CN107819503A - Car antenna switching control terminal and rail vehicle earth communication system - Google Patents
Car antenna switching control terminal and rail vehicle earth communication system Download PDFInfo
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- CN107819503A CN107819503A CN201711137018.6A CN201711137018A CN107819503A CN 107819503 A CN107819503 A CN 107819503A CN 201711137018 A CN201711137018 A CN 201711137018A CN 107819503 A CN107819503 A CN 107819503A
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- Prior art keywords
- train
- transmission mode
- switching command
- terminal
- car antenna
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
- H04B7/0834—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection based on external parameters, e.g. subscriber speed or location
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/025—Services making use of location information using location based information parameters
- H04W4/027—Services making use of location information using location based information parameters using movement velocity, acceleration information
Abstract
The invention provides a kind of car antenna switching control terminal and rail vehicle earth communication system.The car antenna switching control terminal includes：Storage part, communication unit, train running information acquisition unit, transmission mode acquisition unit, mode decision portion and switching command generating unit, wherein, storage part is at least stored with train position, traffic direction and the situation theory transmission mode corresponding with train position and traffic direction, train running information acquisition unit is obtained including at least the train running information for having current location in real time by communication unit from train terminal, situation theory transmission mode of the transmission mode acquisition unit according to corresponding to current location from storage part acquisition current location, and current transmission mode is obtained from train terminal by communication unit, mode decision portion judges whether current transmission mode is consistent with situation theory transmission mode, when judged result is inconsistent, switching command generating unit generates switching command, switching command is sent to train terminal by communication unit.
Description
Technical field
The present invention relates to wireless communication field, and in particular to a kind of car antenna switching control terminal and vehicle-mounted comprising this
The rail vehicle earth communication system of antenna switching control terminal.
Background technology
Track traffic has become urban public tranlport system with its quick, safety, distinguishing feature punctual, freight volume is big
Backbone network.Train control system (CBTC), passenger information system (PIS) and comprehensive monitoring system of track traffic etc. are equal
Need to realize the real-time Communication for Power of train and ground control centre, therefore the train-ground communication communication system in the system is to track traffic
For it is most important.
Rail line is typically mounted at ground, overhead, tunnel, and wireless signal working environment complexity is not, it is necessary to according to
With environmental selection different radio transmission medium, the wireless transmission medium mainly used at present have freely wireless, slotted waveguide and
Three kinds of leaky cable.In this several communication mode, freely wirelessly easily disturbed by external signal, stability is poor, still
With the easy to install, advantage such as cost is low, it is generally used for disturbing less tunnel.Leaky cable and slotted waveguide operation principle phase
Seemingly, there is anti-interference, high stability and low-loss, shortcoming is that cost is relatively freely wireless higher, great in constructing amount, because
This is more applied to the complicated scene of wireless environment, more applied to ground, overhead.
One rail line is usually containing a variety of situations such as ground, overhead and tunnels, as shown in fig. 7, application at present
In the generally use of terrestrial wireless signal equipment 7 of track traffic communication free wireless and slotted waveguide combination or free nothing
Line and leaky cable combination carry out outside electromagnetic signals, i.e., in tunnel using free wireless antenna 5, ground or overhead
Duan Caiyong slotted waveguides or leaky cable 6.
In order to take into account combinations thereof situation, the method typically used on train 8 is that vehicle-mounted wireless terminal device 4 passes through work(point
Device or shunt 3 connect two kinds of car antennas 1 and 2 simultaneously.Wherein, car antenna 1 is typically mounted at the bottom of train, is used for
Received from the electromagnetic wave signal launched by wireless antenna 5；Car antenna 2 is typically mounted at bottom or the sidepiece of train, for connecing
Receive the electromagnetic wave signal that slotted waveguide or leaky cable 6 are launched.Due to the operation principle of slotted waveguide and leaky cable, exist
Coupling loss, and due to the operation principle of free wireless antenna, interference between two kinds of car antennas 1 and 2 can be present, it is special
It is not that car antenna 1 can receive external interference signal, to vehicle-mounted in train operation to slotted waveguide or leaky cable section
Antenna 2 causes stronger co-channel interference, situations such as influenceing communication quality, or even cause communication disruption.
The content of the invention
The present invention is, and it is an object of the present invention to provide a kind of car antenna switching control terminal in order to solving the above problems and carry out
And include the rail vehicle earth communication system of the car antenna switching control terminal.
