CN108639107A - Ground network monitoring system for train ranging - Google Patents
Ground network monitoring system for train ranging Download PDFInfo
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- CN108639107A CN108639107A CN201810431786.0A CN201810431786A CN108639107A CN 108639107 A CN108639107 A CN 108639107A CN 201810431786 A CN201810431786 A CN 201810431786A CN 108639107 A CN108639107 A CN 108639107A
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- ground
- train
- distance measurement
- based server
- fixing end
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 52
- 238000005259 measurement Methods 0.000 claims abstract description 33
- 238000004891 communication Methods 0.000 claims abstract description 20
- 210000003516 pericardium Anatomy 0.000 claims 1
- 238000009434 installation Methods 0.000 description 6
- 238000007726 management method Methods 0.000 description 6
- 238000009826 distribution Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L23/00—Control, warning or like safety means along the route or between vehicles or trains
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
- B61L25/02—Indicating or recording positions or identities of vehicles or trains
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
- H04L67/025—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The present invention proposes a kind of ground network monitoring system for train ranging, including：Ground fixing end, train mobile terminal, ground-based server, monitoring center and microcomputer interlock system, wherein, the ground fixing end and train mobile terminal, it is both provided with host and UWB rangings and communication module, ground fixing end is connect with the train mobile terminal, so that being communicated between the two, and ranging is carried out to train；The train mobile terminal, for sending distance measurement request and show ranging data, and output distance measurement result；The ground fixing end is exported for receiving the distance measurement request and distance measurement result, and by the distance measurement result to the ground-based server；The microcomputer interlock system, for monitoring simultaneously output track line status and track switch open and-shut mode information；The ground-based server is connect with the ground fixing end and microcomputer interlock system respectively, and the ground-based server is for receiving the distance measurement result, track circuit status information and track switch open and-shut mode information.
Description
Technical field
The present invention relates to monitoring system technical fields, are supervised in particular to a kind of ground network for train ranging
Control system.
Background technology
Currently, when train carries out ranging and positioning operation, need to be monitored ranging operation by monitoring system,
It is safeguarded, and train can be monitored dynamically and remote management in time by the data needed for monitoring system ranging, to carry
The accuracy of high ranging, that is, positioning operation result.
Invention content
In consideration of it, the present invention proposes a kind of ground network monitoring system for train ranging, it is intended to solve to improve row
The working efficiency of vehicle ranging monitoring system, and then the problem of raising train operation efficiency.
On one side, the present invention proposes a kind of ground network monitoring system for train ranging, including：Ground is fixed
End, train mobile terminal, ground-based server, monitoring center and microcomputer interlock system, wherein the ground fixing end and train movement
End, is both provided with host and UWB rangings and communication module, and the ground fixing end is connect with the train mobile terminal, so that
It is communicated between the two, and ranging is carried out to train；The train mobile terminal, for sending distance measurement request and showing ranging number
According to, and output distance measurement result；The ground fixing end, for receiving the distance measurement request and distance measurement result, and by the survey
It is exported to the ground-based server away from result；The microcomputer interlock system, for monitoring simultaneously output track line status and track switch
Open and-shut mode information；The ground-based server is connect with the ground fixing end and microcomputer interlock system respectively, the ground clothes
Business device exports that treated surveys for receiving the distance measurement result, track circuit status information and track switch open and-shut mode information
Away from result, track circuit status information and track switch open and-shut mode information；The monitoring center is connect with the ground-based server, institute
Monitoring center is stated for distance measurement result, track circuit status information and track switch open and-shut mode to be believed according to treated described in reception
Breath, remotely monitor the train mobile terminal, ground fixing end and ground-based server operating status, and monitoring track circuit shape
State and track switch open and-shut mode.
Further, the monitoring center includes control unit, and described control unit is used to be exported according to monitoring result and control
Administration order processed, to be carried out to the train, ground fixing end, ground-based server, microcomputer interlock system, track switch and track circuit
Control and management.
