CN113747096A - Vehicle-mounted network video recording system applied to rail transit environment - Google Patents
Vehicle-mounted network video recording system applied to rail transit environment Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/907—Television signal recording using static stores, e.g. storage tubes or semiconductor memories
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- G—PHYSICS
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/70—Information retrieval; Database structures therefor; File system structures therefor of video data
- G06F16/78—Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually
- G06F16/7867—Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually using information manually generated, e.g. tags, keywords, comments, title and artist information, manually generated time, location and usage information, user ratings
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- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B31/00—Arrangements for the associated working of recording or reproducing apparatus with related apparatus
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- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/65—Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
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- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
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- H04N19/423—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation characterised by memory arrangements
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- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/46—Embedding additional information in the video signal during the compression process
- H04N19/467—Embedding additional information in the video signal during the compression process characterised by the embedded information being invisible, e.g. watermarking
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Abstract
The invention discloses a vehicle-mounted network video recording system applied to a rail transit environment, wherein a network video recorder and a touch screen client end electrically connected with the network video recorder are respectively arranged in two cab at the head and the tail of a train, the two network video recorders are used for acquiring all camera data in the train through a ring network and storing the data in a hard disk, and the touch screen client end is used for carrying out parameter configuration on the network video recorder electrically connected with the touch screen client end and outputting a video picture acquired by the network video recorder. The vehicle-mounted network video recording system increases the capacity of a hard disk in the network video recorder, optimizes the storage coding format and ensures that the video recorder can store monitoring videos for 90 days. In order to prevent recorded video data from being tampered, image labeling technology is applied to images before the images are stored in a hard disk, and serial number information, time information and carriage number information of a camera are superposed on the images to be recorded.
Description
Technical Field
The invention belongs to the field of rail transit, and particularly relates to a vehicle-mounted network video recording system applied to a rail transit environment in the field, which is used for recording, storing and processing images of train monitoring videos.
Background
The urban rail transit system is used as a public place with high mobility and high concentration of personnel, and unsafe factors such as personnel congestion give criminals a chance to take advantage of the dangerous factors. Since criminal behaviors such as theft and robbery occur occasionally, the urban rail transit system particularly needs to use video monitoring to realize whole-course and all-around security prevention. Video monitoring of urban rail transit generally comprises two parts: monitoring and video storage. At present, a video monitoring system and a vehicle-mounted network video recording system are installed in urban rail transit stations of various cities in China, generally, cameras are installed in a platform and a station hall to realize in-station monitoring, and monitoring videos are stored through the in-vehicle network video recording system.
The existing vehicle-mounted network video recording system can only store 30 days of monitoring video and does not process the video. When the train is suddenly powered off, the video recorded at the moment is lost. Because the vibration amplitude is large in the running process of the vehicle, a protection mechanism is not adopted for a hard disk in the video recorder, and the hard disk can be damaged. And when the system breaks down, the system cannot automatically detect the fault and can only be overhauled by professional personnel.
Disclosure of Invention
The invention aims to solve the technical problem of providing a vehicle-mounted network video recording system applied to a rail transit environment, which can perform image processing, legacy detection and congestion degree analysis, is verified by an anti-seismic test, an anti-electromagnetic interference test and an electrical test, adapts to the train operation environment and meets the rail transit operation requirement.
The invention adopts the following technical scheme:
the utility model provides a be applied to on-vehicle network video recording system of track traffic environment which improves and lies in: the method comprises the steps that a network video recorder and a touch screen client side electrically connected with the network video recorder are respectively arranged in two driver rooms at the head and the tail of a train, the two network video recorders respectively collect all camera data in the train through a ring network and store the data in a hard disk, and the touch screen client side is used for carrying out parameter configuration on the network video recorder electrically connected with the touch screen client side and outputting video pictures collected by the network video recorder.
Furthermore, the network video recorder comprises an NVR module, an image module, a client module, a log module, a streaming media module and an equipment module; the device module is used for managing connection with all cameras in a train and performing data interaction with the cameras, the streaming media module is used for encoding and decoding video streams collected by the device module from the cameras, the image module is used for processing video stream images output by the streaming media module, processed video stream files are stored in the NVR module, the client module is in butt joint with the touch screen client and the PC client, live video streams are called from the image module according to instructions of the client module, video recording files are called from the NVR module, and the log module is used for recording logs.
Further, the image module processing includes adding a watermark; the NVR module inquires, plays back and downloads the video recording file; the client module pushes the video to the touch screen client or the PC client through the RTSP protocol or other standard video streaming protocols for playing and controlling, the instructions of the touch screen client or the PC client are transmitted to the camera in a transparent transmission mode, and the log recorded by the log module comprises a fault record, an operation record and an operation record.