In order to solve the above technical problems, present invention employs following technical scheme：
The present invention provides a kind of car antenna switching control terminal, installs ON TRAINS and is communicated to connect with train terminal,
For the switching command for the car antenna for providing train terminal, it is characterised in that including：Storage part, communication unit, train operation letter
Acquisition unit, transmission mode acquisition unit, mode decision portion and switching command generating unit are ceased, wherein, storage part is at least stored with row
Truck position, traffic direction and the situation theory transmission mode corresponding with train position and traffic direction, train running information
Acquisition unit is obtained and obtained including at least the train running information for having current location, transmission mode in real time by communication unit from train terminal
Situation theory transmission mode corresponding to taking portion according to current location to obtain current location from storage part, and by communication unit from row
Car terminal obtains current transmission mode, and mode decision portion judges whether current transmission mode is consistent with situation theory transmission mode,
When judged result is inconsistent, switching command is sent to train end by switching command generating unit generation switching command, communication unit
End.
Car antenna switching control terminal provided by the invention, can also have the feature that：Wherein, storage part is also deposited
Contain the section information corresponding with train position, traffic direction and the section theoretical transmission mould corresponding with the section information
Formula, transmission mode acquisition unit obtains corresponding section theoretical transmission pattern from storage part always according to current location, when pattern is sentenced
When disconnected portion judges that current transmission mode is consistent with situation theory transmission mode, mode decision portion determines whether current transmission mode
It is whether consistent with section theoretical transmission pattern, when judged result is inconsistent, switching command generating unit generation switching command, lead to
Switching command is sent to train terminal by letter portion.
Car antenna switching control terminal provided by the invention, can also have the feature that：Also include：Information processing
Portion, time storage part and time judging part, wherein, storage part is also stored between train position and adjacent switching position
Distance, switching position is corresponding with train position, traffic direction, and train running information also includes the speed of service, and the time deposits
Storage portion is stored with the scheduled time, when mode decision portion judges that current transmission mode is consistent with situation theory transmission mode, information
Processing unit is according to the speed of service and obtains train apart from processing and is run from current location to the run time needed for switching position, when
Between judging part judge run time whether in the range of the scheduled time, when judged result for be when, switching command generating unit generation
Switching command is sent to train terminal by switching command, communication unit.
Car antenna switching control terminal provided by the invention, can also have the feature that：Also include：Information processing
Portion, time storage part and time judging part, wherein, storage part is also stored with the area corresponding with train position and traffic direction
Between segment information, the section theoretical transmission pattern and train position and adjacent switching position corresponding with the section information
Distance, switching position is corresponding with train position, traffic direction, and train running information also includes the speed of service, and the time deposits
Storage portion is stored with the scheduled time, and transmission mode acquisition unit obtains the theoretical biography of corresponding section always according to current location from storage part
Defeated pattern, when mode decision portion judges that current transmission mode is consistent with situation theory transmission mode, mode decision portion is further
Judge whether current transmission mode and section theoretical transmission pattern are consistent, when mode decision portion judges current transmission mode and section
When theoretical transmission pattern is consistent, information treatment part is according to the speed of service and obtains train apart from processing and is run from current location to cutting
Run time needed for change place, when time judging part judges that run time is in the range of the scheduled time, switching command generating unit
Generate switching command, switching command is sent to train terminal by communication unit, when mode decision portion enter to judge current transmission mode with
When section theoretical transmission pattern is inconsistent, switching command is sent to by switching command generating unit generation switching command, communication unit
Train terminal.
Car antenna switching control terminal provided by the invention, can also have the feature that：Wherein, theoretical transmission mould
Formula is wireless network or cable network.
Car antenna switching control terminal provided by the invention, can also have the feature that：Wherein, wireless network is
Free wireless network, either slotted waveguide wireless network or leaky cable wireless network.
The present invention also provides a kind of rail vehicle earth communication system, it is characterised in that including：Train terminal, it is arranged on
On train, there are two kinds of different car antennas；And car antenna switching control terminal, set ON TRAINS and whole with train
End communication connection, for providing the switching command of car antenna, wherein, car antenna switching control terminal is any of the above-described
Car antenna switching control terminal.
