, for realize to the described 3rd monitor MCU abnormality detection and
Reset, the 3rd RTC real-time clocks are connected with the 3rd main control MCU, for providing precise time information for system, described
One end of 4th CAN communication interface is connected with the 3rd main control MCU, the 4th CAN communication interface it is another
End is connected with one end of the 7th interface protection circuit, and the other end of the 7th interface protection circuit passes through CAN point
Lian Jie not traffic signals managing main frame and environmental sensor, one end and the 3rd main control MCU company of the 3rd RS485 interfaces
Connect, the other end of the 3rd RS485 interfaces is connected with the 8th interface protection circuit, the brightness regulating circuit respectively with
3rd main control MCU and signal lamp group display module are connected, for realizing to the signal lamp group display module display brightness
Control, the Signalized control circuit is connected, for basis with the 3rd main control MCU and signal lamp group display module respectively
The crossing signals lights control scheme of 3rd main control MCU is realized to the pattern of the signal lamp group display module and showing for color
Show control, the signal lamp state Acquisition Circuit is connected with the 3rd main control MCU and signal lamp group display module, is used for respectively
The dispaly state of the signal lamp group display module is gathered, the signal lamp group display module is controlled according to the belisha beacon
Scheme shows different pattern and arrowhead form, and the 3rd power transfer module is also connected with the signal lamp group display module.
Implement the distributed signal control system based on CAN of the present invention, have the advantages that：Due to provided with
One main control unit and several direction sub-control regions, each direction sub-control region include a direction sub-control unit and some
Individual Signalized control unit, each Signalized control unit includes several lane signal lamp units and corresponding pedestrian signal
Lamp unit, main control unit generates whole crossing signals lights control scheme and it is respectively transmitted to by timing by one group of CAN
Each direction sub-control unit, each direction sub-control unit is by another set CAN and correspondence direction sub-control region
Signalized control unit is connected, after direction sub-control unit receives crossing signals lights control scheme and it is parsed, by analysis result
Lane signal lamp unit and walker signal lamp unit in correspondence direction sub-control region are sent to by another set CAN,
And according to the state of crossing signals lights control scheme control signal lamp, there is each unit independent controller to be controlled,
So different operating can be performed according to functional requirement difference, with high flexibility and data-handling capacity, CAN can
To realize that bus is cascaded, real-time is high, safe and reliable, strong antijamming capability, therefore its communication line is simple and reliable, can simplify and apply
Work difficulty and reduction construction cost, improve reliability and simplify follow-up maintenance difficulty, autgmentability preferably, improve traffic signalization
The intelligent level of system.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation in distributed signal control system one embodiment of the invention based on CAN；
Fig. 2 is the structural representation of main control unit in the embodiment；
Fig. 3 is the structural representation of direction sub-control unit in the embodiment；
Fig. 4 is the structural representation of Signalized control unit in the embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
, should the distribution based on CAN in distributed signal control system embodiment of the present invention based on CAN
The structural representation of whistle control system is as shown in Figure 1.In Fig. 1, being somebody's turn to do the distributed signal control system based on CAN includes
One main control unit 1 and several direction sub-control regions 2, each direction sub-control region 2 correspond to different directions, Mei Gefang respectively
Include a direction sub-control unit 21 and several Signalized control units to sub-control region 2, main control unit 1 is responsible for whole road
The control and management of oral sex messenger scheme, main control unit 1 are adopted with the direction sub-control unit 21 in all directions sub-control region 2
Communicated with one group of CAN, each direction sub-control unit 21 has one uniquely No. ID, it is ensured that each No. ID can
Join with crossing directional correlation, so main control unit 1 can carry out point-to- point communication for each direction sub-control unit 21, while
Broadcast communication can be carried out to all direction sub-control units 21.Specifically, main control unit 1 is responsible for the whole belisha beacon control of generation
Scheme processed, and it is respectively transmitted to by each direction point by one group of CAN according to crossing signals lights control scheme timing
Control unit 21, that is to say, that while it is responsible for the running status of all direction sub-control units 21 of monitoring and Signalized control unit,
And log information, can carry out local log recording in abnormal cases and long-range upper hair is alarmed etc..
In direction sub-control region 2, each direction sub-control unit 21 passes through another set CAN and correspondence direction point
The Signalized control unit connection in region 2 is controlled, each Signalized control unit includes several lane signal lamp units 22
With corresponding walker signal lamp unit 23, it is worth mentioning at this point that, lane signal lamp unit 22 in each Signalized control unit
Number can be one or multiple.Each lane signal lamp unit 22 and walker signal lamp unit 23 are respectively provided with uniquely
No. ID.Direction sub-control unit 21 and each signal lamp point-to- point communication or direction sub-control unit 21 and letter can equally be realized
Signal lamp control unit is broadcasted.