Further, the train mobile terminal is connect with the microcomputer interlock system, and the train mobile terminal is for receiving
The track circuit status information and track switch open and-shut mode information, and by the track circuit status information and track switch open and-shut mode
Information is exported to the ground-based server.
Compared with prior art, beneficial effects of the present invention are：By the way that ground fixing end, train mobile terminal and microcomputer is arranged
Interlock system is acquired data, and ground-based server carries out data processing and distribution, and monitoring center carries out same monitoring and right
Each equipment is managed and controls, and greatly improves the operational efficiency of monitoring system.Meanwhile by ground fixing end, row
UWB rangings are set on vehicle mobile terminal and communication module further increases monitoring center and adopt to carry out being accurately positioned for train
The accuracy of the data of collection has ensured safety when train operation to significantly improve the security performance of monitoring system.
Description of the drawings
By reading the detailed description of hereafter preferred embodiment, various other advantages and benefit are common for this field
Technical staff will become clear.Attached drawing only for the purpose of illustrating preferred embodiments, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings：
Fig. 1 is the structural schematic diagram of the ground network monitoring system provided in an embodiment of the present invention for train ranging.
Specific implementation mode
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
Completely it is communicated to those skilled in the art.It should be noted that in the absence of conflict, embodiment in the present invention and
Feature in embodiment can be combined with each other.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
As shown in fig.1, it is the knot of the ground network monitoring system provided in an embodiment of the present invention for train ranging
Structure schematic diagram.The embodiment of the present invention proposes a kind of ground network monitoring system for train ranging, including：Ground is fixed
End, train mobile terminal, ground-based server, monitoring center and microcomputer interlock system, wherein the ground fixing end and train movement
End, is both provided with host and UWB rangings and communication module, and the ground fixing end is connect with the train mobile terminal, so that
It is communicated between the two, and ranging is carried out to train；The train mobile terminal, for sending distance measurement request and showing ranging number
According to, and output distance measurement result；The ground fixing end, for receiving the distance measurement request and distance measurement result, and by the survey
It is exported to the ground-based server away from result；The microcomputer interlock system, for monitoring simultaneously output track line status and track switch
Open and-shut mode information；The ground-based server is connect with the ground fixing end and microcomputer interlock system respectively, the ground clothes
Business device exports that treated surveys for receiving the distance measurement result, track circuit status information and track switch open and-shut mode information
Away from result, track circuit status information and track switch open and-shut mode information；The monitoring center is connect with the ground-based server, institute
Monitoring center is stated for distance measurement result, track circuit status information and track switch open and-shut mode to be believed according to treated described in reception
Breath, remotely monitor the train mobile terminal, ground fixing end and ground-based server operating status, and monitoring track circuit shape
State and track switch open and-shut mode.
Further, the monitoring center includes control unit, and described control unit is used to be exported according to monitoring result and control
Administration order processed, to be carried out to the train, ground fixing end, ground-based server, microcomputer interlock system, track switch and track circuit
Control and management.
Further, the train mobile terminal is connect with the microcomputer interlock system, and the train mobile terminal is for receiving
The track circuit status information and track switch open and-shut mode information, and by the track circuit status information and track switch open and-shut mode
Information is exported to the ground-based server.
It is understood that data are acquired by the way that ground fixing end, train mobile terminal and microcomputer interlock system is arranged,
Ground-based server carries out data processing and distribution, and monitoring center carries out same monitoring, and each equipment is managed and is controlled,
Greatly improve the operational efficiency of monitoring system.Meanwhile by the way that UWB rangings are arranged on ground fixing end, train mobile terminal
The accuracy of the data of monitoring center acquisition is further increased to carry out being accurately positioned for train with communication module, to
The security performance for significantly improving monitoring system has ensured safety when train operation.