Rail vehicle earth communication system provided by the invention, can also have the feature that：Wherein, train terminal bag
Include train-side communication unit, train-side train running information acquisition unit, train-side transmission mode acquisition unit and car antenna switching
Portion, train-side train running information acquisition unit obtain train running information in real time, and train-side communication unit sends out train running information
Car antenna switching control terminal is given, train-side transmission mode acquisition unit obtains current transmission mode, and train-side communication unit will
Current transmission mode is sent to car antenna switching control terminal, and train-side communication unit receives car antenna switching control terminal hair
The switching command sent, car antenna switching part switch over car antenna according to switching command.
Rail vehicle earth communication system provided by the invention, can also have the feature that：Wherein, car antenna is
At least one of cable antenna and wireless antenna, wireless antenna are free wireless receiving antenna, slotted waveguide reception antenna
And any one in leaky cable reception antenna.
Rail vehicle earth communication system provided by the invention, can also have the feature that：Wherein, freely wirelessly connect
The top that antenna is arranged on train is received, slotted waveguide reception antenna and leaky cable reception antenna are arranged at the bottom of train
Portion.
Invention effect and effect
Car antenna switching control terminal of the present invention and the track for including the car antenna switching control terminal
Traffic land mobile communication system, there is current location because train running information acquisition unit obtains to comprise at least from train terminal in real time
Train running information, transmission mode acquisition unit obtain the corresponding situation theory transmission mode in current location and from row from storage part
Car terminal obtains current transmission mode, and mode decision portion judges that current transmission mode and situation theory transmission mode are inconsistent
When, switching command generating unit generation switching command is simultaneously sent to train terminal, so the present invention can be by obtaining working as train
Front position and current transmission mode, and got currently by inquiring about predetermined situation theory transmission mode in storage part
Situation theory transmission mode corresponding to position, when judging that current transmission mode is inconsistent with situation theory transmission mode,
Sent in real time to train terminal by the vehicle-mounted switching command for switching to the corresponding situation theory transmission mode in current location, so as to
Enable car-mounted terminal under different train operation scenes automatic switchover car antenna be current location corresponding to position
The corresponding car antenna of theoretical transmission pattern, not only increases efficiency of transmission, and it also avoid two kinds of cars in the prior art
It is caused when carrying antenna while working to interfere, train-ground communication quality and safety coefficient are improved, reduces accident hair
Raw probability.
Brief description of the drawings
Fig. 1 is the structured flowchart of embodiments of the invention middle orbit traffic land mobile communication system；
Fig. 2 is the structured flowchart of train terminal in embodiments of the invention；
Fig. 3 is the structured flowchart of car antenna switching control terminal in embodiments of the invention；
Fig. 4 is train position in embodiments of the invention, traffic direction, theoretical transmission pattern and switching apart from corresponding table
Schematic diagram；
Fig. 5 is the structural representation of train terminal in embodiments of the invention；
Fig. 6 be embodiments of the invention middle orbit special bus system action flow chart；And
Fig. 7 is the structural representation of rail vehicle earth communication system in the prior art.
Embodiment
Design, concrete structure and the caused technique effect of the present invention are described further below with reference to accompanying drawing, with
It is fully understood from the purpose of the present invention, feature and effect.
Fig. 1 is the structured flowchart of embodiments of the invention middle orbit traffic land mobile communication system.
As shown in figure 1, the rail transit field system 100 in the present embodiment includes train terminal 101 and car antenna
Switching control terminal 102.
Train terminal 101 is set ON TRAINS, has two kinds of different car antennas.Car antenna be cable antenna and
At least one of wireless antenna, wireless antenna are free wireless receiving antenna, slotted waveguide reception antenna and leaky cable
Any one in reception antenna.In the present embodiment, two kinds of car antennas are respectively free wireless receiving antenna and crack ripple
Lead reception antenna, or respectively free wireless receiving antenna and leaky cable reception antenna.
Car antenna switching control terminal 102 is set ON TRAINS, is connected by communication network 103 with train terminal 101,
For providing the switching command of car antenna for train terminal 101 and being sent to train terminal 101, train terminal 101 is according to cutting
Change instruction to switch over car antenna, so that the car antenna corresponding with transmission mode enters work.Communication network 103 is
Cable network.
Fig. 2 is the structured flowchart of train terminal in embodiments of the invention.
As shown in Fig. 2 train terminal 101 include train-side communication unit 112, train-side train running information acquisition unit 113,
Train-side transmission mode acquisition unit 114, car antenna switching part 115, train-side temporary storage part 116 and the row in the above-mentioned each portion of control
Car side control unit 111.
