CN114339670A - Communication control server based on packet domain communication and system and method thereof - Google Patents
Communication control server based on packet domain communication and system and method thereof Download PDFInfo
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Abstract
The invention discloses a communication control server based on packet domain communication and a system and a method thereof, wherein the communication control server comprises: the core logic processing communication unit comprises a main processing unit for core logic processing and an information interaction communication unit with the outside; the network interaction unit is connected with the core logic processing communication unit, is respectively in communication connection with the dispatching centralized control system, the train control center and the vehicle-mounted equipment, and performs information interaction with the vehicle-mounted equipment based on a wireless network of a packet domain; the communication unit transmits the main check word to the safety supervision module, and when the safety supervision module judges that the main check word is wrong, the safety relay driver cuts off a data external transmission channel between the communication unit and the network interaction unit. The advantages are that: the communication control server performs information interaction with the outside based on the wireless network of the packet domain, does not need an additional ISDN wireless communication server, and simplifies the whole structure and cost.
Description
Technical Field
The invention relates to the field of rail transit communication, in particular to a communication control server based on Packet Switch (PS) communication, a system and a method thereof.
Background
With the opening Operation of Guanhui province and Guangfu province lines of pearl-triangle intercity railway in 2016, an intercity Train Operation control system CTCS2+ ATO (Automatic Train Operation) system is put into practical use in China formally, and the Automatic Train Operation control system applies an Automatic driving technology in the field of heavy railways for the first time, realizes Automatic control of Train Operation, and improves the automation degree and the transportation efficiency of the system.
However, the train operation control system CTCS in China at present carries out train control train-ground communication based on a circuit switched Circuit (CS) of the international wireless communication standard GSM-R for railways, and the transmission efficiency is limited. On the other hand, Integrated Services Digital Network (ISDN) communication card products have limited peripheral capacity and high price (the cost is half of the hardware cost). However, as the wireless communication technology evolves to 3G, 4G, 5G, or even 6G in an iterative manner and objective requirements for more train-ground communication services are continuously presented, the existing train control wireless communication technology is increasingly unable to meet the rapidly increasing service requirements, and meanwhile, the setting cost of the existing train control wireless communication network is also very high. In order to have better communication compatibility, meet the requirements of higher bandwidth and service expansion, lower system cost and the like, a communication control server with higher compatibility and capable of meeting higher service requirements is needed.
Disclosure of Invention
The invention aims to provide a communication control server based on packet domain communication and a system and a method thereof, wherein the communication control server combines a core logic processing communication unit and a network interaction unit, wherein the core logic processing communication unit comprises a main processing unit and a communication unit, the network interaction unit is respectively in communication connection with a dispatching centralized control system, a train control center and vehicle-mounted equipment, and performs information interaction with the vehicle-mounted equipment based on a wireless network of a packet domain, so that an additional ISDN wireless communication server is not needed, and the overall structure and the cost are simplified; meanwhile, compared with the existing server depending on a circuit domain wireless communication mechanism, the network transmission of the communication control server has the characteristic of short disconnection reconnection time, and the stability of the whole system is improved.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a packet domain communication based communication control server, comprising:
the core logic processing communication unit comprises a main processing unit and a communication unit, wherein the main processing unit is used for the core logic processing of the communication control server, and the core logic processing communication unit carries out information interaction with the outside through the communication unit;
the network interaction unit is connected with the core logic processing communication unit, is respectively in communication connection with the dispatching centralized control system, the train control center and the vehicle-mounted equipment, and performs information interaction with the vehicle-mounted equipment based on a wireless network of a packet domain; the network interaction unit is in communication connection with the communication unit, the communication unit transmits the main check word to the safety supervision module, and when the safety supervision module judges that the main check word is wrong, the safety relay driver cuts off a data external transmission channel between the communication unit and the network interaction unit.
Optionally, the main processing unit is of a dual-machine redundancy structure, and the main processing unit is used for message authentication security layer adaptation and checking authenticity, sequence integrity and timeliness of the vehicle-mounted device message.
