CN117302299A - Method, device and storage medium for switching system of vehicle-mounted equipment of urban railway - Google Patents
Method, device and storage medium for switching system of vehicle-mounted equipment of urban railway Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L15/00—Indicators provided on the vehicle or vehicle train for signalling purposes ; On-board control or communication systems
- B61L15/0063—Multiple on-board control systems, e.g. "2 out of 3"-systems
Abstract
The application provides a method, a device and a storage medium for switching system of vehicle-mounted equipment of a city railway. The method comprises the following steps: the method comprises the steps that a first-system vehicle-mounted host and a second-system vehicle-mounted host are used for respectively sending output instructions of switching control to a switching unit, so that the switching unit responds to the output instructions to determine the vehicle-mounted host in a main control state at present; transmitting an output instruction of the vehicle-mounted host computer in the current master control state to the vehicle, and transmitting stoping information of a vehicle control mode of the vehicle-mounted host computer in the current master control state to the vehicle-mounted host computer in the first mode and the vehicle-mounted host computer in the second mode; and controlling the vehicle to run on the rail of the urban railway by using the output instruction of the vehicle-mounted host computer in the current master control state. The switching process is simple, the operation is easy, the fault link is reduced, the safety of the system is ensured, and meanwhile, the reliability and the stability of the system are improved.
Description
Technical Field
The present disclosure relates to the field of rail traffic control systems, and in particular, to a method and an apparatus for switching system of a vehicle-mounted device in a urban railway system, and a storage medium.
Background
In recent years, with rapid expansion of metropolitan and its vicinity, urban (suburban) railroads have been widely used as a rail transit system connecting urban centers and surrounding areas. The main characteristics of such systems are their relatively small coverage, typically 50-100 km, and high traffic density, typically less than 3 minutes apart. In order to meet the increasing commute demands between cities and suburban areas, urban railway systems must have fast and high frequency operating characteristics, and therefore their design speeds are typically between 100 and 200 km/h.
Under such a background, in order to realize smooth switching between different rail traffic systems, a switching method and a switching system of suburban railway vehicle-mounted equipment are proposed in the prior art. The system mainly relies on a central control unit called a 'switching module' to coordinate vehicle-mounted devices of two different systems. The control of one system can be transferred to the control of the other system through the switching module, so that the continuous running of the train on suburban roads is realized.
Although the prior art provides a solution for system switching, there are some key issues that need to be addressed. First, the design of the switching module makes the security of the whole system highly dependent on the stability and accuracy of the software and hardware. In addition, there is a lack of effective two-way communication and security check mechanisms between two different systems of vehicle-mounted devices. When the switching module sends a switching instruction, the two devices cannot mutually confirm and verify the switching result. Not only does this design increase the complexity of the system, but it may introduce additional security risks. Therefore, there is a need for a system switching method for suburban railway vehicle-mounted equipment that is more robust, safe and capable of effectively solving the above-mentioned problems.
Disclosure of Invention
In view of this, the embodiment of the application provides a method, a device and a storage medium for switching the mode of vehicle-mounted equipment of a city railway, so as to solve the problems of lack of effective bidirectional communication and safety verification mechanism between vehicle-mounted equipment in the prior art, increased complexity of a system, more complicated existing solutions, multiple fault links, high research and development cost and poor stability.
In a first aspect of the embodiments of the present application, a method for switching a system of a vehicle-mounted device of a urban railway is provided, including: the method comprises the steps that a first-system vehicle-mounted host and a second-system vehicle-mounted host are used for respectively sending output instructions of switching control to a switching unit, so that the switching unit responds to the output instructions to determine the vehicle-mounted host in a main control state at present; transmitting an output instruction of the vehicle-mounted host computer in the current master control state to the vehicle, and transmitting stoping information of a vehicle control mode of the vehicle-mounted host computer in the current master control state to the vehicle-mounted host computer in the first mode and the vehicle-mounted host computer in the second mode; and controlling the vehicle to run on the rail of the urban railway by using the output instruction of the vehicle-mounted host computer in the current master control state.
In a second aspect of the embodiments of the present application, there is provided a system switching device for an on-board device of a urban railway, including: the transmission module is configured to respectively transmit output instructions of switching control to the switching unit by utilizing the vehicle-mounted host computer of the first system and the vehicle-mounted host computer of the second system, so that the switching unit responds to the output instructions to determine the vehicle-mounted host computer in the current master control state; the transmission module is configured to transmit an output instruction of the vehicle-mounted host computer in the current master control state to the vehicle and transmit stoping information of a vehicle control mode of the vehicle-mounted host computer in the current master control state to the vehicle-mounted host computer in the first mode and the vehicle-mounted host computer in the second mode; and the control module is configured to control the vehicle to run on the rail of the urban railway by utilizing the output instruction of the vehicle-mounted host computer in the current master control state.
In a third aspect of the embodiments of the present application, there is provided an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the above method when executing the computer program.