Furthermore, the touch screen client comprises a recording and broadcasting module, an alarm module, a live broadcasting module and a configuration module.
Furthermore, the PC client comprises a recording and broadcasting module, a data module, a live broadcasting module and a configuration module, and can perform parameter configuration on the network video recorder.
Furthermore, the network video recorders of the head cab and the tail cab simultaneously store videos, but the network video recorders are divided into a primary video recorder and a secondary video recorder, the key starting end is a main video recorder, and the touch screen client of the main cab has a control authority.
Further, the system communicates with each device through a switch, and all devices are accessed to the switch through six or more types of network cables; data transmitted in the network are divided into a video stream and a control stream, and the video stream and the control stream are transmitted by ports without mutual interference; the video stream adopts a standard stream media mode, and the control stream adopts private protocol packet transmission.
Further, the image record of the system adopts an H.265 coding format and 720P resolution, 25 frames of images are stored every second, a video file is formed in a set period, the video file is operated for 20 hours every day and continuously stored for 90 days, a 32TB hard disk is configured in a whole row, and the hard disk adopts a circulating refreshing storage mode.
Further, before the image is stored in the hard disk, an image label technology is applied, and the number information, the time information and the carriage number information of the camera are superposed on the image for recording; special labels are added to the video of the emergency alarm.
Furthermore, the system has the fault self-diagnosis capability, and fault information including video loss alarm, network interruption alarm and hard disk fault alarm can be displayed on the cab monitor screen in real time.
The invention has the beneficial effects that:
the vehicle-mounted network video recording system increases the capacity of a hard disk in the network video recorder, optimizes the storage coding format and ensures that the video recorder can store monitoring videos for 90 days. In order to prevent recorded video data from being tampered, image labeling technology is applied to images before the images are stored in a hard disk, and serial number information, time information and carriage number information of a camera are superposed on the images to be recorded. And a special label is added to the video for emergency alarm, so that the video is convenient to search. And can also be applied to high-speed rail, tram and other similar application occasions.
Drawings
Fig. 1 is a schematic block diagram of a vehicle-mounted network video recording system disclosed in embodiment 1 of the present invention;
fig. 2 is a schematic media flow diagram of the vehicle-mounted network video recording system disclosed in embodiment 1 of the present invention;
fig. 3 is a video recording query interface diagram of the vehicle-mounted network video recording system disclosed in embodiment 1 of the present invention;
fig. 4 is a schematic composition diagram of a network video recorder in the vehicle-mounted network video recording system disclosed in embodiment 1 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In embodiment 1, this embodiment discloses a vehicle-mounted network video recording system applied to a rail transit environment, and the system has functions of automatic video recording, image processing, video playback and download, video upload, fault self-detection, driver behavior identification and the like. A network video recorder and a touch screen client end electrically connected with the network video recorder are respectively arranged in two driver rooms at the head and the tail of a train, the network video recorder is a core component of a vehicle-mounted network video system, and the network video recorder has the main functions of managing a camera, forwarding live streaming, pushing recorded and broadcast streaming and remotely managing video files. As shown in fig. 1, two network video recorders respectively acquire data of all cameras in a train through a ring network and store the data in a hard disk, and the touch screen client is used for performing parameter configuration on the network video recorder electrically connected with the touch screen client and outputting video pictures acquired by the network video recorder.
The system communicates with each device through the switches, and ring network redundancy is established between the switches to bypass single-point faults. All the devices are hung on the ring network and can access each other. All equipment is accessed to the switch through six or more network cables, so that the IP of the equipment is not repeated and is in a network segment; as shown in fig. 2, data transmitted in the network is divided into a video stream and a control stream, which are transmitted via ports without interfering with each other; the video stream adopts a standard stream media mode, and the control stream adopts private protocol packet transmission.
After the system is started, the network video recorder can automatically record the video information from each camera in real time, and stores the video files according to the preset frame rate and code stream. The file name contains information of the position, time, etc. of the camera, and a video file is formed with a period of 10 minutes (settable). The storage hard disk adopts a mode of circularly refreshing storage.
After the emergency alarm of the passenger is switched on, the passenger triggers the alarm linkage, and automatically stores and records the video of the accident carriage and the audio of the alarm conversation. The image record of the system uses H.265 coding format and 720P resolution, stores 25 frames of images per second, runs for 20 hours per day, and stores for 90 days continuously. In particular, see the following table:
monitoring video storage mode table
And a centralized monitoring mode is adopted, and the drivers' cabs at the head end and the tail end are respectively provided with a network video recorder, so that the network video recorders are redundant. 32TB hard disks are configured in a whole column.
