CN111988575A - Equipment applied to urban rail transit operation data acquisition and video monitoring - Google Patents
Equipment applied to urban rail transit operation data acquisition and video monitoring Download PDFInfo
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- CN111988575A CN111988575A CN202010885751.1A CN202010885751A CN111988575A CN 111988575 A CN111988575 A CN 111988575A CN 202010885751 A CN202010885751 A CN 202010885751A CN 111988575 A CN111988575 A CN 111988575A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/27—Server based end-user applications
- H04N21/274—Storing end-user multimedia data in response to end-user request, e.g. network recorder
- H04N21/2743—Video hosting of uploaded data from client
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/4104—Peripherals receiving signals from specially adapted client devices
- H04N21/4126—The peripheral being portable, e.g. PDAs or mobile phones
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
- H04N21/47202—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for requesting content on demand, e.g. video on demand
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/643—Communication protocols
- H04N21/6437—Real-time Transport Protocol [RTP]
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- Multimedia (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Human Computer Interaction (AREA)
- Small-Scale Networks (AREA)
- Closed-Circuit Television Systems (AREA)
Abstract
The invention discloses equipment applied to urban rail transit operation data acquisition and video monitoring, which comprises a rail transit operation data and video data acquisition module, a vehicle-mounted real-time data receiving and processing module and a vehicle-mounted data multi-terminal real-time display module. The invention has the beneficial effects that: an H.264 coding format with strong network adaptability and higher coding efficiency is adopted; encoding and decoding the video by using ffmpeg; the RTP/RTCP protocol is adopted to control the video data transmission, and the feedback obtained by RTCP is used to control the transmission so as to improve the transmission service quality; the problem that a multi-camera video source is likely to generate a stuck phenomenon is solved by adopting a multithreading queue adding technology; the problems of unstable decoding and discontinuous video playing possibly generated by a receiving end are solved by adopting a multi-level buffering and multi-thread concurrency mechanism; NAT is adopted to solve the problem of penetration from a wide area network to a local area network; the optimized CDN is adopted to solve the delay phenomenon possibly generated when multiple clients request the same video source.
Description
Technical Field
The invention relates to data acquisition and monitoring equipment, in particular to equipment applied to urban rail transit operation data acquisition and video monitoring, and belongs to the technical field of railway video monitoring.
Background
With the increasing number of trains in China, the needs of railway departments for strengthening effective management of trains, reducing potential safety hazards and improving safety precaution levels become increasingly urgent. Meanwhile, the requirements on the remote video monitoring system of the train are also higher and higher.
The railroad department needs a video surveillance system that can provide more reliable, low-latency, more stable, high-quality pictures. Firstly, due to cost and other reasons, one acquisition program often needs to acquire video data of a plurality of cameras at the same time, a possibly generated pause phenomenon needs to be avoided, acquisition, encoding and sending need to be carried out synchronously, and concurrent processing needs to be carried out; then, as the train moves continuously, the signal intensity of the passing place is different, and other state information of the train exists in the transmission process, priority, reliability and real-time transmission of transmission data need to be ensured, and the problems of high efficiency of program processing and direct uploading of the original video data because the original video is not subjected to high-efficiency format compression and forwarding are solved. Therefore, the existing monitoring system is unstable in processing huge video data sources such as a plurality of trains and a plurality of cameras; secondly, because the running train is in the wide area network and the control center is in the intranet, the problem of penetration when the wide area network transmits data to the intranet needs to be solved; finally, in the control center, there is a functional requirement that the web end and the mobile end request the same video at the same time, and it is necessary to avoid the delay phenomenon during the distribution of the video data, and the real-time performance and reliability of the video data transmission are low due to the network bandwidth limitation and other factors, and when multiple clients request the same video source, the problem of delay occurs during the distribution of the video data.
Disclosure of Invention
The invention aims to solve the problems and provide equipment applied to urban rail transit operation data acquisition and video monitoring.