Another realization method based on above-described embodiment provides a kind of based on ultra wide band in the present embodiment
(UWB) range-measurement system of wireless communication technique.Specifically, range-measurement system using unique wireless pulses radiofrequency signal mechanism into
The two-way flight time ranging of row and communication, by the ranging quality monitoring mechanism detection device signed based on direct sampled signal it
Between ranging path on whether there is blocking, equipment built-in transceiver to can be used for collision avoidance, real time location tracking and key and set
Protection etc. is applied, running tracking, navigator fix, intelligent monitoring etc. for subway train provides real-time range and sensing data.System
Positioning and sensor communication capacity are directly integrated into together, by customed ranging protocol, supporting interface can be with other prisons
It surveys or control device is connected.Range-measurement system has communication function, can carry out targetedly two-way flight between devices
Time ranging, and it is carried out at the same time mutual liaison, ensure that the accuracy of distance measurement result, distance measurement result can be directly used for
Calculate the relative position between distance-measuring equipment.
Specifically, positioning system is additionally provided in present embodiment, by using unique wireless pulses radiofrequency signal
Mechanism carries out point-to-point two-way flight time ranging and communication, and train and rail track stationary nodes in range can surveyed by obtaining
Distance, the automatic exact position for judging train on railway line road, passes through high-precision railroad track electronic map and train operation
The accurate skill and Algorithm mapping of track, realize subway train be accurately positioned and safety navigation.
Specifically, positioning system is a set of subway train security protection based on " vehicle vehicle " communication and operational monitoring system
System increases node device in the crucial fixed point of track circuit, and accurate track circuit milepost built in stationary nodes forms row
The standard for manual sampling of vehicle shift position and fixed position ranging ensures that " point is fixed for high-precision of any time train on railway line road
Position ".
Specifically, the safe operation on schedule of subway train is related to safety of comforming, it is an advanced prosperity in city
Mark.And the operation management of subway is an extremely complex system engineering, the normal operation of train all has one behind
The support of huge signal network.Present embodiment additionally provides a kind of subway train remotely intelligently monitoring management system, is based on
The range-measurement system and positioning system of ultra wide band (UWB) wireless communication technique, are established using existing equipment ad-hoc network function
A set of train security protection real time on-line monitoring system, the major function of system are can to monitor the operation shape of full line train in real time
State and position monitor the working condition of train and all fronts ground fixed equipment in real time, are subway train safe operation, improved efficiency
A set of completely new technological means is provided with personnel optimization.
Specifically, the power supply grade of above system is powered for three stage loads, AC220V is provided by subway train and trackside
Power supply power supply mechanism, fluctuation range are+10%~-15%, frequency 50Hz.System itself carries intelligent backup power supply, outside
Under electric power blackout situation, it is ensured that armamentarium works 24 hours or more.
The mobile unit and interface of above system be：
1, mobile unit forms
Mobile unit is made of on-vehicle host, monitoring display, UWB rangings and communication device (containing antenna) etc..Equipment is pacified
Driver's cabin mounted in train rear and front end, is mainly used for before and after monitoring train that (such as circuit is most with ground fixed position for vehicle and train
Head) real-time accurate distance.
2, mobile unit interface
Equipment is connected by following interfaces and train：
(1) vehicle power supply interface：Vehicle-mounted AC220V power supplys can be connected and take electricity.
(2) vehicular speeds sensor interface (optional)：By connection train speed sensor, train tacho-pulse is obtained,
Train operation dynamic is monitored by the speed and direction that judge train.
(3) train terminal device communication connection (optional)：It can be set by the pre- wired connection port of train both ends driver's cabin
It is fixed, it is proposed that the both ends CAN bridge equipment to be used, to realize that device data interconnects.
(4) Vehicle Controller interface (optional)：The mobile unit of system has reserved multiple output interface, these interfaces are main
In order to play a role when realizing the protection of train active safety.Interface can also be connect with train control system, and on-vehicle host can lead to
The access train dynamics total loop control of I/O break-makes is crossed, also can connect train control by serial RS485 interfaces, or pass through about
Fixed data-interface is connected with ATP system.
3, installation space (being determined according to train driving room real space) is reserved
(1) antenna chamber reserves the installation ranging of the spaces 150X180X200mm and communication module above driver's cabin ceiling
(containing antenna) position.