After direction sub-control unit 21 receives the crossing signals lights control scheme of the transmission of main control unit 1 and it is parsed, it will solve
The lane signal lamp unit 22 and pedestrian that analysis result is sent in correspondence direction sub-control region 2 by another set CAN are believed
Signal lamp unit 23, and according to the state of crossing signals lights control scheme control signal lamp, meanwhile, the monitoring of direction sub-control unit 21 is certainly
The running status of body and the state of Signalized control unit, are regularly sent to main control unit 1, Signalized control unit by state
The state of each signal lamp is monitored in real time, and signal lamp state information is sent to corresponding direction sub-control unit 21, direction point
Signal lamp state information is sent to main control unit 1 by control unit 21.
Main control unit 1, direction sub-control unit 21 and Signalized control unit are all as a node, all with corresponding
Data-handling capacity, each node carries out cascade communication by the CAN of setting, the different data of different node processings, very
Just realizing traffic signal control system distributed data processing and control.In addition, CAN has real-time, transmission range
Far, anti-electromagnetic interference capability is strong, low cost and other advantages, is widely used in terms of industrial automation, industrial equipment.This is based on
The distributed signal control system of CAN has simple in construction, all directions is cascaded by CAN, with more
Strong adaptive ability and extended capability, each node have data processing function, and host node is by by the number of each node
According to integration, with reference to advanced control strategy, the intelligent level of traffic signal control system can be greatly improved.
Because the present invention is using the distributed control mode communicated based on CAN, signal controlling machine can not only be provided
Basic function, additionally it is possible to more perfect extension demand is provided, more data access is realized and handles, whole crossing letter is improved
The intelligent level of ship's light control system；Based on distributed control mode, the difficulty that signal lamp is installed, debugged is simplified, reduction
The cost of construction and the cost safeguarded, and then improve the reliability of whole traffic signal control system.Therefore its communication line letter
It is single reliable, can simplify difficulty of construction and reduction construction cost, improve reliability and simplified follow-up maintenance difficulty, autgmentability it is preferable,
Improve the intelligent level of traffic signal control system.
In the present embodiment, each direction sub-control region 2 also includes one group of vehicle checker 24, vehicle checker 24 and correspondence direction point
Direction sub-control unit 21 in control region 2 is connected.
As can be seen here, main control unit 1 is responsible for the determination of crossing signals lights control scheme, at the same main control unit 1 also be responsible for
Exterior arrangement client, Platform center telecommunication, realize the upload download of crossing signals lights control scheme, on journal file
Hair etc. in biography, warning message.Main control unit 1 is communicated by CAN with direction sub-control unit 21, all direction sub-controls
Unit 21 all constitutes a communication network based on CAN by one group of CAN, in this network, main control unit 1 and each
Individual direction sub-control unit 21 can realize point-to- point communication, can also realize between broadcast communication, same direction sub-control unit 21
Also point-to- point communication and broadcast communication can be realized.Crossing signals lights control scheme is issued to all directions point by main control unit 1
Unit 21 is controlled, and timing sends signal command and carries out time synchronized, and direction sub-control unit 21 is again by the crossing signals received
Lights control scheme is parsed according to the direction of oneself, and the scheme information after parsing is issued into Signalized control unit is carried out
Signalized control, Signalized control unit carries out Signalized control after receiving scheme information according to updated plan, until connecing
New scheme information is received, synchronous signal lamp control unit monitors the state of each signal lamp in real time, and state is sent to
Direction sub-control unit 21, direction sub-control unit 21 is sent to main control unit 1 according to the state status of signal lamp.
Fig. 2 is the structural representation of main control unit in the present embodiment, in Fig. 2, and main control unit 1 includes the first power-supply system 11
With the first control system 12, wherein, the first power-supply system 11 includes the first communication power supply 111, the first battery 112, the
One power transfer module 113 and the first power supply circuit 114, the first communication power supply 111 (i.e. 220V alternating currents) pass through
First power supply circuit 114 is connected with the first power transfer module 113, the first battery 112 and the first power transfer module
113 connections.220V alternating currents are converted to first power transfer module 113 into 12V and 5V powers, the first power supply circuit 114
For ensuring that in the case of external lightning and surge equipment will not be damaged.