Optionally, the main processing unit includes a first main processing module, a second main processing module, and a switching module, where the first main processing module and the second main processing module form the core logic processing communication unit, and are used for core logic processing of the communication control server, and the switching module is used for switching between a main system and a standby system of the core logic processing communication unit.
Optionally, the switching module monitors state parameters of the first main processing module and the second main processing module, and when the switching module monitors that the state parameters of the main processing unit are abnormal, another main processing module is switched to be the main processing unit.
Optionally, the communication unit includes a first communication module and a second communication module, the second communication module receives the first main processing module, the second main processing module and communication data therebetween, and outputs the communication data to be sent to the vehicle-mounted device through the network interaction unit based on the wireless network of the packet domain, and the communication data input by the vehicle-mounted device is transmitted to the second communication module through the network interaction unit based on the wireless network of the packet domain, and is further transmitted to the main processing unit;
the first communication module is used for controlling the time sequence of the communication control server, receiving the check words of each module, obtaining main check words from each check word and sending the main check words to the safety supervision module.
Optionally, when the main check word does not match the preset value, the safety supervision module determines that the main check word is wrong.
Optionally, the method further includes:
and the maintenance terminal is in communication connection with the communication unit, and diagnoses and maintains each component of the communication control server.
Optionally, the method further includes:
and the power supply module is used for supplying power to all parts of the communication control server.
Optionally, a vehicle-ground communication system includes:
the network interaction unit of the communication control server is respectively in communication connection with the dispatching centralized control system, the train control center and the vehicle-mounted equipment, and performs information interaction with the vehicle-mounted equipment based on the wireless network of the packet domain.
Optionally, a method for performing vehicle-ground communication by using the communication control server based on packet-domain communication includes:
s1, starting the communication control server to complete the startup self-check, initialization and data loading of the communication control server;
s2, the communication control server establishes safe communication connection with the vehicle-mounted equipment, the train control center and the dispatching centralized control system through the communication board card and interacts service communication data;
s3, the communication control server completes the safe communication connection with the vehicle-mounted equipment through the wireless network of the packet domain in real time, receives the registration or logout request of the vehicle-mounted equipment based on the safe network communication, and maintains the communication session state of the current registered vehicle-mounted equipment;
s4, the communication control server receives the ATO state report of the vehicle-mounted device from the current registered vehicle-mounted device and then forwards the report to the dispatching centralized control system to inform the dispatching centralized control system of the number of the registered vehicle-mounted device, the dispatching centralized control system sends the operation information of the corresponding number to the communication control server, and the communication control server analyzes and matches the operation information to the corresponding vehicle-mounted device and then sends the operation information to the corresponding vehicle-mounted device based on the packet domain wireless network.
Optionally, the method further includes:
s5, when the train stops at the station, the communication control server receives a screen door opening and closing command from the vehicle-mounted equipment through the packet domain wireless network, and checks the validity and validity of the command parameter of the received screen door command; and for the shield door command passing the inspection, the communication control server can match corresponding relay drive code bits from the offline data, encapsulates the relay drive command packet into a relay drive command packet and sends the relay drive command packet to a column control center corresponding to the shield door to be operated, and the communication control server receives the shield door relay acquisition state from the column control center, converts the shield door relay acquisition state into the corresponding shield door state and sends the shield door relay acquisition state to the vehicle-mounted equipment through the packet domain wireless network.
Optionally, the operation information includes an operation plan and return command information of the corresponding train.
Optionally, the step S1 includes:
the method comprises the following steps of starting up self-test of a communication control server, hardware initialization, Boolean logic initialization, DIV + BIT task initialization, timed interrupt task initialization and loading of offline data and configuration files;
initializing a communication control server network and a synchronous task, wherein the initialization comprises initializing a network card, writing IP and gateway addresses, and initializing related variables and functions of the synchronous task between a main system and a standby system and between CPUs;
railway signal safety protocol-I, railway signal safety protocol-II and the task initialization of the European radio system functional interface specification.
Optionally, the maintenance terminal of the communication control server records the message interaction of each step in real time, and provides history query and playback functions.
