CN109547465A - The secure transmission systems of the double verifyings of information dynamic collection between a kind of Railways Stations - Google Patents
The secure transmission systems of the double verifyings of information dynamic collection between a kind of Railways Stations Download PDFInfo
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- CN109547465A CN109547465A CN201811543779.6A CN201811543779A CN109547465A CN 109547465 A CN109547465 A CN 109547465A CN 201811543779 A CN201811543779 A CN 201811543779A CN 109547465 A CN109547465 A CN 109547465A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
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Abstract
The secure transmission systems of the double verifyings of information dynamic collection between a kind of Railways Stations, it include input-output unit and main control unit, main control unit has respectively included two microprocessors, input-output unit has respectively included Acquisition Circuit and driving circuit, Acquisition Circuit acquires relay status information, two microprocessors are respectively equipped with dynamic acquisition unit, two dynamic acquisition units carry out enabling pulse to Acquisition Circuit respectively, the back production information to relay is fed back to two microprocessors by Acquisition Circuit simultaneously, the status information that analytic operation obtains relay is carried out according to enabled and back production data, the main control unit that status information passes through optical channel transmission to adjacent sites, two microprocessors of adjacent sites carry out analytic operation to the status information received, determining whether driving circuit exports according to analytic operation result can drive adjacent sites to execute relay It is required that circuit.Above system uses dynamic information collection, and has the function of self-test to the information of acquisition and mutually examine, and improves the safety of information transmission.
Description
Technical field
The present invention relates to a kind of rail traffic field of information transmission, especially in railway respectively stand between information dynamic acquisition and
Double verifying secure transmission systems.
Background technique
China part railway uses relay Semiautomatic block system, it is realized using the logical relation of relay circuit
The connection of separation, the common level signal for picking up generation using make-busy relay are occluded as information carrier by cable transmission
The repeaterless transmission of the status information of system, the system is indifferent, is easy the interference by external environment, affects route
Security performance and operation efficiency have developed using semiautomatic block information between fiber channel transfer station, improve the dry of channel transfer
Disturb ability and efficiency of operation.
But largely without monitoring and verification setting, therefore, each area in the transmission device between existing each shuttle train
Between train operation information in acquisition, there are deviations and incipient fault for data security in transmission process.
Summary of the invention
In view of the above situation, it is necessary to which information between the Railways Stations that one kind can be examined to the progress self-test of the information of acquisition and mutually is provided
The secure transmission system of the double verifyings of dynamic acquisition.
In order to solve the above technical problems, a kind of secure transmission systems of the double verifyings of information dynamic collection between Railways Stations are provided,
It is used to the relay status information of preceding website being transmitted to adjacent sites and decides whether the execution relay to adjacent sites
The instruction of corresponding state is executed, two adjacent sites are respectively equipped with an information transmission equipment, each information transmission equipment difference
It include an input-output unit, a main control unit and a UFIU UMSC Fiber Interface Unit, each main control unit has respectively included first
Microprocessor and the second microprocessor, each input-output unit have respectively included an Acquisition Circuit and one drive circuit,
The Acquisition Circuit acquires relay status information, and the first microprocessor and the second microprocessor are respectively equipped with a dynamic and adopt
Collect unit and information detecting unit, the two dynamic acquisition units carry out enabling pulse, while institute to the Acquisition Circuit respectively
It states Acquisition Circuit and the back production information to relay is fed back into the first microprocessor and the second microprocessor, described first is micro-
The information detecting unit in processor connects second microprocessor and carries out infomation detection to it, second micro- place
The information detecting unit in reason device connects the first microprocessor and carries out infomation detection, first micro process to it
Device and the second microprocessor enabled will carry out analytic operation with back production data, show that the state of relay is believed according to analytic operation
The status information of relay is transmitted to phase by the UFIU UMSC Fiber Interface Unit by breath, the first microprocessor and the second microprocessor
The UFIU UMSC Fiber Interface Unit of neighbors, then it is transmitted to the master control list at station by the UFIU UMSC Fiber Interface Unit of adjacent sites
Member, the main control unit for receiving the status information of the relay pass through the first microprocessor and the second microprocessor in it
Analytic operation is carried out to the status information received, determining whether the driving circuit exports according to analytic operation result can drive
Dynamic adjacent sites execute the requirement circuit of relay.