In the present embodiment, the first control system 12 includes the first master controller 121, the first human-computer interaction module 122, first
GPS/GPRS modules 123, wireless remote control interface 124, Fisrt fault detection circuit 125, the first system memory module 126, first
The monitoring of ethernet communication interface 127, first MCU128, the first house dog 129, the first RTC real-time clocks 130, RS232 interfaces
131st, the first RS422/RS485 interfaces 132, the first CAN communication interface 133, first interface protection circuit 134, second connect
The mouth interface protection circuit 136 of protection circuit 135 and the 3rd, wherein, the first human-computer interaction module 122 and the first master controller 121
Connection, the setting for realizing crossing signals lights control scheme parameter and state check that the first human-computer interaction module 122 includes
LCD display and keyboard, can be checked by the keyboard implementation parameter setting and state of touch or physics.First
GPS module/GPRS module 123 is connected with the first master controller 121, for realizing gps satellite time service or realization and Platform center
Or configuration client is communicated wirelessly, wherein, the first GPS module 123 can realize gps satellite timing function, it is ensured that the time
Reliability, the first GPRS module 123 can be 3G module or 4G modules, can realize with Platform center or configuration client enter
Row wireless telecommunications, realize the functions such as upload, download, log management and the abnormal alarm of long-range crossing signals lights control scheme.
Wireless remote control interface 124 is connected with the first master controller 121, for being entered by Digiplex to signal lamp state
Row control, realizes the manually operated of people's control；Fisrt fault detection circuit 125 is connected, for system with the first master controller 121
Various failures are carried out detecting and carrying out after exception is detected urgent intervention in real time, and the first system memory module 126 and first is led
Controller 121 is connected, the storage for realizing system file, journal file record and parameter preserve etc..First ethernet communication
Interface 127 is connected with the first master controller 121, for realizing the first master controller 121 and outside progress ethernet communication, is passed through
First ethernet communication interface 127 can realize on-site parameters configuration download, the long-distance Log server of crossing signals lights control scheme and
Download etc..
In the present embodiment, the first monitoring MCU128 is connected with the first master controller 121 and the first house dog 129, used respectively
In backing up and realizing outer watchdog function as critical operational parameters, by using the first master controller 121 and the first prison
MCU128 dual processor patterns are controlled, the first master controller 121 uses high-performance, and high reliability processor is responsible for whole crossing letter
The control of signal lamp control program, the function such as the processing of data, the management of interface, the first monitoring MCU128 using one it is highly reliable,
The general processor of performance, it is main to realize the backup for running key parameter to the first master controller 121 in real time, the first master control of monitoring
The running status of device 121 processed, can carry out Rapid reset when detecting the exception of the first master controller 121 and run key
Parameter reconstruction, realizes thermal starting function, while so ensuring that the first master controller 121 is controlled, the first monitoring
MCU128 carries out system status monitoring, backs up and realize outer watchdog function as critical operational parameters.When first RTC is real-time
Clock 130 is connected with the first master controller 121, for providing precise time information for system, is ensured with reference to the first GPS module 123
The clock of system is accurate.The data of the processing of main control unit 1 are mainly the data of the direction sub-control unit 21 come by CAN
And other expansion equipment data of outside come by the first RS422/RS485 interfaces 132.
In the present embodiment, one end of RS232 interfaces 131 is connected with the first master controller 121, RS232 interfaces 131 it is another
End connects vehicle checker 24 or external communications equipment by first interface protection circuit 134, and RS232 interfaces 131 can scene progress
Configuration and program update, or are updated with configuring progress configuration and program after client is connected, while can also be connect by RS232
Mouth 131 is communicated with external module.One end of first RS422/RS485 interfaces 132 is connected with the first master controller 121, the
The other end of one RS422/RS485 interfaces 132 connects vehicle checker 24 by second interface protection circuit 135 or external communication is set
Standby, the first RS422/RS485 interfaces 132 are realized to be communicated with vehicle checker 24 or outside logical communication apparatus, is set according to outside
Standby communication interface situation can select to realize full duplex communication using the first RS422 interfaces 132, or be connect by the first RS485
Mouth 132 realizes half duplex communication.
In the present embodiment, one end of the first CAN communication interface 133 is connected with the first master controller 121, the first CAN
The other end of bus communication interface 133 passes through the closure sub-control unit 21 of the 3rd interface protection circuit 136, the first CAN
Communication interface 133 provides up to 5 tunnel CANs and communicated with outside direction sub-control unit 21, external signal control unit,
Difference in functionality uses different groups of CANs so that communication interference is preferably minimized.Above-mentioned first interface protection circuit 134, second connect
Mouth protection circuit 135 and the 3rd interface protection circuit 136 effectively rejecting external thunder and lightning, surge, electrostatic etc. can influence, it is ensured that be
System in the presence of a harsh environment run by normal reliable.Main control unit 1 uses low power dissipation design, with reference to built-in first battery 112, can be with
Realize when outside 220V AC powers are abnormal, be directly switch to the first built-in battery 112 and power, it is ensured that system is still just
Often operation, it is ensured that crossing pass through order, recovers 220V AC powers and powers to realize to the first battery 112 automatically afterwards in maintenance
Charging.Above-mentioned first power transfer module 113 is also connected with the first master controller 12, for being powered to the first master controller 12.
