CN112187603B - Redundant control system for vehicle-mounted passenger information - Google Patents
Redundant control system for vehicle-mounted passenger information Download PDFInfo
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- CN112187603B CN112187603B CN202011048253.8A CN202011048253A CN112187603B CN 112187603 B CN112187603 B CN 112187603B CN 202011048253 A CN202011048253 A CN 202011048253A CN 112187603 B CN112187603 B CN 112187603B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
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Abstract
The application relates to a redundant control system of vehicle-mounted passenger information, which comprises at least one first control system, an analog bus, a plurality of second control systems and a digital bus, wherein each first control system comprises a first host and a first switch, the first host is connected with the first switch and is set to send signals, each first host is connected with the analog bus, each second control system comprises a second host, a second switch and a transparent display window, the second host is connected with the analog bus, the second host is connected with the second switch, the transparent display window is connected with the second switch and the analog bus, the first switch is respectively connected with the adjacent second switch and the two adjacent second switches through the digital bus, the second host can simultaneously receive signals from the analog bus and the digital bus, so that network bus redundancy is formed between the analog bus and the digital bus, the reliability of the system is improved, and therefore the fault rate of the PIS system is reduced.
Description
Technical Field
The present application relates to a vehicle occupant information system, and more particularly, to a redundant control system for vehicle occupant information.
Background
With the continuous progress of the rail transit communication signal technology and the computer information technology, a train-mounted Passenger Information (PIS) system has become a standard configuration of a rail transit train as a key service system for improving passenger riding experience and vehicle operation benefit, and is more and more valued by an operator, an integrator and passengers. The conventional train-mounted PIS system mainly comprises three subsystems of train broadcasting, train video entertainment and train video monitoring, provides real-time and multi-service information for passengers, comprises broadcasting voice station reporting service, subway line information display service, advertisement and entertainment video playing service, vehicle-mounted safety video monitoring service and the like, and is centralized embodiment for improving the subway service level and quality.
At present, in the industry, vehicle-mounted PIS system manufacturers are numerous, the product quality is uneven, and due to project progress and cost pressure, on the basis of no stable and reliable scheme, the cost is reduced and the research and development progress is compressed, so that the product is unstable and faults occur frequently. In addition, the current vehicle-mounted PIS system has the problems of low technical content and lagging technical development, particularly in the aspect of video entertainment information display, because of the limitation of display technology and vehicle body installation space, the vehicle-mounted PIS system still adopts a small-size LCD screen or LED screen for display, and the traditional LCD screen and LED screen cannot meet the visual experience requirements of customers on large-size, high-color-gamut and high-resolution display at present when various advanced display technologies including OLED technology and MicroLED technology are rapidly developed. Therefore, how to improve the technological content of the PIS system and simultaneously ensure the reliability and stability of the system becomes an urgent problem to be faced by PIS system manufacturers, host factories and operation departments.
Disclosure of Invention
The embodiment of the application provides a redundant control system of vehicle-mounted passenger information, and solves the problems of instability and frequent faults of the conventional vehicle-mounted PIS.
In order to solve the above technical problem, the present application is implemented as follows:
in a first aspect, a redundant control system for in-vehicle passenger information is provided, comprising: the system comprises at least one first control system, at least one second control system and a control system, wherein each first control system comprises a first host and a first switch, the first host is connected with the first switch, the first host is used for sending signals, and the first switch is used for receiving and sending signals; each first host is connected with the analog bus, and the analog bus is set to transmit signals; each second control system comprises a second host, a second switch and a transparent display window, the second host is connected with the analog bus, the second host is used for receiving and processing signals, the second host is connected with the second switch, and the transparent display window is connected with the second switch and the analog bus; the first switch, the adjacent second switch and the two adjacent second switches are respectively connected through a digital bus, and the digital bus is set to transmit signals; the first host computer transmits signals to the second host computer through the analog bus, the first exchanger receives the signals and transmits the signals to the second host computer through the digital bus and the second exchanger, so that the second host computer receives the signals from the analog bus and the digital bus at the same time, and network bus redundancy is formed between the analog bus and the digital bus.
In a first possible implementation manner of the first aspect, when both the analog bus and the digital bus are in a normal operating state, the second host preferentially processes the signal from the digital bus, and when the digital bus fails, the second host switches to process the signal from the analog bus in real time.