Compared with the prior art, the invention has the following advantages:
in the communication control server and the system and the method thereof based on the packet domain communication, the communication control server combines a core logic processing communication unit and a network interaction unit, wherein the core logic processing communication unit comprises a main processing unit and a communication unit, the network interaction unit is respectively in communication connection with a dispatching centralized control system, a train control center and vehicle-mounted equipment, and carries out information interaction with the vehicle-mounted equipment based on a wireless network of the packet domain, so that an additional ISDN wireless communication server is not needed, and the overall structure and the cost are simplified; meanwhile, compared with the existing server depending on a circuit domain wireless communication mechanism, the network transmission of the communication control server has the characteristic of short disconnection reconnection time, and the stability of the whole system is improved.
Furthermore, the data of each unit/module in the communication control server is relatively independent and is processed respectively, so that the data transmission quantity of the foreground and the background is greatly reduced, and the real-time performance and the accuracy of data display are ensured.
Furthermore, in the train-ground communication system comprising the communication control server, each component is in wireless network communication based on the packet domain, and is lossless and backward compatible to LTE and 5G communication technologies, so that the functions of the communication control server and the system are more expandable.
Drawings
Fig. 1 is a schematic diagram of a communication control server based on packet domain communication according to the present invention;
fig. 2 is a schematic diagram of a secure disembarkation communication architecture based on packet domain communication according to the present invention.
Detailed Description
The present invention will now be further described by way of the following detailed description of a preferred embodiment thereof, taken in conjunction with the accompanying drawings.
As shown in fig. 1 and fig. 2, the communication control server CCS based on packet-switched domain communication of the present invention is a core component of ground ATO equipment, and mainly implements wireless communication between trackside and train-mounted equipment, and implements management of door opening and closing commands of a barrier door, so as to implement management and forwarding of an operation plan. On the other hand, in the linkage execution flow of the vehicle door and the screen door, on-board equipment on the train is responsible for issuing a screen door opening and closing command, the communication control server CCS is responsible for logic execution and management functions such as storage, verification, forwarding and the like of the screen door command, and the train control center TCC is actual execution equipment of the screen door command. In the execution flow of the operation plan, the dispatch centralized control system CTC is responsible for providing the operation plan, the communication control server CCS is responsible for management functions such as storage and forwarding of the operation plan, and the vehicle-mounted device is an actual execution device of the operation plan.
As shown in fig. 1, in the present invention, the communication control server CCS based on packet domain communication mainly includes a core logic processing communication unit CCPS and a network interaction unit GGW.
Specifically, the core logic processing communication unit CCPS includes a main processing unit and a communication unit MCU, the main processing unit is configured to perform core logic processing (mainly including logic execution and management functions such as storage, verification, and forwarding of a barrier gate command) of the communication control server CCS, and the core logic processing communication unit CCPS performs information interaction with the outside through the communication unit MCU (external interface function). The network interaction unit GGW is connected with the core logic processing communication unit CCPS, the network interaction unit GGW is respectively connected with a scheduling centralized control system CTC, a train control center TCC and a vehicle-mounted device in a communication manner, and performs information interaction with the vehicle-mounted device based on a wireless network of a packet domain; the network interaction unit GGW is in communication connection with the communication unit MCU, the communication unit MCU transmits a main check word to the safety supervision module VPS, when the judgment of the main check word by the safety supervision module VPS is error, the safety supervision module VPS cuts off the output between the communication unit MCU and the network interaction unit GGW through a safety relay driver VRD, thereby cutting off the transmission channel of the communication unit MCU to the external error data, and guiding the whole system to the safety side.
In this embodiment, the main processing unit is a dual-computer redundant structure and includes two independent operation units, and the main processing unit is used for adapting to the message authentication security layer and checking the authenticity, sequence integrity and timeliness of the vehicle-mounted device message.