In the present embodiment, the sub-control unit of direction sub-control unit 21 is divided into first order direction sub-control unit, second level direction point
Control unit ..., n-th grade of direction sub-control unit, specifically be classified depending on the Demand Design of crossing, first order direction sub-control unit is negative
Blame the control of all directions belisha beacon state.The superior and the subordinate of direction sub-control unit 21 are cascaded by another set CAN,
It is also simultaneously to be communicated by CAN between direction sub-control unit 21 and same level Signalized control unit, is receiving
After the crossing traffic signaling plan of upper level, crossing traffic signaling plan can be sent to same level signal lamp control as needed
Unit processed and next rank direction sub-control unit；Direction sub-control unit 21 is also responsible for access when front direction sub-control region 2 simultaneously
The data of vehicle checker 24, and data are handled accordingly.
Fig. 3 is the structural representation of direction sub-control unit in the present embodiment, in Fig. 3, and direction sub-control unit 21 includes second
The control system 212 of power-supply system 211 and second, second source system 211 includes the second communication power supply 213, the second electric power storage
Pond 214, second source modular converter 215 and second source protection circuit 216, the second communication power supply 213 pass through the second electricity
Source protection circuit 216 is connected with second source modular converter 215, and the second battery 214 connects with second source modular converter 215
Connect.Second source system 211 is 220V AC powers, and second source modular converter 215 is used to be converted to 220V AC powers
12V and 5V power, and second source protection circuit 216 ensures that in the case of external lightning and surge equipment will not be damaged.
In the present embodiment, the second control system 212 includes the second master controller 221, the second human-computer interaction module 222, the
Two GPS/GPRS modules 223, the second failure detector circuit 224, second system memory module 225, the second ethernet communication interface
226th, the second monitoring MCU227, the second house dog 228, the 2nd RTC real-time clocks 229, the 2nd RS422/RS485 interfaces 230, the
Two CAN communication interfaces 231, the 3rd CAN communication interface 232, the 4th interface protection circuit 233, the 5th interference prevention
The interface protection circuit 235 of circuit 234 and the 6th.
Wherein, the second human-computer interaction module 222 is connected with the second master controller 221, for realizing belisha beacon control
The setting of strategy parameter and state check that the second human-computer interaction module 222 includes LCD display and keyboard, can be by touching
Or the keyboard of physics realizes that the parameter setting and state of crossing traffic signaling plan are checked, the 2nd GPS/GPRS modules 223 with
Second master controller 221 is connected, for realizing gps satellite time service, it is ensured that the reliability of time, or is realized and configuration client
Communicate wirelessly.Second failure detector circuit 224 is connected with the second master controller 221, for being carried out to the various failures of system
Detect in real time and urgent intervention is carried out after exception is detected, second system memory module 225 connects with the second master controller 221
Connect, the storage for realizing system file, journal file record and parameter are preserved etc., the second ethernet communication interface 226 and the
Two master controllers 221 are connected, for realizing the second master controller 221 and outside progress ethernet communication, pass through ethernet communication
Interface 226 can realize that on-site parameters configuration is downloaded, the long-distance Log server of crossing traffic signaling plan and download, journal file are uploaded
Deng.
In the present embodiment, the second monitoring MCU227 is connected with the second master controller 221 and the second house dog 228 respectively, is led to
Cross the dual processor pattern that the second master controller 221 and the second monitoring MCU227 are set, it is ensured that the second master controller 221 is controlled
While processed, the second monitoring MCU227 carries out system status monitoring, outside for backing up and realizing as critical operational parameters
Watchdog function.Second master controller 221 uses high-performance, and highly reliable processor is responsible for whole crossing signals lights control scheme
Control, the function such as the processing of data, the management of interface, the second monitoring MCU227 is then using one highly reliable, performance is typically located
Manage device, the main backup for realizing operation key parameter in real time to the second master controller 221, the second master controller of monitoring
221 running status, detect the second master controller 221 it is abnormal when can carry out Rapid reset and by critical operational parameters
Recover, realize thermal starting function.
Direction sub-control unit 21 also passes through another set in addition to being communicated by one group of CAN and main control unit 1
CAN and Signalized control unit communications, then communicated by the 2nd RS422/RS485 interfaces 230 and vehicle checker 24, connect in real time
Receive information of vehicle flowrate and track status information that outside vehicle checker 24 sends over etc., to the data processing of vehicle checker 24 it
Afterwards, judge it is directly to Signalized control or to send the result to main control unit 1 according to the strategy of design, via main control unit
Signalized control is carried out after 1 processing.
