CN208411757U - A kind of orbit occupancy inspection system based on communication - Google Patents
A kind of orbit occupancy inspection system based on communication Download PDFInfo
- Publication number
- CN208411757U CN208411757U CN201821068300.3U CN201821068300U CN208411757U CN 208411757 U CN208411757 U CN 208411757U CN 201821068300 U CN201821068300 U CN 201821068300U CN 208411757 U CN208411757 U CN 208411757U
- Authority
- CN
- China
- Prior art keywords
- transponder
- communication
- orbit occupancy
- orbit
- checks
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The field of track traffic such as the utility model belongs to railway, magnetic floats, it is related to a kind of orbit occupancy inspection system based on communication, checks the mobile unit of central apparatus, the transponder being mounted near each end of track section, installation ON TRAINS and the communication system for communicating between mobile unit and orbit occupancy inspection central apparatus including orbit occupancy；The mobile unit includes on-vehicle host, transponder antenna and radio station.The utility model occupies inspection system using the novel track that transponder technology and wireless communication technique cooperate with constructing a vehicle, transponder need to be only installed along the railway, trackside equipment quantity is reduced at least, and these trackside equipment can all be no maintenance, passive equipment, without laying cable, therefore, ground surface works amount is small, implements to be easy, signal special maintenance workload is small, to the railway maintenance j ob impact of works department also very little.
Description
Technical field
The field of track traffic such as the utility model relates to this patents to belong to railway, magnetic floats, and in particular, to a kind of energy is automatic
The orbit occupancy for checking that track section is occupied whether there is or not train or car team checks system.
Background technique
Currently, whether a certain track section has train or car team (for narration simplicity, below will in railway line for checking
" train ", " car team " are referred to as " train ") there are two ways to occupying: one is examined using track circuit or meter shaft orbit occupancy
The mode of device is looked into, i.e., trackside equipment equipment is set on the railroad track, passes through the cable, optical cable and indoor equipment along wire routing
Equipment links into an integrated entity, and constitutes an orbit occupancy and checks system；It is special that this mode structure is simple, safety readily satisfies signal
The principle of industry fault-safety principle, be it is a kind of it is most traditional, using most common orbit occupancy test mode；This mode lacks
Point is: numerous trackside equipment equipment, a large amount of photoelectricity cables of laying need to be installed along the railway, so that project amount and outdoor maintenance
Heavy workload, but also it is unfavorable for the railway maintenance operation of works department；It is connect in addition, there is insulation track circuit to need rail
Head hinders the realization of gapless line gapless track technology.The second way is using satellite positioning tech, although the technology trackside
Equipment and material is few, ground surface works amount is small, implements to be easier, but the resolution ratio of satellite is lower, to the accuracy of train positioning compared with
Difference, such as in two-wire or multi-thread parallel section, it is difficult to which precisely which route identification train is located on；In addition, satellite cannot identify
In tunnel, awning is inferior whether the track section blocked has train occupation, and therefore, this mode field of employment is very limited,
It is seldom used in engineering.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of orbit occupancy inspection system based on communication, this is
System include orbit occupancy check central apparatus, installation mobile unit ON TRAINS, be mounted on track section each end it is attached
Close transponder (being also possible to other equipment with transponder function, such as electronic tag) and it is used for mobile unit and rail
Road occupies the communication system for checking and communicating between central apparatus, and the mobile unit includes on-vehicle host, transponder antenna and nothing
Line radio station, the transponder antenna include being separately mounted to headstock bottom close to the first transponder antenna of headstock end and being located at
Second transponder antenna of the tailstock bottom close to tailstock end.
Further, the preferred passive balise of the transponder.
Further, the transponder with where it at a distance from nearest end of track section not less than transponder antenna with
The distance between its ipsilateral train end.
Further, the radio station is mounted on radio communication conditions preferably and connect advantageous place with on-vehicle host
Institute, the preferably top of train head.
Further, the transponder antenna, radio station are electrically connected with on-vehicle host respectively, obtain work from on-vehicle host
Make power supply, and realizes two-way communication.For the ordinary train of locomotive traction, the described transponder antenna positioned at the tailstock be located at
Wire communication or communication are used between the on-vehicle host of headstock；When using communication, the tailstock
Transponder antenna also need separately to match wireless communication module, or even also need separately to match power supply device.