(2) in bridge operation table top, 80X260X180mm display screen installation sites are reserved；
(3) the on-vehicle host peace in the spaces 200X200X260mm is reserved in the cabinet of bridge bottom or in bridge equipment cabinet
Holding position.
The ground installation of above system forms and interface
Ground installation refers to the stationary nodes equipment as ground location mark point, as blind siding backstop, station disengaging or
Specified point position mark etc., for the equipment in addition to not setting display, device structure is consistent with on-vehicle host structure, that is, includes host
With UWB rangings and communication module (containing antenna), host has reserved the multi-interfaces such as CAN interface, serial ports and I/O interfaces, is suitable for
The train safety monitoring of metro environment and a variety of applications of equipment management.Also install wireless network DTU in ground installation additional, realization is set
Standby long-range monitoring.
For collective, stationary nodes equipment can also be applied to the relaying point device of equipment ad hoc network, realize train completely
It needs completely to dispose according to subway line environment when high accuracy positioning.When practical application, point device is fixed because undertaking communication in ground
Function needs to set the antenna of communication device in upper will antenna house, and secures the equipment in the upright bar of about 3.5 meters of a height
On, chargeable backup power supply is configured, by coupling charging with AC220V mains supplies.
Specifically, above-mentioned network monitoring system is by ground fixed point, train mobile device, ground-based server, monitoring
The compositions such as the heart and mobile device.Ground fixed point is responsible for receiving distance measurement request, and locomotive mobile device is responsible for sending distance measurement request simultaneously
It shows ranging data and pushes monitoring result to server, server is responsible for data processing and distribution, and monitoring center is responsible for long-range
Monitor equipment status.
In the planning of total system, for reaching while monitoring train directions, speed, vehicle vehicle distance, vehicle distance, rail
Road state and track switch are opened to information, optimize the security monitoring based on rail and Train Dynamic of train active safety protection system,
On the basis of the data of existing ground computer interlocking monitoring system are intact, ground-based server can unidirectionally receive microcomputer interlock system
The rail monitoring data sent are obtained ahead of time track circuit state according to the data monitoring of microcomputer interlock system and track switch are opened and closed
Status information realizes the high accuracy positioning and train active safety of subway all fronts train by train high precision position data calculation
Protection.
If system cannot obtain the rail information and track switch open and-shut mode information data of ground computer interlocking monitoring, can
Consider that track switch can be opened and closed by the communication function of stationary nodes equipment by increasing switch closure monitoring device in switch location
Information is real-time transmitted on train remote monitoring system or running train, to realize the monitoring of train operation dynamic and long-range pipe
Reason.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (3)
1. a kind of ground network monitoring system for train ranging, which is characterized in that including：Ground fixing end, train movement
End, ground-based server, monitoring center and microcomputer interlock system, wherein
The ground fixing end and train mobile terminal are both provided with host and UWB rangings and communication module, the ground fixing end
It is connect with the train mobile terminal, so that being communicated between the two, and ranging is carried out to train；
The train mobile terminal, for sending distance measurement request and show ranging data, and output distance measurement result；
The ground fixing end is exported for receiving the distance measurement request and distance measurement result, and by the distance measurement result to described
Ground-based server；
The microcomputer interlock system, for monitoring simultaneously output track line status and track switch open and-shut mode information；
The ground-based server is connect with the ground fixing end and microcomputer interlock system respectively, and the ground-based server is for connecing
Receive the distance measurement result, track circuit status information and track switch open and-shut mode information, and export that treated distance measurement result, track
Line state information and track switch open and-shut mode information；
The monitoring center is connect with the ground-based server, and the monitoring center is used to survey according to treated described in reception
Away from result, track circuit status information and track switch open and-shut mode information, remotely monitor the train mobile terminal, ground fixing end and
The operating status of ground-based server, and monitoring track circuit state and track switch open and-shut mode.
2. the ground network monitoring system according to claim 1 for train ranging, which is characterized in that in the monitoring
Pericardium includes control unit, and described control unit is used to export control administration order according to monitoring result, with to the train, ground
Fixing end, ground-based server, microcomputer interlock system, track switch and track circuit are controlled and are managed.