In the present embodiment, the 2nd RTC real-time clocks 229 are connected with the second master controller 221, for being provided accurately for system
Temporal information, ensures that the time of system is accurate with reference to the second GPS module 223.One end of 2nd RS422/RS485 interfaces 230 with
Second master controller 221 is connected, and the other end of the 2nd RS422/RS485 interfaces 230 is connected by the 4th interface protection circuit 233
Vehicle checker 24, the 2nd RS422/RS485 interfaces 230 are realized and communicated with vehicle checker 24 or external communications equipment, according to outside
The communication interface situation of communication apparatus can select to realize full duplex communication or by second using the 2nd RS422 interfaces 230
RS485 interfaces 230 realize half duplex communication.
One end of second CAN communication interface 231 is connected with the second master controller 221, the second CAN communication interface
231 other end connects Signalized control unit by the 5th interface protection circuit 234, the 3rd CAN communication interface 232
One end is connected with the second master controller 221, and the other end of the 3rd CAN communication interface 232 passes through the 6th interface protection circuit
235 connection main control units 1, second source modular converter 215 is also connected with the second master controller 221.The communication of second CAN connects
The CAN communication interface 232 of mouth 231 and the 3rd provides up to 5 tunnel CANs and outside direction sub-control unit 21, outside letter
Number control unit is communicated, and difference in functionality uses different groups of CANs so that communication interference is preferably minimized.4th interface is prevented
Protection circuit 233, the 4th interface protection circuit 234 and the 5th interface protection circuit 235 can effectively rejecting external thunder and lightning, surge,
Electrostatic etc. influences, it is ensured that system in the presence of a harsh environment run by normal reliable.Second control system 212 uses low power dissipation design, knot
Close built-in second battery 214, it is possible to achieve when outside 220V AC powers are abnormal, be directly switch to the second built-in electric power storage
Pond 214 is powered, it is ensured that system is still normally run, it is ensured that crossing is passed through order, is recovered 220V AC powers in maintenance and is powered it
Realize charging to the second battery 214 automatically afterwards.
Signalized control unit is responsible for receiving the control program that direction sub-control unit 21 is issued, according to control program to signal
The conscientious control of lamp, while upper send out signal lamp state corresponding to corresponding sub-control, and realizes abnormal scheme control.Signal lamp list
The built-in backup battery of first each signal lamp group, realizes the short time without signal lamp normal work in the case of externally fed.
Fig. 4 is the structural representation of Signalized control unit in the present embodiment, and in Fig. 4, the Signalized control unit includes
3rd power-supply system 31, signal lamp control system 32 and signal lamp group display module 33, wherein, the 3rd power-supply system 31 includes the
Three communication power supplies 311, the 3rd battery 312, the 3rd power transfer module 313 and the 3rd power supply circuit 314, its
In, the 3rd communication power supply 311 is connected by the 3rd power supply circuit 314 with the 3rd power transfer module 313, and the 3rd stores
Battery 312 is connected with the 3rd power transfer module 313.3rd communication power supply 311 is outside 220V AC powers, and the 3rd stores
Battery 312 is 12V DC batteries, and the 3rd power supply circuit 314 is first passed around after the access of the 3rd communication power supply 311
Suppress outside surging signal, then 12V DC and 5V DC are produced via the 3rd internal power transfer module 313, while also can
Enough that 3rd battery 312 is charged, 12V DC and 5V DC are for Signalized control unit and signal lamp group display module 33
It is powered.3rd power-supply system 31 also has 220V AC-OK signal detections, and whether detection Alternating Current Power Supply is normal in real time, and
And output state is to Signalized control unit；The 3rd battery can also be quickly switched into after outside 220V power-off simultaneously
312 power supplies.In addition, the output voltage of the 3rd battery 312 can also be gathered by Signalized control unit.
Signal lamp control system includes the 3rd main control MCU the 321, the 3rd monitoring MCU322, the 3rd house dog 323, the 3rd RTC
Real-time clock 324, the 4th CAN communication interface 325, the 3rd RS485 interfaces 327, the 7th interface protection circuit the 326, the 8th
Interface protection circuit 328, brightness regulating circuit 329, Signalized control circuit 330 and signal lamp state Acquisition Circuit 331, its
In, the 3rd main control MCU 321 is used to realize and external communication, completes communication and control logic is realized, realization is shown to signal lamp group
The control of module 33 and the state of collection signal lamp group display module 33, realize and are interacted between the 3rd monitoring MCU322.
3rd monitoring MCU322 is connected with the 3rd main control MCU 321, for the shape by the main control MCU 321 of heartbeat monitor the 3rd
State and the operation key parameter for backing up the 3rd main control MCU 321, can be in time to the when the 3rd main control MCU 321 occurs abnormal
Three main control MCUs 321 carry out hardware reset, and the 3rd main control MCU 321 reduces key parameter after starting.3rd house dog 323 with
3rd monitors MCU322 connections, for realizing abnormality detection and reset to the 3rd monitoring MCU322, the 3rd RTC real-time clocks
324 are connected with the 3rd main control MCU 321, for providing precise time information for system, can carry out the reading and design of time,
One end of 4th CAN communication interface 325 is connected with the 3rd main control MCU 321, the 4th CAN communication interface 325 it is another
End is connected with one end of the 7th interface protection circuit 326, and the other end of the 7th interface protection circuit 326 is distinguished by CAN
Traffic signals managing main frame and environmental sensor are connected, the 4th CAN communication interface 325 is interacted by CAN physical layer, realized
Signalized control unit is communicated with outside CAN equipment.