Specifically, the main processing unit includes a first main processing module, i.e., main processing unit 1, a second main processing module, i.e., main processing unit 2, and a switching module, i.e., switching unit, where the first main processing module and the second main processing module form a main/standby system of the core logic processing communication unit CCPS and are used for core logic processing (e.g., logic execution and management such as storage, verification, forwarding and the like of a barrier command) of the communication control server CCS. The first main processing module and the second main processing module can both comprise application software ASW and platform software BSW to complete main logic and operation functions of the communication control server CCS, and specifically comprise an application function, a safety protection function, a voting function, a monitoring function and the like of the communication control server CCS, and the functions are all completed in the first main processing module and the second main processing module at the same time to achieve a two-out-of-two function.
The switching module is used for switching the primary and secondary systems of the core logic processing communication unit CCPS, namely, dual-system primary and secondary switching. Optionally, the switching module monitors state parameters of the first main processing module and the second main processing module, and when the switching module monitors that the current state parameter of the main processing unit is abnormal, another main processing module is switched to be the main processing unit.
As shown in fig. 1, in this embodiment, the communication unit MCU includes a first communication module MCU1 and a second communication module MCU2, the second communication module MCU2 receives the first main processing module, the second main processing module and communication data therebetween, outputs the communication data to be transmitted to the outside (vehicle-mounted device) through the network interaction unit GGW based on a wireless network of a packet domain, and transmits the externally input communication data to the second communication module MCU2 through the network interaction unit GGW based on the wireless network of the packet domain, and further transmits the communication data to the main processing unit. Optionally, the communication control server CCS interacts data with the centralized scheduling control system CTC and the train control center TCC through a wired network.
The first communication module MCU1 is configured to control a timing sequence of the communications control server CCS, and the first communication module MCU1 receives check words of the modules (the first main processing module, the second main processing module, and the second communication module MCU2), and obtains a main check word from each check word, and sends the main check word to the security supervision module VPS. In practical application, the first main processing module and the second main processing module both send a plurality of sub check words (usually ten) to the first communication module MCU1, and the second communication module MCU2 is responsible for processing communication between the main processing unit and the external-internal pair and merging of dual-channel output data, and generating JTC check words to send to the first communication module MCU 1. The first communication module MCU1 generates a master check word based on the received respective check word processing calculations. The safety supervision module VPS judges the correctness of the main check word, when the main check word is not in accordance with the preset value, the safety supervision module VPS judges that the main check word is wrong, and the safety relay driver VRD cuts off a data external transmission channel between the communication unit MCU and the network interaction unit GGW.
Further, the communication control server CCS based on packet domain communication of the present invention further includes a Maintenance terminal SDMS (System diagnostics Maintenance Sub-System) communicatively connected to the second communication module MCU2 of the communication unit MCU, and the Maintenance terminal SDMS diagnoses and maintains each component of the communication control server CCS. Because the second communication module MCU2 is an external information data transmission port for a plurality of modules in the communication control server CCS, parameter information of each module of the communication control server CCS can be acquired from the second communication module MCU2, and monitoring, diagnosing and maintaining of each module are further realized.
Further, the communication control server CCS based on packet domain communication of the present invention further includes a power module, which is configured to supply power to each component of the communication control server CCS.
Based on the same inventive concept, the invention also provides a train-ground communication system, which mainly comprises the communication control server CCS, the dispatching centralized control system CTC, the train control center TCC and the vehicle-mounted equipment, wherein the communication control server CCS is based on the packet domain communication, the network interaction unit GGW of the communication control server CCS is respectively in communication connection with the dispatching centralized control system CTC, the train control center TCC and the vehicle-mounted equipment, and the wireless network based on the packet domain is in information interaction with the vehicle-mounted equipment.