Between aforementioned present invention Railways Stations in the secure transmission system of the double verifyings of information dynamic collection, first micro process
By enabled data and back production data progress analytic operation, it is high electric for defining relay when having signal input for device and the second microprocessor
It is flat, it is low level when relay no signal inputs；
It is enabled when the dynamic acquisition unit sends high level to the Acquisition Circuit, when relay has signal input, such as
The Acquisition Circuit is high level to the back production information of relay, then both positive logic each other；
When the dynamic acquisition unit, which sends low level to the Acquisition Circuit, to be enabled, when relay has signal input,
If the Acquisition Circuit is low level to the back production information of relay, then both negative logic each other；
Collected positive logic signal and negated negative logic signal are sent to corresponding by the dynamic acquisition unit
It at the first microprocessor and the second microprocessor and mutually carries out and logical operation, when being true with logic operation result
When (1), then be judged as that relay has signal input, when with logic operation result be fictitious time (0), then be judged as relay no signal
Input or the Acquisition Circuit failure.
Between aforementioned present invention Railways Stations in the secure transmission systems of the double verifyings of information dynamic collection, adjacent sites it is described
Main control unit carries out analytic operation, phase to the status information received by first microprocessor in it and the second microprocessor
The driving circuit of neighbors is equipped with a fixed frequency pulse, and the first microprocessor of adjacent sites and the second microprocessor connect
When the information received is that next stop relay has signal input, then generates and meet the one of the fixed frequency pulse height electricity alternateed
Ordinary mail number is to drive the driving circuit, when the information that the first microprocessor of adjacent sites and the second microprocessor receive
When inputting for next stop relay no signal, then the identical low and high level signal that cannot drive the driving circuit is generated.
Between aforementioned present invention Railways Stations in the secure transmission system of the double verifyings of information dynamic collection, the Acquisition Circuit is
Multichannel can cause to acquire message interrupts per Acquisition Circuit failure all the way.
Between aforementioned present invention Railways Stations in the secure transmission system of the double verifyings of information dynamic collection, the driving circuit is
Multichannel can cause output signal to be interrupted per Acquisition Circuit failure all the way.
Between aforementioned present invention Railways Stations in the secure transmission system of the double verifyings of information dynamic collection, first micro process
Device and the second microprocessor are connect with monitoring unit respectively, and Acquisition Circuit fault message is sent to equipment shape by the monitoring unit
State monitors system.
Between aforementioned present invention Railways Stations in the secure transmission system of the double verifyings of information dynamic collection, each information is passed
Transfer device has respectively included a communication unit, and the communication unit transports the first microprocessor and the second microprocessor analysis
The status information of the relay of calculation is encoded, and generates an encoded information and the encoded information is transmitted to described in adjacent sites
Communication unit, the communication unit of adjacent sites receive the encoded information number and are decoded to obtain correct relay of setting out in advance to make arrangements
Status information, and by the status information of the relay send with station the main control unit.
Between aforementioned present invention Railways Stations in the secure transmission systems of the double verifyings of information dynamic collection, each website it is described
Information transmission equipment is respectively two sets, and two information transmission equipments are connected in parallel with relay and execution relay respectively.
Between aforementioned present invention Railways Stations in the secure transmission systems of the double verifyings of information dynamic collection, each website it is described
Main control unit distinguishes the communication unit connection of the information transmission equipment connected in parallel.
Between aforementioned present invention Railways Stations in the secure transmission system of the double verifyings of information dynamic collection, the execution relay
Including always executing relay (ZZJ), two first point of execution relay (ZJI) being connected in parallel with each other and second point of execution relay
(ZJII), the two first point of execution relay (ZJI) being connected in parallel with each other and second point of execution relay (ZJII) difference
It is connect with each input-output unit.