The invention realizes the purpose through the following technical scheme: a device applied to urban rail transit operation data acquisition and video monitoring comprises a rail transit operation data and video data acquisition module, a vehicle-mounted real-time data receiving and processing module and a vehicle-mounted data multi-terminal real-time display module; the output end of the acquisition module of the rail transit running data and the video data is connected with the input end of a receiving and processing module of the vehicle-mounted real-time data positioned in an intranet through an RTP/RTCP protocol in a wide area network, and the output end of the receiving and processing module of the vehicle-mounted real-time data is connected with the input end of a multi-end real-time display module of the vehicle-mounted data positioned in the wide area network through the RTP/RTCP protocol;
the rail transit operation data and video data acquisition module is composed of a main power panel, a protection recording module, a network interface board, a main control panel, an Ethernet board, a wireless communication board and a combiner, wherein the main power panel, the protection recording module, the network interface board, the main control panel, the Ethernet board, the wireless communication board and the combiner are sequentially arranged and connected through back winding;
the receiving and processing module of the vehicle-mounted real-time data comprises a collecting end and a receiving end, the collecting end comprises an H.264 coding module, an RTP packaging module, a sending speed control module and a Qos feedback control module, the receiving end comprises a Cos information feedback module, an RTP unpacking module and an H.264 coding module, the output end of the Qos information feedback module of the receiving end is connected with the input end of the Qos feedback control module of the collecting end through RTCP, the output end of the H.264 coding module of the collecting end is connected with the input end of the RTP packaging module, the output end of the RTP packaging module is connected with the input end of the sending speed control module, the output end of the Qos feedback control module is connected with the input end of the sending speed control module, the output end of the sending speed control module is connected with the input end of the RTP unpacking module through RTP, and the output end of the RTP unpacking module is respectively connected with the input end of the H.264 coding module and the input end of the Cos Connecting;
the multi-terminal real-time display module of the vehicle-mounted data comprises vehicle-mounted equipment, a ground server and terminal display equipment, wherein the vehicle-mounted equipment, the ground server and the terminal display equipment are connected through the Internet, the terminal display equipment displays an online locomotive sequence in real time and requests real-time video data of a locomotive according to requirements, the ground server processes a terminal equipment request and transmits the request to the corresponding vehicle-mounted equipment, the vehicle-mounted equipment uploads the video data to the ground server, and the data are issued to the terminal display equipment through the ground server according to a unique identification code of the terminal display equipment.
As a still further scheme of the invention: the network interface board of the acquisition module of the rail transit operation data and the video data provides RS485 and HDLC communication interfaces, the Ethernet board provides a plurality of industrial Ethernet communication interfaces, so that the hardware connection with the vehicle-mounted operation equipment and the video monitoring equipment is completed, and the vehicle-mounted operation equipment actively sends the operation data to the vehicle-mounted data acquisition equipment according to the protocol specification.
As a still further scheme of the invention: the acquisition end of the vehicle-mounted real-time data receiving and processing module issues the vehicle-mounted real-time data to the ground server through the 4G network, and the ground server deploys a ground receiving program on the windows operating platform, so that the vehicle-mounted real-time data and the video data are received.
As a still further scheme of the invention: the rail transit operation data and video data acquisition module, the vehicle-mounted real-time data receiving and processing module and the vehicle-mounted data multi-end real-time display module adopt a network transparent transmission technology of a multi-level buffering and multi-thread concurrent mechanism when a wide area network goes to an intranet and then to the wide area network, adopt an RTP/RTCP protocol to transmit and encode a video during video transmission, and adopt Ffmeg to decode the video data during video data processing.
As a still further scheme of the invention: the terminal display equipment of the multi-terminal real-time display module for the vehicle-mounted data comprises a mobile phone terminal and a web terminal, and the mobile phone terminal and the web terminal are in signal connection with the ground server through the internet.
The invention has the beneficial effects that: the device starts from a video coding format, and adopts an H.264 coding format with strong network adaptability and higher coding efficiency; encoding and decoding the video by adopting Ffmpeg; the RTP/RTCP protocol is adopted to control the transmission of video data, and the feedback obtained by RTCP is used to control the transmission so as to improve the transmission service quality while transmitting data in real time; the problem that a multi-camera video source is likely to generate a stuck phenomenon is solved by adopting a multithreading queue adding technology; the problems of unstable decoding and discontinuous video playing possibly generated by a receiving end are solved by adopting a multi-level buffering and multi-thread concurrency mechanism; NAT is adopted to solve the problem of penetration from a wide area network to a local area network; the optimized CDN is adopted to solve the delay phenomenon possibly generated when a plurality of clients request the same video source; therefore, the video monitoring system with high quality, no delay and high reliability service is completed.
Drawings
FIG. 1 is a schematic diagram of a system framework of the present invention;
FIG. 2 is a schematic diagram of a rail transit operation data and video data acquisition module according to the present invention;
FIG. 3 is a RTP-RTCP flow chart of the acquisition and reception module of the present invention;
FIG. 4 is a connection diagram of the components of the acquisition module according to the present invention;
FIG. 5 is a schematic diagram of the present invention for receiving vehicle real-time data;
FIG. 6 is a multi-terminal display of the vehicle real-time data according to the present invention.
In the figure: 1. the device comprises a main power panel, 2, a protection recording module, 3, a network interface board, 4, a main control panel, 5, an Ethernet board, 6, a wireless communication board, 7 and a combiner.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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 invention.