Fig. 3 is the structured flowchart of car antenna switching control terminal in embodiments of the invention.
As shown in figure 3, car antenna switching control terminal 102 includes storage part 122, instruction-side communication unit 123, instruction-side
Train running information acquisition unit 124, instruction-side transmission mode acquisition unit 125, mode decision portion 126, switching command generating unit
127th, information treatment part 128, time storage part 129, time judging part 130, instruction-side temporary storage part 131 and the above-mentioned each portion of control
Instruction-side control unit 121.
Train-side train running information acquisition unit 113, which is used to obtain in real time, includes current location, traffic direction and fortune
The train running information of scanning frequency degree.
Train-side transmission mode acquisition unit 114 is used for the current transmission mode for obtaining train.
Train-side communication unit 112 is used for obtain train-side train running information acquisition unit 113 by communication network 105
The current transmission mode that train running information and train-side transmission mode acquisition unit 114 obtain is sent to car antenna switching control
Terminal 102 processed；It is additionally operable to receive the switching command that car antenna switching control terminal 102 is sent.
Car antenna switching part 115 is used to be switched over car antenna according to switching command.
Train-side temporary storage part 116 is used for the train operation that temporary transient train car side train running information acquisition unit 113 obtains
The current transmission mode that information and train-side transmission mode acquisition unit 114 obtain；It is additionally operable to temporary transient train car side communication unit
112 switching commands received from car antenna switching control terminal 102.
Train-side control unit 111 includes for controlling train-side communication unit 112, train-side train running information acquisition unit
113rd, the computer that train-side transmission mode acquisition unit 114, car antenna switching part 115 and train-side temporary storage part 116 are run
Program.
Fig. 4 is train position in embodiments of the invention, traffic direction, theoretical transmission pattern and switching apart from corresponding table
Schematic diagram.
As shown in figure 4, storage part 122 is to train position, traffic direction, the position corresponding with train position and traffic direction
Put theoretical transmission pattern, the section information corresponding with train position and traffic direction, managed with the corresponding section of section information
Corresponding storage is carried out by data such as the distance between transmission modes, train position and adjacent switching position.Wherein, switching position
It is corresponding with train position, traffic direction.
Instruction-side communication unit 123 is used to receive train running information and current transmission mould that train terminal 101 is sent
Formula；It is additionally operable to the switching command that switching command generating unit 127 generates being sent to train terminal 101.
Instruction-side train running information acquisition unit 124 is used to obtain in real time from train terminal 101 by instruction-side communication unit 123
Take and include current location, traffic direction and speed of service train running information.
Instruction-side transmission mode acquisition unit 125 is used for according to corresponding to current location from the acquisition of storage part 122 current location
Situation theory transmission mode and section theoretical transmission pattern and the distance between train position and adjacent switching position；Also
For obtaining current transmission mode from train terminal 101 by instruction-side communication unit 123.
Mode decision portion 126 is used to judge whether current transmission mode is consistent with situation theory transmission mode；It is additionally operable to sentence
Whether disconnected current transmission mode and section theoretical transmission pattern are consistent.
Switching command generating unit 127 is used for the generation of switching command.
Information treatment part 128 is used for according to the speed of service and the distance between train position and adjacent switching position place
Reason obtains train and run from current location to the run time needed for switching position.
Time storage part 129 is stored with train and run from current location to the scheduled time of adjacent switching position.
Whether time judging part 130 is used to judge run time in the range of the scheduled time.Here, the scheduled time 0.1
~1.0 seconds.
Instruction-side temporary storage part 131 is used for the train fortune that temporary transient store instruction side communication unit 123 is picked from train terminal 101
Row information and current transmission mode；It is additionally operable to the switching command of the temporarily generation of storage switching command generating unit 127.
Instruction-side control unit 121 includes control storage part 122, instruction-side communication unit 123, instruction-side train running information
Acquisition unit 124, instruction-side transmission mode acquisition unit 125, mode decision portion 126, switching command generating unit 127, information treatment part
128th, the computer program that time storage part 129, time judging part 130 and instruction-side temporary storage part 131 are run.
Fig. 5 is the structural representation of car-mounted terminal in embodiments of the invention.