As shown in fig. 1 and fig. 2 in combination, the communication control server CCS of the present invention eliminates the ISDN server, and the transport layer and the network layer are implemented by TCP/IP instead of the original ISO TP2 and t.70 protocols. The network interactive unit GGW of the present invention serves as a gateway of the CCS, receives a request from the vehicle-mounted wireless network client, and maintains the TCP connection, which fulfills the functional requirements of the lower part of the transport layer in fig. 2. The communication unit MCU completes the implementation of the adaptation and redundancy management layer (ALE) non-secure function protocol in fig. 2, and the network interaction unit GGW and the communication unit MCU together complete the communication function module. The main processing unit 1 and the main processing unit 2 finish the realization of the adaptation of the message authentication security layer and finish the check of the authenticity, the sequence integrity and the timeliness of the vehicle-mounted message by the system. According to the technical scheme, the vehicle-mounted equipment is directly connected with the server gateway network interaction unit GGW, the structures and the costs of the server and the system are simplified, the network throughput can reach 4KB/S under the condition that each packet of data has the size of 500 bytes in the GPRS network environment through testing, and the network transmission is greatly superior to the network transmission under the circuit domain communication condition.
Based on the same inventive concept, the invention also provides a method for performing vehicle-ground communication by adopting the communication control server CCS based on the packet domain communication, which comprises the following steps:
and S1, starting the communication control server CCS, and completing power-on self-test, initialization and data loading of the communication control server CCS.
In this embodiment, the step S1 includes:
s11, carrying out CCS power-on self-test, hardware initialization, Boolean logic initialization, DIV + BIT (built-in self-test under different architectures) task initialization, timed interrupt task initialization, off-line data and configuration file loading and the like on the communication control server;
s12, communication control server CCS network and synchronous task initialization, which includes initializing network card, IP and gateway address writing, and initializing related variables and functions of synchronous task between main and standby systems and CPU;
and S13, railway signal safety protocol-I (interface with train control center TCC), railway signal safety protocol-II (interface with dispatching centralized control system CTC), European radio system functional interface specification Subset037 (interface with vehicle-mounted equipment) and other tasks are initialized. In order to guarantee communication security, when the communication control server CCS communicates with the outside, a security protocol is used to guarantee transmission, so as to prevent delay, disguise, disorder or insertion of network data.
And S2, the communication control server CCS establishes a safe communication connection with the vehicle-mounted equipment, the train control center TCC and the dispatching centralized control system CTC through the communication board card and interacts service communication data.
S3, the communication control server CCS completes the safe communication connection with the vehicle-mounted equipment through the wireless network GSM-R (LTE Long Term Evolution) of the packet domain in real time, receives the registration or logout request of the vehicle-mounted equipment based on the safe network communication, and maintains the communication session state of the current registered vehicle-mounted equipment.
S4, the communication control server CCS receives an ATO state report of the train from the current registered vehicle-mounted device and then forwards the report to the dispatching centralized control system CTC, the dispatching centralized control system CTC is informed of the train number of the registered vehicle-mounted device, the dispatching centralized control system CTC sends operation information of the corresponding train number to the communication control server CCS, and the communication control server CCS analyzes and matches the operation information to the corresponding vehicle-mounted device and then sends the operation information to the corresponding vehicle-mounted device based on the packet domain wireless network. Optionally, the operation information includes information such as an operation plan and a return command of the corresponding train, and of course, the operation information is not limited to include the above example.
Further, the method for performing vehicle-to-ground communication by using the packet domain communication-based communication control server CCS of the present invention further comprises: s5, when the train stops at the station, the communication control server CCS receives a screen door switch command from the vehicle-mounted equipment through the packet domain wireless network, and checks the validity and validity of the command parameter of the received screen door command; for the shield door command passing the inspection, the communication control server CCS can match corresponding relay drive code bits from the offline data, encapsulates the relay drive command packet into a relay drive command packet and sends the relay drive command packet to a column control center TCC corresponding to the shield door to be operated, and the communication control server CCS receives the shield door relay acquisition state from the column control center TCC, converts the shield door relay acquisition state into the corresponding shield door state and sends the shield door relay acquisition state to the vehicle-mounted equipment through a packet domain wireless network.
In the process of each step, the DIV + BIT can detect the CPU, the off-line storage file and the memory of the CCS in real time; on the other hand, the maintenance terminal SDMS of the communication control server CCS interactively records the messages of the respective steps (mainly, S2 to S5) in real time, and provides a history inquiry and playback function. Maintaining the terminal SDMS and providing a station yard graphic display interface, and clearly and definitely displaying the states of the on-line vehicle-mounted equipment and the shielding door; and the graphical display interface displays the communication connection state of the external equipment in real time and intuitively reflects the running state of the equipment.