In a fourth aspect of the embodiments of the present application, there is provided a computer readable storage medium storing a computer program which, when executed by a processor, implements the steps of the above method.
The above-mentioned at least one technical scheme that this application embodiment adopted can reach following beneficial effect:
the method comprises the steps that an output instruction of switching control is sent to a switching unit by utilizing a vehicle-mounted host computer of a first system and a vehicle-mounted host computer of a second system respectively, so that the switching unit responds to the output instruction to determine the vehicle-mounted host computer in a main control state at present; transmitting an output instruction of the vehicle-mounted host computer in the current master control state to the vehicle, and transmitting stoping information of a vehicle control mode of the vehicle-mounted host computer in the current master control state to the vehicle-mounted host computer in the first mode and the vehicle-mounted host computer in the second mode; and controlling the vehicle to run on the rail of the urban railway by using the output instruction of the vehicle-mounted host computer in the current master control state. The method and the device realize correct, safe and reliable switching between the two vehicle-mounted hosts in different systems, are simple in switching process, are easy to operate, reduce fault links, ensure system safety and improve reliability and stability of the system.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following description will briefly introduce the drawings that are needed in the embodiments or the description of the prior art, it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flow chart of a method for switching the system of vehicle-mounted equipment of a urban railway provided by an embodiment of the present application;
fig. 2 is a schematic architecture diagram of a system switching system of a vehicle-mounted device of a city railway provided in an embodiment of the present application;
fig. 3 is a schematic diagram of switching control of the relay switching unit provided in the embodiment of the present application;
fig. 4 is a schematic diagram of communication connection between a dual-set on-board host provided in an embodiment of the present application and a train network, DMI;
fig. 5 is a schematic structural diagram of a system switching device for a vehicle-mounted device of a urban railway provided in an embodiment of the present application;
fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system configurations, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
The urban (suburban) railway refers to a passenger transportation rail traffic system in the range of a metropolitan area, is used for serving cities, suburban areas, central cities, satellite cities, important towns and the like, the service range is generally within 50-100 km, the station distance is short, the driving density is large (the interval is less than 3 minutes), the design speed is generally 100-200 km/h, and obvious public transportation and rapid operation requirements are realized.
However, there is no unified signal system for the urban railway, most of the signal systems are CTCS-2 or CBTC systems, and meanwhile, according to the current urban development and planning, the urban railway and urban rail transit have the requirement of collinear or overline operation, which brings the requirement of compatibility with different signal systems for the urban railway train operation control system (hereinafter referred to as the train control system). The system application conditions of the domestic rail transit train control system are shown in the following table:
table 1 table of the system application of the rail transit train control system
For the selection of the urban railway train control system, the mature system only has two types of CTCS and CBTC at present, but the two types of systems are directly applied to the urban railway, and the following problems exist:
1) Ctcs2+ato system: the turning back interval is generally about 10 minutes, and the requirement of 3 minutes of operation interval cannot be met; the interconnection and intercommunication between CTCS lines are supported, and the interconnection and intercommunication between CTCS lines and CBTC lines cannot be supported.
2) CBTC system: the method supports the interconnection and intercommunication between CBTC lines, and cannot support the requirements of the interconnection and intercommunication operation between CBTC lines and CTCS lines; an operating speed of 200km/h has not yet been fully utilized.
In order to meet the system switching requirement of the urban railway in the running process, a system switching method of a train control system which can be compatible with the CTCS2+ATO system and the CBTC system is needed. The existing compatible train control system mainly comprises the following two parts:
the compatible ground train control scheme comprises the following steps: the scheme aims to provide a mechanism for the ground control center to simultaneously process the CTCS2+ATO system and the CBTC system, so that the ground control center can seamlessly interact with the train no matter which system the train currently adopts.
Compatible vehicle-mounted train control scheme: the scheme provides a method for the vehicle-mounted system to process and switch the CTCS2+ATO system and the CBTC system simultaneously, thereby allowing the vehicle-mounted system to switch between the two systems automatically or manually according to the requirement in the driving process.
It is noted that these two schemes may be used alone or in combination to provide a more complete and efficient system switch solution.
In order to meet the specific requirements of the urban railway and solve the problems possibly encountered in the system selection process, the embodiment of the application provides a double-set vehicle-mounted scheme sharing the peripheral equipment, and the embodiment of the application is an improvement on the compatible-type vehicle-mounted train control scheme in the compatible-type train control system. The key idea of the technical scheme is to enable two sets of vehicle-mounted equipment to share key external interfaces such as an electrical interface, a network interface and man-machine interaction equipment (such as DMI) of a vehicle. Thus, when the vehicle runs under a certain system, only the vehicle-mounted device of the currently activated system can interact information with the external interface devices.
The system switching is the key of the technical scheme. When implementing the system switching, it is not only ensured that the vehicle-mounted device of the new system can accurately take over the control right of the external interface, but also ensured that the switching process is safe and reliable. In other words, when switching from one system to another, the system must ensure that such switching does not result in any unstable or unsafe situation.