In order to prevent recorded video data from being tampered, image labeling technology is applied to images before the images are stored in a hard disk. The number information, the time information and the carriage number information of the camera are recorded by being superposed on the image.
In case of emergency, for example, video images collected within a period of time after the passenger triggers the emergency alarm unit, the system records the images as special labels by using the label technology, and the user can quickly search and play back the images through the special labels.
The video playback and download are realized based on the mature open source projects such as FFmpeg and Qt and the self-research algorithm, an authorized user can quickly search and playback the video files through a cab touch screen client or a PC client installed with PTU software, an interface is shown in figure 3, the fast playback, the slow playback and the pause are supported, and the required pictures can be captured and stored. The monitoring image is downloaded through a USB3.0 interface or an Ethernet interface of the network video recorder, can be selectively played back in the cab and is displayed on a 12.1-inch liquid crystal display of the cab.
The control center watches the monitoring video on the train, can be set into an automatic cycle monitoring mode or a manual monitoring mode for picture switching, the operation control center can play back through a train-ground wireless network, and the system supports synchronous playback of multiple paths of videos.
The monitoring video on the train can be transmitted to a control center through a Wireless Local Area Network (WLAN) for being called by a central attendant. And each train uploads two paths of video images to the control center at the same time, and each path of video occupies 384-1000 kbps of bandwidth (PAL system, frame rate is 1-25 frames/second adjustable).
The system has the fault self-diagnosis capability, and fault information including video loss alarm, network interruption alarm and hard disk fault alarm can be displayed on a cab monitor screen in real time. The video loss alarm means: when the video signal output by the camera fails, the system generates a video loss alarm, automatically displays the corresponding camera button as red to indicate that the camera or the connection fails, needs to be overhauled, and can automatically recover to a normal working state after the failure processing is finished.
The network outage alarm indicates: when the network connection between the network video recorder and the camera is lost, the system generates a network interruption alarm, and simultaneously displays a corresponding camera button as yellow, so that the normal working state can be automatically recovered after the fault processing is finished.
The hard disk fault alarm indicates that: when any hard disk fails or the storage capacity exceeds the limit value, the system generates a hard disk failure alarm and simultaneously displays failure information on a monitoring screen.
2, 4 or 6 network video recorders can be arranged on a train, and the specific number can be determined according to the storage resolution and the storage time length. Any two network video recorders can be directly set as hot standby redundancy.
Daily articles such as backpacks, luggage, mobile phones, computers and the like are identified through machine learning and training of a large number of samples. The train management personnel can process the left-over objects conveniently and timely.
And (3) removing overlapped pictures and face recognition by processing the picture boundary acquired by each passenger room camera, and counting the number of people. And then weighing the carriage from a third-party system, and obtaining congestion degree data through weighting. The degree of congestion is displayed in the color temperature form in the real-time monitoring page car selection column, and the number of specific cars can also be displayed. The accuracy rate is more than 95%. And the spring damping device is arranged, so that the influence of vibration on the hard disk can be effectively prevented. The power-off protection device is arranged, so that the storage of the last video is not influenced when the system is abnormally powered off.
The vehicle-mounted network video recording system adopts a cab dual-computer hot standby technology, the network video recorders of the head cab and the tail cab simultaneously store videos, but the videos are divided into a primary video recorder and a secondary video recorder, the key starting end is the primary video recorder, and the touch screen client of the primary cab has a control authority.
As shown in fig. 4, the network video recorder includes an NVR module, an image module, a client module, a journal module, a streaming media module, and an equipment module; the device module is used for managing connection with all cameras in a train and performing data interaction with the cameras, the streaming media module is used for encoding and decoding video streams collected by the device module from the cameras, the image module is used for processing video stream images output by the streaming media module, processed video stream files are stored in the NVR module, the client module is in butt joint with the touch screen client and the PC client, live video streams are called from the image module according to instructions of the client module, video recording files are called from the NVR module, and the log module is used for recording logs.
The image module processing comprises adding watermarks, and the video acquired by the camera is firstly processed by the image module before video recording or live broadcasting; the NVR module stores camera video files, provides a remote access function in a network mode, and can inquire, play back and download the video files; the client module pushes the video to the touch screen client or the PC client through the RTSP protocol or other standard video streaming protocols for playing and controlling, the instructions of the touch screen client or the PC client are transmitted to the camera in a transparent transmission mode, and the log recorded by the log module comprises a fault record, an operation record and an operation record.