In the present embodiment, as shown in figure 5, train terminal 101 includes car antenna 101a, car antenna 101b, radio frequency
Switching switch 101c and the in-vehicle wireless device 101d being connected with radio frequency converting switch 101c.Car antenna 101a is free nothing
Line reception antenna, the top of train is arranged on, for received from the electromagnetic wave signal launched by wireless antenna；Car antenna 101b
For slotted waveguide reception antenna or leaky cable reception antenna, be arranged on the bottom of train, for receive slotted waveguide or
Reveal the electromagnetic wave signal of cable transmitting.Radio frequency converting switch 101c is used as car antenna switching part 115, and radio frequency switching is opened
Pass 101c is single-pole double-throw switch (SPDT), two contacts of the single-pole double-throw switch (SPDT) respectively with car antenna 101a and car antenna 101b
Connection.
Fig. 6 is the action flow chart of embodiments of the invention middle orbit traffic land mobile communication system.
As shown in fig. 6, the motion flow of the rail vehicle earth communication system in the present embodiment comprises the following steps：
Step S1, train-side train running information acquisition unit 113 in real time obtain include current location, traffic direction and
The train running information of the speed of service, subsequently into step S2.
Train running information is sent to car antenna switching control terminal 102 by step S2, train-side communication unit 112, so
Enter step S3 afterwards.
Step S3, instruction-side train running information acquisition unit 124 receive train terminal 101 by instruction-side communication unit 123
The train running information sent, subsequently into step S4.
Step S4, train-side transmission mode acquisition unit obtains 114 and obtains current transmission mode in real time, subsequently into step
S5。
Current transmission mode is sent to car antenna switching control terminal 102 by step S5, train-side communication unit 112, so
Enter step S6 afterwards.
Step S6, instruction-side transmission mode acquisition unit 125 receive car-mounted terminal 101 by instruction-side communication unit 123 and sent
The current transmission mode come, and the situation theory according to corresponding to current location from the acquisition of storage part 122 current location transmits mould
Formula, subsequently into step S7.
Step S7, mode decision portion 126 judge whether current transmission mode is consistent with situation theory transmission mode, works as judgement
When being as a result consistent, into step S8, when judged result is inconsistent, into step S12.
Step S8, instruction-side transmission mode acquisition unit 125 obtain corresponding section from storage part 122 according to current location
Theoretical transmission pattern, subsequently into step S9.
Step S9, mode decision portion 126 judge whether current transmission mode and section theoretical transmission pattern are consistent, work as judgement
When being as a result consistent, into step S10, when judged result is inconsistent, into step S12.
Step S10, information treatment part 128 according between the speed of service and train position and adjacent switching position away from
Run from train is obtained from current location to the run time needed for switching position, subsequently into step S11.
Step S11, time judging part 130 judge run time whether in the range of the scheduled time, when judged result is yes
When, into step S12, when judged result is no, into step S1.
Step S12, switching command generating unit 127 generates switching command, subsequently into step S13.
Switching command is sent to train terminal 101 by step S13, instruction-side communication unit 123, subsequently into step S14.
Step S14, train-side communication unit 112 receive the switching command that car antenna switching control terminal 102 is sent, so
Enter step S15 afterwards.
Step S15, car antenna switching part 115 switches over car antenna according to switching command, subsequently into end
State.
Embodiment acts on and effect
Car antenna switching control terminal that the present embodiment is related to and the rail for including the car antenna switching control terminal
Road traffic land mobile communication system, there is current location because train running information acquisition unit obtains to comprise at least from train terminal in real time
Train running information, transmission mode acquisition unit from storage part obtain the corresponding situation theory transmission mode in current location and from
Train terminal obtains current transmission mode, and mode decision portion judges that current transmission mode and situation theory transmission mode are inconsistent
When, switching command generating unit generation switching command is simultaneously sent to train terminal, so the present embodiment can be by obtaining train
Current location and current transmission mode, and worked as by inquiring about predetermined situation theory transmission mode in storage part and getting
Situation theory transmission mode corresponding to front position, judging that current transmission mode and situation theory transmission mode are inconsistent
When, sent in real time to train terminal by the vehicle-mounted switching command for switching to the corresponding situation theory transmission mode in current location,
So that car-mounted terminal can automatic switchover car antenna be corresponding to current location under different train operation scenes
The corresponding car antenna of situation theory transmission mode, not only increases efficiency of transmission, and it also avoid in the prior art two
Kind car antenna is caused when working simultaneously to be interfered, and improves train-ground communication quality and safety coefficient, reduction is got over
Therefore the probability occurred.