The following explains the contents of some column control systems involved in the actual scenario in the embodiment of the present application, which may specifically include the following:
in the technical field of rail traffic, in particular in railways and subways, the concept of "train control system" is often involved. The train control system involves techniques and specifications for controlling the operation of trains to ensure that they move safely, accurately and efficiently on the track. Several system control schemes involved in the embodiments of the present application are explained below:
CTCS (China Train Control System, chinese train control system): this is a chinese train control system for controlling the speed and position of guard trains. The safety interval between trains is ensured, so that the trains can still keep safety when running at high speed. According to characteristics of blocking mode and running speed, the CTCS can be classified into 5 classes, namely CTCS-0, CTCS-1, CTCS-2, CTCS-3 and CTCS-4 from low to high.
CTCS-2: this is a sub-version of the CTCS, CTCS-2 is a train control system that transmits train movement permission information based on track circuits and transponders, and monitors safe operation of the train using a target distance continuous speed control mode. It can implement CTCS-2 level auto-guard and other advanced functions.
CTCS-2+ato: an autopilot function is added to CTCS-2, wherein ATO stands for "automatic train operation". That is, the train can be driven automatically in certain paragraphs under the train control system mode without intervention of a driver.
CBTC (Communications-Based Train Control, communication-based train control system): the system is a modern train control system and is mainly used for subway and light rail systems. It uses wireless communication technology to monitor and control the position and speed of the train. CBTC may allow trains to run in a shorter time interval than conventional train control systems, thereby improving the capacity and efficiency of rail transit systems. CBTC is a dynamic system that continuously adjusts the operation of a train based on real-time train position and speed information.
These systems of the present embodiments define how the train moves on the track, how it communicates with other trains, signals and control centers, and how the safety and efficiency of the overall system is ensured. Each system has its specific application scenarios, advantages and limitations. It should be noted that, the "vehicle" in the embodiment of the present application refers to a train running in rail transit, such as a national railway train, an inter-city train, a subway train, and the like.
The following describes in detail a method and a device for switching modes of vehicle-mounted equipment of a urban railway according to an embodiment of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic flow chart of a method for switching the system of the vehicle-mounted equipment of the urban railway according to the embodiment of the present application. The method for switching the system of the on-board equipment of the urban railway of fig. 1 can be executed by a train control system. As shown in fig. 1, the method for switching the system of the vehicle-mounted equipment of the urban railway specifically includes:
s101, respectively sending output instructions of switching control to a switching unit by utilizing a vehicle-mounted host computer of a first system and a vehicle-mounted host computer of a second system, so that the switching unit responds to the output instructions to determine the vehicle-mounted host computer in a main control state at present;
s102, transmitting an output instruction of a vehicle-mounted host computer in a main control state to a vehicle, and transmitting stoping information of a control vehicle type of the vehicle-mounted host computer in the main control state to the vehicle-mounted host computer in a first system and the vehicle-mounted host computer in a second system;
s103, controlling the vehicle to run on the rail of the urban railway by utilizing the output instruction of the vehicle-mounted host computer in the current master control state.
Before describing the technical scheme of the application in detail, first, a system architecture related to a method for switching the system of the vehicle-mounted equipment of the railway in the market domain in the actual scene is described with reference to the accompanying drawings. Fig. 2 is a schematic architecture diagram of a system switching system of a vehicle-mounted device of a city railway according to an embodiment of the present application. As shown in fig. 2, the system architecture related to the vehicle-mounted device system switching method includes the following contents:
To realize the electrical interface switching function, the application adds a switching unit. Taking a double-set vehicle-mounted system formed by a CTCS vehicle-mounted host and a CBTC vehicle-mounted host as an example, the CTCS vehicle-mounted host and the CBTC vehicle-mounted host in the double-set vehicle-mounted system respectively output two paths of switching control DO (i.e. output instructions) to a switching unit to indicate whether the CTCS vehicle-mounted host and the CBTC vehicle-mounted host are main control equipment or not; the CTCS vehicle-mounted host and the CBTC vehicle-mounted host respectively acquire one path of DI (namely stoping input) and acquire the vehicle-mounted host which is currently determined to be in a master control state by the switching unit.
In practical application, the dual-set vehicle-mounted automatic switching scheme of the vehicle shared peripheral device comprises the following steps: switching with the vehicle electrical interface, switching with the vehicle network interface, and switching with the DMI interface. These interfaces are the communication bridge between the vehicle and external systems (e.g., signaling systems, driver operating interfaces, etc.). The double-set vehicle-mounted automatic switching means that the vehicle can freely switch between CTCS and CBTC without interfering with the operation or communication of the vehicle. Namely, the technical proposal aims to enable the vehicle to be compatible with two signal systems (CTCS and CBTC) and automatically and safely switch when required. That is, the present application indicates the master status by means of hardware or software for the above-mentioned different interfaces, and only the output of the vehicle (either CTCS vehicle-mounted host or CBTC vehicle-mounted host) in the master status can be executed and displayed, thus ensuring that only one train control system is controlling the vehicle at any time, and avoiding any collision or confusion.