In the present embodiment, one end of the 3rd RS485 interfaces 327 is connected with the 3rd main control MCU 321, the 3rd RS485 interfaces
327 other end is connected with the 8th interface protection circuit 328, and the 3rd RS485 interfaces 327 are realized and outside RS485 external equipments
It is controlled, realization is interacted with external equipment, brightness regulating circuit 329 is aobvious with the 3rd main control MCU 321 and signal lamp group respectively
Show that module 33 is connected, for realizing the control to the display brightness of signal lamp group display module 33, Signalized control circuit 330 is distinguished
It is connected, for the belisha beacon control according to the 3rd main control MCU 321 with the 3rd main control MCU 321 and signal lamp group display module 33
Scheme processed realizes the pattern and the display control of color to signal lamp group display module 33,331 points of signal lamp state Acquisition Circuit
Be not connected with the 3rd main control MCU 321 and signal lamp group display module 33, the display shape for gathering signal lamp group display module 33
State, signal lamp group display module 33 shows different pattern and arrowhead form according to crossing signals lights control scheme, comprising it is red, yellow,
Green three kinds of colors etc.；3rd power transfer module 313 is also connected with signal lamp group display module 33.3rd main control MCU 321 can
The correlation behavior of 3rd power-supply system 31 is acquired, including AC-OK signals, the voltage condition of the 3rd battery 312 etc., realize
Monitoring to power supply status.
In a word, the present invention can be effectively improved the one of Current traffic signal controller presence by CAN communication modes
A little problems, can effectively improve communication reliability, reduction difficulty of construction, save construction cost, reduce fault rate, reduction
Maintenance difficulties and cost；The present invention greatly improves the data-handling capacity of whole control system, while also improving control system
Scalability, meets functional requirement under different condition, and different resume module related datas are respectively adopted in realization, improve signal lamp
The intelligent level of control；It can be realized in the case of outside abnormity of power supply by the battery built in each unit, crossing energy
It is enough to keep normal operation, it is ensured that crossing normal pass order can not be influenceed under maintenance and maintenance condition.In hardware and software
The multiple reliability design of both sides, is greatly improved the reliability of whole signal lamp.
The external interface of the present invention enriches, and the data of outside a large amount of grade sensors of vehicle checker 24 can be gathered, by effective
Data processing algorithm obtain accurate road information data, it is theoretical with reference to advanced traffic signalization so that traffic signals
Control system has more preferable adaptive ability and the integral device coordination ability, improves the intelligence of whole traffic signal control system
Change level.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God is with principle, and any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (6)
1. a kind of distributed signal control system based on CAN, it is characterised in that including a main control unit and several
Direction sub-control region, each direction sub-control region includes a direction sub-control unit and several Signalized control lists
Member, each Signalized control unit includes several lane signal lamp units and corresponding walker signal lamp unit, institute
Main control unit is stated to generate whole crossing signals lights control scheme and it regularly is respectively transmitted into each institute by one group of CAN
Direction sub-control unit is stated, each direction sub-control unit is by another set CAN and correspondence direction sub-control region
Signalized control unit connection, after the direction sub-control unit receives the crossing signals lights control scheme and it is parsed,
Analysis result is sent to lane signal lamp unit and row in correspondence direction sub-control region by the another set CAN
People's signal lamp unit, and according to the state of the crossing signals lights control scheme control signal lamp, the Signalized control unit
The state of each signal lamp is monitored in real time, and signal lamp state information is sent to corresponding direction sub-control unit, the direction
The signal lamp state information is sent to the main control unit by sub-control unit.
2. the distributed signal control system according to claim 1 based on CAN, it is characterised in that each described
Direction sub-control unit is respectively provided with a No. ID uniquely joined with directional correlation, each lane signal lamp unit and pedestrian's letter
Signal lamp unit is respectively provided with unique No. ID.
3. the distributed signal control system according to claim 1 or 2 based on CAN, it is characterised in that Mei Gesuo
State direction sub-control region and also include one group of vehicle checker, the vehicle checker and the direction sub-control unit in correspondence direction sub-control region
Connection.