The secure transmission system of the double verifyings of information dynamic collection, defeated by dual master control unit and dual input between above-mentioned Railways Stations
Unit is respectively acquired next stop relay information and whether determines that neighbor stations are executed with relay carries out executing order behaviour out
Make, main control unit acquires the Acquisition Circuit of input-output unit by two microprocessors, by sending to Acquisition Circuit dynamic
Enabling pulse and the back production information for receiving Acquisition Circuit, verify next stop relay by comparing and analyzing the two information
Status information, the input signal that the main control unit of neighbor stations is sent by receiving next stop main control unit pass through double micro- places in it
After reason device analyzes the input signal, decide whether that generating ALT pulse signal executes and set out in advance to make arrangements to drive neighbor stations to execute relay
The locked consistent state of relay.
Detailed description of the invention
Fig. 1 is the structural block diagram of the double secure transmission systems verified of information dynamic collection between Railways Stations of the present invention.
Fig. 2 is another example structure side in the secure transmission systems of the double verifyings of information dynamic collection between Railways Stations of the present invention
Block diagram.
Fig. 3 is main control unit structure box in the secure transmission systems of the double verifyings of information dynamic collection between Railways Stations of the present invention
Figure.
Fig. 4 is input-output unit structure in the secure transmission systems of the double verifyings of information dynamic collection between Railways Stations of the present invention
Block diagram.
Fig. 5 is driving circuit output circuit in the secure transmission systems of the double verifyings of information dynamic collection between Railways Stations of the present invention
Figure.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The secure transmission system of the double verifyings of information dynamic collection is further elaborated between Railways Stations of the present invention.It should be appreciated that this
Place is described, and specific examples are only used to explain the present invention, is not intended to limit the present invention.
Referring to Figure 1, Fig. 3 and Fig. 4, the safety of the double verifyings of information dynamic collection between a kind of Railways Stations of the embodiment of the present invention
Transmission system is used to for the relay status information of preceding website being transmitted to adjacent sites and decides whether to execute adjacent sites
Relay executes the instruction of corresponding state, as shown in Figure 1, preceding website is in scheme for first station, neighbor stations in scheme for second station,
Two adjacent sites are respectively equipped with an information transmission equipment, and each information transmission equipment has respectively included an input-output unit and one
Main control unit, each main control unit have respectively included first microprocessor and the second microprocessor, each input-output unit point
It does not include an Acquisition Circuit and one drive circuit, Acquisition Circuit is for acquiring next stop relay status information, than if any example vehicle
Ready signal, example vehicle confirmation signal, example vehicle application signal, example vehicle handle signal or example vehicle outbound signaling, first microprocessor and
Second microprocessor is respectively equipped with a dynamic acquisition unit and information detecting unit, and two dynamic acquisition units are respectively to Acquisition Circuit
Carry out enabling pulse, obtain an enabled data, at the same Acquisition Circuit to first microprocessor and the second microprocessor send one after
The back production information of electrical appliance state information, the back production information are recorded as another data, and first microprocessor and the second microprocessor will
The data and back production data that enabling pulse obtains carry out analytic operation, show that the state of next stop relay is believed according to analytic operation
It ceases, the information detecting unit in first microprocessor connects the second microprocessor and carries out infomation detection, the second micro process to it
Information detecting unit in device connects first microprocessor and carries out infomation detection, first microprocessor and the second micro process to it
To the information received, specific detection information can be the detection information that device is sent each other by the information detecting unit in it
Dynamic pulse information, is detected by fixed frequency；
The status information of relay is transmitted to adjacent by first microprocessor and the second microprocessor by UFIU UMSC Fiber Interface Unit
The UFIU UMSC Fiber Interface Unit of website, then it is transmitted to the main control unit at station by the UFIU UMSC Fiber Interface Unit of adjacent sites, receive the relay
The main control unit of the status information of device is by first microprocessor in it and the second microprocessor to the status information received
Analytic operation is carried out, determining whether driving circuit exports according to analytic operation result can drive adjacent sites to execute relay
It is required that circuit.