In some embodiments, the sending, by using the vehicle-mounted host of the first system and the vehicle-mounted host of the second system, the output instruction of the switching control to the switching unit includes:
the method comprises the steps that a first-system vehicle-mounted host and a second-system vehicle-mounted host in a double-set vehicle-mounted are utilized to respectively send output instructions of two-way switching control to a switching unit;
the switching unit adopts a relay switching unit, and outputs an instruction for determining a vehicle-mounted host of a first system or a second system as main control equipment.
Specifically, in a train control system of a city railway, in order to realize multi-system efficient switching, the embodiment of the application provides a switching method, and the method is characterized in that two-system vehicle-mounted hosts are used for switching control at the same time.
In one example, two sets of on-board hosts are employed within a train control system, for example: a first system on-board host (e.g., CTCS on-board host) and a second system on-board host (e.g., CBTC on-board host). The two sets of onboard machines can operate in parallel, but only one set can control the vehicle at any time. In order to achieve the above function, both sets of on-board hosts may send an output instruction of the switching control to one switching unit. In this embodiment, the switching unit specifically employs a relay switching unit (e.g., a 3U relay switching unit). The main function of the relay switching unit is to determine which set of on-board host computer should be used as the main control equipment according to the received output instruction, and switch according to the main control equipment.
To ensure the switching accuracy and safety, the CTCS on-board host and the CBTC on-board host may send two paths of switching control DO (i.e., output instructions) to the relay switching unit, respectively. These output instructions can clearly indicate whether each set of on-board hosts wants to become the master device. Meanwhile, in order to acquire the current main control state, the CTCS vehicle-mounted host and the CBTC vehicle-mounted host also acquire one path of DI respectively. In this way, the two sets of on-board hosts can not only send their own states, but also acquire the states of the other set of on-board hosts, thereby ensuring the safety and accuracy of the whole switching process.
In some embodiments, the switching unit determines, in response to the output instruction, the in-vehicle host currently in the master state, including:
the switching unit judges the vehicle-mounted host computer in the main control state according to the built-in switching control logic, wherein the switching control logic comprises all output instruction combinations and judging results corresponding to the output instruction combinations;
when the switching control logic is used for judging that the output instructions of the two paths of switching control belong to the abnormal instruction combination, the switching unit selects the safety side as a judging result so as to protect the driving.
Specifically, in order to meet the requirement of system switching of the vehicle-mounted equipment in the urban railway, the embodiment of the application further describes in detail how one switching unit responds to the output instruction, so as to determine the vehicle-mounted host which is currently in the master control state.
First, a switching control logic module is assembled inside the switching unit. The module can accurately read the output instruction from the vehicle-mounted host, and makes a decision according to the output instruction, namely the relay switching unit judges which system of the vehicle-mounted host is the main control equipment according to the received two paths of DO signals. The switching control logic is internally provided with a plurality of output instruction combinations and corresponding judging results so as to ensure that the system can accurately and rapidly respond to different instructions. The following describes the switching control logic of the embodiment of the present application in detail with reference to the table and the accompanying drawings, as shown in the following table 2 and fig. 3. Fig. 3 is a schematic diagram of switching control of the 3U relay switching unit according to the embodiment of the present application.
Table 2 switching control logic table of 3u relay switching unit
In the embodiment of the application, a 3U relay switching unit is particularly selected as the switching unit. When this 3U relay switching unit receives the two DO signals, it will process according to the following rules, including for example the following processing logic:
When the DO signal is combined to 10 and 01, the switching unit will make the CTCS on-board host the master and transmit its output to the vehicle.
When the DO signals are combined to 10 and 00, 10 and 11, 10 and 10, the CTCS on-board host will also be the master and its output will be transmitted to the vehicle.
And when the DO signals are combined into 11 and 10, 00 and 10, and 01 and 10, the switching unit enables the CBTC on-board host to become a master device and transmit the output of the CBTC on-board host to the vehicle.
The VOBC in table 2 refers to a master on-board unit in the CBTC on-board host. In order to ensure the safety of the system, when the 3U relay switching unit receives other unexpected DO signal combinations, it selects the safety side as a determination result and issues an emergency braking instruction, thereby ensuring the safety of the vehicle. By this mechanism, the 3U relay switching unit can respond quickly to an abnormal situation and take appropriate safety measures.
Through the method of the embodiment, the embodiment of the application realizes the system switching among the urban railway vehicle-mounted equipment by combining the cooperation of the double sets of vehicle-mounted hosts and the 3U relay switching unit. The method not only simplifies the switching process, but also can ensure the switching accuracy, and also improves the safety and stability of the system.