3. the ground network monitoring system according to claim 1 for train ranging, which is characterized in that the train moves
Moved end is connect with the microcomputer interlock system, and the train mobile terminal is used to receive the track circuit status information and road diverges to
Closed state information, and the track circuit status information and track switch open and-shut mode information are exported to the ground-based server.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810431786.0A CN108639107A (en) | 2018-05-08 | 2018-05-08 | Ground network monitoring system for train ranging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810431786.0A CN108639107A (en) | 2018-05-08 | 2018-05-08 | Ground network monitoring system for train ranging |
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| Publication Number | Publication Date |
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| CN108639107A true CN108639107A (en) | 2018-10-12 |
Family
ID=63749851
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| CN201810431786.0A Pending CN108639107A (en) | 2018-05-08 | 2018-05-08 | Ground network monitoring system for train ranging |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108791363A (en) * | 2018-05-09 | 2018-11-13 | 成都九壹通智能科技股份有限公司 | Train active safety protection system based on super-broadband tech |
| CN110329317A (en) * | 2019-06-28 | 2019-10-15 | 成都九壹通智能科技股份有限公司 | Based on pinpoint subway train active protection method and system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120296562A1 (en) * | 2011-05-19 | 2012-11-22 | Carlson Richard C | Collision avoidance system for rail line vehicles |
| CN104880725A (en) * | 2015-06-14 | 2015-09-02 | 成都可益轨道技术有限公司 | Railroad locomotive accurate positioning system |
| CN205524317U (en) * | 2016-02-01 | 2016-08-31 | 成都可益轨道技术有限公司 | Subway train accurate positioning and safe navigation based on range finding mode |
| CN107054413A (en) * | 2016-12-21 | 2017-08-18 | 交控科技股份有限公司 | A kind of track traffic full-automatic driving compressing method and system |
| CN107640164A (en) * | 2017-10-30 | 2018-01-30 | 成都九壹通智能科技股份有限公司 | A kind of train automated driving system based on UWB communications with ranging |
| CN108545099A (en) * | 2018-05-07 | 2018-09-18 | 成都九壹通智能科技股份有限公司 | Traveler guiding system based on train exact position |
| CN108639109A (en) * | 2018-05-07 | 2018-10-12 | 成都九壹通智能科技股份有限公司 | Subway train high-precision dot positioning system |
-
2018
- 2018-05-08 CN CN201810431786.0A patent/CN108639107A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120296562A1 (en) * | 2011-05-19 | 2012-11-22 | Carlson Richard C | Collision avoidance system for rail line vehicles |
| CN104880725A (en) * | 2015-06-14 | 2015-09-02 | 成都可益轨道技术有限公司 | Railroad locomotive accurate positioning system |
| CN205524317U (en) * | 2016-02-01 | 2016-08-31 | 成都可益轨道技术有限公司 | Subway train accurate positioning and safe navigation based on range finding mode |
| CN107054413A (en) * | 2016-12-21 | 2017-08-18 | 交控科技股份有限公司 | A kind of track traffic full-automatic driving compressing method and system |
| CN107640164A (en) * | 2017-10-30 | 2018-01-30 | 成都九壹通智能科技股份有限公司 | A kind of train automated driving system based on UWB communications with ranging |
| CN108545099A (en) * | 2018-05-07 | 2018-09-18 | 成都九壹通智能科技股份有限公司 | Traveler guiding system based on train exact position |
| CN108639109A (en) * | 2018-05-07 | 2018-10-12 | 成都九壹通智能科技股份有限公司 | Subway train high-precision dot positioning system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108791363A (en) * | 2018-05-09 | 2018-11-13 | 成都九壹通智能科技股份有限公司 | Train active safety protection system based on super-broadband tech |
| CN110329317A (en) * | 2019-06-28 | 2019-10-15 | 成都九壹通智能科技股份有限公司 | Based on pinpoint subway train active protection method and system |
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Application publication date: 20181012 |