The touch screen client comprises a recording and broadcasting module, an alarm module, a live broadcasting module and a configuration module. The PC client comprises a recording and playing module, a data module, a live broadcasting module and a configuration module, and can perform parameter configuration on the network video recorder.
Claims (10)
1. The utility model provides a be applied to on-vehicle network video recording system of track traffic environment which characterized in that: the method comprises the steps that a network video recorder and a touch screen client side electrically connected with the network video recorder are respectively arranged in two driver rooms at the head and the tail of a train, the two network video recorders respectively collect all camera data in the train through a ring network and store the data in a hard disk, and the touch screen client side is used for carrying out parameter configuration on the network video recorder electrically connected with the touch screen client side and outputting video pictures collected by the network video recorder.
2. The vehicle-mounted network video recording system applied to the rail transit environment as claimed in claim 1, wherein: the network video recorder comprises an NVR module, an image module, a client module, a log module, a streaming media module and an equipment module; the device module is used for managing connection with all cameras in a train and performing data interaction with the cameras, the streaming media module is used for encoding and decoding video streams collected by the device module from the cameras, the image module is used for processing video stream images output by the streaming media module, processed video stream files are stored in the NVR module, the client module is in butt joint with the touch screen client and the PC client, live video streams are called from the image module according to instructions of the client module, video recording files are called from the NVR module, and the log module is used for recording logs.
3. The vehicle-mounted network video recording system applied to the rail transit environment as claimed in claim 2, wherein: image module processing includes adding a watermark; the NVR module inquires, plays back and downloads the video recording file; the client module pushes the video to the touch screen client or the PC client through the RTSP protocol or other standard video streaming protocols for playing and controlling, the instructions of the touch screen client or the PC client are transmitted to the camera in a transparent transmission mode, and the log recorded by the log module comprises a fault record, an operation record and an operation record.
4. The vehicle-mounted network video recording system applied to the rail transit environment as claimed in claim 2, wherein: the touch screen client comprises a recording and broadcasting module, an alarm module, a live broadcasting module and a configuration module.
5. The vehicle-mounted network video recording system applied to the rail transit environment as claimed in claim 2, wherein: the PC client comprises a recording and playing module, a data module, a live broadcasting module and a configuration module, and can perform parameter configuration on the network video recorder.
6. The vehicle-mounted network video recording system applied to the rail transit environment as claimed in claim 1, wherein: the network video recorders of the head cab and the tail cab simultaneously store videos, but the videos are divided into a primary video recorder and a secondary video recorder, the key starting end is the primary video recorder, and the touch screen client of the primary cab has a control authority.
7. The vehicle-mounted network video recording system applied to the rail transit environment as claimed in claim 1, wherein: the system communicates with each device through the switch, and all the devices are accessed to the switch through six types or more of network cables; data transmitted in the network are divided into a video stream and a control stream, and the video stream and the control stream are transmitted by ports without mutual interference; the video stream adopts a standard stream media mode, and the control stream adopts private protocol packet transmission.
8. The vehicle-mounted network video recording system applied to the rail transit environment as claimed in claim 1, wherein: the image record of the system adopts an H.265 coding format and 720P resolution, 25 frames of images are stored every second, a video file is formed in a set period, the video file is operated for 20 hours every day and continuously stored for 90 days, a 32TB hard disk is configured in a whole row, and the hard disk adopts a circulating refreshing storage mode.
9. The vehicle-mounted network video recording system applied to the rail transit environment as claimed in claim 1, wherein: before the image is stored in the hard disk, an image label technology is applied, and the number information, the time information and the carriage number information of the camera are superposed on the image for recording; special labels are added to the video of the emergency alarm.
10. The vehicle-mounted network video recording system applied to the rail transit environment as claimed in claim 1, wherein: the system has the fault self-diagnosis capability, and fault information including video loss alarm, network interruption alarm and hard disk fault alarm can be displayed on a cab monitor screen in real time.
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| CN206100297U (en) * | 2016-08-16 | 2017-04-12 | 山西省交通科学研究院 | On -vehicle monitored control system of train |
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- 2021-09-08 CN CN202111052489.3A patent/CN113747096A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101877783A (en) * | 2009-11-06 | 2010-11-03 | 北京邦诺存储科技有限公司 | Network video recorder cluster video monitoring system and method |
| CN102123274A (en) * | 2011-03-11 | 2011-07-13 | 广州国联通信有限公司 | Vehicle-mounted monitoring system with scatter storage function |
| CN201967049U (en) * | 2011-03-11 | 2011-09-07 | 广州国联通信有限公司 | Vehicle-borne video monitoring system with scattered storage function |
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