In some embodiments, the method further comprises:
the method comprises the steps that a mutual exclusion logic is adopted between an output instruction sent by a vehicle-mounted host machine of a first system and an output instruction sent by a vehicle-mounted host machine of a second system, wherein the mutual exclusion logic is used for representing one of the vehicle-mounted host machine of the first system and the vehicle-mounted host machine of the second system as a main control device, and when the output instruction does not accord with the mutual exclusion logic, the output instruction is judged to belong to an abnormal instruction combination.
Specifically, in order to further improve the safety and reliability of the mode switching of the urban railway vehicle-mounted equipment, the embodiment of the application also provides a reinforced mode switching method. In this method, when the first system in-vehicle host and the second system in-vehicle host attempt to send output instructions, a specific mutual exclusion logic must be followed between them. Such exclusive logic ensures that only one on-board host can act as a master device at any given time and send an output instruction to the outside. This design aims to prevent two on-board hosts from attempting to control the system simultaneously or in conflict, thereby ensuring the stability and safety of the system.
Further, to prevent cure failures that may be caused by the normal DO, the method employs two-way normal DO mutex logic. It should be noted that, the exclusive logic of the two-way normal DO is only an alternative embodiment, and in practical application, the embodiments of the present application are not limited to use of the two-way normal DO, and all fall within the protection scope of the embodiments of the present application, regardless of whether use of the two-way DO or use of the secure DO or the normal DO.
In addition, in order to ensure that the output of the vehicle-mounted equipment is consistent with the expected state, a stoping mechanism is also introduced in the method. By this mechanism, the in-vehicle device can determine whether the current interface state matches its desired output state. If the current state does not match the desired output state (e.g., when it is detected that the output instruction does not conform to exclusive logic), it may be determined that the output instruction belongs to an abnormal instruction combination. In this case, the in-vehicle apparatus is immediately directed to the safe side to prevent any possible unsafe operation.
By the method of the embodiment, the embodiment provides a vehicle-mounted equipment system switching method with enhanced safety characteristics, and by adopting mutual exclusion logic and a stoping mechanism, correct and safe response of the system in the face of abnormal conditions is ensured.
In some embodiments, after delivering the output instruction of the on-board host currently in the master state to the vehicle, the method further comprises:
the vehicle-mounted host computer of the first system and the vehicle-mounted host computer of the second system are respectively connected with a train network through respective communication protocols, and system information for representing the vehicle-mounted host computer in the current master control state is added in the communication protocols, so that the vehicle executes an output instruction from the vehicle-mounted host computer in the current master control state according to the system information.
Specifically, after determining which on-board host is in master and delivering the corresponding output instructions to the vehicle, the system further refines the communication process with the vehicle. The following describes the content of the communication connection between the on-board host and the train network in detail with reference to the accompanying drawings, and fig. 4 is a schematic diagram of the communication connection between the two on-board hosts and the train network provided in the embodiment of the present application. As shown in fig. 4, the dual set of on-board hosts and train network communication connections may include the following:
the first system on-board host (CTCS on-board host) and the second system on-board host (CBTC on-board host) are both connected to the network of the vehicle, but they use respective unique communication protocols. Both communication protocols are enhanced to include a specific field representing the system information of the in-vehicle host currently acting as the master controller.
Further, the on-board hosts of both the CTCS and CBTCs communicate with the DMI (driver man machine interface) and train network of the vehicle. This means that both sets of onboard hosts can interact with the driver's human-machine interface as well as other parts of the vehicle. In this way, the DMI and the train network not only can display which system of the vehicle-mounted host is currently in a control state, but also can execute corresponding operations according to the system information.
Further, during the communication process, the two sets of on-board devices use different MVB station numbers (for MVB communication) or IP addresses (for TRDP communication) respectively on the train network. This ensures that each in-vehicle device has its unique identity, thereby avoiding any conflicts in communication. In order to enhance the security of the system, a field is added to the communication protocol, and the field indicates that the current device is a master device (standard). From this field, the vehicle can determine which on-board host is sending control instructions and perform the corresponding operations accordingly.
In addition, in order to ensure the stability and reliability of the system, the in-vehicle device performs a self-check based on feedback information received from the vehicle network. If these feedback information do not match the desired output of the in-vehicle device, the system will immediately initiate a safety program, leading to the safety side, to prevent any unsafe operation or behavior.
Through the method of the embodiment, the embodiment of the application provides an enhanced system switching method, and the method ensures that the vehicle can safely and accurately execute the instructions of the vehicle-mounted equipment in a multi-system environment through an accurate communication protocol and enhanced safety characteristics.
In some embodiments, after delivering the output instruction of the on-board host currently in the master state to the vehicle, the method further comprises:
the method comprises the steps that a first-system vehicle-mounted host and a second-system vehicle-mounted host are respectively connected with a DMI man-machine interface through respective communication protocols, and system information used for representing the vehicle-mounted host in a main control state at present is added in the communication protocols, so that the DMI man-machine interface displays an interface of the vehicle-mounted host in the main control state at present according to the system information;
when the switching unit selects the safety side as a judging result, the DMI man-machine interface continues to display the interface of the vehicle-mounted host before receiving the system information, and when the DMI man-machine interface does not receive any system information, the switching unit judges that the vehicle-mounted host is initially powered on, and the DMI man-machine interface displays the system selecting interface.