Referring to fig. 1 to 6, an apparatus for acquiring running data and monitoring video of urban rail transit comprises a module for acquiring running data and video data of rail transit, a module for receiving and processing vehicle-mounted real-time data, and a multi-terminal real-time display module for vehicle-mounted data; the output end of the acquisition module of the rail transit running data and the video data is connected with the input end of a receiving and processing module of the vehicle-mounted real-time data positioned in an intranet through an RTP/RTCP protocol in a wide area network, and the output end of the receiving and processing module of the vehicle-mounted real-time data is connected with the input end of a multi-end real-time display module of the vehicle-mounted data positioned in the wide area network through the RTP/RTCP protocol;
the rail transit operation data and video data acquisition module is composed of a main power panel 1, a protection recording module 2, a network interface board 3, a main control panel 4, an Ethernet panel 5, a wireless communication panel 6 and a combiner 7, wherein the main power panel 1, the protection recording module 2, the network interface board 3, the main control panel 4, the Ethernet panel 5, the wireless communication panel 6 and the combiner 7 are sequentially arranged and connected through back winding;
the receiving and processing module of the vehicle-mounted real-time data comprises a collecting end and a receiving end, the collecting end comprises an H.264 coding module, an RTP packaging module, a sending speed control module and a Qos feedback control module, the receiving end comprises a Cos information feedback module, an RTP unpacking module and an H.264 coding module, the output end of the Qos information feedback module of the receiving end is connected with the input end of the Qos feedback control module of the collecting end through RTCP, the output end of the H.264 coding module of the collecting end is connected with the input end of the RTP packaging module, the output end of the RTP packaging module is connected with the input end of the sending speed control module, the output end of the Qos feedback control module is connected with the input end of the sending speed control module, the output end of the sending speed control module is connected with the input end of the RTP unpacking module through RTP, and the output end of the RTP unpacking module is respectively connected with the input end of the H.264 coding module and the input end of the Cos Connecting;
the multi-terminal real-time display module of the vehicle-mounted data comprises vehicle-mounted equipment, a ground server and terminal display equipment, wherein the vehicle-mounted equipment, the ground server and the terminal display equipment are connected through the Internet, the terminal display equipment displays an online locomotive sequence in real time and requests real-time video data of a locomotive according to requirements, the ground server processes a terminal equipment request and transmits the request to the corresponding vehicle-mounted equipment, the vehicle-mounted equipment uploads the video data to the ground server, and the data are issued to the terminal display equipment through the ground server according to a unique identification code of the terminal display equipment.
Further, in the embodiment of the present invention, the network interface board 3 of the acquisition module of the rail transit operation data and the video data provides an RS485 and HDLC communication interface, and the ethernet board 5 provides multiple paths of industrial ethernet communication interfaces, so as to complete hardware connection with the vehicle-mounted operation device and the video monitoring device, and according to the protocol specification, the vehicle-mounted operation device actively sends the operation data to the vehicle-mounted data acquisition device.
Further, in the embodiment of the present invention, the acquisition end of the vehicle-mounted real-time data receiving and processing module issues the vehicle-mounted real-time data to the ground server through the 4G network, and the ground server deploys a ground receiving program on the windows operating platform, so as to receive the vehicle-mounted real-time data and the video data.
Further, in the embodiment of the present invention, the acquisition module of the rail transit operation data and the video data, the receiving and processing module of the vehicle-mounted real-time data, and the multi-end real-time display module of the vehicle-mounted data adopt a network transparent transmission technology of a multi-level buffering and multi-thread concurrency mechanism when the wide area network goes to the intranet and then to the wide area network, and adopt an RTP/RTCP protocol to transmit and encode the video during video transmission, and adopt an Ffmpeg to decode the video data during video data processing.
Further, in the embodiment of the present invention, the terminal display device of the multi-end real-time display module for vehicle-mounted data includes a mobile phone end and a web end, and both the mobile phone end and the web end are in signal connection with the ground server through the internet.