Further, since transmission mode acquisition unit obtains corresponding section theoretical transmission from storage part always according to current location
Pattern, mode decision portion current transmission mode be judged as it is consistent with situation theory transmission mode in the case of determine whether
When going out current transmission mode and inconsistent section theoretical transmission pattern, switching command generating unit generation switching command is simultaneously sent to row
Car terminal, it can be ensured that be in two kinds of section theoretical transmission pattern arranged superposed areas in the current location of train and train is from current
When position will be run to next section, next section that car antenna is switched to train and will driven into is sent to train terminal
The switching command of corresponding section theoretical transmission pattern, further increase the reliability and security of car antenna switching.
Further, since it is judged as and situation theory transmission mode and/or section theoretical transmission mould in current transmission mode
In the case that formula is consistent, information treatment part obtains according to the speed of service and current location with the distance between switching position processing
Train from current location run to the run time needed for switching position in the range of the scheduled time when, switching command generating unit life
Into switching command and it is sent to train terminal so that train train terminal when operation is to switching position can enter car antenna
Row is switched fast, and improves the reliability of car antenna switching.
Claims (10)
1. a kind of car antenna switching control terminal, install ON TRAINS and communicated to connect with train terminal, it is described for providing
The switching command of the car antenna of train terminal, it is characterised in that including：
Storage part, communication unit, train running information acquisition unit, transmission mode acquisition unit, mode decision portion and switching command life
Into portion,
Wherein, the storage part be at least stored with train position, traffic direction and with the train position and the operation side
To corresponding situation theory transmission mode,
The train running information acquisition unit obtains to comprise at least in real time by communication unit from the train terminal current location
Train running information,
Institute of the transmission mode acquisition unit according to corresponding to the current location from the storage part acquisition current location
Rheme puts theoretical transmission pattern, and obtains current transmission mode from the train terminal by communication unit,
The mode decision portion judges whether the current transmission mode and the situation theory transmission mode are consistent,
When judged result is inconsistent, the switching command generating unit generates switching command,
The switching command is sent to the train terminal by the communication unit.
2. car antenna switching control terminal according to claim 1, it is characterised in that：
Wherein, the storage part be also stored with the section information corresponding with the train position, the traffic direction and with
The corresponding section theoretical transmission pattern of the section information,
The transmission mode acquisition unit obtains corresponding section theory from the storage part always according to the current location
Transmission mode,
When the mode decision portion judges that the current transmission mode is consistent with the situation theory transmission mode, the pattern
Judging part determines whether the current transmission mode and the section theoretical transmission pattern are consistent,
When judged result is inconsistent, the switching command generating unit generates switching command,
The switching command is sent to the train terminal by the communication unit.
3. car antenna switching control terminal according to claim 1, it is characterised in that also include：
Information treatment part, time storage part and time judging part,
Wherein, the storage part is also stored with the distance between the train position and adjacent switching position, the toggle bit
Put it is corresponding with the train position, the traffic direction,
The train running information also includes the speed of service,
The time storage part is stored with the scheduled time,
When the mode decision portion judges that the current transmission mode is consistent with the situation theory transmission mode, described information
Processing unit obtains the train and run from the current location to the switching according to the speed of service and the distance processing
Run time needed for position,
The time judging part judges the run time whether in the range of the scheduled time,
When judged result for when being, the switching command generating unit generates switching command,
The switching command is sent to the train terminal by the communication unit.
4. car antenna switching control terminal according to claim 1, it is characterised in that also include：
Information treatment part, time storage part and time judging part,
Wherein, the storage part is also stored with the section information corresponding with the train position and the traffic direction, with being somebody's turn to do
The corresponding section theoretical transmission pattern of section information and the distance between the train position and adjacent switching position, institute
It is corresponding with the train position, the traffic direction to state switching position,
The train running information also includes the speed of service,
The time storage part is stored with the scheduled time,
The transmission mode acquisition unit obtains corresponding section theory from the storage part always according to the current location
Transmission mode,
When the mode decision portion judges that the current transmission mode is consistent with the situation theory transmission mode, the pattern
Judging part determines whether the current transmission mode and the section theoretical transmission pattern are consistent,
When the mode decision portion judges that the current transmission mode is consistent with the section theoretical transmission pattern, described information
Processing unit obtains the train and run from the current location to the switching according to the speed of service and the distance processing
Run time needed for position, when the time judging part judges that the run time is in the range of the scheduled time, the switching
Command generation unit generates switching command, and the switching command is sent to the train terminal by the communication unit,
When the mode decision portion enters to judge the current transmission mode with the section theoretical transmission pattern to be inconsistent, institute
Switching command generating unit generation switching command is stated, the switching command is sent to the train terminal by the communication unit.