Further, communication is used between the communication system and the radio station, with orbit occupancy
It checks between central apparatus using wired communication mode or wired plus wireless communication mode.
Further, it is preferable to radio station described in two, the two radio station's redundancy of effort.
Further, the orbit occupancy checks central apparatus and on-vehicle host, it is preferred to use hardware security redundancy knot
Structure.
Further, orbit occupancy checks that the preferred two-way independent communication of communication between central apparatus and on-vehicle host is logical
Road, using two-way redundancy of effort mode.
The beneficial effects of the utility model are:
1. traditional orbit occupancy checks system, as track circuit and meter shaft orbit occupancy check device are both needed on railway edge
Line installs numerous trackside equipment equipment, a large amount of photoelectricity cables of laying, and the utility model utilizes transponder technology and wireless communication
The novel track that technology cooperates with constructing a vehicle occupies inspection system, need to only install transponder along the railway, pass through response
Near field communication between device antenna and transponder, when the distance of transponder antenna to transponder is in pre-determined distance,
Transponder antenna obtains transponder information automatically, and sends transponder information and transponder antenna information to on-vehicle host, vehicle
It carries host and transponder information and transponder antenna information and train information is sent to orbit occupancy inspection by communication system
Central apparatus, orbit occupancy check central apparatus according to receive transponder information, transponder antenna information, train information and
The track information data library pre-established judges and exports in real time the status information of each track section, therefore the utility model can incite somebody to action
Trackside equipment quantity is reduced at least, and these trackside equipment are all no maintenance, passive equipment, without laying cable,
Ground surface works amount is small, implements to be easy, and signal special maintenance workload is small, also very to the railway maintenance j ob impact of works department
It is small, while the utility model is not influenced also by track structure and railway roadbed condition, can be used for Ballast track, non-fragment orbit, rust
All track sections such as lose serious rail and sew serious railway roadbed.
2. compared with the orbit occupancy based on satellite positioning checks system, the orbit occupancy based on communication of the utility model
Inspection system does not depend on satellite positioning, and not blocked by tunnel, awning etc. is influenced, can be used for single line, multi-thread, section, stand in etc.
All track sections.
3. the orbit occupancy based on communication of the utility model checks that system is applied widely, railway neck can be not only used for
Domain, it may also be used for the various field of track traffic such as subway, light rail, tramcar, magnetic is floating.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that the orbit occupancy provided by the embodiment of the utility model based on communication checks system；
Fig. 2 is the structure for the mobile unit that the orbit occupancy provided by the embodiment of the utility model based on communication checks system
Schematic diagram；
Fig. 3 is the orbit occupancy inspection system provided by the embodiment of the utility model based on communication without diverging tracks section
Arrangement of responder schematic diagram；
The position Fig. 4 orbit occupancy provided by the embodiment of the utility model based on communication checks that system has answering for trouble track section
Answer device arrangement schematic diagram.
Specific embodiment
The principles of the present invention and feature are described below in conjunction with example, example is served only for explaining that this is practical
It is novel, it is not intended to limit the scope of the utility model.
Fig. 1 is the structural schematic diagram that the orbit occupancy provided by the embodiment of the utility model based on communication checks system, such as
Shown in Fig. 1, which is made of four parts, the transponder 1 being respectively as follows: near each end for being mounted on track section, peace
The mobile unit 2 of dress ON TRAINS, orbit occupancy check central apparatus 3, and in mobile unit 2 and orbit occupancy inspection
The communication system 4 communicated between heart equipment 3.
Wherein the transponder 1 can be other equipment with transponder function, such as electronic tag.Every transponder
It all include the transponder information of unique transponder number in 1, when engineering construction, the transponder number can be according in route
The name of the features such as journey and route traffic direction, the transponder information can be preset in corresponding transponder.
Each end of track section is nearby installed by 1 transponder 1, the transponder 1 and track where it respectively
The distance of the nearest end of section is not less than the distance between transponder antenna and its ipsilateral train end.