Specifically, in order to enable a driver to clearly know which vehicle-mounted device is currently in a master control state and provide a corresponding operation interface for the vehicle-mounted device, the embodiment of the application also provides an enhanced communication method with a driver man-machine interface (DMI).
In the embodiment of the application, after determining which vehicle-mounted host (i.e. the first system or the second system) is currently in the master control state and transmitting the output instruction to the vehicle, the system further improves the communication process with the DMI. For this purpose, the two types of vehicle-mounted hosts are connected with the DMI through their proprietary communication protocols, and a specific field is added in the communication protocol to represent the system information of the vehicle-mounted host currently serving as the master controller.
Further, both the CTCS on-board host and the CBTC on-board host have their communication protocols added with a "current device as master device (system)" field. Based on this field, the DMI can easily determine which in-vehicle host is sending control instructions and display the corresponding operator interface accordingly. In order to ensure the stability and reliability of the system, the DMI also feeds back the interface system currently displayed by the DMI to two sets of vehicle-mounted equipment. If these feedback information match the expected output of the in-vehicle device, the in-vehicle device can confirm that the system is functioning properly.
However, in certain specific situations, such as when both sets of onboard devices claim themselves to be master devices or neither claim, the DMI may take a conservative policy. Specifically, the DMI will continue to display the interface corresponding to the format information it last received, and maintain the current operation state. If the DMI has never received a statement from the master device, for example, upon initial power-up of the system, it will enter a particular mode, displaying a system selection interface that allows the driver or other operator to select the system that he wants to use.
By the method of the embodiment, the vehicle can be operated according to the correct system, and an intuitive interface is provided, so that a driver or other operators can clearly know which system is controlling the vehicle, and safe and effective operation of the vehicle is ensured.
In practical application, the vehicle-mounted host of the first system in the embodiment of the application may be a CTCS vehicle-mounted host, and the vehicle-mounted host of the second system may be a CBTC vehicle-mounted host. It should be understood that the above-mentioned two-system vehicle-mounted hosts are not limited to the technical solution of the present application, and the present application is applicable to control switching between any two-system vehicle-mounted hosts.
According to the technical scheme provided by the embodiment of the application, the embodiment of the application realizes the high-efficiency unified access of the electrical interface, the network interface and the DMI man-machine interface of the double-set type vehicle-mounted equipment and the vehicle. Compared with the traditional single-set vehicle-mounted scheme, the three interfaces are integrated, so that the physical level of the three interfaces is not increased, and the complexity and the cost of independently configuring the interfaces for each set of vehicle-mounted equipment are avoided. The design not only simplifies the hardware structure and the installation process, but also ensures that only the system in the current master control state can effectively control the vehicle.
In addition, the scheme explicitly considers the safety of the system, and introduces a multi-level safety check mechanism. Firstly, pure hardware control is adopted for switching the vehicle electrical interface, so that possible fault points are effectively reduced, and the overall reliability of the system is improved. Meanwhile, the switching mode of the pure hardware also ensures the quick response of the system and improves the safety of the system in emergency.
Furthermore, for the network and the DMI interface, the scheme introduces a feedback checking mechanism, so that good coordination among the vehicle-mounted equipment, the driver and the vehicle is ensured. The checking mechanism ensures that the control instruction is correctly transmitted and executed, and also provides visual feedback for a driver, so that the driver can know the current state of the vehicle and the control system in time, thereby carrying out corresponding operation.
Therefore, the technical scheme provided by the application successfully solves the problem of unification of the double-set type vehicle-mounted equipment and the vehicle interface, simultaneously also considers the safety and reliability of the system, and provides powerful support for efficient and safe operation of the urban railways.
The following are device embodiments of the present application, which may be used to perform method embodiments of the present application. For details not disclosed in the device embodiments of the present application, please refer to the method embodiments of the present application.
Fig. 5 is a schematic structural diagram of a system switching device for a vehicle-mounted device of a urban railway according to an embodiment of the present application. As shown in fig. 5, the system switching device for the on-board equipment of the urban railway includes:
the sending module 501 is configured to send an output instruction of switching control to the switching unit by using the vehicle-mounted host of the first system and the vehicle-mounted host of the second system respectively, so that the switching unit determines the vehicle-mounted host currently in the master control state in response to the output instruction;
The transmission module 502 is configured to transmit an output instruction of the vehicle-mounted host computer in the current master control state to the vehicle, and transmit stoping information of a vehicle control mode of the vehicle-mounted host computer in the current master control state to the vehicle-mounted host computer in the first mode and the vehicle-mounted host computer in the second mode;
the control module 503 is configured to control the vehicle to run on the rail of the urban railway by using the output instruction of the on-board host currently in the master control state.