From the above, the overall process of the method of the invention includes the processing processes of off-line configuration reading, hardware and network task initialization, security detection technology initialization and processing, shielding door opening and closing command management, operation plan management, application layer message interaction with external devices (a scheduling centralized control system (CTC), a Train Control Center (TCC) and vehicle-mounted devices), maintenance and diagnosis information processing and the like.
In summary, in the communication control server CCS and the system and method thereof based on packet domain communication provided by the present invention, the communication control server CCS combines a core logic processing communication unit CCPS and a network interaction unit GGW, etc., wherein the core logic processing communication unit CCPS includes a main processing unit and a communication unit MCU, the network interaction unit GGW is respectively in communication connection with a scheduling centralized control system CTC, a train control center TCC and a vehicle-mounted device, and performs information interaction with the vehicle-mounted device based on a wireless network of a packet domain, without an additional ISDN wireless communication server, thereby simplifying the overall structure and cost; meanwhile, compared with the existing server depending on a circuit domain wireless communication mechanism, the network transmission of the communication control server CCS has the characteristic of short disconnection reconnection time, and the stability of the whole system is improved.
Furthermore, the data of each unit/module in the communication control server CCS are relatively independent and are processed respectively, so that the data transmission amount of the foreground and the background is greatly reduced, and the real-time performance and the accuracy of data display are ensured.
Furthermore, in the train-ground communication system comprising the communication control server CCS, each component is based on wireless network communication of a packet domain, and is lossless and backward compatible to LTE and 5G communication technologies, so that the functions of the communication control server CCS and the system have better expandability.
While the present invention has been described in detail with reference to the preferred embodiments, it should be understood that the above description should not be taken as limiting the invention. Various modifications and alterations to this invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be determined from the following claims.
Claims (14)
1. A communication control server based on packet domain communication, comprising:
the core logic processing communication unit comprises a main processing unit and a communication unit, wherein the main processing unit is used for the core logic processing of the communication control server, and the core logic processing communication unit carries out information interaction with the outside through the communication unit;
the network interaction unit is connected with the core logic processing communication unit, is respectively in communication connection with the dispatching centralized control system, the train control center and the vehicle-mounted equipment, and performs information interaction with the vehicle-mounted equipment based on a wireless network of a packet domain; the network interaction unit is in communication connection with the communication unit, the communication unit transmits the main check word to the safety supervision module, and when the safety supervision module judges that the main check word is wrong, the safety relay driver cuts off a data external transmission channel between the communication unit and the network interaction unit.
2. The packet domain communication based communication control server according to claim 1,
the main processing unit is of a dual-machine redundancy structure and is used for message authentication security layer adaptation and checking authenticity, sequence integrity and timeliness of vehicle-mounted equipment messages.
3. The packet domain communication based communication control server according to claim 1 or 2,
the main processing unit comprises a first main processing module, a second main processing module and a switching module, wherein the first main processing module and the second main processing module form a main system and a standby system of the core logic processing communication unit and are used for core logic processing of the communication control server, and the switching module is used for switching the main system and the standby system of the core logic processing communication unit.
4. The packet domain communication based communication control server according to claim 3,
the switching module monitors state parameters of the first main processing module and the second main processing module, and when the switching module monitors that the state parameters of the main system processing unit are abnormal, the other main processing module is switched to be the main system processing unit.
5. The packet domain communication based communication control server according to claim 3,
the communication unit comprises a first communication module and a second communication module, the second communication module receives the first main processing module, the second main processing module and communication data between the first main processing module and the second main processing module, the communication data to be sent are output to the vehicle-mounted equipment through the network interaction unit based on the wireless network of the packet domain, and the communication data input by the vehicle-mounted equipment are transmitted to the second communication module through the network interaction unit based on the wireless network of the packet domain and then transmitted to the main processing unit;
the first communication module is used for controlling the time sequence of the communication control server, receiving the check words of each module, obtaining main check words from each check word and sending the main check words to the safety supervision module.