The transponder 1 can be passive balise, be also possible to active balise, in order to drop equipment quantity by track
As low as at least and without laying cable, it is preferable that the transponder 1 is passive balise.
The orbit occupancy checks that central apparatus 3 is pre-established with track information data library, the track information data library
Track data, track section division information, transponder distributed intelligence and the corresponding spy of every transponder including all routes
Reference breath etc..
In order to improve the working environment that the orbit occupancy checks central apparatus 3, it is preferable that the orbit occupancy inspection
Central apparatus 3 is looked into be arranged in a certain building in ground.
Fig. 2 is the knot for the mobile unit 2 that the orbit occupancy provided by the embodiment of the utility model based on communication checks system
Structure schematic diagram, as shown in Fig. 2, the mobile unit 2 includes: to be separately mounted to the bottom of headstock and the tailstock close to car end
Transponder antenna 21a and 21b, radio station, on-vehicle host 23.
The transponder antenna, radio station are electrically connected with on-vehicle host 23 respectively, obtain work electricity from on-vehicle host 23
Source, and realize two-way communication.It should be noted that for the ordinary train of locomotive traction, the transponder positioned at the tailstock
Antenna 21b and between the on-vehicle host 23 of headstock use wire communication or communication；When using side wireless communication
When formula, the transponder antenna 21b of the tailstock also needs separately to match wireless communication module, or even also needs separately to match power supply device.
The radio station be mounted on radio communication conditions preferably, advantageous place, preferably headstock are connect with on-vehicle host
Top.Merely technically, orbit occupancy described in the utility model checks system Zhi Xuyige radio station, but
In order to guarantee the high reliability of system work, Liang Ge radio station is set in the present embodiment, it is respectively radio station 22a, wireless
Radio station 22b, the two radio station's redundancy of effort.
The on-vehicle host 23 is mounted in the good cabinet of electromagnetic environment, operating condition.
Transponder antenna information is preset in each transponder antenna, the transponder antenna information includes answering
Answer device antenna number；Train information is preset in the on-vehicle host 23, the train information may include on-vehicle host number, also
It may include the information such as locomotive unit number, train number number.
The on-vehicle host 23 can read the transponder antenna information；The transponder antenna is similar to reader,
Near field communication can be realized with the transponder on ground, when the distance of transponder antenna to transponder is in pre-determined distance,
Energy automatic identification and the information for obtaining transponder.
In addition, the communication system 4 is the integrated system for integrating wireless communication, wired communication functions, it with
Communication is used between described radio station 22a, the 22b, is checked with the orbit occupancy and is adopted between central apparatus 3
With wired communication mode or wired plus wireless communication mode.
In order to further increase the reliability of system, it is preferable that the orbit occupancy checks central apparatus 3 and vehicle-mounted master
Hardware security redundancy structure can be used in machine 23, and orbit occupancy checks that the communication between central apparatus 3 and on-vehicle host 23 can adopt
With two-way independent communication channel, redundancy of effort mode.
Fig. 3 is the orbit occupancy inspection system provided by the embodiment of the utility model based on communication without diverging tracks section
Arrangement of responder schematic diagram, as shown in figure 3, a transponder, such as track regions are respectively set at the both ends of each track section
The left end of section 0G is provided with transponder 0a, and right end is equipped with transponder 0b；The left end of track section 1G is provided with transponder 1a, it is right
End is provided with transponder 1b；The left end of track section 2G is provided with transponder 2a, right end has been provided with transponder 2b, transponder
Among 0b and 1a, the middle position 1b and 2a be the end of track section or the theoretical separation of adjacent orbit section.In addition, institute
It states at a distance from the transponder end nearest with track section where it not less than between transponder antenna and its ipsilateral car end
Distance.Such as transponder 0b to the distance between the end of right end of track section 0G not less than transponder antenna 21a to arranging
The distance between vehicle right part, nor less than the distance between transponder antenna 21b to train left part, to work as transponder day
When line 21a (or 21b) senses transponder, train right end (or left end) will not stride into adjacent track section.