In some embodiments, the sending module 501 of fig. 5 sends the output instruction of the two-way switching control to the switching unit by using the vehicle-mounted host of the first system and the vehicle-mounted host of the second system in the dual-set vehicle; the switching unit adopts a relay switching unit, and outputs an instruction for determining a vehicle-mounted host of a first system or a second system as main control equipment.
In some embodiments, the sending module 501 of fig. 5 is further configured to determine, by using a switching unit, a vehicle-mounted host currently in a master control state according to a built-in switching control logic, where the switching control logic includes all output instruction combinations and determination results corresponding to the output instruction combinations; when the switching control logic is used for judging that the output instructions of the two paths of switching control belong to the abnormal instruction combination, the switching unit selects the safety side as a judging result so as to protect the driving.
In some embodiments, the sending module 501 of fig. 5 is further configured to use a mutual exclusion logic between an output instruction sent by the vehicle-mounted host of the first system and an output instruction sent by the vehicle-mounted host of the second system, where the mutual exclusion logic is used to characterize one of the vehicle-mounted host of the first system and the vehicle-mounted host of the second system as a master control device, and determine that the output instruction belongs to an abnormal instruction combination when the output instruction does not conform to the mutual exclusion logic.
In some embodiments, after transmitting the output instruction of the vehicle-mounted host currently in the master control state to the vehicle, the transmitting module 502 of fig. 5 connects the vehicle-mounted host of the first system and the vehicle-mounted host of the second system with the train network through respective communication protocols, and adds the system information for representing the vehicle-mounted host currently in the master control state in the communication protocols, so that the vehicle executes the output instruction from the vehicle-mounted host currently in the master control state according to the system information.
In some embodiments, after transmitting an output instruction of the vehicle-mounted host currently in the master control state to the vehicle, the transmitting module 502 of fig. 5 connects the vehicle-mounted host of the first system and the vehicle-mounted host of the second system with the DMI man-machine interface through respective communication protocols, and adds system information for representing the vehicle-mounted host currently in the master control state in the communication protocols, so that the DMI man-machine interface displays an interface of the vehicle-mounted host currently in the master control state according to the system information; when the switching unit selects the safety side as a judging result, the DMI man-machine interface continues to display the interface of the vehicle-mounted host before receiving the system information, and when the DMI man-machine interface does not receive any system information, the switching unit judges that the vehicle-mounted host is initially powered on, and the DMI man-machine interface displays the system selecting interface.
In some embodiments, the first system on-board host is a CTCS on-board host, and the second system on-board host is a CBTC on-board host.
It should be understood that the sequence number of each step in the foregoing embodiment does not mean that the execution sequence of each process should be determined by the function and the internal logic of each process, and should not limit the implementation process of the embodiment of the present application in any way.
Fig. 6 is a schematic diagram of an electronic device 6 provided in an embodiment of the present application. As shown in fig. 6, the electronic device 6 of this embodiment includes: a processor 601, a memory 602 and a computer program 603 stored in the memory 602 and executable on the processor 601. The steps of the various method embodiments described above are implemented by the processor 601 when executing the computer program 603. Alternatively, the processor 601, when executing the computer program 603, performs the functions of the modules/units of the apparatus embodiments described above.
The electronic device 6 may be a desktop computer, a notebook computer, a palm computer, a cloud server, or the like. The electronic device 6 may include, but is not limited to, a processor 601 and a memory 602. It will be appreciated by those skilled in the art that fig. 6 is merely an example of the electronic device 6 and is not limiting of the electronic device 6 and may include more or fewer components than shown, or different components.
The processor 601 may be a central processing unit (Central Processing Unit, CPU) or other general purpose processor, digital signal processor (Digital Signal Processor, DSP), application specific integrated circuit (Application Specific Integrated Circuit, ASIC), field programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like.
The memory 602 may be an internal storage unit of the electronic device 6, for example, a hard disk or a memory of the electronic device 6. The memory 602 may also be an external storage device of the electronic device 6, for example, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash Card (Flash Card) or the like, which are provided on the electronic device 6. The memory 602 may also include both internal and external storage units of the electronic device 6. The memory 602 is used to store computer programs and other programs and data required by the electronic device.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units and modules is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions. The functional units and modules in the embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit, where the integrated units may be implemented in a form of hardware or a form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a readable storage medium (e.g., a computer readable storage medium). Based on such understanding, the present application implements all or part of the flow in the methods of the above embodiments, or may be implemented by a computer program to instruct related hardware, and the computer program may be stored in a computer readable storage medium, where the computer program may implement the steps of the respective method embodiments described above when executed by a processor. The computer program may comprise computer program code, which may be in source code form, object code form, executable file or in some intermediate form, etc. The computer readable storage medium may include: any entity or device capable of carrying computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth.
The above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.