4. the distributed signal control system according to claim 3 based on CAN, it is characterised in that the master control
Unit includes the first power-supply system and the first control system, and first power-supply system includes the first communication power supply, first
Battery, the first power transfer module and the first power supply circuit, first communication power supply pass through the described first electricity
Source protection circuit is connected with first power transfer module, and first battery connects with first power transfer module
Connect；
First control system includes the first master controller, the first human-computer interaction module, the first GPS/GPRS modules, wireless remote
Control interface, Fisrt fault detection circuit, the first system memory module, the first ethernet communication interface, the first monitoring MCU, first
House dog, the first RTC real-time clocks, RS232 interfaces, the first RS422/RS485 interfaces, the first CAN communication interface, first
Interface protection circuit, second interface protection circuit and the 3rd interface protection circuit, first human-computer interaction module and described the
One master controller is connected, the setting for realizing crossing signals lights control scheme parameter and state are checked, the first GPS moulds
Block/GPRS is connected with first master controller, for realizing gps satellite time service or realization and Platform center or configuration client
Communicate wirelessly, the wireless remote control interface is connected with first master controller, for by Digiplex to signal
Lamp state is controlled, and the Fisrt fault detection circuit is connected with first master controller, for the various failures of system
Carry out detecting and carrying out after exception is detected urgent intervention, the first system memory module and first main control in real time
Device connection, the storage for realizing system file, journal file record and parameter preserve, the first ethernet communication interface with
First master controller is connected, for realizing first master controller and outside progress ethernet communication, first prison
Control MCU is connected with first master controller and the first house dog, for backing up and realizing as critical operational parameters respectively
Outer watchdog function, the first RTC real-time clocks are connected with first master controller, for providing accurate for system when
Between information, one end of the RS232 interfaces is connected with first master controller, and the other end of the RS232 interfaces passes through institute
State first interface protection circuit and connect the vehicle checker or external communications equipment, one end of the first RS422/RS485 interfaces
It is connected with first master controller, the other end of the first RS422/RS485 interfaces protects electricity by the second interface
Road connects the vehicle checker or external communications equipment, one end of the first CAN communication interface and first main control
Device is connected, and the other end of the first CAN communication interface connects the direction point by the 3rd interface protection circuit
Unit is controlled, first power transfer module is also connected with first master controller.
5. the distributed signal control system according to claim 4 based on CAN, it is characterised in that the direction
Sub-control unit include second source system and the second control system, the second source system include the second communication power supply,
Second battery, second source modular converter and second source protection circuit, second communication power supply pass through described
Two power supply circuits are connected with the second source modular converter, second battery and the second source modular converter
Connection；
Second control system includes the second master controller, the second human-computer interaction module, the 2nd GPS/GPRS modules, the second event
Barrier detection circuit, second system memory module, the second ethernet communication interface, the second monitoring MCU, the second house dog, the 2nd RTC
Real-time clock, the 2nd RS422/RS485 interfaces, the second CAN communication interface, the 3rd CAN communication interface, the 4th interface
Protection circuit, the 5th interface protection circuit and the 6th interface protection circuit, second human-computer interaction module and the described second master
Controller is connected, the setting for realizing crossing signals lights control scheme parameter and state are checked, the 2nd GPS/GPRS moulds
Block is connected with second master controller, communicated wirelessly for realizing gps satellite time service or realizing with configuration client, institute
The second failure detector circuit is stated to be connected with second master controller, for carrying out the various failures of system detection in real time and in inspection
Measure and urgent intervention is carried out after exception, the second system memory module is connected with second master controller, for realizing system
Storage, journal file record and the parameter of system file are preserved, the second ethernet communication interface and second master controller
Connection, for realizing second master controller with outside carry out ethernet communication, the second monitoring MCU is respectively with described the
Two master controllers and the second house dog connect, for backing up and realizing outer watchdog function, institute as critical operational parameters
The 2nd RTC real-time clocks are stated to be connected with second master controller, for providing precise time information, described second for system
One end of RS422/RS485 interfaces is connected with second master controller, and the other end of the 2nd RS422/RS485 interfaces leads to
Cross the 4th interface protection circuit and connect the vehicle checker, one end of the second CAN communication interface and described second
Master controller is connected, and the other end of the second CAN communication interface connects described by the 5th interface protection circuit
Signalized control unit, one end of the 3rd CAN communication interface is connected with second master controller, and the described 3rd
The other end of CAN communication interface connects the main control unit, the second source by the 6th interface protection circuit
Modular converter is also connected with second master controller.