The orbit occupancy based on communication of the utility model checks that the working principle of system is as follows:
Assuming that a certain moment, there is train occupation on track section 0G, track section 1G, 2G do not have train occupation, and track accounts for
Exporting 0G with inspection central apparatus 3 has the correct informations such as vehicle occupancy, 1G track clear and 2G track clear.It is now assumed that train is from OG
(i.e. to right travel) is run to the direction 2G.
(1) when the first transponder antenna 21a when train head reaches at transponder 0b, the first transponder antenna 21a meeting
Send the transponder antenna information of its own in the information superposition of the transponder 0b received to on-vehicle host 23, on-vehicle host
23 again by the information of the transponder 0b received, the transponder antenna information and on-vehicle host 23 of the first transponder antenna 21a
The train information of middle storage sends orbit occupancy to by radio station and communication system 4 and checks central apparatus 3, orbit occupancy inspection
Look into central apparatus 3 obtain these information after, according to the track data of all routes pre-established, track section division information,
Transponder distributed intelligence etc., judging 0G to have vehicle occupied state and setting adjacent orbit section 1G immediately is to have vehicle occupied state.
(2) when the first transponder antenna 21a when train head reaches at transponder 1a, the first transponder antenna 21a meeting
Send the transponder antenna information of its own in the information superposition of the transponder 1a received to on-vehicle host 23, on-vehicle host
23 again by the information of the transponder 1a received, the transponder antenna information and on-vehicle host 23 of the first transponder antenna 21a
The train information of middle storage sends orbit occupancy to by radio station and communication system 4 and checks central apparatus 3, orbit occupancy inspection
Look into central apparatus 3 obtain these information after, according to the track data of all routes pre-established, track section division information,
Transponder distributed intelligence etc. determines that train is to run to the right, and train head continues to set 0G, 1G in injection section 1G
To there is vehicle occupied state.
(3) when the second transponder antenna 21b of last vehicle of train reaches at transponder 0b, the second transponder antenna 21b meeting
Send the transponder antenna information of its own in the information superposition of the transponder 0b received to on-vehicle host 23, on-vehicle host
23 again by the information of the transponder 0b received, the transponder antenna information and on-vehicle host 23 of the second transponder antenna 21b
The train information of middle storage sends orbit occupancy to by radio station and communication system 4 and checks central apparatus 3, orbit occupancy inspection
Look into central apparatus 3 obtain these information after, according to the track data of all routes pre-established, track section division information,
Transponder distributed intelligence etc. determines that train is still to run to the right, and train will be driven out to 0G, and continues to set 0G, 1G to be to have vehicle to account for
Use state.
(4) when the second transponder antenna 21b of last vehicle of train reaches at transponder 1a, the second transponder antenna 21b meeting
Send the transponder antenna information of its own in the information superposition of the transponder 1a received to on-vehicle host 23, on-vehicle host
23 again by the information of the transponder 1a received, the transponder antenna information and on-vehicle host 23 of the second transponder antenna 21b
The train information of middle storage sends orbit occupancy to by radio station and communication system 4 and checks central apparatus 3, orbit occupancy inspection
Look into central apparatus 3 obtain these information after, according to the track data of all routes pre-established, track section division information,
Transponder distributed intelligence etc. determines that train is still to run to the right, and train is driven out to 0G completely, completely into 1G, then by 0G
It is set to track clear state, 1G has remained as vehicle occupied state.
Train continues right lateral, and the state change process of 1G, 2G are same as described above, and details are not described herein.
It will also be seen from the above that between neighbouring two transponders of adjacent orbit section, as between the 0b and 1a in Fig. 3
And the region between 1b and 2a is the transponder antenna of the fuzzy overlay region of the two adjacent orbit sections, train head or tail portion
When into the region, for safety, setting adjacent orbit section without exception is to have vehicle occupied state, only answering when train head
Answer the transponder antenna of device antenna and tail portion it is equidirectional cross the region after, the track section crossed could be set to track sky
Not busy state.
The orbit occupancy of the utility model checks that system can be not only used for the track section not diverged as shown in Figure 3,
It can also be used for the track section for thering is track switch to diverge as shown in Figure 4.