Claims (10)
1. The method for switching the system of the vehicle-mounted equipment of the urban railway is characterized by comprising the following steps of:
the method comprises the steps that a first-system vehicle-mounted host and a second-system vehicle-mounted host are used for respectively sending output instructions of switching control to a switching unit, so that the switching unit responds to the output instructions to determine the vehicle-mounted host in a main control state at present;
transmitting the output instruction of the vehicle-mounted host computer in the current master control state to a vehicle, and transmitting stoping information of a control vehicle type of the vehicle-mounted host computer in the current master control state to the vehicle-mounted host computers in the first system and the vehicle-mounted host computers in the second system;
and controlling the vehicle to run on the rail of the urban railway by utilizing the output instruction of the vehicle-mounted host computer in the current master control state.
2. The method according to claim 1, wherein the sending, by the vehicle-mounted host of the first system and the vehicle-mounted host of the second system, the output instruction of the switching control to the switching unit respectively includes:
the method comprises the steps that a first-system vehicle-mounted host and a second-system vehicle-mounted host in a double-set vehicle-mounted are utilized to respectively send output instructions of two-way switching control to the switching unit;
the switching unit adopts a relay switching unit, and the output instruction is used for determining a vehicle-mounted host of a first system or a second system as main control equipment.
3. The method according to claim 2, wherein the determining, by the switching unit in response to the output instruction, the in-vehicle host currently in the master state includes:
the switching unit judges a vehicle-mounted host computer in a main control state at present according to a built-in switching control logic, wherein the switching control logic comprises all output instruction combinations and judging results corresponding to the output instruction combinations;
when the switching control logic is utilized to judge that the output instructions of the two paths of switching control belong to an abnormal instruction combination, the switching unit selects a safety side as a judging result so as to protect driving.
4. A method according to claim 3, characterized in that the method further comprises:
and a mutual exclusion logic is adopted between an output instruction sent by the vehicle-mounted host computer of the first system and an output instruction sent by the vehicle-mounted host computer of the second system, wherein the mutual exclusion logic is used for representing one of the vehicle-mounted host computer of the first system and the vehicle-mounted host computer of the second system as a main control device, and when the output instruction does not accord with the mutual exclusion logic, the output instruction is judged to belong to an abnormal instruction combination.
5. The method according to claim 1, wherein after the transmitting of the output instruction of the in-vehicle host computer currently in the master state to the vehicle, the method further comprises:
the vehicle-mounted host computer of the first system and the vehicle-mounted host computer of the second system are respectively connected with a train network through respective communication protocols, and system information used for representing the vehicle-mounted host computer in the current master control state is added in the communication protocols, so that the vehicle executes an output instruction from the vehicle-mounted host computer in the current master control state according to the system information.
6. The method according to claim 1, wherein after the transmitting of the output instruction of the in-vehicle host computer currently in the master state to the vehicle, the method further comprises:
the vehicle-mounted host computer of the first system and the vehicle-mounted host computer of the second system are respectively connected with a DMI man-machine interface through respective communication protocols, and system information used for representing the vehicle-mounted host computer in a main control state is added in the communication protocols, so that the DMI man-machine interface displays an interface of the vehicle-mounted host computer in the main control state according to the system information;
And when the DMI man-machine interface does not receive any system information, the DMI man-machine interface is judged to be initially electrified, and the DMI man-machine interface displays a system selection interface.
7. The method of any one of claims 1 to 6, wherein the first system on-board host is a CTCS on-board host and the second system on-board host is a CBTC on-board host.
8. A vehicular equipment system switching apparatus for a city railway, comprising:
the transmission module is configured to respectively transmit output instructions of switching control to the switching unit by utilizing the vehicle-mounted host computer of the first system and the vehicle-mounted host computer of the second system, so that the switching unit responds to the output instructions to determine the vehicle-mounted host computer in the current master control state;
the transmission module is configured to transmit the output instruction of the vehicle-mounted host computer in the current master control state to a vehicle and transmit the stoping information of the control vehicle type of the vehicle-mounted host computer in the current master control state to the vehicle-mounted host computers in the first system and the vehicle-mounted host computers in the second system;
And the control module is configured to control the vehicle to run on the rail of the urban railway by utilizing the output instruction of the vehicle-mounted host computer in the current master control state.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the method of any one of claims 1 to 7 when executing the computer program.
10. A computer readable storage medium storing a computer program, characterized in that the computer program when executed by a processor implements the method according to any one of claims 1 to 7.
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| WO2023116360A1 (en) * | 2021-12-21 | 2023-06-29 | 卡斯柯信号有限公司 | Tacs and tbtc integrated signaling system and switching method thereof |
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| CN110920694A (en) * | 2019-11-28 | 2020-03-27 | 中国铁道科学研究院集团有限公司通信信号研究所 | Switching method for interconnection and intercommunication of CBTC (communication based train control) system and CTCS (China train control System) |
| WO2023116360A1 (en) * | 2021-12-21 | 2023-06-29 | 卡斯柯信号有限公司 | Tacs and tbtc integrated signaling system and switching method thereof |
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