Between a kind of Railways Stations of the embodiment of the present invention in the secure transmission system of the double verifyings of information dynamic collection, first is micro-
Enabled data and back production data are carried out analytic operation by processor and the second microprocessor, make a concrete analysis of operation are as follows: first define after
Electric appliance is high level, i.e. output valve=1 when having signal input, is low level, i.e. output valve=0 when relay no signal inputs；
When dynamic acquisition unit sends Acquisition Circuit, high level is enabled, i.e., enabled value=1, relay has signal input
When, if Acquisition Circuit is high level, i.e. back production value=1 to the back production information of relay, then both positive logic each other；
When dynamic acquisition unit sends Acquisition Circuit, low level is enabled, i.e., enabled value=0, relay has signal input
When, if Acquisition Circuit is low level, i.e. back production value=0 to the back production information of relay, then both negative logic each other；
Collected positive logic signal and negated negative logic signal are sent to corresponding first by dynamic acquisition unit
It carries out at microprocessor and the second microprocessor and mutually and logical operation, logical operation is also known as Boolean calculation, work as the two
With logic operation result be true when, i.e.,
Back production value=1 that enabled value and (with) is negated, then be judged as that next stop relay has signal input；
What it is when the two is fictitious time with logic operation result, i.e.,
Back production value=0 that enabled value and (with) is negated then is judged as the input of next stop relay no signal or Acquisition Circuit event
Barrier.
As shown in Figure 1 and Figure 4, the main control unit of adjacent sites passes through the first microprocessor and the second microprocessor in it
Analytic operation is carried out to the status information received；The driving circuit of adjacent sites is equipped with a fixed frequency pulse, works as neighbor stations
When the information that receives of first microprocessor and the second microprocessor of point is that next stop relay has signal input, then adjacent sites
First microprocessor and the second microprocessor generate and meet the one of the fixed frequency pulse low and high level signal that alternates and use
To drive driving circuit, for example, being high level when first microprocessor is raw, that is, 1 value is exported, the second microprocessor then generates low electricity
It is flat, that is, 0 value is exported, respectively when the information that the first microprocessor of adjacent sites and the second microprocessor receive is next stop relay
When device no signal inputs, then the identical low and high level signal that cannot drive driving circuit is generated, for example generate high level simultaneously,
1 value is exported, or generates low level simultaneously, that is, exports 0 value, these situations cannot drive the driving circuit of adjacent sites defeated
Out, i.e., the execution relay of adjacent sites cannot be made to execute operation.
When first microprocessor and the second microprocessor are connect with monitoring unit respectively, monitoring unit is by Acquisition Circuit failure
Information is sent to equipment Condition Monitoring System, as described above, the identical low and high level signal that cannot drive driving circuit is generated,
For example generate high level simultaneously, that is, 1 value is exported, or generate low level simultaneously, that is, export 0 value, these situations cannot drive phase
The driving circuit of neighbors exports, and such case is possible to that prison can be passed through at this moment for driving circuit or main control unit hardware fault
It surveys unit and the situation is fed back into equipment Condition Monitoring System.
Between a kind of Railways Stations of the embodiment of the present invention in the secure transmission system of the double verifyings of information dynamic collection, acquisition electricity
Road is set as multi pass acquisition circuit, for example each input-output unit plate is configured 8 tunnel Acquisition Circuits, which is set as
Failure-safety circuit, the failure of either component can lead to the interruption of the input information pulse of Acquisition Circuit in circuit.
Between a kind of Railways Stations of the embodiment of the present invention in the secure transmission system of the double verifyings of information dynamic collection, driving electricity
Road is set as multichannel, for example each input-output unit plate is configured No. 4 driving circuits, which drives
Dynamic circuit be constructed by AC/DC switch technology and by two microcontrollers in a manner of with logical operation co- controlling
Failure-safety circuit, the failure of any component can cause output circuit without output in circuit；As shown in figure 5, driving electricity
Miniature relay two point series system can be used in the output on road, to guarantee to execute the safety of the actuating of relay, specifically: it stands
Between the output of security information transmission device always execute relay ZZJ using safety-type inclined grade relay JPXC-1000, be the by I
One group of upper contact of one point of execution relay ZJ I and II be second point of execution relay ZJ II one group of upper contact it is in parallel after, connect
Enter total energized circuit for executing relay ZZJ, since the information transmission equipment between each station is two sets, and is connected in parallel, as long as
The driving circuit of a set of information transmission equipment can work normally, and whole equipment can work normally；Two sets of information transmission equipments
Main control unit drives total execution relay ZZJ in a manner of or operation, as long as there is a system to send out total work for executing relay ZZJ
If making power supply, total relay ZZJ that executes will be picked up execution.Only when the driving circuit in two sets of information transmission equipments is equal
Total operating voltage for executing relay ZZJ is not sent out, and total relay ZZJ that executes can just fall, not be performed；When two sets of information pass
A set of normal work in transfer device, and it is another set of after fault restoration, it can be by reading normal a set of information transmission equipment
Online normal operation input after state.