As shown in figure 4, track section 1G is switch section, one response need to be set in each end of the track section
Device, such as the 1a before branching off, 1b after straight stock trouble, the 1c after curved stock trouble, under normal circumstances, when blocking the way is diverged to straight stock, transponder 1a,
1b participates in work, and working principle is same as above；When blocking the way is diverged to curved stock, transponder 1a, 1c participate in work, and working principle is still same as above,
Details are not described herein.
Communication system in the utility model can make full use of existing telecommunication system resources, for example, current institute of China
Have newly built railway be completed covering all fronts GSM-R wireless communication system, it is both wired and press GSM-R standard carry out wirelessly
Communication system upgrading transformation, the developing direction of Measurement of Railway Radio Communication System next step will be developed to LTE-R, therefore, in reality
Engineer application in, orbit occupancy described in the utility model checks that system can use this ready-made wireless communication system money
Source, without separately building a set of communication system, certainly, in order to guarantee that orbit occupancy described in this patent checks the highly reliable of system
Property, wireless coverage preferably uses overlapping redundancy coverage mode.
Equally, it is existing to check that system can also further make full use of for the orbit occupancy described in the utility model based on communication
Some communication and signal system resources, for example, the high-speed railway of China speed per hour 250km or more is according to CTCS-3 grades of train control systems
Construction, the system is by radio block center equipment, transponder, ZPW-2000 series of track circuit, vehicle-mounted ATP equipment and GSM-
R wireless communication system composition checks that system has many something in commons with the orbit occupancy of system described in the utility model, such as
Railway within the scope of CTCS-3 grades of train control systems is completely equipped with GSM-R wireless communication system, and each block section is equipped at least two
Platform transponder, vehicle-mounted ATP equipment contain Liang Tai GSM-R radio station and two transponder antennas, radio block center equipment
Inside also prestores the track data of all routes in its administrative area, block section and track section division information, transponder point
Cloth information and the corresponding characteristic information of each transponder etc. are also logical between radio block center equipment and vehicle-mounted ATP equipment
Cross with the realizing vehicle two-way communication of GSM-R wireless communication system.Therefore, partial modification appropriate is carried out to CTCS-3 grades of train control systems
(appropriate adjustment or supplement, radio block center equipment are carried out by the orbit occupancy inspection as described in this patent transponder is arranged
The function of heart equipment carries out upgrading etc.), so that it may the inspection of orbit occupancy described in this patent system function is dissolved into and is changed
Among CTCS-3 grade train control system after, the deficiencies of to make up track circuit shunting badness or red band etc..For creating work
Journey project, or even track circuit can also be cancelled, it is further simplified CTCS-3 grades of train control system structures.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (8)
1. a kind of orbit occupancy based on communication checks system, which is characterized in that check central apparatus, installation including orbit occupancy
Mobile unit ON TRAINS, the transponder being mounted near each end of track section and for mobile unit and track
It occupies and checks the communication system that communicates between central apparatus, the mobile unit includes on-vehicle host, transponder antenna and wireless
Radio station, the transponder antenna and radio station are electrically connected with on-vehicle host respectively, and the transponder antenna includes being mounted on vehicle
The first transponder antenna and the second transponder antenna positioned at the tailstock of head.
2. the orbit occupancy according to claim 1 based on communication checks system, which is characterized in that the transponder is nothing
Source transponder.
3. orbit occupancy according to claim 1 based on communication checks system, which is characterized in that the transponder and its
The distance of the nearest end of place track section is not less than the distance between transponder antenna and its ipsilateral train end.
4. the orbit occupancy according to claim 1 based on communication checks system, which is characterized in that radio station's peace
Mounted in the top of train head.
5. orbit occupancy according to claim 4 based on communication checks system, which is characterized in that the communication system with
Communication is used between the radio station, the communication system and orbit occupancy check to be used between central apparatus
Wired communication mode or wired plus wireless communication mode.
6. orbit occupancy according to claim 1 based on communication checks system, which is characterized in that the radio station is
Two, Liang Ge radio station redundancy of effort.