The working principle is as follows: when the device applied to urban rail transit operation data acquisition and video monitoring is used, the RS485 and HDLC communication interfaces provided by a network interface board and the multipath industrial Ethernet communication interfaces provided by the Ethernet interface 4 are used for completing hardware connection with the vehicle-mounted operation device and the video monitoring device, according to protocol specifications, the vehicle-mounted operation device actively sends operation data to the vehicle-mounted data acquisition device, the acquisition program completes the active acquisition of the data of the video monitoring device according to a certain method, thereby completing the acquisition of the operation data and the video data, the vehicle-mounted real-time data can be sent to a ground server through a 4G network by a wireless communication board 6, the ground server deploys a ground receiving program on a windows operation platform, thereby realizing the reception of the vehicle-mounted real-time data and the video data, when a wide area network is connected to an intranet, a network transparent transmission technology is adopted, the method ensures that network transmission can reach smoothly, adopts an RTP/RTCP protocol to transmit coded video during video transmission, controls real-time transmission and low time ductility, adopts Ffmpeg to decode video data during video data processing, and solves the problems of unstable decoding and discontinuous video playing possibly generated by a receiving end by using a multi-level buffering and multi-thread concurrency mechanism.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. A device applied to urban rail transit operation data acquisition and video monitoring comprises a rail transit operation data and video data acquisition module, a vehicle-mounted real-time data receiving and processing module and a vehicle-mounted data multi-terminal real-time display module; the method is characterized in that: the output end of the acquisition module of the rail transit running data and the video data is connected with the input end of a receiving and processing module of the vehicle-mounted real-time data positioned in an intranet through an RTP/RTCP protocol in a wide area network, and the output end of the receiving and processing module of the vehicle-mounted real-time data is connected with the input end of a multi-end real-time display module of the vehicle-mounted data positioned in the wide area network through the RTP/RTCP protocol;
the rail transit operation data and video data acquisition module is composed of a main power panel (1), a protection recording module (2), a network interface board (3), a main control panel (4), an Ethernet board (5), a wireless communication board (6) and a combiner (7), wherein the main power panel (1), the protection recording module (2), the network interface board (3), the main control panel (4), the Ethernet board (5), the wireless communication board (6) and the combiner (7) are sequentially arranged and connected through a back winding;
the receiving and processing module of the vehicle-mounted real-time data comprises a collecting end and a receiving end, the collecting end comprises an H.264 coding module, an RTP packaging module, a sending speed control module and a Qos feedback control module, the receiving end comprises a Cos information feedback module, an RTP unpacking module and an H.264 coding module, the output end of the Qos information feedback module of the receiving end is connected with the input end of the Qos feedback control module of the collecting end through RTCP, the output end of the H.264 coding module of the collecting end is connected with the input end of the RTP packaging module, the output end of the RTP packaging module is connected with the input end of the sending speed control module, the output end of the Qos feedback control module is connected with the input end of the sending speed control module, the output end of the sending speed control module is connected with the input end of the RTP unpacking module through RTP, and the output end of the RTP unpacking module is respectively connected with the input end of the H.264 coding module and the input end of the Cos Connecting;
the multi-terminal real-time display module of the vehicle-mounted data comprises vehicle-mounted equipment, a ground server and terminal display equipment, wherein the vehicle-mounted equipment, the ground server and the terminal display equipment are connected through the Internet, the terminal display equipment displays an online locomotive sequence in real time and requests real-time video data of a locomotive according to requirements, the ground server processes a terminal equipment request and transmits the request to the corresponding vehicle-mounted equipment, the vehicle-mounted equipment uploads the video data to the ground server, and the data are issued to the terminal display equipment through the ground server according to a unique identification code of the terminal display equipment.
2. The device applied to urban rail transit operation data acquisition and video monitoring according to claim 1, wherein: the network interface board (3) of the acquisition module of the rail transit operation data and video data provides RS485 and HDLC communication interfaces, the Ethernet board (5) provides a plurality of industrial Ethernet communication interfaces so as to complete hardware connection with the vehicle-mounted operation equipment and the video monitoring equipment, and the vehicle-mounted operation equipment actively sends operation data to the vehicle-mounted data acquisition equipment according to protocol specifications.
3. The device for urban rail transit operation data acquisition and video monitoring according to claim 1 or 2, characterized in that: the acquisition end of the vehicle-mounted real-time data receiving and processing module issues the vehicle-mounted real-time data to the ground server through the 4G network, and the ground server deploys a ground receiving program on the windows operating platform, so that the vehicle-mounted real-time data and the video data are received.
4. The device applied to urban rail transit operation data acquisition and video monitoring according to claim 3, wherein: the rail transit operation data and video data acquisition module, the vehicle-mounted real-time data receiving and processing module and the vehicle-mounted data multi-end real-time display module adopt a network transparent transmission technology of a multi-level buffering and multi-thread concurrent mechanism when a wide area network goes to an intranet and then to the wide area network, adopt an RTP/RTCP protocol to transmit and encode a video during video transmission, and adopt Ffmeg to decode the video data during video data processing.
5. The device for urban rail transit operation data acquisition and video monitoring according to claim 4, wherein: the terminal display equipment of the multi-terminal real-time display module for the vehicle-mounted data comprises a mobile phone terminal and a web terminal, and the mobile phone terminal and the web terminal are in signal connection with the ground server through the internet.
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| CN202010885751.1A CN111988575A (en) | 2020-08-28 | 2020-08-28 | Equipment applied to urban rail transit operation data acquisition and video monitoring |
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| CN202010885751.1A CN111988575A (en) | 2020-08-28 | 2020-08-28 | Equipment applied to urban rail transit operation data acquisition and video monitoring |
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