As shown in Fig. 2, the double safe transmission systems verified of information dynamic collection between a kind of Railways Stations of the embodiment of the present invention
In system, each information transmission equipment has respectively included a communication unit, and communication unit is by first microprocessor and the second micro process
The data of device analytic operation are encoded, and encoded information is transmitted to the communication unit of adjacent sites.
The information transmission equipment of each website is respectively two sets, two information transmission equipments respectively with relay and execute relay
Device is connected in parallel；The main control unit of each website distinguishes the communication unit connection of information transmission equipment connected in parallel.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above are modified or are modified
It is right according to the technical essence of the invention for the equivalent embodiment of equivalent variations, but without departing from the technical solutions of the present invention
Any simple modification, equivalent change and modification made by above embodiments, all of which are still within the scope of the technical scheme of the invention.
Claims (10)
1. the secure transmission system of the double verifyings of information dynamic collection, is used for the relay status of preceding website between a kind of Railways Stations
Information is transmitted to adjacent sites and decides whether the instruction for executing relay and executing corresponding state to adjacent sites, two neighbor stations
Point is respectively equipped with an information transmission equipment, and each information transmission equipment has respectively included an input-output unit, a master control
Unit and a UFIU UMSC Fiber Interface Unit, it is characterised in that:
Each main control unit has respectively included first microprocessor and the second microprocessor, each input-output unit
An Acquisition Circuit and one drive circuit are respectively included, the Acquisition Circuit acquires relay status information, first micro- place
Reason device and the second microprocessor are respectively equipped with a dynamic acquisition unit and information detecting unit, the two dynamic acquisition unit difference
Enabling pulse is carried out to the Acquisition Circuit, while the back production information to relay is fed back to described first by the Acquisition Circuit
Microprocessor and the second microprocessor, the information detecting unit in the first microprocessor connect second micro process
Device simultaneously carries out infomation detection to it, and the information detecting unit in second microprocessor connects the first microprocessor
And infomation detection, the first microprocessor and the second microprocessor are carried out to it, enabled and back production data are subjected to analysis fortune
It calculates, is obtained the status information of relay, the first microprocessor and the second microprocessor by relay according to analytic operation
Status information is transmitted to the UFIU UMSC Fiber Interface Unit of adjacent sites, then the light by adjacent sites by the UFIU UMSC Fiber Interface Unit
Interface unit is transmitted to it with the main control unit at station, and the main control unit for receiving the status information of the relay passes through
First microprocessor and the second microprocessor in it carry out analytic operation to the status information received, according to analytic operation knot
Fruit come determine the driving circuit whether export can drive adjacent sites execute relay requirement circuit.
2. the secure transmission system of the double verifyings of information dynamic collection between Railways Stations as described in claim 1, it is characterised in that: institute
It states first microprocessor and the second microprocessor and enabled data and back production data is subjected to analytic operation, defining relay has signal
It is high level when input, is low level when relay no signal inputs；
It is enabled when the dynamic acquisition unit sends high level to the Acquisition Circuit, it is such as described when relay has signal input
Acquisition Circuit is high level to the back production information of relay, then both positive logic each other；
When the dynamic acquisition unit, which sends low level to the Acquisition Circuit, to be enabled, when relay has signal input, such as institute
Stating Acquisition Circuit is low level to the back production information of relay, then both negative logic each other；
Collected positive logic signal and negated negative logic signal are sent to corresponding described by the dynamic acquisition unit
It at first microprocessor and the second microprocessor and mutually carries out and logical operation, when being true with logic operation result
(1), then it is judged as that relay has signal input, when being fictitious time (0) with logic operation result, is then judged as that relay no signal is defeated
Enter or the Acquisition Circuit failure.
3. the secure transmission system of the double verifyings of information dynamic collection between Railways Stations as described in claim 1, it is characterised in that: phase
The main control unit of neighbors by first microprocessor in it and the second microprocessor to the status information received into
Row analytic operation, the driving circuits of adjacent sites are equipped with a fixed frequency pulse, the first microprocessor of adjacent sites and
When the information that second microprocessor receives is that next stop relay has signal input, then the phase for meeting fixed frequency pulse is generated
Mutually alternate low and high level signal is to drive the driving circuit, when the first microprocessor and the second micro process of adjacent sites
When the information that device receives is that relay no signal in next stop inputs, then the identical height that cannot drive the driving circuit is generated
Level signal.
4. the secure transmission system of the double verifyings of information dynamic collection between Railways Stations as claimed in claim 3, it is characterised in that: institute
Stating Acquisition Circuit is multichannel, can cause to acquire message interrupts per Acquisition Circuit failure all the way.
5. the secure transmission system of the double verifyings of information dynamic collection between Railways Stations as claimed in claim 3, it is characterised in that: institute
Stating driving circuit is multichannel, can output signal be caused to be interrupted per Acquisition Circuit failure all the way.
6. the secure transmission system of the double verifyings of information dynamic collection, feature exist between Railways Stations as claimed in claim 2 or claim 3
In: the first microprocessor and the second microprocessor are connect with monitoring unit respectively, and the monitoring unit is former by Acquisition Circuit
Barrier information is sent to equipment Condition Monitoring System.
7. the secure transmission system of the double verifyings of information dynamic collection between Railways Stations as described in claim 1, it is characterised in that: every
One information transmission equipment has respectively included a communication unit, and the communication unit is micro- by the first microprocessor and second
The status information of the relay of processor analytic operation is encoded, and generates an encoded information and the encoded information is transmitted to phase
The communication unit of neighbors, the communication unit of adjacent sites, which receives the encoded information number and is decoded, is set out in advance to make arrangements
The status information of correct relay, and the status information of the relay is sent into the main control unit with station.
8. the secure transmission system of the double verifyings of information dynamic collection between Railways Stations as described in claim 1, it is characterised in that: every
The information transmission equipment of one website is respectively two sets, two information transmission equipments respectively with relay and execute relay
It is connected in parallel.
9. the secure transmission system of the double verifyings of information dynamic collection between Railways Stations as claimed in claim 7, it is characterised in that: every
The main control unit of one website distinguishes the communication unit connection of the information transmission equipment connected in parallel.
10. the secure transmission system of the double verifyings of information dynamic collection between Railways Stations as claimed in claim 9, it is characterised in that:
The execution relay includes total executing relay (ZZJ), two first point of execution relay (ZJI) being connected in parallel with each other and the
Two points of execution relays (ZJII), the two first point of execution relay (ZJI) being connected in parallel with each other and second point execute after
Electric appliance (ZJII) is connect with each input-output unit respectively.
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| CN201811543779.6A CN109547465B (en) | 2018-12-17 | 2018-12-17 | Safety transmission system for dynamic information acquisition and double verification between railway stations |
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| CN201811543779.6A CN109547465B (en) | 2018-12-17 | 2018-12-17 | Safety transmission system for dynamic information acquisition and double verification between railway stations |
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| CN113820987A (en) * | 2021-09-22 | 2021-12-21 | 卡斯柯信号(郑州)有限公司 | Safe driving and mining system and driving and mining method in field of rail transit |
| CN114275013A (en) * | 2021-11-29 | 2022-04-05 | 国能朔黄铁路发展有限责任公司 | Automatic block system, automatic block control method and device |
| CN114821952A (en) * | 2021-01-19 | 2022-07-29 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Protection alarm method and system for vacuum pipeline control system |
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| CN113820987A (en) * | 2021-09-22 | 2021-12-21 | 卡斯柯信号(郑州)有限公司 | Safe driving and mining system and driving and mining method in field of rail transit |
| CN114275013A (en) * | 2021-11-29 | 2022-04-05 | 国能朔黄铁路发展有限责任公司 | Automatic block system, automatic block control method and device |
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