6. The packet domain communication based communication control server according to claim 1 or 5,
and when the main check word does not accord with the preset value, the safety supervision module judges that the main check word is wrong.
7. The packet domain communication-based communication control server according to claim 1, further comprising:
and the maintenance terminal is in communication connection with the communication unit, and diagnoses and maintains each component of the communication control server.
8. The packet domain communication-based communication control server according to claim 1, further comprising:
and the power supply module is used for supplying power to all parts of the communication control server.
9. A vehicle-to-ground communication system, comprising:
the communication control server based on packet switched domain communication according to any one of claims 1 to 8, wherein a network interaction unit of the communication control server is in communication connection with the dispatch centralized control system, the train control center and the vehicle-mounted device respectively, and performs information interaction with the vehicle-mounted device based on a wireless network of the packet switched domain.
10. A method for performing vehicle-ground communication by using the communication control server based on packet domain communication according to any claim 1 to 8, comprising:
s1, starting the communication control server to complete the startup self-check, initialization and data loading of the communication control server;
s2, the communication control server establishes safe communication connection with the vehicle-mounted equipment, the train control center and the dispatching centralized control system through the communication board card and interacts service communication data;
s3, the communication control server completes the safe communication connection with the vehicle-mounted equipment through the wireless network of the packet domain in real time, receives the registration or logout request of the vehicle-mounted equipment based on the safe network communication, and maintains the communication session state of the current registered vehicle-mounted equipment;
s4, the communication control server receives the ATO state report of the vehicle-mounted device from the current registered vehicle-mounted device and then forwards the report to the dispatching centralized control system to inform the dispatching centralized control system of the number of the registered vehicle-mounted device, the dispatching centralized control system sends the operation information of the corresponding number to the communication control server, and the communication control server analyzes and matches the operation information to the corresponding vehicle-mounted device and then sends the operation information to the corresponding vehicle-mounted device based on the packet domain wireless network.
11. The method for vehicle-to-ground communication using the packet domain communication based communication control server according to claim 10, further comprising:
s5, when the train stops at the station, the communication control server receives a screen door opening and closing command from the vehicle-mounted equipment through the packet domain wireless network, and checks the validity and validity of the command parameter of the received screen door command; and for the shield door command passing the inspection, the communication control server can match corresponding relay drive code bits from the offline data, encapsulates the relay drive command packet into a relay drive command packet and sends the relay drive command packet to a column control center corresponding to the shield door to be operated, and the communication control server receives the shield door relay acquisition state from the column control center, converts the shield door relay acquisition state into the corresponding shield door state and sends the shield door relay acquisition state to the vehicle-mounted equipment through the packet domain wireless network.
12. The method for vehicular communication using the packet domain communication based communication control server according to claim 10,
the operation information includes operation plan and turn-back command information of the corresponding train.
13. The method for vehicle-to-ground communication using the packet domain communication-based communication control server according to claim 10, wherein the step S1 comprises:
the method comprises the following steps of starting up self-test of a communication control server, hardware initialization, Boolean logic initialization, DIV + BIT task initialization, timed interrupt task initialization and loading of offline data and configuration files;
initializing a communication control server network and a synchronous task, wherein the initialization comprises initializing a network card, writing IP and gateway addresses, and initializing related variables and functions of the synchronous task between a main system and a standby system and between CPUs;
railway signal safety protocol-I, railway signal safety protocol-II and the task initialization of the European radio system functional interface specification.
14. The method for vehicular communication using the packet domain communication based communication control server according to claim 10,
and the maintenance terminal of the communication control server records the message interaction of each step in real time and provides history inquiry and playback functions.
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| KR102641189B1 (en) * | 2023-05-25 | 2024-02-27 | 시엔디컨버전스 주식회사 | A wireless communication method between platform screen door and train |
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2021
- 2021-12-24 CN CN202111598152.2A patent/CN114339670A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102641189B1 (en) * | 2023-05-25 | 2024-02-27 | 시엔디컨버전스 주식회사 | A wireless communication method between platform screen door and train |
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