6. the distributed signal control system according to claim 5 based on CAN, it is characterised in that the signal
Lamp control unit includes the 3rd power-supply system, signal lamp control system and signal lamp group display module, the 3rd power-supply system
Handed over including the 3rd communication power supply, the 3rd battery, the 3rd power transfer module and the 3rd power supply circuit, the described 3rd
Stream power supply be connected by the 3rd power supply circuit with the 3rd power transfer module, the 3rd battery and
The 3rd power transfer module connection；
The signal lamp control system include the 3rd main control MCU, the 3rd monitoring MCU, the 3rd house dog, the 3rd RTC real-time clocks,
4th CAN communication interface, the 3rd RS485 interfaces, the 7th interface protection circuit, the 8th interface protection circuit, brightness regulation
Circuit, Signalized control circuit and signal lamp state Acquisition Circuit, it is described 3rd monitoring MCU be connected with the 3rd main control MCU,
It is described for by the state of the 3rd main control MCU described in heartbeat monitor and backing up the operation key parameter of the 3rd main control MCU
3rd house dog is connected with the described 3rd monitoring MCU, for realizing abnormality detection and reset to the described 3rd monitoring MCU, institute
The 3rd RTC real-time clocks are stated to be connected with the 3rd main control MCU, for providing precise time information, the 4th CAN for system
One end of bus communication interface is connected with the 3rd main control MCU, the other end of the 4th CAN communication interface with it is described
One end connection of 7th interface protection circuit, the other end of the 7th interface protection circuit connects friendship by CAN respectively
Messenger managing main frame and environmental sensor, one end of the 3rd RS485 interfaces are connected with the 3rd main control MCU, described
The other end of 3rd RS485 interfaces is connected with the 8th interface protection circuit, and the brightness regulating circuit is respectively with described
Three main control MCUs and signal lamp group display module are connected, for realizing the control to the signal lamp group display module display brightness,
The Signalized control circuit is connected with the 3rd main control MCU and signal lamp group display module, for according to described respectively
The crossing signals lights control scheme of three main control MCUs realizes the pattern and the display control of color to the signal lamp group display module
System, the signal lamp state Acquisition Circuit is connected, for gathering with the 3rd main control MCU and signal lamp group display module respectively
The dispaly state of the signal lamp group display module, the signal lamp group display module is according to the crossing signals lights control scheme
Different pattern and arrowhead form are shown, the 3rd power transfer module is also connected with the signal lamp group display module.
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|---|---|---|---|
| CN201710313673.6A CN107170248A (en) | 2017-05-05 | 2017-05-05 | Distributed signal control system based on CAN |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710313673.6A CN107170248A (en) | 2017-05-05 | 2017-05-05 | Distributed signal control system based on CAN |
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| CN108183835A (en) * | 2017-12-08 | 2018-06-19 | 中国航空工业集团公司成都飞机设计研究所 | A kind of military 1394 bus data integrality monitoring method of distributed system |
| CN108508820A (en) * | 2018-06-29 | 2018-09-07 | 浙江恒强科技股份有限公司 | Networking control system of the straight-bar machines band from race formula yarn mouth |
| CN109035810A (en) * | 2018-08-09 | 2018-12-18 | 昆明理工大学 | A kind of semaphore with clock synchronizing function |
| CN109661087A (en) * | 2019-01-23 | 2019-04-19 | 北京易华录信息技术股份有限公司 | Control method, device, storage medium and the central controller of traffic controller |
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| CN108183835B (en) * | 2017-12-08 | 2021-05-07 | 中国航空工业集团公司成都飞机设计研究所 | Military 1394 bus data integrity monitoring method for distributed system |
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| CN109661087A (en) * | 2019-01-23 | 2019-04-19 | 北京易华录信息技术股份有限公司 | Control method, device, storage medium and the central controller of traffic controller |
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| CN109799756B (en) * | 2019-01-28 | 2024-04-16 | 上海太易检测技术有限公司 | Cascade weight sorting system with time delay measurement structure |
| CN110045698A (en) * | 2019-04-11 | 2019-07-23 | 重庆川仪控制***有限公司 | A kind of controller based on DCS control system |
| CN112116819A (en) * | 2019-06-04 | 2020-12-22 | 云南金隆伟业电子有限公司 | Wireless networking traffic signal lamp controller |
| CN112616129B (en) * | 2020-12-30 | 2022-06-21 | 国创移动能源创新中心(江苏)有限公司 | Wireless communication system and communication method for control equipment and PDU trolley |
| CN112616129A (en) * | 2020-12-30 | 2021-04-06 | 国创新能源汽车智慧能源装备创新中心(江苏)有限公司 | Wireless communication system and communication method for control equipment and PDU trolley |
| CN114326368A (en) * | 2021-12-16 | 2022-04-12 | 三一汽车制造有限公司 | Pump truck control method and system and pump truck |
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| CN114826315A (en) * | 2022-03-21 | 2022-07-29 | 深圳市三旺通信股份有限公司 | Remote transmission method, device, equipment and medium for CAN optical modem equipment |
| CN114826315B (en) * | 2022-03-21 | 2023-11-28 | 深圳市三旺通信股份有限公司 | Remote transmission method, device, equipment and medium of CAN (controller area network) optical cat equipment |
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