In a second possible implementation manner of the first aspect, the analog bus includes a control bus and an analog audio bus, and the first host, the second host, and the transparent display window are connected to the control bus and the analog audio bus, respectively.
In a third possible implementation manner of the first aspect, the digital bus has a first link and a second link, the first switch is connected to the adjacent second switch and the two adjacent second switches through the first link and the second link, respectively, and dual communication link redundancy is formed between the first link and the second link.
With reference to the third possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, each second switch has two bypass ports, and the first link and the second link are connected to the corresponding bypass ports.
In a fifth possible implementation manner of the first aspect, the number of the first control systems is two, the second host of each second control system receives signals sent by two first hosts at the same time, and control redundancy is formed between the two first hosts.
With reference to the fifth possible implementation manner of the first aspect, in a sixth possible implementation manner of the first aspect, when the second host receives signals sent by two first hosts at the same time, the second host preferentially processes the signal sent by one of the first hosts, and when one of the first hosts fails, the second host automatically switches to process the signal sent by the other first host in real time.
In a seventh possible implementation manner of the first aspect, each first control system further includes a first terminal, and the first terminal is connected to the first switch; each second control system further comprises a second terminal connected to the second switch.
With reference to the seventh possible implementation manner of the first aspect, in an eighth possible implementation manner of the first aspect, each second control system further includes a third terminal, the third terminal is connected to a transparent display window, and the transparent display window is integrated with a function module corresponding to the first host, where when it is determined that the second host connected to the transparent display window has a fault and cannot drive the corresponding second terminal, the transparent display window drives the third terminal to operate, so that terminal redundancy is formed between the third terminal and the second terminal,
in a ninth possible implementation manner of the first aspect, the transparent display window comprises a window glass display assembly and a window host, the window glass display assembly is connected with the window host, and the window host is integrated with a functional module corresponding to the first host, so that the window host and the first host form host redundancy.
Compared with the prior art, the application has the advantages that:
according to the vehicle-mounted passenger information redundancy control system, the first host forms one-way connection with the second host through the analog bus, the first host forms the other-way connection with the second host through the first switch, the digital bus and the second switch, so that the second host can receive signals from the analog bus and the digital bus simultaneously, network bus redundancy is formed between the analog bus and the digital bus, the reliability of the system is improved, and the fault rate of a PIS system is reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic diagram of a network topology of a redundant control system for in-vehicle occupant information according to a first embodiment of the present application;
fig. 2 is a schematic diagram of dual communication link connections of a first switch and a second switch according to a first embodiment of the present application;
FIG. 3 is a redundant schematic view of a transparent display window and a first host according to a first embodiment of the present application;
fig. 4 is a redundant schematic diagram of the transparent display window, the second host and the third terminal according to the first embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
As used herein, the terms "first," "second," and the like, do not denote any order or importance, nor do they limit the present application, but rather are used to distinguish one element from another or from another element or operation described in the same technical language.
In a first embodiment of the present application, please refer to fig. 1, which is a network topology diagram of a redundant control system for vehicle-mounted passenger information according to the first embodiment of the present application; as shown in the figure, the redundant control system 1 for vehicle-mounted passenger information includes at least one first control system 2, an analog bus 3, a plurality of second control systems 4 and a digital bus 5, each first control system 2 includes a first host 21 and a first switch 22, the first host 21 is connected to the first switch 22, the first host 21 is configured to send signals including, but not limited to, core control commands and control data, in the present embodiment, the first host 21 uses a cab host, and the first switch 22 uses a cab switch, but not limited thereto. Each first host 21 is connected to the analog bus 3, in the present embodiment, the analog bus 3 includes a control bus 31 and an analog audio bus 32, and the first host 21 is connected to the control bus 31 and the analog audio bus 32 by two-way connections. The first switch 22 is configured to receive and send signals, and the analog bus 3 is configured to transmit signals, specifically, signals sent by the first host 21 are transmitted through the analog bus 3 and the first switch 22. In this embodiment, each first control system 2 further includes a first terminal 23, the first terminal 23 is connected to the first switch 22, the first host 21 can control the first terminal 23 to broadcast information through the first switch 22, and the first terminal 23 uses a cab terminal, such as a speaker.
Referring back to fig. 1, each second control system 4 includes a second host 41, a second switch 42 and a transparent display window 43, the second host 41 is connected to the analog bus 3, the first host 21 forms a single connection with the second host 41 through the analog bus 3, and in this embodiment, the second host 41 is connected to the control bus 31 and the analog audio bus 32 through two connections. The second host 41 is connected to the second switch 42, the first switch 22 is connected to the adjacent second switch 42 and the two adjacent second switches 42 through the digital bus 5, respectively, so that the first host 21 forms another connection with the second host 41 through the first switch 22, the digital bus 5 and the second switch 42. The digital bus 5 is configured to transmit signals, the second host 41 is configured to receive and process signals, and specifically, the second host 41 receives signals transmitted by the first host 21 through the two connections, that is, signals from the analog bus 3 and the digital bus 5, and then selects one of the connections to process the transmitted signals, and when the selected connection fails, the selected connection is automatically switched to the other connection to process the transmitted signals, so that network bus redundancy is formed between the analog bus 3 and the digital bus 5, the reliability of the system is improved, and the failure rate of the PIS system is reduced. In this embodiment, when both the analog bus 3 and the digital bus 5 are in a normal operating state, the second host 41 preferentially processes the signal from the digital bus 5, and when the digital bus 5 fails, the second host 41 switches to process the signal from the analog bus 3 in real time.
The transparent display window 43 is connected to the second switch 42 and the analog bus 3, and in this embodiment, the transparent display window 43 is connected to the control bus 31 and the analog audio bus 32 by two-way connections. After the second host 41 processes the signal from the first host 21, the transparent display window 43 is controlled by the second switch 42 to implement the corresponding PIS service, such as playing entertainment video. In the present embodiment, the second host 41 uses a guest room host, the second switch 42 uses a guest room switch, and the transparent display window 43 uses an OLED window, but not limited thereto. In this embodiment, each second control system 4 further includes a second terminal 44, the second terminal 44 is connected to the second switch 42, and the second host 41 controls the second terminal 44 through the second switch 42 to implement a corresponding PIS service, for example, playing a station announcement audio. The second terminal 23 is a passenger room terminal such as a speaker, but not limited thereto.
The connection between the digital bus 5 and the second switch 42 will be further described below. Please refer to fig. 2, which is a schematic diagram of dual communication link connection between a first switch and a second switch according to a first embodiment of the present application; as shown in the figure, the digital bus 5 has a first link 51 and a second link 52, the first switch 22 is connected to the adjacent second switch 42 and the two adjacent second switches 42 through the first link 51 and the second link 52, respectively, and dual communication link redundancy is formed between the first link 51 and the second link 52, in this embodiment, the digital bus 5 is a dual-link aggregation gigabit or a hundred-gigabit ethernet bus, but not limited thereto.
Specifically, the first switch 22 and the second switch 42 of the vehicle-mounted PIS system all-train are networked through the first link 51 and the second link 52, when one of the links fails, the other link can still ensure the networking of all-train equipment, and therefore the reliability of the digital bus is improved. Each second switch 42 has two bypass ports 421, as shown in fig. 2, one of the bypass ports 421 refers to a1 and a2 in the figure, the other bypass port 421 refers to B1 and B2 in the figure, and the first link 51 and the second link 52 are connected to the corresponding bypass port 421, so as to form a network communication interface redundancy, so that when any second switch 42 fails or is powered off, the first link 51 can still be networked through the corresponding bypass port 421, and similarly, the second link 52 can also be networked through the corresponding bypass port 421, thereby sufficiently ensuring the reliability of the digital bus.
In an embodiment, referring to fig. 1 again, the number of the first control systems 2 is two, the second host 41 of each second control system 4 receives signals sent by two first hosts 21 simultaneously, and control redundancy is formed between the two first hosts 21. When the second host 41 receives signals sent by two first hosts 21 simultaneously, the second host 41 preferentially processes the signal sent by one of the first hosts 21, and when one of the first hosts 21 fails, the second host 41 automatically switches to process the signal sent by the other first host 21 in real time, thereby ensuring the reliability of core control signals and data from the first control system 2 of the second control system 4.
Specifically, as shown in fig. 1, two first control systems 2 are installed in the cabs at both ends of the train, and different IDs are set, for example, two second control systems 4 are respectively defined as ID1 and ID2, the second host 41 and the second terminal 44 of each second control system 4 simultaneously receive the broadcast station data and the movie entertainment data of the two first hosts 21, and the data sent by the first host 21 in the cab with ID1 is processed by default, and when it is determined that the cab host with ID1 is failed, the data of ID2 is automatically switched to be processed in real time, so that the reliability of the core control signals and data from the cab can be ensured.
In an embodiment, please refer to fig. 3, which is a redundant schematic diagram of a transparent display window and a first host according to a first embodiment of the present application; as shown in the figure, the transparent display window 43 comprises a window glass display assembly 431 and a window host 432, the window glass display assembly 431 is connected with the window host 432, the window host 432 is integrated with a functional module 4321 corresponding to the first host 21, so that the window host 432 and the first host 21 form host redundancy, when the first host 21 fails, the window host 432 starts the corresponding function of the first host 21 in real time to support the function of the first host 21, the reliable operation of train PIS system services is guaranteed, and time is created for maintenance personnel to process the failure of the first host 21.
Specifically, as shown in fig. 3, the first host 21 uses a PIS cab host, the PIS cab host functions are integrated with one window host 432 of the transparent display window 43 in a carriage adjacent to the cab, the window host 432 is used as a redundant backup host, the window host 432 is mounted on a PIS system network of the whole train through an analog bus 3 and a digital bus 5 and realizes interactive communication, the working state of the train cab host is judged in real time, and when all the cab hosts of the train are judged to be in failure, the window host 432 starts a function module 4321 corresponding to the cab host in real time to support the functions of the cab host.
In an embodiment, please refer to fig. 4, which is a schematic redundant diagram of a transparent display window, a second host and a third terminal according to a first embodiment of the present application; as shown in the figure, each second control system 4 further includes a third terminal 45, the third terminal 45 is connected to a transparent display window 43, the transparent display window 43 is integrated with a functional module corresponding to the second host 41, wherein when the transparent display window 43 determines that the second host 41 connected to the transparent display window is faulty and cannot drive the corresponding second terminal 44, the third terminal 45 is driven to operate, so that a terminal redundancy is formed between the third terminal 45 and the second terminal 44.
Specifically, as shown in fig. 4, the second host 41 uses a PIS cabin host, the third terminal 45 uses a dual-channel 5W power renting type speaker, the window host 432 integrates the corresponding functions of the PIS cabin host, including a digital and analog bus mutual redundancy function module, an audio power amplification function module, and the like, and is externally connected with the dual-channel 5W power renting type speaker, under normal conditions, the window host 432 is only used for controlling the display function of the window glass display assembly 431, when it is determined that the PIS cabin host of the cabin in which the transparent display window 43 is located is in failure and cannot drive the cabin PIS speaker to play the stop reporting audio, the cabin window host 432 automatically starts the PIS cabin host functions through a software coordination mechanism based on a certain communication protocol, namely, receives the PIS cabin host broadcast stop reporting audio data to perform decoding playing, and drives the externally connected dual-channel 5W power renting type speaker of the window host 432 to play the stop reporting audio, the reliability of the station reporting and broadcasting function of the passenger room of the PIS system is guaranteed.
In one embodiment, and referring again to fig. 4, the window glass display assembly 431 also incorporates a surveillance camera 4311, as shown in fig. 4, the monitoring camera 4311 is located in a black ink area 4312, and adopts an ultra-thin camera, the lens of the camera is arranged in the inner glass, namely, the carriage, the lens area is a transparent area, used for collecting images in the carriage, the monitoring camera 4311 selects a wide-angle camera, and the cameras are integrated with all windows of the whole carriage under the condition that the focal length is not more than 2.0, the full coverage of the monitoring image of the whole carriage can be realized, under the normal condition, the image collected by the monitoring camera 4311 is not used for storage under the normal condition, when the train PIS video monitoring subsystem fails, especially, when the car monitoring camera has a fault, the network hard disk video recorder of the monitoring system can acquire passenger room monitoring images acquired by the monitoring camera 4311, so that redundant backup of the camera is realized. Meanwhile, the window host 432 integrates a large-capacity storage module, such as a 128G solid state hard disk, and when the PIS network hard disk video recorder fails, the window host 432 can also collect passenger room monitoring images collected by a monitoring camera 4311 integrated with the window glass display assembly 431 for storage, so that the redundancy of the storage function of the PIS network hard disk video recorder is realized, and the reliability of a video monitoring subsystem is ensured.
To sum up, the application provides a redundant control system of on-vehicle passenger information, its first host computer forms to be connected all the way through analog bus and second host computer, and first host computer forms another way through first switch, digital bus and second switch and second host computer and is connected, makes the second host computer can receive the signal from analog bus and digital bus simultaneously, so make to form the network bus redundancy between analog bus and the digital bus, improves the reliability of system to reduce PIS system fault rate. The number of the first control systems is two, control redundancy is formed between the two first hosts, and therefore the reliability of core control signals and data of the second control system from the first control system is guaranteed. The window main engine of the application is integrated with the functional module corresponding to the first main engine, so that the window main engine and the first main engine form host redundancy, when the first main engine breaks down, the window main engine has the function of bearing the first main engine, reliable operation of train PIS system service is guaranteed, and time is created for maintenance personnel to process the first main engine fault. The transparent display window is further integrated with the functional module corresponding to the second host, and meanwhile the third terminal is connected with the transparent display window, so that the window host and the second host form redundancy, and terminal redundancy is formed between the third terminal and the second terminal, and the reliability of a station reporting and broadcasting function of a passenger room of a PIS system is further guaranteed.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A redundant control system for vehicle occupant information, comprising:
at least one first control system, each first control system comprising a first host and a first switch, the first host being connected to the first switch, the first host being configured to send signals, the first switch being configured to receive and send the signals;
an analog bus to which each of the first hosts is connected, the analog bus configured to transmit the signal;
the system comprises a plurality of first control systems, a plurality of second control systems and a plurality of transparent display windows, wherein each second control system comprises a second host, a second switch and a transparent display window, the second host is connected with the analog bus, the second host is used for receiving and processing the signals, the second host is connected with the second switch, the transparent display window is connected with the second switch and the analog bus, the transparent display window comprises a window glass display assembly and a window host, the window glass display assembly is connected with the window host, and the window host is integrated with a functional module corresponding to the first host, so that the window host and the first host form host redundancy;
a digital bus through which the first switch and the adjacent second switch are connected, the adjacent two second switches being connected through the digital bus, the digital bus being configured to transmit the signal;
wherein the first host transmits the signal to the second host through the analog bus, the first switch receives the signal and transmits the signal to the second host through the digital bus and the second switch, so that the second host receives the signals from the analog bus and the digital bus at the same time, and network bus redundancy is formed between the analog bus and the digital bus.
2. The system of claim 1, wherein the second host machine preferentially processes the signals from the digital bus when both the analog bus and the digital bus are in normal operation, and switches to process the signals from the analog bus in real time when the digital bus fails.
3. The system of claim 1, wherein the analog bus comprises a control bus and an analog audio bus, and the first host, the second host, and the transparent display window are connected to the control bus and the analog audio bus, respectively.
4. The system of claim 1, wherein the digital bus has a first link and a second link, the first switch and the adjacent second switch and the adjacent two second switches are connected by the first link and the second link, respectively, and a dual communication link redundancy is formed between the first link and the second link.
5. The system of claim 4, wherein each of the second switches has two bypass portals, the first link and the second link being connected to the corresponding bypass portals.
6. The system of claim 1, wherein the number of the first control systems is two, and the second host of each of the second control systems simultaneously receives the signals transmitted by the two first hosts, and control redundancy is formed between the two first hosts.
7. The system of claim 6, wherein said second host machine preferentially processes said signal transmitted by one of said first host machines when said second host machine simultaneously receives said signals transmitted by two of said first host machines, and automatically switches to process said signal transmitted by the other of said first host machines in real time when said one of said first host machines fails.
8. The system of claim 1, wherein each of the first control systems further comprises a first terminal, the first terminal being connected to the first switch; each of the second control systems further includes a second terminal connected to the second switch.
9. The system of claim 8, wherein each second control system further comprises a third terminal connected to the transparent display window, and the transparent display window integrates a functional module corresponding to the first host, wherein when the transparent display window determines that the second host connected to the transparent display window is faulty and cannot drive the corresponding second terminal, the transparent display window drives the third terminal to operate, so that terminal redundancy is formed between the third terminal and the second terminal.
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| CN112187603A (en) | 2021-01-05 |
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