7. the orbit occupancy according to claim 1 based on communication checks system, which is characterized in that the orbit occupancy
Check that central apparatus and on-vehicle host are all made of hardware security redundancy structure.
8. checking system according to the described in any item orbit occupancies based on communication of claim 5 to 7, which is characterized in that described
Orbit occupancy checks that the communication between central apparatus and on-vehicle host is two-way independent communication channel, and uses two-way redundancy of effort
Mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821068300.3U CN208411757U (en) | 2018-07-06 | 2018-07-06 | A kind of orbit occupancy inspection system based on communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821068300.3U CN208411757U (en) | 2018-07-06 | 2018-07-06 | A kind of orbit occupancy inspection system based on communication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208411757U true CN208411757U (en) | 2019-01-22 |
Family
ID=65124958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821068300.3U Active CN208411757U (en) | 2018-07-06 | 2018-07-06 | A kind of orbit occupancy inspection system based on communication |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208411757U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113859316A (en) * | 2021-10-25 | 2021-12-31 | 卡斯柯信号有限公司 | Track occupation detection system and method, electronic equipment and storage medium |
| CN114454928A (en) * | 2022-01-13 | 2022-05-10 | 通号城市轨道交通技术有限公司 | Occupancy checking method and system based on radio frequency identification |
-
2018
- 2018-07-06 CN CN201821068300.3U patent/CN208411757U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113859316A (en) * | 2021-10-25 | 2021-12-31 | 卡斯柯信号有限公司 | Track occupation detection system and method, electronic equipment and storage medium |
| CN113859316B (en) * | 2021-10-25 | 2024-04-30 | 卡斯柯信号有限公司 | Track occupation detection system and method, electronic equipment and storage medium |
| CN114454928A (en) * | 2022-01-13 | 2022-05-10 | 通号城市轨道交通技术有限公司 | Occupancy checking method and system based on radio frequency identification |
| CN114454928B (en) * | 2022-01-13 | 2024-04-05 | 通号城市轨道交通技术有限公司 | Occupancy checking method and system based on radio frequency identification |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108639104A (en) | A kind of orbit occupancy inspection system based on communication | |
| CN108725520B (en) | Train operation control system suitable for low-density railway | |
| US10843713B2 (en) | Railroad train with length more than platform and its marshalling system | |
| CN111688767B (en) | Method for superposing CTCS system and CBTC system | |
| CN110356434B (en) | Light-weight train control system based on TAG positioning | |
| CN110712667B (en) | Comprehensive train control system capable of adapting to foreign requirements | |
| CN110239596A (en) | A kind of movable block Train control method and system based on CTCS-3 | |
| CN103754242A (en) | City regional railway signal system and control method thereof | |
| US20020091483A1 (en) | Procedure and system for an automatically locating and surveillance of the position of at least one track-guided vehicle | |
| CN108773393B (en) | BTM for storing messages | |
| CN108189862A (en) | A kind of modern tram operation monitoring system | |
| CN110194201A (en) | A kind of column control grade converting system and its method | |
| WO2015131661A1 (en) | Railway train having length exceeding that of platform and configuration system therefor | |
| US20210016812A1 (en) | Train control system and train control method including virtual train stop | |
| CN208411757U (en) | A kind of orbit occupancy inspection system based on communication | |
| CN113602323A (en) | Method and system for realizing train occupation and integrity check and train control by using transponder | |
| CN107264576A (en) | Suitable for the CTCS2+ATO train control systems of existing line | |
| CN112590885B (en) | Urban railway signal control system | |
| CN114454918A (en) | Method and system for improving vehicle receiving and dispatching efficiency in station | |
| CN110626392A (en) | Point type communication system of high-speed magnetic suspension track traffic | |
| CN114684222A (en) | Train control method and system based on transponder bidirectional transmission | |
| CN114348059A (en) | Route segmentation unlocking and logic processing method and system based on ad hoc network | |
| CN112896245A (en) | Medium-low traffic volume rail transit signal system | |
| Dimitrova | Analysis of automatic control systems for metro trains | |
| CN1528632A (en) | Wireless locomotive signal system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |