On-demand remote monitoring system and method for urban rail operation

Abstract

The invention relates to a video-on-demand remote monitoring system and method for urban rail operation, the system comprises an operation workstation, an acquisition terminal, a video-on-demand server and a video-on-demand terminal, the operation workstation is connected with the acquisition terminal, the acquisition terminal is in communication connection with the video-on-demand server, and the video-on-demand terminal is in communication connection with the video-on-demand server; an on-demand connection is established between the on-demand terminal and the on-demand server, an acquisition terminal needing to be monitored is selected after the on-demand connection is established, and the acquisition terminal acquires a video signal of an operation workstation and pushes the video signal to the on-demand terminal through the on-demand server; and when the system starts or ends or pushes the flow, the acquisition terminal and the on-demand server keep heartbeat, and are used for pushing the flow at any time and saving the flow pushing flow when the on-demand is not carried out. According to the invention, the operation work station needing to be monitored is selected through the on-demand terminal, the 4G network flow use is optimized, and the video flow pushing is carried out only when the user requests, so that the high flow cost caused by the video flow pushing is reduced, and the operation cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of urban rail remote monitoring, and in particular to an on-demand remote monitoring system and method for urban rail operation. Background Art

[0002] With the development of rail transit technology and industry, the fully automatic operation system of urban rail transit has become the mainstream standard system for urban rail lines at home and abroad. The fully automatic operation system of urban rail transit is an unmanned subway system. All trains on the line operate in an orderly manner according to the dispatching instructions of the fully automatic operation system and the planned operation diagram. Since there are usually no drivers on the trains, all functions of the fully automatic operation system of urban rail transit in normal scenarios, fault scenarios and emergency scenarios are operated by dispatchers at the center level, so it is particularly important to monitor and manage the system at the center level.

[0003] The invention patent with publication number CN107707881A discloses a remote monitoring system for a construction site based on the Internet and a mobile terminal, which belongs to the field of monitoring technology and includes a front-end acquisition part, a data processing part, a data transmission part, a PC terminal and a mobile terminal. The front-end acquisition part includes a camera device for shooting and storing video information; the data processing part includes a video encoder for streaming media processing of the video information collected by the front end to achieve analog / digital conversion; the data transmission part sends the collected video information and the converted digital signal to the background monitoring service center via Ethernet; the background monitoring service center is provided with an NVR, and the background monitoring service center is connected to the PC terminal and the mobile terminal; the patent uses Ethernet for data transmission. When the working scene is not suitable for Ethernet transmission, if 4G traffic real-time streaming is adopted, it will cause a great waste of 4G streaming traffic.

[0004] Therefore, providing a remote monitoring system and method for reducing traffic waste is an issue that is urgently needed to be addressed. Summary of the invention

[0005] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and provide an on-demand remote monitoring system and method for urban rail operation.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] According to one aspect of the present invention, there is provided an on-demand remote monitoring system for urban rail operation, comprising an operation workstation, a collection terminal, an on-demand server and an on-demand terminal, wherein the operation workstation is connected to the collection terminal, the collection terminal is connected to the on-demand server in communication, and the on-demand terminal is connected to the on-demand server in communication;

[0008] Among them, the on-demand terminal and the on-demand server establish a on-demand connection. After the on-demand connection is established, the acquisition terminal that needs to be monitored is selected. The acquisition terminal collects the video signal of the operation workstation and pushes the video signal to the on-demand terminal through the on-demand server; when the system starts or ends or pushes the stream, the acquisition terminal and the on-demand server both maintain a heartbeat, which is used for pushing the stream at any time and saving the streaming traffic when it is not on demand.

[0009] As a preferred technical solution, the operation workstation includes an HDMI video output port, and the HDMI video output port is connected to the acquisition terminal.

[0010] As a preferred technical solution, the operation workstation includes a train dispatching workstation, a vehicle dispatching workstation, a chief dispatching workstation, a yard dispatching workstation and a passenger dispatching workstation.

[0011] As a preferred technical solution, the acquisition terminal includes a 4G communication unit, which is connected to the on-demand server to convert the video input signal into the RTMP real-time message transmission protocol and access it to the Internet through a live broadcast protocol for on-demand viewing.

[0012] As a preferred technical solution, the on-demand server is equipped with a fixed IP address or streaming network domain name, and provides RTMP encrypted streaming media information push and storage services to the outside world.

[0013] As a preferred technical solution, the on-demand terminal includes an on-demand mobile terminal and an on-demand PC terminal, and both the on-demand mobile terminal and the on-demand PC terminal are installed with a streaming media player supporting RTMP.

[0014] According to another aspect of the present invention, there is provided a method for an on-demand remote monitoring system for urban rail operation as described above, the method comprising the following steps:

[0015] S1, using the VOD terminal and the VOD server to establish a VOD connection;

[0016] S2. If the on-demand connection is successful, select the acquisition terminal to be monitored;

[0017] S3, the acquisition terminal acquires the video signal of the operation workstation;

[0018] S4, streaming the collected video signal to the video-on-demand terminal through the video-on-demand server;

[0019] S5, the on-demand terminal remotely monitors the operation workstation;

[0020] S6. The on-demand video is finished and the streaming is disconnected.

[0021] As a preferred technical solution, if the on-demand connection is not established or the on-demand is ended and the streaming is disconnected, the acquisition terminal and the on-demand server maintain a heartbeat.

[0022] As a preferred technical solution, if a VOD connection is established and streaming is in progress, the acquisition terminal and the VOD server maintain a heartbeat.

[0023] As a preferred technical solution, if the on-demand broadcast has not ended, the streaming continues, and the on-demand broadcast terminal monitors the operation workstation in real time.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The present invention selects the operation workstation that needs to be monitored through the on-demand terminal, optimizes the use of 4G network traffic, and pushes video streams only when the user requests, thereby reducing the high traffic costs caused by video push streaming and reducing operating costs.

[0026] 2. The present invention allows the acquisition terminal and the on-demand server to maintain connection by using a heartbeat mechanism, thereby ensuring that the system can quickly establish a connection and push the stream when needed, thereby improving the stability and reliability of the system.

[0027] 3. The present invention realizes remote monitoring through real-time on-demand mode, improves the efficiency of operation and maintenance guarantee of the urban rail fully automatic unmanned driving system, and reduces fault response and processing time.

[0028] 4. The present invention can be remotely monitored and remotely operated, can quickly respond to faults, reduce fault handling time, and improve the operational efficiency and availability of urban rail. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the system of the present invention;

[0030] Figure 2 It is a remote control flow chart of the present invention. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0032] With the development of rail transit technology and industry, the fully automatic operation system of urban rail is becoming the mainstream standard system for urban rail lines at home and abroad. The fully automatic operation system of urban rail is an unmanned subway system. All trains on the line are operated in an orderly manner according to the dispatching instructions of the fully automatic operation system and the planned operation diagram. Since there are usually no drivers on the trains, all functions of the urban rail fully automatic operation system in normal scenarios, fault scenarios and emergency scenarios are operated by dispatchers at the central level, so it is particularly important to monitor and manage the system at the central level. In the current central-level operation management, the central level can have a global grasp of the operation status of trains and trackside equipment on a line. However, as a large system integrating multiple professional systems, the fully automatic operation system requires the coordination and cooperation of other types of workers. The following information sharing opacity issues affect the collaborative work efficiency of various types of workers:

[0033] 1. When the central system finds that a train or equipment on site has a fault, the maintenance personnel scattered on the line cannot grasp the real-time operation status in time, which affects the troubleshooting efficiency;

[0034] 2. When a single train breaks down, the multi-functional train controllers usually equipped on the train need to troubleshoot under the guidance and cooperation of the central dispatcher. Since the multi-functional train controllers cannot grasp the status indications of the central layer in time, the train troubleshooting task is affected;

[0035] 3. When the line operation mode is switched to emergency station control, the station attendant needs to implement emergency station control according to the instructions of the central dispatcher. The station attendant cannot intuitively understand the operation status of the global line and adjacent stations. Emergency station control requires constant communication and confirmation, which affects the accuracy and effectiveness of station control operations;

[0036] 4. When the central layer system performs event backtracking, it is necessary to copy the central dispatching system data on site at the central layer and then put it into the dedicated playback software to play back the line operation situation, which is inconvenient and inefficient.

[0037] 5. When an abnormal situation occurs on the operating line, the current abnormal situation of the line cannot be shared in time during the process of remotely seeking assistance from the signal manufacturer, which affects the fault diagnosis of the signal manufacturer;

[0038] 6. Currently, most of the existing video remote streaming products are shared cloud servers. These cloud server resources provide services for multiple users. The continuous real-time streaming to the cloud server causes a huge waste of 4G streaming traffic and is not conducive to ensuring data privacy.

[0039] Although the fully automatic unmanned driving system of urban rail is currently widely operated and used, there is a lack of an effective device and method for remote monitoring anytime and anywhere. There is a problem that a large amount of information is collected at the central level but it cannot be shared in a timely manner, which greatly affects the efficiency of the operation and maintenance of the fully automatic unmanned driving system of urban rail.

[0040] In order to solve the above problems, the present invention provides a remote monitoring system and method for urban rail operation; the present invention optimizes the use of 4G network traffic by allowing both the acquisition terminal and the on-demand server to maintain heartbeats, and only performs video streaming when requested by the user, thereby reducing the high traffic costs caused by video streaming and reducing operating costs. The present invention maintains connection by maintaining the heartbeat mechanism, ensuring that the system can quickly establish a connection and push the stream when needed, thereby improving the stability and reliability of the system. The present invention realizes remote monitoring through real-time on-demand, improves the efficiency of operation and maintenance of the urban rail fully automatic unmanned driving system, and reduces fault response and processing time. The present invention can be remotely monitored and remotely operated, can quickly respond to faults, reduce fault processing time, and improve the operational efficiency and availability of the urban rail.

[0041] Example 1

[0042] like Figure 1 As shown, an on-demand remote monitoring system for urban rail operation includes an operation workstation, a collection terminal, an on-demand server and an on-demand terminal, wherein the operation workstation is connected to the collection terminal, the collection terminal is connected to the on-demand server in communication, and the on-demand terminal is connected to the on-demand server in communication;

[0043] Among them, the on-demand terminal and the on-demand server establish a on-demand connection. After the on-demand connection is established, the acquisition terminal that needs to be monitored is selected. The acquisition terminal collects the video signal of the operation workstation and pushes the video signal to the on-demand terminal through the on-demand server; when the system starts or ends or pushes the stream, the acquisition terminal and the on-demand server both maintain a heartbeat, which is used for pushing the stream at any time and saving the streaming traffic when it is not on demand.

[0044] The operation workstation includes an HDMI video output port, and the HDMI video output port is connected to the acquisition terminal.

[0045] The operation workstation includes a train dispatching workstation, a vehicle dispatching workstation, a chief dispatching workstation, a yard dispatching workstation and a passenger dispatching workstation.

[0046] The acquisition terminal includes a 4G communication unit, which is connected to the on-demand server for communication, converting the video input signal into the RTMP real-time message transmission protocol, and accessing the Internet through the live broadcast protocol for on-demand viewing.

[0047] The on-demand server is equipped with a fixed IP address or streaming network domain name, and provides RTMP encrypted streaming media information push and storage services to the outside world.

[0048] The on-demand terminal includes an on-demand mobile terminal and an on-demand PC terminal, and both the on-demand mobile terminal and the on-demand PC terminal are installed with a streaming media player supporting RTMP.

[0049] In this embodiment, the on-demand operation workstation a: the device is an existing operation workstation used by the urban rail operation control center, which implements various types of dispatching at the central layer. The operation workstation a includes but is not limited to the driving dispatching workstation, vehicle dispatching workstation, director dispatching workstation, section dispatching workstation, passenger dispatching workstation, etc. of the urban rail full-automatic operation system, supports multiple on-demand workstations to be online on-demand at the same time, is not limited to the type of specific workstations, and is characterized by having an HDMI video output port, and the video signal is divided into one channel to be connected to the distributed video signal acquisition terminal b.

[0050] Distributed video signal acquisition terminal b: The acquisition terminal is a distributed video signal acquisition terminal b. The device accesses the video signal of the on-demand operation workstation a as input, supports 4K high-definition video signal acquisition, and has built-in private remote desktop monitoring system terminal software. The device is equipped with a 4G communication unit. The 4G communication unit converts the video input signal into the RTMP real-time message transmission protocol by using a 4G traffic card, and accesses the Internet through the live broadcast protocol for on-demand viewing. It can support the access of up to 32 distributed video signal acquisition terminal points.

[0051] MCS on-demand server c: The on-demand server is MCS on-demand server c, MCS (Media Coverage Server) streaming media coverage server c, with built-in MCS private remote desktop monitoring system basic software, providing RTMP real-time on-demand streaming media services, and performing transmission encryption communication. Manage the connection of distributed video signal acquisition terminal b, and collect the streaming media information on demand. Equipped with a fixed IP address or streaming network domain name, it provides RTMP encrypted streaming media information push and storage services to the outside world.

[0052] The on-demand terminal includes the on-demand mobile terminal d and the on-demand PC terminal e, where the on-demand mobile terminal d and the on-demand PC terminal e are mobile phones or PCs that need on-demand access. After installing a streaming media player that supports RTMP and entering a user name and password, they can connect to the MCS streaming media coverage server c to conduct real-time remote desktop monitoring of the rail transit center-level workstation. The device is characterized in that it supports the simultaneous access of up to 32 on-demand terminals, and only performs video monitoring and viewing of the remote desktop of the center-level workstation. It does not support remote operation to prevent affecting on-site operation safety.

[0053] like Figure 2As shown, a method for an on-demand remote monitoring system for urban rail operation, the method comprising the following steps:

[0054] S1, using the mobile terminal and the on-demand server to establish a on-demand connection;

[0055] S2. If the on-demand connection is successful, select the acquisition terminal to be monitored;

[0056] S3, the acquisition terminal acquires the video signal of the operation workstation;

[0057] S4, streaming the collected video signal to the video-on-demand terminal through the video-on-demand server;

[0058] S5, the on-demand terminal remotely monitors the operation workstation;

[0059] S6. The on-demand video is finished and the streaming is disconnected.

[0060] If the on-demand connection is not established or the on-demand is ended and the streaming is disconnected, the acquisition terminal and the on-demand server maintain heartbeats. If the on-demand connection is established and the streaming is being pushed, the acquisition terminal and the on-demand server maintain heartbeats. If the on-demand is not ended, the streaming continues, and the on-demand terminal monitors the operation workstation in real time.

[0061] In this embodiment, the method uses the NGINX streaming media plug-in nginx-rtmp module to provide streaming media services, such as push and pull streaming media resources, FLV / MP4 VOD on-demand based on http, and publishing, playing, recording and other operation functions based on http. The method specifically includes:

[0062] On-demand connection: Users try to use their personal PC or mobile phone to enter the RTMP domain name address through the streaming media player to establish an on-demand connection with the MCS server;

[0063] Select distributed video signal acquisition: If the on-demand connection is successful, the user selects the distributed video signal acquisition terminal to be monitored;

[0064] HDMI video signal acquisition: The distributed video signal acquisition terminal starts to acquire HDMI video signals from the on-demand operation workstation;

[0065] RTMP conversion and streaming: The collected HDMI video signal is converted into RTMP format and streamed to the video-on-demand terminal through the MCS server;

[0066] Keep heartbeat: During the streaming process, the system needs to keep heartbeat to ensure the stability of the connection;

[0067] Terminal remote monitoring: Users can remotely monitor through the terminal and view streaming video in real time;

[0068] End of on-demand playback: After the remote terminal monitoring is completed, the user can choose to end the on-demand playback;

[0069] Disconnect streaming: If the video-on-demand function ends, the system will disconnect the streaming function and end the current monitoring session.

[0070] Regardless of whether remote monitoring starts or ends, the MCS server and distributed video signal acquisition terminals maintain heartbeats, allowing video streaming to start at any time, thereby saving 4G streaming traffic on distributed video signal acquisition terminals when not on demand.

[0071] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. An on-demand remote monitoring system for urban rail operations, characterized in that: It includes an operation workstation, a collection terminal, a video-on-demand server and a video-on-demand terminal, wherein the operation workstation is connected to the collection terminal, the collection terminal is connected to the video-on-demand server in communication, and the video-on-demand terminal is connected to the video-on-demand server in communication; Among them, the on-demand terminal and the on-demand server establish a on-demand connection. After the on-demand connection is established, the acquisition terminal that needs to be monitored is selected. The acquisition terminal collects the video signal of the operation workstation and pushes the video signal to the on-demand terminal through the on-demand server; when the system starts or ends or pushes the stream, the acquisition terminal and the on-demand server both maintain a heartbeat, which is used for pushing the stream at any time and saving the streaming traffic when it is not on demand.

2. The on-demand remote monitoring system for urban rail operation according to claim 1, characterized in that: The operation workstation includes an HDMI video output port, and the HDMI video output port is connected to the acquisition terminal.

3. The on-demand remote monitoring system for urban rail operation according to claim 2, characterized in that: The operation workstation includes a train dispatching workstation, a vehicle dispatching workstation, a chief dispatching workstation, a yard dispatching workstation and a passenger dispatching workstation.

4. The on-demand remote monitoring system for urban rail operation according to claim 1, characterized in that: The acquisition terminal includes a 4G communication unit, which is connected to the on-demand server for communication, converting the video input signal into the RTMP real-time message transmission protocol, and accessing the Internet through the live broadcast protocol for on-demand viewing.

5. The on-demand remote monitoring system for urban rail operation according to claim 1, characterized in that: The on-demand server is equipped with a fixed IP address or streaming network domain name, and provides RTMP encrypted streaming media information push and storage services to the outside world.

6. The on-demand remote monitoring system for urban rail operation according to claim 1, characterized in that: The on-demand terminal includes an on-demand mobile terminal and an on-demand PC terminal, and both the on-demand mobile terminal and the on-demand PC terminal are installed with a streaming media player supporting RTMP.

7. A method for an on-demand remote monitoring system for urban rail operation as claimed in any one of claims 1 to 6, characterized in that: The method comprises the following steps: S1, using the VOD terminal and the VOD server to establish a VOD connection; S2. If the on-demand connection is successful, select the acquisition terminal to be monitored; S3, the acquisition terminal acquires the video signal of the operation workstation; S4, streaming the collected video signal to the video-on-demand terminal through the video-on-demand server; S5, the on-demand terminal remotely monitors the operation workstation; S6. The on-demand video is finished and the streaming is disconnected.

8. The method according to claim 7, characterized in that If the VOD connection is not established or the VOD ends and the streaming is disconnected, the acquisition terminal and the VOD server maintain a heartbeat.

9. The method according to claim 7, characterized in that: If a VOD connection is established and streaming is in progress, the acquisition terminal and the VOD server will maintain a heartbeat.

10. The method according to claim 7, characterized in that If the on-demand broadcast has not ended, the streaming continues, and the on-demand broadcast terminal monitors the operation workstation in real time.

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