5. car antenna switching control terminal according to claim 1, it is characterised in that：
Wherein, the theoretical transmission pattern is wireless network or cable network.
6. car antenna switching control terminal according to claim 5, it is characterised in that：
Wherein, the wireless network is free wireless network, either slotted waveguide wireless network or leaky cable wireless network
Network.
A kind of 7. rail vehicle earth communication system, it is characterised in that including：
Train terminal, set ON TRAINS, there are two kinds of different car antennas；And
Car antenna switching control terminal, set ON TRAINS and communicated to connect with the train terminal, for providing the car
The switching command of antenna is carried,
Wherein, the car antenna switching control terminal is the car antenna switching control any one of claim 1 to 6
Terminal.
8. rail vehicle earth communication system according to claim 7, it is characterised in that：
Wherein, the train terminal includes train-side communication unit, train-side train running information acquisition unit, train-side transmission mode
Acquisition unit and car antenna switching part,
The train-side train running information acquisition unit obtains the train running information in real time,
The train running information is sent to the car antenna switching control terminal by the train-side communication unit,
The train-side transmission mode acquisition unit obtains the current transmission mode,
The current transmission mode is sent to the car antenna switching control terminal by the train-side communication unit,
The train-side communication unit receives the switching command that the car antenna switching control terminal is sent,
The car antenna switching part switches over the car antenna according to the switching command.
9. rail vehicle earth communication system according to claim 7, it is characterised in that：
Wherein, the car antenna is at least one of cable antenna and wireless antenna,
The wireless antenna is appointing in free wireless receiving antenna, slotted waveguide reception antenna and leaky cable reception antenna
Meaning is a kind of.
10. rail vehicle earth communication system according to claim 9, it is characterised in that：
Wherein, the free wireless receiving antenna is arranged on the top of the train,
The slotted waveguide reception antenna and the leaky cable reception antenna are arranged at the bottom of the train.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711137018.6A CN107819503B (en) | 2017-11-16 | 2017-11-16 | Vehicle-mounted antenna switching control terminal and rail transit vehicle-ground communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711137018.6A CN107819503B (en) | 2017-11-16 | 2017-11-16 | Vehicle-mounted antenna switching control terminal and rail transit vehicle-ground communication system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107819503A true CN107819503A (en) | 2018-03-20 |
| CN107819503B CN107819503B (en) | 2020-09-29 |
Family
ID=61609757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711137018.6A Active CN107819503B (en) | 2017-11-16 | 2017-11-16 | Vehicle-mounted antenna switching control terminal and rail transit vehicle-ground communication system |
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| CN108601053A (en) * | 2018-07-23 | 2018-09-28 | 华东交通大学 | Wireless network switching optimization method under a kind of high-speed railway scene |
| CN108964738A (en) * | 2018-04-11 | 2018-12-07 | 莫志刚 | A kind of vehicle-mounted antenna system for rail transit field wireless system |
| CN110225561A (en) * | 2019-05-31 | 2019-09-10 | 北京轨道交通路网管理有限公司 | Onboard wireless access device and its communication means, device and storage medium |
| CN110753377A (en) * | 2018-07-24 | 2020-02-04 | 普天信息技术有限公司 | Cell switching method based on position, terminal and base station |
| CN110933644A (en) * | 2019-11-16 | 2020-03-27 | 北京市地铁运营有限公司地铁运营技术研发中心 | Train-ground wireless communication system and communication method |
| CN113147830A (en) * | 2021-04-15 | 2021-07-23 | 大连交通大学 | Follow-up type track circuit ranging communication system |
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| CN113147830A (en) * | 2021-04-15 | 2021-07-23 | 大连交通大学 | Follow-up type track circuit ranging communication system |
| CN113147830B (en) * | 2021-04-15 | 2022-10-11 | 大连交通大学 | Follow-up type track circuit ranging communication system |
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